This Week in Parasitism (science)
TWiP is a podcast about the tiny creatures that live in and on us.

Vincent and Dickson introduce the obligate intracellular protozoan Toxoplasma gondii, one of the most successful parasites on earth.

Host links: Vincent Racaniello and Dickson Despommier

Links for this episode:

  • Global clinical burden of malaria (PLoS Medicine)
  • T. gondii sporulated oocysts (jpg)
  • T. gondii tachyzoites in parasitophorous vacuole (jpg)
  • T. gondii life cycle (jpg)
  • Insect bioterrorism conference (thanks, Don!)
  • Parasite of the Day (thanks, Douglas!)
  • World Science Festival
  • Letters read on TWiP 12
  • Direct download: TWiP012.mp3
    Category:Science -- posted at: 7:00pm PDT

    Vincent and Dickson continue their discussion of malaria, with emphasis on clinical aspects of the disease.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

  • The quest for a malaria vaccine (Meet the Scientist 49)
  • Science issue on malaria and tuberculosis
  • Malaria pathogenesis (pdf)
  • Malaria pathogenesis (jpg)
  • Letters read on TWiP 11
  • Direct download: TWiP011.mp3
    Category:Science -- posted at: 11:00am PDT

    Vincent and Dickson trace the life cycle of Plasmodium in a mosquito and in a human host.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    • Mosquito cycle - sporogany (jpg)
    • Plasmodium falciparum cycle (jpg)
    • Plasmodium vivax cycle (jpg)
    • Plasmodium falciparum ring forms and gametocytes in blood (jpg)
    • Plasmodium stages (jpg)
    • Letters read on TWiP 10
    Direct download: TWiP010.mp3
    Category:Science -- posted at: 7:00pm PDT

    Vincent and Dickson move on to protozoan parasites with a discussion of the early history of malaria.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    Direct download: TWiP009.mp3
    Category:Science -- posted at: 7:20pm PDT

    Dickson reads his story about sparganosis caused by the diphyllobothroid tapeworm Spirometra mansonoides.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    Direct download: TWiP008.mp3
    Category:Science -- posted at: 9:30am PDT

    Vincent and Dickson continue their discourse on tapeworms, covering the fish and dog varieties.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    • FAT the enemy that is shortening your life is BANISHED. How? With sanitized tapeworms. Easy to swallow! (jpg).
    • D. latum life cycle (jpg)
    • D. latum adult (jpg)
    • Diphyllobothrim proglottid (jpg)
    • Diphyllobothrim bothria (jpg)
    • Coracidium hatching from egg (jpg)
    • Dog tapeworm life cycle (jpg)
    • The Alien lifecycle (jpg)
    Direct download: TWiP007.mp3
    Category:Science -- posted at: 7:30pm PDT

    Vincent and Dick talk about the anatomy and life cycle of beef and pork tapeworms, and why House was wrong about neurocysticercosis.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    • Taenia saginata life cycle (jpg)
    • Taenia saginata adult (jpg)
    • Taenia saginata scolex (jpg)
    • Taenia saginata gravid proglottid (jpg)
    • Taenia solium life cycle (jpg)
    • Taenia solium adult (jpg)
    • Taenia solium scolex (jpg)
    • Facial cancer in Tasmanian devils (thanks PhogDog!)

    Science Picks

    Dickson Peace through vaccine diplomacy by Peter Hotez
    Vincent Parasite Rex by Carl Zimmer

    Direct download: TWiP006.mp3
    Category:Science -- posted at: 9:30pm PDT

    Vincent and Dick discuss the nurse cell, a unique structure formed in the host muscle by Trichinella species.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    Weekly Science Picks

    Dickson Every Living Thing by Rob Dunn

    Direct download: TWiP005.mp3
    Category:Science -- posted at: 7:30pm PDT

    Vincent and Dick trace the life cycle of Trichinella spiralis in an infected host.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    • Trichinella life cycle (jpg)
    • Newborn larva entering muscle cell (jpg)
    • Adult T. spiralis in columnar epithelial cell (jpg)
    • Adult female T. spiralis (jpg)
    • Infective first stage T. spiralis larva in Nurse cell in muscle tissue (jpg)
    • Adult female T. spiralis with fully formed larvae in uterus (jpg)
    • Adult male T. spiralis with claspers on tail (jpg)
    • Clinical correlations in trichinosis (jpg)
    • Letters read on TWiP #4

    Weekly Science Picks

    Dickson David Scharf's pictures of microbial life
    Vincent
    The Nobel Laureate Meetings at Lindau

    Direct download: TWiP004.mp3
    Category:Science -- posted at: 9:00am PDT

    Vincent and Dick distinguish among intracellular and extracellular parasites, then discuss the history and general characteristics of Trichinella spiralis.

    Host links: Vincent Racaniello and Dickson Despommier

    Links for this episode:

    Weekly Science Picks

    Dickson The Doctor and the Devils

    Direct download: TWiP003.mp3
    Category:Science -- posted at: 3:30pm PDT