Objective: To explore the reinforcement of polyglycidyl methacrylate ( PGMA ) pre-impregnated quartz fiber mesh in denture base materials by investigation of interface compatibility and fracture resistance .Methods: 1-layer, 2-layer, 3-layer PGMA pre-impregnated quartz fiber meshes , electrolyzed cobalt-chromium alloy mesh and cobalt-chromium alloy mesh conditioned by metal primer were integrated in polymethyl methacrylate ( PMMA) resin by sandwich embedding method .Block sam-ples of 5 groups were prepared (40 mm ×15 mm ×2 mm).Fracture resistance was determined in a 3-point bending test at 2 mm/min.Scanning electron microscope (SEM), micrographs were taken from the fractured surfaces to analyze the bonding interface compatibility .Results: The group of 3-layer PGMA pre-impregnated quartz fiber mesh presented the highest elastic modulus of 6 406 MPa and flexural strength of 227 MPa among the five groups , while the 1-layer and 2-layer expressed the similar elastic modulus and flexural strength to the pure PMMA group .The metal groups demonstrated better mechanical properties, while the metal surface conditioner played much better .The metal surface conditioner pre-impregnated cobalt-chromium alloy and PGMA pre-impregnated quartz fiber mesh showed compatible in-terface with PMMA.Conclusion:The mechanical properties were improved by the increasing of the fiber by adding the more meshed .Although the benign interface did help the compatibility , the quantity of the fibers played an important role in the strength .

ObjectiveTo investigate the effect of puerarin on the expression of pigment epithelium-derived factor (PEDF) in the retina of diabetic rats.MethodsThe diabetic retinopathy rat model was established.Rats were randomly divided into three groups (normal,diabetic,and diabetic with puerarin injection).The pathological changes of the retinopathy were examined.PEDF was analyzed with PCR in different time point.Results Body weight of diabetic group [ ( 216.9 ± 8.37 ) g,and(179.1 ±7.56)g] was compared with normal group[ (298.2 -±6.78)g,and(323.5 -±6.45)g] in the 3 month and 5 month ( q =12.39,P ＜0.01 ; q =15.47,P ＜0.01 ).Blood glucose of diabetic group and diabetic with puerarin injection group was compared with normal group at each time point ( P ＜ 0.01,P ＜ 0.05 ).HE staining of the retina of diabetic rats indicated a diabetic retinopathy occurred in the early - stage in diabetic group,but changed slightly in the diabetic model with an injection of puerarin.The PEDF expression at the 5 month time point in normal group,diabetic group,and diabetic group with puerarin injection was 8.833 (1.200),1.650(3.300),and 8.350( 1.100),respectively.Compared with normal group and diabetic group with puerarin injection,the level of PEDF was significantly decreased in diabetic group (x2 =48.57,P ＜ 0.01 ;x2=48.46,P ＜ 0.01 ).ConclusionsPuerarin can alleviate the retinal pathological damage of diabetic rats,early intervention with puerarin can prevent from the expression of PEDF and delay the diabetic retinopathy process.

Objective To evaluate the clinical efficacy of platinum-based chemotherapy combined radiotherapy for cervical cancer.Methods From October 2008 to June 2010,61 patients with cervical cancer were treated by radiotherapy( conventional external radiation and after-loading brachytherapy,to a total dose of 8000- 8500 cGy)combined platinum-based chemotherapy (cisplatin or nedaplatin 20 mg/m2,one times per weeks) in our department.The clinical efficacy and side effects were evaluated.Results Among 61 patients,the short-term effective rate was 100％ ( 61/61 ) and 1-year survival rate was 85.2％ ( 52/61 ).There was no significant difference between cisplatin group and nedaplatin in 1-year survival rate ( 84.6％ vs.85.7％,x2 =0.014,P=0.095).Arrest of bone marrow at Ⅰ,Ⅱ,Ⅲ and Ⅳlevel occurred 5,24,5 and 1 patients in the cisplatin group,and 6,12,3 and 3 patients in the nedaplatin group.There was also no significant difference between these two groups in great mass side effects induced by chemoradiotherapy (x2 =6.402,P =0.171 ).Conclusion It is worth practising of platinum-based chemotherapy combined radiotherapy for cervical carcinoma.The side effects induced by chemoradiotherapy is low.

Six compounds, syringaresinol (Ⅰ), 2,5－dimothoxy－1,4－benzoquinone(Ⅱ), ?－sitost erol (Ⅲ)verticine (Ⅳ), verticiaone (Ⅴ) and solnidine(Ⅵ) were isolated from the aerial parts of Fritillaria thunbergii Miq. Their structures were determined by spectral data and chemical,evidences Ⅰ and Ⅱ were obtained from the Fritillaria L. for the first time.

The following problems in medical journals of China were analyzed, including limited free full-text access, low international influence power, severe duplicated construction, academic misconducts, weakened peer review, and overemphasis on journal assessment indexes, with suggestions put forwards for their solution, such as exploring novel channels for digital publication and distribution , actively preparing journals publishedin English , and improving the academic level of journals.

Objective To describe the status of publication papers on nursing of 47 grade three and first-class hospitals in Henan province from the year of 1991 to 2014 and provide valuable reference basis for the relevant departments to make policy. Methods The methods of literature metrology was used to analyze the amount, journals, key words distribution and other information of the 12 422 articles with the keyword 'nursing', which were included by China National Knowledge Infrastructure (CNKI) and Wanfang data, VIP database. Results The number of published articles of the investigated units was in the upward trend on the whole. But the number of annual published articles on the core periodicals was significantly lower than the total. The articles were mainly distributed on 3 nursing core journals, 5 non-nursing journals of Henan province, which were mostly for regional academic exchanges. 11 key words of nursing articles of Henan were the same as the nation but different for the sequence. Conclusions The grade three and first-class hospitals in Henan are in urgent need of the construction of systematic and standardized scientific research training system. The channel for the exchange of nursing academic needs to be widen. Clinical nursing research should be paid more attention to the characteristic field.

Objective To investigate the effect and mechanism of exogenous leptin on liver injury in severe acute pancreatitis rat .Methods Thirty male SD rats were randomly divided into the sham operation group ,SAP group and leptin intervention group . The SAP rat models was established by retrograde injection of 3 .5% sodium taurocholate into the biliopancreatic duct .The leptin intervention group was intraperitoneally injected with leptin 20 μg/kg .The rats in each group were sacrificed at 12 h after model‐ing .The pancreas and liver tissues were taken for HE staining and detecting the nuclear factor kappa B (NF‐κB) .The cell apoptosis in situ labeling method was adopted for detecting the liver tissue cell apoptosis index .ALT ,AST and AMY were detected . Results Compared with the sham operation group ,the liver tissue pathology score in SAP group and leptin intervention group were significantly increased(P<0 .05) .The liver tissue pathology scores in the leptin intervention group were lower than those in the SAP group(P<0 .05) .The NF‐κB expression of liver tissue in the SAP group and leptin intervention group was obviously increased compared with the sham operation group ,the expression in the leptin intervention group was decreased compared with the SAP group (P<0 .05) .The liver cell apoptosis index in the leptin intervention group and SAP group was significantly higher than that in the sham operation group (P<0 .05) ,and which leptin intervention group was decreased compared with the SAP group (P<0 .05) . The results of ALT ,AST and AMY in the SAP group and leptin intervention group were increased significantly compared with the sham operation group(P<0 .05) ,while which in the leptin intervention group was decreased compared with the SAP group (P<0 .05) .Conclusion The exogenous leptin may play the protective effect on SAP complicating liver damage by lowering the liver tis‐sue NF‐κB expression and reducing the liver cell apoptosis index .

Objective To assess whether FICE or IC is more effective at detecting colonic diseases.Method We searched PubMed, CINAHL, CQVIP and the Cochrane Library databases for relevant papers published between January 2008 and August 2013 using the following keywords: lfexible spectral imaging color enhancement, indigo carmine, colonoscope, colonic lesions, colon tumor and chromoendoscopy. We included eight articles, and all data were subdivided for analysis.Results We used odds ratios (OR^s) with 95 % conifdence intervals (CIs) to assess correlations between the detection methods and detection rates. The detection rates did not signiifcantly differ between FICE and IC for colonic tumor lesions (OR^ = 0.90, 95 % CI: 0.76~1.08,P = 0.255), non-tumor lesions (OR^ = 1.09, 95 % CI: 0.92~1.30,P = 0.302), adenomas (OR^ = 0.87, 95 % CI: 0.72~1.07,P = 0.188), non-neoplastic polyps (OR^ = 0.84, 95 % CI: 0.67~1.06,P = 0.146), lfat lesions (OR^ = 0.87, 95 % CI: 0.71~1.08,P = 0.203), protruded lesions (OR^= 1.23, 95 % CI: 0.93 ~ 1.64,P = 0.153), right colon lesions (OR^ = 0.83, 95 % CI: 0.60 ~ 1.14,P =0.251), transverse colon lesions (OR^ = 0.71, 95 % CI: 0.48~1.05,P = 0.086), or left colon lesions (OR^ = 1.35, 95 % CI: 1.01 ~ 1.80,P = 0.045).Conclusions There were no signiifcant differences in the rate of colonic lesion detection between FICE and IC except the left colon. Therefore, providers should choose a suitable inspection method based on the resources of the hospital.

Objective To observe the clinical features, phenotypes and genotypes in a Chinese family with choroideremia (CHM). Methods A Chinese four-generation family (15 members) with CHM, including 5 patients (4 males/1 female), 2 female carriers and 8 healthy members, was enrolled in this study. Initially all family members underwent best corrected visual acuity (BCVA), indirect ophthalmoscopy, fundus fluorescein angiography, optical coherence tomography (OCT), visual field and full view electroretinogram (ERG). BCVA was followed up for 3 years. Venous blood samples were collected, and all of the 15 coding exons and flanking intron regions were amplified in the proband by polymerase chain reaction followed by direct sequencing. Protein structure was modeled based on the protein data bank and mutations in DeepView v4.0.1 to predict the effect of the mutations. A total of 180 healthy volunteers were enrolled as control group to matching CHM gene sequences. Results The visual acuity (VA) of 3/4 adult male patients began to decrease at less than 10, 10 and 30 years old, the average BCVA was 0.43. There were characteristic signs and symptoms of CHM including narrow visual field, extinguished rod and cone response in ERG, disappeared junction line and intermediate line of photoreceptor inner segment/outer segment on OCT. After 3 years, the mean BCVA decreased to 0.11. The BCVA of one young male patient was 1.0 in both eyes with minor changes fundus and visual field. The VA of the female patient began to decrease at 50 years old, her BCVA of two eyes were 0.5 and 0.25, respectively. The fundus changes were typical of CHM, with relative scotomas in the peripheral visual field of OD, and big scotomas in the OS. After 3 years, her mean BCVA decreased to 0.2. Of 2 female carriers, one had minor fundus changes (patches of pigmentary deposits, atrophy spots of retinal pigment epithelium cells), and the other was normal. A novel heterozygous c.1837G>A mutation in exon 15 of CHM was detected in the proband, which resulted in the substitution of serine by proline at codon 613 (p.D613N). Based on molecular modeling, the misfolded protein caused by the mutation might destabilize the structure of the helix that potentially could affect the global stability of the Rep-1 protein. Conclusions A novel c.1837G>A (p.D613N) mutation may be the causative mutation for CHM in this family. Female CHM carriers may have some signs and symptoms.

Objectives To assess the performance of first trimester ultrasound screening for fetal structural and chromosomal anomalies based on a detailed anomaly and nuchal translucency (NT) scan at 11-13+6 weeks' gestation.Methods A prospective cohort study was conducted at Nanjing Drum Tower Hospital.Fetuses with a crown-rump length (CRL) between 45 mm and 84 mm scanned during December 2015 to March 2016 were enrolled in this study.After a detailed first-trimester anomaly scan followed the protocol of systematic standardized scan plans,fetuses with congenital abnormalities were screened out.Second trimester ultrasound screening and postnatal examination were performed for further examination of fetal anomalies.Cytogenetic analysis was performed on the fetuses with informed consent.Results (1) A total of 1 154 fetuses were enrolled in this study and among them,36 (3.1％) cases of fetal abnormalities were diagnosed through prenatal examination (35 cases) and postnatal examination (one case).(2) Twenty-one (58.3％) out of the 36 cases with structural and chromosomal anomalies were screened out by using the first-trimester scan,including eight cases of congenital cardiac defect (two cases of atrioventricular septal defect,one case of tricuspid atresia,one case of tetralogy of tetralogy,one case of right ventricle aneurysms and one cases of hypoplastic left heart syndrome combined with cystic hygroma with one case combined with polydactyly),four cases of central nervous system anomaly (three cases of exencephaly and one case of anencephaly combined with double outlet right ventricle),two cases of cleft palate/lip with one case combined with double outlet right ventricle,two cases of exomphalos,one case of amniotic band syndrome,one case of spinal bifida combined with megacystis,one case of umbilical cyst,one case of polydactyly and one case of cystic hygroma.One case of twin pregnancy chose selective fetocide to the fetus with exencephaly and 16 cases terminated pregnancy.The other four cases were confirmed by second trimester ultrasound screening and postnatal examination.Fourteen (38.9％,14/36) new cases of structural and chromosomal anomalies were detected by the second-trimester scan,six of which terminated the pregnancies and the rest were confirmed at term.One (2.8％,1/36) case of polydactyly was detected postnatally.(3) Chromosomal microarray analysis was performed on 28 cases,seven of which were identified as having chromosomal abnormalities including five cases detected in the first trimester and two cases detected in the second trimester.(4) Out of the 20 fetuses with abnormal NT in early trimester,which accounted for 1.7％ of all enrolled fetuses,nine were indentified with major structural or chromosomal abnormalies,a quarter of all abnormal fetus.Conclusions Detailed anomaly scan and NT scan in the first-trimester can increase the detection rate of fetal structural and chromosomal anomalies as compared with the traditional NT scan and provide earlier detection of severe fetal abnormalities as compared with second trimester anomaly scan.