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Obesity and genes

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https://www.readbyqxmd.com/read/28239649/switching-harmful-visceral-fat-to-beneficial-energy-combustion-improves-metabolic-dysfunctions
#1
Xiaoyan Yang, Wenhai Sui, Meng Zhang, Mei Dong, Sharon Lim, Takahiro Seki, Ziheng Guo, Carina Fischer, Huixia Lu, Cheng Zhang, Jianmin Yang, Meng Zhang, Yangang Wang, Caixia Cao, Yanyan Gao, Xingguo Zhao, Meili Sun, Yuping Sun, Rujie Zhuang, Nilesh J Samani, Yun Zhang, Yihai Cao
Visceral fat is considered the genuine and harmful white adipose tissue (WAT) that is associated to development of metabolic disorders, cardiovascular disease, and cancer. Here, we present a new concept to turn the harmful visceral fat into a beneficial energy consumption depot, which is beneficial for improvement of metabolic dysfunctions in obese mice. We show that low temperature-dependent browning of visceral fat caused decreased adipose weight, total body weight, and body mass index, despite increased food intake...
February 23, 2017: JCI Insight
https://www.readbyqxmd.com/read/28239163/association-between-dna-methylation-at-socs3-gene-and-body-mass-index-might-be-due-to-familial-confounding
#2
S Li, E M Wong, M C Southey, J L Hopper
International Journal of Obesity accepted article preview online, 27 February 2017. doi:10.1038/ijo.2017.56.
February 27, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28237985/genetic-variation-in-cd36-is-associated-with-decreased-fat-and-sugar-intake-in-obese-children-and-adolescents
#3
Marina B Pioltine, Maria Edna de Melo, Aritânia Santos, Alisson D Machado, Ariana E Fernandes, Clarissa T Fujiwara, Cintia Cercato, Marcio C Mancini
BACKGROUND/AIMS: Taste is recognized as an important predictor of food choices. Thus, polymorphisms in genes encoding taste receptors may explain the variability in food preference and intake. Here, we aimed to determine whether genetic variation in the CD36 gene affects food intake and risk of obesity. METHODS: A cross-sectional study was conducted with obese Brazilian children and adolescents (n = 466; BMI-for-age z-score [zBMI] 3.29 ± 0.61) and normal-weight children (n = 114; zBMI -0...
February 25, 2017: Journal of Nutrigenetics and Nutrigenomics
https://www.readbyqxmd.com/read/28237857/genetic-association-analysis-of-polymorphisms-in-psd3-gene-with-obesity-type-2-diabetes-and-hdl-cholesterol
#4
Shaoqing Gong, Chun Xu, Liang Wang, Ying Liu, Daniel Owusu, Beth A Bailey, Yujing Li, Kesheng Wang
BACKGROUND: The pleckstrin and Sec7 domain-containing 3 (PSD3) gene has been linked to immune diseases. We examined whether the genetic variants within the PSD3 gene are associated with obesity, type 2 diabetes (T2D), and high-density lipoprotein (HDL) cholesterol level. METHODS: Multiple logistic regression model and linear regression model were used to examine the associations of 259 single nucleotide polymorphisms (SNPs) within the PSD3 gene with obesity and T2D as binary traits, and HDL level as a continuous trait using the Marshfield data, respectively...
February 10, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28236404/petroleum-ether-sub-fraction-of-rosemary-extract-improves-hyperlipidemia-and-insulin-resistance-by-inhibiting-srebps
#5
Zhi-Shen Xie, Ling-Jun Zhong, Xiao-Meng Wan, Meng-Ning Li, Hua Yang, Ping Li, Xiao-Jun Xu
As a culinary and medicinal herb, rosemary is widely used. The present work aimed to investigate the effects of rosemary extracts on metabolic diseases and the underlying mechanisms of action. Liver cells stably expressing SREBP reporter were used to evaluate the inhibitory effects of different fractions of rosemary extracts on SREBP activity. The obese mice induced by Western-type diet were orally administered with rosemary extracts or vehicle for 7 weeks, the plasma and tissue lipids were analyzed. SREBPs and their target genes were measured by quantitative RT-PCR...
October 2016: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28235700/confirmation-that-a-deletion-in-the-pomc-gene-is-associated-with-body-weight-of-labrador-retriever-dogs
#6
M Mankowska, P Krzeminska, M Graczyk, M Switonski
A 14-bp deletion present in the proopiomelanocortin (POMC) gene of Labrador and Flat Coat Retrievers (FCR), but absent in POMC of other breeds, disrupts the β-MSH and β-endorphin coding sequences. This deletion was recently reported as strongly associated with increased body weight and obesity. We searched for this mutation in a cohort of 272 dogs, representing four breeds with a known predisposition to obesity (Labrador and Golden Retrievers, Beagle, and Cocker Spaniel) and, as expected, we found it only in Labradors...
February 16, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28235645/modification-of-the-fatty-acid-composition-of-an-obesogenic-diet-improves-the-maternal-and-placental-metabolic-environment-in-obese-pregnant-mice
#7
Martina Gimpfl, Jan Rozman, Maik Dahlhoff, Raphaela Kübeck, Andreas Blutke, Birgit Rathkolb, Martin Klingenspor, Martin Hrabě de Angelis, Soner Öner-Sieben, Annette Seibt, Adelbert A Roscher, Eckhard Wolf, Regina Ensenauer
Peri-conceptional exposure to maternal obesogenic nutrition is associated with in utero programming of later-life overweight and metabolic disease in the offspring. We aimed to investigate whether dietary intervention with a modified fatty acid quality in an obesogenic high-calorie (HC) diet during the preconception and gestational phases can improve unfavourable effects of an adipogenic maternal environment. In NMRI mice, peri-conceptional and gestational obesity was induced by feeding a HC diet (controls), and they were compared with dams on a fat-modified (Fat-mod) HC diet of the same energy content but enriched with medium-chain fatty acids (MCFAs) and adjusted to a decreased ratio of n-6 to n-3 long-chain polyunsaturated fatty acids (LC-PUFAs)...
February 21, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28235619/suprathreshold-measures-of-taste-perception-in-children-association-with-dietary-quality-and-body-weight
#8
Emma L Feeney, Sinead A O'Brien, Amalia G M Scannell, Anne Markey, Eileen R Gibney
Childhood obesity is an increasing problem in the Western world, and is affected by a multitude of interacting factors. Recent evidence suggests that taste perception may differ between obese and normal weight children. Evidence also suggests that perception of sweet and bitter taste is linked to differential food liking of various foods. To date, most studies have focused on single food items or food groups, rather than an overall view of dietary quality, and mainly on bitterness. Thus it is unclear whether taste perception is associated with dietary quality in children...
February 21, 2017: Appetite
https://www.readbyqxmd.com/read/28235613/impaired-hepatic-lipid-synthesis-from-polyunsaturated-fatty-acids-in-tm6sf2-e167k-variant-carriers-with-nafld
#9
Panu K Luukkonen, You Zhou, P A Nidhina Haridas, Om P Dwivedi, Tuulia Hyötyläinen, Ashfaq Ali, Anne Juuti, Marja Leivonen, Taru Tukiainen, Linda Ahonen, Emma Scott, Jeremy M Palmer, Johanna Arola, Marju Orho-Melander, Petter Vikman, Quentin M Anstee, Vesa M Olkkonen, Matej Orešič, Leif Groop, Hannele Yki-Järvinen
BACKGROUND: Carriers of the transmembrane 6 superfamily member 2 E167K gene variant (TM6SF2(EK/KK)) have decreased expression of the TM6SF2 gene and increased risk of NAFLD and NASH. Unlike common 'obese/metabolic' NAFLD, these subjects lack hypertriglyceridemia and have lower risk of cardiovascular disease. In animals, phosphatidylcholine (PC) deficiency results in a similar phenotype. PCs surround the core of VLDL consisting of triglycerides (TGs) and cholesteryl-esters (CEs). We determined the effect of the TM6SF2 E167K on these lipids in the human liver and serum and on hepatic gene expression and studied the effect of TM6SF2 knockdown on hepatocyte handling of these lipids...
February 21, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28231178/stimulatory-effects-of-cinnamon-extract-cinnamomum-cassia-during-the-initiation-stage-of-3t3-l1-adipocyte-differentiation
#10
Sang Gil Lee, Joanna A Siaw, Hye Won Kang
Cinnamon (Cinnamomum cassia) has an anti-diabetic effect by possibly increasing the lipid storage capacity of white adipocytes; however, this effect remains controversial. The aim of this study was to examine which stage of adipogenesis is critical for the stimulatory effect of cinnamon in adipogenesis using 3T3-L1 cells. Cells were treated with cinnamon extract during three different stages of adipogenesis. We found that genes related to adipogenesis and lipogenesis were enhanced when cinnamon extract was administered during the initiation stage of differentiation but not when administered during the preadipocyte and post stages of differentiation...
December 6, 2016: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28231078/effects-of-aerobic-exercise-training-on-ace-and-adrb2-gene-expression-plasma-angiotensin-ii-level-and-flow-mediated-dilation-a-study-on-obese-postmenopausal-women-with-prehypertension
#11
Noushin Azadpour, Bakhtyar Tartibian, Şükran Nazan Koşar
OBJECTIVE: The purpose of this study is to determine the effect of 10 weeks of moderate-intensity aerobic exercise training (MIET) on blood pressure (BP), angiotensin-converting enzyme (ACE) and β2-adrenergic receptor (ADRB2) gene expression in leukocytes, plasma angiotensin II (Ang II), and flow-mediated dilation (FMD) in obese postmenopausal women (PMW) with prehypertension. METHODS: Twenty-four obese prehypertensive PMW (aged 50-70 y; body mass index ≥30 kg/m) randomly assigned to control (n = 12) and exercise (n = 12) groups...
March 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28230630/update-on-the-22q11-2-deletion-syndrome-and-its-relevance-to-schizophrenia
#12
Lily Van, Erik Boot, Anne S Bassett
PURPOSE OF REVIEW: Schizophrenia occurs in ∼25% of individuals with 22q11.2 deletion syndrome (22q11.2DS), the strongest known molecular genetic risk factor for schizophrenia. This review highlights recent literature in 22q11.2DS as it pertains to psychosis and schizophrenia. RECENT FINDINGS: Advances in noninvasive prenatal testing allow for early detection of 22q11.2DS in utero, whereas premature birth has been shown to be a significant risk factor for development of psychotic illness in 22q11...
February 21, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28230360/capsaicin-reduces-blood-glucose-by-increasing-insulin-levels-and-glycogen-content-better-than-capsiate-in-streptozotocin-induced-diabetic-rats
#13
Shiqi Zhang, Xiaohan Ma, Zhang Lei, Hui Sun, Xiong Liu
Chili peppers exhibit anti-obesity, anti-cancer, anti-diabetic, and pain- and itchiness-relieving effects on animals and humans; these effects are due to capsaicin, which is the main pungent and biologically active component of pepper. Capsiate, a nonpungent capsaicin analogue and is similar to capsaicin in terms of structure and biological activity. In this study, we investigated whether capsaicin and capsiate exhibit the same hypoglycemic effects on rats with type 1 diabetes (T1D). Experimental rats were categorized into four groups: control, model, capsaicin, and capsiate groups...
February 23, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28225860/il-6-tnf-%C3%AE-and-il-10-levels-polymorphisms-and-their-association-with-type-2-diabetes-mellitus-and-obesity-in-brazilian-individuals
#14
Kathryna Fontana Rodrigues, Nathalia Teixeira Pietrani, Adriana Aparecida Bosco, Fernanda Magalhães Freire Campos, Valéria Cristina Sandrim, Karina Braga Gomes
Objective: This study aimed to investigate the association of plasma TNF-α, IL-6, and lL-10 levels and cytokine gene polymorphisms [TNF-α (-308 G→A), IL-6 (-174 C→G) and IL-10 (-1082 A→G, -819 T→C and -592 A→C)] in type 2 diabetes mellitus (T2DM) and obese patients. Subjects and methods: One hundred and two T2DM patients and 62 controls were included in this study. Cytokine plasma levels were measured by the Cytometric Bead Array method. Genotyping was carried out by the polymerase chain reaction...
February 16, 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28224759/genomic-variants-at-20p11-associated-with-body-fat-mass-in-the-european-population
#15
Yu-Fang Pei, Hai-Gang Ren, Lu Liu, Xiao Li, Chen Fang, Yun Huang, Wen-Zhu Hu, Wei-Wen Kong, An-Ping Feng, Xin-Yi You, Wen Zhao, Hui Shen, Qing Tian, Yong-Hong Zhang, Hong-Wen Deng, Lei Zhang
OBJECTIVE: Body fat mass (BFM) is more homogeneous and accurate than body total mass in measuring obesity but has rarely been studied. Aiming to uncover the genetic basis of fat-induced obesity, a genome-wide association meta-analysis of BFM, after adjustment by body lean mass, was performed in the European population. METHODS: Three samples of European ancestry were included in the meta-analysis: the Framingham Heart Study (N = 6,004), the Kansas City osteoporosis study (N = 2,207), and the Omaha osteoporosis study (N = 968)...
February 22, 2017: Obesity
https://www.readbyqxmd.com/read/28223710/high-intensity-aerobic-exercise-improves-both-hepatic-fat-content-and-stiffness-in-sedentary-obese-men-with-nonalcoholic-fatty-liver-disease
#16
Sechang Oh, Rina So, Takashi Shida, Tomoaki Matsuo, Bokun Kim, Kentaro Akiyama, Tomonori Isobe, Yoshikazu Okamoto, Kiyoji Tanaka, Junichi Shoda
We compared the effects of 12-week programs of resistance training (RT), high-intensity interval aerobic training (HIAT), and moderate-intensity continuous aerobic training (MICT). The primary goal was to evaluate the therapeutic effects of the exercise modalities for the management of nonalcoholic fatty liver disease (NAFLD). A total of 61 sedentary obese men with NAFLD were randomized into one of the following exercise regimens (RT, HIAT, or MICT). Hepatic fat content was decreased to a similar extent in the RT, HIAT, and MICT groups (-14...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223291/ctrp7-deletion-attenuates-obesity-linked-glucose-intolerance-adipose-tissue-inflammation-and-hepatic-stress
#17
Pia S Petersen, Xia Lei, Risa M Wolf, Susana Rodriguez, Stefanie Y Tan, Hannah C Little, Michael A Schweitzer, Thomas H Magnuson, Kimberley E Steele, G William Wong
Chronic low-grade inflammation and cellular stress are important contributors to obesity-linked metabolic dysfunction. Here, we uncover an immune-metabolic role for C1q/TNF-related protein 7 (CTRP7), a secretory protein of the C1q family with previously unknown function. In obese humans, circulating CTRP7 levels were markedly elevated and positively correlated with BMI, glucose, insulin, insulin resistance index, hemoglobin A1c, and triglyceride levels. Expression of CTRP7 in liver was also significantly upregulated in obese humans and positively correlated with gluconeogenic genes...
February 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28222755/wd-repeat-protein-wdr13-is-a-novel-transcriptional-regulator-of-c-jun-and-modulates-intestinal-homeostasis-in-mice
#18
Vijay Pratap Singh, Saritha Katta, Satish Kumar
BACKGROUND: WDR13 is a member of the WD repeat protein family and is expressed in several tissues of human and mice. Previous studies in our laboratory showed that the lack of this gene in mice resulted in mild obesity, hyperinsulinemia, enhanced beta cell proliferation and protection from inflammation. However, the molecular mechanism of WDR13 action is not well understood. METHODS: In the present study, we used AOM/DSS to induce colitis-mediated colorectal tumor after establishing expression of Wdr13 gene in colon...
February 21, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28222718/abnormal-epigenetic-changes-during-differentiation-of-human-skeletal-muscle-stem-cells-from-obese-subjects
#19
Cajsa Davegårdh, Christa Broholm, Alexander Perfilyev, Tora Henriksen, Sonia García-Calzón, Lone Peijs, Ninna Schiøler Hansen, Petr Volkov, Rasmus Kjøbsted, Jørgen F P Wojtaszewski, Maria Pedersen, Bente Klarlund Pedersen, Dov B Ballak, Charles A Dinarello, Bas Heinhuis, Leo A B Joosten, Emma Nilsson, Allan Vaag, Camilla Scheele, Charlotte Ling
BACKGROUND: Human skeletal muscle stem cells are important for muscle regeneration. However, the combined genome-wide DNA methylation and expression changes taking place during adult myogenesis have not been described in detail and novel myogenic factors may be discovered. Additionally, obesity is associated with low relative muscle mass and diminished metabolism. Epigenetic alterations taking place during myogenesis might contribute to these defects. METHODS: We used Infinium HumanMethylation450 BeadChip Kit (Illumina) and HumanHT-12 Expression BeadChip (Illumina) to analyze genome-wide DNA methylation and transcription before versus after differentiation of primary human myoblasts from 14 non-obese and 14 obese individuals...
February 22, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28222464/regulation-of-dipeptidyl-peptidase-4-its-substrate-chemokines-and-their-receptors-in-adipose-tissue-of-ob-ob-mice
#20
Jihoon Shin, Atsunori Fukuhara, Toshiharu Onodera, Chieko Yokoyama, Michio Otsuki, Iichiro Shimomura
The physiological function of DPP-4 in proteolytic inactivation of incretins has been well established, however, there is limited information on the expression and the significance of DPP-4 in white adipose tissue with regard to obesity. The objective of the work was to reveal the expression and regulation of DPP-4 in adipocytes and compare the expression and activity of DPP-4 in white adipose tissue and several other organs such as the liver, muscle and kidney. We also investigated the gene expression levels of DPP-4 substrate chemokines, and their receptors in white adipose tissue...
February 21, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
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