Linked Life Data

7517435

Source:http://linkedlifedata.com/resource/pubmed/id/7517435

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1994-8-4
pubmed:abstractText
The adult rat superior cervical ganglion (SCG) contains low levels of galanin- and vasoactive intestinal peptide-(VIP) like immunoreactivity, with very few immunostained principal neurons. Immunoreactivity for both neuropeptides increases in these neurons after explantation or postganglionic axotomy in vivo. Northern blot analysis has demonstrated concomitant increases in mRNAs encoding these peptides. To localize cells in axotomized ganglia which increase their expression of these mRNAs, we performed in situ hybridization studies. In control SCG, only a few principal neurons contained mRNA for either galanin or VIP. After 48 h in organ culture, galanin mRNA was expressed in the majority of principal neurons. At 48 h after in vivo axotomy of both postganglionic trunks of the SCG, the internal and external carotid nerves, the distribution and number of neurons, expressing galanin mRNA increased similarly to that seen in culture. Lesioning either trunk alone produced increases in galanin mRNA localized to those regions of the ganglion containing neurons that project into the lesioned trunk. Transection of the predominantly preganglionic cervical sympathetic trunk increased galanin mRNA expression in a small population of neurons near that nerve trunk. The distributions of these labeled neurons, together with previous neuroanatomical studies, suggests that they had been axotomized by the lesions. Similar studies examining VIP mRNA expression demonstrated that although considerably fewer VIP mRNA expressing neurons than galanin mRNA expressing neurons were present after axotomy, the distribution of neuropeptide mRNA-positive cells were similar in both cases. These observations suggest that increases in the peptides galanin and VIP after nerve transection result from changes in the levels of their mRNAs in those neurons that have been axotomized.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0022-3034
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
108-18
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Galanin and vasoactive intestinal peptide messenger RNAs increase following axotomy of adult sympathetic neurons.
pubmed:affiliation
Department of Neurosciences, Case Western Reserve University, School of Medicine, Cleveland, Ohio 44106.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.