Results 31 to 40 of about 4,136 (177)

A Single‐Nucleotide Substitution Generates a de Novo Promoter That Activates a Latent Metabolic Bypass in Escherichia coli

Molecular Microbiology, EarlyView.
A chromosomal mutation allows bypass of deletion of the Escherichia coli fabH gene. The bypass results from creation of a new promoter that drives increased madA transcription, resulting in increased synthesis of acetyl‐acyl carrier protein by decarboxylation of malonyl‐acyl carrier protein.
Qiaoqiao Guo, Qi Zou, Jilong Qin, Makrina Totsika, Yaoqin Hong, John E. Cronan   +5 more
wiley   +1 more source

Trasmisión de Toxoplasma gondii en Costa Rica: Un concepto actualizado

Acta Médica Costarricense, 2001
Los hallazgos más recientes en cuanto a la trasmisión del Toxoplasma gondii en Costa Rica nos indican que la ingestión de carne poco cocida, así como de algunos embutidos, en donde se ha encontrado el parásito en forma viable, son mecanismos de infección
Liliana Reyes-Lizano, Misael Chinchilla-Carmona, Olga M. Guerrero-Bermúdez, María Laura Arias-Echandi, Alfredo Castro-Castillo   +4 more
doaj  

Mapping the global distribution of Strongyloides stercoralis and hookworms by ecological niche modeling

Parasites & Vectors, 2022
Background The WHO has established a control strategy for Strongyloides stercoralis in school-aged children as well as targets and to maintain control programs for Ascaris lumbricoides , Trichuris trichiura and hookworms.
Pedro Emanuel Fleitas, Sebastián Dario Kehl, Walter Lopez, Marina Travacio, Elvia Nieves, José Fernando Gil, Rubén Oscar Cimino, Alejandro Javier Krolewiecki   +7 more
doaj   +1 more source

Eco‐Epidemiological Study of Seropositivity Against Rickettsia and Leptospira Agents in Rural Areas of Urabá, Colombia

Tropical Medicine &International Health, EarlyView.
ABSTRACT Introduction Rickettsioses and leptospirosis are infectious diseases often underdiagnosed due to limited knowledge about their epidemiology, pathophysiology, and clinical aspects. Objectives To characterize the seroprevalence and seroincidence of Rickettsia and Leptospira agents and determine their associated factors in rural areas of Urabá ...
Mariana Torres‐Bustamante, Omar Cantillo‐Barraza, Albert I. Ko, Elsio A. Wunder Jr, Juan C. Quintero‐Vélez   +4 more
wiley   +1 more source

Salud laboral versus enfermedades tropicales e importadas [PDF]

Medicina y Seguridad del Trabajo, 2009
El objetivo de este artículo es propiciar una reflexión -focalizada en los profesionales de la salud laboral- sobre el incremento en nuestro medio de la patología tropical, entre las que se incluye aquellas enfermedades que dejaron de ser endémicas en nuestro entorno y/o que nunca estuvieron presentes y que en la actualidad sin embargo, pueden verse ...
openaire   +4 more sources

A multiplex assay to detect mosquito species, bloodmeal host source and Plasmodium in malaria vectors using Nanopore amplicon sequencing

Medical and Veterinary Entomology, Volume 40, Issue 3, Page 465-477, September 2026.
Insectary‐reared mosquitoes were simultaneously assessed for species identification, bloodmeal source analysis and Plasmodium detection, using a single multiplexed sequencing run on the MinION sequencing platform. The method was applied to 150 insectary‐reared mosquitoes, representing nine species blood‐fed with five vertebrate hosts and 40 samples for
E. Abby Rogers, Dieunel Derilus, Christopher Sandi, Lisa Reimer, Audrey Lenhart, Lucy Mackenzie Impoinvil   +5 more
wiley   +1 more source

Identification of human intestinal parasites affecting an asymptomatic peri-urban Argentinian population using multi-parallel quantitative real-time polymerase chain reaction

Parasites & Vectors, 2015
Background In resource-limited countries, stool microscopy is the diagnostic test of choice for intestinal parasites (soil-transmitted helminths and/or intestinal protozoa). However, sensitivity and specificity is low.
Rubén O. Cimino, Rebecca Jeun, Marisa Juarez, Pamela S. Cajal, Paola Vargas, Adriana Echazú, Patricia E. Bryan, Julio Nasser, Alejandro Krolewiecki, Rojelio Mejia   +9 more
doaj   +1 more source

The extension of the taxon cycle model to island plants: insights from the Canarian vascular flora

Biological Reviews, Volume 101, Issue 4, Page 2053-2076, August 2026.
ABSTRACT Taxon cycle models describe eco‐evolutionary patterns of lineage colonization, diversification, and decline across archipelagos, inferring an important role for competition amongst ecologically similar taxa in driving concurrent niche changes.
José María Fernández‐Palacios, Rüdiger Otto, Robert J. Whittaker   +2 more
wiley   +1 more source

Regulatory compliance and support for altered management of the exotic pet trade

Conservation Biology, Volume 40, Issue 4, August 2026.
Abstract Globally, the exotic pet trade has contributed to species invasion, disease, and animal welfare risks. Although scientists have advocated for increased trade regulation, the success of management and regulatory efforts depends on compliance by participants in the exotic pet trade. We used a regulatory compliance framework to investigate exotic
Elizabeth N. Pratt, Julie L. Lockwood, Elizabeth G. King, Elizabeth F. Pienaar   +3 more
wiley   +1 more source

Infection by the Mycobacterium avium-intracellulare complex in patients with HIV/AIDS in a Peruvian hospital: a series of cases

Revista Peruana de Medicina Experimental y Salud Pública, 2017
There is little information on the presence of the Mycobacterium avium-Intracellulare (MAC) complex in Peru. Five cases of MAC infection are described in patients with HIV/AIDS at the National Hospital Dos de Mayo, Lima – Peru.
César Ticona-Huaroto, Lilian Astocondor-Salazar, Juan Montenegro-Idrogo, Gustavo Valencia-Mesias, Jaime Soria   +4 more
doaj   +1 more source