Microalbuminuria as a possible marker of risk of Balkan endemic nephropathy

Aim: To evaluate whether microalbuminuria could be a marker of early tubular damage in individuals at risk of developing Balkan endemic nephropathy (BEN). Methods: A cross-sectional study was used to determine urinary albumin-to-creatinine ratio (UACR) in a test group of 61 participants from a BEN endemic region and control group of 64 participants from a nearby non-endemic region, both recruited from the general population of Bosnia and Herzegovina. The correlation between UACR and urinary b2 microglobulin-to-creatinine ratio (UBCR) and the receiver operating characteristic curve for UACR were analyzed in the test groups of 58 participants. The correlation analysis was also performed in a subset of nine subjects with elevated UBCR. Results: Medians, interquartile ranges and confidence intervals (CI) for medians of UACR in the test and control groups were 2 mg/mmol, 0.975–8.247 mg/mmol, 1.3472–3.2691 mg/mmol and 1 mg/mmol, 0.695–1.41 mg/mmol, 0.8466–1.2053 mg/mmol, respectively (P = 0.0001). Microalbuminuria was found in 30 of the 61 examinees in the test group, in contrast to six of the 64 examinees in the controls (P < 0.0001). Participants from the endemic region had 9.3 times the odds of having microalbuminuria in contrast to participants from the non-endemic region. Pearson's correlation coefficients r of the log-transformed ratios and Kendall–tau coefficients of rank correlation in the group of 58 and in a subset of nine subjects with elevated UBCR were: 0.55 (P < 0.0001); 0.317 (P = 0.0005) and 0.59 (P = 0.045); 0.48 (P = 0.037), respectively. The area under the curve for UACR was 0.882 (P = 0.0001), sensitivity 100% and specificity 67.3%. Conclusion: Microalbuminuria may be a useful marker of early tubular injury in individuals at risk of developing BEN.     

大孔吸附树脂分离纯化毛头牛蒡子多糖的工艺研究

目的研究大孔吸附树脂分离纯化毛头牛蒡子中多糖的方法。方法比较4种不同型号大孔吸附树脂AB-8、HPD-300、HPD-450、HPD-600型对毛头牛蒡子多糖的纯化效果;采用分光光度法测定毛头牛蒡子多糖的含量,用静态吸附-解析方法从4种大孔吸附树脂中筛选出适宜的树脂,并优化纯化条件。结果 AB-8型大孔吸附树脂对毛头牛蒡子提取液中多糖的纯化效果最佳,最佳工艺条件为:上样液浓度2.8mg/ml;流速2BV/h;最佳洗脱溶剂为50%乙醇,洗脱溶剂用量为2BV。结论 AB-8型大孔吸附树脂能较好的洗脱分离毛头牛蒡子多糖,为毛头牛蒡子的综合开发提供新的思路与方法。     

新疆南部不同类型内脏利什曼病流行区媒介白蛉监测

目的了解新疆南部不同类型内脏利什曼病部分流行区媒介白蛉动态。方法选择库尔勒砾漠地带、喀什古老绿洲农业区和伽师荒漠农业区作为监测点;3种类型监测点采用粘性油纸法、诱蛉灯法、捕蛉管人工捕集法和白布灯照诱引法捕集白蛉;对捕集的白蛉观察密度、鉴定蛉种并检查雌蛉自然感染前鞭毛体。结果喀什、伽师和库尔勒捕蛉管人工捕集法白蛉密度分别为34.83、27.69和0.73只/人工小时;喀什解剖白蛉860只,其中吴氏白蛉占77.6%,长管白蛉占22.4%。伽师解剖白蛉604只,均为吴氏白蛉;库尔勒解剖白蛉11只均为亚历山大白蛉;吴氏白蛉是喀什古老绿洲农业区和伽师荒漠农业区夜间在有灯光的户外和人房外墙活动的优势蛉种;长管白蛉是喀什古老绿洲农业区白天主要在人房内和畜舍内活动的优势蛉种,夜晚也可在人房外墙捕到;亚历山大白蛉是库尔勒砾漠地带的优势蛉种。结论喀什和伽师白蛉密度甚高,应根据各自的特点,采取有效方法控制传播媒介,降低人群内脏利什曼病发病率。