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Glucose toxicity

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https://www.readbyqxmd.com/read/29156308/modulatory-effects-of-green-tea-extract-against-the-hepatotoxic-effects-of-4-nonylphenol-in-catfish-clarias-gariepinus
#1
A H Sayed, Hamdy A M Soliman
The antioxidant role of the green tea (Camellia sinensis) extract (GTE) was examined to remedy the toxic effects of (0.2mgl(-1)) 4-nonylphenol(4-NP). Biochemical parameters, antioxidant enzymes, liver lipid peroxidation (LPO), DNA fragmentation, and apoptosis as well as histopathology of liver of African catfish Clarias gariepinus were considered. Catfishes were divided into four groups: first group (control), second group (0.2mgl(-1) of 4-NP), third group (0.2mgl(-1)of 4-NP +100mg GTE l(-1)water), and fourth group (0...
November 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29155496/insulin-resistance-in-chronic-kidney-disease
#2
REVIEW
Hong Xu, Juan J Carrero
This review provides an overview of insulin resistance (IR) in patients with chronic kidney disease (CKD). IR is a pathological state in which target tissues fail to respond normally to insulin. IR is understood as a consequence of CKD and its prevalence rises particularly in advanced CKD stages. Mechanisms leading to IR are complex and multifactorial, involving post-receptor signaling defects, unhealthy lifestyles, metabolic acidosis, inflammation, oxidative stress, vitamin D deficiency, anemia, and uremic toxicity, as shown by human and experimental studies over the last 30 years...
December 2017: Nephrology
https://www.readbyqxmd.com/read/29152592/revisiting-the-igf-1r-as-a-breast-cancer-target
#3
Roudy Chiminch Ekyalongo, Douglas Yee
The type I insulin-like growth factor-1 receptor is a well-described target in breast cancer and multiple clinical trials examining insulin-like growth factor-1 receptor have been completed. Unfortunately, monoclonal antibodies and tyrosine kinase inhibitors targeting insulin-like growth factor-1 receptor failed in phase III breast clinical trials for several reasons. First, insulin-like growth factor-1 receptor antibody therapy resulted in hyperglycemia and metabolic syndrome most likely due to disruption of insulin-like growth factor-1 homeostasis and subsequent growth hormone elevation...
2017: NPJ Precis Oncol
https://www.readbyqxmd.com/read/29152460/bisphenol-s-impairs-blood-functions-and-induces-cardiovascular-risks-in-rats
#4
Sanghamitra Pal, Kaushik Sarkar, Partha Pratim Nath, Mukti Mondal, Ashma Khatun, Goutam Paul
Bisphenol S (BPS) is an industrial chemical which is recently used to replace the potentially toxic Bisphenol A (BPA) in making polycarbonate plastics, epoxy resins and thermal receipt papers. The probable toxic effects of BPS on the functions of haemopoietic and cardiovascular systems have not been reported till to date. We report here that BPS depresses haematological functions and induces cardiovascular risks in rat. Adult male albino rats of Sprague-Dawley strain were given BPS at a dose level of 30, 60 and 120 mg/kg BW/day respectively for 30 days...
2017: Toxicology Reports
https://www.readbyqxmd.com/read/29145851/ala-la-ameliorates-glucose-toxicity-on-hk-2-cells-by-attenuating-oxidative-stress-and-apoptosis-through-the-ros-p38-tgf-%C3%AE-1-pathway
#5
Mingxia Jiang, Haifen Zhang, Lijie Zhai, Bianliang Ye, Yin Cheng, Chengkai Zhai
BACKGROUND: Growing evidence indicates that oxidative stress (OS) plays a pivotal role in Diabetic nephropathy (DN). In a previous study we demonstrated that ALA/LA protected HK-2 cells against high glucose-induced cytotoxicity. So we aimed to establish the glucose injury model of HK-2 cells and investigate the beneficial effects of ALA/LA on high glucose-induced excessive production of TGF-β1 and the possible mechanisms mediating the effects. METHODS: The expression of OS markers in high glucose-induced HK-2 cells treated with ALA/LA...
November 16, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/29145032/intravenous-immunoglobulin-improves-glucose-control-and-%C3%AE-cell-function-in-human-iapp-transgenic-mice-by-attenuating-islet-inflammation-and-reducing-iapp-oligomers
#6
Yue Zhang, Xiao-Lin Yu, Jie Zhu, Shu-Ying Liu, Xiang-Meng Liu, Quan-Xiu Dong, Jia-Qian Chai, Rui-Tian Liu
Type 2 diabetes mellitus (T2DM) is a metabolic disorder characterized by β-cell loss, insulin resistance, islet inflammation and amyloid deposits derived from islet amyloid polypeptide (IAPP). Reducing toxic IAPP oligomers and inhibiting islet inflammation may provide therapeutic benefit in treating T2DM. Intravenous immunoglobulin (IVIg) is an efficient anti-inflammatory and immunomodulatory agent for the treatment of several autoimmune or inflammatory neurological diseases. However, whether IVIg has therapeutic potential on T2DM remains unclear...
November 13, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29143967/thirteen-week-toxicity-study-of-dietary-l-tryptophan-in-rats-with-a-recovery-period-of-5%C3%A2-weeks
#7
Yusuke Shibui, Hideki Matsumoto, Yoko Masuzawa, Takumi Ohishi, Tsutomu Fukuwatari, Katsumi Shibata, Ryosei Sakai
Although l-tryptophan is nutritionally important and widely used in medical applications, toxicity data for its oral administration are limited. The purpose of this study was to evaluate the potential toxicity of an experimental diet containing added l-tryptophan at doses of 0 (basal diet), 1.25%, 2.5% and 5.0% when administered to Sprague-Dawley rats for 13 weeks. There were no toxicological changes in clinical signs, ophthalmology, urinalysis, hematology, necropsy, organ weight and histopathology between control rats and those fed additional l-tryptophan...
November 16, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/29138968/mitochondrial-dysfunctions-contribute-to-energy-deficits-in-rodent-model-of-hepatic-encephalopathy
#8
Saurabh Dhanda, Aditya Sunkaria, Avishek Halder, Rajat Sandhir
Perturbations in the cerebral energy metabolism are anticipated to be an important factor by which ammonia may exert its toxic effects on the central nervous system. The present study was designed to investigate the role of impaired mitochondrial functions and cerebral energy metabolism in the development hepatic encephalopathy (HE) induced by of bile duct ligation (BDL). After four weeks of BDL, a significant increase in hepatic hydroxyproline and collagen content was observed which confirmed biliary fibrosis...
November 14, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29136753/-metabolomics-study-of-tris-2-chloroethyl-phosphate-induced-hepaotoxicity-and-nephrotoxicity-in-sprague-dawley-rats
#9
W Q Yang, F Zhao, L Li, Y J Fang
Objective: To discuss the potential toxic target organ and the toxic effects and mechanisms of tris (2-chloroethyl) phosphate (TCEP) on SD rats. Methods: 40 female SD rats weaning from milk for 21 days, weighted (50±2.3)g were selected as subjects and marked by the weight. They were randomly divided into 4 groups, namely control group, 50 (L), 100 (M) and 250 (H) mg·kg(-1)·d(-1) dose of TCEP group. Each group has 10 rats, and administrated the corresponding dose of drug or vehicle by mouth, quaque die for 60 days...
November 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29130566/cisplatin-conjugated-gold-nanoparticles-as-a-theranostic-agent-for-head-and-neck-cancer
#10
Erez Shmuel Davidi, Tamar Dreifuss, Menachem Motiei, Eliezer Shai, Dimitri Bragilovski, Leon Lubimov, Marc Jose Jonathan Kindler, Aron Popovtzer, Jeremy Don, Rachela Popovtzer
BACKGROUND: The purpose of this study was to develop a nanoplatform, which simultaneously acts as radiosensitizer, drug carrier, and tumor imaging agent for head and neck cancer. METHODS: We synthesized 20 nm gold nanoparticles, coated with glucose and cisplatin (CG-GNPs). Their penetration into tumor cells and their cellular toxicity were evaluated in vitro. In vivo experiments were conducted to evaluate their impact on tumor growth and their imaging capabilities...
November 11, 2017: Head & Neck
https://www.readbyqxmd.com/read/29128638/ulk1-regulated-autophagy-a-mechanism-in-cellular-protection-for-aldh2-against-hyperglycemia
#11
Min Liu, Songhe Lu, Wei He, Le Zhang, Ying Ma, Ping Lv, Meijuan Ma, Wenjun Yu, Jiaxing Wang, Mingming Zhang, Yingmei Zhang, Yan Li
Mitochondrial aldehyde dehydrogenase 2 (ALDH2), an important enzyme in the elimination of toxic aldehydes, is involved in cardioprotection against diabetes mellitus. This study was designed to examine the mechanism behind ALDH2-offered protection against high glucose exposure with a focus on autophagy. H9C2 cells were cultured with normal or high glucose medium in the presence or absence of the ALDH2 agonist Alda-1. GFP-LC3 puncta and immunofluorescence were employed to assess autophagosome formation. Western blotting was applied to evaluate autophagy protein markers Atg5, LC3, p62, ULK1 phosphorylation and ALDH2...
November 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/29127768/diabetic-ketoacidosis-hyperuricemia-and-encephalopathy-intractable-to-regular-dose-insulin
#12
Jillian Gregory, Sonali Basu
BACKGROUND: Diabetic ketoacidosis (DKA) in children less than 1 year of age is a rare occurrence. Typical presentation includes a prodrome of weight loss and polyuria with subsequent presentation to medical care when acidosis becomes symptomatic. CASE PRESENTATION: We describe an unusual case of a previously healthy infant with a 3 days' history of constipation, presenting acutely with abdominal pain, lethargy, and dehydration. On initial evaluation, our patient had profound encephalopathy, with marked tachypnea and work of breathing...
November 11, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/29127035/the-high-production-volume-fungicide-pyraclostrobin-induces-triglyceride-accumulation-associated-with-mitochondrial-dysfunction-and-promotes-adipocyte-differentiation-independent-of-ppar%C3%AE-activation-in-3t3-l1-cells
#13
Anthony L Luz, Christopher D Kassotis, Heather M Stapleton, Joel N Meyer
Pyraclostrobin is one of the most heavily used fungicides, and has been detected on a variety of produce, suggesting human exposure occurs regularly. Recently, pyraclostrobin exposure has been linked to a variety of toxic effects, including neurodegeneration and triglyceride (TG) accumulation. As pyraclostrobin inhibits electron transport chain complex III, and as mitochondrial dysfunction is associated with metabolic syndrome (cardiovascular disease, type II diabetes, obesity), we designed experiments to test the hypothesis that mitochondrial dysfunction underlies its adipogenic activity...
November 7, 2017: Toxicology
https://www.readbyqxmd.com/read/29119175/protective-effect-of-selenium-supplementation-following-oxidative-stress-mediated-by-glucose-on-retinal-pigment-epithelium
#14
Raquel González de Vega, Montserrat García, María Luisa Fernández-Sánchez, Héctor González-Iglesias, Alfredo Sanz-Medel
There are many conditions that affect the retina. However, diabetic retinopathy (RD) as a complication of Diabetes Mellitus continues to be the leading cause of blindness in working people globally. Diabetic retinopathy is an ocular complication of diabetes that is caused by the deterioration of the blood vessels that supply the retina, which has the consequence that the vision deteriorates irreversibly. The retina, and specifically the retinal pigment epithelium (RPE) is the only neural tissue that is exposed directly and frequently to light, which favors the oxidation of lipids that become extremely toxic to the cells of the retina...
November 9, 2017: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29113329/the-clock-gene-brain-and-muscle-arnt-like-1-regulates-autophagy-in-high-glucose-induced-cardiomyocyte-injury
#15
Li Qiao, Bingyan Guo, Hui Zhang, Rong Yang, Liang Chang, Yaling Wang, Xin Jin, Suyun Liu, Yongjun Li
High-glucose-induced cardiomyocyte injury is the major cause of diabetic cardiomyopathy, but its regulatory mechanisms are not fully understood. Here, we report that a circadian clock gene, brain and muscle Arnt-like 1 (Bmal1), increases autophagy in high-glucose-induced cardiomyocyte injury. We constructed a hyperglycemia model with cultured cardiomyocytes from neonatal rats. High-glucose-induced inhibition of autophagy and cardiomyocyte injury were attenuated by Bmal1 overexpression and aggravated by its knockdown...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29109421/high-level-heterologous-production-and-functional-secretion-by-recombinant-pichia-pastoris-of-the-shortest-proline-rich-antibacterial-honeybee-peptide-apidaecin
#16
Ximing Chen, Juan Li, Haili Sun, Shiweng Li, Tuo Chen, Guangxiu Liu, Paul Dyson
Drug resistance is a major problem in antibacterial chemotherapy. Apidaecins, which refer to a series of small, proline-rich antimicrobial peptides, are predominantly active against many drug-resistant bacteria. The apidaecins have special antibacterial mechanisms, and are non-toxic for human cells, a prerequisite for using them as novel antibiotic drugs. However, no efficient non-tagged apidaecin expression system has been reported, which is the limiting factor for their application. Here we successfully generated a Pichia pastoris transformant expressing and secreting apidaecin...
November 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29109021/renal-organic-anion-transporters-in-drug-drug-interactions-and-diseases
#17
REVIEW
Xiaokui Huo, Kexin Liu
The kidney plays a vital role in maintaining systemic homeostasis. Active tubular secretion and reabsorption, which are mainly mediated by transporters, is an efficient mechanism for retaining glucose, amino acids, and other nutrients and for the clearance of endogenous waste products and xenobiotics. These substances are recognized by uptake transporters located in the basolateral and apical membranes of renal proximal tubule cells and are extracted from plasma and urine. Organic anion transporters (OATs) belong to the solute carrier (SLC) 22 superfamily and facilitate organic anions across the plasma membranes of renal proximal tubule cells...
November 8, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29107617/assessment-of-preclinical-pharmacokinetics-and-acute-toxicity-of-pioglitazone-and-telmisartan-combination
#18
Pinaki Sengupta, Bappaditya Chatterjee, Tapan Kumar Pal
The prevalence of hypertension is very common amongst the diabetic patients and is reported as the major cause of mortality in diabetes. Pioglitazone reported to have an ability to alter the blood cholesterol level and cardioprotective efficiency along with its antidiabetic activity. Telmisartan, through activation of PPAR-γ receptor exerts insulin sensitizing property in addition to its primary cardioprotective efficiency. Theoretically, a combination of pioglitazone and telmisartan may be beneficial to effectively control the high blood glucose level and management of coexisting cardiovascular complication in diabetes...
October 28, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29107216/pharmacological-effects-and-potential-therapeutic-targets-of-dt-13
#19
REVIEW
Ghulam Jilany Khan, Mohsin Rizwan, Muhammad Abbas, Muhammad Naveed, Yu Boyang, Muhammad Ahsan Naeem, Sara Khan, Shengtao Yuan, Mirza Muhammad Faran Ashraf Baig, Li Sun
DT-13 is an isolated compound from Dwarf lillytruf tuber and currently among active research drugs by National Natural Science foundation of China for its several potential effects. The drug has been reported for its multiple pharmacological actions however no thorough review studies are available on it. Our present study is highlighting the pros and cons of DT-13 focusing on its potential pharmacological actions, therapeutic utilization and further exploration for novel targets. The drug possesses very low toxicity profile, quick onset and long duration of action with slow elimination that combinely makes it favorable for the clinical studies...
October 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29106690/metabolic-syndrome-and-associated-diseases-from-the-bench-to-the-clinic
#20
Donna L Mendrick, Anna Mae Diehl, Lisa S Topor, Rodney R Dietert, Yvonne Will, Michele A La Merrill, Sebastien Bouret, Vijayalaskshmi Varma, Kenneth L Hastings, Thaddeus T Schug, Susan G Emeigh Hart, Florence G Burleson
Metabolic Syndrome and Associated Diseases: From the Bench to the Clinic, a Society of Toxicology Contemporary Concepts in Toxicology (CCT) workshop was held on March 11, 2017. The meeting was convened to raise awareness of metabolic syndrome and its associated diseases and serve as a melting pot with scientists of multiple disciplines (e.g., toxicologists, clinicians, regulators) so as to spur research and understanding of this condition. The criteria for metabolic syndrome include obesity, dyslipidemia (low HDL and/or elevated triglycerides), elevated blood pressure, and alterations in glucose metabolism...
November 2, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
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