Rapid diagnostic reagent kit of legionella pneumophilia genes based on loop-mediated isothermal amplification technique and detecting method thereof

Abstract

The invention discloses a rapid diagnostic reagent kit of legionella pneumophilia genes based on a loop-mediated isothermal amplification technique and a detecting method thereof, wherein the reagent kit consists of two pairs of primers, DNA polymerase, a stable liquid, a reaction liquid, a sample pretreatment liquid, a color rendering liquid and a positive contrast liquid which are respectively placed in a container. The gene rapid diagnostic reagent kit can judge whether target substances exist or not by applying applies six sections and the four primers according amplification or non-amplification, and thereby has high specificity. The gene rapid diagnostic reagent kit has high speed, high efficiency and high sensitivity, only needs a constant temperature for amplification reaction without special reagents and equipment, and has low detection cost. The gene rapid diagnostic reagent kit has simple identification, can generate magnesium pyrophosphate deposits as a byproduct by combining pyrophosphate ions precipitated from dNTP and Mg<2> in a reaction solution, can identify the magnesium pyrophosphate deposits through visual study, and has remarkable color rendering difference of negative and positive results after the color rendering liquid is added, and is more marked and reliable.

Description

technical field

[0001] The invention relates to a biological detection reagent, in particular to a rapid diagnosis kit for Legionella pneumophila gene and a detection method thereof. Background technique

[0002] At present, there are many detection methods for Legionella pneumophila, from the national standard (GB / T4789.7-2003) focusing on the isolation and identification of pathogenic microorganisms, morphological identification and automatic biochemical identification, to the immunological detection technology of specific proteins, Nucleic acid probes, polymerase chain reaction (PCR) technology and other molecular biological detection methods [Food Safety Testing and Modern Biotechnology, Chemical Industry Press, 2004]. Among them, the detection of pathogenic nucleic acids has greatly improved in terms of rapidity, safety, accuracy and sensitivity. These new technologies try to break through the traditional microbiological detection modes such as morphology and biochemica...

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