2,955 results match your criteria Vitamin A Toxicity


β-apo-10'-carotenoids support normal embryonic development during vitamin A deficiency.

Sci Rep 2018 Jun 11;8(1):8834. Epub 2018 Jun 11.

Department of Food Science, Rutgers Center for Lipid Research, and New Jersey Institute for Food, Nutrition, and Health, Rutgers University, New Brunswick, New Jersey, 08901, United States.

Vitamin A deficiency is still a public health concern affecting millions of pregnant women and children. Retinoic acid, the active form of vitamin A, is critical for proper mammalian embryonic development. Embryos can generate retinoic acid from maternal circulating β-carotene upon oxidation of retinaldehyde produced via the symmetric cleavage enzyme β-carotene 15,15'-oxygenase (BCO1). Read More

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Vitamin A-decorated biocompatible micelles for chemogene therapy of liver fibrosis.

J Control Release 2018 May 29;283:113-125. Epub 2018 May 29.

State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Key Laboratory of Druggability of Biopharmaceuticals, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, Nanjing 210009, China. Electronic address:

Liver fibrosis refers to excessive accumulation of hepatic collagen, which is primarily produced by activated hepatic stellate cells (HSCs). No effective drugs are clinically available to treat this condition, reflecting the fact that antifibrotic drugs do not specifically target activated HSCs. Here, we report the synthesis and evaluation of poly (lactide-co-glycolide)-polyspermine-poly (ethylene glycol)-vitamin A (PLGA-PSPE-PEG-VA), and activated HSC-targeted, biocompatible amphiphilic polymers for co-delivery of chemical (silibinin) and genetic (siCol1α1) drugs that synergistically suppress collagen I accumulation in fibrogenesis. Read More

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Pseudotumor Cerebri Syndrome with Resolution After Discontinuing High Vitamin A Containing Dietary Supplement: Case Report and Review.

Neuroophthalmology 2018 Jun 1;42(3):169-175. Epub 2017 Sep 1.

Department of Neurology, University of Kentucky, Lexington, Kentucky, USA.

A 24-year-old non-obese, but slightly overweight, female presented with a two-week history of progressive severe headache associated with two days of blurry vision. Clinical exam was significant for bilateral papilledema and an enlarged blind spot on visual field testing. Contrast enhanced MRI head revealed no space occupying lesion. Read More

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Studies of indirect and direct effects of hypervitaminosis A on rat bone by comparing free access to food and pair-feeding.

Ups J Med Sci 2018 Apr 26:1-4. Epub 2018 Apr 26.

a Department of Medical Sciences , Section of Clinical Pharmacology, Uppsala University , Uppsala , Sweden.

Background: The most prominent features of hypervitaminosis A in rats are spontaneous fractures and anorexia. Since caloric restriction induces alterations in bone, some effects could be secondary to loss of appetite. To clarify the mechanisms behind vitamin A-induced bone fragility it is necessary to distinguish between direct and indirect effects. Read More

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Encapsulation and controlled release of retinol from silicone particles for topical delivery.

J Control Release 2018 May 28;278:37-48. Epub 2018 Mar 28.

NSF Research Triangle Materials Research Science and Engineering Center, Duke University, Durham, NC 27708, USA; Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, USA; Department of Chemistry, Duke University, Durham, NC 27708, USA. Electronic address:

Retinol, a derivative of vitamin A, is a ubiquitous compound used to treat acne, reduce wrinkles and protect against conditions like psoriasis and ichthyosis. While retinol is used as the primary active ingredient (AI) in many skin care formulations, its efficacy is often limited by an extreme sensitivity to degrade and toxicity at high concentrations. While microencapsulation is an appealing method to help overcome these issues, few microencapsulation strategies have made a major translational impact due to challenges with complexity, cost, limited protection of the AI and poor control of the release of the AI. Read More

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May 2018
1 Read

Vitamin A Supplementation by Endotracheal Application of a Nano-encapsulated Preparation Is Feasible in Ventilated Preterm Lambs.

J Aerosol Med Pulm Drug Deliv 2018 Mar 27. Epub 2018 Mar 27.

2 Department of Pediatrics, Maastricht University Medical Center , Faculty of Health, Medicine and Lifesciences, School for Oncology and Developmental Biology (GROW), Maastricht, The Netherlands .

Background: Vitamin A (VA) is crucial for lung growth and development. In premature infants, inadequate VA levels are associated with an increased risk of bronchopulmonary dysplasia (BPD). Intramuscular VA supplementation has been shown to decrease the incidence of BPD, but is not widely used in the clinical setting due to concerns about feasibility and pain. Read More

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March 2018
3 Reads

A Possible Link Between Pyriproxyfen and Microcephaly.

PLoS Curr 2017 Nov 27;9. Epub 2017 Nov 27.

Department of Complex Systems, New England Complex Systems Institute, Cambridge, MA, USA.

The Zika virus has been the primary suspect in the large increase in incidence of microcephaly in 2015-6 in Brazil. While evidence for Zika being the cause of some of the cases is strong, its role as the primary cause of the large number of cases in Brazil has not been confirmed. Recently, the disparity between the incidences in different geographic locations has led to questions about the virus's role. Read More

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November 2017

Teratogenic potential of nanoencapsulated vitamin A evaluated on an alternative model organism, the tunicate Ciona intestinalis.

Int J Food Sci Nutr 2018 Jan 16:1-9. Epub 2018 Jan 16.

a Department of Environmental Science and Policy , University of Milan , Milan , Italy.

Nano-encapsulation is a technology used to pack substances in order to enhance their stability and bioavailability, but this packing may interact with living systems, causing unexpected toxicity. Vitamin A (vit A) is a substance that has received attention, because in developed countries, the increasing availability of supplements is leading to its excessive intake. This study aims to compare teratogenic effects caused by exposure to the traditional formulation of vit A versus nano-encapsulated vit A. Read More

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January 2018
2 Reads

Hypercalcemia and acute renal insufficiency following use of a veterinary supplement.

J Bras Nefrol 2017 Oct-Dec;39(4):467-469

Universidade Federal de Santa Catarina, Centro de Ciências da Saúde, Florianópolis - SC, Brazil.

A previously healthy 24 yo male presented with a two-month history of epigastric pain, nausea, vomiting, fatigue and malaise. He reported abuse of different substances, including an injectable veterinary vitamin compound, which contains high doses of vitamin A, D and E, and an oily vehicle that induces local edema and enhances muscle volume. Serum creatinine was 3. Read More

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April 2017
2 Reads

Retinoid Expression in Onchocercal Skin Disease: Pilot Study.

Infect Dis (Auckl) 2017 20;10:1178633617731741. Epub 2017 Sep 20.

Tukuyu Research Centre, National Institute for Medical Research, Tanzania, Tukuyu, Tanzania.

Based on the observation that the parasite selectively absorbs vitamin A from the host, and the known toxicity of vitamin A in higher concentration, it was hypothesized that dying microfilariae (mf) release their stores of vitamin A (retinoids) into the host circulation in toxic concentrations, inducing the signs and symptoms of onchocerciasis. We conducted a pilot study to test the hypothesis in Songea communities in Southern Tanzania, where mass drug administration with ivermectin had not been implemented by the time of the survey. The specific aim was to evaluate the correlation between the diagnosis of onchocerciasis and increased levels of retinoic acid at infection sites. Read More

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September 2017
4 Reads

Toxic responses of Sox2 gene in the regeneration of the earthworm Eisenia foetida exposed to Retnoic acid.

Comp Biochem Physiol C Toxicol Pharmacol 2018 Jan 8;204:106-112. Epub 2017 Dec 8.

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China; Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China. Electronic address:

Exogenous retinoic acid delays and disturbs the regeneration of Eisenia foetida. The stem cell pluripotency factor, Sox2, can play a crucial role in cell reprogramming and dedifferentiation. In this study, we compared the regeneration of Eisenia foetida in different segments after amputation and the effects of retinoic acid on the regeneration of different segments. Read More

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January 2018
8 Reads

All-trans-retinoic acid ameliorates doxorubicin-induced cardiotoxicity: in vivo potential involvement of oxidative stress, inflammation, and apoptosis via caspase-3 and p53 down-expression.

Naunyn Schmiedebergs Arch Pharmacol 2018 Jan 30;391(1):59-70. Epub 2017 Oct 30.

Department of Forensic Medicine and Toxicology, Faculty of Veterinary Medicine, Damanhour University, Damanhour, 22511, Egypt.

The present study aimed to investigate the potential protective effect of all-trans-retinoic acid (ATRA, a natural derivative of vitamin A) against doxorubicin (DOX)-induced in vivo cardiac toxicity and its underlying mechanisms. Forty male albino rats were allocated into control, ATRA (0.5 mg/kg bwt, intraperitoneally daily), DOX (2. Read More

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January 2018
3 Reads

Excess iron: considerations related to development and early growth.

Am J Clin Nutr 2017 Dec 25;106(Suppl 6):1600S-1605S. Epub 2017 Oct 25.

Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA

What effects might arise from early life exposures to high iron? This review considers the specific effects of high iron on the brain, stem cells, and the process of erythropoiesis and identifies gaps in our knowledge of what molecular damage may be incurred by oxidative stress that is imparted by high iron status in early life. Specific areas to enhance research on this topic include the following: longitudinal behavioral studies of children to test associations between iron exposures and mood, emotion, cognition, and memory; animal studies to determine epigenetic changes that reprogram brain development and metabolic changes in early life that could be followed through the life course; and the establishment of human epigenetic markers of iron exposures and oxidative stress that could be monitored for early origins of adult chronic diseases. In addition, efforts to understand how iron exposure influences stem cell biology could be enhanced by establishing platforms to collect biological specimens, including umbilical cord blood and amniotic fluid, to be made available to the research community. Read More

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December 2017
3 Reads

Vitamin A status and its determinants in patients with cystic fibrosis.

Acta Sci Pol Technol Aliment 2017 Jul-Sep;16(3):345-354

Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poland.

Background: Routine administration of vitamin A, recommended in CF patients, can help to prevent its deficiency. However, high vitamin A supplementation may lead to its excessive level and possible toxicity. Therefore, the aim of the present study was to assess the status of vitamin A and the determinants of its body resources in CF patients. Read More

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February 2018
3 Reads

A transcriptomic approach for evaluating the relative potency and mechanism of action of azoles in the rat Whole Embryo Culture.

Toxicology 2017 12 29;392:96-105. Epub 2017 Sep 29.

National Institute of Public Health and the Environment (RIVM), 3720BA Bilthoven, the Netherlands; Institute for Risk Assessment Sciences (IRAS), Utrecht University, 3584CM Utrecht, the Netherlands.

We evaluated the effect of six azoles on embryonic development in the rat whole embryo culture (WEC). Using the total morphological scoring system (TMS), we calculated the ID concentration (effective dose for 10% decrease in TMS). For evaluating gene specific responses, we combined previously and newly collected transcriptomics data of rat WEC exposed to a total of twelve azoles at their ID for 4h. Read More

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December 2017
4 Reads

Hepatic stellate cell-targeted imatinib nanomedicine versus conventional imatinib: A novel strategy with potent efficacy in experimental liver fibrosis.

J Control Release 2017 Nov 28;266:226-237. Epub 2017 Sep 28.

Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.

Liver fibrosis is a global health problem without approved treatment. Imatinib inhibits two key profibrotic pathways; platelet-derived growth factor (PDGF) and transforming growth factor-beta (TGF-β) and thus can be used to treat liver fibrosis. However, conventional imatinib therapy is hampered by low concentration at target tissue and increased toxicity to other tissues especially heart, lung and liver. Read More

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November 2017
4 Reads

HOXA9 is critical in the proliferation, differentiation, and malignancy of leukaemia cells both in vitro and in vivo.

Cell Biochem Funct 2017 Oct 29;35(7):433-440. Epub 2017 Sep 29.

Department of Cardiology, Yishui Center Hospital, Linyi, Shandong Province, China.

Progress in the understanding of the molecular mechanism for acute myeloid leukaemia is of great significance to generate new potential targets for treatment. Recent studies showed that HOXA9, a homeodomain-containing transcription factor, is commonly deregulated in acute leukaemia. In this study, we elucidated the direct correlation between HoxA9 expression and progression of leukaemia using 2 different types of leukaemia cells HL-60 and MOLT-3. Read More

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October 2017
15 Reads

Disease-stabilizing treatment based on all-trans retinoic acid and valproic acid in acute myeloid leukemia - identification of responders by gene expression profiling of pretreatment leukemic cells.

BMC Cancer 2017 Sep 6;17(1):630. Epub 2017 Sep 6.

Section for Hematology, Institute of Clinical Science, University of Bergen, Bergen, Norway.

Background: Acute myeloid leukemia (AML) is an aggressive malignancy only cured by intensive therapy. However, many elderly and unfit patients cannot receive such treatment due to an unacceptable risk of treatment-related morbidity and mortality. Disease-stabilizing therapy is then the only possible strategy, one alternative being treatment based on all-trans retinoic acid (ATRA) combined with the histone deacetylase inhibitor valproic acid and possibly low-toxicity conventional chemotherapy. Read More

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September 2017
5 Reads

Retinoic acid postconsolidation therapy for high-risk neuroblastoma patients treated with autologous haematopoietic stem cell transplantation.

Cochrane Database Syst Rev 2017 08 25;8:CD010685. Epub 2017 Aug 25.

Pediatric Oncology and Hematology, Children's Hospital, University of Cologne, Kerpener Str. 62, Cologne, Germany, 50937.

Background: Neuroblastoma is a rare malignant disease and mainly affects infants and very young children. The tumours mainly develop in the adrenal medullary tissue, with an abdominal mass as the most common presentation. About 50% of patients have metastatic disease at diagnosis. Read More

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August 2017
4 Reads

Double sex and mab-3 related transcription factor 1 regulates differentiation and proliferation in dairy goat male germline stem cells.

J Cell Physiol 2018 Mar 13;233(3):2537-2548. Epub 2017 Sep 13.

College of Veterinary Medicine, Northwest A&F University, Shaanxi Centre of Stem Cells Engineering & Technology, Yangling, Shaanxi, China.

The protein encoded by double sex and mab-3 related transcription factor 1 (Dmrt1) gene contains a double sex/mab-3 domain, which was considered as one of the most conservative structures in sex determination. However, its effect on spermatogenesis of dairy goat spermatogonial stem cells (SSCs) remains to be clarified. For the first time, the roles of Dmrt1 in spermatogenesis of livestock are highlighted. Read More

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March 2018
3 Reads

All--retinoic acid-mediated cytoprotection in LLC-PK renal epithelial cells is coupled to -ERK activation in a ROS-independent manner.

Am J Physiol Renal Physiol 2017 Dec 2;313(6):F1200-F1208. Epub 2017 Aug 2.

Southwest Environmental Health Sciences Center, Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, Arizona; and.

Although all--retinoic acid (ATRA) provides protection against a variety of conditions in vivo, particularly ischemia, the molecular mechanisms underpinning these effects remain unclear. The present studies were designed to assess potential mechanisms by which ATRA affords cytoprotection against renal toxicants in LLC-PK cells. Pretreatment of LLC-PK cells with ATRA (25 μM) for 24 h afforded cytoprotection against oncotic cell death induced by -aminophenol (PAP), 2-(glutathion--yl)hydroquinone (MGHQ), and iodoacetamide but not against apoptotic cell death induced by cisplatin. Read More

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December 2017
7 Reads

Malaria, Epstein-Barr virus infection and the pathogenesis of Burkitt's lymphoma.

Int J Cancer 2017 11 24;141(9):1849-1855. Epub 2017 Jul 24.

Chief, Division of Hematology, Center for Cancer and Blood Disorders, Children's National Medical Center, Associate Professor of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, DC.

A geographical and causal connection has long been recognized between malaria, Epstein-Barr virus (EBV) infection and Burkitt's lymphoma (BL), but the underlying mechanisms remain obscure. Potential clues are that the malaria parasite Plasmodium falciparum selectively absorbs vitamin A from the host and depends on it for its biological activities; secondly, alterations in vitamin A (retinoid) metabolism have been implicated in many forms of cancer, including BL. The first author has proposed that the merozoite-stage malaria parasite, emerging from the liver, uses its absorbed vitamin A as a cell membrane destabilizer to invade the red blood cells, causing anemia and other signs and symptoms of the disease as manifestations of an endogenous form of hypervitaminosis A (Mawson AR, Path Global Health 2013;107(3):122-9). Read More

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November 2017
8 Reads

Comparison of phenotypic and global gene expression changes in Xenopus tropicalis embryos induced by agonists of RAR and RXR.

Toxicol Appl Pharmacol 2017 09 6;330:40-47. Epub 2017 Jul 6.

State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China. Electronic address:

Retinoic acid functions through two classes of receptors, i.e., the retinoic acid receptor (RAR) and the retinoid X receptor (RXR). Read More

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September 2017
5 Reads

Antioxidant Response in Duckweed After Exposure to Secondary Effluent from Municipal Wastewater Treatment Plant, Elazığ, Turkey.

Bull Environ Contam Toxicol 2017 Sep 1;99(3):399-404. Epub 2017 Jul 1.

Department of Environmental Engineering, Faculty of Engineering, Munzur University, 62000, Tunceli, Turkey.

The aim of this study is to evaluate the effects of the effluent of Elazig Municipality Wastewater Treatment Plant on the oxidative defense capacity of aquatic plants (Lemna minor L. and Lemna gibba L.). Read More

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September 2017
5 Reads

Antioxidants Mediate Both Iron Homeostasis and Oxidative Stress.

Nutrients 2017 Jun 28;9(7). Epub 2017 Jun 28.

Department of Nutrition, Precision Nutrition Innovation Center, School of Public Health, Zhengzhou University, Zhengzhou 450001, China.

Oxidative stress is a common denominator in the pathogenesis of many chronic diseases. Therefore, antioxidants are often used to protect cells and tissues and reverse oxidative damage. It is well known that iron metabolism underlies the dynamic interplay between oxidative stress and antioxidants in many pathophysiological processes. Read More

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June 2017
6 Reads

Alterations in vitamin A/retinoic acid homeostasis in diet-induced obesity and insulin resistance.

Authors:
Nimesh Mody

Proc Nutr Soc 2017 Nov 27;76(4):597-602. Epub 2017 Jun 27.

University of Aberdeen,Institute of Medical Sciences,School of Medicine,Medical Sciences and Nutrition,Foresterhill Health Campus,Aberdeen,Scotland AB25 2ZD,UK.

Vitamin A is an essential micronutrient for life and the phytochemical β-carotene, also known as pro-vitamin A, is an important dietary source of this vitamin. Vitamin A (retinol) is the parent compound of all bioactive retinoids but it is retinoic acid (RA) that is the active metabolite of vitamin A. The plasma concentration of retinol is maintained in a narrow range and its normal biological activities strictly regulated since excessive intake can lead to toxicity and thus also be detrimental to life. Read More

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November 2017
31 Reads

Effect of retinoid X receptor-α nuclear export inhibition on apoptosis of neurons in vivo and in vitro.

Mol Med Rep 2017 Aug 14;16(2):2037-2044. Epub 2017 Jun 14.

Department of Cell Biology and Genetics, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian 350108, P.R. China.

Alzheimer's disease (AD), which is characte-rized by excessive apoptosis of neurons, is considered to be a global public health crisis. Retinoid-induced apoptosis is dependent on the orphan nuclear receptor Nur77, a transcription factor that is expressed predominantly in brain tissues. Nur77 nuclear export requires retinoid X receptor‑α (RXRα) as a carrier. Read More

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August 2017
7 Reads

Retinoic acid in developmental toxicology: Teratogen, morphogen and biomarker.

Reprod Toxicol 2017 09 4;72:53-61. Epub 2017 Jun 4.

Center for Health Protection, National Institute for Public Health and the Environment RIVM, Antonie van Leeuwenhoeklaan 9, P.O. Box 1, 3720 BA Bilthoven, The Netherlands.

This review explores the usefulness retinoic acid (RA) related physiological factors as possible biomarkers of embryotoxicity. RA is involved in the morphogenesis of the early embryo as well as in the development and maturation of a wide variety of organ anlagen. The region-specific homeostasis of RA in the embryo is in many ways the driving force determining developmental cell proliferation versus differentiation. Read More

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September 2017
4 Reads

Retinoic acid prevents synaptic deficiencies induced by alcohol exposure during gastrulation in zebrafish embryos.

Neurotoxicology 2017 Sep 3;62:100-110. Epub 2017 Jun 3.

Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada; Department of Physiology, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada; Centre for Neuroscience, University of Alberta, Edmonton, Alberta, T6G 2E9 Canada. Electronic address:

In this study, we examined the effects of alcohol exposure during gastrulation on zebrafish embryos, specifically focusing on excitatory synaptic activity associated with neurons (Mauthner cells) that are born during gastrulation. Furthermore, we determined whether co-treatment of alcohol and retinoic acid (RA) could prevent the effects of alcohol exposure during gastrulation. We exposed zebrafish embryos to ethanol (150mM), RA (1nM), or a combination of RA (1nM) plus ethanol (150mM) for 5. Read More

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September 2017
4 Reads

Synthesis and evaluation of novel dual BRD4/HDAC inhibitors.

Bioorg Med Chem 2017 07 17;25(14):3677-3684. Epub 2017 May 17.

Institute of Molecular and Cellular, Biosciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan. Electronic address:

Epigenetic regulation of gene expression via histone acetylation modulates many cellular processes, including apoptosis, the cell cycle, cell growth and differentiation, and inhibitors are promising drug candidates. We have previously developed inhibitors of BRD4, which recognizes acetylated lysine residue on histones and recruits transcription elongation factor to the transcription start site, while inhibitors of histone deacetylase (HDAC), which catalyzes the removal of acetyl groups on histones, are already in clinical use for cancer treatment. Based on the idea that polypharmacological agents with multiple targets would have a more robust action, we set out to develop dual BRD4/HDAC inhibitors. Read More

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July 2017
7 Reads

Retinoic acid pre-treatment down regulates V. cholerae outer membrane vesicles induced acute inflammation and enhances mucosal immunity.

Vaccine 2017 06 22;35(28):3534-3547. Epub 2017 May 22.

Division of Bacteriology, National Institute of Cholera and Enteric Diseases, Kolkata, India. Electronic address:

Bacterial outer membrane vesicles have been extensively investigated and considered as a next generation vaccine. Recently, we have demonstrated that the cholera pentavalent outer membrane vesicles (CPMVs) immunogen induced adaptive immunity and had a strong protective efficacy against the circulating V. cholerae strains in a mouse model. Read More

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June 2017
5 Reads

Retinoid acid-induced microRNA-31-5p suppresses myogenic proliferation and differentiation by targeting CamkIIδ.

Skelet Muscle 2017 05 11;7(1). Epub 2017 May 11.

Department of Basic Oral Sciences, College of Stomatology, Dalian Medical University, Dalian, 116044 People's Republic of China.

Background: We previously reported that Wnt5a/CaMKIIδ (calcium/calmodulin-dependent protein kinase II delta) pathway was involved in the embryonic tongue deformity induced by excess retinoic acid (RA). Our latest study found that the expression of miR-31-5p, which was predicted to target the 3'UTR of CamkIIδ, was raised in the RA-treated embryonic tongue. Thus, we hypothesized that the excess RA regulated Wnt5a/CaMKIIδ pathway through miR-31-5p in embryonic tongue. Read More

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May 2017
7 Reads

RNA-sequencing and pathway analysis reveal alteration of hepatic steroid biosynthesis and retinol metabolism by tributyltin exposure in male rare minnow (Gobiocypris rarus).

Aquat Toxicol 2017 Jul 8;188:109-118. Epub 2017 Apr 8.

Henan Open Laboratory of Key Subjects of Environmental and Animal Products Safety, College of Animal Science and Technology, Henan University of Science and Technology, Henan, China.

Tributyltin (TBT) is widely spread in aquatic ecosystems. Although adverse effects of TBT on reproduction and lipogenesis are observed in fishes, the underlying mechanisms, especially in livers, are still scarce and inconclusive. Thus, RNA-sequencing runs were performed on the hepatic libraries of adult male rare minnow (Gobiocypris rarus) after TBT exposure for 60d. Read More

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July 2017
4 Reads

A Protocol for In Vitro High-Throughput Chemical Susceptibility Screening in Differentiating NT2 Stem Cells.

Methods Mol Biol 2017 ;1601:61-70

Friedrich-Alexander University (FAU) Erlangen-Nürnberg, Institute of Medical Biotechnology, Paul-Gordan-Street 3, 91052, Erlangen, Germany.

The incidence of neurological diseases including learning and developmental disorders has increased in recent years. Concurrently, the number and volume of worldwide registered and traded chemicals have also increased. There is a broad consensus that the developing brain is particularly sensitive to damage by chemicals and that evaluation of chemicals for developmental toxicity or neurotoxicity is critical to human health. Read More

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February 2018

All-Trans Retinoic Acid Ameliorates Arsenic-Induced Oxidative Stress and Apoptosis in the Rat Uterus by Modulating MAPK Signaling Proteins.

J Cell Biochem 2017 11 30;118(11):3796-3809. Epub 2017 May 30.

Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700 019, India.

Exposure to arsenic leads to inhibition of the anti-oxidant defense mechanism of the body. Reactive oxygen species generated in response to arsenic causes reproductive failures in exposed females and also acts as an inducer of apoptosis. As a prospective remedial agent, all-trans retinoic acid (ATRA) was assessed for reversing arsenic-induced oxidative stress and apoptosis. Read More

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November 2017
1 Read

Ameliorated Effects of (-)-Epigallocatechin Gallate Against Toxicity Induced by Vanadium in the Kidneys of Wistar Rats.

Biol Trace Elem Res 2017 Dec 29;180(2):239-245. Epub 2017 Mar 29.

Laboratory of Animal Ecophysiology, Department of Life Science, Faculty of Science, University of Sfax, PB 802, 3018, Sfax, Tunisia.

The aim of the study was to assess the protective effect of (-)-epigallocatechin gallate (EGCG), a flavonoid abundant in green tea, against ammonium metavanadate (AMV)-induced oxidative stress in male Wistar rats. Four groups of animals have been used, a control group and three test groups. In the first test group, AMV was intra-peritoneally (i. Read More

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December 2017

Inhibition of gap junction intercellular communication is involved in silica nanoparticles-induced H9c2 cardiomyocytes apoptosis via the mitochondrial pathway.

Int J Nanomedicine 2017 20;12:2179-2188. Epub 2017 Mar 20.

Department of Toxicology, Shandong Academy of Occupational Health and Occupational Medicine, Shandong Academy of Medical Sciences.

Gap junction intercellular communication (GJIC) between cardiomyocytes is essential for synchronous heart contraction and relies on connexin-containing channels. Connexin 43 (Cx43) is a major component involved in GJIC in heart tissue, and its abnormal expression is closely associated with various cardiac diseases. Silica nanoparticles (SNPs) are known to induce cardiovascular toxicity. Read More

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May 2017
7 Reads

Lower concentrations of receptor for advanced glycation end products and epiregulin in amniotic fluid correlate to chemically induced cleft palate in mice.

Environ Toxicol Pharmacol 2017 Apr 28;51:45-50. Epub 2017 Feb 28.

The State Key Laboratory Breeding Base of Basic Science of Stomatology & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China. Electronic address:

This study investigated the correlation between differentially expressed proteins in amniotic fluid (AF) and cleft palate induced by all-trans retinoic acid (atRA), and 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in mice. Seven proteins were differentially expressed at embryonic day (E) 16.5 in atRA and control groups as revealed by label-based mouse antibody array. Read More

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April 2017
3 Reads

Serum Folate, Vitamin B-12, Vitamin A, γ-Tocopherol, α-Tocopherol, and Carotenoids Do Not Modify Associations between Cadmium Exposure and Leukocyte Telomere Length in the General US Adult Population.

J Nutr 2017 04 8;147(4):538-548. Epub 2017 Mar 8.

Department of Environmental and Occupational Health, Milken Institute School of Public Health, George Washington University, Washington, DC.

Leukocyte telomere length (LTL) is a biomarker of the aging process and is associated with the risk of chronic disease. Higher exposure to cadmium may be associated with shorter LTL, and adequate nutrient concentrations may be associated with longer LTL; however, the potential interaction between metals and nutrients on LTL has yet to be examined. The objective of this study was to evaluate whether serum concentrations of vitamins and carotenoids were associated with LTL, and whether they modified the association between blood cadmium and LTL in the US NHANES (1999-2002). Read More

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April 2017
1 Read

Phytochemical Ginkgolide B Attenuates Amyloid-β1-42 Induced Oxidative Damage and Altered Cellular Responses in Human Neuroblastoma SH-SY5Y Cells.

J Alzheimers Dis 2017 ;60(s1):S25-S40

Centre for Animal Sciences, School of Basic and Applied Sciences, Central University of Punjab, Bathinda, Punjab, India.

Oxidative stress is an upsurge in reactive oxygen/nitrogen species (ROS/RNS), which aggravates damage to cellular components viz. lipids, proteins, and nucleic acids resulting in impaired cellular functions and neurological pathologies including Alzheimer's disease (AD). In the present study, we have examined amyloid-β (Aβ)-induced oxidative stress responses, a major cause for AD, in the undifferentiated and differentiated human neuroblastoma SH-SY5Y cells. Read More

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Long-term behavioral change as a result of acute ethanol exposure in zebrafish: Evidence for a role for sonic hedgehog but not retinoic acid signaling.

Neurotoxicol Teratol 2017 05 20;61:66-73. Epub 2017 Feb 20.

Julius L. Chambers Biomedical/Biotechnology Research Institute, United States; Department of Biological and Biomedical Sciences, United States. Electronic address:

Background: Developmental exposure to ethanol is recognized to produce long-term neurobehavioral impairment in multiple animal models. However, the molecular mechanisms underlying these deficits remain poorly understood. The present study was undertaken to ascertain whether two well-characterized targets of prenatal alcohol exposure, sonic hedgehog (Shh) and retinoic acid (RA), that induce the hallmark morphological phenotypes of fetal alcohol spectrum disorders (FASD), are involved in the generation of behavioral alterations as a result of alcohol exposure. Read More

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May 2017
1 Read

Cytogenotoxicological defense of retinyl palmitate in the front damage of antineoplastics.

Exp Toxicol Pathol 2017 Jun 16;69(5):293-297. Epub 2017 Feb 16.

Laboratory of Toxicology and Genetics, Federal University of Piauí, Teresina, Piaui, 64.049-550, Brazil; Postgraduate Program in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil; Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Piauí, 64.049-550, Brazil.

Cancer, the multifactorial pathology and to date is the most lethal causes of death in the world. Cyclophosphamide (CPA) and doxorubicin (DOX) are the individually or combindly used two anticancer drugs. The antineoplastic drugs-mediated genetic instability can be overcome by using antioxidants. Read More

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June 2017
14 Reads

Inorganic mercury prevents the differentiation of SH-SY5Y cells: Amyloid precursor protein, microtubule associated proteins and ROS as potential targets.

J Trace Elem Med Biol 2017 May 6;41:119-128. Epub 2017 Feb 6.

Departmento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Mexico City, 07360, Mexico. Electronic address:

Exposure to mercury (Hg) occurs through different pathways and forms including methylmecury (MeHg) from seafood and rice, ethylmercury (EtHg), and elemental Hg (Hg) from dental amalgams and artisanal gold mining. Once in the brain all these forms are transformed to inorganic Hg (I-Hg), where it bioaccumulates and remains for long periods. Hg is a well-known neurotoxicant, with its most damaging effects reported during brain development, when cellular key events, such as cell differentiation take place. Read More

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May 2017
6 Reads

Carotenoid glycosides from cyanobacteria are teratogenic in the zebrafish (Danio rerio) embryo model.

Chemosphere 2017 May 31;174:478-489. Epub 2017 Jan 31.

Department of Chemistry and Biochemistry, Marine Science Program, Florida International University, 3000 NE 151st Street, North Miami, FL 33181, USA. Electronic address:

Toxigenicity of cyanobacteria is widely associated with production of several well-described toxins that pose recognized threats to human and ecosystem health as part of both freshwater eutrophication, and episodic blooms in freshwater and coastal habitats. However, a preponderance of evidence indicates contribution of additional bioactive, and potentially toxic, metabolites. In the present study, the zebrafish (Danio rerio) embryo was used as a model of vertebrate development to identify, and subsequently isolate and characterize, teratogenic metabolites from two representative strains of C. Read More

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May 2017
6 Reads

β-N-Methylamino-L-alanine (BMAA) perturbs alanine, aspartate and glutamate metabolism pathways in human neuroblastoma cells as determined by metabolic profiling.

Amino Acids 2017 05 4;49(5):905-919. Epub 2017 Feb 4.

Department of Pharmaceutical Biosciences, Uppsala University, Box 591, 751 23, Uppsala, Sweden.

β-Methylamino-L-alanine (BMAA) is a non-proteinogenic amino acid that induces long-term cognitive deficits, as well as an increased neurodegeneration and intracellular fibril formation in the hippocampus of adult rodents following short-time neonatal exposure and in vervet monkey brain following long-term exposure. It has also been proposed to be involved in the etiology of neurodegenerative disease in humans. The aim of this study was to identify metabolic effects not related to excitotoxicity or oxidative stress in human neuroblastoma SH-SY5Y cells. Read More

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May 2017
1 Read

Hepatic Detoxification of Bisphenol A is Retinoid-Dependent.

Toxicol Sci 2017 05;157(1):141-155

Department of Medicine, Columbia University, New York, NY, USA.

Bisphenol A (BPA, 2,2-bis(4-hydroxyphenyl) propane) is a widely used industrial chemical. The extensive distribution of BPA in the environment poses risks to humans. However, the molecular mechanisms underlying BPA toxicity as well as its effective detoxification and elimination are not well understood. Read More

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May 2017
2 Reads

[Very Severe Differentiation Syndrome in Low Risk Acute Promyelocytic Leukemia - A Peril of Differentiating Therapy].

Dtsch Med Wochenschr 2017 Jan 23;142(2):111-114. Epub 2017 Jan 23.

Universitätsmedizin Mannheim, III. Medizinische Klinik, Hämatologie und internistische Onkologie, Mannheim.

 A young patient consulted the hospital because of spontaneous hematomas. The combination of pancytopenia and coagulopathy in the blood and the proving cytogenetic and moleculargenetic examinations of the bone marrow lead to the diagnosis of low-risk acute promyelocytic leukemia (APL).  During the combination therapy with ATRA and ATO, the patient developed a severe differentiation syndrome and hyperleukocytosis. Read More

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January 2017
3 Reads

Phasing out of the Universal Mega Dose of Vitamin-A Prophylaxis to Avoid Toxicity.

AIMS Public Health 2017 20;4(1):38-46. Epub 2017 Jan 20.

Department of Community Medicine, School of Public Health, PGIMER, Chandigarh, India.

Childhood blindness due to corneal ulceration was prevalent among poor Indian children. To tackle this situation, the National Institute of Nutrition (NIN), Hyderabad, India, Vitamin-A (Vit-A) prophylaxis programme was launched nationally in 1970 after field testing. Research of Indian Council for Medical Research (ICMR) documented that prevalence of Vit-A deficiency signs such as Bitot's spot decreased among children, over a period of time. Read More

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January 2017

Excess Retinoic Acid Induces Fusion of Centra by Degenerating Intervertebral Ligament Cells in Japanese flounder, Paralichthys olivaceus.

J Exp Zool B Mol Dev Evol 2016 Dec 18;326(8):464-473. Epub 2017 Jan 18.

Laboratory of Marine Life Science and Genetics, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.

In marine aquaculture fish, excessive supplement of vitamin A (VA) to zooplanktons for larval culture and experimental exposure of larvae to retinoic acid (RA: active form of VA) have been known to cause vertebral deformity. However, the tissues in the developing vertebral column that are affected by RA and the progression of vertebral deformity remain undetermined. To examine these questions, we histologically traced the progress of vertebral deformity induced by RA in Japanese flounder (Paralichthys olivaceus). Read More

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December 2016
2 Reads

Congenital insensitivity to pain with anhidrosis in Sudanese children.

Sudan J Paediatr 2016 ;16(2):80-85

Sea Ports Corporation Hospital and Red Sea University , Port Sudan , Sudan.

Congenital insensitivity to pain with anhidrosis (CIPA), also called hereditary sensory and autonomic neuropathy type IV (HSAN-IV), is an extremely rare autosomal recessive disease. It is characterized by insensitivity to pain, inability to sweat, episodes of hyperpyrexia, and intellectual disability. These factors render the affected persons to repeatedly injure and traumatise themselves to the degree that they become disabled. Read More

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January 2016
4 Reads