儿童过敏性紫癜T细胞亚群的改变及糖皮质激素受体水平的变化

为了解过敏性紫癜（ＨＳＰ）患儿糖皮质激素受体（ＧＣＲ）及Ｔ细胞亚群的改变，采用放射配基结合一点分析法，测定了患儿和健康儿童（各３５例）的外周血Ｔ淋巴细胞亚群及ＧＣＲ。结果：患儿外周血ＣＤ３＾＋，ＣＤ４＾＋细胞及ＣＤ４＾＋／ＣＤ８＾＋细胞比值分别为４６．０３％±９．４０％，３１．０６％±６．８０％和１．２３±０．３３，淋巴细胞ＧＣＲ值为３０６０±２１５３结合位点／细胞。健康对照儿童外周血ＣＤ３＾＋，

A study on the T-cell subsets and glucocorticoid receptor in children with anaphylactoid purpura]

To study the changes of T-cell subsets and glucocorticoid receptor (GCR) in children with anaphylactoid purpura. T-cell subsets and GCR were measured respectively by cytotoxicity assay and GCR radioligand-binding assay in peripheral blood lymphocytes from 35 children with anaphylactoid purpura and 35 normal children. The result showed that the average percentages of CD3+, CD4+ cell subtypes and the CD4+/CD3+ ratio were 46.03% +/- 9.40%, 31.06% +/- 6.80% and 1.23 +/- 0.33 respectively, and the GCR numbered 3060 +/- 2153 binding sites per cell in the study group, on the other hand, the average percentages of CD3+, CD4+ cell subtypes and the CD4+/CD3+ ratio were 53.11% +/- 5.40%, 35.01% +/- 4.41% and 1.52 +/- 0.26 respectively, and the GCR numbered 5210 +/- 1639 binding sites per cell in the control group. These indicate that and that patients with anaphylactoid purpura may have abnormal immunomodulations and decreased GCR numbers per cell, which may have effects on the immune dysfunctions in the pathogenesis of anaphylactoid purpura.