Advances in chemoprevention of breast cancer / 肿瘤

Breast cancer is one of the most common malignant tumors in women, which seriously threatens the health of women. Estrogen promotes the development of breast cancer by binding to estrogen receptor and triggering a signaling cascade. The aromatase inhibitor (AI) and the selective estrogen receptor modulators (SERMs) prevent the effect of estrogenon promoting breast cancer through different mechanisms. Relevant studies have shown that SERMs and AI can effectively reduce the recurrence and metastasis of breast cancer, which suggests that they may effectively prevent the occurrence of breast cancer. The latest research progress in the randomized clinical trials of chemoprevention agents such as SERMs and AI are reviewed in this paper.

The detection of the expression of CD44v8 with RT-PCR in bladder and urothelial carcinoma / 国际检验医学杂志

Objective To explore the expression of CD44v8 protein in human bladder and urothelial carcinoma ,as well as the value in diagnosis of human bladder and urothelial carcinoma .Methods RT‐PCR was used to analysis the expression of CD44v8 protein in 75 patients with bladder and urothelial carcinoma in the pathological stage and clinical stage and 20 subjects of normal bladder mucosa were collected as control .Results CD44v8 protein was negative in all normal bladder and urothelial mucosa ,the copy number was less than 1 × 102 copy/mL ;26 cases of bladder and urothelial carcinoma was positive ,and the positive rate of CD44v8 was 34 .7% ,and Ct values were less than 35 and copy number was greater than 1 × 104 copy/mL .Positive rate was correla‐ted with high pathological grades and TNM stages ,but no significant difference was observed in recurrence of tumor .Conclusion CD44v8 could be useful indicator for the assessment of pathological grades and TNM stages of bladder and urothelial carcinoma .

The detection of CD44v2 expression by using real-time fluorescent quantitative PCR in bladder and urothelial carcinoma / 国际检验医学杂志

Objective To investigate the expression of CD44 varant 2(CD44v2) in bladder and urothelial carcinoma ,and to study its significance in the diagnosis of human bladder and urothelial carcinoma .Methods Real‐time fluorescent quantitative PCR was used to analyze the expression of CD44v2 protein in 70 bladder and urothelial carcinoma tissue samples from patients in different pathological and clinical stages .Meanwhile ,20 tissue samples of normal bladder mucosa were collected as controls .Results CD44v2 expression was negative in normal bladder and urothelial mucosa ,the gene copies were less than 1 × 102 copies/mL ,while the posi‐tive expression rate of CD44v2 was 42 .9% (30/70) ,and Ct values were less than 35 and copy number was greater than 1 × 104 cop‐ies/mL .Positive expression rate was correlated with high pathological grades and TNM stages .Conclusion CD44v2 could be an useful indicator for the early assessment of bladder and urothelial carcinoma .