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Adiponectin AND AMPK

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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
#1
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
#2
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
#3
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...
November 25, 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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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...
October 14, 2016: Cell Death and Differentiation
https://www.readbyqxmd.com/read/27720679/fetuin-a-downregulates-adiponectin-through-wnt-ppar%C3%AE-pathway-in-lipid-induced-inflamed-adipocyte
#12
Soumik Agarwal, Mrittika Chattopadhyay, Sandip Mukherjee, Suman Dasgupta, Satinath Mukhopadhyay, Samir Bhattacharya
Adiponectin secreted from adipocytes is an anti-diabetic and anti-atherogenic adipokine. Adiponectin level is known to fall significantly in obesity induced type 2 diabetes which worsen insulin sensitivity because of aberrant lipid management. However, underlying mechanism of adiponectin decrease in obese diabetic condition is yet unclear. We report here that lowering of plasma adiponectin coincided with the higher Fetuin A (FetA) level in high fat diet (HFD) induced obese diabetic mice. Knock down of FetA gene (FetA(KD)) elevated adiponectin level markedly in HFD mice, while reinforcement of FetA into FetA(KD)HFD mice reduced its level again...
October 6, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27703271/pioglitazone-ameliorates-smooth-muscle-cell-proliferation-in-cuff-induced-neointimal-formation-by-both-adiponectin-dependent-and-independent-pathways
#13
Tetsuya Kubota, Naoto Kubota, Hiroyuki Sato, Mariko Inoue, Hiroki Kumagai, Tomokatsu Iwamura, Iseki Takamoto, Tsuneo Kobayashi, Masao Moroi, Yasuo Terauchi, Kazuyuki Tobe, Kohjiro Ueki, Takashi Kadowaki
The aim of this study is to elucidate to what degree adiponectin is involved in TZD-mediated amelioration of neointimal formation. We investigated the effect of 3- or 8-weeks' pioglitazone on cuff-induced neointimal formation in adiponectin-deficient (APN-KO) and wild-type (WT) mice. Pioglitazone for 3 weeks reduced neointimal formation in the WT mice with upregulation of the plasma adiponectin levels, but failed to reduce neointimal formation in the APN-KO mice, suggesting that pioglitazone suppressed neointimal formation by adiponectin-dependent mechanisms...
October 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27689001/adiponectin-potentiates-the-acute-effects-of-leptin-in-arcuate-pomc-neurons
#14
Jia Sun, Yong Gao, Ting Yao, Yiru Huang, Zhenyan He, Xingxing Kong, Kai-Jiang Yu, Rui-Tao Wang, Hongbo Guo, Jianqun Yan, Yongsheng Chang, Hong Chen, Philipp E Scherer, Tiemin Liu, Kevin W Williams
OBJECTIVE: Adiponectin receptors (AdipoRs) are located on neurons of the hypothalamus involved in metabolic regulation - including arcuate proopiomelanocortin (Pomc) and Neuropeptide Y/Agouti-related peptide (NPY/AgRP) neurons. AdipoRs play a critical role in regulating glucose and fatty acid metabolism by initiating several signaling cascades overlapping with Leptin receptors (LepRs). However, the mechanism by which adiponectin regulates cellular activity in the brain remains undefined...
October 2016: Molecular Metabolism
https://www.readbyqxmd.com/read/27678528/fgf21-activates-ampk-signaling-impact-on-metabolic-regulation-and-the-aging-process
#15
Antero Salminen, Anu Kauppinen, Kai Kaarniranta
Fibroblast growth factor 21 (FGF21) has a significant role in the regulation of energy metabolism, e.g., in the control of systemic glucose and lipid metabolism. For instance, FGF21 enhances insulin sensitivity, increases glucose uptake, and thus can decrease serum hyperglycemia, while it also increases lipid oxidation and inhibits lipogenesis. AMP-activated protein kinase (AMPK) is a tissue energy sensor involved in maintaining the energy balance and tissue integrity. It is known that AMPK signaling generates an energy metabolic profile which displays a remarkable overlap with that of FGF21...
September 27, 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
https://www.readbyqxmd.com/read/27678302/adiponectin-protects-the-rats-liver-against-chronic-intermittent-hypoxia-induced-injury-through-amp-activated-protein-kinase-pathway
#16
Wenxiao Ding, Qiang Zhang, Yanbin Dong, Ning Ding, Hanpeng Huang, Xianji Zhu, Sean Hutchinson, Xingya Gao, Xilong Zhang
This study was performed to assess the effect of chronic intermittent hypoxia (CIH) on the liver, the associated mechanisms and the potential therapeutic roles of adiponectin (Ad). Sixty rats were randomly assigned to four groups: the normal control (NC), NC and Ad supplement (NC + Ad), CIH, and CIH and Ad supplement (CIH + Ad) groups. The rats in the CIH and CIH + Ad groups were exposed to a hypoxic environment for 4 months. Rats in the NC + Ad and CIH + Ad groups were also treated with an intravenous injection of Ad (10 ug), twice a week...
September 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27668984/deletion-of-ampk%C3%AE-1-attenuates-the-anticontractile-effect-of-perivascular-adipose-tissue-pvat-and-reduces-adiponectin-release
#17
Tarek A M Almabrouk, Azizah B Ugusman, Omar J Katwan, Ian P Salt, Simon Kennedy
BACKGROUND: Perivascular adipose tissue (PVAT) surrounds most blood vessels and secretes numerous active substances, including adiponectin which produce a net anticontractile effect in healthy PVAT. AMP-activated protein kinase (AMPK) is a key mediator of cellular energy balance and may mediate the vascular effects of adiponectin. In this study we investigated the role of AMPK within PVAT in mediating the anticontractile effect of PVAT. METHODS: Endothelium-denuded aortic rings from wild-type (Sv129) and α1 AMPK knockout (KO) mice were mounted on a wire myograph...
September 26, 2016: British Journal of Pharmacology
https://www.readbyqxmd.com/read/27667474/wogonin-enhances-intracellular-adiponectin-levels-and-suppresses-adiponectin-secretion-in-3t3-l1-adipocytes
#18
Tan Yang, Hua Liu, Bo Zhao, Zhongyuan Xia, Yemin Zhang, Deling Zhang, Mingxin Li, Yingkang Cao, Zhijiang Zhang, Yongyi Bi, Changhua Wang
As an insulin sensitizer and modulator of inflammatory responses, adiponectin has become a therapeutic target for insulin resistance, diabetes, and diabetes-related complications. Wogonin possesses anti-oxidative, anti-inflammatory, and anti-diabetic abilities. However, its effect on generation and secretion of adiponectin is ill-defined in adipocytes. Here, we demonstrated that wogonin administration augmented intracellular adiponectin levels and attenuated adiponectin release in a dose- and time-dependent manner in mature 3T3-L1 adipocytes, along with a suppression of PKCδ phosphorylation...
September 21, 2016: Endocrine Journal
https://www.readbyqxmd.com/read/27645900/small-molecule-adiponectin-receptor-agonist-gtdf-protects-against-skeletal-muscle-atrophy
#19
Abhishek Kumar Singh, Sonal Shree, Sourav Chattopadhyay, Sudhir Kumar, Anagha Gurjar, Sapana Kushwaha, Harish Kumar, Arun Kumar Trivedi, Naibedya Chattopadhyay, Rakesh Maurya, Ravishankar Ramachandran, Sabyasachi Sanyal
Skeletal muscle atrophy is a debilitating response to several major diseases, muscle disuse and chronic steroid treatment for which currently no therapy is available. Since adiponectin signaling plays key roles in muscle energetics, we assessed if globular adiponectin (gAd) or the small molecule adiponectin mimetic 6-C-β-D-glucopyranosyl-(2S,3S)-(+)-5,7,3',4'-tetrahydroxydihydroflavonol (GTDF) could ameliorate muscle atrophy. Both GTDF and gAd induced C2C12 myoblast differentiation. GTDF and gAd effectively prevented reduction in myotube area and suppressed the expressions of atrophy markers; atrogin-1 and muscle ring finger protein-1 (MuRF1) in models of steroid, cytokine and starvation -induced muscle atrophy...
September 16, 2016: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/27642944/yia-03-02-adiponectin-mediated-epithelial-autophagy-attenuates-hypertensive-renal-fibrosis
#20
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
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