Inhibitory effect of FO-1561 (S-adenosyl-L-methionine sulfate tosylate) on phospholipase A2.
The mechanism of the protective effect of FO-1561 (S-adenosyl-L-methionine sulfate tosylate) on mitochondria was investigated using rat heart muscle. FO-1561 stimulated CO2 production from palmitic acid in the mitochondria, indicating an increase in energy production. FO-1561 inhibited mitochondrial swelling induced by Ca2+ added exogenously or by addition of snake venom phospholipase A2. Moreover, FO-1561 inhibited phospholipase A2 activity directly. These results suggested that FO-1561 blocked mitochondrial swelling by inhibiting endogenous phospholipase A2 activity and so preventing decrease in palmitic acid oxidation.
Second Department of Internal Medicine, School of Medicine, Chiba University.
Y
Y
Ishikawa
T
T
Kanzaki
N
N
Morisaki
Y
Y
Saito
S
S
Yoshida
D000818:Animals; D008297:Male; D008930:Mitochondria, Liver / Q000187:drug effects / Q000378:metabolism*; D008933:Mitochondrial Swelling / Q000187:drug effects*; D010084:Oxidation-Reduction; D019308:Palmitic Acid; D010169:Palmitic Acids / Q000096:biosynthesis*; D010740:Phospholipases / Q000037:antagonists & inhibitors*; D010741:Phospholipases A / Q000037:antagonists & inhibitors*; D054467:Phospholipases A2; D051381:Rats; D011919:Rats, Inbred Strains; D012436:S-Adenosylmethionine / Q000494:pharmacology*
D010169:Palmitic Acids; D019308:Palmitic Acid; D012436:S-Adenosylmethionine; D010740:Phospholipases; D010741:Phospholipases A; D054467:Phospholipases A2