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Adiponectin AND AMPK

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https://www.readbyqxmd.com/read/29237572/the-role-of-adipor1-and-adipor2-in-liver-fibrosis
#1
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
https://www.readbyqxmd.com/read/29222051/long-term-fermented-soybean-paste-improves-metabolic-parameters-associated-with-non-alcoholic-fatty-liver-disease-and-insulin-resistance-in-high-fat-diet-induced-obese-mice
#2
Min-Seok Kim, Bobae Kim, Haryung Park, Yosep Ji, Wilhelm Holzapfel, Do-Young Kim, Chang-Kee Hyun
Recently, Korean traditional fermented soybean paste, called Doenjang, has attracted attention for its protective effect against diet-related chronic diseases such as obesity and type 2 diabetes. Long-term fermented soybean pastes (LFSPs) are made by fermentation with naturally-occurring microorganisms for several months, whereas short-term fermented soybean pastes (SFSPs) are produced by shorter-time fermentation inoculated with a starter culture. Here, we demonstrate that administration of LFSP, but not SFSP, protects high-fat diet (HFD)-fed obese mice against non-alcohol fatty liver disease (NAFLD) and insulin resistance...
December 5, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29202114/dihydrosanguinarine-enhances-glucose-uptake-in-mouse-3t3-l1-cells
#3
Yit-Lai Chow, Yuko Iwata, Fumihiko Sato
Recently, more studies have aimed at identifying selective peroxisome proliferator-activated receptor gamma (PPARγ) modulators that transactivate the expression of PPARγ-dependent genes as partial agonists to improve diabetic symptoms with fewer side effects compared to classic PPARγ agonists such as thiazolidinediones. We found that dihydrosanguinarine (DHS) treatment induced preadipocyte differentiation and lipid droplet accumulation in 3T3-L1 cells, but this effect is weaker than that elicited by the full PPARγ agonist troglitazone...
October 31, 2017: ACS Omega
https://www.readbyqxmd.com/read/29198236/acetate-alters-the-process-of-lipid-metabolism-in-rabbits
#4
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
https://www.readbyqxmd.com/read/29174968/caloric-restriction-can-improve-learning-and-memory-in-c57-bl-mice-probably-via-regulation-of-the-ampk-signaling-pathway
#5
Lina Ma, Rong Wang, Wen Dong, Zhiwei Zhao
Caloric restriction (CR) is effective in slowing aging and delaying aging-related diseases in many species, but the mechanism is complex and not fully elucidated. This study aimed to evaluate the beneficial effects of a caloric restriction diet on learning and memory, and further to elucidate the mechanisms. Thirty 6-week-old male C57/BL mice were randomly divided into three groups: normal control (NC group), high-energy (HE group) and CR group. After 44weeks, the Morris water maze was used to examine learning and memory abilities...
November 23, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/29115380/combination-treatment-of-adipose-derived-stem-cells-and-adiponectin-attenuates-pulmonary-arterial-hypertension-in-rats-by-inhibiting-pulmonary-arterial-smooth-muscle-cell-proliferation-and-regulating-the-ampk-bmp-smad-pathway
#6
Li Luo, Wuhong Zheng, Guili Lian, Huaning Chen, Ling Li, Changsheng Xu, Liangdi Xie
The present study aimed to assess the effects of therapy with adiponectin (APN) gene-modified adipose-derived stem cells (ADSCs) on pulmonary arterial hypertension (PAH) in rats and the underlying cellular and molecular mechanisms. ADSCs were successfully isolated from the rats and characterized. ADSCs were effectively infected with the green fluorescent protein (GFP)-empty (ADSCs-V) or the APN-GFP (ADSCs-APN) lentivirus and the APN expression was evaluated by ELISA. Sprague-Dawley rats were administered monocrotaline (MCT) to develop PAH...
October 31, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29105398/oral-quercetin-supplementation-enhances-adiponectin-receptor-transcript-expression-in-polycystic-ovary-syndrome-patients-a-randomized-placebo-controlled-double-blind-clinical-trial
#7
Neda Rezvan, Ashraf Moini, Sattar Gorgani-Firuzjaee, Mohammad Javad Hosseinzadeh-Attar
OBJECTIVES: Polycystic ovary syndrome (PCOS), an ovarian-pituitary axis androgen disorder, is a common endocrine disease in women. Obesity-induced androgenesis and imbalance of adipokine secretion may lead to some metabolic features of PCOS. The beneficial effects of polyphenolic compounds such as quercetin have been reported, however, the underlying molecular mechanism is not entirely understood. In the present study, we investigated the effect of quercetin supplementation on the expression of adiponectin receptors at the transcript level in peripheral blood mononuclear cells (PBMC) samples of PCOS patients...
January 2018: Cell Journal
https://www.readbyqxmd.com/read/29099085/eburicoic-acid-a-triterpenoid-compound-from-antrodia-camphorata-displays-antidiabetic-and-antihyperlipidemic-effects-in-palmitate-treated-c2c12-myotubes-and-in-high-fat-diet-fed-mice
#8
Cheng-Hsiu Lin, Yueh-Hsiung Kuo, Chun-Ching Shih
This study was designed to investigate the antidiabetic and antihyperlipidemic effects and mechanisms of eburicoic acid (TRR); one component of Antrodia camphorata in vitro and in an animal model for 14 weeks. Expression levels of membrane glucose transporter type 4 (GLUT4); phospho-5'-adenosine monophosphate-activated protein kinase (AMPK)/total AMPK; and phospho-Akt/total-Akt in insulin-resistant C2C12 myotube cells were significantly decreased by palmitate; and such decrease was prevented and restored by TRR at different concentrations...
November 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29091708/himh0021-attenuates-ethanol-induced-liver-injury-and-steatosis-in-mice
#9
Yongjun Lee, Dong-Joo Kwon, Young Han Kim, Moonjin Ra, Seong Il Heo, Won Gyeong Ahn, Jeong-Ran Park, Seoung Rak Lee, Ki Hyun Kim, Sun Young Kim
Chronic alcohol consumption causes alcohol-induced lipogenesis and promotes hepatic injury by preventing the oxidation of hepatocellular fatty acids through the suppression of the activation of AMP-activated protein kinase (AMPK). HIMH0021, an active flavonoid compound, which is a component of the Acer tegmentosum extract, has been shown to protect against liver damage caused by alcohol consumption. Therefore, in this study, we aimed to determine whether HIMH0021 could regulate alcoholic fatty liver and liver injury in mice...
2017: PloS One
https://www.readbyqxmd.com/read/29058611/adiponectin-is-required-for-maintaining-normal-body-temperature-in-a-cold-environment
#10
Qiong Wei, Jong Han Lee, Hongying Wang, Odelia Y N Bongmba, Chia-Shan Wu, Geetali Pradhan, Zilin Sun, Lindsey Chew, Mandeep Bajaj, Lawrence Chan, Robert S Chapkin, Miao-Hsueh Chen, Yuxiang Sun
BACKGROUND: Thermogenic impairment promotes obesity and insulin resistance. Adiponectin is an important regulator of energy homeostasis. While many beneficial metabolic effects of adiponectin resemble that of activated thermogenesis, the role of adiponectin in thermogenesis is not clear. In this study, we investigated the role of adiponectin in thermogenesis using adiponectin-null mice (Adipoq -/-). METHODS: Body composition was measured using EchoMRI. Metabolic parameters were determined by indirect calorimetry...
October 23, 2017: BMC Physiology
https://www.readbyqxmd.com/read/29030114/impairment-of-energy-sensors-sirt1-and-ampk-in-lipid-induced-inflamed-adipocyte-is-regulated-by-fetuin-a
#11
Mrittika Chattopadhyay, Sandip Mukherjee, Subhendu K Chatterjee, Dipanjan Chattopadhyay, Snehasis Das, Subeer S Majumdar, Satinath Mukhopadhyay, Sutapa Mukherjee, Samir Bhattarcharya
Although several reports demonstrated that accumulation of excess lipid in adipose tissue produces defects in adipocyte which leads to the disruption of energy homeostasis causing severe metabolic problems, underlying mechanism of this event remains yet unclear. Here we demonstrate that FetuinA (FetA) plays a critical role in the impairment of two metabolic sensors, SIRT1 and AMPK, in inflamed adipocytes of high fat diet (HFD) mice. A linear increase in adipocyte hypertrophy from 10 to 16 week was in tandem with the increase in FetA and that coincided with SIRT1 cleavage and decrease in pAMPK which adversely affects PGC1α activation...
October 10, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/29018142/adiponectin-has-a-pivotal-role-in-the-cardioprotective-effect-of-cp-3-iv-a-selective-cd36-azapeptide-ligand-after-transient-coronary-artery-occlusion-in-mice
#12
David N Huynh, Valérie L Bessi, Liliane Ménard, Jérôme Piquereau, Caroline Proulx, Maria Febbraio, William D Lubell, André C Carpentier, Yan Burelle, Huy Ong, Sylvie Marleau
CD36 is a multiligand receptor involved in lipid metabolism. We investigated the mechanisms underlying the cardioprotective effect of CP-3(iv), an azapeptide belonging to a new class of selective CD36 ligands. The role of CP-3(iv) in mediating cardioprotection was investigated because CD36 signaling leads to activation of peroxisome proliferator-activated receptor-γ, a transcriptional regulator of adiponectin. CP-3(iv) pretreatment reduced infarct size by 54% and preserved hemodynamics in C57BL/6 mice subjected to 30 min coronary ligation and reperfusion but had no effect in CD36-deficient mice...
October 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28974704/maternal-intake-of-grape-seed-procyanidins-during-lactation-induces-insulin-resistance-and-an-adiponectin-resistance-like-phenotype-in-rat-offspring
#13
Antoni Caimari, Roger Mariné-Casadó, Noemí Boqué, Anna Crescenti, Lluís Arola, Josep Maria Del Bas
Previously, we demonstrated that a grape seed procyanidin extract (GSPE) supplementation in pregnant and lactating rats exerted both healthy and deleterious programming effects on their offspring. Here, we evaluated whether the administration of GSPE during lactation (100 mg.kg(-1).day(-1)) in rats elicited beneficial effects in their normoweight (STD-GSPE group) and cafeteria-fed obese (CAF-GSPE group) adult male offspring. STD-GSPE and CAF-GSPE offspring showed increased energy expenditure and circulating total and high-molecular-weight adiponectin...
October 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28966224/interaction-between-bone-and-glucose-metabolism-review
#14
Ippei Kanazawa
Accumulating evidence has shown that bone and glucose metabolism are closely associated with each other. Since the risk of osteoporotic fractures is increased in patients with diabetes mellitus (DM), osteoporosis is recently recognized as one of diabetic complications, called DM-induced bone fragility. Previous studies showed that collagen cross-links of advanced glycation end products (AGEs) and dysfunctions of osteoblast and osteocyte are involved in DM-induced bone fragility. Circulating levels of AGEs and homocysteine are increased in patients with DM, and they directly impair the functions of osteoblast and osteocyte, resulting in decreased bone formation and bone remodeling...
November 29, 2017: Endocrine Journal
https://www.readbyqxmd.com/read/28957801/globular-adiponectin-attenuated-h2o2-induced-apoptosis-in-rat-chondrocytes-by-inducing-autophagy-through-the-ampk-mtor-pathway
#15
Junzheng Hu, Weiding Cui, Wenxiao Ding, Yanqing Gu, Zhen Wang, Weimin Fan
BACKGROUND/AIMS: Chondrocyte apoptosis is closely related to the development and progression of osteoarthritis. Global adiponectin (gAPN), secreted from adipose tissue, possesses potent anti-inflammatory and antiapoptotic properties in various cell types. This study aimed to investigate the role of autophagy induced by gAPN in the suppression of H2O2-induced apoptosis and the potential mechanism of gAPN-induced autophagy in chondrocytes. METHODS: H2O2 was used to induce apoptotic injury in rat chondrocytes...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28952262/-piperine-regulates-glucose-metabolism-disorder-in-hepg2-cells-of-insulin-resistance-models-via-targeting-upstream-target-of-ampk-signaling-pathway
#16
Chun-Ping Wan, Ya-Gai Wei, Xiao-Xue Li, Li-Jun Zhang, Rui Yang, Zhao-Ri-Ge-Tu Bao
To investigate the effect of piperine on the disorder of glucose metabolism in the cell model with insulin resistance (IR) and explore the molecules mechanism on intervening the upstream target of AMPK signaling pathway. The insulin resistance models in HepG2 cells were established by fat emulsion stimulation. Then glucose consumption in culture supernatant was detected by GOD-POD method. Enzyme-linked immunosorbent assay(ELISA) was used to measure the levels of leptin(LEP) and adiponectin(APN) in culture supernatant; Real-time quantitative PCR was used to assess the mRNA expression of APN and LEP; and the protein expression levels of LepR, AdipoR1, AdipoR2 and the activation of AMPK signaling pathway were detected by Western blot analysis...
February 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28919424/adiponectin-modulates-the-function-of-endothelial-progenitor-cells-via-ampk-enos-signaling-pathway
#17
Shuhong Wang, Jie Miao, Meijie Qu, Guo-Yuan Yang, Linhui Shen
Endothelial progenitor cells have been shown to differentiate into endothelial cells and to play a pivotal role in vascular homeostasis. Adiponectin has anti-atherogenic and anti-inflammatory properties via directly acting on vascular cells. The aim of the present study is to explore the effect of adiponectin on major functions involved in survival, migration, and tube formation of endothelial progenitor cells and to explore the underlying mechanism. In this study, we transferred adiponectin gene into endothelial progenitor cells via lentiviral vectors and investigated the proliferation, migration and tube formation of these transfected cells...
November 4, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28901521/adiponectin-receptor-agonist-adiporon-suppresses-adipogenesis-in-c3h10t1-2-cells-through-the-adenosine-monophosphate%C3%A2-activated-protein-kinase-signaling-pathway
#18
Shu-Juan Wang, Wen-Yi Lu, Kai-Yan Liu
The aim of the present study was to investigate the effects of AdipoRon, an adiponectin receptor agonist, on adipogenesis in C3H10T1/2 cells and to explore the underlying mechanisms. C3H10T1/2 cells were treated with increasing doses of AdipoRon for 8 days, and Oil Red O staining was used to assess lipid accumulation. The protein and mRNA expression levels of adipogenic transcription factors and adipocyte‑specific genes were examined by western blotting and reverse transcription quantitative polymerase chain reaction, respectively...
November 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28840618/the-beneficial-effect-of-anthocyanidin-rich-vitis-vinifera-l-grape-skin-extract-on-metabolic-changes-induced-by-high-fat-diet-in-mice-involves-antiinflammatory-and-antioxidant-actions
#19
Gisele França da Costa, Izabelle Barcellos Santos, Graziele Freitas de Bem, Viviane Silva Cristino Cordeiro, Cristiane Aguiar da Costa, Lenize Costa Reis Marins de Carvalho, Dayane Teixeira Ognibene, Angela Castro Resende, Roberto Soares de Moura
We hypothesized that a polyphenol-rich extract from Vitis vinifera L. grape skin (GSE) may exert beneficial effects on obesity and related metabolic disorders induced by a high-fat diet (HFD). C57/BL6 mice were fed a standard diet (10% fat, control, and GSE groups) or an HFD (60% fat, high fat (HF), and HF + GSE) with or without GSE (200 mg/kg/day) for 12 weeks. GSE prevented weight gain; dyslipidemia; insulin resistance; the alterations in plasma levels of leptin, adiponectin, and resistin; and the deregulation of leptin and adiponectin expression in adipose tissue...
August 25, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28825851/restoring-diabetes-induced-autophagic-flux-arrest-in-ischemic-reperfused-heart-by-adipor-adiponectin-receptor-activation-involves-both-ampk-dependent-and-ampk-independent-signaling
#20
Yajing Wang, Bin Liang, Wayne Bond Lau, Yunhui Du, Rui Guo, Zheyi Yan, Lu Gan, Wenjun Yan, Jianli Zhao, Erhe Gao, Walter Koch, Xin-Liang Ma
Macroautophagy/autophagy is increasingly recognized as an important regulator of myocardial ischemia-reperfusion (MI-R) injury. However, whether and how diabetes may alter autophagy in response to MI-R remains unknown. Deficiency of ADIPOQ, a cardioprotective molecule, markedly increases MI-R injury. However, the role of diabetic hypoadiponectinemia in cardiac autophagy alteration after MI-R is unclear. Utilizing normal control (NC), high-fat-diet-induced diabetes, and Adipoq knockout (adipoq(-/-)) mice, we demonstrated that autophagosome formation was modestly inhibited and autophagosome clearance was markedly impaired in the diabetic heart subjected to MI-R...
August 21, 2017: Autophagy
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