Aquatic product Edwardsiella tarda rapid drug allergy detection kit

A kit and drug susceptibility technology, which is applied in the determination/inspection of bacteria and microorganisms, biochemical instruments, etc., can solve the problems of cumbersome operation, heavy workload, long cycle, etc. Effect

Active Publication Date: 2013-04-24
MARINE BIOLOGY INST OF SHANDONG PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the drug susceptibility testing methods mainly use the K-B disk method and the broth dilution method. The K-B disk method generally must be carried out under the conditions of a professional microbiological laboratory, and personnel with professional knowledge are required to complete the operation. Large amount, long cycle, etc., and the minimum inhibitory concentration (MIC) value of the drug cannot be obtained
Although the broth dilution method can determine the MIC value of the drug, the experimental cycle is long, sometimes requires professional equipment, and the interpretation of the results is not intuitive enough
Therefore, the above two methods are not suitable for application and promotion in aquaculture production.

Method used

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  • Aquatic product Edwardsiella tarda rapid drug allergy detection kit
  • Aquatic product Edwardsiella tarda rapid drug allergy detection kit
  • Aquatic product Edwardsiella tarda rapid drug allergy detection kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation of a microplate for the rapid detection of drug susceptibility of Edwardsiella tarda in aquatic products

[0034] 1. Drug configuration

[0035] According to the types of commonly used aquatic drugs and the list of banned drugs, the types of tested drugs were determined to be ampicillin, florfenicol, streptomycin, amikacin, oxytetracycline, neomycin, doxycycline, polymyxin B , compound sulfamethoxazole, enrofloxacin, rifampicin, a total of 11 kinds. According to the characteristics of different drugs, different solvents are used to accurately prepare the concentrations of 6.4mg / ml, 6.4mg / ml, 5.12mg / ml, 6.4mg / ml, 6.4mg / ml, 5.12mg / ml, 6.4mg / ml, 1.28mg / ml, 5.12mg / ml, 2.56mg / ml, 3.2mg / ml stock solution of antibacterial drugs, including ampicillin, streptomycin sulfate, amikacin, oxytetracycline hydrochloride, neomycin, doxycycline and polymyxin B were prepared with ultrapure water; florfenicol and rifampicin were dissolved in methanol and diluted wi...

Embodiment 2

[0045] Embodiment 2: the preferred of rapid enrichment liquid

[0046] In order to realize the rapid growth of Edwardsiella tarda and shorten the drug susceptibility testing process, on the basis of Mueller-Hinton (MH) medium formula, it was improved to make the enrichment solution, the improved formula is: MH0 (beef extract powder 6 g, 1.5 g soluble starch, 17.5 g casein hydrolyzate, 10 g NaCl, 2.8 mg CaCl 2 , 4 mg MgCl 2 , distilled water 1 L), MH1 (beef dipping powder 6 g, soluble starch 1.5 g, casein hydrolyzate 17.5 g, NaCl 10 g, 2.8 mg CaCl 2 , 4 mg MgCl 2 , 10% fish broth, distilled water 1 L) and MH2 (beef dipping powder 6 g, soluble starch 1.5 g, casein hydrolyzate 17.5 g, NaCl 10 g, 2.8 mg CaCl 2 , 4 mg MgCl 2 , fish peptone 10 g, distilled water 1 L). In order to test the multiplication effect of different enrichment solution formulas on Edwardsiella tarda, 1 ml of Edwardsiella tarda bacteria solution cultured overnight was transferred into 100 ml of MH0, MH1 a...

Embodiment 3

[0048] Example 3: Comparison of Drug Sensitivity Detection Using Microplate for Quick Detection of Drug Sensitivity of Aquatic Edwardsiella tarda

[0049] 1) Pick a single colony of Edwardsiella tarda JF-1 from a solid medium plate, inoculate it in the enrichment solution, and place it in a 28°C incubator for shaking culture (rotational speed: 120rpm) until it becomes turbid to the naked eye. The formula of the Edwardsiella tarda enrichment solution described therein is: beef extract powder 6g, soluble starch 1.5g, casein hydrolyzate 17.5g, NaCl 10g, fish peptone 10g, 1mgCa 2+ , 1mgMg 2+ , Distilled water 1L.

[0050] 2) Adjust the concentration of the enrichment solution to 0.5 wheat degrees with the test culture solution, and then dilute it 1500 times to make the concentration of the bacteria reach 1×10 5 A / ml is used for drug susceptibility testing. The formula of the detection culture solution described therein is: beef extract powder 6g, soluble starch 1.5g, casein hyd...

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Abstract

The invention relates to an Edwardsiella tarda rapid drug allergy detection kit which can be applied in aquaculture sites. The Edwardsiella tarda rapid drug allergy detection kit comprises a detection plate, a bacterium body collecting tool, bacterium increasing liquid, a drug allergy detection culture medium, a turbidimetric tube and a colorimetric card. The detection plate comprises a detection hole which is used for drug allergy detection and is coated with drugs and a colorific indicator. The colorific indicator is alamar blue. Due to the fact that the bacterium increasing liquid of the Edwardsiella tarda is formed by adding fish meat peptone, Ca2+ and Mg2+, and adjusting concentration of sodium chloride (NaCl) on the basis of an MH culture medium, growth of the Edwardsiella tarda can be effectively improved, the bacterium increasing liquid is enabled to reach required concentration in a short time, and time of the drug allergy detection is shortened. Meanwhile, due to the facts that a blue dyestuff namely the alamar blue is used, and the alamar blue is safe and nontoxic to cells, the Edwardsiella tarda rapid drug allergy detection kit is free from toxic action to the cells, the alamar blue is directly coated in a drug allergy detection plate micro hole and is incapable of influencing the growth of bacteria, detection operation is enabled to be simple, convenient and rapid, and multiplication trends of the bacteria can be continuously monitored.

Description

technical field [0001] The invention belongs to the technical field of in vitro diagnosis of aquatic pathogenic microorganisms, and in particular relates to a rapid drug sensitivity detection kit for aquatic animal pathogenic bacteria Edwardsiella tarda. Background technique [0002] With the rapid development of aquaculture in recent years, the problem of aquaculture animal diseases has become increasingly prominent, among which bacterial diseases have caused huge losses to the fishery economy worldwide. Edwardsiella tarda is an important pathogenic bacterium of aquatic animals, which can infect a variety of fish including freshwater and seawater, and can cause a large number of deaths in a short period of time. At present, in the process of aquaculture production, the use of antibiotics is still an important means to solve the bacterial diseases of aquaculture animals. , the species and quantity of antibiotic-resistant microorganisms in aquatic products have been continuo...

Claims

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Application Information

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IPC IPC(8): C12M1/34C12N1/20C12Q1/20C12R1/01
Inventor 刁菁杨秀生叶海斌薛莲盖春蕾
Owner MARINE BIOLOGY INST OF SHANDONG PROVINCE
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