Showing papers in "Acta Tropica in 1985"

TL;DR: The results show the possibility of obtaining tissue lesions with antigenic preparations of T. cruzi in the absence of infection, and suggest that the mechanisms involved in the generation of myocarditis and electrocardiographic alterations are probably different, since these pathologies can be elicited by different subcellular fractions.

TL;DR: A snail survey in various parts of the Senegal River Basin, including the SenegalRiver Basin, temporary rain-fed pools, swamps, irrigation canals and drains, ricefields and Lac de Guier was carried out, finding Bulinus guernei was the most common, occurring in permanent habitats, and Bulinus senegalensis occurring in laterite pools in the eastern part of the Middle Valley.

TL;DR: In a single fish, ciguatoxin was found in the blood, flesh, gonads, gills, heart, skin and bones, the concentration was highest in the viscera and in particular in the liver, kidney and spleen.

TL;DR: A longitudinal study in a guinea savanna area in Northern Nigeria showed that indoor resting samples consisted almost entirely of An.

TL;DR: The ecology of Bulinus globosus was studied in 8 habitats in two streams near Ifakara, SE-Tanzania and it was revealed that pH, temperature and conductivity had little effect on the Bulinus population, as they oscillated within the tolerated limits.

TL;DR: Evidence at present available suggests that trypanotolerant cattle are more likely to be an economic alternative to drug-treated zebu at higher rather than lower challenge levels, and whether either type of animal could profitably be raised in areas of the highest challenge and without some form of tsetse control remains an open question.

TL;DR: It was found that it was possible to grow and maintain several different developmental stages of T. congolense by varying culture conditions.

TL;DR: It is shown here that whereas mouse anti-T.

TL;DR: A 34-year-old native women presented as an acute abdominal emergency at the Surgery Department, Missionary Hospital "Ad Lucem" in Banka-Bafang, Cameroon, with complaints of colicky, epigastric abdominal pain, nausea, vomiting, constipation, and retention of flatus.

TL;DR: Response of the chicken to liver feeding was roughly quantitative; so liver, which is the most potential toxic tissue, may be used for a preventive screening test in ciguatera-endemic areas.

TL;DR: Electrophoretic analysis of the genetic structure of three Onchocerca volvulus populations from Mali, Ivory Coast, and Zaire has shown remarkable genetic heterogeneity existing within O.volvulus.

TL;DR: The viability of a hybrid between male Schistosoma haematobium and female S. intercalatum was studied for up to the F7 hybrid generation and the biological characteristics of the hybrid were compared with those of each of the parental species.

TL;DR: This work suggests that viable adult B. malayi exert direct pathologic effects upon lymphatics and that this parasite is more pathogenic than related Brugia spp.

TL;DR: Bloodstream form trypomastigotes of four cloned stocks of Trypanosoma congolense from West Africa were successfully adapted to continuous in vitro culture and induced local skin reactions in rabbits and were designated "mammalian forms", possibly resembling parasites which develop extravascularly in the vertebrate host following introduction of metacyclic trypanosomes into the skin by bites of tsetse flies.

TL;DR: A chemically defined medium to grow the promastigotes of 19 stocks of Leishmania is described, developed by making qualitative and quantitative modifications of the medium AR-103 devised for Trypanosoma cruzi.

TL;DR: A cross sectional survey for Schistosoma haematobium infections was undertaken in 12 primary schools in the city of Dar es Salaam, and laboratory and field findings confirmed that these two species were vectors of S. haem atobium.

TL;DR: The results indicate that these nematode L3 activate the alternative complement cascade via cuticular surface components through cuticle binding of IgG, IgA, IgM, Clq, or C4 through the C3 pathway.

TL;DR: The probability of tsetse, Glossina pallidipes, acquiring a trypanosome infection from a single blood meal was estimated in five localities on the Kenya coast which were selected for differences in habitat and host availability.

TL;DR: Both the reproducibility and the high sensitivity to drugs of the system make this assay a valuable technique for chemotherapeutic studies on trypanosomes.

TL;DR: It is demonstrated that numerous T. cruzi polypeptides rapidly become adsorbed to mammalian cells in tissue culture and no indication that the binding of the polypeptic was mediated by the specific binding of any one protein is found.

TL;DR: Skin scrapings from the experimental lesions in donkeys contained numerous mites of all stages and skin sections showed severe histopathological changes, proving that the goat mites had become well established and were reproducing actively in experimental lesions.

TL;DR: The aqueous extract of the root of Salvia haematodes has been investigated for its pharmacological actions on the cardiovascular and central nervous system and was found to possess significant cardiotonic and anticonvulsant activities.

TL;DR: Comparison of lungs and intestines revealed the intestine as the seat of resistance against the establishment of N. americanus in young adult hamsters.

TL;DR: It is emphasized that physicians in Nigeria should consider toxoplasmosis in the differential diagnosis of peripheral lymphadenopathy and the habit of bare-foot walking leading to repeated trauma and infection is implicated in the high incidence of inguinal node reactive hyperplasia.

TL;DR: These methods provide a significant improvement of sensitivity for Isometamidium over existing analytical procedures and represent new methods for analysis of Homidium and Quinapyramine.

TL;DR: Results indicate that the genotype of the fly, exemplified by the allele salmon, might influence the development of T. congolense in G.m. morsitans.

TL;DR: Trypanosoma cruzi amastigotes were isolated from liver and spleen of previously infected mice and purified in discontinuous gradients of Metrizamide and Percoll and infective for mice but the onset of parasitemia was somewhat delayed and less intense when compared to mice infected with trypomastigote.

TL;DR: The results suggest that parasite selection by insect passage modulates infectivity of a given parasite population; however, virulence was independent of the absolute number of Mtc in the insect's feces.