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Insulin resistance & oxidation stress

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https://www.readbyqxmd.com/read/29343256/the-effects-of-green-cardamom-supplementation-on-blood-glucose-lipids-profile-oxidative-stress-sirtuin-1-and-irisin-in-type-2-diabetic-patients-a-study-protocol-for-a-randomized-placebo-controlled-clinical-trial
#1
Mohadeseh Aghasi, Shohreh Ghazi-Zahedi, Fariba Koohdani, Fereydoun Siassi, Ensieh Nasli-Esfahani, Ali Keshavarz, Mostafa Qorbani, Hoorieh Khoshamal, Asma Salari-Moghaddam, Gity Sotoudeh
BACKGROUND: It has been suggested that the antioxidant, anti-inflammatory and hypolipidemic activities of cardamom may improve diabetes. However, the effect of this spice has not been investigated in diabetic subjects. This study was planned to determine the effects of green cardamom on blood glucose, lipids and oxidative stress status in type 2 diabetic patients. METHODS/DESIGN: Eighty overweight or obese patients with type 2 diabetes will be selected. They will be randomly assigned to receive 3 g/d green cardamom or placebo for 10 weeks...
January 17, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29342113/mitochondria-oxidative-stress-and-the-kynurenine-system-with-a-focus-on-ageing-and-neuroprotection
#2
REVIEW
Katalin Sas, Elza Szabó, László Vécsei
In this review, the potential causes of ageing are discussed. We seek to gain insight into the main physiological functions of mitochondria and discuss alterations in their function and the genome, which are supposed to be the central mechanisms in senescence. We conclude by presenting the potential modulating role of the kynurenine pathway in the ageing processes. Mitochondrial dynamics are supposed to have important physiological roles in maintaining cell homeostasis. During ageing, a decrease in mitochondrial dynamics was reported, potentially compromising the function of mitochondria...
January 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29341349/peroxiredoxin-4-prdx4-its-critical-in-vivo-roles-in-animal-models-of-metabolic-syndrome-ranging-from-atherosclerosis-to-nonalcoholic-fatty-liver-disease
#3
REVIEW
Sohsuke Yamada, Xin Guo
The peroxiredoxin (PRDX) family, a new family of proteins with a pivotal antioxidative function, is ubiquitously synthesized and abundantly identified in various organisms. In contrast to the intracellular localization of other family members (PRDX1/2/3/5/6), PRDX4 is the only known secretory form and protects against oxidative damage by scavenging reactive oxygen species in both the intracellular (especially the endoplasmic reticulum) compartments and the extracellular space. We generated unique human PRDX4 (hPRDX4) transgenic (Tg) mice on a C57BL/6J background and investigated the critical and diverse protective roles of PRDX4 against diabetes mellitus, atherosclerosis, insulin resistance, and nonalcoholic fatty liver disease (NAFLD) as well as evaluated its role in the intestinal function in various animal models...
January 17, 2018: Pathology International
https://www.readbyqxmd.com/read/29336982/il-6-receptor-blockade-ameliorates-diabetic-nephropathy-via-inhibiting-inflammasome-in-mice
#4
Rui Wu, Xuanchen Liu, Jianyong Yin, Huijuan Wu, Xiulei Cai, Niansong Wang, Youcun Qian, Feng Wang
BACKGROUND AND OBJECTIVE: Interleukin 6 (IL-6) has been identified as a key mediator in inflammation, immune responses and glucose metabolism. In this study, we assessed the effects of an IL-6 receptor antibody on diabetic nephropathy in a mouse model of type 2 diabetes mellitus. METHODS: Twelve week old male db/db mice were treated with Tocilizumab (an IL-6 receptor antibody), normal IgG1 control antibody, insulin or normal saline for 12 weeks. Renal injury, inflammation and insulin resistance were assessed...
January 11, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29329795/omega-3-fatty-acids-and-adipose-tissue-biology
#5
REVIEW
Ondrej Kuda, Martin Rossmeisl, Jan Kopecky
This review provides evidence for the importance of white and brown adipose tissue (i.e. WAT and BAT) function for the maintenance of healthy metabolic phenotype and its preservation in response to omega-3 polyunsaturated fatty acids (omega-3 PUFA), namely in the context of diseased states linked to aberrant accumulation of body fat, systemic low-grade inflammation, dyslipidemia and insulin resistance. More specifically, the review deals with (i) the concept of immunometabolism, i.e. how adipose-resident immune cells and adipocytes affect each other and define the immune-metabolic interface; and (ii) the characteristic features of "healthy adipocytes" in WAT, which are relatively small fat cells endowed with a high capacity for mitochondrial oxidative phosphorylation, triacylglycerol/fatty acid (TAG/FA) cycling and de novo lipogenesis (DNL)...
January 9, 2018: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29328028/-skin-pathology-in-diabetes-mellitus-clinical-and-pathophysiological-correlations-review
#6
K Kochet, I Lytus, I Svistunov, O Sulaieva
Skin pathology is registered in vast majority of patients with diabetes mellitus (DM). Despite the abundance of publications on dermatological problems in DM, there is still a number of gaps to be discussed in terms of pathophysiological mechanisms. The goal of this review was to assess the mechanisms of development of different skin pathologies under DM. One of the key pathogenic mechanisms of skin lesions in diabetes is hyperglycemia and the effects of the advanced glycation end products, inducing oxidative stress, endothelial dysfunction and inflammation; that in its turn can accelerate the mechanisms of skin aging, the development of diabetic dermopathy and scleredema diabeticorum...
December 2017: Georgian Medical News
https://www.readbyqxmd.com/read/29327118/effect-of-cpap-therapy-on-liver-disease-in-patients-with-osa-a-review
#7
REVIEW
Xin Liu, Yuyang Miao, Fan Wu, Tingting Du, Qiang Zhang
Obstructive sleep apnea (OSA) may play an important role in the progression of nonalcoholic fatty liver disease (NAFLD).The effect of continuous positive airway pressure (CPAP) treatment, the first-line therapy for OSA, on liver disease in OSA patients is still debated. We provide this review of previous studies to summarize the effects of CPAP treatment on liver disease in OSA patients in aspects of liver function, liver steatosis, fibrosis, and incidence of liver disease. CPAP treatment may be beneficial to liver disease in subjects with OSA independent of metabolic risk factors, but a sufficiently long therapeutic duration (perhaps greater than 3 months) may be needed to achieve these positive effects...
January 11, 2018: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/29321950/manifestations-of-renal-impairment-in-fructose-induced-metabolic-syndrome
#8
Kameliya Bratoeva, George S Stoyanov, Albena Merdzhanova, Mariya Radanova
Introduction International studies show an increased incidence of chronic kidney disease (CKD) in patients with metabolic syndrome (MS). It is assumed that the major components of MS - obesity, insulin resistance, dyslipidemia, and hypertension - are linked to renal damage through the systemic release of several pro-inflammatory mediators, such as uric acid (UA), C-reactive protein (CRP), and generalized oxidative stress. The aim of the present study was to investigate the extent of kidney impairment and manifestations of dysfunction in rats with fructose-induced MS...
November 7, 2017: Curēus
https://www.readbyqxmd.com/read/29316965/decreased-microglial-activation-through-gut-brain-axis-by-prebiotics-probiotics-or-synbiotics-effectively-restored-cognitive-function-in-obese-insulin-resistant-rats
#9
Titikorn Chunchai, Wannipa Thunapong, Sakawdaurn Yasom, Keerati Wanchai, Sathima Eaimworawuthikul, Gabrielle Metzler, Anusorn Lungkaphin, Anchalee Pongchaidecha, Sasithorn Sirilun, Chaiyavat Chaiyasut, Wasana Pratchayasakul, Parameth Thiennimitr, Nipon Chattipakorn, Siriporn C Chattipakorn
BACKGROUND: Chronic high-fat diet (HFD) consumption caused not only obese-insulin resistance, but also cognitive decline and microglial hyperactivity. Modified gut microbiota by prebiotics and probiotics improved obese-insulin resistance. However, the effects of prebiotics, probiotics, and synbiotics on cognition and microglial activity in an obese-insulin resistant condition have not yet been investigated. We aimed to evaluate the effect of prebiotic (Xyloolidosaccharide), probiotic (Lactobacillus paracasei HII01), or synbiotics in male obese-insulin resistant rats induced by a HFD...
January 9, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29316242/sustained-high-fat-diet-modulates-inflammation-insulin-signalling-and-cognition-in-mice-and-a-modified-xenin-peptide-ameliorates-neuropathology-in-a-chronic-high-fat-model
#10
Paul Denver, Victor A Gault, Paula L McClean
AIMS: Metabolic disease increases risk of Alzheimer's disease and cognitive dysfunction. Chronic high fat diet (HFD) feeding leads to cognitive impairment and neuroinflammation. This study demarcated pathological events in brain as a result of short-term to chronic HFD feeding. Efficacy of Xenin-25[Lys(13)PAL] was assessed in chronic HFD-fed mice. METHODS: C57BL/6 mice were fed HFD or normal diet for 18 days, 34 days, 10 and 21 weeks. Cognition was assessed using novel object recognition and Morris water maze...
January 5, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29311488/role-of-supplementary-selenium-on-the-induction-of-insulin-resistance-and-oxidative-stress-in-nsy-mice-fed-a-high-fat-diet
#11
Koichi Murano, Hirofumi Ogino, Tomofumi Okuno, Tomohiro Arakawa, Hitoshi Ueno
The role of supplementary selenium on the induction of insulin resistance and oxidative stress in a diabetic mouse model was investigated in NSY mice on a high fat diet (HFD) and administered seleno-L-methionine (SeMet)-containing water for 12 weeks. Significant increases in oral glucose tolerance-tested (OGTT), insulin tolerance-tested, and non-fasting blood glucose levels were observed in mice on a HFD, as well as the significant increases in OGTT and non-fasting plasma insulin levels. Mice on a HFD had decreased plasma adiponectin levels and increased free fatty acid (FFA) levels...
2018: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/29307112/the-influences-of-chromium-supplementation-on-glycemic-control-markers-of-cardio-metabolic-risk-and-oxidative-stress-in-infertile-polycystic-ovary-syndrome-women-candidate-for-in-vitro-fertilization-a-randomized-double-blind-placebo-controlled-trial
#12
Mehri Jamilian, Shahrzad Zadeh Modarres, Mehrnush Amiri Siavashani, Maryam Karimi, Alireza Mafi, Vahidreza Ostadmohammadi, Zatollah Asemi
This study was carried out to investigate the effects of chromium intake on glycemic control, markers of cardio-metabolic risk, and oxidative stress in infertile polycystic ovary syndrome (PCOS) women candidate for in vitro fertilization (IVF). This randomized double-blind, placebo-controlled trial was done among 40 subjects with infertile PCOS candidate for IVF, aged 18-40 years old. Individuals were randomly allocated into two groups to take either 200 μg/day of chromium (n = 20) or placebo (n = 20) for 8 weeks...
January 6, 2018: Biological Trace Element Research
https://www.readbyqxmd.com/read/29306246/hyperbolic-relation-between-beta-cell-function-and-insulin-sensitivity-for-type-2-diabetes-mellitus-malaria-influenza-helicobacter-pylori-chlamydia-pneumoniae-and-hepatitis-c-virus-infection-induced-inflammation-oxidative-stress-and-temporary-insulin-resistance
#13
Jean Bosco Kasiam Lasi On'kin, Benjamin Longo-Mbenza, Venant Tchokonte-Nana, Augustin Nge Okwe, Nelly Kangola Kabangu
Background/aim: We calculated the homeostatic model assessment (HOMA) for estimating insulin sensitivity and beta-cell function in normal, healthy nondiabetics with infections (malaria, influenza, HIV, Helicobacter pylori, Chlamydia pneumoniae, and hepatitis C virus), type 2 diabetic black patients, and healthy controls from Kinshasa, DR Congo. Materials and methods: A case-control study was carried out between 2006 and 2007 for black Central African participants managed for HOMA.Results: In total, 219 patients and 110 healthy controls were matched for sex and age...
December 19, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29299636/skeletal-muscle-insulin-resistance-is-induced-by-4-hydroxy-2-hexenal-a-by-product-of-n-3-fatty-acid-peroxidation
#14
Christophe O Soulage, Laura Sardón Puig, Laurent Soulère, Bader Zarrouki, Michel Guichardant, Michel Lagarde, Nicolas J Pillon
AIMS/HYPOTHESIS: Oxidative stress is involved in the pathophysiology of insulin resistance and its progression towards type 2 diabetes. The peroxidation of n-3 polyunsaturated fatty acids produces 4-hydroxy-2-hexenal (4-HHE), a lipid aldehyde with potent electrophilic properties able to interfere with many pathophysiological processes. The aim of the present study was to investigate the role of 4-HHE in the development of insulin resistance. METHODS: 4-HHE concentration was measured in plasma from humans and rats by GC-MS...
January 3, 2018: Diabetologia
https://www.readbyqxmd.com/read/29296613/mglur2-3-activation-of-the-sirt1-axis-preserves-mitochondrial-function-in-diabetic-neuropathy
#15
Krish Chandrasekaran, Anjaneyulu Muragundla, Tyler G Demarest, Joungil Choi, Avinash R Sagi, Neda Najimi, Pranith Kumar, Anmol Singh, Cheng-Ying Ho, Gary Fiskum, Lauren G Koch, Steven L Britton, James W Russell
Objectives: There is a critical need to develop effective treatments for diabetic neuropathy. This study determined if a selective mGluR2/3 receptor agonist prevented or treated experimental diabetic peripheral neuropathy (DPN) through glutamate recycling and improved mitochondrial function. Methods: Adult male streptozotocin treated Sprague-Dawley rats with features of type 1 diabetes mellitus (T1DM) or Low Capacity Running (LCR) rats with insulin resistance or glucose intolerance were treated with 3 or 10 mg/kg/day LY379268...
December 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29288757/do-flavanols-rich-natural-products-relieve-obesity-related-insulin-resistance
#16
REVIEW
Ayse Basak Engin, Aristidis M Tsatsakis, Dimitris Tsoukalas, Atilla Engin
Growing evidence support that insulin resistance may occur as a severe problem due to chronic energetic overfeeding and subsequent obesity. When an abundance of glucose and saturated fat enter the cell, impaired blood flow, hypoxia, inflammation and macrophage infiltration in obese adipose tissue may induce oxidative stress and insulin resistance. Excessive circulating saturated fatty acids ectopically accumulate in insulin-sensitive tissues and impair insulin action. In this context, excessive hepatic lipid accumulation may play a central, pathogenic role in insulin resistance...
December 27, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29287685/medicinal-plants-and-bioactive-natural-compounds-in-the-treatment-of-non-alcoholic-fatty-liver-disease-a-clinical-review
#17
REVIEW
Mohammad Bagherniya, Valerio Nobili, Christopher N Blesso, Amirhossein Sahebkar
Non-alcoholic fatty liver disease (NAFLD) is a major cause of liver diseases, and is closely related to metabolic syndrome and its related conditions, diabetes mellitus and dyslipidemia. On the other hand, NAFLD as a multisystem disease increases the risk of several chronic diseases include type 2 diabetes mellitus, cardiovascular disease (CVD), and chronic kidney disease. The main objective was to review the efficacy of bioactive natural compounds assessed by clinical trials. Search literature using four databases (PubMed, EBSCO, Web of Science, and Ovid Medline) to review publications that focused on the impact of bioactive natural compounds in NAFLD treatment...
December 26, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29284152/catalpol-ameliorates-hepatic-insulin-resistance-in-type-2-diabetes-through-acting-on-ampk-nox4-pi3k-akt-pathway
#18
Jiting Yan, Changyuan Wang, Yue Jin, Qiang Meng, Qi Liu, Zhihao Liu, Kexin Liu, Huijun Sun
Type 2 diabetes is characterized by insulin resistance in target tissues and hyperglycemia. Catalpol is a natural product isolated from the root of Rehmannia glutinosa, which has been reported to produce the effect of anti-diabetes in recent reports. The goal of the current study is to investigate the therapeutic effects of catalpol on hepatic insulin resistance in type 2 diabetes and elucidate the underlying cellular mechanisms. Type 2 diabetes in vivo was induced by combined high-fat diet (HFD) and streptozotocin (STZ) injection in C57BL/6J mice...
December 25, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29280174/scientific-evidence-on-the-links-between-periodontal-diseases-and-diabetes-consensus-report-and-guidelines-of-the-joint-workshop-on-periodontal-diseases-and-diabetes-by-the-international-diabetes-federation-and-the-european-federation-of-periodontology
#19
Mariano Sanz, Antonio Ceriello, Martin Buysschaert, Iain Chapple, Ryan T Demmer, Filippo Graziani, David Herrera, Søren Jepsen, Luca Lione, Phoebus Madianos, Manu Mathur, Eduard Montanya, Lior Shapira, Maurizio Tonetti, Daniel Vegh
BACKGROUND: Diabetes and periodontitis are chronic non-communicable diseases independently associated with mortality and have a bidirectional relationship. AIMS: To update the evidence for their epidemiological and mechanistic associations and re-examine the impact of effective periodontal therapy upon metabolic control (glycated haemoglobin, HbA1C). EPIDEMIOLOGY: There is strong evidence that people with periodontitis have elevated risk for dysglycaemia and insulin resistance...
August 24, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29276754/uncovering-a-predictive-molecular-signature-for-the-onset-of-nash-related-fibrosis-in-a-translational-nash-mouse-model
#20
Arianne van Koppen, Lars Verschuren, Anita M van den Hoek, Joanne Verheij, Martine C Morrison, Kelvin Li, Hiroshi Nagabukuro, Adalberto Costessi, Martien P M Caspers, Tim J van den Broek, John Sagartz, Cornelis Kluft, Carine Beysen, Claire Emson, Alain J van Gool, Roel Goldschmeding, Reinout Stoop, Ivana Bobeldijk-Pastorova, Scott M Turner, Guido Hanauer, Roeland Hanemaaijer
Background & Aims: The incidence of nonalcoholic steatohepatitis (NASH) is increasing. The pathophysiological mechanisms of NASH and the sequence of events leading to hepatic fibrosis are incompletely understood. The aim of this study was to gain insight into the dynamics of key molecular processes involved in NASH and to rank early markers for hepatic fibrosis. Methods: A time-course study in low-density lipoprotein-receptor knockout. Leiden mice on a high-fat diet was performed to identify the temporal dynamics of key processes contributing to NASH and fibrosis...
2018: Cellular and Molecular Gastroenterology and Hepatology
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