Predictive significance of standardized uptake value parameters of FDG-PET in patients with non-small cell lung carcinoma

¹⁸F-fluoro-2-deoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) is widely used to diagnose and stage non-small cell lung cancer (NSCLC). The aim of this retrospective study was to evaluate the predictive ability of different FDG standardized uptake values (SUVs) in 74 patients with newly diagnosed NSCLC. ¹⁸F-FDG PET/CT scans were performed and different SUV parameters (SUV_max, SUV_avg, SUV_T/L, and SUV_T/A) obtained, and their relationship with clinical characteristics were investigated. Meanwhile, correlation and multiple stepwise regression analyses were performed to determine the primary predictor of SUVs for NSCLC. Age, gender, and tumor size significantly affected SUV parameters. The mean SUVs of squamous cell carcinoma were higher than those of adenocarcinoma. Poorly differentiated tumors exhibited higher SUVs than well-differentiated ones. Further analyses based on the pathologic type revealed that the SUV_max, SUV_avg, and SUV_T/L of poorly differentiated adenocarcinoma tumors were higher than those of moderately or well-differentiated tumors. Among these four SUV parameters, SUV_T/L was the primary predictor for tumor differentiation. However, in adenocarcinoma, SUV_max was the determining factor for tumor differentiation. Our results showed that these four SUV parameters had predictive significance related to NSCLC tumor differentiation; SUV_T/L appeared to be most useful overall, but SUV_max was the best index for adenocarcinoma tumor differentiation.     

Instructions of cooperation and competition influence the neural responses to others’ pain: An ERP study

Neural activities triggered by viewing other’s in pain have been previously reported to be modulated by various factors. How instructions of cooperation and competition can influence these activities has not been explored yet. In the current study, participants were instructed to play a game cooperatively or competitively with a partner. During the game, pictures showing an anonymous individual’s hand or foot in painful or non-painful situations were randomly presented in an oddball style. The event-related potentials (ERPs) when the participants passively observed these pictures under different instructions were compared. We found a significant interaction of Instruction × Picture on the P3 component, where only under competitive instruction did the painful pictures elicit significantly larger amplitudes than the non-painful pictures, but not under the cooperative instruction. This result indicates that the participants were more responsive to other’s pain in a competitive context than in a cooperative context.     

肝移植术后无激素免疫抑制方案研究进展

近50年来,肝移植技术发展迅速,肝移植术后免疫抑制方案也发生了巨大的变化,尤其是糖皮质激素的使用越来越有争议,如何有效降低急性排斥反应发生率的同时避免激素相关不良反应?如何达到免疫抑制方案最简种类、最少剂量原则?诸多问题使得许多移植中心开始探索无激素免疫抑制方案的有效性及安全性。本文拟对目前无激素免疫抑制方案种类、应用情况及治疗进展等做一综述。     

“消银解毒饮”对银屑病血热证外周血淋巴细胞调控作用研究

目的：观察正常人及银屑病患者应用消银解毒饮治疗前后外周血T淋巴细胞及共刺激因子表达的变化，探讨“消银解毒饮”对银屑病血热证外周血淋巴细胞调控作用。方法：治疗组给予连续8周消银解毒饮治疗，用流式细胞术检测，与对照组相互比较外周血T细胞亚群及共同刺激分子CD28、CD80、CD86的表达情况。结果：治疗组治疗后皮损评分降低；治疗前后与正常人相比CD3+、CD4+细胞及CD4+/CD8+降低，CD8+细胞升高；CD28疗前高于、疗后低于正常组；CD86治疗前后均明显高于正常组；CD80正常组与治疗前均无明显统计学意义，治疗后有下降的趋势。治疗组治疗前、后外周血T细胞亚群CD3+、CD4+、CD8+、CD4+/CD8+和共刺激因子CD28、CD80、CD86均无明显的统计学意义。结论：消银解毒饮临床疗效肯定；银屑病患者外周血T细胞亚群及共刺激因子的表达存在异常；患者临床症状的好转与外周血T细胞亚群及共刺激因子表达的改变是否平行相关尚不确定。     

实时三维超声成像诊断胎儿畸形的临床应用效果评价

目的探析实时三维超声成像诊断胎儿畸形的临床应用效果。方法选取我院2013年2月~2015年2月行常规检查的750例孕妇为观察对象,先给予孕妇常规二维超声检查,记录检查结果,之后给予实时三维超声成像诊断,记录诊断结果,对2次检查结果予以观察对比。结果经引产及足月分娩确诊畸形30例,二维超声检查结果相符率为60.0%,实时三维超声成像诊断结果相符率为96.7%,2次检查结果对比差异具有统计学意义(P0.05)。结论在胎儿畸形诊断中,实时三维超声成像诊断准确率高于二维超声检查,临床应用价值更高。