Analysis of mitochondrial free radical generation in animal models of neuronal disease.
Mitochondria, the power plant of all eukaryotic cells, produce cellular energy in the form of ATP via electron transport and oxidative phosphorylation. However, the mitochondria leak electrons that can act as major sources of oxidative stress, and their dysfunction, have been proposed as causative events underlying neurodegeneration in stroke and neurodegenerative diseases. We examined whether MitoTracker Red CM-H(2)XRos, a rosamine derivative used to detect mitochondrial free radicals in vitro, would be applied to analyze the mitochondrial free radicals in various models of neurological diseases in vivo. The injections of MitoTracker Red CM-H(2)XRos revealed generation of mitochondrial free radicals primarily in vulnerable neurons following focal cerebral ischemia as well as administration of Fe(2+) or 3-nitropropionic acid. MitoTracker Red CM-H(2)XRos was retained after fixation, compatible with immunocytochemistry or nuclear staining, and can be applied to study roles of mitochondrial free radicals in the process of neurodegeneration in vivo.
Kim
Doo Yeon
DY
Center for the Interventional Therapy of Stroke and Alzheimer's Disease, Ajou University School of Medicine, Suwon, Korea.
Won
Seok Joon
SJ
Gwag
Byoung Joo
BJ
D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002545:Brain Ischemia / Q000378:metabolism*; D004195:Disease Models, Animal; D005456:Fluorescent Dyes / Q000494:pharmacology; D005609:Free Radicals; D006801:Humans; D006816:Huntington Disease / Q000378:metabolism; D007150:Immunohistochemistry; D007501:Iron / Q000378:metabolism; D008297:Male; D008928:Mitochondria / Q000378:metabolism*; D019636:Neurodegenerative Diseases / Q000378:metabolism*; D009474:Neurons / Q000378:metabolism; D009574:Nitro Compounds; D009930:Organic Chemicals; D011422:Propionates / Q000378:metabolism; D051381:Rats; D017207:Rats, Sprague-Dawley
D005456:Fluorescent Dyes; D005609:Free Radicals; D009574:Nitro Compounds; D009930:Organic Chemicals; D011422:Propionates; C107472:red dye CMXRos; D000255:Adenosine Triphosphate; D007501:Iron; C015392:3-nitropropionic acid