Selective in vitro and in silico butyrylcholinesterase inhibitory activity of diterpenes and rosmarinic acid isolated from Perovskia atriplicifolia Benth. and Salvia glutinosa L.

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Phytochemistry, ISSN: 1873-3700, Vol: 133, Page: 33-44

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Senol, F Sezer; Ślusarczyk, Sylwester; Matkowski, Adam; Pérez-Garrido, Alfonso; Girón-Rodríguez, Francisco; Cerón-Carrasco, José P; den-Haan, Helena; Peña-García, Jorge; Pérez-Sánchez, Horacio; Domaradzki, Krzysztof; Orhan, Ilkay Erdogan Show More Hide
Elsevier BV
Biochemistry, Genetics and Molecular Biology; Agricultural and Biological Sciences
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article description
Cholinesterase inhibition is one of the most treatment strategies against Alzheimer's disease (AD) where metal accumulation is also strongly associated with pathology of the disease. In the current study, we assessed inhibitory effect against acetyl- (AChE) and butyrylcholinesterase (BChE) and metal-chelating capacity of twelve diterpenes: arucadiol, miltirone, tanshinone IIa, 1-oxomiltirone, cryptotanshinone, 1,2-didehydromiltirone, 1,2-didehydrotanshinone IIa, 1β-hydroxycryptotanshinone, 15,16-dihydrotanshinone, tanshinone I, isotanshinone II, 1(S)-hydroxytanshinone IIa, and rosmarinic acid, isolated from Perovskia atriplicifolia and Salvia glutinosa. The compounds were tested at 10 μg/mL using ELISA microtiter assays against AChE and BChE. QSAR and molecular docking studies have been also performed on the active compounds. All of the compounds showed higher [e.g., IC = 1.12 ± 0.07 μg/mL for 1,2-didehydromiltirone, IC = 1.15 ± 0.07 μg/mL for cryptotanshinone, IC = 1.20 ± 0.03 μg/mL for arucadiol, etc.)] or closer [1,2-didehydrotanshinone IIa (IC = 5.98 ± 0.49 μg/mL) and 1(S)-hydroxytanshinone IIa (IC = 5.71 ± 0.27 μg/mL)] inhibition against BChE as compared to that of galanthamine (IC = 12.56 ± 0.37 μg/mL), whereas only 15,16-dihydrotanshinone moderately inhibited AChE (65.17 ± 1.39%). 1,2-Didehydrotanshinone IIa (48.94 ± 0.26%) and 1(S)-hydroxytanshinone IIa (47.18 ± 5.10%) possessed the highest metal-chelation capacity. The present study affords an evidence for the fact that selective BChE inhibitors should be further investigated as promising candidate molecules for AD therapy.