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Studies on Poly (ADP-ribose) Synthesis in Lymphocytes of Systemic Lupus Erythematosus Patients

A method for assaying poly (ADP-ribose) polymerase (PADPRP) activity in lymphocytes of systemic lupus erythematosus (SLE) patients has been developed. Using this method, PADPRP activity has been studied in lymphocytes from 15 patients and 13 controls. The mean activity in SLE lymphocytes was significantly lower than that in controls and 60% of the SLE patients demonstrated activities below the minimum of the control population. Possible mechanisms for this altered metabolism were investigated. The Km app of PADPRP for NAD; size distribution, branch frequency, and rates of turnover of polymers; competition for substrate; and number of PADPRP molecules were studied. The data demonstrated that SLE lymphocytes have a decreased synthetic capacity rather than alterations in the substrate or in turnover of the product.

Identiferoai:union.ndltd.org:unt.edu/info:ark/67531/metadc501263
Date12 1900
CreatorsChen, Hai-Ying
ContributorsJacobson, Elaine, Alvarez-Gonzalez, Rafael, Lacko, Andras G.
PublisherUniversity of North Texas
Source SetsUniversity of North Texas
LanguageEnglish
Detected LanguageEnglish
TypeThesis or Dissertation
Formatviii, 103 leaves : ill., Text
RightsPublic, Chen, Hai-Ying, Copyright, Copyright is held by the author, unless otherwise noted. All rights reserved.

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