Association among somatic HPRT mutant frequency, peripheral blood T-lymphocyte clonality, and serologic parameters of disease activity in children with juvenile onset dermatomyositis

Somatic mutant frequencies (Mf) were determined using the HPRT T-cell cloning assay of peripheral blood T-lymphocytes from 14 children with juvenile onset dermatomyositis (JDM). Serologic parameters, specifically muscle enzyme determinations in JDM subjects, were correlated with residual lnMf (delta...

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Veröffentlicht in:Clinical immunology (Orlando, Fla.). - 1999. - 91(1999), 1 vom: 16. Apr., Seite 61-7
1. Verfasser: Abramson, L S (VerfasserIn)
Weitere Verfasser: Albertini, R J, Pachman, L M, Finette, B A
Format: Aufsatz
Sprache:English
Veröffentlicht: 1999
Zugriff auf das übergeordnete Werk:Clinical immunology (Orlando, Fla.)
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Hypoxanthine Phosphoribosyltransferase EC 2.4.2.8 Aspartate Aminotransferases EC 2.6.1.1 Creatine Kinase EC 2.7.3.2 Fructose-Bisphosphate Aldolase EC 4.1.2.13
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100 1 |a Abramson, L S  |e verfasserin  |4 aut 
245 1 0 |a Association among somatic HPRT mutant frequency, peripheral blood T-lymphocyte clonality, and serologic parameters of disease activity in children with juvenile onset dermatomyositis 
264 1 |c 1999 
336 |a Text  |b txt  |2 rdacontent 
337 |a ohne Hilfsmittel zu benutzen  |b n  |2 rdamedia 
338 |a Band  |b nc  |2 rdacarrier 
500 |a Date Completed 17.05.1999 
500 |a Date Revised 14.11.2007 
500 |a published: Print 
500 |a Citation Status MEDLINE 
520 |a Somatic mutant frequencies (Mf) were determined using the HPRT T-cell cloning assay of peripheral blood T-lymphocytes from 14 children with juvenile onset dermatomyositis (JDM). Serologic parameters, specifically muscle enzyme determinations in JDM subjects, were correlated with residual lnMf (delta) in these patients to compare T-cell activation with clinical parameters associated with JDM. In addition TCR analysis was performed to determine T-cell proliferation and clonality on 12 HPRT mutant isolates from two individuals with JDM. Statistically significant correlations were found between residual lnMf and the following serologic parameters: aldolase (r = 0.771, P = 0.015); CPK (r = 0.602, P = 0.023); and SGOT (r = 0.656, P = 0.011) in children with JDM. In addition, identical TCR gene rearrangements were identified in 86 and 40% of the HPRT mutant isolates from the two patient samples analyzed, which is a significantly higher level of clonality than the 10-15% expected in normal individuals. These data suggest that determining HPRT Mf can be a useful antigen-independent method of selecting clonally expanding T-lymphocytes in autoimmune disease where relevant antigens are unknown. Future analysis of HPRT mutant isolates from children with active myositis may increase our understand of the activated T-cells involved in this disease 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Research Support, U.S. Gov't, P.H.S. 
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650 7 |a EC 2.4.2.8  |2 NLM 
650 7 |a Aspartate Aminotransferases  |2 NLM 
650 7 |a EC 2.6.1.1  |2 NLM 
650 7 |a Creatine Kinase  |2 NLM 
650 7 |a EC 2.7.3.2  |2 NLM 
650 7 |a Fructose-Bisphosphate Aldolase  |2 NLM 
650 7 |a EC 4.1.2.13  |2 NLM 
700 1 |a Albertini, R J  |e verfasserin  |4 aut 
700 1 |a Pachman, L M  |e verfasserin  |4 aut 
700 1 |a Finette, B A  |e verfasserin  |4 aut 
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