Mitochondrial uncoupling, ROS generation and cardioprotection

نویسندگان

چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Mitochondrial uncoupling, with low concentration FCCP, induces ROS-dependent cardioprotection independent of KATP channel activation.

OBJECTIVE Both K(ATP) channel opening drugs and ischaemic preconditioning have been suggested to protect the ischaemic heart by acting on K(ATP) channels in the inner mitochondrial membrane, uncoupling the proton gradient and partially dissipating the mitochondrial membrane potential. The aim of these studies was to use low concentrations of FCCP, a mitochondrial protonophore, to bypass the mit...

متن کامل

Mitochondrial ('mild') uncoupling and ROS production: physiologically relevant or not?

During the last decade, the possibility that 'mild' uncoupling could be protective against oxidative damage by diminishing ROS (reactive oxygen species) production has attracted much interest. In the present paper, we briefly examine the evidence for this possibility. It is only ROS production from succinate under reverse electron-flow conditions that is sensitive to membrane potential fluctuat...

متن کامل

Mitochondrial reactive oxygen species: which ROS signals cardioprotection?

Mitochondria are the major effectors of cardioprotection by procedures that open the mitochondrial ATP-sensitive potassium channel (mitoKATP), including ischemic and pharmacological preconditioning. MitoKATP opening leads to increased reactive oxygen species (ROS), which then activate a mitoKATP-associated PKCε, which phosphorylates mitoKATP and leaves it in a persistent open state (Costa AD, G...

متن کامل

Bradykinin induces mitochondrial ROS generation via NO, cGMP, PKG, and mitoKATP channel opening and leads to cardioprotection.

Bradykinin (BK) mimics ischemic preconditioning by generating reactive oxygen species (ROS). To identify intermediate steps that lead to ROS generation, rabbit cardiomyocytes were incubated in reduced MitoTracker Red stain, which becomes fluorescent after exposure to ROS. Fluorescence intensity in treated cells was expressed as a percentage of that in paired, untreated cells. BK (500 nM) caused...

متن کامل

Exogenous nitric oxide generates ROS and induces cardioprotection: involvement of PKG, mitochondrial KATP channels, and ERK.

We examined whether cGMP-dependent protein kinase (PKG) and mitochondrial ATP-sensitive potassium (K(ATP)) channels are involved in S-nitroso-N-acetyl penicillamine (SNAP)-induced reactive oxygen species (ROS) generation. SNAP significantly increased ROS generation in cardiomyocytes. This increase was suppressed by both 5-hydroxydecanoate (5-HD) and glibenclamide. Direct opening of mitochondria...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Bioenergetics

سال: 2018

ISSN: 0005-2728

DOI: 10.1016/j.bbabio.2018.05.019