硬膜外麻醉联合全身麻醉对乳腺癌根治术患者炎性因子、免疫功能的影响

目的 探讨硬膜外麻醉联合全身麻醉对乳腺癌根治术患者炎性因子、免疫功能的影响.方法 依据麻醉方式的不同将98例乳腺癌根治术患者分为对照组(n=47)和观察组(n=51),对照组患者给予单纯全身麻醉,观察组患者给予硬膜外麻醉联合全身麻醉.比较两组患者的手术相关指标、炎性因子[超敏C反应蛋白(hs-CRP)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)]、免疫功能指标[中性粒细胞计数、淋巴细胞计数,计算中性粒细胞与淋巴细胞比值(NLR)]、皮质醇水平和术后并发症发生情况.结果 观察组术后拔管时间、苏醒时间及住院时间均明显短于对照组(P﹤0.01).术后24 h,两组患者hs-CRP、IL-6、TNF-α、皮质醇水平均高于本组术前(P﹤0.05),但观察组患者hs-CRP、IL-6、TNF-α、皮质醇水平均低于对照组(P﹤0.05).术后24 h,两组患者中性粒细胞计数、NLR均高于本组术前(P﹤0.05),淋巴细胞计数均低于本组术前(P﹤0.05),但观察组患者中性粒细胞计数、NLR均低于对照组(P﹤0.05),淋巴细胞计数高于对照组(P﹤0.05).观察组术后并发症总发生率为11.76％,低于对照组患者的29.79％(P﹤0.05).结论 硬膜外麻醉联合全身麻醉可有效缓解乳腺癌根治术患者的炎性反应、应激反应,减轻免疫功能抑制作用,降低并发症发生率,有利于患者的术后恢复.     

Effects of Visual Erotic Stimulation on Vibrotactile Detection Thresholds in Men

This study examined the effects of sexual arousal on vibration detection thresholds in the right index finger of 30 healthy, heterosexual males who reported no sexual dysfunction. Vibrotactile detection thresholds at frequencies of 30, 60, and 100 Hz were assessed before and after watching erotic and control videos using a forced-choice, staircase method. A mechanical stimulator was used to produce the vibratory stimulus. Results were analyzed using repeated measures analysis of variance. After watching the erotic video, the vibrotactile detection thresholds at 30, 60, and 100 Hz were significantly reduced (p < .01). No changes in thresholds were detected at any frequency following exposure to the non-erotic stimulus. The results show that sexual arousal resulted in an increase in vibrotactile sensitivity to low frequency stimuli in the index finger of sexually functional men.     

Effects of sunlight exposure on the human tooth enamel ESR spectra used for dose reconstruction

The effects of solar radiation on the ESR signals in human tooth enamel were investigated. Enamel samples were exposed to the sunlight in Hiroshima, Japan, on sunny days for a total of about 228 hours over one year. The intensity of the illuminating sunlight was measured with a light meter, which then was converted to the intensity of the solar radiation. Three types of signals caused by the solar radiation were identified. The signal named S1 is identical to the gamma ray radiation-induced axially symmetrical signal and contains two signals S1( perpendicular) and S1(//) corresponding to the perpendicular and parallel components of the g-tensor characterized by g( perpendicular) = 2.0018 and g(//) = 1.9975 respectively. In addition, two other peaks named S2 and S3 are induced by the solar radiation. S2 is very near the inherent signal with g = 2.0052, possibly created by the same paramagnetic centers as the natural signal, and S3 is a weaker signal with g = 2.010. On increasing the amount of solar radiation S1 increases linearly, but S2 and S3 reach saturation. The average effect of the solar radiation on the S1( perpendicular) signal is estimated by dose equivalent gamma ray irradiation as 7.8 +/- 0.5 mGy (MJ m(-2))(-1), which corresponds to 19.6 +/- 1.3 mGy h(-1) at the latitude of Hiroshima. Signals S2 and S3 may be used to recognize the effect of solar radiation on the enamel.     

A humanized TCR retaining authentic specificity and affinity conferred potent anti‐tumour cytotoxicity

The affinity of T‐cell receptor (TCR) determines the efficacy of TCR‐based immunotherapy. By using human leucocyte antigen (HLA)‐A*02 transgenic mice, a TCR was generated previously specific for human tumour testis antigen peptide MAGE‐A3_112–120 (KVAELVHFL) HLA‐A*02 complex. We developed an approach to humanize the murine TCR by replacing the mouse framework with sequences of folding optimized human TCR variable domains for retaining binding affinity. The resultant humanized TCR exhibited higher affinity and conferred better anti‐tumour activity than its parent murine MAGE‐A3 TCR (SRm1). In addition, the affinity of humanized TCR was enhanced further to achieve improved T‐cell activation. Our studies demonstrated that the human TCR variable domain frameworks could provide support for complementarity‐determining regions from a murine TCR, and retain the original binding activity. It could be used as a generic approach of TCR humanization.     

Altered Structure and Intrinsic Functional Connectivity in Post-stroke Aphasia

Previous studies have demonstrated that alterations of gray matter exist in post-stroke aphasia (PSA) patients. However, so far, few studies combined structural alterations of gray matter volume (GMV) and intrinsic functional connectivity (iFC) imbalances of resting-state functional MRI to investigate the mechanism underlying PSA. The present study investigated specific regions with GMV abnormality in patients with PSA (n?=?17) and age- and sex- matched healthy controls (HCs, n?=?20) using voxel-based morphometry. In addition, we examined whether there is a link between abnormal gray matter and altered iFC. Furthermore, we explored the correlations between abnormal iFC and clinical scores in aphasic patients. We found significantly increased GMV in the right superior temporal gyrus, right inferior parietal lobule (IPL)/supramarginal gyrus (SMG), and left middle occipital gyrus. Decreased GMV was found in the right caudate gyrus, bilateral thalami in PSA patients. Patients showed increased remote interregional FC between the right IPL/SMG and right precuneus, right angular gyrus, right superior occipital gyrus; while reduced FC in the right caudate gyrus and supplementary motor area, dorsolateral superior frontal gyrus. Moreover, iFC strength between the left middle occipital gyrus and the left orbital middle frontal gyrus was positively correlated with the performance quotient. We suggest that GMV abnormality contributes to interregional FC in PSA. These results may provide useful information to understand the pathogenesis of post-stroke aphasia.     

20例新生儿危重症肺动脉瓣狭窄及闭锁介入治疗的围手术期护理

目的 探讨经导管射频瓣膜打孔并球囊肺动脉瓣成形术治疗新生儿危重症肺动脉瓣狭窄及闭锁的围手术期护理.方法 对20例接受介入治疗患儿,术前做好家长的心理支持工作,时患儿用药密切观察;术后严密观察病情变化,加强氧疗、呼吸道护理.结果 5例出现并发症,其中2例心包积血,1例低氧血症,1例室上性心动过速,1例切口出血.经针对性的护理,所有患儿术后恢复良好,生存质量显著提高.结论 密切监测血氧饱和度、呼吸、心脏杂音、心率、心功能等指标,及时发现并处理并发症是围手术期护理的关键.     

实时三维超声心动图容量-时间曲线评价正常人左室局部舒张功能的初步研究

目的应用实时三维超声心动图(RT3DE)绘制正常人左室节段容量-时间曲线(VTC),探讨这一新技术评价左室节段舒张功能的可行性.方法应用RT3DE检查35例健康志愿者,获得节段与整体VTC曲线,比较各部分舒张功能间差异性和相关性.结果所有研究对象均获得满意RT3DE和2DE图像;可直接观察左室节段及整体运动;旋转切割全容积图像可立体显示心脏腔室的形态、结构;分析三维数据绘制动态rVTC.结论 RT3DE技术绘制节段VTC方法评价左室局部舒张功能是可行的,能够为临床工作提供详细的定量资料,具有广阔的应用前景.     

超声心动图评估完全型肺静脉异位连接中肺静脉病变

目的 探讨超声心动图评估完全型肺静脉异位连接（TAPVC）中肺静脉病变的价值。方法 收集55例TAPVC患儿的超声心动图资料,并与CTA及术中所见进行对比。结果 应用超声心动图根据肺静脉引流部位对55例TAPVC患儿进行分类,分为心上型24例、心内型20例、心下型7例及混合型4例。15例垂直肺静脉梗阻中,心上型的梗阻多出现在垂直静脉与无名静脉或上腔静脉之间,心下型的梗阻均出现在垂直静脉与肝静脉或门静脉之间。肺静脉狭窄4例,其中3例局限性狭窄均为心内型,出现在分支肺静脉与共同肺静脉腔或右心房之间,1例弥漫性狭窄为心下型。分支肺静脉异常9例,其中超声心动图仅检出1例,而CTA检出8例。结论 超声心动图能对TAPVC中的肺静脉的引流、梗阻和分支肺静脉近端的狭窄做出更为全面的评价。CTA评估分支肺静脉的汇入和数目异常及远端肺静脉的成像方面优于超声心动图。