Use of Vitex doniana (black plum) and Abutilon hirtum (Florida keys) extracts as an integral part of phytomedicine in tackling multidrug-resistant Salmonella

Noel, Dawang, Wain, John and Lar, Patricia (2022) Use of Vitex doniana (black plum) and Abutilon hirtum (Florida keys) extracts as an integral part of phytomedicine in tackling multidrug-resistant Salmonella. Journal of Infection in Developing Countries, 16 (08). pp. 1323-1328. ISSN 2036-6590

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Introduction: The high prevalence and global spread of antibiotic resistance is driving the search for new antibacterial agents. Screening small molecules against specific bacterial targets has not yielded new compounds therefore functional assays and phenotypic screens are now being used. In Nigeria, drug resistance towards Salmonella is a major public health concern. Methodology: Nine fully characterized clinical Salmonella isolates, from the Department of Medical Microbiology, Jos University Teaching Hospital, Plateau State, Nigeria, were screened by broth microdilution for susceptibility to fractionated ethanol extracts of Vitex doniana and Abutilon hirtum. This was compared to the control organism ATCC25922 and a range antibiotics: CH (chloramphenicol), SP (sparfloxacin), AM (amoxicillin), CN (gentamicin), S (streptomycin), PEF (pefloxacin). Results: The most common resistance profile was AM,CN,S with most isolates susceptible to fluoroquinolones. Activity was detected from both plant extracts with MICs of extracted fractions ranging from 150 - 300 µg/mL. Interestingly both plants produced extracts with bactericidal activity from 300 - 600 µg/mL. V. doniana exhibited better activity against the resistant Salmonella strains in terms of greater inhibition zones, but A. hirtum extracts were more consistently active against all isolates. In comparison with the synthetic drugs, both plant extracts exhibited activity against more isolates – this activity was bactericidal. Conclusions: Nigeria needs better anti-salmonella products and these results represent a starting point for antibiotic drug discovery.

Item Type: Article
Additional Information: Funding Information: The authors gratefully acknowledge the support of the Biotechnology and Biological Sciences Research Council (BBSRC); JW was funded, during writing, by the BBSRC Institute Strategic Programme Microbes in the Food Chain BB/R012504/1 and its constituent project BBS/E/F/000PR10349 (Theme 2, Microbial Survival in the Food Chain). ND and LP by the Tertiary Education Trust Fund, Nigeria.
Uncontrolled Keywords: antibacterial activity,medicinal plants.,multi-drug resistant salmonellae,infectious diseases,virology,parasitology,microbiology,sdg 3 - good health and well-being ,/dk/atira/pure/subjectarea/asjc/2700/2725
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
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Depositing User: LivePure Connector
Date Deposited: 24 Oct 2022 16:36
Last Modified: 15 Dec 2022 03:41
DOI: 10.3855/jidc.14216


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