Three patients with probable aerotoxic syndrome.

Area of Science:

• Occupational Health
• Toxicology
• Aviation Medicine

Background:

• Aerotoxic syndrome is a debated health condition among aviation professionals.
• Regulatory bodies often dismiss long-term health effects due to perceived low chemical concentrations in cabin air.
• This study presents cases of aviation personnel experiencing health issues linked to their careers.

Purpose of the Study:

• To investigate potential health effects in aviation professionals experiencing ill health.
• To identify biomarkers of exposure and neurological damage.
• To explore genetic predispositions affecting toxin metabolism.

Main Methods:

• Case study of three aviation professionals (two pilots, one flight attendant).
• Symptom reporting including neurological and gastro-intestinal complaints.
• Biochemical analysis: butyrylcholinesterase levels, neuronal and glial auto-antibodies.
• Genetic polymorphism analysis: paraoxonase (PON-1) and cytochrome P450.

Main Results:

• Reported symptoms included headache, balance problems, fatigue, cognitive impairment, and gastro-intestinal issues.
• One case showed reduced butyrylcholinesterase, suggesting organophosphate exposure.
• Elevated neuronal and glial auto-antibodies indicated central nervous system injury.
• Genetic polymorphisms in PON-1 and cytochrome P450 were found, impairing organophosphate metabolism.

Conclusions:

• The findings suggest a link between aviation exposure and central nervous system injury.
• Biomarkers and genetic factors may play a role in aerotoxic syndrome.
• Further research is warranted to understand and confirm these health effects in aircrew.