Çelik, I.Kara, M.2025-05-102025-05-1019971093-452910.1080/109345297093766422-s2.0-0345812475https://doi.org/10.1080/10934529709376642https://hdl.handle.net/20.500.14720/6262In this study, the effects of plant growth regulators (PGRs). Indole Acetic Acid (IAA), 2,3,5-Triiodo Benzoik Acid (TIBA) and Kinetin on human serum enzymes, myocardial creatine kinase (CK-MB), amylase, creatine kinase (CK), aspartate amino transferase (AST), serum glutamyl pruvic transferase (SGPT). alkaline phosphatase (ALK-P), δ glutamyl transferase (GGT-P) and lactate dehydrogenase (LDH) were investigated (in vitro). I50 values of chemicals caused inhibition were determined by means of activity percentage - [I] diagrams. The results showed that IAA was an activator rather than an inhibitor. It only inhibited AST activity, but increased activities of CK, CK-MB, amylase, ALK-P and LDH. However, IAA ineffected on SGPT and GGT-P. Both TIBA and Kinetin inhibited CK-MB, but either chemicals ineffected on CK, amylase, ALK-P, GGT-P. On the other hand, TIBA ineffected on SGPT and LDH, while Kinetin increased activity of the same enzymes. In conclusion, it was showed that the studied chemicals weakly inhibited enzymes.eninfo:eu-repo/semantics/closedAccessHumanPlant Growth RegulatorsSerum EnzymesArticle326N/AQ217551761WOS:A1997XF10600010