Abnormal telomere shortening in leucocytes of children with Shwachman-Diamond syndrome

被引:43
作者
Thornley, I
Dror, Y
Sung, L
Wynn, RF
Freedman, MH
机构
[1] Univ Toronto, Hosp Sick Children, Div Haematol Oncol, Toronto, ON M5G 1X8, Canada
[2] Royal Manchester Childrens Hosp, Dept Haematol, Manchester M27 1HA, Lancs, England
关键词
Shwachman-Diamond syndrome; telomeres; haemopoietic stem cell; myelodysplastic syndrome; inherited bone marrow failure;
D O I
10.1046/j.1365-2141.2002.03371.x
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Haemopoietic dysfunction, ranging from single-lineage cytopenia to severe aplasia and/or myelodysplasia (MDS), is prominent in Shwachman-Diamond syndrome (SDS). To assess haemopoietic stem cell proliferation in SDS, we compared leucocyte telomere length in 12 patients with SDS to that of 41 controls, using an in-gel hybridization technique. SDS patients had an age-adjusted mean telomere length 1.4 kilobase pairs (kbp) shorter than controls (P < 0.0001). Patients with'non-severe' SDS (one- or two-lineage cytopenias; no MDS) had shortened telomeres (-1.4 kbp; P = 0.0004), as did those with 'severe' SDS. We conclude that stem cell hyperproliferation is a feature of SDS from its outset.
引用
收藏
页码:189 / 192
页数:4
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