Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221 005, U.P., India.
Trans R Soc Trop Med Hyg. 2011 Sep;105(9):537-9. doi: 10.1016/j.trstmh.2011.05.008. Epub 2011 Jun 25.
This study evaluates commercially available rK39 immunochromatographic strips using urine for diagnosis of visceral leishmaniasis (VL). Freshly collected urine and serum samples of 280 parasitologically confirmed VL patients and 66 endemic healthy controls (EHC), 48 nonendemic healthy controls (NEHC) and 45 different diseases were tested with rK39 strips. The sensitivity of rK39 in urine was 96.4% while the specificity was low varying from 66.7% in EHC, 77.08% in NEHC to 62.2% in different diseases. With serum, sensitivity was 100% whereas the specificity was 100%, 92.4% and 95.55% for the respective control groups. In the present format, the immunochromatographic strips cannot be used for the diagnosis of VL using urine samples.
本研究评估了市售 rK39 免疫层析条,采用尿液样本用于内脏利什曼病(VL)的诊断。对 280 例经寄生虫学证实的 VL 患者和 66 例地方性健康对照(EHC)、48 例非地方性健康对照(NEHC)和 45 种不同疾病的新鲜采集的尿液和血清样本进行 rK39 条检测。rK39 在尿液中的灵敏度为 96.4%,特异性较低,在 EHC 中为 66.7%,在 NEHC 中为 77.08%,在不同疾病中为 62.2%。使用血清时,相应对照组的灵敏度均为 100%,特异性分别为 100%、92.4%和 95.55%。按照目前的形式,免疫层析条不能用于尿液样本中 VL 的诊断。