Jci_page_head_homepage_01 Jci_page_head_homepage_02
Jiann-Jyh Lai, Kuo-Pao Lai, Kuang-Hsiang Chuang, Philip Chang, I-Chen Yu, Wen-Jye Lin, Chawnshang Chang
Published in Volume 119, Issue 12
J Clin Invest. 2009; 119(12):3739–3751 doi:10.1172/JCI39335
Abstract | Full text | PDF | Supplemental material
Options: View larger image (or click on image)
Medium
Figure 7
AR enhances local TNF-α expression from macrophages through multiple mechanisms to suppress cutaneous wound healing.

Monocyte/macrophage AR function can be modulated by androgens or other factors to enhance inflammatory responses induced by injury. Overall, local TNF-α expression from macrophages is augmented by AR and critically mediates wound-healing suppression by targeting resident skin cells (keratinocytes and/or fibroblasts) via TNF-R1. AR enhances local TNF-α expression through 3 mechanisms. First, AR increases the circulating inflammatory monocyte population. Second, AR promotes the expression of CCR2 on inflammatory monocytes to enhance their chemotaxis in response to MCP-1. Third, AR can directly enhance TNF-α expression of macrophages in response to LPS stimulation. Treatment with ASC-J9 can antagonize the function of AR and promote cutaneous wound healing.