Leishmaniasis in tuscany (Italy): VII. Studies on the role of the black rat, Rattus rattus , in the epidemiology of visceral leishmaniasis
Identifieur interne : 001734 ( Main/Exploration ); précédent : 001733; suivant : 001735Leishmaniasis in tuscany (Italy): VII. Studies on the role of the black rat, Rattus rattus , in the epidemiology of visceral leishmaniasis
Auteurs : L. Gradoni [Italie] ; E. Pozio [Italie] ; M. Gramiccia [Italie] ; M. Maroli [Italie] ; S. Bettini [Italie]Source :
- Transactions of the Royal Society of Tropical Medicine and Hygiene [ 0035-9203 ] ; 1983.
Abstract
The recent finding that four Leishmania isolates from Rattus rattus are enzymologically identical to L. infantum, aetiological agent of human and canine visceral leishmaniasis in the Mediterranean area, has stimulated further research on the role of R. rattus in the epidemiology of visceral leishmaniasis in Tuscany, Italy. The present work has led to the following results: (a) R. rattus experimentally infected with L. infantum displayed a general resistance to the parasite, even though it appeared that a very low number of amastigotes persisted in the animal for a long period; (b) Phlebotomus perniciosus and P. perfiliewi induced to feed on rats, with either a massive visceral infection or a subpatent immunodepressed infection, became infected, though in different proportions; (c) P. perniciosus and P. perfiliewi were readily attracted to, and fed on, the black rat in nature. These findings, together with those obtained earlier, strongly suggest that the black rat may be one of the wild reservoirs of L. infantum in the areas under study.
Url:
- https://api.istex.fr/document/F92FE29737B2819237F4B204DAF22432C9279700/fulltext/pdf
- https://api.istex.fr/document/1B631D8AA230AE69DC2D1D24B4185198501389E3/fulltext/pdf
DOI: 10.1016/0035-9203(83)90102-5
Affiliations:
Links toward previous steps (curation, corpus...)
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- to stream Istex, to step Curation: 000B34
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Le document en format XML
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<front><div type="abstract" xml:lang="en">The recent finding that four Leishmania isolates from Rattus rattus are enzymologically identical to L. infantum, aetiological agent of human and canine visceral leishmaniasis in the Mediterranean area, has stimulated further research on the role of R. rattus in the epidemiology of visceral leishmaniasis in Tuscany, Italy. The present work has led to the following results: (a) R. rattus experimentally infected with L. infantum displayed a general resistance to the parasite, even though it appeared that a very low number of amastigotes persisted in the animal for a long period; (b) Phlebotomus perniciosus and P. perfiliewi induced to feed on rats, with either a massive visceral infection or a subpatent immunodepressed infection, became infected, though in different proportions; (c) P. perniciosus and P. perfiliewi were readily attracted to, and fed on, the black rat in nature. These findings, together with those obtained earlier, strongly suggest that the black rat may be one of the wild reservoirs of L. infantum in the areas under study.</div>
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