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| 1 | 地龙降压胶囊对自发性高血压大鼠 RAAS 系统调控机制的研究显示文摘目的:探讨地龙降压胶囊对自发性高血压大鼠(SHR)血压的影响机制。方法:将40只SHR随机分为5组,包括模型对照组、地龙降压胶囊0.126 g/kg、0.252 g/kg、0.504 g/kg组、贝那普利0.9 mg/kg组;取8 w龄雄性魏-凯二氏大鼠(WKY)8只作为空白对照组,连续灌胃给予相应药物或生理盐水9 w。每周测大鼠血压,并于给药结束后采血检测血清肾素(Renin)、血管紧张素Ⅱ(Angiotensin II, AngⅡ)、醛固酮(Aldosterone, Ald)水平变化情况;分离胸主动脉,逆转录聚合酶链反应(RT-PCR)检测血管紧张素Ⅱ1型受体(AT1R)mRNA的表达,蛋白印迹法测定转化生长因子-β1(TGF-β1)、血管内皮生长因子(VEGF)蛋白表达。结果:与空白对照组相比,模型对照组收缩压、舒张压明显升高,而且随着观测时间增加血压升高更加明显;同时模型对照组动物血清中Renin活性、AngⅡ、Ald水平及AT1R mRNA、TGF-β1、VEGF蛋白表达均明显升高(P<0.05)。与模型对照组相比,地龙降压胶囊0.252、0.504 g/kg组、贝那普利0.9 mg/kg组在给药干预后收缩压分别在第3 w、第3 w、第1 w出现明显下降;同时地龙降压胶囊0.252、0.504 g/kg组、贝那普利0.9 mg/kg组动物血清中Renin、AngⅡ、Ald水平及AT1R mRNA、TGF-β1、VEGF蛋白表达均明显降低(P<0.05)。结论:地龙降压胶囊可能通过抑制RAAS系统过度激活及TGF-β1、VEGF等蛋白的表达从而产生明显的降压作用。 | 赵信科 刘斌 蒋虎刚 刘萍萍 马承旭 刘凯 李应东 | 2020 | 中药药理与临床2020，36，2： | 12 |
| 2 | Prophylaxis with intraocular pressure lowering medication and glaucomatous progression in patients receiving intravitreal anti-VEGF therapy显示文摘AIM: To investigate whether pretreatment with pressurelowering medication prior to anti-vascular endothelial factor(VEGF) injections had an effect on glaucomatous progression in patients with preexisting glaucoma or ocular hypertension(OHT).METHODS: A total of 66 eyes from 54 patients with a preexisting diagnosis of glaucoma or OHT, treated with six or more anti-VEGF injections were selected for chart review. Primary outcome measures were rate of visual field loss in d B/year, rate of change in retinal nerve fiber layer(RNFL) thickness in microns/year, and need for additional glaucoma intervention.RESULTS: The number of eyes requiring additional glaucoma medication was 5 of 20(25.0%) and 14 of 46(30.4%) for the pretreated and non-pretreated groups, respectively. The number of eyes requiring glaucoma laser or surgery was 4 of 20(20.0%) and 13 of 46(28.3%) for the pretreated and non-pretreated groups, respectively. Estimated mean rate of pattern standard deviation decline was not significant in either group(P>0.073), with no difference between groups(P=0.332). Although both groups showed significant RNFL change from baseline(P<0.011), no difference was detected between groups(P=0.467).CONCLUSION: Pretreatment has no detectable effect on structural or functional glaucomatous progression. Patients receiving repeated injections may be at risk for glaucomatous complications requiring invasive intervention. | Jeanette Du James T Patrie Xiao-Yu Cai Bruce E Prum Yevgeniy Shildkrot | 2022 | International Journal of Ophthalmology(English edition)2022，15，10： | 0 |
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