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adipocytokine AND adipocyte

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https://www.readbyqxmd.com/read/29769704/effect-of-protocatechuic-acid-on-insulin-responsiveness-and-inflammation-in-visceral-adipose-tissue-from-obese-individuals-possible-role-for-ptp1b
#1
Paulina Ormazabal, Beatrice Scazzocchio, Rosaria Varì, Carmela Santangelo, Massimo D'Archivio, Gianfranco Silecchia, Annunziata Iacovelli, Claudio Giovannini, Roberta Masella
BACKGROUND/OBJECTIVES: The occurrence of chronic inflammation in visceral adipose tissue (VAT) in obese subjects precipitates the development of insulin resistance and type 2 diabetes (T2D). Anthocyanins and their main metabolite protocatechuic acid (PCA) have been demonstrated to stimulate insulin signaling in human adipocytes. The aim of this study was to investigate whether PCA is able to modulate insulin responsiveness and inflammation in VAT from obese (OB) and normal weight (NW) subjects...
May 16, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29605673/high-fat-diet-exacerbates-early-psoriatic-skin-inflammation-independent-of-obesity-saturated-fatty-acids-as-key-players
#2
Diana Herbert, Sandra Franz, Yulia Popkova, Ulf Anderegg, Jürgen Schiller, Katharina Schwede, Axel Lorz, Jan C Simon, Anja Saalbach
In obesity, hypertrophic adipocytes secret high amounts of adipocytokines resulting in low-grade inflammation- amplified by infiltrating pro-inflammatory macrophages, oxidative stress, hypoxia and lipolysis. It is known, that these chronic pro-inflammatory conditions support the development of type II diabetes and cardio vascular diseases, while mechanisms of obesity-related exacerbation of inflammatory skin disorders like psoriasis are unclear. In this study, we uncover nutritional saturated fatty acids (SFAs) as major risk factors for the amplification of skin inflammation, independent of obesity-related parameters, like fat mass extension, adipocytokines and glucose homeostasis...
March 29, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29545541/toosendanin-inhibits-adipogenesis-by-activating-wnt-%C3%AE-catenin-signaling
#3
Tian-Xing Chen, Xiao-Ying Cheng, Yun Wang, Wu Yin
Toosendanin (TSN), a triterpenoid extracted from Melia toosendan, has been reported to possess anti-oxidant, anti-inflammatory, anti-allergic, and anti-arthritic activities. However, its anti-adipogenic effect remains unknown. Here, we found that TSN dose-dependently attenuated lipid accumulation in preadipocytes 3T3-L1 as evidenced by Oil Red O staining. TSN also significantly downregulated mRNA and protein levels of adipocytokines (adiponectin and leptin), CCAAT/enhancer binding proteins α (C/EBP-α), peroxisome proliferator-activated receptor γ (PPAR-γ), fatty acid synthase, and acetyl-CoA carboxylase in adipocytes...
March 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29525327/obesity-related-heart-failure-with-a-preserved-ejection-fraction-the-mechanistic-rationale-for-combining-inhibitors-of-aldosterone-neprilysin-and-sodium-glucose-cotransporter-2
#4
REVIEW
Milton Packer, Dalane W Kitzman
Obesity-related heart failure with a preserved ejection fraction (HFpEF) is an important phenotype prevalent in the community, especially in people with metabolic disorders (e.g., dyslipidemia, diabetes). These individuals exhibit a marked expansion of plasma volume, but ventricular distensibility is limited, most likely as a result of cardiac microvascular rarefaction acting in concert with myocardial and pericardial fibrosis. Consequently, the increase in plasma volume causes a disproportionate increase in cardiac filling pressures, leading to heart failure, even though systolic ejection is not impaired...
March 7, 2018: JACC. Heart Failure
https://www.readbyqxmd.com/read/29511320/preadipocytes-from-obese-humans-with-type-2-diabetes-are-epigenetically-reprogrammed-at-genes-controlling-adipose-tissue-function
#5
Emil Andersen, Lars Roed Ingerslev, Odile Fabre, Ida Donkin, Ali Altıntaş, Soetkin Versteyhe, Thue Bisgaard, Viggo B Kristiansen, David Simar, Romain Barrès
BACKGROUND: Deterioration of the adipogenic potential of preadipocytes may contribute to adipose tissue dysfunction in obesity and type 2 diabetes (T2D). Here, we hypothesized that extracellular factors in obesity epigenetically reprogram adipogenesis potential and metabolic function of preadipocytes. METHODS: The transcriptomic profile of visceral adipose tissue preadipocytes collected from Lean, Obese and Obese with T2D was assessed throughout in vitro differentiation using RNA sequencing...
February 20, 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29500565/spheroid-culture-system-confers-differentiated-transcriptome-profile-and-functional-advantage-to-3t3-l1-adipocytes
#6
Paul A Turner, Michael R Garrett, Sean P Didion, Amol V Janorkar
This study highlights functional differences between 2-D monolayer and 3-D spheroid 3T3-L1 adipocyte culture models and explores the underlying genomic mechanisms responsible for the different phenotypes present. The spheroids showed higher triglyceride accumulation than the monolayer culture and further increase with larger spheroid size. Whole transcriptome analysis indicated significant differential expression of genes related to adipogenesis, including adipocytokine signaling, fatty acid metabolism, and PPAR-γ signaling...
May 2018: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29433827/adipocytokines-and-breast-cancer
#7
REVIEW
Jiajia Li, Xianghui Han
A substantial number of studies have revealed that a growing list of cancers might be influenced by obesity. In this regard, one of the most prominent and well-characterized cancers is breast cancer, the leading cause of cancer death among women. Obesity is associated with an increased risk for the occurrence and development of breast cancer particular in postmenopausal women. Moreover, the relationship between adiposity and breast cancer risk is complex, with associations that differ depending on when body size is assessed (eg, premenopausal vs postmenopausal obesity) and when breast cancer is diagnosed (ie, premenopausal vs postmenopausal disease)...
January 8, 2018: Current Problems in Cancer
https://www.readbyqxmd.com/read/29410017/differential-response-to-caloric-restriction-of-retroperitoneal-epididymal-and-subcutaneous-adipose-tissue-depots-in-rats
#8
Takumi Narita, Masaki Kobayashi, Kaho Itakura, Rei Itagawa, Riho Kabaya, Yuka Sudo, Naoyuki Okita, Yoshikazu Higami
The beneficial actions of caloric restriction (CR) are partially mediated by metabolic remodeling of white adipose tissue (WAT). Recently, we showed that CR enhances de novo fatty acid (FA) biosynthesis and mitochondrial biogenesis, particularly in WAT. Here, to better understand the response of WAT to CR, we compare the effects of CR on three WAT depots in rats: retroperitoneal (rWAT), epididymal (eWAT) and subcutaneous (sWAT). Computed tomography and histological analysis showed that CR reduced the volume and average size of rWAT adipocytes...
April 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29398443/2-formyl-komarovicine-promotes-adiponectin-production-in-human-mesenchymal-stem-cells-through-ppar%C3%AE-partial-agonism
#9
Sungjin Ahn, Moonyoung Lee, Seungchan An, Sooyeol Hyun, Jiho Hwang, Jongkook Lee, Minsoo Noh
Adiponectin is a major adipocytokine secreted from mammalian adipocytes. Relatively low expression of adiponectin is associated with various human metabolic diseases and some cancers. Adiponectin-secreting compounds have therapeutic potential for these diseases. Adipogenesis of human bone marrow-mesenchymal stem cells (hBM-MSCs) has been used as a phenotypic assay to find adiponectin secreting compounds. In a phytochemical library screen, 2-formyl-komarovicine, 1-(quinolin-8-yl)-1,3,4,9-tetrahydro-2H-pyrido[3,4-b]indole-2-carbaldehyde, isolated from Nitraria komarovii was identified as a potential adiponectin-secreting compound...
March 1, 2018: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29395659/adiponectin-a-potential-therapeutic-target-for-metabolic-syndrome
#10
REVIEW
Abhijit A Ghadge, Amrita A Khaire, Aniket A Kuvalekar
Adiponectin is an important adipocytokine secreted chiefly by fat containing adipocytes, and plays a crucial role in glucose and lipid metabolism, inflammation and oxidative stress. Alterations in adiponectin levels have been shown to directly affect lipid and glucose metabolism that further increase the synthesis of lipids, free fatty acids and inflammatory cytokines. Changes in adiponectin levels also contribute to insulin resistance, obesity, cardiovascular diseases and type 2 diabetes. In the present review, we provide a comprehensive evaluation of the role of adiponectin and its molecular mechanisms in metabolic syndrome...
February 2018: Cytokine & Growth Factor Reviews
https://www.readbyqxmd.com/read/29356901/glycine-enhances-expression-of-adiponectin-and-il-10-in-3t3-l1-adipocytes-without-affecting-adipogenesis-and-lipolysis
#11
Jingqing Chen, Xiaoshi Ma, Ying Yang, Zhaolai Dai, Zhenlong Wu, Guoyao Wu
Glycine supplementation has been reported to enhance white-fat loss and improve sensitivity to insulin in animals with obesity or type 2 diabetes. However, the underlying mechanisms responsible for the beneficial effects of glycine remain largely unknown. The purpose of this study was to test the hypothesis that glycine regulates adipocyte differentiation, adipogenesis, and lipolysis, therefore, contributing to white-fat reduction. 3T3-L1 pre-adipocytes were induced to differentiate into adipocytes in the presence of glycine (0, 0...
January 22, 2018: Amino Acids
https://www.readbyqxmd.com/read/29325128/relationship-between-12-adipocytokines-and-distinct-components-of-the-metabolic-syndrome
#12
Thomas Ebert, Claudia Gebhardt, Markus Scholz, Tobias Wohland, Dorit Schleinitz, Mathias Fasshauer, Matthias Blüher, Michael Stumvoll, Peter Kovacs, Anke Tönjes
Objective: Adipose tissue-derived signals potentially link obesity and adipose tissue dysfunction with metabolic and cardiovascular diseases. Although some adipocytokines have been closely related to metabolic and cardiovascular traits, it is unknown which adipocytokine or adipocytokine clusters serve as meaningful markers of metabolic syndrome (MS) components. Therefore, this study investigated the associations of 12 adipocytokines with components of the MS to identify the most relevant cytokines potentially related to specific metabolic profiles...
March 1, 2018: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29273198/enlarged-adipocytes-in-subcutaneous-adipose-tissue-associated-to-hyperandrogenism-and-visceral-adipose-tissue-volume-in-women-with-polycystic-ovary-syndrome
#13
Bárbara Echiburú, Francisco Pérez-Bravo, José E Galgani, Daniel Sandoval, Carolina Saldías, Nicolás Crisosto, Manuel Maliqueo, Teresa Sir-Petermann
CONTEXT: Polycystic ovary syndrome (PCOS) is an androgen excess disorder associated with obesity and adipose tissue disturbances. Our aim was to evaluate gene expression of adipocytokines and adipocyte characteristics in abdominal subcutaneous adipose tissue (SAT) of PCOS women. DESIGN: Twelve PCOS (PCOSw) and 12 control (Cw) premenopausal women (BMI 20-35 kg/m2 ) were included, with measurements of whole-body composition assessed by dual-energy X-ray absorptiometry, and abdominal subcutaneous and visceral adipose tissue (VAT) volume, by magnetic resonance imaging...
February 2018: Steroids
https://www.readbyqxmd.com/read/29232925/deep-sea-water-improves-abnormalities-in-lipid-metabolism-through-lipolysis-and-fatty-acid-oxidation-in-high-fat-diet-induced-obese-rats
#14
Wei-Tang Chang, Tsung-Yueh Lu, Ming-Ching Cheng, Hsun-Chi Lu, Mei-Fang Wu, Chin-Lin Hsu
Deep sea water (DSW) is a natural marine resource that has been utilized for food, agriculture, cosmetics, and medicine. The aim of this study was to investigate whether DSW has beneficial lipid metabolic effects in an animal model. Our previous in vitro study indicated that DSW significantly decreased the intracellular triglyceride and glycerol-3-phosphate dehydrogenase activity in 3T3-L1 adipocytes. DSW also inhibited the gene levels of adipocyte differentiation, lipogenesis, and adipocytokines, and up-regulated gene levels of lipolysis and fatty acid oxidation...
December 11, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29228527/synergistic-effects-of-resistin-and-visfatin-as-adipocyte-derived-hormones-on-telomerase-gene-expression-in-ags-gastric-cancer-cell-line
#15
Masoumeh Mohammadi, Nosratollah Zarghami, Mehdi Hedayati, Sara Ghaemmaghami
Recently suggested that adipocytokines may play a role in pathogenesis and progression of certain cancers, especially in gastric cancer. The previous study showed Resistin and Visfatin, as adipocyte derived hormones, separately increases telomerase (hTERT) gene, the aim of this study is investigating synergic effects of Resistin and Visfatin on telomerase gene expression, in AGS gastric cancer cell line. In this study, human gastric cancer AGS cell line was selected. After stimulation with increasing concentrations of Resistin and Visfatin recombinant proteins for 24 and 48 hours, cell proliferation was assessed by XTT assay...
October 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/29215742/effects-of-small-interfering-rna-targeting-tlr4-on-expressions-of-adipocytokines-in-obstructive-sleep-apnea-hyponea-syndrome-with-hypertension-in-a-rat-model
#16
Jing-Guo Wu, Nan Xun, Li-Jin Zeng, Zhen-Yu Li, Yan-Bing Liang, Hao Tang, Zhong-Fu Ma
We explored the effects of RNA interference-mediated silencing of TLR4 gene on expressions of adipocytokines in obstructive sleep apnea hyponea syndrome (OSAS) with hypertension in a rat model. Systolic blood pressure of caudal artery and physiological changes were observed when establishing rat models of OSAS with hypertension. Mature rat adipocytes were induced from separated and cultured primary rat adipocytes. To transfect rat mature adipocytes, TLR4 siRNA group and negative control (NC) siRNA group were established...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29201467/constitutive-expression-of-adiponectin-in-endothelial-progenitor-cells-protects-a-rat-model-of-cerebral-ischemia
#17
Renwei Zhang, Xiaorui Xie, Qing Yu, Hongliang Feng, Meiyao Wang, Yan Li, Yumin Liu
Endothelial progenitor cells (EPCs), as precursors to endothelial cells, play a significant part in the process of endogenous blood vessel repair and maintenance of endothelial integrity. Adiponectin (APN) is an adipocyte-specific adipocytokine. In this study, we aim to test whether we transplant a combined graft of EPCs transfected with the adiponectin gene into a rat model of cerebral ischemia could improve functional recovery after middle cerebral artery occlusion (MCAO). Sprague-Dawley (SD) rats were randomly divided into a MCAO control group, a MCAO EPC treatment group, and a MCAO LV-APN-EPC treatment group...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29197590/identification-and-expression-patterns-of-adipokine-genes-during-adipocyte-differentiation-in-the-tibetan-goat-capra-hircus
#18
Xueying Li, Yan Wang, Jiazhong Guo, Tao Zhong, Li Li, Hongping Zhang, Linjie Wang
Adipokines are secreted by adipose tissue and play an important role in the regulation of lipid metabolism. However, the information regarding adipokines in goats is limited. PPARγ is a key gene in adipocyte differentiation and activates adipokine genes. Rosiglitazone is a PPARγ agonist and can promote the expression of PPARγ to increase the expression of lipogenesis-related genes. Therefore, investigation of the relationship between rosiglitazone and adipokines will help us to better understand the function of PPARγ in lipid metabolism in Tibetan goats...
February 15, 2018: Gene
https://www.readbyqxmd.com/read/29191637/spontaneous-development-of-hepatosteatosis-in-perilipin-1-null-mice-with-adipose-tissue-dysfunction
#19
Suning Wei, Shangxin Liu, Xueying Su, Weiyi Wang, Fengjuan Li, Jingna Deng, Ying Lyu, Bin Geng, Guoheng Xu
Fatty liver features triglyceride accumulation in hepatocytes and often occurs with obesity and lipodystrophy in humans. Here, we investigated the mechanism of maladaptive hepatosteatosis with adipose-tissue dysfunction. Perilipin 1 (Plin1) did not exist in hepatocytes but was expressed exclusively in adipocytes as a dual modulator for regulating two principal adipose-tissue functions, triglyceride storage and breakdown. Plin1-/- mice showed decreased fat storage but increased lipolysis and efflux of fatty acids from adipose tissue, and hepatosteatosis spontaneously developed without altered circulating inflammatory adipocytokine levels...
February 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29029093/electronegative-low-density-lipoprotein-l5-induces-adipose-tissue-inflammation-associated-with-metabolic-syndrome
#20
Liang-Yin Ke, Hua-Chen Chan, Hsiu-Chuan Chan, Franklin Chikodi Udo Kalu, Hsiang-Chun Lee, I-Ling Lin, Shih-Jie Jhuo, Wen-Ter Lai, Chen-Rong Tsao, Tatsuya Sawamura, Richard A Dixon, Chu-Huang Chen, Chih-Sheng Chu, Shyi-Jang Shin
Context: Electronegative low-density lipoprotein (LDL) L5 is a naturally occurring, atherogenic entity found at elevated levels in the plasma of patients with metabolic syndrome (MetS) in the absence of elevated plasma LDL levels. Objective: To investigate the role of L5 in the mechanism of adipose tissue inflammation associated with MetS. Patients/Setting: Plasma LDL isolated from patients with MetS (n = 29) and controls (n = 29) with similar plasma LDL levels was separated into five subfractions, L1 to L5, with increasing electronegativity...
December 1, 2017: Journal of Clinical Endocrinology and Metabolism
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