PMID- 23049171 OWN - NLM STAT- MEDLINE DCOM- 20130204 LR - 20211021 IS - 1466-1861 (Electronic) IS - 0962-9351 (Print) IS - 0962-9351 (Linking) VI - 2012 DP - 2012 TI - MCP-1-induced histamine release from mast cells is associated with development of interstitial cystitis/bladder pain syndrome in rat models. PG - 358184 LID - 10.1155/2012/358184 [doi] LID - 358184 AB - OBJECTIVE: Interstitial cystitis/bladder pain syndrome (IC/BPS) is characterized by overexpression of monocyte chemoattractant protein-1 (MCP-1) in bladder tissues and induction of mast cell (MC) degranulation. This study was undertaken to explore the mechanism of action of MCP-1 in the development of IC/BPS. METHODS: A rat model of IC/BPS was developed by perfusing bladders of nine SPF- grade female Sprague-Dawley rats with protamine sulfate and lipopolysaccharide (PS+LPS). MCP-1 and histamine levels in bladder tissue and urine were detected by immunohistochemistry and ELISA. MC degranulation was measured by immunofluorescence techniques and chemokine (C-C motif) receptor 2 (CCR2) was assayed by flow cytometry. RESULTS: Increased MCP-1 expression in bladder tissue and elevated MCP-1 and histamine levels were observed in the urine of LS+LPS-treated rats. This was accompanied by the expression of CCR2 on MC surfaces, suggesting MCP-1 may induce MC degranulation through CCR2. Exposure to LPS stimulated MCP-1 expression in bladder epithelial cells, and exposure to MCP-1 induced histamine release from MCs. CONCLUSIONS: MCP-1 upregulation in IC/BPS is one of possible contributing factors inducing histamine release from MCs. CCR2 is involved in the process of mast cell degranulation in bladder tissues. These changes may contribute to the development of symptoms of IC/BPS. FAU - Lv, Jianwei AU - Lv J AD - Department of Urology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China. FAU - Huang, Yiran AU - Huang Y FAU - Zhu, Shiguo AU - Zhu S FAU - Yang, Ganggang AU - Yang G FAU - Zhang, Yujian AU - Zhang Y FAU - Leng, Jing AU - Leng J FAU - Bo, Juanjie AU - Bo J FAU - Liu, Dongming AU - Liu D LA - eng PT - Journal Article DEP - 20120919 PL - United States TA - Mediators Inflamm JT - Mediators of inflammation JID - 9209001 RN - 0 (Chemokine CCL2) RN - 0 (Lipopolysaccharides) RN - 0 (Receptors, CCR2) RN - 820484N8I3 (Histamine) SB - IM MH - Animals MH - Cell Line MH - Chemokine CCL2/*metabolism MH - Cystitis, Interstitial/*metabolism MH - Female MH - Flow Cytometry MH - Histamine/metabolism MH - Histamine Release/physiology MH - Humans MH - Immunohistochemistry MH - Lipopolysaccharides/pharmacology MH - Mast Cells/drug effects/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Receptors, CCR2/metabolism PMC - PMC3459284 EDAT- 2012/10/11 06:00 MHDA- 2013/02/05 06:00 PMCR- 2012/09/19 CRDT- 2012/10/11 06:00 PHST- 2012/02/29 00:00 [received] PHST- 2012/06/08 00:00 [revised] PHST- 2012/06/22 00:00 [accepted] PHST- 2012/10/11 06:00 [entrez] PHST- 2012/10/11 06:00 [pubmed] PHST- 2013/02/05 06:00 [medline] PHST- 2012/09/19 00:00 [pmc-release] AID - 10.1155/2012/358184 [doi] PST - ppublish SO - Mediators Inflamm. 2012;2012:358184. doi: 10.1155/2012/358184. Epub 2012 Sep 19.