˫�ȷ����ƶ�֬�����յ���������Ĥ����άϸ��IL-1β��TNF-α����Ӱ���о�

目的 探讨双氯芬酸钠对脂多糖（LPS）诱导的人牙周膜成纤维细胞（HPDLFs）白细胞介素-1β（IL-1β）和肿瘤坏死因子-α（TNF-α）表达的影响。方法 本研究于2013年3—5月在山西医科大学口腔实验室进行。将复苏培养冻存的HPDLFs进行形态学鉴别后,用10 μg/mL的LPS进行诱导,分别以0.1、1、10、50、100 mg/L的双氯芬酸钠进行干预,酶联免疫吸附试验法（ELISA法）检测HPDLFs表达IL-1β和TNF-α水平的变化。结果 对同一质量浓度LPS诱导的HPDLFs而言,双氯芬酸钠能下调HPDLFs表达IL-1β和TNF-α的水平,并且随着双氯芬酸钠质量浓度的增加,IL-1β和TNF-α的表达量呈逐渐减弱的趋势（P＜0.05）。结论 双氯芬酸钠可能对于LPS诱导的HPDLFs IL-1β和TNF-α的表达有重要的抑制作用,这为牙周病的临床治疗提供了新的思路。     

Comparison of the effect of topiramate and sodium valporate in migraine prevention: a randomized blinded crossover study

BACKGROUND: Topiramate and sodium valporate are anticonvulsants, demonstrated to be effective as monotherapy for migraine prevention in placebo-controlled trials. OBJECTIVES: To compare the relative efficacy of topiramate and sodium valporate in the prevention of migraine. PATIENTS AND METHODS: A 24-week, randomized, double-blind, crossover, clinical trial was conducted from October 2003 to September 2004. A total of 64 patients with migraine headache, aged 14 to 57 years, were randomly allocated to the 2 treatment groups. The first group received topiramate (25 mg daily increment over 1 week to 50 mg) for a total of 2 months. The second group received sodium valporate (200 mg daily increment over 1 week to 400 mg) for 2 months. Response to treatment was assessed at 0, 1, 8, 16, and 24 weeks after start of therapy. RESULTS: Topiramate appeared to be equivalent in efficacy and safety to sodium valporate. A significant decrease in duration, monthly frequency, and intensity of headache occurred in both groups. Of the 32 patients treated with sodium valporate, the mean standard deviation (SD) of monthly migraine frequency decreased from 5.4 (2.5) to 4.0 (2.8) episode per month, headache intensity from 7.7 (1.2) to 5.8 (1.7) by visual analog scale (VAS), and headache duration from 21.3 (14.6) to 12.3 (10.7) hours (P < .001). Correspondingly, in the 32 patients treated with topiramate, the mean SD of monthly headache frequency decreased from 5.4 (2.0) to 3.2 (1.9) per month, headache intensity from 6.9 (1.2) to 3.7 (1.3), and headache duration from 17.3 (8.4) to 3.9 (2.7) hours (P < .001). CONCLUSION: This study demonstrates that treatment with topiramate and sodium valporate both significantly reduce migraine headache. This effect of topiramate and sodium valporate has previously been shown to reduce migraine headache, and we postulate that treatment with topiramate and sodium valporate may have a similar benefit.     

生理盐水漱口预防急性白血病化疗后真菌性口腔炎的研究

[目的]探讨生理盐水漱口对急性白血病化疗后真菌性口腔炎的预防作用.[方法]将120例首诊急性白血病病人随机分成对照组和实验组,对照组采用2.5%碳酸氢钠液漱口,实验组采用生理盐水漱口,急性非淋巴细胞性白血病病人漱口从化疗第1天开始至化疗结束后21 d,急性淋巴细胞性白血病病人从化疗第1天开始,连续漱口28 d,于每天晨、晚及3餐后漱口,比较两种漱口液预防真菌性口腔炎的效果.[结果]实验组霉菌性口腔炎发生率低于对照组(P＜0.05).[结论]生理盐水漱口可预防急性白血病化疗后真菌性口腔炎.     

Relationships among tumor burden, tumor size, and the changing concentrations of fibrin degradation products and fibrinolytic factors in the pleural effusions of rabbits with VX2 lung tumors

The VX2 tumor is derived from a papilloma virus-induced rabbit epithelial cell line. If VX2 tumor cells (trapped in a plasma clot) are introduced intravenously into NZW rabbits, the cells lodge in the lung capillary bed and produce tumors. Independently of the tumor burden (ie, the total tumor weight per rabbit), approximately 15% of rabbits with VX2 lung tumors accumulate an effusion in the interpleural space and this pleural effusion contains products of hemostasis. We hypothesized that these products were of intra-tumoral origin and that they changed in concentration as tumor burden increased. Interrelationships among lung-, tumor-weights, and pleural effusion volumes, and the concentrations of fibrinolytic factors, their catabolic products, and other proteins of pleural effusions were measured in rabbits with a wide range of tumor burdens. Positive correlations between tumor burden and total lung weight and between pleural effusion volume and net lung weight suggested that interstitial fluid from the stroma of tumors passed directly into the extravascular space of the lung(s) and into the interpleural space(s). Analyses of pleural effusions indicated that plasminogen-, alpha(2)-antiplasmin-, and plasminogen activator inhibitor-1-related proteins, urokinase-like- and tissue-plasminogen activator activities, and vascular endothelial growth factor increased in concentration up to a tumor burden of approximately 20-25 g. Plasmin activity and intact fibrinogen were absent. The concentration of fibrin(ogen) degradation products did not change significantly up to a tumor burden of approximately 25 g but increased substantially as tumor burdens exceeded 25 g. In conclusion, interstitial fluid from tumors enters the extravascular space of the host and may accumulate with fluid from non-tumor sources as a pleural effusion. The concentrations of fibrinolytic factors and their products in pleural effusions reflect the tumor burden of the rabbit. Conceivably, the components of a malignant effusion contain much information about the extent of tumor growth.     

The Effect of K-ATP Channel Blockage During Erythropoietin Treatment in Renal Ischemia-Reperfusion Injury

ATP dependent K channels (K-ATP) take part in the Erythropoietin (EPO) induced cardioprotection but these channel activations have role in cytoprotective role of EPO in the renal ischemia reperfusion (IR) damage is still unknown. For this purpose rats were pretreated with EPO (500 IU/kg) and/or K-ATP channel blocker glibenclamide (40mM/kg) i.p. before bilateral renal IR damage. Renal tissues were used for histological examination and measurement of caspase-3 and TNF-α levels. Renal functions were evaluated by glomerular filtration rate (GFR) fractional excretion of sodium (FENa) and potassium (FEK). Renal TNF-α and caspase-3 levels were decreased in both glibenclamide and EPO-treated IR rats compared to untreated rats. The protection afforded by the pretreatment with EPO alone was greater than that of administering glibenclamide alone. Application of glibenclamide at the same time partly abolished the cytoprotective effect of EPO treatment. K-ATP mediated cytoprotection is not the main mechanism of protective effect of EPO.     

Hypertonic Sodium Bicarbonate for Taxus media-induced Cardiac Toxicity in Swine

OBJECTIVE: To determine whether intravenous (IV) hypertonic sodium bicarbonate is effective in the reversal of QRS widening associated with severe Taxus intoxication. METHODS: Seventeen anesthetized and instrumented swine were poisoned with an IV extract of Taxus media until doubling of the QRS interval on electrocardiography was achieved. After poisoning (time zero), the animals received either 4 mL/kg IV 8.4% sodium bicarbonate (experimental group; 6 animals), a similar volume of 0.7% NaCl in 10% mannitol (mannitol group; 6 animals), or nothing (control group; 5 animals). The main outcome parameter was QRS duration. Secondary outcome parameters were mean arterial pressure (MAP), heart rate (HR), and cardiac index (CI = cardiac output/kg). Additionally, arterial pH, partial pressure of carbon dioxide (pCO(2)), and plasma-ionized calcium, sodium, and potassium were monitored. RESULTS: Taxus toxicity, defined as a 100% increase in QRS duration, was produced in all animals. The animals were similar in regard to baseline and time 0 physiologic parameters as well as amount of Taxus media extract administered. From times 5 through 30 minutes, following assigned treatment, significant increases in QRS duration were detected in the experimental and mannitol groups compared with the control group. A significant lowering of MAP was found in the experimental group compared with the control group. No significant difference between groups was noted in HR or CI. The swine treated with hypertonic sodium bicarbonate had a statistically significant increase in pH, plasma sodium concentration, and base excess compared with the other groups. CONCLUSIONS: Hypertonic sodium bicarbonate was ineffective in reversing the widening of QRS interval associated with Taxus poisoning in this swine model.     

阿仑膦酸钠与鲑鱼降钙素对腰椎后路椎间融合术后疗效的比较研究

【摘要】目的 探讨阿仑膦酸钠与鲑鱼降钙素对椎间融合临床疗效的差异。方法 回顾性分析我科自2010年9月~2012年8月间治疗168例腰椎管狭窄合并腰椎间盘突出症患者资料,所有患者均行椎弓根螺钉固定、后路椎间融合术。依照PLIF术后用药的不同将患者机分为阿仑膦酸钠组(A组,n=51),鲑鱼降钙素组(B组,n=52)和对照组(C组,n=65,不使用任何抗骨质疏松及补钙药物)。比较患者的基本情况、临床效果和影像学结果(融合率和手术节段椎间隙高度的变化)。结果 术后随访半年~2年1个月,平均18个月。A、B、C组三组的优良率分别为88.2%、88.5%、61.5%,A、B组优良率均较对照组明显提高,但A、B组间优良率差异无显著性意义;A组和B组在手术时间、失血量以及住院时间上差异也无显著性。术后1年随访时融合率A组为84.3%,B组84.6%,C组53.8%,A、B组均高于C组,A、B组间比较差异无显著性意义。三组患者术后椎间隙高度均有不同程度的丢失,A组1.1 (0.6~1.9)mm、B组1.1 (0.8~2.1) mm,两组间比较差异无显著性意义,但A、B组椎间隙高度丢失程度均较对照组C组4.0 (1.9~4.9) mm明显降低。结论 腰椎后路椎间融合术(PLIF)术后规范使用阿仑膦酸钠或鲑鱼降钙素能够获得令人满意的临床效果,具有较高的椎间植骨融合率及较少的椎间隙高度丢失。     

果糖二磷酸钠对柔红霉素诱导的急性白血病患儿血浆脑钠素浓度的影响

目的:通过观察急性白血病患儿应用柔红霉素(daunorubicin,DNR)化疗后其血浆脑钠素(brain natriuretic peptide,BNP)水平的改变及应用不同心肌保护药后BNP水平的变化,探讨能早期监测DNR心肌毒性并可筛选出更好保护心肌药的指标。方法:选择2003～2005年新诊断的急性白血病患儿31例,均采用柔红霉素 长春新碱 左旋门冬酰胺酶 泼尼松(DVLP)方案诱导化疗.化疗期间分别应用果糖二磷酸钠(fructose sodium diphosphate)(实验组)或参麦注射液(对照组)保护心肌。在应用DNR前后用酶联免疫吸附试验(enzyme linked immunosobent assaay)测定患儿血浆BNP水平,并同时常规检测患儿化疗前后心肌酶谱(LDH_1、CPK-MB)及心电图(ECG)。结果:研究组(FDP组)患儿化疗后血浆BNP浓度从(3.89±1.43)ng·L~(-1)增加到(15.12±4.38)ng·L~(-1)(P<0.00)。对照组(参麦组)从(3.72±1.38)ng·L~(-1)增加到(18.45±5.29)ng·L~(-1)(P<0.001)。两组化疗前BNP水平无显著差异(P>0.05),而化疗后FDP组患儿血浆BNP水平较参麦组低(P<0.001)。两组化疗前后ECG及LDH_1、CPK-MB均无明显变化。结论:在急性白血病患儿应用DNR化疗时,BNP可用于监测DNR对心脏的早期影响和判断心肌保护药的效果。