Summary
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1.
The presence of insulin-like substances has been demonstrated by immunocytochemistry in the central nervous system of the snailHelix aspersa.
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2.
The immunopositivity has been observed especially in the large perikarya of the mesocerebral green cells [the cerebral green cells (CeGC) stained in green by the alcian blue: alcian yellow technique].
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3.
The removal of either the mesocerebrum or the CeGC stops the growth of the snail and induces the increase of the glycogen content in the mantle edge.
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4.
Our results show the existence of insulin-like material in the neurosecretory cells. Previous data having demonstrated the presence of specific binding sites to insulin in the cephalic ganglia ofHelix aspersa, one may suggest that insulin could play a neuromodulatory or a neurotransmittory role in the central nervous system and might control the growth.
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Gomot, A., Gomot, L., Marchand, C.R. et al. Immunocytochemical localization of insulin-related peptide(s) in the central nervous system of the snailHelix aspersa müller: Involvement in growth control. Cell Mol Neurobiol 12, 21–32 (1992). https://doi.org/10.1007/BF00711636
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DOI: https://doi.org/10.1007/BF00711636