PMID- 11744227 OWN - NLM STAT- MEDLINE DCOM- 20020227 LR - 20190701 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 316 IP - 3 DP - 2001 Dec 28 TI - Unipolar brush cells in the human cochlear nuclei identified by their expression of a metabotropic glutamate receptor (mGluR2/3). PG - 161-4 AB - Unipolar brush cells (UBCs) reside in the mammalian vestibulo-cerebellum and the ventral (VCN) and, particularly, dorsal cochlear nuclei (DCN). Human cerebellar UBCs are numerous too, but auditory UBCs have escaped detection. The human DCN, considered a degenerated structure, lost lamination and possibly neurons common in lower mammals, like UBCs. We searched for human auditory UBCs probing their immunoreactivity against the calcium-binding protein calretinin (CR-IR), and a metabotropic glutamate receptor (mGluR2/3-IR). We found: UBCs are constituents of the human DCN and VCN, though in small numbers. These auditory UBCs are not CR-IR, in contrast to human cerebellar UBCs and cerebellar and auditory UBCs in non-primate mammals, but display mGluR2/3-IR. The human DCN, thus, appears more complete than previously thought. This may be of interest regarding auditory brainstem electrode implantations in deaf patients. FAU - Spatz, W B AU - Spatz WB AD - Morphological Brain Research, Department of Oto-Rhino-Laryngology, University of Freiburg, Killianstrasse 5, 79106 Freiburg, Germany. spatz@hno1.ukl.uni-freiburg.de LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Receptors, Metabotropic Glutamate) RN - 0 (metabotropic glutamate receptor 2) RN - 0 (metabotropic glutamate receptor 3) RN - 3KX376GY7L (Glutamic Acid) SB - IM MH - Adult MH - Auditory Perception/*physiology MH - Cell Size/physiology MH - Cochlear Nucleus/*cytology/*metabolism MH - Dendrites/metabolism/ultrastructure MH - Glutamic Acid/metabolism MH - Humans MH - Immunohistochemistry MH - Male MH - Neural Pathways/physiology MH - Neurons/*cytology/*metabolism MH - Receptors, Metabotropic Glutamate/*metabolism MH - Synaptic Transmission/physiology EDAT- 2001/12/18 10:00 MHDA- 2002/03/19 10:01 CRDT- 2001/12/18 10:00 PHST- 2001/12/18 10:00 [pubmed] PHST- 2002/03/19 10:01 [medline] PHST- 2001/12/18 10:00 [entrez] AID - S0304394001023928 [pii] AID - 10.1016/s0304-3940(01)02392-8 [doi] PST - ppublish SO - Neurosci Lett. 2001 Dec 28;316(3):161-4. doi: 10.1016/s0304-3940(01)02392-8.