Objective To evaluate the clinical effects in treating periprosthetic femoral fractures classified Vancouver B2 with a cementless modular revision femoral prosthesis.Methods Twenty-six patients (7 males and 19 females with mean age of 66.5 years,range 60-69 years) who suffered from periprosthetic femoral fractures classified Vancouver B2 were treated with a cementless modular revision femoral prosthesis in hip revision and open reduction and internal fixation with cables or plates from March 2007 to February 2014.The previous femoral prostheses included 21 cementless and 5 cemented hip stems.The period from former procedures to fractures was 16 months,range from 7 to 32 months.Harris hip scores and numerical rating scales were analyzed statistically.Time of leaving bed,discharging,fracture union postoperative complications and radiographic imaging were also recorded.Results The operation duration were 143 (range 105-165) minutes.Blood loss volume was 450 (range 270-780) ml.Blood transfusion volume were 330 (range 0-800) ml.All patients were followed up at least two years,averagely 3.5 years after surgeries.All fractures healed at 6.5 (range 3-12) months averagely after surgeries.Harris hip scores improved significantly from 11.8±2.5 before surgeries to 80.3±5.3 one month and to 91.4±7.3 six months after surgeries separately (F=0.715,P=0.001).Numerical rating scales were 9.6±0.3,9.4±0.4 and 9.1±0.7 points averagely in aspect of information acquisition,postoperative pain control and function recovery respectively one month after surgeries.Average time of leaving bed and discharging from surgeries was 68.3 (range 51-75) hours and 6.5 (range 5-9) days respectively.No postoperative complications was found except dislocation in 1 hip,lower limb discrepancy in 1 hip,DVT in 1 hip,and heterotopic ossification in 3 hips.Conclusion Due to achieving prosthetic stability and fracture union,periprosthetic femoral fractures classified Vancouver B2 treated with a cementless modular revision femoral prosthesis combined with open reduction and internal fixation with cables or plates can reach good clinical outcomes.

Objective To investigate the systemic stress responses after laparoscopic resection in colorectal cancer patients.Methods Sixty patients were randomized into the laparoscopic resection group (30 cases) and open resection group (30 cases) from October 2001 to September 2002 in our hospital.Analgesic dosages, recovery time of intestinal peristalsis, postoperative temperatures, C reactive protein(CRP), IL 6 and white blood cell (WBC) counts were recorded after operation. Results The changes of postoperative temperatures and WBC counts showed no significant difference between two groups.But in the laparoscopic resection group, the recovery time of intestinal peristalsis, postoperative analgesic dosages, CRP and IL 6 significantly decreased ( P

The research and development of monoclonal antibodies (mAbs) is a rapidly developing field. From the first generation of murine mAbs to the fourth generation of fully human mAbs, the efficacy and safety of mAbs in the treatment of various diseases have been continuously improved. In order to regulate the development and evaluation of mAbs, drug regulatory agencies and pharmacopeias of America and China have tried to issue feasible test procedures and acceptance criteria for quality evaluation of mAbs and biosimilars. Mass spectrometry (MS) technique with high sensitivity, resolution, selectivity, and specificity has become an important tool to evaluate the quality characteristics of monoclonal antibody-related products or specify mAb quality. The research of MS-based monoclonal antibody study involves structure characterization, impurity analysis, pharmacokinetics/pharmacodynamics (PK/PD), etc. This review focuses on the current quality control requirements of mAb related products and the development of MS technique for mAb quality characterization and specification. It is expected to provide information and references for evaluating the quality of monoclonal antibodies under research and development.

In recent years, the biopharmaceutical industry has grown rapidly, and the market size of monoclonal antibody drugs has increased significantly. Accurate structural characterization and quality control are the supporting technologies for the development of monoclonal antibody drugs. As a significant post-translational modification of antibody drugs, glycosylation has an important influence on its efficacy, stability, and immunogenicity. The existing literature usually uses liquid chromatography-mass spectrometry to perform major glycosylation modifications of monoclonal antibody drugs. Characterization, there are few studies on low-abundance glycosylation, but the characterization and control of low-abundance glycosylation cannot be ignored. In this study, we have established a qualitative and quantitative analysis technology for N-glycans based on RapiFluor-MS reagent-labeled monoclonal antibody drugs. This method has a short sample processing time and high sensitivity. It can not only characterize the main glycoforms of three monoclonal antibody drugs (adalimumab, bevacizumab, and trastuzumab) but also can quantify low-abundance N-glycans. The results of the study showed that the main glycoforms specified in the Pharmacopoeia could be detected in different batches of monoclonal antibody drugs, but the content of N-glycans in different batches of samples is not identical. After that, we analyzed the N-glycans connection sites and glycoforms at the intact glycopeptide level, further enriching the N-glycans structure information of the monoclonal antibody. The qualitative and quantitative analysis technology of N-glycans based on RapiFluor-MS reagent-labeled monoclonal antibody drugs can realize the in-depth characterization and control of glycosylation modification of monoclonal antibody drugs.

Objective To analyze the effect of different anesthesia methods for postoperative patients with abdominal operation on cognitive function .Methods A total of 418 patients with abdominal operation in this hospital were randomly divided into 5 groups(A -E) according to random numbers table ,different anesthesia methods were used before and after operation in patients . The cognitive function were analyzed and evaluated by MMSE scale .Results The influence of different ways of anesthesia on cog-nitive function in patients persistent to operation after third days still existed .The cognitive scores of patients in group B 3 hours af-ter operation were highest ,the occurrence rate of cognitive dysfunction postoperative were minimum .Conclusion The compound general anesthesia method by remifentanil and sevoflurane have minimal effects for cognitive function postoperative on abdominal operation patients .

0.05).Conclusions Serum DAO can be used as a sensitive marker to early diagnose gastrointestinal dysfunction in critical neonates.Serum D-lactate will be of high specific clinical significance in diagnosis,the change of D-lactate may have relations to the features of intestinal microflora in early neonates.

Objective To investigate the results of tumor specific growth factor(TSGF) levels in in healthy people and cancer patients in Guangzhou areas .Methods The serum TSGF levels of 6 615 health check-up receivers and 287 patients with cancer in the hospital from July 2012 to June 2013 were detected .Results In health check-up receivers ,the level and positive rate of TSGF were higher in >40-50 age women .The level and positive rate of TSGF in men were increased with age .The levels of TSGF in pa-tients with lung cancer ,liver cancer and digestive system tumor were higher than that in health check-up receivers(P<0 .01) ,but there has no statistically difference between genital system cancer patients and healthy check-up receivers(P>0 .05) .Conclusion Performing TSGF test in health examination is great significance to the early diagnosis of malignant tumors .The reference value range of TSGF should be set according to different gender and age .

AIM: To study the effects of resveratrol on the proliferation of human retinal vascular endothelial cells induced by cobalt chloride-simulated hypoxia in vitro.METHODS: CoCl2 (100μmol/L) was used to simulate hypoxic condition, and human retinal vascular endothelial cells were cultured in vitro as model. The cell proliferation was determined by MTT method; SABC method was employed to test the expression of vascular endothelial growth factor (VEGF); and computer image analyzer was used to process data. The effects of resveratrol on the proliferation of vascular endothelial cells were observed.RESULTS: Resveratrol inhibited the proliferation of human retinal vascular endothelial cells induced by CoCl2 in a dose- and time-dependent manner in vitro, meanwhile VEGF expression in all groups which were administered medicine was down-regulated. Both kinds of inhibitive effects of resveratrol were statistically significant (P<0.01).CONCLUSION: Resveratrol can significantly inhibit the proliferation of human retinal vascular endothelial cells and the expression of VEGF, which may provide a new approach for prevention and treatment of retinal neovascular diseases.

Objective To evaluate the association between B-cell non-Hodgkin lymphoma (NHL) and hepatitis B virus (HBV).Methods The positive rates of HBV markers in 284 patients of B-cell NHL who were admitted to our department between January 2003 and December 2009 were investigated.The positive rates of HBV markers in colorectal cancer patients were used as controls.Results The HBsAg-positive rates of patients aged 18～ 39 and stage m/Ⅳ patients were 42.6 ％ (26/61) and 37.0 ％ (50/135),which was higher than other groups.The x2 value and P value were 7.573 and 6.874,0.023 and 0.009,respectively.Compared with the control group, the B-cell NHL had significantly higher prevalence of positive HBsAg and positive HBeAg (29.6 ％ vs 14.5 ％,6.7 ％ vs 0.8 ％ ).The Wald values were 25.174 and 20.496,respectively.Both of the P value were ＜0.001 and lower prevalence of positive anti-HBs (45.4 ％ vs 58.0 ％,Wald =11.062,P =0.001).The coexpression of HBsAg, HBeAg and anti-HBc was higher in the B-NHL group than in the control group (6.0 ％ vs 0.8 ％,x2 =31.619,P ＜0.001).Similarly,the coexpression of HBsAg,anti-HBe,and anti-HBc was higher in the B-NHL group (16.2 ％ vs 11.5 ％,x2 =4.542,P =0.033).Significantly higher rate of positive anti-HBc and negative anti-HBs was observed in the B-NHL group (37.0 ％ vs 24.5 ％,Wald =17.708,P ＜ 0.001),whereas the same group showed a lower rate of negative anti-HBs compared with the control group (20.8 ％ vs 27.8 ％, Wald =5.646, P =0.017).Conclusion This finding of a positive association between HBV infection and B-NHL suggests that HBV may play an etiologic role in the induction of B-NHL.

Objective To evaluate the association between non-Hodgkin's lymphoma (NHL) and hepatitis B virus (HBV).Methods The positive rate of hepatitis B virus surface antigen (HBsAg) in 393 patients of NHL who were admitted. The colorectal cancer patients and healthy persons were also enrolled as control. Results The positive rate of HBsAg in NHL patients (26.5 ％) was significantly higher than that in colorectal cancer patients (14.5 ％) and healthy persons (8.8 ％),respectively (x2=55.713,P＜0.001).The characteristics of HBV-infected patients with NHL were similar to those who were HBV-uninfected in terms of sex,stage and B symptoms,whereas the HBV-infected patients were younger than the HBV-uninfected patients (the median age was 47ys vs 52ys,t =-1.911,P=0.021).In the HBsAg-positive NHL group,B-cell subtype was much more common than T-cell subtype (80.8 ％ vs 15.4 ％,P=0.043).Regarding colorectal cancer patients and healthy persons as control groups,the positive rate of HBsAg was significantly higher in B-cell NHL patients than that in the control groups, respectively ( 29.6 ％ vs15.5 ％ vs 8.8 ％,Wald value were 25.174 and 55.139,respectively,P＜0.001).The positive rate of HBsAg of HBV between T-cell NHL (16.7 ％) and control groups were not significantly different. Conclusions An association is present between HBV infection and NHL,especially in B-cell subtype.