生物活性 | |||
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描述 | Levocetirizine 2HCl ((R)-Cetirizine dihydrochloride) is a third-generation peripheral H1-receptor antagonist. Levocetirizine dihydrochloride is an antihistaminic agent which is the R-enantiomer of Cetirizine. Levocetirizine dihydrochloride has a higher affinity for the histamine H1-receptor than (S)-Cetirizine and can effectively treat allergic rhinitis and chronic idiopathic urticaria[3]. Levocetirizine has modest sedative effects with a risk ratio of 1.67 when compared with placebo[4]. Montelukast, levocetirizine and their combination is equally effective in controlling symptoms, of allergic rhinitis[5]. Male Sprague Dawley rats received either levocetirizine (1 mg/kg/day, orally) or the vehicle of the drug (2 ml/kg/day, orally) for 1 week before a single IP injection of LPS (7.5 mg/kg). Levocetirizine attenuated lung edema and mitigated the increases in BALF (bronchoalveolar lavage fluid) protein levels, LDH (lactate dehydrogenase) activity, and lung leukocyte recruitment in LPS-challenged rats. Additionally, TNF-α protein levels in BALF and lung tissue were diminished by levocetirizine administration. Levocetirizine may offer protection against lung tissue damage and inflammation in LPS-challenged rats[6]. |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.17mL 0.43mL 0.22mL |
10.83mL 2.17mL 1.08mL |
21.65mL 4.33mL 2.17mL |
参考文献 |
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