PMID- 24360114 OWN - NLM STAT- MEDLINE DCOM- 20140721 LR - 20141120 IS - 0376-2491 (Print) IS - 0376-2491 (Linking) VI - 93 IP - 34 DP - 2013 Sep 10 TI - [Functional role of caveolin-1 in airway smooth muscle cells proliferation and regulatory effect of roxithromycin]. PG - 2750-4 AB - OBJECTIVE: To explore the functional role of caveolin-1 in airway smooth muscle cells (ASMCs) proliferation and examine the regulatory effect of roxithromycin. METHODS: The rat model of bronchial asthma was established. Electron microscope was employed to observe the status of caveolae and light microscope for the histological changes in pulmonary tissues. The primarily cultured ASMCs were divided into 5 groups: control (group A), asthmatic ASMCs (group B), PD98059 (group C), roxithromycin (group D) and methyl-beta-cyclodextrin (group E). Cell proliferation was detected by Cell Counting Kit-8 (CCK-8). And the expressions of caveolin-1, extracellular regulated protein kinases (ERK) and monocyte chemotactic protein (MCP)-1 were detected by Western blot and reverse transcription polymerase chain reaction (RT-PCR). RESULTS: The cell proliferation of asthmatic ASMCs (0.68 +/- 0.15, 0.63 +/- 0.13) in groups C and D were significantly less than those in group B (0.96 +/- 0.14) (both P < 0.05) while group E was more than group B (1.26 +/- 0.11 vs 0.96 +/- 0.14, P < 0.05). The content of caveolin-1 (0.392 +/- 0.064, 0.332 +/- 0.057) in groups C and D were higher than those in group B (0.237 +/- 0.032) (both P < 0.05) while ERK1/2 protein level in groups C and D (0.241 +/- 0.017, 0.268 +/- 0.007) were less than those in group B (0.346 +/- 0.009) (both P < 0.01). And MCP-1 protein level in groups C and D (0.198 +/- 0.015, 0.286 +/- 0.019) were less than those in group B (0.482 +/- 0.026) (both P < 0.01). The ERK mRNA level in groups C and D (0.277 +/- 0.043, 0.338 +/- 0.026) were less than those in group B (0.591 +/- 0.022) (both P < 0.01). And also MCP-1 mRNA in groups C and D (0.212 +/- 0.042, 0.249 +/- 0.032) were less than those in group B (0.676 +/- 0.053) (all P < 0.01) CONCLUSIONS: Caveolin-1 preventing the proliferation of asthmatic ASMCs is most likely mediated by ERK1/2 signal pathway and a down-regulation of MCP-1 expression. And roxithromycin reduces the proliferation of asthmatic ASMCs through up-regulating the expression of caveolin-1 and inhibiting the expression of MCP-1. FAU - Zeng, Wei-xian AU - Zeng WX AD - Department of Emergency Medicine, Second Affiliated Hospital, Wenzhou Medical College, Wenzhou 325027, China. FAU - Dai, Yuan-rong AU - Dai YR AD - Department of Emergency Medicine, Second Affiliated Hospital, Wenzhou Medical College, Wenzhou 325027, China. Email: daiyr@126.com. LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Yi Xue Za Zhi JT - Zhonghua yi xue za zhi JID - 7511141 RN - 0 (Cav1 protein, rat) RN - 0 (Caveolin 1) RN - 0 (Ccl2 protein, rat) RN - 0 (Chemokine CCL2) RN - 21KOF230FA (Roxithromycin) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) SB - IM MH - Animals MH - Asthma/metabolism/*pathology MH - Caveolin 1/*metabolism MH - Cell Proliferation MH - Cells, Cultured MH - Chemokine CCL2/metabolism MH - Male MH - Mitogen-Activated Protein Kinase 3/metabolism MH - Myocytes, Smooth Muscle/metabolism/*pathology MH - Rats MH - Rats, Wistar MH - Respiratory System/metabolism/*pathology MH - Roxithromycin/*pharmacology EDAT- 2013/12/24 06:00 MHDA- 2014/07/22 06:00 CRDT- 2013/12/24 06:00 PHST- 2013/12/24 06:00 [entrez] PHST- 2013/12/24 06:00 [pubmed] PHST- 2014/07/22 06:00 [medline] PST - ppublish SO - Zhonghua Yi Xue Za Zhi. 2013 Sep 10;93(34):2750-4.