An Integrated Technique for Identification of Differential Genes Expressed in Patients with Cancer

Summary: To develop a method for identification of differential gene expression between different cell populations, several convenient techniques of molecular biology, including subtractive hybridization, suppression PCR, T/A cloning and sequencing, were used to identify genes expressed differentially in CD45^- and CD45^- cells isolated from U266 cell line of multiple myeloma. Our results showed that the levels of abundant genes scale down 20 times through subtractive hybridization.Plasmid DNA from CD45^- cell clones was hybridized with forward or backward cDNA probes synthesized from CD45^- and CD45 cells, respectively. A few of differentially expressed genes reconfirmed by RT-PCR were identified from 500 expressed clones of CD45^- cells. It is concluded that a strategy for gene expression identification developed from conventional molecular biological methods can be used in different laboratories.     

体质指数正常人群中的代谢综合征患病情况

目的 了解体质指数（BMI）正常人群多代谢异常与代谢综合征（MS）的患病情况。方法 选取2016年1月—2017年12月健康体检人群为研究对象,以2004年中华医学会糖尿病学分会制订的MS诊断标准,符合纳入标准的正常BMI对象共5 781名（男3 069名,女2 712名）。根据BMI的四分位数将调查对象分成Q1～Q4组计算性别、年龄别MS的患病率。结果 5 781名对象的MS患病率为12.71％（男性9.22％,女性16.67％,χ2 = 71.92,P＜0.001）。专业技术人员的MS患病率较其它职业人群显著增高（χ2 = 19.76,P = 0.001）,低学历人群的MS患病率较高学历人群显著增高（χ2 = 10.79,P = 0.005）。男性随BMI升高（Q1～Q4）MS患病率由3.21％增至17.54％（χ2 = 87.11,P＜0.001）;女性（Q1～Q4）MS患病率由7.32％增至29.78％（χ2 = 147.66,P＜0.001）。男性各个BMI组MS患病率均低于女性（Q1:3.21% vs 7.32%,χ2 = 10.31,P＜0.001;Q2:6.35% vs 10.26%,χ2 = 8.64, P＜0.001;Q3:9.72% vs 19.27%,χ2 = 27.39, P＜0.001;Q4:17.54% vs 29.79%,χ2 = 28.11,P＜0.001）。男性随年龄升高（≤40岁～≥60岁）MS患病率由3.43％增至13.15％（χ2 = 67.09,P＜0.001）、女性（≤40岁～≥60岁）MS患病率由10.72％增至24.25％（χ2 = 54.43,P＜0.001）;随BMI升高（Q1～Q4）,伴有MS组分异常的患病率由28.51％增至40.56％（χ2 = 77.39,P＜0.001）。结论 BMI正常人群仍有一定多代谢异常和MS患病率,要注意BMI正常人群的代谢性健康风险管理。     

整合常规技术探索肿瘤差异表达基因

目的建立一种简单实用的、探索肿瘤差异表达基因的方法.方法从骨髓瘤细胞株U266中分离出CD45 和CD45－细胞,结合应用减法杂交、抑制性PCR、T/A克隆、测序等技术,寻找CD45 和CD45－细胞间的差异表达基因.结果减法杂交可缩减约20倍的高丰度表达基因,意即低丰度表达基因富聚约20倍. 用正向或负向减法探针,分别和来源于CD45 细胞克隆的质粒DNA杂交,筛选500个表达克隆,发现了几个差异表达基因,并经RT-PCR证实.结论采用常规分子生物学方法建立起来的综合技术,可以用来研究肿瘤性疾病的差异表达基因,且简单实用,能在普通分子生物学实验室开展.     

抗角蛋白抗体及类风湿因子对类风湿性关节炎的诊断价值

类风湿性关节炎 (RA)是一种常见病 ,如不及时诊治 ,致残率较高。为提高RA的诊断率 ,我们选择本院 85例RA、5 9例其他结缔组织病和 40名健康人 ,检测血清抗角蛋白抗体(AKA)与类风湿因子 (RF)并进行比较 ,分析其对RA的诊断价值。临床资料1.对象 :RA患者 85例 ,符合 1987年美国风湿病学会拟订的RA分类标准。男性 12例 ,女性 73例 ,年龄 12～ 72岁 ,平均年龄 49岁 ;其他风湿性疾病 5 9例 ,其中系统性红斑狼疮 2 9例 ,强直性脊柱炎 10例 ,骨关节炎 10例 ,混合性结缔组织病 3例 ,多发性肌炎 3例 ,干燥综合征 1例 ,结节性红斑 1例 ,白塞氏病…     

健康体检人群幽门螺杆菌感染与白蛋白尿的相关性

目的探讨健康体检人群幽门螺杆菌感染与白蛋白尿的相关性。方法本研究为横断面研究, 以2021年1至12月在武汉同济医院体检中心进行过13C呼气试验的成年健康体检者为研究对象, 收集患者人口学信息、既往疾病史等一般资料以及体格测量指标、血生化指标等特征, 采用多因素分析方法探讨幽门螺杆菌感染与白蛋白尿的相关性。结果共纳入研究对象30 311例, 其中男性17 123例, 女性13 188例;年龄(44.51±12.17)岁;幽门螺杆菌感染阳性率为27.3%。幽门螺杆菌感染阳性组白蛋白尿患病率为6.7%, 阴性组的白蛋白尿患病率为6.1%(P=0.031);在调整了性别、年龄、糖尿病及高血压病等混杂因素后, 幽门螺杆菌感染与白蛋白尿患病风险呈正相关[OR=1.133(95%CI:1.018～1.261), P=0.022]。结论健康体检人群幽门螺杆菌感染与白蛋白尿患病风险相关。     

血清铁蛋白检测在成人Still病诊断和治疗中的临床价值

目的探讨血清铁蛋白在成人Still病(AOSD)诊断和治疗中的价值。方法本组入选的24例AOSD住院病人均符合日本Yam aguch i诊断标准。回顾性分析患者的临床特征、生化指标(主要为ALT)、血沉(ESR)、血清铁蛋白和治疗措施,并对血清铁蛋白与ALT、ESR进行了相关性分析。结果24例患者中男7例,女17例,年龄12~51岁,平均年龄27.9岁±10.3岁。主要临床表现为发热,病程平均148.4天±246.4天。血清铁蛋白24.8~74700μg/L(6242.6±14888.0),70.8%的患者较正常值有8倍以上的增高,但血清铁蛋白的增高与ALT和ESR之间没有相关性(P>0.05)。24例患者均对糖皮质激素(GCs)治疗有效,SF水平越高者所需GCs剂量越大。结论检测血清铁蛋白对诊断AOSD具有重要的临床意义,其浓度的检测有助于指导临床治疗,而且其水平增高可能与病情活动度有关。     

氨苯砜过敏反应综合征一例并文献复习

目的探讨氨苯砜(DDS)过敏反应综合征的临床特征和治疗方法。方法报告1例氨苯砜过敏反应综合征并复习相关文献。结果本例患者服用2周DDS后出现发热、皮疹、肝脾肿大、淋巴结肿大、肝损害、异型淋巴细胞增多和低丙种球蛋白血症,确诊为氨苯砜过敏反应综合征,经糖皮质激素治疗效果显著。结论氨苯砜过敏反应综合征的临床特征为发热、皮疹、淋巴结肿大、肝损害和溶血性贫血等。根据DDS的用药史,排除微生物感染和其它相关疾病,可诊断本病。治疗上应尽快使用足量的糖皮质激素并逐步减量维持治疗1个月以上。     

99Tc-亚甲基二膦酸盐对胶原诱导性关节炎大鼠滑膜及软骨凋亡相关因子的影响

Objective Collagen induced arthritis (CIA) rats is an animal model of human rheuma-toid arthritis (RA). It is widely used in research of the pathogenesis and the therapeutic targets of RA. This paper was to investigate the therapeutic action of 99Tc-methylene diphosphonic acid (MDP) on CIA rats and its effects on the expression of apoptosis associated factor bcl-2 and bax in synoviocytes and articular chon-drocytes. Methods CIA rat models were carried out by subcutaneous injection with bovine collagen Ⅱ and incomplete Freud's adjuvant. Rats were divided into four groups: control group, CIA model group (the CIA rats were infused with physiological saline via tail vein daily), 99Tc-MDP group (the C1A rats were injected with 99Tc-Mi)P 0.04 μg 99Tc/kg via tail vein daily) and methotrexate (MTX) group (the CIA rats were in-jected with MTX 1 mg/kg via tail vein weekly). The signs of arthritis were evaluated by arthritis index (AI) scores. Immunohistochemistry was performed to detect the expression of bcl-2 and bax in synoviocytes and articular chondrocytes. SPSS 13.0 was used for data analysis. Results (1) The signs of arthritis, AI scores and pathological changes of arthrosynovitis in CIA rats were significantly improved by 99Tc-MDP orMTX. (2) The expression of bcl-2 and box in the synoviocytes of CIA model group [(39.30 ± 0.53) %, (27.37 ±2.45)%] was significantly increased compared with control group [(7.56 ± 1. 18)% , (6.14 ± 1.71) % ; q = 46.27, 24.57, all P < 0.001]. In the synovioeytes of 99Tc-M DP group and MTX group, the level of bcl-2 was remarkably decreased [(30.24 ± 2.09) %, (27.25 ± 3.33) %] compared with CIA model group (q = 13.20, 17.56, all P <0.001), while the level of bax was slightly increased and the ratio of bcl-2/bax was significantly decreased. (3)The expression level of bcl-2 and bax in the articular chondro-cytes of CIA model group [(20.20 ± 2.78) %, (36.40 ± 1.67) %] was significantly higher than control group [(9.91±4.09)%, (6.71 ±3.50)%; q=10.51, 37.01, allP<0.001]. Compared with CIA model group, the expression level of bcl-2 in articular chondrocytes of 99Tc-MDP group [(26. 58 ± 2. 52) %] and MTX group [(27.06 ± 1.92) %] was remarksbly increased [(24.26 ± 2.75) %, (23.53 ± 0.74) % ; q = 6.53, 7.01, all P < 0.001]. And the expression level of bax was significantly decread (q = 15.12, 16.04, all P <0. 001) and the ratio of bcl-2/bax was significantly increased. Conclusions The ab-normal expression of apoptosis associated factor bcl-2 and bax in synoviocytes and articular chondrocytes was closely related to the occurrence and progression of signs in CIA rats. 99Tc-MDP could improve the signs of arthritis, meanwhile regulate the expression of bcl-2 and bax in synoviocytes and articular ehondrocytes, suggesting that one of the therapeutic mechanisms of 99Tc-MDP might be related to stimulated synoviocytes apoptosis and reduced articular chondrocytes apoptosis.     

系统性红斑狼疮并心脏瓣膜病变的诊疗体会

系统性红斑狼疮(SLE)的特点为多脏器损害,伴有异常的免疫反应。心脏瓣膜病变是SLE严重的并发症。本文报告1例SLE合并心脏瓣膜病变患者的临床资料和治疗情况,并复习有关文献。临床资料患者,女,23岁,因“咳嗽、咳痰27d,伴发热20余天”于2006年2月2日入院。患者于27d前无明显诱因出现咳嗽、咳痰,为白色粘痰,量少,未予以诊治。约1周后出现不规则发热、畏寒,体温波动在39.0~40.0℃之间,伴头晕、乏力,仍有咳嗽、咳痰,无胸痛、咯血、心悸、胸闷、尿急、尿频、尿痛、腹痛、腹泻等不适,至当地医院就诊,血常规示WBC1.7×109/L,L41.6%,N50.2%,RB…