Mitochondria-derived superoxide links to tourniquet-induced apoptosis in mouse skeletal muscle.
Mitochondria-derived superoxide links to tourniquet-induced apoptosis in mouse skeletal muscle.
复制标题
DOI:
10.1371/journal.pone.0043410
复制
发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Li YL
中科院分区:
文献类型:
--
作者:
Tran TP;Tu H;Liu J;Muelleman RL;Li YL
Our previous study has reported that superoxide mediates ischemia-reperfusion (IR)-induced necrosis in mouse skeletal muscle. However, it remains poorly understood whether IR induces apoptosis and what factors are involved in IR-induced apoptosis in skeletal muscle. Using a murine model of tourniquet-induced hindlimb IR, we investigated the relationship between mitochondrial dysfunction and apoptosis in skeletal muscle. Hindlimbs of C57/BL6 mice were subjected to 3 h ischemia and 4 h reperfusion via placement and release of a rubber tourniquet at the greater trochanter. Compared to sham treatment, tourniquet-induced IR significantly elevated mitochondria-derived superoxide production, activated opening of mitochondrial permeability transition pore (mPTP), and caused apoptosis in the gastrocnemius muscles. Pretreatment with a superoxide dismutase mimetic (tempol, 50 mg/kg) or a mitochondrial antioxidant (co-enzyme Q10, 50 mg/kg) not only decreased mitochondria-derived superoxide production, but also inhibited mPTP opening and apoptosis in the IR gastrocnemius muscles. Additionally, an inhibitor of mPTP (cyclosporine A, 50 mg/kg) also inhibited both mPTP opening and apoptosis in the IR gastrocnemius muscles. These results suggest that mitochondria-derived superoxide overproduction triggers the mPTP opening and subsequently causes apoptosis in tourniquet-induced hindlimb IR.
登录
查看更多内容
影响因子:
9.5
作者:
Baines CP
通讯作者:
Baines CP
DOI:
10.1097/ta.0b013e318160937e
发表时间:
2008-02-01
影响因子:
--
作者:
Beekley, Alec C.;Sebesta, James A.;Holcomb, John B.
通讯作者:
Holcomb, John B.
DOI:
10.1016/s0967-2109(02)00070-4
发表时间:
2002-12-01
期刊:
CARDIOVASCULAR SURGERY
影响因子:
--
作者:
Blaisdell, FW
通讯作者:
Blaisdell, FW
影响因子:
2.9
作者:
Li, Yan;Shen, Lan;Xiong, Lize
通讯作者:
Xiong, Lize
DOI:
10.1196/annals.1341.022
发表时间:
2005-01-01
期刊:
COMMUNICATIVE CARDIAC CELL
影响因子:
--
作者:
Honda, HM;Korge, P;Weiss, JN
通讯作者:
Weiss, JN