Differences in the Cellular Immune Response during and after Treatment of Sudanese Patients with Post-kala-azar Dermal Leishmaniasis, and Possible Implications for Outcome

Autor: Ana Torres, Brima Musa Younis, Mohammed Alamin, Samuel Tesema, Lorena Bernardo, Jose Carlos Solana, Javier Moreno, Alaa-aldeen Mustafa, Fabiana Alves, Ahmed Mudawi Musa, Eugenia Carrillo
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Epidemiology and Global Health, Vol 14, Iss 3, Pp 1167-1179 (2024)
Druh dokumentu: article
ISSN: 2210-6014
DOI: 10.1007/s44197-024-00270-0
Popis: Abstract Background The host cellular immune response associated with two treatments for post-kala-azar dermal leishmaniasis (PKDL) - paromomycin plus miltefosine (Arm 1), and liposomal amphotericin B plus miltefosine (Arm 2) - was examined in Sudanese patients before treatment (D0), at the end of treatment (D42), and during the post-treatment period (D180). Methods Whole blood samples were stimulated with soluble Leishmania antigen for 24 h (whole blood assay [WBA]) and the concentrations of Th1/Th2/Th17-associated cytokines, IP-10, PDL-1 and granzyme B were determined. Results The Arm 1 treatment (98.2% cure rate) induced a Th1/Th2/Th17 response, while the Arm 2 treatment (80% cure rate) induced a Th1/Th2 response. Five Arm 2 patients relapsed and showed lower IFN-γ, TNF and IL-1β concentrations at D0 than non-relapsers in this Arm. In patients with low-IFN-γ-production at D0, Arm 1 treatment led to a better host immune response and clinical outcome than Arm 2 treatment. Conclusions A Th1/Th2/Th17 response was associated with a higher cure rate. Patients with low IFN-γ, TNF and IL-1β before treatment are more likely to relapse if they undergo Arm 2-type treatment. Determining IFN-γ, TNF and IL-10 levels prior to treatment could help predict patients at higher risk of relapse/recovery from PKDL. Trial Registration ClinicalTrials.gov NCT03399955, Registered 17 January 2018, https://clinicaltrials.gov/study/ NCT03399955. Graphical Abstract
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