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https://www.readbyqxmd.com/read/28817716/endothelial-dysfunction-in-renal-arcuate-arteries-of-obese-zucker-rats-the-roles-of-nitric-oxide-endothelium-derived-hyperpolarizing-factors-and-calcium-activated-k-channels
#1
Dandan Yin, Qianchen Wang, Xun Zhou, Ying Li
The roles of nitric oxide (NO), endothelium-derived hyperpolarizing factors (EDHF), and calcium-activated K+ (KCa) channels in diabetes-associated endothelial dysfunction of small renal arteries are not clear. The present study investigated acetylcholine (ACh)-induced vasorelaxation of renal arcuate arteries from obese Zucker (OZ) rats at different diabetes durations, and the relative contribution of NO, EDHF, and KCa channels to the endothelial dysfunction. OZ rats of 7 weeks (prediabetic stage), 12 weeks (early diabetic stage), and 20 weeks (late diabetic stage), and time-matched lean control rats, were studied...
2017: PloS One
https://www.readbyqxmd.com/read/28814950/morinda-citrifolia-l-leaf-extract-prevent-weight-gain-in-sprague-dawley-rats-fed-a-high-fat-diet
#2
Najla Gooda Sahib Jambocus, Amin Ismail, Alfi Khatib, Fawzi Mahomoodally, Nazamid Saari, Muhammad Waseem Mumtaz, Azizah Abdul Hamid
Background: Morinda citrifolia L. is widely used as a folk medicinal food plant to manage a panoply of diseases, though no concrete reports on its potential anti-obesity activity. This study aimed to evaluate the potential of M. citrifolia leaf extracts (MLE60) in the prevention of weight gain in vivo and establish its phytochemical profile. Design: Male Sprague-Dawley rats were divided into groups based on a normal diet (ND) or high fat diet (HFD), with or without MLE60 supplementation (150 and 350 mg/kg body weight) and assessed for any reduction in weight gain...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28814191/maternal-overweight-disrupts-the-sexual-maturation-of-the-offspring
#3
Rocío A Galarza, Eric A Rhon Calderón, Analía E Cortez, Alicia G Faletti
The aims of the present work were to study the effect of maternal overweight and obesity on the ovarian reserve, follicular development, and ovulation of the offspring and to assess whether this maternal condition alters oocyte integrity. To this end, female offspring from rats fed standard (OSD) or cafeteria (OCD) diet were used. Body weight, vaginal opening, and estrous cycle were recorded and ovaries were obtained on the day of the second estrus. In addition, ovarian weight, ovulation rate (measured by the number of oocytes within oviducts), follicular development (determined by histology), and oocyte integrity were examined...
September 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28813474/binge-like-sucrose-consumption-reduces-the-dendritic-length-and-complexity-of-principal-neurons-in-the-adolescent-rat-basolateral-amygdala
#4
Masroor Shariff, Paul Klenowski, Michael Morgan, Omkar Patkar, Erica Mu, Mark Bellingham, Arnauld Belmer, Selena E Bartlett
A compelling body of evidence suggests that the worldwide obesity epidemic is underpinned by excessive sugar consumption, typified by the modern western diet. Furthermore, evidence is beginning to emerge of maladaptive changes in the mesolimbic reward pathway of the brain in relation to excess sugar consumption that highlights the importance of examining this neural circuitry in an attempt to understand and subsequently mitigate the associated morbidities with obesity. While the basolateral amygdala (BLA) has been shown to mediate the reinforcing properties of drugs of abuse, it has also been shown to play an important role in affective and motivated behaviours and has been shown to undergo maladaptive changes in response to drugs of abuse and stress...
2017: PloS One
https://www.readbyqxmd.com/read/28809824/creation-and-transplantation-of-an-adipose-derived-stem-cell-asc-sheet-in-a-diabetic-wound-healing-model
#5
Yuka Kato, Takanori Iwata, Kaoru Washio, Toshiyuki Yoshida, Hozue Kuroda, Shunichi Morikawa, Mariko Hamada, Kazuki Ikura, Nobuyuki Kaibuchi, Masayuki Yamato, Teruo Okano, Yasuko Uchigata
Artificial skin has achieved considerable therapeutic results in clinical practice. However, artificial skin treatments for wounds in diabetic patients with impeded blood flow or with large wounds might be prolonged. Cell-based therapies have appeared as a new technique for the treatment of diabetic ulcers, and cell-sheet engineering has improved the efficacy of cell transplantation. A number of reports have suggested that adipose-derived stem cells (ASCs), a type of mesenchymal stromal cell (MSC), exhibit therapeutic potential due to their relative abundance in adipose tissue and their accessibility for collection when compared to MSCs from other tissues...
August 4, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28808402/role-of-adiantum-philippense-l-on-glucose-uptake-in-isolated-pancreatic-cells-and-inhibition-of-adipocyte-differentiation-in-3t3-l1-cell-line
#6
Tania Paul, Kishori G Apte, Pradeep B Parab, Biswadeep Das
BACKGROUND: Adiantum philippense (AP) is a pteridophyte that shows antihyperglycemic activity in vivo diabetic model, but the mechanism of action is unknown. OBJECTIVE: AP was found to play a pivotal role in minimizing the high blood glucose in alloxan-induced diabetic rats. Simultaneously, it was observed that it could maintain the normal lipid profile even in diabetic condition. To investigate its insulin-like activity along with its inhibitory role on adipocyte differentiation became the objective of our present study...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807765/sglt2-inhibitor-and-dpp-4-inhibitor-improve-brain-function-via-attenuating-mitochondrial-dysfunction-insulin-resistance-inflammation-and-apoptosis-in-hfd-induced-obese-rats
#7
Piangkwan Sa-Nguanmoo, Pongpan Tanajak, Sasiwan Kerdphoo, Thidarat Jaiwongkam, Wasana Pratchayasakul, Nipon Chattipakorn, Siriporn C Chattipakorn
Dipeptidyl peptidase-4 inhibitor (vildagliptin) has been shown to exert beneficial effects on insulin sensitivity and neuroprotection in obese-insulin resistance. Recent studies demonstrated the neuroprotection of the sodium-glucose co-transporter 2 inhibitor (dapagliflozin) in diabetes. However, the comparative effects of both drugs and a combination of two drugs on metabolic dysfunction and brain dysfunction impaired by the obese-insulin resistance have never been investigated. Forty male Wistar rats were divided into two groups, and received either a normal-diet (ND, n=8) or a high-fat diet (HFD, n=32) for 16weeks...
August 11, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28807102/bitter-melon-powder-protects-against-obesity-associated-fatty-liver-disease-by-improving-colonic-microenvironment-in-rats-with-high-fat-diet-induced-obesity
#8
Juan Bai, Ying Zhu, Ying Dong
This study explored how bitter melon powder (BMP) alters the colonic microenvironment during the development of obesity-associated fatty liver in rats. We observed that BMP effectively inhibited the body weight gain and lipid accumulation in the liver, ameliorated glucose intolerance, and increased the colon weight after an 8-week treatment compared to that in the high-fat diet (HFD) group. BMP significantly decreased fecal water toxicity towards HT-29 cells, as revealed by the cell counting kit (CCK)-8 assay results, and the mRNA expression of Toll-like receptor 4 (TLR4) in colon mucosa...
August 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28806968/cardamom-powder-supplementation-prevents-obesity-improves-glucose-intolerance-inflammation-and-oxidative-stress-in-liver-of-high-carbohydrate-high-fat-diet-induced-obese-rats
#9
Md Mizanur Rahman, Mohammad Nazmul Alam, Anayt Ulla, Farzana Akther Sumi, Nusrat Subhan, Trisha Khan, Bishwajit Sikder, Hemayet Hossain, Hasan Mahmud Reza, Md Ashraful Alam
BACKGROUND: Cardamom is a well-known spice in Indian subcontinent, used in culinary and traditional medicine practices since ancient times. The current investigation was untaken to evaluate the potential benefit of cardamom powder supplementation in high carbohydrate high fat (HCHF) diet induced obese rats. METHOD: Male Wistar rats (28 rats) were divided into four different groups such as Control, Control + cardamom, HCHF, HCHF + cardamom. High carbohydrate and high fat (HCHF) diet was prepared in our laboratory...
August 14, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28805979/effects-of-mtor-inhibition-on-cardiac-and-adipose-tissue-pathology-and-glucose-metabolism-in-rats-with-metabolic-syndrome
#10
Ayako Uchinaka, Mamoru Yoneda, Yuichiro Yamada, Toyoaki Murohara, Kohzo Nagata
The mammalian target of rapamycin (mTOR) is a regulator of metabolism and is implicated in pathological conditions such as obesity and diabetes. We aimed to investigate the role of mTOR in obesity. A new animal model of metabolic syndrome (MetS), named DahlS.Z-Lepr(fa) /Lepr(fa) (DS/obese) rats was established previously in our laboratory. In this study, we used this model to evaluate the effects of mTOR inhibition on cardiac and adipose tissue pathology and glucose metabolism. DS/obese rats were treated with the mTOR inhibitor, everolimus, (0...
August 2017: Pharmacology Research & Perspectives
https://www.readbyqxmd.com/read/28804438/green-tea-extract-induces-genes-related-to-browning-of-white-adipose-tissue-and-limits-weight-gain-in-high-energy-diet-fed-rat
#11
Li-Han Chen, Yi-Wen Chien, Chung-Tiang Liang, Ching-Hung Chan, Meng-Han Fan, Hui-Yu Huang
Background: A wealth of research has reported on the anti-obesity effects of green tea extract (GTE). Although browning of white adipose tissue (WAT) has been reported to attenuate obesity, no study has disclosed the effects of GTE on browning in Sprague Dawley rats. Objectives: The aims of the study were to investigate the effects of GTE on anti-obesity and browning, and their underlying mechanisms. Methods: Four groups of rats (n=10/group) were used including a normal diet with vehicle treatment, and a high-energy diet (HED) with vehicle or GTE by oral gavage at 77...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28803984/canagliflozin-potentiates-glp-1-secretion-and-lowers-the-peak-of-gip-secretion-in-rats-fed-a-high-fat-high-sucrose-diet
#12
Tohru Hira, Toshiki Koga, Kazuyo Sasaki, Hiroshi Hara
The glucose-induced secretion of incretins, including glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), is dependent on luminal glucose levels and transport of glucose via the sodium-glucose transporter 1 (SGLT1) in the small intestine. Because GLP-1 and GIP function in decreasing and increasing the body weight, respectively, we aimed to analyze the effect of transient inhibition of SGLT1 by canagliflozin on incretin secretion in an obese rat model. Male Sprague-Dawley rats were maintained on a high-fat high-sucrose diet for 6-7 weeks, and plasma GLP-1 and GIP levels were measured using an oral glucose tolerance test (OGTT)...
August 10, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28802901/effect-of-vertical-sleeve-gastrectomy-on-alcohol-consumption-and-preferences-in-dietary-obese-rats-and-mice-a-plausible-role-for-altered-ghrelin-signaling
#13
Elise R Orellana, Catherine Jamis, Nelli Horvath, Andras Hajnal
Vertical sleeve gastrectomy (VSG) and Roux-en-Y gastric bypass (RYGB) are the most common surgical options for the treatment of obesity and metabolic disorder. Whereas RYGB may result in greater and more durable weight loss, recent clinical and pre-clinical studies in rats have raised concerns that RYGB surgery may increase risk for alcohol use disorder (AUD). In contrast, recent clinical reports suggest a lesser risk for AUD following VSG, although no preclinical studies have been done to confirm that. Therefore, the present study sought to determine the effects of VSG on ethanol intake and preferences in rodent models using protocols similar to those previously used in animal studies for RYGB...
August 9, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28802091/a-cyclic-and-intermittent-very-low-protein-diet-can-have-beneficial-effects-against-advanced-diabetic-nephropathy-in-wistar-fatty-fa-fa-rats-an-animal-model-of-type-2-diabetes-and-obesity
#14
Munehiro Kitada, Yoshio Ogura, Taeko Suzuki, Itaru Monnno, Keizo Kanasaki, Ai Watanabe, Daisuke Koya
A low-protein diet (LPD), particularly, very low-protein diet (VLPD) is expected for reno-protection in advanced chronic kidney disease, including diabetic nephropathy. We previously also demonstrated that a VLPD clearly improved advanced diabetic nephropathy in a type 2 diabetes and obesity rat. However, clinically, an everyday long-term VLPD contributes to poor adherence, which may be related to controvertial results of an LPD on the suppression for diabetic nephropathy, and has nutritional issues, such as sarcopenia or protein-energy wasting...
August 12, 2017: Nephrology
https://www.readbyqxmd.com/read/28800326/intracerebroventricular-streptozotocin-induces-obesity-and-dementia-in-lewis-rats-rat-model-of-dementia-associated-with-obesity
#15
Konstantin Bloch, Irit Gil-Ad, Alexey Vanichkin, Shay Henry Hornfeld, Nickolay Koroukhov, Michal Taler, Pnina Vardi, Abraham Weizman
BACKGROUND: Animal models of dementia associated with metabolic abnormalities play an important role in understanding the bidirectional relationships between these pathologies. Rodent strains develop cognitive dysfunctions without alteration of peripheral metabolism following intracerebroventricular administration of streptozotocin (icv-STZ). OBJECTIVE: We aimed to estimate the effect of icv-STZ on cognitive functions and peripheral metabolism in Lewis rats, which are rarely used for the induction of cognitive abnormalities...
August 8, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28799896/neurosecretory-protein-gl-stimulates-food-intake-de-novo-lipogenesis-and-onset-of-obesity
#16
Eiko Iwakoshi-Ukena, Kenshiro Shikano, Kunihiro Kondo, Shusuke Taniuchi, Megumi Furumitsu, Yuta Ochi, Tsutomu Sasaki, Shiki Okamoto, George E Bentley, Lance J Kriegsfeld, Yasuhiko Minokoshi, Kazuyoshi Ukena
Mechanisms underlying the central regulation of food intake and fat accumulation are not fully understood. We found that neurosecretory protein GL (NPGL), a newly-identified neuropeptide, increased food intake and white adipose tissue (WAT) in rats. NPGL-precursor gene overexpression in the hypothalamus caused increases in food intake, WAT, body mass, and circulating insulin when fed a high calorie diet. Intracerebroventricular administration of NPGL induced de novo lipogenesis in WAT, increased insulin, and it selectively induced carbohydrate intake...
August 11, 2017: ELife
https://www.readbyqxmd.com/read/28794439/maternal-low-intensity-physical-exercise-prevents-obesity-in-offspring-rats-exposed-to-early-overnutrition
#17
Tatiane Aparecida Ribeiro, Laize Peron Tófolo, Isabela Peixoto Martins, Audrei Pavanello, Júlio Cezar de Oliveira, Kelly Valério Prates, Rosiane Aparecida Miranda, Claudinéia Conationi da Silva Franco, Rodrigo Mello Gomes, Flávio Andrade Francisco, Vander Silva Alves, Douglas Lopes de Almeida, Veridiana Mota Moreira, Kesia Palma-Rigo, Elaine Vieira, Gabriel Sergio Fabricio, Marcos Ricardo da Silva Rodrigues, Wilson Rinaldi, Ananda Malta, Paulo Cezar de Freitas Mathias
Low intensity exercise during pregnancy and lactation may create a protective effect against the development of obesity in offspring exposed to overnutrition in early life. To test these hypotheses, pregnant rats were randomly assigned into 2 groups: Sedentary and Exercised, low intensity, on a rodent treadmill at 30% VO2Max /30-minute/session/3x/week throughout pregnancy and the lactation. Male offspring were raised in small litters (SL, 3 pups/dam) and normal litters (NL, 9 pups/dam) as models of early overnutrition and normal feed, respectively...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28793049/possible-mechanisms-involved-in-the-vasorelaxant-effect-produced-by-clobenzorex-in-aortic-segments-of-rats
#18
J Lozano-Cuenca, A González-Hernández, O A López-Canales, J R Villagrana-Zesati, J D Rodríguez-Choreão, R Morín-Zaragoza, E F Castillo-Henkel, J S López-Canales
Clobenzorex is a metabolic precursor of amphetamine indicated for the treatment of obesity. Amphetamines have been involved with cardiovascular side effects such as hypertension and pulmonary arterial hypertension. The aim of the present study was to investigate whether the direct application of 10-9-10-5 M clobenzorex on isolated phenylephrine-precontracted rat aortic rings produces vascular effects, and if so, what mechanisms may be involved. Clobenzorex produced an immediate concentration-dependent vasorelaxant effect at the higher concentrations (10-7...
August 7, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28792545/contribution-of-independent-and-pleiotropic-genetic-effects-in-the-metabolic-syndrome-in-a-hypertensive-rat
#19
Man Chun John Ma, Janette M Pettus, Jessica A Jakoubek, Matthew G Traxler, Karen C Clark, Amanda K Mennie, Anne E Kwitek
Hypertension is a major risk factor for cardiovascular disease, Type 2 diabetes, and end organ failure, and is often found concomitant with disorders characteristic of the Metabolic Syndrome (MetS), including obesity, dyslipidemia, and insulin resistance. While the associated features often occur together, the pathway(s) or mechanism(s) linking hypertension in MetS are not well understood. Previous work determined that genetic variation on rat chromosome 17 (RNO17) contributes to several MetS-defining traits (including hypertension, obesity, and dyslipidemia) in the Lyon Hypertensive (LH) rat, a genetically determined MetS model...
2017: PloS One
https://www.readbyqxmd.com/read/28792489/l-phenylalanine-modulates-gut-hormone-release-and-glucose-tolerance-and-suppresses-food-intake-through-the-calcium-sensing-receptor-in-rodents
#20
A Alamshah, E Spreckley, M Norton, J S Kinsey-Jones, A Amin, A Ramgulam, Y Cao, R Johnson, K Saleh, E Akalestou, Z Malik, N Gonzalez-Abuin, A Jomard, R Amarsi, A Moolla, P R Sargent, G W Gray, S R Bloom, K G Murphy
OBJECTIVE: High-protein diets (HPDs) are associated with greater satiety and weight loss than diets rich in other macronutrients. The exact mechanisms by which HPDs exert their effects are unclear. However, evidence suggests that the sensing of amino acids produced as a result of protein digestion may have a role in appetite regulation and satiety. We investigated the effects of l-phenylalanine (L-Phe) on food intake and glucose homeostasis in rodents. METHODS: We investigated the effects of the aromatic amino-acid and calcium-sensing receptor (CaSR) agonist l-phenylalanine (L-Phe) on food intake and the release of the gastrointestinal (GI) hormones peptide YY (PYY), glucagon-like peptide-1 (GLP-1) and ghrelin in rodents, and the role of the CaSR in mediating these effects in vitro and in vivo...
July 13, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
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