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Dan Ouyang, Lifeng Xu, Lihua Zhang, Dongguang Guo, Xiaotong Tan, Xiaofang Yu, Junjie Qi, Yaqiong Ye, Qihong Liu, Yongjiang Ma, Yugu Li
MicroRNAs are highly conserved non-coding small RNAs participating in almost all kinds of biological activities. MiR-181a has been reported to be involved in the differentiation of porcine primary preadipocytes, but the profound effect of miR-181a-5p on 3T3-L1 adipocyte differentiation and proliferation is still unclear. In this study, we found that supplementation of miR-181a-5p in 3T3-L1 cells significantly promoted the adipogenesis and inhibited cell proliferation with increased expression of adipogenic marker genes including peroxisome proliferator-activated receptor gamma (Pparγ), CCAAT/enhancer-binding protein alpha (C/ebpα), fatty acid-binding protein 4 (Fabp4), and Adiponectin, accompanied by an accumulation of lipid droplet, an increase of triglyceride content, and a decrease of cell proliferation...
October 14, 2016: Acta Biochimica et Biophysica Sinica
Ángeles C Ochoa-Martínez, Tania Ruíz-Vera, Sandra T Orta-García, G Domínguez-Cortinas, Jorge A Jiménez-Avalos, Iván N Pérez-Maldonado
AIM: This study aimed to evaluate the genetic effects of PON1 Q192R polymorphism on serum FABP4 levels in Mexican women. METHODS: PON1 Q192R polymorphism was genotyped using a TaqMan allelic discrimination assay and serum FABP4 concentration was measured using an enzyme-linked immunosorbent assay. RESULTS: The distribution of genotype frequencies in the assessed women (PON1 Q192R polymorphism) was QQ = 20%, QR = 48%, and RR = 32%...
October 6, 2016: Annals of Human Biology
Anning Yang, Huiping Zhang, Yue Sun, Yanhua Wang, Xiaoming Yang, Xiaoling Yang, Hui Zhang, Wei Guo, Guangrong Zhu, Jue Tian, Yuexia Jia, Yideng Jiang
Inflammation and dysregulated lipid metabolism are involved in the pathogenesis of preeclampsia, and fatty acid binding protein 4 (FABP4) is known to regulate both inflammation and lipid metabolism. In the present study, we elucidated the role of FABP4 using in vitro and in vivo models of preclampsia. We found increased expression of FABP4 in the placenta of preeclamptic rats, which was further confirmed in HTR-8 cells, an extravillous trophoblast cell line, treated with L-NAME. Overexpression of FABP4 in HTR-8 cells resulted in upregulated expression of pro-inflammatory cytokines IL-6 and TNF-α, and increased lipid accumulation, suggesting that FABP4 plays a role in preeclampsia...
October 2016: Placenta
Sebastien Elis, Alice Desmarchais, Sandrine Freret, Virginie Maillard, Valérie Labas, Juliette Cognié, Eric Briant, Celine Hivelin, Joëlle Dupont, Svetlana Uzbekova
The objective of this study was to determine whether fish oil supplement has an effect on adipose tissue lipid profiles and gene expression in postpartum dairy cows. Holstein cows were supplemented with either long-chain n-3 polyunsaturated fatty acid (PUFA; protected fish oil) or control PUFA (n-6; toasted soybeans) for 2 mo after calving (n = 23 per diet). These cows showed no difference in milk production or metabolic parameters, but exhibited a tendency toward a decrease in early embryo mortality rate after artificial insemination...
September 28, 2016: Journal of Dairy Science
Sadat A Aziz, Luisa A Wakeling, Satomi Miwa, Goiuri Alberdi, John E Hesketh, Dianne Ford
Promoting the development of brown or beige adipose tissue may protect against obesity and related metabolic features, and potentially underlies protective effects of genistein in mice. We observed that application of genistein to 3T3-L1 adipocytes changed the lipid distribution from large droplets to a multilocular distribution, reduced mRNAs indicative of white adipocytes (ACC, Fasn, Fabp4, HSL, chemerin and resistin) and increased mRNAs that are a characteristic feature of brown/beige adipocytes (CD-137 and UCP1)...
September 27, 2016: Molecular Nutrition & Food Research
José María Sayagués, Luís Antonio Corchete, María Laura Gutiérrez, Maria Eugenia Sarasquete, María Del Mar Abad, Oscar Bengoechea, Encarna Fermiñán, María Fernanda Anduaga, Sofia Del Carmen, Manuel Iglesias, Carmen Esteban, María Angoso, Jose Antonio Alcazar, Jacinto García, Alberto Orfao, Luís Muñoz-Bellvis
Metastatic dissemination is the most frequent cause of death of sporadic colorectal cancer (sCRC) patients. Genomic abnormalities which are potentially characteristic of such advanced stages of the disease are complex and so far, they have been poorly described and only partially understood. We evaluated the molecular heterogeneity of sCRC tumors based on simultaneous assessment of the overall GEP of both coding mRNA and non-coding RNA genes in primary sCRC tumor samples from 23 consecutive patients and their paired liver metastases...
September 20, 2016: Oncotarget
Holger Kühne, Ulrike Obst-Sander, Bernd Kuhn, Aurelia Conte, Simona M Ceccarelli, Werner Neidhart, Markus G Rudolph, Giorgio Ottaviani, Rodolfo Gasser, Sung-Sau So, Shirley Li, Xiaolei Zhang, Lin Gao, Michael Myers
Dual inhibition of fatty acid binding proteins 4 and 5 (FABP4 and FABP5) is expected to provide beneficial effects on a number of metabolic parameters such as insulin sensitivity and blood glucose levels and should protect against atherosclerosis. Starting from a FABP4 selective focused screening hit, biostructure information was used to modulate the selectivity profile in the desired way and to design potent dual FABP4/5 inhibitors with good selectivity against FABP3. With very good pharmacokinetic properties and no major safety alerts, compound 12 was identified as a suitable tool compound for further in vivo investigations...
October 15, 2016: Bioorganic & Medicinal Chemistry Letters
Amy C Wotherspoon, Ian S Young, David R McCance, Chris C Patterson, Michael J A Maresh, Donald W M Pearson, James D Walker, Valerie A Holmes
OBJECTIVE: To examine the association between fatty acid binding protein 4 (FABP4) and pre-eclampsia risk in women with type 1 diabetes. RESEARCH DESIGN AND METHODS: Serum FABP4 was measured in 710 women from the Diabetes and Pre-eclampsia Intervention Trial (DAPIT) in early pregnancy and in the second trimester (median 14 and 26 weeks' gestation, respectively). RESULTS: FABP4 was significantly elevated in early pregnancy (geometric mean 15...
October 2016: Diabetes Care
Laura G Goetz, Ramanaiah Mamillapalli, Hugh S Taylor
The gynecological disease endometriosis is characterized by the deposition and proliferation of the endometrial cells outside the uterus and is linked to low body mass index (BMI) clinically. Gene expression in the liver of these women has not been reported. We hypothesized that endometriosis may impact hepatic gene expression to promote a low BMI. To determine the effect of endometriosis on liver gene expression, we induced endometriosis in female mice by suturing donor mouse endometrium into the peritoneal cavity and measuring the weights of these mice...
September 14, 2016: Biology of Reproduction
Jun Hee Lee, Sang Hun Lee, Hyang Seon Lee, Seung Taek Ji, Seok Yun Jung, Jae Ho Kim, Sun Sik Bae, Sang-Mo Kwon
Adipogenic differentiation of mesenchymal stem cells (MSCs) is critical for metabolic homeostasis and nutrient signaling during development. However, limited information is available on the pivotal modulators of adipogenic differentiation of MSCs. Adaptor protein Lnk (Src homology 2B3 [SH2B3]), which belongs to a family of SH2-containing proteins, modulates the bioactivities of different stem cells, including hematopoietic stem cells and endothelial progenitor cells. In this study, we investigated whether an interaction between insulin-like growth factor-1 receptor (IGF-1R) and Lnk regulated IGF-1-induced adipogenic differentiation of MSCs...
September 2016: Korean Journal of Physiology & Pharmacology
Lars Lind, Johan Sundström, Markus Stenemo, Emil Hagström, Johan Ärnlöv
BACKGROUND: Apart from several established clinical risk factors for atrial fibrillation (AF), a number of biomarkers have also been identified as potential risk factors for AF. None of these have so far been adopted in clinical practice. OBJECTIVE: To use a novel custom-made proteomics chip to discover new prognostic biomarkers for AF risk. METHODS: In two independent community-based cohorts (Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS) study (978 participants without AF, mean age 70...
September 8, 2016: Heart: Official Journal of the British Cardiac Society
Heli Routti, Roger Lille-Langøy, Mari K Berg, Trine Fink, Mikael Harju, Kurt Kristiansen, Pawel Rostkowski, Marte Rusten, Ingebrigt Sylte, Lene Øygarden, Anders Goksøyr
We studied interactions between polar bear peroxisome proliferator-activated receptor gamma (pbPPARG) and selected compounds using a luciferase reporter assay and predictions through molecular docking. Furthermore, we studied adipogenesis by liver and adipose tissue extracts from a polar bear and three synthetic mixtures of contaminants in murine 3T3-L1 preadipocytes and polar bear adipose tissue-derived stem cells (pbASCs). PCB153 and p,p'-DDE antagonized pbPPARG, although their predicted receptor-ligand affinity was weak...
October 4, 2016: Environmental Science & Technology
M Vlychou, J Teh, D Whitwell, N A Athanasou
Hibernoma is a benign adipose tumour that contains foetal brown fat cells. We report a case of hibernoma arising in the left ischium of a 65-year-old female with a past history of ovarian carcinoma. The patient presented with a relatively short history of left sacral/hip pain. Radiologically, the lesion, which was large (5 cm) and sclerotic, had been stable for a number of years. Histologically, it was composed mainly of plump cells with foamy, multivacuolated cytoplasm. These cells showed no reaction for epithelial, melanoma or leucocyte markers but expressed FABP4/aP2 and S100, indicating that they were brown fat cells...
November 2016: Skeletal Radiology
Hiroki Nishimoto, Akihiro Yamamoto, Souhei Furukawa, Satoshi Wakisaka, Takashi Maeda
Adipose tissue-derived adipokines influence a number of organs critical for energy homeostasis and metabolism. One of the most extensively studied adipokines is adiponectin, which exerts anti-diabetic, anti-inflammatory and anti-atherogenic functions on various cell types. CTRP3, a paralog of adiponectin, is a member of the C1q and tumor necrosis factor-related protein (CTRP) superfamily. CTRP3 reduces hepatic triglyceride levels in diet-induced obese (DIO) mice. However, the physiological role of CTRP3 in adipocytes is largely unknown...
September 3, 2016: Cell Biology International
U Harjes, E Bridges, K M Gharpure, I Roxanis, H Sheldon, F Miranda, L S Mangala, S Pradeep, G Lopez-Berestein, A Ahmed, B Fielding, A K Sood, A L Harris
Fatty acid binding protein 4 (FABP4) is a fatty acid chaperone, which is induced during adipocyte differentiation. Previously we have shown that FABP4 in endothelial cells is induced by the NOTCH1 signalling pathway, the latter of which is involved in mechanisms of resistance to antiangiogenic tumour therapy. Here, we investigated the role of FABP4 in endothelial fatty acid metabolism and tumour angiogenesis. We analysed the effect of transient FABP4 knockdown in human umbilical vein endothelial cells on fatty acid metabolism, viability and angiogenesis...
August 29, 2016: Oncogene
Zewen Kelvin Tuong, Rebecca Fitzsimmons, Shu-Ching Mary Wang, Tae Gyu Oh, Patrick Lau, Frederik Steyn, Gethin Thomas, George E O Muscat
RORα is a member of the nuclear receptor (NR) superfamily and analysis of the (global) RORα-deficient mouse model revealed this NR has a role in glycemic control and fat deposition. Therefore, we generated an adipose-specific RORα 'gain of function' mouse model under the control of the fatty acid binding protein 4 (FABP4) promoter to elucidate the function of RORα in adipose tissue. The Tg-FABP4-RORα4 mice demonstrated a shift in fat distribution to non-adipose tissues when challenged with a high fat diet (HFD)...
September 2016: EBioMedicine
Xin-Xing Zhu, Ya-Wei Yan, Demeng Chen, Chun-Zhi Ai, Xifeng Lu, Shan-Shan Xu, Shan Jiang, Gen-Shen Zhong, Dong-Bao Chen, Yi-Zhou Jiang
Long non-coding RNAs (lncRNAs) play an important role in gene regulation and are involving in diverse cellular processes. However, their roles in reprogramming of gene expression profiles during lineage commitment and maturation of mesenchymal stem cells (MSCs) remain poorly understood. In the current study, we characterize the expression of a lncRNA, HoxA-AS3, during the differentiation of MSCs. We showed that HoxA-AS3 is increased upon adipogenic induction of MSCs, while HoxA-AS3 remains unaltered during osteogenic induction...
August 23, 2016: Oncotarget
Negar Zamaninour, Khadijeh Mirzaei, Seyed Ali Keshavarz, Hastimansooreh Ansar, Arash Hossein-Nezhad
Adiposity and its metabolic disturbances could be regulated by adipocyte-specific peroxisome proliferator-activated receptor gamma and fatty acid-binding protein4. Although, these two proteins are mainly expressed in adipose tissues, they can also be expressed in peripheral blood mononuclear cells which could be useful for predicting body composition and blood parameters. Thus, this cross-sectional study was performed during January 2013-January 2014 with 229 women (age range, 22-52 years) who were classified as obese or non-obese...
August 26, 2016: Women & Health
Afiat Berbudi, Jayagopi Surendar, Jesuthas Ajendra, Fabian Gondorf, David Schmidt, Anna-Lena Neumann, Ajeng P F Wardani, Laura E Layland, Linda S Hoffmann, Alexander Pfeifer, Achim Hoerauf, Marc P Hübner
Helminths induce type 2 immune responses and establish an anti-inflammatory milieu in their hosts. This immunomodulation was previously shown to improve diet-induced insulin resistance which is linked to chronic inflammation. In the current study, we demonstrate that infection with the filarial nematode Litomosoides sigmodontis increased the eosinophil number and alternatively activated macrophage abundance within epididymal adipose tissue (EAT) and improved glucose tolerance in diet-induced obese mice in an eosinophil-dependent manner...
August 20, 2016: Journal of Innate Immunity
Wellison Jarles da Silva Diniz, Luiz Lehmann Coutinho, Polyana Cristine Tizioto, Aline Silva Mello Cesar, Caio Fernando Gromboni, Ana Rita Araújo Nogueira, Priscila Silva Neubern de Oliveira, Marcela Maria de Souza, Luciana Correia de Almeida Regitano
Iron (Fe) is an essential mineral for metabolism and plays a central role in a range of biochemical processes. Therefore, this study aimed to identify differentially expressed (DE) genes and metabolic pathways in Longissimus dorsi (LD) muscle from cattle with divergent iron content, as well as to investigate the likely role of these DE genes in biological processes underlying beef quality parameters. Samples for RNA extraction for sequencing and iron, copper, manganese, and zinc determination were collected from LD muscles at slaughter...
2016: PloS One
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