Essential Role of Mast Cells in the Visceral Hyperalgesia Induced by T. spiralis Infection and Stress in Rats
| Autor: | Chang-Qing Yang, Yan-Yu Wei, Chan-Juan Zhong, Li-Ping Duan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Mediators of Inflammation, Vol 2012 (2012) |
| Druh dokumentu: | article |
| ISSN: | 0962-9351 1466-1861 |
| DOI: | 10.1155/2012/294070 |
| Popis: | Mast cells (MCs) deficient rats (Ws/Ws) were used to investigate the roles of MCs in visceral hyperalgesia. Ws/Ws and wild control (+/+) rats were exposed to T. spiralis or submitted to acute cold restraint stress (ACRS). Levels of proteinase-activated receptor 2 (PAR2) and nerve growth factor (NGF) were determined by immunoblots and RT-PCR analysis, and the putative signal pathways including phosphorylated extracellular-regulated kinase (pERK1/2) and transient receptor potential vanilloid receptor 1 (TRPV1) were further identified. Visceral hyperalgesia triggered by ACRS was observed only in +/+ rats. The increased expression of PAR2 and NGF was observed only in +/+ rats induced by T. spiralis and ACRS. The activation of pERK1/2 induced by ACRS occurred only in +/+ rats. However, a significant increase of TRPV1 induced by T. spiralis and ACRS was observed only in +/+ rats. The activation of PAR2 and NGF via both TRPV1 and pERK1/2 signal pathway is dependent on MCs in ACRS-induced visceral hyperalgesia rats. |
| Databáze: | Directory of Open Access Journals |
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