Lymphatic filarial species differentiation using evolutionarily modified tandem repeats: generation of new genetic markers.
Identifieur interne : 005792 ( Main/Exploration ); précédent : 005791; suivant : 005793Lymphatic filarial species differentiation using evolutionarily modified tandem repeats: generation of new genetic markers.
Auteurs : Moorthy Sakthidevi [Inde] ; Vadivel Murugan ; Sugeerappa Laxmanappa Hoti ; Perumal KalirajSource :
- Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases [ 1567-7257 ] ; 2010.
Descripteurs français
- KwdFr :
- ADN des helminthes (génétique), Animaux, Antigènes d'helminthe (génétique), Brugia malayi (génétique), Diagnostic différentiel, Filariose lymphatique (diagnostic), Filariose lymphatique (parasitologie), Introns (génétique), Marqueurs génétiques (génétique), Modèles génétiques, Protéines recombinantes (génétique), Réaction de polymérisation en chaîne, Spécificité d'espèce, Séquences répétées en tandem, Wuchereria bancrofti (génétique).
- MESH :
- diagnostic : Filariose lymphatique.
- génétique : ADN des helminthes, Antigènes d'helminthe, Brugia malayi, Introns, Marqueurs génétiques, Protéines recombinantes, Wuchereria bancrofti.
- parasitologie : Filariose lymphatique.
- Animaux, Diagnostic différentiel, Modèles génétiques, Réaction de polymérisation en chaîne, Spécificité d'espèce, Séquences répétées en tandem.
English descriptors
- KwdEn :
- Animals, Antigens, Helminth (genetics), Brugia malayi (genetics), DNA, Helminth (genetics), Diagnosis, Differential, Elephantiasis, Filarial (diagnosis), Elephantiasis, Filarial (parasitology), Genetic Markers (genetics), Introns (genetics), Models, Genetic, Polymerase Chain Reaction, Recombinant Proteins (genetics), Species Specificity, Tandem Repeat Sequences, Wuchereria bancrofti (genetics).
- MESH :
- chemical , genetics : Antigens, Helminth, DNA, Helminth, Genetic Markers, Recombinant Proteins.
- diagnosis : Elephantiasis, Filarial.
- genetics : Brugia malayi, Introns, Wuchereria bancrofti.
- parasitology : Elephantiasis, Filarial.
- Animals, Diagnosis, Differential, Models, Genetic, Polymerase Chain Reaction, Species Specificity, Tandem Repeat Sequences.
Abstract
Polymerase chain reaction based methods are promising tools for the monitoring and evaluation of the Global Program for the Elimination of Lymphatic Filariasis. The currently available PCR methods do not differentiate the DNA of Wuchereria bancrofti or Brugia malayi by a single PCR and hence are cumbersome. Therefore, we designed a single step PCR strategy for differentiating Bancroftian infection from Brugian infection based on a newly identified gene from the W. bancrofti genome, abundant larval transcript-2 (alt-2), which is abundantly expressed. The difference in PCR product sizes generated from the presence or absence of evolutionarily altered tandem repeats in alt-2 intron-3 differentiated W. bancrofti from B. malayi. The analysis was performed on the genomic DNA of microfilariae from a number of patient blood samples or microfilariae positive slides from different Indian geographical regions. The assay gave consistent results, differentiating the two filarial parasite species accurately. This alt-2 intron-3 based PCR assay can be a potential tool for the diagnosis and differentiation of co-infections by lymphatic filarial parasites.
DOI: 10.1016/j.meegid.2010.01.012
PubMed: 20132908
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en">Polymerase chain reaction based methods are promising tools for the monitoring and evaluation of the Global Program for the Elimination of Lymphatic Filariasis. The currently available PCR methods do not differentiate the DNA of Wuchereria bancrofti or Brugia malayi by a single PCR and hence are cumbersome. Therefore, we designed a single step PCR strategy for differentiating Bancroftian infection from Brugian infection based on a newly identified gene from the W. bancrofti genome, abundant larval transcript-2 (alt-2), which is abundantly expressed. The difference in PCR product sizes generated from the presence or absence of evolutionarily altered tandem repeats in alt-2 intron-3 differentiated W. bancrofti from B. malayi. The analysis was performed on the genomic DNA of microfilariae from a number of patient blood samples or microfilariae positive slides from different Indian geographical regions. The assay gave consistent results, differentiating the two filarial parasite species accurately. This alt-2 intron-3 based PCR assay can be a potential tool for the diagnosis and differentiation of co-infections by lymphatic filarial parasites.</div>
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