CN100357426C - Culture and collection of dermatophagoides pteronyssinus and method for preparing its allergen diagnosis and treatment preparation - Google Patents

Culture and collection of dermatophagoides pteronyssinus and method for preparing its allergen diagnosis and treatment preparation Download PDF

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CN100357426C
CN100357426C CNB2005100933531A CN200510093353A CN100357426C CN 100357426 C CN100357426 C CN 100357426C CN B2005100933531 A CNB2005100933531 A CN B2005100933531A CN 200510093353 A CN200510093353 A CN 200510093353A CN 100357426 C CN100357426 C CN 100357426C
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dermatophagoides pteronyssinus
der
anaphylactogen
allergen
pbs
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CN1763174A (en
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孙劲旅
张宏誉
尹佳
黎明
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Peking Union Medical College Hospital Chinese Academy of Medical Sciences
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Peking Union Medical College Hospital Chinese Academy of Medical Sciences
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Abstract

The present invention discloses a method for culturing and collecting Dermatophagoides pterronyssinus (Der p for short), extracting an allergen of Der p and measuring the content of a first component of the allergen of the Der p (Der pl) in a Der P extracting solution. A double-sanwich monoclonal antibody method is used for measuring the content of the Der pl in the Der p extracting solution. In addition, the present invention also discloses the establishment of a standard serum base of Der p allergic patients and the measurement of the total bioactivity of the allergen of the Der p extracting solution. The method for culturing and collecting the Der p and extracting the allergen of the Der p and the method for measuring the Derpl content in the Der p extracting solution both have the characteristics of convenient operation and high speed.

Description

The preparation method of the cultivation collection of dermatophagoides pteronyssinus and anaphylactogen diagnosis thereof and treatment preparation
Invention field
The invention belongs to the allergy medicine preparation field, especially the extracting method that relates to cultivation, collection method and the dermatophagoides pteronyssinus anaphylactogen of dermatophagoides pteronyssinus (Dermatophagoides pterronyssinus be called for short Der p), the foundation etc. that the present invention also discloses Der p1 Determination on content in the dermatophagoides pteronyssinus extracting solution and set up dermatophagoides pteronyssinus allergy patient standard serum storehouse.
Background of invention
Anaphylactic disease has become influences the healthy major issue of people.Wherein the dirt mite is most important indoor anaphylactogen, and it is a kind of ubiquitous biology, and naked eyes generally be cannot see, mainly be present in the room, as: carpet, pillow, mattress, sofa, curtain.Dirt mite viability is strong, is food with the human body scurf mainly, eliminates also so very difficulty of dust mite allergen.In worldwide, the mite of advantage is dermatophagoides pteronyssinus and dust mite in the room, and main allergic protein component is first component (Der p1).At present, suffer from the dust mite allergy disease, be the sixth-largest chronic disease, sickness rate 20-40% the U.S. 5,000 ten thousand people that have an appointment; Also be ascendant trend year by year in worldwide, 4.8 hundred million people are ill in China, sickness rate 37% (the statistics eighties).
The anaphylactogen preparation can be used in the body of anaphylactic disease, external specific diagnosis and desensitization treatment, is the basis of diagnosis and treatment anaphylactic disease, the good and bad health that directly influences hundreds of millions anaphylactic disease patients of its quality.1998, WHO quited approve of the curative effect and the security of desensitization treatment, pointed out that desensitization treatment is unique methods of treatment that influences the anaphylactic disease nature process, can effectively stop allergic rhinitis to develop into allergic asthma.The development of stdn anaphylactogen preparation and use are the inexorable trends of anaphylactic disease diagnosis and treatment.
At present, external anaphylactogen crude preparation by using is the crude extract that the anaphylactogen raw material is made after extraction, dialysis and sterile filtration, comprise whole allergenic components, it has following shortcoming: 1) be unit with W/V, main sensitization component content instability, biological value and effective constituent that can not the actual response anaphylactogen; 2) criticize between effective constituent variation can reach 1000 times, the accuracy and the security of influence diagnosis and treatment; 3) no quality control standard is unfavorable for pharmaceuticals administration, and the research data between various countries, the geographic product can't compare.Simultaneously, as a sci-tech product that added value is higher, stdn anaphylactogen preparation has huge market, promise well.Entering of external high-quality product, to bring enormous impact to the national anaphylactogen manufacture of China: 1, increase national medical expense and people burden, 2, because regional disparity is different with geographical environment, most external anaphylactogen products are unsuitable for the irritated crowd of China, the external reagent of undue dependence, to make treatment and diagnosis limitation, 3, have a problem of biological safety.
The inventor has formed the present invention through years of researches.Cultural method for the dirt mite has multiple both at home and abroad: the use dried small shrimp or the fish meal that have; The end user's scurf that has; The somebody uses milk powder.These methods all contain a large amount of sensitizing substances.For the allergy patient danger of height is arranged, and form false positive reaction easily.Cultural method of the present invention has been avoided above-mentioned shortcoming, and the risk when having reduced allergy patient's skin test and desensitization treatment has improved the security of clinical treatment greatly.The present invention has also reduced the false positive (promptly having improved the specificity to the dermatophagoides pteronyssinus anaphylodiagnosis greatly) of dermatophagoides pteronyssinus pricking method test when avoiding above-mentioned false positive reaction.The method of collecting the dirt mite both at home and abroad has the lucifuge method, climbs dish method and saturated salt water law.The dirt mite purity that aforesaid method is collected is not high, and saturated brine of the present invention has improved the purity that the dirt mite is collected greatly in conjunction with sieving network method.In addition, the present invention uses proteins extraction and analytical technology, has determined best dermatophagoides pteronyssinus anaphylactogen leaching process; Prepare polyclonal antibody, adopted crossed immunoelectrophoresis to detect the total moiety of anaphylactogen then; Set up dermatophagoides pteronyssinus allergy patient specific IgE antibody storehouse; Iso-electric point and molecular weight according to main sensitization component (first component), adopt molecular sieve and ion exchange technique to carry out initial gross separation, obtain the main anaphylactogen component of relative purifying, adopt high pressure liquid chromatography-mass spectrometry instrument, obtained the main anaphylactogen component of purifying; Verified the aminoacid sequence of main allergic protein with analytical technique of mass spectrum, suppressed the main allergenic components immunocompetence that purifying has been verified in experiment and dermatophagoides pteronyssinus allergy patient specific IgE antibody storehouse with radioimmunity absorption; Prepare monoclonal antibody with the control dermatophagoides pteronyssinus anaphylactogen quality of the pharmaceutical preparations with main allergenic components; In addition, the contriver utilizes the how anti-of preparation voluntarily and the monoclonal antibody control dermatophagoides pteronyssinus anaphylactogen quality of the pharmaceutical preparations, has set up the internal reference product and the internal reference standard of stdn dermatophagoides pteronyssinus anaphylactogen preparation.
Summary of the invention
One object of the present invention is to provide a kind of cultivation and collection method of dermatophagoides pteronyssinus.
Another object of the present invention provides a kind of extracting method of dermatophagoides pteronyssinus anaphylactogen.
A further object of the present invention is for providing a kind of method of measuring Der p1 content in the dermatophagoides pteronyssinus extracting solution.
The objective of the invention is to be achieved through the following technical solutions:
1. the cultivation of dermatophagoides pteronyssinus and collection:
At 20-25 ℃, 70-75% relative humidity is with ventilative plastic culture flask culture dermatophagoides pteronyssinus with cover.Feed is a yeast powder 30%, bean powder: 35.2%, and Semen Maydis powder 3.2%, sugar: 35.2%, lard: 3.7%, VITAMIN and salt prescription (/ 100g feed): Vit A 904.579 IU, VitD 201.729 IU, Vit B1:2.001mg, Vit B2:7.525mg, Vit B6:1.189mg, Vit B12:0.945mg, Vit C:60.519mg, Vit K3:10.490mg, Vit D3:0.755mg, nicotinic acid 9.888mg, vitamin H: 0.040mg, folic acid: 0.312mg, calcium pantothenate: 8.875mg, inositol: 12.104mg, NaCl:103.477mg, FeSO 4: 63.701mg, ZnSO 4: 4.711mg, MnSO 4: 1.705mg, Vit E:10.11mg.Do not contain animal proteinums such as fish meal, dried small shrimp, people's scurf.Collection method: utilize saturated aqueous common salt floating method and 50-200 eye mesh screen to collect or utilize the lucifuge method to collect, the dermatophagoides pteronyssinus that freeze-drying is collected obtains the raw material of dermatophagoides pteronyssinus anaphylactogen stdn preparation.
2. the extracting method of dermatophagoides pteronyssinus anaphylactogen:
Freeze dried dermatophagoides pteronyssinus through the acetone degreasing, is used the dissolving of Coca ' s liquid, the extraction of 1: 10 to 1: 20 ratio (W/V).When extracting earlier 4 ℃ ultrasonic 2-3 time, each 2-3 minute, and then 4 ℃ extracted 4-24 hour, 4 ℃, centrifugal 15 minutes of 10000rpm got supernatant liquor and obtains dermatophagoides pteronyssinus extracting solution stoste through filter paper and the filtration of 0.2 μ m filter.
3. Der p1 Determination on content (double fastener heart monoclonal antibody method) in the dermatophagoides pteronyssinus extracting solution:
To be dissolved in the PBS solution through the anti-Der P1 monoclonal antibody of HPLC purifying.Use NaHCO 3Damping fluid dilutes Der P1 monoclonal antibody to 2 μ g/ml in proportion.Bag is by polyethylene board, overnight incubation.With containing Tween-20, the PBS damping fluid (PBS-T) of pH7.4 is washed plate.
Add the PBS-T that contains B S A, incubated at room.PBS-T washes plate.
The anaphylactogen standard substance or the sample that add dilution.Incubated at room.
Use anaphylactogen standard substance (S T-DP1) proportional diluted to prepare Der P1 typical curve.A1 and B1 hole at enzyme plate add PBS-T, and then add Der P1 standard substance.Mixing shifts some liquid then and enters next PBS-T, forms a plurality of dilution gradients.PBS-T should only be contained as blank in A11, B11, A12, B12 hole.
The conventional dilution of dust or anaphylactogen sample.Wash plate with PBS-T, add the monoclonal antibody of the anti-Der P1 of biotinylation of dilution then.Incubated at room.
Wash plate with PBS-T, add the Streptomycin sulphate ovum protein-peroxidase (S5512 of SigMA company) of dilution then.And then use PBS-T to dilute in proportion.Incubated at room half an hour.
Wash plate with PBS-T, add colour developing then, also will add the H of dilution in proportion during colour developing with Citric Acid phosphoric acid buffer dissolved AB T S 2O 2When the 405nm optical density value is read plate during at 2.0-4.0.
4. set up dermatophagoides pteronyssinus allergy patient standard serum storehouse:
Dermatophagoides pteronyssinus moderate allergy patient's standard: allergic rhinitis is arranged or/and the allergic asthma symptom, it is the 3-4 level that the RAST test (adsorption test of anaphylactogen radioactivity) of the immunoCAP of Sweden Pharmacia Corporation detects the irritated grade of dermatophagoides pteronyssinus (d1).The ultimate principle that RAST detects (RAST FEIA) is: will be coated with the reaction of allergenic solid phase carrier and positive serum, as containing in the serum at the allergenic specific IgE of this kind, then can form immune complex, after hatching and washing, enzyme-added mark anti-IgE antibodies is hatched again, promptly forms the anti-IgE mixture of antigen-IgE-, add substrate after the flushing, this mixture and substrate-function produce fluorescent substance.The content of specific IgE is high more, and the fluorescent absorption value is high more.
Dermatophagoides pteronyssinus moderate allergy patient's collection: according to dermatophagoides pteronyssinus moderate allergy patient's standard, at signature informed consent postscript, collect 20-30 dermatophagoides pteronyssinus moderate allergy patient serum, every example is gathered 20ml serum, after the balanced mix dilution, with contain 0.5% bovine serum albumin bletilla, 0.05% sodium azide solution dilution to light absorption value at 10-30KU/L, the packing of 2ml plastic centrifuge tube, serum is preserved in freeze-drying, is dermatophagoides pteronyssinus allergy patient standard serum storehouse.
5. the total biological activity determination of dermatophagoides pteronyssinus extracting solution anaphylactogen:
By the anaphylactogen gross activity of RAST inhibition test Detection and Extraction liquid, adopt freeze-drying redissolution method to guarantee the constant relatively of anaphylactogen gross activity, the total bioactive unit of anaphylactogen represents with anaphylactogen unit (AU).
Adopt the CAP system of Pharmacia, carry out dermatophagoides pteronyssinus anaphylactogen radioactivity absorption inhibition test (RAST inhibition is called for short the RAST inhibition test).The change and forming on above-mentioned RAST FEIA basis of RAST inhibition test.Be allergy patient's sero-reaction with a series of different certain allergens of measuring with corresponding positive serum earlier promptly, carry out above-mentioned RAST step again,, cause the fluorescent absorption value to descend because allergen has suppressed the specific IgE of some amount in the positive serum.Allergen content is high more, and strong more to the restraining effect of specific IgE, the fluorescent absorption value is low more.
The RAST inhibition test is that it can not reflect the antigenicity of one-component in the anaphylactogen to the analysis of the overall biological activity of dermatophagoides pteronyssinus anaphylactogen (being antigenicity).In the relevant test of dermatophagoides pteronyssinus, the serum pond generally is made up of 10 above patients' serum equivalent.
The RAST inhibition test can adopt each detection system of the method for exempting from of putting, enzyme linked immunosorbent assay, fluorescence enzyme linked immunosorbent assay to measure.Because the CAP system has higher sensitivity and specific degree, and is easy and simple to handle, so the present invention adopts the external anaphylactogen detection system of the UniCAP of Sweden Pharmacia Corporation to carry out.
6. the mensuration of dermatophagoides pteronyssinus allergenic components:
Adopt SDS-PAGE to detect the protein component of dermatophagoides pteronyssinus extracting solution, Western Blotting detects the main anaphylactogen composition of dermatophagoides pteronyssinus, wherein, one anti-is the standard serum in the standard serum storehouse, and the result shows and contains 24KD and two kinds of protein components of 14KD at least.
7. the preparation of dermatophagoides pteronyssinus anaphylactogen pricking method liquid:
After obtaining qualified dermatophagoides pteronyssinus extracting solution, the glycerine that adds equivalent in 1: 1 ratio, 0.4% phenol, the content that employing freeze-drying redissolution method is guaranteed Der p1 in the extracting solution is divided in then and promptly makes dermatophagoides pteronyssinus pricking method liquid in the pricking method liquid bottle at 100-200 μ g/ml.
8. the preparation of dermatophagoides pteronyssinus allergen desensitization preparation: after obtaining qualified dermatophagoides pteronyssinus extracting solution,, be prepared into the dermatophagoides pteronyssinus desensitization preparation of a series of different concns by different Dilution ratio adding Coca ' s liquid and 0.4% phenol.The total volume of every bottle of dermatophagoides pteronyssinus desensitization preparation can be different, to reach the purpose that makes things convenient for patient and saving.In the dermatophagoides pteronyssinus desensitization preparation, the maximum concentration content of Der p 1 is 20 μ g/ml.
9. dermatophagoides pteronyssinus anaphylactogen pricking method liquid acute toxicity test: before glycerol adding, carry out the acute toxicity test of dermatophagoides pteronyssinus anaphylactogen pricking method liquid, get 56 week-8 weeks, body weight is in the BALB/c mouse of 17-22 gram, injection 0.5ml dermatophagoides pteronyssinus anaphylactogen pricking method liquid stoste in every mouse peritoneal, observed for 1 week, according to whether having dead mouse to judge the toxicity of anaphylactogen pricking method liquid.
Description of drawings
Fig. 1: the enzyme plate synoptic diagram, 1%BSA PBS-T is only contained as blank in A11 wherein, B11, A12, B12 hole.A1 to A10, B1 to B10 hole is the multiple hole of the standard curve determination of Der p1 standard substance, and its content is from 250 to 0.5ng/ml proportional diluted.
Embodiment 1: Der p1 Determination on content in the dermatophagoides pteronyssinus anaphylactogen extracting solution
Through the anti-Der P1 monoclonal antibody 5H8 of HPLC purifying is that concentration with the 2mg/ml storing solution is dissolved in the PBS solution.With the NaHCO3 damping fluid of 50mM pH9.6, by 1: the 1000 anti-Der P1 of dilution proportion monoclonal antibody 5H8 (i.e. 10 μ l/10ml) Der P1 monoclonal antibody to 2 μ g/ml.Bag is by polyethylene board, 4 ℃ of overnight incubation.With containing 0.05%Tween-20, the PBS damping fluid (PBS-T) of pH7.4 is washed plate 3 times.
Add the PBS-T100 μ l/ hole contain 1%B S A, incubated at room half an hour.PBS T washes plate 3 times.
The anaphylactogen standard substance or the sample that add the dilution of 100 μ l/ holes.Incubated at room 1 hour.
Use anaphylactogen standard substance (S T-DP1) proportional diluted to prepare Der P1 typical curve.The dilution range of Der P1 standard substance is 0.5-250ng/ml.A1 and B1 hole at enzyme plate add the PBS-T of 180 μ l 1%B S A, and then add 20 μ l Der P1 standard substance.Mixing shifts 100 μ l liquid then and enters the PBS-T that the next one contains 100 μ l 1%B S A, forms 10 dilution gradients.1%B S A PBS-T should only be contained as blank in A11, B11, A12, B12 hole.
The conventional 2 times of dilutions of dust or anaphylactogen sample were from 1: 10 to 1: 80.
Wash plate 3 times with PBS-T, add the monoclonal antibody 4 C l (BI-4 C 1) of the anti-Der P1 of biotinylation of 100 μ l dilution then.This antibody-solutions contains 50% glycerine, should use 1%B S A PBS-T by 1: 1000 dilution proportion (that is: 10 μ l/10ml).Incubated at room 1 hour.
Wash plate 3 times with PBS-T, add the Streptomycin sulphate ovum protein-peroxidase (the S i g MA S of company 5512 uses 1ml distilled water redissolution 0.25mg powder) of 100 μ l dilution then.And then use 1%B S A PBS-T by 1: 1000 dilution proportion (that is: 10 μ l/10 ml).Incubated at room half an hour.
Wash plate 3 times with PBS-T, add 100 μ l then, also will add 30%H during colour developing by 1: 1000 dilution proportion with 70m MpH7.4 Citric Acid phosphoric acid buffer dissolved 1m MAB T S colour developing 2O 2(that is: 10 μ l/10ml AB T S).When the 405nm optical density value is read plate during at 2.0-4.0.
Der P1 standard substance contain 2500ng/ml Der P1, and through with the contrast standardization of the dermatophagoides pteronyssinus reference standard product (N I B S C 82/518) of WHO/IUIS.The Der P1 content that the dermatophagoides pteronyssinus reference standard product of WHO/IUIS (N I B S C 82/518) contain is 12.5 μ g/ml.
Embodiment 2: the total bioactive mensuration of anaphylactogen in the dermatophagoides pteronyssinus anaphylactogen extracting solution
1). the foundation in dermatophagoides pteronyssinus anaphylactogen serum pond
Standard according to dermatophagoides pteronyssinus moderate allergy patient, at signature informed consent postscript, collect 30 dermatophagoides pteronyssinus moderate allergy patient serum, every example is gathered 20ml serum, after the balanced mix dilution, with contain 0.5% bovine serum albumin bletilla, 0.05% sodium azide solution dilution to light absorption value at 10-30KU/L, the packing of 2ml plastic centrifuge tube, serum is preserved in freeze-drying, is dermatophagoides pteronyssinus allergy patient standard serum storehouse.
2). reagent: 1 * PBS:
Final concentration Concrete amount (1L)
NaCl KCl Na 2HPO 4·7H 2O KH 2PO 4 137mM 2.7mM 4.3mM 1.4mM 8g 0.2g 1.15g 0.2g
3). material
A). allergen to be checked is the dermatophagoides pteronyssinus anaphylactogen that Trizol extracts, and mixes with dehydrated alcohol to be placed on-40 ℃ of refrigerators preservations, and 10000g * 10min gets precipitation and redissolves with 1 * PBS original volume
B). dermatophagoides pteronyssinus allergen CAP, dust mite allergen CAP
C). anti-IgE CAP: identical with above-mentioned CAP, but the cellulose grain bonded is not an allergen, but the sheep anti human IgE, for the drawing standard curve
D) .IgE standard substance: have 6 concentration, be respectively 0.35,0.7,3.5,17.5,50 and 100KUa/L.
E). the mouse anti human IgE (ELIAS secondary antibody) of enzyme labelling, used enzyme are beta-galactosidase enzymes (β-galactosidase)
F). substrate is 4-methyl umbrella osmanthus-beta galactose glycosides (4-Methylumbelliferyl-β-D-galactoside)
G). stop buffer is that sodium carbonate solution, washing fluid are PBS solution
4). instrument
Adopt full-automatic UniCAP 100 System of Pharmacia, function software is UniCAP100version1.61/009.
5). working method
A). the dilution of dermatophagoides pteronyssinus immersion liquid: original liquid concentration is 8.9mg/ml, dilutes to be 0.0089mg/ml 0.089mg/ml, 0.89mg/ml and 8.9mg/ml, i.e. 10-3,10-2,10-1 and stoste respectively with 1 * PBS.
B). the inhibition of positive serum: get 7 of Eppendoff pipes, positive serum 20 μ 1 that every pipe all adds after the redissolution add dermatophagoides pteronyssinus immersion liquid 160 μ l respectively,, under 4 ℃ condition, hatched 12 hours
C). get negative serum 20 μ l simultaneously, add 1 * PBS160 μ l, by above-mentioned same processing, as negative control
D). input test sample project: comprise 12 the anti-IgECAP and dermatophagoides pteronyssinus and the dust mite sIgECAP that are used for the production standard curve.
E). add serum sample and IgE standard substance (every kind of concentration is all double).
F). add reagent: the sheep anti human IgE (ELIAS secondary antibody) of enzyme labelling, beta-galactosidase enzymes (β-galactosidase), substrate: 4-methyl umbrella osmanthus-beta galactose glycosides (4-Methylunbelliferryl-β-galactosidase), stop buffer, washing fluid and attached liquid thereof.
G). the fluorescence absorbance of each test sample book of computer automation testing.
H). the absorbancy and the corresponding concentration of IgE standard substance are depicted as typical curve on semilogarithmic paper.
I). read corresponding sIgE content according to the serum fluorescence absorbance that records on typical curve, above-mentioned two steps are finished by computer.
J). the method for the RAST that provides by CAP System is to positive serum, and the positive serum after the inhibition, negative serum carry out dermatophagoides pteronyssinus sIgE to be measured, and writes down its light absorption value.
K). use IgE standard substance preparation standard curve simultaneously
6. data processing
A). deduct the absorbance of negative control respectively with the positive serum absorbance after positive serum (positive serum OD value is the OD value of positive serum 20 μ l+PBS60 μ l mixed solutions) and the inhibition
B). to use a). income value is the maximum absorbance value divided by the serum absorbance that does not suppress with allergen
C). deduct b with 100%). gained ratio is the percentage (being called for short RAST inhibition test percentage) that the absorption of anaphylactogen radioactivity suppresses
D). the logarithm of used allergic effect commercial weight is made independent variable(s) when handling with serum sample, and RAST inhibition test percentage is a dependent variable, does straight-line regression on semilogarithmic paper, and RAST is suppressed curve carry out the t check analysis.
RAST inhibition test percentage will reach more than 50%.
Embodiment 3: the acute toxicity test of dermatophagoides pteronyssinus anaphylactogen pricking method liquid
Before and after glycerol adding, carry out the acute toxicity test of dermatophagoides pteronyssinus anaphylactogen pricking method liquid respectively, get 56 week-8 weeks, body weight is in the BALB/c mouse of 17-22 gram, injection 0.5ml dermatophagoides pteronyssinus anaphylactogen pricking method liquid stoste in every mouse peritoneal, observed for 1 week, according to whether having dead mouse to judge the toxicity of anaphylactogen pricking method liquid.The acute toxicity test of dermatophagoides pteronyssinus anaphylactogen pricking method liquid shows: the mouse all if qualified dermatophagoides pteronyssinus pricking method liquid carries out acute toxicity test after adding glycerine is all dead; Its reason may be oozed environment for glycerine causes occurring in the mouse peritoneal height, causes the mouse Q volume of blood to reduce, dewater, and produces hypovolemic shock and death.The pathological biopsy of these mouse peritoneals and pathological section are not found other organic disease.If carry out acute toxicity test before the adding glycerine then qualified dermatophagoides pteronyssinus pricking method liquid does not have dead mouse.
Embodiment 4: the sensitivity and the specific degree of dermatophagoides pteronyssinus anaphylactogen stdn pricking method liquid.
Carry out the clinical pricking method test of the dermatophagoides pteronyssinus anaphylactogen stdn pricking method liquid of 1000 examples in transformation reactions section of BJ Union Hospital.The each patient accepts the pricking method test and whether has dermatophagoides pteronyssinus allergy with diagnosis at signature informed consent postscript.Used select pricker be Tsing-Hua University produce select pricker (the accurate font size of medical device: No. the 1010015th, Soviet Union's salt pencil tool (standard) word 2004).Clinical pricking method test through the dermatophagoides pteronyssinus anaphylactogen stdn pricking method liquid of 500 examples shows: with at present, internationally recognized dermatophagoides pteronyssinus external detection method hypersensitive relatively, the sensitivity of this stdn pricking method liquid is 91%, the specific degree degree is 92%.

Claims (2)

1. method of extracting the dermatophagoides pteronyssinus anaphylactogen, it comprises step:
A). at 20-25 ℃, under the 70-75% relative humidity condition, with ventilative plastic culture flask culture dermatophagoides pteronyssinus with cover;
B). utilize saturated aqueous common salt floating method and 50-200 eye mesh screen to collect freeze-drying;
C). the freeze-drying dermatophagoides pteronyssinus is carried out the acetone degreasing, use the dissolving of Coca ' s liquid, the extraction of 1: 10 to 1: 20 ratio (W/V).
2. according to the method for claim 1, it is characterized in that: during extraction earlier 4 ℃ ultrasonic 2-3 time, each 2-3 minute, and then 4 ℃ extracted 4-24 hour, centrifugal 15 minutes of 4 ℃ of following 10000rpm got supernatant liquor through filter paper and the filtration of 0.2 μ m filter.
CNB2005100933531A 2005-08-26 2005-08-26 Culture and collection of dermatophagoides pteronyssinus and method for preparing its allergen diagnosis and treatment preparation Expired - Fee Related CN100357426C (en)

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