PMID-sentid	Pub_year	Sent_text		comp_official_name	comp_offsetprotein_name	organism	prot_offset
1691363-2	1990	The proarrhythmic action of isoproterenol was primarily the result of a beta 1-receptor-mediated tachycardia rather than via a free radical-mediated process, since it was prevented competitively by the beta 1-receptor antagonist metoprolol, but not by the free radical scavengers mannitol, superoxide dismutase, and catalase.	Isoproterenol	28-41	catalase	Rattus norvegicus	316-324