Method of detecting cytopenia that is mediated by drug-dependent antibody binding to blood cells
First Claim
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1. A method of detecting drug-dependent antibodies in a patient, wherein a drug or a metabolite of said drug is suspected of inducing thrombocytopenia, said method comprising:
- (i) separately incubating human platelets or platelet membrane protein derived from said human platelets with a serum or plasma sample from said patient, and a reagent drug or drug metabolite solution or a buffer solution, said drug or said metabolite of said drug being solubilized in said buffer solution to form said reagent drug or drug metabolite solution, said incubation being affected at a temperature and for a time sufficient to form complexes of (1) said drug or said metabolite, (2) said platelets or said platelet membrane protein, and (3) any of said drug-dependent antibodies in said serum or plasma, to form respective test and control reaction solutions; and
,(ii) immunologically determining the amount of antibody bound to said platelets or said platelet membrane protein in said test and control reaction solutions;
wherein said drug-dependent antibodies are present when the amount of bound antibody is greater in the test reaction solution than in the control reaction solution; and
wherein said drug or said metabolite is selected from the group consisting of acetazolamide, actinomycin, allopurinol, allylisopropylacetylurea, allylisopropylbarbiturate, alpha methyldopa, amiodarone, amphotericin B, ampicillin, amrinon, antazoline, antipyrine, apalcillin, benoxaprofen, bleomycin, butabarbitone, butoconazole, captopril, carbamazepine, carbenicillin, ceftazidine, ceftriazone, centalum, cephalexin, cephalothin, cephamandole, chenodeoxycholic acid, chlordiazepoxide, chloroquine, chlorothiazide, chlorpheniramine, chlorpropamide, chlorthalidone, cimetidine, clarithromycin, clometacine, clonazepam, clopamide, cloxacillin, cocaine, cyclophosphamide, cyclosporine A, danazol, desferrioxamine, diatrizoate, diazepam, diazoxide, diclofenac, didanosine, difluoromethylornithine, digitalis, digitoxin, digoxin, diltiazem, disulfiram, doxepin, ethambutol, etretinate, famotidine, fenoprofen, flavone-8-acetic acid, fluconazole, fluphenazine, furosemide, fusidic acid, gentamicin, glibenclamide, glymidine, haloperidol, heroin, hydrochlorothiazide, hydroxychloroquine, hydroxyquinoline, ibuprofen, imipramine, indomethacin, interferon, iocetamic acid, iopanoic acid, isoniazid, isotretinoin (vitamin A), L-dopa aminoglutethimide, levamisole, levodopa, lidocaine, lincomycin, lithium salts, meclofenamate, meprobamate, methazolamide, methicillin, methotrimeprazine, methylchlorothiazide, methylphenidate, mexiletine, mezlocillin, mianserin, minoxidil, morphine, moxalactam, N-acetylsulfanilamide sodium, nalidizic acid, naproxen, nifedipine, nimesulfide, nitrofurantoin, nitroglycerin, nomifensine, noramiopyrine, norfloxacin, novobiocin, octreotide acetate, odansetron, oxprenolol, oxyphenbutazone, oxytetracycline, p-aminosalicylate, paramethadione, penicillamine, pentagastrin, pentamidine, pentosan polysulfate, a phenothiazine, phenylbutazone, phenytoin, phthalazinol, phthalysulfathiazole, piperacillin, piperazine, piroxicam, plicamycin, polyurethane, primidone, procainamide, prochlorperazine, propranolol, propylthiouracil, ranitidine, simvastatin, sodium salicylate, spiramycin, spironolactone, stibogluconate, streptomycin, succinylsufathiazole, sulfadimethoxine, sulfaguanidine, sulfamerazine, sulfamethizole, sulfamethoxypyridazine, sulfanilamide, sulfasalazine, sulfathiazole, sulindac, suramin, thioguanin, thiomerazol, thiouracil, ticlopidine, tienilic acid, tobramycin, tolbutamide, tolmetin, trimethoprim, valproic acid and metabolites thereof.
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Abstract
Drug-dependent antibodies that bind to granulocytes, erythrocytes, platelets or membrane proteins derived from these cells, in the presence of a drug, but not in its absence, can be detected using a sensitive assay. Detection of the drug-dependent antibodies permits diagnosis of cytopenia mediated by the drug.
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Citations
19 Claims
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1. A method of detecting drug-dependent antibodies in a patient, wherein a drug or a metabolite of said drug is suspected of inducing thrombocytopenia, said method comprising:
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(i) separately incubating human platelets or platelet membrane protein derived from said human platelets with a serum or plasma sample from said patient, and a reagent drug or drug metabolite solution or a buffer solution, said drug or said metabolite of said drug being solubilized in said buffer solution to form said reagent drug or drug metabolite solution, said incubation being affected at a temperature and for a time sufficient to form complexes of (1) said drug or said metabolite, (2) said platelets or said platelet membrane protein, and (3) any of said drug-dependent antibodies in said serum or plasma, to form respective test and control reaction solutions; and
,(ii) immunologically determining the amount of antibody bound to said platelets or said platelet membrane protein in said test and control reaction solutions; wherein said drug-dependent antibodies are present when the amount of bound antibody is greater in the test reaction solution than in the control reaction solution; and wherein said drug or said metabolite is selected from the group consisting of acetazolamide, actinomycin, allopurinol, allylisopropylacetylurea, allylisopropylbarbiturate, alpha methyldopa, amiodarone, amphotericin B, ampicillin, amrinon, antazoline, antipyrine, apalcillin, benoxaprofen, bleomycin, butabarbitone, butoconazole, captopril, carbamazepine, carbenicillin, ceftazidine, ceftriazone, centalum, cephalexin, cephalothin, cephamandole, chenodeoxycholic acid, chlordiazepoxide, chloroquine, chlorothiazide, chlorpheniramine, chlorpropamide, chlorthalidone, cimetidine, clarithromycin, clometacine, clonazepam, clopamide, cloxacillin, cocaine, cyclophosphamide, cyclosporine A, danazol, desferrioxamine, diatrizoate, diazepam, diazoxide, diclofenac, didanosine, difluoromethylornithine, digitalis, digitoxin, digoxin, diltiazem, disulfiram, doxepin, ethambutol, etretinate, famotidine, fenoprofen, flavone-8-acetic acid, fluconazole, fluphenazine, furosemide, fusidic acid, gentamicin, glibenclamide, glymidine, haloperidol, heroin, hydrochlorothiazide, hydroxychloroquine, hydroxyquinoline, ibuprofen, imipramine, indomethacin, interferon, iocetamic acid, iopanoic acid, isoniazid, isotretinoin (vitamin A), L-dopa aminoglutethimide, levamisole, levodopa, lidocaine, lincomycin, lithium salts, meclofenamate, meprobamate, methazolamide, methicillin, methotrimeprazine, methylchlorothiazide, methylphenidate, mexiletine, mezlocillin, mianserin, minoxidil, morphine, moxalactam, N-acetylsulfanilamide sodium, nalidizic acid, naproxen, nifedipine, nimesulfide, nitrofurantoin, nitroglycerin, nomifensine, noramiopyrine, norfloxacin, novobiocin, octreotide acetate, odansetron, oxprenolol, oxyphenbutazone, oxytetracycline, p-aminosalicylate, paramethadione, penicillamine, pentagastrin, pentamidine, pentosan polysulfate, a phenothiazine, phenylbutazone, phenytoin, phthalazinol, phthalysulfathiazole, piperacillin, piperazine, piroxicam, plicamycin, polyurethane, primidone, procainamide, prochlorperazine, propranolol, propylthiouracil, ranitidine, simvastatin, sodium salicylate, spiramycin, spironolactone, stibogluconate, streptomycin, succinylsufathiazole, sulfadimethoxine, sulfaguanidine, sulfamerazine, sulfamethizole, sulfamethoxypyridazine, sulfanilamide, sulfasalazine, sulfathiazole, sulindac, suramin, thioguanin, thiomerazol, thiouracil, ticlopidine, tienilic acid, tobramycin, tolbutamide, tolmetin, trimethoprim, valproic acid and metabolites thereof. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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2. A method of detecting drug-dependent antibodies in a patient, wherein a drug or a metabolite of said drug is suspected of inducing hemolytic anemia, said method comprising:
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(i) separately incubating human erythrocytes or erythrocyte membrane protein derived from said human erythrocytes with a serum or plasma sample from said patient, and a reagent drug or drug metabolite solution or a buffer solution, said drug or said metabolite of said drug being solubilized in said buffer solution to form said reagent drug or drug metabolite solution, said incubation being affected at a temperature and for a time sufficient to form complexes of (1) said drug or said metabolite, (2) said erythrocytes or said erythrocyte membrane protein, and (3) any of said drug-dependent antibodies in said serum or plasma, to form respective test and control reaction solutions; and
,(ii) immunologically determining the amount of antibody bound to said erythrocytes or erythrocyte membrane protein in said test and control reaction solutions; wherein said drug-dependent antibodies are present when the amount of bound antibody is greater in the test reaction solution than in the control reaction solution; and wherein said drug or said metabolite is selected from the group consisting of acetaminophen, antazoline, carbromal, chlorpropamide, diethylstilbestrol, erythromycin, 5-fluorouracil, ibuprofen, insulin, isoniazid, melphalan, mesantoin, nalidixic acid, p-aminosalicylic acid, phenacetin, a phenothiazine, probenecid, propanil, rifampicin, streptomycin, sulfonylurea, sulindac, tetracycline, thiazides, thiopental, tolbutamide, tolmetin, triamterene, warfarin and metabolites thereof. - View Dependent Claims (18)
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3. A method of detecting drug-dependent antibodies in a patient, wherein a drug or a metabolite of said drug is suspected of inducing granulocytopenia, said method comprising:
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(i) separately incubating human granulocytes or granulocyte membrane protein derived from said human granulocytes with a serum or plasma sample from said patient, and a reagent drug or drug metabolite solution or a buffer solution, said drug or said metabolite of said drug being solubilized in said buffer solution to form said reagent drug or drug metabolite solution, said incubation being affected at a temperature and for a time sufficient to form complexes of (1) said drug or said metabolite, (2) said granulocytes or said granulocyte membrane protein, and (3) any of said drug-dependent antibodies in said serum or plasma, to form respective test and control reaction solutions; and
,(ii) immunologically determining the amount of antibody bound to said granulocytes or granulocyte membrane protein in said test and control reaction solutions; wherein said drug-dependent antibodies are present when the amount of bound antibody is greater in the test reaction solution than in the control reaction solution; and wherein said drug or said metabolite is selected from the group consisting of acetaminophen, acetazolamide, allopurinol, aminopyrine, amitriptyline, amoxapine, captopril, carbamazepine, carbimazole, cephalosporin, chloramphenicol, chlordiazepoxide, tolbutamide, chloroquine, chlorothiazide, chlorthalidone, cimetidine, clindamycin, clozapine, dapsone, desipramine, dipyrone, disopyramide, doxepin, ethacrynic acid, gentamicin, hydralazine, hydrochlorothiazide, imipramine, indomethacin, isoniazid, levamisole, mephenytoin, meprobamate, metamizole, methimazole, methyldopa, noramidopyrine, oxyphenbutazone, para-aminosalicylic acid, penicillamine, pentazocine, phenacetin, a phenothiazine, phenylbutazone, phenytoin, procainamide, propranolol, propylthiouracil, pyrimethamine, quinidine, ranitidine, rifampin, streptomycin, sulfonamides, tetracycline, ticlopidine, tocainide, trimethoprin-sulfamethooxazole, vancomycin and metabolites thereof. - View Dependent Claims (19)
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Specification