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Bruze M, Isaksson M, Gruvberger B, Andersen KE, Gonçalo M, Goossens A, Johansen JD, Maibach HI, Rustemeyer T, Le Coz CJ, White IR. Patch testing with methylchloroisothiazolinone/methylisothiazolinone 200 ppm aq. detects significantly more contact allergy than 100 ppm. A multicentre study within the European Environmental and Contact Dermatitis Research Group. Contact Dermatitis 2014; 71:31-4. [DOI: 10.1111/cod.12241] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 02/19/2014] [Accepted: 02/22/2014] [Indexed: 11/27/2022]
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102
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Bruze M, Goossens A, Isaksson M. Recommendation to increase the test concentration of methylchloroisothiazolinone/methylisothiazolinone in the European baseline patch test series - on behalf of the European Society of Contact Dermatitis and the European Environmental and Contact Dermatit. Contact Dermatitis 2014; 71:35-40. [DOI: 10.1111/cod.12240] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 02/20/2014] [Accepted: 02/22/2014] [Indexed: 11/28/2022]
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103
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Isaksson M, Gruvberger B, Gonçalo M, Goossens A, Le Coz CJ, Bruze M. Repeated open application test with methylisothiazolinone in individuals sensitive to methylchloroisothiazolinone/methylisothiazolinone. Contact Dermatitis 2014; 70:244-6. [DOI: 10.1111/cod.12215] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 01/14/2014] [Indexed: 11/28/2022]
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104
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Isaksson M, Gruvberger B, Bruze M. Can methylisothiazolinone be patch tested in petrolatum? Contact Dermatitis 2014; 70:240-2. [DOI: 10.1111/cod.12188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 12/05/2013] [Indexed: 11/28/2022]
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105
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Isaksson M, Gruvberger B, Bruze M. Patch testing with serial dilutions of various isothiazolinones in patients hypersensitive to methylchloroisothiazolinone/methylisothiazolinone. Contact Dermatitis 2014; 70:270-5. [DOI: 10.1111/cod.12184] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 10/17/2013] [Accepted: 11/26/2013] [Indexed: 11/30/2022]
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106
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Isaksson M, Inerot A, Lidén C, Lindberg M, Matura M, Möller H, Stenberg B, Bruze M. Multicentre patch testing with fragrance mix II and hydroxyisohexyl 3-cyclohexene carboxaldehyde by the Swedish Contact Dermatitis Research Group. Contact Dermatitis 2014; 70:187-9. [DOI: 10.1111/cod.12156] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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107
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Isaksson M, Bråred-Christensson J, Engfeldt M, Lindberg M, Matura M, Möller H, Ryberg K, Stenberg B, Svedman C, Bruze M. Patch testing with formaldehyde 2.0% in parallel with 1.0% by the Swedish contact dermatitis research group. Acta Derm Venereol 2013. [PMID: 24337098 DOI: 10.2340/00015555‐1748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In a multicentre study consecutively patch-tested dermatitis patients were tested simultaneously with 1.0% and 2.0% (w/v) formaldehyde in aqua applied with a micropipette (15 µl) to the filter paper disc in Finn Chambers (0.30 mg/cm(2) and 0.60 mg/cm(2), respectively). A total of 2,122 dermatitis patients were patch-tested. In all, 77 (3.6%) patients reacted positively to formaldehyde; 37 reacted only to 2.0%, 35 reacted to both concentrations and 5 patients reacted only to 1.0%. Significantly more patients were thus diagnosed with contact allergy to formaldehyde with 2.0% compared to 1.0% (p < 0.001) without causing more irritant reactions. The detected number of isolated allergic reactions to the 2 formaldehyde-releasers in the Swedish baseline series and not to formaldehyde itself raises the question whether quaternium-15 1.0% and diazolidinyl urea 2.0% should be present in the Swedish baseline series.
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108
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Ahlgren C, Isaksson M, Möller H, Axéll T, Liedholm R, Bruze M. The necessity of a test reading after 1 week to detect late positive patch test reactions in patients with oral lichen lesions. Clin Oral Investig 2013; 18:1525-31. [DOI: 10.1007/s00784-013-1122-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 09/24/2013] [Indexed: 10/26/2022]
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109
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Isaksson M, Engfeldt M, Zimerson E, Bruze M. Contact allergy to two synthetic plastics in an orthopaedic engineer. Contact Dermatitis 2013; 69:257-9. [PMID: 24028786 DOI: 10.1111/cod.12089] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/11/2013] [Accepted: 03/14/2013] [Indexed: 11/27/2022]
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110
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Dahlin J, Engfeldt M, Svedman C, Mowitz M, Zimerson E, Isaksson M, Hindsén M, Bruze M. Chemical burns caused by trifluoroacetic acid. Contact Dermatitis 2013; 69:176-80. [DOI: 10.1111/cod.12059] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 12/20/2012] [Accepted: 12/31/2012] [Indexed: 11/30/2022]
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111
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Pálsson SE, Howard BJ, Bergan TD, Paatero J, Isaksson M, Nielsen SP. A simple model to estimate deposition based on a statistical reassessment of global fallout data. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2013; 121:75-86. [PMID: 22476088 DOI: 10.1016/j.jenvrad.2012.03.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 03/03/2012] [Accepted: 03/07/2012] [Indexed: 05/31/2023]
Abstract
Atmospheric testing of nuclear weapons began in 1945 and largely ceased in 1963. Monitoring of the resulting global fallout was carried out globally by the Environmental Measurements Laboratory and the UK Atomic Energy Research Establishment as well as at national level by some countries. A correlation was identified between fallout deposition and precipitation and an uneven distribution with latitude. In this study, the available data from 1954 to 1976 for (90)Sr and (137)Cs were reanalysed using analysis of covariance (ANCOVA) and logarithmically transformed values of the monthly deposition density as the response variable. Generalized additive models (GAM) were used to explore the relationship of different variables to the response variable and quantify the explanatory power that could be achieved. The explanatory variables which consistently explained most of the variability were precipitation at each site, latitude and change with time and a simple linear model was produced with similar explanatory power as the GAM. The estimates improved as the temporal resolution of the precipitation data increased. A good log-log fit could be obtained if a bias of about 1-6 mm precipitation per month was added, this could be interpreted as dry deposition which is not otherwise accounted for in the model. The deposition rate could then be explained as a simple non-linear power function of the precipitation rate (r(0.2-0.6) depending on latitude band). A similar non-linear power function relationship has been the outcome of some studies linking wash-out and rain-out coefficients with rain intensity. Our results showed that the precipitation rate was an important parameter, not just the total amount. The simple model presented here allows the recreation of the deposition history at a site, allowing comparison with time series of activity concentrations for different environmental compartments, which is important for model validation.
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112
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Ahlgren C, Axéll T, Möller H, Isaksson M, Liedholm R, Bruze M. Contact allergies to potential allergens in patients with oral lichen lesions. Clin Oral Investig 2013; 18:227-37. [PMID: 23455574 DOI: 10.1007/s00784-013-0950-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 02/13/2013] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The aim of the present controlled study was to investigate a possible relationship between contact allergies to potential allergens and oral lichen lesions. METHODS Eighty-three patients with oral lichen lesions (OLL) and control groups of age- and gender-matched dermatitis patients (DP, n = 83) and patch-tested dermatitis patients randomly selected from files (PSFF, n = 319) were included in the study. OLL and DP groups were patch-tested epicutaneously and examined intraorally. RESULTS The frequencies of contact allergy to mercury and carvone were statistically higher in the OLL group than in the DP group. Surfaces of amalgam and composite restorations were statistically more frequent in the OLL group compared to the DP group. Contact allergy to nickel and colophony, the latter with a statistically significant difference, was more common in the DP group. The numerical difference found for nickel allergy was, however, not significant comparing the OLL and PSFF groups. CONCLUSION Contact allergy to mercury was overrepresented in patients with OLL and has been reported in previous studies, but the present finding of an overrepresentation of contact allergy to carvone in patients with oral lichen lesions has not been reported previously. CLINICAL RELEVANCE Carvone, in addition to mercury and gold, as previously suggested, can be one of the causative or maintenant factors for oral lichen lesions. Carvone-hypersensitive patients with oral lichen lesions should therefore avoid carvone-containing products for oral use.
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113
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Olausson EA, Brock C, Drewes AM, Grundin H, Isaksson M, Stotzer P, Abrahamsson H, Attvall S, Simrén M. Measurement of gastric emptying by radiopaque markers in patients with diabetes: correlation with scintigraphy and upper gastrointestinal symptoms. Neurogastroenterol Motil 2013; 25:e224-32. [PMID: 23316944 DOI: 10.1111/nmo.12075] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Scintigraphy, the gold standard to measure gastric emptying, is expensive and not widely available. Therefore, we compared emptying of radiopaque markers (ROM) from the stomach, by use of fluoroscopy, with scintigraphy in patients with insulin-treated diabetes. METHODS On the same day we measured gastric emptying of 20 ROM using fluoroscopy and scintigraphic emptying of a standard solid meal. The subjects also completed a validated gastrointestinal (GI) symptom questionnaire. KEY RESULTS We included 115 patients with insulin-treated diabetes (median age 53, range 21-69 years; 59 women). A moderately strong correlation was demonstrated between scintigraphic (% retained at 2 h) and ROM emptying (markers retained at 6 h) (r = 0.47; P < 0.0001). Eighty-three patients had delayed gastric emptying with scintigraphy, whereas only 29 patients had delayed emptying of ROM. Of the 29 patients with delayed emptying of ROM, 28 also had delayed scintigraphic emptying. The sensitivity and specificity of the ROM test was 34% and 97%, respectively. Significant correlations were only noted between scintigraphic gastric emptying and GI symptom severity, with the strongest correlations for fullness/early satiety (r = 0.34; P < 0.001) and nausea/vomiting (r = 0.30; P < 0.001). CONCLUSIONS & INFERENCES A gastric emptying test with ROM is a widely available screening method to detect delayed gastric emptying in patients with diabetes, where a positive result seems reliable. However, a normal ROM test does not exclude delayed gastric emptying, and if the clinical suspicion of gastroparesis remains, scintigraphy should be performed. Results from scintigraphy also correlate with GI symptom severity, which ROM test did not.
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114
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Malinauskiene L, Bruze M, Ryberg K, Zimerson E, Isaksson M. Contact allergy from disperse dyes in textiles-a review. Contact Dermatitis 2013; 68:65-75. [DOI: 10.1111/cod.12001] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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115
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Malinauskiene L, Isaksson M. Protein contact dermatitis caused by allergy to chapatti flour. Acta Derm Venereol 2013; 93:91-3. [PMID: 22735611 DOI: 10.2340/00015555-1365] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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116
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Ström Holst B, Hagberg Gustavsson M, Grapperon-Mathis M, Lilliehöök I, Johannisson A, Isaksson M, Lindhe A, Axnér E. Canine Herpesvirus During Pregnancy and Non-Pregnant Luteal Phase. Reprod Domest Anim 2012; 47 Suppl 6:362-5. [DOI: 10.1111/rda.12099] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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117
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Engfeldt M, Isaksson M, Zimerson E, Bruze M. Several cases of work-related allergic contact dermatitis caused by isocyanates at a company manufacturing heat exchangers. Contact Dermatitis 2012; 68:175-80. [PMID: 23046053 DOI: 10.1111/j.1600-0536.2012.02167.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND A 43-year-old woman was referred by her occupational health service with suspected occupational contact dermatitis. In connection with the investigation, a workplace visit was undertaken at her company, which used an adhesive based on pre-polymeric diphenylmethane diisocyanate in one of its units. During the visit, we became aware of six other employees with skin problems who were then referred to our department for investigation. OBJECTIVES To investigate the seven employees complaining about skin problems. METHODS Seven employees were patch tested with a baseline series, an isocyanate series, and a series with work material. RESULTS Five of seven patients had occupational contact allergy. Four reacted to isocyanate-related test preparations, and one to a cleanser used at the workplace. CONCLUSIONS Workplace visits constitute an important part of an occupational investigation, as they might give a broader picture of the problems at a company. In this case, it was found that 5 of 100 employees currently had or had previously had occupation-related skin problems. Owing to 'healthy worker selection', some of these patients might have been missed if we had not performed a full-scale workplace visit.
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Engfeldt M, Goossens A, Isaksson M, Zimerson E, Bruze M. The outcome of 9 years of consecutive patch testing with 4,4′-diaminodiphenylmethane and 4,4′-diphenylmethane diisocyanate. Contact Dermatitis 2012; 68:98-102. [DOI: 10.1111/j.1600-0536.2012.02158.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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119
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Malinauskiene L, Zimerson E, Bruze M, Ryberg K, Isaksson M. Are allergenic disperse dyes used for dyeing textiles? Contact Dermatitis 2012; 67:141-8. [DOI: 10.1111/j.1600-0536.2012.02129.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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120
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Goon ATJ, Bruze M, Zimerson E, Goossens A, Goh CL, Isaksson M. High frequency of false-positive reactions in attempted patch testing with acrylate/methacrylate mixes. Contact Dermatitis 2012; 67:157-61. [DOI: 10.1111/j.1600-0536.2012.02106.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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121
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Tammela M, Lindberg M, Isaksson M, Inerot A, Rudel J, Berne B. Patch testing with own cosmetics-a prospective study of testing and reporting of adverse effects to the Swedish Medical Products Agency. Contact Dermatitis 2012; 67:42-6. [DOI: 10.1111/j.1600-0536.2012.02058.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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122
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Isaksson M, Möller H, Bruze M. The reliability of visual scoring of patch test reactions revisited. Contact Dermatitis 2012; 66:163. [DOI: 10.1111/j.1600-0536.2011.02021.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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123
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Ryberg K, Goossens A, Isaksson M, Gruvberger B, Zimerson E, Bruze M. Patch testing with a textile dye mix in a baseline series in two countries. Acta Derm Venereol 2011; 91:422-7. [PMID: 21547346 DOI: 10.2340/00015555-1098] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Disperse dyes are the most common contact sensitizers among textile dyes. The main aim of this study was to investigate the outcome of patch testing with a textile dye mix 6.6%. A total of 2,049 patients from Sweden and 497 from Belgium were tested with the mix, consisting of Disperse (D) Blue 35, D Yellow 3, D Orange 1 and 3, D Red 1 and 17, 1.0% each, and D Blue 106 and D Blue 124, 0.3% each. Of the total number, 65 patients, 2.6%, tested positively to the mix, 4.2% of the Belgian patients and 2.1% of the Swedish patients. Patch testing with the mix 6.6% revealed significantly more patients with contact allergy compared with testing with a previous mix 3.2% (p < 0.01). Contact allergy to the mix was significantly more common in the Belgian than in the Swedish patients.
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124
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Ryberg K, Goossens A, Isaksson M, Gruvberger B, Zimerson E, Persson L, Bruze M. Patch testing of patients allergic to Disperse Blue 106 and Disperse Blue 124 with thin-layer chromatograms and purified dyes. Contact Dermatitis 2011; 60:270-8. [PMID: 19397619 DOI: 10.1111/j.1600-0536.2009.01538.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Former investigations have demonstrated that patch test preparations containing Disperse Blue (DB) 106 and DB 124 are impure. OBJECTIVE To investigate the significance of impurities in preparations of disperse dyes with regard to contact allergy. MATERIALS/METHODS 21 patients allergic to DB 106 and/or DB 124 were tested with dilution series of commercial and purified DB 106 and DB 124. All patients were additionally tested with thin-layer chromatography (TLC) strips made from the commercial preparations containing DB 106 and 18 of them also with TLC strips containing DB 124. RESULTS 13 of 21 and 12/18 patients tested positively to the strips of DB 106 and DB 124, respectively. Among these patients, 4/13 and 5/12, respectively, did not react to the main spot but reacted to other spots. Dilution series of purified DB 106 and DB 124 were positive in 10 patients each, while 16 and 15 patients, respectively, tested positively to the dilution series of the corresponding commercial disperse dye. CONCLUSION Approximately 25% of the patients, diagnosed as contact allergic to DB 106 and DB 124, only reacted to impurities in the patch test preparations. This has implications for diagnosis and prevention.
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125
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Isaksson M, Inerot A, Lidén C, Matura M, Stenberg B, Möller H, Bruze M. Multicentre patch testing with a resol resin based on phenol and formaldehyde. Contact Dermatitis 2011. [PMID: 21595700 DOI: 10.1111/j.1600‐0536.2011.01921.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Contact allergy to phenol-formaldehyde resins (PFRs) based on phenol and formaldehyde is not detected by a p-tertiary-butylphenol-formaldehyde resin (PTBP-FR) included in most baseline patch test series. OBJECTIVES To investigate the rate of contact allergy to PFR-2 (a mixture of monomers and dimers from a resol resin based on phenol and formaldehyde) in a Swedish population, and to investigate associated simultaneous allergic reactions. METHODS Five centres representing the Swedish Contact Dermatitis Research Group included PFR-2 in their patch test baseline series for a period of 1.5 years. RESULTS Of 2504 patients tested, 27 (1.1%) reacted to PFR-2. Of those 27 individuals, 2 had a positive reaction to formaldehyde and 2 to PTBP-FR. Simultaneous allergic reactions were noted to colophonium in 6, to Myroxylon pereirae in 14, and to fragrance mix I in 15. CONCLUSIONS The contact allergy frequency in the tested population (1.1%) merits its inclusion in the Swedish baseline series and possibly also in other baseline series. Simultaneous allergic reactions were noted to colophonium, M. pereirae, and fragrance mix I.
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