Lymphocyte transformation test in patients with American leishmaniasis

Area of Science:

• Immunology
• Infectious Diseases
• Dermatology

Background:

• American leishmaniasis (AL) presents with diverse clinical manifestations.
• Assessing cell-mediated immunity is crucial for understanding AL pathogenesis.
• The lymphocyte transformation test (LTT) with phytohemagglutinin (PHA) is a common in vitro measure of cellular immune response.

Purpose of the Study:

• To investigate the correlation between LTT with PHA and the clinical spectrum of American leishmaniasis.
• To evaluate the relationship between LTT results, disease duration, and Montenegro reaction in AL patients.

Main Methods:

• A study involving 12 patients diagnosed with American leishmaniasis and 25 healthy controls.
• Analysis of different clinical forms of AL, including ulcerated cutaneous, ulcero-nodular lymphangitic, mucous cutaneous, and verrucous.
• Assessment of Montenegro reaction positivity and macroscopic measurements.

Main Results:

• No evidence of immunodeficiency was found in the studied AL patients.
• No significant correlation was observed between LTT results and the various clinical forms of AL.
• The duration of the disease and the Montenegro reaction status did not correlate with LTT outcomes.

Conclusions:

• The lymphocyte transformation test using phytohemagglutinin is not an adequate indicator for assessing the cell immune system in cases of American leishmaniasis.
• Further research may be needed to identify more suitable immunological markers for AL.