先天性马蹄内翻足动物模型胚胎后肢(芽)评分系统的建立

Objective Quantification of the severity of congenital clubfoot is essential for its re-search and treatment. Up to date, no scoring system is available for hind limb bud development. In this study,a scoring system was established based on a murine model Methods Sixty female Wistar rats weighing 220～250 g were randomized into the six control groups and six experimental groups. Vaginal sperm plug detection day was considered to be day 0 of gestation. Hind limb buds from fetuses of E13, 14, 15,16,17 and 18 days were removed and processed. Results Morphogenetic differentiation changes were detected in the experimental groups. According the new scoring system, clubfoot-like deformity was present in 80.9% of the experimental fetuses. We were able to quantify the extent morphogenetic diffcrentiation of the hind limb accordingly. Conclusions Congenital clubfoot deformities begin at early developmental stage and become exaggerated as the fetuses mature. The scoring system can quantify the extent of congenital clubfoot deformity and facilitate its management.     

慢性肾脏病患者血清Klotho水平及其与肾功能关系初探

目的 检测慢性肾脏病（CKD）3～5期患者血清Klotho水平,探讨其与肾功能进展的关系.方法 选择29例CKD 3～5期患者（CKD组）,年龄匹配的非CKD患者10例（对照组）,采用酶联免疫吸附技术测定血清Klotho和成纤维生长因子23 （FGF23）水平.结果 对照组血清Klotho水平为（1 125.50±126.96） ng/L,CKD组为（670.07±146.22） ng/L,两组比较差异有统计学意义（P＜0.01）.对照组血清FGF23水平为（10.48±8.93） ng/L,CKD组为（48.89±44.28） ng/L,两组比较差异有统计学意义（P＜0.01）.Pearson相关分析显示,CKD患者血清Klotho水平与估计的肾小球滤过率（eGFR）和血红蛋白呈正相关,与log尿素氮、log肌酐、log FGF23以及血磷呈负相关.多元逐步回归分析显示log FGF23和血磷是影响CKD患者血清Klotho水平的独立因素.根据eGFR每年下降率将CKD患者分为肾功能快速进展组（10例）和肾功能稳定组（19例）.肾功能快速进展组血清Klotho水平更低[（580.27±162.15）ng/L比（717.33±115.22）ng/L],血尿酸和尿蛋白水平更高[（448.00±65.21） mmol/L比（368.32±78.80） mmol/L、（1.99±1.57） g/d比（0.60±1.00） g/d],差异均有统计学意义（P＜0.05）.结论 CKD 3～5期患者血清Klotho水平随肾功能下降而降低,血磷和FGF23是其独立影响因素.血清Klotho可能成为预测CKD患者肾功能进展的指标.     

血浆黏度与脑白质疏松的相关性研究

目的探讨血浆黏度与脑白质疏松(LA)之间的相关性。方法选取正常对照组60例和LA组60例,收集2组的临床资料来评估LA相关可能的危险因素,进一步对血浆黏度进行多因素Logistic回归分析,并采用MRI的Fazekas方法对LA组进行分级,评估不同程度LA患者的血浆黏度水平差异。结果 LA组的年龄、三酰甘油及血浆黏度水平与对照组比较,差异有统计学意义(P<0.05),血浆黏度的增高与LA的发生相关(OR=1.298),当调整其他危险因素后,差异仍有统计学意义(P<0.05);且随着Fazekas评分增加,血浆黏度水平随之增加。结论血浆黏度水平和LA相关,可能是LA的独立危险因素,且随着LA程度的加重而增高。