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https://www.readbyqxmd.com/read/29138225/androgen-signaling-expands-%C3%AE-cell-mass-in-male-rats-and-%C3%AE-cell-androgen-receptor-is-degraded-under-high-glucose-conditions
#1
Naoki Harada, Yasuhiro Yoda, Yusuke Yotsumoto, Tatsuya Masuda, Yuji Takahashi, Takahiro Katsuki, Kenji Kai, Nobuaki Shiraki, Hiroshi Inui, Ryoichi Yamaji
A deficient pancreatic β-cell mass increases the risk of type 2 diabetes mellitus. Here, we investigated the effects of testosterone on the development of pancreatic β-cell mass in male rats. The β-cell mass of male rats castrated at 6 weeks of age was reduced to ~30% of that of control rats at 16 weeks of age, and castration caused glucose intolerance. Loss of β-cell mass occurred due to decreases in islet density/pancreas and β-cell cluster size. Castration was negatively associated with the number of Ki67-positive β-cells and positively associated with the number of TUNEL-positive β-cells...
November 14, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29138200/assessing-the-consequences-of-gestational-diabetes-mellitus-on-offspring-s-cardiovascular-health-mysweetheart-cohort-study-protocol-switzerland
#2
Stefano Di Bernardo, Yvan Mivelaz, Adina Mihaela Epure, Yvan Vial, Umberto Simeoni, Pascal Bovet, Sandrine Estoppey Younes, Arnaud Chiolero, Nicole Sekarski
INTRODUCTION: Gestational diabetes mellitus (GDM) is a state of glucose intolerance with onset during pregnancy. GDM carries prenatal and perinatal risks as well as long-term risks for the mother and her child. GDM may be involved in the foetal programming of long-term cardiovascular health. However, evidence is sparse and the effect of GDM on cardiovascular health is unknown. To address these issues, we will conduct MySweetHeart Cohort study. The objectives are to assess the effect of GDM on offspring's cardiovascular health early in life by using surrogate markers of cardiovascular disease and atherosclerosis...
November 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/29137145/dietary-pea-fiber-supplementation-improves-glycemia-and-induces-changes-in-the-composition-of-gut-microbiota-serum-short-chain-fatty-acid-profile-and-expression-of-mucins-in-glucose-intolerant-rats
#3
Zohre Hashemi, Janelle Fouhse, Hyun Seun Im, Catherine B Chan, Benjamin P Willing
Several studies have demonstrated the beneficial impact of dried peas and their components on glucose tolerance; however, the role of gut microbiota as a potential mediator is not fully examined. In this study, we investigated the effect of dietary supplementation with raw and cooked pea seed coats (PSC) on glucose tolerance, microbial composition of the gut, select markers of intestinal barrier function, and short chain fatty acid profile in glucose intolerant rats. Male Sprague Dawley rats were fed high fat diet (HFD) for six weeks to induce glucose intolerance, followed by four weeks of feeding PSC-supplemented diets...
November 12, 2017: Nutrients
https://www.readbyqxmd.com/read/29133483/ctage5-deletion-in-pancreatic-%C3%AE-cells-impairs-proinsulin-trafficking-and-insulin-biogenesis-in-mice
#4
Junwan Fan, Yaqing Wang, Liang Liu, Hongsheng Zhang, Feng Zhang, Lei Shi, Mei Yu, Fei Gao, Zhiheng Xu
Proinsulin is synthesized in the endoplasmic reticulum (ER) in pancreatic β cells and transported to the Golgi apparatus for proper processing and secretion into plasma. Defects in insulin biogenesis may cause diabetes. However, the underlying mechanisms for proinsulin transport are still not fully understood. We show that β cell-specific deletion of cTAGE5, also known as Mea6, leads to increased ER stress, reduced insulin biogenesis in the pancreas, and severe glucose intolerance in mice. We reveal that cTAGE5/MEA6 interacts with vesicle membrane soluble N-ethyl-maleimide sensitive factor attachment protein receptor Sec22b...
November 13, 2017: Journal of Cell Biology
https://www.readbyqxmd.com/read/29133460/elevated-hur-in-pancreas-promotes-a-pancreatitis-like-inflammatory-microenvironment-that-facilitates-tumor-development
#5
Weidan Peng, Narumi Furuuchi, Ludmila Aslanukova, Yu-Hung Huang, Samantha Z Brown, Wei Jiang, Sankar Addya, Vikalp Vishwakarma, Erika Peters, Jonathan R Brody, Dan A Dixon, Janet A Sawicki
Human antigen R (ELAVL1, HuR) is perhaps the best-characterized RNA-binding protein. Through its overexpression in various tumor types, HuR promotes post-transcriptional regulation of target genes in multiple core signaling pathways associated with tumor progression. The role of HuR overexpression in pancreatic tumorigenesis is unknown and led us to explore the consequences of HuR overexpression using a novel transgenic mouse model that has a >2-fold elevation of pancreatic HuR expression. Histologically, HuR overexpressing pancreas displays a fibro-inflammatory response and other pathological features characteristic of chronic pancreatitis...
November 13, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/29132732/the-role-of-artificial-and-natural-sweeteners-in-reducing-the-consumption-of-table-sugar-a-narrative-review
#6
REVIEW
Arshag D Mooradian, Meridith Smith, Masaaki Tokuda
The rapid increase in the prevalence of obesity worldwide has been partially attributed to the overconsumption of added sugars. Recent guidelines call for limiting the consumption of simple sugars to less than 10% of daily caloric consumption. High intensity sweeteners are regulated as food additives and include aspartame, acesulfame-k, neotame, saccharin, sucralose, cyclamate and alitame. Steviol glycosides and Luo Han Guo fruit extracts are high intensity sweeteners that are designated as generally recognized as safe (GRAS)...
April 2017: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/29132537/nfil3-is-a-negative-regulator-of-hepatic-gluconeogenesis
#7
Geon Kang, Hye-Sook Han, Seung-Hoi Koo
OBJECTIVE: Nuclear factor interleukin-3 regulated (NFIL3) has been known as an important transcriptional regulator of the development and the differentiation of immune cells. Although expression of NFIL3 is regulated by nutritional cues in the liver, the role of NFIL3 in the glucose metabolism has not been extensively studied. Thus, we wanted to explore the potential role of NFIL3 in the control of hepatic glucose metabolism. MATERIALS/METHODS: Mouse primary hepatocytes were cultured to perform western blot analysis, Q-PCR and chromatin immunoprecipitation assay...
December 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29130708/-association-between-birth-weight-and-cardiometabolic-risk-factors-in-children-of-bucaramanga-colombia
#8
Edna Magaly Gamboa Delgado, Yully Andrea Rangel-Díaz, Yareni Yunuen Gutiérrez-Gómez
BACKGROUND: Birth weight could be a medium-term risk factor in the development of overweight and obesity and a long-term risk factor of cardio-metabolic diseases. OBJECTIVE: To evaluate the association between birth weight and cardio-metabolic risk factors in children from Bucaramanga, Colombia. METHODS: This cross-sectional study included 1,282 children between five and eleven years of age in Bucaramanga. Dependent variables: arterial hypertension, arterial prehypertension, overweight/obesity, glucose intolerance, insulin resistance, dyslipidemia...
October 24, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/29127476/co-supplementation-of-isomalto-oligosaccharides-potentiates-metabolic-health-benefits-of-polyphenol-rich-cranberry-extract-in-high-fat-diet-fed-mice-via-enhanced-gut-butyrate-production
#9
Dhirendra Pratap Singh, Shashank Singh, Vandana Bijalwan, Vijay Kumar, Pragyanshu Khare, Ritesh Kumar Baboota, Paramdeep Singh, Ravneet Kaur Boparai, Jagdeep Singh, Kanthi Kiran Kondepudi, Kanwaljit Chopra, Mahendra Bishnoi
PURPOSE: Cranberries are a rich source of polyphenolic antioxidants. Purified sugars or artificial sweeteners are being added to cranberry-based food products to mask tartness. Refined sugar and artificial sweeteners intake modulate gut microbiota and result in metabolic complications. We evaluated effects of isomalto-oligosaccharides (IMOs; sweet tasting non-digestible oligosaccharides) with cranberry extract (CRX) on high fat diet (HFD)-induced metabolic alterations in mice. METHODS: Male Swiss albino mice were fed normal chow or HFD (58% fat kcal), and were administered either CRX (200 mg/kg) alone or in combination with IMOs (1 g/kg)...
November 10, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/29127434/brd7-regulates-the-insulin-signaling-pathway-by-increasing-phosphorylation-of-gsk3%C3%AE
#10
Lena Golick, Youngah Han, Yoo Kim, Sang Won Park
Reduced hepatic expression levels of bromodomain-containing protein 7 (BRD7) have been suggested to play a role in the development of glucose intolerance in obesity. However, the molecular mechanism by which BRD7 regulates glucose metabolism has remained unclear. Here, we show that BRD7 increases phosphorylation of glycogen synthase kinase 3β (GSK3β) in response to activation of the insulin receptor-signaling pathway shortly after insulin stimulation and the nutrient-sensing pathway after feeding. BRD7 mediates phosphorylation of GSK3β at the Serine 9 residue and this effect on GSK3β occurs even in the absence of AKT activity...
November 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29124047/adiponectin-concentration-in-gestational-diabetic-women-a-case-control-study
#11
Tanin Mohammadi, Zamzam Paknahad
Gestational diabetes mellitus (GDM) is an impaired fasting glucose condition during pregnancy. Adiponectin is a polypeptide hormone that is extensively released by adipocytes which regulates energy homeostasis and carbohydrate and lipid metabolism. In addition, adiponectin has antidiabetic and anti-inflammatory properties. The aim of our research was to study about the relationship of adiponectin levels to GDM and glucose intolerance. We selected 25 GDM women and 35 healthy pregnant subjects (18-46 years) who were screened between 24 and 28 weeks of gestation based on the result of oral glucose tolerance test (OGTT)...
October 2017: Clinical Nutrition Research
https://www.readbyqxmd.com/read/29121676/naringin-prevents-hiv-1-protease-inhibitors-induced-metabolic-complications-in-vivo
#12
Sanelisiwe Nzuza, Sindiswa Zondi, Peter M O Owira
BACKGROUND: Insulin resistance, glucose intolerance and overt diabetes are known metabolic complications associated with chronic use of HIV-Protease Inhibitors. Naringin is a grapefruit-derived flavonoid with anti-diabetic, anti-dyslipidemia, anti-inflammatory and anti-oxidant activities. OBJECTIVES: The study investigated the protective effects of naringin on glucose intolerance and impaired insulin secretion and signaling in vivo. METHODS: Male Wistar rats were divided into six groups (n = 6) and were daily orally treated with distilled water {3...
2017: PloS One
https://www.readbyqxmd.com/read/29118817/maternal-high-fat-diet-impairs-glucose-metabolism-%C3%AE-cell-function-and-proliferation-in-the-second-generation-of-offspring-rats
#13
Yan-Hong Huang, Ting-Ting Ye, Chong-Xiao Liu, Lei Wang, Yuan-Wen Chen, Yan Dong
Background: This study aimed to assess the impact of perinatal high-fat (HF) diet in female Sprague-Dawley rats (F0) on glucose metabolism and islet function in their early life of second-generation of offspring (F2). Methods: F0 rats were fed with a standard chow (SC) or HF diet for 8 weeks before mating, up to termination of lactation for their first-generation of offspring (F1-SC and F1-HF). F1 females were mated with normal males at the age of week 11, and producing F2 offspring (F2-SC, F2-HF)...
2017: Nutrition & Metabolism
https://www.readbyqxmd.com/read/29118024/arsenic-exposure-induces-glucose-intolerance-and-alters-global-energy-metabolism
#14
Andrew G Kirkley, Christopher M Carmean, Daniel Ruiz, Honggang Ye, Shane M Regnier, Ananta Poudel, Manami Hara, Wakanene Kamau, Daniel N Johnson, Austin A Roberts, Patrick J Parsons, Susumu Seino, Robert Michael Sargis
Environmental pollutants acting as endocrine disrupting chemicals (EDCs) are recognized as potential contributors to metabolic disease pathogenesis. One such pollutant, arsenic, contaminates the drinking water of approximately 100 million people globally and has been associated with insulin resistance and diabetes in epidemiological studies. Despite these observations, the precise metabolic derangements induced by arsenic remain incompletely characterized. In the present study, arsenic's impact on in vivo metabolic physiology was examined in 8 week old male C57BL/6J mice exposed to 50 mg/L inorganic arsenite in their drinking water for 8 weeks...
November 8, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29117620/the-effects-of-a-modified-high-carbohydrate-high-fat-diet-on-metabolic-syndrome-parameters-in-male-rats
#15
Sok Kuan Wong, Kok-Yong Chin, Farihah Hj Suhaimi, Fairus Ahmad, Soelaiman Ima-Nirwana
Metabolic syndrome is a cluster of metabolic abnormalities including central obesity, hyperglycemia, hypertension, and dyslipidemia. A previous study has established that high-carbohydrate high-fat diet (HCHF) can induce MetS in rats. In this study, we modified components of the diet so that it resembled the diet of Southeast Asians. This study aimed to determine the effects of this modified HCHF diet on metabolic parameters in rats. Male Wistar rats (n=14) were randomised into two groups. The normal group was given standard rat chow...
November 8, 2017: Experimental and Clinical Endocrinology & Diabetes
https://www.readbyqxmd.com/read/29117558/dietary-uncoupling-of-gut-microbiota-and-energy-harvesting-from-obesity-and-glucose-tolerance-in-mice
#16
Matthew J Dalby, Alexander W Ross, Alan W Walker, Peter J Morgan
Evidence suggests that altered gut microbiota composition may be involved in the development of obesity. Studies using mice made obese with refined high-fat diets have supported this; however, these have commonly used chow as a control diet, introducing confounding factors from differences in dietary composition that have a key role in shaping microbiota composition. We compared the effects of feeding a refined high-fat diet with those of feeding either a refined low-fat diet or a chow diet on gut microbiota composition and host physiology...
November 7, 2017: Cell Reports
https://www.readbyqxmd.com/read/29116626/unclassified-hepatocellular-adenoma-in-a-middle-aged-woman-with-glucose-intolerance
#17
Kumi Ozaki, Kenichi Harada, Toru Yamamoto, Hiroyuki Aoyagi, Yasuharu Kaizaki, Jun Yoshikawa
The patient was a 43-year-old woman with obesity (body mass index: 29.1) and glucose intolerance who was not taking oral contraceptives. An ultrasound showed a hypoechoic hepatic mass. Dynamic contrast-enhanced computed tomography revealed a lesion in segment 6 that showed homogeneous and slight-to-moderate enhancement in the arterial phase with persistent enhancement during the portal and equilibrium phases. On magnetic resonance (MR) imaging, the lesion demonstrated hyperintensity on T2- and diffusion-weighted images and hypointensity in the hepatobiliary phase of gadoxetic-acid-enhanced MR imaging...
November 7, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/29115018/relationship-between-exercise-capacity-and-glucose-tolerance-in-cystic-fibrosis
#18
Karla Foster, Guixia Huang, Nanhua Zhang, Joseph Crisalli, Barbara Chini, Raouf Amin, Deborah Elder
BACKGROUND: Improved exercise capacity (EC) and normal glucose tolerance (NGT) are independently associated with favorable outcomes in CF, however, little information on this relationship exists in patients with CF. METHODS: Cardiopulmonary exercise tests, oral glucose tolerance tests (OGTT), and HbA1c values measured within a 12-month period were evaluated on 83 pediatric patients diagnosed with CF. Patients were categorized as having NGT, abnormal glucose tolerance (AGT), or CF-related diabetes (CFRD)...
November 8, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29113787/nox4-genetic-inhibition-in-experimental-hypertension-and-metabolic-syndrome
#19
Ghina Bouabout, Estelle Ayme-Dietrich, Hugues Jacob, Marie-France Champy, Marie-Christine Birling, Guillaume Pavlovic, Lola Madeira, Lahcen El Fertak, Benoit Petit-Demoulière, Tania Sorg, Yann Herault, John Mudgett, Laurent Monassier
BACKGROUND: Metabolic syndrome is a combination of symptoms including obesity, dyslipidaemia, glucose intolerance and hypertension. Oxidative stress appears to be a pathophysiological factor that links these signs and encourages progression towards heart failure and diabetes. Nox4 is a hydrogen peroxide nicotinamide adenine dinucleotide phosphate (NADPH) oxidase isoform - found in various cardiovascular cells and tissues, but also in tissues such as the liver - which is involved in glucose and lipid homeostasis...
November 4, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/29112786/circulating-b-type-natriuretic-peptide-in-women-with-and-without-recent-gestational-diabetes-the-impact-of-current-glucose-intolerance
#20
Leanne R De Souza, Chang Ye, Anthony J Hanley, Philip W Connelly, Mathew Sermer, Bernard Zinman, Ravi Retnakaran
CONTEXT: Circulating B-type natriuretic peptide, as measured by the N-terminal fragment of its prohormone (NT-proBNP), is inversely associated with incident type 2 diabetes (T2DM) but positively related to future cardiovascular disease (CVD). Recognizing that gestational diabetes (GDM) identifies women at future risk for both T2DM and CVD, we sought to determine whether gestational glucose tolerance relates to NT-proBNP in the years after delivery. DESIGN/PATIENTS/MEASUREMENTS: Three-hundred-and-forty women underwent a glucose challenge test (GCT) and an oral glucose tolerance test (OGTT) in pregnancy, yielding 4 gestational glucose tolerance groups: GDM (n=105); gestational impaired glucose tolerance (n=59); abnormal GCT with a normal OGTT (n=98); and normal GCT with normal OGTT (n=75)...
November 7, 2017: Clinical Endocrinology
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