Abstract:
:Monoamine oxidase (MAO) enzymes are one of the most promising targets for the treatment of neurological disorders. A series of phenylisoxazole carbohydrazides was designed, synthesized and screened for both MAO-A and MAO-B inhibition using Amplex Red assays. None of the compounds inhibited the MAO-A activity while most of them significantly inhibited MAO-B in the micromolar to nanomolar range. Among them, the compound N'-(4-methylbenzylidene)-5-phenylisoxazole-3-carbohydrazide (6c) exhibited the most potent inhibitory activity towards MAO-B. Enzyme kinetic studies revealed the reversible and competitive nature of compound 6c towards MAO-B inhibition. The results of the enzyme inhibition assay were in agreement with molecular docking study, in which compound 6c displayed a strong binding affinity for MAO-B with a docking score of -10.98 Kcal/mol. In order to explore the neuroprotective effect of compound 6c, MPTP-induced mouse model for Parkinson's disease was used, and motor behavioural assessment of experimental animals was carried out. The compound 6c was able to significantly prevent the MPTP-induced neurotoxicity as revealed by improvement in gait behaviour in footprint test and increase in grip strength score in horizontal wire test. Thus, phenylisoxazole carbohydrazides can be promising leads in the development of potent, selective and reversible MAO-B inhibitors for the treatment of Parkinson's disease.
journal_name
Comput Biol Chemjournal_title
Computational biology and chemistryauthors
Agrawal N,Mishra Pdoi
10.1016/j.compbiolchem.2019.01.012subject
Has Abstractpub_date
2019-04-01 00:00:00pages
63-72eissn
1476-9271issn
1476-928Xpii
S1476-9271(18)30857-0journal_volume
79pub_type
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