Objective To investigate the role of ephrin A genes in the development of oxygen-induced retinal neovascularization (OIR) in mice. Methods The OIR model was established by oxygen induction in new born C57BL/6J mice. Reversed transcript - polymerase chain reaction (RT-PCR) was used to measure the expression levels of ephrin A1-A5 in retinas of mice in experimental and normal control group. Results All of the ephrin A family genes expressed in normal retinas. Ephrin A1 mRNA was significantly higher in OIR group (t= 3.19, P = 0. 019); ephrin A2 mRN A was higher in the 15-day-old OIR retinas (t= 3. 71,P=0. 033) ; ephrin A3-A5 mRNA decreased or disappeared in 12- and 13-day-old RNV mice, and increased in 15-day-old OIR mice. Conclusion Ephrin A genes are involved in the development of retina and OIR.

The paper analyzed the experiences of clinical subjects development at hospitals of Capital Medical University.On this basis,the authors raised such development suggestions as further improvement of the management systems,progressive affiliation mechanism,information platform,and better performance appraisal mechanism,for the purposes of empowering the standard and strength of clinical subjects of the hospitals.

Objective To understand the effect of curcumin and TSA on c-myc gene expression in human gastric cancer and to explore the dynamic balance of the histone acetylation / deacetylation in gene expression in gastric cancer and the significance of the regulation. Methods Gastric cancer cell line SGC-7901 and MGC803 were cultured,and then different concentrations of histone acetylase inhibitors curcumin and histone deacetylase inhibitor TSA were added,respectively.mRNA of c-myc expression wasdetected by RT-PCR. Results With increasing of the concentration of curcumin and redcuing of the TSA concentrations c-myc expression was inhibited (P

Background and purpose:The impact of the two factors of von Willnbrang factor(vWF) and integrin?3 on tumor metastasis has not been recognized. This study was done to investigate the expression of vWF and integrin?3 in human lung cancer cell line H460,the association between the two factors and tumor metastasis effect of vWF and integrin?3 on adhesion of human lung cancer cell line H460. Methods:The expression of vWF and integrin ?3 protein was examined by immunohistochemical staining. The impact of vWF and integrin?3 on adherent effect of tumor cells was evaluated by adhesion experiment, antibody inhibiting experiment and MTT.Results:Positive expression of vWF and integrin?3 was detected in H460 human lung cancer cells. H460 human lung cancer cells were able to adhere to vWF. Using anti-integrin?3, we observed that the ability of cell adhesion to vWF was inhibited,and A Value decreased from 1.59?0.06 to 0.55?0.03(P=0.01619). Using anti-vWF, we observed cell adhesion to vWF was inhibited too and A Value decreased from 1.60?0.06 to 0.54?0.03(P=0.01598),which had the same effect when using anti-integrin?3.Conclusions:H460 human lung cancer cells are capable of producing vWF, and vWF expression contributes to metastasis by adhering to cancer cells, integrin?3 is the vWF receptor on H460 human lung cancer cells.

Objective To analyze the MR imaging features of pyocephalus. Methods MR imaging features!of pyocephalus in 5 cases with clinically proved were analyzed retrospectively. All patients were undergone no-contrast MR imaging. 3 patients received diffusion weighted-imaging(DWI). Results In all five patients,the debris and pus with pus-fluid level were shown inside the lateral ventricle.The debris or pus was slightly hyperintense on T1WI, slightly hypointense on T2WI relative to cerebrospinal fulid(CSF). On DWI, the debris was hyperintense in 1 case and isointense in 2 cases.Conclusion The features of MR imaging of pyocephalus is specific. MR imaging is valuable in the diagnosis of pyocephalus.

Objective To investigate the chemical constituents in the whole plant of Hedyotis corymbosa.Methods The compounds were isolated by column chromatography,pre-TLC,and recrystallization.Their structures were elucidated by spectroscopic methods.Results Thirteen compounds were isolated and identified as(+)-lyoniresinol-3?-O-?-D-glucopyranoside(Ⅰ),quercetin(Ⅱ),esculetin(Ⅲ),scopoletin(Ⅳ),hedyotiscone A(Ⅴ),p-hydroxybenzoic acid(Ⅵ),protocatechuic acid(Ⅶ),vanillic acid(Ⅷ),syringic acid(Ⅸ),(+)-vomifoliol(Ⅹ),(-)-dihydrovomifoliol(Ⅺ),S-(+)-dehydrovomifoliol(ⅩⅡ),and alizarin 1-methyl ether(ⅩⅢ),respectively.Conclusion Compounds Ⅰ—ⅩⅢ are isolated from this plant for the first time.

Objective To observe the clinical efficacy and safety of calcipotriol betamethasone ointment for the treatment of pso‐riasis vulgaris in the stable stage of patient .Methods This was a randomized ,parallel controlled clinical trials ,in which 90 patients with psoriasis vulgaris were randomly divided into experimental group and controlled group .All of them received 4 weeks of thera‐py .We compared the efficacy and safety 1 ,2 ,4 week after treatment by calcipotriol betamethasone ointment .Results About the clinical efficacy ,according to the decrease in percentage of psoriasis area and severity index (PASI) were:23 patients in the experi‐mental group were effective(efficacy rate is 76 .67% ) ,14 patients in control group Ⅰ was effective(efficacy rate is 46 .67% ) ,15 pa‐tients in control group Ⅱ was effective(efficacy rate is 50% ) .The differention between experimental group and the two control groups was significant(P< 0 .05 ,P< 0 .01) .After 1 ,2 ,4 weeks of therapy ,the decrease in percentage of PASI of experimental group is higher than that in the control groups .The scores of the observed erythema ,infiltration ,scale were decreased ,and the total scores of PASI are also decreased 4 weeks after therapy .The decrease score of experimental group is higher than that of control group Ⅰ(P<0 .01) and control group Ⅱ(P<0 .01) .The side effects of the experimental group are mild such as itching ,folliculi‐tis ,erythema ,and the laboratory examinations had no abnormal changes .Conclusion Calcipotriol betamethasone ointment was more effective to treat the stable stage psoriasis vulgaris patients compared with single use of halometasone or calcipotriol .It takes effect quickly ,and could be more feasible and safe .

Objectives To construct reference range of fetal optic tract mean diameter and to report the measured optic tract mean diameter in fetuses with agenesis of the septum pellucidum (SP).Methods Three-dimensional volumes of the optic chiasm were acquired in 254 normal fetuses during routine sonographic examination at 21 ～ 40 weeks' gestation and the diameters of posterior left and right optic tracts were measured offline.A polynomial regression approach was used to calculate reference charts for the fetal optic tract mean diameter.In addition,16 three-dimensional volumes were acquired in fetuses with SP agenesis for offline measurement of optic tract diameter.The complete follow-up data were obtained in 7 of these 16 cases.Results In normal fetuses,the optic tract diameter increased linearly throughout gestation.Normal charts and equations were constructed.Among 7 fetuses with SP agenesis and complete follow-up,one had postnatal normal vision,two had hypoplastic optic tract,and four underwent termination of pregnancy.Three cases of normal childbirth were tested after the baby was born as a bundle of apparent dysplasia,including 1 case of neonatal characterized by lack of vision at the one year old and 2 cases of impaired vision.Four cases of termination of pregnancy included 1 case with tracking pathological confirmation of optic nerve hypoplasia,and the other 3 cases without tracking the pathological results.Conclusions We present new reference charts for fetal optic tract mean diameter.In fetuses with agenesis of the SP,sonography of the optic tract might be a useful tool to assess its development and may help prenatal counseling.

OBJECTIVE To study the gene chip joint pyrosequencing technology in the newborn genetic deafness gene mutation screening, and provide a theoretical basis for the early diagnosis and prevention of genetic deafness. METHODS 2000 Neonatal EDTA umbilical cord blood was collected and genomic DNA (gDNA) was extracted. Microarray chip was used to detect four deafness gene at 9 mutation sites. And the positive result of gene chip detection was verified by pyrosequencing.RESULTS Among the GJB2 mutations, there were 1 case of 35delG mutation type, 3 cases of 176 del16 mutation type, 57 cases of 235del C mutation type, 9 cases of 299 del AT mutation type, 6 cases of GJB3 gene 538C>T mutation type. There were 5 cases of 1555A>G mutations and 1 case of 1494C>T mutations in mitochondrial 12S rRNA. There were 6 cases of 2168A>G mutation type and 23 cases of IVS7-2A>G mutations in SLC26A4. 103 cases of newborns carry the mutated gene in 2,000, the gene mutation rate is 5.15%. CONCLUSION All the four genes mutation at nine mutation sites are found in newborns with family history of non-hereditary deafness, and GJB2 gene mutation is common. The screening of genetic deafness in newborns is very important for early diagnosis and prevention of hereditary hearing loss. In particular, the diagnosis of mitochondrial 12S rRNA gene mutation can prevent the occurrence of deafness caused by drug use, for the genetic mutation of these carriers' health is of great significance.

ObjectiveTo investigate the feasibility of decreasing radiation dose and contrast media dose of abdominal CTA using low tube voltage setting combined with personalized contrast media application.MethodsOne hundred and twenty patients were randomly divided into 3 groups,and there were 40 patients in each group.120 kV tube voltage was used in group A,and 100 kV tube voltage was used in group B and C.Personalized injection flow rate of contrast media which determined according to patient's body mass (injection flow rate =λ × body mass) was used for all groups,and the λ values for group A,B and C were 0.07,0.07 and 0.06 ml · kg-1· s- 1 respectively. CT dose index volume ( CTDIvol ) effective dose(ED) and contrast media dose were evaluated,and these parameters were all analyzed using one-way ANOVA analysis.Image quality of abdominal aorta and branch arteries was rated using a three-point ordinal for all 3 groups,and image quality score was analyzed using Kruskal-Wallis test.ResultsCTDIvol were (8.2±0.8),(6.0 ±1.0) and (6.1 ±1.1)mGy for group A,B and C,ED were (5.2 ±0.8),(3.5 ± 0.7) and ( 3.6 ± 0.6) mSv,and contrast media dose were (72.3 ± 10.3 ),(73.5 ± 11.3 ) and (61.6 ±9.4) ml,respectively.There were significant differences in CTDlvol,ED and contrast media dose among 3 groups ( F =66.094,77.812,15.919 ; P =0.000).Compare with group A,the ED of group B was decreased 32.7％,and the ED and contrast media dose of group C were decreased 30.8％ and 14.8％,respectively.Image quality was rated as excellent,good,and general for 20,19 and 1 patients in group A,25,15 and 0 patients in group B,and 23,17 and 0 patients in group C,respectively.There was no significant difference in image quality score among 3 groups ( x2 =1.492,P =0.474 ).ConclusionsThe radiation dose and contrast media dose can be decreased in abdominal CTA using low tube voltage and personalized contrast media apolication while image quality can be preserved.