Development of a new accurate lateral flow immunoassay for diagnosis of human leptospirosis

Dublin Core

Title

Development of a new accurate lateral flow immunoassay for diagnosis of human leptospirosis

Subject

LEPTOSPIROSIS
DIAGNOSTICO
TEST RAPIDO
BIBLIOGRAFIA NACIONAL QUIMICA
2024

Abstract

Purpose: The current diagnostic methods for leptospirosis diagnosis are technically complex and expensive, with limited applicability to specialized laboratories. Furthermore, they lack diagnostic accuracy in the acute stage of the disease, which coincides with a period when antibiotics are highly effective. New simple and accurate tests are mandatory to decentralize and improve diagnosis. Here, we introduced a new lateral flow immunoassay (Lepto-LF) for human leptospirosis. Methods: We conducted a double-blinded assay using 104 serum samples from patients with confirmed or discarded diagnosis for leptospirosis. The diagnostic performance of Lepto-LF was estimated across different ranges of days from onset of symptoms (dpo), considering the diagnostic algorithm as reference standard. Additionally, it was compared with the screening methods enzyme-linked immunosorbent assay (IgM-ELISA) and the slide agglutination test using temperature-resistant antigen (SATR). Results: Lepto-LF exhibited perfect diagnostic performance with a Youden´s index J = 1 from 6 dpo in the acute phase. IgM-ELISA gave slightly lower accuracy with J = 0.91 and 95.5% of both sensitivity and specificity; while SATR showed a markedly inferior yield (J = 0.41, sensitivity = 95.5%, specificity = 45.5%). The performances remained consistent in the convalescence phase of the disease (> 10 dpo). Conclusion Lepto-LF was found to be a reliable test for simple, rapid and early diagnosis of leptospirosis, resulting a promising tool for decentralizing leptospirosis diagnosis and enabling timely treatment of patients. In addition, Lepto-LF may be employed as confirmatory test, especially in remote areas and vulnerable contexts where the standard MAT is not available.

Creator

Pujato, Nazarena
Gimenez, Juan M.
Peretti, Leandro E.
Landolt, Noelia Y.
Jacob, Paulina
Chiani, Yosena T.
Schmeling, Maria F.
Vanasco, Norma B.

Source

European Journal of Clinical Microbiology & Infectious Diseasesv. 43, nº10, 2024.--pp. 1959–1968

Publisher

Springer

Date

2024

Rights

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Language

Inglés

Type

Artículo

Identifier

10.1007/s10096-024-04912-w

Document Item Type Metadata

Original Format

PDF
Date Added
December 3, 2024
Collection
Bibliografía Nacional Química
Item Type
Document
Citation
Pujato, Nazarena et al., “Development of a new accurate lateral flow immunoassay for diagnosis of human leptospirosis,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/6851.