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https://www.readbyqxmd.com/read/28647365/conjugated-linoleic-acid-prevents-age-induced-bone-loss-in-mice-by-regulating-both-osteoblastogenesis-and-adipogenesis
#1
Guanlin Lin, Huan Wang, Jun Dai, Xiao Li, Ming Guan, Shutao Gao, Qing Ding, Huaixi Wang, Huang Fang
Osteoporosis (OP) can increase the risk of bone fracture and other complications, which is a major clinical problem. Previous researches have revealed that conjugated linoleic acid (CLA) can promote the bone formation. But the mechanisms are not clear. Thus, we tested the hypothesis that CLA acts on bone formation might be via mTOR Complex1 (mTORC 1) pathway by in vitro and vivo assays. We studied the effect of CLA mix on MC3T3-E1 pre-osteoblasts differentiation into osteoblasts, and bone formation under osteoporotic conditions...
June 21, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28646459/silymarin-inhibits-adipogenesis-in-the-adipocytes-in-grass-carp-ctenopharyngodon-idellus-in-vitro-and-in-vivo
#2
Peizhen Xiao, Zhou Yang, Jian Sun, Jingjing Tian, Zhiguang Chang, Xuexian Li, Baotong Zhang, Yuantu Ye, Hong Ji, Ermeng Yu, Jun Xie
In this study, two experiments were performed to explore the function of silymarin in adipogenesis in grass carp (Ctenopharyngodon idellus) using in vitro and in vivo models. In experiment 1, differentiated grass carp pre-adipocytes were treated with silymarin for 6 days. Treatment with 100 μg mL(-1)silymarin (SM100 group) significantly reduced triglyceride accumulation at day 6. The adipogenic gene expression levels of PPARγ, C/EBPα, SREBP1c, FAS, SCD1, and LPL, and the protein expression level of PPARγ were significantly down-regulated in the SM100 group...
June 23, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28646352/lead-enhancement-of-3t3-l1-fibroblasts-differentiation-to-adipocytes-involves-erk-c-ebp%C3%AE-and-ppar%C3%AE-activation
#3
Claudia Noemí Martini, Matías Gabrielli, Graciela Bonifacino, María Magdalena Codesido, María Del Carmen Vila
Lead (Pb) is an environmental and industrial contaminant that still represents a public health problem. Elevated Pb exposure has been inversely correlated with femoral bone density and associated with osteoporosis. In the last years, it has been shown that inhibition of osteogenesis from mesenchymal stem cells activates adipogenesis and vice versa. In this paper, we investigated the effect of Pb on the differentiation of 3T3-L1 fibroblasts to adipocytes which is the cell model most used to study adipogenesis...
June 23, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28645613/regulation-of-testicular-steroidogenesis-by-foxa3-via-transcriptional-modulation-of-er%C3%AE-signaling-in-type-2-diabetes-mellitus-t2dm
#4
Yong Zhao, Hong-Xin Li, Ke Wang, Bin-Yuan Yan, Wei Li
Although both insulin and estrogen receptor α (ERα) are known to exert inhibitory effects on testicular steroidogenesis, it remains unknown whether these pathways regulate testosterone (T) production under certain pathological conditions [e.g., type 2 diabetes mellitus (T2DM)] in a coordinated manner. Here, we found that the expression of forkhead box protein A3 (Foxa3), an essential transcriptional regulator engaged in adipogenesis and energy metabolism, was significantly down-regulated in the Leydig cells (LCs) from T-deficient T2DM mice...
June 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28645103/colxv-promotes-adipocyte-differentiation-via-inhibiting-dna-methylation-and-camp-pka-pathway-in-mice
#5
Guannv Liu, Meihang Li, Yatao Xu, Song Wu, Muhammad Saeed, Chao Sun
Extracellular matrix (ECM), as an essential component of adipose tissue, not only provides mechanical support for adipocyte growth, but also participates in ECM-adipocyte communication via various secreted proteins, including highly enriched collagens. Collagen XV (ColXV) is a secreted non-fibrillar collagen within ECM Basement Membrane (BM) zones and well recognized as a tumor suppressor. However, the role of ColXV in adipose tissue is still unknown. In this study, high fat diet (HFD) fed mice were used as obese model, in which we deeply investigated the interaction between ColXV and adipocyte differentiation or adipose metabolism...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28641777/role-of-parl-pink1-parkin-pathway-in-adipocyte-differentiation
#6
Ming-Yuh Shiau, Pin-Shen Lee, Ying-Jyun Huang, Ching-Ping Yang, Chiao-Wan Hsiao, Kai-Yun Chang, Huan-Wen Chen, Yih-Hsin Chang
OBJECTIVE: Adipogenesis determines the number of adipocytes which is increased when individuals become obese. Mitochondria undergo remarkable morphological and functional changes during adipogenesis. PTEN-induced kinase 1 (PINK1) is pivotal to maintain mitochondrial homeostasis in neural cells. The present study aimed at investigating effects of PINK1 on adipogenesis and energy metabolism. METHODS: Expression of presenilin associated rhomboid-like protein (PARL), PINK1 and Parkin, as well as the interaction among these proteins was temporally examined during adipogenesis...
July 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28637206/improving-combination-osteoporosis-therapy-in-a-preclinical-model-of-heightened-osteoanabolism
#7
Yu Shao, Selene Hernandez-Buquer, Paul Childress, Keith R Stayrook, Marta B Alvarez, Hannah Davis, Lilian Plotkin, Yongzheng He, Keith W Condon, David B Burr, Stuart J Warden, Alexander G Robling, Feng-Chun Yang, Ronald C Wek, Matthew R Allen, Joseph P Bidwell
Combining anti-catabolic agents with parathyroid hormone (PTH) to enhance bone mass has yielded mixed results in osteoporosis patients. Towards the goal of enhancing the efficacy of these regimens, we tested their utility in combination with loss of the transcription factor Nmp4 since disabling this gene amplifies PTH-induced increases in trabecular bone in mice by boosting osteoblast secretory activity. We addressed whether combining a sustained anabolic response with an anti-catabolic results in superior bone acquisition compared to PTH mono-therapy...
June 20, 2017: Endocrinology
https://www.readbyqxmd.com/read/28637122/a-new-cinnamic-acid-glycoside-from-roots-of-heracleum-dissectum
#8
Zhi-Gang Wang, Jie Mi, Xin-Rui Wang, Ya-Yu Huo, Ya-Jie Peng, Hai-Min Zhang, Yang Gao, Hai-Long Zhang
From the roots of Heracleum dissectum Lebb., one new cinnamic acid glycoside derivative named dissectumoside (1), together with eight known compounds including three phenolics, three phenolic glycosides and two phenylpropanoic glycoside were isolated using various chromatographic methods. Among them compound 2-9 was isolated from the plant for the first time. Their structures were elucidated and identified on the basis of their physicochemical properties and by extensive analyses of NMR spectroscopy and high-resolution mass spectrometry...
June 15, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28633482/markers-of-adipogenesis-but-not-inflammation-in-adipose-tissue-are-independently-related-to-insulin-sensitivity
#9
Natalia Matulewicz, Magdalena Stefanowicz, Agnieszka Nikolajuk, Monika Karczewska-Kupczewska
Context: In obesity, adipose tissue (AT) undergoes dynamic remodeling, including an alternations in adipogenesis, AT-resident cell content, angiogenesis and turnover of extracellular matrix (ECM) components. Studies on AT in humans have been carried out mostly on people with severe metabolic abnormalities, like type 2 diabetes or morbid obesity. Objective: The purpose of the present study was to investigate subcutaneous AT gene expression of markers of adipogenesis, ECM remodeling and inflammation in young, healthy, overweight or obese subjects...
June 16, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28632199/modulatory-effects-of-guarana-paullinia-cupana-on-adipogenesis
#10
Natália da Silva Lima, Erica de Paula Numata, Leonardo Mendes de Souza Mesquita, Pollyana Hammoud Dias, Wagner Vilegas, Alessandra Gambero, Marcelo Lima Ribeiro
Guarana (Paullinia cupana) is a plant originated in Brazil that presents a beneficial effect on body weight control and metabolic alterations. The aim of this study was to evaluate the effects of guarana on genes and miRNAs related to adipogenesis in 3T3L1 cells. The anti-adipogenic effect of guarana was evaluated by Oil Red-O staining. Gene and miRNA expression levels were determined by real time PCR. The Cebpα and β-catenin nuclear translocation were evaluated using immunocytochemistry. Our data indicated that the triglyceride-reducing effect of guarana was dose-dependent from 100 to 300 µg/mL (-12%, -20%, -24% and -40%, respectively, p < 0...
June 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28629029/chitosan-coated-amyloid-fibrils-increase-adipogenesis-of-mesenchymal-stem-cells
#11
Jay Gilbert, Nicholas P Reynolds, Sarah M Russell, David Haylock, Sally McArthur, Mirren Charnley, Owen G Jones
Mesenchymal stem cells (MSCs) have the potential to revolutionize medicine due to their ability to differentiate into specific lineages for targeted tissue repair. Development of materials and cell culture platforms that improve differentiation of either autologous or allogenic stem cell sources into specific lineages would enhance clinical utilization of MCSs. In this study, nanoscale amyloid fibrils were evaluated as substrate materials to encourage viability, proliferation, multipotency, and differentiation of MSCs...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627656/adipokines-and-free-fatty-acids-regulate-insulin-sensitivity-by-increasing-microrna-21-expression-in-human-mature-adipocytes
#12
Nannan Zhang, Naijian Zhang, Leilei Song, Hui Xie, Chao Zhao, Sujuan Li, Wenxi Zhao, Yaping Zhao, Chunlin Gao, Guangfeng Xu
Obesity is a global public health concern and may lead to a variety of complications. Previous studies have indicated that adipokines and energy‑source materials contribute to obesity and obesity‑associated insulin resistance. MicroRNAs (miRs) are endogenous 20‑ to 25‑nucleotide non‑coding RNAs associated with fat metabolism. It has been indicated that miR‑21 is associated with adipogenesis and metabolic syndrome. In the present study, the expression of miR‑21 in human mature adipocytes was analyzed using reverse transcription quantitative‑polymerase chain reaction following treatment with adipokines, including tumor necrosis factor (TNF)‑α, interleukin (IL)‑6, leptin, resistin and energy source materials, including free fatty acids (FFAs) and glucose...
June 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28627640/the-function-of-mirnas-in-hepatocarcinogenesis-induced-by-hepatitis-b-virus-x-protein-review
#13
Ziyao Wang, Zhongjun Wu, Ping Huang
MicroRNAs are short RNAs that play a crucial role in all biological processes through post-transcriptional regulation for protein-coding genes and inducing mRNA degradation. Hepatitis B virus infection has been considered as a major risk factor in hepatocellular carcinoma, further research indicates that hepatitis B virus X protein (HBx) is one of the critical links of hepatocarcinogenesis. HBx takes part in hepatocarcinogenesis via regulating transcription, signal transduction, apoptosis, protein degradation and DNA repair...
June 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28627196/comparison-of-gene-expression-profile-between-blood-cells-and-white-adipose-tissue-of-patients-with-obesity
#14
Marcela Augusta de Souza Pinhel, Natália Yumi Noronha, Carolina Ferreira Nicoletti, Driele Cristina Gomes Quinhoneiro, Bruno Affonso Parenti Oliveira, Cristiana Cortes-Oliveira, Wilson Salgado-Junior, Wilson Araújo da Silva-Junior, Júlio Sergio Marchini, Dorotéia Rossi Silva Souza, Carla Barbosa Nonino
INTRODUCTION: Gene expression analyses from peripheral blood mononuclear cells (PBMC) and white adipose tissue are conflicting. It seems that results from single tissue are not enough to explain how changes affect humans as a complex biological system. OBJECTIVE: The aim of this study was to compare, from obesity subjects, PBMC and white adipose tissue gene expression that regulates adipogenesis (perilipin 1 [PLIN1], adrenoreceptor beta 3 [ADRB3] and peroxisome proliferator-activated receptor [PPARG2]) and the energy metabolism (uncoupling protein UCP1, UCP2 and UCP3) process...
June 5, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28626026/protein-kinase-c%C3%AE-activates-fat-mass-and-obesity-associated-protein-by-influencing-its-ubiquitin-proteasome-degradation
#15
Haoran Tai, Xiaobo Wang, Jiao Zhou, Xiaojuan Han, Tingting Fang, Hui Gong, Ning Huang, Honghan Chen, Jianqiong Qin, Ming Yang, Xiawei Wei, Li Yang, Hengyi Xiao
PKCβ is a serine-threonine kinase associated with obesity and diabetic complications; its activation contributes to weight gain, and deletion of its gene results in resistance to genetic- and diet-induced obesity. Fat mass and obesity-associated (FTO) protein is a recently identified RNA demethylase, and its overexpression in mice leads to increased body weight as well as fat mass. Although sharing some features in anabolism regulation, PKCβ and FTO have not been investigated together; therefore, their relationship has not been established...
June 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28625910/a-high-fat-diet-enhances-the-sensitivity-of-chick-adipose-tissue-to-the-effects-of-centrally-injected-neuropeptide-y-on-gene-expression-of-adipogenesis-associated-factors
#16
Guoqing Wang, Carli A Williams, Betty R McConn, Mark A Cline, Elizabeth R Gilbert
The purpose of this study was to determine how dietary macronutrient composition and exogenous neuropeptide Y (NPY) affect mRNA abundance of factors associated with lipid metabolism in chick adipose tissue. Chicks were fed one of three isocaloric (3000kcal metabolizable energy (ME)/kg) diets after hatch: high carbohydrate (HC; control), high fat (HF; 30% of ME from soybean oil) or high protein (HP; 25% crude protein). On day 4 post-hatch, vehicle or 0.2nmol of NPY was injected intracerebroventricularly and abdominal and subcutaneous fat depots collected 1h later...
June 15, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28625492/cbmg-a-novel-derivative-of-mansonone-g-suppresses-adipocyte-differentiation-via-suppression-of-ppar%C3%AE-activity
#17
Hyo Kyeong Kim, Rita Hairani, Hana Jeong, Mi Gyeong Jeong, Warinthorn Chavasiri, Eun Sook Hwang
Mansorins and mansonones have been isolated from Mansonia gagei heartwoods, a traditional herbal medicine used to treat heart failure, and characterized to have anti-oxidant, anti-bacterial, anti-tumor, and anti-estrogenic activities. However, there is as yet no information on their effects on adipogenesis and lipid storage associated with heart disease. In this study, we investigated the effects of naturally occurring compounds on adipogenic differentiation and sought to develop more potent anti-adipogenic compound...
June 15, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28622415/is-bisphenol-a-an-environmental-obesogen
#18
REVIEW
Samuel Legeay, Sébastien Faure
Bisphenol a (BPA) is an endocrine disruptor with an estrogenic activity that is widely produced for the manufacture of polycarbonate plastic, epoxy resin and thermal paper. Its ubiquitous presence in the environment contributes to broad and continuous human exposure which has been associated with deleterious health effects. Despite numerous controversial discussions and a lack of consensus about BPA's safety, growing evidence indicates that BPA exposure positively correlates with an increased risk of developing obesity...
June 16, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28620299/the-alkamide-trans-pellitorine-targets-ppar%C3%AE-via-trpv1-and-trpa1-to-reduce-lipid-accumulation-in-developing-3t3-l1-adipocytes
#19
Barbara Lieder, Mathias Zaunschirm, Ann-Katrin Holik, Jakob P Ley, Joachim Hans, Gerhard E Krammer, Veronika Somoza
Adipose tissue is an important endocrine organ in the human body. However, pathological overgrowth is associated with chronic illness. Regulation of adipogenesis and maturation of adipocytes via bioactive compounds in our daily diet has been in focus of research in the past years and showed promising results for agonists of the ion channels transient receptor potential channel (TRP) V1 and A1. Here, we investigated the anti-adipogenic potential and underlying mechanisms of the alkamide trans-pellitorine present in Piper nigrum via TRPV1 and TRPA1 in 3T3-L1 cells...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28618328/preparation-of-a-polylactic-acid-knitting-mesh-for-pelvic-floor-repair-and-in-vivo-evaluation
#20
Yao Lu, Shengnan Dong, Peihua Zhang, Xin Liu, Xungai Wang
The health warning report by the Food and Drug Administration (FDA) in 2011 has drawn attention to the need for developing a suitable bio-scaffold for repairing female pelvic from disease. This work prepared a pure polylactic acid knitting mesh (PPA) and compared its structure and properties with a commercial mesh - Surgimesh® Prolapse (SP; Aspide Medical, France). Mechanical tests showed that the PPA mesh was stronger than SP with higher breaking strength and bursting strength. The in vivo property of PPA was evaluated with an animal model...
June 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
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