Can Taenia solium Latent Post-Oncospheral Stages be Found in Muscle Tissue of Cysticercosis-Infected Pigs (Sus scrofa)?
| Autor: | Mary L. Rodriguez, Silvia Rodriguez, Armando E. Gonzalez, Juan A. Jimenez, Hector H. Garcia, Manuela Verastegui, Teresa Bernal |
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| Rok vydání: | 2006 |
| Předmět: |
Male
Muscle tissue Pathology medicine.medical_specialty Time Factors Sus scrofa Cestoda Helminthiasis Microbiology Suidae Taenia solium parasitic diseases Centrifugation Density Gradient medicine Animals Parasite hosting Muscle Skeletal Ecology Evolution Behavior and Systematics Swine Diseases Life Cycle Stages biology Cysticercosis biology.organism_classification medicine.disease Staining medicine.drug_formulation_ingredient medicine.anatomical_structure Female Parasitology |
| Zdroj: | Journal of Parasitology. 92:199-201 |
| ISSN: | 1937-2345 0022-3395 |
| DOI: | 10.1645/ge-571r1.1 |
| Popis: | The existence of latent Taenia solium post-oncospheral stages in the tissues of infected pigs has been postulated. To assess whether such structures exist and can be detected, we examined muscle samples from cysticercosis-infected and uninfected pigs. Pork samples were homogenized, centrifuged, and resuspended in saline solution. Round microscopic structures of approximately 10 microm with variable refringence were found in the pellets of all samples from both infected and uninfected pigs. These became homogeneously red after staining with Sudan IV and disappeared after ether extraction. The only difference between samples from infected and uninfected pigs was the presence of inflammatory cells and tissue necrosis debris in the former group. Taenia solium oncospheres were stained and observed for comparative purposes, before and after inoculation into pork. Control oncospheres were ellipsoidal, had nucleated basophile cells in their interior, and showed red aggregates on their surfaces when stained with 3% Sudan IV. While rounded microscopical structures similar to those previously reported were found, these differed morphologically from oncospheres, were of a lipid nature, and occurred in both infected and uninfected animals. No evidence supporting the presence of latent post-oncospheral stages of Taenia solium was generated in this series of experiments. |
| Databáze: | OpenAIRE |
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