841 results match your criteria dexamethasone-treated rats


An investigation of the anti-inflammatory effects of gabapentin on acetic acid-induced colitis in rats.

Mol Biol Rep 2021 Apr 29. Epub 2021 Apr 29.

Department of Pharmacology and Toxicology, School of Pharmacy, Guilan University of Medical Sciences, Rasht, Iran.

Inflammatory bowel disease (IBD) is considered a chronic inflammatory gastrointestinal disease with treatment options which exhibit low efficacies and lead to considerable side effects. Hence, the challenge to alleviate IBD complications is remained to be resolved. The purpose of this study is evaluating anti-inflammatory impacts of gabapentin on acetic acid-induced colitis in rats. Read More

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Protein profiling identified mitochondrial dysfunction and synaptic abnormalities after dexamethasone intervention in rats with traumatic brain injury.

Neural Regen Res 2021 Dec;16(12):2438-2445

Department of Neurotrauma, Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute; Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University; Center for Nerve Injury and Repair, Beijing Institute of Brain Disorders; China National Clinical Research Center for Neurological Diseases, Beijing, China.

Dexamethasone has been widely used after various neurosurgical procedures due to its anti-inflammatory property and the abilities to restore vascular permeability, inhibit free radicals, and reduce cerebrospinal fluid production. According to the latest guidelines for the treatment of traumatic brain injury in the United States, high-dose glucocorticoids cause neurological damage. To investigate the reason why high-dose glucocorticoids after traumatic brain injury exhibit harmful effect, rat controlled cortical impact models of traumatic brain injury were established. Read More

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December 2021

Dexamethasone induces an imbalanced fetal-placental-maternal bile acid circulation: involvement of placental transporters.

BMC Med 2021 Apr 7;19(1):87. Epub 2021 Apr 7.

Department of Obstetrics and Gynaecology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.

Background: The use of prenatal dexamethasone remains controversial. Our recent studies found that prenatal dexamethasone exposure can induce maternal intrahepatic cholestasis and have a lasting adverse influence on bile acid (BA) metabolism in the offspring. The purpose of this study was to investigate the effects of dexamethasone on fetal-placental-maternal BA circulation during the intrauterine period, as well as its placental mechanism. Read More

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Circadian clock gene BMAL1 controls testosterone production by regulating steroidogenesis-related gene transcription in goat Leydig cells.

J Cell Physiol 2021 Feb 17. Epub 2021 Feb 17.

Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China.

Testosterone is produced by Leydig cells (LCs) and undergoes diurnal changes in serum levels in rats, mice, and humans, but little is known in goats. The present study revealed that goat serum testosterone levels displayed diurnal rhythmic changes (peak time at ZT11.2). Read More

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February 2021

POSSIBLE EFFECTS OF ELECTRIC-MAGNETIC STIMULATION ON HYPOTHALMIC-HYPOPHISIAL-ADRENAL AXIS: BEHAVIOURAL STUDY.

Georgian Med News 2020 Dec(309):141-145

2European University, Tbilisi; Georgia.

The goal of this investigation was to study the effect of the electric-magnetic stimulation (EMS) on the activity of the HPA axis, which can change behavior activity. The experiments were conducted on mongrel, albino male rats, weighing 150- 200 g (n=14). Proceeding from the goals set, the experimental group (dexamethasone-treated-1mg/ per animal for 10 days) and the control group of rats were involved in the experiments. Read More

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December 2020

Resistance training prevents the reduction of insulin-mediated vasodilation in the mesenteric artery of dexamethasone-treated rats.

An Acad Bras Cienc 2020 14;92(4):e20200316. Epub 2020 Dec 14.

Universidade Federal de Sergipe, Departamento de Fisiologia, Laboratório de Farmacologia Cardiovascular, Avenida Marechal Rondon, s/n, Rosa Elze, 49100-100 São Cristovão, SE, Brazil.

This study evaluated whether resistance training (RT) could prevent glucocorticoid-induced vascular changes. Wistar rats were divided into groups: control (CO), dexamethasone (DEX), and Dexamethasone+RT (DEX+RT). On the eighth week, dexamethasone was administered in the DEX and DEX+RT groups. Read More

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December 2020

Highly bioavailable Berberine formulation improves Glucocorticoid Receptor-mediated Insulin Resistance reduction in association of the Glucocorticoid Receptor with phosphatidylinositol-3-kinase.

Int J Biol Sci 2020 19;16(14):2527-2541. Epub 2020 Jul 19.

Department of Pharmacology, College of Basic Medical Sciences, Jilin University, Changchun, Jilin, China.

Excess glucocorticoid (GC) production is known to induce obesity and insulin resistance through increased activation of the glucocorticoid receptor (GR). The molecular mechanism for the non-genomic effects of excessive circulating GC on the insulin-signalling pathway in skeletal muscle is unknown. The plant alkaloid berberine has been shown to attenuate insulin resistance and inhibit gluconeogenesis in type 2 diabetic animals. Read More

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Leonurine protects against dexamethasone-induced cytotoxicity in pancreatic β-cells via PI3K/Akt signaling pathway.

Biochem Biophys Res Commun 2020 08 18;529(3):652-658. Epub 2020 Jul 18.

Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, China. Electronic address:

Glucocorticoid excess induces pancreatic β-cell apoptosis and insulin secretion impairment, which may lead to hyperglycemia and steroid diabetes. Leonurine is a natural alkaloid extracted from the Herba leonuri, which has been widely used in the treatment of obstetric and gynecological diseases. However, whether leonurine performs a protective role in pancreatic β-cells remains unknown. Read More

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Systemic effects of starved fibroblast culture supernatant on immunosuppressed rats treated with cancer stem cells (LA7).

Caspian J Intern Med 2020 ;11(2):135-142

Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.

Background: The present study aimed to investigate and compare the effect of starved fibroblast culture supernatant (SFS), DMEM and normal saline alone or along with LA7 on dexamethasone-treated immunosuppressed Wistar rats.

Methods: After the isolation of fibroblasts from the fresh foreskin of children, it was cultured in serum-free DMEM, and the supernatant collected after 16 hours (16h-SFS). This solution and the other treatments were injected subcutaneously into the rats from each group once daily for 14 days. Read More

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January 2020

Differential Effects of Low- and High-Dose Dexamethasone on Electrically Induced Damage of the Cultured Organ of Corti.

Neurotox Res 2020 Aug 3;38(2):487-497. Epub 2020 Jun 3.

Department of Otorhinolaryngology, Head and Neck Surgery, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.

An increased number of patients with residual hearing are undergoing cochlear implantation. A subset of these experience delayed hearing loss post-implantation, and the aetiology of this loss is not well understood. Our previous studies suggest that electrical stimulation can induce damage to hair cells in organ of Corti (OC) organotypic cultures. Read More

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Trigonelline Demonstrated Ameliorative Effects in Dexamethasone Induced Osteoporotic Rats.

Drug Res (Stuttg) 2020 Jun 14;70(6):257-264. Epub 2020 Apr 14.

Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India.

Aim: Trigonelline is a potent phytochemical present in fenugreek, which has strong anti-oxidant and phytoestrogenic activities. This study was carried out to investigate this estrogenic activity as a possible mechanisms involved in preventing the symptoms of osteoporosis in dexamethasone induced osteoporosis in rats.

Materials And Methods: Wistar rats were randomly divided into eight groups, six animals in each group. Read More

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Effects of high doses of glucocorticoids on insulin-mediated vasodilation in the mesenteric artery of rats.

PLoS One 2020 18;15(3):e0230514. Epub 2020 Mar 18.

Laboratory of Cardiovascular Pharmacology, Department of Physiology, Federal University of Sergipe, Sao Cristovao, Sergipe, Brazil.

Several pathological conditions predict the use of glucocorticoids for the management of the inflammatory response; however, chronic or high dose glucocorticoid treatment is associated with hyperglycemia, hyperlipidemia, and insulin resistance and can be considered a risk factor for cardiovascular disease. Therefore, we investigated the mechanisms involved in the vascular responsiveness and inflammatory profile of mesenteric arteries of rats treated with high doses of glucocorticoids. Wistar rats were divided into a control (CO) group and a dexamethasone (DEX) group, that received dexamethasone for 7 days (2mg/kg/day, i. Read More

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Hydro-Ethanolic Extract of Ameliorates Total and Differential WBC, Lung Pathology and Oxidative Biomarkers in Asthmatic Rats.

Iran J Pharm Res 2019 ;18(4):1947-1958

Clinical Research Unit, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

The effects of (; PO) on total and differential WBC count, and oxidant/antioxidant biomarkers in bronchoalveolar lavage fluid (BALF) as well as on lung pathology in asthmatic rats were examined. Rats were randomly divided into; control group (C), asthma group, asthma groups treated with either (rats that received PO 1, 2 and 4 mg/mL) or dexamethasone 1.25 μg/mL (D), (n = 8 in each group). Read More

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January 2019

NOX-dependent reactive oxygen species production underlies arrhythmias susceptibility in dexamethasone-treated rats.

Free Radic Biol Med 2020 05 5;152:1-7. Epub 2020 Mar 5.

Department of Physiology, Federal University of Sergipe, São Cristóvão, Brazil; Cedars-Sinai Medical Center, Smidt Heart Institute, Los Angeles, United States. Electronic address:

Dexamethasone is the most clinically used glucocorticoid with an established role in the treatment of a wide spectrum of inflammatory-related diseases. While the therapeutic actions are well known, dexamethasone treatment causes a number of cardiovascular side effects, which are complex, frequent and, in some cases, clinically unnoticeable. Here, we investigated whether a therapeutic regimen of dexamethasone affects cardiac arrhythmogenesis, focusing on the contribution of Nox-derived reactive oxygen species (ROS). Read More

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Tanshinone IIA Improves Depression-like Behavior in Mice by Activating the ERK-CREB-BDNF Signaling Pathway.

Neuroscience 2020 03 31;430:1-11. Epub 2020 Jan 31.

Institute of Neuroscience, Soochow University, Suzhou City, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases, Soochow University, Suzhou, Jiangsu 215123, China. Electronic address:

Depression is a serious global affective disorder and one of the most common neurological diseases. Tanshinone IIA (TSA) is the mainly active constituent of Salvia miltiorrhiza and has diverse biological effects, including anti-inflammatory and antioxidant effects and significant neuroprotective effects against cerebral ischemia and Alzheimer's disease. However, whether TSA has an antidepressant effect remains unknown. Read More

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MicroRNA-126 upregulation, induced by training, plays a role in controlling microcirculation in dexamethasone treated rats.

Mol Cell Endocrinol 2020 04 25;505:110732. Epub 2020 Jan 25.

Joint Graduate Program in Physiological Sciences, PIPGCF UFSCar/UNESP, Rodovia Washington Luiz, km 235 Monjolinho 676, CEP:13565-90, São Carlos, SP, Brazil; Department of Physical Education - São Paulo State University (UNESP), School of Sciences, Av. Eng. Luiz Edmundo Carrijo Coube, 14-01, Vargem Limpa, CEP 17033-360, Bauru, SP, Brazil. Electronic address:

Microcirculation maintenance is associated with microRNAs. Nevertheless, the role of microRNAs induced by training in preventing dexamethasone (DEX)-induced microvascular rarefaction remains unknown. The study aim was to investigate if training-induced microRNAs are able to improve microcirculation proteins and prevent DEX-induced microvascular rarefaction. Read More

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Myofibrillar function differs markedly between denervated and dexamethasone-treated rat skeletal muscles: Role of mechanical load.

PLoS One 2019 9;14(10):e0223551. Epub 2019 Oct 9.

Graduate School of Health Sciences, Sapporo Medical University, Sapporo, Japan.

Although there is good evidence to indicate a major role of intrinsic impairment of the contractile apparatus in muscle weakness seen in several pathophysiological conditions, the factors responsible for control of myofibrillar function are not fully understood. To investigate the role of mechanical load in myofibrillar function, we compared the skinned fiber force between denervated (DEN) and dexamethasone-treated (DEX) rat skeletal muscles with or without neuromuscular electrical stimulation (ES) training. DEN and DEX were induced by cutting the sciatic nerve and daily injection of dexamethasone (5 mg/kg/day) for 7 days, respectively. Read More

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Commercial Quinolone Ear Drops Cause Perforations in Intact Rat Tympanic Membranes.

Otol Neurotol 2019 12;40(10):1386-1391

Department of Otolaryngology, University of Florida College of Medicine, Gainesville, Florida.

Hypothesis: Commercial quinolone ear drops may promote the development of perforations (TMPs) in intact tympanic membrane (TMs).

Background: Quinolone ear drops have been associated with TMPs after myringotomy +/- tube placement in a drug-specific manner and potentiation by steroids.

Methods: Rats were randomized to six groups (10/group), with one ear receiving otic instillation of dexamethasone, ofloxacin, ciprofloxacin, ofloxacin + dexamethasone, ciprofloxacin + dexamethasone, or neomycin + polymyxin + hydrocortisone-all commercial formulations and at standard clinical concentrations-and the contralateral ear receiving saline, twice daily for 10 days. Read More

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December 2019

Exosomes derived from Wharton's jelly of human umbilical cord mesenchymal stem cells reduce osteocyte apoptosis in glucocorticoid-induced osteonecrosis of the femoral head in rats via the miR-21-PTEN-AKT signalling pathway.

Int J Biol Sci 2019 20;15(9):1861-1871. Epub 2019 Jul 20.

Department of Orthopedics, Tianjin Hospital, Tianjin 300211, People's Republic of China.

: Glucocorticoid-induced osteonecrosis of the femoral head (GIONFH) is a common disease after long-term or high-dose glucocorticoid use. The pathogenesis of GIONFH is still controversial, and abnormal bone metabolism caused by glucocorticoids may be one of the important factors. Exosomes, owing to their positive effect on bone repair, show promising therapeutic effects on bone-related diseases. Read More

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Insulin signaling pathway in the masseter muscle of dexamethasone-treated rats.

Interv Med Appl Sci 2018 Dec;10(4):226-232

Department of Morphology, Center of Biological Sciences and Health, Federal University of Sergipe, São Cristóvão, Brazil.

Background And Aims: The treatment with glucocorticoids may induce molecular changes in the level and/or degree of phosphorylation of proteins located downstream of the insulin receptor/insulin-like growth factor receptor (IR/IGF1R) in many tissues. However, few studies have investigated the intracellular insulin pathway in the masseter muscle. Therefore, this study aimed to analyze the IR/IGF1R signaling pathway in the masseter muscle of rats treated with dexamethasone. Read More

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December 2018

Effects of Mandibular Extension on Pial Arteriolar Diameter Changes in Glucocorticoid-Induced Hypertensive Rats.

Front Physiol 2019 7;10. Epub 2019 Feb 7.

Department of Translational Research on New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy.

Previously, in normotensive rats, it has been observed that a repetitive sub-maximal mouth opening (mandibular extension, ME) obtained by placing a home-made U-shaped dilator between the superior and inferior dental arches of the rat caused modulation of pial arteriolar tone. The present study was aimed to characterize pial microcirculation in two different cortical brain regions and to assess the hemodynamic effects of a single or double ME on pial arteriolar rhythmic diameter changes in rats rendered hypertensive by dexamethasone administrations. Cranial windows were prepared on parietal and frontal region. Read More

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February 2019

Intraocular pressure-lowering effects of imidazo[1,2-a]- and pyrimido[1,2-a]benzimidazole compounds in rats with dexamethasone-induced ocular hypertension.

Eur J Pharmacol 2019 May 1;850:75-87. Epub 2019 Feb 1.

International Medical University, IMU Clinical School, Seremban, Malaysia.

Ocular hypertension is believed to be involved in the etiology of primary open-angle glaucoma. Although many pharmaceutical agents have been shown to be effective for the reduction of intraocular pressure (IOP), a significant opportunity to improve glaucoma treatments remains. Thus, the aims of the present study were: (1) to evaluate the IOP-lowering effect of four compounds RU-551, RU-555, RU-839 (pyrimido[1,2-a]benzimidazole), and RU-615 (imidazo[1,2-a]benzimidazole) on steroid-induced ocular hypertension in rats after single drop and chronic applications; and (2) to test in silico and in vitro conventional rho-associated kinase (ROCK) inhibitory activity of the selected compound. Read More

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Cinnamaldehyde and eugenol attenuates collagen induced arthritis via reduction of free radicals and pro-inflammatory cytokines.

Phytomedicine 2019 Feb 5;53:70-78. Epub 2018 Sep 5.

Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India. Electronic address:

Background: Rheumatoid arthritis (RA) is an inflammatory autoimmune disease which leads to bone and cartilage erosion. Oxidative stress and pro-inflammatory cytokines plays crucial role in the pathophysiology of RA. Cinnamaldehyde and eugenol have a long history of medical use in various inflammatory disorders. Read More

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February 2019

Aberrant DNA methylation of hypothalamic angiotensin receptor in prenatal programmed hypertension.

JCI Insight 2018 11 2;3(21). Epub 2018 Nov 2.

Division of Clinical Epigenetics, Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Tokyo, Japan.

Maternal malnutrition, which causes prenatal exposure to excessive glucocorticoid, induces adverse metabolic programming, leading to hypertension in offspring. In offspring of pregnant rats receiving a low-protein diet or dexamethasone, a synthetic glucocorticoid, mRNA expression of angiotensin receptor type 1a (Agtr1a) in the paraventricular nucleus (PVN) of the hypothalamus was upregulated, concurrent with reduced expression of DNA methyltransferase 3a (Dnmt3a), reduced binding of DNMT3a to the Agtr1a gene, and DNA demethylation. Salt loading increased BP in both types of offspring, suggesting that elevated hypothalamic Agtr1a expression is epigenetically modulated by excessive glucocorticoid and leads to adult-onset salt-sensitive hypertension. Read More

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November 2018

Evaluation of dexamethasone treated mesenchymal stem cells for recovery in neurotmesis model of peripheral nerve injury.

Neurol Res 2018 Dec 22;40(12):1060-1070. Epub 2018 Sep 22.

e Department of Physical Medicine, and Rehabilitation , Iran University of Medical Sciences , Tehran , Iran.

Objective: Peripheral nerve injuries comprise significant portion of the nervous system injuries. Although peripheral nerves show some capacity of regeneration after injury, the extent of regeneration is not remarkable. The present study aimes to evaluate the regeneration of transected sciatic nerve by a therapeutic value of dexamethasone (DEX) associated with cell therapy (Cell) and biodegradable membrane (Mem) in rat. Read More

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December 2018

Dexamethasone as endocrine disruptor; type I and type II (anti) oestrogenic actions on the ovary and uterus of adult Wistar rats ().

JBRA Assist Reprod 2018 Nov 1;22(4):307-313. Epub 2018 Nov 1.

Anatomy Department, Faculty of Basic Medical Sciences, College of Health Sciences, Osun State University, Osogbo, Nigeria.

Objective: Dexamethasone is a widely used glucocorticoid, which has been prescribed increasingly in recent years. The effects of Dexamethasone on the ovary and uterus was investigated in present study.

Methods: Twenty (20) adult female Wistar rats, weighing 130-170 g were assigned to four (4) groups of five (5) animals each. Read More

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November 2018

Rosmarinic acid affects immunological and inflammatory mediator levels and restores lung pathological features in asthmatic rats.

Allergol Immunopathol (Madr) 2019 Jan - Feb;47(1):16-23. Epub 2018 Jul 6.

Neurogeneeic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. Electronic address:

Background: The effects of rosmarinic acid (RA) on immunological and inflammatory mediator levels in bronchoalveolar lavage fluid (BALF) as well as lung pathological changes in asthmatic rats were investigated.

Methods: The levels of IFN-γ, IL-4, IFN-γ/IL-4 ratio, IgE, PLA, and total protein (TP) in BALF and pathological changes in the lung were evaluated in control group (C), asthma group (sensitized to ovalbumin) (A), asthma groups treated with RA and dexamethasone.

Results: Compared to the control group, asthmatic rats showed increased levels of IL-4, IgE, PLA2, and TP as well as all pathological scores with decreased levels of IFN-γ and IFN-γ/IL-4 ratio (P<0. Read More

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The possible anti-apoptotic and antioxidant effects of acetyl l-carnitine as an add-on therapy on a relapsing-remitting model of experimental autoimmune encephalomyelitis in rats.

Biomed Pharmacother 2018 Jul 7;103:1302-1311. Epub 2018 May 7.

Department of pharmacology, Faculty of medicine, Tanta University, Egypt.

Multiple sclerosis (MS) is a progressive inflammatory autoimmune demyelinating disease of the brain and spinal cord. Glucocorticoids (GCs) are the standard treatment of MS, however they have several drawbacks like oxidative stress and apoptosis. This study was designed to evaluate some possible antioxidant, anti-apoptotic and immune modulatory effects of Acetyl-l-carnitine (ALCAR) when used either alone or as an add-on therapy with dexamethasone for treatment of a relapsing-remitting (RR) experimental autoimmune encephalomyelitis (EAE) as a model of MS. Read More

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Safflower (Carthamus tinctorius L.) polysaccharide attenuates cellular apoptosis in steroid-induced avascular necrosis of femoral head by targeting caspase-3-dependent signaling pathway.

Int J Biol Macromol 2018 Sep 3;116:106-112. Epub 2018 May 3.

The Second Department of Orthopedics, Guiyang Fourth People's Hospital, Guiyang 550003, China.

The present study aimed to investigate the effects of a purified polysaccharide (SPS) from the safflower in a cellular model of steroid-associated necrosis of the femoral head (SANFH), which was established in primary murine osteoblasts suffering dexamethasone pretreatment. After treatment with SPS (25, 50 and 100 μg/ml), the degree of necrosis induced by dexamethasone was significantly reduced in osteoblasts as evidenced by an increase of cell viability and a decrease of apoptosis in osteoblasts. Furthermore, pretreatment with SPS (25, 50 and 100 μg/ml) significantly attenuated the activation of caspase-3 and cleavage of PARP relative to the model control cells. Read More

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September 2018

The Effect of Allium cepa Extract on Lung Oxidant, Antioxidant, and Immunological Biomarkers in Ovalbumin-Sensitized Rats.

Med Princ Pract 2018 22;27(2):122-128. Epub 2018 Feb 22.

Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

Objectives: To evaluate the effects of Allium cepa (A. cepa) on levels of oxidants, antioxidants, and immunological markers in bronchoalveolar lavage fluids (BALF) of sensitized rats.

Materials And Methods: Oxidant/antioxidant markers and cytokines in BALF of control rats treated with saline (group C), ovalbumin-sensitized rats (group S), rats treated with 1. Read More

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November 2018