54例非亲缘脐血造血干细胞移植回顾性分析

本研究对广州市脐血库1998年6月至2003年7月提供的54例非亲缘脐血移植进行回顾性分析,以研究脐血移植的相关影响因素.脐血均采自广州市妇婴医院正常分娩的足月顺产孕妇,脐血分离、冻存、复温方法参照纽约脐血库标准及相关文献;选择脐血的依据是HLA相合程度及有核细胞数量.结果表明1998年6月至2003年7月间,库存脐血3475份,与21家移植中心合作提供脐血99份,治疗患者85例.其中同胞脐血移植11例.对54例非亲缘关系脐血移植病例进行统计分析显示,在54例受者中,恶性病患者43例,占79.6%,非恶性病患者11例,占20.4%,受者中位年龄9.5(1.2-33)岁,中位体重27(10-60)公斤,TNC中位输入量6.82×107/kg,移植后60天植入43例(ANC＞500/μl的中位时间为17天),植入率为79.6%.脐血移植有核细胞重建时间与输入的有核细胞数以及疾病类型相关,同HLA相合程度不相关.急性Ⅲ-Ⅳ度GVHD发生率为21.6%,慢性GVHD发生率为5.4%.6例患者出现自体恢复(11.1%).存活率42.6%.结论非亲缘性脐血造血干细胞移植尤其在治疗小儿白血病方面具有良好的应用前景.

Retrospective Analysis of 54 Cases of Unrelated Umbilical Cord Blood Transplantation

In order to research the related factors of umbilical cord blood transplantation, 54 cases of unrelated umbilical cord blood transplantation were analyzed retrospectively, which were performed from June 1998 to July 2003. All cord blood units were obtained from full term normal vaginal deliveries in Guangzhou Maternal-Neonatal Hospital. The fractionation, cryopreservation and thawing of cord blood have been done according to the regulation of New York umbilical cord blood bank and pertinent literature. The selection of cord blood is based on HLA typing and the number of nucleated cells. The results showed that from June 1998 to July 2003, 3 475 units of cord blood were collected in Guangzhou Umbilical Cord Blood Bank and 99 units were provided for therapy of 85 patients in 21 transplantation centers, including 11 sibling and 74 unrelated cord blood transplantations. 54 cases of unrelated cord blood transplantation were reported, including 43 malignant diseases and 11 non-malignant diseases. The median age of recipients was 9.5 (range 1.2 - 33) years, the median weight was 27 (range 10 - 60) kg, the median number of TNC was 6.82 x 10(7)/kg, 43 cord blood were implanted (ANC > 500/microl) at day 60 after transplantation (79.6%, median 17). The time of nuclear cell reconstitution after cord blood transplantation was statistically related with nucleated cells and the type of disease, not related with HLA matching. Acute GVHD was present in 8 patients (21.6%) and chronic GVHD occurred in 2 patients (5.4%), 6 patients suffered from graft failure (11.1%). The total survival rate was 42.6%. It is suggested that unrelated umbilical cord blood transplantation seems to be a good substitute for bone marrow transplantation and has good prospects especially in children.