Expression and significance of P-glycoprotein in triple negative breast cancer / 国际外科学杂志

Objective To investigate the expression and significance of P-glycoprotein in triple negative breast cancer (TNBC).Methods One hundred and seventy-one cases of breast invasive ductal carcinoma in our hospital were retrospectively analyzed.According to the expression of ER,PR,Her2,we categorized those paitents into triple negative breast cancer group (58 cases) and non triple negative breast cancer group (113 cases).The different expression of P-glycoprotein was detected by immunohistochemieal technology in two groups.We analyzed the relationship between the expression of P-glycoprotein and clinical and pathological features in TNBC,and investigated the effect of P-gp on the rate of recurrence and metastasis in 3 years.Results (1) The expression of P-gp in TN BC was significantly higher than that of NTNBC (53.45％ vs 37.17％) (P ＜ 0.05).(2) The expression of P-gp in TNBC was associated with TNM stage,histological grade,lymph node status and vascular invasion (P ＜ 0.05),but not with age and size of the tumor (P ＞ 0.05).(3) The rate of recurrence and metastasis in positive expression of P-gp in TNBC was 58.06％,which was significantly higher than negative expression of P-gp in TNBC (44.44％),but no statistically significant was found(P ＞ 0.05).Survival analysis showed that P-glycoprotein expression had no relationshiop to 3-year cumulative survival rate (P =0.161 ＞ 0.05).Conclusions The positive expression of P-gp in TNBC is associated with drug resistance and metastasis,but has no obvious significance to recurrence and metastasis,so as to 3-year cumulative survival rate.

Expression of phosphorylated caspase-8 in non-small cell lung cancer and the clinical implications / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the clinical significance of phosphorylated caspase-8 by Src in patients with operable non-small cell lung cancer.</p><p><b>METHODS</b>Src and caspase-8 expressions were tested using immunohistochemistry in non-small cell lung cancer tissues and control lung tissues. The expression of phosphorylated caspase-8 at 380 tyrosine by Src was detected using Western blotting. The disease-free survival (DFS) of patients positive and negative for phosphorylated caspase-8 was analyzed with Kaplan-Meire survival curve.</p><p><b>RESULTS</b>No significant difference was found in the positivity rate of caspase-8 or Src between the cancer tissues and control lung tissues (76.3% vs 83.3%, P>0.05; 70.1% vs 66.4%, P>0.05). All the patients with Casp8- and Src-positive cancers were positive for phosphoryalted caspase-8, whose expression rate was significantly higher in the cancer tissues than in the paired control lung tissues (52.4% vs 7.1%, P<0.05). The 2-year DFS was significantly higher in patients negative for phosphorylated caspase-8 than in the positive patients (32.0% vs 60.3%, P<0.05).</p><p><b>CONCLUSION</b>Phosphorylated caspase-8 may serve as a predictor for a poorer DFS in patients with operable non-small cell lung cancer.</p>

Multiple breast cancer: an update on diagnosis, pathogenesis and therapy / 国际外科学杂志

There are many problems about multiple breast cancer (MBC),such as whether it results from intramammary spread of a single tumor, or from two or more separate neoplastic events? Whether MBC has inferior outcome compared with unicentric lesions? Whether MBC is suit for conservative surgery and the sentinel lymph node biopsy, and so on. Thus: We reviewed the prospect for diagnosis and therapy of MBC.