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  Miracidial host-finding in Fasciola hepatica and Trichobilharzia ocellata is stimulated by species-specific glycoconjugates released from the host snails

Kalbe, M., Haberl, B., & Haas, W. (1997). Miracidial host-finding in Fasciola hepatica and Trichobilharzia ocellata is stimulated by species-specific glycoconjugates released from the host snails. Parasitology Research, 83(8), 806-812. doi:10.1007/s004360050344.

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Kalbe, M.1, Autor           
Haberl, B.2, Autor
Haas, W.2, Autor
Affiliations:
1External, ou_persistent22              
2external, ou_persistent22              

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 Zusammenfassung: The miracidia of Fasciola hepatica and Trichobilharzia ocellata approach their host snails Lymnaea truncatula and L. stagnalis by increasing their rate of change of direction (RCD) in increasing gradients of snail-conditioned water (SCW), and they perform a turnback swimming in decreasing gradients. Both host-finding responses in both species were induced by glycoconjugates with a molecular weight of > 30 kDa that were sensitive to hydrolysis with pronase E and oxidation with NalO(4). Alkaline cleavage revealed that they contained carbohydrates linked O-glycosidically via serine and N-acetylgalactosamine. Miracidia clearly preferred SCW from their specific host snail versus other sympatric snail species and did not respond to water conditioned with fish, tadpoles, or leeches. Differences in the chemical characteristics of SCW from the intermediate hosts L. truncatula and L. stagnalis could be shown by sodium dodecyl sulfate-polyacrylamide gel electrophoresis, blotting. and subsequent carbohydrate detection. The first step of purification of the effective signaling SCW components from both snail species was achieved by ion-exchange chromatography.

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 Datum: 1997-101997-10
 Publikationsstatus: Erschienen
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 Art der Begutachtung: -
 Identifikatoren: ISI: A1997XY13100012
DOI: 10.1007/s004360050344
 Art des Abschluß: -

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Titel: Parasitology Research
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Berlin : Springer International
Seiten: - Band / Heft: 83 (8) Artikelnummer: - Start- / Endseite: 806 - 812 Identifikator: ISSN: 0932-0113 (print)
ISSN: 1432-1955 (online)
CoNE: https://pure.mpg.de/cone/journals/resource/954927704141