In China, the current standard for cosmetic adverse reactions related skin disease (GB/T 17149.1-1997) was jointly issued by the Ministry of Health and the State Bureau of Technical Supervision in 1997, cosmetic-allergic adverse reactions include allergic contact dermatitis and photo-allergic contact dermatitis according to this standard. The increasing use and changes in cosmetic ingredients or formula lead to a significant increase for the incidence of adverse reactions as the cosmetics industry is developing rapidly in the last 20 years. In the meantime, the clinical manifestations have become more diverse. In recent years, there have been many reports on the special manifestations for cosmetic allergy and allergen test, which provide a reference for the subsequent improvement of the diagnosis and prevention.
Humans ; Patch Tests/adverse effects* ; Dermatitis, Allergic Contact/therapy* ; Cosmetics/adverse effects* ; China ; Incidence ; Allergens/adverse effects*

The present study was aimed to explore the dose-toxicity-effect relationship of Tripterygium wilfordii Hook f( TW) processed by liquorice,to establish the safe and effective therapeutic window,and further to provide scientific reference for the clinical use of TW. The toxicity and anti-inflammatory effect of six doses of raw TW and TW processed by liquorice( 0. 78,1. 56,3. 12,6. 24,12. 48,15. 60 g·kg-1) in 1-fluoro-2,4-dinitrobenzene( DNFB)-induced allergic contact dermatitis( ACD) model were mainly examined by histopathology and serum biochemistry. The liver biochemical parameters including ALT and AST,related inflammatory factors including TNF-α and IL-2,together with liver index,kidney index and the other pharmacodynamic indicators,were examined and compared. The results showed that compared with the control group,the serum levels of TNF-α and IL-2 of the model group were significantly increased( P<0. 01),which proved that the ACD model was successful. The comprehensive analysis of liver biochemical indexes,serum inflammatory factors and the other indexes showed that the safe and effective therapeutic window of TW processed by liquorice was 3. 12-12. 48 g·kg-1. The results showed the therapeutic window of TW processed by liquorice was much broader than that of raw TW. And it could provide scientific reference for the clinical rational use of TW.
Animals ; Cytokines ; blood ; Dermatitis, Allergic Contact ; drug therapy ; Drugs, Chinese Herbal ; pharmacology ; Glycyrrhiza ; chemistry ; Plant Extracts ; pharmacology ; Tripterygium ; chemistry

OBJECTIVETo investigate the therapeutic effect of mustard seed on allergic contact dermatitis (ACD) in mice and explore the mechanism.

METHODSEighteen BALB/c mice were randomly divided into normal control group, model group and mustard seed group. The mice in the normal control group and model group were fed with normal chow, and those in mustard seed group were given 5% mustard seed mixed in the chow. Three weeks later, ACD was induced on the ear using 2, 4-dinitrofluorobenzene. After 24 h, the swelling of the ear was examined, and the rats were sacrificed to collect the ear tissue ears and blood for histopathological and immunohistochemical examinations, RT-PCR and enzyme-linked immunosorbent assay.

RESULTSIn mice with ACD, feeding with mustard seeds significantly lessened the ear swelling, improved the tissue histopathology, lowered the number of infiltrating Langerhans cells, and reduced the expressions of IL-1β, TNF-α and IL-6 mRNA in the ear, but did not cause significant changes in serum levels of IL-4, IFN-γ and IL-17.

CONCLUSIONMustard seed inhibits ACD in mice possibly by suppressing the expressions of IL-1β, TNF-α and IL-6 mRNA and inhibiting Langerhans cell migration in the epidermis.

Animals ; Dermatitis, Allergic Contact ; drug therapy ; metabolism ; Dinitrofluorobenzene ; adverse effects ; Female ; Interleukin-1beta ; metabolism ; Interleukin-6 ; metabolism ; Mice ; Mice, Inbred BALB C ; Mustard Plant ; Seeds ; Tumor Necrosis Factor-alpha ; metabolism

This study is to elucidate the immunoregulation mechanisms of artesunate (AST) on allergic contact dermatitis (ACD). Pharmacodynamics analyses, HE staining, semi-quantitative RT-PCR and Western blotting were used to explore the effects of AST on the related cytokines, transcription factor and signaling molecule of ACD respectively. The results indicated that topical administration of AST not only reduced the increase of ear swelling, spleen index and inflammatory cells infiltration in ACD mice, but also inhibited remarkably the expression of IFN-gamma, T-bet and NF-kappaB p65. It's suggested that AST could exhibit suppressive effects on inflammatory response and immune function of ACD, which indicates the possibility of developing AST as a novel immunoregulatory agent in the treatment of ACD and other immune-related diseases.
Administration, Topical ; Animals ; Artemisinins ; administration & dosage ; chemistry ; pharmacology ; Dermatitis, Allergic Contact ; immunology ; metabolism ; pathology ; Ear ; pathology ; Female ; GATA3 Transcription Factor ; genetics ; metabolism ; Hypersensitivity, Delayed ; drug therapy ; Immunosuppressive Agents ; administration & dosage ; chemistry ; pharmacology ; Interferon-gamma ; genetics ; metabolism ; Interleukin-4 ; genetics ; metabolism ; Mice ; Mice, Inbred ICR ; Molecular Structure ; NF-kappa B ; metabolism ; RNA, Messenger ; metabolism ; T-Box Domain Proteins ; genetics ; metabolism

Mycosis fungoides palmaris et plantaris (MFPP) is a rare form of mycosis fungoides that is confined to the palms and soles. The clinical manifestation of MFPP is often confused with inflammatory palmoplantar dermatoses. Mycosis fungoides is usually considered as a disease of middle age, but it is rarely developed at any age. A 10-year-old girl was referred to us with a 2-year history of recalcitrant palmoplantar dermatoses. Other clinics had treated her for more than 2 years, but all medical treatments turned out to have had no effect, despite her young age. She had not had any atopic dermatitis or allergic contact dermatitis. Histopathologic findings showed inflammatory cell infiltration and lymphocytic epidermotrophism. Monoclonal TCR-rearrangement was positive, so we diagnosed her as having MFPP. We tried to treat her with topical PUVA therapy and she improved within 3 months. Herein, we report on a case of mycosis fungoides Palmaris et plantaris in a 10-year-old girl that was treated successfully with topical PUVA.
Child ; Dermatitis, Allergic Contact ; Dermatitis, Atopic ; Humans ; Middle Aged ; Mycosis Fungoides ; Organophosphorus Compounds ; PUVA Therapy ; Skin Diseases

OBJECTIVETo investigate the effect of magnesium isoglycyrrhizinate (MgIG) on allergy contact dermatitis (ACD) in mice.

METHODThe model of ACD was sensitized and challenged by 1% dinitrofluorobenzene(DNFB).48 SPF grade mice were divided into 6 groups randomly: a control group, a model group, three dosage groups and a positive group. The drug was injected through vena caudalis. The change of ear's swelling and the scores of ear's thickness and erythema of each mouse was observed. The level of INF-gamma, IgE, IL-4 in serum was detected by ELISA method. Then the pathologic change of mice ears was using HE staining examined under light microscope.

RESULTMgIG could decrease (P < 0.05) the ear's swelling, the scores of ear's thickness and erythema, and INF-gamma and IgE level in mice serum. It was observed that MgIG could significantly alleviate the infiltrate of inflam cell and the hemangiectasis in ear tissue.

CONCLUSIONCertain concentration of MgIG has significant therapeutic effect on ACD in mice. Therapeutic mechanism of MgIG may be relevant with the suppression of INF-gamma and IgE.

Animals ; Dermatitis, Allergic Contact ; drug therapy ; immunology ; Humans ; Interleukin-4 ; immunology ; Male ; Mice ; Mice, Inbred ICR ; Random Allocation ; Saponins ; administration & dosage ; Triterpenes ; administration & dosage

OBJECTIVETo evaluate the effect of panaxynol (PAN) on delayed type hypersensitivity and possible mechanism.

METHODAllergic contact dermatitis (ACD) was induced by DNCB as a delayed type hypersensitivity (DTH) model to observe effect of PAN on auricle inflammation including pathological injury. Proliferation of T lymphocytes was induced by ConA and measured by MTf method. IFN-gamma secretion of splenocyte induced by ConA was detected by ELISA.

RESULTThe swelling degree of auricle and pathological injury in ACD mice was reduced significantly by treated with PAN in induction phase. Proliferation of T lymphocytes induced by ConA in vitro was inhibited significantly by PAN, By contrast, no detectable effect was observed in resting splenocyte. IFN-y induced by ConA in splenocytes was inhibited markedly by PAN from 10 micromol x L(-1) and from 6 h.

CONCLUSIONThe results showed that DTH was inhibited by PAN mainly in induction phase and this effect may be related with the inhibition on T lymphocytes proliferation and secretion of IFN-gamma.

Animals ; Cell Proliferation ; drug effects ; Concanavalin A ; metabolism ; Dermatitis, Allergic Contact ; drug therapy ; immunology ; metabolism ; Diynes ; pharmacology ; therapeutic use ; Fatty Alcohols ; pharmacology ; therapeutic use ; Female ; Interferon-gamma ; secretion ; Male ; Mice ; Mice, Inbred ICR ; Spleen ; drug effects ; pathology ; secretion ; T-Lymphocytes ; drug effects ; pathology

Anti-Inflammatory Agents ; therapeutic use ; Betamethasone Valerate ; therapeutic use ; Child, Preschool ; Coloring Agents ; adverse effects ; toxicity ; Dermatitis, Allergic Contact ; diagnosis ; drug therapy ; etiology ; Fusidic Acid ; therapeutic use ; Histamine Antagonists ; therapeutic use ; Humans ; Male ; Parenting ; Phenylenediamines ; adverse effects ; toxicity ; Protein Synthesis Inhibitors ; therapeutic use ; Singapore ; Tattooing ; adverse effects ; Time Factors

OBJECTIVETo investigate the effect of modified Yupingfeng granule on nuclear factor-kappaB (NF-kappaB)expression in mice with allergic contact dermatitis (ACD).

METHODSMouse models of ACD were treated with the granules at low, medium and high doses, with normal saline and hydrocortisone as the negative and positive controls, respectively. The expressions of NF-kappaB and its distribution in the lesions were detected using immunohistochemistry.

RESULTSThe staining intensity, area and positive expression rates of NF-kappaB p50 were significantly different between the treatment group and the normal saline group (P<0.05).

CONCLUSIONModified Yupingfeng granule can effectively inhibit the expression of NF-kappaB in ACD, which might be a possible mechanism for its therapeutic effect on ACD.

Animals ; Dermatitis, Allergic Contact ; drug therapy ; metabolism ; Dose-Response Relationship, Drug ; Drugs, Chinese Herbal ; administration & dosage ; pharmacology ; therapeutic use ; Gene Expression Regulation ; drug effects ; Mice ; Mice, Inbred BALB C ; NF-kappa B ; metabolism

INTRODUCTIONLeg ulcers are a chronic condition affecting the older population. In Singapore, the use of topical traditional Chinese medicaments (TTCM) is common amongst those older than 65 years of age. We study the role of TTCM as contact sensitisers in patients with chronic venous leg ulcers and its impact in the clinical management of these patients.

MATERIALS AND METHODSPatients with chronic leg ulcers attending the Wound and Ulcer Clinic at the National Skin Centre (NSC) between October 2005 and April 2006 were patch-tested to the NSC TTCM series. They were also patch-tested for other allergens from the NSC Standard Series, Medicament Series, Steroid Series and wound dressings.

RESULTSA total of 44 patients were patch-tested. Seventeen of the 44 (38.7%) patients were using or had used at least 1 TTCM. Seven patients (15.9%) had at least 1 positive patch test (PT) reading to TTCM, giving a sensitisation rate of 41% (7 of 17). A significantly high proportion of the patients, 94.1% (16 of 17) with a positive history of TTCM usage had at least 1 positive PT reading compared to those without a history of TTCM usage, 45.8% (11 of 24).

CONCLUSIONTTCM play an important role as contact sensitisers in our patients with chronic venous leg ulcers and may be a significant factor in non- or poor-healing leg ulcers. In such patients, a history of TTCM usage should be sought for and patch testing should include the commonly used TTCM where relevant.

Administration, Topical ; Adult ; Aged ; Aged, 80 and over ; Chronic Disease ; Cohort Studies ; Cross-Sectional Studies ; Dermatitis, Allergic Contact ; epidemiology ; Female ; Humans ; Leg Ulcer ; drug therapy ; Male ; Medicine, Chinese Traditional ; adverse effects ; Middle Aged ; Singapore ; epidemiology ; Varicose Ulcer ; drug therapy