El-Shazly M

References (2)

Title : Evaluation of In Vitro and In Silico Anti-Alzheimer Potential of Nonpolar Extracts and Essential Oil from Mentha piperita - Srief_2023_Foods_12_
Author(s) : Srief M , Bani M , Mokrani EH , Mennai I , Hamdi M , Boumechhour A , Abou Mustapha M , Derdour M , Kerkatou M , El-Shazly M , Bensouici C , Nieto G , Akkal S
Ref : Foods , 12 : , 2023
Abstract : The anticholinesterase and antioxidant activities with chemical composition and molecular docking of essential oil and nonpolar extracts of Mentha piperita were evaluated using enzymatic and chemical methods. Molecular docking tools were used to explain the interaction of the major chemical constituents with the enzymes. GC/MS analyses revealed that the main compounds in M. piperita essential oil were l-menthone (43.601%) followed by pulegone (21.610%), linolenic acid (25.628%), and l-menthone (10.957%), representing the major compounds of the petroleum ether extract. Imidazoquinoline (7.767%) and 17-N-acetyl-oroidine (5.363%) were the major constituents of the chloroform extract. Linolenic acid (19.397%) and l-menthone (6.336%) were the most abundant compounds in the hexane extract. The M. piperita essential oil and nonpolar extracts showed moderate antioxidant activity. The essential oil showed the most promising anticholinesterase activity with IC(50) = 10.66 +/- 0.12 microg/mL and IC(50) = 16.33 +/- 0.03 microg/mL against acetylcholinesterase (AChE) and butyrylcholinesterase (BChE), respectively, close to galantamine in AChE and more active in BChE, followed by the interesting activity in the petroleum ether extract with IC(50) = 23.42 +/- 3.06 microg/mL in AChE and IC(50) = 62.00 +/- 3.22 microg/mL in BChE. The docking experiments showed that among the seven major identified compounds, N-acetyl-17-oroidine showed the highest binding score (63.01 in AChE and 63.68 in BChE). This compound was found to bind the catalytic and peripheral sites, resulting in more potent inhibitory activity than galantamine, which only binds to the catalytic site. These findings suggested the possible use of M. piperita essential oil and nonpolar extracts as a potential source of alternative natural anti-Alzheimer compounds.
ESTHER : Srief_2023_Foods_12_
PubMedSearch : Srief_2023_Foods_12_
PubMedID: 36613406

Title : Anti-Alzheimer's Studies on beta-Sitosterol Isolated from Polygonum hydropiper L - Ayaz_2017_Front.Pharmacol_8_697
Author(s) : Ayaz M , Junaid M , Ullah F , Subhan F , Sadiq A , Ali G , Ovais M , Shahid M , Ahmad A , Wadood A , El-Shazly M , Ahmad N , Ahmad S
Ref : Front Pharmacol , 8 :697 , 2017
Abstract : The family Polygonaceae is known for its traditional use in the management of various neurological disorders including Alzheimer's disease (AD). In search of new anti-AD drugs, beta-sitosterol isolated from Polygonum hydropiper was subjected to in vitro, in vivo, behavioral and molecular docking studies to confirm its possibility as a potential anti-Alzheimer's agent. The in vitro AChE, BChE inhibitory potentials of beta-sitosterol were investigated following Ellman's assay. The antioxidant activity was tested using DPPH, ABTS and H2O2 assays. Behavioral studies were performed on a sub-strain of transgenic mice using shallow water maze (SWM), Y-maze and balance beam tests. beta-sitosterol was tested for in vivo inhibitory potentials against cholinesterase's and free radicals in the frontal cortex (FC) and hippocampus (HC). The molecular docking study was performed to predict the binding mode of beta-sitosterol in the active sites of AChE and BChE as inhibitor. Considerable in vitro and in vivo cholinesterase inhibitory effects were observed in the beta-sitosterol treated groups. beta-sitosterol exhibited an IC50 value of 55 and 50 mug/ml against AChE and BChE respectively. Whereas, the activity of these enzymes were significantly low in FC and HC homogenates of transgenic animals. Molecular docking studies also support the binding of beta-sitosterol with the target enzyme and further support the in vitro and in vivo results. In the antioxidant assays, the IC50 values were observed as 140, 120, and 280 mug/ml in the DPPH, ABTS and H2O2 assays respectively. The free radicals load in the brain tissues was significantly declined in the beta-sitosterol treated animals as compared to the transgenic-saline treated groups. In the memory assessment and coordination tasks including SWM, Y-maze and balance beam tests, beta-sitosterol treated transgenic animals showed gradual improvement in working memory, spontaneous alternation behavior and motor coordination. These results conclude that beta-sitosterol is a potential compound for the management of memory deficit disorders like AD.
ESTHER : Ayaz_2017_Front.Pharmacol_8_697
PubMedSearch : Ayaz_2017_Front.Pharmacol_8_697
PubMedID: 29056913