Publications by authors named "Nurhan Sahin"

123 Publications

Effects of maca () on nutrient digestibility and major nutrient transporters in rats fed a high-fat diet.

Food Sci Nutr 2021 Oct 31;9(10):5765-5773. Epub 2021 Aug 31.

Department of Animal Nutrition and Nutritional Disorders Faculty of Veterinary Medicine Firat University Elazig Turkey.

Scope: This study was carried out to investigate the efficacy of a new combination of root extracts of the (maca) plant, known for its nutritional and energizing features as well as its antioxidant properties, on nutrient digestibility and nutrient transporters expression.

Methods And Results: A total of 28 Sprague-Dawley rats (8-week-old) were divided into four groups: (i) control, (ii) ., (iii) high-fat diet (HFD), and (iv) HFD+. Maca was given to the rats as a powdered combination of the plant roots with a daily dose of 40 mg per kg BW. Maca administration significantly increased the digestibility of dry matter (DM), organic matter (OM), crude protein (CP), and ether extract (EE), and some nutrient transporter (Pept1/2, Fatp1, Glut1/2, and Sglt1)-expressions compared with non-treated control and HFD groups in the jejunum and ileum tissues ( < .0001).

Conclusions: Maca supplementation improved the digestibility of nutrients and expressions of nutrient transporters in the small intestine of the rats. These results indicate the positive communication between maca consumption and nutrient absorption in the small intestines of the animals.
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http://dx.doi.org/10.1002/fsn3.2545DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8498064PMC
October 2021

Feeding Zinc-Biofortified Wheat Improves Performance, Nutrient Digestibility, and Concentrations of Blood and Tissue Minerals in Quails.

Biol Trace Elem Res 2021 Oct 12. Epub 2021 Oct 12.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, 23119, Turkey.

The present study aimed to investigate the effects of feeding zinc (Zn)-biofortified wheat on performance, digestibility, and concentrations of minerals in quails. Zinc biofortification of wheat has been realized in the field by ergonomically applying Zn to foliar two and three times, which increased grain Zn from 18 mg/kg (control) to 34 and 64 mg/kg. A total of 180 quails were divided into six groups, each containing 30 birds, and fed diets containing wheat grain with either 18, 34, or 64 mg/kg with or without zinc picolinate (ZnPic) supplementation. Bodyweight, feed intake, feed efficiency, and cold carcass weights were greater (P = 0.0001) when the quails were fed a diet containing the biofortified wheat-containing 64 mg Zn/kg. Nitrogen, ash, Ca, P, Zn, Cu, and Fe retentions were greater with the Zn-biofortified wheat-containing 64 mg Zn/kg (P ≤ 0.026). The nutrient excretions were low with feeding a diet containing biofortified wheat-containing 64 mg Zn/kg (P ≤ 0.023). Serum, liver, and heart Zn concentrations increased with feeding biofortified wheat-containing 64 mg Zn/kg (P ≤ 0.002). Thigh meat Fe concentrations increased with increasing Zn concentrations of the wheat samples used (P = 0.0001), whereas the liver Cu concentrations decreased with feeding the wheat-containing 64 mg Zn/kg (P = 0.004). The Zn-biofortified wheat-containing greater Zn concentrations, particularly 64 mg Zn/kg, is a good replacement for corn in the poultry diet as long as its availability and low cost for better performance, greater digestibility, and elevated tissue Zn and Fe concentrations.
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http://dx.doi.org/10.1007/s12011-021-02955-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8505784PMC
October 2021

Expression of transient receptor potential melastatin 4 in differential diagnosis of eosinophilic renal tumors.

Mol Clin Oncol 2021 Nov 10;15(5):230. Epub 2021 Sep 10.

Department of Pathology, Faculty of Medicine, Bezmialem Vakif University, Istanbul 34093, Turkey.

Immunohistochemical and molecular studies to differentiate eosinophilic kidney tumors are gradually increasing. The present study investigated the role of transient receptor potential cation channel subfamily M member 4 (TRPM4), a non-selective cation channel associated with migration, proliferation and invasion in cancer cells, in this differentiation. The aim was to investigate the effectiveness of TRPM4 in differentiation of eosinophilic kidney tumors. The study included a total of 112 patients, including 97 eosinophilic kidney tumors with the diagnoses of 33 eosinophilic clear cell renal cell carcinoma (CCRCC), 35 eosinophilic chromophobe renal cell carcinoma (ChRCC), 8 papillary renal cell carcinoma type 2 (P2RCC), 21 renal oncocytoma (RO), as well as 15 papillary renal cell carcinoma type 1 to differentiate from P2RCC. For TRPM4, diffuse staining (>10%) was observed in 2 CCRCC, 15 ChRCC, 20 RO and 4 P2RCC cases. There was a significant difference between eosinophilic CCRCC and other eosinophilic tumors (P<0.05). While basolateral staining was observed in papillary tumors, membrane staining was observed in other stained cases. It was hypothesized that the use of TRPM4 along with morphological findings, cytokeratin 7 and other markers may be useful for the differentiation of eosinophilic kidney tumors.
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http://dx.doi.org/10.3892/mco.2021.2393DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8461610PMC
November 2021

Influence of dietary genistein and polyunsaturated fatty acids on lipid peroxidation and fatty acid composition of meat in quail exposed to heat stress.

Trop Anim Health Prod 2021 Oct 2;53(5):494. Epub 2021 Oct 2.

Department of Animal Nutrition Faculty of Veterinary Medicine, Erciyes University, 38039, Kayseri, Turkey.

This experiment was conducted to investigate the effects of polyunsaturated fatty acids (PUFA) and genistein on performance and meat fatty acid profiles in quail exposed to heat stress. A total of 360 Japanese quail were divided into 12 groups in a 2 × 2 × 3 factorial design; each group comprised 30 quail with five replicates and were kept either at 22 ± 2 °C for 24 h/day (Thermoneutral, TN) or 34 ± 2 °C for 8 h/day (08:00 to 17:00 h) followed by 22 °C for 16 h (heat stress, HS) conditions. The diet contained either two levels of PUFA at 15 or 45% of total fat or three levels of genistein at 0, 400, or 800 mg/kg. Bodyweight gain, feed intake, and feed efficiency were lower (p ≥ 0.01) for quail reared under heat stress and fed low PUFA. Increasing dietary genistein in a linear manner improved the productive performance (p < 0.001). Heat stress caused increases in serum and thigh meat malondialdehyde (MDA) concentrations and decreases in genistein and vitamin E and A concentrations in serum and thigh meat (p < 0.001). High PUFA (PUFA45) in the diet of quail caused greater 18:2, 18:3 ALA, EPA, DHA, n-6, and n-3 PUFA as well as total PUFA and total USFA percentages (p < 0.001) in the thigh muscle, some of which decreased with heat stress (p ≥ 0.006) with no regard to genistein supplementation. This study revealed that genistein with greater doses along with greater PUFA inclusion to the diet of quail reared under heat stress is recommended for alleviating adverse effects of heat stress and for yielding healthier meat for human consumption.
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http://dx.doi.org/10.1007/s11250-021-02933-7DOI Listing
October 2021

Allyl isothiocyanate attenuates LED light-induced retinal damage in rats: exploration for the potential molecular mechanisms.

Cutan Ocul Toxicol 2021 Dec 27;40(4):376-386. Epub 2021 Sep 27.

Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, Elazig, Turkey.

Purpose: Environmental light pollution due to artificial light may increase the rate and severity of retinal diseases, and plant-based nutritional interventions with antioxidant properties have the potential to reverse this phenomenon. We aimed to investigate the potential effects of allyl isothiocyanate (AITC) against white light-emitting diode (LED)-induced retinal degeneration (RD) in the rats.

Methods: Twenty-eight male rats were allocated as: (i) Control, (ii) LED, (iii) LED + AITC (10 mg/kg BW), (iv) LED + AITC (20 mg/kg BW). Rats were administered with AITC for 28 days, followed by two days of intense environmental LED light (750 ) exposure to the eyes. Animals were sacrificed immediately at the end of the study, then the blood and eyeballs were taken for the biochemical, western blotting, and histopathology examinations.

Results: AITC lowered the serum and retina malondialdehyde (MDA) levels while significantly ( 0.05) improving the retinal antioxidant enzyme activities in a dose-dependent manner. AITC improved retinal and outer nuclear layer (ONL) thickness as compared to the LED group ( 0.05). AITC increased the levels of Bax, caspase-3, HO-1, GAP43, and VEGF, while decreasing IL-1β, IL-6, NF-κB, Bcl-2, GFAP, Grp78, activating ATF4 and ATF6 as compared to the LED group ( 0.05).

Conclusion: In conclusion, four weeks of AITC administration to the rats showed specific protective effects against two days of intense LED light-induced retinal damage; through antiinflammatory, antioxidant, anti-apoptotic, and modulating mitochondrial metabolic pathways.
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http://dx.doi.org/10.1080/15569527.2021.1978478DOI Listing
December 2021

Niacinamide and undenatured type II collagen modulates the inflammatory response in rats with monoiodoacetate-induced osteoarthritis.

Sci Rep 2021 07 19;11(1):14724. Epub 2021 Jul 19.

Lonza Inc., Consumer Health and Nutrition, Morristown, NJ, USA.

The current work aimed to examine the properties of oral supplementation of niacinamide and undenatured type II collagen (UCII) on the inflammation and joint pain behavior of rats with osteoarthritis (OA). Forty-nine Wistar rats were allocated into seven groups; control (no MIA), MIA as a non-supplemental group with monosodium iodoacetate (MIA)-induced knee osteoarthritis, MIA + undenatured type II collagen (UCII) at 4 mg/kg BW, MIA + Niacinamide at 40 mg/kg BW (NA40), MIA + Niacinamide at 200 mg/kg BW (NA200), MIA + UCII + NA40 and MIA + UCII + NA200. Serum IL-1β, IL-6, TNF-α, COMP, and CRP increased in rats with OA and decreased in UCII and NA groups (p < 0.05). Rats with osteoarthritis had greater serum MDA and knee joint MMP-3, NF-κB, and TGβ protein levels and decreased in treated groups with UCII and NA (p < 0.05). The rats with OA also bore elevated joint diameters with joint pain behavior measured as decreased the stride lengths, the paw areas, and the paw widths, and increased the Kellgren-Lawrence and the Mankin scores (p < 0.05) and decreased in UCII treated groups. These results suggest the combinations with the UCII + NA supplementation as being most effective and reduce the inflammation responses for most OA symptoms in rats.
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http://dx.doi.org/10.1038/s41598-021-94142-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8289820PMC
July 2021

The Protective Effects of a Combination of an Arginine Silicate Complex and Magnesium Biotinate Against UV-Induced Skin Damage in Rats.

Front Pharmacol 2021 15;12:657207. Epub 2021 Jun 15.

Department of Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

The purpose of this study was to observe the effects of a novel combination of inositol-stabilized arginine silicate complex (ASI) and magnesium biotinate (MgB) on the prevention of skin damage after UVB exposure in rats. Forty-nine Sprague-Dawley rats were randomized into one of the following groups: (1) NC, normal control, (2) SC, shaved control, (3) UVB (exposed to UVB radiation), (4) ASI+MgB-L (Low Dose), (5) ASI+MgB-H (High Dose), (6) ASI+MgB-L+MgB cream, (7) ASI+MgB-H+MgB cream. The results showed that ASI+MgB treatment alleviated the macroscopic and histopathological damages in the skin of rats caused by UVB exposure. Skin elasticity evaluation showed a similar trend. ASI+MgB increased serum Mg, Fe, Zn, Cu, Si, biotin, and arginine concentrations and skin hydroxyproline and biotinidase levels while decreasing skin elastase activity ( < 0.05) and malondialdehyde (MDA) concentration ( < 0.001). Moreover, ASI+MgB treatment increased skin levels of biotin-dependent carboxylases (ACC1, ACC2, PC, PCC, MCC) and decreased mammalian target of rapamycin (mTOR) pathways and matrix metalloproteinase protein levels by the regulation of the activator protein 1 (AP-1), and mitogen activated protein kinases (MAPKs) signaling pathways. In addition, ASI+MgB caused lower levels of inflammatory factors, including TNF-α, NFκB, IL-6, IL-8, and COX-2 in the skin samples ( < 0.05). The levels of Bax and caspase-3 were increased, while anti-apoptotic protein Bcl-2 was decreased by UVB exposure, which was reversed by ASI+MgB treatment. These results show that treatment with ASI and MgB protects against skin damage by improving skin appearance, elasticity, inflammation, apoptosis, and overall health.
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http://dx.doi.org/10.3389/fphar.2021.657207DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8250765PMC
June 2021

Effects of magnesium biotinate supplementation on serum insulin, glucose and lipid parameters along with liver protein levels of lipid metabolism in rats.

Magnes Res 2021 Feb;34(1):9-19

Research and Development, Nutrition 21, LLC, New York, USA.

The objective of this study was to investigate the effects of a novel form of biotin (magnesium biotinate) on serum glucose, lipid profile, and hepatic lipid metabolism-related protein levels in rats. Forty-two rats were divided into six groups and fed a standard diet-based egg white powdered diet supplemented with either d-biotin at 0.01, 1, or 100 mg/kg BW or magnesium biotinate at 0.01, 1, or 100 mg/kg BW for 35 days. Neither form of biotin influenced (p > 0.05) serum glucose or insulin concentrations. Serum total cholesterol and triglyceride decreased with biotin from both sources (p < 0.05). Concentrations were lower with magnesium biotinate when comparing the 1 mg/kg dose (p < 0.05). Serum, liver, and brain biotin and liver cyclic guanosine monophosphate (cGMP) concentrations were greater when rats were treated with magnesium biotinate versus d-biotin, particularly when comparing the 1 and 100 mg/kg dose groups (p < 0.05). Both biotin forms decreased the liver SREBP-1c and FAS and increased AMPK-α1, ACC-1, ACC-2, PCC, and MCC levels (p < 0.05). The magnitudes of responses were more emphasized with magnesium biotinate. Magnesium biotinate, compared with a commercial d-biotin, is more effective in reducing serum lipid concentrations and regulating protein levels of lipid metabolism-related biomarkers.
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http://dx.doi.org/10.1684/mrh.2021.0480DOI Listing
February 2021

Marine phytoplankton improves recovery and sustains immune function in humans and lowers proinflammatory immunoregulatory cytokines in a rat model.

Phys Act Nutr 2021 Mar 31;25(1):42-55. Epub 2021 Mar 31.

Department of Animal Nutrition, Firat University, Elazig, Turkey.

Purpose: This study investigated the effects of marine phytoplankton supplementation (Oceanix®, Tetraselmis chuii) on 1) maximal isometric strength and immune function in healthy humans following a oneweek high-intensity resistance-training program and 2) the proinflammatory cytokine response to exercise in a rat model.

Methods: In the human trial, 22 healthy male and female participants were randomly divided into marine phytoplankton and placebo groups. Following baseline testing, participants underwent a 14-day supplement loading phase before completing five consecutive days of intense resistance training. In the rat model, rats were randomly divided into four groups (n=7 per condition): (i) control, (ii) exercise, (iii) exercise + marine phytoplankton (2.55 mg/kg/day), or (iv) exercise + marine phytoplankton (5.1 mg/kg/day). Rats in the exercising groups performed treadmill exercise 5 days per week for 6 weeks.

Results: In the human model, marine phytoplankton prevented significant declines in the isometric peak rate of force development compared to placebo. Additionally, salivary immunoglobulin A concentration was significantly lower following the resistance training protocol in the placebo group but not in the marine phytoplankton group. Marine phytoplankton in exercising rats decreased intramuscular levels and serum concentrations of tumor necrosis factor-alpha (TNF-α) and interleukin-1 beta (IL-1β) and intramuscular concentrations of malondialdehyde.

Conclusion: Marine phytoplankton prevented decrements in indices of functional exercise recovery and immune function. Mechanistically, these outcomes could be prompted by modulating the oxidative stress and proinflammatory cytokine response to exercise.
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http://dx.doi.org/10.20463/pan.2021.0007DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8076584PMC
March 2021

Lutein/zeaxanthin isomers regulate neurotrophic factors and synaptic plasticity in trained rats

Turk J Med Sci 2021 08 30;51(4):2167-2176. Epub 2021 Aug 30.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Fırat University, Elazığ, Turkey

Background/aim: This study was conducted to elucidate the effects of lutein/zeaxanthin isomers (L/Zi) on lipid metabolism, oxidative stress, NF-κB/Nrf2 pathways, and synaptic plasticity proteins in trained rats.

Materials And Methods: Wistar rats were distributed into four groups: 1) control, 2) L/Zi: rats received L/Zi at the dose of 100 mg/kg by oral gavage, 3) exercise, 4) exercise+L/Zi: rats exercised and received L/Zi (100 mg/kg) by oral gavage. The duration of the study was eight weeks.

Results: Exercise combined with L/Zi reduced lipid peroxidation and improved antioxidant enzyme activities of muscle and cerebral cortex in rats (p < 0.001). In the Exercise + L/Zi group, muscle and cerebral cortex Nrf2 and HO-1 levels increased, while NF-κB levels decreased (p <0.001). Also, L/Zi improved BDNF, synapsin I, SYP, and GAP-43 levels of the cerebral cortex of trained rats (p < 0.001). The highest levels of BDNF, synapsin SYP, and GAP-43 in the cerebral cortex were determined in the Exercise+L/Zi group.

Conclusion: These results suggested that exercise combined with L/Zi supplementation might be effective to reduce neurodegeneration via improving neurotrophic factors and synaptic proteins, and oxidative capacity in the cerebral cortex.
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http://dx.doi.org/10.3906/sag-2101-264DOI Listing
August 2021

Effects of Exercise Combined with Undenatured Type II Collagen on Endurance Capacity, Antioxidant Status, Muscle Lipogenic Genes and E3 Ubiquitin Ligases in Rats.

Animals (Basel) 2021 Mar 17;11(3). Epub 2021 Mar 17.

Animal Nutrition Department, Veterinary Faculty, University of Firat, 23119 Elazig, Turkey.

The current study aimed to investigate the effect of exercise combined with undenatured type II collagen (UCII) administration on endurance capacity, lipid metabolism, inflammation, and antioxidant status in rats. Twenty-one male Wistar albino rats were divided into three groups as follows: (1) Sedentary control, (2) Exercise (E), (3) Exercise + UCII (4 mg/kg BW/day; E + UCII). The findings showed that the exhaustive running time in the UCII group was significantly prolonged compared to that of the non-supplemented group ( < 0.001). When compared to the control group, total serum cholesterol (TC, < 0.05) and triglyceride (TG, < 0.05) levels decreased, while creatinine kinase (CK) levels increased in the E group ( < 0.001). Serum creatinine kinase levels were reduced in the E + UCII group compared to the E group ( < 0.01). Serum lactate, myoglobin ( < 0.01), and osteocalcin levels ( < 0.01) increased significantly in exercised rats compared to sedentary control rats, while serum lactate ( < 0.01) and myoglobin ( < 0.0001) levels decreased in the E + UCII group compared to control. Additionally, UCII supplementation caused significant increases in antioxidant enzyme activities [SOD ( < 0.01) and GSH-Px ( < 0.05)] and decreases in malondialdehyde (MDA) and tumor necrosis factor (TNF-α) levels ( < 0.001). Muscle lipogenic protein (SREBP-1c, ACLY, LXR, and FAS) levels were lower in the E + UCII group than in other groups. In addition, UCII supplementation decreased muscle MAFbx, MuRF-1, myostatin and increased MyoD levels in exercised rats. Moreover, the E + UCII group had lower muscle inflammatory markers [TNF-α ( < 0.0001) and IL-1β ( < 0.01)] than the control group. These results suggest exercise combined with UCII (4 mg/kg BW/day) modulates lipid, muscle, and antioxidant status in rats.
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http://dx.doi.org/10.3390/ani11030851DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8002679PMC
March 2021

A Next Generation Formulation of Curcumin Ameliorates Experimentally Induced Osteoarthritis in Rats Regulation of Inflammatory Mediators.

Front Immunol 2021 12;12:609629. Epub 2021 Mar 12.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

Osteoarthritis (OA) is a chronic and debilitating disease of the knee joint. OA of the knee is initiated by physical damage and accumulated oxidative stress, followed by an exaggerated inflammation leading to cartilage damage. Currently, no effective and safe therapeutic option capable of restoring articular cartilage tissue and joint architecture is available. We here report a novel and highly bioavailable formulation of curcumin, labeled as Next Generation Ultrasol Curcumin (NGUC), which was 64.7 times more bioavailable than natural 95% curcumin extract as demonstrated in rat bioavailability studies. We further investigated the protective effect of NGUC against monosodium iodoacetate (MIA)-induced knee OA in rats. Analysis of X-ray and histopathological images revealed that NGUC supplementation restored joint architecture and reduced swelling of joints induced by MIA. NGUC treatment caused a significant reduction in the levels of inflammatory mediators such as TNF-α, IL-1β, IL-6, COMP, and CRP, and expressions of MMP-3, 5-LOX, COX-2, and NFκB in synovial tissue of rats with MIA-induced OA. NGUC also decreased serum MDA level and increased the levels of antioxidant enzymes SOD, CAT, and GPX. Thus, our results indicate that a novel formulation of curcumin with enhanced bioavailability effectively ameliorates the pathophysiology of OA.
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http://dx.doi.org/10.3389/fimmu.2021.609629DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7994281PMC
June 2021

Undenatured Type II Collagen Ameliorates Inflammatory Responses and Articular Cartilage Damage in the Rat Model of Osteoarthritis.

Front Vet Sci 2021 4;8:617789. Epub 2021 Mar 4.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

Osteoarthritis (OA) is an age-related joint disease that includes gradual disruption of the articular cartilage and the resulting pain. The present study was designed to test the effects of undenatured type II collagen (UC-II®) on joint inflammation in the monoiodoacetate (MIA) OA model. We also investigated possible mechanisms underlying these effects. Female Wistar rats were divided into three groups: (i) Control; (ii) MIA-induced rats treated with vehicle; (iii) MIA-induced rats treated with UC-II (4 mg/kg BW). OA was induced in rats by intra-articular injection of MIA (1 mg) after seven days of UC-II treatment. UC-II reduced MIA-induced Kellgren-Lawrence scoring (53.3%, < 0.05). The serum levels of inflammatory cytokines [IL-1β (7.8%), IL-6 (18.0%), TNF-α (25.9%), COMP (16.4%), CRP (32.4%)] were reduced in UC-II supplemented group ( < 0.0001). In the articular cartilage, UC-II inhibited the production of PGE2 (19.6%) and the expression of IL-1β, IL-6, TNF-a, COX-2, MCP-1, NF-κB, MMP-3, RANKL ( < 0.001). The COL-1 and OPG levels were increased, and MDA decreased in UC-II supplemented rats ( < 0.001). UC-II could be useful to alleviate joint inflammation and pain in OA joints by reducing the expression of inflammatory mediators.
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http://dx.doi.org/10.3389/fvets.2021.617789DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7970046PMC
March 2021

Different Doses of -Cryptoxanthin May Secure the Retina from Photooxidative Injury Resulted from Common LED Sources.

Oxid Med Cell Longev 2021 10;2021:6672525. Epub 2021 Feb 10.

Department of Animal Nutrition, Faculty of Veterinary Science, Firat University, Elazig 23119, Turkey.

Retinal damage associated with loss of photoreceptors is a hallmark of eye diseases such as age-related macular degeneration (AMD) and diabetic retinopathy. Potent nutritional antioxidants were previously shown to abate the degenerative process in AMD. -Cryptoxanthin (BCX) is an essential dietary carotenoid with antioxidant, anti-inflammatory, and provitamin A activity. It is a potential candidate for developing intervention strategies to delay the development/progression of AMD. In the current study, the effect of a novel, highly purified BCX oral formulation on the rat retinal damage model was evaluated. Rats were fed with BCX for four weeks at the doses of 2 and 4 mg/kg body weight in the form of highly bioavailable oil suspension, followed by retinal damage by exposing to the bright light-emitting diode (LED) light (750 lux) for 48 hrs. Animals were sacrificed after 48 hours, and eyes and blood samples were collected and analyzed. BCX supplementations (2 and 4 mg/kg) showed improvements in the visual condition as demonstrated by histopathology of the retina and measured parameters such as total retinal thickness and outer nuclear layer thickness. BCX supplementation helped reduce the burden of oxidative stress as seen by decreased serum and retinal tissue levels of malondialdehyde (MDA) and restored the antioxidant enzyme activities in BCX groups. Further, BCX supplementation modulated inflammatory markers (IL-1, IL-6, and NF-B), apoptotic proteins (Bax, Bcl-2, caspase 3), growth proteins and factors (GAP43, VEGF), glial and neuronal proteins (GFAP, NCAM), and heme oxygenase-1 (HO-1), along with the mitochondrial stress markers (ATF4, ATF6, Grp78, Grp94) in the rat retinal tissue. This study indicates that oral supplementation of BCX exerts a protective effect on light-induced retinal damage in the rats via reducing oxidative stress and inflammation, also protected against mitochondrial DNA damage and cellular death.
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http://dx.doi.org/10.1155/2021/6672525DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7895591PMC
September 2021

Effects of a Novel Magnesium Complex on Metabolic and Cognitive Functions and the Expression of Synapse-Associated Proteins in Rats Fed a High-Fat Diet.

Biol Trace Elem Res 2021 Feb 16. Epub 2021 Feb 16.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, 23119, Elazig, Turkey.

This study was conducted to compare the effects of a novel form of magnesium, Mg picolinate (MgPic), to magnesium oxide (MgO) on metabolic and cognitive functions and the expression of genes associated with these functions in rats fed a high-fat diet (HFD). Forty-two Wistar rats were divided into six groups: control, MgO, MgPic, HFD, HFD + MgO, and HFD + MgPic. Mg was supplemented at 500 mg of elemental Mg/kg diet for 8 weeks. MgPic and MgO supplementation decreased visceral fat, serum glucose, insulin, leptin, TC, TG, FFA, testosterone, FSH, LH, SHBG, IGF-1, and MDA levels, but increased brain SOD, CAT, and GSH-Px activities in HFD rats. Inflammation and cognitive-related markers (presynaptic synapsin PSD95, postsynaptic PSD93, postsynaptic GluR1, and GluR2) were improved in HFD rats administered Mg, with more significant effects seen in the MgPic group. MgPic also decreased brain NF-κB but elevated brain Nrf2 levels, compared with the HFD group. The phosphorylation levels of Akt (Thr308), Akt (Ser473), PI3K try 458/199, and Ser9-GSK-3 in the brain were improved after Mg treatment in HFD rats, with more potent effects seen from MgPic supplementation. MgPic has a higher bioavailability and is more effective in improving metabolic parameters and enhancing memory than MgO. The pro-cognitive effects of MgO and MgPic could be mediated via modulation of the AMPA-type glutamate receptor and activation of the PI3K-Akt-GSK-3β signaling pathway. These findings further support the use of MgPic in the management of metabolic and cognitive disorders.
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http://dx.doi.org/10.1007/s12011-021-02619-zDOI Listing
February 2021

Effects of supplementing different chromium histidinate complexes on glucose and lipid metabolism and related protein expressions in rats fed a high-fat diet.

J Trace Elem Med Biol 2021 May 23;65:126723. Epub 2021 Jan 23.

Research and Development, Nutrition 21, LLC, NY, United States.

Background: The objective of this study was to investigate the effects of different chromium histidinate (CrHis) complexes added to the diet of rats fed a high-fat diet (HFD) on body weight changes, glucose and lipid metabolism parameters, and changes in biomarkers such as PPAR-γ, IRS-1, GLUTs, and NF-κB proteins.

Methods: Forty-two Sprague-Dawley rats were divided equally into six groups and fed either a control, an HFD, or an HFD supplemented with either CrHis1, CrHis2, CrHis3, or a combination of the CrHis complexes as CrHisM.

Results: Feeding an HFD to rats increased body weights, HOMA-IR values, fasting serum glucose, insulin, leptin, free fatty acid, total cholesterol, low-density lipoprotein cholesterol, and MDA concentrations as well as AST activities, and decreased serum and brain serotonin concentrations compared with rats fed a control diet (P <  0.0001). The levels of the PPAR-γ, IRS-1, and GLUTs in the liver and brain decreased, while NF-κB level increased, with feeding an HFD (P <  0.05). Although all the CrHis supplements reversed the negative effects of feeding an HFD (P <  0.05), the CrHis1 complex was most effective in changing the protein levels, while CrHisM was most effective in influencing certain parameters such as body weight and serum metabolites.

Conclusion: The results of the present work suggest that the CrHis1 complex is most potent for alleviating the negative effects of feeding an HFD. The efficacy of CrHisM is likely due to the presence of the CrHis1 complex.
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http://dx.doi.org/10.1016/j.jtemb.2021.126723DOI Listing
May 2021

Ovarian Granulosa Cell Tumor: A Clinicoradiologic Series with Literature Review.

Curr Med Imaging 2021 ;17(6):790-797

Department of Pathology, Medical Faculty, Bezmialem Vakif University, Istanbul, Turkey.

Background: Ovarian granulosa cell tumors that originate from the sex cord-stromal cells represent 2% to 5% of all ovarian cancers. These tumors constitute two subgroups according to their clinical and histopathological features: juvenile granulosa cell tumors (JGCT) and adult granulosa cell tumors (AGCT). Granulosa cell tumor (GCT) is considered to be a low-grade malignancy with a favorable prognosis.

Methods: This case series includes four patients who were admitted to our university hospital and had an MRI examination within 5 years.

Results: The histopathological subtype of granulosa tumor was the adult type in 3 patients and juvenile type in 1 patient. Even though it is extremely rare, bone metastases were present in one of our patients. Liver metastases were also detected in one patient. The MRI examination of tumors revealed a heterogeneous solid mass that contained cystic components in 3 patients. In one of our patients, the tumor had a multiseptated cystic feature, and all of the tumors were ovoid or round with smooth margins. T1 signal hyperintensity, not suppressed on fat saturation sequences, was observed in 3 patients, which represents its hemorrhagic content.

Conclusion: Even though granulosa cell tumor shows a wide spectrum in terms of tumor appearance, some common findings have been shown and especially a hemorrhagic content could be a clue for us. The tumor is known to have a good prognosis, but it may have an unpredictable clinical course, so close follow-up is greatly important.
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http://dx.doi.org/10.2174/1573405616666201228153755DOI Listing
January 2021

Marine Phytoplankton Improves Exercise Recovery in Humans and Activates Repair Mechanisms in Rats.

Int J Sports Med 2020 Dec 22. Epub 2020 Dec 22.

Research Department, Applied Science & Performance Institute, Tampa, United States.

This study investigated the effects of marine phytoplankton supplementation on 1) perceived recovery and ground reaction forces in humans following a non-functional overreaching resistance-training program and 2) myogenic molecular markers associated with muscle cell recovery in a rat model. In the human trial, a 5-week resistance-training program with intentional overreaching on weeks 2 and 5 was implemented. Results indicate that marine phytoplankton prompted positive changes in perceived recovery at post-testing and, while both marine phytoplankton and placebo conditions demonstrated decreased peak and mean rate of force development following the overreaching weeks, placebo remained decreased at post-testing while marine phytoplankton returned to baseline levels. In the rat model, rats were divided into four conditions: (i) control, (ii) exercise, (iii) exercise + marine phytoplankton 2.55 mg·d, or (iv) exercise+marine phytoplankton 5.1 mg·d. Rats in exercising conditions performed treadmill exercise 5 d·wk for 6 weeks. Marine phytoplankton in exercising rats increased positive and decrease negative myogenic factors regulating satellite cell proliferation. Taken together, marine phytoplankton improved perceptual and functional indices of exercise recovery in an overreaching human model and, mechanistically, this could be driven through cell cycle regulation and a potential to improve protein turnover.
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http://dx.doi.org/10.1055/a-1320-1061DOI Listing
December 2020

Salacia chinensis exerts its antidiabetic effect by modulating glucose-regulated proteins and transcription factors in high-fat diet fed-streptozotocin-induced type 2 diabetic rats.

J Food Biochem 2020 12 5;44(12):e13513. Epub 2020 Oct 5.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

This study aimed to investigate the properties of Salacia chinensis (Celastraceae, SC) and its molecular mechanism in the type 2 diabetic rats. Forty-two Wistar rats were divided into six groups (n = 7): control, SC (100 mg/kg, per os), high-fat diet (HFD), HFD + SC (100 mg/kg), HFD + streptozotocin (STZ, 40 mg/kg, i.p.), and HFD + STZ+SC. SC decreased serum glucose, insulin, triglycerides, free fatty acid, and malondialdehyde levels, but increased serum total antioxidant capacity (0.33 ± 0.02 versus. 0.79 ± 0.03), compared with the untreated group (p < .001). Additionally, SC elevated the expression of glucose-regulated proteins GLUT2, PPAR-ɣ, p-IRS, and Nrf2, but downregulated NF-κB in the liver and kidney (p < .001). In conclusion, SC could improve insulin resistance by modulation of glucose-regulated proteins and transcription factors in diabetic rats. PRACTICAL APPLICATIONS: Present data has contributed to the current ethnomedicinal benefits of SC, through which the SC intake regulated the carbohydrate metabolism and increased the antioxidant capacity. The balance of transcription factors can mediate these efficacies partially and various key proteins involved in energy metabolism, along with oxidative stress and insulin sensitivity.
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http://dx.doi.org/10.1111/jfbc.13513DOI Listing
December 2020

Recurrent angiolymphoid hyperplasia with eosinophilia during several pregnancies.

Dermatol Online J 2020 Aug 15;26(8). Epub 2020 Aug 15.

Malatya Training and Research Center, Malatya.

Angiolymphoid hyperplasia with eosinophilia (ALHE) is a rare, benign vascular tumor. Although its etiology is not clearly known, infection, hormonal factors, and trauma are the suspected reasons. There are few cases considered to be related to pregnancy described in the literature. Granulomas are rarely seen in the histopathology and only four patients with granulomas have been described. Herein, we will present a 28-year-old woman who has been pregnant three times; in every pregnancy, she developed pink nodular lesions on the back of her ear. In the first two pregnancies, the lesions had appeared during the pregnancy and regressed completely in the postpartum period. In her third pregnancy, the condition emerged again and lasted 1.5 years after birth of her child. Histopathology exhibited ALHE with granulomas. Although the relationship between ALHE and pregnancy is already known, there are few cutaneous ALHE cases associated with pregnancy reported in the literature. This association is further supported by this case having recurrent ALHE during each pregnancy period. Also, the presence of naked granuloma in histopathology, unlike most of the cases, contributes to the current histopathological data.
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August 2020

Effects of taurine supplementation on productive performance, nutrient digestibility and gene expression of nutrient transporters in quails reared under heat stress.

J Therm Biol 2020 Aug 1;92:102668. Epub 2020 Aug 1.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, 23119, Turkey.

This study was conducted to examine the effects of dietary taurine supplementation on productive performance, nutrient digestibility, antioxidant status, and the gene expression of ileal nutrient transporters in laying quails reared under heat stress (HS). One hundred and eighty laying Japanese quails (Coturnix coturnix japonica) were fed a basal diet or basal diet supplemented with either 2.5 or 5 g of taurine per kg of diet, and reared at either 22 ± 2 °C for 24 h/d (thermoneutral, TN) or 34 ± 2 °C for 8 h/d (HS) for 12 weeks. The quails reared under HS consumed less feed, produced less egg, and had lower dry matter, organic matter and crude protein apparent digestibilities compared with the quails reared under the TN condition (P = 0.001). However, increasing taurine concentrations in the diet improved feed intake and egg production (P = 0.001), but also the apparent digestibilities (P ≤ 0.027) in quails reared under HS. The greater doses (5 g/kg) of taurine resulted in more responses. The quails reared under HS had greater serum and liver MDA concentrations (P = 0.0001) which decreased with dietary taurine supplementations, particularly greater doses. The gene expressions of ileal PEPT1, EAAT3, CAT1, CAT2, SGLT1, SGLT5, GLUT2, and GLUT5 decreased under HS conditions (P = 0.001). However, supplementing taurine, in a dose-dependent fashion, to the diet of quails reared under HS resulted in increases in the gene expressions of the transporters (P < 0.05) except for CAT1. The results of the present work showed that taurine supplementation, particularly with greater doses (5 g/kg), to the diet of laying quails kept under HS acts as alleviating negative effects of HS, resulting in improvements in productive performance and nutrient digestion, and also upregulation of ileal nutrient transporters.
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http://dx.doi.org/10.1016/j.jtherbio.2020.102668DOI Listing
August 2020

Mango ginger (curcuma amada) inhibits collagen-induced arthritis by modulating inflammatory cytokine levels in rats

Turk J Med Sci 2020 12 17;50(8):2040-2047. Epub 2020 Dec 17.

Department of Animal Nutrition, Faculty of Veterinary Science, Fırat University, Elazığ, TURKEY

Background/aim: Mango ginger (MG: curcuma amada) has antioxidant and antiinflammatory activities. The aim was to evaluate the antiarthritic potential efficacy of MG on collagen-induced arthritis.

Materials And Methods: Twenty-one female Wistar-albino rats were divided into three groups. Arthritis was induced by intradermal injections of type II collagen and Freund’s adjuvant. MG extract was orally administered starting from the first collagen injection. TNF-α, IL-6, IL-17, obestatin, sclerostin, and DKK-1 serum levels were determined, and perisynovial inflammation and cartilage-bone destruction in the paws were histologically evaluated. Moreover, joint tissue TNF-α, IL-17, NF-κB, and COX-2 levels were analyzed.

Results: TNF-α, IL-17, IL-6, and DKK-1 serum levels were increased, and obestatin and sclerostin serum levels were decreased in the arthritis group compared to the control group. However, MG supplements decreased TNF-α, IL-17, IL-6, and DKK-1 serum levels and increased obestatin and sclerostin serum levels. Similarly, while collagen injection increased tissue TNF-α, IL-17, NF-κB, and COX-2 levels, MG decreased TNF-α, IL-17, and NF-κB levels. Moreover, MG ameliorated perisynovial inflammation and cartilage-bone destruction in the paws.

Conclusion: MG ameliorates arthritis via actions on inflammatory ways and wingless (Wnt) signaling pathway. These results suggest that MG may have a considerable potential efficacy for the treatment of rheumatoid arthritis.
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http://dx.doi.org/10.3906/sag-2004-105DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7775699PMC
December 2020

Phytoplankton Supplementation Lowers Muscle Damage and Sustains Performance across Repeated Exercise Bouts in Humans and Improves Antioxidant Capacity in a Mechanistic Animal.

Nutrients 2020 Jul 4;12(7). Epub 2020 Jul 4.

The Applied Science & Performance Institute, Research Division, Tampa, FL 33607, USA.

The purpose of this study was to investigate the impact of antioxidant-rich marine phytoplankton supplementation (Oceanix, OCX) on performance and muscle damage following a cross-training event in endurance-trained subjects. Additionally, an animal model was carried out to assess the effects of varying dosages of OCX, with exercise, on intramuscular antioxidant capacity.

Methods: In the human trial, endurance-trained subjects (average running distance = 29.5 ± 2.6 miles × week) were randomly divided into placebo (PLA) and OCX (25 mg) conditions for 14 days. The subjects were pre-tested on a one-mile uphill run, maximal isometric strength, countermovement jump (CMJ) and squat jump (SJ) power, and for muscle damage (creatine kinase (CK)). On Day 12, the subjects underwent a strenuous cross-training event. Measures were reassessed on Day 13 and 14 (24 h and 48 h Post event). In the animal model, Wistar rats were divided into four groups ( = 7): (i) Control (no exercise and placebo (CON)), (ii) Exercise (E), (iii) Exercise + OCX 1 (Oceanix, 2.55 mg/day, (iv) Exercise + OCX 2 (5.1 mg/day). The rats performed treadmill exercise five days a week for 6 weeks. Intramuscular antioxidant capacity (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px)) and muscle damage (CK and myoglobin (MYOB) were collected. The data were analyzed using repeated measures ANOVA and -test for select variables. The alpha value was set at < 0.05.

Results: For the human trial, SJ power lowered in PLA relative to OCX at 24 h Post (-15%, < 0.05). Decrements in isometric strength from Pre to 48 h Post were greater in the PLA group (-12%, < 0.05) than in the OCX. Serum CK levels were greater in the PLA compared to the OCX (+14%, < 0.05). For the animal trial, the intramuscular antioxidant capacity was increased in a general dose-dependent manner (E + Oc2 > E + Oc1 > E > CON). Additionally, CK and MYOB were lower in supplemented compared to E alone.

Conclusions: Phytoplankton supplementation (Oceanix) sustains performance and lowers muscle damage across repeated exercise bouts. The ingredient appears to operate through an elevating oxidative capacity in skeletal muscle.
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http://dx.doi.org/10.3390/nu12071990DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7400322PMC
July 2020

The role of prokineticins in recurrent implantation failure.

J Gynecol Obstet Hum Reprod 2020 Nov 22;49(9):101835. Epub 2020 Jun 22.

Department of Stem Cell, Cellular Therapy and Stem Cell Production, Application and Research Center (ESTEM), Eskisehir Osmangazi University, Eskisehir, Turkey.

The aim of the present study was to investigate the expression patterns of prokineticins (PROK) and prokineticin receptors (PROKR) in the endometrium of women with recurrent implantation failure (RIF). Fifteen (15) women with RIF and 15 fertile controls were enrolled in this study. Endometrial samples were taken from study participants with an endometrial biopsy cannula during the implantation window. Real time polymerase chain reaction and immunohistochemistry were used to determine PROK/PROKR mRNA expression and protein localization, respectively. PROK1 mRNA levels were 6.09 times higher compared to endometrial samples obtained from women with RIF than in samples obtained from fertile controls, whereas PROKR1 mRNA levels were 2.46 times lower in endometrial samples obtained from women with RIF than in samples from fertile controls. In addition, decreased PROKR1 was supported by immunohistochemistry analysis at protein level. There was no statistically significant difference between women with RIF and fertile controls regarding PROK2 and PROKR2 levels. Altered expression of the PROK1/PROKR1 system could be one of the numerous abnormalities in the endometrium of women with RIF.
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http://dx.doi.org/10.1016/j.jogoh.2020.101835DOI Listing
November 2020

The addition of an amylopectin/chromium complex to branched-chain amino acids enhances muscle protein synthesis in rat skeletal muscle.

J Int Soc Sports Nutr 2020 May 27;17(1):26. Epub 2020 May 27.

Department of Animal Nutrition and Nutritional Disorders, Faculty of Veterinary Medicine, Firat University, 23119, Elazig, Turkey.

Background: A previous clinical study reported that the addition of an amylopectin/chromium complex (ACr; Velositol®) to 6 g of whey protein (WP) significantly enhanced muscle protein synthesis (MPS). Branched-chain amino acids (BCAAs) are also well-known to enhance MPS. The aim of this study was to determine if the addition of ACr to BCAAs can enhance MPS and activate expression of the mammalian target of the rapamycin (mTOR) pathway compared to BCAAs and exercise alone in exercise-trained rats.

Methods: Twenty-four male Wistar rats were randomly divided into three groups (n = 8 per group): (I) Exercise control, (II) Exercise plus BCAAs (0.465 g/kg BW, a 6 g human equivalent dose (HED)), and (III) Exercise plus BCAAs (0.465 g/kg BW) and ACr (0.155 g/kg BW, a 2 g HED). All animals were trained with treadmill exercise for 10 days. On the day of the single-dose experiment, rats were exercised at 26 m/min for 2 h and then fed, via oral gavage, study product. One hour after the consumption of study product, rats were injected with a bolus dose (250 mg/kg BW, 25 g/L) of phenylalanine labeled with deuterium to measure the fractional rate of protein synthesis (FSR). Ten minutes later, muscle tissue samples were taken to determine MPS measured by FSR and the phosphorylation of proteins involved in the mTOR pathway including mTOR, S6K1, and 4E-BP1.

Results: ACr combined with BCAAs increased MPS by 71% compared to the exercise control group, while BCAAs alone increased MPS by 57% over control (p < 0.05). ACr plus BCAAs significantly enhanced phosphorylation of mTOR, S6K1 and 4E-BP1 compared to exercise control rats (p < 0.05). The addition of ACr to BCAAs enhanced insulin levels, mTOR and S6K1 phosphorylation compared to BCAAs alone (p < 0.05). Serum insulin concentration was positively correlated with the levels of mTOR, (r = 0.923), S6K1 (r = 0.814) and 4E-BP1 (r = 0.953).

Conclusions: In conclusion, the results of this study provide evidence that the addition of ACr to BCAAs significantly enhances exercise-induced MPS, and the phosphorylation of mTOR signaling proteins, compared to BCAAs and exercise alone.
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http://dx.doi.org/10.1186/s12970-020-00355-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7251890PMC
May 2020

A Dose-Dependent Effect of Carnipure Tartrate Supplementation on Endurance Capacity, Recovery, and Body Composition in an Exercise Rat Model.

Nutrients 2020 May 23;12(5). Epub 2020 May 23.

Lonza Consumer Health Inc., Morristown, NJ 07960, USA.

The objective of this work is to investigate the effects of Carnipure Tartrate (CT) supplementation with or without exercise on endurance capacity, recovery, and fatigue by assessing time to exhaustion as well as body weight and composition in rats. In addition, antioxidant capacity has been evaluated by measuring malondialdehyde (MDA) levels and antioxidant enzyme (superoxide dismutase, SOD; catalase, CAT; glutathioneperoxidase; GSHPx) activities. Fifty-six male Wistar rats were divided into eight groups including seven rats each. A control group did not receive CT nor exercise. Another control group received 200 mg/kg CT without exercise. The other six groups of rats went through an exercise regimen consisting of a 5-day training period with incremental exercise capacity, which was followed by 6 weeks of the run at 25 m/min for 45 min every day. CT was supplemented at 0, 25, 50, 100, 200, and 400 mg/kg per day during the 6 weeks. Rats submitted to exercise and supplemented with CT had a significant and dose-dependent increase in time to exhaustion and this effect seems to be independent of exercise ( < 0.05). Additionally, recovery and fatigue were improved, as shown by a significant and dose-dependent decrease in myoglobin and lactic acid plasma levels, which are two markers of muscle recovery. CT supplementation led to a dose-response decrease in body weight and visceral fat. These effects become significant at 200 and 400 mg/kg doses ( < 0.05). Additionally, the antioxidant capacity was improved, as shown by a significant and dose-dependent increase in SOD, CAT, and GSHPx. Serum MDA concentrations decreased in exercising rats with CT supplementation. CT supplementation led to a decrease in serum glucose, triglycerides, and total cholesterol concentrations with the lowest levels observed at 400 mg/kg dose ( < 0.05). These effects correlated with a significant dose-dependent increase in serum total L-carnitine, free L-carnitine, and acetyl-carnitine, which linked the observed efficacy to CT supplementation. These results demonstrate that CT supplementation during exercise provides benefits on exercise performance, recovery, and fatigue as well as improved the lipid profile and antioxidant capacity. The lowest dose leads to some of these effects seen in rats where 25 mg/kg corresponds to 250 mg/day as a human equivalent.
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http://dx.doi.org/10.3390/nu12051519DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7284330PMC
May 2020

Effects of walnut oil on metabolic profile and transcription factors in rats fed high-carbohydrate-/-fat diets.

J Food Biochem 2020 07 18;44(7):e13235. Epub 2020 May 18.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig, Turkey.

The aim of this study was to examine the effects of walnut oil (WO) on metabolic profile and transcription factors in rats fed high carbohydrate (HCD) and high-fat diet (HFD). Forty-two male rats were divided in to six groups: (a) Control, (b) WO (20 mg/kg BW), (c) HCD (20% of sucrose), (d) HCD + WO (e) HFD (42% of calories as fat), and (f) HFD + WO. HFD and HCD intake increased final body weights by 19% and 23% and visceral fat weights by 3- and 5-fold, respectively (p < .05 for all). In addition, serum glucose, total cholesterol, triglyceride, and free fatty acids (FFA) insulin, leptin, and MDA levels increased in rats fed with HFD and HCD. WO supplementation improved these metabolic parameters (p < .05 for all). HFD + WO and HCD + WO treated groups had a significant reduction in serum and liver malondialdehyde (MDA) levels by 12% or 15% (p < .05 for both). In addition, WO supplementation lowered the levels of hepatic nuclear factor kappa B (NF-κB) and NADPH oxidase subunit p22 , whereas increased the endothelial-NO synthase (e-NOS), nuclear factor erythroid 2-related factor-2, and sirtuin-1 levels. In conclusion, WO supplementation could alleviate the adverse impacts of both HCD and HFD in the rats. PRACTICAL APPLICATIONS: This study suggests that WO intake can modulate carbohydrate metabolism and increase antioxidant capacity. These properties might be partially mediated through the regulation of the transcription factors and some proteins involved in energy metabolism, as well as a balance of oxidative stress, and insulin sensitivity.
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http://dx.doi.org/10.1111/jfbc.13235DOI Listing
July 2020

The effects of chromium picolinate on glucose and lipid metabolism in running rats.

J Trace Elem Med Biol 2020 Mar 12;58:126434. Epub 2019 Nov 12.

Department of Animal Nutrition, Faculty of Veterinary Medicine, Firat University, Elazig 23119, Turkey. Electronic address:

Background: Chromium picolinate (CrPic) is commonly used to reduce muscle fatigue after exercise. We aimed to elucidate the effects of CrPic on glucose and lipid metabolism and the expression of glucose transporters in exercised rats.

Methods: Forty-two male Wistar rats (8-week-old) were distributed into six groups (n = 7) as follows: Control, CrPic, Chronic Exercise (CEx), CEx + CrPic, Acute Exercise (AEx), and AEx + CrPic. CEx consists of 30 m/min, 30 min/day, and 5 days/week for 6 weeks. CrPic was supplemented at 400 μg elemental Cr/kg of diet for 6 weeks. In the AEx groups, animals were run on the treadmill at 30 m/min until exhaustion.

Results: CEx significantly lowered blood glucose (BG), total cholesterol (TC) and triglyceride (TG) levels, but elevated insulin concentration (IC), compared with control (P < 0.05). CEx significantly decreased the level of malondialdehyde (MDA) in the serum, liver, and muscle while AEx elevated it (P < 0.001 for all). CrPic significantly decreased BG, TC, TG levels, and increased IC with a remarkable effect in CEx rats (P < 0.01). CrPic also significantly reduced serum, liver, and muscle MDA levels (P < 0.001). Both AEx and CEx increased the expression of liver glucose transporter 2 (GLUT-2) and muscle GLUT-4 with the highest level in CEx rats (P < 0.05). Moreover, CrPic supplementation significantly elevated GLUT-2 and GLUT-4 expressions in the liver and muscle of sedentary and exercise-treated rats (P < 0.05).

Conclusion: CrPic improves various metabolic parameters and reduces oxidative stress in CEx and AEx rats by decreasing BG, TC, TG, MDA levels in serum and elevating GLUT-2 and GLUT-4 expression in the liver and muscle samples. The efficacy of CrPic was more pronounced in CEx rats.
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http://dx.doi.org/10.1016/j.jtemb.2019.126434DOI Listing
March 2020

Epigallocatechin 3-gallate attenuates arthritis by regulating Nrf2, HO-1, and cytokine levels in an experimental arthritis model.

Biotechnol Appl Biochem 2020 May 5;67(3):317-322. Epub 2019 Dec 5.

Department of Rheumatology, Firat University School of Medicine, Elazig, Turkey.

Epigallocatechin 3-gallate (EGCG) is a polyphenol that has been shown to have antioxidant and anti-inflammatory effects. In this study, collagen-induced arthritis (CIA) model, in Wistar albino rats, was used to elucidate the effect of EGCG on pathogenetic pathways in inflammatory arthritis. The levels of serum TNF-α, IL-17, malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx); the expression levels of tissue heme oxygenase-1 (HO-1) and nuclear factor erythroid 2-related factor 2 (Nrf2); histopathologically, perisynovial inflammation and cartilage-bone destruction were examined. In the sham group, serum TNF-α, IL-17, and MDA levels increased, while SOD, CAT, GPx levels, and the expressions of Nrf2 and HO-1 decreased. On the other hand, in the EGCG administered groups, serum TNF-α, IL-17, and MDA levels improved, while SOD, CAT, GPx levels and the expressions of Nrf2 and HO-1 increased. Moreover, histopathological analysis has shown that perisynovial inflammation and cartilage-bone destruction decreased in the EGCG administered groups. These results suggest that EGCG has an antiarthritic effect by regulating the oxidative-antioxidant balance and cytokine levels in the CIA model, which is a surrogate experimental model of rheumatoid arthritis.
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http://dx.doi.org/10.1002/bab.1860DOI Listing
May 2020

Prenatal Ultrasound Detection of Mirror Twins With a Fused Proximal Umbilical Cord.

J Ultrasound Med 2020 Apr 30;39(4):833-835. Epub 2019 Oct 30.

Department of Obstetrics and Gynecology, Bezmialem University Faculty of Medicine, Istanbul, Turkey.

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http://dx.doi.org/10.1002/jum.15160DOI Listing
April 2020
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