According to a recent WHO press release, a lack of innovation in the development of new antibiotics, allied with declining private investment, is undermining efforts to combat drug-resistant infections. The breaking news from China of a sharp rise in diagnoses of an emergent strain of coronavirus, and new reported cases in Japan and Thailand, has raised fears of another outbreak similar to SARS in 2003, which infected more than 8,000 people and killed more than 700.
WHO has raised concerns about a weak pipeline for antibiotic agents, with 60 products in development (50 antibiotics and 10 biologics) that it deems bring little benefit over existing treatments and very few that target the most critical resistant bacteria (Gram-negative bacteria). However, some positive news came from an unlikely quarter over the weekend – an as yet unpublished study that found that CBG (cannabigerol) cured mice of MRSA infections as effectively as vancomycin, a drug widely considered to be the last line of defence against drug-resistant microbes.
One of our recent blogs looked at the potential of a new emerging class of cannabinoids beyond CBD – including CBG, CBN (cannabinol) and CBC (cannabichromene) – and this new study boosts the attractiveness of the cannabinoid industry even further. Eric Brown, the microbiologist who led the research at McMaster University said cannabinoids were “clearly great drug-like compounds”, but noted it was early days in assessing the compounds for use in the clinic.
Brown found that CBG and other cannabinoids did not work well against gram negative multi-drug resistant bugs. However, the study shows that when CBG is used along with small quantities of polymyxin B, an existing antibiotic that targets “the cytoplasmic membrane of Gram-positive bacteria”, the cannabis compound wiped out the drug-resistant pathogens. “We are now pursuing the required paperwork to work with a wide variety of cannabinoids,” Brown said.
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