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  • Title: Immunohistochemical colocalization of delta sleep-inducing peptide and luteinizing hormone-releasing hormone in rabbit brain neurons.
    Author: Charnay Y, Bouras C, Vallet PG, Golaz J, Guntern R, Constantinidis J.
    Journal: Neuroscience; 1989; 31(2):495-505. PubMed ID: 2677829.
    Abstract:
    The anatomical distributions of luteinizing hormone-releasing hormone and delta sleep-inducing peptide immunoreactivity in the rabbit brain were studied by indirect immunofluorescence technique. The comparison of adjacent serial sections, one being immunolabeled with an antiserum to luteinizing hormone-releasing hormone, the other with an antiserum to delta sleep-inducing peptide, showed that the respective distribution patterns of immunoreactivity exhibited a remarkable overlap through the basal forebrain and hypothalamic regions. A sequential double-immunolabelling (elution-restaining method) clearly indicated that all the luteinizing hormone-releasing hormone-immunoreactive cell bodies displayed delta sleep-inducing peptide immunoreactivity. These cell bodies were sparse and mainly located throughout the septal-preoptico-suprachiasmatic region and the ventrolateral hypothalamus. The colocalization of luteinizing hormone-releasing hormone and delta sleep-inducing peptide immunoreactivity was also observed in many fibres supplying all these brain regions and terminal areas such as the organum vasculosum of the lamina terminalis, the subfornical organ, the median eminence and the pituitary stalk. These neuroanatomical findings are suggestive of interaction between delta sleep-inducing peptide and luteinizing hormone-releasing hormone in various brain areas including some circumventricular organs.
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