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https://www.readbyqxmd.com/read/29777232/maternal-overnutrition-programs-epigenetic-changes-in-the-regulatory-regions-of-hypothalamic-pomc-in-the-offspring-of-rats
#1
Thanuja Gali Ramamoorthy, Tiffany-Jayne Allen, Alison Davies, Erika Harno, Charlotte Sefton, Christopher Murgatroyd, Anne White
BACKGROUND AND OBJECTIVE: Maternal overnutrition has been implicated in affecting the offspring by programming metabolic disorders such as obesity and diabetes, by mechanisms that are not clearly understood. This study aimed to determine the long-term impact of maternal high-fat (HF) diet feeding on epigenetic changes in the offspring's hypothalamic Pomc gene, coding a key factor in the control of energy balance. Further, it aimed to study the additional effects of postnatal overnutrition on epigenetic programming by maternal nutrition...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29772287/probiotics-and-nutraceuticals-as-a-new-frontier-in-obesity-prevention-and-management
#2
N Kobyliak, T Falalyeyeva, N Boyko, O Tsyryuk, T Beregova, L Ostapchenko
INTRODUCTION: The beneficial interaction between the microbiota and humans is how bacteria contained within the gut 'talk' to the immune system and in this landscape, probiotics and nutraceuticals play a major role. The study aims to determine whether probiotics plus nutraceuticals such as smectite or omega-3 are superior to probiotic alone on the monosodium glutamate (MSG) induced obesity model in rats. METHODS: Totally, 75 rats divided into five groups were included (n=15, in each)...
May 14, 2018: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29772226/potential-role-of-peroxisome-proliferator-activated-receptor-gamma-activation-on-serum-visfatin-and-trace-elements-in-high-fat-diet-induced-type-2-diabetes-mellitus
#3
Arshia Tabassum, Syeda Nuzhat Fatima Zaidi, Kausar Yasmeen, Tabassum Mahboob
AIMS: Electrolytes and trace elements dysregulation play an important role in the progression of obesity and diabetes complications. The present study was designed to evaluate the insulin sensitizing effects of peroxisomes proliferators activated receptor gamma (PPAR-γ) agonist on trace elements in obesity induced type 2 diabetes mellitus and correlate with serum visfatin. MATERIALS AND METHODS: Wistar rats were categorized into five groups. Group I served as control; Group II fed on high fat diet (HFD); Group III fed on HFD and treated with rosiglitazone (3 mg/kg) for 7 days; Group IV were T2DM rats induce by HFD and low dose of streptozotocin (i...
May 14, 2018: Life Sciences
https://www.readbyqxmd.com/read/29769602/computational-identification-and-validation-of-alternative-splicing-in-zsf1-rat-rna-seq-data-a-preclinical-model-for-type-2-diabetic-nephropathy
#4
Chi Zhang, Ken Dower, Baohong Zhang, Robert V Martinez, Lih-Ling Lin, Shanrong Zhao
Obese ZSF1 rats exhibit spontaneous time-dependent diabetic nephropathy and are considered to be a highly relevant animal model of progressive human diabetic kidney disease. We previously identified gene expression changes between disease and control animals across six time points from 12 to 41 weeks. In this study, the same data were analysed at the isoform and exon levels to reveal additional disease mechanisms that may be governed by alternative splicing. Our analyses identified alternative splicing patterns in genes that may be implicated in disease pathogenesis (such as Shc1, Serpinc1, Epb4...
May 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29769123/obesity-impairs-male-fertility-through-long-term-effects-on-spermatogenesis
#5
Yan-Fei Jia, Qian Feng, Zheng-Yan Ge, Ying Guo, Fang Zhou, Kai-Shu Zhang, Xiao-Wei Wang, Wen-Hong Lu, Xiao-Wei Liang, Yi-Qun Gu
OBJECTIVE: This study aimed to investigate the effect and possible underlying mechanisms of high-fat diet-induced obesity on spermatogenesis in male rats. METHODS: A total of 45 male rats were randomly divided into control (n = 15, normal diet) and obesity groups (n = 30, high-fat diet) and were fed for 16 weeks. Body weight and organ indexes were determined after sacrifice. Indicators of reproductive function, including sperm count, sperm motility, apoptosis of spermatogenic cells, and oxidative stress levels, were measured...
May 16, 2018: BMC Urology
https://www.readbyqxmd.com/read/29766441/metabolomic-analysis-and-biochemical-changes-in-the-urine-and-serum-of-streptozotocin-induced-normal-and-obese-diabetic-rats
#6
Ahmed Mediani, Faridah Abas, M Maulidiani, Azliana Abu Bakar Sajak, Alfi Khatib, Chin Ping Tan, Intan Safinar Ismail, Khozirah Shaari, Amin Ismail, N H Lajis
Diabetes mellitus (DM) is a chronic disease that can affect metabolism of glucose and other metabolites. In this study, the normal- and obese-diabetic rats were compared to understand the diabetes disorders of type 1 and 2 diabetes mellitus. This was done by evaluating their urine metabolites using proton nuclear magnetic resonance (1 H NMR)-based metabolomics and comparing with controls at different time points, considering the induction periods of obesity and diabetes. The biochemical parameters of the serum were also investigated...
May 15, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29765172/dietary-sucrose-regulates-the-expression-of-the-cd36-gene-in-hepatic-tissue-of-rats-with-obesity-and-non-alcoholic-fatty-liver-disease-nafld
#7
Rodolfo Quintana Castro, Ida Soto Rodriguez, Rosa A Deschamps Lago, Peter Grube Pagola, Jorge Rodriguez Antolin, Adriana Peres Quintal, Jaime Rivera Rivera, Alfonso Alexander Aguilera
AIM: To evaluate the mRNA expression levels of Cd36 in adipose and hepatic tissues, in rats with NAFLD after the consumption of sucrose for 10 and 20 weeks. METHODS: Twenty Wistar rats, all nearly 21 days old were divided into two experimental groups (NAFLD-10 and NAFLD-20), that received a standard diet (2014 Teklad Global) plus 30% sucrose in their drinking water for 10 and 20 weeks and the control groups (C Groups). Variables such as body weight, food intakes, and serum parameters were measured...
May 15, 2018: Biomedical Papers of the Medical Faculty of the University Palacký, Olomouc, Czechoslovakia
https://www.readbyqxmd.com/read/29764624/hydrolyzed-proteins-from-herring-and-salmon-rest-raw-material-contain-peptide-motifs-with-angiotensin-i-converting-enzyme-inhibitors-and-resulted-in-lower-urine-concentrations-of-protein-cystatin-c-and-glucose-when-fed-to-obese-zucker-fa-fa-rats
#8
Aslaug Drotningsvik, Daniela Maria Pampanin, Rasa Slizyte, Ana Carvajal, Ingmar Høgøy, Tore Remman, Oddrun Anita Gudbrandsen
The use of angiotensin-I converting enzyme (ACE) inhibitors is a common strategy for treating kidney disease. Several amino acid sequences with ACE inhibiting activity are identified in filet and rest raw material from various species of fish, and fish protein hydrolysates could be of interest for possible treatment or prevention of kidney disease. Therefore, we hypothesized that protein hydrolysates from rest raw material from herring and salmon contained ACE inhibiting motifs, and could beneficially affect typical markers for kidney function in an obesity rat model prone to developing renal failure...
April 2018: Nutrition Research
https://www.readbyqxmd.com/read/29763913/intraventricular-injection-of-lkb1-inhibits-the-formation-of-diet-induced-obesity-in-rats-by-activating-the-ampk-pomc-neurons-sympathetic-nervous-system-axis
#9
Pengjiao Xi, Jianying Du, Huimin Liang, Jie Han, Zhaoxia Wu, Haomin Wang, Lu He, Qiming Wang, Haize Ge, Yongmei Li, Jie Xue, Derun Tian
BACKGROUND/AIMS: Obesity is increasingly becoming a major public health problem worldwide. Peripheral LKB1 inhibits white fat generation, but the effect of central LKB1 on diet-induced obesity (DIO) is unknown. Therefore, we examined whether LKB1 over-expression in the hypothalamus can inhibit the development of obesity. METHODS: Adult male Sprague-Dawley rats were anesthetized and placed in a stereotaxic apparatus. LKB1-AAV-EGFP (2.0 × 108 or 2.0 × 1010 vector genomes) or Control-AAV-EGFP (2...
May 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29762854/the-influence-of-palatable-high-energy-diet-in-diet-induced-obesity-pregnant-rats-on-offspring-oxidative-stress-in-liver
#10
J-T Jiang, Y-J Jiang
OBJECTIVE: We established an animal model of diet-induced obesity pregnant rats and their offsprings, and explored the effect of high-energy feeding on oxidative stress in filial rat liver, as well as the underlying mechanism. MATERIALS AND METHODS: Pregnant female Sprague-Dawley (SD) rats were randomly assigned into two groups: control group and palatable high-energy diet (PHED) group. Liver tissues were obtained 12 days after offspring rats were born for further study...
April 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29761750/obesity-disrupts-rhythmic-clock-gene-expression-in-maternal-adipose-tissue-during-rat-pregnancy
#11
Rachael C Crew, Peter J Mark, Brendan J Waddell
Obesity during pregnancy causes numerous maternal and fetal health complications, but the underlying mechanisms remain unclear. Adipose tissue dysfunction in obesity has previously been linked to disruption of the intrinsic adipose clock gene network that is crucial for normal metabolic function. This adipose clock also undergoes major change as part of the maternal metabolic adaptation to pregnancy, but whether this is affected by maternal obesity is unknown. Consequently, in this study we tested the hypothesis that obesity disturbs rhythmic gene expression in maternal adipose tissue across pregnancy...
June 2018: Journal of Biological Rhythms
https://www.readbyqxmd.com/read/29760677/one-week-exposure-to-a-free-choice-high-fat-high-sugar-diet-does-not-interfere-with-the-lipopolysaccharide-induced-acute-phase-response-in-the-hypothalamus-of-male-rats
#12
Evita Belegri, Leslie Eggels, Susanne E la Fleur, Anita Boelen
Obesity has been associated with increased susceptibility to infection in humans and rodents. Obesity is also associated with low-grade hypothalamic inflammation that depends not only on body weight but also on diet. In the present study, we investigated if the bacterial endotoxin [lipopolysaccharide (LPS)]-induced acute phase response is aggravated in rats on a 1-week free-choice high-fat high-sugar (fcHFHS) diet and explained by diet-induced hypothalamic inflammation. Male Wistar rats were on an fcHFHS diet or chow for 1 week and afterwards intraperitoneally injected with LPS or saline...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29760587/the-role-of-adipokines-in-skeletal-muscle-inflammation-and-insulin-sensitivity
#13
REVIEW
Thomas Nicholson, Chris Church, David J Baker, Simon W Jones
Background: There is currently an unmet clinical need to develop better pharmacological treatments to improve glucose handling in Type II Diabetes patients with obesity. To this end, determining the effect of obesity-associated adipokines on skeletal muscle insulin sensitivity has emerged as an important area of drug discovery research. This review draws together the data on the functional role of adipokines on skeletal muscle insulin signalling, highlights several understudied novel adipokines and provides a perspective on the direction of future research...
2018: Journal of Inflammation
https://www.readbyqxmd.com/read/29760351/leptin-aggravates-reflux-esophagitis-by-increasing-tissue-levels-of-macrophage-migration-inhibitory-factor-in-rats
#14
Tsugihiro Murata, Kiyotaka Asanuma, Nobuyuki Ara, Katsunori Iijima, Waku Hatta, Shin Hamada, Naoki Asano, Tomoyuki Koike, Akira Imatani, Atsushi Masamune, Tooru Shimosegawa
Leptin, produced primarily by the adipose tissue, acts as a pro-inflammatory modulator, thereby contributing to the development of obesity-related disease. Although high levels of leptin in the obese are closely related to gastroesophageal reflux disease, the mechanism by which leptin influences esophageal inflammation remains unknown. Macrophage migration inhibitory factor (MIF) is produced by immune cells, such as T lymphocytes and macrophages, and MIF is known to induce the production of tumor necrosis factor α (TNF-α), interleukin 1β (IL-1β) and interleukin 6 (IL-6)...
2018: Tohoku Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29760016/diabetes-induced-cardiomyocyte-passive-stiffening-is-caused-by-impaired-insulin-dependent-titin-modification-and-can-be-modulated-by-neuregulin-1
#15
Anna-Eliane Hopf, Christian Andresen, Sebastian Kötter, Malgorzata Isic, Kamila Ulrich, Senem Sahin, Sabine Bongardt, Wilhelm Roell, Felicitas Drove, Nina Scheerer, Leni Vandekerckhove, Gilles W De Keulenaer, Nazha Hamdani, Wolfgang A Linke, Martina Krüger
<u>Rationale:</u> Increased titin-dependent cardiomyocyte tension is a hallmark of heart failure with preserved ejection fraction (HFpEF) associated with type-2 diabetes mellitus (T2DM). However, the insulin-related signaling pathways that modify titin-based cardiomyocyte tension, thereby contributing to modulation of diastolic function, are largely unknown. <u>Objective:</u> We aimed to determine how impaired insulin signaling affects titin expression and phosphorylation and thus increases passive cardiomyocyte tension, and whether metformin or neuregulin-1 can correct disturbed titin modifications and increased titin-based stiffness...
May 14, 2018: Circulation Research
https://www.readbyqxmd.com/read/29758591/mineralocorticoid-receptor-antagonism-prevents-obesity-induced-cerebral-artery-remodeling-and-reduces-white-matter-injury-in-rats
#16
Paulo Wagner Pires, Jonathon Lee McClain, Sebastian F Hayoz, Anne McLaren Dorrance
Midlife obesity is a risk factor for dementia development. Obesity has also been linked to hyperaldosteronism, and this can be modeled in rats by high fat (HF) feeding from weaning. Aldosterone, or activation of the mineralocorticoid receptor (MR) causes cerebrovascular injury in lean hypertensive rats. We hypothesized that rats fed a HF diet would show inward middle cerebral artery (MCA) remodeling that could be prevented by MR antagonism. We further proposed that the cerebral artery remodeling would be associated with white mater injury...
May 14, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29757972/short-term-soy-protein-isolate-feeding-prevents-liver-steatosis-and-reduces-serum-alt-and-ast-levels-in-obese-female-zucker-rats
#17
Reza Hakkak, Clinton Heath Gauss, Andrea Bell, Soheila Korourian
Non-alcoholic fatty liver disease is a common liver disorder worldwide and is associated with obesity. We investigated effects of obesity and short-term intake of soy protein with isoflavones (SPI) on body weight change, energy intake, liver steatosis, and serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), and leptin levels. Seventeen lean and seventeen obese ( fa / fa ) female Zucker rats were randomly assigned to either casein or SPI diet for 8 weeks. Body weight was recorded twice weekly; feed intake was measured weekly...
May 14, 2018: Biomedicines
https://www.readbyqxmd.com/read/29753886/cocaine-impairs-serial-feature-negative-learning-and-blood-brain-barrier-integrity
#18
Terry Davidson, Sara Hargrave, David Kearns, Matthew Clasen, Sabrina Jones, Alison Wakeford, Camille Sample, Anthony Riley
Previous research has shown that diets high in fat and sugar [a.k.a., Western diets (WD)] can impair performance of rats on hippocampal-dependent learning and memory problems, an effect that is accompanied by selective increases in hippocampal blood brain barrier (BBB) permeability. Based on these types of findings, it has been proposed that overeating of a WD (and its resulting obesity) may be, in part, a consequence of impairments in these anatomical substrates and cognitive processes. Given that drug use (and addiction) represents another behavioral excess, the present experiments assessed if similar outcomes might occur with drug exposure by evaluating the effects of cocaine administration on hippocampal-dependent memory and on the integrity of the BBB...
May 10, 2018: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/29753426/-sardine-purified-proteins-improve-blood-pressure-glycemic-control-anti-atherogenic-metabolic-pathways-and-antioxidant-capacity-in-obese-rats
#19
F Affane, F Bensalah, N I Harrat, H Chekkal, S Louala, M Y Lamri-Senhadji
AIM OF THE STUDY: The effects of sardine by-products (SBy-P) and fillet proteins (SF-P) were compared to casein (Cas) ; these effects were assessed on blood pressure, glycemic control, reverse cholesterol transport, lipid peroxidation and total antioxidant capacity in obese rats. MATERIALS AND METHODS: Eighteen male Wistar rats were subjected for three months, to a high-fat diet. The obese rats were divided into three groups and consumed the same high-fat diet for 28 days after addition of either, 20% SBy-P, SF-P or Cas...
May 9, 2018: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29753311/peritoneal-and-systemic-responses-of-obese-type-ii-diabetic-rats-to-chronic-exposure-to-a-hyperbranched-polyglycerol-based-dialysis-solution
#20
Bo La Han, Qiunong Guan, Irina Chafeeva, Asher A Mendelson, Gerald da Roza, Richard Liggins, Jayachandran N Kizhakkedathu, Caigan Du
Metabolic syndrome (MetS) is commonly observed among peritoneal dialysis (PD) patients, and hyperbranched polyglycerol (HPG) is a promising glucose-sparing osmotic agent for PD. However, the biocompatibility of a HPG-based PD solution (HPG) in subjects with MetS has not been investigated. This study compared the local and systemic effects of a HPG solution with conventional Physioneal (PYS) and Icodextrin (ICO) PD solutions in rats with MetS. Obese type 2 diabetic ZSF1 rats received a daily intraperitoneal injection of PD solutions (10 mL) for 3 months...
May 12, 2018: Basic & Clinical Pharmacology & Toxicology
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