P53异常在弥漫大B细胞淋巴瘤中的预后价值

本研究旨在分析P53异常在弥漫大B细胞淋巴瘤(DLBCL)中的预后价值。采用荧光原位杂交法(FISH)对50例DLBCL患者的扁桃体组织进行P53基因检测,同时采集患者外周血用酶联免疫吸附(ELISA)法进行血清P53蛋白含量的检测,了解DLBCL患者P53基因及P53蛋白表达与淋巴瘤预后的关系。结果表明,50例患者中P53缺失者21例,阳性率42.0%,患者血清P53蛋白含量为(176.25±61.25)pg/ml,高于正常对照。经Cox模型似然比检验结果筛选,DLBCL患者的P53异常可作为独立的预后因素。P53基因检测阳性患者的死亡风险高于P53检测阴性者。经FISH检测,组织学P53基因缺失的患者同时有相对较高的血清突变型P53蛋白水平。结论:P53异常可作为DLBCL患者独立的预后因素,在疾病诊断初期即对DLBCL患者的P53表达进行检测有利于准确判断预后。

Prognostic value of P53 aberrations in diffuse large B-cell lymphoma

The aim of this study was to analyze the P53 aberrations in diffuse large B-cell lymphoma (DLBCL) and its prognostic value. Using fluorescence in situ hybridization (FISH), the P53 gene was detected in paraffin-embedded tonsil tissues from 50 cases of DLBCL, while all the peripheral blood of patients was collected for detecting P53 protein in serum by using enzyme-linked immunosorbent assay (ELISA). The relationships between P53 gene and protein expression and the prognosis of patients with DLBCL were analyzed. The results showed that 21 out of 50 cases had P53 gene deletion, serum P53 protein content was (176.25 ± 61.25) pg/ml, which was higher than that in normal controls. The Cox model likelihood ratio test found that abnormal P53 could be used as independent prognostic factor in DLBCL patients. The risk of death in patients with P53 gene deletion were more than that in patients with P53 gene normal. The patients with histology P53 gene deletion detected by FISH also had relatively high level of mutant P53 protein in serum. It is concluded that P53 aberrations in patients with DLBCL can be used as an independent prognostic factor, the early detection of P53 in DLBCL patients helps to determine their prognosis accurately.