Granuloma Formation and Parasite Disintegration in Porcine Cysticercosis: Comparison with Human Neurocysticercosis
| Autor: | Judith Trujillo, M.M. Jaramillo, Blanca I. Restrepo, J.I. Alvarez, Diana P. Londoño, A.L. Alvarez |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Pathology
medicine.medical_specialty Granuloma formation Swine Neurocysticercosis Biology Pathology and Forensic Medicine Immune system Taenia solium parasitic diseases medicine Animals Parasite hosting Muscle Skeletal Swine Diseases Granuloma General Veterinary Myocardium Brain Skeletal muscle Cysticercosis Cysticercus medicine.disease Porcine cysticercosis medicine.drug_formulation_ingredient medicine.anatomical_structure Immunology |
| Zdroj: | Journal of Comparative Pathology. 127:186-193 |
| ISSN: | 0021-9975 |
| DOI: | 10.1053/jcpa.2002.0579 |
| Popis: | Taenia solium cysticerci infect human beings and pigs, causing cysticercosis. In this study the pig was used as a model to characterize the immune response against cysticerci, given the difficulties in analysing the developing immune response in infected human brains. Metacestodes in different stages of viability or degeneration were isolated from the brain, heart and skeletal muscle of naturally infected swine, and the adjacent tissue was examined histologically. The immune response elicited by the cysticerci was classified into four separate stages. In stage I the parasites were surrounded by a thin layer of collagen type I, and by stage II there was a sparse inflammatory infiltrate. In stage III, granuloma formation was evident, and by stage IV the parasite was surrounded by an eosinophil-rich infiltrate and its vesicular membrane had begun to degenerate. The final stage, IV, was detected mainly in the heart but not in the brain. The granulomatous reaction in swine resembled that described previously in human patients, but differed in the abundance of eosinophils, the relative paucity of plasma cells, and the discrete deposition of collagen. These differences were probably due to the fact that in pigs the immune response can be examined earlier than in human patients, in whom sampling is inevitably made at a more chronic stage. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect