Canine Leishmaniasis Progression is Associated with Vitamin D Deficiency

Area of Science:

• Veterinary Medicine
• Immunology
• Nutritional Science

Background:

• Vitamin D deficiency is associated with various health issues, including autoimmune and infectious diseases.
• The role of vitamin D in canine leishmaniasis, a significant zoonotic disease, is not well understood.
• Control of canine leishmaniasis in the Mediterranean impacts human leishmaniasis incidence.

Purpose of the Study:

• To investigate vitamin D levels in dogs with leishmaniasis.
• To explore the relationship between vitamin D levels and leishmaniasis progression in dogs.
• To assess the correlation of vitamin D with parasitological and immunological parameters in canine leishmaniasis.

Main Methods:

• Serum vitamin D levels were measured in 68 healthy and diseased dogs from an endemic area.
• Correlation analysis was performed between vitamin D levels and parasitological/immunological markers.
• Leishmania-specific cellular immune response, leishmania skin test, and IFN-γ levels were assessed.

Main Results:

• Dogs with leishmaniasis exhibited significantly lower vitamin D levels compared to healthy and asymptomatic dogs.
• Vitamin D deficiency correlated with parameters associated with leishmaniasis progression.
• No correlation was found between vitamin D levels and the Leishmania-specific cellular immune response or IFN-γ levels.

Conclusions:

• Lower vitamin D levels are associated with canine leishmaniasis.
• Vitamin D deficiency may play a role in leishmaniasis progression, independent of cellular immunity.
• Further research is needed to elucidate the functional role of vitamin D in canine leishmaniasis control.