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Molecular Diagnosis Of Human Visceral Leishmaniasis | 31523
ISSN: 1747-0862

Journal of Molecular and Genetic Medicine
Open Access

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Molecular diagnosis of human visceral Leishmaniasis

International Conference and Exhibition on Molecular Medicine and Diagnostics

Alessandra R E de O Xavier, Mandacaru, Mauro Aparecido de Sousa Xavier, Silvio Fernando Guimaraes de Carvalho and Beatriz Dolabela de Lima

Posters-Accepted Abstracts: J Mol Genet Med

DOI: 10.4172/1747-0862.S1.007

Abstract

Visceral leishmaniasis (VL) is an endemic and high mortality rate disease detected in around 65 countries, including Brazil.
Three hundred and fifty million people are in the risk area and five hundred thousand new cases arise each year. Among the
Brazilian area, the north of Minas Gerais state is considered high risk area. Mortality and severity of VL can be prevented with correct
diagnosis, resulting in appropriate treatment. The definitive VL diagnosis is the demonstration of amastigotes parasite cells (Giemsastained
slides) in splenic smears (sensitivity from 95% to 98%) or bone marrow aspirates (sensitivity from 53% to 95%). The Serologybased
tests, such as rK39 ELISA and dipstick have high sensitivities and specificities but are not able to discriminate between past and
current infections. The molecular diagnosis of VL by PCR on blood samples is an alternative method that presents high sensitivity
and specificity. Therefore, efforts have been made to develop PCR methods using peripheral blood instead of bone narrow aspirates or
splenic smear. We have been designing and testing specific primers to rRNA 18S and kDNA to be used as tool for VL diagnosis. Our
results are very optimistic (sensitivity of 92%). The detection of DNA from parasite after VL treatment could be of great importance
in the diagnosis, since it can be regarded as an important marker for healing. The molecular diagnosis of VL is a project performed
by State University of Montes Claros and supported by University of Brasilia. The Ethical clearance for this project was obtained.

Biography

Alessandra R E de O Xavier has completed her PhD at University of Brasilia and she has been attempting Post-Doctoral studies at Federal University of Minas Gerais.
She worked in the QC Microbiology at Novo Nordisk, where she had experience in Industrial Microbiology acting on: Validation of microbiological analytical methods,
writing standard operating procedures, training in microbiological methods, qualification of equipment and Rapid Microorganisms Identification methods. She also has
experience in teaching in higher education, mainly teaching and researching in the Microbiology and Molecular Biology areas, focusing on diagnostics methods. She has
been member of the validation committee at Novo Nordisk, as well as Director of Research and Ethics Committee’s member at University. She is expert in rapid methods for
microorganism’s identification and molecular diagnostic of diseases. Currently, she is a Professor in the Medicine Graduation and Biotechnology post-graduation courses
at State University of Montes Claros.

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