PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12699903-10 2003 These data suggest that manganese exposure for 2 and 4 h inhibited rat primary Leydig cell steroidogenesis by decreasing StAR protein expression while 24 and 48 h exposure of manganese chloride caused adverse effects on both StAR protein and P450scc and 3beta-HSD enzyme activity to reduce steroidogenesis. Manganese 24-33 hydroxy-delta-5-steroid dehydrogenase, 3 beta- and steroid delta-isomerase 1 Rattus norvegicus 254-263