Increased frequency of 6-thioguanine-resistant peripheral blood lymphocytes in Werner syndrome patients. 1990

K Fukuchi, and K Tanaka, and Y Kumahara, and K Marumo, and M B Pride, and G M Martin, and R J Monnat
Department of Medicine and Geriatrics, Osaka University Medical School, Japan.

The frequency of spontaneous 6-thioguanine (TG)-resistant peripheral blood lymphocytes in five unrelated Werner syndrome (WS) patients was determined using an autoradiographic labeling assay. The average frequency of TG-resistant lymphocytes was eightfold higher in WS patients than in sex- and age-matched normal control donors. This finding and previous identification of increased spontaneous chromosomal rearrangements and deletions in WS cells or cell lines suggest that WS is a human genomic instability or mutator syndrome.

UI MeSH Term Description Entries
D008214 Lymphocytes White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS. Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004351 Drug Resistance Diminished or failed response of an organism, disease or tissue to the intended effectiveness of a chemical or drug. It should be differentiated from DRUG TOLERANCE which is the progressive diminution of the susceptibility of a human or animal to the effects of a drug, as a result of continued administration. Resistance, Drug
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D013866 Thioguanine An antineoplastic compound which also has antimetabolite action. The drug is used in the therapy of acute leukemia. 6-Thioguanine,2-Amino-6-Purinethiol,Lanvis,Tabloid,Thioguanin-GSK,Thioguanine Anhydrous,Thioguanine Hemihydrate,Thioguanine Monosodium Salt,Thioguanine Tabloid,Tioguanina Wellcome,Tioguanine,2 Amino 6 Purinethiol,6 Thioguanine,Anhydrous, Thioguanine,Thioguanin GSK,ThioguaninGSK

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