Which enzyme is inhibited by caffeine?: (A) Monoamine oxidase, (B) Alcohol dehydrogenase, (C) Phosphodiesterase, (D) Cytochromo P 450
Answer is C. Aminophyllines(theophylline, caffeine) inhibits the release of ca from sarcoplasmic reticulum and inhibition of phosphodiesterase3/4 causes increased CAMP and bronchodilation ESSENTIALS OF MEDICAL PHARMACOLOGY SEVENTH EDITION KD TRIPATHI PG NO .225,227