Endoscopic therapy for pouch problems: Can we avoid surgery?

While restorative proctocolectomy and ileal pouch-anal anastomosis significantly improves patients’ quality of life, the reconstructive surgery is often associated with various structural, inflammatory, and functional disorders. Those disorders have been traditionally managed with surgery. However, the past two decades have witnessed a growing role of endoscopic management of strictures, prolapse, anastomotic leaks, sinuses, fistulae, and polyps. The main advantages of endoscopic therapy are its less invasiveness in nature and better tolerance over surgery. Endoscopic sinusotomy is at least as effective as surgical pouch redo for a majority of pouch presacral sinuses, while carrying a lower risk for procedure-associated complications.     

Reliability of a functional magnetic resonance imaging task of emotional conflict in healthy participants

Task‐based functional neuroimaging methods are increasingly being used to identify biomarkers of treatment response in psychiatric disorders. To facilitate meaningful interpretation of neural correlates of tasks and their potential changes with treatment over time, understanding the reliability of the blood‐oxygen‐level dependent (BOLD) signal of such tasks is essential. We assessed test–retest reliability of an emotional conflict task in healthy participants collected as part of the Canadian Biomarker Integration Network in Depression. Data for 36 participants, scanned at three time points (weeks 0, 2, and 8) were analyzed, and intra‐class correlation coefficients (ICC) were used to quantify reliability. We observed moderate reliability (median ICC values between 0.5 and 0.6), within occipital, parietal, and temporal regions, specifically for conditions of lower cognitive complexity, that is, face, congruent or incongruent trials. For these conditions, activation was also observed within frontal and sub‐cortical regions, however, their reliability was poor (median ICC < 0.2). Clinically relevant prognostic markers based on task‐based fMRI require high predictive accuracy at an individual level. For this to be achieved, reliability of BOLD responses needs to be high. We have shown that reliability of the BOLD response to an emotional conflict task in healthy individuals is moderate. Implications of these findings to further inform studies of treatment effects and biomarker discovery are discussed.     

Brilliance型16排螺旋CT的故障分析与维修

针对日常使用中遇到的Brilliance 16排螺旋CT高压系统、机架以及控制器局域网络(CAN)通讯等故障现象进行分析与维修,最终通过更换滤波电容、机架数据采集控制器(DMC)电源以及信号刷等配件得以排除故障。通过对故障准确判断以及合理运用厂家Service模式下的维修工具软件快速解决故障,保障了影像科检查工作的顺利进行,从而提高设备的稳定性。     

危重监护与输液控制诊疗一体化系统一基于CAN总线的监护输液基站

目的：在重症监护患者的治疗过程中,病人病情复杂而多变,若不及时处理往往会危及到病人生命,根据病人病情变化来实时控制输液也显得越来越重要。传统的输液系统仅具备开环输液控制功能。无法根据病人的实时生理状况自动调节输液,需要医生手动操作。为此我们将生理参数监护和输液控制有机结合起来。提出“危重监护与输液控制诊疗一体化系统”,实现输液的闭环控制,提高ICU输液治疗质量。本文介绍该系统的基于CAN总线的监护输液基站。方法：监护输液基站系统由监护板卡、平板电脑、CAN通讯接Ll卡三部分组成。监护板卡负责采集病人的实时生理信息,平板电脑负责处理该信息并根据其变化控制输液参数,CAN通讯接口卡负责与输液设备进行通讯,将平板电脑的控制命令下传并接受输液设备的运行状态等反馈信息,从而实现简单闭环输液控制。此外,监护输液基站还可以通过wi-Fi无线局域网与中央服务器连接,实现基站与服务器的信息同步。结果：该系统不仅能协调多台输液设备同时工作。还可以根据病人的实时生理数据变化来完成简单闭环输液控制,与服务器同步的数据准确无误。结论：该系统将生理监护和输液治疗两部分有机结合,实现了输液的简单闭环控制,还具有稳定性高、抗干扰能力强等特点,给ICU医务工作者对工作提供了便利,同时也对重症患者的监护和治疗具有相当重要的意义。     

Arylazopyrazole AAP1742 Inhibits CDKs and Induces Apoptosis in Multiple Myeloma Cells via Mcl‐1 Downregulation

Inhibitors of cyclin‐dependent kinases 9 have been developed as potential anticancer drugs for the treatment of multiple myeloma. We have previously prepared a library of arylazo‐3,5‐diaminopyrazole inhibitors of CDKs. Here, we describe a novel member, AAP1742 (CDK9 inhibition with IC₅₀ = 0.28 μm ), that reduces the viability of multiple myeloma cell lines in low micromolar concentrations. Consistent with inhibition of CDK9, AAP1742 decreases the phosphorylation of RNA polymerase II and inhibits mRNA synthesis of anti‐apoptotic proteins Mcl‐1, Bcl‐2, and XIAP, followed by apoptosis in the RPMI‐8226 cell line in a dose‐ and a time‐dependent manner. These results are consistent with the biochemical profile of AAP1742 and further suggest cellular inhibition of CDK9 as a possible target for anticancer drugs.     

Long‐lasting intrinsic persistent firing in rat CA1 pyramidal cells: A possible mechanism for active maintenance of memory

The hippocampus is critical for memory tasks which require an active maintenance of memory for a short period of time; however, the underlying neural mechanisms remain unknown. Most theoretical and computational models, which date back to the classic proposals by Donald Hebb in 1949 , have been self‐constrained by anatomy, as most models rely on the recurrent connectivity in region CA3 to support “reverberating activity” capable of memory maintenance. However, several physiological and behavioral studies have specifically implicated region CA1 in tasks which require an active maintenance of memory. Here, we demonstrate that despite limited recurrent connectivity, CA1 contains a robust cellular mechanism for active memory maintenance in the form of self‐sustained persistent firing. Using in vitro whole‐cell recordings, we demonstrate that brief stimulation (0.2–2 s) reliably elicits long‐lasting (> 30 s) persistent firing that is supported by the calcium‐activated non‐selective cationic current. In contrast to more traditional ideas, these data suggest that the hippocampal region CA1 is capable of active maintenance of memory. © 2013 Wiley Periodicals, Inc.     

基于CAN的通讯适配器的开发

CAN总线上的节点是网络上的信息接收和发送站,本文介绍CAN总线系统智能结点接口电路的设计;CAN接口电路软件的设计,解决传统的RS232接口设备向CAN接口转换的问题。