PUBLICATION
Rifaximin potentiates clarithromycin against Mycobacterium abscessus in vitro and in zebrafish
- Authors
- Goh, B.C., Larsson, S., Dam, L.C., Ling, Y.H.S., Chua, W.L.P., Abirami, R., Singh, S., Ong, J.L.E., Teo, J.W.P., Ho, P., Ingham, P.W., Pethe, K., Dedon, P.C.
- ID
- ZDB-PUB-230512-42
- Date
- 2023
- Source
- JAC-antimicrobial resistance 5: dlad052dlad052 (Journal)
- Registered Authors
- Ingham, Philip
- Keywords
- none
- MeSH Terms
- none
- PubMed
- 37168836 Full text @ JAC Antimicrob Resist
Citation
Goh, B.C., Larsson, S., Dam, L.C., Ling, Y.H.S., Chua, W.L.P., Abirami, R., Singh, S., Ong, J.L.E., Teo, J.W.P., Ho, P., Ingham, P.W., Pethe, K., Dedon, P.C. (2023) Rifaximin potentiates clarithromycin against Mycobacterium abscessus in vitro and in zebrafish. JAC-antimicrobial resistance. 5:dlad052dlad052.
Abstract
Background Mycobacterium abscessus is a non-tuberculous mycobacterium (NTM) that causes chronic pulmonary infections. Because of its extensive innate resistance to numerous antibiotics, treatment options are limited, often resulting in poor clinical outcomes. Current treatment regimens usually involve a combination of antibiotics, with clarithromycin being the cornerstone of NTM treatments.
Objectives To identify drug candidates that exhibit synergistic activity with clarithromycin against M. abscessus.
Methods We performed cell-based phenotypic screening of a compound library against M. abscessus induced to become resistant to clarithromycin. Furthermore, we evaluated the toxicity and efficacy of the top compound in a zebrafish embryo infection model.
Results The screen revealed rifaximin as a clarithromycin potentiator. The combination of rifaximin and clarithromycin was synergistic and bactericidal in vitro and potent in the zebrafish model.
Conclusions The data indicate that the rifaximin/clarithromycin combination is promising to effectively treat pulmonary NTM infections.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping