Objective To observe the effect of intravitreal triamcinolone acetonide injection on choroidal neovascularization in brown Norway rats. Methods Thirty-six healthy brown Norway rats were divided randomly into control group (n=18) and experimental group (n=18), while one eye was chosen randomly as experimental eye. The choroidal neovascularization model was establishied, while 8μl triamcin-olone acetonide was injected in vitreous body immediately after photocoagulation in the experimental group, and the same volume isotonic balanced salt solution was injected in the control group. The eyes of six rats were enucleated for histological slices in the second, forth, and sixth week, respectively. The expression of nuclear factor-kappa B was detected with immunohistochemical method, and the max area of choroidal neovascularization was also measured. Results The area of choroidal neovascularization was smaller, and the expression of nucle-ar factor-kappa B was lower in the experimental group than in the control group (t>7.450, P<0.001). Conclusion Triamcinolone acetonide could effectively inhibit the development of choroidal neovascularization, and decrease the expression of nuclear factor-kappa B in brown Norway rats.

Background Extracellular matrix (ECM) has various kinds of types and important biological function.The important role of ECM during choroidal neovascularization (CNV) arouse attention.Intercellular adhesion molecule-1 (ICAM-1), which is one of ECMs, involves in the formation of blood vessels, but the relationship between CNV and ICAM-1 is still unknown.Objective This study was to observe the dynamic expression of ICAM-1 in krypton laser-induced CNV and explore the effect of ICAM-1 on CNV.Methods Forty-eight healthy male clean BN rats were randomly divided into post-photocoagulation 1-week group,2-week group,3-week group,4-week group, 5-week group, 6-week group, 7-week group and 8-week group.Laser-induced CNV models were monocularly established and the fellow eyes served as the normal controls.Fundus fluorescein angiography (FFA) was carried out to quantitate the leakage degree (absorbency).The eyeballs were enucleated on various time points,and CNV areas were assessed by hematoxylin and eosin staining;immunohistochemistry and in situ hybridization assay were employed, respectively, for the detection of relative expression levels of ICAM-1 protein and mRNA (absorbency).The use and care of the animals complied with the Regulations for the Administration of Affair Concerning Experimental Animals by State Science and Technology Committee.Results After laser photocoagulation,the retinal inner and outer nuclear layers were ruptured and invaginated.Disruption of Bruch membrane and macrophages migrating to the photocoagulation zone were seen under the optical microscope.The proliferation of fibroblasts and vascular endothelial cells was exhibited.ICAM-1 protein was mainly expressed in vascular endothelial cells,retinal pigment epithelium (RPE) cells and macrophages,and ICAM-1 mRNA was mainly expressed in the outer nuclear layer.Statistically significant differences were found in the fluorescence leakage degree, the relative expression levels of ICAM-1 protein and mRNA as well as CNV areas among the groups (F=178.839, 739.077,2 463.508,194.434, all at P＜0.05).The gradually enlarged CNV area, increased fluorescence leakage, up-regulation of ICAM-1 protein and mRNA expressions were matched with the extension of time after photocoagulation and peaked in the post-photocoagulation 8-week group.Conclusions The expressions of ICAM-1 protein and mRNA up-regulate upon the increase of CNV area and fluorescein leakage, suggesting that ICAM-1 might play an important role in CNV development.

Objective To study the mechanism of p55 inducing cell apoptosis, the 180 bp fragment of Puma promoter was cloned into the pGL3-basic luciferase reporter vector. The biological activity of Pumareporter plasmid was verified by cell transfection. Methods The target fragments of Puma were amplified by RT-PCR method and the fragments were inserted into the pGL3-basic luciferase reporter vector. The acquired Puma-Luc plasmid was transfected into H1299 cell line and detected its activity. Results Sequencing indicated that the amplified Puma promoter is correct. Dual-luciferase Reporter Assay showed the Puma-Luc constructs have promoter activity. Conclusion The cloning of human Puma gene promoter and the construction of its reporter vector were successful. This study will lay the foundation for further research on the function of p53 inducing apoptosis through mitochondrial pathway.

Objective: To assess the quality of syphilis case reporting from hospitals in Hunan Province .Methods The syphilis cases reported by 126 middle second-class and above hospitals in the year 2010 and 2017 were retrieved from unified infectious case reporting network and compared with original reporting cards,medical records and laboratory testing records according to the Diagnostic Criteria for Syphilis （WS 273-2018）and the Guidelines for the Clinical Diagnosis and Treatment of Sexually Transmitted Diseases. The accuracy of syphilis diagnosis and classification were evaluated between different reporting years,types of hospitals,levels of hospitals and departments . Methods: The syphilis cases reported by 126 middle second-class and above hospitals in the year 2010 and 2017 were retrieved from unified infectious case reporting network and compared with original reporting cards,medical records and laboratory testing records according to the Diagnostic Criteria for Syphilis （WS 273-2018）and the Guidelines for the Clinical Diagnosis and Treatment of Sexually Transmitted Diseases. The accuracy of syphilis diagnosis and classification were evaluated between different reporting years,types of hospitals,levels of hospitals and departments . Results: There were 8 947 syphilis cases reported in 2010 and 13 552 syphilis cases reported in 2017. The accuracy of syphilis diagnosis and classification were 98.81% and 98.66% in 2017,which were higher than 36.39% and 36.10% in 2010 （P<0.01）. The accuracy of syphilis diagnosis in the provincial,municipal and county-level hospitals in 2017 were 99.07%,99.20% and 98.17%;the accuracy of syphilis classification were 98.91%,99.03% and 97.99%;the accuracy of syphilis diagnosis and classification were significantly different in different levels of hospitals（P<0.01）. The accuracy of syphilis diagnosis in the general hospitals,traditional Chinese medicine hospitals and maternal & child health hospitals in 2017 were 99.25%,96.92% and 97.57%;the accuracy of syphilis classification were 99.13%,96.72% and 97.30%;the accuracy of syphilis diagnosis and classification were significantly different in different types of hospitals（P<0.01）. The accuracy of syphilis diagnosis in the department of dermatology and non- dermatology in 2017 were 99.13% and 98.74%;the accuracy of syphilis classification were 99.02% and 98.58%;the accuracy of syphilis diagnosis and classification were not significantly different in different departments（P>0.05） . Conclusion The accuracy of syphilis diagnosis and classification have been improved in 2017,which varies in different levels and types of hospitals.