Abstract:
BACKGROUND:Photocontact dermatitis to Ficus carica is induced by furocoumarins present in sap. These substances are generally considered to cause phototoxic reactions. OBJECTIVES:We conducted a patch test and histopathological study of patients with phytophoto contact dermatitis from the fig tree to evaluate the mechanism underlying the photoreaction. PATIENTS AND METHODS:Patch and photopatch testing with serial dilutions of two natural furocoumarins [5-methoxypsoralen and 8-methoxypsoralen (8-MOP)] contained in plant sap were performed in 47 patients. A synthetic furocoumarin, 4,5',8-trimethylpsoralen, was also tested. Histopathological analyses were made of some positive photoreactions. RESULTS:Positive photopatch tests reactions to 8-MOP were obtained in 12 of 47 patients, in 4 of them down to a concentration of 0.0001%. Patch tests and photopatch tests to the other two furocoumarins were negative. Histopathological findings on biopsies from positive photopatch tests to 8-MOP showed a dermatitis. CONCLUSIONS:Allergic photoreactions induced by contact with plants containing coumarins are generally regarded as chance findings. This study has demonstrated that phytophoto allergic contact dermatitis resulting from furocoumarins is not an exceptional finding, and should be suspected in subjects with diffuse clinical manifestations in photo-exposed but also non-exposed sites. To differentiate allergic from toxic photoreactions, patch tests need to be performed with serial dilutions of furocoumarins. Histological analysis of a biopsy sample from a positive test site will reveal alterations compatible with a photoallergic contact dermatitis.
journal_name
Contact Dermatitisjournal_title
Contact dermatitisauthors
Bonamonte D,Foti C,Lionetti N,Rigano L,Angelini Gdoi
10.1111/j.1600-0536.2010.01713.xsubject
Has Abstractpub_date
2010-06-01 00:00:00pages
343-8issue
6eissn
0105-1873issn
1600-0536pii
COD1713journal_volume
62pub_type
杂志文章abstract::Contact urticaria to potato was confirmed by skin testing in a 26-year-old male with atopic dermatitis, birch-pollen rhinoconjunctivitis and a history of immediate finger itching upon handling raw potato. The potato peel was non-reactive. The urticarial reactivity to potato could be transferred by the patient's serum ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1983.tb04315.x
更新日期:1983-03-01 00:00:00
abstract::Data on 134 consecutive nickel-sensitive subjects attending our contact dermatitis clinic were analysed. The female to male ratio was 8 to 1, with a mean age at presentation of 35 years for women and 53 years for men. Hand dermatitis occurred in 49% of patients and in 70% of men. It was usually preceeded by jewellery ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1986.tb01198.x
更新日期:1986-03-01 00:00:00
abstract:BACKGROUND:Patch tests help to confirm the aetiology of the cutaneous adverse drug reactions involving delayed hypersensitivity mechanisms, but the results vary with the pattern of skin reaction and the culprit drug. OBJECTIVES:To analyse the results of patch tests in patients with cutaneous adverse drug reactions imp...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.2011.01942.x
更新日期:2011-10-01 00:00:00
abstract::46 yellow and white petrolatums were screened for their skin sensitizing properties in 3 subjects with known histories of contact sensitivity to yellow petrolatum. Patch testing revealed that all the petrolatums examined contain sensitizing substances in varying amounts. The results were analyzed with regard to origin...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1983.tb04354.x
更新日期:1983-05-01 00:00:00
abstract::Skin compatibility of anionic surfactants may often but not always be predicted by in vitro tests. For instance, the correlation between in vivo and in vitro data is classically hampered in the presence of magnesium. This ion is known to interfere with in vitro skin irritation predictive tests based on protein denatur...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1995.tb00445.x
更新日期:1995-07-01 00:00:00
abstract::A chemical operator handling dimethyl acetylenedicarboxylate (DMAD) developed delayed and pain-free burns on one of his feet 2 days after a supposed spillage of DMAD. The injuries were confirmed to be associated with DMAD by chemical analysis of the operator's safety boot and patch tests. DMAD easily penetrates some p...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1984.tb00166.x
更新日期:1984-07-01 00:00:00
abstract::Murine models for the assessment of the contact sensitizing properties of chemicals rely on mouse ear swelling tests (Mest), which are not sensitive enough to detect weak sensitizers. The aim of the present study was to develop in mice an adjuvant-free Mest appropriate for in vivo detection of any type of sensitizer (...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1994.tb00650.x
更新日期:1994-04-01 00:00:00
abstract::Patch testing, using European standard allergens and suspected causative substances brought in by patients, was carried out in 490 patients with eczema in Hong Kong and 437 completed the test. Before patch testing, 244, 141 and 105 patients were diagnosed as having contact dermatitis, endogenous eczema and unclassifie...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1996.tb02261.x
更新日期:1996-07-01 00:00:00
abstract::In this study, 333 nurses, 92 dentists and 167 doctors were investigated. Most positive patch tests obtained were unrelated to occupation. Nurses were most often sensitized to penicillins and, of the disinfectants, formaldehyde was the commonest cause of occupational dermatitis. Among dentists, the most common occupat...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1989.tb03140.x
更新日期:1989-04-01 00:00:00
abstract:BACKGROUND:Contact allergy to cocamidopropyl betaine has been attributed to its impurities dimethylaminopropylamine and cocamidopropyl dimethylamine. OBJECTIVES:To describe patients with positive patch test reactions to cocamidopropyl betaine-related compounds in an occupational dermatology clinic. METHODS:We reviewe...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.2011.02036.x
更新日期:2012-05-01 00:00:00
abstract::A case of contact sensitivity to ethylenediamine dihydrochloride is reported. The clinical and histological features were in keeping with early mycosis fungoides. The eruption cleared with avoidance of the allergen. Continued contact with the allergen was traced to its retention in a trouser pocket lining. The term "l...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1982.tb04135.x
更新日期:1982-01-01 00:00:00
abstract::The authors followed the frequency of fragrance contact sensitization in Hungary in a multicentre study in the years 1998 and 1999. A total of 3,604 patients were tested with fragrance mix (FM), and positive reactions were observed in 294 (8.2%). In 160 FM hypersensitive patients, the study was continued with patch te...
journal_title:Contact dermatitis
pub_type: 杂志文章,多中心研究
doi:10.1034/j.1600-0536.2002.460602.x
更新日期:2002-06-01 00:00:00
abstract::A 45-year-old woman developed dermatitis of the face after she applied a cosmetic package comprising day and night creams. Patch tests were performed with the British Contact Dermatitis Society (BCDS) standard, bases + preservatives, and cosmetic series in addition to samples of both creams and the individual constitu...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.2007.00972.x
更新日期:2007-04-01 00:00:00
abstract::A human 4-h patch test has recently been developed for testing the irritation hazard potential of chemicals. The original method was developed for comparative irritation assessments relative to benchmark irritants using simple statistical tests. In this context, the method has been shown to be robust in intralaborator...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1998.tb05706.x
更新日期:1998-04-01 00:00:00
abstract::Protein kinase C (PKC) isoforms are important in cell signal transduction associated with regulation of cell proliferation and differentiation. In this study, alterations of PKC isoform levels in irritant patch test reactions were detected by Western immunoblots. 4 chemically and structurally different irritants, 4% a...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1998.tb05766.x
更新日期:1998-06-01 00:00:00
abstract:BACKGROUND:Occlusion of the skin is a risk factor for development of irritant contact dermatitis. Occlusion may, however, have a positive effect on skin healing. No consensus on the effect of occlusion has been reached. OBJECTIVES:To investigate skin barrier response to occlusion on intact and damaged skin. METHODS:I...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.2010.01773.x
更新日期:2010-12-01 00:00:00
abstract::Adverse cutaneous reactions to topically applied olive oil are seldom reported, and positive patch tests to it are mostly regarded as allergic. To evaluate such "positive" patch test reactions, 77 female (mean age: 44 years) and 23 male eczema patients (mean age: 46 years) were prospectively patch tested with freshly ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1997.tb00914.x
更新日期:1997-01-01 00:00:00
abstract::The frequency of positive patch tests to 13 rubber accelerators in Poland was recorded. Of particular interest was the relatively large group of patients positive to several, mostly chemically unrelated, accelerators. The mechanism of this multiple sensitivity is discussed. Positive tests to N-isopropyl-N-phenyl-p-phe...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1976.tb02974.x
更新日期:1976-02-01 00:00:00
abstract::The purpose of the present study was to compare the frequency of lanolin allergy during two periods and to assess the adequacy of testing with one standard allergen. Among 1230 consecutive patients with eczema who were standard patch tested, 33 (2.7%), 21 females and 12 males, gave a positive reaction to wool alcohols...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1979.tb04824.x
更新日期:1979-05-01 00:00:00
abstract::The epidermal response to 2 different irritants, nonanoic acid (NAA) and sodium lauryl sulfate (SLS), was investigated with 2 different methods. NAA 80% and SLS 4% were applied under occlusion for up to 24 h. Elemental changes were determined in cryosections by x-ray microanalysis. Compared to unexposed skin a signifi...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1996.tb02416.x
更新日期:1996-12-01 00:00:00
abstract::Prevention of NiSO4 induced allergic contact dermatitis (ACD) using ZnSO4 in drinking water was studied in a guinea pig model. Without ZnSO4 interventions, nickel (Ni)-exposure resulted in significantly higher (p less than 0.05) stimulation indices (SIs) as compared to non-exposed controls, using NiSO4 as an allergen ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1988.tb05505.x
更新日期:1988-08-01 00:00:00
abstract:BACKGROUND:Cosensitization to nickel, cobalt and chromium occurs in the general population and in some occupational groups. OBJECTIVES:To estimate the isolated and concurrent occurrence of nickel, cobalt and chromium contact sensitization and their association with individual and occupational risk factors. PATIENTS/M...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.2012.02100.x
更新日期:2012-12-01 00:00:00
abstract::During the 2-year period 1976--1977, seven patients were studied with primary irritant dermatitis from topical preparations containing clioquinol. During the same period contact hypersensitivity to the compound was recorded in 35 eczema patients. Six of the seven patients with clioquinol irritancy had used creams cont...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1979.tb04810.x
更新日期:1979-03-01 00:00:00
abstract::Exposure to formaldehyde is common from both consumer products and industry. The reliability of the patch test is essential for the diagnosis of formaldehyde allergy as it is difficult to suspect from the patient's history. The recommended formaldehyde patch test concentration has been reduced over the last decades fr...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1998.tb05630.x
更新日期:1998-01-01 00:00:00
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 ...
journal_title:Contact dermatitis
pub_type: 杂志文章,多中心研究
doi:10.1111/j.1600-0536.2011.01921.x
更新日期:2011-07-01 00:00:00
abstract::Patch-test technique for budesonide needs improvement. 20 subjects with positive or questionable patch-test responses to budesonide were retested for 3 to 96 h (4 days [D]) with polyester patches coated with budesonide in serial doses (150 to 0.074 microg/cm2). Multiple readings were taken visually and with a laser Do...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1999.tb06132.x
更新日期:1999-10-01 00:00:00
abstract::In some patients with atopic dermatitis (AD), delayed-type allergy to aeroallergens, such as house dust mite, can be demonstrated by patch testing. Positive patch tests can be expected only in patients with AD and, in them, only to aeroallergens to which type 1 reactions have also been demonstrated. In an as yet unkno...
journal_title:Contact dermatitis
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0536.1989.tb03197.x
更新日期:1989-10-01 00:00:00
abstract::Several acetogenins, characteristic of the Annonaceae, have been found to exhibit pesticidal and feeding-deterrent activities against a variety of pests and are undergoing commercial development as pesticides. The sensitizing potential of one of these plants, pawpaw, Asimina triloba Dunal, was examined in the current ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1993.tb04533.x
更新日期:1993-07-01 00:00:00
abstract::Repeated open application tests (ROATs) were performed with common ingredients of vehicles in 86 patients with contact dermatitis. The substances were applied twice daily for 7 days to the flexor aspect of the forearm near the cubital fossa, unless dermatitis appeared earlier. Of the patients with a questionable (?+) ...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1986.tb01229.x
更新日期:1986-04-01 00:00:00
abstract::Thirty-six of 37 veterinary surgeons with incapacitating dermatitis had allergic contact dermatitis, mainly from antibiotics such as spiramycin, Penethamate BP and tylosin. Eight were sensitive to rubber materials. Twenty of 36 had positive prick or scratch tests, mainly to animal hair. The atopic sensitivities were r...
journal_title:Contact dermatitis
pub_type: 杂志文章
doi:10.1111/j.1600-0536.1980.tb03885.x
更新日期:1980-01-01 00:00:00