吸入的白藜芦醇治疗小鼠肺中与老年相关的退行性变化缓慢。
摘要来源:
胸腔。 2017年1月9日。epub 2017 1月9日。pmid: 28070015 28070015 Reddy,Jooeun Lee,David Warburton
文章隶属关系:Barbara driscoll
摘要:
背景: 肺老化,诸如COPD和Emphyseme等长期肺部疾病的重要危险因素和伴随伴奏的阳性和伴奏。同样,在过早衰老的端粒酶null(TERC - / - )小鼠中,肺泡上皮2型细胞(AEC2)的p53稳定在肺部功能下降。白藜芦醇(RSL)是一种植物植物甲状腺素,以前在增强无脊椎动物寿命和支持哺乳动物M口服交货时,USCLE代谢。 Here, we tested whether inhaled RSL could protect young, terc-/- mice from accelerated ageing of the lung.
METHODS: terc-/- mice aged 2 months inhaled 1 mg/kg RSL that was instilled intratracheally once per month for 3 months. One month after the last inhalation, whole lung function, structure and cellular DNA damage were evaluated and AEC2 survival was assessed by western blotting for survival pathway gene expression.
RESULTS: RSL treatments delayed the loss of lung compliance (p<0.05), maintained lung structure (p<0.001)并通过TDT Nick-End标签(TUNEL)测量的实质细胞DNA损伤阻塞。 RSL是脱乙酰基酶SIRT1的已知激动剂,通过刺激SIRT1表达,促进p53不稳定和降低Bax表达并维持过氧化物酶体增殖物 - 活性的表达水平,从而支持AEC2存活。孤独的受体γ共激活剂1-α(PGC-1α),活化的P-AKT和P-MDM2以及灭活的磷酸磷酸酶和Tensin同源物(P-PTEN)。
spection in> spane spanion span a> <通过维持AEC2完整性,用于减慢肺功能和结构的衰老相关的恶化。