萘普生的重排法合成

采用碘为重排试剂,使丙酰萘甲醚在原甲酸三乙酯的存在下进行1,2-芳基迁移重排成2-(6-甲氧基-2-萘基)丙酸乙醇,继而碱水解制得dl一萘普生。反应条件温和。总收率57％(以萘甲醚计)。     

Pharmacological preconditioning by milrinone: Memory preserving and neuroprotective effect in ischemia-reperfusion injury in mice

We tested the neuroprotective effect of milrinone, a phosphodiesterase III inhibitor, in pharmacological preconditioning. Bilateral carotid artery occlusion for 12 min followed by reperfusion for 24 h produced ischemia-reperfusion (I/R) cerebral injury in male Swiss albino mice. Cerebral infarct size was measured using triphenyltetrazolium chloride staining. Memory was assessed using the Morris water maze test, and motor coordination was evaluated using the inclined beam walking test, rota-rod test, and lateral push test. Milrinone (50 μg/kg & 100 μg/kg i.v.) was administered 24 h before surgery in a separate group of animals to induce pharmacological preconditioning. I/R increased cerebral infarct size and impaired memory and motor coordination. Milrinone treatment significantly decreased cerebral infarct size and reversed I/R-induced impairments in memory and motor coordination. This neuroprotective effect was blocked by ruthenium red (3 mg/kg, s.c.), an intracellular ryanodine receptor blocker. These findings indicate that milrinone preconditioning exerts a marked neuroprotective effect on the ischemic brain, putatively due to increased intracellular calcium levels activating calcium-sensitive signal transduction cascades.     

圣手镇痛活络酊治疗颈肩腰腿疾病关节肌肉疼痛660例疗效分析

目的观察圣手镇痛活络酊治疗颈肩腰腿疾病引起的关节肌肉疼痛的近期疗效。方法将1300例颈肩腰腿疾病关节肌肉疼痛的患者随机分为治疗组和对照组,治疗组660例,用圣手镇痛活络酊外敷治疗;对照组640例用舒筋活血汤口服治疗,10天为1个疗程。1个疗程结束后评定近期疗效。结果2组治疗前疼痛、肿胀、压痛、功能受限等积分差异无显著意义(P>0.05);治疗后2组在功能受限等体征方面差异有显著意义(P<0.05),在疼痛、肿胀等症状及压痛等体征方面的差异有非常显著意义(P<0.01);2组近期疗效评价差异有非常显著意义(P<0.01)。结论圣手镇痛活络酊是治疗颈肩腰腿疾病引起的关节肌肉疼痛的有效药物。     

Biological evaluation of chuangYuLing dressing—A multifunctional medicine carrying biomaterial

Summary The safety of Chuangyuling (CYL) dressing—a multifunctional medicine carrying biomaterial was evaluated in order to provide foundation for the application of CYL as material used in the wound healing. The traditional Chinese medicine (TCM) extract solution was compounded with scaffolds (gelatin and Bletilla hyacinthine gum), and then frozen and dried to form spongy and porous material CYL. According to the standard of biological evaluation of medical devices that was instituted by the ministry of health of China^[1], the biological evaluation of CYL dressing was conducted. The results showed that all the contents of biological evaluation test consisting of acute toxicity, skin irritation, sensitization and cytotoxicity met the requirement of standards. It was concluded that the biomaterial carrying TCM (CYL dressing) is safe for application of wound healing. PENG Rui, male, born in 1967, Associate Professor     

Broca-Sulzer效应和时间背景效应的共同机制

目的:探讨两种明度知觉时间效应——Broca-Sulzer效应和时间背景效应的关系及机制。方法:实验于2006-06-10在中南民族大学脑认知科学研究室完成。选择5名中南民族大学硕士研究生作为受试者,均视力正常或矫正视力正常,自愿参加实验。刺激呈现在校准过的22"Ⅱyama HM204DT显示器上,屏幕距被试58cm,屏幕的背景为黑色,亮度小于1cd/m2,刷新频率为200Hz。①第1个实验,刺激是两个物理亮度相等的闪光刺激,它们出现在一个固定点的两边,一个呈现时间短暂,另一个呈现时间较长,要求被试观察哪个闪光刺激更亮。考察闪光刺激的物理亮度(3,6,12cd/m2)和短暂闪光刺激的呈现时间(30,60,120ms)对时间背景效应现象的影响。②第2个实验,采用单眼和双眼分离两种观察方式,使得刺激呈现单眼呈现15ms,单眼呈现30ms,双眼呈现30ms3种情况,在刺激呈现结束后,要求被试报告闪光刺激明暗关系。结果:5名被试均进入结果分析。①实验1结果:闪光刺激亮度为3,6,12cd/m2时,观察到短暂闪光刺激比较长闪光刺激亮的频度分别为9%,87%,100%;短暂闪光刺激的呈现时间为30,60,120ms时,观察到短暂闪光刺激比长闪光刺激亮的频度分别为23%,94%,26%。②实验2结果:当左右视野相对区域融合后,双眼融合成的30ms闪光刺激和单眼呈现15ms的闪光刺激亮度感觉差不多,单眼30ms的闪光刺激最亮。结论:①在高亮度条件下,容易发生时间背景效应,即短暂闪光刺激的明度会随其发生延迟的渐增而显得更亮。②当短暂闪光刺激持续时间在50~100ms,容易发生时间背景效应。③时间背景效应所要求的闪光刺激的亮度和持续时间,都与Broca-Sulzer效应的产生条件相一致,说明这两种效应高度相关,且具有共同的机制,它们相关的亮度信息加工区域位于双眼信息汇聚之前。     

The contribution of molecular pathology to the classification of thyroid tumors

Significant molecular advances have been undertaken for the past two decades in the field of thyroid follicular neoplasms, including a detailed genomic profile of papillary thyroid carcinoma (PTC) by The Cancer Genome Atlas (TCGA) project. These molecular discoveries led to a better understanding of the pathogenesis of thyroid neoplasms and resulted in reclassification of certain types of thyroid tumors. This review discusses how, 1) the molecular profiles of follicular-patterned lesions led to the reclassification of the follicular variant of PTC into non-invasive follicular thyroid neoplasm with papillary like nuclei, 2) the genotyping of Hürthle cell neoplasm provided the rationale to classify these tumors independently from follicular adenomas and carcinomas, and 3) BRAF and RAS molecular signatures have the potential of subclassifying PTC and poorly differentiated thyroid carcinoma into clinically relevant molecular subtypes.     

睡眠监测的控制系统

目的：在不影响被测者睡眠过渡过程的情况下，准确测评睡眠过渡状态。研究入睡的历程、失眠的机制以及解除失眠的有效措施。 方法；融合认知科学、生物控制论和信息论，借鉴、利用认知行为学控制失眠的理论、方法，以及现代微电子技术和计算机技术的新成果，根据人类睡眠过渡过程的特征，构造客观、定量、无干扰、不唤醒的更接近人类自然睡眠方式的新研究方法，以ARM微控制器和VxWorks实时操作系统为基础的“微型腕式嵌入式计算机”来中断从清醒到睡着这一过渡过程中的失控思维活动。 结果：“腕式嵌人式计算机”的微小结构（包括传感器）以及它与环境的独立，保证了机-脑接口的无干扰性。使用者的反应只需以任意方式的手指微动表达，而传感器检测到的信号的真伪通过实时处理、模式识别便可确认。则保证了机-脑接口的无唤醒性。结论：机-脑接口有利于人睡，对睡眠没有干扰和唤醒。