期刊
ANNALS OF CLINICAL MICROBIOLOGY AND ANTIMICROBIALS
卷 20, 期 1, 页码 -出版社
BMC
DOI: 10.1186/s12941-021-00485-0
关键词
Phytochemicals; Antibiotic-potentiating; Growth inhibitory indices; Fractional inhibitory concentration index; Superbug bacteria; Anthrax; Bacillus anthracis; Antibiotic resistance
类别
This review paper discusses the antibiotic resistance mechanisms of bacteria and the antibiotic-potentiating ability of plant-derived natural compounds. Studies have shown that these compounds can significantly reduce the minimum inhibitory concentration of standard antibiotics and exhibit synergistic effects in combination with antibiotics.
Background and objectives The chemotherapeutic management of infections has become challenging due to the global emergence of antibiotic resistant pathogenic bacteria. The recent expansion of studies on plant-derived natural products has lead to the discovery of a plethora of phytochemicals with the potential to combat bacterial drug resistance via various mechanisms of action. This review paper summarizes the primary antibiotic resistance mechanisms of bacteria and also discusses the antibiotic-potentiating ability of phytoextracts and various classes of isolated phytochemicals in reversing antibiotic resistance in anthrax agent Bacillus anthracis and emerging superbug bacteria. Methods Growth inhibitory indices and fractional inhibitory concentration index were applied to evaluate the in vitro synergistic activity of phytoextract-antibiotic combinations in general. Findings A number of studies have indicated that plant-derived natural compounds are capable of significantly reducing the minimum inhibitory concentration of standard antibiotics by altering drug-resistance mechanisms of B. anthracis and other superbug infection causing bacteria. Phytochemical compounds allicin, oleanolic acid, epigallocatechin gallate and curcumin and Jatropha curcas extracts were exceptional synergistic potentiators of various standard antibiotics. Conclusion Considering these facts, phytochemicals represents a valuable and novel source of bioactive compounds with potent antibiotic synergism to modulate bacterial drug-resistance.
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