Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1992-12-22
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.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0721-832X
pubmed:author
pubmed:issnType
Print
pubmed:volume
230
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
575-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1992
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.
pubmed:affiliation
University of California, San Francisco Medical Center.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't