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Titolo:
The re-emergence of American Visceral Leishmaniasis in an old focus in Venezuela. II. Vectors and parasites
Autore:
Feliciangeli, MD; Rodriguez, N; De Guglielmo, Z; Rodriguez, A;
Indirizzi:
Univ Carabobo, Fac Ciencias Salud, Maracay, Venezuela Univ Carabobo Maracay Venezuela Fac Ciencias Salud, Maracay, Venezuela Cent Univ Venezuela, Inst Biomed, Caracas, Venezuela Cent Univ Venezuela Caracas Venezuela , Inst Biomed, Caracas, Venezuela
Titolo Testata:
PARASITE-JOURNAL DE LA SOCIETE FRANCAISE DE PARASITOLOGIE
fascicolo: 2, volume: 6, anno: 1999,
pagine: 113 - 120
SICI:
1252-607X(199906)6:2<113:TROAVL>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
CUTANEOUS LEISHMANIASIS; LUTZOMYIA-EVANSI; COLOMBIA; PSYCHODIDAE; DIAGNOSIS; DIPTERA;
Keywords:
Americon Visceial Leishmaniasis; AVL; vectors; Lutzomyia evansi; Lutzomyio longipolpis; Leishmani chagasi; Venezuela;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Feliciangeli, MD Univ Carabobo, Fac Ciencias Salud, Apdo 4873, Maracay, Venezuela Univ Carabobo Apdo 4873 Maracay Venezuela ay, Venezuela
Citazione:
M.D. Feliciangeli et al., "The re-emergence of American Visceral Leishmaniasis in an old focus in Venezuela. II. Vectors and parasites", PARASITE, 6(2), 1999, pp. 113-120

Abstract

As part of an epidemiological study in an old focus of American Visceral Leishmaniosis (AVL) in Venezuela (Guayabita, Aragua State), a longitudinal entomological survey (January 1993-June 1994) was carried out. A total of 3,239 males and 6,043 females belonging to 11 phlebotomine sandfly species were collected. The two recognised Vectors of AVL in the New World, Lutzomyiaevansi and Lu. longipalpis were found to be sympatric. Lutzomyia evansi was the dominant species (86.4 %), almost ten fold times more abundant than Lu. longipalpis (10.6 %). The two species alternated seasonally: Lu evansi peaked at the end of the rainy season while Lu. longipalpis, almost virtually absent during such period, increased in the dry season. This species seems more greatly influenced by the temperature. Seven of 4,559 Lutzomyia evansi (0.15 %) and one of 353 Lu. longipalpis (0.28 %) were Found positive forsuprapyloric promastigotes. Using the polymerase chain reaction (PCR) withuniversal primers, all isolates were identified as Leishmania spp. Two cultures from Lu. evansi, IEVA/VE/93/UCNA-2 and IEVA/VE/93/UCNA-3, were established. k-DNA restriction analysis showed high homologies between these isolates and Leishmania chagasi. High hybridization signal with L. chagasi specific kDNA confirmed these results. These findings suggest that Lu. evansi may play a role as vector of visceral leishmaniasis in this area. The identity of the parasite carried by Lu. longipalpis needs to be confirmed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 16/07/20 alle ore 06:43:46