Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Vaccine protection agent, and combined measles and Japanese encephalitis vaccine and preparation method thereof

A vaccine protective agent and measles technology, which is applied in the field of protective agent of measles and Japanese encephalitis combined vaccine, can solve the problems of poor stability, short validity period and high adverse reaction rate, and achieve good stability, extended shelf life and good protection effect. Effect

Active Publication Date: 2012-06-27
CHENGDU INST OF BIOLOGICAL PROD
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the protective agents of measles and Japanese encephalitis combined vaccines reported in the existing literature have many problems, such as poor stability, short validity period, high adverse reaction rate, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Vaccine protection agent, and combined measles and Japanese encephalitis vaccine and preparation method thereof
  • Vaccine protection agent, and combined measles and Japanese encephalitis vaccine and preparation method thereof
  • Vaccine protection agent, and combined measles and Japanese encephalitis vaccine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation of embodiment 1 protective agent of the present invention

[0027] 1. Preparation method

[0028] (1), gelatin solution: dissolve gelatin in sterilized phenol red-free EBSS balanced salt solution under the condition of 100 ℃ hot water bath to aid dissolution, stir in real time, wait until completely dissolved and clear, then make the gelatin concentration 5% ~25%, 0.11MPa for 30 minutes to sterilize, then dilute to volume with sterilized phenol red-free EBSS balanced salt solution in a sterile environment to obtain a gelatin solution, store at 37°C until use;

[0029] (2) Sugar solution: Dissolve trehalose and sucrose in sterilized EBSS balanced salt solution under the condition of 100°C hot water bath to aid dissolution, stir in real time, and after being completely dissolved and clear, sterilize at 100°C for 30 minutes, Constant volume, so that the concentration of each sugar in the solution is 20-40%, while hot, sterilize and filter to obtain the sug...

Embodiment 2

[0032] The screening experiment of embodiment 2 protective agent of the present invention

[0033] 1. Preparation method

[0034] (1), preparation of protective agent

[0035] According to the formula shown in Table 1, the protective agent was prepared according to the following steps:

[0036] a. Gelatin solution: Dissolve gelatin in sterilized phenol red-free EBSS balanced salt solution under the condition of 100°C hot water bath to aid dissolution, stir in real time, wait until it is completely dissolved and clear, and then set the volume to make the gelatin concentration 5% to 25% %, 0.11MPa for 30 minutes to sterilize, then dilute to volume with sterilized phenol red-free EBSS balanced salt solution in a sterile environment to obtain a gelatin solution, and store it at 37°C for later use;

[0037] b. Sugar solution: Dissolve trehalose and sucrose in sterilized EBSS balanced salt solution under the condition of 100°C hot water bath to aid dissolution, stir in real time, ...

Embodiment 3

[0064] Embodiment 3 vaccine stability test of the present invention

[0065] Take the batch number MJV20100611 prepared in Example 2 and the three batches of JE-Measles combined vaccines, MJV20100712 and MJV20100813, which are completely consistent with the formula of the protective agent in Example 2, and refer to ICH's "STABILITY TESTING OF NEW DRUG SUBSTANCES AND PRODUCTS" to conduct 56 batches of vaccine finished products. ℃ Accelerated thermal stability test. The three batches of vaccine combined vaccine finished products were stored at 56°C for 1 hour, 4 hours, 8 hours, 12 hours, 24 hours and 72 hours respectively, and the titers of measles virus and Japanese encephalitis virus in the combined vaccine were measured by sampling. The experimental results are shown in Table 2:

[0066] Table 2 Titers of measles JE vaccine after storage at 56°C for different time

[0067]

[0068] It can be seen from Table 2 that the combined live attenuated measles and Japanese encepha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Titeraaaaaaaaaa
Titeraaaaaaaaaa
Titeraaaaaaaaaa
Login to View More

Abstract

The invention provides a vaccine protection agent which is characterized by comprising the following components by weight: 60 to 200 parts of disaccharides, 3 to 10 parts of gelatin, 0.5 to 10 parts of amino acid, 3 to 10 parts of urea, 3 to 10 parts of sorbitol and 2 to 10 parts of human albumin. The invention also provides a combined measles and Japanese encephalitis vaccine and a preparation method thereof. The vaccine protection agent provided in the invention can effectively enhance stability of the combined measles and Japanese encephalitis vaccine and has a high application value.

Description

technical field [0001] The invention relates to a vaccine protective agent, in particular to a protective agent of measles-Japanese encephalitis combined vaccine. Background technique [0002] Measles and Japanese encephalitis combined vaccine is a dual live vaccine prepared from an attenuated strain of measles virus and an attenuated strain of Japanese encephalitis virus. For live toxin vaccines, the components of the freeze-drying protective agent and the freeze-drying process of the two vaccines are similar. And the ages of immunization of the two are similar (measles: over 8 months old, the age of additional immunization is 18-24 months; Japanese encephalitis: vaccination at 8 months old, booster immunization at 2 years old), the injection method is the same (subcutaneous inoculation of deltoid muscle of upper arm) ), my country has already begun to develop the measles-JE combined vaccine, but due to reasons such as vaccine stability, there has been no finished product o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61K47/42A61K39/295A61K39/165A61K39/12A61P31/14A61K47/18A61K47/26
CPCY02A50/30
Inventor 李玉华吴永林康庄
Owner CHENGDU INST OF BIOLOGICAL PROD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com