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Khan S, Rauf A, Aljohani ASM, Al-Awthan YS, Ahmad Z, Bahattab OS, Khan S, Saadiq M, Khan SA, Thiruvengadam R, Thiruvengadam M. Green synthesis of silver and gold nanoparticles in Callistemon viminalis extracts and their antimicrobial activities. Bioprocess Biosyst Eng 2024:10.1007/s00449-024-02994-6. [PMID: 38512495 DOI: 10.1007/s00449-024-02994-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/06/2024] [Indexed: 03/23/2024]
Abstract
In the current study, the bottlebrush [Callistemon viminalis (Sol. ex Gaertn.) G. Don] plant was selected for the green synthesis of silver (Ag) and gold (Au) nanoparticles and to evaluate its antibacterial and antifungal activities. Phytochemical screening of C. viminalis confirmed the presence of alkaloids, anthraquinones, saponins, tannins, betacyanins, phlobatanins, coumarins, terpenoids, steroids, glycosides, and proteins. To characterize the synthesized Ag and Au NPs, UV-Visible spectroscopy, FTIR spectroscopy for functional group identification, field emission scanning electron microscopy (FE-SEM) for particle size, and elemental analysis were performed using EDX. The UV-Visible absorption spectra of the green-synthesized Ag and Au nanoparticles were found to have a maximum absorption band at 420 nm for Ag NPs and 525 nm for Au NPs. FE-SEM analysis of the synthesized NPs revealed a circular shape with a size of 100 nm. Elemental analysis was performed for the synthesis of Ag and Au NPs, which confirmed the purity of the nanoparticles. The greenly synthesized Ag and Au NPs were also evaluated for their anti-bacterial and anti-fungal activities, which exhibited prominent inhibition activities against Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Candida albicans, C. krusei, Aspergillus sp., and Trichoderma species. The highest zone of inhibition 15.5 ± 0.75 and 15 ± 0.85 mm was observed for Ag NPs against E. coli and P. aeruginosa. Similarly, Trichoderma sp. and Aspergillus sp. were inhibited by Ag NPs up to 13.5 ± 0.95 and 13 ± 0.70 mm. This work will open doors for the development of new antimicrobial agents using green chemistry.
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Affiliation(s)
- Shahid Khan
- Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan.
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Yahya S Al-Awthan
- Department of Biology, Faculty of Science, University of Tabuk, 71491, Tabuk, Saudi Arabia
| | - Zubair Ahmad
- Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan
| | - Omar S Bahattab
- Department of Biology, Faculty of Science, University of Tabuk, 71491, Tabuk, Saudi Arabia
| | - Shehla Khan
- Department, of Biotechnology, University of Swabi, Swabi, Anbar, KPK, Pakistan
| | - Muhammad Saadiq
- Department of Chemistry, Bacha Khan University, Charsadda, KP, Pakistan
| | - Shahid Ali Khan
- Department of Chemistry, University of Swabi, Anbar, Khyber Pakhtunkhwa, 23561, Pakistan
| | - Rekha Thiruvengadam
- Center for Global Health Research, Saveetha Medical College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, 600077, India.
| | - Muthu Thiruvengadam
- Department of Crop Science, College of Sanghuh Life Science, Konkuk University, Seoul, 05029, Republic of Korea
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Abu-Izneid T, Rauf A, Akram Z, Naz S, Wadood A, Muhammad N, Hayat C, Al-Awthan YS, Bahattab OS. Discovery of new α-glucosides, antiglycation agent, and in silico study of 2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-3-methoxy-4H-chromen-4-one isolated from Pistacia chinensis. Heliyon 2024; 10:e27298. [PMID: 38495136 PMCID: PMC10943337 DOI: 10.1016/j.heliyon.2024.e27298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 03/19/2024] Open
Abstract
Pistacia chinensis is locally practiced for treating diabetes, pain, inflammation, and erectile dysfunction. Therefore, the current studies subjected the crude extract/fractions and the isolated compound (2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-3-methoxy-4H-chromen-4-one) to α-glucosidase inhibitor and anti-glycation activities. The development of long-term complications associated with diabetes is primarily caused by chronic hyperglycemia. Regarding α-glucosidase, the most significant inhibitory effect was observed with compound 1 (93.09%), followed by the methanolic extract (80.87%) with IC50 values of 45.86 and 86.32 μM. The maximum anti-glycation potential was shown by an isolated compound 1 followed by methanolic extract with effect inhibition of 90.12 and 72.09, respectively. Compound 1 is expected to have the highest gastrointestinal absorption rate, with a predicted absorption rate of 86.156%. This indicates oral suitability. The compound 1 is expected to have no harmful effects on the liver. In addition, our docking results suggest that alpha-glucosidase and isolated compounds showed strong interaction with ILE821, GLN900, and ALA901 residues, along with a -11.95 docking score.
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Affiliation(s)
- Tareq Abu-Izneid
- Pharmaceutical Sciences Program, College of Pharmacy, Al Ain University, Al Ain, 64141, United Arab Emirates
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Swabi, Anbar, Khyber Pakhtunkhwa, Pakistan
| | - Zuneera Akram
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Baqai Medical University, Karachi, Pakistan
| | - Saima Naz
- Institute of Biotechnology & Microbiology, Bacha Khan University Charsadda, Charsadda, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan University Mardan KPK, Pakistan
| | - Naveed Muhammad
- Department of Pharmacy, Abdul Wali Khan, University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Chandni Hayat
- Department of Biochemistry, Abdul Wali Khan University Mardan KPK, Pakistan
| | - Yahya S. Al-Awthan
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia
| | - Omar S. Bahattab
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk, 71491, Saudi Arabia
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Abu-Izneid T, Rauf A, Ahmad Z, Wadood A, Ayub K, Muhammad N, Al-Awthan YS, Maqbool M, Bahattab OS, Hemeg HA, Naz S, Formanowicz D. Density functional theory (DFT), molecular docking, and xanthine oxidase inhibitory studies of dinaphthodiospyrol S from Diospyros kaki L. Saudi Pharm J 2024; 32:101936. [PMID: 38261938 PMCID: PMC10797153 DOI: 10.1016/j.jsps.2023.101936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 12/25/2023] [Indexed: 01/25/2024] Open
Abstract
In this work, we investigated Diospyros kaki extract and an isolated compound for their potential as xanthine oxidase (XO) inhibitors, a target enzyme involved in inflammatory disorders. The prepared extract was subjected to column chromatography, and dinaphthodiospyrol S was isolated. Then XO inhibitory properties were assessed using a spectrophotometry microplate reader. DMSO was taken as a negative control, and allopurinol was used as a standard drug. The molecular docking study of the isolated compound to the XO active site was performed, followed by visualization and protein-ligand interaction. The defatted chloroform extract showed the highest inhibitory effect, followed by the chloroform extract and the isolated compound. The isolated compound exhibited significant inhibitory activity against XO with an IC50 value of 1.09 µM. Molecular docking studies showed that the compound strongly interacts with XO, forming hydrogen bond interactions with Arg149 and Cys113 and H-pi interactions with Cys116 and Leu147. The binding score of -7.678 kcal/mol further supported the potential of the isolated compound as an XO inhibitor. The quantum chemical procedures were used to study the electronic behavior of dinaphthodiospyrol S isolated from D. kaki. Frontier molecular orbital (FMO) analysis was performed to understand the distribution of electronic density, highest occupied molecular orbital HOMO, lowest unoccupied molecular orbital LUMO, and energy gaps. The values of HOMO, LUMO, and energy gap were found to be -6.39, -3.51 and 2.88 eV respectively. The FMO results indicated the intramolecular charge transfer. Moreover, reactivity descriptors were also determined to confirm the stability of the compound. The molecular electrostatic potential (MEP) investigation was done to analyze the electrophilic and nucleophilic sites within a molecule. The oxygen atoms in the compound exhibited negative potential, indicating that they are favorable sites for electrophilic attacks. The results indicate its potential as a therapeutic agent for related disorders. Further studies are needed to investigate this compound's in vivo efficacy and safety as a potential drug candidate.
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Affiliation(s)
- Tareq Abu-Izneid
- Pharmaceutical Sciences Department, College of Pharmacy, Al Ain University, Al Ain 64141, United Arab Emirates
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Ambar 23561, Khyber Pakhtunkhwa, Pakistan
| | - Zubair Ahmad
- Department of Chemistry, University of Swabi, Ambar 23561, Khyber Pakhtunkhwa, Pakistan
| | - Abdul Wadood
- Department of Biochemistry, Abdul Wali Khan, University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Khurshid Ayub
- Department of Chemistry, COMSATS University Islamabad, Islamabad, Pakistan
| | - Naveed Muhammad
- Department of Pharmacy, Abdul Wali Khan, University Mardan, Khyber Pakhtunkhwa, Pakistan
| | - Yahya S. Al-Awthan
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
- Department of Biology, Faculty of Science, Ibb University, Ibb 70270, Yemen
| | - Maria Maqbool
- Department of Chemistry, COMSATS University Islamabad, Islamabad, Pakistan
| | - Omar S. Bahattab
- Department of Biology, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Hassan A. Hemeg
- Department of Medical Laboratory Technology, College of Applied Medical Sciences, Taibah University, P.O. Box 344, Al-Madinah Al-Monawra 41411, Saudi Arabia
| | - Saima Naz
- Institute of Biotechnology & Microbiology, Bacha Khan University Charsadda, Khyber Pakhtunkhwa (K.P.), Pakistan
| | - Dorota Formanowicz
- Chair and Department of Medical Chemistry and Laboratory Medicine, Poznan University of Medical Sciences, Rokietnicka 8, 60-806 Poznan, Poland
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