复发性口疮(RAU)与唾液免疫球蛋白、补体及溶菌酶活性关系的实验研究

本文对９９例复发性口疮患者，分别在初诊治疗前（发作期）和治疗后３月未发作时进行唾液ＳＩｇＡ、ＩｇＧ、ＩｇＭ、Ｃ３、Ｃ４及溶菌酶含量和活性检测，并以４５名健康学生唾液相应成份作为正常对照。实验结果表明：复发性口疮患者治疗前唾液ＳＩｇＡ、ＩｇＧ、ＩｇＭ、Ｃ３、Ｃ４及溶菌酶含量和活性，均远远低于正常人唾液相应成份（Ｐ＜０．０１）；复发性口疮患者治疗后，其唾液ＳＩｇＡ、ＩｇＧ、ＩｇＭ、Ｃ３、Ｃ４及溶菌酶含量和活性，均较治疗前有显著提高（Ｐ＜０．０１），其中ＩｇＧ、Ｃ４及溶菌酶含量和活性恢复较明显，与正常人唾液相应成份相似（Ｐ＞０．０５）。     

童年期心理虐待和忽视、述情障碍对大学生无聊倾向的影响

目的探讨童年期心理虐待和忽视、述情障碍对大学生无聊倾向的影响及其关系。方法采用大学生无聊倾向问卷(boredom proneness scale for college students,BPS)、儿童心理虐待和忽视量表(child psychological abuse and neglect scale,CPANS)、多伦多述情障碍量表(the Toronto alexithymia scale,TAS-20)对1557名大学生进行调查,采用SPSS 22.0进行描述性统计、相关分析和回归分析。结果童年心理虐待[(26.540±8.985)分]、忽视[(32.665±10.651)分]、述情障碍的识别情感维度[(19.359±4.835)分]、描述情感维度[(14.173±3.001)分],外向思维维度[(20.383±3.429)分]与无聊倾向总分[(101.109±19.735)分]、外部刺激维度[(66.022±21.079)分]存在正相关(r=0.160~0.559,均P<0.01),而与内部刺激维度[(35.132±8.207)分]存在负相关(r=-0.302~-0.104,均P<0.01)。分层回归分析显示,在控制性别和年龄的影响后,心理虐待与忽视是无聊倾向、内部刺激和外部刺激的影响因素,分别可解释总变异的14.3%,5.1%和18.2%(△F=130.561、41.968、172.711,均P<0.01)。述情障碍的识别情绪、描述情绪和外向思维是无聊倾向、内部刺激和外部刺激的影响因素,分别可解释总变异的17.5%,9.9%和25.5%(△F=134.274、60.696、234.383,P<0.01)。结论童年心理虐待和忽视、述情障碍对大学生无聊倾向存在显著影响,主要体现在对无聊倾向的外部刺激的影响上,其中述情障碍影响最大、解释力最高。     

遗传性神经系统离子通道病基因治疗的研究进展

目的遗传性神经系统离子通道病现有的治疗方法往往难以控制病情或者患者耐受度较低,因此探索新的治疗方法势在必行。基因治疗在多项研究中显示可能应用于神经系统疾病,并可能成为未来遗传性神经系统离子通道病的有效治疗手段。同时,光遗传学、化学遗传学方法、基因编辑技术的不断进步也为遗传性神经系统离子通道病的基因治疗提供了良好的发展基础。我们将就遗传性神经系统离子通道病基因治疗的方法机制、转导载体、启动子及给药途径作一综述。     

Potential risk of mitomycin Cat high concentrations on peripheral nerve structure

Although the local application of mitomycin C may prevent epidural adhesion after laminectomy, mitomycin C can induce neurotoxicity in optic and acoustic nerves at high concentrations. To determine the safe concentration range for mitomycin C, cotton pads soaked with mitomycin C at different concentrations(0.1, 0.3, 0.5, and 0.7 mg/mL) were immediately applied for 5 minutes to the operation area of rats that had undergone laminectomy at L1. Rat sciatic nerves, instead of dorsal nerves, were used in this study. The results showed that mitomycin C at 0.1–0.5 mg/mL did not damage the structure and function of the sciatic nerve, while at 0.7 mg/mL, mitomycin C significantly reduced the thickness of the sciatic nerve myelin sheath compared with lower concentrations, though no functional change was found. These experimental findings indicate that the local application of mitomycin C at low concentrations is safe to prevent scar adhesion following laminectomy, but that mitomycin C at high concentrations( 0.7 mg/mL) has potential safety risks to peripheral nerve structures.     

Listeria monocytogenes meningoencephalitis in adults: analysis of factors related to unfavourable outcome

Purpose

To analyse the short-term outcome in patients with Listeria monocytogenes meningoencephalitis (LMME) to improve management and outcome.

Methods

Observational study with adult patients with LMME between 1977 and 2009 at a tertiary hospital in Barcelona, Spain. Parameters that predicted outcome were assessed with univariate and logistic regression analysis.

Results

Of 59 cases of LMME, 28 occurred in the last decade. Since 1987, a new protocol has been used and 29/45 patients (64 %) treated since then received adjuvant dexamethasone. In patients who received this treatment there was a trend towards fewer neurological sequelae (5 vs 33 %; p = 0.052). Antiseizure prophylaxis with phenytoin was administered in 13/45 (28 %) patients. Seizures occurred in 7/45 (16 %) patients, all in the group who did not receive phenytoin. Hydrocephalus presented in 8/59 (14 %). It was never present at admission and five patients needed neurosurgical procedures. Sequelae after 3 months were present in 8/45 (18 %), mostly cranial nerve palsy. Rhombencephalitis (RE) was related to the presence of neurologic sequelae (OR: 20.4, 95 % CI: 1.76–236). Overall mortality was 14/59 (24 %), 9/59 (15 %) due to neurological causes related to hydrocephalus or seizures. Mortality was defined as early in 36 % and late in 64 %. In the multivariate analysis, independent risk factors for mortality were presence of hydrocephalus (OR: 17.8, 95 % CI: 2.753–114) and inappropriate empirical antibiotic therapy (OR: 6.5, 95 % CI: 1.201–35).

Conclusions

Outcome of LMME may be improved by appropriate empirical antibiotic therapy, suspicion and careful management of hydrocephalus. Use of adjuvant dexamethasone or phenytoin in a subgroup of these patients might have a benefit.     

PG消毒剂的研究

PG 消毒剂含2%强化中性戊二醛,醇类和香料.该消毒剂对细菌、真菌与 HBsAg 有良好灭活作用.以其制成消毒纸巾擦手1分钟,可将自然菌减少99%.