Objective To review the recent studies on the multidrug resistance of breast cancer. Methods The literatures of recent years on the studies of multidrug resistance, multidrug resistance protein and breast cancer resistance protein were reviewed. Results Multidrug resistance resulted from multiple factors. How to identify the sensibility of chemotherapy drugs and select individual therapeutic regime early were important to improve the survival rate and life quality of breast cancer patients.Conclusion These studies on multidrug resistance of breast cancer are helpful to predicting the effect and outcome of chemotherapy and overcoming the barrier of drug resistance.

Objective To determine the investigation progression on exemestane in the treatment of breast cancer. Methods The literatures of recent years on the studies of exemestane were reviewed. Results Exemestane is an effective steroidal aromatase inactivator with superior tolerability, safety and efficacy in the adjuvant, neo-adjuvant and metastatic therapy of breast cancer. Conclusion With the progression of clinical trial with exmestane, exemestane will be regarded as an important drug in comprehensive therapy of breast cancer.

Objective To investigate the expression of MTSS1 in cholangiocarcinoma tissue and its relationship with the prognosis of patients.Methods The specimens of bile duct of 49 patients with hilar cholangiocarcinoma who received surgical excision at the Eastern Hepatobiliary Surgery Hospital from January 2003 to December 2005 were collected.Tissue microarrays of the 49 samples of hilar cholangiocarcinomas and the 10samples of adjancent normal bile duct epithelial tissue were constructed.The expression of MTSS1 was detected by the immunohistochemical staining.The pcDNA3.1-MTSS1 was transferred into the RBE cells and the abilities of proliferation of REB cells were measured by MTT assay.The patients were followed up via out-patient examination and telephone till May 2012.The measurement data were analyzed using the t test,and the count data were analyzed using the chi-square test,the survival curve was drawn by the Kaplan-Meier method,the survival was analyzed using the Log-rank test,and multivariate analysis was done using the COX regression model.Results The results of immunohistochemical staining showed that the expression rate of MTSS1 was 10/10 in the adjacent normal epithelial tissue of bile duct,while 59.2％ (29/49) in the cholangiocarcinoma tissues.The proliferative rate of cholangiocarcinoma cells transfected with MTSS1 was 1.55 ±0.05,which was significantly lower than 2.32 ±0.08 of cholangiocarcinoma cells without transfection of MTSS1 (t =4.454,P ＜ 0.05).Gender,age,TNM stage,T stage,differentiation,neural invasion and diameter of tumor did not influence the expression of MTSS1 (x2=0.211,3.471,0.507,0.507,0.368,0.882,0.660,P ＜ 0.05),while lymph node metastasis influenced the expression of MTSS1 (x2=10.436,P ＜ 0.05).All the patients were followed up for 1-59 months,and the median time for follow-up was 16 months.The median tumor-free survival time was 17.9 months in patients with positive expression of MTSSI,and 11.3 months of patients with negative expression of MTSS1,with no significant difference (Log-rank value =3.707,P ＞ 0.05).The median survival time was 34.9 months in patients with positive expression of MTSS1,which was significantly longer than 18.7 months of patients with negative expression of MTSS1 (Log-rank value =5.671,P ＜0.05).Multivariate analysis showed that MTSS1 was not the independent risk factor influencing the prognosis of patients (x2 =0.406,P ＞ 0.05).Conclusions The expression of MTSS1 is decreased in cholangiocarcinoma tissue,which negatively correlates with lymph node metastasis.MTSS1 could be used as a biomarker in predicting the prognosis of patients with cholangiocarcinoma.

Objective To compare the clinical effectiveness between puncture drainage and surgery in the treatment of pyogenic liver abscess.Methods Clinical date of 81 patients with pyogenic liver abscess were retrospectively analyzed.Patients were divided into the ultrasound-guided puncture drainage group (48 patients) and open surgical drainage group (33 patients).The demographic data,laboratory examination,efficient rate,complication rate,mortality,time for body temperature returned to normal and hospital stays were compared between the two groups.Results Klebsiella pneumoniae was positive in 45.45％ cases by blood culture,and in 62.50％ cases by pus culture.There was no statistically significant difference in the effective rate and mortality (x2 =0.91,2.05,P ＞ 0.05).For patients with puncture drainage hospital stay was (14 ± 5) days,significantly shorter than (17 ± 5) days in surgery group (t =-3.20,P ＜ 0.05).Time to normal temperature was (5.1 ± 1.6) days in puncture drainage group,which was shorter than (6.0 ± 1.1) days in open surgery group (t =-2.85,P ＜ 0.05).Postoperative complications were fewer in the puncture drainage group (6 cases) than open surgery group (10 cases) (x2=3.91,P ＜ 0.05).Conclusions Ultrasound-guided puncture drainage for liver abscess is safe,feasible,effective of low complication rate for the treatment of pyogenic liver abscess.

Objective:To study the social psychology of people when facing severe acute respiratory syndrome(SARS),a sudden social crisis.Methods:Using the social psychological methods,we analyzed the manifestations,causes and hazards of the public fear derived from the outbreak of SARS in China.Results:Sudden outbreak of SARS made people full of uncertainty and fear,and such fear would bring adverse effects to the society.It affected not only the daily life of people,but aslo their physical, mental stability and behavior reaction.Conclusion:SARS makes us realize the importance of psychology and psychiatry to individuals and to the society.It is imperative to establish a comprehensive provention and intervention system of diseases to maintain the social stability and the well being of individuals.

Objective To explore the clinical curative effect and complications of digital three-dimensional molding of titanium mesh for repairing skull defect. Methods The clinical data of 42 patients having underwent repairing skull defect with three-dimensional molding of titanium mesh were retrospectively analyzed. Results The average operation time was about 2 h, and 42 patients were operated successfully. The bilateral skull was symmetry and the appearance was good. In 42 patients, subcutaneous dropsy occurred in 1 case, epilepsy occurred in 3 cases, and intracranial bleeding again surgery occurred in 1 case. Patients were satisfied with the results of cranioplasty. Conclusions Repairing skull with digital three-dimensional molding of titanium mesh is simple, with shorter operation time, lower operation risk, and lower postoperative complication, and the clinical curative effect is satisfactory.

Objective To explore the change of dietary intake and nutritional status before and after hematopoietic stem cell transplantation (HSCT) in pediatric patients to assess the importance of nutritional interventions.Methods In this observational cohort study,65 children undergoing HSCT between January 2012 and November 2012 in the Department of Hematology and Oncology,Shanghai Children's Medical Center were enrolled.The data collected before preconditioning were considered as the baseline data.We also collected data twice a week between preconditioning and 30 days after HSCT,and once a week from 30 days to 100 days after HSCT.Dietary analysis and urea nitrogen analysis were conducted in parallel.Results The baseline level of energy intake was (5 844.9 ±2 490.4) kJ/d,protein intake was (56.4 ±28.6) g/d,fat intake was (49.7 ±38.9) g/d,and carbohydrate intake was (190.9 ± 91.1) g/d.With the hematopoietic reconstruction,the oral nutrients intake significantly decreased compared with the baseline levels (all P =0.000).During the recovery period after HSCT,the energy intake showed no significant difference when compared with the baseline level in the 6th postoperative week,protein in the 13th week,carbohydrate in the 4th week,and fat in the 6th week.The urine nitrogen was (3.9 ± 2.4) g/d before HSCT,which increased to (16.7 ± 11.0) g/d after preconditioning (P=0.000).In the 1st postoperative week,the weight (P =0.000),triceps skin fold thickness (P =0.003),mid-upper arm circumference (P =0.000),serum albumin (P =0.000) and prealbumin (P =0.000) of the patients all significantly decreased compared with the baseline levels.In the 9th postoperative week,the fat-free body weight percentage (P =0.010),muscle percentage (P =0.001) and protein percentage (P =0.000) were significantly lower than the baseline levels,while the body fat percentage was higher than the baseline level (P =0.002).Conclusions Children undergoing HSCT exhibit a marked reduction in nutrient intakes at the early stage of HSCT,which may gradually return normal during the recovery period.This process may be slow,especially for the protein,and therefore may affect the serum protein level in these pediatric patients.Thus,more careful nutrition guidance is necessary during HSCT for pediatric patients,emphasizing oral nutrients intakes,and high protein dietary or formula may be helpful.

Objective To observe the different expression of somatomedin-receptor in cell membrane of prostate epithelial cells at anoxic or normoxic condition.Methods Human prostate epithelial cells line RWPE-1 were cultured in vitro.At 4,8,12,24,48 h after cells had been seeded,the gene and protein expression of epidermal growth factor receptor (EGFR),fibroblast growth factor receptor (FGFR),transforming growth factor β1 receptor (TGF- β 1R),insulin-like growth factor-1 receptor (IGF-1 R) and vascular endothelial growth factor receptor (VEGFR) in prostate epithelial cells were tested by RT-PCR and immunohistochem-istry methods,respectively.Results The expression of mRNA and protein of EGFR,FGFR,IGF-1R,TGF- β1R,VEGFR were significantly increased in anoxic and normoxic prostate epithelial cells (P ＜ 0.01 ).At different time point,the expression of mRNA and protein of EGFR,FGFR,IGF-1R,TGF- β1R,VEGFR significantly higher in anoxic than those in normoxic prostate epithelial cells (P＜ 0.01 )besides 4 h EGFR mRNA,12 h EGFR protein,4 h IGF-1R mRNA,4 and 8 h IGF-1R protein,4 and 8 h TGF-β 1R mRNA,4 and 8 h TGF-β 1R protein,4 h VEGFR mRNA (P ＞ 0.05).Conclusion Anoxic prostate epithelial cell can up-regulate the expression of somatomedin-receptor.

Objective To analyze diagnostic value of renal biopsy in living-related kidney transplantation and the influence of kidneys from marginal donors on the early prognosis of recipients. Methods According to donors age and risks of donors, 142 living-related kidney transplant recipients from February 2004 to July 2008 were divided into marginal donor group (51 cases) and non-marginal donor group (91 cases). Renal biopsy was performed on 49 kidneys Postsurgical serum creatinine (Scr), the lowest Scr and post-transplant complications were analyzed between the two groups. Results Pathological changes were detected in 13 cases. The Scr at 4 weeks, 12 weeks, 6 months post-transplant and the lowest level of Scr in marginal donor group were higher than those in non-marginal donor group (all P<0.05). There were no significant differences of Scr levels at 12 months, 24 months, 36 months post-transplant, the time required to return to the lowest Scr, and post-transplant complications between two groups (all P>0.05). Conclusions The early clinical efficacy of the marginal donor is ideal, but the baseline of Scr of recipients is higher than that of recipients with kidneys from non-marginal donors. Renal biopsy has an important diagnostic and therapeutic value for both donors and recipients.

Objective To analyze the influence of donating kidney of marginal donors on the early prognosis of living-related kidney transplant recipients.Methods Sixty-six cases of living-re-lated kidney transplant patients between February 2004 and September 2007 were divided into the marginal donors group(28 cases)and non-marginal donors group(38 cases).Serum creatinine before and after surgery,creatinine clearance after surgery and perioperation complications were compared respectivelv between the 2 groups.Results The serum creatinine levels in the marginal donors group and non-marginal donors group were 154,131,127μmol/L and 132,117,118 ttmol/L on 7th day,1st month and 3rd month after transplantation respectively,and there were no significant differences between the 2 groups(P＞0.05).The serum creatinine level in parent-child donating kidney of the 2 groups Was 160,131,126μmol/L and 132,129,126μtmol/L on 7th day,1st month and 3rd month after transplantation respectively,and there were no significant differences too(P＞0.05).There was no difference in the rate of perioperation complications and creatinine clearance after kidney transplantation between the 2 groups.Conclusions The early prognosis of marginal donors'recipients is ideal.The marginal donors could be selected as the living-related kidney transplant donors,especially between parent and child,as long as they are evaluated according to stricter criteria.But the long-term prognosis of the recipients should be further observed.