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https://www.readbyqxmd.com/read/28730728/beneficial-long-term-antidiabetic-actions-of-n-and-c-terminally-modified-analogues-of-apelin-13-in-diet-induced-obese-diabetic-mice
#1
V Parthsarathy, C Hogg, P R Flatt, F P M O'Harte
AIMS: This study investigated the chronic effects of twice daily administration of stable apelin analogues, apelin-13 amide and (pGlu)apelin-13 amide, on metabolic parameters in glucose intolerant and insulin resistant diet-induced obese (DIO) mice fed a high-fat diet for 150 days. STUDY DESIGN & METHODS: Groups of mice received twice daily (09:00 and 17:00 h) injections of saline vehicle, apelin-13 amide, (pGlu)apelin-13 amide or exendin-4(1-39) for 28 days (all at 25 nmol/kg)...
July 20, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/28729691/lowered-fasting-chenodeoxycholic-acid-correlated-with-the-decrease-of-fibroblast-growth-factor-19-in-chinese-subjects-with-impaired-fasting-glucose
#2
Jing Zhang, Huating Li, Hu Zhou, Li Fang, Jingjing Xu, Han Yan, Shuqin Chen, Qianqian Song, Yinan Zhang, Aimin Xu, Qichen Fang, Yang Ye, Weiping Jia
The gut-derived hormone Fibroblast growth factor 19 (FGF19) could regulate glucose metabolism and is induced by bile acids (BAs) through activating Farnesoid X Receptor (FXR). FGF19 was found to decrease in subjects with isolated-impaired fasting glucose (I-IFG) and type 2 diabetes mellitus (T2DM). However, the reason for the change of FGF19 in subjects with different glucometabolic status remained unclear. Here we measured six BAs including chenodeoxycholic acid (CDCA), cholic acid, deoxycholic acid, their glycine conjugates and FGF19 levels during oral glucose tolerance test (OGTT) in normal glucose tolerance (NGT), isolated-impaired glucose tolerance, I-IFG, combined glucose intolerance (CGI) and T2DM subjects...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729164/antenatal-antipsychotic-exposure-induces-multigenerational-and-gender-specific-programming-of-adiposity-and-glucose-tolerance-in-adult-mouse-offspring
#3
E Courty, P Gobalakichenane, M Garcia, A Muscat, C Kazakian, T Ledent, M Moldes, B Blondeau, D Mitanchez, M Buyse, B Fève
Second-generation antipsychotics (SGAs) are well known for their metabolic side effects in humans, including obesity and diabetes. These compounds are maintained during pregnancy to prevent the relapse of psychoses, but they readily diffuse across the placenta to the fetus, as documented with the widely-prescribed drug olanzapine (OLZ). However, observational studies have provided conflicting results on the potential impact of SGAs on fetal growth and body weight, and their effects on metabolic regulation in the offspring...
July 17, 2017: Diabetes & Metabolism
https://www.readbyqxmd.com/read/28725048/cd300f-il-5-cross-talk-inhibits-adipose-tissue-eosinophil-homing-and-subsequent-il-4-production
#4
Perri Rozenberg, Hadar Reichman, Israel Zab-Bar, Michal Itan, Metsada Pasmanik-Chor, Carine Bouffi, Udi Qimron, Ido Bachelet, Patricia C Fulkerson, Marc E Rothenberg, Ariel Munitz
Eosinophils and their associated cytokines IL-4 and IL-5 are emerging as central orchestrators of the immune-metabolic axis. Herein, we demonstrate that cross-talk between the Ig-superfamily receptor CD300f and IL-5 is a key checkpoint that modifies the ability of eosinophils to regulate metabolic outcomes. Generation of Il5 (Tg) /Cd300f (-/-) mice revealed marked and distinct increases in eosinophil levels and their production of IL-4 in the white and brown adipose tissues. Consequently, Il5 (Tg) /Cd300f (-/-) mice had increased alternatively activated macrophage accumulation in the adipose tissue...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28723568/loss-of-hepatic-mitochondrial-long-chain-fatty-acid-oxidation-confers-resistance-to-diet-induced-obesity-and-glucose-intolerance
#5
Jieun Lee, Joseph Choi, Ebru S Selen Alpergin, Liang Zhao, Thomas Hartung, Susanna Scafidi, Ryan C Riddle, Michael J Wolfgang
The liver has a large capacity for mitochondrial fatty acid β-oxidation, which is critical for systemic metabolic adaptations such as gluconeogenesis and ketogenesis. To understand the role of hepatic fatty acid oxidation in response to a chronic high-fat diet (HFD), we generated mice with a liver-specific deficiency of mitochondrial long-chain fatty acid β-oxidation (Cpt2(L-/-) mice). Paradoxically, Cpt2(L-/-) mice were resistant to HFD-induced obesity and glucose intolerance with an absence of liver damage, although they exhibited serum dyslipidemia, hepatic oxidative stress, and systemic carnitine deficiency...
July 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28717164/glucagon-like-peptide-1-reduces-pancreatic-%C3%AE-cell-mass-through-hypothalamic-neural-pathways-in-high-fat-diet-induced-obese-rats
#6
Hisae Ando, Koro Gotoh, Kansuke Fujiwara, Manabu Anai, Seiichi Chiba, Takayuki Masaki, Tetsuya Kakuma, Hirotaka Shibata
We examined whether glucagon-like peptide-1 (GLP-1) affects β-cell mass and proliferation through neural pathways, from hepatic afferent nerves to pancreatic efferent nerves via the central nervous system, in high-fat diet (HFD)-induced obese rats. The effects of chronic administration of GLP-1 (7-36) and liraglutide, a GLP-1 receptor agonist, on pancreatic morphological alterations, c-fos expression and brain-derived neurotrophic factor (BDNF) content in the hypothalamus, and glucose metabolism were investigated in HFD-induced obese rats that underwent hepatic afferent vagotomy (VgX) and/or pancreatic efferent sympathectomy (SpX)...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28714601/cf-related-diabetes-containing-the-metabolic-miscreant-of-cystic-fibrosis
#7
Amir Moheet, Antoinette Moran
Cystic fibrosis-related diabetes (CFRD) is associated with both an increase in morbidity and mortality in people with cystic fibrosis (CF). With increased screening and improved life expectancy of people with CF, the prevalence of CFRD is expected to rise further. The underlying pathophysiological mechanisms causing glucose intolerance and diabetes in patients with CF are not well understood but both functional and structural abnormalities in islet cells are likely to have key roles. Insulin therapy improves health outcomes in patients with CF...
July 17, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28714504/tartary-buckwheat-flavonoids-ameliorate-high-fructose-induced-insulin-resistance-and-oxidative-stress-associated-with-the-insulin-signaling-and-nrf2-ho-1-pathways-in-mice
#8
Yuanyuan Hu, Zuoxu Hou, Ruokun Yi, Zhongming Wang, Peng Sun, Guijie Li, Xin Zhao, Qiang Wang
The present study was conducted to explore the effects of a purified tartary buckwheat flavonoid fraction (TBF) on insulin resistance and hepatic oxidative stress in mice fed high fructose in drinking water (20%) for 8 weeks. The results indicated that continuous administration of TBF dose-dependently improved the insulin sensitivity and glucose intolerance in high fructose-fed mice. TBF treatment also reversed the reduced level of insulin action on the phosphorylation of insulin receptor substrate-1 (IRS-1), protein kinase B (Akt) and phosphatidylinositol 3-kinase (PI3K), as well as the translocation of glucose transporter type 4 (GLUT4) in the insulin-resistant liver...
July 17, 2017: Food & Function
https://www.readbyqxmd.com/read/28713332/childhood-maltreatment-is-an-independent-risk-factor-for-prediabetic-disturbances-in-glucose-regulation
#9
Li Li, W Timothy Garvey, Barbara A Gower
AIMS: Childhood maltreatment (CM) is shown to be associated with obesity and depression. However, the relationship of CM to prediabetic state is much less studied. We tested the hypothesis that CM increases the risk for prediabetic state due to glucose intolerance, reduced insulin sensitivity, and beta cell function. METHODS: Oral glucose tolerance test (OGTT)-derived metabolic parameters of glucose tolerance, insulin sensitivity, and beta cell function were measured in 121 participants aged 19-60 years...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28710138/disruption-of-lipid-uptake-in-astroglia-exacerbates-diet-induced-obesity
#10
Yuanqing Gao, Clarita Layritz, Beata Legutko, Thomas O Eichmann, Elise Laperrousaz, Valentine S Moullé, Celine Cruciani-Guglielmacci, Christophe Magnan, Serge Luquet, Stephen C Woods, Robert H Eckel, Chun-Xia Yi, Cristina Garcia-Caceres, Matthias H Tschöp
Neuronal circuits in the brain help to control feeding behavior and systemic metabolism in response to afferent nutrient and hormonal signals. Although astrocytes have historically been assumed to be less relevant for such neuroendocrine control, we asked whether lipid uptake via lipoprotein lipase (LPL) in astrocytes is required for the central regulation of energy homeostasis. Ex vivo studies with hypothalamic-derived astrocytes showed that LPL expression is up-regulated by oleic acid; whereas it is decreased in response to palmitic acid or triglyceride...
July 14, 2017: Diabetes
https://www.readbyqxmd.com/read/28706484/alantolactone-improves-prolonged-exposure-of-interleukin-6-induced-skeletal-muscle-inflammation-associated-glucose-intolerance-and-insulin-resistance
#11
Minjee Kim, Kwangho Song, Yeong Shik Kim
The pro-inflammatory cytokine, Interleukin-6 (IL-6), has been proposed to be one of the mediators that link chronic inflammation to glucose intolerance and insulin resistance. Many studies have demonstrated the effects of IL-6 on insulin action in the skeletal muscle. However, few studies have investigated the effect of long-term treatment of IL-6, leading to glucose intolerance and insulin resistance. In the present study, we observed protective effects of alantolactone, a sesquiterpene lactone isolated from Inula helenium against glucose intolerance and insulin resistance induced by prolonged exposure of IL-6...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28705835/transendothelial-movement-of-adiponectin-is-restricted-by-glucocorticoids
#12
Thanh Q Dang, Nanyoung Yoon, Helen Chasiotis, Emily C Dunford, Qilong Feng, Pingnian He, Michael C Riddell, Scott P Kelly, Gary Sweeney
Altered permeability of the endothelial barrier in a variety of tissues has implications both in disease pathogenesis and treatment. Glucocorticoids are potent mediators of endothelial permeability, and this forms the basis for their heavily prescribed use as medications to treat ocular disease. However, the effect of glucocorticoids on endothelial barriers elsewhere in the body is less well studied. Here, we investigated glucocorticoid-mediated changes in endothelial flux of Adiponectin (Ad), a hormone with a critical role in diabetes...
August 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28701693/transcription-factor-hlx-controls-a-systematic-switch-from-white-to-brown-fat-through-prdm16-mediated-co-activation
#13
Lei Huang, Dongning Pan, Qingbo Chen, Lihua J Zhu, Jianhong Ou, Martin Wabitsch, Yong-Xu Wang
Browning of subcutaneous white fat (iWAT) involves several reprograming events, but the underlying mechanisms are incompletely understood. Here we show that the transcription factor Hlx is selectively expressed in brown adipose tissue (BAT) and iWAT, and is translationally upregulated by β3-adrenergic signaling-mediated suppression of the translational inhibitor 4E-BP1. Hlx interacts with and is co-activated by Prdm16 to control BAT-selective gene expression and mitochondrial biogenesis. Hlx heterozygous knockout mice have defects in brown-like adipocyte formation in iWAT, and develop glucose intolerance and high fat-induced hepatic steatosis...
July 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/28699482/non-diabetic-glucose-levels-and-cancer-mortality-a-literature-review
#14
Eiichi Kakehi, Kazuhiko Kotani, Takashi Nakamura, Taro Takeshima, Eiji Kajii
BACKGROUND: Although diabetes mellitus is a risk factor for cancer, the relationship of an increased glucose concentration at a non-diabetic glucose level with cancer mortality is yet to be determined. OBJECTIVE: To observe whether an increased glucose concentration and/or glucose intolerance at the non-diabetic glucose level can predict cancer mortality. METHODS: Population-based prospective cohort studies evaluating cancer mortality at the non-diabetic level (defined as fasting plasma glucose <7...
July 11, 2017: Current Diabetes Reviews
https://www.readbyqxmd.com/read/28688111/vasopressin-and-metabolic-disorders-translation-from-experimental-models-to-clinical-use
#15
Kazuaki Nakamura, Gilberto Velho, Nadine Bouby
Vasopressin has many physiological actions in addition to its well-defined role in the control of fluid homeostasis and urine concentration. An increasing body of evidence suggests that the vasopressin-hydration axis plays a role in glucose homeostasis. This review summarizes the knowledge accumulated over the last decades about the influence of vasopressin in the short-term regulation of glycemia. It describes the possible role of this hormone through activation of V1a and V1b receptors on liver and pancreas functions and on the hypothalamic-pituitary-adrenal axis...
July 8, 2017: Journal of Internal Medicine
https://www.readbyqxmd.com/read/28687198/neu-p11-a-novel-mt1-mt2-agonist-reverses-diabetes-by-suppressing-the-hypothalamic-pituitary-adrenal-axis-in-rats
#16
Jun Zhou, Jin Zhang, XiaoHong Luo, MaoXing Li, Ying Yue, Moshe Laudon, ZhengPing Jia, RuXue Zhang
Excessive glucocorticoid (GC) in type 2 diabetes mellitus (T2DM) reduces insulin sensitivity, impairs β-cell function, increases gluconeogenesis and glycogenolysis, impairs glucose uptake and metabolism, and reduces the insulinotropic effects of glucagon-like peptide 1. Melatonin, which serves as a physiological regulator of the hypothalamic-pituitary-adrenal (HPA) axis, has been suggested to have anti-diabetic effects. The objective of the present study was to investigate the effect of the MT1/MT2 melatonin agonist Neu-P11 on glucose and lipid metabolism in T2DM rats induced by a high fat diet combined with low doses of streptozotocin...
July 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28685672/micrornas-mediated-mmp-regulation-current-diagnostic-and-therapeutic-strategies-for-metabolic-syndrome
#17
Sharad Saxena, Aditi Jain, Vibha Rani
Metabolic syndrome (MS) is a global socioeconomic problem rapidly progressing in accordance with increasing body mass index (BMI) and age. It is a consortium of risk factors, such as dyslipidaemia, insulin resistance, leptin resistance, reduced adiponectin, glucose intolerance, hyperglycemia, and hypertension. Collectively, these factors accelerate the onset of type 2 diabetes mellitus, cardiovascular disease, stroke, and certain cancers such as breast, liver pancreatic, and colon cancer. Extracellular matrix (ECM) and basement membrane remodeling play a central role during pathogenesis of MS as they regulate diverse cell functions including proliferation, differentiation, and migration...
July 7, 2017: Current Gene Therapy
https://www.readbyqxmd.com/read/28684145/glp-1-receptor-agonist-liraglutide-ameliorates-hepatosteatosis-induced-by-anti-cd3-antibody-in-female-mice
#18
Arata Itoh, Junichiro Irie, Hirotsune Tagawa, Yukie Kusumoto, Mari Kato, Nana Kobayashi, Kumiko Tanaka, Rieko Kikuchi, Masataka Fujita, Yuya Nakajima, Yuehong Wu, Satoru Yamada, Toshihide Kawai, William M Ridgway, Hiroshi Itoh
AIMS: Hepatosteatosis is mainly induced by obesity and metabolic disorders, but various medications also induce hepatosteatosis. The administration of anti-CD3 antibody was shown to induce hepatosteatosis, but changes in lipid and glucose metabolism remain unclear. We investigated the mechanism of hepatosteatosis induced by anti-CD3 antibody and the effects of glucagon-like peptide-1 (GLP-1) receptor agonist that was recently shown to affect immune function in metabolic disorders. METHODS: Anti-CD3 antibody was administered to female BALB/c and C...
June 1, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28680065/nopal-opuntia-ficus-indica-protects-from-metabolic-endotoxemia-by-modifying-gut-microbiota-in-obese-rats-fed-high-fat-sucrose-diet
#19
Mónica Sánchez-Tapia, Miriam Aguilar-López, Claudia Pérez-Cruz, Edgar Pichardo-Ontiveros, Mei Wang, Sharon M Donovan, Armando R Tovar, Nimbe Torres
Current efforts are directed to reducing the gut dysbiosis and inflammation produced by obesity. The purpose of this study was to investigate whether consuming nopal, a vegetable rich in dietary fibre, vitamin C, and polyphenols can reduce the metabolic consequences of obesity by modifying the gut microbiota and preventing metabolic endotoxemia in rats fed a high fat and sucrose diet. With this aim, rats were fed a high fat diet with 5% sucrose in the drinking water (HFS) for 7 months and then were fed for 1 month with HFS + 5% nopal (HFS + N)...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28670620/linking-chronic-inflammation-with-cardiovascular-disease-from-normal-aging-to-the-metabolic-syndrome
#20
Angel Lopez-Candales, Paula M Hernández Burgos, Dagmar F Hernandez-Suarez, David Harris
The metabolic syndrome (MetS) is a cluster of clinical disorders including an unhealthy body habitus with a large waistline, dyslipidemia, glucose intolerance and hypertension. It is known that these disorders not only increase the chances of developing type 2 diabetes mellitus (T2DM), but also cardiovascular disease (CVD). Furthermore, the co-occurrence of all these risk factors known as the MetS is linked to pathways sharing common underlying mediators and mechanisms. Though insulin resistance has been considered as the root of the problem to explain the conglomerate of metabolic abnormalities within this syndrome; new evidence points to several pro-inflammatory cytokines, reactive oxygen species and free fatty acid intermediates might play an even greater role in regulating a series of intracellular signaling pathways sustain as well as perpetuate the development of the MetS and its CVD complications...
April 2017: Journal of Nature and Science
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