Retinal neovascularization is a phenomenon observed in various kinds of eye diseases and it can threaten the visual function of patients. Medical treatment to inhibit retinal neovascularization will give them effective help. This article reviewed animal models of retinal neovascularization and researching development of medicine in this field.

AIM:To establish a method for determining saikosaponin A,paeoniflorin,hesperidin and ferulic acid in Chaihu Shugan Powder(Pericarpium Citri Reticulatae,Radix Bupleuri,Rhizoma Chuanxiong,Fructus Aurantii,Radix Paeoniae alba,etc.).METHODS:The chromatographic saparation was performed on a Hypersil C_(18) column(250 mm×4.6 mm,5 μm).The mobile phase was acetonitril-water(43:57)for saikosaponin A,and the mobile phase for rest components was acetonitrile-0.5% acetic acid(40:60).All of flow rates were 0.8 mL/min and column temperature maintained at 30℃.The detection wavelength was set at 200-400 nm.RESULTS:The four constituents were separated within 15 min.The linear ranges of saikosaponin A,paeoniflorin,hesperidin and ferulic acid were 38.5-166.7 μg/mL(r = 0.999 6),15.9～254.5 μg/mL(r = 0.999 9),22.1-353 μg/mL(r =0.999 3),6.30-201.5 μg/mL(r =0.999 9),respectively.The average recoveries were 97.57%,97.40%,98.86%,96.37%,respectively.The RSD were 2.1%,1.1%,0.70%,1.3%,respectively.CONCLUSION:The method is rapid,simple and accurate,and can be used for quality control of Chaihu Shugan Powder.

AIM:To establish a method for determining saikosaponin A,paeoniflorin,hesperidin and ferulic acid in Chaihu Shugan Powder(Pericarpium Citri Reticulatae,Radix Bupleuri,Rhizoma Chuanxiong,Fructus Aurantii,Radix Paeoniae alba,etc.).METHODS:The chromatographic saparation was performed on a Hypersil C18 column(250 mm?4.6 mm,5 ?m).The mobile phase was acetonitril-water(43:57) for saikosaponin A,and the mobile phase for rest components was acetonitrile -0.5% acetic acid(40:60).All of flow rates were 0.8 mL/min and column temperature maintained at 30 ℃.The detection wavelength was set at 200-400 nm.RESULTS:The four constituents were separated within 15 min.The linear ranges of saikosaponin A,paeoniflorin,hesperidin and ferulic acid were 38.5-166.7 ?g/mL(r=0.999 6),15.9～254.5 ?g/mL(r=0.999 9),22.1-353 ?g/mL(r =0.999 3),6.30-201.5 ?g/mL(r=0.999 9),respectively.The average recoveries were 97.57%,97.40%,98.86%,96.37%,respectively.The RSD were 2.1%,1.1%,0.70%,1.3%,respectively.CONCLUSION:The method is rapid,simple and accurate,and can be used for quality control of Chaihu Shugan Powder.

Objective To investigate the expression and significance of Smad4 and Smad7 in newborn rats with hyperoxia-induced chronic lung disease(CLD).Methods Sixty-four newborn Wistar rats 12 h after birth were divided into high-oxygen group (n =32) and air group (n =32,control group) by random number table method.The high-oxygen group was placed in the oxygen glass tank with continuous infusion of oxygen.And 1,3,7,14 d after experiment,tracheal separated,the chest opened to expose heart and lung,slices were Masson staining,undergo dynamic observation of the pulmonary pathological changes under light microscope.Lung fibrosis score was carried out to determine the degree of pulmonary fibrosis,and immunohistochemical technique was used to detect Smad4 and Smad7 protein expression in lung tissue.The expression levels of Smad4 and Smad7 protein in lung tissue were detected with Western blot.Results Compared with the air group,there was statistically significant difference in pulmonary fibrosis score on day 7 (2.67 ± 0.21 vs 0.58 ± 0.17) and day 14 (4.48 ± 0.24 vs 0.63 ± 0.13) in high-oxygen group (P ＜ 0.05) ; Smad4 and Smad7 was main in visible lung epithelial cells and interstitial fibroblasts.Smad4 expression in the high-oxygen group gradually enhanced,compared with the air group (P ＜ 0.05) on day 7 (122.35 ± 10.3 vs 140.08 ±7.77) and day 14(129.7 ± 7.33 vs 144.99 ± 6.49).Smad7 expression in the high-oxygen group first increased and then decreased,expression in the high-oxygen group increased on day 7 (122.35 ± 10.29 vs 130.56 ±9.8),and compared decreased with the air group(P ＜0.05) on day 14(132.16 ±4.38 vs 126.22 ±6.49).Conclusion The newborn rat exposed hyperoxia,the up-regulation of Smad4 protein expression and the down-regulation of Smad7 protein expression are imposible closely related to the happen and development of CLD pulmonary fibrosis.

Objective To explore changes of serum fibroblast growth factor 2 (FGF2) levels after treatment with imatinib mesylate in patients with unresectable or metastatic gastrointestinal sromal tumor.Methods Serum FGF2 levels (with ELISA) were determined in 27 patients with unresectable or metastatic gastrointestinal stromal tumor both before and after treatment with imatinib mesylate.Results Before treatment with imatinib mesylate,of 27 cases of unresectable or metastatic gastrointestinal stromal tumor,17 cases (63.0 ％) were found positive for serum FGF2,after treatment with imatinib mesylate,9 cases (33.3 ％) were found positive for serum FGF2 (P ＜ 0.05).Using imatinib mesylate for 3 months,complete remission rate was 0,partial remission rate was 51.9 ％ (14/27),stable disease rate was 48.1％ (13/27) and progressive rate was 0.Conclusion Patients with unresectable or metastatic gastrointestinal stromal tumor have elevated serum FGF2 levels.Imatinib mesylate treatment can reduce serum FGF2 levels in patients with unresectable or metastatic gastrointestinal stromal tumor.

Objective:To establish the mouse model of retinal neovascularization. Methods:Twenty neonatal C57BL/6J mice were divided into two groups randomly.The treated group was exposed to 75% oxygen for 5 days and then to room air.All animals were sacrificed at postnatal day 17 and both eyes were enucleated.Endothelial cell nuclei extending into the internal limiting membrane were counted via HE stain and the expression of vascular endothelial growth factor(VEGF) was detected via immunohistochemical stain. Results:On average,25.70?4.90 endothelial cell nuclei were seen in the treated group and 0.85?1.02 in the control group.The difference was statistically significant(P

Objective To investigate the pathological features and clinical characteristics of primary mitochondrial myopathy and encephalomyopathy. Methods 11 cases of mitochondrial myopathy and encephalomyopathy were analyzed on clinical features, histochemical changes and ultrastructure observations of muscles. Results RRFs were found in all 11 cases by muscle staining of MGT under light microscope. 7 cases were only afflicated with muscle weakness, 4 cases also having impairment of central nervous system. The proportion of RRFs was 6.4% to 10.3%. We observed these cases under electronic microscope. In 9 cases,the ultrastructural alterations included subsarcolemmal accumulation of mitochondria,increases of the number,abnormal shape,disarrangement of cristae and paracrystaline inclusion bodies. In 2 cases the increase of mitochondrial number is only the alteration. Conclusions Typical RRF is valuable for diagnoses of mitochondrial myopathy and encephalomyopathy under light microscope. The accumulation of abnormal mitochondrials beneath sarcolemal,especially the paracrystaline inclusion bodies are significant in making a definite diagnosis of this disease under electronic microscope.

Field practice teaching is an important part in pharmaceutical botany. According to the problems in the traditional field practice, an innovative system of field practice teaching was built. A series of reform and innovation was integrating and rationally allocating the existing resources. Combining the tra-ditional cognitive practice teaching and self-study, image-text card of medicinal plant was edited to enrich the teaching content, and the diversification of evaluation methods was proposed. This method could mobi-lize the enthusiasm of the students, improve the comprehensive quality of students and obtain good teaching effect.

Objective To investigate the effects of imatinib mesylate on recurrent or metastatic gastrointestinal stromal tumor.Methods Thirty-five cases of patients with recurrent or metastatic gastrointestinal stromal tumors treated with Imatinib mesylate from January 2007 to February 2010 in our hospital were analyzed retrospectively.Results After treated with Imatinib mesylate for 3 months,complete remission rate was 2.9％( 1/35 ),partial remission rate was 45.7％ ( 16/35 ),stable disease rate was 51.4％ ( 18/35 ) and progressive rate was 0;clinical benefit rate was 100％.The 2-year overall survival rate was 97.1％.The 2-year progression free survival was 82.9％.Conclusion Imatinib mesylate is effective for recurrent or metastatic gastrointestinal stromal tumors and the treatment is safe and reliable.

Objectives: To observe the clinical course of diffuse lamellar keratitis(DLK) after laser in situ keratomileusis(LASIK) and to investigate the presentation and management of DLK. Methods:Among 3500 patients underwent LASIK in our center, 18 eyes in 10 patients received DLK were examined. All eyes were examined with slitlamp biomicroscope at the course of 3 days,7 days,14 days,1 month, 2 months and 6 months after the operation. Visual actuity was measured. Results:Symptoms were controlled after 1 week treatment of topical corticosteroids and antibiotics. Resolution of DLK occurred after 1 to 2 months. Uncorrected visual acuity is 1.0 to 1.5 in 16 eyes and 0.8 to 1.0 in 2 eyes. Conclusions:DLK is a complication after LASIK, it usually occurs in 1 to 7 days postoperatively, more likely in male. Topical corticosteroids and antibiotics can get a satisfied outcome. Systemic corticosteroids and antibiotics are needed in serious cases. Early stage of DLK must be distinguished from corneal epithelial implantation and interface infection.