Urinary 2,5-hexanedione excretion in cryptogenic polyneuropathy compared to the general Swedish population
| Autor: | Nicola Murgia, Mats Fredrikson, Jonas Lindh, Magnus Vrethem, Martin Tondel, Bodil Persson, Anna-Lena Hällsten |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Pediatrics
medicine.medical_specialty Medicin och hälsovetenskap Metabolite Urinary system Population Environmental Health and Occupational Health Physiology Urine 2 5-hexanedione Toxicology Medical and Health Sciences NO Excretion chemistry.chemical_compound Polyneuropathy medicine General anaesthesia 5-hexanedione education Morning Sweden education.field_of_study business.industry Research Public Health Environmental and Occupational Health General population Occupational exposure medicine.disease chemistry Cryptogenic business Safety Research |
| Zdroj: | Journal of Occupational Medicine and Toxicology; 8(21) (2013) Journal of Occupational Medicine and Toxicology (London, England) |
| ISSN: | 1745-6673 |
| Popis: | Background 2,5-hexanedione (2,5-HD) is the main neurotoxic metabolite of methyl-n-butyl ketone (MBK) and n-hexane, and known to cause polyneuropathy. The aim of our study was to compare the urinary levels of 2,5-HD between cases with cryptogenic polyneuropathy and the general Swedish population, and to elucidate the role of certain external factors. Methods Morning urine samples were collected from 114 cases with cryptogenic polyneuropathy (77 men and 37 women) and 227 referents (110 men and 117 women) randomly selected from the population registry. None had any current occupational exposure to n-hexane or MBK. The urine samples were analysed by a gas chromatographic method based on acidic hydrolysis. Results Cases had statistically higher urinary levels of 2,5-HD (0.48 mg/L) than the general population (0.41 mg/L) and men higher excretion than women (0.48 mg/L and 0.38 mg/L, respectively). There was no difference in 2,5-HD levels between current smokers and non-smokers. Occupational exposure to xylene, alcohol consumption and ever exposed to general anaesthesia were associated with lower excretion in men while for occupational exposure to nitrous oxide in women higher excretion was seen. Higher excretion of 2,5 HD was inversely related to increasing age. Conclusions Significantly higher levels of urinary 2,5-HD were seen in men and cryptogenic polyneuropathy cases seemingly unexposed to n-hexane. Hypothetically, this might be due to either differences in metabolic patterns or some concealed exposure. The difference in means between cases and the general population is small and can therefore not allow any firm conclusions of the causality, however. |
| Databáze: | OpenAIRE |
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