An adenosine triphosphate bioluminescence assay for detecting the number of living cells]

The method for detecting the number of living cells was studied. Using an adenosine triphosphate (ATP) bioluminescence assay, the present authors reported a perfect linear relationship between lg ATP concentrations and lg luminescence counts (r = 0.9963) as well as a relationship between lg number of cells and lg ATP luminescence counts (r = 0.9922). The detectable cells ranged from 10(2) to 10(6) cells/ml, the coefficients of variation 1-3%. This method is simple, accurate and sensitive and has a high reproducibility.     

弥漫性脾肿大脾血管的多普勒超声研究

多普勒超声是检查血流动力的一种理想方法 ,具有无创、安全、简便易行等优点。我们应用多普超声对各种常见弥漫性脾肿大患者脾动脉、脾静脉进行血流动力学测定 ,旨在发现其特征 ,为弥漫性脾肿大的病因鉴别诊断提供参考依据。1　资料与方法1.1　观察对象本研究检查弥漫性脾肿大患者 81例 ,男 55例 ,女 2 6例 ,年龄 16～ 6 5岁 ,均系我院住院患者 ,分为六组 ,血液病组 2 0例 ,肝硬化 2 0例 ,急性肝炎组 10例 ,慢性肝炎组 13例 ,伤寒组 7例 ,疟疾组 11例。对照组 32例 ,男 2 0例 ,女 12例 ,年龄 19～ 6 2岁 ,均系我院耳鼻喉科同期住院患者和来…     

Partial Sequence Analysis of the Genome of Human Herpesvirus 7 YY5 Isolated from Saliva Samples

Ｈｕｍａｎｈｅｒｐｅｓｖｉｒｕｓ 7(ＨＨＶ 7)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｒｅｃｅｎｔｌｙｄｉｓｃｏｖｅｒｅｄｍｅｍｂｅｒｏｆｔｈｅｈｅｒ ｐｅｓｖｉｒｕｓｆａｍｉｌｙ .Ｉｔｗａｓｆｉｒｓｔｉｓｏｌａｔｅｄｆｒｏｍａｃｔｉｖａｔ ｅｄＣＤ4 Ｔｃｅｌｌｓｆｒｏｍｐｅｒｉｐｈｅｒａｌｂｌｏｏｄｍｏｎｏｎｕ ｃｌｅａｒｃｅｌｌｓ (ＰＢＭＣｓ)ｏｆａｈｅａｌｔｈｙｉｎｄｉｖｉｄｕａｌ[1] ,ａｐａｔｉｅｎｔｗｉｔｈｃｈｒｏｎｉｃｆａｔｉｇｕｅｓｙｎｄｒｏｍｅ(ＣＦＳ) [2 ] ,ａｎｄｆｒｏｍｓａｌｉｖａｏｆｈｅａｌ…     

异丙酚氯胺酮混合液静脉麻醉

选择 40例 ASA ～ 级病人行异丙酚氯胺酮 (1∶ 2 )复合静脉麻醉。结果麻醉诱导后血压、心率与麻醉前相比无明显变化 ,2 0 %病人出现一过性 SPO2 下降 (<94% )。麻醉诱导苏醒快 ,满意率高 ,恢复期无精神症状。表明异丙酚可控制氯胺酮的心血管兴奋作用和恢复期精神症状 ,氯胺酮可减轻异丙酚的心血管抑制作用。两者配伍是一种较好的短效静脉麻醉方式 ,但仍存在呼吸抑制作用 ,应引起注意。     

职业人群不健康行为生活方式与高尿酸血症的关系及高血压、血脂异常的效应修饰作用

目的 探索不健康行为生活方式与高尿酸血症的关系,以及高血压、血脂异常的效应修饰作用,为预防高尿酸血症提供理论依据。方法 采用横断面调查研究设计,基于2021年10-12月来自四川省、贵州省28个地级市和重庆市33个区（县）中国铁路成都局集团有限公司的西南职业人群队列基线数据,通过问卷调查、体格测量及实验室生化检测收集研究对象的人口学特征、行为生活方式、慢性非传染性疾病患病情况。不健康行为生活方式得分根据吸烟、饮酒、膳食模式、体力活动和低体重/超重状况进行评分,分值越高不健康行为生活方式越多。采用多因素logistic回归模型分析不健康行为生活方式评分、吸烟状况、饮酒状况等与高尿酸血症的关系,采用分层分析探索高血压等疾病对不健康行为生活方式与高尿酸血症之间关系的修饰效应。结果 共纳入11 748名研究对象,高尿酸血症患病率为34.4%。多因素logistic回归分析显示,现在吸/既往吸烟、现在饮/既往饮酒及BMI异常是高尿酸血症患病的危险因素,不健康行为生活方式对高尿酸血症患病风险呈现累积效应,随着得分的升高,高尿酸血症患病风险升高,OR值由1.64（95%CI：1.34~2.00）上升至2.89（95%CI：2.39~3.50）。分层分析结果显示,在高血压及血脂异常人群中,不健康行为生活方式对高尿酸血症患病风险影响更大。结论 多种不健康行为生活方式的共存会升高高尿酸血症患病风险,这一效应在高血压、血脂异常人群中更明显。及时纠正不健康行为生活方式,并控制高血压和血脂异常,降低患高尿酸血症的风险。     

A novel cytoplasmic protein with RNA-binding motifs is an autoantigen in human hepatocellular carcinoma

In hepatocellular carcinoma (HCC), autoantibodies to intracellular antigens are detected in 30-40% of patients. Patients with chronic hepatitis or liver cirrhosis develop HCC, and when this occurs, some patients exhibit autoantibodies of new specificities. It has been suggested that these novel autoantibody responses may be immune system reactions to proteins involved in transformation-associated cellular events. One HCC serum shown to contain antibodies to unidentified cellular antigens was used to immunoscreen a cDNA expression library, and a full length cDNA clone was isolated with an open reading frame encoding 556 amino acids with a predicted molecular mass of 62 kD. The 62-kD protein contained two types of RNA-binding motifs, the consensus sequence RNA-binding domain (CS-RBD) and four hnRNP K homology (KH) domains. This protein, provisionally called p62, has close identity (66-70%) to three other proteins at the amino acid sequence level, and all four proteins may belong to a family having CS-RBD in the NH2-terminal region and four KH domains in the mid-to-COOH- terminal region. The homologous proteins are: KH domain-containing protein overexpressed in cancer (Koc); zipcode binding protein, a protein which binds to a conserved nucleotide element in chicken beta-actin mRNA (ZBP1); and a protein which binds to a promoter cis element in Xenopus laevis TFIIIA gene (B3). p62 protein is cytoplasmic in location, and autoantibodies were found in 21% of a cohort of HCC patients. Patients with chronic hepatitis and liver cirrhosis, conditions which are frequent precursors to HCC, were negative for these autoantibodies, suggesting that the immune response might be related to cellular events leading to transformation. However, the possible involvement of p62 autoantigen as a factor in the transformation process remains to be elucidated.     

电热手术刀在妇产科手术中的应用

目的：观察新型电热手术刀在妇产科手术中的应用效果。方法：对６５ 例需手术的妇产科病人,用新型电热手术刀做手术,与同期用普通手术刀（２５ 例） 和高频电刀（２０ 例） 做手术进行比较。结果：电热手术刀可在锋利切割组织的同时快速止血,止血作用类似于高频电刀;和普通手术刀相比,电热手术刀能明显减少出血量,加快手术速度,且无脂肪液化,无刀片粘连,切口愈合良好,热损伤轻微。结论：电热手术刀结合了普通手术刀和高频电刀的优点,适合在妇产科手术中推广使用。     

急性白血病化疗后外周血粒/单祖细胞的扩增作用

采用单层琼脂体外细胞培养法,对32例急性非淋巴细胞白血病患者在完全缓解后1~3周时外周血粒／单祖细胞（CFU－GM）的动态变化情况进行了比较观察。患者分4组,分别采用DA（柔红霉素、阿糖胞苷）、HA（三尖杉酯碱、阿糖胞苷）、AA（阿克拉霉素、阿糖胞苷）、MA（米托蒽醌、阿糖胞苷）4种不同化疗方案治疗。结果表明：4种化疗方案对外周血干细胞（PBSC）均具有一定的扩增作用。外周血CFU－GM产率的高峰时间为诱导化疗达到完全缓解后2~3周时,高峰出现平均为16．5d,是采集PBSC的最佳时机。不同化疗方案对CFU－GM的扩增效果有一定的差异。本研究结果显示DA方案的扩增作用显著高于其它方案。