A New Listeria Species From Costa Rica
Listeria costaricensis is the official name given to the new bacterial species described by investigators from the Costa Rican Institute of Technology (TEC) and the WHO-collaborating center on Listeria at Institut Pasteur.
Listeria is a bacterial genus comprising 18 species. Two of them are pathogenic to humans and animals, upon consumption of contaminated food. Listeria monocytogenes, the best characterized pathogenic species, can cause gastroenteritis, septicemia and central nervous system infection, mostly in immunocompromised individuals, as well as fetal and neonatal infection.
While the new species Listeria costaricensis is non-pathogenic, its characterization will nonetheless increase our understanding of the pathogenic potential of Listeria. "The discovery of Listeria costaricensis will allow comparisons with pathogenic Listeria species, in order to better understand the behavior and adaptations of these bacterial pathogens," explained TEC biotechnologist Kattia Núñez.
Listeria costaricensis was isolated from water collected at an industrial drainage area in the Costa Rican province of Alajuela, after three years of sample collection and research. "In Costa Rica, there have been few studies on microbiological diversity. Our recent finding reflects the biodiversity of Costa Rican soils and suggests that this Central American country is a fertile environment for this type of research,” added Javier Pizarro-Cerda, Research Director at the Institut Pasteur, who participated in the study and now heads the Yersinia Research Unit. For Marc Lecuit, head of Biology of Infection Unit at Institut Pasteur and French National Reference Center for Listeria (page in French), this collaboration illustrates the public health and scientific dimensions of the activities of the WHO-collaborating center on Listeria, which assists colleagues from around the world on the characterization of Listeria isolates.
This article has been republished from materials provided by Institut Pasteur. Note: material may have been edited for length and content. For further information, please contact the cited source.
Kattia Núñez-Montero, Alexandre Leclercq, Alexandra Moura, Guillaume Vales, Johnny Peraza, Javier Pizarro-Cerdá, Marc Lecuit. Listeria costaricensis sp. nov.. International Journal of Systematic and Evolutionary Microbiology, 2018; 68 (3): 844 DOI: 10.1099/ijsem.0.002596.
Getting to Know the Microbes that Drive Climate ChangeNews
A new understanding of the microbes and viruses in the thawing permafrost in Sweden may help scientists better predict the pace of climate change.READ MORE
Perinatal Exposure to Phthalates Results in Lower Number of Neurons and Synapses in the Medial Prefrontal CortexNews
Phthalates - chemicals used in plastics belonging to the same class as Bisphenol A (BPA) - can potentially interfere with hormones important for the developing brain.READ MORE
How Many People Die From TB Every Year?News
Discrepancies between the estimates for global tuberculosis deaths is due to different methodologies and data sources used by each institution. The results highlight the need to improve the modeling approaches in these countries in order to understand the true burden of the disease and design adequate health policies.READ MORE