Female ; Fibromatosis, Abdominal ; diagnostic imaging ; pathology ; surgery ; Humans ; Middle Aged ; Radiography ; Rupture, Spontaneous ; surgery

Objective To explore the effects of adriamycin-loaded immuno-nanoparticles on multidrug resistance (MDR) of hepatoma cell line SMMC-7721/ADM. Methods The cytotoxicity of the adriamycin-loaded immuno-nanoparticles on the bepatoma cell line SMMC-7721/ADM in vitro and the tumor cell-binding ability of adriamycin-loaded immuno-nanoparticles were detected. Results The effect of the cytotoxicity of adriamycin-loaded immuno-nanoparticles on the hepatoma cell line SMMC-7721/ADM was significantly better than that of adriamycin-loaded nanoparticles. Adriamycin-loaded immuno-nanoparticles had the specific binding ability with the hepatoma cell line SMMC-7721/ADM. Conclusions Adriamycin-loaded immuno-nanoparticles can overcome the MDR of the tumor in vitro. The mechanism may be that immuno-nanoparticles could adhere to the tumor cell membrane, and the release of the loaded adriamycin creates a high local concentration in the extracellular medium. The increased concentration gradient improves the diffusion of adriamycin from the extracellular medium to the intracellular medium.

Objective To evaluate the multi-spiral CT(MSCT)imaging features and classification of renal pelvis carcinoma.Meth-ods 76 patients of renal pelvis carcinoma proved pathologically were analyzed retrospectively,and divided into different types ac-cording to the MSCT features.The MSCT differences for different types were analyzed.Results Most of the tumors showed iso-density or slight hyperdensity (95%)on un-enhanced images,and persistent mild-to-moderate enhancement (91%)in enhanced im-ages.All cases were divided into three types:pelvic mass type in 30 cases (39%),substance invasion type in 25 cases (33%),wall thickening type in 21 cases (28%).All cases were also divided into two types:substance invasion type(25 cases,33%)and renal pelvis type(5 1 cases,67%).The occurrence rate of local low enhancement,whole kidney low enhancement,hydronephrosis,lymph node metastasis and vein tumor thrombus were 80%,20%,48%,52%,1 6% in substance invasion type cases,and 4%,42%, 75%,4%,6% in the renal pelvis type cases,respectivily.Conclusion MSCT multiphase enhancement scanning shows important valuation in the diagnosis and classification of renal pelvis carcinoma.Obvious differences of CT features are showed for different types.The diagnosis accuracy may be improved by the knowledge of substance invasion type.

In order to explore the effects of metformin combined with cyproterone acetate (CPA) on the clinical features, endocrine and metabolism of the patients with polycystic ovarian syndrome (PCOS), 50 cases of non-obese PCOS were randomly subjected to CPA (CPA treatment group, n = 25) and CPA+ metformin (n = 25) treatment for 6 months. Before and after treatment the body mass index (BMI), waist : hip ratio (WHR), ovarian volume, serum gonadotrophin, androgen and sex hormone-binding globulin (SHBG) levels, and fasting lipid, glucose and insulin levels were measured. The results showed that all of the parameters in two groups were similar before treatment. After treatment for 6 months in the CPA+ metformin group, BMI and WHR were significantly decreased, while insulin sensitivity was significantly decreased as Compared with those before treatment. In CPA group, no significant changes were found before and after treatment. Combined use of CPA and metformin could result in the reduction of serum androstenedione and increases of serum SHBG levels as compared with the CPA treatment alone. It was concluded that combined use of CPA and metformin could improve the insulin sensitivity, and further suppress the hyperandrogenism in non-obese women with PCOS.
Androgen Antagonists/therapeutic use ; Androstenedione/blood ; Body Mass Index ; Cyproterone Acetate/*therapeutic use ; Drug Therapy, Combination ; Hypoglycemic Agents/*therapeutic use ; Insulin Resistance ; Metformin/*therapeutic use ; Polycystic Ovary Syndrome/*drug therapy

Objective To investigate the prognostic relevant factors of hepatocellular carcinoma (HCC) in recipients following liver transplantation (LT).Methods The clinical data of 147 cases of HCC undergoing LT between Aug. 2004 and Feb. 2011 in Nanfang Hospital were studied retrospectively.Those of significance in 14 relevant factors involving gender,age,blood-type,CTP,model of end-stage liver disease (MELD),alpha-fetoprotein (AFP),tumor number,cumulative diameter of tumor,tumor occupying proportion of the liver,bilobar involvement,envelope invasion,macrovascular invasion,and microvascular invasion (MVI),HCC histology differentiation,which were based on univariate analysis with Log-Rank,were analyzed by means of Multivariate Cox proportional hazard regression model to screen out independently relevant ones.Results 143 cases were followed up.The follow-up duration ranged from 6 to 84 months.The 1- and 3-year cumulative survival rate was 75.2％ and 54.7％ respectively.The tumor free 1- and 3-year cumulative survival rate was 70％ and 59％ respectively.Univariate ananlysis revealed that age,AFP,tumor number,cumulative diameter of tumor,tumor occupying proportion of the liver,bilobar involvement,envelope invasion,macrovascular invasion,and MVI had significant difference, In a Cox model,MVI,macrovascular invasion and AFP≥ 400 μg/L were independent prognostic factors.Conclusion MVI,macrovascular invasion and AFP are the main prognostic risk fators.Intervention and non-tumor technique should be performed preoperatively and intraoperatively,respectively.

Australia ; General Surgery ; education ; Internship and Residency ; Job Satisfaction ; New Zealand

Human astrovirus (HastV) is recognized as one of the leading causes of acute viral diarrhea in infants. The HastV non-structural protein, nsPla, and C-terminal protein, nsPla/4, contain various conserved functional domains,and may play an important role in virus replication, transcription and the virus-host interactions of HastV. This study used an E. coli system to investigate the expression of nsPla and nsPla/4 proteins. Firstly,the nsPla and nsPla/4 genes of HAstV-1 were cloned into the prokaryotic expression vector,PGEX-4T-1, to build the PGEX-4T-1a and PGEX-4T-la/4 fusion protein plasmids. Then, the recombinant plasmids were transformed into Escherichia coli BL21 (DE3) and induced with isopropyl-β-D-thiogalactopyranoside (IPTG). The optimal expression conditions of the two fusion proteins were identified and then analyzed by polyacrylamide gel electrophoresis (SDS-PAGE) and western blotting, respectively. The results showed that the pGEX-4T-la fusion protein was maximally expressed at 30 °C after 12 hours of induction with 1.0 mM IPTG. The pGEX-4T-la/4 fusion protein was maximally expressed at 20 °C after 8 hours of induction with 0.5 mM IPTG. Western blot analysis showed that the two fusion proteins specificity reacted with the anti-nsPla and anti-GST monoclonal antibodies, respectively. This study successfully obtained the HAstV non-structural protein, nsP1a, and its C-terminal protein nsP1a/4 protein using an E. coli system. This novel study lays the foundation for future research into the pathogenic mechanisms of human astrovirus and the functions of its non-structural protein.
Cloning, Molecular ; Escherichia coli ; genetics ; metabolism ; Gene Expression ; Humans ; Mamastrovirus ; genetics ; metabolism ; Viral Nonstructural Proteins ; genetics ; metabolism

AIM:To study the relationship between expression of p53 protein and AgNORs count and histological grade in pancreatic adenocarcinoma.METHODS:Fifty-six patients with pancreatic adenocarcinoma and 25 normal pancreatic tissue were examined for mutant P53 protein by immunohistochemistry,silver binding nucleolar organizer regions(AgNORs)were counted in cancer cells,and histological grade was observed in pancreatic adenocarcinoma.RESULTS:P53 protein positive expression was 50% in pancreatic adenocarcinoma,P53 protein expression was negative in all normal pancreatic tissue.There is a significant difference in P53 expression between normal pancreatic tissue and pancreatic adenocarcinoma tissue.The mean AgNORs count was 9.14?2.08 in group with P53 protein positive expression,and 5.99?1.84 in group with P53 protein negative expression group.The P53 expression was associated with AgNORs significantly.The P53 expression was significantly related with histological grade,and AgNORs count was also significantly related with histological grade.CONCLUSION:P53 may be closely related to carcinogenesis and development of pancreatic adenocarcinoma.P53 protein expression and AgNORs count might be a useful prognostic factor in pancreatic adenocarcinoma.

Objectives To evaluate the predictive value of the revised model for end-stage liver disease in the clinical early stage after liver transplantation.Methods The clinical data of 218 patients were retrospectively analyzed.After calculating the MELD score,ReFit MELD score and ReFit MELDNa score before transplantation,we compared the predictive accuracies of these scoring systems using the area under curve (AUC) of the receiver operating characteristic.The groups were categorized with the cut-offs of the MELD,ReFit MELD and ReFit MELDNa,and the early-stage complications and mortality in the different groups were analyzed.Results The AUC for the MELD,ReFit MELD and ReFit MELDNa were 0.737 (95％CI 0.621～0.854),0.727 (95％CI 0.663～0.785) and 0.735 (95％CI 0.671～0.792),respectively.There was no statistical difference is the AUC among the MELD,ReFit MELD and ReFit MELDNa.Elevated scores in the 3 models predicted higher rates of pulmonary infection,abdominal infection and acute renal dysfunction,as well as a higher mortality.Conclusions The ReFit MELD score and ReFit MELDNa score were relatively useful predictors of short-term survival rates after liver transplantation.The predictive accuracy was similar to the MELD score.Values of the score above the cutoff values indicated higher rates of complication and poorer prognosis.