Objective To observe the effect of exogenous basic fibroblast growth factor (bFGF) on apoptosis of cultured human retinal pigment epithelial (RPE) cells exposed to visible light,and determine the role of bFGF, fibroblast growth factor receptor 1 (FGFR1),bcl 2 and caspase 3. Methods (2000? 500) lx cold white light was used. Exogenous bFGF was utilized during culture. Annexin annexin V fluorescein isothiocyanate/propidium iodium (V FITC/PI) labeling,flow cytometry, Immunocytochemical staining, enzyme associated absorb examing and reverse transcriptional polymerase chain reaction (RT PCR) were used to determine the apoptosis, the expression levels of bFGF, FGFR1, bcl 2, as well as the activity of caspase 3. Results No protective effect of bFGF was observed under the concentration 5 ng/ml. A significant inhibition of apoptosis was found in 10 ng/ml and 20 ng/ml groups ( P5 ng/ml) groups than light exposure groups ( P

Objective To observe the effect of visible light on apoptosis of cultured human retinal pigment epithelium (RPE) cells. Methods Being the light source,500lx,(2 000?500)lx and (3 400?200)lx cold white light were used. The duration of exposure was 0,6,12 and 24 hours respectively. Apoptosis was detected by terminal deoxynucleotidyl transferase mediated dUTP nick end labelling, Annexin V flunorescein isothiocyanate/Propidium iodium labelling and flow cytometry. Results Apoptosis and necrosis were found in cultured human RPE cells which were exposed to visible light.(1)A significant increase in apoptotic and necrotic percentages was consistent with a higher light intensity.(2)Apoptosis was the main response to shorter (6 h and 12 h) exposure duration,while necrosis was more pronounced correlated to the prolongation of post exposure culture ( P 500 lx) increases the proportion of apoptosis and necrosis of human RPE cells in vitro.The extent is related to exposure intensity and duration. It demonstrates that the lower intensity and the shorter duration of exposure to light are, the more pronounced apoptotic percentages are observed,otherwise necrosis.

Objection To estabish a HPLC methold for determining the contents of pinoresinol diglucoside and chlorogenic acid in Sam Soup and its solid decoction. Methods Chromatographic column was Ultimate XB-C18 reversed-phase chromatography column (250 mm×4.6 mm, 5 μm). Mobile phase was acetonitrile-0.4% glacial acetic acid with gradient elutim. The flow rate was 1.0 mL/min, detection wavelength was 277 nm, and column temperature was 40 ℃. Results The pinoresinol diglucoside and showed good linear relationship in the range of 5.0-50.0 μg, r =0.999 9 (n =6), and chlorogenic acid showed linear relationship in the range of 5.4-54.0 μg, r=0.999 6 (n=6). The average recoveries of pinoresinol diglucoside and chlorogenic acid were 98.75% (RSD=1.39%) and 101.11% (RSD=2.69%), respectively. Conclusion The established method was accurate and reliable. The contents of pinoresinol diglucoside and chlorogenic acid in solid decoction are higher than traditional decoction of Sam Soup.

AIM: To observe the effect of diammonii glycyrrhizinatis (DG) on collagen synthesis induced by angioplasty in rabbits. METHODS: The right common carotid artery of male rabbits were injured with 3.5F balloon catheter. Four weeks after operation, arterial tissure collagen content, serum procollagen type I(PCI)， procollagen type Ⅲ(PCⅢ) concentration, neointimal thickness and the rate of stenosis were measured.RESULTS: Arterial tissue collagen content, serum PCI, PCⅢ concentration, neointimal thickness and the rate of stenosis of low and high dose DG group is lower than those of injured group.CONCLUSION: DG could inhibit collagen synthesis and neointimal proliferation of rabbits carotid artery induced by angioplasty. It suggests that DG might have clinical potential prespective in prevention and therapy of restenosis.

Objective To explore the effects of Sanchi gel on MMP-1 and TIMP-1 expression in epidural adhesion after laminectomy. Methods Laminectomy model was set up in SD rats. 72 SD model rats were divided randomly into Saline group, Zhanlp group, Carbopol Gel group and Sanchi Gel group, with 18 rats in each group. On 7, 14 and 21 days after the laminectomy, immunohistochemistry (method of S-P) was adopted to detect the expression of TIMP-1 and MMP-1. Results Different treatments had different influence on TIMP-1 and MMP-1 expression in epidural adhesion. The expression of TIMP-1 increased gradually on 14 dand 21 d after operation, and Sanqi Gel group showed weaker expression than the other groups (P＜0.05), but the number of positive cells decreased gradually. As to the expression of MMP-1, there was no difference among each group at the end of the second week (P＞0.05). There was a difference between Sanchi Gel group and the other groups at the end of third week (21 d) (P＜0.05) after operation. Sanchi Gel group showed higher expression of TIMP-1 than the other groups. The number of positive cells sharply decreased from 14 d to 21 d after operation. Conclusion Sanchi Gel has a significant preventive effect on fibrous scar formation after laminectomy. The possible mechanism of preventing epidural adhesion after laminectomy by Sanchi Gel could be its regulating and controlling the expression of TIMP-1 and MMP-1 in epidural tissue.

Objective To investigate the detection of human bocavirus (HBoV) in children with acute respiratory infection and to explore the relationship between viral load and clinical characteristics of acute respiratory infection in children.Methods A total of 4 501 nasopharyngeal secretion samples were collected from hospitalized children with acute respiratory infection from January 2013 to June 2013.HBoV-positive children were divided into simple infection group and mixed infection group.Children with HBoV DNA≥1 × 104 copy/mL were categorized into high viral load group,while those with HBoV DNA ＜1 × 104 copy/mL were categorized into low viral load group.HBoV was determined by fluorescence quantitative polymerase chain reaction (PCR).Respiratory syncytial virus (RSV),influenza virus (Inf)-A,Inf-B,parainfluenza virus (Pinf)-Ⅰ 、Pinf-Ⅱ 、Pinf-Ⅲ and adeno virus antigen were detected by direct antigen-specific immunofluorescence assays.Mycoplasm Pnuemonia was detected by real-time fluorescence quantitative PCR.Serum mycoplasma antibodies were detected by enzyme-linked immunosorbent assay (ELISA).Bacteria was detected by sputum culture.Over the same period,23 children undergoing elective inguinal hernia operation with no respiratory infection or fever were considered as control group.The percentage of peripheral blood T lymphocyte subsets were tested by flow cytometry.Inter-group differences were compared using Chi-square test or Fisher exact test.Viral loads were compared using Mann-Whitney test.Results Two hundred and twenty-two HBoV-positive cases were detected with a positive rate of 5.41％ (222/4 105),33.33％ (74/222) of which were with high viral load and 66.67％ (148/222) were with low viral load.There was a high incidence in the age group of 1-2 years.The simple HBoV infection accounted for 24.32％,including 26 cases with high viral load and 28 cases with low viral load.Wheezing was more common in patients with high viral load than those with low viral load,and the difference was statistically significant (88.46 ％ vs 42.86 ％,x2 =12.295,P=0.001).Among the 222 HBoV-positive cases,the median viral load of HBoV in simple infection group was 3.86 × 103 copy/mL,and 1.0× 103 copy/mL in mixed infection group.The difference of the viral load between these two groups was statistically significant (Z =2.906,P =0.004).Mycoplasma and Streptococcus pneumonia were most commonly detected in the 168 patients with mixed infection.Percentages of CD3+ and CD3+/CD8+ subsets were significantly lower in HBoV simple infection group and mixed infection group,compared to control group (both P＜0.05).However,percentages of CD3 /CD19+,CD19+/ CD23+ subsets were significantly higher in HBoV simple infection group and mixed infection group,compared to control group (both P＜0.05).Conclusions HBoV is one of the pathogens causing acute respiratory tract infection in children,which lead to cellular immunity dysfunction in children.Moreover,children with higher HBoV load are more likely to develop wheezing.Co-infection with other pathogens should be considered in children with low HBoV load.

0.05). However,life quality was improved and the improvement of clinical symptoms was more obviously in the treatment group as compared with the control group.Conclusion KI combined with chemotherapy and radiotherapy could increase the effects,improve and decrease the side effects.

AIM: To observe the effect of diammonii glycyrrhizinatis (DG) on collagen synthesis induced by angioplasty in rabbits. METHODS: The right common carotid artery of male rabbits were injured with 3.5F balloon catheter. Four weeks after operation, arterial tissure collagen content, serum procollagen type I(PCI), procollagen type Ⅲ(PCⅢ) concentration, neointimal thickness and the rate of stenosis were measured.RESULTS: Arterial tissue collagen content, serum PCI, PCⅢ concentration, neointimal thickness and the rate of stenosis of low and high dose DG group is lower than those of injured group.CONCLUSION: DG could inhibit collagen synthesis and neointimal proliferation of rabbits carotid artery induced by angioplasty. It suggests that DG might have clinical potential prespective in prevention and therapy of restenosis.

BacKground:AchaIasia of cardia is categorized into 3 subtypes by Chicago cIassification criteria defined by high-resoIution manometry( HRM). These different subtypes present different cIinicaI and esophageaI dynamic characteristics. Aims:To study the cIinicaI and esophageaI dynamic characteristics of patients with achaIasia of cardia categorized by Chicago cIassification criteria. Methods:Twenty-five untreated achaIasia of cardia patients from January 2012 to ApriI 2014 at Beijing Friendship HospitaI,CapitaI MedicaI University were enroIIed. CIinicaI data incIuding cIinicaI symptoms, manifestations of endoscopy and barium meaI radiography and data of HRM were anaIyzed retrospectiveIy. Results:Of the 25 patients,5 patients(20. 0%)were cIassified as type Ⅰ,15(60. 0%)as type Ⅱ and 5(20. 0%)as type Ⅲ. AII patients compIained as having dysphagia,and 26. 7%( 4/15 ) of type Ⅱ patients had chest pain. Incidences of regurgitation in typeⅠ,ⅡandⅢwere 60. 0%(3/5),53. 3%(8/15)and 20. 0%(1/5),respectiveIy,no significant difference was found among the three types(P>0. 05). Incidences of diIatation of esophagus in type Ⅰ,ⅡandⅢwere 60. 0%(3/5),73. 3%(11/15)and 20. 0%(1/5),respectiveIy,no significant difference was found among the three types (P=0. 11). No differences in Iength of Iower esophageaI sphincter(LES),abdominaI LES Iength,LES resting pressure, upper esophageaI sphincter( UES)resting pressure and integrated reIaxation pressure( IRP)among the three types were found(P>0. 05). Incidences of muItipIe swaIIowing and spontaneous UES reIaxation were 32. 0%(8/25)and 24. 0%(6/25),respectiveIy,no significant difference was found among the three types(P>0. 05). Conclusions:Of the patients with achaIasia of cardia ,typeⅡis more common. Large-sampIe muIticenter studies are needed for further research.

By analysing the anatomy of upper cervical segment, the atlas - axis relation in plain X - ray film in 3-1 cases revealed that the joint displacement is one of the important causes for vertebral artery type or sympathetic type cervical spondylopathy. The main manifestations for diagnosing atlas - axis displacement included headache, dizziness, unilateral protrusion and tenderness of the affected vertebra, displacement of tooth protrusion up to 1 mm at anterior mouth -open positions. The most effective therapy was accurate and dexterousmanipulation for reduction.