皱纹盘鲍中几种营养成分的测定

本文报道了皱纹盘鲍体内所含有的蛋白质（５０．８１％），粗脂肪（６．２４％）氨基酸和矿物质元素的含量，为鲍的药用提供理论依据。     

黄芪、丹参、山药及其复方对高糖所致雪旺细胞凋亡的保护作用

目的:观察中药对高葡萄糖条件下与内皮细胞(以下简称EC)共培养的雪旺细胞(以下简称SC)凋亡的干预作用。方法:建立大鼠SC与EC的共培养模型,根据存活率(形态学和MTT)筛选药物最有效作用浓度。将细胞分为正常共培养SC组、高糖共培养SC组、高糖黄芪组、高糖丹参组、高糖山药组、高糖复方组,通过凋亡率(流式细胞仪)和凋亡相关基因Bcl-2和Casepase-3的mRNA(Realtime PCR)和蛋白(Western Blot)的表达观察细胞凋亡。结果:与正常共培养组相比高糖共培养组SC凋亡率明显增高、Bcl-2mRNA和蛋白表达量明显减少,Casepase-3mRNA和蛋白表达量显著增加。加中药干预后SC凋亡率都明显降低,Bcl-2mRNA和蛋白表达量都明显增加,除高糖山药组Casepase-3mRNA减少和高糖丹参组Casepase-3蛋白减少无明显统计学意义,其余各组Casepase-3mRNA和蛋白表达量均显著减少。中药干预组之间比较,高糖复方组作用最显著。中药干预组与正常组相比,SC凋亡率无明显增高,Bcl-2mRNA和蛋白表达量明显减少,Casepase-3mRNA和蛋白表达量显著增加。结论:中药对高糖环境下与内皮细胞共培养的雪旺细胞的凋亡有保护作用,不同中药作用效果不同,复方效果最佳。     

消瘀接骨散对骨折肢体血液循环的影响及其与骨折愈合的关系

为探讨消瘀接骨散治疗骨折的作用机理，采用健康雄性家兔１０只，用直接撞击法造成家兔左胫骨中段闭合性骨折模型，并随机分为２组。实验组外敷消瘀接骨散，空白对照组不用任何药物。以血液粘度和骨折肢体血流量为指标，观察消瘀接骨散对骨折肢体的血液循环的影响。结果显示骨折后１４天实验组血液粘度明显低于空白组（Ｐ＜０．０５），肢体血流量明显高于空白组（Ｐ＜０．０５）。说明消瘀接骨散能够改善骨折肢体的血液循环，从而为骨折愈合创造良好的环境。     

胎儿宫内发育迟缓时胎盘病理改变与孕妇血及脐血中一氧化氮 …

目的 了解胎儿宫内发育迟缓（ＩＵＧＲ）时胎病理改变与母血及脐血中一氧化氮（ＮＯ）水平的关系。方法 对１９９７年１１月￣１９９８年１０月３８例妊娠合并胎儿宫内发育迟缓（ＩＵＧＲ组）及３０例正常３０例正常孕妇（对照组）分娩后的胎盘及胎儿附属物进行分析。     

绢毛蔷薇果实的化学成分

目的：研究绢毛蔷薇果实的化学成分。方法：将醇提取物用H₂O溶解,EtOAc萃取,经柱色谱分离纯化,通过波谱分析并结合化学转化鉴定化合物。结果：从该植物果实中分离、鉴定了6个化合物：euscaphic acid 3,4-monoacetonide (1), euscaphic acid (2), 4-O-β-D-吡喃葡糖基没食子酸甲酯(3),槲皮素(4),齐墩果酸(5),豆甾醇(6)。结论：1是新化合物,3为首次从植物中分离得到。     

微小RNA在牙周炎龈沟液中的表达差异及对牙周炎的调控机制

牙周炎是一种以牙周袋形成和牙槽骨吸收为特征的炎症性疾病,是40岁以上成人牙齿脱落的主要原因之一。牙周组织产生的龈沟液可以一定程度的揭示牙周的状态,其中的微小RNA (miRNA)的表达水平会根据牙周炎症的发展发生改变,可以作为牙周诊断的指标之一。miR-146a及miR-223是牙周炎进展中表达水平显著变化的miRNA,它们是目前利用龈沟液miRNA对牙周炎诊断最有潜力的生物标志物。不同miRNA可以通过调控牙周炎信号通路的不同阶段发挥作用,如通过细菌脂多糖与Toll样受体的结合、核因子κB配体信号通路及炎症因子的释放等过程调控牙周炎症进程。本文就牙周炎龈沟液中miRNA的表达差异及调控机制作一综述,以期为龈沟液miRNA准确诊断牙周炎提供新思路和新进展。     

Sleep‐disordered breathing in heart failure patients with different etiologies

BackgroundThe prevalence of sleep‐disordered breathing (SDB) is closely related to the severity of heart failure (HF), and the severity of HF is different in patients with HF of different etiologies. Hypothesis: This study aimed to explore the prevalence of SDB in patients with HFof different etiologies.MethodsHospitalized HF patients were consecutively enrolled. All patients underwent portable overnight cardiorespiratory polygraphy. Patients were divided into five groups according to the etiology of HF: ischemic, hypertensive, myocardial, valvular, and arrhythmic. The prevalence of SDB and clinical data was compared among the five groups.ResultsIn total, 248 patients were enrolled in this study. The prevalence of SDB in HF was 70.6%, with the prevalence of obstructive sleep apnea (OSA) at 47.6% and central sleep apnea (CSA) at 23.0%. Patients were divided into five groups: ischemic, hypertensive, myocardial, valvular, and arrhythmic. The prevalence of SDB among the five groups was 75.3%, 81.4%, 77.8%, 51.9%, and 58.5% (p = .014), respectively. The prevalence of OSA among the five groups was 42.7%, 72.1%, 36.1%, 37.0%, and 49.1% (p = .009), whereas the CSA was 32.6%, 9.3%, 41.7%, 14.8%, and 9.4% (p < .001), respectively.ConclusionsSDB is common in HF patients. The prevalence and types of SDB varied in HF with different etiologies, which may be related to the different severities of HF. SDB was highly prevalent in patients with ischemic, hypertensive, and myocardial HF. Hypertensive HF patients were mainly complicated with OSA, while myocardial HF patients were mainly complicated with CSA. Both conditions were highly prevalent in ischemic HF patients. The prevalence of SDB was relatively low in valvular and arrhythmic HF patients, and OSA was the main type.     

Effects of Reserve Capacity on Seismic Response of Concentrically Braced Frames by Considering Brace Failure

In order to study the influence of brace failure on the seismic response of concentrically braced frames and the improvement of the residual structure’s resistance to collapse due to reserve capacity, a series of concentrically braced frame prototypes with different story numbers is designed. A matrix of six finite-element concentrically braced-frame (CBF) models is established, which is varied by the number of stories and the level of reserve capacities. Accuracy of the numerical model is verified by comparing the responses of the shaking-table test of the concentrically braced frames, under 10 different working conditions. Then, a nonlinear time-history analysis, considering brace failure in one specified story, is carried out. The results show that the story-drift angle of the failure story as well as its adjacent stories increases greatly in the ideal pinned model. The above phenomenon is particularly serious, when the failure occurs at the top or bottom of the structure. With the reserve capacity brought by column continuity, and the semi-rigid rotation capacity of the beam-to-column and column-to-base connections are taken into consideration, the increase in story-drift angle caused by the brace failure is effectively reduced. However, the inherent reserve capacity has little influence on the dynamic characteristics of concentrically braced frames in the elastic stage.     

IL‐27 improves adoptive CD8+ T cells’ antitumor activity via enhancing cell survival and memory T cell differentiation

IL‐27 is an anti‐inflammatory cytokine that triggers enhanced antitumor immunity, particularly cytotoxic T lymphocyte responses. In the present study, we sought to develop IL‐27 into a therapeutic adjutant for adoptive T cell therapy using our well‐established models. We have found that IL‐27 directly improved the survival status and cytotoxicity of adoptive OT‐1 CD8⁺ T cells in vitro and in vivo. Meanwhile, IL‐27 treatment programs memory T cell differentiation in CD8⁺ T cells, characterized by upregulation of genes associated with T cell memory differentiation (T‐bet, Eomes, Blimp1, and Ly6C). Additionally, we engineered the adoptive OT‐1 CD8⁺ T cells to deliver IL‐27. In mice, the established tumors treated with OT‐1 CD8⁺ T‐IL‐27 were completely rejected, which demonstrated that IL‐27 delivered via tumor antigen–specific T cells enhances adoptive T cells’ cancer immunity. To our knowledge, this is the first application of CD8⁺ T cells as a vehicle to deliver IL‐27 to treat tumors. Thus, this study demonstrates IL‐27 is a feasible approach for enhancing CD8⁺ T cells’ antitumor immunity and can be used as a therapeutic adjutant for T cell adoptive transfer to treat cancer.     

KIF23 is a potential biomarker of diffuse large B cell lymphoma: Analysis based on bioinformatics and immunohistochemistry

Diffuse Large B Cell Lymphoma (DLBCL), the most common form of blood cancer. The genetic and clinical heterogeneity of DLBCL poses a major barrier to diagnosis and treatment. Hence, we aim to identify potential biomarkers for DLBCL.Differentially expressed genes were screened between DLBCL and the corresponding normal tissues. Kyoto Encyclopedia of Genes and Genomes and Gene oncology analyses were performed to obtain an insight into these differentially expressed genes. PPI network was constructed to identify hub genes. survival analysis was applied to evaluate the prognostic value of those hub genes. DNA methylation analysis was implemented to explore the epigenetic dysregulation of genes in DLBCL.In this study, Kinesin family member 23 (KIF23) showed higher expression in DLBCL and was identified as a risk factor in DLBCL. The immunohistochemistry experiment further confirmed this finding. Subsequently, the univariate and multivariate analysis indicated that KIF23 might be an independent adverse factor in DLBCL. Upregulation of KIF23 might be a risk factor for the overall survival of patients who received an R-CHOP regimen, in late-stage, whatever with or without extranodal sites. Higher expression of KIF23 also significantly reduced 3, 5, 10-year overall survival. Furthermore, functional enrichment analyses (Kyoto Encyclopedia of Genes and Genomes, Gene oncology, and Gene Set Enrichment Analysis) showed that KIF23 was mainly involved in cell cycle, nuclear division, PI3K/AKT/mTOR, TGF-beta, and Wnt/beta-catenin pathway in DLBCL. Finally, results of DNA methylation analysis indicated that hypomethylation in KIF23''s promoter region might be the result of its higher expression in DLBCL.The findings of this study suggested that KIF23 is a potential biomarker for the diagnosis and prognosis of DLBCL. However, further studies were needed to validate these findings.