Benzyl isothiocyanate as an alternative to antibiotics? a comparative in vivo study using Pseudomonas aeruginosa infection as a model

PLoS One. 2024 May 16;19(5):e0303490. doi: 10.1371/journal.pone.0303490. eCollection 2024.

Abstract

Due to over-prescription of antibiotics, antimicrobial resistance has emerged to be a critical concern globally. Many countries have tightened the control of antibiotic usage, which, in turn, promotes the search for alternatives to antibiotics. Quite a few phytochemicals have been investigated. Benzyl isothiocyanate (BITC) is an important secondary metabolite in cruciferous species and exhibited potent antimicrobial activity under in vitro conditions. In this research, we undertook a comparative mouse model study of BITC with gentamycin sulfate (positive antibiotic control) and ceftiofur hydrochloride (negative antibiotic control) against Pseudomonas aeruginosa infection. Our results showed that BITC exhibited comparable or better antimicrobial activity and lower infiltration of mouse immune cells upon comparing to gentamycin sulfate. Furthermore, BITC did not impose any toxicity to the air pouch skin tissues. In summary, our current study suggests that BITC could be an alternative to antibiotics and deserves further in vivo and clinical trial studies.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Anti-Bacterial Agents* / pharmacology
  • Anti-Bacterial Agents* / therapeutic use
  • Disease Models, Animal
  • Female
  • Isothiocyanates* / pharmacology
  • Mice
  • Microbial Sensitivity Tests
  • Pseudomonas Infections* / drug therapy
  • Pseudomonas Infections* / microbiology
  • Pseudomonas aeruginosa* / drug effects

Substances

  • benzyl isothiocyanate

Grants and funding

MKS and JY received funding. Grant NUMBER: 422905. ADF: Agriculture Development FUND. wEB SITE: https://www.saskatchewan.ca/business/agriculture-natural-resources-and-industry/agribusiness-farmers-and-ranchers/sustainable-canadian-agricultural-partnership/programs-for-research/agriculture-development-fund The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.