Journal
NEUROSCIENCE LETTERS
Volume 305, Issue 1, Pages 9-12Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0304-3940(01)01804-3
Keywords
abducens nucleus; choline acetyltransferase; facial motor nucleus; hypoglossal nucleus; nucleus ambiguus; trigeminal motor nucleus; ventral horn motoneurons
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Funding
- NHLBI NIH HHS [HL51314] Funding Source: Medline
- NINDS NIH HHS [NS18710, NS39646] Funding Source: Medline
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The distribution of urotensin-II-immunoreactivity (irU-II) was studied in the rat brainstem and spinal cord with the use of an antiserum against the human urotensin II (U-II) peptide. A population of ventral horn neurons in the spinal cord, hypoglossal nucleus, dorsal motor nucleus of the vagus, facial motor nucleus, nucleus ambiguus, abducens nucleus and trigeminal motor nucleus exhibited irU-II of varying intensities. The number of irU-II motor neurons was higher in the lumbar segments as compared to that of cervical, thoracic and sacral segments. Double-labeling the sections with U-II-and choline acetyltransferase (ChAT)-antisera revealed that nearly all irU-ll ventral horn and brainstem neurons were ChAT-positive. The result provides the first immunohistochemical evidence of the presence of irU-II in cholinergic motoneurons of the rat spinal cord and brainstem. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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