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Application of domperidone in preparation of medicine for treating swine Japanese encephalitis

A technology of porcine Japanese encephalitis and domperidone, which is applied in the field of application of domperidone for the preparation of porcine Japanese encephalitis therapeutic drugs, and can solve the problems of lack of porcine Japanese encephalitis and unobvious curative effect of porcine Japanese encephalitis

Inactive Publication Date: 2017-04-26
唐山滦牧生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the technical defects of the prior art, and provides the application of domperidone for the preparation of a medicine for treating Japanese encephalitis of pigs, so as to solve the technical problem of lacking a medicine for treating Japanese encephalitis of pigs in the prior art
[0007] Another technical problem to be solved by the present invention is that the curative effect of the medicine for treating porcine encephalitis B in the prior art is not obvious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This example mainly illustrates the specificity and dose dependence of domperidone in resisting JE virus-induced CPE and inhibiting JE virus replication at the cellular level.

[0023] Materials and methods:

[0024] 1. Toxicity testing. Plate the BHK21 cells on a 96-well cell culture plate, replace 80%-90% of the BHK21 cells with a maintenance solution containing 0.7% fetal bovine serum, and add different concentrations of domperidone. , 8, and 16 μM in six concentration gradients, and set up three duplicate wells for each concentration, and set up a negative control group of BHK21 cells, and culture at 37°C for 3 days. Cell Counting Kit-8 (DoJinDo product) was used to measure the degree of cytopathic disease (expressed as OD450) on a microplate reader (BIO-RAD product, model: Model 680) to observe the influence of domperidone on the cells.

[0025] 2. Specific verification of drug efficacy. Plate the BHK21 cells on a 96-well cell culture plate, replace 80%-90% of t...

Embodiment 2

[0036] This example mainly illustrates the evaluation of the anti-JEV activity of domperidone in mice.

[0037] Materials and Methods

[0038] Order a number of SPF grade three-week-old BALB / C female mice. At the beginning of the experiment, the mice are weighed and grouped in advance. Prepare the experimental equipment: 1mL syringe, cotton swab, electronic scale, and record book. During the experiment, both the PBS control group and the JEV virus infection group were injected with a certain amount of liquid in one side of the abdominal cavity according to their body weight for five consecutive days. In the following four days, only the same dose of domperidone was injected, followed by daily observation and weighing for recording, and continued observation for 20 days.

[0039] result:

[0040] The mice in the virus infection group died from the 7th day, and all the mice in the virus infection group died on the 14th day, and the survival rate of the mice in the domperidone...

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PUM

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Abstract

The invention provides an application of domperidone in preparation of a medicine for treating swine Japanese encephalitis. According to the technical scheme, an pharmacological action of domperidone on Japanese encephalitis viruses is researched based on the experimental means, and the domperidone is found to have a definite virus inhibitory effect in an in vivo environment and an in vitro cellular environment, can inhibit the virus replication level on the one hand, and can significantly reduce an cytopathic effect. On the basis, an pharmacological experiment finds that under an isolated cell culture condition, the RNA (ribonucleic acid) level of viruses in a cell culture medium of a domperidone intervention group is obviously inhibited, which is in mutual corroboration with the reduction of the virus replication level; moreover, an experiment finds that the domperidone inhibits the expression level of RAF1 protein, which prompts that the domperidone can specifically inhibit the replication of the Japanese encephalitis viruses by inhibiting the expression of the RAF1 protein. Based on the beneficial discovery, the invention determines a new application of the domperidone in the preparation of the medicine for treating the swine Japanese encephalitis, which not only expands the method for treating the disease, but also improves the curative effect level.

Description

technical field [0001] The invention relates to a new application of the compound domperidone, in particular to the application of domperidone in the preparation of a medicine for treating porcine Japanese encephalitis. Background technique [0002] Porcine Japanese encephalitis is an acute zoonotic disease caused by Japanese encephalitis virus. The main characteristics of pigs are high fever, abortion, stillbirth and boar orchitis. The disease is a natural foci disease, and many animals can become the source of infection of the disease after infection, and the infection of pigs is the most common. The disease is mainly transmitted through mosquito bites. The virus can reproduce in the mosquito body, survive the winter, pass through eggs, and become the source of infected animals in the next year. Because it is transmitted by mosquitoes, the epidemic is closely related to the breeding and activities of mosquitoes, and it has obvious seasonality. 80% of the cases occur in J...

Claims

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Application Information

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IPC IPC(8): A61K31/454A61P31/14
CPCA61K31/454
Inventor 吴全忠吴尚昆郭常春靳慧君张守勇
Owner 唐山滦牧生物科技有限公司