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目的：研究成骨性肿瘤组织中Ⅰ、Ⅱ和Ⅲ型胶原蛋白的表达及与肿瘤分类、分化的关系。方法：用饱和苦味酸天狼星红偏振光镜和免疫组化ＬＳＡＢ 法，检测６９ 例成骨性肿瘤组织中Ⅰ、Ⅱ、和Ⅲ型胶原的表达情况，并用ＥＭＡＬ２００ 真彩图像分析系统进行分析和半定量测定。结果：骨瘤和骨样骨瘤中只有Ⅰ型胶原的表达（ 阳性率均为１００ ％ ，灰度值分别为１３３－１３ ±７－４７ 和１３６－４９ ±１４－２１） ，而骨肉瘤不仅Ⅰ型胶原阳性率和强度均明显低于前二者（ 阳性率８７ ％ ，４０／４６，灰度值１７１－９９ ±１４－７４） ，且出现了Ⅱ型和Ⅲ型胶原，Ⅱ型胶原在软骨母细胞型和混合型的表达明显高于其它型骨肉瘤（ Ｐ＜ ０－０１） ，而Ⅰ、Ⅲ型胶原的表达在各型骨肉瘤间无显著差别；在高中低３ 组不同分化程度的骨肉瘤间，Ⅰ型胶原表达差异显著（ Ｐ＜ ０－０１） ，分化越低表达越少；天狼星红与免疫组化染色结果基本一致。结论：Ⅱ型胶原可作为软骨母细胞型和混合型骨肉瘤的分型参考指标，Ⅰ型胶原的表达可作为骨肉瘤分化的参考指标。天狼星红是鉴别Ⅰ、Ⅲ型胶原简便、经济的方法之一。
Objective: To study the expression of type I, II and III collagen in osteoblast tumors and their relationship with tumor classification and differentiation. METHODS: Expressions of type I, II, and III collagens in 69 osteoblastic tumors were measured by saturated picric acid Sirius red-polarized light microscopy and immunohistochemistry using the LSAB method. EMAL200 true color image analysis system was used. Analytical and semi-quantitative measurements were performed. RESULTS: Only type I collagen was expressed in osteosarcomas and osteoid osteomas (positive rates were 100% and gray values were 133-13 ±7-47 and 136-49 ±14-21, respectively). Osteosarcoma was not only The positive rate and intensity of type I collagen were significantly lower than those of the former two (positive rate 87%, 40/46, gray value 171-99 ±14-74), and type II and type III collagens appeared, type II collagen in The expression of chondroblastoma and mixed type was significantly higher than that of other types of osteosarcoma (P < 0-01), while the expression of type I and type III collagen was not significantly different among various types of osteosarcoma; different levels of differentiation were observed in high, middle and low groups. Among the osteosarcomas, there was a significant difference in the expression of type I collagen (P < 0-01). The lower the differentiation, the lower the expression. The results of immunohistochemical staining of Sirius Red were basically the same. Conclusion: Type II collagen can be used as a reference marker for chondroblastoma and mixed osteosarcoma, and the expression of type I collagen can be used as a reference marker for osteosarcoma differentiation. Sirius Red is one of the simple and economical methods for identifying type I and type III collagen.