Abstract OBJECTIVE: To investigate the effect of montelukast on the expression of sensory neuropeptide (neurokinin-1) receptor (NK1R) in young asthmatic rats with airway remodeling. METHODS: Twenty-four Sprague-Dawley rats were randomly divided into control group (n=8), asthma (n=8), and montelukast groups (n=8). A rat model of asthma was induced by ovalbumin (OVA) inhalation. Normal saline was used instead of sensitizing solution and 1% OVA in the control group. Each rat in the montelukast group was given montelukast (15 mg/kg) by gavage 2 h before OVA inhalation. All rats received their respective treatments for 8 weeks. Immunohistochemistry, real-time PCR and Western blot were used to measure the mRNA and protein expression levels of NK1R in asthmatic airway remolding and to evaluate the effect of montelukast on NK1R expression. RESULTS: The asthma group showed significantly higher mRNA and protein expression levels of NK1R than the control group (P<0.01). The mRNA and protein expression levels of NK1R in the montelukast group were significantly lower than in the asthma group (P<0.05), but significantly higher than in the control group (P<0.01). CONCLUSIONS: Rats with induced asthma have upregulated NK1R expression in the airway, and montelukast can downregulate NK1R expression during airway remodeling.
WEI Bing,SHANG Yun-Xiao,LI Miao et al. Effect of montelukast on the expression of neurokinin-1 receptor in young asthmatic rats with airway remodeling[J]. CJCP, 2013, 15(4): 298-301.
WEI Bing,SHANG Yun-Xiao,LI Miao et al. Effect of montelukast on the expression of neurokinin-1 receptor in young asthmatic rats with airway remodeling[J]. CJCP, 2013, 15(4): 298-301.
［11］Vanacker NJ, Palmans E, Kips JC, Pauwels RA. Fluticasone inhibits but does not reverse allergen induced structural airway changes［J］. Am J Respir Crit Care Med, 2001, 163 (3 Pt 1): 674-679.
［12］Mehrotra AK, Henderson WR Jr. The role of leukotrienes in airway remodeling［J］. Curr Mol Med, 2009, 9(3): 383-391.
［13］Bossé Y, Stankova J, Rola-Pleszczynski M. Cysteinyl leukotrienes in asthmatic airway smooth muscle cell hyperplasia［J］. Ann Allergy Asthma Immunol, 2009, 102(1): 16-21.
［14］Potter-Perigo S, Baker C, Tsoi C, Braun KR, Isenhath S, Altman GM, et al. Regulation of proteoglycan synthesis by leukotriene d4 and epidermal growth factor in bronchial smooth muscle cells［J］. Am J Respir Cell Mol Biol, 2004, 30(1): 101-108.
［15］Henderson WR Jr, Tang LO, Chu SJ, Tsao SM, Chiang GK, Jones F, et al. A role for cysteinyl leukotrienes in airway remodeling in a mouse asthma model［J］. Am J Respir Crit Care Med, 2002, 165(1): 108-116.
［16］Muz MH, Deveci F, Bulut Y. Ilhan N, Yekeler H, Turgut T. The effects of low dose leukotriene receptor antagonist therapy on airway remodeling and cysteinyl leukotriene expression in a mouse asthma model［J］. Exp Mol Med, 2006, 38(2): 109-118.
