PMID- 18622025 OWN - NLM STAT- MEDLINE DCOM- 20090302 LR - 20201209 IS - 1460-2385 (Electronic) IS - 0931-0509 (Linking) VI - 23 IP - 11 DP - 2008 Nov TI - Thrombin enhances the production of monocyte chemoattractant protein-1 and macrophage inflammatory protein-2 in cultured rat glomerular epithelial cells. PG - 3412-7 LID - 10.1093/ndt/gfn352 [doi] AB - BACKGROUND: Glomerular crescents play an important role in progressive glomerular injury. The lesions consist of epithelial cells, macrophages and deposits of fibrin and extracellular matrix. Monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-2 (MIP-2) are members of chemokine subfamilies. MCP-1 and MIP-2 are potent chemoattractant leukocyte cytokines, and they may be involved in crescent formation. Thrombin participates in fibrin formation. We hypothesized that thrombin stimulates the production of MCP-1 and MIP-2 by glomerular epithelial cells (GECs). METHODS: Cultured rat GECs from the 19th to the 24th passage were used. We incubated GECs with or without thrombin to examine the effect of thrombin on the production of MCP-1 and MIP-2. The levels of MCP-1 and MIP-2 were measured in the cell supernatants by enzyme-linked immunosorbent assay (ELISA). The mRNA expressions of MCP-1 and MIP-2 were analysed by real-time reverse transcriptase-polymerase chain reaction (RT-PCR). We also examined the inhibitory effect of argatroban, a synthetic thrombin inhibitor, and prednisolone in the production of MCP-1 and MIP-2 stimulated by thrombin. RESULTS: Thrombin stimulated the production of MCP-1 and MIP-2 in a dose- and time-dependent manner. Thrombin also enhanced the mRNA expressions of MCP-1 and MIP-2 in the GECs. The stimulating effect of thrombin on the production of MCP-1 and MIP-2 was inhibited by the addition of argatroban or prednisolone. CONCLUSIONS: We demonstrated a novel role of thrombin: it stimulates the production of MCP-1 and MIP-2 by GECs. It is clinically important that the inhibition of these chemokines leads to the improvement of crescentic glomerulonephritis. Anti-thrombin drugs and prednisolone may be useful in treating crescentic glomerulonephritis. FAU - Fujita, Takeshi AU - Fujita T AD - Department of Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, 036-8562, Japan. fuji-ta@cc.hirosaki-u.ac.jp FAU - Yamabe, Hideaki AU - Yamabe H FAU - Shimada, Michiko AU - Shimada M FAU - Murakami, Reiichi AU - Murakami R FAU - Kumasaka, Ryuichiro AU - Kumasaka R FAU - Nakamura, Norio AU - Nakamura N FAU - Osawa, Hiroshi AU - Osawa H FAU - Okumura, Ken AU - Okumura K LA - eng PT - Journal Article DEP - 20080712 PL - England TA - Nephrol Dial Transplant JT - Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association JID - 8706402 RN - 0 (Anticoagulants) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CXCL2) RN - 0 (Cxcl2 protein, rat) RN - 0 (Glucocorticoids) RN - 0 (Pipecolic Acids) RN - 0 (RNA, Messenger) RN - 0 (Sulfonamides) RN - 94ZLA3W45F (Arginine) RN - 9PHQ9Y1OLM (Prednisolone) RN - EC 3.4.21.5 (Thrombin) RN - IY90U61Z3S (argatroban) SB - IM MH - Animals MH - Anticoagulants/pharmacology MH - Arginine/analogs & derivatives MH - Cells, Cultured MH - Chemokine CCL2/*metabolism MH - Chemokine CXCL2/*metabolism MH - Glucocorticoids/pharmacology MH - Male MH - Pipecolic Acids/pharmacology MH - Podocytes/cytology/*metabolism MH - Prednisolone/pharmacology MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Sulfonamides MH - Thrombin/*physiology EDAT- 2008/07/16 09:00 MHDA- 2009/03/03 09:00 CRDT- 2008/07/16 09:00 PHST- 2008/07/16 09:00 [pubmed] PHST- 2009/03/03 09:00 [medline] PHST- 2008/07/16 09:00 [entrez] AID - gfn352 [pii] AID - 10.1093/ndt/gfn352 [doi] PST - ppublish SO - Nephrol Dial Transplant. 2008 Nov;23(11):3412-7. doi: 10.1093/ndt/gfn352. Epub 2008 Jul 12.