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    • 42. 发明授权
    • Synthetic lung surfactant
    • 合成肺表面活性剂
    • US5614216A
    • 1997-03-25
    • US442079
    • 1995-05-16
    • Andrew S. Janoff
    • Andrew S. Janoff
    • A61K9/127
    • A61K31/685Y10S514/958
    • A synthetic lung surfactant composition and process for depositing a monolayer of a phosphatidylcholine lung surfactant to the alveoli of a mammal. The composition comprises a phosphatidylcholine lung surfactant, a phosphatidylethanolamine, and cholesterol in proportions such that the composition is in lamellar form at or below a first temperature and in non-lamellar form at a second temperature which is higher than the first temperature. A preferred phosphatidylcholine lung surfactant for use in this invention is dipalmitoyl phosphatidylcholine (DPPC), which is known to be the major lipid constituent of natural mammalian lung surfactant, and a preferred phosphatidylethanolamine is dioleoyl phosphatidylethanolamine (DOPE). In particular embodiments, the composition is in lamellar form at about room temperature (25.degree. C.), and in non-lamellar form at a temperature in the range of about 30.degree. to 37.degree. C., which is at or below normal human body temperature (37.degree. C.). The composition may also include one or more therapeutic peptides or other pharmaceutical agents. The synthetic lung surfactant may be used to treat a mammal for respiratory distress syndrome caused by an insufficiency of natural lung surfactant.
    • 一种合成肺表面活性剂组合物和用于将磷脂酰胆碱肺表面活性剂的单层沉积到哺乳动物的肺泡的方法。 组合物包含磷脂酰胆碱肺表面活性剂,磷脂酰乙醇胺和胆固醇,其比例使得组合物在低于第一温度或低于第一温度的层状形式,并且在高于第一温度的第二温度下以非层状形式。 用于本发明的优选的磷脂酰胆碱肺表面活性剂是二棕榈酰磷脂酰胆碱(DPPC),其已知是天然哺乳动物肺表面活性剂的主要脂质组分,优选的磷脂酰乙醇胺是二油酰磷脂酰乙醇胺(DOPE)。 在具体实施方案中,组合物在约室温(25℃)下为薄片形式,并且在约30-37℃的温度范围内以非层状形式,其处于或低于正常人 体温(37℃)。 组合物还可以包括一种或多种治疗性肽或其它药剂。 合成肺表面活性剂可用于治疗由天然肺表面活性剂不足引起的呼吸窘迫综合征的哺乳动物。