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https://www.readbyqxmd.com/read/28873415/proliferative-endocrine-effects-of-adipose-tissue-from-obese-animals-on-mcf7-cells-are-ameliorated-by-resveratrol-supplementation
#1
Christopher F Theriau, O'Llenecia S Sauvé, Marie-Soleil Beaudoin, David C Wright, Michael K Connor
Obesity is clearly associated with an increased risk of breast cancer in postmenopausal women. The purpose was to determine if obesity alters the adipocyte adipokine secretion profile, thereby altering the adipose-dependent paracrine/endocrine growth microenvironment surrounding breast cancer cells (MCF7). Additionally, we determined whether resveratrol (RSV) supplementation can counteract any obesity-dependent effects on breast cancer tumor growth microenvironment. Obese ZDF rats received standard chow diet or diet supplemented with 200 mg/kg body weight RSV...
2017: PloS One
https://www.readbyqxmd.com/read/28870804/high-glucose-instigates-tubulointerstitial-injury-by-stimulating-hetero-dimerization-of-adiponectin-and-angiotensin-ii-receptors
#2
Dongqing Zha, Huaiyan Cheng, Weiwei Li, Yizhe Wu, Xiaoning Li, Lian Zhang, Ying-Hong Feng, Xiaoyan Wu
Abnormal expression and dysfunction of adiponectin and the cognate receptors are involved in diabetes and diabetic kidney disease (DKD), whereas angiotensin receptor blockers (ARBs) and angiotensin-converting enzyme inhibitors (ACEIs) alleviate diabetic albuminuria and prevent development of DKD through upregulation of adiponectin expression. Here we report that high glucose stimulates expression of angiotensin II (AngII) receptors (AT1 and AT2) in renal proximal tubular epithelial cells (NRK-52E). These receptors underwent hetero-dimerization with adiponectin receptor AdipoR1 and AdipoR2, respectively...
September 1, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28843075/expression-of-adiponectin-and-its-receptors-adipor1-and-adipor2-in-goat-ovary-and-its-effect-on-oocyte-nuclear-maturation-in%C3%A2-vitro
#3
Bruna S P Oliveira, Joana A S Costa, Elizabete T Gomes, Diogo M F Silva, Sandra M Torres, Pedro L J Monteiro, Antônio S Santos Filho, Maria Madalena P Guerra, Gustavo F Carneiro, Aurea Wischral, André M Batista
Adiponectin is an adipokine secreted primarily by adipocytes and is involved in the control of male and female reproductive functions. Circulating levels of adiponectin are inversely correlated with body fat mass, and its biological effects are predominantly mediated through two receptors, AdipoR1 and AdipoR2. The aim of the present study was to verify the expression of the adiponectin system (adiponectin and its receptors, AdipoR1 and AdipoR2) in goat ovary using qPCR and immunohistochemistry analyses and further investigate the in vitro effects of recombinant adiponectin (5 μg/mL and 10 μg/mL) on goat oocyte nuclear maturation...
August 18, 2017: Theriogenology
https://www.readbyqxmd.com/read/28837879/telmisartan-ameliorates-adipor1-and-adipor2-expression-via-ppar-%C3%AE-activation-in-the-coronary-artery-and-vsmcs
#4
Xuhua Shen, Hongwei Li, Weiping Li, Xing Wu, Zhijun Sun, Xiaosong Ding
The effects of telmisartan on insulin-resistant properties and expression of adiponectin receptors (AdipoRs) were investigated. A diabetic rat model was established using a high-fat diet and streptozotocin (25mg/kg) and primary rat coronary vascular smooth muscle cells (VSMCs) were used to elucidate the underlying mechanisms. The diabetic rats were insulin-resistant and exhibited weight gain, elevated blood pressures, and increased plasma triglyceride levels. These manifestations were ameliorated by elmisartan treatment...
August 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28811200/globular-adiponectin-reverses-osteo-sarcopenia-and-altered-body-composition-in-ovariectomized-rats
#5
Shyamsundar Pal China, Subhashis Pal, Sourav Chattopadhyay, Konica Porwal, Sapana Kushwaha, Sharmishtha Bhattacharyya, Monika Mittal, Anagha A Gurjar, Tarun Barbhuyan, Abhishek K Singh, Arun K Trivedi, Jiaur R Gayen, Sabyasachi Sanyal, Naibedya Chattopadhyay
Adiponectin regulates various metabolic processes including glucose flux, lipid breakdown and insulin response. We recently reported that adiponectin receptor1 (adipoR1) activation by a small molecule reverses osteopenia in leptin receptor deficient db/db (diabetic) mice. However, the role of adiponectin in bone metabolism under the setting of post-menopausal (estrogen-deficiency) osteopenia and associated metabolic derangements has not been studied. Here, we studied the therapeutic effect of the globular form of adiponectin (gAd), which is predominantly an adipoR1 agonist, in aged ovariectomized (OVX) rats and compared it with standard-of-care anti-osteoporosis drugs...
August 12, 2017: Bone
https://www.readbyqxmd.com/read/28804986/effects-of-hydroxycitric-acid-on-lipid-droplet-accumulation-in-chicken-embryos
#6
Mengling Peng, Longlong Li, Lei Yu, Chongyang Ge, Haitian Ma
This study was conducted to determine the impact of (-)-hydroxycitric acid ((-)-HCA) on biochemical indices and lipid metabolism parameters in chicken embryos. Two hundred and forty fertilized eggs were divided into six groups and injected with (-)-HCA at concentrations of 0, 0.1, 0.5, 1.0, 10.0 and 50 mg/kg (n = 40). After 19 days of incubation, serum and liver were collected for analysis of biochemical indices and lipid metabolism parameters. Results showed no significant differences on serum biochemical indices: 1-50 mg/kg (-)-HCA significantly increased serum glucose and hepatic glycogen contents (P < 0...
August 14, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28780351/down-regulation-of-lncrna-kcnq1ot1-protects-against-myocardial-ischemia-reperfusion-injury-following-acute-myocardial-infarction
#7
Xin Li, Yingnan Dai, Shujun Yan, Yanli Shi, Baihe Han, Jingxiu Li, Li Cha, Jianjun Mu
This study aimed to investigate the protective effects of long non-coding RNA KCNQ1OT1 against myocardial ischemia/reperfusion (I/R) injury following acute myocardial infarction, as well as its regulatory mechanism. We used the cardiac muscle H9c2 cells under condition of oxygen glucose deprivation followed by reperfusion (OGD/R) to induce myocardial I/R injury. Then H9C2 cells were transfected with si-NC, si-KCNQ1OT1, pc-NC, pc-KCNQ1OT1, si-AdipoR1 and si-AdipoR2, respectively. The myocardial cell viability and apoptosis were respectively detected...
August 2, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28767622/adiponectin-down-regulates-tnf-%C3%AE-expression-in-degenerated-intervertebral-discs
#8
Bin Yuan, Liangliang Huang, Ming Yan, Shilei Zhang, Yongfeng Zhang, Boquan Jin, Ying Ma, Zhuojing Luo
STUDY DESIGN: Given the results of previous in vitro investigations of the expression patterns of adiponectin and its receptors in healthy and degenerated intervertebral discs (IVDs), we studied the effects of adiponectin on TNF-α production in degenerated nucleus pulposus (NP) cells and analyzed the association between adiponectin levels in IVD tissues and IVD Pfirrmann grades. OBJECTIVE: investigate the potential role of adiponectin in the pathogenesis of IVD degeneration...
August 1, 2017: Spine
https://www.readbyqxmd.com/read/28763559/adiponectin-mediates-dietary-omega-3-long-chain-polyunsaturated-fatty-acid-protection-against-choroidal-neovascularization-in-mice
#9
Zhongjie Fu, Raffael Liegl, Zhongxiao Wang, Yan Gong, Chi-Hsiu Liu, Ye Sun, Bertan Cakir, Samuel B Burnim, Steven S Meng, Chatarina Löfqvist, John Paul SanGiovanni, Ann Hellström, Lois E H Smith
Purpose: Neovascular age-related macular degeneration (AMD) is a major cause of legal blindness in the elderly. Diets with omega3-long-chain-polyunsaturated-fatty-acid (ω3-LCPUFA) correlate with a decreased risk of AMD. Dietary ω3-LCPUFA versus ω6-LCPUFA inhibits mouse ocular neovascularization, but the underlying mechanism needs further exploration. The aim of this study was to investigate if adiponectin (APN) mediated ω3-LCPUFA suppression of neovessels in AMD. Methods: The mouse laser-induced choroidal neovascularization (CNV) model was used to mimic some of the inflammatory aspect of AMD...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28758149/adiponectin-and-its-hydrolase-activated-receptors
#10
Ankit X Sharma, William L Holland
The relevance of adiponectin to insulin sensitivity has been elucidated over the last two decades. As a promoter of ceramide degradation, it works through its cognate receptors, AdipoR1 and AdipoR2, to alter bioactive sphingolipid species. Adiponectin diminishes the accumulation of ceramide, a lipid metabolite which can play a causal role in obesity-induced insulin resistance. Concurrently, adiponectin stimulates the production of sphingosine-1-phosphate (S1P), a cyto-protective molecule that accentuates adiponectin's positive metabolic effects...
June 2017: Journal of Nature and Science
https://www.readbyqxmd.com/read/28752907/down-regulation-of-protective-genes-is-associated-with-cellular-and-antibody-mediated-rejection
#11
Hui Tzu Lin-Wang, Reginaldo Cipullo, Jarbas J Dinkhuysen, Marco A Finger, João M Rossi, Edileide B Correia, Mário H Hirata
Despite advances in immunosuppressive therapy, rejection still remains the main obstacle to a successful transplant. This study aims to explore the gene expression profile of the rejection process in order to decrease the number of unnecessary endomyocardial biopsies in stable patients. METHODS: A total of 300 formalin-fixed and paraffin-embedded (FFPE) endomyocardial biopsies sampled from 63 heart allograft recipients were included in this study. Acute cellular rejection (ACR) and antibody-mediated rejection (AMR) were diagnosed by histological analysis and immunohistochemical C4d staining, respectively...
July 28, 2017: Clinical Transplantation
https://www.readbyqxmd.com/read/28733350/adiponectin-limits-differentiation-and-trophoblast-invasion-in-human-endometrial-cells
#12
Fabien Duval, Esther Dos Santos, Hadia Moindjie, Valérie Serazin, Nelly Swierkowski-Blanchard, François Vialard, Marie-Noëlle Dieudonné
Successful human embryo implantation requires a proper differentiation of endometrial stromal cells (ESCs) into decidual cells, during a process called decidualization. ESCs express specific molecules, as prolactin, insulin-like growth factor-binding protein-1 (IGFBP-1), and connexin-43. Decidual cells are also involved in the control of trophoblast invasion, by secreting various factors, as matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs). Adiponectin is an adipokine with insulin-sensitizing, anti-inflammatory, and anti-proliferative effects...
July 21, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28721137/beneficial-effects-of-n-3-polyunsaturated-fatty-acids-on-adiponectin-levels-and-adipor-gene-expression-in-patients-with-type-2-diabetes-mellitus-a-randomized-placebo-controlled-double-blind-clinical-trial
#13
Maryam Mazaherioun, Ahmad Saedisomeolia, Mohammad Hassan Javanbakht, Fariba Koohdani, Mohammad Reza Eshraghian, Mahmoud Djalali
INTRODUCTION: There is evidence that n-3 polyunsaturated fatty acids (n-3 PUFAs) exert beneficial effects to improve type 2 diabetes mellitus (T2DM), but its complications remain poorly understood. Hypoadiponectinemia is one of the important mechanisms responsible for T2DM which necessitates developing novel therapeutic strategies. We aimed to determine the effect of n-3 PUFA supplementation on circulating adiponectin and mRNA expression of adiponectin receptors (AdipoR1, AdipoR2) and Sirt-1 in T2DM patients...
June 2017: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/28676553/voluntary-physical-activity-counteracts-the-proliferative-tumor-growth-microenvironment-created-by-adipose-tissue-via-high-fat-diet-feeding-in-female-rats
#14
Christopher F Theriau, Michael K Connor
The adipokine secretion profile created from adipose tissue may represent the molecular mechanism behind the obesity-breast cancer association. Two adipokines, adiponectin (ADIPO), and leptin (LEP), are altered with obesity and exert antagonistic effects on breast cancer proliferation. We set out to determine whether the adipose-dependent tumor promoting growth environment created by a high-fat diet (HFD) in female Sprague-Dawley rats is altered compared to established responses in male rats and whether voluntary physical activity (PA) ameliorates any HFD-dependent effects...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28670196/downregulation-of-adipor1-is-associated-with-increased-circulating-adiponectin-levels-in-serbian-chronic-kidney-disease-patients
#15
Miron Sopić, Jelena Joksić, Vesna Spasojević-Kalimanovska, Nataša Bogavac-Stanojević, Sanja Simić-Ogrizović, Milica Kravljača, Zorana Jelić Ivanović
BACKGROUND: Since the rise in plasma adiponectin levels in chronic kidney disease (CKD) patients has not yet been elucidated, we sought to investigate if patients on hemodialysis (HD) have altered expression of adiponectin receptors in peripheral blood mononuclear cells (PBMCs) compared to healthy subjects. METHODS: This study included 31 patients with chronic kidney disease on HD and 33 healthy subjects (CG). Circulating adiponectin levels were measured by ELISA while AdipoR1 and AdipoR2 mRNA levels in PBMCs were determined by real-time PCR...
October 2016: Journal of Medical Biochemistry
https://www.readbyqxmd.com/read/28635626/adiponectin-a-therapeutic-target-for-obesity-diabetes-and-endothelial-dysfunction
#16
REVIEW
Arunkumar E Achari, Sushil K Jain
Adiponectin is the most abundant peptide secreted by adipocytes, whose reduction plays a central role in obesity-related diseases, including insulin resistance/type 2 diabetes and cardiovascular disease. In addition to adipocytes, other cell types, such as skeletal and cardiac myocytes and endothelial cells, can also produce this adipocytokine. Adiponectin effects are mediated by adiponectin receptors, which occur as two isoforms (AdipoR1 and AdipoR2). Adiponectin has direct actions in liver, skeletal muscle, and the vasculature...
June 21, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28633944/gene-expression-analysis-identify-a-metabolic-and-cell-function-alterations-as-a-hallmark-of-obesity-without-metabolic-syndrome-in-peripheral-blood-a-pilot-study
#17
Daniel Antonio de Luis, Raquel Almansa, Rocío Aller, Olatz Izaola, E Romero
BACKGROUND: Understanding molecular basis involved in overweight is an important first step in developing therapeutic pathways against excess in body weight gain. OBJECTIVE: The purpose of our pilot study was to evaluate the gene expression profiles in the peripheral blood of obese patients without other metabolic complications. DESIGN: A sample of 17 obese patients without metabolic syndrome and 15 non obese control subjects was evaluated in a prospective way...
June 10, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28585210/adiponectin-resistance-in-obesity
#18
REVIEW
Atilla Engin
The decrease in adiponectin levels are negatively correlated with chronic subclinical inflammation markers in obesity. The hypertrophic adipocytes cause obesity-linked insulin resistance and metabolic syndrome. Furthermore, macrophage polarization is a key determinant regulating adiponectin receptor (AdipoR1/R2) expression and differential adiponectin-mediated macrophage inflammatory responses in obese individuals. In addition to decrease in adiponectin concentrations, the decline in AdipoR1/R2 mRNA expression leads to a decrement in adiponectin binding to cell membrane, and this turns into attenuation in the adiponectin effects...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28544314/low-intensity-endurance-exercise-plus-nandrolone-decanoate-modulates-cardiac-adiponectin-and-its-receptors
#19
A Karimi, S Joukar, H Najafipour, Y Masoumi-Ardakani, B Shahouzehi
Vast adverse effects of anabolic-androgenic steroids (AASs) on athletes' cardiovascular systems have been reported. However, there is still a lack of adequate information regarding the pathways and mechanisms involved. We tested the hypothesis that adiponectin and its receptors in the heart may be affected by long-term use of AASs alongside exercising. Male Wistar rats were randomized into the control (CTL), exercise (EX), nandrolone (Nan), arachis (Arach) group which treated with arachis as vehicle, trained vehicle (EX+Arach) and trained nandrolone (EX+Nan) groups that were treated for 8 weeks...
March 2017: Autonomic & Autacoid Pharmacology
https://www.readbyqxmd.com/read/28539268/mir-221-mediates-the-epithelial-mesenchymal-transition-of-hepatocellular-carcinoma-by-targeting-adipor1
#20
Tong Li, Min Li, Shaobo Hu, Xiang Cheng, Yang Gao, Shuai Jiang, Qihong Yu, Chen Zhang, Ping Sun, Wenjing Xian, Zifang Song, Yong Zhang, Qichang Zheng
Recent studies have shown that miRNAs play vital roles in tumorigenesis. However, their effects on the epithelial-mesenchymal transition (EMT) in hepatocellular carcinoma (HCC) need to be better understood. Our present study demonstrates that miR-221, which is overexpressed in HCC tissues, promotes EMT in HCC cell lines by targeting a new gene, AdipoR1. First, overexpression of miR-221 was identified in 40 pairs of human HCC tumor and matched normal tissues. Moreover, we found that elevated miR-221 was strongly associated with worse clinicopathologic features in HCC patients...
October 2017: International Journal of Biological Macromolecules
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