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https://www.readbyqxmd.com/read/28522293/direct-action-of-adiponectin-ameliorates-increased-androgen-synthesis-and-reduces-insulin-receptor-expression-in-the-polycystic-ovary
#1
Anusha Singh, Puran Bora, Amitabh Krishna
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder of reproductive age females, leading to infertility. Despite extensive research, the exact pathophysiology and treatment are lacking. The aim of the current study was to evaluate the direct role of adiponectin either alone or together with luteinizing hormone (LH) on sex hormone synthesis and changes in insulin receptor (IR) in the ovary of dehydroepiandrosterone (DHEA)-treated PCOS-mice. Immunohistochemical study showed decreased expression of adiponectin receptor (AdipoR1) in PCOS-ovary which correlated with increased synthesis of androgen and decreased expression of IR...
May 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28513775/adiponectin-inhibits-oxidization-induced-differentiation-of-t-helper-cells-through-inhibiting-costimulatory-cd40-and-cd80
#2
Y Xiao, T Deng, Z Shang, D Wang
Adiponectin is a multifunctional adipokine that has several oligomeric forms in the blood stream, which broadly regulates innate and acquired immunity. Therefore, in this study, we aimed to observe the differentiation of T helper (Th) cells and expression of costimulatory signaling molecules affected by adiponectin. The mRNA and protein expression levels of adiponectin and its receptors in oxidized low density lipoprotein cholesterol-treated endothelial cells were assayed by real time PCR and immunofluorescence...
May 15, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28498357/adiponectin-is-involved-in-connective-tissue-growth-factor-induced-proliferation-migration-and-overproduction-of-the-extracellular-matrix-in-keloid-fibroblasts
#3
Limin Luo, Jun Li, Han Liu, Xiaoqing Jian, Qianlei Zou, Qing Zhao, Qu Le, Hongdou Chen, Xinghua Gao, Chundi He
Adiponectin, an adipocyte-derived hormone, exerts pleiotropic biological effects on metabolism, inflammation, vascular homeostasis, apoptosis and immunity. Recently, adiponectin has been suggested to attenuate the progression of human dermal fibrosis. Connective tissue growth factor (CTGF) is induced in keloids and is thought to be participated in the formation of keloid fibrosis. However, the roles played by adiponectin in keloids remain unclear. In this study, we explored the effects of adiponectin on CTGF-induced cell proliferation, migration and the deposition of extracellular matrix (ECM) and their associated intracellular signalling pathways in keloid fibroblasts (KFs)...
May 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28442988/adiponectin-receptors-are-less-sensitive-to-stress-in-a-transgenic-mouse-model-of-alzheimer-s-disease
#4
Zoltán P Várhelyi, János Kálmán, Zita Oláh, Eszter V Ivitz, Eszter K Fodor, Miklós Sántha, Zsolt L Datki, Magdolna Pákáski
Background: Adiponectin and leptin are implicated in the initiation and pathomechanism of Alzheimer's disease (AD). The serum concentrations of these adipokines has been extensively studied in AD, however little is known about their receptors in this disease. Objective: We developed a novel approach to examine whether the receptors of adiponectin (AdipoR1 and -R2) and/or leptin (LepR) can contribute to AD pathomechanism. To achieve this, we investigated the effect of both genetic and environmental factors associated with AD on the expression of these receptors...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28440504/adipor1-mediated-mir-3908-inhibits-glioblastoma-tumorigenicity-through-downregulation-of-stat2-associated-with-the-ampk-sirt1-pathway
#5
Xiangming Liu, Jinglong Chen, Jinqian Zhang
A prospective method of treatment for cancer is to inhibit oncogene signaling pathways with microRNA (miRNA or miR). In the present study, whether the expression of STAT2, AdipoR1/AMPK/SIRT1 pathway of glioma is regulated by miR-3908 was explored. To confirm whether the predicted miR-3908 is matched with STAT2 and AdipoR1, 3'UTR luciferase activity of STAT2 and AdipoR1 was assessed. In the presence of the mimics or inhibitors of miR-3908, cell function of glioma cells, such as proliferation, growth, migration, invasion and apoptosis were analyzed...
April 20, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28406532/endometrial-gene-expression-in-primiparous-dairy-cows-at-the-end-of-the-voluntary-waiting-period-is-affected-by-nutrition-total-mixed-ration-vs-increasing-levels-of-herbage-allowance
#6
A L Astessiano, M Carriquiry, D A Mattiauda, M L Adrien, P Chilibroste, A Meikle
The study postulated that differential nutritional management during the early lactation period would be reflected in endometrial expression of genes related to embryo growth at the end of the voluntary waiting period. Thus, the effect of the combined use of total mixed ration (TMR) and grazing under different herbage allowances during the first 75 days post-partum (DPP) on endometrial gene expression was evaluated in primiparous dairy cows. Cows were blocked by body weight, age and body condition score and randomly assigned to three grazing treatments: high (HA, 30 kg DM per cow per day), medium (MA, 15 kg DM per cow per day) and low (LA, 7...
April 12, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28402446/adiponectin-and-its-receptors-in-diabetic-kidney-disease-molecular-mechanisms-and-clinical-potential
#7
Dongqing Zha, Xiaoyan Wu, Ping Gao
Diabetic kidney disease (DKD) is a major complication for diabetic patients. Adiponectin is an insulin sensitizer and anti-inflammatory adipokine and is mainly secreted by adipocytes. Two types of adiponectin receptors have been identified, AdipoR1 and AdipoR2. In both type 1 (T1D) and type 2 diabetes (T2D) patients with DKD elevated adiponectin serum levels have been observed and adiponectin serum level is a prognostic factor of end stage renal disease. Renal insufficiency and tubular injury possibly play a contributory role in increases in serum and urinary adiponectin levels in diabetic nephropathy by either increasing biodegradation or elimination of adiponectin in the kidneys, or enhancing production of adiponectin in adipose tissue...
April 11, 2017: Endocrinology
https://www.readbyqxmd.com/read/28356549/expression-of-adiponectin-receptor-1-and-prognosis-of-epithelial-ovarian-cancer-patients
#8
Xiahui Li, Zhe Yu, Liping Fang, Fang Liu, Kui Jiang
BACKGROUND Adiponectin receptor-1 (AdipoR1) has been reported to be associated with the risk of obesity-associated malignancies, including epithelial ovarian cancer (EOC). The aim of this study was to determine if AdipoR1 could serve as a prognosis indicator for patients with EOC. MATERIAL AND METHODS In this study, expression of AdipoR1 in 73 EOC patients consecutively admitted to our hospital was detected by immunohistochemical staining. Univariate and multivariate analyses were performed to assess the relationship between AdipoR1 expression level and progression-free survival (PFS) and overall survival (OS) rates in patients...
March 30, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28338883/the-effects-of-oleanolic-acid-on-atherosclerosis-in-different-animal-models
#9
Hanqiong Luo, Jine Liu, Qiong Ouyang, Chunxiao Xuan, Lanlan Wang, Tingting Li, Jun Liu
In the present study, three animal models, including C57BL/6J mice, low-density lipoprotein receptor knockout (LDLR-/-) mice, and rabbit that mimicked atherosclerosis, were established to investigate the inhibitory effect of oleanolic acid (OA) on atherosclerosis. In rabbit model, serum total cholesterol (TC), triglyceride, low density lipoprotein cholesterol (LDL-C), and high density lipoprotein cholesterol (HDL-C) were measured. Carotid artery lesions were isolated for histological analysis. The red oil O and hematoxylin-eosin staining in liver were examined...
March 4, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28330882/adiponectin-and-resistin-potential-metabolic-signals-affecting-hypothalamo-pituitary-gonadal-axis-in-females-and-males-of-different-species
#10
REVIEW
Agnieszka Rak, Namya Mellouk, Pascal Froment, Joëlle Dupont
Adipokines, including adiponectin and resistin, are cytokines produced mainly by the adipose tissue. They play a significant role in metabolic functions that regulate the insulin sensitivity and inflammation. Alterations in adiponectin and resistin plasma levels, or their expression in metabolic and gonadal tissues, are observed in some metabolic pathologies, such as obesity. Several studies have shown that these two hormones and the receptors for adiponectin, AdipoR1 and AdipoR2 are present in various reproductive tissues in both sexes of different species...
June 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28329765/structural-insights-into-adiponectin-receptors-suggest-ceramidase-activity
#11
Ieva Vasiliauskaité-Brooks, Remy Sounier, Pascal Rochaix, Gaëtan Bellot, Mathieu Fortier, François Hoh, Luigi De Colibus, Chérine Bechara, Essa M Saied, Christoph Arenz, Cédric Leyrat, Sébastien Granier
Adiponectin receptors (ADIPORs) are integral membrane proteins that control glucose and lipid metabolism by mediating, at least in part, a cellular ceramidase activity that catalyses the hydrolysis of ceramide to produce sphingosine and a free fatty acid (FFA). The crystal structures of the two receptor subtypes, ADIPOR1 and ADIPOR2, show a similar overall seven-transmembrane-domain architecture with large unoccupied cavities and a zinc binding site within the seven transmembrane domain. However, the molecular mechanisms by which ADIPORs function are not known...
April 6, 2017: Nature
https://www.readbyqxmd.com/read/28327197/lipid-raft-mediated-mir-3908-inhibition-of-migration-of-breast-cancer-cell-line-mcf-7-by-regulating-the-interactions-between-adipor1-and-flotillin-1
#12
Yuan Li, Fei Shan, Jinglong Chen
BACKGROUND: The mechanisms of lipid raft regulation by microRNAs in breast cancer are not fully understood. This work focused on the evaluation and identification of miR-3908, which may be a potential biomarker related to the migration of breast cancer cells, and elucidates lipid-raft-regulating cell migration in breast cancer. METHODS: To confirm the prediction that miR-3908 is matched with AdipoR1, we used 3'-UTR luciferase activity of AdipoR1 to assess this. Then, human breast cancer cell line MCF-7 was cultured in the absence or presence of the mimics or inhibitors of miR-3908, after which the biological functions of MCF-7 cells were analyzed...
March 21, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28293385/adiporon-may-be-benefit-for-atherosclerosis-prevention
#13
EDITORIAL
Maryam Esfahani, Nooshin Shabab, Massoud Saidijam
Atherosclerosis has serious role in coronary arteries disease, so it is important to establish effective strategies for prevention or even treatment of atherosclerosis. Adiponectin, as one of the most abundant adipokines, has insulin sensitivity, anti-inflammatory and anti-atherogenic properties. Disturbed adiponectin actions through its receptor, (AdipoR1 and AdipoR2) may be involved in atherosclerosis development. Some adiponectin effects are mediated by AMPK and PPAR-α signaling. AdipoRon is an orally active synthetic molecule which can bind to AdipoR1, Adipo R2 and activate them...
February 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28288470/circulating-concentrations-of-adipocytokines-and-their-receptors-in-the-isolated-corpus-cavernosum-and-femoral-artery-from-trained-rats-on-a-high-fat-diet
#14
Amanda C S Sponton, Fábio H Silva, Hygor N Araujo, Carmem P Valgas da Silva, Camila de Moraes, Edson Antunes, Angelina Zanesco, Maria A Delbin
BACKGROUND: The aim of the present study was to evaluate different signaling pathways by which exercise training would interfere in endothelial function in obesity. Therefore, we examined adipocytokine levels and their receptors in the corpus cavernosum and femoral artery from trained rats on a high-fat diet. METHODS: Functional experiments were performed in control sedentary and trained rats, and sedentary (h-SD) and trained male Wistar rats on a high-fat diet (h-TR)...
2017: Journal of Vascular Research
https://www.readbyqxmd.com/read/28285359/globular-adiponectin-inhibits-leptin-stimulated-esophageal-adenocarcinoma-cell-proliferation-via-adiponectin-receptor-2-mediated-suppression-of-uhrf1
#15
Jun Wang, Yan Cheng, Xiaoran Yin, Jie Wu, Yumei Luo, Jing Wu, Jia Di, Dong Liu, Yahui Huang, Rong Zhang, Jun Zhang
Esophageal adenocarcinoma (EAC) is one of the most common malignancies in the world which is associated the increased prevalence of obesity. In the context of obesity, leptin can directly contribute to progression of EAC. Adiponectin inhibits leptin-induced oncogenic signaling in EAC cells. However, the exact molecular mechanisms linking obesity, adipokines, and EAC remain far from completely understood. In the present study, we tested the role of ubiquitin-like with PHD and ring finger domains 1 (UHRF1) in adiponectin-induced protective effects against leptin-induced EAC cell proliferation...
March 11, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28271033/inducible-overexpression-of-adiponectin-receptors-highlight-the-roles-of-adiponectin-induced-ceramidase-signaling-in-lipid-and-glucose-homeostasis
#16
William L Holland, Jonathan Y Xia, Joshua A Johnson, Kai Sun, Mackenzie J Pearson, Ankit X Sharma, Ezekiel Quittner-Strom, Trevor S Tippetts, Ruth Gordillo, Philipp E Scherer
OBJECTIVE: Adiponectin and the signaling induced by its cognate receptors, AdipoR1 and AdipoR2, have garnered attention for their ability to promote insulin sensitivity and oppose steatosis. Activation of these receptors promotes the deacylation of ceramide, a lipid metabolite that appears to play a causal role in impairing insulin signaling. METHODS: Here, we have developed transgenic mice that overexpress AdipoR1 or AdipoR2 under the inducible control of a tetracycline response element...
March 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/28262215/aerobic-exercise-suppresses-atherosclerosis-through-adiponectin-nuclear-transcription-factor-%C3%AE%C2%BAb-pathway-in-apolipoprotein-e-deficient-mice
#17
Weidong Wu, Haiying Wang, Guangfa Jiao, Jingjing Yue, Guowei Wang
BACKGROUND: We aimed to investigate the therapeutic effect of aerobic exercise on atherosclerosis (AS) in apolipoprotein E-deficient mice and the adiponectin (ApN)-nuclear transcription factor κB (NF-κB) pathway involved in the related anti-inflammation. MATERIALS AND METHODS: ApoE-deficient mice with AS (AS+C), and ApoE-deficient mice with AS and aerobic exercise (AS+E) were investigated for body weight and visceral fat. Pathomorphology of the aortic vascular wall was qualitatively and quantitatively evaluated with hematoxylin-eosin staining...
March 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28260395/a-potent-peptide-as-adiponectin-receptor-1-agonist-to-against-fibrosis
#18
Lingman Ma, Zhen Zhang, Xiaowen Xue, Yumeng Wan, Boping Ye, Kejiang Lin
Fibrotic diseases have become a major cause of death in the developed world. AdipoR1 agonists are potent inhibitors of fibrotic responses. Here, we focused on the in silico identification of novel AdipoR1 peptide agonists. A homology model was constructed to predict the 3D structure of AdipoR1. By docking to known active peptides, the putative active site of the model was further explored. A virtual screening study was then carried out with a set of manually designed peptides using molecular docking. Peptides with high docking scores were then evaluated for their anti-fibrotic properties...
December 2017: Journal of Enzyme Inhibition and Medicinal Chemistry
https://www.readbyqxmd.com/read/28258256/decreased-adiponectin-mediated-signaling-through-the-adipor2-pathway-is-associated-with-carotid-plaque-instability
#19
Karina Gasbarrino, Huaien Zheng, Anouar Hafiane, John P Veinot, Chi Lai, Stella S Daskalopoulou
BACKGROUND AND PURPOSE: Adiponectin, the most abundantly secreted anti-inflammatory adipokine, protects against all stages of atherosclerotic plaque formation by acting on its receptors, AdipoR1 (adiponectin receptor 1) and AdipoR2 (adiponectin receptor 2). Through binding of AdipoR1, adiponectin leads to the activation of the AMPK (adenosine monophosphate-activated protein kinase) pathway, whereas stimulation of PPAR-α (peroxisome proliferator-activated receptor-α) is attributed to the binding of AdipoR2...
March 3, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28258220/adiponectin-confers-protection-from-acute-colitis-and-restricts-a-b-cell-immune-response
#20
Stephanie Obeid, Miriam Wankell, Berenice Charrez, Jade Sternberg, Roxane Kreuter, Saeed Esmaili, Mehdi Ramezani-Moghadam, Carol Devine, Scott Read, Prithi Bhathal, Andreas Lopata, Golo Ahlensteil, Liang Qiao, Jacob George, Lionel Hebbard
Adiponectin demonstrates beneficial effects in various metabolic diseases, including diabetes, and in bowel cancer. Recent data also suggest a protective role in colitis. However, the precise molecular mechanisms by which adiponectin and its receptors modulate colitis and the nature of the adaptive immune response in murine models are yet to be elucidated. Adiponectin knock-out mice were orally administered dextran sulfate sodium for 7 days and were compared with wild-type mice. The severity of disease was analyzed histopathologically and through cytokine profiling...
April 21, 2017: Journal of Biological Chemistry
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