Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 3 de 3
Filter
Add more filters










Database
Language
Publication year range
1.
Parasite ; 31: 31, 2024.
Article in English | MEDLINE | ID: mdl-38896103

ABSTRACT

Anopheles coustani has long been recognized as a secondary malaria vector in Africa. It has recently been involved in the transmission of both Plasmodium falciparum and P. vivax in Madagascar. As most secondary malaria vectors, An. coustani mainly bites outdoors, which renders the control of this mosquito species difficult using classical malaria control measures, such as the use of bed nets or indoor residual spraying of insecticides. For a better understanding of the biology and vector competence of a vector species, it is useful to rear the species in the laboratory. The absence of a colony hinders the assessment of the bionomics of a species and the development of adapted control strategies. Here, we report the first successful establishment of an An. coustani colony from mosquitoes collected in Madagascar. We used a forced copulation procedure as this mosquito species will not mate in cages. We describe our mosquito colonization procedure with detailed biological features concerning larval to adult development and survival, recorded over the first six critical generations. The procedure should be easily applicable to An. coustani from different African countries, facilitating local investigation of An. coustani vector competence and insecticide resistance using the colony as a reference.


Title: Colonisation d'Anopheles coustani, vecteur négligé du paludisme à Madagascar. Abstract: Anopheles coustani est reconnu depuis longtemps comme un vecteur secondaire du paludisme en Afrique. Il a récemment été impliqué dans la transmission de Plasmodium falciparum et de P. vivax à Madagascar. Comme la plupart des vecteurs secondaires du paludisme, An. coustani pique principalement à l'extérieur, ce qui rend difficile le contrôle de cette espèce de moustique par les mesures classiques de lutte contre le paludisme telles que l'utilisation de moustiquaires ou la pulvérisation intradomiciliaire d'insecticides à effet rémanent. Pour une meilleure compréhension de la biologie et de la compétence vectorielle d'une espèce vectrice, il est utile d'élever l'espèce en laboratoire. L'absence de colonie gêne l'évaluation de la bionomie d'une espèce et le développement de stratégies de contrôle adaptées. Nous rapportons ici le premier établissement réussi d'une colonie d' An. coustani issue de moustiques collectés à Madagascar. Nous avons utilisé une procédure de copulation forcée car cette espèce de moustique ne s'accouple pas en cage. Nous décrivons notre procédure de colonisation des moustiques avec des caractéristiques biologiques détaillées concernant le développement et la survie des stades larvaires aux adultes, enregistrées au cours des six premières générations critiques. La procédure devrait être facilement applicable aux An. coustani de différents pays africains, facilitant les enquêtes locales sur la compétence vectorielle d'An. coustani et sa résistance aux insecticides, en utilisant une colonie comme référence.


Subject(s)
Anopheles , Mosquito Vectors , Animals , Anopheles/physiology , Anopheles/growth & development , Anopheles/classification , Madagascar , Mosquito Vectors/parasitology , Mosquito Vectors/physiology , Female , Male , Malaria/transmission , Malaria/prevention & control , Larva
2.
Acta Cytol ; 23(4): 327-31, 1979.
Article in English | MEDLINE | ID: mdl-231366

ABSTRACT

In order to determine the frequency and specificity of intranuclear cytoplasmic inclusions (invaginations), described by some as an important criterion for the cytologic diagnosis of thyroid carcinoma, 258 consecutive thyroid aspirates were reviewed. Intranuclear cytoplasmic inclusions were present in 91% of the papillary adenocarcinomas but were not seen in any of the benign thyroid lesions or in any of the few nonpapillary adenocarcinomas in the study. It is concluded that the presence of intranuclear cytoplasmic inclusions in thyroid aspirates is probably specific to thyroid carcinoma but is not necessarily restricted to the papillary variant.


Subject(s)
Carcinoma, Papillary/pathology , Inclusion Bodies/pathology , Thyroid Gland/pathology , Thyroid Neoplasms/pathology , Biopsy, Needle , Cytodiagnosis , Humans , Nuclear Envelope/pathology
3.
Acta Cytol ; 22(3): 146-9, 1978.
Article in English | MEDLINE | ID: mdl-277039

ABSTRACT

The cytopathology of Papanicolaou smears from 23 postmenopausal women with vaginal pessaries is described. The following alterations, when seen in the smear of an elderly postmenopausal woman, were found to be strongly suggestive of pessary use: cytologic atypia in the form of severe inflammatory changes in squamous cells, atypical metaplasia, and reparative changes with a background pattern of acute inflammation and prominent superficial maturation of the squamous cells. A notable additional finding in 13 of the 23 patients was the presence of filamentous organisms resembling Actinomyces and morphologically similar to organisms recently described and specifically identified as Actinomyces in patients with intrauterine devices.


Subject(s)
Actinomyces/isolation & purification , Pessaries , Vagina/cytology , Aged , Bacteria/isolation & purification , Female , Humans , Papanicolaou Test , Vagina/microbiology , Vaginal Smears
SELECTION OF CITATIONS
SEARCH DETAIL
...