Article Publish Status: FREE
Abstract Title:

Novel Antiviral and Antibacterial Activities of.

Abstract Source:

Antibiotics (Basel). 2020 Oct 30 ;9(11). Epub 2020 Oct 30. PMID: 33142982

Abstract Author(s):

Riham A El-Shiekh, Usama Ramadan Abdelmohsen, Hossam M Ashour, Rehab M Ashour

Article Affiliation:

Riham A El-Shiekh


(Dyer) Hook.f. (Malvaceae) is an ornamental plant. The aim was to investigate its antimicrobial and antioxidant activities. In vitro antiviral, antibacterial, and antioxidant activities of the 70% ethanolic extract (Et-E) of the aerial parts of the plant were determined. The Dichloromethane Fraction (DCM-F) and the-Butanol Fraction (Bu-F) were assessed using Liquid chromatography-mass spectrometry (LC-MS). The DCM-F showed higher antiviral activities against Coxsackie B4 (CoxB4) viruses (IC= 64.13µg/mL) and adenoviruses (IC= 54.88µg/mL) than acyclovir (IC= 72.79µg/mL for CoxB4 viruses; IC= 91.92µg/mL for adenoviruses). The DCM-F showed higher anti-activity (MIC = 3.9µg/mL) than clarithromycin (MIC = 1.95 µg/mL). The DCM-F inhibited Herpes Simplex Virus (HSV) Type I (IC= 29.85µg/mL) and HSV Type II (IC= 74.17µg/mL). The Bu-F showed higher anti-mycobacterial activity (MIC = 7.81 µg/mL) than isoniazid (MIC = 0.24 µg/mL) and higher antibacterial activity against(MRSA)(MIC = 7.81µg/mL) than vancomycin (MIC = 3.9 µg/mL). Antioxidant assays included total antioxidant capacity (TAC), 2,2'-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS), 2,2-diphenyl-1-picryl-hydrazyl (DPPH), and iron reducing power. The Bu-F showed the highest antioxidant activity. Chemical profileswere analyzed using HPLC-HR-ESI-MS to identify the metabolites responsible for these biological activities. We identified more than 60 metabolites that belong to anthocyanins, flavonoids, phenolics, terpenes, sterols, and fatty acids. In conclusion,is endowed with metabolites that could be used against viruses and antibiotic-resistant bacteria. They can also be potent antioxidants.

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