亚低温联合促红细胞生成素治疗对重型颅脑创伤患者脑脊液β-淀粉样蛋白表达的影响

目的 研究亚低温治疗（MHT）联合促红细胞生成素（EPO）治疗对重型颅脑创伤（sTBI）患者脑脊液中β-淀粉样蛋白的影响.方法 将120例sTBI患者按随机数字表法将患者分为对照（常规治疗）组、MHT组、EPO组和MHT＋ EPO组,每组30例.对照组给予常规治疗,MHT组、EPO组、MHT ＋EPO组在对照组治疗的基础上,分别给予MHT（32 ～ 35℃并维持1～7d）、EPO（静脉注射75 ～ 100 IU/kg,每周3次）以及MHT＋ EPO进行相同疗程的治疗,采用酶联免疫吸附试验（ELISA）测定各组患者治疗前和治疗后第1、3、7天脑脊液中β-淀粉样蛋白水平变化,观察治疗前后颅内压、3个月后格拉斯哥昏迷量表（GCS）评分、6个月后格拉斯哥预后量表（GOS）评分以及远期生活质量评估量表（KPS）评分的变化.结果 治疗7d内各组患者均无丢失病例.治疗第1、3、7天后,MHT组、EPO组和MHT＋ EPO组颅内压值及其脑脊液β-淀粉样蛋白水平均明显降低,而MHT＋ EPO组患者颅内压和β-淀粉样蛋白水平较其他3组明显下降（P＜0.01）.3个月后,MHT＋ EPO组GCS评分明显高于其他3组[（11.1±1.4）分比（7.6±1.1）、（9.5±1.4）、（9.5±0.9）分]（P＜0.01）.6个月后,MHT＋ EPO组GOS评分[（4.3±0.7）分比（3.1 ±1.0）、（3.8±1.0）、（3.8±0.8）分]和KPS评分[（76±14）分比（54±11）、（63±16）、（64±13）分]也明显高于对照组、MHT组和EPO组（P＜0.01）.结论 亚低温联合EPO治疗能明显降低sTBI患者脑脊液β-淀粉样蛋白水平,改善患者神经功能及预后.     

Chronic Non-infectious Uveitis in Patients with Juvenile Idiopathic Arthritis

Purpose: To describe clinical findings and analyze treatment evolution of chronic, non-infectious uveitis in patients with juvenile idiopathic arthritis (JIA).

Methods: A total of 82 patients (147 eyes) with JIA-related uveitis treated for ≥2 months were included (78% females; 79% bilateral uveitis; 74% anterior uveitis). Outcome measures were visual acuity (VA), inflammation control, side-effects, and surgical procedures.

Results: Mean ± SD age at diagnosis was 4.9 ± 3.8 years; mean ± SD follow-up time was 8.7 ± 7.8 years. Mean VA did not significantly change throughout the study. Three (2%) eyes resulted in no light perception (NLP) vision. Thirty (37%) patients underwent 69 procedures. In total, 41 (50%) patients achieved inflammation control. TNF-α inhibitors were significantly associated with inflammation control. Seven (8.5%) patients stopped treatment due to side-effects.

Conclusions: JIA is a cause of significant ocular morbidity. TNF-α inhibitor use was associated with inflammation control. Prospective, randomized, double blind clinical trials in this regard are warranted.     

Endoscopic transnasal canaliculorhinostomy for refractory common canalicular obstruction with an unidentifiable lacrimal sac

AIM: To compare the safety and efficacy of conventional versus accelerated (9 mW/cm2) CXL in progressive keratoconus at the 2-year follow-up. METHODS: In this prospective study, consecutive progressive keratoconus patients were randomized to receive either conventional CXL (CCXL) or accelerated CXL (ACXL, using hydroxypropyl methylcellulose-assisted riboflavin imbibition for 10min) at 9 mW/cm2. Visual, refractive, keratometric, topographic, and aberrometric outcomes and stromal demarcation line depth (DLD) measurements were compared at the end of a 2-year follow-up. RESULTS: Thirty-two eyes from 32 patients in the CCXL and 27 eyes from 27 patients in the ACXL groups completed 2-year follow-ups. At 2 years post-CXL, both uncorrected and corrected visual acuities improved significantly in both groups. The improvements in keratometric readings, flattening rate (flattening of the Kmax more than 1D), 3 topographic indices, and vertical coma were significantly better in the CCXL group compared to the ACXL group (P<0.05). The DLD as measured by anterior segment optical coherence tomography or in vivo confocal microscopy was better detectable and significantly deeper in the CCXL group compared to the ACXL group. The deeper DLD was found to be significantly correlated with improvements in the mean keratometry measurements. Progression was noted in 11.1% of eyes in the ACXL group, whereas progression was not observed in any patient eye in the CCXL group. CONCLUSION: In this prospective randomized study, ACXL was less effective in halting the progression of keratoconus at a 2-year follow-up compared to CCXL.     

白花前胡提取物对大脑中动脉梗塞大鼠IL-6及IL-8的影响

目的:研究白花前胡对大脑中动脉梗塞后相关病理生理改变及对脑组织及血清IL-6和IL-8水平的影响.方法:线栓法制备大脑中动脉梗塞大鼠模型,研究白花前胡对大脑中动脉梗塞性大鼠脑缺血后行为障碍及脑梗死范围、缺血组织病理形态的影响及脑组织及血清IL-6和IL-8水平的影响.结果:阻断大脑中动脉(MCA)后,所有动物都出现程度不同的运动障碍,大鼠脑组织和血清IL-6及IL-8水平均显著升高,白花前胡水醇提取液可明显抑制大脑中动脉梗塞大鼠血清中IL-6及IL-8水平;4 mg*ml-1和2 mg*ml-1白花前胡水醇提取液可明显改善大脑中动脉梗塞模型大鼠神经症状分值、降低脑梗死范围.结论:白花前胡水醇提取物能有效抑制级联反应中炎性细胞因子IL-6 及IL-8的产生,减轻或消除脑缺血级联反应中的炎症反应,发挥保护神经元,减少梗死面积的作用.     

EMIT法和FPIA法监测全血环孢素A浓度相关性比较

目的 比较酶放大免疫法(EMIT)与荧光偏振免疫法(FPIA)监测全血中环孢素A(CsA)浓度的测定结果,并进行相关性分析.方法 收集126例/次临床使用环孢素A的患者稳态浓度血样,分别用EMIT法及FPIA法测定,并考察两种方法测定结果的相关程度.结果 2种不同方法测定CsA血药浓度平均值(x±s)分别为EMIT法:(205.77±117.65)ng/mL;FPIA法:(186.49±112.16)ng/mL,以SPSS 19.0对经对数转换后的两组浓度数据进行配对样本T佥验,其P=0.00,即两种测定方法有显著性差异.将患者分为肾移植组(63例/次),肝移植组(17例/次),干细胞移植组(31例/次),肾病综合征组(15例/次).以SPSS19.0对四组浓度数据分别进行组内的配对样本T检验,得到肾移植组与肝移植组P＜0.05,差异具统计学意义.干细胞移植组与肾病综合征组P＞0.05,差异无统计学意义.结论 对CsA进行治疗药物监测时应考虑不同分析方法的影响.     

Xanthone glycosides from Polygala tenuifolia and their conformational analyses

Seven xanthone glycosides were isolated from the cortexes of Polygala tenuifolia, and their structures were identified as polygalaxanthones VIII-XI (1-4), sibiricoxanthone B (5), 7-O-methylmangiferin (6), and lancerin (7), on the basis of spectroscopic analyses. Compounds 1-4 are new xanthone glycosides, and compounds 4 and 5 exist as rotamers. To explain this phenomenon, conformational analyses were performed on compounds 4 and 5 and other compounds with similar skeletons that were isolated from P. tenuifolia.     

51例大学生寸口三部脉图参数研究

目的:探讨三部脉图特征参数之间的差异。方法:以51名健康大学生作为研究对象,使用PDS-1型三部脉诊仪以总按的取脉手法,对受试者双手的寸口三部脉同时施以浮、中、沉三种取脉压力,获取寸、关、尺三部脉图,以时域分析方法提取脉图参数特征。采用多因素方差分析统计方法对数据进行分析。结果:左右手、取脉位置(寸关尺)和取脉压力(浮中沉)对脉图具有影响;左右手与取脉压力具有交互作用,取脉位置与取脉压力具有交互作用,交互作用主要体现在脉图幅值参数h1~h5。结论:健康大学生寸口三部脉图参数之间存在差异;PDS-1型三部脉诊仪能够获取丰富的脉象信息,为脉诊客观化提供依据。