WO2003025207A1 - Dispositif et procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives - Google Patents
Dispositif et procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives Download PDFInfo
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- WO2003025207A1 WO2003025207A1 PCT/FR2002/003132 FR0203132W WO03025207A1 WO 2003025207 A1 WO2003025207 A1 WO 2003025207A1 FR 0203132 W FR0203132 W FR 0203132W WO 03025207 A1 WO03025207 A1 WO 03025207A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/40—Concentrating samples
- G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
- G01N33/569—Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/86—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood coagulating time or factors, or their receptors
Definitions
- the subject of the present invention is a method of concentrating pathogenic germs possibly present in blood products or derivatives, as well as the detection of said germs thus concentrated in order to carry out a control of the pathogenicity of said blood products.
- blood product is meant whole blood, like any preparation resulting from the fractionation thereof, comprising or not cellular components, for example, blood product means concentrates of red blood cells or of platelets, but also plasma or serum preparations.
- the method according to the invention is remarkable in that it is carried out directly on a sample from a blood product taken from a subject, without preliminary treatment or dilution.
- the method for detecting pathogenic germs developed by the Applicant essentially consists in selectively concentrating said pathogenic germs, then in detecting them, once concentrated, by techniques known to those skilled in the art.
- the selective concentration of pathogenic germs is carried out by sequential or simultaneous elimination of the different populations of blood cells present in a sample of a blood product.
- the method for concentrating pathogenic germs comprises a first step for concentrating pathogenic germs consisting in reducing the concentration of the populations of blood cells by means of a selective aggregation of these, followed by filtration in order to collect in the filtrate the non-aggregated concentrated pathogens and to retain on the filter the aggregates of blood cells.
- an aggregate means any action leading to the formation of cellular aggregates
- cellular aggregate means any group of cells comprising more than two cells and whose size is greater than that of an isolated cell.
- an aggregate can be obtained either by aggregation, such as the aggregation of platelets subsequent to their activation, an agglutination, such as the agglutination of red blood cells obtained when the latter are in the presence of particular molecules, either a bringing together of the cells induced by a change in the electrostatic charge of their membranes or even other mechanisms of adhesion or cellular bringing together leading to the regrouping of more than two cells.
- the aggregation of the different populations of blood cells can be carried out using compounds which induce platelet aggregation, or else using compounds which induce the specific agglutination of red blood cells. It is known, for example, that, in the presence of certain compounds, platelets have the capacity to aggregate. These aggregates can be easily separated from pathogenic germs by filtration.
- Red blood cells also have some agglutination properties.
- the method for concentrating pathogenic germs according to the invention optionally comprises a second step of reducing the concentration of the populations of the majority cells in the blood, namely platelets and red cells, consisting in lysing the isolated cells which are not aggregated during the first step of aggregation.
- This second step of reducing the concentration of the populations of blood cells allows a reduction of the order of 4 log (from 10 9 to 10 5 cells / ml) with regard to the concentration of platelets and of the order of 5 log (from 10 10 to 10 5 ) regarding the concentration of red blood cells.
- the subject of the invention is a process for the concentration of contaminating germs possibly present in a blood product comprising blood cells, characterized in that it comprises the following steps: a) a sample of said blood product is subjected to a treatment of aggregation of blood cells, b) the aggregates formed in step (a) are eliminated by passing the treated sample through a first filter allowing the contaminating germs to pass but not the cell aggregates, c) the cells are selectively lysed residual of the filtrate obtained in step (b), d) the contaminating germs are recovered by passing the lysate from step (c) over a second filter allowing cell debris to pass.
- the method of the invention comprises an additional step of analysis of the second filter to detect any contaminating germs possibly retained.
- the detection method according to the invention comprises the addition of a labeling agent for contaminating germs, that is to say during the aggregation of the step (a), either during the lysis of step (c), or directly on the second filter during step (e) of analysis.
- agent for labeling pathogenic germs detectable by the method of the invention mention may be made of a labeling solution comprising an esterase substrate such as ChemChrome
- an agent for labeling pathogenic germs detectable by the method of the invention it is possible to use a labeling solution comprising a labeled antibody or a marker for nucleic acids.
- the marker will be fluorescent or coupled to a fluorochrome or to an enzyme allowing the degradation of a substrate made thus fluorescent, possibly the fluorescence will be detected by a laser excitation.
- the detection method according to the invention also comprises the addition of a permeabilizing agent for contaminating germs, which can be added to at least one of the steps of the method, ie during the aggregation of step (a ), either during the lysis of step (c), or directly on the second filter during step (e) of analysis, or in several of them.
- a permeabilization agent for contaminating germs mention may be made of polyethyleneimine, chlorhexidine diacetate, chlorhexidine digluconate, ethylene diamine tetracetate acid (EDTA) alone or in combination with nisin as well as detergents such as N-Octyl ⁇ -D-glucopyranoside, SDS, T een, triton, Brij, etc.
- the blood cells of the product blood are platelets or red blood cells or a mixture of these.
- the blood cells of the blood product are platelets and the aggregation treatment of step (a) comprises bringing the sample into contact with a composition of aggregation comprising at least one of the aggregation agents chosen from the group comprising: an antibody specific for a platelet antigen, a strong agonist for platelet activation, chosen from: thrombin, TRAP (thrombin receptor activating peptide), trypsin, collagen, thromboxane A2, PAF (platelet activating factor), ionophore A23187.
- a weak platelet activation agonist chosen from ADP, adrenaline, arachidonic acid, Von Willebrand factor, serotonin or epinephrine.
- the concentration of CD9 type antibody specific for a platelet antigen in the aggregation composition is between 0.5 ⁇ g / ml and
- 100 ⁇ g / ml 100 ⁇ g / ml, and preferably it is between 5 ⁇ g / ml and 40 ⁇ g / ml.
- the concentration of strong agonist in the aggregation composition is between:
- the concentration of weak agonist in the aggregation composition is between:
- the antibody specific for a platelet antigen is chosen from: an anti-CD9, CD32, anti-PTA1, CD42, anti-GpIIb / IIIa or anti-GpIV antibody.
- the blood product comprises red blood cells and the aggregation treatment of step (a) comprises bringing the sample into contact with an agglutination composition comprising at least one agglutination agent chosen from lectins, polyethyleneimine, polyvinylpyrrolidone (PVP), gelatins, dextrans or polyethylene glycols (PEG).
- an agglutination composition comprising at least one agglutination agent chosen from lectins, polyethyleneimine, polyvinylpyrrolidone (PVP), gelatins, dextrans or polyethylene glycols (PEG).
- said lectins exhibit erythroagglutinin activity.
- the lectins are chosen from the lectins of Phaseolus vulgaris, Vicia sativa, Vicia faba or Erythrina corallodendron., Lens culinaris, Phytolacca Americana, Triticum vulgaris.
- the concentration of phaseolus vulgaris type lectin in the agglutination composition is between 10 ⁇ g / ml and 200 ⁇ g / ml.
- the concentration of polyethyleneimine in the agglutination composition is between 0.1% (weight / volume) and 40% (weight / volume)
- said dextrans are chosen from Dextran 70, Dextran 100, Dextran 500, etc.
- the concentration of dextran in the agglutination composition is between 0.1%
- said PEGs are chosen from PEG35, PEG, etc.
- the concentration of PEG in the agglutination composition is between 0.05% (weight / volume) and 40% (weight / volume).
- the concentration of gelatin in the agglutination composition is between 0.5% (weight / volume) and 40% (weight / volume).
- said PVP are chosen from PVP-40, PVP-360, etc.
- the concentration of PVP in the agglutination composition is between 0.05% (weight / volume) and 40% (weight / volume).
- the lysis of the cells of step (c) is carried out with a lysis solution comprising one or more detergents chosen from the group comprising: saponin, SDS, Tween 20, Triton X100,
- the lysis solution consists of a mixture of saponin, Triton X100 and
- the lysis solution comprises saponin at a concentration (expressed in% w / v) between 0.005% and 0.5%, Triton X100 at a concentration (expressed in% w / v) between 0.001% and 0.5% of Tween 20 at a concentration between 0.01% and 1%, of N-Octyl ⁇ -D-glucopyranoside at a concentration between 0.1% and 0.5%.
- the permeabilization of the bacteria is carried out with a solution comprising one or more reagents chosen from the group comprising: Chlorhexidine (digluconate, diacetate), Polyethylenimine, N-Octyl ⁇ -D-glucopyranoside, Nisin alone or in combination with EDTA .
- the permeabilizers are used for chlorhexidine at a concentration (weight / volume) of between 0.001% (weight / volume) and 0.1% (weight / volume), for polyethyleneimine a concentration between 5 ⁇ g / ml and 120 ⁇ g / ml, for N-Octyl ⁇ D-glucopyranoside at a concentration between 0.1% (weight / volume) and 0.5% (weight / volume) and for Nisin between 0.1 ⁇ g / mL and 0.5 ⁇ g / mL alone or in combination with EDTA at a concentration between 1 mM and 10 mM.
- the method of the invention can be used to concentrate and detect numerous germs contaminating blood products, among which there may be mentioned aerobic or anaerobic bacteria, molds, yeasts, spores of living and / or dead bacteria.
- the pore size of the first filter used in the method of the invention is between 2 ⁇ m and 20 ⁇ m.
- the pore size of the second filter used in the process of the invention is between 0.2 ⁇ m and 2 ⁇ m.
- step (e) of the process of the invention is carried out in a closed device.
- the contaminating germs capable of being concentrated according to the process of the invention are chosen from the group of aerobic or anaerobic bacteria, molds, yeasts or spores of living and / or dead bacteria, the pore size of the first filter is between 2 ⁇ m and 20 ⁇ m, and the pore size of the second filter is between 0.2 ⁇ m and 2 ⁇ m.
- the subject of the invention is also a device for the concentration and labeling of contaminating germs possibly present in a blood product comprising blood cells, capable of being implemented in the method for detecting pathogenic germs of the invention comprising:
- first sealed and sterile reservoir (1) containing at least one agent for aggregating blood cells and optionally at least one agent for labeling pathogenic germs,
- a second sealed and sterile reservoir (2) containing at least one agent for lysis of blood cells and possibly at least one agent for marking pathogenic germs, - a first filter (3) placed between the first and the second reservoir capable of retaining the aggregates formed in said first reservoir,
- a second filter (4) placed downstream of the second tank capable of retaining any contaminating pathogenic germs, sealed and sterile connection means (5) placed between the first tank (1) and the first filter (3), between the first filter (3) and the second tank (2) and between the second tank (2) and the second filter (4).
- the device of the invention comprises sealed and sterile connection means (6) for connecting the bag containing the blood product to the first sterile reservoir (1).
- the sealed and sterile connection (6) connecting the bag containing the blood product to the first sterile tank is fitted with a non-return valve (7).
- the device of the invention comprises means for sampling a determined volume of blood product directly from a storage bag for said product towards said first reservoir (1).
- the first sealed and sterile reservoir (1) of the device of the invention is provided with a suction system (8) for the sample, and preferably said suction system is a piston.
- the second filter (4) of the device of the invention is included in a membrane support composed of two parts which can be separated making it possible to recover said filter.
- the device of the invention is closed and sterile.
- FIG. 1 illustrates the enumeration of platelets after having brought the platelet concentrates into contact with different concentrations of thrombin.
- FIG. 2 illustrates the enumeration of platelets after aggregation in the presence of ADP for 2 platelet samples.
- FIG. 3 shows the platelet count in the presence of CD9 antibody (clone SN4) for 4 platelet samples.
- FIG 4 shows the results of the platelet count in the presence of doses of CD9 antibodies (clone 6B1) used on 3 L of platelet concentrate.
- FIG. 5 shows the dose response curve obtained in the presence of increasing concentrations of CD9 antibody (clone SN4).
- FIG. 6 illustrates the agglutination of red blood cells in the presence of the lectin Phaseolus vulgaris used at a concentration of 200 ⁇ g / ml for 3 samples of concentrated red blood cells.
- FIG. 7 shows the effects of the lysis solution on the recovery of different pathogens in pure cultures.
- FIG. 9 illustrates the effect of lysis on the erythrocyte count of two different samples of red blood cell concentrates.
- FIG. 10 illustrates the enumeration of Escherichia coli bacteria in a platelet sample using polyethylene imine (PEI) as a permeabilizing agent to increase the penetration of the marker.
- PEI polyethylene imine
- FIG. 11 illustrates the effect of the concentration of N-octyl ⁇ D-glucopyranoside in the lysis solution on cultures of pure bacteria.
- FIG. 12 illustrates a particular implementation of the device for concentrating pathogenic germs of the invention, comprising: - a first sealed and sterile reservoir (1),
- first sterile filter (3) placed between the first reservoir (1) and the second reservoir (2)
- second sterile filter (4) placed downstream of the second reservoir (2) of the sealed and sterile connection means (5) placed, between the first reservoir (1) and the first filter (3), between the first filter (3 ) and the second tank (2) and between the second tank (2) and the second filter (4).
- sealed and sterile connection means (6) for connecting the bag containing the blood product to the first reservoir (1).
- non-return valve (7) placed in the connection (6) connecting the bag containing the blood product to the first reservoir 1.
- Thrombin is a strong agonist in platelet aggregation.
- thrombin solutions (reference T8885 Sigma) were prepared: at a concentration of 100 IU / ml when used at the rate of 10 IU / test and in the form of a dilute solution (100 ⁇ l of thrombin stock solution added with 900 ⁇ l of PBS buffer), when it is used at a rate of 1 IU / test.
- Platelet aggregation via thrombin involves the following steps: - 160 ⁇ l of platelet concentrate are placed in a tube to which 20 ⁇ l of PBS buffer and 20 ⁇ l of thrombin are added
- the contents of the tubes are filtered on a filter with a porosity of 11 ⁇ m.
- Table 1 illustrates the results obtained and represents the number of platelet aggregates obtained in the presence of thrombin used at two different concentrations and Figure 1 in the appendix graphically illustrates these results.
- Example 2 Aggregation of platelets with thrombin in the presence of pathogenic germs.
- the experimental work carried out to assess the aggregation of pathogenic germs in the presence of thrombin includes the following stages: - An E. Coli cryosphere is introduced into a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- Table 2 shows the aggregation of platelet concentrates with thrombin in the presence of E. col i.
- Example 3 Aggregation of platelets in the presence of a weak agonist: ADP.
- ADP (SIGMA) is used at a concentration of 200 ⁇ M in distilled water.
- the experimental work carried out to assess the aggregation of platelets in the presence of ADP includes the following stages:
- Example 4 Platelet aggregation with ADP in the presence of pathogenic germs.
- the aggregation of platelets in the presence of ADP comprises the following steps: - A Stob epidermidis cryobead is introduced into a 9 ml tube of tryptone soy broth and incubated at 37 ° C. for 18-24 hours. On 400 ⁇ l of platelet concentrate, 50 ⁇ l of the suspension of Staph epidermidis and 50 ⁇ l of ADP are added,
- Pathogens are seeded at a high concentration to increase a possible trapping effect.
- ADP is added to platelets and bacteria at a concentration of 10 ⁇ M.
- Example 5 Aggregation of platelets in the presence of a CD9 antibody.
- CD9 antibody induces the activation of platelets and therefore their aggregation.
- the tests described were carried out with two CD9 clones, the SN4 clone (Ancel, ref 156-020, concentration
- the selective aggregation process implemented with this CD9 antibody comprises the following steps:
- the CD9 antibody (clone SN4) was used in the presence of the platelets at a final concentration of 10 ⁇ g / ml.
- Figure 2 in the appendix illustrates the aggregation of platelets obtained in the presence of CD9 antibodies (clone SN4).
- Figures 3 and 5 show respectively the results of the aggregated platelet count in the presence of increasing doses of CD9 antibody (clone SN4) and the dose-response curve thus obtained.
- the counting of residual platelets is carried out with the Analyzer.
- the platelet count is carried out as described above.
- Figure 4 in the appendix shows the results of the aggregated platelet count in the presence of increasing doses of CD9 antibody (clone 6B1).
- Example 6 Platelet aggregation with the CD9 antibody in the presence of bacteria.
- a Staph epidermidis cryobead is introduced into a tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- Dilutions are carried out in series: 4 1/10 dilutions - Filter 100 ⁇ l of the sample on a CB04 membrane
- Table 4 illustrates the aggregation of platelets with CD9 in the presence of bacteria.
- Lectins are glycoproteins of non-immune origin which agglutinate cells and / or precipitate carbohydrate complexes. These molecules commonly bind to specific carbohydrates.
- the lectin Phaseolus vulgaris PHA-E (Sigma) was used at a concentration of 2 mg / ml in PBS.
- the lectin Vicia Activa (Sigma) was used at the concentration of 1 mg / ml.
- red blood cells are placed in tubes to which 50 ⁇ l of PBS and 50 ⁇ l of Phaseolus vulgaris are added,
- Dilutions are carried out in series: 4 1/10 dilutions
- Figure 6 in the appendix shows the agglutination of red blood cells obtained in the presence of Phaseolus vulgaris.
- Phaseolus vulgaris was used at a concentration of 200 ⁇ g / ml.
- An E.coli cryobead is introduced into a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- the applicant has perfected the various selective lysis techniques allowing the elimination of blood cells without affecting the concentration of bacteria possibly present in the samples to be analyzed.
- Example 1 Effect of the formulation of the lysis solution on cultures of pure bacteria. Method - The strains are stored in a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- the recovery percentages are consistent with the predefined forecasts, between 95 and 115%, except for Ps. aeruginosa and Bacillus cereus.
- Example 2 Effect of the formulation of the lysis solution on the bacteria seeded in platelets.
- aureus Bacillus cereus and Staph strains. aureus were seeded in platelets in 50 ml tubes using a concentration of 10 5 cells in 20 ml of platelets. - These 50 ml tubes are kept in the platelet incubator at 22 ° C for several days,
- the bacteria were seeded at an initial concentration of 5 10 3 cells / ml and are detected several days later at concentrations of the order of 10 s to 10 9 cells / ml.
- Example 2b Effect of the formulation of the lysis solution on cultures of pure bacteria.
- strains are stored in a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- Example 3 Effect of the formulation of the lysis composition on the red blood cells.
- red blood cells is diluted in 9 ml of lysis solution or 9 ml of PBS (control).
- the samples, lysed or not, are analyzed using a cell counter.
- Figure 9 shows the results obtained on the preparation of lysed red blood cells compared to a preparation of non-lysed red blood cells.
- Example 4 Effect of the formulation of the lysis composition on the platelets. The reproducibility of the efficiency of the lysis solution was tested. Different samples of platelets were lysed and analyzed.
- Figure 8 in the appendix illustrates the results of the lysis obtained with different samples of platelets.
- the preparation of the sample by concentration of pathogenic germs in two stages includes:
- E.coli cryobead is introduced into a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- the first step of aggregation is carried out as follows:
- the second lysis step is then carried out:
- Example 2 Specific separation of red blood cells.
- E.coli cryobead is introduced into a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- the agglutination step is carried out as follows:
- the second lysis step is then carried out:
- Dilutions are carried out in series: 4 1/10 dilutions
- Table 9 shows the results obtained with the enumeration of bacteria carried out after the step of agglutination of red blood cells with lectin followed by the lysis step.
- Labeling solutions can be prepared from an esterase substrate and used in the detection method of the invention according to the following protocol a) Preparation
- a labeling solution comprising a labeled antibody can be used in the detection method of the invention according to the following protocol
- Example 3 Interest of adding a bacteria permeabilization agent to improve the penetration of the marker.
- strains are stored in a 9 ml tube of tryptone soy broth and incubated at 37 ° C for 18-24 hours.
- the sample is filtered through a filter with a porosity of 5 ⁇ m
- the sample is incubated in the lysis solution (Chlorhexidine 5. 10- 3 %, NOG 0, 5%, Nisin 0, 2 ⁇ g / mL,
- Triton X 100 Triton X 100.
- red blood cell concentrates 1) Agglutination step with a lectin such as for example Phaseolus vulgaris,
- the labeling and permeabilization of pathogenic germs can intervene indiscriminately during the aggregation step, during the lysis step or directly on the germs concentrated on the last filter before analysis.
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Abstract
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Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2459761A CA2459761C (fr) | 2001-09-13 | 2002-09-13 | Dispositif et procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives |
| AU2002347236A AU2002347236B2 (en) | 2001-09-13 | 2002-09-13 | Device and method for concentration and detection of pathogenic germs from blood products and/or their derivatives |
| JP2003529979A JP4351048B2 (ja) | 2001-09-13 | 2002-09-13 | 血液製剤及び/又はその派生物からの病原菌の濃縮及び検出装置及び方法 |
| IL16048202A IL160482A0 (en) | 2001-09-13 | 2002-09-13 | Device and method for concentration and detection of pathogenic germs from blood products and/or their derivatives |
| EP02783159A EP1432812B1 (fr) | 2001-09-13 | 2002-09-13 | Dispositif et procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives |
| DE60225459T DE60225459T2 (de) | 2001-09-13 | 2002-09-13 | Vorrichtung und verfahren zur konzentration und zum nachweis pathogener keime aus blutprodukten und/oder ihrer derivate |
| US10/795,873 US8507237B2 (en) | 2001-09-13 | 2004-03-08 | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
| US13/915,535 US8822211B2 (en) | 2001-09-13 | 2013-06-11 | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR01/11873 | 2001-09-13 | ||
| FR0111873A FR2829500B1 (fr) | 2001-09-13 | 2001-09-13 | Procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives et dispositif pour le mettre en oeuvre |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/795,873 Continuation US8507237B2 (en) | 2001-09-13 | 2004-03-08 | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003025207A1 true WO2003025207A1 (fr) | 2003-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2002/003132 Ceased WO2003025207A1 (fr) | 2001-09-13 | 2002-09-13 | Dispositif et procede de concentration et de detection de germes pathogenes a partir de produits sanguins et/ou de leurs derives |
Country Status (12)
| Country | Link |
|---|---|
| US (2) | US8507237B2 (fr) |
| EP (2) | EP1983343B1 (fr) |
| JP (1) | JP4351048B2 (fr) |
| CN (1) | CN1555418A (fr) |
| AT (2) | ATE508199T1 (fr) |
| AU (1) | AU2002347236B2 (fr) |
| CA (1) | CA2459761C (fr) |
| DE (2) | DE60225459T2 (fr) |
| ES (1) | ES2302855T3 (fr) |
| FR (1) | FR2829500B1 (fr) |
| IL (1) | IL160482A0 (fr) |
| WO (1) | WO2003025207A1 (fr) |
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| WO2006059359A1 (fr) * | 2004-11-30 | 2006-06-08 | Dml Co., Ltd. | Kit de mesure de microbe dans un échantillon liquide, et procédé de mesure et appareil de mesure correspondants |
| FR2901281A1 (fr) * | 2006-05-19 | 2007-11-23 | Hemosystem Sa | Procede d'extraction des acides desoxyribonucleiques (adn)de microorganismes eventuellement presents dans un echantillon sanguin |
| US8507237B2 (en) | 2001-09-13 | 2013-08-13 | Geneohm Sciences, Inc. | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
| EP3031928A1 (fr) | 2010-03-01 | 2016-06-15 | Bio-Rad Innovations | Procédé rapide de détection d'enzymes et de microorganismes |
| EP4574991A1 (fr) | 2023-12-18 | 2025-06-25 | bioMérieux | Méthode pour détecter des microorganismes viables potentiellement présents dans un échantillon de produits cellulaires |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2348042A1 (fr) | 2001-06-04 | 2002-12-04 | Ann Huletsky | Sequences permettant de detecter et d'identifier des staphylococcus aureus resistant a la meticilline |
| EP1934244A2 (fr) * | 2005-10-06 | 2008-06-25 | Emthrax LLC | Méthodes et compositions en rapport avec l'utilisation de glycoprotéines de spores de b. anthracis comme vaccins |
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| US8507237B2 (en) | 2001-09-13 | 2013-08-13 | Geneohm Sciences, Inc. | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
| US8822211B2 (en) | 2001-09-13 | 2014-09-02 | Becton Dickinson Infusion Therapy Systems Inc. | Device and method for concentrating and detecting pathogenic microbes from blood products and/or their derivatives |
| WO2006059359A1 (fr) * | 2004-11-30 | 2006-06-08 | Dml Co., Ltd. | Kit de mesure de microbe dans un échantillon liquide, et procédé de mesure et appareil de mesure correspondants |
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| EP3031928A1 (fr) | 2010-03-01 | 2016-06-15 | Bio-Rad Innovations | Procédé rapide de détection d'enzymes et de microorganismes |
| EP4574991A1 (fr) | 2023-12-18 | 2025-06-25 | bioMérieux | Méthode pour détecter des microorganismes viables potentiellement présents dans un échantillon de produits cellulaires |
| WO2025132472A1 (fr) | 2023-12-18 | 2025-06-26 | Biomerieux | Méthode pour détecter des microorganismes viables potentiellement présents dans un échantillon de produits cellulaires |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1555418A (zh) | 2004-12-15 |
| ES2302855T3 (es) | 2008-08-01 |
| CA2459761A1 (fr) | 2003-03-27 |
| IL160482A0 (en) | 2004-07-25 |
| DE60225459D1 (de) | 2008-04-17 |
| JP2005503803A (ja) | 2005-02-10 |
| FR2829500B1 (fr) | 2003-12-12 |
| US20040185437A1 (en) | 2004-09-23 |
| FR2829500A1 (fr) | 2003-03-14 |
| DE60239973D1 (de) | 2011-06-16 |
| US20140030803A1 (en) | 2014-01-30 |
| EP1983343B1 (fr) | 2011-05-04 |
| EP1432812B1 (fr) | 2008-03-05 |
| CA2459761C (fr) | 2013-10-22 |
| DE60225459T2 (de) | 2009-04-23 |
| ATE388238T1 (de) | 2008-03-15 |
| ATE508199T1 (de) | 2011-05-15 |
| EP1432812A1 (fr) | 2004-06-30 |
| EP1983343A3 (fr) | 2008-12-31 |
| US8822211B2 (en) | 2014-09-02 |
| JP4351048B2 (ja) | 2009-10-28 |
| EP1983343A2 (fr) | 2008-10-22 |
| AU2002347236B2 (en) | 2007-09-20 |
| US8507237B2 (en) | 2013-08-13 |
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