Browsing by Subject "nickel"

Sort by: Order: Results:

Now showing items 1-4 of 4
  • Leskinen, Anumaija; Tanhua-Tyrkkö, Merja; Salminen-Paatero, Susanna; Laurila, Julia; Kurhela, Kristian; Hou, Xiaolin; Bruzell, Filippa; Suutari, Tommy; Kangas, Satu; Rautio, Satu; Wendel, Cato Christian; Bourgeaux-Goget, Marie; Stordal, Solveig; Moussa, Joe; Isdahl, Ingunn; Gautier, Celine; Laporte, Elodie; Giuliani, Margaux; Bubendorff, Jacques; Fichet, Pascal (NKS Secretariat, 2021)
    NKS Report Series
  • Wisgrill, Lukas; Werner, Paulina; Jalonen, Erja; Berger, Angelika; Lauerma, Antti; Alenius, Harri; Fyhrquist, Nanna (2021)
    Background Nickel-induced allergic contact dermatitis (nACD) remains a major occupational skin disorder, significantly impacting the quality of life of suffering patients. Complex cellular compositional changes and associated immunological pathways are partly resolved in humans; thus, the impact of nACD on human skin needs to be further elucidated. Methods To decipher involved immunological players and pathways, human skin biopsies were taken at 0, 2, 48, and 96 hours after nickel patch test in six nickel-allergic patients. Gene expression profiles were analyzed via microarray. Results Leukocyte deconvolution of nACD-affected skin identified major leukocyte compositional changes at 48 and 96 hours, including natural killer (NK) cells, macrophage polarization, and T-cell immunity. Gene set enrichment analysis mirrored cellular-linked functional pathways enriched over time. NK cell infiltration and cytotoxic pathways were uniquely found in nACD-affected skin compared to sodium lauryl sulfate-induced irritant skin reactions. Conclusion These results highlight key immunological leukocyte subsets as well as associated pathways in nACD, providing insights into pathophysiology with the potential to unravel novel therapeutic targets.
  • Kluger, Nicolas (2021)
    Tattoos are not mentioned as a source of exposure to nickel. Traces of nickel are, however, almost inevitably found in tattoo inks as impurities and sometimes in tattooed skin. Whether nickel in tattoos has any health consequence is debated. We performed a narrative review of what is currently known about this topic. Today, nickel is frequently detected in inks, but at highly variable levels. It appears to be at higher concentrations in green, blue, and sometimes brown and violet inks. Only nickel allergy in tattooed individuals and nickel-associated tattoo ink allergy are addressed in the literature. Reports of tattoo ink allergy related to nickel are rare and heterogenous. Authors often neglect possible implications of other metals or dyes. A positive patch test is not enough to confirm the role of nickel in a reaction observed after tattooing. We found no report of any systemic complication attributed to nickel from tattoos. The Council of Europe ResAP(2008)1 bans the presence of nickel at high levels in tattoo inks, which is a safety net for individuals with nickel allergy. Large epidemiologic case-control studies with systematic biopsies on normal and inflamed tattoos and patch testing would help to understand the role of nickel in tattoo ink allergies.
  • Ervasti, Annika (Helsingin yliopisto, 2020)
    The aim of this study was to examine if eating Finnish cereals and oil seeds cause more health benefits or harm. Cadmium was considered as the chemical hazard and dietary fiber as the useful nutrient. In this study food consumptions, the heavy metal contents and exposures, fiber intake and the biggest safe doses for cereals and seeds were evaluated. DALYs (disability adjusted life years) were used to compare benefits and harms. Exposure was estimated using the statistical BIKE model. To date, no risk benefit analysis concerning cereal and seed consumption is known to have been done. A common method for risk benefit analysis has not yet been developed, but generally a stepwise approach is recommended. Of the foods examined, poppy and sunflower seeds contained the most cadmium, pumpkin seed the least. In the long term, the most consumed seed was sesame and the most consumed cereal was wheat. The greatest cadmium exposure was due to wheat consumption, and for nickel oat consumption. Wheat was clearly the biggest source of fiber. Low fiber intake resulted in more DALYs than cereals’ cadmium resulted in osteoporotic DALYs in 2012. Compared to the situation in 2012, significantly less DALYs were resulted in scenario where 232 g of whole grains per day are consumed. It is because in the scenario, DALYs caused by low fiber intake, which amount is much higher than cadmium DALYs, are not formed. Based on the results obtained, with bigger cereal consumption than in 2012, the health benefits outweigh the disadvantages, as the impact of reducing the DALYs due to low fiber intake is much more significant than the impact of the increase of cadmium DALYs caused by higher intake. In the future, it would be beneficial to have a more comprehensive study of the health effects of the foods examined. However, this requires a lot of information that was not available in this study.