Loop-mediated isothermal amplification (LAMP) is a novel method that amplifies DNA with high specificity and rapidity under isothermal conditions. In this study, using the LAMP method, a protocol for koi herpes virus (KHV) detection in common carp was designed. A set of four primers, two inner and two outer, were designed based on the sequence of the thymidine kinase (tk) gene of KHV. Time and temperature conditions for detection of KHV were optimized for 60 min at 65 degrees C. The detection limit using LAMP was found to be similar to that by polymerase chain reaction. In this study, we have developed a highly sensitive and rapid diagnostic procedure for detection of KHV infection in common carp.
A reverse transcription loop-mediated isothermal amplification (RT-LAMP) protocol was developed for detection of infectious hematopoietic necrosis virus (IHNV) RNA in rainbow trout (Oncorhynchus mykiss). A set of four primers, two outer and two inner primers for the RT-LAMP and the LAMP assay, were designed based on the sequence of G-protein of IHNV. Time and temperature conditions were optimized for 60 min at 63 degrees C for both RT-LAMP and LAMP protocols. The detection limit was found to be similar for both RT-LAMP and LAMP. When the sensitivity of RT-LAMP and LAMP were compared with conventional nested PCR, a10-fold higher sensitivity was seen for the LAMP protocols.
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