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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1981-8-20
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pubmed:abstractText |
The effects of stimulating alpha-adrenergic receptors in the iris of neonatal rats (up to 30 days of age) whose superior cervical ganglion (SCG) has been decentralized or extirpated 3 days after birth were investigated by measuring changes in pupil diameter. The responses of these experimental animals were compared with those of normal animals of similar age. Alpha-adrenergic stimulation was effected by topical application of noradrenaline (NA) after blockade of beta-adrenoceptors with dichlorisoproterenol and cholinoceptors with atropine. The results reveal that although decentralization of the SCG depletes the NA content of the ipsilateral iris as demonstrated by radio-chemical assay and formaldehyde-induced fluorescence, it does not affect the development of alpha-adrenoceptor responsiveness. Even the more severe disruption of the innervation caused by extirpation of the SCG did not affect the responsiveness of the ipsilateral iris.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
May
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pubmed:issn |
0006-8993
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
25
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pubmed:volume |
213
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
119-26
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:6263407-Aging,
pubmed-meshheading:6263407-Animals,
pubmed-meshheading:6263407-Animals, Newborn,
pubmed-meshheading:6263407-Brain,
pubmed-meshheading:6263407-Female,
pubmed-meshheading:6263407-Ganglia, Sympathetic,
pubmed-meshheading:6263407-Iris,
pubmed-meshheading:6263407-Male,
pubmed-meshheading:6263407-Microscopy, Fluorescence,
pubmed-meshheading:6263407-Pupil,
pubmed-meshheading:6263407-Rats,
pubmed-meshheading:6263407-Receptors, Adrenergic,
pubmed-meshheading:6263407-Receptors, Adrenergic, alpha
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pubmed:year |
1981
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pubmed:articleTitle |
Differentiation of alpha-adrenergic responsiveness in the neonatal rat iris after decentralization or extirpation of the superior cervical ganglion.
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pubmed:publicationType |
Journal Article
|