C1q and anti-C1q antibody levels are correlated with disease severity in Chinese pediatric systemic lupus erythematosus

The aim of this study was to measure the level of serum complement lq(Clq) and anti-C1q antibodies (ClqAb) in pediatric systemic lupus erythematosus (PSLE), and then analyze the correlation between the levels of serum Clq and ClqAb with disease activity and kidney damage. We investigated 90 PSLE patients, including 43 patients in active stage and 47 patients in remission. Our results showed that the level of serum Clq of PSLE patients was significantly lower than the level of healthy children and children with other rheumatic diseases. In contrast, the level of ClqAb of PSLE patients was significantly higher than the other groups. The level of serum Clq was negatively correlated with systemic lupus erythematosus (SLE) disease active index (SLEDAI) and the level of ClqAb was positively correlated with SLEDAI and kidney damage. The sensitivity of using ClqAb levels to diagnose PSLE was 95.6% and the specificity was 97.5%. 93.0% SLE patients who had high C1qAb levels also showed kidney damage. Therefore, the levels of C1q and C1qAb in serum reflect the disease severity of SLE. Decreased Clq and increased C1qAb is closely correlated with lupus nephritis (LN) in children and may have diagnosis values for child LN.     

抗肿瘤坏死因子相关凋亡诱导配体受体2嵌合抗体表达载体的构建、表达及其抗肿瘤活性分析

目的:构建抗人肿瘤坏死因子相关凋亡诱导配体(TRAIL)受体2(死亡受体5,DR5)的人-鼠嵌合抗体表达载体,获得稳定表达该嵌合抗体的细胞株,并分析嵌合抗体的抗肿瘤活性。方法:采用DNA重组技术,扩增抗人DR5的鼠源单克隆抗体(mAb)AD5-10的重链(HC)、轻链(LC)可变区基因片段,并将其分别插入含有人IgG重链、轻链恒定区基因的真核表达载体RpCI-neo,以重、轻链表达质粒共转染中国仓鼠卵巢细胞(CHO),筛选稳定表达抗人DR5嵌合抗体(hmAD5-10)的重组细胞。采用Western blot和间接ELISA检测嵌合抗体的表达量及其与抗原DR5的结合活性。采用MTS比色法检测嵌合抗体的生物学活性。并对重组细胞株进行无血清培养驯化。结果:获得了2株稳定表达嵌合抗体的重组细胞株CHO-A5和CHO-B11,抗体的表达水平分别为(0.36±0.11)mg/L和(0.16±0.01)mg/L,嵌合抗体与DR5有较好的结合活性,对体外培养的人T淋巴细胞白血病细胞SVT35有显著的杀伤作用。结论:在真核细胞中表达了具有生物学活性的抗DR5的人-鼠嵌合抗体,为其应用于肿瘤治疗研究奠定了基础。     

双氢青蒿素哌喹片治疗缅甸拉咱市恶性疟的疗效和安全性评价

目的评价双氢青蒿素哌喹片治疗中缅边境地区缅甸拉咱市恶性疟的疗效和安全性。方法 2008年9～12月,在缅甸拉咱市及隶属于该市的4个自然村开展临床试验,选择2～60岁、原虫密度≥250个/μl血、单纯恶性疟现症病例,用双氢青蒿素哌喹片(每片含双氢青蒿素40 mg,磷酸哌喹320 mg)2天4次疗法治疗,总剂量因体重而异,如50 kg体重患者总剂量8片均分4次口服,每次2片,每次间隔8～10 h,按体重剂量表给药。于服药当天、服药后的第1、2、3、7、14、21和28天随访观察患者症状、原虫密度、体温和药物不良反应。用WHO抗疟药治疗效果分类、退热时间、无性体原虫转阴时间和配子体转阴率评价其疗效。结果共64例完成全程随访,100%完全临床原虫治疗成功,平均退热时间为(22.5±8.2)h,无性体原虫转阴时间中位数为30.0 h[(17.1～168.2)h];服药后第3天和第7天无性体原虫转阴率和退热率分别为(93.8%、100%)和(100%、100%),服药后第28天配子体转阴率为75.0%;仅7例出现轻度不良反应,不良反应率为9.9%(7/71)。结论双氢青蒿素哌喹片治疗缅甸拉咱市恶性疟安全有效。     

Effects of cyclooxygenase-2 on human esophageal squamous cell carcinoma

AIM:To study the relationship between the cyclooxy-genase(COX)-2 gene and the proliferation and apopto-sis of esophageal squamous carcinoma EC109 cells.METHODS:The techniques of RNA interference(RNAi)and cell transfection,as well as the levels of oncogenic-ity in nude mice,were used to study the role of COX-2 in the esophageal squamous carcinoma cell(ESCC)line EC109.Following RNAi and transfection,Western blot-ting analysis was used to determine the expression of the COX-2 protein.The 3-(4,5-dimethylthiazol...     

Endovascular repair of aortoiliac aneurysm with a hybrid technique to preserve pelvic perfusion

Endovascular aneurysm repair (EVAR) has been proven to be an effective and safe technique for abdominal or iliac artery aneurysm. However, for aneurysms extending to both iliac bifurcations, routine EVAR will occlude both internal iliac arteries (IIAs), which may increase the risk for pelvic ischemia. New endovascular techniques have been developed to preserve the pelvic perfusion in EVAR for such situation. This article reports an endovascular repair of an aortoiliac aneurysm with an external iliac artery (EIA) to the IIA endograft to preserve the pelvic perfusion. First, an endograft was advanced into the left IIA under the help of an inflated aortic balloon. Coils were deployed to embolize the distal type-1 endoleak from the tunnel around the endograft. and an aortouniiliac endograft and an iliac extension were deployed below the renal arteries extending to the right EIA. Finally, a right-to-left femoro-femoral artery bypass was constructed. Angiography at completion and computed tomography after 6 months demonstrated patency of all grafts and complete exclusion of the aneurysm without any endoleak. Endovascular repair with an EIA-to-IIA endograft to preserve the pelvic inflow is a feasible and effective technique for aortoiliac aneurysms. Coil embolization might be an option to repair the distal type of endoleak. The balloon assisted U-turn technique may help advance the endovascular device over a sharp-angled vessel bifurcation.

     

应用改良体细胞基因敲入技术内源标记跨膜丝氨酸蛋白酶RHBDDl的研究

目的应用改良的体细胞基因敲入技术将标签序列靶向敲人目的基因。方法设计引物并构建RHBDDI的打靶载体,经过腺相关病毒包装、感染、新霉素筛选和鉴定等步骤获得含有新霉素抗性的阳性单克隆细胞株,最后通过ere病毒感染和筛选获得RHBDDI内源敲人FLAG和SBP双标签的HCTI16结直肠癌细胞株。结果经过包装病毒感染与筛选验证后得到6个打靶阳性克隆;进一步经ere病毒感染与筛选后得到2株去除新霉素抗性标记的阳性细胞克隆;通过Western blotting实验证明RHBDDl-FLAG-SBP融合蛋白的表达。结论通过改良的体细胞基因敲入技术成功构建跨膜丝氨酸蛋白酶RHBDDl内源敲入FLAG和SBP双标签的HCTll6结直肠癌细胞株。     

Differences in heart stroke volume between Han and Korean-Chinese nationalities and correlative factors

Objective To compare the differences in stroke volume (SV) and stroke volume index (SI) between Han and Korean‐Chinese and to investigate the correlated risk factors.Methods A total of 1 647 Han and 876 Korean‐Chinese aged 10‐80 years were investigated.SV,SI,cardiac output,cardiac output index,heart rate (HR),systemic vascular resistance (SVR),systemic vascular resistance index (SVRI),and blood pressure were measured.Results SV/SI values in Korean‐Chinese were lower than those in the Han of the same sex and...     

非洲爪蟾驱动蛋白样蛋白2靶蛋白C'末端SBP-3×Flag标记的HCT 116结直肠癌细胞模型的建立

目的建立非洲爪蟾驱动蛋白样蛋白2靶蛋白(TPX2)C'末端SBP-3×Flag标记的HCT116结直肠癌细胞模型。方法 PCR扩增同源臂,构建TPX2的腺相关病毒打靶载体,包装病毒后打靶HCT116结直肠癌细胞,G418和PCR筛选获得含有新霉素抗性基因的阳性细胞株,最后通过Cre病毒感染去除抗性基因,并用PCR方法筛选获得TPX2C末端SBP和3×Flag内源性双标签的HCT116结直肠癌细胞株。结果筛选获得2个含有新霉素抗性基因的细胞株,随后经Cre病毒感染得到去除新霉素抗性基因的阳性细胞克隆,并经Western blot检测验证了SBP-3×Flag基因的敲入。结论成功建立了TPX2 C'末端SBP-3×Flag标记的HCT116结直肠癌细胞模型。