PMID- 8781708 OWN - NLM STAT- MEDLINE DCOM- 19961209 LR - 20131121 IS - 0098-6127 (Print) IS - 0098-6127 (Linking) VI - 22 IP - 1 DP - 1996 TI - Physiological concentration of 17 beta-estradiol inhibits chemotaxis of human monocytes in response to monocyte chemotactic protein 1. PG - 24-35 AB - While estrogen is known to retard the development of atherosclerosis, the exact mechanism is unknown. The migration of monocytes into the arterial intima is important in the pathogenesis of atherosclerosis. Monocyte chemotactic protein 1 (MCP-1) is suggested to be a real chemotactic factor that is released from monocytes, endothelial cells, and smooth muscle cells. We investigated the effect of 17 beta-estradiol on the migration of human monocytes in response to MCP-1, using a modified Boyden chamber. A physiological concentration of 17 beta-estradiol (10(12) - 10(4)M) inhibited the migration of monocytes exposed to MCP-1. Two estrogen receptor antagonists, tamoxifen and clomiphene, each restored monocyte chemotaxis to MCP-1 to control level, even in the presence of 17 beta-estradiol, suggesting that estrogen receptors are related to the effect of 17 beta-estradiol. Progesterone and testosterone had no measurable effect on monocyte migration. These findings suggest that inhibition of the chemotactic response of monocytes exposed to MCP-1 may be one mechanism for the anti-atherogenic effect of 17 beta-estradiol. FAU - Yamada, K AU - Yamada K AD - Department of Geriatrics, Nagoya University School of Medicine, Japan. FAU - Hayashi, T AU - Hayashi T FAU - Kuzuya, M AU - Kuzuya M FAU - Naito, M AU - Naito M FAU - Asai, K AU - Asai K FAU - Iguchi, A AU - Iguchi A LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Artery JT - Artery JID - 7508494 RN - 0 (Chemokine CCL2) RN - 3XMK78S47O (Testosterone) RN - 4G7DS2Q64Y (Progesterone) RN - 4TI98Z838E (Estradiol) SB - IM MH - Arteriosclerosis/physiopathology MH - Cells, Cultured MH - Chemokine CCL2/*antagonists & inhibitors/pharmacology MH - Chemotaxis, Leukocyte/*drug effects MH - Estradiol/*pharmacology MH - Humans MH - Monocytes/drug effects MH - Progesterone/pharmacology MH - Testosterone/pharmacology EDAT- 1996/01/01 00:00 MHDA- 1996/01/01 00:01 CRDT- 1996/01/01 00:00 PHST- 1996/01/01 00:00 [pubmed] PHST- 1996/01/01 00:01 [medline] PHST- 1996/01/01 00:00 [entrez] PST - ppublish SO - Artery. 1996;22(1):24-35.