Host genetics and parasitic infections

Area of Science:

• Human genetics and immunology
• Parasitic disease epidemiology

Background:

• Parasites cause significant global mortality and morbidity.
• Understanding genetic susceptibility to parasitic diseases is crucial for public health.
• Previous studies often lacked power and replication.

Purpose of the Study:

• To investigate genetic adaptations to parasitic diseases.
• To identify genetic loci associated with susceptibility to parasitic infections.
• To explore shared genetic factors between parasitic diseases and immune disorders.

Main Methods:

• Genetic epidemiological investigations.
• Genome-wide and multicentre studies for severe malaria, visceral leishmaniasis, and cardiac Chagas disease.
• Analysis of helminth infections (schistosomiasis, ascariasis, trichuriasis, onchocerciasis).

Main Results:

• Recent genome-wide studies have provided new insights into severe malaria, visceral leishmaniasis, and cardiac Chagas disease.
• Common genetic loci regulate susceptibility to multiple helminth infections.
• Identified susceptibility loci are shared among parasitic diseases and with allergic/autoimmune disorders.

Conclusions:

• Parasites act as selective pressures for human genetic adaptation.
• Shared genetic factors influence susceptibility to diverse parasitic diseases and immune conditions.
• Parasites may have shaped the evolution of the human immune system.