Nickel exposure from keys: a Brazilian issue.
Nathalie Mie Suzuki1, Ida Alzira Gomes Duarte1,2, Mariana de Figueiredo Silva Hafner1
1Dermatology Clinic of the Santa Casa de São Paulo - São Paulo (SP), Brazil.
Anais Brasileiros De Dermatologia
|November 23, 2017
Summary
Nearly all common Brazilian keys release nickel, a common metal allergen. This widespread nickel release can negatively impact individuals with nickel allergies, highlighting the need for regulatory guidelines.
Area of Science:
- Allergy and Immunology
- Materials Science
- Dermatology
Background:
- Keys are a frequent source of exposure to metal allergens.
- Nickel allergy is a significant health concern for sensitized individuals.
- Previous research indicates potential for metal release from everyday objects.
Purpose of the Study:
- To assess nickel and cobalt release from the 5 most common Brazilian key brands.
- To quantify the prevalence and intensity of nickel and cobalt release.
- To inform public health strategies regarding metal allergen exposure.
Main Methods:
- Spot testing for nickel and cobalt was conducted on 5 popular Brazilian key brands.
- Qualitative and semi-quantitative analysis of metal release.
- Standardized testing protocols were employed.
Main Results:
- 100% of tested keys showed a positive nickel spot test reaction.
- 83.3% of keys exhibited a strong positive nickel reaction.
- 50% of keys demonstrated cobalt release.
Conclusions:
- Nickel release from keys is ubiquitous in Brazil.
- Widespread nickel exposure from keys poses a risk to nickel-sensitized individuals.
- Regulation of nickel release in key manufacturing is recommended for public health.
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