Urinary 2,5-hexanedione excretion in cryptogenic polyneuropathy compared to the general Swedish population
(2013) In Journal of Occupational Medicine and Toxicology 8(21).- Abstract
- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4042879
- author
- Persson, Bodil LU ; Vrethem, Magnus ; Murgia, Nicola ; Lindh, Jonas ; Hallsten, Anna-Lena ; Fredrikson, Mats and Tondel, Martin
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Occupational exposure, Sweden, General population, 5-hexanedione, 2, Urine, Polyneuropathy, Cryptogenic
- in
- Journal of Occupational Medicine and Toxicology
- volume
- 8
- issue
- 21
- publisher
- BioMed Central (BMC)
- external identifiers
-
- wos:000322598500001
- scopus:84880869460
- pmid:23898939
- ISSN
- 1745-6673
- DOI
- 10.1186/1745-6673-8-21
- language
- English
- LU publication?
- yes
- id
- 1fbd1af7-f50c-4754-ae3b-3563f7ff7aac (old id 4042879)
- date added to LUP
- 2016-04-01 13:56:47
- date last changed
- 2022-02-26 23:59:27
@article{1fbd1af7-f50c-4754-ae3b-3563f7ff7aac,
abstract = {{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.}},
author = {{Persson, Bodil and Vrethem, Magnus and Murgia, Nicola and Lindh, Jonas and Hallsten, Anna-Lena and Fredrikson, Mats and Tondel, Martin}},
issn = {{1745-6673}},
keywords = {{Occupational exposure; Sweden; General population; 5-hexanedione; 2; Urine; Polyneuropathy; Cryptogenic}},
language = {{eng}},
number = {{21}},
publisher = {{BioMed Central (BMC)}},
series = {{Journal of Occupational Medicine and Toxicology}},
title = {{Urinary 2,5-hexanedione excretion in cryptogenic polyneuropathy compared to the general Swedish population}},
url = {{https://lup.lub.lu.se/search/files/3680776/4281425.pdf}},
doi = {{10.1186/1745-6673-8-21}},
volume = {{8}},
year = {{2013}},
}