目的研究HSP70(Heat shock protein 70)、PCNA、CD34在涎腺良性、恶性肿瘤中的表达特征及相关性。方法采用免疫组化(S-P)和双标双染检测41例良性和17例恶性肿瘤中HSP70、PCNA和CD34的表达。结果①HSP70明显表达于肿瘤上皮的细胞核和细胞...目的研究HSP70(Heat shock protein 70)、PCNA、CD34在涎腺良性、恶性肿瘤中的表达特征及相关性。方法采用免疫组化(S-P)和双标双染检测41例良性和17例恶性肿瘤中HSP70、PCNA和CD34的表达。结果①HSP70明显表达于肿瘤上皮的细胞核和细胞浆,而且在恶性肿瘤中的阳性率和阳性强度均显著增加。②PCNA主要表达于肿瘤细胞核,在恶性肿瘤中阳性率和阳性强度均显著增加。涎腺肿瘤中HSP70的表达强度与PCNA显著正相关(r=0.512,P<0.001)③CD34表达定位于血管内皮细胞的胞浆,恶性肿瘤高密度(h-MVD)表达为主。而且,CD34呈h-MVD表达时,HSP70的阳性率在恶性肿瘤显著高于良性肿瘤。结论①HSP70能促进肿瘤增殖,可能参与涎腺肿瘤的恶性转化和进展。②阳性的HSP70和CD34标记的h-MVD可能协同用作涎腺恶性肿瘤诊断的生物学标记。展开更多
Objective: To study the relationship between the expression of p27Kip1 and p53, and the infiltration, metastasis and prognosis in gastric carcinoma. Methods: The expression of p27Kip1 and p53 at protein level was dete...Objective: To study the relationship between the expression of p27Kip1 and p53, and the infiltration, metastasis and prognosis in gastric carcinoma. Methods: The expression of p27Kip1 and p53 at protein level was determined by immunohistochemical assay (two-step method) in 100 cases of gastric carcinoma. Results: Of the 100 cases, the positive rate of p27Kip1 and p53 expressions were 44% and 49%, respectively. In the group of gastric carcinomas with deep infiltration (infiltration group), lymph nodes metastasis group (metastasis group) and death-within-5-years group (death group), the expression of p27Kip1 was statistically lower (_P<0.05). In the metastasis group and death group, the expression of p53 was significantly higher (P<0.05). The results of the monovariate analysis revealed that the 5-year survival rate of the high p27Kip1 expression group was 70.59%, which is higher than those of the low p27Kip1 expression group (54.55%) and the negative experession group (26%). The 5-year survival rate of the high p53 expression group was 19.23%, which was lower than those of the p53 low expression group (43.75%) and the negative group (53.19%). Cox multivariate analysis showed that p27Kip1, like p53, was an independent prognostic index. But p27Klpl protein expression was a stronger independent survival predictor (RR=3.06) than p53 expression (RR=2.33). Conclusion: The low expression of p27Kip1 and the high expression of p53 reflected the more frequent invasion and metastasis, which resulted in the reduced survival of patients. As an independent markers of the gastric carcinoma, the expression of p27Kip1 is more useful than that of p53 in the prognosis prediction of gastric carcinoma.展开更多
文摘目的研究HSP70(Heat shock protein 70)、PCNA、CD34在涎腺良性、恶性肿瘤中的表达特征及相关性。方法采用免疫组化(S-P)和双标双染检测41例良性和17例恶性肿瘤中HSP70、PCNA和CD34的表达。结果①HSP70明显表达于肿瘤上皮的细胞核和细胞浆,而且在恶性肿瘤中的阳性率和阳性强度均显著增加。②PCNA主要表达于肿瘤细胞核,在恶性肿瘤中阳性率和阳性强度均显著增加。涎腺肿瘤中HSP70的表达强度与PCNA显著正相关(r=0.512,P<0.001)③CD34表达定位于血管内皮细胞的胞浆,恶性肿瘤高密度(h-MVD)表达为主。而且,CD34呈h-MVD表达时,HSP70的阳性率在恶性肿瘤显著高于良性肿瘤。结论①HSP70能促进肿瘤增殖,可能参与涎腺肿瘤的恶性转化和进展。②阳性的HSP70和CD34标记的h-MVD可能协同用作涎腺恶性肿瘤诊断的生物学标记。
文摘Objective: To study the relationship between the expression of p27Kip1 and p53, and the infiltration, metastasis and prognosis in gastric carcinoma. Methods: The expression of p27Kip1 and p53 at protein level was determined by immunohistochemical assay (two-step method) in 100 cases of gastric carcinoma. Results: Of the 100 cases, the positive rate of p27Kip1 and p53 expressions were 44% and 49%, respectively. In the group of gastric carcinomas with deep infiltration (infiltration group), lymph nodes metastasis group (metastasis group) and death-within-5-years group (death group), the expression of p27Kip1 was statistically lower (_P<0.05). In the metastasis group and death group, the expression of p53 was significantly higher (P<0.05). The results of the monovariate analysis revealed that the 5-year survival rate of the high p27Kip1 expression group was 70.59%, which is higher than those of the low p27Kip1 expression group (54.55%) and the negative experession group (26%). The 5-year survival rate of the high p53 expression group was 19.23%, which was lower than those of the p53 low expression group (43.75%) and the negative group (53.19%). Cox multivariate analysis showed that p27Kip1, like p53, was an independent prognostic index. But p27Klpl protein expression was a stronger independent survival predictor (RR=3.06) than p53 expression (RR=2.33). Conclusion: The low expression of p27Kip1 and the high expression of p53 reflected the more frequent invasion and metastasis, which resulted in the reduced survival of patients. As an independent markers of the gastric carcinoma, the expression of p27Kip1 is more useful than that of p53 in the prognosis prediction of gastric carcinoma.
