Fascin在肺癌中的表达及临床探讨

Objective To investigate Fascin expression in human lung cancer tissues and its clinical significance.Methods Immunohistochemistry was performed in 62 patients with different histological types and clinical stages of lung cancer and 92 cases with other malignant tumors.Fascin positive rate in each group was calculated and the differences of pathological characters between the two groups were analyzed.Results Fascin expression in lung cancer tissues was significantly higher than that in normal lung tissues(P ＜ 0.05),its expression varied by different clinical stage of lung cancer tissue differentiation.As differentiation degree decreased,Fascin positive rate increased.Fascin expression was independent with age,sex,smoking history(P ＞ 0.05).Fascin expression had no significant difference between lung cancer group and other tumor group(P ＞ 0.05).Conclusions Fascin expression raising might be common in malignant tumors.Fascin expression in lung tissues indicated the possibility of lung cancer.In lung tissue,high expression of Fasein was a sign of poor differentiation and malignant status of lung cancer.     

Protective effect of Scrophularia striata combined with trehalose and cysteine added to diluents on cryopreservd goat epididymal sperm

Objective:To evaluate antioxidant effects of Scrophularia(S.)striata ethanol extract,trehalose and cysteine added to diluents on cryopreserved goat epididymal sperms.Methods:Motility and standard motion parameters of sperm were assessed by using computer assisted sperm motility analysis system.Sperm viability was evaluated by eosin-nigrosin staining method.Hypo-osmotic swelling test was used to evaluate membrane health.Thiobarbituric acid testing was used to measure malondialdehyde(MDA)concentrations.To assess DNA fragmentation,sperm chromatin dispersion test was used.In Experiment 1,treatments consisting of basal Tris diluent supplemented with 25,50 or 100µg/mL of S.striata ethanol extract gave the best concentration to the freezing diluents.Experiment 2 was carried out to compare the best concentration of S.striata ethanol extract(50µg/mL)resulting from the first experiment with 150 mM trehalose and/or 5 mM cysteine alone or in combination.Results:S.striata ethanol extract(50µg/mL)significantly increased sperm viability,motility and progressive motility and at the same time decreased MDA concentration and DNA fragmentation compared to other treatments(P<0.05).In addition,all treatment groups resulted in viability,membrane health,total motility,progressive motility,curvilinear velocity,straightline velocity higher and MDA lower compared to the control group(P<0.05).Acrosome integrity was significantly higher in 50µg/mL of S.striata ethanol extract combined with cysteine,trehalose,or cysteine+trehalose groups than those in the control,trehalose,cysteine,and 50µg/mL of S.striata ethanol extract groups(P<0.05).Regarding DNA,extenders supplemented with 50µg/mL of S.striata ethanol extract,50µg/mL of S.striata ethanol extract+trehalose,and 50µg/mL of S.striata ethanol extract+trehalose+cysteine were superior to other treatments.Conclusions:Adding 50µg/mL of S.striata ethanol extract alone or in combination with trehalose and cysteine can improve the quality of cryopreserved epididymal sperms of goats.     

The expression and meaning of TGF-β and TGIF in endometrosis

Objective To explore the role of TGF-βand TGIF in the pathogenesis of endometriosis. Methods The expression of TGF-β and TGIF was detected by immunohistochemistry method in the ectopic and eutopic endometrium of 30 cases with endometriosis (ec-topic endometrium group and eutopic endometrium group) and in the normal endometrium of 40 cases without endometriosis (control group). Result The expression of TGF -β in ectopic endometrium group was significantly higher than that in eutopic endometrium group and control group (P < 0.05). There was no significant difference in the expression of TGF- βbetween eutopic endometrium group and control group(P > 0.05). The expression of TGIF in ectopic endometrium group was significantly lower than that in eutopic endometrium group and control group( P <0.05). There was no significant difference in the expression of TGIF between eutopic endometrium group and control group(P > 0.05). There were negative correlation between the expressions of TGF - β and TGIF in ectopic endometrium group and eutopic endome-trium group(rs= - 0.769, - 0.549, P < 0.05). Conclusion The abnormal expression of TGF-β and TGIF in ectopic endometrium of pa-tients with endometriosis may be associated with the genesis and progression of endometriosis.     

激光泪道成形联合药膏灌注术后冲洗时间对疗效的影响

Objective To investigate the curative effect of different time of irrigating after endolacrimal recanalisation surgery by Nd:YAG laser combining eye ointment stuffing. Methods Seventy-five cases (75 eyes) of lacrimal duct obstruction, which received endo-lacrimal recanalisation surgery by Nd:YAG laser combining eye ointment stuffing were divided into three groups by random digits table with 25 cases in each group. Group A received irrigating: the first day postoperative, consecutive 3 days,followed by once a week till a month. Group B received irrigating:the third day postoperative, consecutive 3 days,followed by once a week till a month. Group C received irrigating:the sixth day postoperative, consecutive 3 days, followed by once a week till a month. Followed-up survey for 12 months at the ophthalmologic outpatient clinic,the curative effect in each group was compared. Results In 6 months after surgery, the comparison of the curative effect was no statistical difference between group B and group C (P＞ 0.05), while the curative effects in group B and group C was superior to that in group A (P ＜ 0.05). In 12 months after surgery, the curative effect in group C was better than that in group A and B, the difference were statistically significant (P＜0.05). But there was no statistical significance compared with group A and group B (P＞0.05). Conclusions Properly delayed irrigating may improve the curative effect after endo-lacrimal recanalisation surgery by Nd:YAG laser combining eye ointment stuffing, while easier irrigating can increase the incidence of re-blockage of lacrimal duct and reduce the efficacy.     

Effect of schisandrin B on lung mRNA expression of transforming growth factor-β1 signal transduction molecule in rat lungs exposed to silica

Objective To investigate the effects of schisandrin B (Sch-B) on expression of transforming growth factor-β1 (TGF-β1) and signal transduction molecule mRNA in rat lungs exposed to SiO2,and explore the intervention mechanism of Sch-B on pulmonary fibrosis induced by SiO2. Methods Ninety six Wistar rats were randomly divided into control (normal saline) group, SiO2 group and SiO2 plus Sch-B group.The rats were exposed to SiO2 by direct tracheal instillation to establish the silicotic animal models. SiO2 group and SiO2 plus Sch-B group were treated with 1ml SiO2 (50 mg/ml) for each rat From the first day after model establishment, SiO2 plus Sch-B group were orally given Sch-B (80 mg/kg) a day, control group and silica group were orally given olive oil. On the 3rd, 7th,14th and 28th days after treatment, 8 rats in each group were sacrificed and samples were collected. The histo-pathological examination of lung was performed by HE staining. The expression levels of TGF-β1 、TGFβR Ⅱ and Smad4 mRNA in the lung tissues were detected by RT-PCR. Results The results of histo-pathological examination showed that in SiO2 group, lung tissues were injured obviously; the alveolar inflammation with alveolus interval edema and inflammation cell infiltration appeared on the 3rd and 7th days; the alveolus interval became thicker, became thicker, fibroblast and collagen matiix increased markedly on 14th day; the alveolar structure was damaged, alveolar wall thickened obviously,collagen aggradation and pulmonary fibrosis displayed on 28th day. The alveolar inflammation and pulmonary fibrosis in SiO2 plus Sch-B group were significantly less than those in SiO2 group. The expressions levels of TGF-β1、TGFβR Ⅱ and Smad4 mRNA (TGF-β1: 1.03±0.31 、1.33±0.39、1.08±0.26、0.82±0.16,TGF-βR Ⅱ:0.65 ±0.11、0.80 ±0.16、0.83 ±0.24、0.62 ±0.15, Smad4: 0.87 ±0. 15、0.68 ±0.11、0.78 ±0.19、0.30 ±0.08) in SiO2group were significantly higher than those in the control group (TGF-β1:0.59±0.22、0.55 ±0.25、0.56±0.20、0.55 ±0.12,TGR-βR Ⅱ:0.28 ±0.13、0.31 ±0. 15、0.34 ±0.15、0.27 ±0.09,Smad4:0.23 ±0.11、0.40 ±0. 12、0.39 ±0.12、0.18±0.06)(P＜0.01 or P＜0.05), but the expression level of TGF-β1 mRNA was the highest on the 7th day. The expression levels of TGF-β1 and Smad4 mRNA (TGF-β1: 0.68 ±0.28、0.88 ±0.25、0.75 ±0.11、0.61 ±0. 14,Smad4:0.25 ±0.12、0.45 ±0.09、0.44 ±0.07、0.21 ±0.04) in SiO2 plus Sch-B group were significantly lower than those in SiO2 group (P＜0.01 or P＜0.05),but there were no significant differences of the TGFβR Ⅱ mRNA expression levels between SiO2 group and SiO2 plus Sch-B group. Conclusion Sch-B can reduce the pulmonary fibrosis induced by SiO2 through inhibition of the mRNA express of TGF-β1 and Smad4 in the lung tissue, modulating the TGF-β1/Smad4 signal transduction pathway and inhibiting the target gene activation.     

膝关节注射透明质酸钠对力竭性跑台运动大鼠滑膜组织COMP的影响

Objective To investigate the effects of intra-articular hyaluronan(HA)injection on the expression of cartilage oligomeric matrix protein(COMP)in synovium of strenuous running rats,and investigate the possibility of predicting the effectiveness of HA based on COMP in synovium.Methods 36 healthy male Wistar rats were randomly divided into control group,strenuous running group and strenuous running group and HA injection group.Strenuous running group and HA injection group were intra- articularly injected with HA once a week for 5 consecutive weeks.The histological changes of synovium of knee joint was examined by H.E.staining and immunohistochemical expression of COMP in three groups after 6 weeks' strenuous running.Results Synovial inflammation was less severe in strenuous running and HA injection group than strenuous running group(t =7.15,P ＜0.01).The immunohistochemical expression of COMP in rats'synovium of knee joint in strenuous running and HA injection group was significantly lower than that in rats'synovium in strenuous running group(t = 6.30,P ＜ 0.01).Conclusions Intra- articular HA injection suppressed synovitis,and the expression of COMP in synovium could be used to predict the effectiveness of HA.     

PPAR-γ在COPD所致的肺动脉高压患者中的表达变化

Objective To investigate the relationship among peroxisome proliferators - activated receptor gamma (PPAR-γ), pul-monary arterial systolic pressure(PASP) ,and insulin resistance in Chronic Obstructive Pulmonary Disease (COPD) patients. Methods A-mong 63 COPD patients, 30 patients with level of PASP above 40mmHg were enrolled in PAH group and other 33 patients were enrolled in COPD group. Twenty healthy medical examination subjects were enrolled in control group. The expression of PPAR-γ, mRNA was detected by real time fluorescent quantitative RT- PCR. Radioimmunoassay was used to measure the level of fasting plasma insulin (FIN). Fasting plas-ma glucose (FPG) was detected by glucose oxidase method. Results The expression of PPAR-γ mRNA was significantly decreased in PAH and COPD group, while FPG, FIN and IRI increased significantly. PAH group had more increased PASP, decreased expression of PPAR-γ and higher IRI than COPD group. Expression of PPAR-γ was negatively related to PASP and IRI. Conclusions The significantly down reg-ulated expression of PPAR-γ maybe explain the higher FPG and PASP.     

地塞米松预处理对大鼠光气吸入性肺损伤基质金属蛋白酶-9表达的影响

Objective To investigate the effects of dexamethasone on expression of matrix metalloproteinase-9 (MMP-9) in rats with acute lung injury induced by phosgene. Methods The rats were randomly divided into 3 groups: normal control group that consists of the rats with air exposure, phosgene group that consists of the rats with phosgene exposure and dexamethasone group that consists of the rats with phosgene exposure after 2.5 mg/kg dexamethasone being injected. Wet and dry ratio of the lung (W/D) was calculated, and leukocyte count and total protein content of bronchoalveolar lavage fluid (BALF) were recorded at 2 h after exposure. The concentrations of MMP-9 in the serum and BALF were measured by enzyme-linked immunosorbent assay. The pathologic changes of lung tissues were observed under light microscopy. The immunohistochemistry and the RT-PCR were used to detect the contents of MMP-9 in the lung tissue. Results Compared with phosgene group, the lung W/D, protein content and WBC count in of BALF dexamethasone group was significantly decreased (P＜0.01). MMP-9 levels of the serum and BALF in dexamethasone group were (4.799±0.043) μg/L and (15.052±0.029) μg/L, respectively, which were significantly lower than those [(9.439±0.100) and (20.640±0.446) μg/L] in phosgene group (P＜0.01). Compared with phosgene group (2.789±0.282), the expression level(1.183±0.260) of lung M MP-9 mRNA in dexamethasone group was significantly lower than that in phosgene group (P＜0.01).Histological experimental results showed the marked hyperemia and thickening of alveolar wallsand stroma cells infiltrating and more visible alveolar structure damage of alveolar walls in phosgene group while the alveolar structure and the alveolar walls were clear and slightly thickened with inflammatory cells in dexamethasone group. Immunohistochemical results showed that MMP-9 protein expression levels of lung and brochus tissues in normal control group and dexamethasone group were weakly positive, which in phosgene group were strongly positive. Conclusion Dexamethasone has a beneficial effects on acute lung injury induced by phosgene in rats due to the inhibiting MMP-9.     

慢性乙型肝炎肝组织损伤的相关因素研究

Objective To study the expression of adiponectin and α-smooth muscle actin (α-SMA) in liver from the patients of chronic hepatitis B(CHB) overlapped non-alcoholic fatty liver disease( NAFLD), and to explore the mechanism of CHB patients with NAFLD. Methods 94 patients of CHB overlapped NAFLD (case group)underwent liver biopsy, 119 cases of patients with CHB alone (control group) as control, the fasting venous blood sample was taken for liver biochemical and virological indicators. Liver biopsy specimens were immunohistochemically stained for histology, adiponectin and α-SMA, and integral absorbance. Results The serum ALT, total cholesterol, triglyceride, low density lipoprotein cholesterol and fasting glucose levels in case group were significantly higher than that in control group (Z = 3.425,4.488,4.858、2.265, P < 0.05) .There was no significant difference in HBV DNA viral load and HBeAg between the two groups( Z = 0.825, χ2 = 0.323, P > 0.05). In case group, adiponectin expression was no significant correlation with steatosis, inflammation and fibrosis(r = 0.032, -0.107, -0.133, P>0.05); however, in control group adiponectin was negatively related to inflammation and fibrosis(r= -0.223, -0.259,P<0.05). In case group,α-SMA expression was significant correlation with inflammation and fibrosis( r = 0.323,0.355, P < 0.05). In control group, its expression was no correlation with inflammation and fibrosis( r = 0.172,0.155, P > 0.05). Conclusions The occurrence of NAFLD is mainly related to metabolic factors and no relation with viral factors. Adiponectin is not directly related to liver injury of patients of CHB overlapped NAFLD. α-SMA may be important indicator of liver injury,and NAFLD may promote the progress of liver injury in patients with CHB.     

利尿剂在三聚氰胺及三聚氰酸致大鼠急性肾损伤中的治疗作用

Objective To investigate the effect of diuretic (furosemide) therapy on kidney injury induced by melamine and cyanuric acid in rats. Methods 36 male Spragne Dawley rats were random disided into 3 groups. Group A was treated with 2mL of water daily, group B was treated with melamine and cyanuric acid ( each 100 mg/kg) daily for 4 days and then 2ml of water daily, group C was treated with the same as group B at the first 4 days and then treatment with furosemide (20mg/kg) daily. Samples of blood and 24h urine were collected to detective biochemical indexes, and kidney sections were performed on days 4 and 11 ( each end point, n = 6). The kidneys were observed with histopathology and renal crystal deposition scores were determined. Results On the 4th day, group B and group C were resulted in acute kidney injury such as oliguria [ ( 3. 39 ± 1.02 ) ml, ( 3. 20 ± 0. 86 ) ml ] and high serum creatinine [ ( 153.54 ±27. 08)μmol/L, (160. 11 ± 19. 55)μmol/L] and renal melamine cyanurate crystal were found in the renal tissues. On the 11th day, the renal crystal deposition score in the rats was reduced by 9. 52% ( P >0. 05). Compared with those of the 4th day in group B, it reduced by 63.63%( P <0.05) in group C. Urine volume were increased significantly compared with those of the 4th day( P < 0. 05 ) in group C [ from (3.20±0. 86)ml to (25.96 ±5.97)ml] and group B [ from(3. 39 ± 1.02)ml to (8. 57 ± 1.66)ml] , and Urine volume in group C was increased significantly more than that in group B ( P < 0. 05 ). The serum creatinine was obviously reduced as compared with those of the 4th day in group B and C( P <0.05), from[ (153. 54±27.08) μmol/L] to [ ( 106. 10 ±5.53) μmol/L] in group B and from [ ( 160. 11 ± 19. 55) μmol/L] to [ (67. 17 ± 12. 80 ) μmol/L] in group C, but the serum creatinine in group B was still higher than that in group A and C ( P < 0. 05). Conclusions Furosemide can attenuate the damage of acute kidney injury induced by melamine and cyanuric acid.     

冷冻保存对人类卵母细胞线粒体 DNA 缺失和能量代谢的影响

Objective： To explore the effect of cryopreservation on the mitochondrial DNA （mtDNA） deletions and energy metabolism of human oocyte, so as to investigate the effect of cryopreservation on oocytes preservation. Methods： The dumped oocytes with 0PN, 2PN and 3PN during routine IVF were collected for this cryopreservation study. Those oocytes were randomly divided into two groups, one for vitrification cryopreservation （Group A） and the other as control （Group B, without cryopreservation）. The nested polymerase chain reaction （PCR） was used to detect the mtDNA deletions of oocyte mtDNA before and after cryopreservation. Real-time quantitative PCR was adopted to determine the copy number of oocyte mtDNA. ATP contents were detected using luciferin-luciferase assays. Results： There were not significant differences in the mutation frequency of oocyte mtDNA deletions and the copy number of mtDNA between two groups （P>0.05）. However, The ATP content in the group A was significantly lower than that in the group B. Conclusions： The effect of cryopreservation on the oocyte mtDNA deletions and the copy number of mtDNA was limited, suggesting that cryopreservation can be properly used to preserve oocyte. [ABSTRACT FROM AUTHOR]     

EGFL7基因沉默对裸鼠胃癌血管生成的影响

Objective To investigate the effect of short hairpin RNA (shRNA) targeting at epidermal growth factor-1 ike domain 7 ( EGFL7 ) gene on angiogenesis of stomach carcinoma and its mechanism in nude mice.Methods shRNA targeting at EGFL7 gene was constructed and transfected into SGC-7901 cells (pshEGFL7 group), meanwhile, the cells transfected with vector plasmids were used as control group.Positive clones were selected and the transplanted tumor animal models were constructed in nude mice, and the growth and volume of tumors were observed.After 8 weeks, EGFL7 mRNA and protein in transplanted tumor tissues were detected.Moreover, Anti-CD34, VEGF and TSP1 were stained by the immuno- chemistry method, and MMP-2 and TIMP2 mRNA were detected by RT-PCR.Results EGFL7 mRNA was significantly down regulated in pshEGFL7 group.In psh EGFL7 group, the tumor volume was 1.86 ± 0.65 cm3,MVD was 20.84 ± 6.38, while in control group, the tumor volume was 4.86 ± 1.15 cm3, MVD was 39.48±9.01.In EGFL7 group, TSP1 protein presented positive, and VEGF protein presented weakly positive or negative.The expression of MMP-2 mRNA decreased, TIMP2 mRNA increased in pshEGFL7 group, and it was significantly different compared with control group( P ＜0.01 ).Conclusion RNA interference targeting at EGFL7 gene can balance TSP1/VEGF, through regulating the expression of MMP-2/TIMP2 to impair angiogenesis of stomach cancer in nude mice.     

EGFL7基因沉默对裸鼠胃癌血管生成的影响

Objective To investigate the effect of short hairpin RNA (shRNA) targeting at epidermal growth factor-1 ike domain 7 ( EGFL7 ) gene on angiogenesis of stomach carcinoma and its mechanism in nude mice.Methods shRNA targeting at EGFL7 gene was constructed and transfected into SGC-7901 cells (pshEGFL7 group), meanwhile, the cells transfected with vector plasmids were used as control group.Positive clones were selected and the transplanted tumor animal models were constructed in nude mice, and the growth and volume of tumors were observed.After 8 weeks, EGFL7 mRNA and protein in transplanted tumor tissues were detected.Moreover, Anti-CD34, VEGF and TSP1 were stained by the immuno- chemistry method, and MMP-2 and TIMP2 mRNA were detected by RT-PCR.Results EGFL7 mRNA was significantly down regulated in pshEGFL7 group.In psh EGFL7 group, the tumor volume was 1.86 ± 0.65 cm3,MVD was 20.84 ± 6.38, while in control group, the tumor volume was 4.86 ± 1.15 cm3, MVD was 39.48±9.01.In EGFL7 group, TSP1 protein presented positive, and VEGF protein presented weakly positive or negative.The expression of MMP-2 mRNA decreased, TIMP2 mRNA increased in pshEGFL7 group, and it was significantly different compared with control group( P ＜0.01 ).Conclusion RNA interference targeting at EGFL7 gene can balance TSP1/VEGF, through regulating the expression of MMP-2/TIMP2 to impair angiogenesis of stomach cancer in nude mice.     

Effects of silicotic alveolar macrophages exposed to SiO2 on the expression of type Ⅲ collagen and type Ⅲ procollagen in human lung fibroblasts

Objective To study the effects of supernatant of alveolar macrophages (AM) exposed to SiO2 on the expression of type Ⅲ collagen and type Ⅲ procollagen in human lung fibroblasts (HELF) and the intervention effects of anti-TGF-β1 antibody Methods AMs collected from a silicotic by bronchoalveolar lavage were divided into 2 parts, one part was exposed to SiO2 and other part served as control. The supernatant was obtained from AMs cultured for 18 h. HELF were divided into (1) exposure group, which was added with supernatant from AMs exposed to SiO2; (2) control group, which was added with the supernatant from AMs not exposed to SiO2; (3) blank control group, which was added with DMEM; (4) exposure group plus anti-TGF-β1antibody (10μg/ml); (5) control group plus anti-TGF-β1 antibody (10 μg/ml). (1)-(3) groups were cultured for 6, 12, 18, 24, 36, 48h, respectively. (4)-(5) groups were cultured for 18, 24, 36, respectively.Immunocytochemical test and Western blot assay were used to detect pC Ⅲ expression levels in HELF and C Ⅲ expression levels in the supernatant of HELF culture, respectively. Results The pC Ⅲ expression levels of exposure group were 0.1423 ±0.0107,0.1624±0.0011,0.1925 ±0.0050,0.2421 ±0.0097 and 0.2103 ±0.0103,respectively, which were significantly higher than those (0.1212±0.0079、0.1414±0.0058、0.1620±0.0081、0.1965±0.0103 、0.1715±0.0116) of control group (P＜0.05 or P＜0.01). The C Ⅲ levels of exposure group were (0.2559±0.0061、0.3249±0.0110、0.4171±0.0193、0.5441 ±0.0452、0.4751±0.0252), respectively, which were significantly higher than control group (0.2296±0.0121、0.2778±0.0116、0.3367±0.0269、0.3722±0.0214). The pC Ⅲ and C Ⅲ expression levels of exposure plus anti-TGF-β1 antibody group were significantly lower than those of control plus anti-TGF-β1 antibody group (P＜0.05 or P＜0.01).Conclusion AMs exposed to SiO2 can induce the elevated pC Ⅲ and C Ⅲ expression levels in HELF by TGF-β 1 to some extent.     

兴奋性氨基酸递质系统在乐果诱导星形胶质细胞活化中的作用

Objective To study the involvement of excitatory amino acid system in astrocytes activation caused by dimethoate. Methods Pure-cultured astrocytes were gained by three passages from primary cultured rat nerve cells, then treated with 10-6,10-5,10-4 mol/L dimethoate for 48 h, 50 μmol/L and 100μmol/L MK801, a NMDA receptor blocker, was used to intervene the effects induced by 10-4 mol/L dimethoate.HPLC-FLD was utilized to measure the concentrations of excitatory amino acid (EAA), RT-PCR was used to detect the expression levels of NR2B, GLT-1, GLAST, GFAP and S100β mRNA, and immunofluresence staining method was applied to measure the expression levels of GFAP and S100β proteins. Results The expression levels of GLAST mRNA in all exposure groups were 67.8% ,68.6% and 76.2% of control level,respectively, which were significantly lower than that of control group (P＜0.05); The concentrations of EAA significantly decreased in 10-4 mol/L dimethoate group, as compared with control group (P＜0.01); the expression levels of GFAP mRNA in 10-4 mol/L dimethoate group, of S100β mRNA in 10-5 mol/L dimethoate group, of GFAP protein in 10-4 mol/L and 10-5 mol/L dimethoate groups and S100β protein in 10-4 mol/L dimethoate group were significantly higher than those in control group (P＜0.01). The expression levels of GLT-1 and GLAST mRNA in 10-4 mol/L dimethoate plus 50 μ mol/L or 100 μ mol/L MK801 groups increased significantly, as compared with 10-4 mol/L dimethoate group (P＜0.01), the expression levels of NR2B mRNA in 10-4 mol/L dimethoate plus 50 μ mol/L or 100 μmol/L MK801 groups increased significantly, as compared with control group (P＜0.05 or P＜0.01); the concentration of Glu in 10-4 mol/L dimethoate plus 100 μ mol/L MK801 group increased significantly, as compared with 10-4 mol/L dimethoate group (P＜0.01); the expression levels of GFAP mRNA and protein in10-4 mol/L dimethoate plus 50 μ mol/L or 100 μ mol/L MK801 groups decreased significantly (P＜0.01); S100β protein expression level in 50 μ mol/L MK801 intervention group was significantly higher than thatl in control group (P＜0.01). Conclusion Excitatory amino acid system involved in astrocytes activation caused by dimethoate. MK801 was useful to control astrocytes gliosis.     

中药内服外敷对慢性骨髓炎新生血管的调控机制的探讨

Objective To observe the effect of traditional Chinese medicine internal and external treatment on chronic osteomyelitis.Method Chronic osteomyelitis experimental animal models were set up with debridement, then it was random divided into two groups ( antibiotics group for the control group, antibiotics and traditional Chinese medicine group for the observation group).After treatment for 10 days, new capillaries in the tissues surrounding sinus crossings were detected by pathological observation and VEGF expression was determined by ELISA.Result VEGF expression and vascular points of tissues surrounding sinus crossings of antibiotics with traditional Chinese medicine group were obviously higher than that of antibiotics group[ (47.48 ±3.22) μg/ml vs (28.26 ±2.61)μg/ml, P ＜0.01;8.03 ±1.73 vs5.17 ±2.89, P＜0.05 ].Conclusion Traditional Chinese medicine internal and external treatment can improve VEGF expression and increase capillary number inside tissues surrounding sinus.crossings , thus it can promote the healing of chronic osteomyelitis.     

中药内服外敷对慢性骨髓炎新生血管的调控机制的探讨

Objective To observe the effect of traditional Chinese medicine internal and external treatment on chronic osteomyelitis.Method Chronic osteomyelitis experimental animal models were set up with debridement, then it was random divided into two groups ( antibiotics group for the control group, antibiotics and traditional Chinese medicine group for the observation group).After treatment for 10 days, new capillaries in the tissues surrounding sinus crossings were detected by pathological observation and VEGF expression was determined by ELISA.Result VEGF expression and vascular points of tissues surrounding sinus crossings of antibiotics with traditional Chinese medicine group were obviously higher than that of antibiotics group[ (47.48 ±3.22) μg/ml vs (28.26 ±2.61)μg/ml, P ＜0.01;8.03 ±1.73 vs5.17 ±2.89, P＜0.05 ].Conclusion Traditional Chinese medicine internal and external treatment can improve VEGF expression and increase capillary number inside tissues surrounding sinus.crossings , thus it can promote the healing of chronic osteomyelitis.