Objective To compare the therapeutic effect of anatomy plate and locking compression plate in the treatment of humerus surgical neck fracture. Methods Fifty one patients with humerus surgical neck fracture were enrolled into the study and divided into two groups randomly to accept anatomy plate or locking compression plate treatment. In the anatomy plate treatment group ( n = 35 ), 19 cases were type- Ⅲ fractures and 16 cases were type-Ⅳ fractures according to Neer classification. In the locking compression plate treatment group (n = 16) ,9 cases were type-Ⅲ fractures and 7 cases were type-Ⅳ fractures according to Neer classification. Results In anatomy plate group,28 cases were followed up for 4 months to 48 months ( average period was [21 ± 2] months). According to the Constent score criteria, 19 cases got excellent outcome,8 cases got good outcome,1 case got fair outcome. In locking compression plate group, 14 cases were followed up for 1 month to 24 months (average period was[12 ± 1] months). Ten cases got excellent outcome,4 cases got good outcome. Conclusion Both anatomy plate and locking compression plate treatments are good for the humerus surgical neck fracture.

1) We have developed two forms to evaluate students' oral presentation skills (important but hard to teach in the medical school curriculum): one is a peer review form for an audience to evaluate a presenter's performance, and the other is a form for a presenter to evaluate his or her own performance.2) The evaluation process is simple: evaluators fill out the forms by checking the items for evaluation. With these evaluation forms students can get tips for improving their presentations because technical suggestions are written near each item.3) The forms were beneficial for both students and instructors, because students could get tips for improving their presentations, and instructors could concentrate their efforts on scientific content after the students' presentations.

Objective To investigate the characteristics of secondary infections in hepatitis B patients with acute-on-chronic liver failure(ACLF)and its impact on the prognosis. Methods Infection sites, clinical and etiological characteristics were retrospectively reviewed in 186 hospitalized patients with ACLF from the Third Affiliated Hospital of Sun Yat-sen University during January to December 2007. Logistic regression was used to analyze risk factors of secondary infections. Results In 186 patients with ACLF, 160 patients(86.0%) were complicated with infections, and the common sites of infections were abdominal cavity, biliary tract, lung and intestinal tract. The rates of secondary infections were higher in patients with serum albumin(Alb)≤30 g/L, total bilirubin(TBil)>342 μmol/L, prothrombin time(PT)>28 seconds, and those complicated with one or more complications(χ~2=5.4, 7.3, 21.3 and 14.7, P<0.05). The fatality rates of patients with and without infections were 74. 5%(119/160) and 42.3%(11/26), respectively, and the difference was of statistical significance(χ~2=10.9,P=0.000). Patients with multi-organ infections had a higher fatality rate(79.8%, 79/99)than those with one organ infections(65.6%, 40/61), and the difference was also significant(χ~2=4.0, P=0.045). Conclusion Patients with ACLF are liable to infection, and the severity is closely related with the prognosis.

To investigate the changes of plasma adrenomedullin(ADM) and adrenotensin(ADT) levels and their clinical significance in the pathological process of congestive heart failure(CHF), plasma levels of ADM and ADT in 45 patients with CHF before and after treatment were measured by specific radioimmunoassay. The results indicated that before treatment, plasma levels of ADM in class Ⅱ and Ⅲ CHF patients were 51.46?4.52pg/ml, 70.39?3.22pg/ml and plasma levels of ADT in class Ⅱ and Ⅲ CHF patients were 29.98?1.13pg/ml, 33.45?0.91pg/ml, respectively,which were higher than those of the control subjects(24.12?1.59pg/ml and 24.89?2.19pg/ml, respectively)(P

Objectives To study the changes of plasma levels of proadrenomedullin N terminal peptide(PAMP) in patients with congestive heart faillure(CHF) before and after drug treatment and its significance.Methods Plasma PAMP levels in 45 patients with CHF and 7 heathy control subjects were measured by specific radioimmunoassy.Results The plasma PAMP levels in patients with CHF were significantly decreased with the deterioration of cardiac function.Plasma PAMP levels in 45 patients in NYHA class Ⅳ(2 79?0 89pg/mL) were significantly lower than those in class Ⅱ(6 24?1 71pg/mL)?class Ⅲ(7 38?1 28pg/mL) and control subjects(8 56?2 44pg/mL)(P

Objective To investigate the effect of pronuciferine on apoptosis of cultured human umbilical vein endothelium cells(HUVECs) induced by angiotensin Ⅱ(AngⅡ).Methods HUVECs cell line ECV304 was cultured in vitro,pretreated with Captopril(10 ?mol/L) or pronuciferine 10,1,0.1,0.01 ?mol/L for 30 min,respectively,then treated with AngⅡ(1 ?mol/L).Cell-morphosis was observed by light microscope.Cells viability was assessed by MTT assay.Production of nitric oxide(NO),activities of total nitric oxide synthase(tNOS),and inducible nitric oxide synthase(iNOS) were measured by colorimetry.Apoptosis rate was measured by Flow Cytometer(FCM).Results AngⅡ induced typical endothelial cell apoptosis and the apoptosis rates were significantly higher than those of the control group((P

Three new genes of Cryptosporidium parvum were cloned, including a gene encoding methionine aminopeptidase, one encoding chaperonin containing T-complex protein 1 delta (TCP-1 delta) and one with unknown function. DNA sequence analysis indicated that these genes are quite conserved, but there were some base pair differences between genotype I and genotype II isolates. These differences were confirmed by PCR-restriction fragment length polymorphism (PCR-RFLP) analysis of the 3 genes from 41 isolates collected from different hosts and geographical origins. In brief, the band patterns generated by endonuclease Hind III or Hinf I restrictions of the gene of methionine aminopeptidase, Sac I restriction of the gene of chaperonin, or Ava II restriction of the unknown gene could differentiate the isolates of C. parvum into genotype I and genotype II. PCR primers based on these genes amplified only C. parvum genes. Even a single oocyst was detectable with these PCR primers. Thus the results provided further evidence that genotype I and genotype II are distinct, and our three new primers can be used to detect and characterize C. parvum isolates with high sensitivity.

Objective To study the association of the polymorphism of A9570G in ACE2 gene with the genetic predisposition of diabetic nephropathy (DN). Methods 312 patients with type2 diabetes(T2DM) were included in the study. All the patients were divided into DM group and DN group according to if onset of DN. PCRRFLP were used to observe the association of polymorphisms of A9570G in ACE2 gene with DN. Results G allele frequencies of male subjects were 57.9% in DM patients and 67.5% in DN patients (X2 = 1. 559 ,P =0.212) ,52. 4% and,52.1% in female DM and DN patients (X2 =0. 003 ,P =0.955). In female patients,genetype in DN patiants had no difference from that in DM patients (X2 = 0. 109, P = 0. 947). Conclusion The polymorphism of A9570G in ACE2 gane may not associated with the genetic predisposition of DN.

This article analyzes the current characteristic of cardiology teaching.In light of advantages of network education,it discusses the prospect of network-based education and some problems.

Objective To clone and express the valuable Clonorchis sinensis antigen molecules which can be applied to the diagnosis of clonorchiasis. Methods Based on the sequences (Genbank) No. AF271091 (CysA) and No.AF093242 (CysB), primers were designed to amplify the two C. sinensis cysteine proteinase genes and expressed in E.cloi. The expressed proteins were purified by affinity chromatography and then tested for their immunological characters.Results The two genes were successfully cloned and expressed. Western blot showed that CysB had strong reaction with clonorchiasis sera and very weak reaction with schistosomiasis sera, while CysA showed no reactivity with the probed sera. Immunohistochemistry showed that both proteins were mainly located in adult worm intestines and the intrauterine eggs.Conclusions The results suggested that, of the two expressed C. sinensis proteins, CysB had good antigenic reactivity against sera from patients. It is a potential candidate of diagnostic antigens for clonorchiasis.