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Predicate | Object |
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rdf:type | |
lifeskim:mentions |
umls-concept:C0011164,
umls-concept:C0013852,
umls-concept:C0014563,
umls-concept:C0022077,
umls-concept:C0027747,
umls-concept:C0028351,
umls-concept:C0034693,
umls-concept:C0034721,
umls-concept:C0040300,
umls-concept:C0058415,
umls-concept:C0205191,
umls-concept:C0332237,
umls-concept:C0369671,
umls-concept:C0392762,
umls-concept:C0441889,
umls-concept:C1441672,
umls-concept:C1522168,
umls-concept:C1707455
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pubmed:issue |
6
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pubmed:dateCreated |
1992-12-22
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pubmed:abstractText |
This is the first report of nerve terminal degeneration within the iris following topical dipivalyl epinephrine 0.1% treatment. A quantitative comparison of the effects of topically applied epinephrine 2%, dipivalyl epinephrine 0.1%, and placebo vehicle on the nerve terminals within the iris of a rat was made using electron microscopy and a catecholamine radioenzyme assay. Thirty-nine rats were divided into these 3 treatment groups and treated for 10 weeks, after which they were killed and studied. Both the epinephrine 2%- and dipivalyl epinephrine 0.1%-treated groups showed greater nerve terminal degeneration compared with the placebo-treated group (P < 0.05). The epinephrine-treated group showed greater nerve terminal degeneration than the dipivalyl epinephrine-treated group. The clinical significance of these observations is unknown. It is impossible to decide whether these degenerative changes are related unavoidably to a desired therapeutic effect or to an undesirable, potentially avoidable, toxic side effect.
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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:issn |
0721-832X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
230
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
575-9
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1427143-Animals,
pubmed-meshheading:1427143-Epinephrine,
pubmed-meshheading:1427143-Iris,
pubmed-meshheading:1427143-Male,
pubmed-meshheading:1427143-Nerve Degeneration,
pubmed-meshheading:1427143-Nerve Endings,
pubmed-meshheading:1427143-Norepinephrine,
pubmed-meshheading:1427143-Rats,
pubmed-meshheading:1427143-Rats, Sprague-Dawley
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pubmed:year |
1992
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pubmed:articleTitle |
Nerve terminal degeneration in the rat iris observed following chronic topical 2% epinephrine and 0.1% dipivalyl epinephrine: a quantitative comparison of electron microscopic observations and tissue norepinephrine levels.
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pubmed:affiliation |
University of California, San Francisco Medical Center.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
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