CN108931413A - A kind of quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis - Google Patents

A kind of quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis Download PDF

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Publication number
CN108931413A
CN108931413A CN201810810362.5A CN201810810362A CN108931413A CN 108931413 A CN108931413 A CN 108931413A CN 201810810362 A CN201810810362 A CN 201810810362A CN 108931413 A CN108931413 A CN 108931413A
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CN
China
Prior art keywords
liquid
mycobacterium tuberculosis
antiacid
quick
modified form
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CN201810810362.5A
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Chinese (zh)
Inventor
何元林
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Jiangsu Li Connaught Biological Technology Co Ltd
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Jiangsu Li Connaught Biological Technology Co Ltd
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Priority to CN201810810362.5A priority Critical patent/CN108931413A/en
Publication of CN108931413A publication Critical patent/CN108931413A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64Fluorescence; Phosphorescence
    • G01N21/6486Measuring fluorescence of biological material, e.g. DNA, RNA, cells
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/30Staining; Impregnating ; Fixation; Dehydration; Multistep processes for preparing samples of tissue, cell or nucleic acid material and the like for analysis
    • G01N2001/302Stain compositions

Abstract

The invention discloses a kind of quick antiacid fluorescent dyeing reagents of modified form mycobacterium tuberculosis, include two kinds of reagents, and A liquid includes pure water, sodium chloride or potassium chloride, dimethyl sulfoxide, glycerol, auramine O.B liquid includes pure water, hydrochloric acid, ethyl alcohol, methyl green or Evans blue.Product of the present invention carries out improvement optimization to auramine O fluorescence colour by optimization of C/C composites, develops a kind of mycobacterium tuberculosis of double-formulation quickly antiacid fluorescent dyeing reagent.Only need the operation of two steps that dyeing can be completed, and dyeing time was reduced to 2 minutes or so by traditional 20 minutes, clinical use is more convenient, quick, greatly improves the detection efficiency of mycobacterium tuberculosis.

Description

A kind of quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis
Technical field
The invention belongs to biomedical diagnostic techniques fields, and in particular to a kind of modified form mycobacterium tuberculosis is quickly antiacid Fluorescent dyeing reagent.
Background technique
Pulmonary tuberculosis is a kind of common respiratory system communicable disease, spread speed quickly, if failing to receive in time effective Diagnosis and treatment, it is easy to cause mycobacterium tuberculosis infection other organs or system, such as bone tuberculosis, enteron aisle tuberculosis, kidney tuberculosis, Not only bring the larger pain of patient, moreover it is possible to improve treatment difficulty, accelerate disease progression, the extended treatment time increases organ function Failure risk.With the development that deepens continuously of China's medical level, gradually reinforcement to pulmonary tuberculosis prevention and control dynamics, in addition the common people couple It is gradually increased in what health care required, under comprehensive function, many tuberculars are timely and effectively treated.But according to doctor Investigation display is learned, lunger's disease incidence is still high, has become whole world public health problem outstanding.
Mycobacterium tuberculosis be elongated slightly curved bacillus, 1~0.4 μm of size.Mycobacterium bovis then compares tubbiness.Point The bacteria cell wall lipid content of Ramibacterium is higher, accounts for about the 60% of dry weight, especially has a large amount of mycolic acids to be enclosed in peptide poly- The outside of sugar layer can influence penetrating for dyestuff.Mycobacterium tuberculosis is in vivo and in vitro through penicillin, seromycin or bacteriolyze enzyme induction The synthesis of peptide glycan in cell wall can be influenced, isoniazid influences the synthesis of mycolic acid, and macrophage swallows mycobacterium tuberculosis The effect of lysozyme can destroy peptide glycan afterwards, and can lead to it becomes L-type, be in granular form or Filamentous.
It includes that neat-Nissl Ziehi-Neelsen stain, cultivation and auramine O are glimmering that clinic, which is commonly used in the method detected in conjunction with bacillus, Light decoration method etc..
1. neat-Nissl Ziehi-Neelsen stain: Ziehi-Neelsen stain is a kind of common, easy and rapidly combines bacillus detection side Method is of great significance to diagnosis lungy.This method is to make mycolic acid secured with carbolfuchsin in a heated condition It is combined into compound, handles also nondiscoloration with hydrochloride alcohol.After adding alkaline methylene blue to redye again, mycobacteria remains as red, And the substance in other bacteriums and background is blue.The method is limited by mycobacterium quantity in sputum, and sensibility is low, omission factor It is high.And life or death bacterium cannot be distinguished in this method, and Mycobacterium tuberculosis and Nontuberculosis mycobacteria especially cannot be distinguished.
2. isolated culture method: obligate aerobic.Optimum temperature is 37 DEG C, is not grown lower than 30 DEG C.Mycobacterium tuberculosis is thin The lipid content of cell wall is higher, influences the absorption of nutriment, therefore slow growth.In 1 generation of every division, takes in general culture medium 18~24 hours.There are commonly Roche solid mediums, include yolk, glycerol, potato, inorganic salts etc..Yolk is raw containing lipid The long factor, can stimulating growth.According to how much bacterium is inoculated with, general 2~4 weeks visible colonies are grown.Bacterium colony is in particle, tubercle or cauliflower Shape, milky or ecru are opaque.Although cultivation high sensitivity but detection cycle is too long, treatment is not only affected adversely, also significantly Increase pipe be broadcast to others risk.
3. auramine O fluorescence colour: after dyeing and redye by auramine O, with the fluorescence microscopy microscopy containing ultraviolet source It looks into, acid-fast bacilli is in glassy yellow, and the substance in other bacteriums and background is in dark yellow, and this method can use low power microscopy, because This can more rapidly find out mycobacteria.There are three types of reagent, three-step approach operations for this method.First step auramine O dyes 15 minutes, rinses Complete second step pickling 2 minutes has been rinsed third step and has been redyed 2 minutes.Entire dyeing course probably needs 20 minutes.
Summary of the invention
The present invention develops a kind of double-formulation in view of the shortcomings of the prior art, carry out improvement optimization to auramine O fluorescence colour The quick antiacid fluorescent dyeing reagent of mycobacterium tuberculosis.Product of the present invention stability is good, two kinds of reagents, only needs two steps to operate and is Achievable dyeing, and dyeing time was reduced to 2 minutes or so by traditional 20 minutes, clinical use is more convenient, quick, significantly Improve the detection efficiency of mycobacterium tuberculosis.
Specific technical solution of the present invention is as follows:
The quick antiacid fluorescent dyeing reagent of a kind of modified form mycobacterium tuberculosis, it is characterised in that including two kinds of reagent A liquid and B Liquid.A liquid includes water, salt, chaotropic agent, moisturizer, fluorescein.B liquid includes water, acid, alcohol, counterstain.
Salt described in A liquid of the present invention is inorganic salts, preferably potassium chloride or sodium chloride.It is preferred that the concentration of alkali is 0.5%-1.0%(W/ V), more preferable 0.9%(W/V).
Chaotropic agent described in A liquid of the present invention is selected from water-miscible organic solvent, preferably dimethyl sulfoxide.The effect of chaotropic agent is dye The solubility and stability of material.It is preferred that the concentration of chaotropic agent is 15-25%(V/V).
Moisturizer described in A liquid of the present invention is selected from glycerol, propylene glycol, one or more of butanediol, preferably glycerine.Moisturizing The effect of agent is to increase solution entirety moisturizing degree and diopter, is intensified, so that dyeing is relatively sharp.It is preferred that moisturizing The concentration of agent is 10-30%(V/V).
Fluorescein described in A liquid of the present invention is selected from acid resistant form fluorescent dye, preferably auramine O, preferred concentration 0.1-0.3%(W/ V).
The acid described in B liquid of the present invention is selected from inorganic acid, preferably hydrochloric acid.Hydrochloric acid plays the decolorization after dyeing, tuberculosis point Branch bacillus is not decolourized due to antiacid characteristic.It is preferred that the concentration of hydrochloric acid is 0.3-0.5%(V/V).
The alcohol described in B liquid of the present invention is selected from monohydric alcohol, preferred alcohol.Preferred concentration is 70-75%(V/V).
Counterstain described in B liquid of the present invention is selected from green basic dye or blue azo dyes.It is preferred that methyl green or ivens Indigo plant, more preferable methyl green, preferred concentration 0.5-1%(W/V).
The present invention makes the detection method for needing the dyeing of three steps originally by improveing to traditional auramine O fluorescence colour It can be realized quick two steps dyeing, and shorten dyeing time, only need go out result within two minutes.Clinical use is more convenient, fast Victory greatly improves the detection efficiency of tubercle bacillus.
Detailed description of the invention
Fig. 1 is reagent of the present invention to the coloration result of sputum specimen, and Fig. 2 is coloration result of traditional auramine O to sputum specimen.
Fig. 3 is reagent of the present invention to the coloration result of lung tissue paraffin section sample, and Fig. 4 is traditional auramine O to lung tissue The coloration result of paraffin section sample.
Specific embodiment
Illustrate specific steps of the invention by the following examples, but is not limited by the example.
Term as used in the present invention generally there are those of ordinary skill in the art usually to manage unless otherwise indicated The meaning of solution.
The present invention is described in further detail combined with specific embodiments below and referring to data.It should be understood that these embodiments are In order to demonstrate the invention, it rather than limits the scope of the invention in any way.
In the examples below, the various processes and method being not described in detail are conventional methods as known in the art.
1 reagent 1 of embodiment: the preparation of the invention patent reagent
A liquid: auramine O powder is dissolved in solution of the concentration for 0.9%(W/V) sodium chloride, sufficiently dissolves, makes the concentration of auramine O 0.1%(W/V), dimethyl sulfoxide and glycerol are added, the concentration 15%(V/V of dimethyl sulfoxide is made), glycerol concentration 20% (V/V).
B liquid: first configuring acid alcohol solution, so that concentration of hydrochloric acid is 0.3%(V/V), concentration of alcohol 75%(V/V).Again to acid Methyl green is added in alcoholic solution, so that concentration is 0.5%(W/V).
Reagent 2: the configuration of traditional auramine O:
A liquid: auramine O powder 0.1g is dissolved in 95% ethyl alcohol of 10ml, and 5% carbolic acid is to 100ml after adding dilution;
B liquid: configuration acid alcohol solution, so that concentration of hydrochloric acid is 3%(V/V), concentration of alcohol 75%(V/V).
C liquid: potassium permanganate powder is dissolved in pure water, makes concentration 0.5%(W/V).
The dyeing of 2 sputum specimen of embodiment
The sputum specimen for choosing the tubercle bacillus positive, is coated on 2 glass slides, uses reagent 1 respectively, and reagent 2 is dyed,.Reagent 1 Operating procedure: after A liquid dyes one minute, after being rinsed with water, B liquid is dyed one minute, mounting microscopically observation after rinsing.Examination 2 operating procedure of agent: A reagent dyeing 15 minutes, after being rinsed with water, B liquid was dyed 2 minutes, after C liquid redyes 1 minute, was added after mounting Coverslip sops up extra dyestuff with paper, then in fluorescence microscopy microscopic observation.Under blue wave band with 410 nm -440nm Observation, tubercle bacillus are in green fluorescence.Two kinds of reagents can make tubercle bacillus mark fluorescent as the result is shown, and reagent of the present invention contaminates The color time is shorter.
The dyeing of 3 lung tissue paraffin section of embodiment
The section preparation for choosing three parts of paraffin embedding is dyed with reagent 1,2 respectively after dewaxing, 1 operating procedure of reagent: A liquid After dyeing one minute, after being rinsed with water, B liquid is dyed one minute, mounting microscopically observation after rinsing.2 operating procedure of reagent: A reagent dyeing 15 minutes, after being rinsed with water, B liquid was dyed 2 minutes, and after C liquid redyes 1 minute, coverslip is added after mounting, will be more Remaining dyestuff is sopped up with paper, then in fluorescence microscopy microscopic observation.It is observed under the blue wave band of 410 nm -440nm, tuberculosis bar Bacterium is in green fluorescence.Two kinds of reagents can make tubercle bacillus mark fluorescent as the result is shown, and the reagent dyeing time of the present invention is shorter.

Claims (9)

1. a kind of quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis, it is characterised in that including two kinds of reagent A liquid and B Liquid;A liquid includes water, salt, chaotropic agent, moisturizer, fluorescein;B liquid includes water, acid, alcohol, counterstain;Water described in A liquid is purifying Water, the salt are inorganic salts, and the chaotropic agent is water-miscible organic solvent, and the moisturizer is water-miscible organic solvent, described Fluorescein is acid resistant form fluorescent dye;Acid described in B liquid is inorganic acid, and the alcohol monohydric alcohol, the counterstain is green alkalinity dye Material or blue azo dyes.
2. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that A liquid institute Stating salt is potassium chloride or sodium chloride;Fluorescein is double triazine amino-stilbene type fluorescent whitening agents.
3. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that A liquid institute Stating chaotropic agent is dimethyl sulfoxide.
4. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that A liquid institute Stating moisturizer is glycerol, propylene glycol, one or more of butanediol.
5. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that A liquid institute Stating fluorescein is auramine O.
6. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that B liquid institute Stating acid is hydrochloric acid.
7. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that B liquid institute Stating alcohol is ethyl alcohol.
8. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that B liquid institute It states counterstain and is selected from one or more of methyl green and Evans blue.
9. the quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis as described in claim 1, it is characterised in that include Two kinds of reagents, A liquid include pure water, sodium chloride or potassium chloride, dimethyl sulfoxide, glycerol, auramine O;B liquid includes pure water, hydrochloric acid, second Alcohol, methyl green or Evans blue.
CN201810810362.5A 2018-07-23 2018-07-23 A kind of quick antiacid fluorescent dyeing reagent of modified form mycobacterium tuberculosis Pending CN108931413A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109799124A (en) * 2019-02-15 2019-05-24 上海皓信生物科技有限公司 A kind of mycobacterium tuberculosis fluorescence acid-fast stain liquid
CN117025717A (en) * 2023-10-08 2023-11-10 江苏美克医学技术有限公司 Acid-fast tubercle bacillus fluorescent staining kit and detection method and application thereof
CN117589543A (en) * 2023-10-26 2024-02-23 珠海贝索生物技术有限公司 Composition for acid-fast bacteria staining, staining method and kit

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CN104388520A (en) * 2014-10-27 2015-03-04 济南百博生物技术股份有限公司 Fluorescent acid-fast staining solution and method for detecting acid-fast bacilli by using same
CN104568551A (en) * 2013-10-18 2015-04-29 苏州微利特生物科技有限公司 Acid resistant staining method
CN106198470A (en) * 2016-06-30 2016-12-07 江苏莱芙时代生物科技有限公司 A kind of fungal detection fluorescence staining liquid and application
CN106323925A (en) * 2016-08-11 2017-01-11 付微 Fluorescence dye for detecting fungus and dermatozoon
CN107246988A (en) * 2017-06-06 2017-10-13 珠海贝索生物技术有限公司 A kind of acid-resisting bacterium colouring method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568551A (en) * 2013-10-18 2015-04-29 苏州微利特生物科技有限公司 Acid resistant staining method
CN104388520A (en) * 2014-10-27 2015-03-04 济南百博生物技术股份有限公司 Fluorescent acid-fast staining solution and method for detecting acid-fast bacilli by using same
CN106198470A (en) * 2016-06-30 2016-12-07 江苏莱芙时代生物科技有限公司 A kind of fungal detection fluorescence staining liquid and application
CN106323925A (en) * 2016-08-11 2017-01-11 付微 Fluorescence dye for detecting fungus and dermatozoon
CN107246988A (en) * 2017-06-06 2017-10-13 珠海贝索生物技术有限公司 A kind of acid-resisting bacterium colouring method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109799124A (en) * 2019-02-15 2019-05-24 上海皓信生物科技有限公司 A kind of mycobacterium tuberculosis fluorescence acid-fast stain liquid
CN117025717A (en) * 2023-10-08 2023-11-10 江苏美克医学技术有限公司 Acid-fast tubercle bacillus fluorescent staining kit and detection method and application thereof
CN117025717B (en) * 2023-10-08 2024-03-22 江苏美克医学技术有限公司 Acid-fast tubercle bacillus fluorescent staining kit and detection method and application thereof
CN117589543A (en) * 2023-10-26 2024-02-23 珠海贝索生物技术有限公司 Composition for acid-fast bacteria staining, staining method and kit

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