This Week in Parasitism

Vincent Racaniello•microbe.tv

TWiP is a monthly netcast about eukaryotic parasites. Vincent Racaniello and Dickson Despommier, science Professors from Columbia University, deconstruct parasites, how they cause illness, and how you can prevent infections.

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Episodes

TWiP #20 - The whipworm Trichuris trichiura

Vincent and Dickson continue their discussion of nematodes with the whipworm Trichuris trichiura . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Trichuris trichiura adult female (jpg) Trichuris trichiura adult male (jpg) Trichuris trichiura in situ (jpg) Trichuris trichiura life cycle (jpg) Exploitation of the intestinal microflora by T. muris Letters read on TWiP 20 Contact Send your questions and comments (email or mp3 file) to [email protected]. Subscribe (free) Cli...

Dec 17, 2010•1 hr 29 min

TWiP #19 - Enterobius vermicularis, the pinworm

Vincent and Dickson move on to nematodes with a discussion of the pinworm Enterobius vermicularis . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Enterobius vermicularis adult female (jpg) Enterobius vermicularis in appendix (jpg) Enterobius vermicularis embryonated eggs (jpg) Enterobius vermicularis life cycle (jpg) Letters read on TWiP 19 Contact Send your questions and comments (email or mp3 file) to [email protected]. Subscribe (free) Click here to receive an email...

Nov 20, 2010•1 hr 23 min

TWiP #18 - Cryptosporidium

Vincent and Dickson discuss the intracellular parasite Cryptosporidium, which causes diarrheal disease in most mammalian species. Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Cryptosporidium parvum electron micrograph (jpg) Cryptosporidium parvum meronts (jpg) Cryptosporidium parvum life cycle (jpg) Cryptosporidium page at CDC Letters read on TWiP 18 Contact Send your questions and comments (email or mp3 file) to [email protected]. Subscribe (free) Click here to recei...

Oct 27, 2010•1 hr 20 min

TWiP #17 - Entamoeba histolytica

Vincent and Dickson continue their discussion of protozoan parasites that cause diarrhea with a review of amebic dysentery caused by Entamoeba histolytica . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Entamoeba histolytica cyst (jpg) Entamoeba histolytica trophozoite (jpg) Entamoeba histolytica life cycle (jpg) Galactose prevents attachment of amoebae to cells (jpg) Entamoeba histolytica life cycle (jpg) Charcot-Leyden crystal (jpg) Letters read on TWiP 17 Conta...

Oct 06, 2010•1 hr 16 min

TWiP #16: Giardia

Vincent and Dickson review the life cycle and pathogenesis of the flagellated protozoan parasite Giardia lamblia . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Giardia lamblia trophozoite (jpg) Giardia lamblia cyst (jpg) Giardia lamblia life cycle (jpg) Heather's view of T. canis life cycle (pdf) Letters read on TWiP 16...

Sep 24, 2010•1 hr 19 min

TWiP #15: Tryp the light fantastic

Vincent and Dickson discuss the life cycle and pathogenesis of the protozoan parasite Trypanosoma . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Metacyclic trypanomastigote (jpg) Tsetse fly (jpg) T. brucei life cycle (jpg) T. brucei parasitemia (jpg) Kissing bug nymph (jpg) T. cruzi life cycle (jpg) Letters read on TWiP 15...

Sep 09, 2010•1 hr 27 min

TWiP #14 - Leishmania

Vincent and Dickson consider the life cycle and pathogenesis of the protozoan parasite Leishmania . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: L. braziliensis life cycle ( jpg ) L. donovani life cycle ( jpg ) L. tropica life cycle ( jpg ) L. major lesion ( jpg ) Transgenic mosquito delivers Leishmania vaccine (thanks, Geoffrey) Plasmodium falciparum accompanied human expansion out of Africa (thanks, Prasad) Who speaks for the guinea worm ? (thanks, Michael) Let...

Aug 12, 2010•1 hr 25 min

TWiP #13 - Toxoplasmosis

Vincent and Dickson continue their discussion of the obligate intracellular protozoan Toxoplasma gondii with a consideration of the clinical consequences of infection and pathogenesis. Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Isopod fish parasites (thanks, Kevin!) Farmscraper on Word Spy (thanks, Mitchell!) Toxoplasma and personalities (thanks, Greg!) Science podcast (July 2) on parasites and intelligence ( transcript - thanks, Jim!) Letters read on TWiP 13...

Jul 15, 2010•1 hr 25 min

TWiP #12 - Toxoplasma gondii

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 Lette...

Jun 18, 2010•1 hr 38 min

TWiP #11 - One times three million

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...

Jun 02, 2010•1 hr 27 min

TWiP #10 - Plasmodium life cycle

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...

May 20, 2010•1 hr 26 min

TWiP #9 - Mala aria

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: Malaria history at CDC Radio New Zealand show on hookworms (thanks James!) Tapeworm brain infection serious health concern (thanks Jim!) Pig farmers try to limit pork tapeworm spread (thanks Gopal!) Bizarre tongue-eating fish parasite (thanks Arsen!) Letters read on TWiP 9...

May 06, 2010•1 hr 22 min

TWiP #8 - Frog legs and parasite tales

Dickson reads his story about sparganosis caused by the diphyllobothroid tapeworm Spirometra mansonoides . Host links: Vincent Racaniello and Dickson Despommier Links for this episode: Spirometra life cycle ( jpg ) Dickson on vertical farming ( CNN episode on YouTube , thanks Jesse!) Laboratory identification of parasites ( CDC , thanks Michael!) Gold nanoparticles take out brain parasite ( Cosmos Magazine , thanks Gary!) Letters read on TWiP 8...

Apr 22, 2010•1 hr 23 min

TWiP #7 - Tapeworms are fantastic!

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 ...

Apr 09, 2010•1 hr 37 min

TWiP #6 - Tapeworms, the long and short of it

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 P...

Mar 25, 2010•1 hr 41 min

TWiP #5 - The nurse cell

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: Infective muscle larva ( jpg ) Schematic of a larva invading a muscle cell Nurse cell formation ( scroll down the page ) Dickson's gallery of Trichinella images Electron micrographs of stichocytes Weekly Science Picks Dickson Every Living Thing by Rob Dunn...

Mar 04, 2010•1 hr 19 min

TWiP #4 - Trichinella life cycle

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 tai...

Jan 30, 2010•1 hr 22 min

TWiP #3 - Trichinella spiralis

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: The History of Trichinella at Trichinella.org Parasite genome databases at the European Bioinformatics Institute List of parasite genome projects Weekly Science Picks Dickson The Doctor and the Devils...

Dec 27, 2009•1 hr 4 min

TWiP #2 - General parasitism

Vincent and Dick classify parasites according to whether or not they are transmitted by a vector, then consider the implications of long-lived parasites. Host links: Vincent Racaniello and Dickson Despommier

Dec 01, 2009•1 hr 5 min

TWiP #1 - Introduction to parasitism

Vincent and Dick provide an overview of parasites and parasitism. Host links: Vincent Racaniello and Dickson Despommier Weekly Science Picks Dick T he Black Cloud by Fred Hoyle Vincent Parasitic Diseases by Despommier et al....

Nov 13, 2009•57 min

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