35例新型冠状病毒肺炎患者中医临床特征分析

目的分析广东省新型冠状病毒肺炎患者临床资料及中医证候,为该病的防治提供科学依据。方法将2020年1月23日至2020年2月14日本院收治的35例新型冠状病毒肺炎患者纳为研究对象,收集患者的基本情况、流行病学史及疾病史,通过血液生化分析及胸部CT检查患者临床情况,由5名高级职称中医师对患者舌象进行诊断,并根据《广东省新型冠状病毒感染的肺炎中医药治疗方案(试行第一版)》进行辨证。结果新型冠状病毒肺炎患者年龄分布较广,平均年龄为(44.00±15.17)岁,以男性居多,57.14%的患者有武汉及周边地区旅居史,42.86%的患者有确诊患者接触史;50%以上的患者淋巴细胞绝对值降低,CD3、CD4和、CD8降低以及C反应蛋白增加;胸部CT显示,80%以上的患者出现肺部病变,其中双肺病变占60%,病变类型以斑块状阴影居多;多数患者伴有发热(85.71%)、咳嗽(80.00%)、肌肉酸痛(42.86%)、乏力(40.00%)等临床症状;患者的证型主要是湿邪郁肺(45.71%),其次为邪热壅肺(37.14%),病机特点以湿为主,其次为热;舌苔以腻苔为主,舌质以红和淡红为主。结论新型冠状病毒肺炎患者的中医证型以湿邪郁肺为主,致病特点以"湿"为主,可针对性地采取中医治疗。     

Differential Expression of PD-L1 Between Sporadic and VHL-Associated Hereditary Clear-Cell Renal Cell Carcinoma and Its Correlation With Clinicopathological Features

Background

Programmed death ligand-1 (PD-L1) is a potential predictive biomarker for immunotherapy in several malignancies. However, the expression level and clinical significance of PD-L1 in von Hippel–Lindau (VHL)-associated hereditary clear-cell renal cell carcinoma (ccRCC) remain unclear.

主观疗效评价在恶性肿瘤中医药研究中的应用现状及进展

循证医学模式的引入使得恶性肿瘤中医治疗的有效性有了新的阐述途径,同时也对中医疗效评价体系提出了更高的要求。基于患者的自身感受,医师望闻问切四诊等得到的主观信息是主观疗效评价的重要组成方面,一直以来都是中医疗效评价的重要手段,其由单一的症状是否好转的评价发展至多重症状是否改善、整体生活质量是否提高等的评价方式,主观疗效评价的方式越来越丰富,也越来越规范,文章就目前主观疗效评价在中医药领域的研究现状及进展展开综述。     

下调FAM111B对乳腺癌细胞增殖和凋亡的影响

目的:探讨下调FAM111B对乳腺癌细胞系MDA-MB-231和MCF7细胞增殖和凋亡的影响及其机制。方法:构建siR-FAM111B慢病毒载体,转染乳腺癌MDA-MB-231和MCF7细胞,qRT-PCR检查转染组与对照组FAM111B mRNA表达,Western blotting法检测各组细胞FAM111B蛋白表达。用CCK-8法检测细胞的增殖能力。流式细胞术检测Annexin-V/PI双染各组细胞的凋亡情况。Western blotting法检测凋亡相关蛋白Bax和Bcl-2的表达。结果:siR-FAM111B成功转染MDA-MB-231和MCF7细胞,转染后应用qRT-PCR和Western blotting检测,结果显示,FAM111B mRNA与蛋白水平均下调。siR-FAM111B能抑制两种细胞的增殖。Annexin-V/PI双染结果显示,下调FAM111B诱导两种细胞凋亡。Western blotting结果显示,下调FAM111B可以促进两种细胞Bax的表达,抑制Bcl-2的表达。结论:下调FAM111B能够抑制乳腺癌细胞的增殖,通过调节线粒体凋亡通路诱导细胞凋亡。     

乙肝肝硬化肝胆湿热及肝肾阴虚证物质基础研究＊

目的 运用代谢组学技术分析乙肝肝硬化患者肝肾阴虚及肝胆湿热两种典型证候（同病异证）的血清差异代谢产物及其代谢通路，探寻虚、实两种典型证候的内在物质基础，以期从代谢水平上为中医证候分类提供客观依据。方法 对符合纳入标准的111例不同证候的乙肝肝硬化患者（肝胆湿热证40例，肝肾阴虚证41例，隐证(无证可辨）者30例）中医症状及体征进行描述性分析，发现两种不同证型的临床信息分布规律及证候特征；采用气相色谱-飞行时间质谱联用（GC-TOF/MS）技术对乙肝肝硬化患者，以及与之相匹配的60例健康人的血清样本进行检测，经非监督的主成分分析（Principal Components Analysis，PCA）、有监督的偏最小二乘判别分析（Partial Least Square Discriminant Analysis，PLS-DA）及监督的正交偏最小二乘法（Orthogonal Partial Least SquareDiscriminant Analysis，OPLS-DA）分析，找出与乙肝肝硬化疾病本身及其两种典型证候相关的差异性物质；运用MetaboAnalyst 3.0数据库，寻找并解析肝胆湿热及肝肾阴虚虚实两种证候间差异性物质的相关代谢通路。结果 （1）肝胆湿热证中出现频率较高（50%以上）的症状为小便色黄，口干，口苦，口臭或有异味等。肝肾阴虚证中出现频率较高的症状为口干、腰酸、乏力、腿软等。两证共见症/征为口干、尿黄、易怒、舌红。（2）各组间丙氨酸氨基转移酶（Alanine Aminotransferase,ALT）数值无统计学差异（P > 0.05）；与健康组比较，隐证组中白蛋白（Albumin，ALB），肝胆湿热证中总胆红素（Total Bilirubin，TBil）、直接胆红素（Direct Bilirubin，DBil）、谷草转氨酶（Aspartate Transaminase，AST）、碱性磷酸酶（Alkaline Phosphatase，ALP）、谷氨酰转肽酶（Gamma-Glutamyl Transpeptidase，GGT）、总胆汁酸（Total Biliary Acid，TBA）及ALB，肝肾阴虚证TBil、ALP、GGT、TBA、ALB值差异均有统计学意义（P < 0.05）；与隐证比较，肝胆湿热证TBil、DBil、AST、ALP、TBA、ALB，肝肾阴虚证TBA、ALB差异有统计学意义（P < 0.05）；肝胆湿热证与肝肾阴虚证相比，TBil、DBil差异有统计学意义（P < 0.05）。（3）代谢组学检测及代谢通路分析，发现各组之间代谢谱均有良好的区分，并获得各组间的差异性物质。发现肝胆湿热及肝肾阴虚两典型证的共同物质10个，去除疾病（隐证）的信息，则得到两证共同物质6个，涉及的代谢通路为甘氨酸、丝氨酸及苏氨酸代谢和苯丙氨酸代谢；同时，分别获得两证各自特异性的代谢物质各8个，分别涉及亚油酸代谢和甘氨酸、苏氨酸及丝氨酸代谢。结论 运用代谢组学技术，发现肝胆湿热及肝肾阴虚不同证之间既存在病的共同物质（同病），也存在证的差异物质（异证），从而在代谢层面上为中医证候分类的科学性提供科学依据。     

Comparison of microtransplantation,chemotherapy and allogeneic transplantation in post-remission therapy for Philadelphia chromosome-positive acute lymphoblastic leukemia

Patients with Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph⁺ ALL) have poor prognosis, and the efficacy of chemotherapy plus tyrosine kinase inhibitors (TKIs) followed by mismatched donor stem cell infusion (microtransplantation, MST) has not been determined. We retrospectively summarized 45 patients including 11 undergoing MST with TKIs, 17 receiving allogeneic transplant and 17 undergoing chemotherapy with TKIs. Improved 4-year overall survival rate was observed in the MST group (91%) compared with either transplant group (31%, P = .005) or chemotherapy group (36%, P = .013). The MST group also had higher 2-year and 4-year leukemia-free survival rates (91% and 72%, respectively) compared with either transplant group (33%, P = .005 and 33%, P = .021, respectively) or chemotherapy group (41%, P = .017 and 31%, P = .023, respectively). 2-year and 4-year cumulative incidences of hematologic relapse were lower in the MST group (9% and 28%, respectively) compared with those in the chemotherapy group (56%, P = .025 and 67%, P = .034, respectively). In patients undergoing MST, donor microchimerism was detected (1.07 × 10^-5 to 6.6 × 10^-4 copies from 9 to 1499 days) in 7 patients, and donor/patient-derived HLA*0201/2402⁺WT1⁺CD8⁺ T cells were found from 0.05% to 0.67% in 6 patients. MST may provide a favorable treatment for patients with Ph⁺ ALL.     

Dysregulated Brain Dynamics in a Triple-Network Saliency Model of Schizophrenia and Its Relation to Psychosis

Background

Schizophrenia is a highly disabling psychiatric disorder characterized by a range of positive “psychosis” symptoms. However, the neurobiology of psychosis and associated systems-level disruptions in the brain remain poorly understood. Here, we test an aberrant saliency model of psychosis, which posits that dysregulated dynamic cross-network interactions among the salience network (SN), central executive network, and default mode network contribute to positive symptoms in patients with schizophrenia.

RNA sequencing screening of differentially expressed genes after spinal cord injury

In the search for a therapeutic schedule for spinal cord injury, it is necessary to understand key genes and their corresponding regulatory networks involved in the spinal cord injury process. However, ad hoc selection and analysis of one or two genes cannot fully reveal the complex molecular biological mechanisms of spinal cord injury. The emergence of second-generation sequencing technology(RNA sequencing) has provided a better method. In this study, RNA sequencing technology was used to analyze differentially expressed genes at different time points after spinal cord injury in rat models established by contusion of the eighth thoracic segment. The numbers of genes that changed significantly were 944, 1362 and 1421 at 1, 4 and 7 days after spinal cord injury respectively. After gene ontology analysis and temporal expression analysis of the differentially expressed genes, C5ar1, Socs3 and CCL6 genes were then selected and identified by real-time polymerase chain reaction and western blot assay. The mRNA expression trends of C5ar1, Socs3 and CCL6 genes were consistent with the RNA sequencing results. Further verification and analysis of C5ar1 indicate that the level of protein expression of C5ar1 was consistent with its nucleic acid level after spinal cord injury. C5ar1 was mainly expressed in neurons and astrocytes. Finally, the gene Itgb2,which may be related to C5ar1, was found by Chilibot database and literature search. Immunofluorescence histochemical results showed that the expression of Itgb2 was highly consistent with that of C5ar1. Itgb2 was expressed in astrocytes. RNA sequencing technology can screen differentially expressed genes at different time points after spinal cord injury. Through analysis and verification, genes strongly associated with spinal cord injury can be screened. This can provide experimental data for further determining the molecular mechanism of spinal cord injury, and also provide possible targets for the treatment of spinal cord injury. This study was approved ethically by the Laboratory Animal Ethics Committee of Jiangsu Province, China(approval No. 2018-0306-001) on March 6, 2018.