Immunochemical characterisation of a 29-Kda surface-associated molecule of Entamoeba histolytica and its recognition by serum from patients with amoebiasis
| Autor: | V. K. Vinayak, R. K. Shandil |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Microbiology (medical)
medicine.drug_class Blotting Western Protozoan Proteins Antibodies Protozoan Antigens Protozoan Enzyme-Linked Immunosorbent Assay Monoclonal antibody Microbiology Chromatography Affinity Entamoeba histolytica Affinity chromatography medicine Animals Humans Trypsin Amoebiasis Amoebic liver abscess Strain (chemistry) biology Periodic Acid Temperature Antibodies Monoclonal Amebiasis General Medicine medicine.disease biology.organism_classification Molecular biology Antigens Surface Liver Abscess Amebic biology.protein Protozoa Electrophoresis Polyacrylamide Gel Antibody |
| Zdroj: | Journal of Medical Microbiology. 36:41-45 |
| ISSN: | 1473-5644 0022-2615 |
| Popis: | A 29-Kda cytotoxic molecule of axenically-grown pathogenic Entamoeba histolytica (strain HM1) was purified from an amoebic extract by immuno-affinity chromatography with monoclonal antibodies. Immunoreactivity of the purified 29-Kda molecule altered significantly (p less than 0.01) after exposure to heat or trypsin, but remained unaltered after treatment with sodium metaperiodate. The 29-Kda molecule was recognised by serum from each of 13 patients with amoebic liver abscess. In an ELISA system, the molecule produced significantly higher (p less than 0.01) OD readings with these serum samples than with samples from asymptomatic cyst passers. No serum from healthy subjects or from patients with idiopathic ulcerative colitis or giardiasis had antibodies that reacted with the 29-Kda molecule. The immune response to the 29-Kda amoebic protein in man may indicate a specific role for this molecule in invasive amoebiasis. |
| Databáze: | OpenAIRE |
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