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Adiponectin AND AMPK

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https://www.readbyqxmd.com/read/28219936/cardioprotection-of-ischemic-preconditioning-in-rats-involves-upregulating-adiponectin
#1
Hui Wang, Wenjing Wu, Jun Duan, Ming Ma, Wei Kong, Yuannan Ke, Gang Li, Jingang Zheng
It has been reported that ischemic preconditioning (IPC) and adiponectin (APN) are cardioprotective in many cardiovascular disorders. However, whether APN mediates the effect of IPC on myocardial injury has not been elucidated. This study was conducted to investigate whether IPC affects myocardial ischemic injury by increasing APN expression. Male adult rats with cardiac knockdowns of APN and its receptors via intramyocardial small-interfering RNA injection were subjected to IPC and then myocardial infarction (MI) at 24 h post-IPC...
February 20, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28188344/skeletal-muscle-secretome-in-duchenne-muscular-dystrophy-a-pivotal-anti-inflammatory-role-of-adiponectin
#2
S Lecompte, M Abou-Samra, R Boursereau, L Noel, S M Brichard
BACKGROUND: Persistent inflammation exacerbates the progression of Duchenne muscular dystrophy (DMD). The hormone, adiponectin (ApN), which is decreased in the metabolic syndrome, exhibits anti-inflammatory properties on skeletal muscle and alleviates the dystrophic phenotype of mdx mice. Here, we investigate whether ApN retains its anti-inflammatory action in myotubes obtained from DMD patients. We unravel the underlying mechanisms by studying the secretome and the early events of ApN...
February 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28188173/maresin-1-improves-insulin-sensitivity-and-attenuates-adipose-tissue-inflammation-in-ob-ob-and-diet-induced-obese-mice
#3
Leyre Martínez-Fernández, Pedro González-Muniesa, Laura M Laiglesia, Neira Sáinz, Pedro L Prieto-Hontoria, Xavier Escoté, Leticia Odriozola, Fernando J Corrales, Jose M Arbones-Mainar, José A Martínez, María J Moreno-Aliaga
The beneficial actions of n-3 fatty acids on obesity-induced insulin resistance and inflammation have been related to the synthesis of specialized proresolving lipid mediators (SPMs) like resolvins. The aim of this study was to evaluate the ability of one of these SPMs, maresin 1 (MaR1), to reverse adipose tissue inflammation and/or insulin resistance in two models of obesity: diet-induced obese (DIO) mice and genetic (ob/ob) obese mice. In DIO mice, MaR1 (2 μg/kg; 10 d) reduced F4/80-positive cells and expression of the proinflammatory M1 macrophage phenotype marker Cd11c in white adipose tissue (WAT)...
February 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28178338/the-impact-of-obesity-and-adiponectin-signaling-in-patients-with-renal-cell-carcinoma-a-potential-mechanism-for-the-obesity-paradox
#4
Ryuichi Ito, Shintaro Narita, Mingguo Huang, Taketoshi Nara, Kazuyuki Numakura, Koichiro Takayama, Hiroshi Tsuruta, Atsushi Maeno, Mitsuru Saito, Takamitsu Inoue, Norihiko Tsuchiya, Shigeru Satoh, Tomonori Habuchi
Although obesity increases the risk of renal cell carcinoma (RCC), obese patients with RCC experience longer survival than non-obese patients. However, the mechanism of this "obesity paradox" is unknown. We examined the impact of preoperative BMI, serum total adiponectin (sAd) level, total adiponectin secretion from perinephric adipose tissue, and intratumoral expression of adiponectin receptors on RCC aggressiveness and survival. We also investigated the mechanism underlying enhanced cancer aggressiveness in RCC cells stimulated with exogenous adiponectin...
2017: PloS One
https://www.readbyqxmd.com/read/28176455/adiponectin-promotes-human-jaw-bone-marrow-mesenchymal-stem-cell-chemotaxis-via-cxcl1-and-cxcl8
#5
Yinfei Pu, Mengke Wang, Yingying Hong, Yuwei Wu, Zhihui Tang
Adiponectin (APN) is known to promote the osteogenic differentiation of human jaw bone marrow mesenchymal stem cells (h-JBMMSCs). However, the underlying mechanism has not been fully elucidated. Previously, we showed that APN could promote h-JBMMSC osteogenesis via APPL1-p38 by up-regulating osteogenesis-related genes. Here, we aimed to determine whether APN could promote h-JBMMSC chemotaxis through CXCL1/CXCL8. The CCK-8, wound healing and transwell assays were used to evaluate the proliferation, migration and chemotaxis of h-JBMMSCs with or without APN treatment...
February 8, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28145500/muscle-specific-overexpression-of-adipor1-or-adipor2-gives-rise-to-common-and-discrete-local-effects-whilst-adipor2-promotes-additional-systemic-effects
#6
Sahar Keshvari, Darren C Henstridge, Choaping Ng, Mark A Febbraio, Jonathan P Whitehead
Hypoadiponectinemia and adiponectin resistance are implicated in the aetiology of obesity-related cardiometabolic disorders, hence represent a potential therapeutic axis. Here we characterised the effects of in vivo electrotransfer-mediated overexpression of the adiponectin receptors, AdipoR1 or AdipoR2, into tibialis anterior muscle (TAM) of lean or obese mice. In lean mice, TAM-specific overexpression of AdipoR1 ((TAM)R1) or AdipoR2 ((TAM)R2) increased phosphorylation of AMPK, AKT and ERK and expression of the insulin responsive glucose transporter glut4...
February 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28108519/survival-of-acute-monocytic-leukemia-cells-is-driven-by-fatty-acid-oxidation-mediated-activation-of-ampk-in-bone-marrow-adipocytes
#7
Yoko Tabe, Shinichi Yamamoto, Kaori Saitoh, Kazumasa Sekihara, Norikazu Monma, Kazuho Ikeo, Kaoru Mogushi, Masato Shikami, Vivian R Ruvolo, Jo Ishizawa, Numsen Hail, Saiko Kazuno, Mamoru Igarashi, Hiromichi Matsushita, Yasunari Yamanaka, Hajime Arai, Isao Nagaoka, Takashi Miida, Yoshihide Hayashizaki, Marina Konopleva, Michael Andreeff
Leukemia cells in the bone marrow (BM) must meet the biochemical demands of increased cell proliferation by continually adapting to fluctuations in nutrient and oxygen availability. Thus, targeting metabolic abnormalities in leukemia cells located in the BM may provide an effective therapeutic strategy. In this study, we report the discovery of a metabolic role for BM adipocytes in supporting the growth of leukemic blasts. Preventing nutrient starvation-induced apoptosis of leukemic cells by BM adipocytes, as well as the metabolic and molecular mechanisms involved in this process, were investigated using various analytical techniques...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28072841/a-small-insulinomimetic-molecule-also-improves-insulin-sensitivity-in-diabetic-mice
#8
Sandip Mukherjee, Mrittika Chattopadhyay, Sushmita Bhattacharya, Suman Dasgupta, Sahid Hussain, Saitanya K Bharadwaj, Dhrubajyoti Talukdar, Abul Usmani, Bhola S Pradhan, Subeer S Majumdar, Pronobesh Chattopadhyay, Satinath Mukhopadhyay, Tushar K Maity, Mihir K Chaudhuri, Samir Bhattacharya
Dramatic increase of diabetes over the globe is in tandem with the increase in insulin requirement. This is because destruction and dysfunction of pancreatic β-cells are of common occurrence in both Type1 diabetes and Type2 diabetes, and insulin injection becomes a compulsion. Because of several problems associated with insulin injection, orally active insulin mimetic compounds would be ideal substitute. Here we report a small molecule, a peroxyvanadate compound i.e. DmpzH[VO(O2)2(dmpz)], henceforth referred as dmp, which specifically binds to insulin receptor with considerable affinity (KD-1...
2017: PloS One
https://www.readbyqxmd.com/read/27942464/short-term-caloric-restriction-in-db-db-mice-improves-myocardial-function-and-increases-high-molecular-weight-hmw-adiponectin
#9
X Julia Xu, Erma Babo, Fuzhong Qin, Dominique Croteau, Wilson S Colucci
BACKGROUND: Obesity and metabolic syndrome lead to the development of metabolic heart disease (MHD) that is characterized by left ventricular hypertrophy (LVH), diastolic dysfunction, and increased mitochondrial ROS. Caloric restriction (CR) is a nutritional intervention that protects against obesity, diabetes, and cardiovascular disease. Healthy adipose tissue is cardioprotective via releasing adipokines such as adiponectin. We tested the hypothesis that CR can ameliorate MHD and it is associated with improved adipose tissue function as reflected by increased circulating levels of high molecular weight (HMW) adiponectin and AMP-activated protein kinase (AMPK) in db/db mice...
December 2016: IJC Metabolic & Endocrine
https://www.readbyqxmd.com/read/27897419/exercise-restores-muscle-stem-cell-mobilization-regenerative-capacity-and-muscle-metabolic-alterations-via-adiponectin-adipor1-activation-in-samp10-mice
#10
Aiko Inoue, Xian Wu Cheng, Zhe Huang, Lina Hu, Ryosuke Kikuchi, Haiying Jiang, Limei Piao, Takeshi Sasaki, Kohji Itakura, Hongxian Wu, Guangxian Zhao, Yanna Lei, Guang Yang, Enbo Zhu, Xiang Li, Kohji Sato, Teruhiko Koike, Masafumi Kuzuya
BACKGROUND: Exercise train (ET) stimulates muscle response in pathological conditions, including aging. The molecular mechanisms by which exercise improves impaired adiponectin/adiponectin receptor 1 (AdipoR1)-related muscle actions associated with aging are poorly understood. Here we observed that in a senescence-accelerated mouse prone 10 (SAMP10) model, long-term ET modulated muscle-regenerative actions. METHODS: 25-week-old male SAMP10 mice were randomly assigned to the control and the ET (45 min/time, 3/week) groups for 4 months...
November 29, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27896586/effect-of-berberine-on-the-ratio-of-high-molecular-weight-adiponectin-to-total-adiponectin-and-adiponectin-receptors-expressions-in-high-fat-diet-fed-rats
#11
Yue-Yue Wu, Ying Zha, Jun Liu, Fang Wang, Jiong Xu, Zao-Ping Chen, He-Yuan Ding, Li Sheng, Xiao-Jie Han
OBJECTIVE: To assess the effects of berberine (BBR) on high-molecular weight (HMW) adiponectin and adiponectin receptors (adipoR1/adipoR2) expressions in high-fat (HF) diet fed rats. METHODS: Forty Wistar male rats were randomly assigned into a normal diet fed group and three HF diet (fat for 45% calories) fed groups (n=10 for each group). All rats underwent 12 weeks of feeding. After 4 weeks feeding, rats in the two of three HF diet fed groups were treated with 150 mg·kg(-1)·day(-1) BBR (HF+LBBR group) and 380 mg·kg(-1)·day(-1) BBR (HF+HBBR group) by gavage once a day respectively for the next 8 weeks while the rats in other groups treated with vehicle (NF+Veh and HF+Veh)...
November 17, 2016: Chinese Journal of Integrative Medicine
https://www.readbyqxmd.com/read/27889747/alisol-a-24-acetate-prevents-hepatic-steatosis-and-metabolic-disorders-in-hepg2-cells
#12
Lu Zeng, WaiJiao Tang, JinJin Yin, LiJuan Feng, Yabing Li, Xiaorui Yao, BenJie Zhou
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is closely associated with metabolic disorders including hepatic lipid accumulation and inflammation. Alisol A 24-acetate, a triterpene from Alismatis rhizome, has multiple biologic activities such as hypolipidemic, anti-inflammatory and anti-diabetic. Thus we hypothesized that Alisol A 24 -acetate would have effect on NAFLD. The present study was conducted to investigate the therapeutic effects and potential mechanisms of Alisol A 24-acetate against hepatic steatosis in a free fatty acids (FFAs) induced NAFLD cell model...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27884163/chronic-adiponectin-deficiency-leads-to-alzheimer-s-disease-like-cognitive-impairments-and-pathologies-through-ampk-inactivation-and-cerebral-insulin-resistance-in-aged-mice
#13
Roy Chun-Laam Ng, On-Yin Cheng, Min Jian, Jason Shing-Cheong Kwan, Philip Wing-Lok Ho, Kenneth King-Yip Cheng, Patrick Ka Kit Yeung, Lena Lei Zhou, Ruby Lai-Chong Hoo, Sookja Kim Chung, Aimin Xu, Karen Siu-Ling Lam, Koon Ho Chan
BACKGROUND: Insulin resistance is the major pathogenesis underlying type 2 diabetes mellitus (T2DM) and these patients have doubled risk of Alzheimer's disease (AD). Increasing evidence suggests that insulin resistance plays an important role in AD pathogenesis, possibly due to abnormal GSK3β activation, causing intra- and extracellular amyloid-beta (Aβ) accumulation. Adiponectin (APN) is an adipokine with insulin-sensitizing and anti-inflammatory effects. Reduced circulatory APN level is associated with insulin resistance and T2DM...
November 25, 2016: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/27882945/adiponectin-reduces-er-stress-induced-apoptosis-through-ppar%C3%AE-transcriptional-regulation-of-atf2-in-mouse-adipose
#14
Zhenjiang Liu, Lu Gan, Tianjiao Wu, Fei Feng, Dan Luo, Huihui Gu, Shimin Liu, Chao Sun
Adiponectin is a cytokine produced predominantly by adipose tissue and correlates with glucose and lipid homeostasis. However, the effects of adiponectin on endoplasmic reticulum (ER) stress and apoptosis of adipose tissue remain elusive. In this study, we found that tunicamycin-induced ER stress increased serum free fatty acid (FFA) and impaired glucose tolerance, elevated the mRNA levels of GRP78, Chop, ATF2 and caspase 3, but reduced adiponectin mRNA level in white adipose tissue. Moreover, ER stress-triggered adipocyte apoptosis by increasing cellular FFA level and Ca(2+) level...
November 24, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27847435/evaluation-of-fish-oil-rich-in-mufas-for-anti-diabetic-and-anti-inflammation-potential-in-experimental-type-2-diabetic-rats
#15
Waranya Keapai, Sopida Apichai, Doungporn Amornlerdpison, Narissara Lailerd
The advantages of monounsaturated fatty acids (MUFAs) on insulin resistance and type 2 diabetes mellitus (T2DM) have been well established. However, the molecular mechanisms of the anti-diabetic action of MUFAs remain unclear. This study examined the anti-hyperglycemic effect and explored the molecular mechanisms involved in the actions of fish oil- rich in MUFAs that had been acquired from hybrid catfish (Pangasius larnaudii×Pangasianodon hypophthalmus) among experimental type 2 diabetic rats. Diabetic rats that were fed with fish oil (500 and 1,000 mg/kg BW) for 12 weeks significantly reduced the fasting plasma glucose levels without increasing the plasma insulin levels...
November 2016: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/27814392/gender-specific-mechanisms-underlying-the-amelioration-of-high-fat-diet-induced-glucose-intolerance-in-b-cell-activating-factor-deficient-mice
#16
Bobae Kim, Chang-Kee Hyun
It has recently been found that B cell activating factor (BAFF) plays an important role in the regulation of energy homeostasis. We also have previously reported that BAFF deficiency reverses high-fat (HF) diet-induced glucose intolerance by potentiating adipose tissue function. In the present study, we found that BAFF deficient (BAFF-/-) mice exhibit gender-specific differences in protection against diet-induced glucose intolerance, and aimed to characterize the gender-dependent molecular alterations in energy metabolism...
2016: PloS One
https://www.readbyqxmd.com/read/27807406/c1q-tumor-necrosis-factor-related-protein-3-attenuates-brain-injury-after-intracerebral-hemorrhage-via-ampk-dependent-pathway-in-rat
#17
Shaohua Wang, Yang Zhou, Bo Yang, Lingyu Li, Shanshan Yu, Yanlin Chen, Jin Zhu, Yong Zhao
C1q/tumor necrosis factor (TNF)-related protein-3 (CTRP3) is a recently discovered adiponectin paralog with established metabolic regulatory properties. However, the role of CTRP3 in intracerebral hemorrhage (ICH) is still mostly unresolved. The aim of the present report was to explore the possible neuroprotective effect of CTRP3 in an ICH rat model and to elucidate the fundamental mechanisms. ICH was induced in rats by intracerebral infusion of autologous arterial blood. The effects of exogenous CTRP3 (recombinant or lentivirus CTRP3) on brain injury were explored on day 7...
2016: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/27757734/adiponectin-exerts-cardioprotection-against-ischemia-reperfusion-injury-partially-via-calreticulin-mediated-anti-apoptotic-and-anti-oxidative-actions
#18
Yang Sun, Dajun Zhao, Yang Yang, Chao Gao, Xing Zhang, Zhiqiang Ma, Shuai Jiang, Lin Zhao, Wenhao Chen, Kai Ren, Wei Yi, Feng Gao
The underlying mechanisms of cardioprotection of adiponectin (APN) against ischemia/reperfusion (I/R) injury remain largely unknown. The present study aimed to investigate whether calreticulin (CRT) mediated APN's cardioprotection against I/R injury. We inhibited mice cardiac CRT expression via intra-myocardial injection of CRT SiRNA, performed transient LAD ligation, measured the cardiac function, apoptosis and oxidative stress to identify CRT's effects on cardioprotective actions of APN against I/R injury in vivo...
October 18, 2016: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/27754026/yia-03-02-adiponectin-mediated-epithelial-autophagy-attenuates-hypertensive-renal-fibrosis
#19
Cheng-Chao Ruan, Yan Li, Yu Ma, Ding-Liang Zhu, Ping-Jin Gao
OBJECTIVE: Previous studies have indicated that adiponectin (APN) protects against hypertension-related cardiovascular disease. However, whether APN is involved in the regulation of hypertensive renal damage remains unclear. The present study aimed to elucidate how APN regulates renal epithelial to mesenchymal transdifferentiation (EMT) in desoxycorticosterone (DOCA)-salt hypertensive mice. DESIGN AND METHOD: Male APN knockout (APNKO) mice and wild-type (WT) C57BL/6 littermates were sc infused with DOCA pellet (50 mg for 21 day release)...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27740628/hedgehog-signaling-in-bone-regulates-whole-body-energy-metabolism-through-a-bone-adipose-endocrine-relay-mediated-by-pthrp-and-adiponectin
#20
Xu Zhang, Qianni Cheng, Yixiang Wang, Po Sing Leung, Kinglun Kingston Mak
Bone plays a role in energy metabolism, but the interplay between bone and other organs in this process is not completely understood. Here, we show that upregulated Hh signaling in bones results in increased whole-body energy expenditure, white adipose tissue (WAT) browning, hypoglycemia and skeletal muscle atrophy. We found that Hh signaling induces PTHrP secretion from bones and causes WAT browning. Injection of PTHrP-neutralizing antibody attenuates WAT browning and improves the circulating blood glucose level while high-fat diet treatment only rescues hypoglycemia...
February 2017: Cell Death and Differentiation
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