Molecular Tracking of the Leishmania Parasite

With the Visceral Leishmaniasis/Kala-azar Elimination Program in South Asia in its consolidation phase, the focus is mainly on case detection, vector control, and identifying potential sources of infection. Accordingly, emphasis is presently on curbing transmission, which is potentially achievable b...

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Main Authors: Srija Moulik, Shilpa Sengupta, Mitali Chatterjee
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-02-01
Series:Frontiers in Cellular and Infection Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fcimb.2021.623437/full
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author Srija Moulik
Shilpa Sengupta
Mitali Chatterjee
author_facet Srija Moulik
Shilpa Sengupta
Mitali Chatterjee
author_sort Srija Moulik
collection DOAJ
description With the Visceral Leishmaniasis/Kala-azar Elimination Program in South Asia in its consolidation phase, the focus is mainly on case detection, vector control, and identifying potential sources of infection. Accordingly, emphasis is presently on curbing transmission, which is potentially achievable by identification and elimination of potential reservoirs. The strongest contenders for being the disease reservoir are cases of Post Kala-azar Dermal Leishmaniasis (PKDL) which occurs in a minor proportion of individuals apparently cured of Visceral Leishmaniasis (VL). The demonstration of parasites in tissue aspirates despite being a risky and invasive process is the gold standard for diagnosis of VL, but is now being replaced by serological tests e.g., rK39 strip test and direct agglutination test. However, these antibody based tests are limited in their ability to diagnose relapses, detect cases of PKDL, and monitor effectiveness of treatment. Accordingly, detection of antigen or nucleic acids by polymerase chain reaction has been successfully applied for monitoring of parasite kinetics. This review article provides updated information on recent developments regarding the available antibody or antigen/nucleic acid based biomarkers for longitudinal monitoring of patients with VL or PKDL and emphasizes the need for availability of studies pertaining to quantification of treatment response or relapse.
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spelling doaj.art-6637df1a130345ef9ed4f7c4e429b8222022-12-21T19:39:25ZengFrontiers Media S.A.Frontiers in Cellular and Infection Microbiology2235-29882021-02-011110.3389/fcimb.2021.623437623437Molecular Tracking of the Leishmania ParasiteSrija MoulikShilpa SenguptaMitali ChatterjeeWith the Visceral Leishmaniasis/Kala-azar Elimination Program in South Asia in its consolidation phase, the focus is mainly on case detection, vector control, and identifying potential sources of infection. Accordingly, emphasis is presently on curbing transmission, which is potentially achievable by identification and elimination of potential reservoirs. The strongest contenders for being the disease reservoir are cases of Post Kala-azar Dermal Leishmaniasis (PKDL) which occurs in a minor proportion of individuals apparently cured of Visceral Leishmaniasis (VL). The demonstration of parasites in tissue aspirates despite being a risky and invasive process is the gold standard for diagnosis of VL, but is now being replaced by serological tests e.g., rK39 strip test and direct agglutination test. However, these antibody based tests are limited in their ability to diagnose relapses, detect cases of PKDL, and monitor effectiveness of treatment. Accordingly, detection of antigen or nucleic acids by polymerase chain reaction has been successfully applied for monitoring of parasite kinetics. This review article provides updated information on recent developments regarding the available antibody or antigen/nucleic acid based biomarkers for longitudinal monitoring of patients with VL or PKDL and emphasizes the need for availability of studies pertaining to quantification of treatment response or relapse.https://www.frontiersin.org/articles/10.3389/fcimb.2021.623437/fullanti-leishmanial antibodiesbiomarkersHIV-VLkinetoplast DNA kDNAmolecular diagnosisPost Kala-azar Dermal Leishmaniasis PKDL
spellingShingle Srija Moulik
Shilpa Sengupta
Mitali Chatterjee
Molecular Tracking of the Leishmania Parasite
Frontiers in Cellular and Infection Microbiology
anti-leishmanial antibodies
biomarkers
HIV-VL
kinetoplast DNA kDNA
molecular diagnosis
Post Kala-azar Dermal Leishmaniasis PKDL
title Molecular Tracking of the Leishmania Parasite
title_full Molecular Tracking of the Leishmania Parasite
title_fullStr Molecular Tracking of the Leishmania Parasite
title_full_unstemmed Molecular Tracking of the Leishmania Parasite
title_short Molecular Tracking of the Leishmania Parasite
title_sort molecular tracking of the leishmania parasite
topic anti-leishmanial antibodies
biomarkers
HIV-VL
kinetoplast DNA kDNA
molecular diagnosis
Post Kala-azar Dermal Leishmaniasis PKDL
url https://www.frontiersin.org/articles/10.3389/fcimb.2021.623437/full
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