The vector competence of Culex quinquefasciatus from five localities in Brazil to Dirofilaria immitis was evaluated experimentally. Females from each locality were fed on an infected dog ( approximately 6 microfilariae/microl blood). A sample of blood fed mosquitoes were dissected approximately 1 h after blood meal. These results demonstrated that all had ingested microfilariae (mean, 4.8 to 24...

The gravid uterus with zygotes and microfilariae in utero of Brugia pahangi, a rich source of antigen as revealed by a recent immunofluorescent technique, were studied ultrastructurally. The epithelial cells of uterus show ultrastructural features of synthetically active cells. Their secretions may provide nutrients for the egg in utero. On the basal side, the uterine epithelial cells may also ...

A cDNA from adult female Onchocerca volvulus encoding the C-terminal portion of a tropomyosin isoform (termed MOv-14) has been shown previously to confer protective immunity in rodent models of onchocerciasis. The full-length sequence (designated Ov-tmy-1) obtained by PCR amplification, codes for a protein of 33 kDa and shares 91% identity with tropomyosins from other nematodes, falling to 57% ...

To comprehend the effects of emerging infectious diseases on both human and animal health, it is necessary to understand ecology pathogens that have wildlife reservoirs. In this study, we determined prevalence parasites Trypanosoma spp. filarial nematodes in bloodstream birds around Kruger National Park, South Africa, partly test hypothesis season influences parasitaemia. Other factors consider...

Lymphatic filariasis is a major public health problem in India. It is unusual to find microfilariae in fine needle aspiration cytology (FNAC) smears of lymph nodes inspite of very high incidence in India. It is estimated that about 553.7 million 1 people are at risk of lymphatic filariasis infection in 243 districts across India. In the absence of clinical features of filariasis, FNAC may help ...

Abstract A 17-year-old asymptomatic male from The Gambia presented for a routine health examination after migration to Spain. Laboratory diagnosis confirmed the presence of Loa loa microfilariae. This unusual finding emphasizes importance screening in newly arrived migrants and need an extended anamnesis including migratory route previous travels.

Starting from milbemycin D (1), milbemycin A4 (2) and milbemycin A3 (3), a series of 5-keto-5-oxime derivatives were synthesized by selective oximation at the alpha,beta-conjugated carbonyl function of the 5-ketomilbemycins (4-6). The activities of the synthesized compounds were studied in dogs naturally infested with microfilariae of Dirofilaria immitis. The 5-keto-5-oximes of milbemycin D (7)...

every Fijian is the subject of filariasis. These reasons, together with the preceding (1) are: (a) adult filarioe are to be found in the lymphatics and other tissues without the presence in the blood of corresponding microfilariae ; (b) a large proportion of Fijians are effected with what in common with others I regard as filarial disease, and in whom no microfilarire can be found in the blood....