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Stress induced hyperglycemia

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https://www.readbyqxmd.com/read/28922713/peppermint-essential-oil-alleviates-hyperglycemia-caused-by-streptozotocin-nicotinamide-induced-type-2-diabetes-in-rats
#1
Suhair A Abdellatief, Rasha R Beheiry, Shefaa A M El-Mandrawy
The prevalence of diabetes mellitus is steadily growing throughout the world. Traditional medicine has an excellent potential in the treatment of diabetes mellitus. The present study was undertaken to evaluate the potential antidiabetic effect of peppermint essential oil (PEO) on streptozotocin (STZ) and nicotinamide induced diabetic rats. Diabetes was induced in rats fasting overnight by the intraperitoneal administration of nicotinamide followed by a single dose of STZ. After 72h, two groups of diabetic rats were treated with different doses of PEO (40 and 80mg/kg BW) respectively and one group was treated with the standard hypoglycemic agent glibenclamide...
September 12, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28914755/thioredoxin-2-offers-protection-against-mitochondrial-oxidative-stress-in-h9c2-cells-and-against-myocardial-hypertrophy-induced-by-hyperglycemia
#2
Hong Li, Changqing Xu, Quanfeng Li, Xiuxiang Gao, Erkio Sugano, Hiroshi Tomita, Liming Yang, Sa Shi
Mitochondrial oxidative stress is thought to be a key contributor towards the development of diabetic cardiomyopathy. Thioredoxin 2 (Trx2) is a mitochondrial antioxidant that, along with Trx reductase 2 (TrxR2) and peroxiredoxin 3 (Prx3), scavenges H₂O₂ and offers protection against oxidative stress. Our previous study showed that TrxR inhibitors resulted in Trx2 oxidation and increased ROS emission from mitochondria. In the present study, we observed that TrxR inhibition also impaired the contractile function of isolated heart...
September 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28912645/anti-inflammatory-effect-of-glucagon-like-peptide-1-receptor-agonist-exendin-4-through-modulation-of-ib1-jip1-expression-and-jnk-signaling-in-stroke
#3
Soojin Kim, Jaewon Jeong, Hye-Seon Jung, Bokyung Kim, Ye-Eun Kim, Da-Sol Lim, So-Dam Kim, Yun Seon Song
Glucagon like peptide-1 (GLP-1) stimulates glucose-dependent insulin secretion. Dipeptidyl peptidase-4 (DPP-4) inhibitors, which block inactivation of GLP-1, are currently in clinical use for type 2 diabetes mellitus. Recently, GLP-1 has also been reported to have neuroprotective effects in cases of cerebral ischemia. We therefore investigated the neuroprotective effects of GLP-1 receptor (GLP-1R) agonist, exendin-4 (ex-4), after cerebral ischemia-reperfusion injury. Transient middle cerebral artery occlusion (tMCAO) was induced in rats by intracerebroventricular (i...
August 2017: Experimental Neurobiology
https://www.readbyqxmd.com/read/28911973/novel-oxolane-derivative-dmtd-mitigates-high-glucose-induced-erythrocytes-apoptosis-by-regulating-oxidative-stress
#4
Swamy Jagadish, Mahadevappa Hemshekhar, Somanathapura K NaveenKumar, Kothanahally S Sharath Kumar, Mahalingam S Sundaram, Basappa, Kesturu S Girish, Kanchugarakoppal S Rangappa
Chronic hyperglycemia is one of the characteristic conditions associated with Diabetes Mellitus (DM), which often exerts deleterious effects on erythrocyte morphology and hemodynamic properties leading to anemia and diabetes-associated vascular complications. High glucose-induced over production of reactive oxygen species (ROS) can alter the blood cell metabolism and biochemical functions subsequently causing eryptosis (red blood cell death), yet another complication of concern in DM. Therefore, blocking high glucose-induced oxidative damage and subsequent eryptosis is of high importance in the better management of DM and associated vascular complications...
September 11, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28911678/averrhoa-bilimbi-fruits-attenuate-hyperglycemia-mediated-oxidative-stress-in-streptozotocin-induced-diabetic-rats
#5
Surya B Kurup, S Mini
Hyperglycemia-mediated oxidative stress plays a major role in the development of diabetic complications. Averrhoa bilimbi Linn. (Oxalidaceae) is a medicinal plant with fruits reported to possess antidiabetic activity. This study evaluated the beneficial effects of the ethyl acetate fraction of A. bilimbi fruit (ABAEE) on the antioxidant/oxidant status in diabetes mellitus. Diabetic rats were treated orally with the ethyl acetate fraction of A. bilimbi fruits at a dose of 25 mg/kg body weight for 60 days. Serum glucose, glycated hemoglobin, plasma insulin, hepatic toxicity markers, antioxidant enzymes, lipid peroxidation products, and liver histopathology were assayed checked after 60 days of extract treatment...
April 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28911649/long-chain-bases-from-sea-cucumber-mitigate-endoplasmic-reticulum-stress-and-inflammation-in-obesity-mice
#6
Shiwei Hu, Jinhui Wang, Jingfeng Wang, Changhu Xue, Yuming Wang
Endoplasmic reticulum (ER) stress and inflammation can induce hyperglycemia. Long-chain bases (LCBs) from sea cucumber exhibit antihyperglycemic activities. However, their effects on ER stress and inflammation are unknown. We investigated the effects of LCBs on ER stress and inflammatory response in high-fat, fructose diet-induced obesity mice. Reactive oxygen species and free fatty acids were measured. Inflammatory cytokines in serum and their mRNA expressions in epididymal adipose tissues were investigated...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28911613/proteomic-changes-associated-with-metabolic-syndrome-in-a-fructose-fed-rat-model
#7
Cheng-Chu Hsieh, Chen-Chung Liao, Yi-Chun Liao, Lucy Sun Hwang, Liang-Yi Wu, Shu-Chen Hsieh
Metabolic syndrome (MetS), characterized by a constellation of disorders such as hyperglycemia, insulin resistance, and hypertension, is becoming a major global public health problem. Fructose consumption has increased dramatically over the past several decades and with it the incidence of MetS. However, its molecular mechanisms remain to be explored. In this study, we used male Sprague-Dawley (SD) rats to study the pathological mechanism of fructose induced MetS. The SD rats were fed a 60% high-fructose diet for 16 weeks to induce MetS...
October 2016: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28910603/apolipoprotein-a-iv-constrains-hpa-and-behavioral-stress-responsivity-in-a-strain-dependent-manner
#8
Amy E B Packard, Jintao Zhang, Brent Myers, Chih-Wei Ko, Fei Wang, Patrick Tso, Yvonne M Ulrich-Lai
There is a critical gap in our knowledge of the mechanisms that govern interactions between daily life experiences (e.g., stress) and metabolic diseases, despite evidence that stress can have profound effects on cardiometabolic health. Apolipoprotein A-IV (apoA-IV) is a protein found in chylomicrons (lipoprotein particles that transport lipids throughout the body) where it participates in lipid handling and the regulation of peripheral metabolism. Moreover, apoA-IV is expressed in brain regions that regulate energy balance including the arcuate nucleus...
September 1, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28904557/ginger-ingredients-alleviate-diabetic-prostatic-complications-effect-on-oxidative-stress-and-fibrosis
#9
Basma G Eid, Hala Mosli, Atif Hasan, Hany M El-Bassossy
Prostatic complications are common in patients with diabetes. This study investigated the effect of different ginger ingredients: zingerone, geraniol, and 6-gingerol on the prostate in diabetic rats. Diabetes was induced in Wistar rats by streptozotocin intraperitoneal injection (50 mg/kg), and the rats were left for 10 weeks to develop prostatic complications. In diabetic treated groups, rats received daily oral zingerone, geraniol, and 6-gingerol in doses of 20, 200, and 75 mg/kg, respectively, in the last 8 weeks...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28893413/fish-oil-emulsion-supplementation-might-improve-quality-of-life-of-diabetic-patients-due-to-its-antioxidant-and-anti-inflammatory-properties
#10
Lucia Laubertová, Katarína Koňariková, Helena Gbelcová, Zdeňka Ďuračková, Jana Muchová, Iveta Garaiova, Ingrid Žitňanová
Diabetes-related complications, including cardiovascular disease, retinopathy, nephropathy, and neuropathy, are a significant cause of increased morbidity and mortality among people with diabetes. Previous studies have confirmed that hyperglycemia has pro-oxidative and proinflammatory properties which cause diabetic complications. We hypothesized that supplementation of fish oil emulsion (FOE), rich in omega-3 polyunsaturated fatty acids, to diabetic patients might reduce hyperglycemia-induced pathological changes due to specific properties of FOE...
August 3, 2017: Nutrition Research
https://www.readbyqxmd.com/read/28882793/regulation-mechanism-of-oxidative-stress-induced-by-high-glucose-through-pi3k-akt-nrf2-pathway-in-juvenile-blunt-snout-bream-megalobrama-amblycephala
#11
Wenjing Pan, Linghong Miao, Yan Lin, Xin Huang, Xianping Ge, Silli Laban Moosa, Bo Liu, Mingchun Ren, Qunlan Zhou, Hualiang Liang, Wuxiao Zhang, Liangkun Pan
This study was conducted to investigate the effects of oral administration of a high concentration of glucose on the respiratory burst, antioxidant status, and hepatic gene expression of heme oxygenase-1 (ho1) and PI3K/Akt/Nrf2-related signaling molecules in juvenile blunt snout bream (Megalobrama amblycephala). Blunt snout bream juveniles with an initial body weight of 19.94 ± 0.58 g were orally fed with a high concentration of glucose (3 g/kg body weight). The results indicated that plasma glucose exhibited a biphasic response...
September 4, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28860752/gold-nanoparticles-reduce-high-glucose-induced-oxidative-nitrosative-stress-regulated-inflammation-and-apoptosis-via-tuberin-mtor-nf-%C3%AE%C2%BAb-pathways-in-macrophages
#12
Huma Rizwan, Jagdeep Mohanta, Satyabrata Si, Arttatrana Pal
Hyperglycemia is a risk factor for cardiovascular mortality and morbidity, and directly responsible for exacerbating macrophage activation and atherosclerosis. We showed that gold nanoparticles (AuNPs) reduce the high glucose (HG)-induced atherosclerosis-related complications in macrophages via oxidative-nitrosative stress-regulated inflammation and apoptosis. The effects of AuNPs on oxidative-nitrosative stress markers such as cellular antioxidants were attenuated by HG exposure, leading to reduction in the accumulation of reactive oxygen/nitrogen species in cellular compartments...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28853981/intermittent-fasting-preserves-beta-cell-mass-in-obesity-induced-diabetes-via-the-autophagy-lysosome-pathway
#13
Haiyan Liu, Ali Javaheri, Rebecca J Godar, John Murphy, Xiucui Ma, Nidhi Rohatgi, Jana Mahadevan, Krzysztof Hyrc, Paul Saftig, Connie Marshall, Michael L McDaniel, Maria S Remedi, Babak Razani, Fumihiko Urano, Abhinav Diwan
Obesity-induced diabetes is characterized by hyperglycemia, insulin resistance, and progressive beta cell failure. In islets of mice with obesity-induced diabetes, we observe increased beta cell death and impaired autophagic flux. We hypothesized that intermittent fasting, a clinically sustainable therapeutic strategy, stimulates autophagic flux to ameliorate obesity-induced diabetes. Our data show that despite continued high-fat intake, intermittent fasting restores autophagic flux in islets and improves glucose tolerance by enhancing glucose-stimulated insulin secretion, beta cell survival, and nuclear expression of NEUROG3, a marker of pancreatic regeneration...
August 30, 2017: Autophagy
https://www.readbyqxmd.com/read/28846859/diosmin-ameliorates-the-effects-of-oxidative-stress-in-lenses-of-streptozotocin-induced-type-1-diabetic-rats
#14
Weronika Wojnar, Ilona Kaczmarczyk-Sedlak, Maria Zych
BACKGROUND: Diabetic cataractogenesis is a complex process connected with hyperglycemia and oxidative stress. Free radicals induce many unfavorable changes in the activity of the antioxidative enzymes and may also lead to oxidative damage. Since diosmin, a plant-derived flavonoid, reveals antioxidative activity, the aim of the study was to investigate if this substance may counteract the oxidative stress in the lenses of diabetic rats. METHODS: The study was conducted on the male Wistar rats with streptozotocin-induced type 1 diabetes...
April 15, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28842639/metabolomic-analysis-reveals-vitamin-d-induced-decrease-in-polyol-pathway-and-subtle-modulation-of-glycolysis-in-hek293t-cells
#15
G C Santos, J D Zeidler, J A Pérez-Valencia, A C B Sant'Anna-Silva, A T Da Poian, T El-Bacha, F C L Almeida
We combined (1)H NMR metabolomics with functional and molecular biochemical assays to describe the metabolic changes elicited by vitamin D in HEK293T, an embryonic proliferative cell line adapted to high-glucose concentrations. Activation of the polyol pathway, was the most important consequence of cell exposure to high glucose concentration, resembling cells exposed to hyperglycemia. Vitamin D induced alterations in HEK293T cells metabolism, including a decrease in sorbitol, glycine, glutamate, guanine. Vitamin D modulated glycolysis by increasing phosphoglycerate mutase and decreasing enolase activities, changing carbon fate without changing glucose consumption, lactate export and Krebs cycle...
August 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28838347/synaptosomal-and-mitochondrial-oxidative-damage-followed-by-behavioral-impairments-in-streptozotocin-induced-diabetes-mellitus-restoration-by-malvastrum-tricuspidatum
#16
I Solanki, P Parihar, R Shetty, M S Parihar
Synaptosomal and mitochondrial impairments in the brain of diabetic individual manifest metabolic risk factors that most likely affect the brain functions. Diabetes is associated with the structural and functional alterations of the brain and neuronal loss leading to cognitive and other behavioral impairments, thus reducing the quality of life. The biochemical mechanisms underlying the diabetes-associated behavioral decline are poorly understood. In the present study, we examined the effects of hyperglycemia on the oxidative stress and behavioral functions in streptozotocin-induced diabetic mice...
August 15, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28836407/administration-of-selenium-decreases-lipid-peroxidation-and-increases-vascular-endothelial-growth-factor-in-streptozotocin-induced-diabetes-mellitus
#17
Pervinl Vural, Gulcan Kabaca, Refia Deniz Firat, Sevgin Degirmencioglu
OBJECTIVES: The imbalance in oxidant/antioxidant status plays a pivotal role in diabetes mellitus (DM). Selenium is a integral component of the antioxidant enzyme glutathione peroxidase. Se treatment induces angiogenesis and improves endothelial function through increased expression of vascular endothelial growth factor (VEGF). The aim of this study is to investigate the effect of selenium on oxidative stress, VEGF, and endothelin 1 (ET1) in a DM rat model. MATERIALS AND METHODS: We performed an experimental animal study with 64 adult male Wistar-Albino rats...
October 2017: Cell Journal
https://www.readbyqxmd.com/read/28831032/salidroside-reduces-high-glucose-induced-podocyte-apoptosis-and-oxidative-stress-via-upregulating-heme-oxygenase-1-ho-1-expression
#18
Hua Lu, Ying Li, Tao Zhang, Maodong Liu, Yanqing Chi, Shuxia Liu, Yonghong Shi
BACKGROUND Hyperglycemia is one of the most dangerous factors causing diabetic nephropathy. Salidroside is considered to have the effects of reducing oxidative stress damage and improving cell viability. This study was performed to investigate whether and how salidroside reduces high-glucose (HG)-induced apoptosis in mouse podocytes. MATERIAL AND METHODS We examined whether salidroside could decrease HG-induced podocyte oxidative stress and podocyte apoptosis in vitro. The potential signaling pathways were also investigated...
August 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28828539/dysfunctional-hdl-in-diabetes-mellitus-and-its-role-in-the-pathogenesis-of-cardiovascular-disease
#19
REVIEW
Rai Ajit K Srivastava
Coronary artery disease, the leading cause of death in the developed and developing countries, is prevalent in diabetes mellitus with 68% cardiovascular disease (CVD)-related mortality. Epidemiological studies suggested inverse correlation between HDL and CVD occurrence. Therefore, low HDL concentration observed in diabetic patients compared to non-diabetic individuals was thought to be one of the primary causes of increased risks of CVD. Efforts to raise HDL level via CETP inhibitors, Torcetrapib and Dalcetrapib, turned out to be disappointing in outcome studies despite substantial increases in HDL-C, suggesting that factors beyond HDL concentration may be responsible for the increased risks of CVD...
August 21, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28811292/dapagliflozin-slows-the-progression-of-the-renal-and-liver-fibrosis-associated-with-type-2-diabetes
#20
Li Tang, Yuanyuan Wu, Mi Tian, C David Sjostrom, Ulrika Johansson, Xiao-Rong Peng, David M Smith, Yufeng Huang
Sodium-glucose cotransporter 2 (SGLT2) inhibitors are a new class of antidiabetic oral agents indicating promising effects on cardiovascular and renal end points. However, the renoprotective effects of SGLT2 inhibitors are not fully understood. Also, metabolic effects of SGLT2 inhibition on other organ systems such as effects on hepatic steatosis are not fully understood. This study sought to address these questions by treating 18week-old uninephrectomized db/db mice with a selective SGLT2 inhibitor dapagliflozin...
August 15, 2017: American Journal of Physiology. Endocrinology and Metabolism
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