Membrane damaging potential of photosensitized riboflavin.
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1991-09-01
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Abstract
Riboflavin upon exposure to UV and visible radiations has been shown to produce active oxygen species. The present work deals with erythrocyte membrane as model system to study the damaging potential of photosensitized riboflavin. Membrane preparations (2.5 mg protein/ml) following exposure to sunlight in presence of riboflavin for different time intervals revealed significant inhibition of ATPases, p-nitrophenyl phosphatase and acetylcholinesterase. Considerable increase in lipid peroxidation was caused by the photosensitized riboflavin. Quenching studies using specific scavengers indicated remarkable inhibition. The production and identification of reactive oxygen species by photosensitized riboflavin and their possible involvement in membrane damaging effect has been discussed.
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Ali N, Upreti RK, Srivastava LP, Misra RB, Joshi PC, Kidwai AM. Membrane damaging potential of photosensitized riboflavin. Indian Journal of Experimental Biology. 1991 Sep; 29(9): 818-22