p73在骨巨细胞瘤中表达的意义

目的：研究p73蛋白在骨巨细胞瘤中的表达，探讨其在骨巨细胞瘤发生、发展中的可能作用。方法：应用免疫组化S－P法检测40例骨巨细胞瘤石蜡标本中p73蛋白的表达情况。结果：p73在骨巨细胞瘤中表达阳性率为30.0％，对照组骨软骨瘤表达阳性率为20.0％，两组相比无显著差异（P＞0.05）。p73在骨巨细胞瘤Ⅰ～Ⅱ级组表达阳性率为17.9％，Ⅲ级组为58.3％，二者相比差异显著（P＜0.05）。结论：p73在Ⅲ级骨巨细胞瘤中表达明显增高，提示其在骨巨细胞瘤发生、发展中可能发挥重要作用，并可作为骨巨细胞瘤Jaffe分级的辅助指标之一。

Expression of p73 Protein in Giant Cell Tumor of Bone

Objective: Our aims were to study the expression of p73 protein in giant cell tumor of bone, and to investigate its function in the carcinogenesis and development of giant cell tumor of bone. Methods: The expression of p73 was detected by using S-P immunohistochemical method in 40 cases of paraffin-embedded sections of giant cell tumor of bone. Results: The positive rate of p73 in 40 patients with giant cell tumor of bone was 30.0%,and 20.0% in osteochondroma.The difference between them was not significant(P<0.05). There was significant difference between the expression of p73 in different stages of giant cell tumor of bone(P>0.05). Conclusion: The expression of p73 in giant cell tumor of bone increased prominently in this experiment. It suggests that p73 may play an important role in the carcinogenesis and development of giant cell tumor of bone, and p73 may also have a certain value for the diagnosis of giant cell tumor of bone.