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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1982-1-20
pubmed:abstractText
Aqueous humor and serum levels of five beta-adrenergic blockers were measured using gas chromatographic techniques following ocular instillation of 1% solutions to rabbits. Octanol/buffer partition ratios were also determined. No apparent relationship was found between the peak levels of the agents in aqueous humor and their octanol/buffer partition ratios. However, peak aqueous humor levels of timolol (461 ng/100 mg) and practolol (919 ng/100 mg), whose partition ratios were less than unity, occurred somewhat later (1 h) than the peaks of propranolol (859 ng/100 mg at 30 min), oxprenolol (1,771 ng/100 mg at 30 min) or alprenolol (1,004 ng/100 mg at 10 min) whose partition ratios exceeded unity. Peak levels in serum of timolol (8.0 ng/100 microliter), propranolol (4.2 ng/100 microliter), oxprenolol (11.5 ng/100 microliter), and alprenolol (4.5 ng/100 microliter) were achieved within 10 min and reduced to less than 15% within 4 h. Peak serum levels of practolol (9.9 ng/100 microliter) occurred somewhat later (2 h) and remained high (41%) 6 h later.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0065-6100
pubmed:author
pubmed:issnType
Print
pubmed:volume
217
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
167-74
pubmed:dateRevised
2009-11-11
pubmed:meshHeading
pubmed:year
1981
pubmed:articleTitle
Penetration of five beta-adrenergic antagonists into the rabbit eye after ocular instillation.
pubmed:publicationType
Journal Article