程序公平对工作满意度、组织承诺的影响:工作不安全感的中介作用

目的:探讨程序公平对工作满意度、组织承诺的影响以及工作不安全感在其中的中介作用。方法:对来自国内某大型国营企业592名员工的关于程序公平、工作满意度、组织承诺和工作不安全感的问卷调查数据进行中介回归分析(Mediatingregressionanalysis)。结果:①程序公平和员工的工作满意度、组织承诺存在显著的正向关系,而和其工作不安全感之间存在显著的负向关系;②工作不安全感部分中介程序公平对整体工作满意度和组织承诺的影响。结论:通过改善程序公平,可以减少员工的工作不安全感,并进而增强其工作满意度和组织承诺。     

人格特征、自尊水平与航空兵部队人员心理健康的关系

目的:探讨航空兵部队人员人格特征、自尊水平与心理健康的关系。方法:运用EPQ、SES、SCL-90对443名航空兵部队人员进行调查。结果:神经质与SCL-90总均分成正相关(r=0.641,P<0.01);内外向与SCL-90总均分成负相关(r=-0.232,P<0.01);精神质与SCL-90总均分成正相关(r=0.398,P<0.01);自尊水平与SCL-90总均分成负相关(r=-0.381,P<0.01);神经质、精神质、自尊水平进入回归方程(P<0.001);神经质、精神质对心理健康有直接影响(效应系数分别为0.513和0.209);内外向、神经质通过影响自尊水平对心理健康具有间接效应(效应系数分别为0.216和-0.261)。结论:神经质、精神质和内外向是影响心理健康的因素,具有直接作用和间接作用两个方面;自尊是人格影响心理健康的中间环节。     

单细胞转录组测序技术及其在肿瘤研究中的应用

单细胞转录组测序是指对单个细胞的全部RNA进行逆转录、扩增和测序,再进行生物信息学分析的技术。自2009年Tang等基于高通量测序平台开始单细胞转录组测序之后,该技术发展突飞猛进。由于该技术能在单细胞水平诠释细胞的异质性,因此已广泛应用于生命科学各领域尤其是肿瘤等疾病研究。本文将主要综述单细胞转录组测序技术流程和技术发展,及其在肿瘤异质性、肿瘤转移、肿瘤微环境、肿瘤药物等研究中的应用进展。     

食管癌早癌内镜黏膜下剥离术后发生食管狭窄的危险因素分析及预测模型建立

目的 分析食管癌早癌内镜黏膜下剥离术(ESD)后发生食管狭窄的危险因素并建立相应的预测模型。方法 回顾性分析六安市人民医院消化内科于2018年6月至2021年12月收治的52例符合标准的早期食管癌患者病理和临床资料,根据患者术后是否发生食管狭窄分为狭窄组(n=15例)与非狭窄组(n=37例)。比较两组患者基线资料,分析筛选获得与术后发生食管狭窄有关的指标,再将有关指标纳入多因素logistic回归分析中得出影响术后发生食管狭窄的独立因素,并基于上述因素对应系数构建线性回归模型,采取受试者工作特征(ROC)曲线评估模型的预测价值,选择拟合优度检验评判预测值与实际值的一致性情况。结果 两组患者固有肌层损伤、病变环周范围、肿瘤浸润深度、剥离的纵径长度比较,差异有统计学意义(均P<0.05)。多因素logistic回归分析结果提示有固有肌层损伤(OR=4.310,95%CI:2.307～8.055)、病变环周范围>3/4环周(OR=12.820,95%CI:3.781～43.470)、肿瘤浸润深度进展至M3～SM1期(OR=6.482,95%CI:2.747～15.294)、长剥离...     

保留下颌骨舌癌联合根治术后复发部位及其因素的分析

作者报道６８例行保留下颌骨舌癌联合根治术病例,其中术后复发２３例,复发率为３３．８％。在这２３例中,其复发部位为：局部复发１５例,对侧颈淋巴结转移７例,肝转移１例。这表明术后局部复发病例数最多,占６５．２％（１５／２３）。此类复发病例再无拯救手术机会、预后极差。本文还着重分析了术后复发因素。认为术后复发与肿瘤原发部位及原发灶病变范围有关。     

Combined treatment of pelvic exenterative surgery and intra-operative pelvic hyperthermochemotherapy for locally advanced rectosigmoid cancer: Report of a case

A huge rectosigmoidal cancer which extended into the urinary bladder in a 64-year-old man is herein described. The tumor occupied the pelvic and lower abdominal cavities, while the rectosigmoid was totally obstructed. No hepatic or pulmonary metastasis was evident. The ventral and flank sides of the peritoneum in the right lower abdomen, right common iliac vessels, bilateral ureters, terminal ileum, cecum, ascending colon, and urinary bladder were all directly invaded by the tumor, but the aorta, sacrum, and lower rectum were free of cancer. Consequently, an anterior pelvic exenteration was carried out along with an ileal conduit and a right hemicolectomy. Immediately after the exenteration, intra-pelvic hyperthermochemotherapy was performed using a 46–47°C perfusate containing 40 g/ml of mitomycin C (MMC) and 200 g/ml of cisplatin (CDDP), for 90 min, in an attempt to prevent any further local recurrence. A right hemicolectomy and a permanent colostomy were done simultaneously with the hyperthermia treatment. After an uneventful postoperative course, the patient was prescribed adjuvant chemotherapy, i.e., two administrations of 17 mg/m² and 21 mg/m² of MMC, and ten doses of 710 mg/m² of 5-fluorouracil (5-FU) followed by five doses of 535 mg/m² of 5-FU. At the time of this writing, the patient is still alive without recurrence at 21 months after surgery.     

Radioimaging of human glioma xenografts with 123I labeled monoclonal antibody G-22 against glioma-associated antigen

Summary Monoclonal antibody (MCA) G-22 is directed against a human glioma-associated surface antigen. Its availability for the radioimmunodetection of human glioma was analyzed by utilizing the xenografts in athymic mice. Nude mice with subcutaneous grafts of U251-MG or U251-SP glioma received intravenous administration of ¹²³I or ¹³¹I labeled F(ab)2 fragment or whole immunoglobulin. Results of radioimaging revealed that ¹²³I-labeled antibody was better than the ¹³¹I-labeled. It was also noted that administration of ¹²³I-labeled F(ab)2 fragment of G-22 MCA enabled the imaging of human glioma xenografts weighing 80–650 mg after 48 hours. When biodistribution of ¹²³I MCA was compared between G-22 and control antibodies, the percentages of dose/g in tumors were 5.228–1.799 at 30 hours and 4.112–1.132 at 48 hours with G-22 and they were 4.164–1.248 and 0.314–0.142 with control. The tumor/blood ratio until 72 hours after injection was constantly above 1 with G-22 and less than 1 with control antibody. These results indicate the potential usefulness of G-22 MCA for the radioimmunodetection of human gliomas.     

宫内胎肝细胞移植形成血小板GPⅡb Bak a/b嵌合体的研究

目的　探讨宫内胎肝细胞移植是否形成人工血小板杂合子嵌合体 ,评估其在治疗血小板无力症的临床应用前景。方法　选择血小板膜GPⅡbBaka/b(GPⅡb异亮氨酸 84 3丝氨酸多态性 )作为遗传标记 ,采用等位基因特异引物PCR和FOKⅠ限制性内切酶消化技术从 4 2名引产妇筛选一例纯合子GPⅡbBaka/a作为供者 ,一例纯合子GPⅡbBakb/b作为受者 ,制备供者胎肝细胞 ,取 4ml(2 2× 10 5细胞 )在B超引导下通过脐静脉穿刺输给受者。结果　移植后 2 1天 ,用PCR FOKⅠ消化技术检测引产后受者外周血DNA和血小板RNA ,发现已形成Baka/b嵌合体。结论　我们认为宫内胎肝细胞移植可能提供一种治疗血小板无力症和其他遗传性疾病的方法。     

胰岛素与低血流缺血刺激犬心肌GLUT4基因表达呈相加作用

目的：观察胰岛素与低血糖缺血刺激心肌葡萄糖转运子4（GLUT4）基因是否呈相加作用。方法：采用North-ernblot法分析心肌GLUT4mRNA,采用免疫印迹法分析心肌GLUT4基因表达。结果：输注胰岛素使局部低血流心肌GLUT4mRNA和GLUT4基因表达增加2.3-2.5倍,同时伴随心肌葡萄糖摄取明显增多达4倍.结论:胰岛素与低血流缺血刺激心肌致GLUT4mRNA和GLUT4表达呈相加作用,其结果使GLUT4数量明显增加,进而使心肌葡萄糖摄取量增加,此机制在缺血心肌能量代谢过程中起着重要的代谢性调节作用。     

大白鼠感染广州管圆线虫后各脏器的病理变化观察

目的：观察动物感染广州管圆线虫（AC）后各脏器的病理变化。方法：用光镜及电镜观察大白鼠受感染后心、肺、脑、肝、肾及脾等脏器的形态改变。结果：主要的靶器官是脑、心、肺。出现虫体栓塞、虫卵结节形成,实质细胞损伤坏变,伴随炎症反应与继发感染等。脾、肾、肝无明显病理变化。结论：广州管圆线虫对大白鼠的损伤主要是由虫子的移行和产卵发育刺激而致,其可引起肺心脑的栓塞和肉芽肿性虫卵结节及炎症。严重的肺动脉栓塞、广泛的虫卵结节及继发肺感染是主要的致死原因。