Volume 74, Issue 5 pp. 273-280
Original Article

Oxidized limonene and oxidized linalool – concomitant contact allergy to common fragrance terpenes

Johanna Bråred Christensson

Corresponding Author

Johanna Bråred Christensson

Department of Dermatology, Sahlgrenska Academy at University of Gothenburg, 413 45 Gothenburg, Sweden

Dermatochemistry, Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden

Correspondence: Johanna Bråred Christensson, Department of Dermatology, Sahlgrenska Academy at University of Gothenburg. Tel: +46 31 3421000; Fax: +46 31 821871. E-mail: [email protected]Search for more papers by this author
Ann-Therese Karlberg

Ann-Therese Karlberg

Dermatochemistry, Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96 Gothenburg, Sweden

Search for more papers by this author
Klaus E. Andersen

Klaus E. Andersen

Department of Dermatology and Allergy Centre, Odense University Hospital, University of Southern Denmark, 5000 Odense, Denmark

Search for more papers by this author
Magnus Bruze

Magnus Bruze

Department of Occupational and Environmental Dermatology, Skåne University Hospital, Lund University, 205 02 Malmö, Sweden

Search for more papers by this author
Jeanne D. Johansen

Jeanne D. Johansen

The National Allergy Research Centre, Department of Dermato-allergology, Gentofte Hospital, University of Copenhagen, 2900 Hellerup, Denmark

Search for more papers by this author
Begoña Garcia-Bravo

Begoña Garcia-Bravo

Department of Dermatology, University Hospital Virgen Macarena, 41007 Seville, Spain

Search for more papers by this author
Ana Giménez Arnau

Ana Giménez Arnau

Department of Dermatology, Hospital del Mar, Institut Mar d'Investigacions Médiques, Universitat Autònoma, 08003 Barcelona, Spain

Search for more papers by this author
Chee-Leok Goh

Chee-Leok Goh

National Skin Centre, 308205 Singapore, Singapore

Search for more papers by this author
Rosemary Nixon

Rosemary Nixon

Occupational Dermatology Research and Education Centre, Skin and Cancer Foundation, 3053 Victoria, Australia

Search for more papers by this author
Ian R. White

Ian R. White

Department of Cutaneous Allergy, St John's Institute of Dermatology, St Thomas' Hospital, SE1 7EH London, UK

Search for more papers by this author
First published: 26 February 2016
Citations: 55
Conflicts of interest: Magnus Bruze is a member of Rexpan, an expert panel financed by the Research Institute for Fragrance Materials (RIFM). Ann-Therese Karlberg has worked with Chemotechnique Diagnostics AB to develop the patch test material for oxidized linalool and oxidized R-limonene used in the study. The other authors have no interests to declare.

Summary

Background

Limonene and linalool are common fragrance terpenes. Both oxidized R-limonene and oxidized linalool have recently been patch tested in an international setting, showing contact allergy in 5.2% and 6.9% of dermatitis patients, respectively.

Objective

To investigate concomitant reactions between oxidized R-limonene and oxidized linalool in consecutive dermatitis patients.

Methods

Oxidized R-limonene 3.0% (containing limonene hydroperoxides 0.33%) and oxidized linalool 6% (linalool hydroperoxides 1%) in petrolatum were tested in 2900 consecutive dermatitis patients in Australia, Denmark, Singapore, Spain, Sweden, and the United Kingdom.

Results

A total of 281 patients reacted to either oxidized R-limonene or oxidized linalool. Of these, 25% had concomitant reactions to both compounds, whereas 29% reacted only to oxidized R-limonene and 46% only to oxidized linalool. Of the 152 patients reacting to oxidized R-limonene, 46% reacted to oxidized linalool, whereas 35% of the 200 patients reacting to oxidized linalool also reacted to oxidized R-limonene.

Conclusions

The majority of the patients (75%) reacted to only one of the oxidation mixtures, thus supporting the specificity of the reactions. The concomitant reactions to the two fragrance allergens suggest multiple sensitizations, which most likely reflect the exposure to the different fragrance materials in various types of consumer products. This is in accordance with what is generally seen for patch test reactions to fragrance materials.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.