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Impaired glucose tolerance

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https://www.readbyqxmd.com/read/29777831/microcystis-bloom-containing-microcystin-lr-induces-type-2-diabetes-mellitus
#1
Qiong Zhang, Wendi Qin, Liuyan Yang, Jing An, Xuxiang Zhang, Hao Hong, Lizhi Xu, Yaping Wang
Epidemiological data from Lake Taihu showed significantly higher incidences of type 2 diabetes mellitus (T2DM) than in other areas of China. This may be related to the occurrence of a Microcystis bloom in Lake Taihu in the summer and autumn every year. The objective of this study is to investigate whether the contaminated water from the Microcystis bloom and the derivative pollutant microcystin-LR (MC-LR) can explain the higher incidences of T2DM. Healthy male mice were fed with water from different regions of Lake Taihu, and were either acutely or chronically exposed to MC-LR through oral administration or intraperitoneal injection...
May 16, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29777745/serum-adiponectin-ferritin-ratio-in-relation-to-the-risk-of-type-2-diabetes-and-insulin-sensitivity
#2
Alex Aregbesola, Vanessa D F de Mello, Jaana Lindström, Sari Voutilainen, Jyrki K Virtanen, Sirkka Keinänen-Kiukaanniemi, Tomi-Pekka Tuomainen, Jaakko Tuomilehto, Uusitupa Matti
AIMS: Body iron inhibits the metabolism of adiponectin, an insulin sensitizing adipokine. We investigated the relationships of baseline and average of 4-year change in values of serum adiponectin (sA), serum ferritin (sF) and sA/sF ratio on type 2 diabetes (T2D) risk and insulin sensitivity (Matsuda ISI) and secretion (disposition index; DI30 ). METHODS: Prospective analyses were conducted in participants with impaired glucose tolerance of the Finnish Diabetes Prevention Study (n=516) recruited in 1993-1998...
May 16, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29777263/folate-treatment-of-pregnant-rat-dams-abolishes-metabolic-effects-in-female-offspring-induced-by-a-paternal-pre-conception-unhealthy-diet
#3
Jian Li, Yong-Ping Lu, Oleg Tsuprykov, Ahmed A Hasan, Christoph Reichetzeder, Mei Tian, Xiao Li Zhang, Qin Zhang, Guo-Ying Sun, Jingli Guo, Mohamed M S Gaballa, Xiao-Ning Peng, Ge Lin, Berthold Hocher
AIMS/HYPOTHESIS: Paternal high-fat diet prior to mating programmes impaired glucose tolerance in female offspring. We examined whether the metabolic consequences in offspring could be abolished by folate treatment of either the male rats before mating or the corresponding female rats during pregnancy. METHODS: Male F0 rats were fed either control diet or high-fat, high-sucrose and high-salt diet (HFSSD), with or without folate, before mating. Male rats were mated with control-diet-fed dams...
May 18, 2018: Diabetologia
https://www.readbyqxmd.com/read/29774054/beta-adrenoceptor-blockade-ameliorates-impaired-glucose-tolerance-and-alterations-of-the-cerebral-ceramide-metabolism-in-an-experimental-model-of-ischemic-stroke
#4
Sebastian Luger, Annette Schwebler, Rajkumar Vutukuri, Nerea Ferreiros Bouzas, Sandra Labocha, Yannick Schreiber, Robert Brunkhorst, Helmuth Steinmetz, Josef Pfeilschifter, Waltraud Pfeilschifter
Background: Sphingolipids are versatile signaling molecules derived from membrane lipids of eukaryotic cells. Ceramides regulate cellular processes such as proliferation, differentiation and apoptosis and are involved in cellular stress responses. Experimental evidence suggests a pivotal role of sphingolipids in the pathogenesis of cardiovascular diseases, including ischemic stroke. A neuroprotective effect has been shown for beta-adrenergic antagonists in rodent stroke models and supported by observational clinical data...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29773801/lrrc8-vrac-anion-channels-enhance-%C3%AE-cell-glucose-sensing-and-insulin-secretion
#5
Till Stuhlmann, Rosa Planells-Cases, Thomas J Jentsch
Glucose homeostasis depends critically on insulin that is secreted by pancreatic β-cells. Serum glucose, which is directly sensed by β-cells, stimulates depolarization- and Ca2+ -dependent exocytosis of insulin granules. Here we show that pancreatic islets prominently express LRRC8A and LRRC8D, subunits of volume-regulated VRAC anion channels. Hypotonicity- or glucose-induced β-cell swelling elicits canonical LRRC8A-dependent VRAC currents that depolarize β-cells to an extent that causes electrical excitation...
May 17, 2018: Nature Communications
https://www.readbyqxmd.com/read/29773001/combined-administration-of-monosodium-glutamate-and-high-sucrose-diet-accelerates-the-induction-of-type-2-diabetes-vascular-dysfunction-and-memory-impairment-in-rats
#6
Kaja Saikrishna, Ringu Kumari, Kantamaneni Chaitanya, Subhankar Biswas, Pawan G Nayak, Jayesh Mudgal, Anoop Kishore, Krishnadas Nandakumar
In this study, we aimed to develop an experimental animal model for type 2 diabetes mellitus (T2DM) using a combination of monosodium glutamate (MSG) and high sucrose diet (HSD). Young male Wistar rats (20-30 g) were injected with MSG (2 or 4 mg/g, i.p. for 4 days). These rats were also fed an HSD, while the control group was fed a starch diet (SFD) for 150 days. Parameters assessed periodically were body weight, feed intake, blood glucose level, and oral glucose tolerance test (OGTT), lipid profile, liver and kidney function tests, skeletal muscle glucose uptake, cognitive function tests, and microvascular changes using isolated rat aorta...
2018: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/29771124/genistein-ameliorates-non-alcoholic-fatty-liver-disease-by-targeting-thromboxane-a2-pathway
#7
Wenzhe Wang, Junliang Chen, Jinyan Mao, Hongling Li, Mingfu Wang, Hao Zhang, Haitao Li, Wei Chen
Non-alcoholic fatty liver disease (NAFLD) is now a public health issue worldwide, but no drug has received approval yet. Genistein, an isoflavonoid derived from soybean, ameliorates high fat diet-induced NAFLD in mice, but the molecular underpinnings remain largely elusive. Arachidonic acid is a major ingredient of animal fats, and arachidonic acid cascade has been implicated in chronic inflammation. In this study, we investigated whether genistein against NAFLD by targeting arachidonic acid cascade. By using a mouse model, we showed that genistein supplementation improved high-fat diet induced NAFLD by normalizing hepatomegaly, liver steatosis, aminotransferase abnormalities and glucose tolerance...
May 17, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29770126/crosstalk-between-the-unfolded-protein-response-micrornas-and-insulin-signaling-pathways-in-search-of-biomarkers-for-the-diagnosis-and-treatment-of-type-2-diabetes
#8
REVIEW
Chinar Berry, Megha Lal, B K Binukumar
Type 2 diabetes mellitus (T2DM) is a metabolic disorder that is characterized by functional defects in glucose metabolism and insulin secretion. Its complex etiology and multifaceted nature have made it difficult to design effective therapies for early diagnosis and treatment. Several lines of evidence indicate that aberrant activation of the unfolded protein response (UPR) in response to endoplasmic reticulum (ER) stress impairs the β cell's ability to respond to glucose and promotes apoptosis. Elucidating the molecular mechanisms that govern β cell dysfunction and cell death can help investigators design therapies to halt or prevent the development of T2DM...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29768196/loss-of-abhd15-impairs-the-anti-lipolytic-action-of-insulin-by-altering-pde3b-stability-and-contributes-to-insulin-resistance
#9
Wenmin Xia, Ariane R Pessentheiner, Dina C Hofer, Melina Amor, Renate Schreiber, Gabriele Schoiswohl, Thomas O Eichmann, Evelyn Walenta, Bianca Itariu, Gerhard Prager, Hubert Hackl, Thomas Stulnig, Dagmar Kratky, Thomas Rülicke, Juliane G Bogner-Strauss
Elevated circulating fatty acids (FAs) contribute to obesity-associated metabolic complications, but the mechanisms by which insulin suppresses lipolysis are poorly understood. We show that α/β-hydrolase domain-containing 15 (ABHD15) is required for the anti-lipolytic action of insulin in white adipose tissue (WAT). Neither insulin nor glucose treatments can suppress FA mobilization in global and conditional Abhd15-knockout (KO) mice. Accordingly, insulin signaling is impaired in Abhd15-KO adipocytes, as indicated by reduced AKT phosphorylation, glucose uptake, and de novo lipogenesis...
May 15, 2018: Cell Reports
https://www.readbyqxmd.com/read/29766292/gut-derived-lipopolysaccharides-increase-post-prandial-oxidative-stress-via-nox2-activation-in-patients-with-impaired-fasting-glucose-tolerance-effect-of-extra-virgin-olive-oil
#10
Roberto Carnevale, Daniele Pastori, Cristina Nocella, Vittoria Cammisotto, Simona Bartimoccia, Marta Novo, Maria Del Ben, Alessio Farcomeni, Francesco Angelico, Francesco Violi
PURPOSE: Post-prandial phase is characterized by enhanced oxidative stress but the underlying mechanism is unclear. We investigated if gut-derived lipopolysaccharide (LPS) is implicated in this phenomenon and the effect of extra virgin olive oil (EVOO) in patients with impaired fasting glucose (IFG). METHODS: This is a randomized cross-over interventional study including 30 IFG patients, to receive a lunch with or without 10 g of EVOO. Serum LPS, Apo-B48, markers of oxidative stress such as oxidized LDL (oxLDL) and soluble Nox2-derived peptide (sNox2-dp), a marker of nicotinamide-adenine-dinucleotide-phosphate oxidase isoform Nox2 activation, and plasma polyphenols were determined before, 60 and 120 min after lunch...
May 16, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29765987/insulin-secretion-and-risk-for-future-diabetes-in-subjects-with-a-nonpositive-insulinogenic-index
#11
Daisuke Aono, Rie Oka, Mitsuhiro Kometani, Yoshimichi Takeda, Shigehiro Karashima, Kenichi Yoshimura, Yoshiyu Takeda, Takashi Yoneda
Aim: To characterize subjects with a nonpositive insulinogenic index and longitudinally observe changes in their glucose tolerance. Subjects and Methods: A historical cohort study was conducted using data from the medical checkups of public school workers. Indices of insulin secretion and insulin sensitivity derived from oral glucose tolerance test (OGTT) and the incidences of diabetes and impaired glucose tolerance (IGT) were compared among subgroups of subjects with different insulinogenic index (change in insulin/change in glucose over the first 30 min on the OGTT)...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29760586/atorvastatin-and-diacerein-reduce-insulin-resistance-and-increase-disease-tolerance-in-rats-with-sepsis
#12
K L C da Silva, A P Camacho, F C Mittestainer, B M Carvalho, A Santos, D Guadagnini, A G Oliveira, M J A Saad
Background: Sepsis is one of the leading causes of death among hospitalized patients. At the onset of this condition, there is an over-production of pro-inflammatory mediators that contribute to organ failure and death. The excess production of pro-inflammatory mediators also impairs insulin signaling, which may be a pathophysiological tissue marker of proinflammatory cytokine action before organ failure. Statins and diacerein have pleiotropic effects, such as the blockage of inflammatory signaling pathways, suggesting that these drugs may be an attractive therapeutic or prophylactic strategy against sepsis...
2018: Journal of Inflammation
https://www.readbyqxmd.com/read/29753302/contribution-of-hepatic-retinaldehyde-dehydrogenase-induction-to-impairment-of-glucose-metabolism-by-high-fat-diet-feeding-in-c57bl-6j-mice
#13
Jiong Xu, Mian Zhang, Xiangping Zhang, Hanyu Yang, Binbin Sun, Zhongjian Wang, Yaqian Zhou, Shuting Wang, Xiaodong Liu, Li Liu
Obesity and insulin resistance are associated with overexpression of retinaldehyde dehydrogenase 1 (RALDH1). We aimed to investigate the roles of hepatic RALDH1 induction in glucose metabolism impairment using mice fed with high-fat diet (HFD). Mice were fed with HFD for 8 weeks and treated with RALDH inhibitor citral for another 4 weeks. Oral glucose tolerance test (OGTT), pyruvate tolerance test (PTT) and insulin tolerance test (ITT) were operated. Expressions of Phosphoenolpyruvate carboxykinase 1 (PCK1), glucokinase (GCK) and RALDH1 were measured...
May 12, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29750886/co-administration-of-conjugated-linoleic-acid-and-rosiglitazone-increases-atherogenic-co-efficicient-and-alters-isoprenaline-induced-vasodilatation-in-rats-fed-high-fat-diet
#14
B K Chai, Y S Lau, B J Loong, M M Rais, K N Ting, D M Dharmani, M S Kumar
The cis(c)-9, trans(t)-11 (c9,t11) and t10,c12 isomers of conjugated linoleic acid (CLA) have been reported as agonists of peroxisome proliferator-activated receptor (PPAR) and beneficial in lipidemia and glycaemia. However, it is unclear whether CLA isomers enhance or antagonize effects of conventional drugs targeting PPAR. Male Sprague-Dawley rats were fed high fat diet (HFD) for 8 weeks and treated without or with CLA, rosiglitazone or both for 4 weeks. Oral glucose tolerance and surrogate markers of insulin resistance were not significantly different for all treatments compared to untreated normal diet (ND) or HFD group, except lipoprotein levels...
May 10, 2018: Physiological Research
https://www.readbyqxmd.com/read/29749571/hepatic-irs1-and-%C3%A3-catenin-expression-is-associated-with-histological-progression-and-overt-diabetes-emergence-in-nafld-patients
#15
Kenichiro Enooku, Mayuko Kondo, Naoto Fujiwara, Takayoshi Sasako, Junji Shibahara, Akira Kado, Kazuya Okushin, Hidetaka Fujinaga, Takeya Tsutsumi, Ryo Nakagomi, Tatsuya Minami, Masaya Sato, Hayato Nakagawa, Yuji Kondo, Yoshinari Asaoka, Ryosuke Tateishi, Kohjiro Ueki, Hitoshi Ikeda, Haruhiko Yoshida, Kyoji Moriya, Hiroshi Yotsuyanagi, Takashi Kadowaki, Masashi Fukayama, Kazuhiko Koike
BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a risk factor for type 2 diabetes. Our aim was to investigate the relationship between NAFLD and impaired glucose metabolism in terms of insulin receptor substrate 1 and 2 (IRS1 and IRS2) expression in the liver. METHODS: Liver biopsy was performed at the University of Tokyo Hospital between November 2011 and March 2016 on 146 patients with NAFLD who were not being treated with any diabetes or dyslipidemia drugs...
May 10, 2018: Journal of Gastroenterology
https://www.readbyqxmd.com/read/29746922/diabetes-and-pancreatic-neuroendocrine-tumours-which-interplays-if-any
#16
REVIEW
Marco Gallo, Rosaria Maddalena Ruggeri, Giovanna Muscogiuri, Genoveffa Pizza, Antongiulio Faggiano, Annamaria Colao
Pancreatic neuroendocrine tumours (PanNETs) represent an uncommon type of pancreatic neoplasm, whose incidence is increasing worldwide. As per exocrine pancreatic cancer, a relationship seems to exist between PanNETs and glycaemic alterations. Diabetes mellitus (DM) or impaired glucose tolerance often occurs in PanNET patients as a consequence of hormonal hypersecretion by the tumour, specifically affecting glucose metabolism, or due to tumour mass effects. On the other hand, pre-existing DM may represent a risk factor for developing PanNETs and is likely to worsen the prognosis of such patients...
May 2, 2018: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/29746846/o-linked-n-acetyl-glucosamine-deposition-in-placental-proteins-varies-according-to-maternal-glycemic-levels
#17
Vanessa Dela Justina, Rinaldo R Dos Passos Junior, Alecsander F Bressan, Rita C Tostes, Fernando S Carneiro, Thaigra S Soares, Gustavo T Volpato, Victor Vitorino Lima, Sebastian San Martin, Fernanda R Giachini
AIMS: Hyperglycemia increases glycosylation with O-linked N‑acetyl‑glucosamine (O-GlcNAc) contributing to placental dysfunction and fetal growth impairment. Our aim was to determine how O-GlcNAc levels are affected by hyperglycemia and the O-GlcNAc distribution in different placental regions. MAIN METHODS: Female Wistar rats were divided into the following groups: severe hyperglycemia (>300 mg/dL; n = 5); mild hyperglycemia (>140 mg/dL, at least than two time points during oral glucose tolerance test; n = 7) or normoglycemia (<120 mg/dL; n = 6)...
May 7, 2018: Life Sciences
https://www.readbyqxmd.com/read/29744538/endocrine-disrupting-chemicals-and-risk-of-diabetes-an-evidence-based-review
#18
REVIEW
P Monica Lind, Lars Lind
The purpose of this study was to review the epidemiological and experimental evidence linking background exposure to a selection of environmental endocrine-disrupting chemicals (EDCs) with diabetes and impaired glucose metabolism. The review summarises the literature on both cross-sectional and prospective studies in humans, as well as experimental in vivo and in vitro studies. The findings were subjected to evidence grading according to the Grading of Recommendations Assessment, Development and Evaluation (GRADE) classification...
May 9, 2018: Diabetologia
https://www.readbyqxmd.com/read/29743813/plasma-asprosin-concentrations-are-increased-in-individuals-with-glucose-dysregulation-and-correlated-with-insulin-resistance-and-first-phase-insulin-secretion
#19
Yuren Wang, Hua Qu, Xin Xiong, Yuyang Qiu, Yong Liao, Yingchun Chen, Yi Zheng, Hongting Zheng
Background: Adipokines are reported to participate in many common pathologic processes of glucose dysregulation, such as insulin resistance, β -cell dysfunction, and chronic inflammation. Objective: To detect the concentrations of plasma asprosin in subjects with impaired glucose regulation (IGR) and newly diagnosed type 2 diabetes (nT2DM) and its relationship to parameters of glucose and lipid metabolism, insulin resistance, and pancreatic β -cell function. Methods: 143 eligible participants were included and were divided into three groups including normal glucose regulation (NGR, n = 52), IGR ( n = 40), and nT2DM group ( n = 51)...
2018: Mediators of Inflammation
https://www.readbyqxmd.com/read/29743321/identical-anthropometric-characteristics-of-impaired-fasting-glucose-combined-with-impaired-glucose-tolerance-and-newly-diagnosed-type-2-diabetes-anthropometric-indicators-to-predict-hyperglycaemia-in-a-community-based-prospective-cohort-study-in-southwest
#20
Fang Zhang, Qin Wan, Hongyi Cao, Lizhi Tang, Daigang Li, Qingguo Lü, Zhe Yan, Jing Li, Qiu Yang, Yuwei Zhang, Nanwei Tong
OBJECTIVES: To assess the anthropometric characteristics of normoglycaemic individuals who subsequently developed hyperglycaemia, and to evaluate the validity of these measures to predict prediabetes and diabetes. DESIGN: A community-based prospective cohort study. PARTICIPANTS: In total, 1885 residents with euglycaemia at baseline from six communities were enrolled. SETTING: Sichuan, southwest China. PRIMARY OUTCOME MEASURES: The incidences of prediabetes and diabetes were the primary outcomes...
May 9, 2018: BMJ Open
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