Interdisciplinary Laboratory of Biosciences, Faculty of Medicine, University of Brasília, Brasília, Brazil.
Dermatology Diagnostic Group, Dermatomicology Laboratory, Faculty of Medicine, University of Brasília, Brasília, Brazil.
Front Cell Infect Microbiol. 2022 Aug 9;12:956112. doi: 10.3389/fcimb.2022.956112. eCollection 2022.
Tegumentary leishmaniasis is a tropical disease caused by protozoa of the genus Clinically, the disease presents a broad spectrum of symptoms, the mechanisms underlying the development of lesions remaining to be fully elucidated. In the present work, we performed a correlation and multiparametric analysis to evaluate how parasite- and host-related aspects associate with each other, and with the different clinical manifestations of tegumentary leishmaniasis. This cross-sectional study involved 75 individuals from endemic areas of Brazil, grouped according to their symptoms. species were determined by DNA sequencing, and parasite load, antibody production, and cytokine profile were evaluated by kDNA qPCR, ELISA, and flow cytometry. Data were analyzed using the Chi-square test, principal component analysis, canonical discriminant analysis, and correlation analysis. Among the recruited patients, 23 (31%) were asymptomatic, 34 (45%) had primary cutaneous leishmaniasis, 10 (13%) presented recurrent cutaneous leishmaniasis, and eight (11%) had mucocutaneous leishmaniasis. species identified included , and . Surprisingly, no RNA virus infection was detected in any sample. In summary, our work showed that parasite load, antibody production, and cytokine levels alone are not determinants for tegumentary leishmaniasis symptoms. However, the correlation analysis allowed us to observe how these factors are correlated to each other within the groups, which revealed a unique network for each clinical manifestation. Our work reinforces the complexity of tegumentary leishmaniasis outcomes - which are associated with multiple host and parasite-related elements and provides a holistic model of the disease.
皮肤利什曼病是一种热带疾病,由原生动物属引起。临床上,该疾病表现出广泛的症状,其病变发展的机制仍有待充分阐明。在本工作中,我们进行了相关性和多参数分析,以评估寄生虫和宿主相关方面如何相互关联,并与皮肤利什曼病的不同临床表现相关联。这项横断面研究涉及来自巴西流行地区的 75 名个体,根据他们的症状进行分组。通过 DNA 测序确定 种,通过 kDNA qPCR、ELISA 和流式细胞术评估寄生虫载量、抗体产生和细胞因子谱。使用卡方检验、主成分分析、典型判别分析和相关性分析对数据进行分析。在所招募的患者中,23 名(31%)无症状,34 名(45%)患有原发性皮肤利什曼病,10 名(13%)患有复发性皮肤利什曼病,8 名(11%)患有黏膜皮肤利什曼病。鉴定出的 种包括 、和 。令人惊讶的是,在任何样本中都未检测到 RNA 病毒感染。总之,我们的工作表明,寄生虫载量、抗体产生和细胞因子水平本身并不是皮肤利什曼病症状的决定因素。然而,相关性分析使我们能够观察到这些因素在组内是如何相互关联的,这揭示了每种临床表现的独特网络。我们的工作加强了皮肤利什曼病结果的复杂性——与多个宿主和寄生虫相关因素有关,并提供了该疾病的整体模型。