8c

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 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.

Objective To assess the value of echocardiography in guiding surgical operation approach of ventricular septal defect (VSD). Methods A total of 200 patients with VSD underwent surgical repair. The type of VSD was determined with echocardiography before operation and the results were analyzed in comparison with operation approach. Results There was significant accordance in the type of VSD detected with echocardiography and the surgical findings, and the coincidence rate of 80.00%. The transatrial approach was chosen in patients with perimembranous VSD, subseptal cusp VSD and simple membranous;the anspulmonary approach was chosen in subarterial VSD, while transventricular approach was chosen in muscular VSD or VSD with large size. Combined approach was suitable in VSD complicated with intracardiac malformations. Conclusion The type of VSD determined with echocardiography plays a key role in the selection of operation approach, and is benefit to reducing complications.

The circle of Willis is the major cerebral collateral circulation.Its anatomical variation is in populations higher.The previous studies showed that anatomical variation in circle of Willis was an independent risk factor for cerebral ischemia.This article reviews the relationship between the various anatomical variation types of the circle of Willis and cerebral ischemia.

To investigate and analyze inadvisable combination of Chinese materia medica recorded in China Pharmacopeia 2005 edition and 2010 edition, and to provide convenience for physicians and pharmacists in clinical practice.

OBJECTIVE To investigate the drug sensitivity situation of Acinetobacter baumannii(ABA) in 3 years to instruct clinical application of the antibiotics.METHODS The drug sensitivity test data of the 428 A.baumannii(ABA) strains from 2006 to 2008 were analyzed retrospectively.RESULTS It was showed from the drug sensitivity test in vitro that the most sensitive drug for A.baumannii(ABA) was imipenem,which resistance rate was 11.3-34%.The resistance rate to amikacin was 29.8-49.5% and to penicillins was is 57.7-91%,the resistance rate to of penicillins drugs was 54-74.5%.The resistance of ABA to ampicillin,cefazolin,cefpodoxime and Cefoxitin was over 91%,and showed the multi-drug resistance features.CONCLUSIONS According to the result of drug sensitive test,the most effective antibiotics are imipenem,meropenem and polymyxin B sulfate.

0.05). - 40 mV activated threshold potential and - 30 mV peak potential for control group respectively droppedto - 60 mV and - 40 mV after irradiating 7 min. The half-activation voltage and the slope factor of the activationcurves of Na+ channel were also changed by the laser's exposure. The former changed from (- 42.091 ?1.537) mVto (54.971 ?1.846) mV (n= 8, P

Objective To evaluate the diagnostic role of high frequency ultrasonography(HFU) and CDFI for breast tumor,especially to evaluate the correlation of pathology in hyperplasia of breast.Methods HFU and CDFI findings were compared with pathological study in 196 cases with confirmed breast tumor.The tumor of breast were divided into three groups.They were 81 cases of fibrocystic disease ofbreast,70 cases of breast cancer and 45 cases of fibroadenoma disease of breast.Results The benign and nicious tumor of breast haddifferent and typical represent of HFU,because dates of HUF had correlation with those of pathology,such as tumor boundary,internalecho,mononode and multinode,calcification,attenuation and CDFI.Some patients had crossed represent of HUF and CDFI.Thesensitivity,specificity and accuracy rate were calculated apart from.The sensitivity of fibroscystic disease of breast was 89%,the specificity was 96.5%,the accuracy was 93%,the negative predictive value was 93%,the postive predictive valus was 95%;the sensitivity of cancer of breast was 89%,the specificity was 94%,the accuracy was 92%,the negative predictive value was 96%,the post predictive valus was 89%;the sensitivity of fibroadenoma of breast was 89%,the specifity was 93%,the accuracy was 92%,the negative predictive value was 96%,the postive predictive value was 80%.Conclusion HUF in combination with CDFI are useful in diagnosis of both male and female breast tumor.This study may be helpful in raising the ultrasonic diagnosis rate in breast tumor.

Objective To study the chemical constituents from EtOAc extracts of Paeonia lactiflora. Methods Compounds were isolated by various chromatographic techniques and structures were elucidated on the basis of spectral analysis. Results Seventeen compounds were obtained and their structures were identified as l,2,6-benzenetriol-l-O-α-D-glucoside (1), paeoniflorin (2), 4-methylpaeoniflorin (3), albiflorin (4), paeonidanin (5), benzoylpaeoniflorin (6), 4-methylbenzoylpaeoniflorin (7), benzoylalbiflorin (8), paeonidanin A (9), galloylalbiflorin (10), debenzoylalbiflorin (11), 4',5-dihydroxyflavanone-7-O-β-D-glucoside (12), 5,7-dihydroxy flavanone-4'-O-β-D-glucoside (13), (+)-catechin (14), gallic acid (15), vanillic acid (16), and 1,2,3-benzenetriol (17). Conclusion Compound 1 is a new compound named paeoniphenoside. Compounds 12 and 13 are firstly obtained from genus Paeonia L., and compounds S and 9 are isolated from P. lactiflora for the first time.