Objective: To compare the differentially expressed proteins between A549 cells and DDP (cisplatin)-resistant A549/DDP cells. Methods: A549 cells were exposed to DDP for developing the DDP-resistant A549/DDP cells. The differentially expressed proteins in the A549 and A549/DDP cells were separated and identified by proteomics approach. A part of the differentially expressed proteins were validated by real-time PCR, Western blotting and immunocytochemistry. The functions of these proteins were analyzed by bioinformatics method. Results: There were 8 differentially expressed proteins including POTE, FH (fumarate hydratase), PDE (phosphodiesterase), AKR1C1 (aldo-keto reductase family 1 member C1), DDH2 (dihydrodiol dehydrogenase 2), S100A10, prefoldin subunit 2, and karyopherin beta2- Ran GppNHp nuclear transport complex between A549 and A549/DDP cells, and the difference in expression was more than 5-fold. These proteins were related with cellular metabolism, apoptosis, cell proliferation, detoxification and signal transduction. The validation results of real-time PCR, Western blotting and immunocytochemistry were consistent with the results of proteomic analysis. Conclusion: The differentially expressed proteins between A549 and A549/DDP cells provide some new clues for the study of DDP-resistant lung cancer cells. Copyright© 2012 by TUMOR.

Objective To study the prevention and treatment effect of ω-3 fatty acids on intestinal mucosa in critical illness. Methods Forty patients including severe trauma, infection shock were enrolled as experimental group, while 30 healthy people as control group. At the same time, the patients in expermental group were randomly divided into group A and group B(20 cases each). While the patients were. Treated with low calorie parenteral nutrition totally, those in group A received ω-3 fatty acids additionally. The plasma concentrations of dimnine oxidase (DAO), endotoxin were detected by spectrophotography, and TNF-α was detected by ELISA. Results After treatment the concentration of DAO, endotoxin, TNF-α in group A and that of endotoxin in group B decreased significantly (P<0.05 ). While there was no significant difference of endotoxin levels between group A and group B. After therapy, DAO and TNF-α levels in group A were sig-nificantly lower than those in group B (P<0.05 ). The concentrations of DAO and TNF-α in group B were also significantly higher than those in control group (P<0.05). Conclusion ω-3 fatty acids can prevent and treat critical intestinal mucosa effectively.

BACKGROUND: Studies have confirmed that Atorvastatin drugs can increase the number of endothelial progenitor cells significantly in vitro, as well as the content of vascular endothelial growth factor(VEGF). OBJECTIVE: To investigate the effect of Atorvastatin on VEGF expression in necrotic femoral heads of rabbits. DESIGN, TIME AND SETTING: The randomized controlled animal experiment was performed at the Department of Orthopedic Surgery, Renmin Hospital of Wuhan University, from September 2007 to November 2008. MATERIALS: Forty-five male and female healthy New Zealand white rabbits weighing 2.5-3.5 kg were randomly divided into normal control group, model control group and AtorvastaUn group, 15 rabbits in each group. METHODS: Nitrogen refrigeration was used to develop femoral head necrosis models of rabbits in the model control and Atorvastatin groups. Two weeks after modeling, the animals in the Atorvastatin group were administered intragastically with Atorvastatin, normal control and model control group were treated with the same volume of normal saline. MAIN OUTCOME MEASURES: Each five rabbits were sacrificed at the 4th, 8th, and 12th weeks respectively for general observation, X-ray and histological observation. VEGF protein expression was assessed by immunohistochemistry method and VEGF mRNA level was assessed by reverse transcription - polymerase chain reaction method. RESULTS: The VEGF protein and mRNA levels in the model control and Atorvastatin groups were obviously lower than those in the normal control group, while the VEGF protein and mRNA levels in the Atorvastatin group were much higher than those in the model control group at the 8th and 12th weeks alter the treatment with Atorvastatin (P < 0.05). CONCLUSION: Atorvastatin can significantly upregulate the expression of VEGF, which is probably an effective clinical treatment to avascular necrosis of the femoral head.

Objective To evaluate the application of 64-slice computed tomography (CT) and software-assisted image analysis in preoperative evaluation and surgical planning of hilar cholangiocarcinoma. Methods The clinical data of six patients with hilar cholangiocarcinoma who were admitted to The First Affiliated Hospital of Sun Yat-sen University from June to December, 2009 were retrospectively analyzed. All six patients underwent 64-slice CT scanning before the operation, and then three-dimensional (3D) reconstruction of the liver, tumor, blood vessels and bile ducts was achieved with the assistance of Myrian (R) XP-Hepatic software. The relationships of the tumor, blood vessels and bile ducts were illustrated in the 3D model. Virtual liver resection was carried out for surgical planning. Results The 3D models of the liver, tumor, blood vessels and bile ducts were successfully constructed . The 3D models were able to be rotated and magnified as necessary. Preoperative evaluation and surgical planning were in accordance with actual surgery. The relative accuracy of the software-assisted image analysis system for calculating the hepatic volume to be resected was 5%. Patients recovered well without occurrence of hepatic failure. Conclusion Sixty-four-slice CT scanning and software-assisted image analysis are important for preoperative evaluation and surgical planning of hilar cholangiocarcinoma.

BACKGROUND: Obesity is serious complex disease determined by multiple genetic factors. Body mass index (BMI) is a common phenotype for obesity. Although some candidate genes have been shown to be related with BMI variation, the underlying substantial relationship remains poorly understood.OBJECTIVE: To investigate whether estrogen receptor-α (ER-α) Pvull genetic polymorphism is associated with BMI variation.METHODS: In total 390 premenopausal women from a local population of Nanchang City in Jiangxi Province People's Hospital.Body weight and height were measured. All participants were genotyped at the ER-α Pvull locus using polymerase chain reaction-restriction fragment length polymorphism.RESULTS AND CONCLUSION: The ER-α Pvull genotype frequencies of PP, Pp and pp were 0.133, 0.485 and 0.382,respectively. The distribution of ER-Pvull genotypes was in accordance with Hardy-Weinberg equilibrium (HWE) (P ＞ 0.05).There was no significant correlation between ER-α Pvull genetic polymorphism and BMI variation (P = 0.338). These findings indicate that ER-α Pvull genetic polymorphism does not greatly affect BMI variation of premenopausal women in Nanchang region.

Objective To determine the relationship between the viral load of cerebrospinal fluid (CSF) and sensorineural hearing loss (SNHL) in newborns with symptomatic congenital cytomegalovirus (CMV) infection.Methods The study cohort comprised 36 newborns with symptomatic congenital CMV infection.CSF from all of the patients were analyzed for the presence of CMV DNA by PCR.Audiological function were performed on them by brain stem auditory evoked potential at birth,at 6 and 12 months of age.Results (1)Of the 36 newborns,15 cases (41.7％) had positive CSF PCR result,17 cases (47.2％) had SNHL.(2) The prevalence of SNHL in the group of newborns with positive CSF PCR result was 60.0％ (9/15),and it was 38.1％ (8/21) in the group of newborns with negative CSF PCR result,there was no significant difference of the prevalence of SNHL between the two groups (P =0.194).(3) In newborns with positive CSF PCR result,the amounts of CSF CMV DNA was not different between the newborns with SNHL and normal hearing (3.35 ± 0.68 vs.3.17 ± 0.56,P =0.36).Conclusion A positive CSF PCR result and the CMV viral load of CSF did not correlate with SNHL.

Objective: To evaluate the efficiency and safety for single-incision laparoscopic appendectomy (SILA) and conventional laparoscopic appendectomy (CLA). Methods: The literature of randomized controlled trials (RCTs) concerning SILA versus CLA was retrieved by searching the electronic databases from the inception date to May 2014. Methodological quality of the included trials was assessed by using the Cochrane Reviewers’ Handbook criteria, and the data were extracted and subjected to Meta-analysis by using RevMan 5.1 analysis sotfware. Results: A total of 1183 patients were ifnally selected atfer the screening. Among them, 582 cases underwent SILA and 601 cases underwent CLA. Meta-analysis results demonstrated that SILA was associated with higher conversion rate (RR=4.38, 95% CI 1.96–9.79,Z=3.59,P=0.0003), longer operative time (RR=4.83, 95% CI 1.57–8.09,Z=2.90,P=0.004), shorter length of hospital stay (WMD=?0.11, 95%CI ?0.21–?0.01,Z=2.02,P=0.04), and better scores for the postoperative appearance of incision (WMD=0.94, 95%CI 0.49–1.40,Z=4.06,P<0.001) compared with CLA; no signiifcant difference was observed in postoperative complications and postoperative pain scores (RR=1.03, 95% CI 0.74–1.45,Z=0.18,P=0.86; WMD=?0.19, 95%CI ?0.59–0.20,Z=0.95,P=0.34) between the 2 groups. Conclusion: For patients under the conditions of the strict selection, SILA is a safe and effective procedure for the treatment of adult acute appendicitis, especially apply to those who care about incision appearance.

Objective To explore the clinical application value of plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) in diagnosis and treatment of symptomatic patent ductus arteriosus (sPDA) in preterm infants. Methods A total of 107 preterm infants with gestational age of 28-32 weeks and birth weight less than 1500 g who were admitted to the neonatal intensive care unit from October 2013 to September 2014 were recruited. Plasma NT-proBNP were on 4th and 7th day after birth. The echocardiography examination was performed within 30 minutes after the blood was drawn. According to the echocardiography examination on 4th day after birth, the infants were divided into the patent ductus arteriosus (PDA) group (n?=?39) and the control group (n?=?68). According to whether there were signiifcant hemodynamics changes of ultrasonography and clinical symptoms, the PDA group were classiifed into the sPDA group (n?=?20) and the asymptomatic PDA group (asPDA, n?=?19). Then according to whether ibuprofen was taken, the sPDA group was further divided into treatment group (n?=?13) and non-treatment group (n?=?7). Results On the 4th day after birth, the level of plasma NT-proBNP in the sPDA group was signiifcantly higher than that in asPDA group, and the level of plasma NT-proBNP in asPDA group was signiifcantly higher than that in the control group (P??0.05). In the treatment group, the level of plasma NT-proBNP on the 7th day after birth was signiifcantly lower than that on the 4th day after birth (P??0.05). In PDA group, the level of plasma NT-proBNP on the 4th day after birth was positively correlated with ductus arteriosus (DA) diameter, ratio of the left atrium to aortic root diameter (LA/AO ratio) and transductal diameter-to-left pulmonary artery ratio (TDD/LPA) (r?=?0.498-0.670, respectively). The area under receiver operator characteristic (ROC) curve for prediction of sPDA by the plasma NT proBNP on the 4th day after birth was 0.969 (95%CI:0.938-1.000). When the NT-proBNP was 13964 pg/ml on the 4th day after birth, the sensitivity for diagnosis sPDA was 95%, the speciifcity was 95.4%. Conclusions The level of plasma NT-proBNP is signiifcantly higher in preterm infants with sPDA and is decreased after treatment. Plasma NT-proBNP on the 4th day after birth is a sensitive marker for predicting sPDA. Dynamic monitoring of plasma NT-proBNP has important clinical value in selection of the treatment strategy in preterm infants with PDA.

Objective: To study the effects of total flavonoids of Astragalus on apoptosis of bovine retinal capillary pericytes(BRPs) under high glucose.Methods: The third generation of nearly symphysic bovine retinal vessel pericytes cultivated in vitro were divided into normal control group,high glucose group,and Astragalus total flavonoids groups(0.25,0.5,1.0,2.0 mg/ml) at random.After being incubated for 6 days,apoptosis of BRPs were detected by TUNEL method.TBA method was used to detect the contents of MDA.Xanthine oxidase method was used to detect the SOD activities.Results: Compared with high glucose group,the apoptosis,MDA contents,SOD activity,MDA content/SOD activity of BRPs reduced markedly in total flavonoids of Astragalus groups(0.5,1.0,2.0mg/ml)(P

BACKGROUND: An ideal repairing material characterizes by both great biocompatibility and osteogenesis ability. Any biomaterials should meet excellent biological security and biocompatibility prior to clinical application.OBJECTIVE: To evaluate the biocompatibility and the biological security of the TiO_2-Ag-nano-hydroxyapatite/polyamide66 (TiO_2-Ag-nHA/PA66) composite.DESIGN, TIME AND SETTING: A randomized controlled duplicated design was performed in Chongqing Medical University from July 2008 to July 2009.MATERIALS: A total of 40 Kunming mice aged 3 weeks and of clean grade and 32 healthy adult New Zealand rabbits were provided by Experimental Animal Center of Chongqing Medical University. TiO_2-Ag-nHA/PA66 composite powder (10 g),TiO_2-Ag-nHA/PA66 composites (n=32, 5 mm ×25 mm), and TiO_2-Ag-nHA/PA66 composites (n=32, 3 mm × 5 mm) were provided by Research Center of Nano-Biomaterials of Sichuan University.METHODS: General toxicity test: Forty mice were randomly divided into experimental and control groups. Composite powder was used to prepare leaching liquor which was treated on experimental mice by an intraperitoneal injection. While, an equal amount saline was inserted into the control mice. Intramuscular implanting test: The 16 rabbits were randomly divided into experimental and control groups. Two TiO_2-Ag-nHA/PA66 composite (5 mm × 25 mm) were implanted into left and right erector spinae, respectively. A similar surgery with the exception of implantation was performed on the control rabbits. Intrabony implanting test: The resting 16 rabbits were implanted one TiO_2-Ag-nHA/PA66 composite (3 mm × 5 mm) into left and right lateral epicondyle, respectively. Hemolytic test: A 8-mL anti-coagulation blood was obtained and added with composite powder (0.1,0.15, and 0.2 g).MAIN OUTCOME MEASURES: Biocompatibility and biological security of TiO_2-Ag-nHA/PA66 composite.RESULTS: General toxicity test demonstrated that mice in the two groups had good activity and eating, normal breathing, stable body mass, no paralysis, convulsion, and death. Intramuscular implanting test and intrabony implanting test showed that there was no significant difference in levels of alanine aminotransferase, aspartate transaminase, urea nitrogen, and creatinine and leukocyte numbers between the two groups before implantation and at day 4,1 week, and 2 weeks after implantation (P> 0.05).In particular, there was no significant difference in the experimental group at varying time points (P> 0.05). Intramuscular implanting test indicated that tissue sections in the experimental group displayed coated tissue of materials. The inflammatory variation in the experimental group was generally similar to that in the control group. Intrabony implanting test indicated that tissue sections in the experimental group displayed new bone formation. Hemolytic test suggested that hemolytic ratio of three varying concentrations of TiOrAg-nHA/PA66 composites was less than 5%, which met the normal criterion.CONCLUSION: TiO_2-Ag-nHA/PA66 composite has a good biocompatibility and biological security.