The neuropeptide schistosomin and haemolymph from parasitized snails induce similar changes in excitability in neuroendocrine cells controlling reproduction and growth in a freshwater snail

作者: Peter L. Hordijk , M. de Jong-Brink , A. ter Maat , A.W. Pieneman , J.C. Lodder

DOI: 10.1016/0304-3940(92)90047-B

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摘要: Infection of the snail Lymnaea stagnalis with schistosome parasite Trichobilharzia ocellata results in inhibition reproduction and giant growth. Parasite-related effects on neuroendocrine centres that control these processes were studied electrophysiologically. Haemolymph from infected snails reduced excitability caudodorsal cells, which egg laying. In contrast, growth-controlling Light Green Cells was increased under conditions. The endogenous anti-gonadotropic neuropeptide schistosomin, presence is strongly enhanced parasitized snails, induced similar effects. Schistosomin apparently plays an important role balance between growth Lymnaea. This severely disturbed during parasitic infection, probably as a result release peptide.

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