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Learning and memory difficulties after environmental exposure to waterways containing toxin-producing Pfiesteria or Pfiesteria-like dinoflagellates

Grattan L, Oldach D, Perl T +10 more1998The LancetJournal Article
10.1016/s0140-6736(98)02132-1PubMedFree full text
CardiovascularEndocrine (ADH/ACTH/MSH)GastrointestinalHypothalamic-PituitaryImmune/InnateMusculoskeletalNeurologicalOcularRespiratory/Sinus
ActinomycetesBacterial EndotoxinsIndoor Mold (Stachybotrys, Aspergillus, etc.)MycotoxinsVolatile Organic Compounds (VOCs)Water-Damaged Buildings (WDB)

Abstract

People with environmental exposure to waterways in which Pfiesteria toxins are present are at risk of developing a reversible clinical syndrome characterised by difficulties with learning and higher cognitive functions. Risk of illness is directly related to degree of exposure, with the most prominent symptoms and signs occurring among people with chronic daily exposure to affected waterways.

Key Biomarkers

Alpha Melanocyte Stimulating Hormone (MSH)Immunoglobulin E (IgE)LeptinMatrix Metalloproteinase 9 (MMP9)Vascular Endothelial Growth Factor (VEGF)Visual Contrast Sensitivity (VCS)

Symptom Clusters

Gastrointestinal: excessive thirst, frequent urinationMusculoskeletal: muscle aches, joint pain, ice pick painNeurological: memory loss, difficulty with concentration, confusion, word finding difficulty, light sensitivityNeurological: tingling in extremitiesRespiratory: cough, shortness of breath, sinus congestionSystemic: fatigue, headache, night sweats, mood swings, appetite swings

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  • Possible estuary-associated syndrome: symptoms, vision, and treatment.Environmental Health Perspectives · 2001
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  • References (3)

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    • New 'phantom' dinoflagellate is the causative agent of major estuarine fish killsNature · 1992
    • Persisting learning deficits in rats after exposure to Pfiesteria piscicida.Environmental Health Perspectives · 1997
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