Evaluation of systemic immunity in atypical cutaneous leishmaniasis caused by Leishmania (L.) infantum chagasi
In some central‐American countries, Leishmania (L.) infantum chagasi infection can cause non‐ulcerated or atypical cutaneous leishmaniasis (NUCL) in addition to the classic clinical form, visceral leishmaniasis (VL). Little is known about the host‐parasite relationship that can contribute to the det...
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Published in | Parasite immunology Vol. 44; no. 1-2; pp. e12896 - n/a |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Wiley Subscription Services, Inc
01.01.2022
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Subjects | |
Online Access | Get full text |
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Summary: | In some central‐American countries, Leishmania (L.) infantum chagasi infection can cause non‐ulcerated or atypical cutaneous leishmaniasis (NUCL) in addition to the classic clinical form, visceral leishmaniasis (VL). Little is known about the host‐parasite relationship that can contribute to the determination of one or another clinical form. The present study had the objective to evaluate the humoral and cellular immunity in the sera of individuals affected by NUCL to improve the comprehension of this atypical host‐parasite interaction. Based on clinical and laboratory diagnosis, serum of 80 individuals was collected to evaluate the cytokines and immunoglobulins profile of NUCL (n = 47), VL patients (n = 5), and negative controls (n = 28). Cytokines were detected using Cytokine Bead Array (CBA) Human Th1/Th2/Th17 kit according to the manufacturer's instructions; class (IgG and IgM), and subclass of (IgG1 and IgG2) immunoglobulins was evaluated by ELISA using specific antigens. The concentration of TNF‐α, IFN‐γ, IL‐2 and IL‐4 cytokines in NUCL, VL and control was present below the detection threshold of CBA kit. IL‐6, IL‐10 and IL‐17A cytokines was lower in NUCL compared to LV patients. Regarding to immunoglobulins, NUCL patients produced 4.0 times more IgG than the control, while VL patients produced 6.6 times more; and IgM level was 1.6 times higher in NUCL and 2.6 times in VL patients compared to the control. Concerning the immunoglobulins subclass, only VL patients showed positive reaction for IgG1, and IgG2 did not show positive reaction among the groups. The results showed a weak cellular and humoral systemic immune response in NUCL patients. |
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Bibliography: | Funding information Márcia Dalastra Laurenti and Wilfredo Sosa‐Ochoa equally contributed to this work. This work was supported by São Paulo Research Foundation #2014/50315‐0, #2017/24834‐9 and #2018/04698‐6. Wilfredo Sosa‐Ochoa is supported by PhD Scholarship from CAPES, Brazil. Marcia Laurenti is the recipient of a research fellowship from the National Council for Scientific and Technological Development (CNPq), grant # 302174/2017‐6. WSO supported by Dirección de Investigación y Posgrados de la UNAH grant #02‐2015 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0141-9838 1365-3024 |
DOI: | 10.1111/pim.12896 |