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|Increase or Decrease Hydrogen Sulfide Exert Opposite Lipolysis, but Reduce Global Insulin Resistance in High Fatty Diet Induced Obese Mice|
|Geng, Bin1; Cai, Bo1,2; Liao, Feng1; Zheng, Yang1; Zeng, Qiang3; Fan, Xiaofang4; Gong, Yongsheng4; Yang, Jichun1; Cui, Qing Hua1; Tang, Chaoshu1,4; Xu, Guo Heng1|
|WOS标题词||Science & Technology|
|研究领域[WOS]||Science & Technology - Other Topics|
|关键词[WOS]||HORMONE-SENSITIVE LIPASE ; ADIPOSE TRIGLYCERIDE LIPASE ; GAMMA-GLUTAMYL-TRANSFERASE ; PROTEIN-KINASE ; GLUCOSE-UTILIZATION ; 3T3L1 ADIPOCYTES ; PLASMA CYSTEINE ; METABOLISM ; PHOSPHORYLATION ; ACTIVATION|
Objective: Adipose tissue expressed endogenous cystathionine gamma lyase (CSE)/hydrogen sulfide (H2S) system. H2S precursor inhibited catecholamine stimulated lipolysis. Thus, we hypothesized that CSE/H2S system regulates lipolysis which contributed to the pathogenesis of insulin resistance.
Methods: We treated rat adipocyte with DL-propargylglycine (PAG, a CSE inhibitor), L-cysteine (an H2S precursor) plus pyridoxial phosphate (co-enzyme) or the H2S chronic release donor GYY4137, then the glycerol level was assayed for assessing the lipolysis. Then, the effects of PAG and GYY4137 on insulin resistance in high fatty diet (HFD) induced obese mice were investigated.
Results: Here, we found that PAG time-dependently increased basal or isoproterenol stimulated lipolysis. However, L-cysteine plus pyridoxial phosphate or GYY4137 significantly reduced it. PAG increased phosphorylated protein kinase A substrate, perilipin 1 and hormone sensitive lipase, but L-cysteine and GYY4137 decreased the parameters. In HFD induced obese mice, PAG increased adipose basal lipolysis, thus blunted fat mass increase, resulting in lowering insulin resistance evidenced by reduction of fasting glucose, insulin level, HOMA index, oral glucose tolerance test (OGTT) curve area and elevating the insulin tolerance test (ITT) response. GYY4137 inhibited lipolysis in vivo without increasing fat mass, but also ameliorated the insulin resistance in HFD mice.
Conclusion: These results implicated that inhibition endogenous CSE/H2S system in adipocytes increased lipolysis by a protein kinase A-perilipin/hormone-sensitive lipase pathway, thus blunted fat mass increase and reduced insulin resistance in obese mice; giving H2S donor decreased lipolysis, also reduced insulin resistance induced by HFD. Our data showed that increase or decrease H2S induced opposite lipolysis, but had the same effect on insulin resistance. The paradoxical regulation may be resulted from different action of H2S on metabolic and endocrine function in adipocyte.
|项目编号||2012CB517806 ; 2009CB941603 ; 81170235 ; 81070114|
|资助机构||Major State Basic Research Development Program of the People&prime ; s Republic of China ; National Natural Science Foundation of the People&prime ; s Republic China|
|作者单位||1.Guangdong Med Collage, Dept Physiol, Zhan Jiang, Guangdong, Peoples R China|
2.Peking Univ, Dept Physiol & Pathophysiol, Sch Basic Med Sci, Beijing 100871, Peoples R China
3.Chinese Peoples Liberat Army Gen Hosp, Int Med Ctr, Beijing, Peoples R China
4.Wenzhou Med Univ, Inst Hypoxia Med, Wen Zhou, Zhejiang, Peoples R China
|Geng, Bin,Cai, Bo,Liao, Feng,et al. Increase or Decrease Hydrogen Sulfide Exert Opposite Lipolysis, but Reduce Global Insulin Resistance in High Fatty Diet Induced Obese Mice[J]. PLOS ONE,2013,8(9).|
|APA||Geng, Bin.,Cai, Bo.,Liao, Feng.,Zheng, Yang.,Zeng, Qiang.,...&Xu, Guo Heng.(2013).Increase or Decrease Hydrogen Sulfide Exert Opposite Lipolysis, but Reduce Global Insulin Resistance in High Fatty Diet Induced Obese Mice.PLOS ONE,8(9).|
|MLA||Geng, Bin,et al."Increase or Decrease Hydrogen Sulfide Exert Opposite Lipolysis, but Reduce Global Insulin Resistance in High Fatty Diet Induced Obese Mice".PLOS ONE 8.9(2013).|
|Increase or Decrease（2018KB）||期刊论文||出版稿||开放获取||CC BY-NC-SA||浏览 请求全文|