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Titolo:
SUSCEPTIBILITY TO LEISHMANIA-MAJOR OF DIFFERENT POPULATIONS OF PHLEBOTOMUS-PAPATASI (DIPTERA, PSYCHODIDAE) FROM ENDEMIC AND NONENDEMIC REGIONS OF EGYPT
Autore:
HANAFI HA; ELSAWAF BM; FRYAUFF DJ; BEAVERS GM; TETREAULT GE;
Indirizzi:
USN,MED RES UNIT 3,RES PUBLICAT BRANCH,CODE 101F,PSC 452,POB 5000 FPOAE 09835 USN,MED RES UNIT 3 CAIRO EGYPT AIN SHAMS UNIV,FAC SCI,DEPT ENTOMOL CAIRO EGYPT
Titolo Testata:
Annals of tropical medicine and parasitology
fascicolo: 1, volume: 92, anno: 1998,
pagine: 57 - 64
SICI:
0003-4983(1998)92:1<57:STLODP>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SURFACE LIPOPHOSPHOGLYCAN; CUTANEOUS LEISHMANIASIS; EXPERIMENTAL-INFECTION; NORTH SINAI; SAND FLIES; TRANSMISSION; VECTORS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
29
Recensione:
Indirizzi per estratti:
Citazione:
H.A. Hanafi et al., "SUSCEPTIBILITY TO LEISHMANIA-MAJOR OF DIFFERENT POPULATIONS OF PHLEBOTOMUS-PAPATASI (DIPTERA, PSYCHODIDAE) FROM ENDEMIC AND NONENDEMIC REGIONS OF EGYPT", Annals of tropical medicine and parasitology, 92(1), 1998, pp. 57-64

Abstract

The ability of three populations of Phlebotomus papatasi collected from different areas of Egypt (Sinai, Aswan and Delta regions) to acquire successfully and transmit Leishmania major (Sinai sandfly isolate IPAP/EG/89/SI-177) was evaluated in the laboratory. Flies from each population were fed artificially on infected blood suspensions, using a chick-skin-membrane feeding apparatus, and naturally on infected mice. Samples of fed flies were dissected and examined microscopically to determine the infection rate and intensity of parasite infection. The Aswan population had a significantly lower feeding rate (16.2%) than the Sinai (51.2%) and Delta (69.7%) populations (P < 0.0001). The infection rate for the Sinai population was significantly higher (65.9%) than the rate for the Delta (52.3%; P < 0.05) and slightly higher than thatfor the Aswan (62.5%). No differences were observed in the intensity of L. major infection in the midguts of the sandflies examined from any of the three populations. When flies from each population were fed naturally on BALB/c mice infected with L. major, the feeding rates of the three populations showed a similar pattern to that seen in the membrane feeds, with the Aswan population having the lowest rate. In each of two separate trials for each population, a group of artificially infected flies was refed on uninfected BALB/c mice. Thirty-six days following exposure to the infected sandflies in the Sinai population, a leishmanial lesion was observed on the corner of one animal's mouth. These observations provide the final piece of evidence that P. papatasi is a vector of L. major in Egypt.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 19:57:42