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https://www.readbyqxmd.com/read/29782964/an-in-vitro-approach-for-prioritization-and-evaluation-of-chemical-effects-on-glucocorticoid-receptor-mediated-adipogenesis
#1
Jessica K Hartman, Tyler Beames, Bethany Parks, Daniel Doheny, Gina Song, Alina Efremenko, Miyoung Yoon, Briana Foley, Chad Deisenroth, Patrick D McMullen, Rebecca A Clewell
Rising obesity rates worldwide have socio-economic ramifications. While genetics, diet, and lack of exercise are major contributors to obesity, environmental factors may enhance susceptibility through disruption of hormone homeostasis and metabolic processes. The obesogen hypothesis contends that chemical exposure early in development may enhance adipocyte differentiation, thereby increasing the number of adipocytes and predisposing for obesity and metabolic disease. We previously developed a primary human adipose stem cell (hASC) assay to evaluate the effect of environmental chemicals on PPARG-dependent adipogenesis...
May 18, 2018: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/29781491/oleuropein-and-hydroxytyrosol-rich-extracts-from-olive-leaves-attenuate-liver-injury-and-lipid-metabolism-disturbance-in-bisphenol-a-treated-rats
#2
Asma Mahmoudi, Fatma Hadrich, Ines Feki, Hela Ghorbel, Zouhaier Bouallagui, Rim Marrekchi, Hela Fourati, Sami Sayadi
In the present study, we investigated the protective effects of oleuropein- and hydroxytyrosol-rich extracts obtained from olive leaves against bisphenol A (BPA)-induced hyperlipidemia and liver injury in male rats. For this purpose, four groups of male rats (8 per group) were used: control group (Control), rats treated with BPA, rats treated with both BPA and oleuropein (OLE-BPA), and rats treated with both BPA and hydroxytyrosol (HYT-BPA). After 60 days of treatment, the results obtained using the DXA technique showed that treatment with BPA (10 mg per kg b...
May 21, 2018: Food & Function
https://www.readbyqxmd.com/read/29781079/the-role-of-new-adipokines-in-gestational-diabetes-mellitus-pathogenesis
#3
Radzisław Mierzyński, Elżbieta Poniedziałek-Czajkowska, Dominik Dłuski, Bożena Leszczyńska-Gorzelak
Gestational diabetes mellitus (GDM) is defined as any degree of glucose intolerance with onset or first recognition dur-ing pregnancy. Explanation of the GDM pathogenesis is important due to preventing gestational complications. During pregnancy there are significant changes in maternal metabolism. Many of these changes are influenced by different adi-pokines produced in the placenta and adipose tissue. The exact role of adipokines in the pathogenesis of GDM remains still unknown. Several adipokines have been analysed throughout gestation and their levels have been suggested as biomarkers of maternal-perinatal outcomes...
2018: Ginekologia Polska
https://www.readbyqxmd.com/read/29779969/increased-malondialdehyde-vs-reduced-sirtuin-1-in-relation-with-adiposity-atherogenicity-and-hematological-indices-in-metabolic-syndrome-patients-with-and-without-prediabetes
#4
Samar Abu Rkhaya, Nailya Bulatova, Violet Kasabri, Randa Naffa, Reema Alquoqa
BACKGROUND: Sirtuin 1 (SIRT 1) and malondialdehyde (MDA) were implicated in metabolic syndrome (MetS) and type 2 diabetes mellitus (T2DM) pathophysiology. AIMS AND METHODS: This cross-sectional study aimed to investigate both SIRT 1 and MDA in 30 lean healthy control, 31 normoglycemic MetS subjects and 30 MetS-Pre/T2DM drug naïve. C orrelation studies were established for both biomarkers with adiposity indices [conicity index (CI), waist circumference (WC), weight-to-height (WHtR) ratio, weight-to-hip (WHR) ratio, hip circumference (HC), and body adiposity index (BAI)], hematological indices [red cell distribution width (RDW), mean platelet volume (MPV), platelet-to-lymphcyte ratio (PLR), neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR)] and atherogenicity indices (atherogenicity index of plasma (AIP = log10 TG/HDL-C ratio), TC/HDL-C and LDL-C/HDL-C ratios]...
May 15, 2018: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/29779870/central-adiposity-markers-plasma-lipid-profile-and-cardiometabolic-risk-prediction-in-overweight-obese-individuals
#5
Rocco Barazzoni, Gianluca Gortan Cappellari, Annamaria Semolic, Mario Ius, Michela Zanetti, Antonio Gabrielli, Pierandrea Vinci, Gianfranco Guarnieri, Giorgio Simon
BACKGROUND: Waist circumference (WC) is the currently recommended marker of central fat for cardiometabolic risk screening. Alternative surrogate markers have been recently proposed to better reflect the metabolic impact of central fat accumulation per se, based on WC normalization by height (Weight-to-Height Ratio - WtoH; Body Roundness Index - BRI) or body mass index (BMI) without (A Body Shape Index - ABSI) or with inclusion of plasma triglyceride and HDL-cholesterol concentrations (Visceral Adiposity Index - VAI)...
May 8, 2018: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29777756/peroxiredoxin-5-regulates-adipogenesis-attenuating-oxidative-stress-in-obese-mouse-models-induced-by-a-high-fat-diet
#6
Mi Hye Kim, Sun-Ji Park, Jung-Hak Kim, Jung Bae Seong, Kyung-Min Kim, Hyun Ae Woo, Dong-Seok Lee
Elevated levels of reactive oxygen species (ROS) are a hallmark of obesity. Peroxiredoxin 5 (Prx5), which is a cysteine-dependent peroxidase enzyme, has an intensive ROS scavenging activity because it is located in the cytosol and mitochondria. Therefore, we focused on the role of Prx5 in regulating mitochondrial ROS and adipogenesis. We demonstrated that Prx5 expression was upregulated during adipogenesis and Prx5 overexpression suppressed adipogenesis by regulating cytosolic and mitochondrial ROS generation...
May 16, 2018: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29777704/dietary-mung-bean-protein-reduces-high-fat-diet-induced-weight-gain-by-modulating-host-bile-acid-metabolism-in-a-gut-microbiota-dependent-manner
#7
Akiho Nakatani, Xuan Li, Junki Miyamoto, Miki Igarashi, Hitoshi Watanabe, Asuka Sutou, Keita Watanabe, Takayasu Motoyama, Nobuhiko Tachibana, Mitsutaka Kohno, Hiroshi Inoue, Ikuo Kimura
The 8-globulin-rich mung bean protein (MPI) suppresses hepatic lipogenesis in rodent models and reduces fasting plasma glucose and insulin levels in obese adults. However, its effects on mitigating high fat diet (HFD)-induced obesity and the mechanism underlying these effects remain to be elucidated. Herein, we examined the metabolic phenotype, intestinal bile acid (BA) pool, and gut microbiota of conventionally raised (CONV-R) male C57BL/6 mice and germ-free (GF) mice that were randomized to receive either regular HFD or HFD containing mung bean protein isolate (MPI) instead of the dairy protein present in regular HFD...
May 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29777237/dna-methylation-variant-b-vitamins-intake-and-longitudinal-change-in-body-mass-index
#8
Xiang Li, Tiange Wang, Min Zhao, Tao Huang, Dianjianyi Sun, Liyuan Han, Hoirun Nisa, Xiaoyun Shang, Yoriko Heianza, Lu Qi
BACKGROUND: Growing evidence has implicated DNA methylation (DNAm) in the regulation of body adiposity; a recent epigenome-wide association study (EWAS) identified a genetic variant determining DNAm at the SREBF1 gene that affected body mass index (BMI). OBJECTIVE: In the present study, we tested interactions between DNAm variant rs752579 and methylation metabolism-related B-vitamins (folate, vitamin B2 , vitamin B6 , and vitamin B12 ) on longitudinal change in BMI in the Women's Health Initiative Memory Study (WHIMS)...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29777235/response-of-skeletal-muscle-ucp2-expression-during-metabolic-adaptation-to-caloric-restriction
#9
Sascha Heinitz, Paolo Piaggi, Shanshan Yang, Susan Bonfiglio, Jason Steel, Jonathan Krakoff, Susanne B Votruba
BACKGROUND/OBJECTIVES: Spendthrift vs. thrifty individuals expend more energy and experience greater weight loss during caloric restriction (CR). Adaptive mechanisms in skeletal muscle, adipose tissue, and on hormone level modulate energy expenditure (EE) during weight loss. Metabolic mechanisms underlying the variability in EE during CR are unclear. The present study explored whether during long-term CR (i) gene expression changes in skeletal muscle and adipose tissue relate with the individual EE response and weight loss, and (ii) altered catecholamine and FGF21-concentrations are associated with measures of metabolic adaptation...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29777232/maternal-overnutrition-programs-epigenetic-changes-in-the-regulatory-regions-of-hypothalamic-pomc-in-the-offspring-of-rats
#10
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/29777230/serum-biomarkers-of-inflammation-and-adiposity-in-the-labs-cohort-associations-with-metabolic-disease-and-surgical-outcomes
#11
Robert W O'Rourke, Geoffrey S Johnson, Jonathan Q Purnell, Anita P Courcoulas, Gregory F Dakin, Luis Garcia, Marcelo Hinojosa, James E Mitchell, Alfons Pomp, Walter J Pories, Konstantinos Spaniolas, David R Flum, Abdus S Wahed, Bruce M Wolfe
BACKGROUND: The utility of serum biomarkers related to inflammation and adiposity as predictors of metabolic disease prevalence and outcomes after bariatric surgery are not well-defined. METHODS: Associations between pre- and post-operative serum levels of four biomarkers (C-reactive protein (CRP), cystatin C (CC), leptin, and ghrelin) with baseline measures of adiposity and metabolic disease prevalence (asthma, diabetes, sleep apnea), and weight loss and metabolic disease remission after bariatric surgery were studied in the Longitudinal Assessment of Bariatric Surgery (LABS) cohort...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29777227/in-utero-exposure-to-gestational-diabetes-and-adiposity-does-breastfeeding-make-a-difference
#12
L L Hui, A M Li, E A S Nelson, G M Leung, S L Lee, C M Schooling
BACKGROUND/OBJECTIVES: Short-term breastfeeding from mothers with gestational diabetes (GDM) may programme metabolism and increase offspring diabetes risk. We examined the association of in utero GDM exposure with adiposity from infancy to adolescence, and whether any association was modified by breastfeeding during early infancy. METHODS: In the prospective Chinese birth cohort "Children of 1997" (n = 7342, 88% follow-up rate), generalised estimate equations with multiple imputation were used to assess associations of in utero GDM exposure with age- and sex-specific body mass index (BMI) z-score during infancy (3 and 9 months), childhood (2- < 8 years) and adolescence (8-16 years), adjusted for sex, parity, maternal age, birth place, preeclampisa, smoking, and family socio-economic position...
May 17, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29777200/a-map-of-the-pgc-1%C3%AE-and-nt-pgc-1%C3%AE-regulated-transcriptional-network-in-brown-adipose-tissue
#13
Ji Suk Chang, Sujoy Ghosh, Susan Newman, J Michael Salbaum
Transcriptional coactivator PGC-1α and its splice variant NT-PGC-1α play crucial roles in regulating cold-induced thermogenesis in brown adipose tissue (BAT). PGC-1α and NT-PGC-1α are highly induced by cold in BAT and subsequently bind to and coactivate many transcription factors to regulate expression of genes involved in mitochondrial biogenesis, fatty acid oxidation, respiration and thermogenesis. To identify the complete repertoire of PGC-1α and NT-PGC-1α target genes in BAT, we analyzed genome-wide DNA-binding and gene expression profiles...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29775611/reduced-adiposity-by-compensatory-wat-browning-upon-ibat-removal-in-mice
#14
Zhengyu Piao, Baiqiang Zhai, Xiaoxiao Jiang, Meng Dong, Changguo Yan, Jun Lin, Wanzhu Jin
The strong effects of classic brown adipose tissue (BAT) and recruited beige adipocytes in treatment of obesity and metabolic syndrome have been attracting increasing research interest. Cold treatment is an effective, convenient approach to stimulate BAT activity and induce white adipose tissue (WAT) browning. Here, we utilized prolonged cold exposure (from 2 h to 2 weeks in a 4° cold chamber) to elucidate dynamic changes in BAT and in WAT browning during acute and chronic cold exposure in mice. BAT mass decreased quickly, with reduced lipid droplet sizes within 8 h of cold exposure owing to the utilization of BAT pre-storage triglycerides, and subsequently increased during prolonged cold exposure...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29775610/monocarboxylate-transporters-in-breast-cancer-and-adipose-tissue-are-novel-biomarkers-and-potential-therapeutic-targets
#15
Zhiyu Li, Qi Wu, Si Sun, Juan Wu, Juanjuan Li, Yimin Zhang, Changhua Wang, Jingping Yuan, Shengrong Sun
Monocarboxylate transporters (MCTs) are transmembrane proteins that control the lactate metabolism and associated with poor prognosis in solid tumors including breast cancer (BC). This study aimed to evaluate the clinical and prognostic value of MCTs used by immunohistochemistry and quantum dots-based fluorescent imaging technique in BC and surrounding stroma with emphasis on the interaction between tumour and stroma. Moreover, the data from The Cancer Genome Atlas (TCGA) was analyzed to evaluate the association between MCTs mRNA expression and prognosis of breast cancer patients...
May 15, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29773865/perlecan-a-heparan-sulfate-proteoglycan-regulates-systemic-metabolism-with-dynamic-changes-in-adipose-tissue-and-skeletal-muscle
#16
Yuri Yamashita, Satoshi Nakada, Toshinori Yoshihara, Takeshi Nara, Norihiko Furuya, Takashi Miida, Nobutaka Hattori, Eri Arikawa-Hirasawa
Perlecan (HSPG2), a heparan sulfate proteoglycan, is a component of basement membranes and participates in a variety of biological activities. Here, we show physiological roles of perlecan in both obesity and the onset of metabolic syndrome. The perinatal lethality-rescued perlecan knockout (Hspg2-/- -Tg) mice showed a smaller mass and cell size of white adipose tissues than control (WT-Tg) mice. Abnormal lipid deposition, such as fatty liver, was not detected in the Hspg2-/- -Tg mice, and those mice also consumed more fat as an energy source, likely due to their activated fatty acid oxidation...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773653/inhibition-of-protein-arginine-methyltransferase-5-enhances-hepatic-mitochondrial-biogenesis
#17
Lei Huang, Jehnan Liu, Xiao-Ou Zhang, Katelyn Sibley, Sonia M Najjar, Mary M Lee, Joae Qiong Wu
Protein arginine methyltransferase 5 (PRMT5) regulates gene expression either transcriptionallyly by symmetric dimethylation of arginine residues on histones H4R3, H3R8 and H2AR3, or at the post-translational level by methylation of non-histone target proteins. While emerging evidence suggests that PRMT5 functions as an oncogene, its role in metabolic diseases is not well defined. We investigated the role of PRMT5 in promoting high fat-induced hepatic steatosis. High fat diet up-regulated PRMT5 levels in the liver, but not in other metabolically relevant tissues such as skeletal muscle or white and brown adipose tissue...
May 17, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29773464/sex-and-gender-differences-in-developmental-programming-of-metabolism
#18
REVIEW
Laura Dearden, Sebastien G Bouret, Susan E Ozanne
BACKGROUND: The early life environment experienced by an individual in utero and during the neonatal period is a major factor in shaping later life disease risk-including susceptibility to develop obesity, diabetes, and cardiovascular disease. The incidence of metabolic disease is different between males and females. How the early life environment may underlie these sex differences is an area of active investigation. SCOPE OF REVIEW: The purpose of this review is to summarize our current understanding of how the early life environment influences metabolic disease risk in a sex specific manner...
April 30, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29773163/epicardial-adipose-tissue-may-mediate-deleterious-effects-of-obesity-and-inflammation-on-the-myocardium
#19
REVIEW
Milton Packer
Epicardial adipose tissue has unique properties that distinguish it from other depots of visceral fat. Rather than having distinct boundaries, the epicardium shares an unobstructed microcirculation with the underlying myocardium, and in healthy conditions, produces cytokines that nourish the heart. However, in chronic inflammatory disorders (especially those leading to heart failure with preserved ejection fraction), the epicardium becomes a site of deranged adipogenesis, leading to the secretion of proinflammatory adipokines that can cause atrial and ventricular fibrosis...
May 22, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29772029/prolyl-carboxypeptidase-activity-in-the-circulation-and-its-correlation-with-body-weight-and-adipose-tissue-in-lean-and-obese-subjects
#20
Kaat Kehoe, Heidi Noels, Wendy Theelen, Emilie De Hert, Shenguan Xu, An Verrijken, Thierry Arnould, Erik Fransen, Nina Hermans, Anne-Marie Lambeir, Per Venge, Luc Van Gaal, Ingrid De Meester
BACKGROUND: Prolyl carboxypeptidase (PRCP) is involved in the regulation of body weight, likely by hydrolysing alpha-melanocyte-stimulating hormone and apelin in the hypothalamus and in the periphery. A link between PRCP protein concentrations in plasma and metabolic disorders has been reported. In this study, we investigated the distribution of circulating PRCP activity and assessed its relation with body weight and adipose tissue in obese patients and patients who significantly lost weight...
2018: PloS One
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