Title |
Increased activation and cytokine secretion in B cells stimulated with leptin in aged humans
|
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Published in |
Immunity & Ageing, January 2013
|
DOI | 10.1186/1742-4933-10-3 |
Pubmed ID | |
Authors |
Sudhir Gupta, Sudhanshu Agrawal, Sastry Gollapudi |
Abstract |
Aging is associated chronic inflammation and autoimmunity, and increased levels of leptin. Increased levels of leptin are associated with inflammation and autoimmunity. We have recently reported that leptin activates B cells to induce secretion of proinflammatory and anti-inflammatory cytokines. Role of B cells and leptin in inflammation associated with aging has not been explored. In this study we demonstrate that leptin activates and induces significantly greater amount of IL-6, TNF-α, and IL-10 by B cells from aged humans as compared to young controls. This is associated with increased leptin-induced phosphorylation of STAT3 (signal transducer and activator of transcription-3) in B cells from aged humans as compared to young subjects. These data suggest that leptin-induced B cell-derived proinflammatory cytokines may play a role in chronic inflammation associated with human aging. |
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