使用自动化消化方法 Trichomatic-35 评估 PrioCHECK™旋毛虫 AAD 试剂盒检测猪肉中的旋毛虫、布氏旋毛虫和假旋毛虫幼虫。
Evaluation of the PrioCHECK™ Trichinella AAD kit to detect Trichinella spiralis, T. britovi, and T. pseudospiralis larvae in pork using the automated digestion method Trichomatic-35.
机构信息
Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse-Faculty, University of Bern, Länggassstrasse 122, CH-3012 Bern, Switzerland.
School of Agricultural, Forest and Food Sciences HAFL, Bern University of Applied Sciences, Länggasse 85, CH-3052 Zollikofen, Switzerland.
出版信息
Parasitol Int. 2022 Feb;86:102449. doi: 10.1016/j.parint.2021.102449. Epub 2021 Sep 2.
Trichinellosis is a potentially deadly parasitic zoonosis that is contracted by consuming undercooked infected meat. Reliable detection of infectious Trichinella spp. larvae in meat is therefore pivotal to ensure consumer's safety. The recently authorised PrioCHECK™ Trichinella Alternative Artificial Digestion (AAD) test kit appears promising when used with the standard magnetic stirrer method, but evaluation with other apparatus types is lacking. In this study, the performance of the AAD kit in an adapted Trichomatic-35 (TM35) instrument was evaluated, first, at the Swiss National Reference Laboratory for trichinellosis (NRL); second, in a ring trial involving four Swiss official laboratories. Proficiency pork samples spiked with larvae of Trichinella spiralis, T. britovi, or T. pseudospiralis were tested with the AAD kit and with the reference pepsin-HCl digestion method in TM35 instruments. At the NRL, both methods yielded identical qualitative and similar quantitative results independently of the Trichinella species. In the ring trial, satisfactory results were obtained for 47/50 (94.0%) (AAD) and 62/67 (92.5%) (reference method) of the analysed samples. Technical problems impairing analysis were more frequently observed with the AAD kit (n = 22) than with the reference method (n = 5) and were mainly (16/22) reported by one of the external labs. When no technical issues were recorded, the performance of both methods was comparable, in agreement with the observations at the NRL; however, these results suggest a need for further training with the kit and standardisation of the adapted TM35 instruments.
旋毛虫病是一种潜在致命的寄生虫病,通过食用未煮熟的受感染肉类而感染。因此,可靠地检测肉中的传染性旋毛虫幼虫对于确保消费者的安全至关重要。最近授权的 PrioCHECK™旋毛虫替代人工消化(AAD)试剂盒在与标准磁力搅拌器方法一起使用时似乎很有前途,但缺乏对其他仪器类型的评估。在这项研究中,在瑞士国家旋毛虫病参考实验室(NRL)首先评估了 AAD 试剂盒在改良型 Trichomatic-35(TM35)仪器中的性能,其次,在涉及四个瑞士官方实验室的环试验中评估了 AAD 试剂盒的性能。用 AAD 试剂盒和 TM35 仪器中的参考胃蛋白酶-HCl 消化方法检测了用旋毛虫、T. britovi 或 T. pseudospiralis 幼虫污染的熟练度猪肉样本。在 NRL,两种方法都得到了定性相同和定量相似的结果,与旋毛虫种类无关。在环试验中,47/50(94.0%)(AAD)和 62/67(92.5%)(参考方法)的分析样本获得了令人满意的结果。与参考方法(n=5)相比,AAD 试剂盒(n=22)更频繁地出现影响分析的技术问题,并且主要(16/22)由一个外部实验室报告。当没有记录到技术问题时,两种方法的性能相当,与 NRL 的观察结果一致;然而,这些结果表明需要进一步培训试剂盒和标准化适应的 TM35 仪器。