Parasitology

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ABC transporters and β-tubulin in macrocyclic lactone resistance: prospects for marker development
Parasitology - Tập 134 Số 8 - Trang 1123-1132 - 2007
Roger K. Prichard, Alain Roulet
SUMMARYMacrocyclic lactones (MLs) are highly lipophilic anthelmintics which are known to bind to and open ligand-gated ion channels. However, these anthelmintics, and particularly the avermectin members of the ML class of endectocides, are potent substrates for ABC transporters and these transporters may regulate drug concentration in both the host and the parasite...... hiện toàn bộ
Morphological effects and tegumental alterations induced by mefloquine on schistosomula and adult flukes ofSchistosoma mansoni
Parasitology - Tập 137 Số 1 - Trang 85-98 - 2010
Theresia Manneck, Yolanda Haggenmüller, Jennifer Keiser
SUMMARYThere is a pressing need to develop novel anti-schistosomal drugs, as current treatment relies largely on praziquantel (PZQ). To further strengthen current evidence of the anti-schistosomal properties of mefloquine (MQ), we studied the temporal effect of this compoundin vitroandin vivo, and examined alter...... hiện toàn bộ
Toxoplasmosis in prey species and consequences for prevalence in feral cats: not all prey species are equal
Parasitology - Tập 134 Số 14 - Trang 1963-1971 - 2007
Eve Afonso, P. Thulliez, Dominique Pontier, Emmanuelle Gilot‐Fromont
SUMMARYToxoplasma gondiiis largely transmitted to definitive felid hosts through predation. Not all prey species represent identical risks of infection for cats because of differences in prey susceptibility, exposure and/or lifespan. Previously published studies have shown that prevalence in rodent and lagomorph species is positively corr...... hiện toàn bộ
Neurosecretory granules in the infective stage of Haemonchus contortus
Parasitology - Tập 58 Số 3 - Trang 657-662 - 1968
W. P. Rogers
Large numbers of electron-dense bodies, 700–1900 Å in diameter, usually seen each with its own limiting membrane, were found in axons of the ventral nerve of infective juveniles of H. contortus. Axons containing these granules merged, without limiting membranes, with a ‘light’, diffusely granular region, about 1·5–2 μm3. The ‘light’ area also...... hiện toàn bộ
Habitat fragmentation and haemoparasites in the common fruit bat,Artibeus jamaicensis(Phyllostomidae) in a tropical lowland forest in Panamá
Parasitology - Tập 136 Số 10 - Trang 1133-1145 - 2009
Veronika M. Cottontail, Nele Wellinghausen, Elisabeth K. V. Kalko
SUMMARYAnthropogenic influence on ecosystems, such as habitat fragmentation, impacts species diversity and interactions. There is growing evidence that degradation of habitats favours disease and hence affects ecosystem health. The prevalence of haemoparasites in the Common Fruit Bat (Artibeus jamaicensis) in a tropical lowland forest in ...... hiện toàn bộ
The structure of the cuticle ofAscaris lumbricoidesvar.suis
Parasitology - Tập 47 Số 3-4 - Trang 319-328 - 1957
Alan F. Bird, Karl W. Deutsch
1. Nine layers have been identified in the cuticle ofAscaris lumbricoidesvar.suisunder the light microscope and their nomenclature is identical with that of van Bömmel.2. The inner cortical layer consists of a distinct structure which is seen to be markedly different from the homogeneous layer when fresh frozen sections...... hiện toàn bộ
The cuticle of adultNippostrongylus brasiliensis
Parasitology - Tập 55 Số 1 - Trang 173-181 - 1965
D. L. Lee
The cuticle of adults ofNippostrongylus brasiliensishas been described using histological, histochemical and ultrastructural techniques.The cuticle has the following layers: an outer triple-layered membrane; a single cortical layer; a fluid-filled layer which is traversed by numerous collagen fibrils; struts which support the fourteen longitudina...... hiện toàn bộ
Further observations on the structure of nematode cuticle
Parasitology - Tập 48 Số 1-2 - Trang 32-37 - 1958
Alan F. Bird
1. An examination of the cuticle ofOxyuris equihas revealed the presence of previously unidentified structures. The layers of the cuticle of this nematode have been renamed.2. The cuticle ofStrongylus equinushas been examined in a similar fashion and, whilst the basic nomenclature of the various layers has been retained...... hiện toàn bộ
Specificity of carbohydrate transport inTrypanosoma equiperdum
Parasitology - Tập 68 Số 2 - Trang 103-115 - 1974
M. D. Ruff, Clark P. Read
Trypanosoma equiperdumwas found to take up glucose, mannose, fructose and glycerol but not galactose. Data with inhibitors suggested that the absorption of these compounds occurred by mediated processes. The inhibitory activity of various compounds indicated that three separate sites were involved in transport, two for glycerol and one for the hexoses.
Distribution of schistosome genetic diversity within molluscan intermediate hosts
Parasitology - Tập 111 Số 2 - Trang 217-220 - 1995
Dennis J. Minchella, Kathy M. Sollenberger, Cecília Pereira de Souza
SUMMARYNaturally infected Biomphalaria glabrata snails were collected at two sites near Belo Horizonte, Brazil, and Schistosoma mansoni cercariae isolated from single snails were used to infect individual mice. Genetic comparison of single worm DNA was accomplished by hybridization of Southern blots to a polymor...... hiện toàn bộ
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