The TWiP quadfecta solves the case of the Traveler With Watery Diarrhea, and reveals that a heat-shock response regulated by a transcription factor protects human malaria parasites from the high temperatures of fever.
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Download TWiP #198 (39 MB .mp3, 64 minutes)
Links for this episode
- PWB on Facebook, Instagram, Twitter
- Malaria parasite resists fever due to heat shock response (Nat Micro)
- Malaria beats the heat (Nat Micro)
- Letters read on TWiP 198
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Case Study for TWiP 198
31 yo woman, previously healthy, traveled to Tanzania, went on 11 day long safari. One week later, at home, developed fever and severe headache, went into hospital. Thick blood smears negative, physical exam normal, small purple lesion near buttocks. Started on treatment for African tick bite fever. Did not get better, lesion grew in size. Biopsy of lesion, nothing remarkable on microscopy. Improved, sent home, 10 days another bout of fever that went down in 2 days. Lesion healed. PCR for plasmodium, Borrelia negative, but seroconverted for Rickettsia. Went home, a week later another 3 day bout of fever.
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Music by Ronald Jenkees