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Obesity and genes

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https://www.readbyqxmd.com/read/28822994/glucagon-like-peptide-1-receptor-agonist-stimulates-mitochondrial-bioenergetics-in-human-adipocytes
#1
Joanna Góralska, Agnieszka Śliwa, Anna Gruca, Urszula Raźny, Monika Chojnacka, Anna Polus, Bogdan Solnica, Małgorzata Malczewska-Malec
Glucagon-like peptide 1 receptor agonists (GLP-1RAs) are relatively new pharmacological agents used to normalize glucose level in type 2 diabetes. Recently, GLP-1RAs have been approved for the treatment of obesity to reduce body weight in non-diabetic patients. The extra-pancre-atic effects of GLP-1RAs, as well as their molecular mechanism of action, are still poorly understood. Thus this study was aimed to verify the hypothesis that the mechanism of action of the GLP-1RAs involves mitochondria and that GLP-1RAs administration can improve mitochondrial functions...
August 19, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28821663/agrp-neurons-can-increase-food-intake-during-conditions-of-appetite-suppression-and-inhibit-anorexigenic-parabrachial-neurons
#2
Rachel A Essner, Alison G Smith, Adam A Jamnik, Anna R Ryba, Zoe D Trutner, Matthew E Carter
To maintain energy homeostasis, orexigenic (appetite-inducing) and anorexigenic (appetite suppressing) brain systems functionally interact to regulate food intake. Within the hypothalamus, neurons that express agouti-related protein (AgRP) sense orexigenic factors and orchestrate an increase in food-seeking behavior. In contrast, calcitonin gene-related peptide (CGRP)-expressing neurons in the parabrachial nucleus (PBN) suppress feeding. PBN CGRP neurons become active in response to anorexigenic hormones released following a meal, including amylin, secreted by the pancreas, and cholecystokinin (CCK), secreted by the small intestine...
August 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821567/chronic-spinal-cord-changes-in-a-high-fat-diet-fed-male-rat-model-of-thoracic-spinal-contusion
#3
Redin A Spann, William J Lawson, Raymond J Grill, Michael R Garrett, Bernadette E Grayson
Individuals that suffer injury to the spinal cord can result in long-term, debilitating sequelae. Spinal cord injured patients have increased risk for the development of metabolic disease which can further hinder the effectiveness of treatments to rehabilitate the cord and improve quality of life. In the present study, we sought to understand the impact of high-fat diet induced obesity on spinal cord injury (SCI) by examining transcriptome changes in the area of the injury and rostral and caudal to site of damage 12 weeks after injury...
August 18, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28821417/single-species-versus-dual-species-probiotic-supplementation-as-an-emerging-therapeutic-strategy-for-obesity
#4
G Karimi, R Jamaluddin, N Mohtarrudin, Z Ahmad, H Khazaai, M Parvaneh
BACKGROUND AND AIM: Recent studies have reported beneficial effects of specific probiotics on obesity. However, the difference in the anti-obesity effects of probiotics as single species and dual species is still uncertain. Therefore, we aimed to compare the efficacy of single and dual species of bacteria on markers of obesity in high-fat diet-induced obese rats. METHODS AND RESULTS: A total of 40 male Sprague-Dawley rats were assigned to one of five groups of varying diets as follows: standard diet, high fat diet (HFD), HFD supplemented with Lactobacillus casei strain Shirota, HFD supplemented with Bifidobacterium longum and HFD supplemented with a mixture of these two bacterial species...
July 8, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28821316/obesity-and-fatty-liver-are-prevented-by-inhibition-of-the-aryl-hydrocarbon-receptor-in-both-female-and-male-mice
#5
Benjamin J Moyer, Itzel Y Rojas, Joanna S Kerley-Hamilton, Krishnamurthy V Nemani, Heidi W Trask, Carol S Ringelberg, Barjor Gimi, Eugene Demidenko, Craig R Tomlinson
Inhibition of the aryl hydrocarbon receptor (AHR) prevents Western diet-induced obesity and fatty liver in C57Bl/6J (B6) male mice. The AHR is a ligand-activated nuclear receptor that regulates genes involved in xenobiotic metabolism and T-cell differentiation. Here, we tested the hypothesis that AHR antagonism would also prevent obesity and fatty liver in female mice and that B6 mice (higher-affinity AHR) and congenic B6.D2 mice (lower-affinity AHR) would differentially respond to AHR inhibition. Female and male adult B6 and B6...
August 2017: Nutrition Research
https://www.readbyqxmd.com/read/28821314/intraventricular-administration-of-tenebrio-molitor-larvae-extract-regulates-food-intake-and-body-weight-in-mice-with-high-fat-diet-induced-obesity
#6
Minchul Seo, Jongwan Kim, Seong-Su Moon, Jae-Sam Hwang, Mi-Ae Kim
We recently reported the in vitro and in vivo antiobesity effects of Tenebrio molitor larvae, a traditional food in many countries, but it remains unknown how the larvae affect appetite regulation in mice with diet-induced obesity. We hypothesized that the extract of T molitor larvae mediates appetite by regulating neuropeptide expression. We investigated T molitor larvae extract's (TME's) effects on anorexigenesis and endoplasmic reticulum (ER) stress-induced orexigenic neuropeptide expression in the hypothalami of obese mice...
August 2017: Nutrition Research
https://www.readbyqxmd.com/read/28820499/choline-supplementation-normalizes-fetal-adiposity-and-reduces-lipogenic-gene-expression-in-a-mouse-model-of-maternal-obesity
#7
Chauntelle Jack-Roberts, Yaelle Joselit, Khatia Nanobashvili, Rachel Bretter, Olga V Malysheva, Marie A Caudill, Anjana Saxena, Kathleen Axen, Ahmed Gomaa, Xinyin Jiang
Maternal obesity increases fetal adiposity which may adversely affect metabolic health of the offspring. Choline regulates lipid metabolism and thus may influence adiposity. This study investigates the effect of maternal choline supplementation on fetal adiposity in a mouse model of maternal obesity. C57BL/6J mice were fed either a high-fat (HF) diet or a control (NF) diet and received either 25 mM choline supplemented (CS) or control untreated (CO) drinking water for 6 weeks before timed-mating and throughout gestation...
August 18, 2017: Nutrients
https://www.readbyqxmd.com/read/28819768/maternal-obesity-is-associated-with-gut-microbial-metabolic-potential-in-offspring-during-infancy
#8
Tomás Cerdó, Alicia Ruiz, Ruy Jáuregui, Hatim Azaryah, Francisco José Torres-Espínola, Luz García-Valdés, M Teresa Segura, Antonio Suárez, Cristina Campoy
Children born to obese mothers are at increased risk for obesity, but the mechanisms behind this association are not fully understood. Our study aimed to investigate differences in the functions encoded by the microbiome of infants at 18 months of age when the transition from early infant-feeding to solid family foods is established. To investigate the impact of maternal prepregnancy body mass index on infants' gut microbiome, faecal samples from infants born to normoweight (n = 21) and obese mothers (n = 18) were analysed by 16S rRNA gene sequencing and a functional-inference-based microbiome analysis...
August 17, 2017: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28819125/inflammation-and-bone-mineral-density-a-mendelian-randomization-study
#9
Jian V Huang, C Mary Schooling
Osteoporosis is a common age-related disorder leading to an increase in osteoporotic fractures and resulting in significant suffering and disability. Inflammation may contribute to osteoporosis, as it does to many other chronic diseases. We examined whether inflammation is etiologically relevant to osteoporosis, assessed from bone mineral density (BMD), as a new potential target of intervention, or whether it is a symptom/biomarker of osteoporosis. We obtained genetic predictors of inflammatory markers from genome-wide association studies and applied them to a large genome wide association study of BMD...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818748/association-of-brain-derived-neurotrophic-factor-gene-polymorphisms-with-body-mass-index-a-systematic-review-and-meta-analysis
#10
REVIEW
Shahab-Aldin Akbarian, Amin Salehi-Abargouei, Makan Pourmasoumi, Roya Kelishadi, Parvaneh Nikpour, Motahar Heidari-Beni
BACKGROUND: Many studies with inconsistent results have assessed the association of Brain-derived neurotrophic factor (BDNF) gene polymorphisms with prevalence of obesity and overweight. This review aims to provide a summary of the literature evaluating the relation between BDNF genotype and body mass index (BMI). METHODS: A systematic search through PubMed, Scopus, Science direct, Ovid and Cochrane was performed. We included observational studies with cross-sectional and case-control design, which investigated relationship between all kinds of BDNF polymorphisms with BMI, as a representative index of obesity and overweight...
August 14, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28818460/the-design-and-synthesis-of-a-novel-compound-of-berberine-and-baicalein-that-inhibits-the-efficacy-of-lipid-accumulation-in-3t3-l1-adipocytes
#11
Mengjiao Hao, Zhuoji Guan, Yan Li, Lixian Liu, Xiao Yuan, Ying Gao, Weimin Li
The combination of berberine and baicalein may have a better therapeutic effect against disease. To explore the combined effect of baicalein and berberine in the treatment of obesity, we designed and synthesized a hybrid compound, and its biological activities were evaluated in 3T3-L1 adipocytes. The structures of the berberine-baicalein (BBS) compounds were confirmed by (1)H NMR, (13)C NMR, ultraviolet spectroscopy and high resolution mass spectrometry (HRMS). The present study showed that the IC50 values of the inhibitory effects of baicalein, berberine and BBS against 3T3-L1 cells were 29...
August 9, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/28816006/cd38-deficiency-suppresses-adipogenesis-and-lipogenesis-in-adipose-tissues-through-activating-sirt1-ppar%C3%AE-signaling-pathway
#12
Ling-Fang Wang, Lian-Jie Miao, Xiao-Nv Wang, Cong-Cong Huang, Yi-Song Qian, Xuan Huang, Xiao-Lei Wang, Wan-Zhu Jin, Guang-Ju Ji, Mingui Fu, Ke-Yu Deng, Hong-Bo Xin
It has been recently reported that CD38 was highly expressed in adipose tissues from obese people and CD38-deficient mice were resistant to high-fat diet (HFD)-induced obesity. However, the role of CD38 in the regulation of adipogenesis and lipogenesis is unknown. In this study, to explore the roles of CD38 in adipogenesis and lipogenesis in vivo and in vitro, obesity models were generated with male CD38(-/-) and WT mice fed with HFD. The adipocyte differentiations were induced with MEFs from WT and CD38(-/-) mice, 3T3-L1 and C3H10T1/2 cells in vitro...
August 16, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28815303/effect-of-barley-supplementation-on-the-fecal-microbiota-caecal-biochemistry-and-key-biomarkers-of-obesity-and-inflammation-in-obese-db-db-mice
#13
Jose F Garcia-Mazcorro, David A Mills, Kevin Murphy, Giuliana Noratto
PURPOSE: Barley is a low-glycemic index grain that can help diabetic and obese patients. The effect of barley intake depends on the host and the associated gut microbiota. This study investigated the effect of barley intake on the fecal microbiota, caecal biochemistry, and key biomarkers of obesity and inflammation. METHODS: Obese db/db mice were fed diets with and without barley during 8 weeks; lean mice were used as lean controls. Fecal microbiota was evaluated using 16S marker gene sequencing in a MiSeq instrument; several markers of caecal biochemistry, obesity, and inflammation were also evaluated using standard techniques...
August 16, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28812581/nfia-co-localizes-with-ppar%C3%AE-and-transcriptionally-controls-the-brown-fat-gene-program
#14
Yuta Hiraike, Hironori Waki, Jing Yu, Masahiro Nakamura, Kana Miyake, Gaku Nagano, Ryo Nakaki, Ken Suzuki, Hirofumi Kobayashi, Shogo Yamamoto, Wei Sun, Tomohisa Aoyama, Yusuke Hirota, Haruya Ohno, Kenji Oki, Masayasu Yoneda, Andrew P White, Yu-Hua Tseng, Aaron M Cypess, Therese J Larsen, Naja Z Jespersen, Camilla Scheele, Shuichi Tsutsumi, Hiroyuki Aburatani, Toshimasa Yamauchi, Takashi Kadowaki
Brown fat dissipates energy as heat and protects against obesity. Here, we identified nuclear factor I-A (NFIA) as a transcriptional regulator of brown fat by a genome-wide open chromatin analysis of murine brown and white fat followed by motif analysis of brown-fat-specific open chromatin regions. NFIA and the master transcriptional regulator of adipogenesis, PPARγ, co-localize at the brown-fat-specific enhancers. Moreover, the binding of NFIA precedes and facilitates the binding of PPARγ, leading to increased chromatin accessibility and active transcription...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28811968/il-32%C3%AE-induced-inflammation-constitutes-a-link-between-obesity-and-colon-cancer
#15
Victoria Catalán, Javier Gómez-Ambrosi, Amaia Rodríguez, Beatriz Ramírez, Victor A Ortega, José Luis Hernández-Lizoain, Jorge Baixauli, Sara Becerril, Fernando Rotellar, Víctor Valentí, Rafael Moncada, Camilo Silva, Javier Salvador, Gema Frühbeck
Growing evidence indicates that adipose tissue inflammation is an important mechanism whereby obesity promotes cancer risk and progression. Since IL-32 is an important inflammatory and remodeling factor in obesity and is also related to colon cancer (CC) development, the aim of this study was to explore whether IL-32 could function as an inflammatory factor in human obesity-associated CC promoting a microenvironment favorable for tumor growth. Samples obtained from 84 subjects [27 lean (LN) and 57 obese (OB)] were used in the study...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28811650/diet-induced-obesity-leads-to-metabolic-dysregulation-in-offspring-via-endoplasmic-reticulum-stress-in-a-sex-specific-manner
#16
J H Park, Y Yoo, M Cho, J Lim, A M Lindroth, Y J Park
BACKGROUND/OBJECTIVES: Exposure to metabolic stress has been suggested to influence the susceptibility to metabolic disorders in offspring according to epidemiological and animal studies. Nevertheless, molecular mechanisms remain unclear. We investigated impacts of diet-induced paternal obesity on metabolic phenotypes in offspring and its underlying molecular mechanism. SUBJECTS/METHODS: Male founder mice (F0), fed with control diet (CD) or high fat diet (HFD), were mated with CD-fed females...
August 16, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28811612/coenzyme-q10-improves-lipid-metabolism-and-ameliorates-obesity-by-regulating-camkii-mediated-pde4-inhibition
#17
Zhe Xu, Jia Huo, Xin Ding, Mu Yang, Lin Li, Jian Dai, Kazunori Hosoe, Hiroshi Kubo, Masayuki Mori, Keiichi Higuchi, Jinko Sawashita
Our recent studies revealed that supplementation with the reduced form of coenzyme Q10 (CoQ10H2) inhibits oxidative stress and slows the process of aging in senescence-accelerated mice. CoQ10H2 inhibits adipocyte differentiation and regulates lipid metabolism. In the present study, we show that dietary supplementation with CoQ10H2 significantly reduced white adipose tissue content and improved the function of brown adipose tissue by regulating expression of lipid metabolism-related factors in KKAy mice, a model of obesity and type 2 diabetes...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811369/obesity-associated-gene-tmem18-has-a-role-in-the-central-control-of-appetite-and-body-weight-regulation
#18
Rachel Larder, M F Michelle Sim, Pawan Gulati, Robin Antrobus, Y C Loraine Tung, Debra Rimmington, Eduard Ayuso, Joseph Polex-Wolf, Brian Y H Lam, Cristina Dias, Darren W Logan, Sam Virtue, Fatima Bosch, Giles S H Yeo, Vladimir Saudek, Stephen O'Rahilly, Anthony P Coll
An intergenic region of human chromosome 2 (2p25.3) harbors genetic variants which are among those most strongly and reproducibly associated with obesity. The gene closest to these variants is TMEM18, although the molecular mechanisms mediating these effects remain entirely unknown. Tmem18 expression in the murine hypothalamic paraventricular nucleus (PVN) was altered by changes in nutritional state. Germline loss of Tmem18 in mice resulted in increased body weight, which was exacerbated by high fat diet and driven by increased food intake...
August 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28810559/identification-of-key-genes-and-pathways-associated-with-obesity-in-children
#19
Ling Li, Guangyu Wang, Ning Li, Haiyan Yu, Jianping Si, Jiwen Wang
The present study aimed to identify potential key genes and pathways in obese children in order to explore possible molecular mechanisms associated with child obesity. The array dataset GSE29718 was downloaded from the Gene Expression Omnibus database. Subcutaneous adipose tissue samples derived from 7 obese children and 8 lean children were selected for the analysis. Differentially expressed genes (DEGs) in samples from obese children compared with those from lean children were analyzed by the limma package...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28809783/role-of-omentin-vaspin-cardiotrophin-1-tweak-and-nov-ccn3-in-obesity-and-diabetes-development
#20
REVIEW
Xavier Escoté, Saioa Gómez-Zorita, Miguel López-Yoldi, Iñaki Milton-Laskibar, Alfredo Fernández-Quintela, J Alfredo Martínez, María J Moreno-Aliaga, María P Portillo
Adipose tissue releases bioactive mediators called adipokines. This review focuses on the effects of omentin, vaspin, cardiotrophin-1, Tumor necrosis factor-like Weak Inducer of Apoptosis (TWEAK) and nephroblastoma overexpressed (NOV/CCN3) on obesity and diabetes. Omentin is produced by the stromal-vascular fraction of visceral adipose tissue. Obesity reduces omentin serum concentrations and adipose tissue secretion in adults and adolescents. This adipokine regulates insulin sensitivity, but its clinical relevance has to be confirmed...
August 15, 2017: International Journal of Molecular Sciences
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