Goecke Nicole B, Hjulsager Charlotte K, Krog Jesper S, Skovgaard Kerstin, Larsen Lars E
Division for Diagnostics & Scientific Advice, National Veterinary Institute, Technical University of Denmark, Lyngby, Denmark (Goecke, Hjulsager, Krog, Skovgaard, Larsen).
J Vet Diagn Invest. 2020 Jan;32(1):51-64. doi: 10.1177/1040638719890863. Epub 2019 Nov 21.
Respiratory and intestinal diseases in pigs can have significant negative influence on productivity and animal welfare. A wide range of real-time PCR (rtPCR) assays are used in our laboratory (National Veterinary Institute, Technical University of Denmark) for pathogen detection, and PCR analyses are performed on traditional rtPCR platforms in which a limited number of samples can be analyzed per day given limitations in equipment and personnel. To mitigate these restrictions, rtPCR assays have been optimized for the high-throughput rtPCR BioMark platform (Fluidigm). Using this platform, we developed a high-throughput detection system that can be used for simultaneous examination of 48 samples with detection specificity for 18 selected respiratory and enteric viral and bacterial pathogens of high importance to Danish pig production. The rtPCR assays were validated and optimized to run under the same reaction conditions using a BioMark 48.48 dynamic array (DA) integrated fluidic circuit chip, and the sensitivity and specificity were assessed by testing known positive samples. Performance of the 48.48DA was similar to traditional rtPCR analysis, and the specificity of the 48.48DA was high. Application of the high-throughput platform has resulted in a significant reduction in cost and working hours and has provided production herds with a new innovative service with the potential to facilitate the optimal choice of disease control strategies such as vaccination and treatment.
猪的呼吸道和肠道疾病会对生产力和动物福利产生重大负面影响。我们实验室(丹麦技术大学国家兽医研究所)使用多种实时荧光定量聚合酶链反应(rtPCR)检测方法进行病原体检测,PCR分析在传统rtPCR平台上进行,由于设备和人员的限制,每天能够分析的样本数量有限。为了缓解这些限制,rtPCR检测方法已针对高通量rtPCR BioMark平台(Fluidigm)进行了优化。利用该平台,我们开发了一种高通量检测系统,可用于同时检测48个样本,对丹麦生猪生产具有高度重要性的18种选定呼吸道和肠道病毒及细菌病原体具有检测特异性。rtPCR检测方法经过验证和优化,可使用BioMark 48.48动态阵列(DA)集成微流控芯片在相同反应条件下运行,并通过检测已知阳性样本评估其灵敏度和特异性。48.48DA的性能与传统rtPCR分析相似,且48.48DA的特异性较高。高通量平台的应用显著降低了成本和工作时间,并为生产猪群提供了一项新的创新服务,有可能促进诸如疫苗接种和治疗等疾病控制策略的最佳选择。