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Sebastian platelet syndrome: a new variant of hereditary macrothrombocytopenia with leukocyte inclusions 总被引:4,自引:0,他引:4
This report describes a new variant of hereditary macrothrombocytopenia combined with the presence of neutrophil inclusions that differ from those found in patients with May-Hegglin anomaly, the Chediak-Higashi syndrome or individuals with septicaemia and toxic D?hle bodies in polymorphonuclear leukocytes (PMN). The PMN inclusions in the family described in this report are similar to those found in patients with the Fechtner syndrome, a variant of Alport's syndrome. However, other features of Alport's syndrome, including high frequency deafness, congenital cataracts, and chronic interstitial nephritis are absent in the members of the family described here. We have named this anomaly the Sebastian platelet syndrome. The macrothrombocytopenia and neutrophil inclusions observed in this family can occur in the absence of other congenital anomalies and therefore represent a unique syndrome. 相似文献
124.
Differences in turnover between thymic medullary dendritic cells and a subset of cortical macrophages 总被引:3,自引:0,他引:3
J Kampinga P Nieuwenhuis B Roser R Aspinall 《Journal of immunology (Baltimore, Md. : 1950)》1990,145(6):1659-1663
To investigate the turnover of thymic accessory cells, we performed vascular thymus transplantation in RT7 congenic rats. mAb specific for one of the two allelic variants of the RT7 molecule, as well as mAb specific for either medullary interdigitating cells or a subset of cortical macrophages (M phi), were used on cryostat sections and cell suspensions prepared from grafted thymuses to monitor the turnover of these two cell types. In contrast to the complete turnover of interdigitating cells within 3 wk after transplantation, ED2-labeled cortical M phi showed a very slow turnover. Seventy-six days after transplantation, more than 30% of these M phi were found to be still of donor origin. The different turnover rates of these thymic accessory cells could reflect their function in T cell development. 相似文献
125.
M J Metzelaar H J Schuurman H F Heijnen J J Sixma H K Nieuwenhuis 《Virchows Archiv. B, Cell pathology including molecular pathology》1991,61(4):269-277
During platelet secretion granule membrane glycoproteins are translocated to the plasma membrane. We report here the biochemical and immunohistochemical characterization of a panel of platelet-secretion-specific, CD62 and CD63 monoclonal antibodies (MoAb), which we raised to thrombin-activated platelets. The CD62 MoAb identify the alpha-granule membrane protein GMP-140, also designated platelet activation-dependent granule external membrane protein (PADGEM). The number of epitopes on thrombin-activated platelets ranged from 15,000 to 20,000. The CD63 MoAb recognize a 30-60 kDalton integral membrane protein of lysosomes. Due to its distinct localization, we have designated the CD63 antigen lysosome integral membrane protein, CD63 (LIMP-CD63). The number of epitopes on thrombin-activated platelets ranged from 9000 to 11,000. Expression of GMP-140, a member of the Selectin family (also referred as the LEC-CAM family) of adhesion molecules, and LIMP-CD63 was examined on human spleen, thymus and lymph node by immunohistochemistry. Both GMP-140 and LIMP-CD63 showed a wide distribution in lymphoid tissues; vascular endothelial cells and tissue compartments that were readily accessible to blood-borne components were uniformly positive for GMP-140 and LIMP-CD63. Furthermore, LIMP-CD63 was expressed in polymorphonuclear granulocytes and macrophages. 相似文献