PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 2157445-5 1990 These and other observations indicated that these alkaloids inhibited the active oxygen generation by way of stabilizing plasma membrane and inhibiting PKC and NADPH oxidase activation. Alkaloids 50-59 Prkca Cavia porcellus 152-155