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Biomedical subjects

J Cabaret

Publications and source records attributed to J Cabaret.

At least 127 records · Page 7Linked to original sources
PubMed1989

Identification of Schistosoma haematobium, S. bovis and S. curassoni by multivariate analysis of cercarial papillae indices.

The disposition of cercarial papillae of 68 pre-identified Schistosoma species was established. All the cercariae originated from Africa and Madagascar and were either obtained from natural or experimental infections, and belonged to three species Schistosoma haematobium, S. bovis and S. curassoni. Discriminant analysis was based on nine characters: average values, skewness and kurtosis of three cercarial indices (AD, AL and U) for each sample or isolate. AD, AL correspond respectively to the relative distance between dorsal and lateral papillae. U corresponds to the total number of tail stem papillae. With the exception of two cases of the 68 (one of them corresponding to cercariae shed by a non-African experimentally infected snail), the method enabled discrimination of S. haematobium, S. bovis and S. curassoni.

Animals↗
PubMed1989

Muellerius capillaris in north-east Zaire: prevalence in sheep and goats and determination of intermediate hosts.

Muellerius capillaris was the only species of nematode recovered from the lungs of young and adult sheep and goats of north-east Zaire. The prevalences were of 19% (sheep) and 32% (goats). The slug Atoxon pallens contained larvae in natural conditions and represents a potential intermediate host. The land snails Achatinidae (Achatina stuhlmanni and Limicolaria spp.) could not be experimentally infected with M. capillaris larvae.

Animals↗
PubMed1988

Natural infection of land-snails by protostrongylids on a pasture grazed by sheep in the Rabat area of Morocco.

The output by sheep of first-stage protostrongylid larvae, and the population density and level of infection of terrestrial molluscs were assessed monthly during a 1-year study. Limax maximus was the most infected mollusc. Juveniles were less infected than adults, for Cernuella virgata and Theba pisana; the reverse was observed for Otala lactea. Banded individuals had a lower intensity of infection than the non-banded ones for C. virgata and T. pisana. Sixty-one percent of protostrongylid larvae in molluscs on the pastures studied were found in C. virgata, and 25% in O. lactea. The infectivity of the pasture for sheep was related to rainfall.

Animals↗
PubMed1988

Forest and savanna onchocerciasis: comparative morphometric histopathology of skin lesions.

A comparative study was made of skin biopsies from onchocerciasis patients living in the forest and in the savanna of West Africa. The lesions and their pathogenesis were similar in the two series of patients. An inflammatory reaction around the extra-lymphatic microfilariae was observed. But the localization of the microfilariae was slightly different: the mean distances between the microfilariae and the border of the basement membrane of the epidermis was approximately 115 microns in the forest and 138 microns in the savanna. Statistical analysis showed that the forest microfilariae were in the superficial parts of the dermis when the densities were low and in deep parts of the dermis when the densities were high. In the savanna, the phenomenon, although less clearly defined was reverse. The two situations were inverted when the density of microfilariae reached approximately 51 microfilariae per calibrated snip, which was seldom the case. Therefore, the most cases, microfilariae appeared to have been more superficial in the forest than the savanna.

Adolescent↗
PubMed1987

Infection of roe-deer in France by the lung nematode, Dictyocaulus eckerti Skrjabin, 1931 (Trichostrongyloidea): influence of environmental factors and host density.

The prevalence of the lungworm, Dictyocaulus eckerti, was studied in a sample of 603 roe-deer (Capreolus capreolus) in the Rhone district of France. The mean prevalence of infection (17%) in deer in a given area fluctuated according to the percentage of the area covered with forest, or lake and river. The density of roe-deer or domestic ruminants, the type of forest and the maximum elevation of the site were not related to the prevalence of infection.

Animals↗
PubMed1986

Comparative susceptibility of Romanov and Lacaune sheep to gastrointestinal nematodes and small lungworms.

The susceptibility of Romanov and Lacaune sheep to nematode parasites was studied in a permanent flock grazing an extensive pasture. The output of strongyle eggs and protostrongyle larvae was higher in Romanov ewes. Faecal samples of the Romanov ewes more often harboured Nematodirus eggs while the larvae recovered from cultures of these samples contained a higher percentage of Teladorsagia. Romanov tracer lambs had a significantly heavier adult Teladorsagia burden. This higher natural susceptibility of the Romanov breed was confirmed by experimental infections with T. circumcincta and N. spathiger but not with Trichostrongylus colubriformis. In infections with Muellerius capillaris and Protostrongylus rufescens, the worm burdens were similar but parasite fertility (larvae per adult) seemed to be higher in Romanov tracer lambs.

Animals↗
PubMed1986

[Relation between Muellerius capillaris infestation of molluscan intermediary hosts and of goats in Touraine].

32 dairy-goat farms of Touraine were investigated for Muellerius capillaris infection. Faecal and Molluscs samples were collected in Spring and Autumn. The factors of risk for goat were the abundance of Helix aspersa in Spring and of Deroceras reticulatum in Autumn. The infestivity of pasture was related to the infection of goat in Spring but not in Autumn. The faecal larval output in goats depended on the breed of goat at both periods; environmental factors were also of importance.

Animals↗
PubMed1986

The use of tracer lambs for monitoring protostrongylid infection on extension pastures of Morroco.

Three tracer lambs were grazed each month from December 1979 to September 1980 on pastures infected by Muellerius capillaris. At slaughter, the lesions on the lungs and the parasite population in lungs and jejunal, mediastinal and bronchial lymph nodes were examined. The density and infection of the malacofauna were also recorded. The infection of slugs reached a maximum in February-March, and that of sheep in April-May. The internal life-cycle was characterized by the long duration of third-stage larvae in lymph node. It is postulated that infection of sheep was mainly due to the ingestion of larvae liberated onto the grass after the death of slugs.

Animals↗
PubMed1985

The distribution and abundance of parasitic infections in sheep grazing on irrigated or on non-irrigated pastures in North-Eastern Spain.

The parasitic output in faeces was studied in five sheep farms of Zaragoza area (Spain) during three years. Two of them utilized irrigated pastures. The latter were characterized by a high prevalence of Dicrocoelium lanceolatum, Fasciola hepatica and Protostrongylids. Flood-irrigation did not interfere with digestive-tract strongyles and did not favour Moniezia sp. infection. The heterogeneity of the parasitic output was more intense on irrigated pastures.

Animal Feed↗
PubMed1984

Seasonal changes in the abomasal nematodes of naturally infected ewes in Moulay-Bouazza (Morocco).

The nematode populations of 93 abomasa of ewes from Middle-Atlas (Morocco) were studied over a period of 3 years. The main species present were Ostertagia circumcincta, Marshallagia marshalli, Trichostrongylus axei and T. vitrinus; less frequent species were O. ostertagi and O. trifurcata. Two peaks of infection were recorded, 1 at the end of winter or the beginning of spring (February--March), and another in autumn (September). The first population peak consisted mostly of O. circumcincta and T. axei, and the second population peak, in autumn, had a high prevalence of M. marshalli and T. vitrinus.

Abomasum↗
PubMed1984

[Reinfection of molluscs by protostrongylids : phenomena of limitation and facilitation].

Land-snails (Otala lactea, Theba pisana, Cochlicella ventricosa and C. conoidea) previously infected experimentally by protostrongylids were reinfected at different time-lags, from one day to 126 days. The efficacy of daily reinfections was nil. The susceptibility of all species of snails was lowered for reinfection at short time-lags (up to 15 days) and enhanced for long time lags (over 21 days). The former phenomenon was called limitation and the latter, facilitation. It is suggested that limitation is related to the survival of penetrated first-stage larvae and that facilitation is induced by a better penetration of first-stage larvae.

Animals↗