Mr1 9-14

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Mr1 9-14

  1. 1. Morning Report Christopher Dado 1-9-14
  2. 2. ID • Taenia species • The proglottids were immature and could not be speciated. • Need to obtain mature proglottids or a scolex
  3. 3. Taeniasis • Taenia solium (pork), Taenia saginata (beef), and Taenia asiatica (asian pork) • Saginata and asiatica very similar and have humans as the only definitive host with adult living in GI tract. • Taenia solium may be definitive or intermediate host in humans.
  4. 4. Taenia species • Behind the scolex is a short skinny neck in which further proglottids (segments) are formed. The elongating chain of proglottids called strobila.
  5. 5. Taenia species • Mature proglottids are hermaphroditic and produce eggs. • Eggs from all taenia species are identical Thick brown striated shell oncosphere
  6. 6. Life cycle • Ingestion of eggs or proglottids by intermediate host • Larval oncospheres are activated, egg escapes • Penetrates the intestinal mucosa • Migrates to tissue and develops a cysticercus (single scolex) • Ingestion by definitive host • Scolex develops into adult tapeworm
  7. 7. Taenia species • Clinical presentation: usually patients become aware with passage of proglottids. Mild abdominal pain/discomfort, nausea, Change in appetite, weakness, weight loss.
  8. 8. Taenia species • Diagnosis: detection of eggs or proglottids in stool ( or cellophane tape test), eosinophilia or elevated IgE may be detected. • Treatment: Praziquantel 10 mg/kg one time dose • Prevention: cook meat (cuts) to 145 C with a three minute rest period and (ground) to 160 C
  9. 9. Cysticercosis/neurocysticercosis • Larval forms (Taenia solium) in the tissue of humans. • From ingestion of T. solium eggs usually autoinfection or from close contact with a tape worm carrier. • Presents as seizures, HA, increased ICP, change in vision, dizziness, ataxia, or confusion. • Praziquantel occasionally causes an inflammatory response in the CNS • Need close monitoring and high dose glucocorticoids

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