Possible treatment versus antibiotic-resistant germs triggering gonorrhea and meningitis


IMAGE: INRS Professors Frédéric Veyrier, expert in bacteriology, and Annie Castonguay, expert in bioorganometallic chemistry, with the Ph.D trainee Eve Bernet, very first author of the research study.
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Credit: INRS

A group from the Institut national de la recherche scientifique (INRS) has actually shown the efficiency of a low-cost particle to eliminate antibiotic-resistant stress of the germs accountable for gonorrhea and meningococcal meningitis. These 2 infections impact countless individuals worldwide. The results of this research study, led by Teacher Frédéric Veyrier and Teacher Annie Castonguay, have actually simply been released online in the Antimicrobial Representatives and Chemotherapy journal.

Antibiotic Resistance

Over the last few years, increasing rates of antibiotic resistance have actually been of issue to the World Health Company (WHO), who has actually commemorated the World Antimicrobial Awareness Week, from November 18th to 24th 2020. This issue is especially real when it comes to Neisseria gonorrhoeae, for which some stress have actually established resistance to all efficient prescription antibiotics. This germs is accountable for gonorrhea, an infection whose occurrence has actually practically tripled in the last years in Canada. Resistant stress of Neisseria meningitidis, which trigger bacterial meningitis, have actually likewise emerged. In the existing pandemic context, researchers are especially worried about an increase in antibiotic resistance due to their increased usage.

Unlike other germs, Neisseria that trigger meningitis and gonorrhea develop really quickly due to the fact that of particular intrinsic homes. For instance, they have an excellent capability to obtain genes from other germs. They likewise have a suboptimal DNA repair work system that causes anomalies; antibiotic resistance can for that reason quickly emerge. The truth that these illness impact many individuals around the globe likewise provides numerous chances to develop, discussing why it is immediate to establish brand-new methods to eliminate these germs.

A Particular Particle

The research study group has actually shown the effectiveness of an easy particle in bacterial cultures and in a design of infection. Popular by chemists, this particle is available, low-cost, and might considerably assist in the battle versus these 2 kinds of pathogenic Neisseria. The benefit of this particle is its uniqueness: “We discovered that the particle just impacts pathogenic Neisseria. It does not impact other kinds of Neisseria that are discovered in the upper breathing system and can be useful,” highlights Teacher Frédéric Veyrier, likewise the clinical supervisor of the Platform for Characterization of Biological and Synthetic Nanovehicles.

Throughout its experiments, the research study group evaluated whether there was any possible resistance to the particle: “We had the ability to separate stress of germs that were less conscious the treatment, however this resistance was a double-edged sword due to the fact that these mutants totally lost their virulence” states the microbiologist.

For the minute, the group does not understand precisely why the particle responds particularly with the 2 kinds of Neisseria, however they presume a connection with the membrane of these pathogens. This uniqueness unlocks to more basic research study to identify what makes one germs virulent compared to others.

The next action will be to customize the structure of the particle to make it more effective, while preserving its uniqueness. In parallel, the group wants to recognize a commercial partner to assess the possibility of establishing a possible treatment.


About the research study .(* )The short article, entitled “Salt tetraphenylborate display screens selective bactericidal activity versus N. meningitidis and N. gonorrhoeae and works at decreasing bacterial infection load”, by Eve Bernet, Marthe Lebughe, Antony Vincent, Mohammad Mehdi Haghdoost, Golara Golbaghi, Steven Laplante, Annie Castonguay and Frédéric Veyrier, was released online in the journal

Antimicrobial Representatives and Chemotherapy The research study was moneyed by the Canadian Institutes of Health Research Study (CIHR), the Natural Sciences and Engineering Research Study Council of Canada (NSERC), the Fonds de recherche du Québec-Santé, the Réseau québécois de recherche sur les médicaments (RQRM) and the Canadian Francophonie Scholarship Program (CFSP). About INRS

. INRS is a university devoted solely to finish level research study and training. Given that its development in 1969, INRS has actually played an active function in Quebec’s financial, social, and cultural advancement and is ranked initially for research study strength in Quebec and 2nd in Canada. INRS is comprised of 4 interdisciplinary research study and training centres in Quebec City, Montreal, Laval, and Varennes, with know-how in tactical sectors: Eau Terre Environnement, Énergie Matériaux Télécommunications, Urbanisation Culture Société, and Armand-Frappier Santé Biotechnologie. The INRS neighborhood consists of more than 1,400 trainees, postdoctoral fellows, professor, and personnel. .


.(* )Audrey-Maude Vézina .
Service des interactions de l’INRS .(* )418 254-2156 .


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