软肝冲剂对四氯化碳致小鼠肝损伤的保护作用

目的观察软肝冲剂对四氯化碳(CCl4)诱导的小鼠肝纤维化模型的保护作用。方法将60只C57B/L小鼠随机分为空白对照组、模型组、秋水仙碱对照组、软肝冲剂低剂量组和软肝冲剂高剂量组,每组12只。空白对照组腹腔注射100%花生油1 ml/kg,每周2次,共10周;其余各组均给予腹腔注射含20%CCl4的花生油1 ml/kg,每周2次,共10周造模;第3周起秋水仙碱对照组予秋水仙碱0.1 mg/(kg·d)灌胃,软肝冲剂低、高剂量组分别予软肝冲剂1 g/(kg·d)、5 g/(kg·d)灌胃。在第10周通过摘除眼球取血,检测小鼠血清中透明质酸(HA)、层粘连蛋白(LN)、三型前胶原(PCⅢ)、四型胶原(Ⅳ-C)、丙氨酸转氨酶(ALT)、天门冬氨酸转氨酶(AST)含量,检测肝脏组织中超氧化物歧化酶(SOD)和丙二醛(MDA)的含量,计算肝脏指数,观察小鼠肝脏的HE染色病理组织学改变。结果模型组小鼠血清中HA、LN、PCⅢ、Ⅳ-C、ALT和AST含量分别为(480.11±62.12)μg/L、(411.65±30.63)μg/L、(454.12±41.81)μg/L、(311.15±31.61)μg/L、(140.4±9.8)U/L和(198.2±9.7)U/L,均明显高于其它各组(P0.05);肝脏组织中SOD[(122.53±7.68)U/mg]低于空白对照组(P0.05);MDA[(5.59±0.33)nmol/mg]高于空白对照组(P0.05);肝脏指数[(4.7±1.5)%]高于空白对照组(P0.05)。病理切片显示肝细胞坏死并出现脂肪空泡、纤维组织增生和炎细胞浸润。软肝冲剂低剂量组与秋水仙碱组治疗效果相似。软肝冲剂高剂量组效果较好,小鼠血清中HA、LN、PCⅢ、Ⅳ-C、ALT和AST含量分别为(143.21±21.53)μg/L、(139.11±35.23)μg/L、(134.45±24.77)μg/L、(119.32±29.34)μg/L、(45.4±6.3)U/L和(53.6±7.1)U/L,均明显低于模型组(P0.05);肝脏组织中SOD[(189.5±7.5)U/mg]高于模型组(P0.05),MDA[(2.45±0.33)nmol/mg]低于模型组(P0.05);肝脏指数[(3.4±0.4)%]低于模型组(P0.05);病理检查显示肝脏组织中无炎性浸润、脂肪空泡和无纤维组织沉积。结论软肝冲剂可以改善肝脏功能,保护肝细胞和抑制肝纤维化,减轻CCl4诱导小鼠肝纤维化程度。     

没食子酸抗实验性肝纤维化作用机制

目的探讨中药单体没食子酸对四氯化碳(CCl4)诱导的大鼠肝纤维化影响及其机制。方法采用CCl4制备大鼠肝纤维化模型,观察没食子酸对大鼠肝功能、超氧化物歧化酶(SOD)、丙二醛(MDA)、L-羟脯氨酸(Hyp)、血清透明质酸(HA)、层粘连蛋白(LN)、III型前胶原(HPCIII)含量影响,观察肝脏显微结构变化。结果与对照组比较,模型组大鼠血清中谷丙转氨酶(ALT)[(342.07±28.03)U/L]、谷草转氨酶(AST)[(532.88±115.55)U/L]、M DA含量[(35.07±11.43)nmol/m L]升高,SOD活力[(147.18±32.27)U/m L]下降,血清中Hyp、HA、LN及HPCIII含量[分别为(49.23±10.87)μg/m L、(161.82±35.24)ng/m L、(46.90±24.52)ng/L、(8.47±1.10)ng/m L]明显升高(P0.01);与模型组比较,高剂量没食子酸组大鼠血清中ALT、AST活力[分别为(280.63±119.50)、(229.82±51.22)U/L]明显下降,MDA含量[(10.32±3.88)nmol/m L]下降、SOD活力[(230.30±17.56)U/m L]升高,血清中Hyp、HA、LN及HPCIII含量[分别为(26.83±8.23)μg/m L、(103.26±7.16)ng/m L、(11.74±3.69)ng/L、(6.00±0.53)ng/m L]明显下降(P0.05);病理切片结果表明,没食子酸对CCl4所致大鼠肝纤维化有明显改善作用。结论没食子酸具有明显的保肝、抗肝纤维化作用,其机制可能与其提高机体抗氧化能力有关。     

虾青素对四氯化碳致小鼠急性肝损伤保护作用

目的 研究虾青素对四氯化碳(CCl4)所致小鼠急性化学肝损伤的保护作用.方法 雄性昆明种小鼠60只,随机分为正常对照组、急性化学性肝损伤模型组、联苯双酯(15 mg/kg)阳性对照组以及虾青素10,15,20mg/kg剂量组,共6组.测定各组小鼠肝脏系数、血清中丙氨酸氨基转移酶(ALT)、天门冬氨酸氨基转移酶(AST)、超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性与丙二醛(MDA)含量;测定肝组织中SOD、GSH-Px活性、MDA含量以及组织病理系数.结果 虾青素3个剂量组小鼠血清SOD由低到高依次为(110.18±14.28),(138.09±17.81),(170.19±20.20)U/(mg pro);肝组织SOD由低到高依次为(141.52±28.29),(172.20±29.24),(200.12±33.42)U/(mg pro);与模型组血清(74.52±14.40)U/(mg pro)、肝组织(102.29±34.29)U/(mg pro)比较均明显升高(P<0.01).虾青素3个剂量组小鼠血清GSH-Px活性由低到高次为(63.30±11.01),(72.40±10.77),(90.17±11.29)U/(mg pro);肝组织GSH-Px活性由低到高依次为(112.29±25.41),(142.96±24.13),(170.38±26.34)U/(mg pro);与模型组血清(60.13±10.28)U/(mg pro)、肝组织(110.69±24.26)U/(mg pro)比较均明显升高(P<0.01).虾青素3个剂量组小鼠血清ALT由低到高依次为(99.29±5.27),(83.50±5.12),(68.12±5.12)U/L;血清AST活性由低到高依次为(80.49±4.28),(64.20±4.10),(52.21±4.42)U/L,与模型组血清ALT(108.02±15.06)U/L、血清AST活性(97.28±12.28)U/L比较明显降低;血清与肝组织MDA含量明显降低,差异均有统计学意义(P<0.01),并能不同程度地改善肝脏病理组织损伤.结论 虾青素对CCl4所致急性化学性肝损伤具有预防性保护作用.     

火棘多糖对CCl_4所致大鼠肝损伤保护作用

目的探讨火棘多糖对四氯化碳(CCI_4)所致大鼠肝损伤的保护作用。方法将50只Wistar大鼠随机分为5组:对照组,CCI_4模型组,联苯双酯(BP)组,火棘多糖200、400 mg/kg组。对照组大鼠中腹膜下注射橄榄油,其余各组大鼠腹膜下注射30%CCI_4,联苯双酯组、火棘多糖组分别灌胃BP 200 mg/kg,火棘多糖200、400 mg/kg。5周后,测定血清中丙氨酸转氨酶(ALT)及天冬氨酸转氨酶(AST)含量;检测肝组织中丙二醛、谷胱甘肽过氧化物酶(GSH-Px)含量及总抗氧化能力(T-AOC)活性;用real time PCR检测大鼠肝组织中核因子相关因子2(Nrf2)及过氧化氢酶(CAT)mRNA表达变化。结果与CCI_4模型组大鼠血清ALT、AST含量[(521.42±68.21)、(589.17±39.44)U/L]比较,火棘多糖200、400 mg/kg组大鼠血清ALT、AST含量[分别为(221.13±28.46)、(190.31±27.32)与(286.4±31.57)、(224.6±30.52)U/L]明显降低,差异有统计学意义(P0.05);与CCI_4模型组大鼠肝组织中丙二醛含量[(32.14±3.26)nmol/mg pro]比较,火棘多糖200、400 mg/kg组大鼠肝组织中丙二醛含量[分别为(23.29±4.38)、(18.67±3.28)nmol/mg pro]明显降低,差异有统计学意义(P0.05);与CCI_4模型组大鼠肝组织中T-AOC活性[(73.15±9.23)U/m L]比较,火棘多糖200、400 mg/kg组大鼠肝组织中T-AOC活性[分别为(106.32±14.23)、(152.31±16.12)U/m L]明显升高,差异有统计学意义(P0.05);real time PCR结果显示,与CCI_4模型组比较,火棘多糖组大鼠肝组织中Nrf2及CAT mRNA表达水平增加。结论火棘多糖对CCI_4所致大鼠肝损伤具有保护作用,其机制可能与火棘多糖可提高大鼠抗氧化能力有关。     

山药水提物对化学性肝损伤的保护作用

[目的]研究山药水提物(Aqueous extract of Dioscorea batatas,DA)对四氯化碳诱导肝损伤的肝功能的保护作用.[方法]建立CCl4诱导肝损伤的小鼠模型,测定正常对照组、造模组、阳性对照组、山药水提物100 mg/kg、200 mg/kg、400 mg/kg、800 mg/kg共7个组的血清丙氨酸转氨酶(ALT)、天门冬氨酸转氨酶(AST)和肝组织中超氧化物歧化酶(SOD)、丙二醛(MDA)、肿瘤坏死因子α(TNF-α)、白介素1β(IL-1β)及组织蛋白含量.肝组织常规HE染色观察.[结果]与模型组比较,经山药水提物干预后,血清ALT、AST活性和肝组织中MDA、TNFα、IL-1β含量明显降低(P<0.05),肝组织中SOD活性升高(P<0.05),组织蛋白含量差异无统计学意义(P>0.05).[结论]山药水提物对四氯化碳造成的化学性肝损伤具有保护作用,并呈现一定的剂量依赖关系.     

番茄汁对镉中毒小鼠肝肾损伤保护作用

目的 探讨番茄汁的促排镉作用及对肝肾损伤的影响.方法 小鼠饲喂CdCl2和番茄汁,4周后处死,测定肝、肾镉含量,血清尿素氮(BUN)及谷丙转氨酶(ALT)的含量,血、肝、肾超氧化物岐化酶(SOD)活性、丙二醛(MDA)含量、谷胱甘肽过氧化物酶(GSH-Px)活力.结果 番茄汁低剂量组肝、肾镉含量为[(12.4±0.52),(9.3±0.37)μg/g]与镉染毒组[(15.6±0.11),(11.2±0.45)μg/g]比较,明显降低(P＜0.01),血ALT、BUN含量[(204.4±15.2),(11.1±2.05)]mmol/L明显低于镉染毒组[(502.5±21.3)、(14.5±3.15)]mmol/L(P＜0.01),血、肝、肾MDA含量分别为[(10.5±1.2),(10.7±2.1),(11.3±1.2)nmol/mgprot],明显低于镉染毒组(P＜0.01),血、肝、肾SOD、GSH-Px的活性明显升高(P＜0.01),呈剂量效应关系.结论 番茄汁对镉中毒小鼠肝、肾损伤具有一定保护作用,其机制可能与增强小鼠抗氧化能力有关.     

丹酚酸对四氯化碳致大鼠肝损伤保护作用

目的 探讨具有特定组成的丹酚酸(SA)对四氯化碳(CCl4)所致大鼠肝损伤的预防性保护作用及其机制.方法 将健康SD成年大鼠随机分为5组,对照组和模型组给予蒸馏水,各实验组分别用3种不同剂量SA灌胃,2周后以花生油(对照组)或CCl4(其余各组)腹腔注射,24 h后测定大鼠血清天门冬氨酸氨基转移酶(AST)及丙氨酸氨基转移酶(ALT)、血清和肝组织丙二醛(MDA)、谷胱甘肽(GSH)含量以及超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性,并观察肝组织病理变化.结果 模型组大鼠血清AST、ALT值分别为615 U/L和243 U/L,而SA组大鼠AST、ALT分别为348～452和134～181 U/L,活性显著下降(P<0.05).与模型组比较,当SA剂量为300 mg/(kg·bw)时,大鼠血清和肝匀浆中的SOD活性分别上升22.7%和16.7%,MDA含量降低19.3%和30.5%,GSH含量升高9.2%和9.1%,差异均有统计学意义(P<0.05).实验组和对照组间GSH-Px活性没有显著变化(P>0.05).模型组大鼠肝脏小叶中心部出现明显点状和灶状坏死,而SA不同剂量组大鼠肝脏病变明显减轻.结论 前期给予适量的SA处理可有效抵抗CCl4所致大鼠急性肝损伤,其保护作用机制可能与提高大鼠机体抗氧化能力有关.     

人参皂苷Rg1对2型糖尿病大鼠肝损伤保护作用

目的 探讨人参皂苷Rg1对2型糖尿病大鼠肝脏损伤的保护作用及其机制.方法 采用高脂饮食和链脲佐菌素结合的方法建立大鼠2型糖尿病模型,实验设对照组、模型组、人参皂苷Rg1(2、4、8 mg/kg)组;血糖仪测定大鼠血糖水平,分光光度法测定大鼠血清谷丙转氨酶(ALT)、谷草转氨酶(AST),超氧化物歧化酶(SOD)、丙二醛含量;苏木素伊红染色观察肝组织形态学变化;酶联免疫吸附法测定血清中肿瘤坏死因子(TNF-α)、白细胞介素-6(IL-6)水平.结果 与对照组比较,模型组大鼠血清中ALT、AST[分别为(123±10.7)、(138±13.8)U/L]、TNF-α、IL-6[分别为(54±2.8)、(168±12.5) pg/mL]和丙二醛[(24.8±2.5)nmol/mgprot]含量均增加,SOD[(65 ±7.9) U/mgprot]活力降低;与模型组比较,8 mg/kg人参皂苷Rg1组大鼠血清中ALT、AST[分别为(58±8.0)、(65 ±8.9)U/L]、TNF-α、IL-6[分别为(34±4.1)、(83±10.4)pg/mL]和丙二醛[(13.8±1.9) nmol/mgprot]含量均降低,SOD[(105 ±9.7)U/mgprot]活力增加.结论 人参皂苷Rg1对2型糖尿病大鼠肝损伤具有一定保护作用,其机制可能与其抗炎抗氧化作用有关.     

双氢青蒿素对肝纤维化小鼠TGF-β1和TNF-α的影响

目的探讨双氢青蒿素(DHA)对四氯化碳诱导的肝纤维化小鼠肝组织中转化生长因子-β1(TGF-β1)和肿瘤坏死因子(TNF-α)的含量的变化。方法实验小鼠随机分成对照组、纤维化组和DHA干预组3组,通过向腹腔注射四氯化碳建立小鼠肝纤维化模型。DHA干预组口服DHA;对照组、纤维化组均口服等剂量的含二甲基亚砜的生理盐水。各组的肝组织切片经苏木素-伊红染色和天狼猩红染色法观察其形态结构变化;生物化学分析法检测各组小鼠血清中丙氨酸转氨酶(ALT)、天冬氨酸转氨酶(AST)的含量。ELISA测定肝组织中TGF-β1和TNF-α的含量。结果观察各组苏木素-伊红染色和天狼猩红染色后肝组织的形态结构表明肝纤维化动物模型的成功建立。纤维化组小鼠肝内肝细胞坏死,汇管区纤维组织和胆总管明显增生,血清中ALT[(142.952 3±23.762 4)U/L]和AST[(177.561 1±15.547 7)U/L]含量增加,肝组织中TGF-β1[(34.121 1±3.091 2)μg/L]和TNF-α[(48.675 3±4.221 3)ng/L]的含量升高,与对照组相比,差异均有统计学意义(均P0.05)。经过DHA治疗后小鼠肝内肝组织坏死减少,肝内纤维组织增生降低,血清中ALT[(87.674 5±16.546 1)U/L]、AST[(127.644 3±21.345 2)U/L]含量减少,肝组织中TGF-β1[(25.901 1±3.567 1)μg/L]和TNF-α[(38.665 1±3.906 5)ng/L]的含量降低,与对照组相比差异均有统计学意义(均P0.05)。结论 DHA可以拮抗小鼠肝纤维化,是通过减少小鼠肝组织中的TGF-β1和TNF-α的含量来发挥作用的。     

富锗灵芝对四氯化碳诱导大鼠肝损伤保护作用

目的探讨富锗灵芝胶囊对四氯化碳(CCI4)所致大鼠肝损伤的保护作用。方法 50只Wistar雄性大鼠,随机分为对照组、模型组、富锗灵芝高、中、低剂量组(分别灌胃给予富锗灵芝胶囊450、230、80 mg/kg),采用CCl4诱导大鼠急性肝损伤;分别测定血清中谷丙转氨酶(ALT)和谷草转氨酶(AST)活性,肝组织经苏木素-伊红染色,光镜下观察肝组织病理状况,并计算肝损伤指数。结果与对照组比较,模型组大鼠ALT、AST活性[分别为(258.00±64.81)、(423.60±139.85)IU/L]明显升高,肝脏病变总评分[(194.50±27.71)分]明显升高(P<0.01);与模型组比较,富锗灵芝中、低剂量组大鼠血清ALT、AST活性[分别为(131.30±98.94)、(264.00±187.02)和(138.50±86.08)、(265.70±140.59)IU/L]明显降低(P<0.01),大鼠肝脏病变总评分[分别为(141.40±48.35)和(134.10±25.89)分]明显降低(P<0.01)。结论富锗灵芝胶囊对CCl4所致大鼠肝损伤具有一定保护作用。     

缬沙坦/氨氯地平和依贝沙坦/双氢克尿噻联合治疗老龄高血压疗效的研究

Objective To compare the clinical effect of valsartan/amlodipine combination or irbesartan/hydrochlorothiazide(HCTZ)combination in very elderly hypertensives.Methods After a 4-week placebo period,94 hypertensives,aged 75-89 years were random given valsartan 160 mg/amlodipine 5 mg or irbesartan 300 mg/HCTZ 12.5 mg for 24 weeks according to a rospective study.After 4 weeks,amlodipine or HCTZ was doubled in non-responders.Patients were checked every 4 weeks.At each visit,sitting,lying and standing blood pressure(BP),systolic BP(SBP)and diastolic BP(DBP)were measured. At the end of placebo period and treatment period,electrolytes and uric acid were evaluated.Results Blood pressure was significantly decreased in both treatment groups,however,there was no statistical significance between two groups.BP changes from lying to standing position were significantly greater in the irbosartan/HCTZ group(-17.2/-9.1 mmHg)than that in the valsartan/amlodipine group(-10.1/-1.9 mmHg,t=2.14,P＜0.05 for SBP and t=3.11,P＜0.01 for DBP vs.irbesartan/HCTZ).Potassium significantly decreased and uric acid significantly increased(-0.4 mmol/L,t = 2.33,P＜ 0.05 and+29.7μ mol/L,t =2.54,P＜0.05 vs.baseline,respectively)only in the irbesartan/HCTZ group.Conclusions Both combinations had similarly effective in reducing clinical BP in very elderly hypertensives.However,valsartan/amlodipine offered some advantage and less pronounced BP orthostatic changes and absence of metabolic adverse effects.     

罗格列酮与全反式维甲酸对人胃癌SGC7901细胞株生长和凋亡的影响

Objective To investigate the influence of PPARγ excitomotor RSG and ATRA on gastric cancer SGC7901 cell line proliferation in vitro and its potential mechanism study.Methods Human gastric cancer SGC7901 cell line was cultured in vitro.Experiment samples were divided to blank group,10μmol/L ATRA group, 12.5μmol/L RSG group, 25μmol/L RSG group, 10μmol/L ATRA + 25μmol/L RSG group.Proliferation inhibitory effect was determined by MTI assay.Flow cytometry was used to detect cell cycle, H.E stain was used to observed micrography alteration.Expression of PPARγ protein in gastric cancer cells were measured by immunohistochemistry.PPARγ mRNA in gastric cancer cells were measured by RT-PCR.Results ATAR at concentration 10μmol/L, RSG at 12.5 μmol/L and RSG at 25 μmol/L could inhibit the proliferation of SGC7901 cells in a dose-and time-dependent, and when both agents were combined for 72h, growth inhibition ratio was (29.73 ± 0.69) %.Flow cytometry analysis revealed a cell cycle arrest at G1 and S phase, and when both agents combined, S% was (12.87 ± 0.35 )%, cell micrography tended to be normal when both agents combined.Up-regulation of PPARγ protein and PPARγ mRNA expressions were also observed, those effects were enhanced when both agents combined, and grey scale ratio was 0.646.Conclusion The ATRA and RSG could significantly induced growth inhibition of human gastric cancer SGC7901 cell, which may be associated with cell cycle arrest and inducing differentiation, activation of PPARγ protein and PPARγ mRNA expression.Synergistic effect could be caused by the combined use of the two agents.     

罗格列酮与全反式维甲酸对人胃癌SGC7901细胞株生长和凋亡的影响

Objective To investigate the influence of PPARγ excitomotor RSG and ATRA on gastric cancer SGC7901 cell line proliferation in vitro and its potential mechanism study.Methods Human gastric cancer SGC7901 cell line was cultured in vitro.Experiment samples were divided to blank group,10μmol/L ATRA group, 12.5μmol/L RSG group, 25μmol/L RSG group, 10μmol/L ATRA + 25μmol/L RSG group.Proliferation inhibitory effect was determined by MTI assay.Flow cytometry was used to detect cell cycle, H.E stain was used to observed micrography alteration.Expression of PPARγ protein in gastric cancer cells were measured by immunohistochemistry.PPARγ mRNA in gastric cancer cells were measured by RT-PCR.Results ATAR at concentration 10μmol/L, RSG at 12.5 μmol/L and RSG at 25 μmol/L could inhibit the proliferation of SGC7901 cells in a dose-and time-dependent, and when both agents were combined for 72h, growth inhibition ratio was (29.73 ± 0.69) %.Flow cytometry analysis revealed a cell cycle arrest at G1 and S phase, and when both agents combined, S% was (12.87 ± 0.35 )%, cell micrography tended to be normal when both agents combined.Up-regulation of PPARγ protein and PPARγ mRNA expressions were also observed, those effects were enhanced when both agents combined, and grey scale ratio was 0.646.Conclusion The ATRA and RSG could significantly induced growth inhibition of human gastric cancer SGC7901 cell, which may be associated with cell cycle arrest and inducing differentiation, activation of PPARγ protein and PPARγ mRNA expression.Synergistic effect could be caused by the combined use of the two agents.     

硝酸甘油对大鼠重症急性胰腺炎ET/NO、TXA2/PGI2的影响

Objective To explore the effect of nitroglycerin on ET/NO, TXA2/PGI2 and pancreas pathomorphology changes in severe acute pancreatitis (SAP) rats. Methods Sixty SD rats were random divided into five groups, including control group (A group, n = 12) and experimental group(B,C,D and E group, n = 12). The SAP was induced by injection of 5% sodium taurocholate through retrograde common biliopancreatic ducts via duodenal papilla with epidural catheter. Group C, D and E were intravenously injected with nitroglycerin 0.5μg/kg/min,1μg/kg/min and 2μg/min in 30 min respectively, and group A and B was injected with Sodium Chloride 0.5ml. The indexes of changed pathomorphology and ET/NO, TXB2/6-keto-PGF1a, were determined at the 6th and 12th hour after operations, respectively. Results The specimen data of the 6th and 12th hour displayed that the indexes of changed pathomorphology, ET, ET/NO, TXB2, and TXB2/6-keto-PGF1a of the group C,D and E degraded respectively, compared to group B(P < 0.05). Conclusion The nitroglycerin could degrade ET, ET/NO,TXA2 and TXA2/PGI2, improve the microcirculation of pancreas, and delay the pathological inflammation change in SAP rats.     

近视眼视网膜神经纤维层厚度与中央角膜厚度相关性研究

Objective To explore the relationship between retinal nerve fiber layer (RNFL) thickness and central corneal thickness (CCT) in myopia eyes.Methods 91 cases (91eyes) were selected from ophthalmological outpatients including 28cases with low myopia ( spherical equivalence [ SE ] ＞ -3.0D), 33 cases with moderate myopia (SE -0.3D ～ -6.0D) and 30 cases with high myopia (SE ＜ -6.0D).All patients received ocular standard examination including intraocular pressure, refraction, slitlamp biomicroscopy and fundus examination.Other ocular diseases except refractive error were excluded.RNFL thickness and CCT were measured by RTVue Fourior-OCT ( Optovue Inc, USA).Refraction diopter was shown as SE.Results The mean RNFL thickness and CCT was ( 108.5 ± 10.1 ) μm, (524.7 ±36.8)μm respectively.These were no significantly different among low, moderate and high myopia ( P ＞ 0.05 ).Temporal RNFL thickness( tl1 ,tu1 ) was significantly positive related with CCT( r =0.281,0.093 of tl1, r= 0.352,0.167 of tu1 respectively in single and multiple variable analysis; P ＜ 0.05 ), nasal ( nl2, nu2)and inferior nasal RNFL thickness( in2,in1 )was significantly positive related with SE( P ＜0.05), inferior temporal RNFL thickness( it2)was significantly negative related with SE( P ＜0.05), and RNFL thickness in other regions were not significant related with CCT and SE ( P ＞ 0.05 ) in single and multiple variable regressive analysis.Conclusion Relationship between RNFL thickness of local paradisc region and CCT in myopia eyes suggested that CCT should be correlative with some sensible structural parameters in glaucomatous neuropathy and might be important in the diagnosis and therapy of glaucoma.     

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.     

异丙酚对大鼠肺缺血/再灌注损伤的保护作用

Objective To study the protective effects of propofol against ischemia/reperfusion injury in rat lung. Methods Rat model of pulmonary ischemia/reperfusion injury was used in this study. Rats were randomly divided into three groups, including sham opera-tion group (group A), iachemia/reperfusion group (group B) and propofol group (group C), 15 rats in each group. The concentration of tumor necrosis factor -α and interleukin-6 in bronchoalveolar lavage fluid (BALF) were measured by enzyme linked immunosorbent assay (ELISA). Then blood gas analysis, lung wet/dry (W/D) weight ratio were detected in each group. Results Propofol could significantly improve PaO2, reduce the W/D value and the contents of TNF-α and IL-6 in BALF. Conclusion Propofol effectively suppressed the pro-duction and release of inflammatory cytokine, therefore it can protect the lung from isehemia/reperfusion injury.     

近视眼视网膜神经纤维层厚度与中央角膜厚度相关性研究

Objective To explore the relationship between retinal nerve fiber layer (RNFL) thickness and central corneal thickness (CCT) in myopia eyes.Methods 91 cases (91eyes) were selected from ophthalmological outpatients including 28cases with low myopia ( spherical equivalence [ SE ] ＞ -3.0D), 33 cases with moderate myopia (SE -0.3D ～ -6.0D) and 30 cases with high myopia (SE ＜ -6.0D).All patients received ocular standard examination including intraocular pressure, refraction, slitlamp biomicroscopy and fundus examination.Other ocular diseases except refractive error were excluded.RNFL thickness and CCT were measured by RTVue Fourior-OCT ( Optovue Inc, USA).Refraction diopter was shown as SE.Results The mean RNFL thickness and CCT was ( 108.5 ± 10.1 ) μm, (524.7 ±36.8)μm respectively.These were no significantly different among low, moderate and high myopia ( P ＞ 0.05 ).Temporal RNFL thickness( tl1 ,tu1 ) was significantly positive related with CCT( r =0.281,0.093 of tl1, r= 0.352,0.167 of tu1 respectively in single and multiple variable analysis; P ＜ 0.05 ), nasal ( nl2, nu2)and inferior nasal RNFL thickness( in2,in1 )was significantly positive related with SE( P ＜0.05), inferior temporal RNFL thickness( it2)was significantly negative related with SE( P ＜0.05), and RNFL thickness in other regions were not significant related with CCT and SE ( P ＞ 0.05 ) in single and multiple variable regressive analysis.Conclusion Relationship between RNFL thickness of local paradisc region and CCT in myopia eyes suggested that CCT should be correlative with some sensible structural parameters in glaucomatous neuropathy and might be important in the diagnosis and therapy of glaucoma.     

传染性单核细胞增多症患儿CD3+CD4-CD8-T细胞与T淋巴细胞亚群变化情况及临床意义

Objective To study on the changes of the DNT cells and T lymphocyte subtype in children with infectious mononucleosis (IM) and its clinical significance.Methods The flow cytometry (FCM) was used to detected the DNT cells and other T lymphocyte subtype in 48 cases of IM.Results The study showed that DNT cells( 9.39 ± 4.89 )% were greatly increased in comparison with normal controls (NC) (4.26 ± 1.68)% ( P ＜0.01 ).CD4 cells(21.45 ±9.87)% were decreased ( P ＜0.01 ) and CD8 cells increased in comparison with NC (32.43 ± 5.07) % ( P ＜ 0.01 ).Conclusion DNT cells and T lymphocyte subtype can be used to evaluate the immune function of children with infectious mononucleosis (IM) and provide guidance for adoptive immunotherapy.     

强直性脊柱炎合并骨质疏松的临床研究

Objective To investigate the incidence of osteoporosis (OP) in patients with ankylosing spondylitis and the relationship between OP and the clinical data. Methods Serum levels of bone alkaline phosphatase (BALP) and tartrate resistant acid phosphatase 5b (TRACP5b) were detected by enzyme linked immunosorbent assay ( ELISA ) in 60 cases with ankylosing spondylitis, and it was compared with normal controls. Bone mineral density (BMD) was measured through dual-energy X-ray absorptiometry ( DXA), including lumbar ( L2 - L4), bilateral femoral neck and greater trochanter. Some clinical data was collected and analyzed at the same time. Results The incidence of OP in AS patients was 35%, and the incidence of OP in the femoral proximal end was higher than that in lumbar. Compared with normal controls[ ( 1.06 ±0. 18 )U/L ], the levels of serum TRACP5b in AS[ (1.31 ± 0. 82 )U/L] patients was significantly higher ( P <0. 05 ). The levels of serum BLAP in OP combined AS group[ ( 21.65 ± 5.41 ) U/L]were significantly lower than non-OP group[ (32. 37 ± 16. 5 ) U/L] ( P <0. 05 ). The disease duration was negatively correlated with the BMD of femoral neck ( P < 0. 01 ). Conclusions There was higher incidence of OP in AS patients, which were related with the abnormality of bone metabolism and the disease duration.Multiple factors participated in the regulation of bone metabolism of AS.