Linked Life Data

6772548

Source:http://linkedlifedata.com/resource/pubmed/id/6772548

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1980-10-27
pubmed:abstractText
A genetic deficiency of purine nucleoside phosphorylase (NP) is associated with immune dysfunctin that specifically affects T cells. An absence of adenosine deaminase (ADA), the preceding enzyme in the pathway of purine recycling, is associated with failure of both T and B lymphocyte function. Formycin B, an analogue of inosine and an inhibitor of purine nucleosidase phosphorylase, was used in cell culture systems to stimulate deficiency of this enzyme. The cells used were normal circulating lymphocytes and lymphoblastoid cell lines (LCL) with T and B cell characteristics. Formycin B inhibited the growth of these cells, but its primary effect was found to be due to a mechanism other than purine nucleoside phosphorylase inhibition. The possibility that formycin B was inhibiting adenosine deaminase, for which it is a product analogue, was studied by the analysis of reaction progress curves using the integrated rate equation. The molecular structure of formycin B, whilst preventing its phosphorylytic cleavage by purine nucleoside phosphorylase, could enable this compound to function as a substrate for adenosine kinase. The resultant formation of formycin B nucleotide probably causes the observed inhibition of growth in cultured cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0090-0877
pubmed:author
pubmed:issnType
Print
pubmed:volume
9
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
257-67
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1980
pubmed:articleTitle
Formycin B, purine nucleoside phosphorylase and lymphocyte function.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, U.S. Gov't, Non-P.H.S.