Related Experiment Video
Updated: May 27, 2026
11:12
Immunometabolic Circuits in Infection for Advancing Host Directed Therapies
Published on: September 13, 2024
Lipid Mediators in Host-Pathogen Interactions during Leishmania Infection: Friends or Foes?
Yasmin Monara Ferreira de Sousa Andrade1, Darlaine Alves Silva1, Tainá Larissa Pires Nascimento1
1Núcleo de Estudos de Agentes Infecciosos e Vetores (NAIVE), Centro das Ciências Biológicas e da Saúde, Universidade Federal do Oeste da Bahia (UFOB), Barreiras 47808-021, Bahia, Brasil.
ACS Infectious Diseases
|May 25, 2026
Summary
Lipid mediators significantly influence leishmaniasis progression. While some, like Leukotriene B4 (LTB4), reduce parasite load, others, such as Prostaglandin E2 (PGE2), worsen the infection and disease severity.
Area of Science:
- Immunology
- Parasitology
- Biochemistry
Background:
- Lipid mediators modulate inflammatory responses in infectious diseases.
- Their roles in the Leishmania-host interaction can be species-dependent and antagonistic.
- Understanding these mediators is crucial for leishmaniasis management.
Purpose of the Study:
- To analyze the role of lipid mediators in the Leishmania-host interaction.
- To identify key cell types, eicosanoids, and their influence during infection.
- To elucidate the impact of lipid mediators on leishmaniasis pathogenesis.
Main Methods:
- In vitro infection models using macrophages and neutrophils.
- In vivo experimental and clinical leishmaniasis studies.
- Analysis of eicosanoids like LTB4, PGE2, PGF2α, HETEs, and Resolvin D1.
Main Results:
- LTB4 reduces parasite load in vitro.
- PGE2 and PGF2α suppress immune response, aiding parasite survival.
- PGE2 is linked to visceralization and persistent lesions in vivo.
- HETEs and Resolvin D1 favor Leishmania infection and severe disease.
Conclusions:
- Lipid mediators critically regulate inflammatory responses and disease progression in leishmaniasis.
- Specific mediators like PGE2 and LTB4 have opposing effects on parasite control.
- Further research into therapeutic interventions targeting lipid mediator production is warranted.
Related Concept Videos
01:22Microbial Interactions: Parasitism
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
01:25Colonisation of Pathogens
Pathogen colonization of host tissues is a critical step in the development of infectious diseases. Various pathogenic microorganisms, including bacteria, fungi, viruses, and protozoa, have evolved complex strategies to attach to, invade, and persist within host environments. These mechanisms enable pathogens to establish infections, evade immune responses, and resist antimicrobial treatments.Attachment to Host CellsIn bacteria, colonization typically begins with adherence to host epithelial...
01:31Defense Against Bacterial Pathogens
The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...
01:28Fungal Phylum Microsporidia
Microsporidia are a group of obligate intracellular fungi that were initially classified as protists but were later reclassified based on phylogenetic, molecular, and structural evidence linking them to the Chytridiomycota. These unicellular, non-motile organisms are highly specialized parasites that infect a wide range of animal hosts, including humans. They have evolved extensive genomic and metabolic reductions, making them highly dependent on their hosts for survival.Morphology and Genomic...