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首页> 外文期刊>Biogerontology >l-Carnitine inhibits the senescence-associated secretory phenotype of aging adipose tissue by JNK/p53 pathway
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l-Carnitine inhibits the senescence-associated secretory phenotype of aging adipose tissue by JNK/p53 pathway

机译:L-肉碱通过JNK / P53途径抑制老化脂肪组织的衰老相关分泌表型

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摘要

Senescence-associated secretory phenotype (SASP) plays a role in aging adipose tissue dysfunction by directly promoting chronic inflammation. The JNK/p53 pathway was reported as a potential mechanism that mediates SASP. In this study, we investigated the effects of l-carnitine, an inhibitor of the JNK/p53 pathway in adipose tissue SASP and dysfunction. Young and aging rat were given l-carnitine by gavage. Next, we detected the senescence, cytokines expression, chronic inflammation and insulin resistance of adipose tissue. Additionally, JNK/p53 pathway was estimated. Our results show a significant increase expression of SASP components in the adipose tissue of aging rats compared to young rats. Further, we found that infiltration of immune cells and the expression of pro-inflammatory cytokines were enhanced in aging adipose tissue while insulin signaling activity was reduced in aging adipose tissue. Interestingly, l-carnitine markedly reduced the expression of SASP factors. l-Carnitine could significantly reduce chronic inflammation, improving insulin resistance. Further, l-carnitine inhibited SASP by inhibiting JNK/p53 pathway. l-Carnitine inhibited SASP by JNK/p53 pathway and attenuated adipose tissue dysfunction of aging.
机译:通过直接促进慢性炎症,衰老相关的分泌表型(SASP)在老化脂肪组织功能障碍中起作用。 JNK / P53途径报告为介导SASP的潜在机制。在这项研究中,我们研究了L-肉碱,JNK / P53途径中脂肪组织SASP和功能障碍的抑制剂的影响。幼小和老化的大鼠通过饲养给予L-肉碱。接下来,我们检测到脂肪组织的衰老,细胞因子表达,慢性炎症和胰岛素抵抗力。此外,估计了JNK / P53途径。与幼大鼠相比,我们的结果表明,老年大鼠脂肪组织中SaSP组分的显着增加。此外,我们发现在老化脂肪组织中提高了免疫细胞的浸润和促炎细胞因子的表达,而老化脂肪组织的胰岛素信号传导活性降低。有趣的是,L-肉碱明显降低了SASP因素的表达。 L-肉碱可显着降低慢性炎症,提高胰岛素抵抗力。此外,通过抑制JNK / P53途径来抑制L-肉碱。 L-肉碱抑制SASP通过JNK / P53途径,并减毒脂肪组织功能障碍。

著录项

  • 来源
    《Biogerontology》 |2019年第2期|共9页
  • 作者单位

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

    Shandong Univ Chinese Natl Hlth Commiss Key Lab Cardiovasc Remodeling &

    Funct Res Chinese Minist Educ Qilu Hosp 107 Wen Hua Xi Rd Jinan 250012 Shandong Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 老年病学;
  • 关键词

    Aging; SASP; Adipose tissue; l-Carnitine;

    机译:老化;SASP;脂肪组织;左旋肉碱;

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