Indirect ELISA method for detecting haemophilus parasuis antibody by recombining Neu protein and kit of method

A technology for detection of Haemophilus suis and protein, which is applied in the field of indirect ELISA method and its kit, can solve the problems of lack of cross-protection, risk of spreading poison, high detection cost, etc., to avoid a large number of false negatives and false positives, and avoid spreading poison Danger, the effect of reducing the cost of detection

A technology for detection of Haemophilus suis and protein, which is applied in the field of indirect ELISA method and its kit, can solve the problems of lack of cross-protection, risk of spreading poison, high detection cost, etc., to avoid a large number of false negatives and false positives, and avoid spreading poison Danger, the effect of reducing the cost of detection

CN106501511AInactive Publication Date: 2017-03-15永州职业技术学院

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The concrete steps of the indirect ELISA method of its recombinant Neu protein detection Haemophilus parasuis antibody are as follows:

[0045] S1: Dilute the prepared antigen to 100ng / 100μl with 0.05 mol / L pH 9.6 carbonate buffer, coat the microplate plate, 100uL per well, lightly shake the microplate plate to spread the antigen evenly on the bottom of the well, 37 ℃ for 2 h, transfer to 4 ℃ for overnight adsorption;

[0046] S2: The next day, wash with PBST washing solution 3 to 5 times, each time for 5 minutes, and pat dry;

[0047] S3: Then block with 0.15% BSA, 200uL per well, incubate at 37°C for 1h, then wash the plate with washing solution for 3 to 5 times;

[0048] S4: Add the serum to be tested diluted with PBS, 100uL per well, set up negative and positive control wells at the same time, act at 37°C for 1 hour, wash the plate as above;

[0049] S5: Add diluted SPA-HRP, act at 23 °C for 1 hour, wash the plate as above;

[0050] S6: Add freshly prepared OPD-H...

Embodiment 2

[0054] The concrete steps of the indirect ELISA method of its recombinant Neu protein detection Haemophilus parasuis antibody are as follows:

[0055] S1: Dilute the prepared antigen to 25ng / 100μl with 0.05 mol / L pH 9.6 carbonate buffer, coat the microtiter plate, 100uL per well, lightly shake the microtiter plate to spread the antigen evenly on the bottom of the well, 37 ℃ for 2 h, transfer to 4 ℃ for overnight adsorption;

[0056] S2: The next day, wash with PBST washing solution 3 to 5 times, each time for 5 minutes, and pat dry;

[0057] S3: Then block with 0.15% BSA, 200uL per well, incubate at 37°C for 1h, then wash the plate with washing solution for 3 to 5 times;

[0058] S4: Add sample after sealing, add 100uL of serum to be tested diluted with PBS to each well, set up negative and positive control wells at the same time, act at 37 °C for 1 hour, wash the plate as above;

[0059] S5: Add diluted SPA-HRP, act at 23 °C for 1 hour, wash the plate as above;

[0060] S6...

Embodiment 3

[0064] The concrete steps of the indirect ELISA method of its recombinant Neu protein detection Haemophilus parasuis antibody are as follows:

[0065] S1: Dilute the prepared antigen to 50ng / 100μl with 0.05 mol / L pH 9.6 carbonate buffer, coat the microplate plate, 100uL per well, lightly shake the microplate plate to spread the antigen evenly on the bottom of the well, 37 ℃ for 2 h, transfer to 4 ℃ for overnight adsorption;

[0066] S2: The next day, wash with PBST washing solution 3 to 5 times, each time for 5 minutes, and pat dry;

[0067] S3: Then block with 0.15% BSA, 200uL per well, incubate at 37°C for 1h, then wash the plate with washing solution for 3 to 5 times;

[0068] S4: Add sample after sealing, add 100uL of serum to be tested diluted with PBS to each well, set up negative and positive control wells at the same time, act at 37 °C for 1 hour, wash the plate as above;

[0069] S5: Add diluted SPA-HRP, act at 23 °C for 1 hour, wash the plate as above;

[0070] S6...

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Abstract

The invention relates to the field of antibody detection, in particular to an indirect ELISA method for detecting a haemophilus parasuis antibody by recombining Neu protein and a kit of the method. The indirect ELISA method for detecting the haemophilus parasuis antibody by recombining the Neu protein comprises the steps that recombinant expressed and purified haemophilus parasuis Neuraminidase (Neu) protein serves as a coating antigen, accurate detection can be conducted on various serotype strains by optimizing the ELISA reaction condition, and the phenomenon that a large number of false negative results and false positive results appear can be better avoided; meanwhile, the phenomenon that the toxic risk exists in ELISA detection of a haemophilus parasuis disease can be effectively avoided, and the detection cost is greatly lowered.

Description

technical field [0001] The invention relates to the field of antibody detection, in particular to an indirect ELISA method and kit for detecting Haemophilus parasuis antibody with recombinant Neu protein. Background technique [0002] Haemophilus parasuis (HP) can cause polyarthritis, serositis, and meningitis in pigs, often in the nursery stage of piglets, and the mortality rate can reach 50%. With the rapid expansion of the scale of the pig industry and the change of the pig raising model, the epidemic trend of this disease has become increasingly serious in recent years, which has brought huge economic losses to the pig industry in my country, and has become the most serious bacterial disease in the pig industry. one of the diseases. Therefore, rapid and accurate diagnosis of the disease in order to take appropriate measures is the key to successful prevention and control of the disease. [0003] At present, the diagnosis of this disease in primary laboratories is limite...

Claims

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Application Information

Patent Timeline
15 Mar 2017
Publication
CN106501511A
IPC
G01N33/569; C12N9/24
CPC
G01N33/56911; C12N9/2402; C12Y302/01018; G01N2333/924
Inventors
刘俊琦