Expression of core?binding factor alpha 1 and collagen Ⅱ in patients with chronic kidney disease stage 5

Objective To study the relationship between the medial artery calcification and expression of core?binding factor alpha 1 (Cbfα?1) and collagen Ⅱ (ColⅡ) in chronic kidney disease(CKD) stage 5 patients. Methods Pieces of radial arteries were taken from 40 patients with CKD stage 5 during internal arteriovenous fistula operation. Ten patients with subtotal gastrectomy and normal renal function were chosen as control. The vessels were examined for calcification by von Kossa stain and for the presence of Cbfα?1 and ColⅡ by immunohistochemistry. According to von Kossa stain, CKD stage 5 patients were divided into no calcification group, mild?moderate calcification group and severe calcification group. Other related factors including serum calcium,phosphate, intact parathyroid hormone (iPTH), C?reactive protein (CRP), triglyceride(TG), cholesterol(TC) and low?density lipoproteins(LDL) were also detected. Results Seventeen (42.5%) of CKD Stage 5 patients showed vascular calcification, while calcification was not found in controls. Most calcification occurred in medial layer．Positive immunohistochemical staining of core?binding factor and ColⅡ was found in the smooth muscular cell plasma of medial layer in the vessels with calcification. However, above positive staining was also observed in 78.3% of no calcification group. But there was little staining in control group. Positive staining score of Cbfα?1 and ColⅡ in severe calcification group was significantly higher than that in no calcification group. Same findings were obtained in mild?moderate calcification group, but the difference between them was not statistically significant. CRP and Ca×P were positively correlated with staining score of Cbfα?1 and ColⅡ. Serum phosphate was positively correlated with Cbfα?1 (r=0.786, P<0.01) and ColⅡ (r=0.785, P<0.01) respectively． Conclusions 42.5% of CKD stage 5 patients in our group shows vascular calcification, which occurrs mainly in medial layer. High expression of Cbfα?1 and ColⅡ can be observed in vascular calcification of radial arteries, which is earlier than vascular histological changes. Cbfα?1 and ColⅡ may be involved in the development of vascular calcification.     

Prognostic significance of serum immunoglobulin pareprotein in chronic lymphocytic leukemia

Objective To investigate the incidence of serum immunoglobulin (Ig) paraprotein in chronic lymphocytic leukemia(CLL) ,and to explore its clinical associated laboratory features and prognostic implication. Methods Serum protein electrophoresis and immunofixation     

宫腔镜检查在复发性流产患者诊治中的作用

目的探讨宫腔镜检查在复发性流产(recurrent spontaneous abortion,RSA)患者中的诊治作用。方法 2009年1月至2013年5月对苏州大学附属第二医院就诊的95例RSA患者进行宫腔镜检查,对其检查结果进行分析。结果 95例RSA患者中,子宫腔粘连70例(73.68%),子宫内膜息肉12例(12.63%),子宫腔畸形7例(7.37%),子宫内膜炎3例(3.16%),子宫黏膜下肌瘤1例(1.05%)。研究发现末次流产距就诊时限与宫腔粘连程度有明显相关性(P<0.05),时间间隔越长,宫腔粘连的程度越严重;自然流产次数与宫腔粘连程度没有明显相关性(P>0.05)。结论宫腔镜检查具有直观、操作简单、安全高效、并发症少等优点,在RSA的诊治中具有重要意义。     

大鼠急性脊髓损伤时IκBα的表达及其意义

目的 研究大鼠急性脊髓损伤时抑制蛋白α(IkBa)表达变化规律。方法 将60只SD大鼠随机分为两组：损伤组48只大鼠，行脊柱椎板切除及脊髓打击术。对照组12只大鼠，仅行椎板切除术。应用免疫组织化学及Western blot分别测定脊髓细胞浆内IkBα的表达变化情况。免疫组织化学以细胞浆出现棕黄色颗粒为阳性结果，Western blot以醋酸纤维素膜上出现棕色条带为阳性结果。结果 在损伤后1h，IkBα表达开始下降，12h降到最低点，损伤后24h表达开始回升，5d逐步恢复正常。结论 IkBα活性变化可作为急性创伤性脊髓损伤时炎症反应程度的一项观测指标，通过抑制IkBα磷酸化降解环节，成为抑制炎症反应的新途径。     

黄芩苷对脂多糖诱导牙周膜成纤维细胞表达炎症因子的影响

【】目的：探讨黄芩苷对脂多糖促人牙周膜成纤维细胞炎症因子表达的影响。方法：将培养后的人牙周膜成纤维细胞用不同浓度的黄芩苷处理,CCK8实验观察不同浓度黄芩苷对人牙周膜成纤维细胞的细胞毒性。将培养后的人牙周膜成纤维细胞分为空白对照组、LPS组、黄芩苷组和LPS+黄芩苷组。空白对照组仅加入2%胎牛血清的培养液;LPS组加入加入100μg/mLLPS ;黄芩苷组分别加入黄芩苷200、500ng/mL ;LPS+黄芩苷组加入100μg/mL LPS,同时分别加入黄芩苷 200ng/mL 、500ng/mL。24h收集细胞, 检测各组IL-6、IL-8、IL-1βmRNA表达的变化。结果： 500ng/mL浓度以下黄芩苷添加至细胞没有明显的细胞增殖毒性。单独加入黄芩苷200ng/mL和500ng/mL的黄芩苷组和空白对照组比较,IL-6、IL-8、IL-1β均无明显变化(P＞0.05)。 和空白对照组比较,LPS组IL-6、IL-8、IL-1β明显上升,差异有统计学意义 (P<0.05),同时加入LPS和200ng/ml黄芩苷,相比单独加入LPS组,IL-6、IL-8、IL-1β明显下降,差异有统计学意义(P<0.05)。而同时加入LPS和500ng/mL黄芩苷,相比单独加入LPS组,IL-6、IL-8、IL-1β明显上升,差异有统计学意义 (P<0.05) 结论：黄芩苷在低浓度时显示有抑炎作用,而在浓度增加达到500ng/mL时显示有促炎作用。     

HE4、CA125及ROMA对卵巢恶性肿瘤的预测价值

目的：探讨血清人附睾蛋白4（human epididymalprotein4,HE4）与糖链抗原125（carbohydrate antigen 125,CA125）联合运用卵巢恶性肿瘤风险模型（risk of ovarianmalignancy algorithm,ROMA）检测对卵巢恶性肿瘤的预测价值。方法：收集南京医科大学第一附属医院370例妇科良恶性肿瘤患者,采用电化学发光法检测其血清HE4及CA125水平,并对其中194例盆腔包块患者运用ROMA计算风险预测概率（predicted probability,PP）值。比较3种指标诊断卵巢恶性肿瘤的灵敏度、特异度、阳性预测值、阴性预测值并绘制受试者工作曲线（receiver operating characteristic curve,ROC）。结果：卵巢恶性肿瘤组血清HE4水平显著高于其余各类妇科良恶性肿瘤组（P < 0.05）;卵巢恶性肿瘤组血清CA125水平显著高于除卵巢交界性肿瘤组及子宫腺肌症组外的其余各组（P < 0.05）。上皮性卵巢癌（epithelial ovarian cancer,EOC）患者血清中HE4水平显著高于非EOC组（P < 0.05）;而CA125水平在两组之间无显著性差异（P < 0.05）。腹水阳性的EOC患者血清HE4水平、CA125水平均显著高于腹水阴性者（P=0.001,P < 0.001）。D?二聚体升高的EOC患者血清HE4水平显著高于D?二聚体正常患者（P=0.038）。CA125的灵敏度显著高于HE4（P=0.031）,HE4的特异性及阳性预测值显著高于CA125及ROMA。以卵巢交界性及良性肿瘤为参照,ROMA的ROC?AUC显著高于CA125（P=0.006）。结论：血清HE4水平在诊断卵巢恶性肿瘤方面显著较CA125具有更高的特异性,两者联合的ROMA指数较单一检测CA125具有更优的预测价值。