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Leptin, obesity

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https://www.readbyqxmd.com/read/28335075/breastmilk-with-a-high-omega-6-to-omega-3-fatty-acid-ratio-induced-cellular-events-similar-to-insulin-resistance-and-obesity-in-3t3-l1-adipocytes
#1
H Vaidya, S K Cheema
BACKGROUND: An imbalance of omega (n)-3 and n-6 polyunsaturated fatty acids (PUFA) during critical periods of development may have adverse effects on the health of the newborn in later life. OBJECTIVES: We hypothesized that breastmilk with higher n-6 to n-3 PUFA ratio will have higher inflammatory cytokines and initiate cellular events similar to insulin resistance and obesity. METHODS: Breastmilk was collected from healthy women who gave natural birth at full term...
March 23, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28332893/monascus-ruber-fermented-buckwheat-red-yeast-buckwheat-suppresses-adipogenesis-in-3t3-l1-cells
#2
Heeok Hong, Jiyoung Park, Wenchie L Lumbera, Seong Gu Hwang
Although various treatments have been used for weight loss to date, obese people rarely have safe and effective treatment options. Therefore, the antiobesity effects of several natural compounds are being actively investigated. This study was conducted to investigate the antiadipogenic effects of Monascus ruber-fermented Fagopyrum esculentum (red yeast buckwheat, RYB) in 3T3-L1 cells. We assessed the intracellular lipid content and adipocyte differentiation by oil red O staining and the expression of genes and proteins associated with adipocyte differentiation by reverse transcription-polymerase chain reaction and western blotting in 3T3-L1 cells...
March 23, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28332170/the-association-between-polycystic-ovary-syndrome-obesity-and-the-serum-concentration-of-adipokines
#3
S Behboudi-Gandevani, F Ramezani Tehrani, R Bidhendi Yarandi, M Noroozzadeh, M Hedayati, F Azizi
PURPOSE: This study aimed to investigate the interactive effect of polycystic ovary syndrome (PCOS) status and obesity status on the serum levels of adipokines. METHODS: In this comparative case-control cross-sectional study, 58 women with PCOS and 104 eumenorrheic non-hirsute women as the control group were recruited. They were further divided into two subgroups of overweight/obese and normal weight. The interactive effect of the PCOS status and obesity status on the circulating levels of adipokines was assessed using general linear model with the adjustment of age...
March 22, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28329079/sleep-duration-and-cardiometabolic-risk-among-chinese-school-aged-children-do-adipokines-play-a-mediating-role
#4
Lujiao Li, Junling Fu, Xin Ting Yu, Ge Li, Lu Xu, Jinghua Yin, Hong Cheng, Dongqing Hou, Xiaoyuan Zhao, Shan Gao, Wenhui Li, Changhong Li, Struan F A Grant, Mingyao Li, Yi Xiao, Jie Mi, Ming Li
Objective: To assess the associations between sleep duration and cardiometabolic risk factors in Chinese school-aged children and to explore the possible mediating role of adipokines. Methods: Sleep duration was collected in 3,166 children from the Beijing Child and Adolescent Metabolic Syndrome study. Glucose homeostasis and other cardiometabolic risk factors were assessed. Serum adipokines including leptin, total and high-molecular-weight (HMW) adiponectin, resistin, fibroblast growth factor 21 (FGF21) and retinol binding protein 4 (RBP4) were determined...
March 9, 2017: Sleep
https://www.readbyqxmd.com/read/28328066/maternal-obesity-and-inflammatory-mediators-a-controversial-association
#5
REVIEW
Karen Priscilla Tezotto Pendeloski, Erika Ono, Maria Regina Torloni, Rosiane Mattar, Silvia Daher
The link between maternal obesity and inflammatory mediators is still unclear. Our aim was to summarize the main findings of recently published studies on this topic. We performed a search in Medline for studies published in the last years on obesity, human pregnancy, and inflammatory mediators. We report the findings of 30 studies. The characteristics and number of participants, study design, gestational age at sample collection, and type of sample varied widely. Approximately two-thirds of them investigated more than one mediator, and 50% included participants in only one trimester of pregnancy...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28324021/endogenous-calcitonin-gene-related-peptide-regulates-lipid-metabolism-and-energy-homeostasis-in-male-mice
#6
Tian Liu, Akiko Kamiyoshi, Takayuki Sakurai, Yuka Ichikawa-Shindo, Hisaka Kawate, Lei Yang, Megumu Tanaka, Xian Xian, Akira Imai, Liuyu Zhai, Kazutaka Hirabayashi, Kun Dai, Keiya Tanimura, Teng Liu, Nanqi Cui, Kyoko Igarashi, Akihiro Yamauchi, Takayuki Shindo
Calcitonin gene-related peptide (CGRP) is a bioactive peptide produced by alternative splicing of the primary transcript of the calcitonin/CGRP gene. CGRP is largely distributed in the cardiovascular and nervous systems, where it acts as a regulatory factor. CGRP is also expressed in organs and tissues involved in metabolic regulation, including white adipose tissue (WAT), where its function is largely unknown. In this study, we examined the effects of endogenous CGRP on metabolic function. When we administered a high-fat diet to CGRP knockout (CGRP-/-) and wild-type (WT) mice for 10 weeks, we observed that food intake did not differ between the two groups, but body weight and visceral fat weight were significantly lower in CGRP-/- mice...
January 20, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323970/obesity-modulates-inflammation-and-lipid-metabolism-oocyte-gene-expression-a-single-cell-transcriptome-perspective
#7
Meghan L Ruebel, Matthew Cotter, Clark R Sims, Dean M Moutos, Thomas M Badger, Mario A Cleves, Kartik Shankar, Aline Andres
Context: It is hypothesized that obesity adversely affects the ovarian environment which can disrupt oocyte maturation and may further impact embryonic development. Objective: This study aimed to compare oocyte gene expression profiles and follicular fluid (FF) content from overweight/obese (OW) women and normal weight (NW) women who were undergoing fertility treatments. Design: Using single cell transcriptomic analyses, we investigated oocyte gene expression using RNA-seq...
March 15, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323920/perinatal-exposure-to-low-dose-bisphenol-a-bpa-disrupts-the-structural-and-functional-development-of-the-hypothalamic-feeding-circuitry
#8
Harry MacKay, Zachary R Patterson, Alfonso Abizaid
Bisphenol-A (BPA) is a component of polycarbonate and other plastics to which humans are regularly exposed at low levels. BPA is characterized as an endocrine disruptor due to observations of its estrogenic activity in various experimental models. We have previously shown evidence of disrupted hypothalamic feeding circuitry and leptin sensitivity in adult BPA-exposed animals subject to a high-fat diet, but because these animals were already exhibiting a diet-induced obese phenotype, we could not rule out the possibility that these observations were simply consequences of the obesity, not a pre-existing phenotype produced by BPA exposure...
February 7, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323914/menopause-is-a-determinant-of-breast-aromatase-expression-and-its-associations-with-bmi-inflammation-and-systemic-markers
#9
Kristy A Brown, Neil M Iyengar, Xi Kathy Zhou, Ayca Gucalp, Kotha Subbaramaiah, Hanhan Wang, Dilip D Giri, Monica Morrow, Domenick J Falcone, Nils K Wendel, Lisle A Winston, Michael Pollak, Anneloor Dierickx, Clifford A Hudis, Andrew J Dannenberg
CONTEXT: Most estrogen-dependent breast cancers occur after menopause despite low levels of circulating estrogens. Breast expression of the estrogen-biosynthetic enzyme, aromatase, is proposed to drive breast cancer development after menopause. However, the effects of menopause on breast aromatase expression are unknown. OBJECTIVE: To determine the effect of menopause on breast aromatase expression in relation to body mass index (BMI), white adipose tissue inflammation (WATi) and systemic markers of metabolic dysfunction...
February 16, 2017: Journal of Clinical Endocrinology and Metabolism
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
#10
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/28320596/phillyrin-lowers-body-weight-in-obese-mice-via-the-modulation-of-ppar-beta-delta-angptl-4-pathway
#11
Hong-Bo Xiao, Guo-Guang Sui, Xiang-Yang Lu
OBJECTIVE: Previous investigations have shown that the peroxisome proliferator activated receptor beta/delta (PPAR<beta>/<delta>)-angiopoietin-like protein 4 (ANGPTL4) pathways may be a new pharmacologic target for treatment of obesity. The present study was conducted to test the effect of phillyrin, ‎a glucoside, on obesity in mice. METHOD: Fifty mice were randomly divided into 5 groups (n=10): control group (C57BL/6J mice), obese mice group, two groups of obese mice treated with phillyrin (15 or 45mg/kg/day), one group of obese mice treated with PPAR<beta>/<delta> agonist GW0742 (3mg/kg/day)...
March 17, 2017: Obesity Research & Clinical Practice
https://www.readbyqxmd.com/read/28319852/pterostilbene-a-dimethylated-analog-of-resveratrol-promotes-energy-metabolism-in-obese-rats
#12
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/28318332/abnormality-of-adipokines-and-endothelial-dysfunction-in-mexican-obese-adolescents-with-insulin-resistance
#13
Maria Del Carmen Ortiz Segura, Blanca Estela Del Río Navarro, Benjamín Antonio Rodríguez Espino, Laurence A Marchat, Fausto Sánchez Muñoz, Santiago Villafaña, Enrique Hong, Fabián Meza-Cuenca, Patrick Mailloux Salinas, Francisco Bolaños-Jiménez, Elena Zambrano, Abel Armando Arredondo-López, Guadalupe Bravo, Fengyang Huang
PURPOSE: The aim of this study was to investigate the possible relationship among insulin resistance (IR), endothelial dysfunction, and alteration of adipokines in Mexican obese adolescents and their association with metabolic syndrome (MetS). MATERIALS AND METHODS: Two hundred and twenty-seven adolescents were classified according to the body mass index (BMI) (control: N=104; obese: N=123) and homeostasis model of the assessment-insulin resistance index (HOMA-IR) (obese with IR: N=65)...
March 20, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28314371/intrauterine-growth-restriction-programs-the-hypothalamus-of-adult-male-rats-integrated-analysis-of-proteomic-and-metabolomic-data
#14
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
https://www.readbyqxmd.com/read/28299379/effects-of-hepatic-glycogen-on-food-intake-and-glucose-homeostasis-are-mediated-by-the-vagus-nerve-in-mice
#15
Iliana López-Soldado, Rebeca Fuentes-Romero, Jordi Duran, Joan J Guinovart
AIMS/HYPOTHESIS: Liver glycogen plays a key role in regulating food intake and blood glucose. Mice that accumulate large amounts of this polysaccharide in the liver are protected from high-fat diet (HFD)-induced obesity by reduced food intake. Furthermore, these animals show reversal of the glucose intolerance and hyperinsulinaemia caused by the HFD. The aim of this study was to examine the involvement of the hepatic branch of the vagus nerve in regulating food intake and glucose homeostasis in this model...
March 15, 2017: Diabetologia
https://www.readbyqxmd.com/read/28292619/obesity-and-female-infertility-potential-mediators-of-obesity-s-impact
#16
REVIEW
Darcy E Broughton, Kelle H Moley
The worldwide upward trend in obesity has been dramatic, now affecting more than 20% of American women of reproductive age. Obesity is associated with many adverse maternal and fetal effects prenatally, but it also exerts a negative influence on female fertility. Obese women are more likely to have ovulatory dysfunction due to dysregulation of the hypothalamic-pituitary-ovarian axis. Women with polycystic ovarian syndrome who are also obese demonstrate a more severe metabolic and reproductive phenotype. Obese women have reduced fecundity even when eumenorrheic and demonstrate poorer outcomes with the use of in vitro fertilization...
March 11, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28290903/-stable-nitric-oxide-metabolites-levels-in-hypertensive-patients-with-obesity-and-high-leptin-level
#17
V I Podzolkov, A E Bragina, N F Murashko
OBJECTIVE: to investigate levels of the stable nitric oxide metabolites (NOx) in hypertensive patients with obesity and hyperleptinemia. MATERIAL: We examined 124 untreated patients (45 men and 79 women) with essential hypertension (EH) (mean age 51.4+/-6.5 years, mean hypertension duration 8.5+/-7.6 years, 64% with visceral obesity) and 25 healthy volunteers (10 men and 15 women with comparable age). RESULTS: NOx levels were significantly higher in hypertensives (43...
July 2016: Kardiologiia
https://www.readbyqxmd.com/read/28290879/-adipokines-level-in-metabolically-healthy-obese-saint-petersburg-inhabitants-esse-rf
#18
M A Boyarinova, A V Orlov, O P Rotar, A S Alieva, E V Moguchaya, E U Vasileva, V N Soltsev, E I Baranova, A O Konradi
AIM: to elucidate prevalence of phenotypes of metabolically heathy obesity (MHO) among inhabitants of Saint-Petersburg using various criteria and assess dependence levels of adipokines on obesity phenotype. MATERIAL AND METHODS: Within a framework of epidemiologic study ESSE-RF we formed a random sample of 1600 Saint-Petersburg inhabitants stratified according to gender and age. Examination of participants included anthropometry with measurement of waist circumference CRP and estimation of body mass index (BMI), measurement of arterial pressure, determination of fasting blood glucose, insulin (with calculation of index of insulin resistance -IIR), lipid spectrum, C-reactive protein (CRP), adiponectin, leptin...
August 2016: Kardiologiia
https://www.readbyqxmd.com/read/28289103/bone-structural-changes-after-gastric-bypass-surgery-evaluated-by-hr-pqct-a-two-year-longitudinal-study
#19
Vikram Vinod Shanbhogue, René Klinkby Støving, Katrine Diemer Frederiksen, Stine Hanson, Kim Brixen, Jeppe Gram, Niklas Rye Jorgensen, Stinus Hansen
Objective, design and methods: Roux-en-Y gastric bypass (RYGB) has proved successful in attaining sustained weight loss but may lead to metabolic bone disease. To assess impact on bone mass and structure, we measured areal bone mineral density at the hip and spine by dual-energy x-ray absorptiometry, and volumetric BMD (vBMD) and bone microarchitecture at the distal radius and tibia by high-resolution peripheral quantitative CT in 25 morbidly obese subjects (15 females, 10 males) at 0, 12 and 24 months after RYGB...
March 13, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28288611/benefits-of-resistance-exercise-in-lean-women-with-fibromyalgia-involvement-of-igf-1-and-leptin
#20
Jan L Bjersing, Anette Larsson, Annie Palstam, Malin Ernberg, Indre Bileviciute-Ljungar, Monika Löfgren, Björn Gerdle, Eva Kosek, Kaisa Mannerkorpi
BACKGROUND: Chronic pain and fatigue improves by exercise in fibromyalgia (FM) but underlying mechanisms are not known. Obesity is increased among FM patients and associates with higher levels of pain. Symptom improvement after aerobic exercise is affected by body mass index (BMI) in FM. Metabolic factors such as insulin-like growth factor 1 (IGF-1) and leptin may be involved. In this study, the aim was to evaluate the role of metabolic factors in lean, overweight and obese women during resistance exercise, in relation to symptom severity and muscle strength in women with FM...
March 14, 2017: BMC Musculoskeletal Disorders
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