音乐训练经历对听觉时域分析能力的影响

目的通过比较有无音乐训练经历的正常听力青年人的时域分析能力,探讨音乐训练对听觉功能的影响。方法选择双耳平均听阈≤20 d B HL,无耳科疾病的290名青年人作为研究对象,其中有多年专业音乐训练背景的受试者为音乐训练组(130例,平均24.2岁),其余为对照组(160例,平均21.3岁),分别进行时域间隔感知能力测试,记录受试者间隙检测阈值,并使用SPSS 20.0进行数据分析。结果音乐训练组受试者间隙检测阈值为(3.44±1.42)ms;对照组间隙检测阈值为(4.45±1.39)ms,两组数据差异具有统计学意义(P0.05)。性别、耳别等因素对对照组的间隙检测阈值无明显影响(P0.05)。可听度对间隙检测阈值有影响(P0.05),当可听度20 d B SL时,随给声强度增加间隙检测阈值明显下降;当可听度20 d B SL时,随声强度增加间隙检测阈值无显著变化。结论听觉中枢时域处理能力与性别和耳别无关,受可听度影响,且音乐训练经历能明显提高时域处理能力。     

通过独立的伦理委员会保护受试者权益

首先介绍了我国临床药理基地(Baced of clinical Tical)的设置、职能、任务和现行的临床试验分期,概述了我国临床试验管理规范中关于维护和尊重受试者权益的基本要求.重点介绍了通过设置独立的伦理委员会,按照赫尔辛基宣言等国际公认的法规和准则,从保障受试者权益的角度,对临床药理试验全面进行伦理学评审和把关的途径和方法.最后还简要介绍了作者所主持的学校医学伦理学委员会坚持工作的独立性,坚持正确的评审原则,坚持会审会签制度等有效方法,并对可能出现的问题作了讨论.     

BCL—2和增殖细胞核抗原子在子宫肌瘤中的表达

目的：研究bcl-2蛋白和增殖细胞核抗原（PCNA）在子宫肌瘤和正常子宫肌层中的表达及其在肌瘤发生发展中的作用。方法：用免疫组织化学ABC法检测40例子宫肌瘤组织和正常子宫平滑肌组织中的bcl-2蛋白和PCNA的表达。结果：bcl-2和PCNA在肌瘤组织中表达均明显强于正常 子宫平滑肌组织（P＜0．001）。结论：bcl-2和PCNA在肌瘤中过度表达以及两者的共同作用,可能在子宫肌瘤的发生发展过程中起重要作用。     

适应实验方法改革,打造多元化高职实验教学

当前在实验设施,设备改进的前提下,深化机能实验教学改革,建立以能力培养为主线,开展新的实验教学方法体系的改革,创造多元化实验教学方法已成为必然的趋势。我们通过实验室的改革,改变传统的教学理念,改革实验效果的评价方法,使实验教学更能满足能力培养的需要。     

2型糖尿病一级亲属糖耐量正常者血糖、血脂、CRP检测及意义

目的探讨2型糖尿病（T2DM）一级亲属糖耐量正常者血糖、血脂和c反应蛋白（CRP）的变化，了解T2DM自然病程中一些早期生理改变，提出预防措施．方法选择T2DM一级亲属糖耐量正常者（93名）为试验组，3代无糖尿病家族史健康者（93名）为对照组，对2组的体重指数（BMI）、糖化血红蛋白（HbA1C）、口服葡萄糖耐量试验（OGGT）葡萄糖、血脂、CRP观测指标进行比较分析．结果T2DM一级亲属糖耐量正常者与3代无糖尿病家族史的健康者BMI、OGGT试验的30、60、120min血糖及OGTT葡萄糖曲线下面积（GluAUC）、甘油三脂（TG）、CRP比较差异有显著意义．结论T2DM一级亲属糖耐量正常者已存在血糖、血脂、CRP潜在或异常的变化，在糖耐量正常阶段就应该采取糖尿病的综合预防措施，这有助于预防或延缓T2DM的发生．     

正常女大学生经期穴位体表温度与室内温度和湿度相关性分析

目的:通过观察正常女大学生经期经穴体表温度和同名穴位温差与室内温度和湿度的相关性,判断以这两个指标作为经穴反映胞宫功能状态的客观指标时,是否应考虑环境因素的影响。方法:正常女大学生49人,选取胞宫相关经穴血海、地机、中都、三阴交、太溪、太白、太冲、水泉,非相关经穴悬钟以及悬钟旁非经非穴,于经期第1天连续动态探测各测试点体表温度60min,每10min记录1次室内温度和湿度。利用发展模型建立因变量x(室内温度或温差)与y(体表温度或温差)之间的关系,进而判断两者的变化是否相关。结果:正常女大学生经期第1天双侧血海、地机、中都、悬钟、非穴的体表温度与室内温度呈正相关(P<0.05);各测试点同名穴位温差与室内温度相关性不显著(P>0.05);各测试点的体表温度与室内湿度相关性不显著(P>0.05);各测试点同名穴位温差与室内湿度相关性不显著(P>0.05)。结论:经穴体表温度较同名穴位温差易受室内温度的影响,两者均不易受室内湿度的影响,推测如果经穴体表温度作为反映胞宫生理及病理变化的客观指标时应该把室内温度作为协变量考虑,建议采用同名穴位温差作为穴位反映机体生理及病理变化的客观指标。     

湿润烧伤膏在慢性糖尿病足溃疡愈合中的作用:随机对照试验

目的评估湿润烧伤膏（MEBO）在促进慢性糖尿病足溃疡（DFUs）愈合中的疗效和安全性。方法2005年至2010年间就诊于科威特艾哈迈迪医院的慢性糖尿病足溃疡患者被随机分为MEBO组（66例患者,82处溃疡）和生理盐水湿润敷料组（62例患者,78处溃疡）。前瞻性收集患者的人口统计学特征以及溃疡创面特点等数据。试验12周期间每隔两周计算一次患者的溃疡表面积（SA）和愈合指数（HI）,24周时记录继发性截肢和新溃疡形成的情况。结果两组患者的人口学特征,临床症状及溃疡特点相似。MEBO组患者在第2周和第4周时分别有愈合指数的明显升高和溃疡表面积的明显下降（P〈0．01）;与生理盐水组在治疗12周时25．7％的完全愈合率相比,MEBO组一半以上的溃疡创面（53．7％）都实现了完全愈合（P=0．0006）;治疗12周时,生理盐水组28．2％的患者愈合指数〈0．5,而MEBO组无1例此状况（P=0．0001）;治疗24周时,13位患者（10．2％）行足前段截肢术,而其中只有2例患者（3％）来自MEBO组（P=0．035）;此外,每组各有2例患者在治疗24周后出现了新溃疡（P〉0．05）。实验过程中MEBO组未见任何副反应。结论1）除了具备安全性以外．MEBO可显著促进慢性糖尿病足溃疡的愈合,治疗12周时就可实现超过50％的完全愈合结果;2）MEBO组患者治疗24周后的截肢率也明显下降。     

50例正常生育力男子精液和血液激素的一年动态观察

作者对南京市50名正常男子,每月1次、连续12个月测定了精液常规、某些精液生化和血清激素水平。结果表明:精子密度每次之间波动范围较大,冬季数值比夏季显著为高(P<0.01)。其它指标包括正常形态精子、活动精子、前向运动级别、精液果糖、硷性磷酸酶、酸性磷酸酶及血清,FSH LH T 则变动不显著。精液常规中除精子密度和各参数关系不明显外,所有其它参数之间呈正相关;但精液常规、精液生化和血清激素三者互不相关。从本组研究结果,作者提出了南京市正常男子这些指标的参考正常值。     

Assessment of asymmetry in a normal occlusion sample and asymmetric patients with three-dimensional cone beam computed tomography: A study for a transverse reference plane

Objective:To characterize symmetrical features of patients with facial asymmetry and thus to find the most reliable horizontal reference lines easily used in three-dimensional images. The hypothesis was that there is a difference in the location of bilateral landmarks of the upper skull between the normal occlusion sample and skeletal Class III patients with asymmetry.Materials and Methods:Group 1 (normal occlusion sample) was composed of 20 Korean adults with normal occlusion and no noticeable asymmetry. Groups 2 through 4 were selected from patients who were diagnosed as skeletal Class III malocclusion and grouped according to the extent of asymmetry (group 2: symmetric mandible, no maxillary cant; group 3: asymmetric mandible, no maxillary cant; group 4: asymmetric mandible, more than 4 mm maxillary cant measured at maxillary first molars). Three-dimensional cone beam computed tomography images were taken before treatment, and bilateral landmarks of the skull were located and their vertical and horizontal differences compared.Results:No statistically significant difference was noted in the position of bilateral landmarks between groups, except for AG (P < .05). AG showed significant differences in vertical dimension (P < .001) and in horizontal dimension (P < .0001) between groups. The mean of the difference was clearly greatest at FM.Conclusions:The hypothesis is rejected. All groups had a similar pattern of asymmetry in the upper third of the face. Therefore, the transverse reference line of the bilateral Z or orbitale may be used even in patients with severe asymmetry of the maxilla with reference to the clinical photos.     

Impact of dosing regimen of custirsen,an antisense oligonucleotide,on safety,tolerability and cardiac repolarization in healthy subjects

Aims

Custirsen (OGX-011/TV-1011), a second-generation antisense oligonucleotide (ASO) that reduces clusterin production, is under investigation with chemotherapy in patients with solid tumours. Custirsen is associated with constitutional symptoms (CS) that may interfere with clinical pharmacology investigations, such as QT interval studies. Experience with other ASOs suggests NSAID premedication may ameliorate CS, but we observed suboptimal outcomes in healthy subjects given custirsen and NSAIDs. We sought to establish a custirsen regimen for future clinical pharmacology studies in healthy subjects.

Methods

Subjects received custirsen (640 mg intravenously over 120 min) with dexamethasone premedication or increasing doses (320, 480, 640 mg over 6 days) of custirsen with dexamethasone premedication, then one full custirsen dose without premedication on day 8. Incidence/severity of adverse events (AEs) and extensive electrocardiogram readings were evaluated. Pharmacokinetic parameters were estimated.

Results

AEs included CS, elevated transaminases and prolonged activated partial thromboplastin time (aPTT) that were predominantly grade 1/2. Administration of increasing custirsen doses and dexamethasone premedication reduced the incidence of CS associated with full dose custirsen. Transaminase elevation showed a dose-dependent effect (0% at days 2, 4, 27% at day 6) with the highest custirsen doses. Increasing doses of custirsen may have mitigated the severity but not incidence of aPTT prolongation. Neither regimen was associated with cardiac repolarization changes in QT values or concentration–effect analyses. The custirsen pharmacokinetic profile was consistent with previous experience.

Conclusion

Escalation of custirsen dose combined with dexamethasone premedication reduced CS associated with full dose custirsen and should be considered in future clinical pharmacology studies of custirsen.