keyword
MENU ▼
Read by QxMD icon Read
search

Obesity rats

keyword
https://www.readbyqxmd.com/read/28335529/effects-of-momordica-charantia-bitter-melon-on-ischemic-diabetic-myocardium
#1
Attila Czompa, Alexandra Gyongyosi, Kitti Szoke, Istvan Bak, Evelin Csepanyi, David D Haines, Arpad Tosaki, Istvan Lekli
Objective: A rat model is here used to test a hypothesis that Momordica charantia (Bitter melon (BM)) extract favorably alters processes in cardiovascular tissue and is systemically relevant to the pathophysiology of type 2 diabetes (T2DM) and related cardiovascular disease. Methods: Male Lean and Zucker Obese (ZO) rats were gavage-treated for six weeks with 400 mg/kg body weight bitter melon (BM) extract suspended in mucin-water vehicle, or with vehicle (Control). Animals were segregated into four treatment groups, 10 animals in each group, according to strain (Lean or ZO) and treatment (Control or BM)...
March 20, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28335515/dehydroepiandrosterone-dhea-feeding-protects-liver-steatosis-in-obese-breast-cancer-rat-model
#2
Reza Hakkak, Andrea Bell, Soheila Korourian
Obesity is a major health problem in the US and globally. Obesity is associated with the risk of cardiovascular disease, type 2 diabetes, cancers, hyperlipidemia, and liver steatosis development. Dehydroepiandrosterone (DHEA) is a dietary supplement used as an anti-obesity supplement. Previously, we reported that DHEA feeding protects 7,12-dimethylbenz(a)anthracene (DMBA)-induced mammary tumors. The objectives of this study were to investigate the effects of obesity and DHEA feeding on liver steatosis, body weight gain, and serum DHEA, DHEA sulfate (DHEA-S), insulin-like growth factor-1 (IGF-1), and insulin-like growth factor binding protein-3 (IGFBP-3) levels...
March 20, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28335423/treatment-with-17%C3%AE-estradiol-reduced-body-weight-and-the-risk-of-cardiovascular-disease-in-a-high-fat-diet-induced-animal-model-of-obesity
#3
Wei-Jen Ting, Chih-Yang Huang, Chong-He Jiang, Yueh-Min Lin, Li-Chin Chung, Chia-Yao Shen, Peiying Pai, Kuan-Ho Lin, Vijaya Padma Viswanadha, Shih-Chieh Liao
Estrogen receptor α (ERα) and estrogen receptor β (ERβ) play important roles in cardiovascular disease (CVD) prevention. Recently, these estrogen receptors were reconsidered as an important treatment target of obesity leading to CVD. In this study, 17β-estradiol (17β-E) replacement therapy applied to high-fat diet-induced obese C57B male mice and ovariectomized (OVX) rats were evaluated, and the protective effects against high-fat diet-induced obesity were assessed in C57B mouse hearts. The results showed that 17β-E treatment activated both ERα and ERβ, and ERβ levels increased in a dose-dependent manner in high-fat diet C57B mouse cardiomyocytes following 17β-E treatment...
March 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28334715/potassium-channel-independent-relaxing-influence-of-adipose-tissue-on-mouse-carotid-artery
#4
Marta Laskowski, Cathrin Andersson, Emilie Eliasson, Veronika Golubinskaya, Holger Nilsson
Since the cardiovascular consequences of obesity reportedly vary in different types of obesity, we investigated the influence of adipose tissue from different locales on the phenylephrine-induced tone of the mouse carotid artery. Vessels were mounted in a Mulvany-Halpern-type wire myograph, and adipose tissue, from the back (brown) or mesenteric or inguinal subcutaneous (white), was placed around the artery. Contractile responses to phenylephrine were not affected by brown adipose tissue but were reduced (p < 0...
March 24, 2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28334508/dietary-fatty-acids-influence-sperm-quality-and-function
#5
A Ferramosca, N Moscatelli, M Di Giacomo, V Zara
Recently, obesity has been linked to male infertility. In animal models the administration of a high-fat diet caused a reduction in sperm quality, by impairing gamete energy metabolism. The aim of this study was to investigate a possible effect of dietary fatty acids supplementation in the modulation of sperm energy metabolism and, in turn, in the improvement of sperm quality in rats fed a high-fat diet. Sexually mature male Sprague-Dawley rats were divided into four groups and fed for 4 weeks a standard diet (control group), a high-fat diet (enriched in 35% of fat and 15% sucrose), a high-fat diet supplemented with 2...
March 23, 2017: Andrology
https://www.readbyqxmd.com/read/28330968/examination-of-carnitine-palmitoyl-transferase-1-abundance-in-white-adipose-tissue-implications-in-obesity-research
#6
Jaycob D Warfel, Bolormaa Vandanmagsar, Olga S Dubuisson, Sydney M Hodgeson, Carrie M Elks, Eric Ravussin, Randall L Mynatt
Carnitine Palmitoyltransferase 1 (CPT1) is essential for the transport of long chain fatty acids into the mitochondria for oxidation. Recently, it was reported that decreased CPT1b mRNA in adipose tissue was a contributing factor for obesity in rats. We therefore closely examined the expression level of Cpt1 in adipose tissue from mice, rats, and humans. Cpt1a is the predominate isoform in adipose tissue from all three species. Rat white adipose tissue has a moderate amount of Cpt1b mRNA, but it is very minor compared to Cpt1b expression in muscle...
March 22, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28328996/diaphragmatic-function-is-enhanced-in-fatty-and-diabetic-fatty-rats
#7
Audrey De Jong, Serge Carreira, Na Na, Aude Carillion, Cheng Jiang, Maud Beuvin, Jean-Marc Lacorte, Dominique Bonnefont-Rousselot, Bruno Riou, Catherine Coirault
BACKGROUND: Obesity is associated with a decrease in mortality in the intensive care unit (ICU) (the "obesity paradox"). We hypothesized that obesity may paradoxically improve diaphragmatic function. METHODS: Diaphragm contractility was prospectively recorded in vitro in adult male Zucker lean (control), fatty, and diabetic fatty rats, at rest, after 12h mechanical ventilation and after fatigue. We analyzed diaphragm morphology, cytokines, and protein expression of the protein kinase signaling pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28327528/anti-obesity-effect-of-bombus-ignitus-queen-glycosaminoglycans-in-rats-on-a-high-fat-diet
#8
Mi Young Ahn, Ban Ji Kim, Ha Jeong Kim, Hyung Joo Yoon, Sang Duck Jee, Jae Sam Hwang, Kun-Koo Park
The mechanism of functional insect glycosaminoglycan (GAG) on obesity caused a high fat diet has not yet been elucidated. Therefore, insect glycosaminoglycans derived from Isaria sinclairii, Bombus ignitus (a type of bumblebee) queen, and Gryllus bimaculatus were purified and investigated as a potential functional food. 14-week old male Wistar rats were fed a high-fat diet (HFD) for 6 weeks. There were five groups that received daily intraperitoneal administration of phosphate buffered saline (PBS, control), GbG (GAG from Gryllus bimaculatus) 10 mg/kg, ISG (GAG from Isaria sinclairii) 10 mg/kg, IQG (GAG from Bombus ignites) 10 mg/kg, or Pravastatin (2 mg/kg)...
March 22, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28325733/overactivation-of-the-endocannabinoid-system-alters-the-anti-lipolytic-action-of-insulin-in-mouse-adipose-tissue
#9
Tania Muller, Laurent Demizieux, Stéphanie Troy-Fioramonti, Joseph Gresti, Jean-Paul Pais de Barros, Hélène Berger, Bruno Vergès, Pascal Degrace
Evidence has accumulated that obesity-related metabolic dysregulation is associated with overactivation of the endocannabinoid system (ECS), which involves cannabinoid receptor 1 (CB1R), in peripheral tissues, including adipose tissue (AT). The functional consequences of CB1R activation on AT metabolism remain unclear. Since excess fat mobilization is considered an important primary event contributing to the onset of insulin resistance, we combined in vivo and in vitro experiments to investigate whether activation of ECS could alter the lipolytic rate...
March 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28324105/thyroid-hormone-dependent-epigenetic-regulation-of-melanocortin-4-receptor-levels-in-female-offspring-of-obese-rats
#10
T Tabachnik, T Kisliouk, A Marco, N Meiri, A Weller
Maternal obesity is a risk factor for offspring obesity. Melanocortin 4 receptor (Mc4r) is one of the mediators of food intake and energy balance. This study examines epigenetic mechanisms underlying altered Mc4r levels in the hypothalamic paraventricular nucleus in offspring of high-fat diet (HFD)-induced obese dams, and aims to elucidate the role of thyroid hormones in epigenetic regulation and tagging of their nucleosome at the Mc4r promoter. Female Wistar rats were fed HFD or chow from weaning through gestation and lactation...
January 9, 2017: Endocrinology
https://www.readbyqxmd.com/read/28324017/a-novel-selective-bombesin-receptor-subtype-3-agonist-promotes-weight-loss-in-male-diet-induced-obese-rats-with-circadian-rhythm-change
#11
Yasunori Nio, Natsu Hotta, Minoru Maruyama, Kenichi Hamagami, Toshimi Nagi, Masaaki Funata, Junichi Sakamoto, Masanori Nakakariya, Nobuyuki Amano, Tomohiro Okawa, Yasuyoshi Arikawa, Shinobu Sasaki, Shoki Okuda, Shizuo Kasai, Yugo Habata, Yasutaka Nagisa
Bombesin receptor subtype 3 (BRS-3) is an orphan G-protein-coupled receptor. Based on the obese phenotype of male BRS-3-deficient mice, BRS-3 has been considered an attractive target for obesity treatment. Here, we developed a novel selective BRS-3 agonist (Compound-A) and evaluated its anti-obesity effects. Compound-A showed anorectic effects and enhanced energy expenditure in diet-induced obese (DIO)-F344 rats. Moreover, repeated oral administration of Compound-A for 7 days resulted in a significant body weight reduction in DIO-F344 rats...
March 16, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323074/an-obesogenic-refined-low-fat-diet-disrupts-attentional-and-behavioral-control-processes-in-a-vigilance-task-in-rats
#12
Aaron P Blaisdell, Traci Biedermann, Eric Sosa, Ava Abuchaei, Neveen Youssef, Sylvie Bradesi
Diets consisting of refined foods (REF) are associated with poor physical (e.g., obesity and diabetes) and mental (e.g., depression) health and impaired cognition. Few animal studies have explored the causal links between diet processing and health. Instead, most studies focus on the role of macronutrients, especially carbohydrate and fat concurrently with how processed are the ingredients. We previously showed that a REF low fat diet (LFD) caused greater adiposity and impaired motivation compared to an unrefined control (CON) diet consisting of similar macronutrient ratios (Blaisdell et al...
March 18, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28323039/pomc-and-npy-mrna-expression-during-development-is-increased-in-rat-offspring-brain-from-mothers-fed-with-a-high-fat-diet
#13
Marianne Orlandini Klein, Harry MacKay, Alexander Edwards, Su-Bin Park, Ana Carolina Inhasz Kiss, Luciano Freitas Felicio, Alfonso Abizaid
Developmental programming is influenced by perinatal nutrition and it has long-lasting impacts on adult metabolism in the offspring. In particular, maternal high fat diet has been associated with increased risk of obesity and metabolic disorders during adulthood in the descendants. These effects may be due to the effects of the high fat diet on the development of the systems that regulate food intake and energy balance in the offspring hypothalamus. The arcuate nucleus (ARC) may be a particularly sensitive region to it as this nucleus contains the POMC and AgRP/NPY neurons that integrate the melanocortin system...
March 18, 2017: International Journal of Developmental Neuroscience
https://www.readbyqxmd.com/read/28322789/high-glucose-impairs-insulin-signaling-via-activation-of-pkr-pathway-in-l6-muscle-cells
#14
Mary Priyanka Udumula, Mangali Suresh Babu, Audesh Bhat, Indu Dhar, Dharmarajan Sriram, Arti Dhar
Double stranded RNA (dsRNA) activated protein kinase R (PKR), a ubiquitously expressed serine/threonine kinase is a key inducer of inflammation, insulin resistance and glucose homeostasis in obesity. Recent studies have demonstrated that PKR can respond to metabolic stress in mice as well as in humans. However the underlying molecular mechanism is not fully understood. The aim of the present study was to examine the effect of high glucose on cultured rat L6 muscle cells and to investigate whether inhibition of PKR could prevent any deleterious effects of high glucose in these cells...
March 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28321131/does-activation-of-midbrain-dopamine-neurons-promote-or-reduce-feeding
#15
L Boekhoudt, T J M Roelofs, J W de Jong, A E de Leeuw, M C M Luijendijk, I G Wolterink-Donselaar, G van der Plasse, R A H Adan
BACKGROUND: Dopamine (DA) signalling in the brain is necessary for feeding behaviour, and alterations in the DA system have been linked to obesity. However, the precise role of DA in the control of food intake remains debated. On the one hand, food reward and motivation are associated with enhanced DA activity. On the other hand, psychostimulant drugs that increase DA signalling suppress food intake. This poses the questions of how endogenous DA neuronal activity regulates feeding, and whether enhancing DA neuronal activity would either promote or reduce food intake...
March 21, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28321032/the-effects-of-prenatal-undernutrition-and-a-high-fat-postnatal-diet-on-central-and-peripheral-orexigenic-and-anorexigenic-factors-in-female-rats
#16
Takeshi Iwasa, Toshiya Matsuzaki, Kiyohito Yano, Altankhuu Tungalagsuvd, Munkhsaikhan Munkhzaya, Yiliyasi Mayila, Akira Kuwahara, Minoru Irahara
Prenatal undernutrition and postnatal overnutrition increase the risk of some peripheral and central metabolic disorders in adulthood. We speculated that disturbances of appetite/metabolic regulatory factors might already have been established in the early stages of life and contribute to obesity later in life. The effects of a high-fat diet on the levels of peripheral and central appetite/metabolic regulatory factors were compared between the offspring of normally nourished dams and those of undernourished dams in the peri-pubertal period...
March 17, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28319852/pterostilbene-a-dimethylated-analog-of-resveratrol-promotes-energy-metabolism-in-obese-rats
#17
Koji Nagao, Tomoyuki Jinnouchi, Shunichi Kai, Teruyoshi Yanagita
Pterostilbene (trans-3,5-dimethoxy-4-hydroxystilbene) is a dimethylated analog of resveratrol and has been reported to exert various pharmacological effects. In this study, we evaluated the effect of pterostilbene on the pathogenesis of obesity and energy metabolism in obese rats. Pterostilbene significantly activates silent mating type information regulation 2 homolog-1 and peroxisome proliferator-activated receptor-alpha in vitro. At 4 weeks a 0.5% pterostilbene diet markedly suppressed the abdominal white adipose tissue (WAT) accumulation in obese rats...
March 8, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28319651/mediterranean-tomato-based-sofrito-protects-against-vascular-alterations-in-obese-zucker-rats-by-preserving-no-bioavailability
#18
Rosalia Rodriguez-Rodriguez, Francesc Jiménez-Altayó, Laia Alsina, Yara Onetti, Jose F de Alvarenga, Carmen Claro, Elena Ogalla, Nuria Casals, Rosa M Lamuela-Raventos
SCOPE: Sofrito, a key component of the Mediterranean diet, provides nutritional interest due to its high content in bioactive compounds from tomato and olive oil, and especially to the lipid matrix in which these compounds are found. In this study, the potential beneficial effects of dietary intake of sofrito on obesity-related vascular alterations were explored in obese Zucker rats. METHODS AND RESULTS: Obese and lean rats were fed a control diet supplemented or not with 2% (w/w) sofrito for 8 weeks...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28315336/streptozotocin-produces-oxidative-stress-inflammation-and-decreases-bdnf-concentrations-to-induce-apoptosis-of-rin5f-cells-and-type-2-diabetes-mellitus-in-wistar-rats
#19
Siresha Bathina, Nanduri Srinivas, Undurti N Das
BACKGROUND: Neurodegenerative disorders, such as deficits in learning, memory and cognition and Alzheimer's disease are associated with diabetes mellitus. Brain-derived neurotrophic factor (BDNF) is a neurotrophic factor and is known to possess anti-obesity, anti-diabetic actions and is believed to have a role in memory and Alzheimer's disease. OBJECTIVE: To investigate whether STZ can reduce BDNF production by rat insulinoma (RIN5F) cells in vitro and decrease BDNF levels in the pancreas, liver and brain in vivo...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28314371/intrauterine-growth-restriction-programs-the-hypothalamus-of-adult-male-rats-integrated-analysis-of-proteomic-and-metabolomic-data
#20
Amanda Paula Pedroso, Adriana Pereira de Souza, Ana Paula Segantine Dornellas, Lila Missae Oyama, Cláudia Maria Oller Nascimento, Gianni Mara Silva Santos, José C Rosa, Ricardo Pimenta Bertolla, Jelena Klawitter, Uwe Christians, Alexandre Keiji Tashima, Eliane Beraldi Ribeiro
Programming of hypothalamic functions regulating energy homeostasis may play a role in intrauterine growth restriction (IUGR)-induced adulthood obesity. The present study investigated the effects of IUGR on the hypothalamus proteome and metabolome of adult rats submitted to 50% protein-energy restriction throughout pregnancy. Proteomic and metabolomic analyzes were performed by data independent acquisition mass spectrometry and multiple reaction monitoring, respectively. At age 4 months, the restricted rats showed elevated adiposity, increased leptin and signs of insulin resistance...
March 17, 2017: Journal of Proteome Research
keyword
keyword
99459
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"