Browsing by Author "Elhawary, Seham S"

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Green Biosynthesis of Silver Nanoparticles Using Annona glabra and Annona squamosa Extracts with Antimicrobial, Anticancer, Apoptosis Potentials, Assisted by In Silico Modeling, and Metabolic Profiling
(Multidisciplinary Digital Publishing Institute (MDPI), 2022-11) Mokhtar, Fatma A; Selim, Nabil M; Elhawary, Seham S; Abd El Hadi, Soha R; Hetta, Mona H; Albalawi, Marzough A; Shati, Ali A; Alfaifi, Mohammad Y; Elbehairi, Serag Eldin I; Fahmy, Lamiaa I; Ibrahim, Rana M
Annona glabra L. (AngTE) and Annona squamosa L. (AnsTE) fruits have been widely used in cancer treatment. Accordingly, their extracts were used to synthesize silver nanoparticles via a biogenic route (Ang-AgNPs) and (Ans-AgNPs), respectively. Chemical profiling was established using UPLC-QTOF-MS/MS. All species were tested for anticancer activity against human cervical cancer cells (HeLa), prostate adenocarcinoma metastatic (PC3), and ovary adenocarcinoma (SKOV3) using sulphorhodamine B assay. Apoptosis was determined using Annexin flow cytometry along with cell cycle analysis and supported by a molecular docking. The antibacterial and synergistic effect when combined with gentamicin were evaluated. A total of 114 compounds were tentatively identified, mainly acetogenins and ent-kaurane diterpenes. AnsTE and Ans-AgNPs had the most potent cytotoxicity on HeLa and SKOV3 cells, inducing a significant apoptotic effect against all tumor cells. The AnsTE and Ans-AgNPs significantly arrested PC3, SKOV3, and HeLa cells in the S phase. The nanoparticles demonstrated greater antibacterial and antifungal activities, as well as a synergistic effect with gentamicin against P. aeruginosa and E. coli. Finally, a molecular docking was attempted to investigate the binding mode of the identified compounds in Bcl-2 proteins’ receptor, implying that the fruits and their nanoparticles are excellent candidates for treating skin infections in patients with ovarian or prostatic cancer.
The medicinal activity of lyophilized aqueous seed extract of Lepidium sativum L. in an androgenic alopecia model
(Nature Publishing Group, 2023-05) Albalawi, Marzough Aziz; Hafez, Ahmed M; Elhawary, Seham S; Sedky, Nada K; Hassan, Omnia F; Bakeer, Rofanda M; Abd El Hadi, Soha; El‑Desoky, Ahmed H; Mahgoub, Sebaey; Mokhtar, Fatma A
This study evaluated the topical efect of Lepidium sativum lyophilized seed extract (LSLE) towards Sustanon-induced alopecia in male adult Wistar albino rats in vivo, compared to minoxidil topical reference standard drug (MRD). LC–MS/MS together with molecular networking was used to profle the metabolites of LSLE. LSLE treated group revealed signifcant changes in alopecia related biomarkers, perturbation of androgenic markers; decline in testosterone level and elevation in 5α-reductase (5-AR); decline in the cholesterol level. On the other hand, LSLE treated group showed improvement in vascular markers; CTGF, FGF and VEGF. Groups treated topically with minoxidil and LSLE showed signifcant improvement in hair length. LC–MS/MS profle of LSLE tentatively identifed 17 constituents: mainly glucosinolates, favonoid glycosides, alkaloids and phenolic acids. The results point to the potential role of LSLE in the treatment of alopecia through decreasing 5(alpha)- dihydrotestosterone levels. Molecular docking was attempted to evaluate the probable binding mode of identifed compounds to androgen receptor (PDB code: 4K7A).
Metabolomics‑based profling of 4 avocado varieties using HPLC–MS/ MS andGC/MS and evaluation of their antidiabetic activity
(Springer nature, 23/03/2022) Younis, InasY; Khattab, Amira R; Selim, Nabil M; Sobeh, Mansour; Elhawary, Seham S; El Bishbishy, Mahitab H
Seven avocado “Persea americana” seeds belonging to 4 varieties, collected from diferent localities across the world, were profled using HPLC–MS/MS and GC/MS to explore the metabolic makeup variabilities and antidiabetic potential. For the frst time, 51 metabolites were tentatively- identifed via HPLC–MS/MS, belonging to diferent classes including favonoids, bifavonoids, naphthodianthrones, dihydrochalcones, phloroglucinols and phenolic acids while 68 un-saponifed and 26 saponifed compounds were identifed by GC/MS analysis. The primary metabolic variabilities existing among the diferent varieties were revealed via GC/MS-based metabolomics assisted by unsupervised pattern recognition methods. Fatty acid accumulations were proved as competent, and varietal-discriminatory metabolites. The antidiabetic potential of the diferent samples was explored using in-vitro amylase and glucosidase inhibition assays, which pointed out toGwen (KG) as the most potent antidiabetic sample. This could be attributed to its enriched content of poly-unsaturated fatty acids and polyphenolics. Molecular docking was then performed to predict the most promising phytoligands in KG variety to be posed as antidiabetic drug leads. The highest in-silico α-amylase inhibition was observed with chrysoeriol-4′-O-pentoside-7-O-rutinoside, apigenin-7-glucuronide and neoeriocitrin which might serve as potential drug leads for the discovery of new antidiabetic remedies.
Panicum maximum Jacq. mediated green synthesis of silver nanoparticles: synthesis, characterization, and biological activities supported by molecular docking
(Taylor and Francis Ltd, 2024-08) Alhamdi, Heba W; Anazi, Hanan Khalaf; Mokhtar, Fatma Alzahraa; Elhawary, Seham S; Elbehairi, Serag Eldin I; Alfaifi, Mohammad Y; Shati, Ali A; Fahmy, Lamiaa I; Elekhnawy, Engy; Hassan, Afnan; Negm, Walaa A; Fahmy, Sherif Ashraf; Selim, Nabil
This study uses the aerial parts of Panicum maximum total extract (PMTE) to synthesize silver nanoparticles (AgNPs) in an environmentally friendly manner. TEM, SEM, FTIR, X-ray powder diffraction (XRD), Zeta potential, UV, and FTIR were used to characterize the green silver nanoparticles (PM-AgNPs). PM-AgNPs were evaluated as anticancer agents compared to (PMTE) against breast (MCF-7), lung (A549), and ovary adenocarcinoma (SKOV3) human tumour cells. The antibacterial activity of AgNPs was assessed against Staphylococcus aureus isolates. The PM-AgNPs had an absorbance of 418 nm, particle size of 15.18 nm, and zeta potential of −22.4 mV, ensuring the nanosilver’s stability. XRD evaluated the crystallography nature of the formed PM-AgNPs. The cytotoxic properties of PM-AgNPs on MCF-7 and SKOV 3 were the strongest, with IC50s of 0.13 ± 0.015 and 3.5 ± 0.5 g/ml, respectively, as compared to A549 (13 ± 3.2 µg/mL). The increase in the apoptotic cells was 97.79 ± 1.61 and 96.6 ± 1.91% for MCF-7 and SKOV3 cell lines, respectively. PM-AgNPs were found to affect the membrane integrity and membrane permeability of 50 and 43.75% of the tested isolates, respectively. Also, PM-AgNPs have recorded a reduction in the biofilm formation of S. aurues. These results suggest using PM-AgNPs to treat breast and ovarian cancers.