Lower mean platelet volume is a risk indicator of hepatocellular carcinoma recurrence following liver transplantation

Background: Lower mean platelet volume(MPV) is an indicator of platelet activity in the setting of tumor development. This study was to assess the relationship between preoperative MPV and survival outcomes of patients with hepatocellular carcinoma(HCC) following liver transplantation(LT). Methods: The demographic and clinical characteristics of 304 HCC patients following LT were retrieved from an LT database. All the patients were divided into the normal and lower MPV groups according to the median MPV. The factors were first analyzed using a Kaplan–Meier survival analysis, then the factors with P < 0.10 were selected for multivariate Cox regression analysis and were used to define the independent risk factors for poor prognosis. Results: The 1-, 3-, and 5-year tumor free survival was 95.34%, 74.67% and 69.29% in the normal MPV group, respectively, and 95.40%, 59.97% and 42.94% in the lower MPV group, respectively( P < 0.01). No significant difference was observed in post-LT complications between the normal and lower MPV groups. Portal vein tumor thrombosis(PVTT)[hazard ratio(HR = 2.24;95% confidence interval: 1.46–3.43;P < 0.01) and lower MPV(HR = 1.58;95% confidence interval: 1.05–2.36;P = 0.03) were identified as independent prognostic risk factors for recipient survival. Conclusion: Preoperative lower MPV is a risk indicator of HCC patients survival outcomes after LT.

Allolymphocyte apoptosis induced by soluble liver specific antigen

OBJECTIVE: To investigate the alloimmunogenicity of liver specific antigen and its effects on allolymphocytes. METHODS: Liver specific antigen isolated from inbred F344 rats was used as immunogen to immunize inbred Lew rats through different immunization pathways such as low-dose long-term hind footpad, high-dose portal vein and thymus immunization. Western blotting, DNA fragments gel electrophoresis, mixed lymphocyte culture (MLC) and mixed lymphocyte hepatocyte culture (MLHC) were employed to analyze the immune state after immunization. RESULTS: At the time point of sampling, different degree of specific low immunoresponses appeared in all immunized groups as well as cyclophosphamide (CY) treated group. Compared with group I, other groups expressed caspase-3 significantly as detected by using Western blotting. DNA fragment gel electrophoresis of splenocytes showed lymphocyte apoptosis. Compared with the group I, MLC of the experimental groups showed no significant changes except that of the group V, whereas MLHC decreased markedly (P<0.05). CONCLUSIONS: Liver specific antigen not only has alloimmunogenicity to induce alloimmunoreaction but induce antigen specific low immunoresponses and antigen specific lymphocyte apoptosis by high-dose or low-dose long-term immunization. It may be an important transplantation antigen that may lead to a novel way to liver transplantation immunotolerance.

A defect recognition model for cross-section profile of hot-rolled strip based on deep learning

The cross-section profile is a key signal for evaluating hot-rolled strip quality,and ignoring its defects can easily lead to a final failure.The characteristics of complex curve,significant irregular fluctuation and imperfect sample data make it a challenge of recognizing cross-section defects,and current industrial judgment methods rely excessively on human decision making.A novel stacked denoising autoencoders(SDAE)model optimized with support vector machine(SVM)theory was proposed for the recognition of cross-section defects.Firstly,interpolation filtering and principal component analysis were employed to linearly reduce the data dimensionality of the profile curve.Secondly,the deep learning algorithm SDAE was used layer by layer for greedy unsupervised feature learning,and its final layer of back-propagation neural network was replaced by SVM for supervised learning of the final features,and the final model SDAE_SVM was obtained by further optimizing the entire network parameters via error back-propagation.Finally,the curve mirroring and combination stitching methods were used as data augmentation for the training set,which dealt with the problem of sample imbalance in the original data set,and the accuracy of cross-section defect prediction was further improved.The approach was applied in a 1780-mm hot rolling line of a steel mill to achieve the automatic diagnosis and classification of defects in cross-section profile of hot-rolled strip,which helps to reduce flatness quality concerns in downstream processes.

腹腔镜与开腹胰体尾切除术对胰腺导管腺癌的治疗经验（英文）

目的:评估腹腔镜(LDP)与开腹胰体尾切除术(ODP)的并发症发生率和肿瘤清除效果。创新点:本组病例的腹腔镜手术组采用endo-GIA缓慢压榨方法处理胰腺残端,并采用根治性顺行模块化胰脾切除术,获得了较低的术后胰漏发生率和良好的手术清除效果。方法:收集4年间实施胰体尾切除手术的胰腺导管腺癌病例资料,进行回顾性分析。结论:22例胰腺导管腺癌进行了LDP手术,76例病人进行了ODP手术。比较LDP和ODP组,两组在胰漏(P=0.62)、腹腔内脓肿(P=0.44)和术后出血(P=0.34)发生率无显著性差异。LDP组和ODP组术中获取的淋巴结数量(11.2±4.6 vs.14.4±5.5,P=0.44)和淋巴结阳性病例数(36%vs.41%,P=0.71)无显著性差异。切缘阳性发生率(9%vs.13%,P=0.61)也无显著性差异。LDP组平均生存期(29.6±3.7)月,ODP组为(27.6±2.1)月,无显著性差异(P=0.35)。综上所述,腹腔镜胰体尾切除术对早期的胰腺导管癌是安全有效的。采用endo-GIA缓慢压榨方法可以预防术后胰漏发生,腹腔镜下根治性顺行模块化胰腺切除有利于肿瘤清除。腹腔镜手术可以达到和传统开腹手术相似的肿瘤清除效果。

外泌体来源的半乳糖凝集素-9预测肝移植术后排斥发生及预后（英文）

目的:外泌体及其内容物是各种肝脏疾病的潜在生物标志物。本研究探索外泌体及其内容物在肝移植排斥反应及预后中的作用。创新点:本研究发现外泌体及内含物半乳糖凝集素-9(galectin-9)在肝移植术后排斥及预后预测中发挥重要作用。方法:分别从急性排斥和肝功能稳定患者提取外泌体,进行分离、鉴定并检测其内含蛋白。候选蛋白通过在73个急性排斥病人和63个肝功能稳定病人切除肝的组织芯片中进行验证。最后将蛋白表达量和临床参数纳入Kaplan-Meier生存率和Cox回归分析。结论:外泌体来源的galectin-9可作为预测肝移植术后排斥发生及预后的生物学指标。

调节性T细胞在肝癌患者中的预后意义（英文）

目的:通过系统性文献检索和meta分析评估调节性T细胞与肝癌患者生存时间的相关性。创新点:针对调节性T细胞在肝癌患者中的预后意义进行系统性文献综述和分析,进一步证实其可以作为预测肝癌预后的指标。方法:在MEDLINE和Embase数据库中搜索相关文献,提取数据并对文献质量进行评估。有18项研究纳入到最后的分析,包括的肝癌患者多数为乙肝病毒感染。利用meta分析的方法对相关结果进行合并分析。结论:本实验证实,肿瘤组织内调节性T细胞与肝癌患者预后显著相关,调节性T细胞数量高的患者生存时间和无瘤生存期均较短。同样,外周循环调节性T细胞数量与肝癌患者生存期也呈负相关。