目的:探討表沒食子兒茶素沒食子酸酯(EGCG)對乳腺癌細胞MCF7生長的影響及對乳腺癌細胞MDAMB231遷移的影響。方法:MCF7細胞培養貼壁之后,加入EGCG處理,2d后收集蛋白,采用Western Blot檢測磷酸化p38絲裂原活化蛋白激酶(phosphop38MAPK)的表達;同樣處理后收集活細胞,用細胞計數法檢測細胞的存活;取對數生長期的MDAMB231細胞,分至6孔板培養,使用EGCG處理后,采用細胞劃線法探測乳腺癌細胞的遷移。結果:使用EGCG處理乳腺癌細胞后,phosphop38MAPK的表達降低,EGCG處理乳腺癌細胞4d后其增殖率降低50%,遷移活性降低。結論:EGCG處理乳腺癌細胞能抑制腫瘤細胞的生長以及遷移,這與p38MAPK信號通路相關。
目的:探討雌激素饑餓對腫瘤壞死因子相關凋亡誘導配體(TRAIL)誘導乳腺癌細胞MCF-7凋亡的影響及作用機制。〖HTH〗方法〖HTSS〗:MCF-7細胞培養貼壁之后,用雌激素饑餓處理后加入TRAIL,用熒光染料Hoechst染色法檢測細胞的凋亡,用細胞計數法檢測細胞的存活。在雌激素饑餓處理MCF-7細胞后,收集對照和饑餓組蛋白用Western blot法檢測相關的蛋白表達。〖HTH〗結果〖HTSS〗:單獨使用雌激素饑餓處理或者單獨使用TRAIL處理乳腺癌細胞MCF-7都能誘導細胞凋亡,但是它們誘導凋亡的活性較小,兩種方法聯合使用可以極大地增加誘導細胞凋亡的活性(Plt;0.001)。雌激素饑餓處理后的乳腺癌細胞,死亡受體5(DR5)表達上調。〖HTH〗結論〖HTSS〗:乳腺癌細胞MCF-7對TRAIL敏感度不高,雌激素饑餓可以增加TRAIL誘導乳腺癌細胞凋亡的活性,DR5與雌激素饑餓誘導TRAIL活性增加相關。
Objective To investigate the prognostic differences and decision-making role in postoperative radiotherapy of four molecular subtypes in pT1-2N1M0 stage breast cancer. Methods The clinicopathological data of 1526 patients with pT1-2N1M0 breast cancer treated at West China Hospital of Sichuan University between 2008 and 2018 were retrospectively analyzed. χ2 test was used to compare the clinicopathological features among patients with different molecular subtypes. Kaplan-Meier survival analysis and log-rank test were used to draw the survival curves and compare the overall survival (OS) and breast cancer-specific survival (BCSS) among patients with different molecular subtypes. Cox regression model was used to determine the influencing factors of OS of patients after radical mastectomy. Results Among the 1526 patients with pT1-2N1M0 breast cancer, there were 674 cases (44.2%) of Luminal A subtype, 530 cases (34.7%) of Luminal B subtype, 174 cases (11.4%) of human epidermal growth factor receptor 2 (Her-2) overexpression subtype, and 148 cases (9.7%) of triple-negative subtype. The 5-year OS rates of Luminal A, Luminal B, Her-2 overexpression and triple negative patients were 98.6%, 94.3%, 95.5% and 91.2%, respectively (χ2=11.712, P=0.001), and the 5-year BCSS rates were 99.3%, 94.6%, 95.5% and 92.5%, respectively (χ2=18.547, P<0.001). Multiple Cox regression analysis showed that menstrual status [hazard ratio (HR)=0.483, 95% confidence interval (CI) (0.253, 0.923), P=0.028] and whether endocrine therapy [HR=2.021, 95%CI (1.012, 4.034), P=0.046] were prognostic factors for the 5-year OS rate of breast cancer patients after radical mastectomy (P<0.05). However, it failed to reveal that Luminal subtypes and postoperative radiotherapy were prognostic factors for the 5-year OS rate (P>0.05). Conclusions In pT1-2N1M0 breast cancer patients, the 5-year OS rate and 5-year BCSS rate in triple-negative patients are the lowest. The relationship between Luminal classification, postoperative radiotherapy and survival in patients after radical mastectomy needs further study in the future.
The important detection indicators of liquid biopsy in cancer patients include circulating tumor cells and circulating tumor DNA. The former refers to the cells that fall off from the primary tumor and metastatic sites and enter the blood circulation through blood vessels or lymphatic vessels, while the latter refers to the cell-free DNA released into the blood vessels by apoptotic or necrotic tumor cells. For breast cancer patients receiving neoadjuvant therapy, dynamic monitoring of circulating tumor cells and circulating tumor DNA can help early identify the responsiveness of tumor patients to different treatments and guide subsequent treatments to improve prognosis. This article reviews the research progress and clinical significance of detecting circulating tumor cells and circulating tumor DNA in breast cancer patients receiving neoadjuvant therapy, aiming to provide a reference for the more rational application of circulating tumor cells and circulating tumor DNA in neoadjuvant therapy of breast cancer.
In the process of solid tumor transformation, the expression of claudins is often dysregulated. Claudins are involved in almost all aspects of tumor biology and steps of tumor development, suggesting that they have the potential to be diagnostics, and prognostic biomarkers and therapeutic targets. Current studies have found that Claudin18.2 is overexpressed in gastric cancer, pancreatic cancer, ovarian cancer and other diseases. Targeted anti-tumor therapy based on Claudin 18.2 has become a research hotspot recently. Therefore, this article reviews the basic structural characteristics of Claudin18.2, its expression in various malignant solid tumors, the progress of research and application, and prospect.
Objective To analyze the efficacy of breast-conserving surgery with adjuvant radiation therapy (BCS+RT) vs. mastectomy (MAST) for early breast cancer among young Chinese patients. Methods Young female breast cancer patients (≤40 years old) treated at West China Hospital of Sichuan University between January 1st, 2008, and December 31st, 2019 were analyzed for clinical staging, molecular subtypes, surgical techniques, and prognostic assessments using follow-up data. Results Of 974 eligible patients in this study, 211 underwent BCS+RT and 763 underwent MAST. The Kaplan-Meier analyses indicated that there was no significant difference in the 5-year locoregional recurrence-free survival rate (99.1% vs. 99.4%, P=0.299), distant metastasis-free survival rate (97.9% vs. 96.4%, P=0.309), breast cancer-specific survival rate (100.0% vs. 97.0%, P=0.209), or overall survival rate (99.4% vs. 96.8%, P=0.342) between patients who underwent BCS+RT and those who underwent MAST. The multiple Cox proportional hazards regression analyses revealed that the treatment approach (BCS+RT or MAST) did not significantly predict locoregional recurrence-free survival (P=0.427), distant metastasis-free survival (P=0.154), breast cancer-specific survival (P=0.155), or overall survival (P=0.263). Subgroup analyses showed that there was no statistically significant difference in survival outcomes between BCS+RT and MAST in different clinical stages or molecular subtypes. Clinical stage and molecular subtype should also not be regarded as independent factors in deciding the treatment approach. Conclusions Receiving BCS+RT or MAST treatment does not affect the survival outcomes of young early-stage breast cancer patients, showing similar efficacy across various clinical stages and molecular subtypes. Choosing BCS+RT is considered safe for early-stage young female breast cancer patients eligible for breast conservation.
Breast cancer is a malignancy with the highest incidence and mortality rate among women in the world. The current treatment methods include surgery, chemotherapy, radiotherapy, endocrine therapy and targeted therapy. Triple negative breast cancer (TNBC) has high manignant behavior and poor prognosis, lacks specific treatment targets, thus resulting in few effective treatment modalities. The emergence of immunotherapy has provided hopes for TNBC. The efficacy of immunocheckpoint inhibitors in neoadjuvant treatment of early TNBC and first-line treatment of programmed death-ligand 1 positive metastatic TNBC. Therefore, this article reviews the researches of immunocheckpoint inhibitors in the treatment of early and advanced breast cancer.
目的 初步探討影響男性乳腺癌患者預后的因素。 方法 收集2003年1月－2011年12月經病理確診、接受治療、臨床資料較完整的36例男性乳腺癌患者的臨床資料。采用對數秩檢驗和Cox回歸分析影響男性乳腺癌患者預后的因素。 結果 36例患者無進展生存期（PFS）為3～95個月，中位PFS為45個月。單因素分析顯示：腫瘤直徑（P=0.001）、陽性淋巴結（P=0.001）、TNM分期（P＜0.001）、手術方式（P=0.001）是影響預后的因素。多因素分析顯示：陽性淋巴結（P=0.024）和TNM分期（P=0.022）是影響預后的主要因素。 結論 陽性淋巴結和TNM分期是影響預后的主要因素，以手術為主的綜合治療模式是提高男性乳腺癌患者生存率的重要措施。
【Abstract】Objective To investigate the expression of PCNA in gastric cancer and its relationship with telomerase activity of peritoneal washings and peritoneal dissemination, and to compare the efficacy of telomerase activity and cytology of peritoneal washings for prediction of peritoneal metastasis of gastric cancer. MethodsTelomeric repeated amplification protocol (TRAP)enzymelinked immunosorbent assay (ELISA) was performed to measure the telomerase activity of peritoneal washings collected from 60 patients with gastric cancer. Exfoliate cytologic analysis of the corresponding samples was used for comparison.Expression of PCNA was measured with immunohistochemical staining.Their relationship with clinicopathologic features were evaluated. ResultsThe positive rate of telomerase activity in peritoneal washing collected from patients with gastric cancer was 41.7%,which well related to serosal invasion, histology types, depth of infiltration and peritoneal metastasis of gastric cancer. The positive rate of telomerase activity increased with the increased depth of infiltration and serosal involvement areas (P＜0.05).The positive rate of exfoliative cytology was 25.0%, which was obviously high in the group with macroscopic peritoneal metastasis (the group of P1-3). The positive rate of exfoliative cytology also increased with the increased depth of infiltration and serosal involvement areas (P＜0.05). Although the positive rate of telomerase activity in peritoneal washing collected from patients with gastric cancer was not significantly higher than that of exfoliative cytology in general, it was significantly higher than that of exfoliative cytology in the group of pT4, P1-3 and undifferentiated type.The PCNA proliferation index (PI) of positive telomerase activity group was significantly higher than that of negative. The PCNA PI was significantly higher in the group of P1-3 and serosal invasion thanthat of P0 and without serosal invasion. ConclusionTo detect telomerase activity in peritoneal washings and to detect tumor cells by cytologic method are useful to predict subclinical metastasis to the peritoneum in patients with gastric cancer,but telomerase activity is more sensitive than the other one.Telomerase activity is well related to proliferating activity of gastric cancer,which was the very important reason of peritoneal metastasis and serosal invasion.
Objective To systematically review the diseases constitution of children in Chinese medical institutions from 2010 to 2016, and to provide evidence for establishing essential medicine list for children (EMLc) of China. Methods We searched PubMed, EMbase, The Cochrane Library, CBM, CNKI, VIP and WanFang Data from January 2010 to February 2016 to collect studies about diseases constitution of Chinese children. Two reviewers independently screened literature, extracted data, and assessed the risk bias of included studies, then data was descriptively analyzed. Results A total of 33 studies of diseases constitution were included, involving 1 797 696 children among 0 to 18 years from 17 provinces of China. Neonatal hyperbilirubinemia, neonatal pneumonia and premature were the main diseases of inpatient newborns. The main diseases of children hospitalized were pneumonia, upper respiratory tract infection and tumor. Upper respiratory tract infection, bronchopneumonia, bronchitis and diarrhea were the main diseases of outpatients. Hyperspasmia, upper respiratory tract infection and pneumonia were the main diseases of emergency patients. Diseases constitution of different medical institution: the main diseases were pathological jaundice, neonatal asphyxia and neonatal pneumonia in both tertiary and secondary medical institution in the newborn group. In the children group, the main diseases were pneumonia, upper respiratory tract infection and bronchitis in both tertiary and secondary medical institution. Besides these diseases, indigestion and fever of unknown origin were also the main diseases of primary medical institution. Disease constitution of different areas: in the newborn group, pathological jaundice, neonatal pneumonia and neonatal hyperbilirubinemia were the main diseases in coastal areas. Neonatal pneumonia, neonatal hyperbilirubinemia and premature were the main diseases in inland areas. Neonatal hyperbilirubinemia, neonatal pneumonia and neonatal hypoxic-ischemic encephalopathy were the main diseases in remote areas. In children group, pneumonia, bronchitis and premature were the main diseases in coastal areas. Pneumonia, bronchitis and hand-foot-and-mouth disease were the main diseases in inland areas. Upper respiratory tract infection, bronchopneumonia and bronchitis were the main diseases in remote areas. Conclusion Diseases constitutions of children vary in different medical institution, and because of extreme lack of date from primary medical institution, we suggest to carry out investigation in primary medical institution to provide evidence for EMLc. Diseases constitutions of children vary in different area, additions should be made according to local conditions when essential drugs of children selected. Newborn, as a special group of children, should be considered separately when EMLc of China established.