Author: Wu, Huajie; Li, Yan; Wang, Yanxia; Xu, Dunquan; Li, Congcong; Liu, Manling; Sun, Xin; Li, Zhichao
Title: Tanshinone IIA Attenuates Bleomycin-Induced Pulmonary Fibrosis via Modulating Angiotensin-Converting Enzyme 2/ Angiotensin-(1-7) Axis in Rats Document date: 2014_4_7
ID: td2uk2wc_2
Snippet: Recent studies showed that renin angiotensin system (RAS) is involved in the progression of PF evidenced by angiotensinogen (AGT) genes polymorphism association with PF, and its overexpression in those patients with PF [4, 5] . After cleaved by angiotensin converting enzyme (ACE), angiotensin (ANG) I turns into ANG II. The activated ANG II answers for up-regulating transforming growth factor-β (TGF-β) which is pivotal in modulating the differen.....
Document: Recent studies showed that renin angiotensin system (RAS) is involved in the progression of PF evidenced by angiotensinogen (AGT) genes polymorphism association with PF, and its overexpression in those patients with PF [4, 5] . After cleaved by angiotensin converting enzyme (ACE), angiotensin (ANG) I turns into ANG II. The activated ANG II answers for up-regulating transforming growth factor-β (TGF-β) which is pivotal in modulating the differentiation of fibroblast to myofibroblasts [6] . Moreover, ANG II is also believed to associate with inflammatory responses and cell apoptosis during the progress of various lung diseases [7, 8] . Recent discovery of a homologue of ACE, named ACE-2, and its enzymatic product ANG-(1-7) could counter the detrimental effects of ACE and offer beneficial effects by limiting ANGII accumulation during kinds of pathophysiological processes [9] [10] [11] . Studies also demonstrated that ACE-2/ANGA (1-7) plays a key negative regulatory factor for severity of lung edema and acute lung failure [12, 13] . Recently, the protective effects of ACE-2/ANG-(1-7) during the progression of PF were increasingly being investigated [14] [15] [16] .
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