CA2309705A1 - Diagnostic serologique de la maladie de chagas - Google Patents

Diagnostic serologique de la maladie de chagas Download PDF

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Publication number
CA2309705A1
CA2309705A1 CA002309705A CA2309705A CA2309705A1 CA 2309705 A1 CA2309705 A1 CA 2309705A1 CA 002309705 A CA002309705 A CA 002309705A CA 2309705 A CA2309705 A CA 2309705A CA 2309705 A1 CA2309705 A1 CA 2309705A1
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CA
Canada
Prior art keywords
buffer
plates
pbs
test
epex
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002309705A
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English (en)
Inventor
Dimas Tadeu Covas
Igor Correia Almeida
Luiz Rodolpho Raja Gabaglia Travassos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fundacao Hemocentro de Ribeirao Preto
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Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2309705A1 publication Critical patent/CA2309705A1/fr
Abandoned legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07KPEPTIDES
    • C07K14/00Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
    • C07K14/435Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans
    • C07K14/44Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from animals; from humans from protozoa
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/569Immunoassay; Biospecific binding assay; Materials therefor for microorganisms, e.g. protozoa, bacteria, viruses
    • G01N33/56905Protozoa
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K38/00Medicinal preparations containing peptides
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K39/00Medicinal preparations containing antigens or antibodies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Immunology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Biochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Hematology (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Urology & Nephrology (AREA)
  • Food Science & Technology (AREA)
  • Toxicology (AREA)
  • Cell Biology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biotechnology (AREA)
  • Virology (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Microbiology (AREA)
  • Zoology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Biophysics (AREA)
  • Genetics & Genomics (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Peptides Or Proteins (AREA)

Abstract

L'invention concerne un procédé par chimiluminescence (CL)-ELISA avec des antigènes purifiés et complexes de Trypanosoma cruzi permettant de diagnostiquer de manière spécifique et sensible la maladie de Chagas chez des patients et dans des échantillons sanguins. Les préparations utilisées sont un antigène spécifique trypomastigote (A & T) et un extrait d'épimastigote (EpEx) permettant de réguler la sensibilité. La forte sensibilité du procédé CL-ELISA permet une utilisation de quantité extrêmement petite d'antigène et une dilution de sérum dans des tests de routine de 1:2000, réduisant au minimum ainsi les réactions non spécifiques ou faux-positifs. L'utilisation de l'antigène purifié A & T élimine les réactivités croisées avec d'autres agents d'infection, détecte l'infection active et permet de surveiller la chimiothérapie chez les patients chroniques. L'utilisation de la préparation antigène EpEx ne confirme pas seulement les résultats positifs avec A & T mais suggère, lors de divergences, d'autres infections telles que la leishmaniose. Comparé à d'autres tests courants utilisés dans les banques de sang principales, le procédé CL-ELISA avec les antigènes A & T et EpEx, testé en parallèle, s'est avéré nettement plus efficace en éliminant des résultats indéterminés ou en augmentant les statistiques d'échantillons positifs diagnostiqués.
CA002309705A 1998-02-16 1998-02-16 Diagnostic serologique de la maladie de chagas Abandoned CA2309705A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR1998/000006 WO1999041610A1 (fr) 1998-02-16 1998-02-16 Diagnostic serologique de la maladie de chagas

Publications (1)

Publication Number Publication Date
CA2309705A1 true CA2309705A1 (fr) 1999-08-19

Family

ID=4068952

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002309705A Abandoned CA2309705A1 (fr) 1998-02-16 1998-02-16 Diagnostic serologique de la maladie de chagas

Country Status (2)

Country Link
CA (1) CA2309705A1 (fr)
WO (1) WO1999041610A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005055812A2 (fr) * 2003-12-05 2005-06-23 Ciphergen Biosystems, Inc. Biomarqueurs seriques de la maladie de chagas
CN105548565B (zh) * 2015-12-30 2017-08-01 深圳市新产业生物医学工程股份有限公司 一种用于检测克氏锥虫抗体的试剂盒及其制备和应用

Also Published As

Publication number Publication date
WO1999041610A1 (fr) 1999-08-19

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Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued