PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 23432663-8 2013 Patients with PD treated with L-dopa plus catechol-O-methyltransferase inhibitor (COMT-I) showed lower plasma Hcy concentrations compared with L-dopa-treated patients (WMD 4.62; 95% CI 2.89-6.35, P < 0.001). Homocysteine 110-113 catechol-O-methyltransferase Homo sapiens 42-70