Activation of apoptosis is one of the most ancient mechanisms to eliminate intracellular infections; the capacity to subvert this programed cell death provides an adaptive advantage to pathogens that persist in an intracellular environment. Leishmania species are obligate intracellular parasites that primarily reside within host macrophages. We demonstrate here that Leishmania infection protects macrophages from cycloheximide-induced apoptosis in a species and strain specific manner. Our data further reveal that Leishmania phosphoglycans and direct contact between parasites and host cells are required for the inhibitory phenotype.
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http://dx.doi.org/10.1016/j.exppara.2009.05.012 | DOI Listing |
Sci Rep
January 2025
Department of Medicinal Chemistry, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran.
Leishmaniasis is a parasitic disease caused by protozoan organisms belonging to the Leishmania genus, affecting many individuals worldwide, with the burden surpassing one million cases. This disease leads to considerable morbidity and mortality, predominantly within tropical and subtropical regions. The current therapeutic options for leishmaniasis are far from ideal, as they fail to achieve a level of efficacy that can be deemed universally effective.
View Article and Find Full Text PDFIran J Pharm Res
September 2024
Department of Parasitology and Mycology, Skin Diseases and Leishmaniasis Research Center, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Background: Malaria parasites have gradually developed resistance to commonly used antimalarial drugs. For decades, chloroquine was the most widely used drug to eradicate malaria. However, with the spread of chloroquine resistance, many countries have adopted combination therapies that utilize two drugs acting synergistically instead of monotherapy.
View Article and Find Full Text PDFACS Omega
January 2025
Department of Pharmacy, Federal University of Rio Grande do Norte, General Cordeiro de Farias Street, CEP, 59012-570 Natal, RN, Brazil.
Leishmaniasis is reported as the second most common protozoonosis, with the highest prevalence and mortality rate. Among the Leishmania drug targets, Pteridine Reductase 1 of (PTR1) proved to be promising because Leishmania is auxotrophic for folates. Thus, this study employed a combination of ligand- and structure-based approaches to screen new benzothiazole compounds as PTR1 inhibitor candidates.
View Article and Find Full Text PDFACS Omega
January 2025
Laboratory of Natural Products and Mass Spectrometry (LAPNEM), Faculty of Pharmaceutical Sciences, Food, and Nutrition (FACFAN), Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul 79070-900, Brazil.
Leishmaniases present a significant global health challenge with limited and often inadequate treatment options available. Traditional microscopic methods for detecting Leishmania amastigotes are time-consuming and error-prone, highlighting the need for automated approaches. This study aimed to implement and validate the YOLOv8 deep learning model for real-time detection, quantification, and categorization of Leishmania amastigotes to enhance drug screening assays.
View Article and Find Full Text PDFEcohealth
January 2025
Department of Agricultural and Environmental Sciences, State University of Santa Cruz, Direction of the University: Campus Soane Nazaré de Andrade, Rod. Jorge Amado, Km 16 - Salobrinho, Ilhéus, Bahia, 45662-900, Brazil.
The black rat Rattus rattus is an exotic and synanthropic rodent prominent in Brazil and with high adaptation to urban areas. The species have an omnivorous diet feed on human food resources, potentially becoming infected and spreading infectious agents that cause zoonoses such as leptospirosis, leishmaniosis, Chagas disease, and toxoplasmosis, which are significant public health concerns in the country. We analyzed the epidemiologic profile of R.
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