Abstract | BACKGROUND: OBJECTIVES: To test our hypothesis that patients with stronger patch test reactions to formaldehyde are more likely to react to quaternium-15, attesting to the aetiological role for formaldehyde in such co-reactivity. METHODS: Retrospective analysis of all patients patch tested with formaldehyde and quaternium-15 in the European baseline series between 1994 and 2009 (TRUE test). RESULTS: In a group of 86 patients allergic to formaldehyde, 73% co-reacted to quaternium-15; in the subgroup of 70 women, the percentage was 83. In both groups, more reactions were observed to quaternium-15 in the patients with a ++ reaction compared to the patients with a + reaction to formaldehyde. Conversely, stronger reactions to quaternium-15 were significantly more often associated with formaldehyde sensitivity in a group of 107 patients reacting to quaternium-15 and a subgroup of 88 women. In men, such effects were not observed and only 5 of 16 (31%) men allergic to formaldehyde also reacted to quaternium-15. CONCLUSIONS:
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Authors | Anton C de Groot, Janine Blok, Pieter-Jan Coenraads |
Journal | Contact dermatitis
(Contact Dermatitis)
Vol. 63
Issue 4
Pg. 187-91
(Oct 2010)
ISSN: 1600-0536 [Electronic] England |
PMID | 20573164
(Publication Type: Journal Article)
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Copyright | © 2010 John Wiley & Sons A/S. |
Chemical References |
- Preservatives, Pharmaceutical
- Formaldehyde
- quaternium-15
- Methenamine
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Topics |
- Cross Reactions
- Dermatitis, Allergic Contact
(etiology)
- Female
- Formaldehyde
(adverse effects)
- Humans
- Male
- Methenamine
(adverse effects, analogs & derivatives)
- Patch Tests
- Preservatives, Pharmaceutical
(adverse effects)
- Retrospective Studies
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