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Yu-Ju Peng, Tang-Long Shen, Yu-Shan Chen, Harry John Mersmann, Bing-Hsien Liu, Shih-Torng Ding
BACKGROUND: Adiponectin (ADN) is an adipokine derived from adipocytes. It binds to adiponectin receptor 1 and 2 (AdipoR1 and R2) to exert its function in regulating whole-body energy homeostasis and inflammatory responses. However, the role of ADN-AdipoR1 signaling in intestinal inflammation is controversial, and its role in the regulation of neutrophils is still unclear. Our goal was to clarify the role of AdipoR1 signaling in colitis and the effects on neutrophils. METHODS: We generated porcine AdipoR1 transgenic mice (pAdipoR1 mice) and induced murine colitis using dextran sulfate sodium (DSS) to study the potential role of AdipoR1 in inflammatory bowel disease...
March 14, 2018: Journal of Biomedical Science
Zhiyong Zhang, Yingxue Li, Xinchun Yang, Lefeng Wang, Li Xu, Qi Zhang
We aimed to investigate the association of 12 extensively studied polymorphisms in adiponectin (ADIPOQ), adiponectin receptor-1 (ADIPOR1) and adiponectin receptor-2 (ADIPOR2) genes with myocardial infarction in Han Chinese. This is a hospital-based, cross-sectional, case-control study, including 717 myocardial infarction patients and 612 controls. Myocardial infarction was confirmed through electrocardiogram/anatomopathological examinations. All polymorphisms met the Hardy-Weinberg equilibrium (p > 0...
March 7, 2018: Gene
Xiaojuan Wang, Jun Li, Wei Tang, Yiqiao Zhao, Xing Li
Background The development of an effective treatment for type 2 diabetes mellitus is urgently needed. This study aimed to investigate the role of micro RNA (miR)-323-3p in regulating the expression of adiponectin receptor 1 (AdipoR1), as well as the insulin secretion and cell function of pancreatic MIN6 β-cells. Methods MIN6 cells were treated with miR-323-3p mimics or inhibitors, and the effects on cell growth, proliferation, mitosis, and insulin secretion were studied. The expression levels of sirtuin-1 (SIRT-1) and AMP-activated protein kinase (AMPK) genes were also assessed...
January 1, 2018: Journal of International Medical Research
Ningbo Xu, Yixin Zhang, Desislava Met Doycheva, Yan Ding, Yiting Zhang, Jiping Tang, Hongbo Guo, John H Zhang
Adiponectin is an important adipocyte-derived plasma protein that has beneficial effects on cardio- and cerebrovascular diseases. A low level of plasma Adiponectin is associated with increased mortality post ischemic stroke; however, little is known about the causal role of Adiponectin as well as its molecular mechanisms in neonatal hypoxia ischemia (HI). In the present study, ten-day-old rat pups were subjected to right common carotid artery ligation followed by 2.5 h hypoxia. Recombinant human Adiponectin (rh-Adiponectin) was administered intranasally 1 h post HI...
February 24, 2018: Neuropharmacology
Amanda K Galan-Davila, Jiyoon Ryu, Kun Dong, Yang Xiao, Zhe Dai, Deling Zhang, Zhi Li, Amanda M Dick, Kevin D Liu, Amrita Kamat, Min Lu, Qunfeng Dong, Feng Liu, Lily Q Dong
Adiponectin is an adipocyte-derived hormone with antidiabetic activities, which include increasing the sensitivity of cells to insulin. Adaptor protein containing pleckstrin homology domain, phosphotyrosine-binding domain, and leucine zipper motif (APPL1) stimulates adiponectin signaling and promotes adiponectin's insulin-sensitizing effects by binding to two adiponectin receptors, AdipoR1 and AdipoR2, and the insulin receptor. In the present study, we report on an alternative splicing variant of APPL1 (APPL1sv) that is highly expressed in mouse liver, pancreas, and spleen tissues...
February 26, 2018: Journal of Biological Chemistry
Anuradha, Amitabh Krishna
The aim of the present study was to evaluate the mechanism by which embryonic development in Cynopterus sphinx is impaired during the period of increased accumulation of white adipose tissue during winter scarcity of food. The change in the mass of white adipose tissue during adipogenesis showed significant positive correlation with the circulating glucose level. But increase in circulating glucose level during the adipogenesis showed negative correlation with circulating progesterone and adiponectin levels...
February 20, 2018: General and Comparative Endocrinology
Leslie A Consitt, Gunjan Saxena, Megan Schaefer
OBJECTIVE: The high molecular weight (HMW) adiponectin isoform is considered the active form of adiponectin and is linked to insulin sensitivity and the reduced risk of developing cardiovascular disease. The purpose of the first study was to determine the effects of age and sex on the plasma HMW adiponectin response to acute hyperinsulinemia, and secondly determine if either endurance or resistance exercise training could affect this response. DESIGN AND PARTICIPANTS: Twenty-six, healthy males (19-84 years) and twenty-six, healthy females (18-76 years) were recruited and matched for BMI to examine the effects of sex and age on the plasma adiponectin response to a 2 hour hyperinsulinemic-euglycemic clamp...
February 7, 2018: Clinical Endocrinology
Yui Takahashi, Rena Watanabe, Yuki Sato, Nana Ozawa, Miho Kojima, Kaho Watanabe-Kominato, Remina Shirai, Kengo Sato, Tsutomu Hirano, Takuya Watanabe
INTRODUCTION: The novel phytohormone, osmotin, has been reported to act like mammalian adiponectin through PHO36/AdipoR1 in various in vitro and in vivo models. However, there have been no reports regarding the precise effects of osmotin on atherosclerosis. METHODS: We assessed the atheroprotective effects of osmotin on inflammatory molecules in human umbilical vein endothelial cells (HUVECs), human leukemic monocyte (THP-1) adhesion, inflammatory responses, and foam cell formation in THP-1-derived macrophages, and the migration, proliferation, and extracellular matrix expression in human aortic smooth muscle cells (HASMCs)...
February 1, 2018: Metabolism: Clinical and Experimental
Linjie Wang, Ke Xue, Yan Wang, Lili Niu, Li Li, Tao Zhong, Jiazhong Guo, Jing Feng, Tianzeng Song, Hongping Zhang
Objective: It is commonly accepted that adiponectin binds to its two receptors to regulate fatty acid metabolism in adipocytes. To better understand their functions in the regulation of intramuscular adipogenesis in goats, we cloned the three genes (AdipoQ, AdipoR1 and AdipoR2) encoding these proteins and detected their mRNA distribution in different tissues. We also determined the role of AdipoQ in the adipogenic differentiation of goat skeletal muscle satellite cells (SMSCs). Methods: SMSCs were isolated using 1 mg/ml Pronase E from the longissimus dorsi muscles of 3-day-old female Nanjiang brown goats...
January 30, 2018: Asian-Australasian Journal of Animal Sciences
E C Muñoz-Muñoz, B J Krause, R Uauy, P Casanello
Maternal obesity is associated with large-for-gestational-age (LGA) neonates and programming of obesity-related cardiovascular disease in the offspring, however, the mechanisms that lead to the later are unclear. Presently, interpretations of NO-dependent changes in vascular function in LGA newborn from obese mothers are conflicting. Adiponectin improves endothelial function by increasing eNOS activity and NO production. We propose that LGAs from obese mothers present a diminished vascular response to adiponectin; thus, affecting eNOS and AMPK activation...
January 27, 2018: Journal of Cellular Physiology
Qingmei Yang, Chensheng Fu, Jing Xiao, Zhibin Ye
Adiponectin (APN) is a protein hormone that is primarily derived from adipocytes. It can also be secreted by renal cells. Hypoadiponectinemia has been documented in patients with hyperuricemia, however, whether soluble uric acid (SUA) regulates the expression of APN and APN receptor 1 (AdipoR1) in renal proximal tubule epithelial cells (PTECs) remains to be elucidated. The present study investigated the expression of APN and AdipoR1 in cultured PTECs that were exposed to SUA through immunofluorescence and western blot analysis...
December 19, 2017: Molecular Medicine Reports
T Komprda, P Ondráčková, M Vícenová, V Rozíková, N Procházková, L Levá, M Faldyna
The present study tested a hypothesis that dietary fish oil (eicosapentaenoic acid+docosahexaenoic acid) in a commonly achievable dose ameliorates a systemic inflammation in pigs. Two groups of pigs of 16 animals each were fed a diet with either 2.5% of fish oil (F) or a control diet with 2.5% of palm oil (P). After 70 days of fattening, eight F and eight P pigs were challenged (F+; P+) i.v. by lipopolysaccharide. After 3 h, all pigs were sacrificed and blood, liver and visceral adipose tissue (VAT) samples were taken...
January 18, 2018: Animal: An International Journal of Animal Bioscience
Gwangho Yoon, Shahid Ali Shah, Tahir Ali, Myeong Ok Kim
Alzheimer's disease is a major neurodegenerative disease characterized by memory loss and cognitive deficits. Recently, we reported that osmotin, which is a homolog of adiponectin, improved long-term potentiation and cognitive functions in Alzheimer's disease mice. Several lines of evidence have suggested that Nogo-A and the Nogo-66 receptor 1 (NgR1), which form a complex that inhibits long-term potentiation and cognitive function, might be associated with the adiponectin receptor 1 (AdipoR1), which is a receptor for osmotin...
January 15, 2018: Molecular Neurobiology
Yaeni Kim, Ji Hee Lim, Min Young Kim, Eun Nim Kim, Hye Eun Yoon, Seok Joon Shin, Bum Soon Choi, Yong-Soo Kim, Yoon Sik Chang, Cheol Whee Park
Adiponectin exerts renoprotective effects against diabetic nephropathy (DN) by activating the AMP-activated protein kinase (AMPK)/peroxisome proliferative-activated receptor- α (PPAR α ) pathway through adiponectin receptors (AdipoRs). AdipoRon is an orally active synthetic adiponectin receptor agonist. We investigated the expression of AdipoRs and the associated intracellular pathways in 27 patients with type 2 diabetes and examined the effects of AdipoRon on DN development in male C57BLKS/J db/db mice, glomerular endothelial cells (GECs), and podocytes...
January 12, 2018: Journal of the American Society of Nephrology: JASN
Jungmi Choi, Hatasu Kobayashi, Hiroko Okuda, Kouji H Harada, Midori Takeda, Hiroyuki Fujimoto, Shunsuke Yamane, Daisuke Tanaka, Shohab Youssefian, Nobuya Inagaki, Akio Koizumi
Adiponectin, a metabolically-active cytokine secreted from adipose tissue, is reported to have anti-apoptotic effects on β-cells as well as anti-hyperglycemic effects through adiponectin receptor signaling. However, the anti-apoptotic effects of adiponectin on β-cells have not been confirmed in established diabetic models, and the anti-hyperglycemic effects and their associated signal cascades remain controversial. To investigate the effects of adiponectin on β-cell protection and its down-stream signaling events, we have generated β-cell-specific rat insulin promoter (RIP)-AdipoR1 transgenic mice (AdipoR1 mice), in which the adiponectin receptor, AdipoR1, is overexpressed in β-cells in a manner synchronous with insulin demand...
2018: PloS One
Badr Alzahrani, Tristan Iseli, Mehdi Ramezani-Moghadam, Vikki Ho, Miriam Wankell, Eun Jin Sun, Liang Qiao, Jacob George, Lionel W Hebbard
Activation of the adiponectin (APN) signaling axis retards liver fibrosis. However, understanding of the role of AdipoR1 and AdipoR2 in mediating this response is still rudimentary. Here, we sought to elucidate the APN receptor responsible for limiting liver fibrosis by employing AdipoR1 and AdipoR2 knock-out mice in the carbon tetrachloride (CCl4) model of liver fibrosis. In addition, we knocked down receptor function in primary hepatic stellate cells (HSCs) in vitro. Following the development of fibrosis, AdipoR1 and AdipoR2 KO mice had no quantitative difference in fibrosis by Sirius red staining...
December 10, 2017: Biochimica et Biophysica Acta
Fiorella Campo-Verde-Arbocco, José D López-Laur, Leonardo R Romeo, Noelia Giorlando, Flavia A Bruna, David E Contador, Gastón López-Fontana, Flavia E Santiano, Corina V Sasso, Leila E Zyla, Constanza M López-Fontana, Juan C Calvo, Rubén W Carón, Virginia Pistone Creydt
We evaluated the effects of conditioned media (CMs) of human adipose tissue from renal cell carcinoma located near the tumor (hRATnT) or farther away from the tumor (hRATfT), on proliferation, adhesion and migration of tumor (786-O and ACHN) and non-tumor (HK-2) human renal epithelial cell lines. Human adipose tissues were obtained from patients with renal cell carcinoma (RCC) and CMs from hRATnT and hRATfT incubation. Proliferation, adhesion and migration were quantified in 786-O, ACHN and HK-2 cell lines incubated with hRATnT-, hRATfT- or control-CMs...
November 7, 2017: Oncotarget
C Fu, L Liu, F Li
An experiment was conducted to investigate the effect of acetate treatment on lipid metabolism in rabbits. New Zealand Rabbits (30 days, n=80) randomly received a subcutaneous injection (2 ml/injection) of 0, 0.5, 1.0 or 2.0 g/kg per day body mass acetate (dissolved in saline) for 4 days. Our results showed that acetate induced a dose-dependent decrease in shoulder adipose (P0.05), acetate treatment significantly decreased the plasma adiponectin, insulin and triglyceride concentrations (P<0.05). In adipose, acetate injection significantly up-regulated the gene expression of peroxisome proliferator-activated receptor gamma (PPARγ), CCAAT/enhancer-binding protein α (C/EBPα), differentiation-dependent factor 1 (ADD1), adipocyte protein 2 (aP2), carnitine palmitoyltransferase 1 (CPT1), CPT2, hormone-sensitive lipase (HSL), G protein-coupled receptor (GPR41), GPR43, adenosine monophosphate-activated protein kinase α1 (AMPKα1), adiponectin receptor (AdipoR1), AdipoR2 and leptin receptor...
December 4, 2017: Animal: An International Journal of Animal Bioscience
Jiao Liu, Guang Li, Chuang Chen, Dechang Chen, Qingshan Zhou
BACKGROUND: High mortality rate of critically-ill patients could be induced by sepsis and septic shock, which is the extremely life threatening. The purpose of this work is to identify and evaluate the potential regulatory mechanism of LPS-induced inflammation associated with miR-6835 and lipid rafts in HUVECs. METHODS: The 3' UTR luciferase activity of AdipoR1 was detected, which was predicted the potential target gene of miR-6835. Moreover, the treated HUVECs with or without inhibitors or mimics of miR-6835 were used...
2017: PloS One
Sarah Nicolas, Julie Cazareth, Hadi Zarif, Alice Guyon, Catherine Heurteaux, Joëlle Chabry, Agnès Petit-Paitel
We recently reported that increased levels of Adiponectin (ApN) in the brain led to microglia phenotype and activation state regulation, thus reducing both global brain inflammation and depressive-like behaviors in mice. Apart from this, little is known on ApN molecular effects on microglia, although these cells are crucial in both physiological and pathological processes. Here we fill this gap by studying the effects and targets of ApN toward neuroinflammation. Our findings suggest that ApN deficiency in mice leads to a higher sensitivity of mice to neuroinflammation that is due to enhanced microglia responsiveness to a pro-inflammatory challenge...
2017: Frontiers in Cellular Neuroscience
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