By analyzing 94 questionnaires of majors in medical imaging technology on medical ethics teaching,we found that some teaching models will help students realize the necessity of studying medical ethics and case teaching,including increasing the expansion of case teaching,selecting certain videos and short films into case teaching,expanding case-study model and case-exploration model,strengthening teachers' after-case-teaching summary to advance and further ethical themes.These models will also improve students' ability in ethical analysis and their sense of ethics,and will surely apply the theoretical principles into practice once they are interested in studying medical ethics.

Objective To evaluate the applicability of the international criteria for blood smear review on the SysmexXE-2100 hematology analyzer.Methods 300 blood samples were tested by hematology analyzer Sysmex-XE2100,then it were divided into two groups,that is,sieving group and sieved group according to the criteria of international boold smear review,then blood smears were reviewed with optical microscope.Results Among 300 samples,,54 cases were true positive(18%),true negative was 64%,48 cases were false positive(16%),four 6cases were false-negative (2%),the accuracy rate was 82%.Conclusion Performance of microscopic observation after analyzer detection according to the international criteria for blood smear review presented good efficiency,it will show better practical value analysising with the clinical condition.

Objective:To evaluate the effect of Oravive on remineralization and anti-demineralization ability with a laser fluorescence system.Methods:60 premolar specimens with artificial caries lesion were divided into three groups randomly.Samples were treated with Oravive,fluoride dentifrice and distilled water for 1 h,then etched for 24 h.A laser fluorescence system was used to make a quantitative record.Results:Oravive showed a statistically significant effect on remineralization and anti-demineralization ability.There was significant difference between Oravive and fluoride dentifrice on remineralization,but no difference on anti-demineralization.Conclusion:Oravive has good remineralization and anti-demineralization effects.Oravive is better than fluoride dentifrice on remineralization but equivalent to it on anti-demineralization.

Objective To evaluate the effects of endothelial nitric oxide synthase (eNOS) gene transfer on intrahepatic vascular resistance (IHVR) and portal venous pressure (PVP) in cirrhotic rats. Methods (1) 5 days after eNOS gene transfer, the in situ liver perfusion system (ISLP) was prepared and in different groups of controls and eNOS treated rats, the followings were analyzed: portal perfusion pressure (PP) dose-response curve to norepinephrine (NE); the effects on PP caused by specific nitric oxide synthase (NOS) inhibitor N-monomethyl-L- arginine (L-NMMA) or the nitric oxide (NO) synthesis substrate L-arginine (L-Arg). (2) The experiment of perfusion via portal vein in vivo was performed and the effects of L-NMMA on the PVP was observed. Results (1) In ISLP model, after L-NMMA was added into the perfusate of the control rats, PP dose-respose to NE increased remarkably and the peak of PP increased to (26.7?0.9) mm?Hg. The increased PP response to NE caused by L-NMMA was offsetted by L-Arg and the peak of PP decreased to (23.2?0.9) mm?Hg. In eNOS treated rats, PP response to NE was significantly lower than that in controls (P

Objective To investigate the anti-fibrosis effect of a 5-lipoxygenase (5-LO)specific inhibitor AA-861 on liver fibrosis. Methods Liver fibrosis was induced in male Sprague Dawley rats by intraperitoneal injection of carbon tetrachloride(CCI4).AA-861(0.2 mg/100 g/d)was administrated by intraperitoneal injection starting 2 days before the first dosage of CCI4 and rats were killed at weeks 2,4,and 6.Liver specimens were obtained from each animal and fixed with 4%formaldehyde for histological analysis. The Mrna expression of 5-LO,smooth muscle-alpha(α-SMA),Collagen-1,matrix metalloproteinase-2(MMP-2)and tissue inhibitors of metalloproteinase-1(TIMP-1),the protein expression of 5-LO were evaluated by real time PCR and Western blot respectively. Histological analysis was performed by microscopy observation. Fibrosis conditions in rat liver in each group were evaluated according to the semi-quantitative scoring system (SSS), Hyp in rat livers and the hepatic functional biochemistry were also detected. Results Along with the aggravation of liver fibrosis, the gene expression of 5-Lo,α-SMA,Collagen-1,MMP-2 and TIMP-1 increased gradually, and the level of ALT, TBA, Hyp and SSS score also increased gradually. With the administration of AA-861,the Mrna expression of 5-LO,α-SMA,Collagen-1,MMP-2,TIMP-1 and the protein expression of 5-LO decreased remarkably, and the reduction in TIMP-1 Mrna expression was more significant than that in MMP-2.Six weeks after AA-861 treatment, the level of ALT, TBA, Hyp and SSS score were also decreased significantly. Conclusion AA-861 ameliorates CCI4 induced rat liver fibrosis by inhibiting the 5-LO pathway and decreasing the expression of 5-LO,α-SMA,Collagen-1,MMP-2 and TIMP-1.

Objective To observe the effects of cystamine, a tissue transglutaminase (tTG) inhibitor, on the development of rat liver fibrosis induced by carbon tetrachloride. Methods One hundred male SD rats were randomly divided into control group (n=20), hepatic fibrosis group (n=40) and cystamine group (n=40) . Liver fibrosis model was induced by intraperitoneal injection of carbon tetrachloride. Cystamine (112 mg·kg-1·d-1) was administered by intraperitoneal injection 2 days before injection of carbon tetrachloride. The rats were sacrificed at weeks 4 and 8, and the liver tissues and serum specimens were obtained. The mRNA expression of tTG, smooth muscle-alpha (α-SMA), collagen-Ⅰ and tissue inhibitors of metalloproteinase-1 (TIMP-1) were detected by real time PCR. The protein expression of tTG and α-SMA, liver function and content of hydroxyproline in liver tissues were determined by Western blot. Histological changes of the liver was observed under microscope. The fibrosis conditions of rat liver in each group were evaluated according to the semi-quantita-tive scoring system. All the data were analyzed by one-way ANOVA. Results Eight weeks after the injection of carbon tetrachloride, obvious injury of the liver in liver fibrosis group was observed. The levels of alanine trans-aminase (ALT), total bile acid, total bilirubin, hydroxyproline, tTG, α-SMA, collagen-Ⅰ and TIMP-1 were (1313±157)U/L, (99.9±18.5)μmol/L, (10.9±1.6)μmoL/L, (55±12)μg/g, 145.6±51.2, 130.3±44.6, 211.3±75.1 and 162.4±53.5. After administration of cystamine, the levels of ALT, total bile acid, total bilirubin, hydroxyproline, tTG, α-SMA, collagen-Ⅰ and TIMP-1 were (378±87) U/L, (61.0±12.7) μmol/L, (9.8±1.7) μmol/L, (70±14 ) μg/g, 48.6±12.3, 40.7±12.3, 63.9±16.0, 59.2μ23.4. Conclusion Cystamine can alleviate the carbon tetrachloride-induced rat liver fibrosis by inhibiting the tTG pathway.

Objective To explore the influencing factor of duration of untreated psychosis(DUP) and the relationship between duration of untreated psychosis and treatment outcome in epidemiological first-episode schizophrenia. Methods 912 medical records of the first episode schizophrenia patients were recruited in the study for epidemiological survey . The general medical data, clinical diagnosis, and treatment outcome were collected. DUP was determined refer to symptom onset for schizophrenia (SOS) scale. Patients were divided into short DUP and long DUP groups according to the median values of DUP values. Results Between short DUP and long DUP groups, the difference in marriage was significant ( P < 0. 05). The unmarried patients in the short DUP group (63.7% ) was higher than the long DUP group (52.6% ), the variance was significant (λ2 =5.990, P<0.05). The divorce in the short DUP group (0.6% ) was lower than the long DUP group (4.4% ) , the variance was significant (λ2 =5.079, P<0.01).The simple schizophrenia in the short DUP group (1.5%) was lower than the long DUP group (4. 1% ) , the variance was significant (λ2 =5.868, P<0.05). The treatment outcomes between the two groups had a significant variance ( λ2 =36.093, P < 0.01) , and the Ridit analysis of treatment outcomes between the two groups showed significant difference ( u = 5.183, P<0.01). The marriage,age of onset and clinical diagnosis were significantly correlated with DUP in multiple factor Logistic regression analysis. Conclusion The marriage,age of onset and clinical diagnosis are significantly correlated with DUP in the first episode schizophrenia patients,the longer of DUP and the worse of treatment outcome.

Objective To analyze the results of detection of infectious indicators of patients from the first affiliated hospital of Nanjing Medical University in recent 5 years ,and to provide a scientific basis for the control and prevention of infectious diseases . Methods The patients with clinical data from January 2010 to April 2014 were retrospectively analyzed ,then the infectious indica‐tors of all the subjects were detected and analyzed .Results HIV positive rate was between 0 .043% to 0 .061% ,positive rate of HCV was between 1 .07 to 1 .41% ,positive rate of TP was between 2 .01% to 2 .17% .HBsAg positive rate in 2010 was 8 .36% ,the positive rate was 7 .81% in 2014 .HBsAb positive rate in 2010 was 35 .36% ,positive rate was 50 .96% in 2014 .Conclusion Effec‐tively cut off the route of transmission could prevent the further spread of infectious disease .

Objective To investigate the effect of selectively upward placement of acetabular implants on limb length and post?operative function of developmental dysplasia of the hip patients with shortened legs during total hip arthroplasty (THA). Methods Twenty?six cases of developmental dysplasia of the hip received THA between January 2008 and December 2013, in?cluding 12 cases of Crowe typeⅠ, 8 of Crowe typeⅡ, 6 of Crowe typeⅢ. There were 5 males and 21 females with an average age of 62.7 years (range, 36-80 years). The left hip was involved in 9 cases and the right hip in 17 cases. The preoperative mean Har?ris score was 42.30±12.84, and the preoperative mean WOMAC score was 59.08±13.84 at the last follow?up. The anteroposterior X?ray films and CT scan of the pelvis, anteroposterior and lateral X?ray films of the femur, and TraumaCad analysis were conducted routinely preoperation. More than 70%of the bone?implant interface was covered by appropriate upward distance of acetabular im?plant. Results The follow?up time ranged from 6 to 73 months (mean, 36 months). The Harris score improved to 91.18±7.09, and WOMAC score reduced to 9.85±3.75. According to postoperative measurement, affected limb had been lengthened by 0-5 mm in 8 cases, 6-10 mm in 5 cases, 11-15 mm in 5 cases,>15 mm in 7 cases, and shortening increased 1 mm in 1 case, but the average lengthening was 9.23±7.54 mm. The upward distance of acetabular implant was 0-5 mm in 10 cases, 6-10 mm in 7 cases and>10 mm in 9 cases. The average lengthening was 6.60±6.72 mm in patients having 0-5 mm upward distance, 11.90±5.64 mm in patients having 6-10 mm upward distance and 10.11 ± 9.35 mm in patients having>15 mm upward distance, showing no significant differ?ence. The leg length discrepancy was-3.70±6.43 mm in patients having 0-5 mm upward distance, 1.71±6.24 mm in patients having 6-10 mm upward distance and 0.56 ± 7.70 mm in patients having>15 mm upward distance, showing no significant difference. Con?clusion The limb length could be improved by selectively upward placement of acetabular implants in developmental dysplasia of the hip patients with anatomically abnormal acetabulum during THA, with reasonable preoperative design and corrective operation.

BACKGROUND:The molecular mechanism of periprosthesis osteolysis is not yet completely clear. Periprosthetic osteolysis and absorption is the pathological and physiological process typical of artificial joint loosening. Interleukin-1 can affect bone resorption process through a mitogen-activated protein kinases (MAPK) signaling pathway.
OBJECTIVE:To explore the effects of siRNA-induced interleukin-1 receptor-associated kinase-4 gene (IRAK-4) silence on MAPK expression in MG63 cells, which may provide experimental basis for treatment and prevention of periprosthesis osteolysis.
METHODS:The siRNA sequences of the target gene, IRAK-4, were constructed and transferred into MG63 cells using Lipofectamine 2000. There were three groups:blank group=MG63 cells, control group=MG63 cells transfected with scrambled IRAK-4siRNA, and silence group=MG63 cells transfected with specific IRAK-4 siRNA. The protein level of extracellular regulated kinase (ERK), c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinases (p38MAPK) were detected by western blot assay.
RESULTS AND CONCLUSION:The expression of IRAK-4 mRNA and protein in the silence group was significantly decreased compared with the control group. Compared with the blank and control groups, 48 hours after the transfection, IRAK-4 gene silencing in MG63 cells decreased protein expression of p-JNK1/2P46, p-ERK1/2 and p-p38MAPK (P<0.05). IRAK-4 silencing inhibited ERK, JNK and p38MAPK expression in osteoblast-like cells.