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asmakast 10 mg 30 f.c.tabs
علاج أزمات الصدر وصعوبة وضيق التنفس --حالات الكحة والسعال المزمن --لمنع تضييق الشعب الهوائية أثناء ممارسة الرياضة
Drug Monograph — montelukast
echanism of Action The cysteinyl leukotrienes (LTC 4 , LTD 4 , LTE 4 ) are products of arachidonic acid metabolism and are released from various cells, including mast cells and eosinophils. These eicosanoids bind to cysteinyl leukotriene (CysLT) receptors. The CysLT type-1 (CysLT 1 ) receptor is found in the human airway (including airway smooth muscle cells and airway macrophages) and on other pro-inflammatory cells (including eosinophils and certain myeloid stem cells). CysLTs have been correlated with the pathophysiology of asthma and allergic rhinitis. In asthma, leukotriene-mediated effects include airway edema, smooth muscle contraction, and altered cellular activity associated with the inflammatory process. In allergic rhinitis, CysLTs are released from the nasal mucosa after allergen exposure during both early- and late-phase reactions and are associated with symptoms of allergic rhinitis. Montelukast is an orally active compound that binds with high affinity and selectivity to the CysLT 1 receptor (in preference to other pharmacologically important airway receptors, such as the prostanoid, cholinergic, or β-adrenergic receptor). Montelukast inhibits physiologic actions of LTD 4 at the CysLT 1 receptor without any agonist activity.
هذه المعلومات الدوائية مُستخلصة من مصادر طبية موثوقة (FDA/Altibbi) وهي للتثقيف الصحي العام فقط، ولا تُغني عن استشارة الصيدلي أو الطبيب المختص. لا تبدأ أو توقف أو تغيّر جرعة أي دواء بدون إشراف طبي.