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Träfflista för sökning "hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Dermatologi och venereologi) ;pers:(Hagvall Lina 1978)"

Sökning: hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Dermatologi och venereologi) > Hagvall Lina 1978

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1.
  • Nyman, Gunnar, 1954, et al. (författare)
  • Contact allergy to beeswax and propolis among patients with cheilitis or facial dermatitis
  • 2019
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 81:2, s. 110-116
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Beeswax, both white and yellow, has many uses, such as in lip balm. This material can cause contact allergy, although not many cases have been described. Methods: Ninety-five patients with contact cheilitis, facial eczema or a suspicion of contact allergy to beeswax were patch tested with yellow and white beeswax and with propolis, in addition to the Swedish baseline series. Patients who reacted positively to beeswax were additionally tested with caffeic acid, and two derivatives thereof that are believed to be important haptens in propolis. Results: Seventeen patients had positive reactions to beeswax. Fourteen of these patients had been tested with both yellow and white beeswax. Among those 14, eight had positive reactions to both types of wax, five only to yellow wax, and one only to white wax. Of the 10 wax-positive patients tested with caffeic acid derivatives, three reacted positively. Fourteen beeswax-positive patients also had positive reactions to propolis. Conclusion: Patch testing cheilitis patients is important, as contact allergy is common. Our suggestion is to patch test, apart from the baseline series and the patient's own products, also with beeswax and propolis. Many beeswax-allergic cheilitis patients would not have been diagnosed with a relevant contact allergy if only the Swedish baseline series had been used.
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3.
  • Hagvall, Lina, 1978, et al. (författare)
  • Contact allergy to oxidized geraniol among Swedish dermatitis patients-A multicentre study by the Swedish Contact Dermatitis Research Group
  • 2018
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 79:4, s. 232-238
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Geraniol is a widely used fragrance terpene, and is included in fragrance mix I. Geraniol is prone to autoxidation, forming the skin sensitizers geranial, neral, and geraniol-7-hydroperoxide. Oxidized geraniol has previously been patch tested in 1 clinic, giving 1% to 4.6% positive reactions in consecutive patients when tested at 2% to 11%. Aim: To compare test reactions to pure and oxidized geraniol, to compare 2 different test concentrations of oxidized geraniol and to investigate the pattern of concomitant reactions to fragrance markers of the baseline series in a multicentre setting. Methods: One thousand four hundred and seventy-six consecutive patients referred for patch testing were patch tested with geraniol 6% pet. and oxidized geraniol 6% and 11% pet. Results: Pure geraniol 6% pet., oxidized geraniol 6% pet. and oxidized geraniol 11% pet. gave 1%, 3% and 8% positive patch test reactions and 0.7%, 3% and 5% doubtful reactions, respectively. Approximately 50% of the patients with doubtful reactions to oxidized geraniol 6% pet. had positive reactions to oxidized geraniol 11% pet. Conclusions: Oxidized geraniol 11% pet. provides better detection than oxidized geraniol 6% pet. As most patients reacted only to oxidized geraniol, it is important to explore further whether oxidized geraniol should be included in a baseline patch test series.
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4.
  • Isaksson, Marléne, et al. (författare)
  • Exclusion of Disperse Orange 3 is possible from the textile dye mix present in the Swedish baseline patch test series. A study by the Swedish Contact Dermatitis Research Group
  • 2022
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 88:1, s. 54-59
  • Tidskriftsartikel (refereegranskat)abstract
    • Background The textile dye mix (TDM) 6.6% in petrolatum contains Disperse Blue (DB) 35, Disperse Yellow 3, Disperse Orange (DO) 1 and 3, Disperse Red 1 and 17, and DB 106 and 124. The most frequent allergen in TDM-positive patients is DO 3. Around 85% of para-phenylenediamine (PPD)-allergic dermatitis patients have been positive to DO 3. There has been a discussion to exclude DO 3 from TDM 6.6% because of strong simultaneous reactions to TDM and PPD. Objectives To study if DO 3 can be excluded from TDM 6.6%. Methods Patch tests were performed on 1481 dermatitis patients with TDM 6.6%, TDM 7.0% (without DO 3 but the other disperse dyes at 1.0% each), DO 3 1.0%, and PPD 1.0% pet. Results Contact allergy to TDM 6.6% was 3.6% and to TDM 7.0% was 3.0%. All 26 DO 3-positive patients were positive to PPD. The 44 patients positive to TDM 7.0% plus the 13 positive to PPD and TDM 6.6% but negative to TDM 7.0% were 57, outnumbering the 53 positive to TDM 6.6%. Conclusion TDM 7.0% can replace TDM 6.6% in the Swedish baseline series, since TDM 7.0% together with PPD 1.0% will detect patients with textile dye allergy.
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5.
  • Malmberg, Per, 1974, et al. (författare)
  • Imaging mass spectrometry for novel insights into contact allergy - a proof-of-concept study on nickel
  • 2018
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 78:2, s. 109-116
  • Tidskriftsartikel (refereegranskat)abstract
    • Background. In spite of extensive regulation to limit exposure, nickel remains the main cause of contact allergy in the general population. More detailed knowledge on the skin uptake of haptens is required. So far, no method exists for the visualization of this clinically relevant hapten and its distribution in the skin. Objectives. To show, in terms of a proof of concept, that imaging mass spectrometry [time of flight secondary ion mass spectrometry (ToF-SIMS)] can be applied for investigation of the penetration and distribution of nickel in human skin. Method. Full-thickness human skin obtained from breast reduction surgery was exposed to nickel sulfate (5% in deionized water) for 24 h in Franz-type diffusion cells. Biopsies were obtained from nickel-treated samples and control (deionized water). The tissue was sliced, and analysed with ToF-SIMS, generating high-resolution images of ion distribution in the epidermis and upper dermis. Results. The skin layers could be discerned from the ToF-SIMS data, particularly on the basis of the collagen signal. Nickel ions were localized to the stratum corneum and upper epidermis. Conclusions. This is the first time that ToF-SIMS has been applied to trace the distribution of a hapten in human skin. Proof of principle was shown for nickel, and the technique can, in the future, be expanded for investigation of the skin distribution of clinically relevant sensitizers in general.
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6.
  • Andernord, D., et al. (författare)
  • Contact allergy to haptens in the Swedish baseline series: Results from the Swedish Patch Test Register (2010 to 2017)
  • 2022
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 86:3, s. 175-188
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Allergic contact dermatitis has considerable public health impact and causative haptens vary over time. Objectives To report the prevalence of contact allergy to allergens in the Swedish baseline series 2010 to 2017, as registered in the Swedish Patch Test Register. Methods Results and demographic information for patients tested with the Swedish baseline series in 2010 to 2017 were analysed. Results Data for 21 663 individuals (females 69%) were included. Females had significantly more positive patch tests (54% vs 40%). The reaction prevalence rates were highest for nickel sulfate (20.7%), fragrance mix I (7.1%), Myroxylon pereirae (6.9%), potassium dichromate (6.9%), cobalt chloride (6.8%), methylchloroisothiazolinone/methylisothiazolinone (MCI/MI; 6.4%), MI (3.7%), colophonium (3.5%), fragrance mix II (3.2%), and formaldehyde (3.2%). Myroxylon pereirae reaction prevalence increased from 5% in 2010 to 9% in 2017 and that for methyldibromo glutaronitrile from 3.1% to 4.6%. MCI/MI and MI reactions decreased in prevalence after 2014. Nickel reaction prevalence decreased among females aged 10 to 19 years. Conclusions Nickel remains the most common sensitizing agent, with reaction prevalence decreasing among females younger than 20 years. The changes in MCI/MI and MI reaction prevalence mirrored those in Europe. The register can reveal changes in contact allergy prevalence over time among patients patch tested in Sweden.
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7.
  • Andersch-Björkman, Ylva, et al. (författare)
  • Air-oxidized linalool elicits eczema in allergic patients-a repeated open application test study.
  • 2014
  • Ingår i: Contact dermatitis. - : Wiley. - 1600-0536 .- 0105-1873. ; 70:3, s. 129-38
  • Tidskriftsartikel (refereegranskat)abstract
    • Linalool is a commonly used fragrance terpene that forms potent sensitizers upon oxidation. In a recent multicentre study, we found that 7% of 2900 patients showed positive patch test reactions to oxidized linalool at 6.0%. No elicitation studies have been performed.
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8.
  • Bennike, Niels H., et al. (författare)
  • Allergic contact dermatitis caused by hydroperoxides of limonene and dose-response relationship-A repeated open application test (ROAT) study
  • 2019
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873 .- 1600-0536. ; 80:4, s. 208-216
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Contact allergy to oxidized limonene, with hydroperoxides of limonene (Lim-OOHs) as the main allergens, is common. However, high proportions of weak positive and doubtful patch test reactions have been reported. Objectives: To determine the clinical relevance, elicitation threshold and dose-response relationship of Lim-OOHs in individuals with a positive or doubtful patch test reaction to standard Lim-OOHs 0.3% pet. Methods: A multicentre 3-week double-blind vehicle-controlled repeated open application test (ROAT) study with a simulated fine fragrance containing Lim-OOHs at 1260, 420 and 140 ppm, equal to a dose/area per application of Lim-OOHs of 3.0, 0.99 and 0.33 mu g/cm(2), was performed. Results: Among 11 subjects allergic to Lim-OOHs, 11 (100%), 7 (64%), and 3 (27%), respectively, reacted to the applied doses. No reactions were seen in 17 healthy controls exposed to the highest dose. This difference in reactivity was statistically significant (P < 0.0001). Among 13 subjects with doubtful patch test reactions to Lim-OOHs, two (15%) had positive ROAT reactions to the highest Lim-OOH dose applied (P = 0.36 as compared with controls). Conclusions: Contact allergy to Lim-OOHs is of clinical relevance in patients with positive patch test reactions. A doubtful patch test reaction to Lim-OOHs 0.3% pet. can be of clinical relevance.
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10.
  • Delaine, Tamara, 1981, et al. (författare)
  • Epoxyalcohols: bioactivation and conjugation required for skin sensitization.
  • 2014
  • Ingår i: Chemical research in toxicology. - : American Chemical Society (ACS). - 1520-5010 .- 0893-228X. ; 27:10, s. 1860-70
  • Tidskriftsartikel (refereegranskat)abstract
    • Allylic alcohols, such as geraniol 1, are easily oxidized by varying mechanisms, including the formation of both 2,3-epoxides and/or aldehydes. These epoxides, aldehydes, and epoxy-aldehydes can be interconverted to each other, and the reactivity of them all must be considered when considering the sensitization potential of the parent allylic alcohol. An in-depth study of the possible metabolites and autoxidation products of allylic alcohols is described, covering the formation, interconversion, reactivity, and sensitizing potential thereof, using a combination of in vivo, in vitro, in chemico, and in silico methods. This multimodal study, using the integration of diverse techniques to investigate the sensitization potential of a molecule, allows the identification of potential candidate(s) for the true culprit(s) in allergic responses to allylic alcohols. Overall, the sensitization potential of the investigated epoxyalcohols and unsaturated alcohols was found to derive from metabolic oxidation to the more potent aldehyde where possible. Where this is less likely, the compound remains weakly or nonsensitizing. Metabolic activation of a double bond to form a nonconjugated, nonterminal epoxide moiety is not enough to turn a nonsensitizing alcohol into a sensitizer, as such epoxides have low reactivity and low sensitizing potency. In addition, even an allylic 2,3-epoxide moiety is not necessarily a potent sensitizer, as shown for 2, where formation of the epoxide weakens the sensitization potential.
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