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  • Title: Cloning of human neurotensin/neuromedin N genomic sequences and expression in the ventral mesencephalon of schizophrenics and age/sex matched controls.
    Author: Bean AJ, Dagerlind A, Hökfelt T, Dobner PR.
    Journal: Neuroscience; 1992 Sep; 50(2):259-68. PubMed ID: 1436492.
    Abstract:
    A human genomic clone encompassing exons 1-3 of the neurotensin/neuromedin N gene was identified using a canine neurotensin complementary DNA probe. Sequence comparisons revealed that the 120-amino acid portion of the precursor sequence encoded by exons 1-3 is 89% identical to previously determined cow and dog sequences and that the proximal 250 bp of 5' flanking sequences are strikingly conserved between rat and human. The 5' flanking sequence contains cis-regulatory sites required for the induction of neurotensin/neuromedin N gene expression in PC12 cells, including AP1 sites and two cyclic adenosine-5'-monophosphate response elements. Oligonucleotide probes based on the human sequence were used to examine the distribution of neurotensin/neuromedin N messenger RNA in the ventral mesencephalon of schizophrenics and age- and sex-matched controls. Neurotensin/neuromedin N messenger RNA was observed in ventral mesencephalic cells some of which also contained melanin pigment or tyrosine hydroxylase messenger RNA. Neurons expressing neurotensin/neuromedin N messenger RNA were observed in the ventral mesencephalon of both schizophrenic and non-schizophrenic humans.
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