Linked Life Data

7975719

Source:http://linkedlifedata.com/resource/pubmed/id/7975719

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1994-12-8
pubmed:abstractText
1. The disposition of the new fluorinated, biocompatible, non-ionic telomeric carrier trisacryl conjugate (F-TAC) labelled with 13C and 14C on the amide function has been studied in the rat after p.o. and i.v. administration. 2. After i.v. administration, excretion measurements have shown that radioactivity was eliminated mainly in the urine (69% within 24 h), and that faecal excretion was low (8% within 72 h). After p.o. administration, faecal elimination was significantly increased (30% within 72 h). No radioactivity was eliminated as 14CO2, after either route of administration. 3. After i.v. administration, plasma radioactivity exhibited a biphasic decrease, with t1/2 = 20 min for the first phase and 29.5 h for the second phase. The maximal plasma concentration was obtained 40 min after oral dosing, followed by a monoexponential decrease with t1/2 = 38.1 h. The ratio AUC (p.o.)/AUC (i.v.) as an assessment of bioavailability was 0.22. 4. After both i.v. and p.o. administration, a relatively homogeneous concentration of radioactivity was found in most organs, close or below the plasma concentration, indicating that tissues do not exhibit a high affinity for this molecule. In addition, F-TAC did not cross the blood-brain barrier. 5. Analysis of urine and plasma on DOWEX AG1X2 anionic resin showed that < 20% of the radioactivity was bound to this support. 13C- and 19F-nmr analysis of the non-bound radioactivity identified it to unchanged F-TAC, with bound radioactivity being due to polyanionic telomers arising from the hydrolysis of the amide function.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0049-8254
pubmed:author
pubmed:issnType
Print
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
535-41
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Disposition in rat of a new fluorinated, biocompatible, non-ionic telomeric carrier.
pubmed:affiliation
Inserum U71, Clermont-Ferrand, France.
pubmed:publicationType
Journal Article