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Montelukast modulates lung CysLT(1) receptor expression and eosinophilic inflammation in asthmatic mice

  
@article{APS8389,
	author = {Yan-jun ZHANG and Lei ZHANG and Shao-bin WANG and Hua-hao SHEN and Er-qing WEI},
	title = {Montelukast modulates lung CysLT(1) receptor expression and eosinophilic inflammation in asthmatic mice},
	journal = {Acta Pharmacologica Sinica},
	volume = {25},
	number = {10},
	year = {2016},
	keywords = {},
	abstract = {AIM:
To determine the expressions of cysteinyl leukotriene receptors, CysLT1 and CysLT2, in airway eosinophilic inflammation of OVA-induced asthmatic mice and the modulation by montelukast, a CysLT1 receptor antagonist.
METHODS:
Asthma model was induced by chronic exposure to ovalbumin (OVA) in C57BL/6 mice. The eosinophils in bronchoalveolar lavage (BAL) fluid and lung tissues were counted, IL-5 level in BAL fluid was measured, and CysLT1 and CysLT2 receptor mRNA expressions were detected by semi-quantitative RT-PCR.
RESULTS:
Montelukast (6 mg/kg, once per day for 20 d) significantly suppressed the increased eosinophils in BAL fluid and lung tissue, and increased IL-5 level in BAL fluid in OVA challenged mice. OVA challenge increased CysLT1 but decreased CysLT2 receptor mRNA expression. Montelukast inhibited the increased CysLT1 but not the reduced CysLT2 expression after OVA challenge.
CONCLUSION:
CysLT receptors are modulated immunologically, and montelukast inhibits up-regulation of CysLT1 receptor and airway eosinophilic inflammation in asthmatic mice.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/8389}
}