perisinusoidal liver cells |
perisynaptic Schwann cells |
Complement C1q |
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This sulfated peptide (Glu-Gln-Phe H-Asp-Asp-Tyr(SO3H)-Gly-His-Met-Arg-Pheamide; EQFDDYGHMRFamide), which is also being referred to as Sulfakinin-1, has been isolated from the corpora cardiaca of the American cockroach, Periplaneta americana. These peptides belong to a class of neuropeptides structurally and functionally similar to the vertebrate brain-gut peptides cholecystokinin / gastrin (see: sulfakinins).
Perisulfakinin induces hindgut contractions in the same species from which it was isolated (Veenstra, 1989). A second, non-sulfated peptide has been shown to be identical with one of the leucosulfakinins (
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