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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
3
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pubmed:dateCreated |
1982-1-20
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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.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adrenergic beta-Agonists,
http://linkedlifedata.com/resource/pubmed/chemical/Alprenolol,
http://linkedlifedata.com/resource/pubmed/chemical/Oxprenolol,
http://linkedlifedata.com/resource/pubmed/chemical/Practolol,
http://linkedlifedata.com/resource/pubmed/chemical/Propranolol,
http://linkedlifedata.com/resource/pubmed/chemical/Timolol
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pubmed:status |
MEDLINE
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pubmed:issn |
0065-6100
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
217
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
167-74
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pubmed:dateRevised |
2009-11-11
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pubmed:meshHeading |
pubmed-meshheading:6118072-Administration, Topical,
pubmed-meshheading:6118072-Adrenergic beta-Agonists,
pubmed-meshheading:6118072-Alprenolol,
pubmed-meshheading:6118072-Animals,
pubmed-meshheading:6118072-Aqueous Humor,
pubmed-meshheading:6118072-Chromatography, Gas,
pubmed-meshheading:6118072-Oxprenolol,
pubmed-meshheading:6118072-Practolol,
pubmed-meshheading:6118072-Propranolol,
pubmed-meshheading:6118072-Rabbits,
pubmed-meshheading:6118072-Timolol
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pubmed:year |
1981
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pubmed:articleTitle |
Penetration of five beta-adrenergic antagonists into the rabbit eye after ocular instillation.
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pubmed:publicationType |
Journal Article
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