WO2012066260A1 - Determination du pouvoir thrombogene d'immunoglobulines humaines - Google Patents
Determination du pouvoir thrombogene d'immunoglobulines humaines Download PDFInfo
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- WO2012066260A1 WO2012066260A1 PCT/FR2011/052703 FR2011052703W WO2012066260A1 WO 2012066260 A1 WO2012066260 A1 WO 2012066260A1 FR 2011052703 W FR2011052703 W FR 2011052703W WO 2012066260 A1 WO2012066260 A1 WO 2012066260A1
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- 101000635804 Homo sapiens Tissue factor Proteins 0.000 claims description 18
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Classifications
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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
- G01N33/86—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
-
- 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
- G01N33/68—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving proteins, peptides or amino acids
- G01N33/6854—Immunoglobulins
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2333/00—Assays involving biological materials from specific organisms or of a specific nature
- G01N2333/90—Enzymes; Proenzymes
- G01N2333/914—Hydrolases (3)
- G01N2333/948—Hydrolases (3) acting on peptide bonds (3.4)
- G01N2333/95—Proteinases, i.e. endopeptidases (3.4.21-3.4.99)
- G01N2333/964—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue
- G01N2333/96425—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals
- G01N2333/96427—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals in general
- G01N2333/9643—Proteinases, i.e. endopeptidases (3.4.21-3.4.99) derived from animal tissue from mammals in general with EC number
- G01N2333/96433—Serine endopeptidases (3.4.21)
- G01N2333/96441—Serine endopeptidases (3.4.21) with definite EC number
- G01N2333/96463—Blood coagulation factors not provided for in a preceding group or according to more than one of the proceeding groups
Definitions
- the present invention relates to the determination of the thrombogenic power of human immunoglobulins contained in a test sample.
- Human immunoglobulins containing mainly IgG, are commonly used in the therapy of pathologies such as immunodeficiency or autoimmune diseases and particularly intravenous (IvIG).
- IvIG intravenous
- Embolic thrombosis consists of the formation of a thrombus closing a blood vessel.
- the thrombus can develop in the venous circulation and give rise to venous thrombosis, or in the arterial circulation and lead to arterial occlusion with ischemia or infarction.
- Thrombus is a result of blood clotting, platelet aggregation and activation of the coagulation system, a chain reaction involving platelets and coagulation factors.
- a thrombus essentially contains fibrin, an insoluble protein, formed from fibrinogen.
- Factors XI and IX are among the factors involved in intrinsic blood coagulation.
- Factor IX is activated by activated factor XI, the latter being itself activated by activated factor XII. This activation cascade eventually leads to the formation of fibrinogen (FI).
- TGT thrombin generation test
- thromboelastography consists of measuring the physical properties of whole blood by mechanically analyzing clot formation as a function of time. Depending on the parameters extracted from a graph (called thromboelastogram) generated by the thromboelastograph, one can evaluate the coagulation ability of a patient.
- Hemker et al. propose in 2002 the concept of thrombinography to measure the thrombin generation by fluorometry (Pathophysiol Haemost thromb 2002; 32: 249-53).
- Thrombinography involves using a thrombin calibrator and a specific fluorescent substrate in platelet-poor plasma or platelet-rich plasma to establish a thrombinogram.
- a thrombin-induced signal generated by tissue factor is confronted with the signal generated by a normalized amount of exogenous thrombin in the same plasma.
- a thrombin generation test also makes it possible to determine the presence of FVII, FXI, FIX, FXII, FX and / or their activated forms in a sample.
- the object of the present invention is to provide a kit for determining the thrombogenic power of human immunoglobulins contained in a logically acceptable biological product.
- the present invention also aims to provide a method for determining the thrombogenic power related to the presence of activated factor VII, activated XI, activated factor IX, activated factor XII and / or activated factor X in a sample. likely to be administered in humans.
- the first aspect of the invention relates to the use of a kit comprising the following elements:
- kits for determining the thrombogenic power of human immunoglobulins contained in a test sample, in particular a bio-logically acceptable sample, said elements of the kit and the sample to be tested when they are mixed forming a reaction medium.
- the second aspect of the invention relates to the use of a kit comprising the following elements:
- factor XI-deficient human blood plasma means a human blood plasma containing less than 1% (functional and antigenic assays) of the normal amount of factor XI and activated factor XI.
- a factor XI deficient blood plasma is prepared by immunoadsorption such as factor XI deficient plasma marketed by Cryopep.
- human immunoglobulins or "human IgG” in the context of the invention means polyvalent immunoglobulins which are essentially IgGs, possibly including IgMs. It may be whole immunoglobulins, or fragments such as F (ab ') 2 or F (ab) and any intermediate fraction obtained during the process of manufacturing polyvalent immunoglobulins.
- thrombogenic power means the ability of human immunoglobulins to trigger coagulation and to form a thrombus in patients. Therefore, a "thrombogenic immunoglobulin preparation” is an immunoglobulin preparation having the ability to induce coagulation and form a thrombus in patients.
- a "logically acceptable organic" sample is a sample that can be administered to humans by intravenous, parenteral, or intramuscular voice. These may include human immunoglobulin preparations for therapeutic purposes.
- human immunoglobulin preparations for therapeutic purposes is intended to mean any medicament comprising human immunoglobulins in a pharmaceutically acceptable form. This may include IvIG.
- a thrombogram is represented by a thrombin generation curve characterized by several parameters:
- ETP Endogenous Thrombin Potential, in nM x min
- Velocity Peak / (ttPeak-Lagtime) (in nM / min), representative of the formation rate of thrombin.
- the invention relates to the use of a kit comprising the following elements:
- kits comprising the following elements:
- thrombogenic power related to the presence in particular of the factor XII and / or its activated form, of human immunoglobulins contained in a test sample, in particular a bio-logically acceptable sample, said elements of the kit and the test sample forming a reaction medium.
- Vector XI-deficient human blood plasma means a human blood plasma containing less than 1% (functional and antigenic assays) of the normal amount of factor XI and less than ⁇ 10 9 platelets / L of plasma .
- Platelet-poor blood plasma is prepared according to a method known to those skilled in the art such as centrifugation.
- activated factor VII or “FVIIa” is meant an FVII protein capable of activating factor IX or factor X.
- activated factor XII or "FXIIa” is meant an FXII protein capable of activating factor XI.
- activated factor XI or “FXIa” is meant a protein consisting of two 80 kDa subunits, linked together by a disulfide bridge at the Cys-321 position and capable of recognizing its natural substrate: FIX.
- activated factor IX or "FIXa” is meant a FIX protein capable of recognizing its natural substrate: FX.
- activated factor X or “FXa” is meant an FX protein capable of recognizing its natural substrate prothrombin.
- the present invention relates to the use of a kit according to the invention further comprising a dilution buffer such as a physiological buffer Tris NaCl or a buffer identical to that of the sample to test. It is then an acceptable formulation buffer for a preparation of immunoglobulins for therapeutic purposes.
- a dilution buffer such as a physiological buffer Tris NaCl or a buffer identical to that of the sample to test. It is then an acceptable formulation buffer for a preparation of immunoglobulins for therapeutic purposes.
- the human blood plasma sample contained in the kit and the dilution buffer form a negative control.
- the kit according to the invention further comprises a fluorogenic or flurorescent substrate.
- Human blood plasma is collected from healthy volunteers who do not have serious diseases, and contains all normal coagulation factors involved in intrinsic blood coagulation.
- the human blood plasma is a pool of fresh or frozen human plasma blood or a calibrated commercial blood plasma.
- the blood plasma used in the invention may contain or be devoid of tissue factor.
- the human blood plasma is devoid of tissue factor.
- the human tissue factor of the kit is of plasmatic origin, of recombinant origin, or of transgenic origin.
- the invention relates to the use of a kit comprising:
- a platelet-deficient human blood plasma deficient in FXI the volume of which represents from 80% to 40%, in particular from 75% to 50%, especially 53% of the volume of the reaction medium.
- human phospholipids whose final concentration in the reaction medium is from 1 ⁇ to 10 ⁇ , in particular 4 ⁇ ,
- human tissue factor the final concentration of which in the reaction medium is 0.05 ⁇ M at 10 ⁇ M, particularly 0.3 ⁇ M,
- Said kit may further comprise a dilution buffer, in particular Tris NaCl buffer.
- the ratio between the volume of the blood plasma and that of the sample to be tested is from 8: 1 to 2: 1, particularly 4: 1.
- the ratio of 8: 1 to 2: 1 corresponds to the injection conditions of the immunoglobulin to the patient.
- the ratio of 4: 1 is physio logically significant for an Ig concentration of 5%.
- Another aspect of the invention relates to a method for measuring the thrombogenic power of human immunoglobulins contained in a test sample, in particular a bio-logically acceptable sample.
- the method comprises the following steps:
- step c) the addition in the intermediate reaction medium obtained in the preceding step and in the intermediate negative control obtained in step a) of a mixture comprising phospho lipids, CaCl 2, and possibly human tissue factor, to form a reaction medium and a negative control;
- step c) obtaining a first thrombinogram by performing a thrombin generation test on the reaction medium obtained in step c) and a second thrombinogram by performing a thrombin generation test on the negative control obtained at the same time; step c);
- step d) comparing at least one of the parameters of each of the thrombograms obtained from step d) with a homologous parameter obtained from standard thrombograms established on the basis of a series of calibrators whose thrombogenic power related to the presence of activated factor VII and / or activated factor XI and / or activated factor IX and / or activated factor XII and / or activated factor X is known and varies between each calibrator;
- step e) the deduction of step e) from the thrombogenic power of human immunoglobulins contained in the sample to be tested.
- platelet-poor human blood plasma is deficient in factor XI.
- the standard thrombinogram is obtained by performing a thrombin generation test on a reaction medium comprising: i) a calibrator whose thrombogenic power related to the presence of activated factor VII and / or activated factor XI and / or activated factor IX and / or activated factor XII and / or activated factor X is known, ii) human platelet-poor blood plasma, possibly deficient in factor XI, iii) a reaction mixture comprising phopho lipids, CaCl 2 and possibly human tissue factor.
- the calibrator is used by the software to perform corrections of the raw signals and overcomes some of the disadvantages of fluorescence and transform the signal initially into fluorescence units per minute directly into nanomolar thrombin.
- the final concentration of human tissue factor in the reaction medium is 0.05 ⁇ M to 10 ⁇ M, particularly 0.3 ⁇ M.
- Tissue factor and FVIIa form a complex to activate IX and X factors in the exogenous coagulation pathway.
- the final concentration of human phospholipids in the reaction medium is 1 ⁇ to 10 ⁇ , particularly 4 ⁇ .
- the volume of the blood plasma is from 80% to 40%, especially from 75% to 50%, particularly 53% of the volume of the reaction medium.
- the ratio of blood plasma volume to that of the sample is from 8: 1 to 2: 1, particularly 4: 1.
- the thrombogram is obtained by the method of thromboelastography or the thrombinography method.
- Thromboelastography can be implemented according to the method known to those skilled in the art, as described by Savry et al. (Ann Fr Anesth Reanim 2005; 24: 607-16).
- Thrombinography can be implemented according to the method known to those skilled in the art, as described by Hemker et al. (Pathophysiol Haemost thromb 2002; 32: 249-53).
- the method according to the invention comprises the following steps: a) mixing the dilution buffer of a test sample with a human platelet-poor blood plasma and deficient in factor XI to form an intermediate negative control;
- step c) the addition in the intermediate reaction medium obtained in the preceding step and in the intermediate negative control obtained in step a) of a mixture comprising 4 ⁇ l of phopholipids, and 3 ⁇ M of human tissue factor and CaCl 2, for form a reaction medium and a negative control;
- step c) obtaining two thrombograms by the implementation of thrombinography, performing a thrombin generation test on the reaction medium and on the negative control obtained in step c);
- step d) comparing at least one of the parameters of each of the thrombograms obtained in step d) with a homologous parameter obtained from standard thrombograms established on the basis of a series of calibrators whose thrombogenic power related to the presence of activated factor VII and / or activated factor XI and / or activated factor IX and / or activated factor X is known and varies between each calibrator;
- step e) the deduction of step e) thrombogenic power related to the presence of factor VII, factor XI, factor IX, factor X and / or their activated form in the sample.
- FIG. 1 represents the respective determination of the thrombogenic power of activated factor XI in a normal plasma pool, or a diluted normal plasma pool (1/9), of the dilution buffer in a normal plasma pool, or a diluted normal plasma pool (1/9) respectively, according to the first protocol. Concentration The final factor of the tissue factor in the reaction medium is 20 ⁇ M. The other reaction conditions are described in Table 1, under the column designated "Protocol 1".
- Figure 2 shows the respective determination of the thrombogenic power of activated factor XI in a pool of normal plasma, or FXIa in a diluted normal plasma pool (1/9), and dilution buffer in a plasma pool. normal, or dilution buffer in a diluted normal plasma pool (1/9), according to the second protocol.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- Figure 3 shows the respective determination of the thrombogenic power of activated factor XI in a pool of normal plasma, FXI in a pool of diluted normal plasma (1/9), dilution buffer in a pool of normal plasma, or dilution buffer in a diluted normal plasma pool (1/9) according to the second protocol.
- the reaction medium does not contain any tissue factor.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- Figure 4 shows the respective determination of the thrombogenic power of activated factor XI of different concentrations in a pool of normal plasma containing IgG, activated Xla in a pool of normal plasma, a pool of normal plasma containing IgG, and dilution buffer in a normal plasma pool, according to the second protocol.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- Figure 5 shows the respective determination of the thrombogenic power of activated factor IX of different concentrations in a pool of normal plasma containing IgG, activated IXa in a pool of normal plasma, a pool of normal plasma containing IgG, and dilution buffer in a normal plasma pool, according to the second protocol.
- the final concentration of tissue factor in the medium The other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- Figure 6 shows the respective determination of the thrombogenic potency of the dilution buffer in a pool of normal plasma, activated factor XI in a pool of normal plasma containing IgG, activated factor IX in a normal plasma pool containing IgG, activated factor XI and activated factor IX in a pool of normal IgG-containing plasma, Tglelin-type immunoglobulin (LFB) in a normal plasma pool containing Clairyg® immunoglobulin (LFB) in a pool of normal plasma, immunoglobulins of the IgNG (LFB) type in a normal plasma pool, IVHEBEX® type immunoglobulins (LFB) in a pool of normal plasma.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- FIG. 7 shows the respective determination of the thrombogenic power of the calibrated plasma marketed by Stago under the name "Unicalibrator®", of the “Unicalibrator®” plasma containing the dilution buffer, of the "Unicalibrator®” plasma containing the factor Activated IX, "Unicalibrator®” plasma containing activated factor XI, "Unicalibrator®” plasma containing activated factor IX and activated factor XI, of "Unicalibrator®” plasma containing Clairyg® type immunoglobulins.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- FIG. 8 shows the respective determination of the thrombogenic power of the "Unicalibrator®” plasma containing the dilution buffer, the "Unicalibrator®” plasma containing the activated factor IX, the “Unicalibrator®” plasma containing the activated factor XI, the “Unicalibrator®” plasma containing immunoglobulins of the IgNG type.
- the reaction medium does not contain any tissue factor.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- FIG. 9 shows the respective determination of thrombogenic power of FXI deficient plasma, FIXa in FXI deficient plasma, FXIa in FXI deficient plasma, FIXa and FXIa in FXI deficient plasma, Clairyg® type immunoglobulins in FXI deficient plasma.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- Figure 10 shows the respective determination of the thrombogenic power of FXI deficient plasma, FIXa in FXI deficient plasma, FXIa in FXI deficient plasma, IgNG immunoglobulins in FXI deficient plasma.
- the reaction medium does not contain any tissue factor.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- FIG. 11 represents the respective determination of the thrombogenic power of the FIX-deficient plasma, FIXa in a FIX-deficient plasma, FIX ⁇ in a FIX-deficient plasma, IgNG-type immunoglobulins in a FIX-deficient plasma.
- the final concentration of the tissue factor in the reaction medium is 0.3 ⁇ M.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2".
- FIG. 12 represents the respective determination of the thrombogenic power of FIX-deficient plasma, FIXa in a FIX-deficient plasma, FIX ⁇ in a FIX-deficient plasma, IgNG immunoglobulins in FIX-deficient plasma.
- the reaction medium does not contain any tissue factor.
- the other reaction conditions are described in Table 1, under the column designated "Protocol 2". FIG.
- Figure 14A represents the determination of the respective power thrombogenic samples containing 0.3 pM tissue factor, 4 ⁇ phospho lipids, ⁇ ⁇ , of thrombogenic intravenous immunoglobulin, ⁇ , normal plasma and optionally ⁇ ⁇ ⁇ d anti-FXI.
- FIG. 14B represents the respective determination of the thrombogenic power of the samples containing 0.3 ⁇ M of tissue factor, 4 ⁇ l of phospho lipids, ⁇ ⁇ ⁇ , intravenous thrombogenic immunoglobulin, ⁇ ⁇ , FXI deficient plasma and possibly ⁇ ⁇ ⁇ ⁇ anti-FXI.
- Figure 15 shows the study of velocity versus FXI inhibitor concentration.
- Figure 16 shows the respective determination of the thrombogenic power of samples respectively containing 1 to 16 ng / ml FXIa diluted in a lot of 5% IgNG or in the dilution buffer of said lot of 5% IgNG.
- FIG. 17A represents the respective determination of the thrombogenic power of the samples respectively containing from 0.5 IU / ml to 200 IU / ml of FVIIa in an FXI deficient plasma or the Clairyg® buffer (formulation buffer of Clairyg® product marketed by Laboratory LFB BIOMEDICAMENTS) in a plasma deficient in FXI.
- FIG. 17B represents the respective determination of the thrombogenic power of the samples respectively containing from 0.5 IU / ml to 200 IU / ml of FVIIa in a normal plasma or the Clairyg® buffer in a normal plasma.
- FIG. 18A represents the respective determination of the thrombogenic power of the samples respectively containing from 0.68 IU / ml to 5.5 IU / ml of FIXa in an FXI deficient plasma or the Clairyg® buffer in an FXI deficient plasma. .
- Figure 18B shows the respective determination of the thrombogenic power of the samples respectively containing 0.68 IU / ml at 5.5 IU / ml of FIXa in normal plasma or Clairyg® buffer in normal plasma.
- Example 1 Determination of the thrombogenic power of a sample
- Protocol 1 for determining the thrombogenic power of a test sample
- Sample preparation 1 volume of product for 8 volumes of PN or NP at 1 / 5th dilution buffer (RI).
- Protocol 2 for determining the thrombogenic power of a test sample
- PN Normal Plasma
- PN Frozen Plasma Pool (internal) or Unicalibrator (Stago) Sample Preparation: 1 product flight for 4 or 8 PN flight
- reaction mixture 500 ⁇ ⁇ MP -reagent taken up with 0.5 ml of water + 300 ⁇ ⁇ PRP -reagent + 200 ⁇ ⁇ of dilution buffer
- the thrombogenic power of FXIa in a pool of normal plasma or in a diluted plasma pool is determined according to protocol 1 (FIG. 1) or protocol 2 (FIG. 2), respectively described above.
- Protocol 2 carried out at low final concentration of tissue factor, makes it possible to obtain a more sensitive result than that obtained by protocol 1, using a high final concentration of tissue factor.
- the thrombogenic provision of FXIa in a pool of normal plasma or in a diluted plasma pool is determined, according to protocol 2, in a reaction medium containing 0.3 ⁇ M of tissue factor (FIG. 2) or without tissue factor (FIG. 3). .
- the variability of the responses obtained in the reaction medium without FT is greater than that in the reaction medium with FT. In the absence of FT, the specificity of this response that occurs at late times (> 20min) is not assured.
- the thrombogenic power of FXIa in a calibrated commercial plasma pool is determined, according to protocol 2, in a reaction medium containing 4 ⁇ (FIG. 8) or 8 ⁇ (FIG. 13) phospholipids and without FT.
- Example 5 Determination of the thrombogenic power of immunoglobulins of the IgNG type
- the protocol 2 described above is used to determine the thrombogenic power related to the presence of FXIa (FIG. 4) or FIXa (FIG. 5) of immunoglobulins of the IgNG (LFB) type.
- the thrombogenic power of FXIa or FIXa is determined, according to protocol 2, in a reaction medium respectively containing a calibrated commercial normal plasma pool (Unicalibrator®) (FIGS. 7 and 8), an FXI deficient plasma pool (FIGS. and 10), or a FIX deficient plasma pool ( Figures 11 and 12).
- the signal discriminating capacity against a sample containing FXIa in a reaction medium containing a commercial plasma pool is not significantly different from that in an FXI deficient plasma pool (FIGS. 12, 13, 14 and 14). 15).
- the respective thrombogenic power of immunoglobulins of Tegéline® type (LFB), immunoglobulins of Clairyg® type (LFB), immunoglobulins of IvHEBEX® type (LFB), and immunoglobulins of IgNG type (LFB), related to the presence of FXIa and / or FIXa, is determined according to protocol 2.
- a range of human anti-FXIa monoclonal antibodies was prepared and tested in the presence of a thrombogenic Ig preparation (IgT), a normal plasma (FIG. 14A) and a FXI deficient (FIG. 14B). ).
- FIG. 15 shows the velocity parameter as a function of the doses of anti FXIa antibodies, in normal plasma and in FXIa deficient plasma.
- the inhibition is maximal for the dose of 100 ⁇ g / ml of antibody at the two dilutions of Ig tested.
- the thrombogram obtained has a velocity lower than that of the dilution buffer tested alone in normal plasma, the activated FXI from the plasma being also inhibited.
- Figure 16 shows that the thrombin generation profiles do not differ significantly in the presence or absence of immunoglobulin. The absence of inhibitory effect related to immunoglobulins is demonstrated, even for very low concentrations of FXIa, of the order of ng / ml. EXAMPLE 10 Determination of Thrombogenic Power of Factor VIIa
- FIG. 17A and FIG. 17B show that the use of the kit of the present invention containing an FXIa deficient human blood plasma makes it possible to give a better sensitivity to the possible presence of factor VIIa in a test sample compared to that obtained with a normal plasma.
- FIG. 18A and FIG. 18B show that the use of the kit of the present invention containing a FXI deficient human blood plasma makes it possible to give a better sensitivity to the possible presence of factor IXa in a test sample compared with that obtained with a normal plasma.
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CA2845790A CA2845790C (fr) | 2010-11-18 | 2011-11-18 | Determination du pouvoir thrombogene d'immunoglobulines humaines |
US14/343,642 US9891238B2 (en) | 2010-11-18 | 2011-11-18 | Determination of the thrombogenic power of human immunoglobulins |
IL231858A IL231858A0 (en) | 2010-11-18 | 2014-04-01 | Determination of thrombogenic power of human immunoglobulins |
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FR10/59493 | 2010-11-18 | ||
FR1059493A FR2967781B1 (fr) | 2010-11-18 | 2010-11-18 | Determination du pouvoir thrombogene d'immunoglobulines humaines |
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WO2012066260A1 true WO2012066260A1 (fr) | 2012-05-24 |
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US (1) | US9891238B2 (fr) |
CA (1) | CA2845790C (fr) |
FR (1) | FR2967781B1 (fr) |
IL (1) | IL231858A0 (fr) |
WO (1) | WO2012066260A1 (fr) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996038585A1 (fr) * | 1995-06-01 | 1996-12-05 | Eisai Co., Ltd. | Reactif permettant de mesurer l'activite de coagulation sanguine |
WO1997019357A1 (fr) * | 1995-11-22 | 1997-05-29 | Oklahoma Medical Research Foundation | Essai de dosage pour les facteurs de coagulation sanguine viii et ix |
EP1536236A1 (fr) * | 2003-11-28 | 2005-06-01 | Sysmex Corporation | Réactif et procédé pour déterminer le temps de coagulation |
FR2910969A1 (fr) * | 2006-12-29 | 2008-07-04 | Lab Francais Du Fractionnement | Procede de mesure de la concentration de facteur viia (fviia) dans un echantillon |
WO2009045406A1 (fr) * | 2007-10-05 | 2009-04-09 | Plaxgen, Inc. | Complexes biologiques à multiples sous-unités pour le traitement de maladies en plaques |
WO2010020423A2 (fr) * | 2008-08-22 | 2010-02-25 | Baxter Healthcare S.A. | Méthodes de traitement de troubles du saignement |
Family Cites Families (1)
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EP0585504A1 (fr) * | 1992-09-04 | 1994-03-09 | Pentapharm A.G. | Activateur de prothrombine dépendant de phospholipides et son application dans les tests pour lupus anticoagulants |
-
2010
- 2010-11-18 FR FR1059493A patent/FR2967781B1/fr active Active
-
2011
- 2011-11-18 WO PCT/FR2011/052703 patent/WO2012066260A1/fr active Application Filing
- 2011-11-18 US US14/343,642 patent/US9891238B2/en active Active
- 2011-11-18 CA CA2845790A patent/CA2845790C/fr not_active Expired - Fee Related
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996038585A1 (fr) * | 1995-06-01 | 1996-12-05 | Eisai Co., Ltd. | Reactif permettant de mesurer l'activite de coagulation sanguine |
WO1997019357A1 (fr) * | 1995-11-22 | 1997-05-29 | Oklahoma Medical Research Foundation | Essai de dosage pour les facteurs de coagulation sanguine viii et ix |
EP1536236A1 (fr) * | 2003-11-28 | 2005-06-01 | Sysmex Corporation | Réactif et procédé pour déterminer le temps de coagulation |
FR2910969A1 (fr) * | 2006-12-29 | 2008-07-04 | Lab Francais Du Fractionnement | Procede de mesure de la concentration de facteur viia (fviia) dans un echantillon |
WO2009045406A1 (fr) * | 2007-10-05 | 2009-04-09 | Plaxgen, Inc. | Complexes biologiques à multiples sous-unités pour le traitement de maladies en plaques |
WO2010020423A2 (fr) * | 2008-08-22 | 2010-02-25 | Baxter Healthcare S.A. | Méthodes de traitement de troubles du saignement |
Non-Patent Citations (3)
Title |
---|
B. TARDY-PONCET ET AL: "Thrombin generation and heparin-induced thrombocytopenia", JOURNAL OF THROMBOSIS AND HAEMOSTASIS, vol. 7, no. 9, 1 September 2009 (2009-09-01), pages 1474 - 1481, XP055001528, ISSN: 1538-7933, DOI: 10.1111/j.1538-7836.2009.03514.x * |
H. COEN HEMKER ET AL: "The technique of measuring thrombin generation with fluorescent substrates: 4. The H-transform, a mathematical procedure to obtain thrombin concentrations without external calibration", January 2009 (2009-01-01), pages 1 - 7, XP055001907, Retrieved from the Internet <URL:http://homepages.cwi.nl/~pieth/db/045.pdf> [retrieved on 20110704], DOI: 10.1160/th08-09-0562 * |
MONICA GALLI ET AL: "Anti-prothrombin IgG from patients with anti-phospholipid antibodies inhibits the inactivation of factor Va by activated protein C", BRITISH JOURNAL OF HAEMATOLOGY, 17 January 2005 (2005-01-17), pages 240 - 247, XP055001534, Retrieved from the Internet <URL:http://onlinelibrary.wiley.com/store/10.1111/j.1365-2141.2005.05438.x/asset/j.1365-2141.2005.05438.x.pdf?v=1&t=gpgtrhp9&s=187ef944b4c633dd6fff72c53eb333dd97291ecb> [retrieved on 20110628] * |
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Publication number | Publication date |
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CA2845790A1 (fr) | 2012-05-24 |
FR2967781B1 (fr) | 2019-06-28 |
CA2845790C (fr) | 2018-05-01 |
US20140295471A1 (en) | 2014-10-02 |
IL231858A0 (en) | 2014-05-28 |
US9891238B2 (en) | 2018-02-13 |
FR2967781A1 (fr) | 2012-05-25 |
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