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Primer for PCR (polymerase chain reaction) diagnosis of wild porcine parvovirus infection, kit with primer for PCR diagnosis of wild porcine parvovirus infection and application of primer and kit

A parvovirus and kit technology, applied in the field of primers for PCR diagnosis of porcine parvovirus wild virus infection, can solve the problems of being unsuitable for large-scale clinical diagnosis and field application, producing non-target bands, and low specificity of primers. Simple result judgment, short detection time and good repeatability

Inactive Publication Date: 2017-02-22
HUNAN XINNANFANG CULTURE SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The specificity of the primers has a great influence on the reaction. If the specificity of the primers is not high, non-target bands may be generated during the amplification process, which will affect the determination of the detection results.
At present, there have been research reports on PCR detection methods of PPV at home and abroad. These methods require high technical content or have not been commercialized. They can only be used in professional laboratories and are not suitable for large-scale clinical diagnosis and field application.

Method used

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  • Primer for PCR (polymerase chain reaction) diagnosis of wild porcine parvovirus infection, kit with primer for PCR diagnosis of wild porcine parvovirus infection and application of primer and kit
  • Primer for PCR (polymerase chain reaction) diagnosis of wild porcine parvovirus infection, kit with primer for PCR diagnosis of wild porcine parvovirus infection and application of primer and kit
  • Primer for PCR (polymerase chain reaction) diagnosis of wild porcine parvovirus infection, kit with primer for PCR diagnosis of wild porcine parvovirus infection and application of primer and kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Extraction of DNA from Umbilical Cord Blood

[0046] (1) Collection of umbilical cord blood

[0047] Cord blood collection includes the following steps: a. Take a clean penicillin bottle and bottle stopper, clean them, boil and sterilize them for 30 minutes, dry them and collect them for later use;

[0048] b. When the piglets are born, squeeze the "cord blood" of all piglets delivered by each sow into a clean penicillin bottle, 3-5 drops per piglet, and squeeze the "cord blood" into penicillin bottle, sealed;

[0049] Precautions: ①It is necessary to collect all the piglets from the same litter sow to avoid missed detection caused by individual differences in the piglets from the same litter sow; ②It can be operated by two people or alone. You can cut the umbilical cord into several sections and then operate it; ③If the sow is mummified or stillborn, the umbilical cord blood of the piglets in the same litter should be tested;

[0050] c. After the umbilical cord ...

Embodiment 2

[0085] In a farm with 1,000 sows in the north, the sows were vaccinated with the parvovirus vaccine. In order to further evaluate the protective effect of the parvovirus vaccine on the sows and the infection of the piglets, the umbilical cord blood of piglets from 12 litters of farrowing sows was collected. According to the method described in Implementation 1, distinguish porcine parvovirus vaccine immunity and viral wild virus infection, evaluate the immune effect of porcine parvovirus vaccine, and the situation of piglets infected with porcine parvovirus. The result is as figure 1 shown.

[0086] From figure 1It can be seen that there is porcine parvovirus in the umbilical cord blood of the positive control sample, no porcine parvovirus is detected in the umbilical cord blood of the negative control sample, and VP2 of porcine parvovirus is present in the umbilical cord blood of samples 3, 8-10 and 12 The fragments in the gene further indicate the presence of porcine parvo...

Embodiment 3

[0088] In a farm with 500 sows in the north, the sows were vaccinated with the parvovirus vaccine. In order to further evaluate the protective effect of the parvovirus vaccine on the sows and the infection of the piglets, the umbilical cord blood of piglets from 14 litters of farrowing sows was collected. According to the method described in Implementation 1, distinguish porcine parvovirus vaccine immunity and viral wild virus infection, evaluate the immune effect of porcine parvovirus vaccine, and the situation of piglets infected with porcine parvovirus. The result is as figure 2 shown.

[0089] From figure 2 It can be seen that there is porcine parvovirus in the umbilical cord blood of the positive control sample, porcine parvovirus is not detected in the umbilical cord blood of the negative control sample, and there is no porcine parvovirus in the VP2 gene of the umbilical cord blood of samples 1-14. Fragments, further indicating that there is no porcine parvovirus in ...

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Abstract

The invention discloses a primer for PCR (polymerase chain reaction) diagnosis of wild porcine parvovirus infection, a kit with the primer for PCR diagnosis of wild porcine parvovirus infection and application of the primer and the kit. The primer for PCR diagnosis of wild porcine parvovirus infection is as shown in SEQ ID NO:1 and SEQ ID NO:2. The primer can be used for preparing the kit for PCR diagnosis of wild porcine parvovirus infection, and the kit comprises a forward primer, a reverse primer, a negative control, a positive control, 10*PCR buffer solution, Taq enzyme and dNTP. The primer and the kit with the primer are available for specific distinguishing of porcine parvovirus vaccine immunity and wild porcine parvovirus infection and are high in sensitivity and repeatability and real and reliable in detection result. Utilization of special instruments in a detection process is avoided, and simplicity and convenience in detection, short detection time and simplicity in result determination are realized.

Description

technical field [0001] The invention relates to the technical field of molecular diagnosis of animal pathogens, in particular to a primer for PCR diagnosis of porcine parvovirus wild virus infection, a kit containing the primer and an application thereof. Background technique [0002] Porcine parvovirus disease is a pig reproductive disorder caused by porcine parvovirus (Porcine Parvovirus, PPV). It is an infectious disease characterized by infection of embryos and fetuses to death, mummies, deformed fetuses and normal fetuses. Porcine parvovirus disease is widespread and occurs worldwide. The disease can occur throughout the year, but occurs frequently during the sows' farrowing and mating season from April to October each year. The disease is endemic or sporadic. After the occurrence of the disease, the pig farms may continue to experience reproductive failure for several years. The main target of the disease is young sows, especially first-born sows, which are highly in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/70C12Q1/68C12N15/11C12R1/93
CPCC12Q1/701
Inventor 喻正军李增强石建廖娟红
Owner HUNAN XINNANFANG CULTURE SERVICE CO LTD
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