Linked Life Data

8213072

Source:http://linkedlifedata.com/resource/pubmed/id/8213072

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1993-11-23
pubmed:abstractText
An autopsy case of severe peripheral facial nerve paresis with disconnection of synapses from facial motor neurons is reported. A 77-year-old man presented with left-sided otitis media and subsequent development of facial nerve paresis. Three months later, the patient died of an acute gastrointestinal bleeding from a chronic duodenal ulcer. Gross inspection of the brain revealed non-stenosing arteriosclerotic vascular changes and a single small cystic lesion in the right putamen. Microscopically, marked chromatolytic changes were observed in the left facial nucleus. Immunocytochemistry for synaptophysin revealed a marked loss of afferent synaptic contacts from somatic and stem dendritic surface membranes of all chromatolytic motor neurons. Wrapping of a number of neurons by newly formed glial fibrillary acidic protein-positive astrocytic cell processes could be detected in the regenerating facial motor nucleus. In addition, expression of HLA-DR was increased on a small number of microglia and perivascular cells. These changes were absent from the contralateral, normal-appearing facial nucleus. To our knowledge, this case provides the first evidence for disconnection of synapses following peripheral nerve lesioning in humans. Occurrence of synaptic stripping is likely to explain nuclear hyperexcitability and failure of recovery of complex fine motor movements that are commonly observed following peripheral injury to the facial nerve.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0001-6322
pubmed:author
pubmed:issnType
Print
pubmed:volume
86
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
179-81
pubmed:dateRevised
2007-11-9
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Synaptic stripping in the human facial nucleus.
pubmed:affiliation
Institute of Neuropathology, Ludwig Maximilians University, Munich, Germany.
pubmed:publicationType
Journal Article, Case Reports