Linked Life Data

1769111

Source:http://linkedlifedata.com/resource/pubmed/id/1769111

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1992-2-27
pubmed:abstractText
Spectrofluorimetry was investigated as an alternative to HPLC for determining p-aminobenzoic acid and p-aminosalicylic acid in the N-benzoyl-L-tyrosyl-p-aminobenzoic acid/p-aminosalicylic acid test of pancreatic exocrine function. Urine specimens were hydrolysed for 30 min in 4 M NaOH at 100 degrees C. The fluorescence of p-aminobenzoic acid was measured in dimethyl sulphoxide solution (lambda ex = 300 nm, lambda em = 340 nm) and that of p-aminosalicylic acid in sodium acetate buffer, pH 4.0 (lambda ex = 297 nm, lambda em = 394 nm). The linear range was 0.038-8 mM for p-aminobenzoic acid and 0.051-12 mM for p-aminosalicylic acid, within-batch precision was 2.2% and 5.5%, respectively, and the entire analysis could be completed within 40 min. Although not eliminated, drug interference was greatly reduced in comparison with colorimetry. In 23 consecutive pancreatic function tests there was an excellent correlation between the p-aminobenzoic acid/p-aminosalicylic acid excretion index obtained by fluorimetry and the results from HPLC analysis (y = 0.914x + 0.070, r = 0.987, p less than 0.001). The method is simple, cost-effective and may be particularly valuable in developing countries having a high incidence of chronic pancreatitis.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0009-8981
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
199
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
253-62
pubmed:dateRevised
2010-8-25
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Spectrofluorimetric determination of urinary p-aminobenzoic and p-aminosalicylic acids in the BT-PABA/PAS test of pancreatic function.
pubmed:affiliation
University Department of Gastroenterology, Royal Infirmary, Manchester, England.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't