5,600 results match your criteria Protein Contact Dermatitis


Phloretin alleviates dinitrochlorobenzene-induced dermatitis in BALB/c mice.

Int J Immunopathol Pharmacol 2020 Jan-Dec;34:2058738420929442

Department of Life Sciences, Institute of Biomedical Sciences, The iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung.

Atopic dermatitis (AD) is a chronic inflammatory disease of the skin that substantially affects a patient's quality of life. While steroids are the most common therapy used to temporally alleviate the symptoms of AD, effective and nontoxic alternatives are urgently needed. In this study, we utilized a natural, plant-derived phenolic compound, phloretin, to treat allergic contact dermatitis (ACD) on the dorsal skin of mice. Read More

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http://dx.doi.org/10.1177/2058738420929442DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7313336PMC

The Effects of Fabric Containing Chamaecyparis obtusa Essential Oil on Atopic Dermatitis-Like Lesions: A Functional Clothing Possibility.

Skin Pharmacol Physiol 2020 Jun 12:1-11. Epub 2020 Jun 12.

Department of Dermatology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea,

Background: Essential oil derived from Chamaecyparis obtusa (EOCO) has been used as an alternative treatment for allergy-related diseases due to its immune-modulating characteristics. Clothing has the longest and most intense contact with human skin, and functional fabrics with intrinsic properties have been increasingly implemented in medical applications. Specially designed fabrics may support atopic dermatitis (AD) treatment. Read More

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http://dx.doi.org/10.1159/000507941DOI Listing

Modified plasma cytokine profile in occupational dermatitis.

Endocr Metab Immune Disord Drug Targets 2020 Jun 7. Epub 2020 Jun 7.

Stefan S. Nicolau Institute of Virology, Bucharest. Romania.

Background: Despite significant progress in the diagnosis of contact dermatitis, the identification of specific tests or biomarkers remains an unsolved issue, particularly when needed for the confirmation of the occupational origin of the disease.

Objective: To characterize the plasma proteome profile in occupational dermatitis in workers from paint industry.

Methods: The study has a case-control design, comparing exposed workers with and without occupational contact dermatitis, matched for age, gender, occupational history and comorbidities. Read More

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http://dx.doi.org/10.2174/1871530320666200607194021DOI Listing

Dendritic Epidermal T Cells in Allergic Contact Dermatitis.

Front Immunol 2020 19;11:874. Epub 2020 May 19.

The LEO Foundation Skin Immunology Research Center, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.

Allergic contact dermatitis (ACD) is a common inflammatory skin disease with a prevalence of approximately 20% in the European population. ACD is caused by contact allergens that are reactive chemicals able to modify non-immunogenic self-proteins to become immunogenic proteins. The most frequent contact allergens are metals, fragrances, and preservatives. Read More

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http://dx.doi.org/10.3389/fimmu.2020.00874DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248261PMC

Allergic Contact Sensitization in Healthy Skin Differs from Sensitization in Chronic Dermatitis: Atopic, Occupational Wet Work, and Stasis Dermatitis.

Authors:
Susan T Nedorost

Dermatol Clin 2020 Jul 17;38(3):301-308. Epub 2020 Apr 17.

University Hospitals Cleveland Medical Center, Case Western Reserve University, 11100 Euclid Avenue, Lakeside Suite 6223, Cleveland, OH 44106, USA. Electronic address:

The duration of cutaneous inflammation preceding sensitization influences the resulting allergic response; the innate immune system instructs the adaptive immune response. Potent allergens that function as their own irritant cause classic T helper cell type 1 skewed dermatitis. Examples include poison ivy, epoxy resin, and methylchloroisothiazolinone. Read More

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http://dx.doi.org/10.1016/j.det.2020.02.006DOI Listing

Review on perfume and present status of its associated allergens.

J Cosmet Dermatol 2020 May 23. Epub 2020 May 23.

Department of Pharmaceutical Sciences & Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda, India.

Background: Perfume is basically a cosmetic product applied to human body for an amusing scent or the feeling of freshness. A certain amount of perfume penetrates and remains attached to the protein of the skin when perfume is applied on the body. It evokes a surge of events in human immune system which results with allergic symptoms. Read More

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http://dx.doi.org/10.1111/jocd.13507DOI Listing

Eosinophil cationic protein is a potential surrogate marker of allergic contact dermatitis: A single-center, retrospective study of 216 patients.

J Am Acad Dermatol 2020 May 19. Epub 2020 May 19.

Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea; Institute of Allergy, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea. Electronic address:

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http://dx.doi.org/10.1016/j.jaad.2020.05.070DOI Listing

Hyperkeratotic hand eczema: Eczema or not?

Contact Dermatitis 2020 Apr 25. Epub 2020 Apr 25.

Department of Dermatology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

Background: Hyperkeratotic hand eczema (HHE) is a typical clinical hand eczema subtype with a largely unknown pathophysiology.

Objective: To investigate histopathology, expression of keratins (K), epidermal barrier proteins, and adhesion molecules in HHE.

Methods: Palmar skin biopsies (lesional and perilesional) were obtained from seven HHE patients and two healthy controls. Read More

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http://dx.doi.org/10.1111/cod.13572DOI Listing

Crude Methanol Extract of Rosin Gum Exhibits Specific Cytotoxicity against Human Breast Cancer Cells via Apoptosis Induction.

Anticancer Agents Med Chem 2020 Apr 22. Epub 2020 Apr 22.

Biochemistry Department, Cairo University Research Park (CURP), Cairo University, Giza 12613. Egypt.

Background: Rosin (Colophony) is a natural resin derived from species of the pine family Pinaceae. It has wide industrial applications including printing inks, photocopying paper, adhesives and varnishes, soap and soda. Rosin and its derivatives are employed as ingredients in various pharmaceutical products such as ointments and plasters. Read More

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http://dx.doi.org/10.2174/1871520620666200423074826DOI Listing
April 2020
2.469 Impact Factor

Natural ingredients in cosmetic products-A suggestion for a screening series for skin allergy.

Contact Dermatitis 2020 Apr 5. Epub 2020 Apr 5.

Allergy Clinic, Department of Dermatology and Allergy, Copenhagen University Hospital Herlev-Gentofte, Hellerup, Denmark.

Background: Naturally derived cosmetic product ingredients of both plant and animal origin are being included increasingly in product formulations in order to cater to consumer preferences. They may be an overlooked cause of reactions to cosmetic products in some patients with dermatitis.

Objectives: To identify naturally derived cosmetic product ingredients with allergenic potential (type I and type IV) and propose a cosmetic screening test series. Read More

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http://dx.doi.org/10.1111/cod.13550DOI Listing

Contact urticaria and protein contact dermatitis in the Finnish Register of Occupational Diseases in a period of 12 years.

Contact Dermatitis 2020 Jul 29;83(1):1-7. Epub 2020 Apr 29.

Finnish Institute of Occupational Health, Occupational Health Unit, Helsinki, Finland.

Background: Although occupational contact urticaria (CU) and protein contact dermatitis (PCD) are considered frequent among workers with exposure to proteinaceous materials, data on occupations at risk and the main causes of these occupational skin diseases are relatively limited.

Objectives: To report the causative agents and risk occupations for CU and PCD in the Finnish Register of Occupational Diseases (FROD).

Methods: We retrieved from the FROD all recognized cases of CU/PCD in the years 2005-2016. Read More

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http://dx.doi.org/10.1111/cod.13547DOI Listing

Neurokinin-1 Receptor Signaling Is Required for Efficient Ca Flux in T-Cell-Receptor-Activated T Cells.

Cell Rep 2020 Mar;30(10):3448-3465.e8

Department of Immunology, University of Pittsburgh, School of Medicine Pittsburgh, PA, USA; Department of Dermatology, University of Pittsburgh, School of Medicine, Pittsburgh, PA, USA; The McGowan Center for Regenerative Medicine, Pittsburgh, PA, USA. Electronic address:

Efficient Ca flux induced during cognate T cell activation requires signaling the T cell receptor (TCR) and unidentified G-protein-coupled receptors (GPCRs). T cells express the neurokinin-1 receptor (NK1R), a GPCR that mediates Ca flux in excitable and non-excitable cells. However, the role of the NK1R in TCR signaling remains unknown. Read More

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http://dx.doi.org/10.1016/j.celrep.2020.02.054DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7169378PMC

17(),18()-epoxyeicosatetraenoic acid generated by cytochrome P450 BM-3 from inhibits the development of contact hypersensitivity via G-protein-coupled receptor 40-mediated neutrophil suppression.

FASEB Bioadv 2020 Jan 24;2(1):59-71. Epub 2019 Dec 24.

Laboratory of Vaccine Materials Center for Vaccine and Adjuvant Research Laboratory of Gut Environmental System National Institutes of Biomedical Innovation Health and Nutrition (NIBIOHN) Osaka Japan.

Dietary intake of ω3 polyunsaturated fatty acids such as eicosapentaenoic acid and docosahexaenoic acid is beneficial for health control. We recently identified 17,18-epoxyeicosatetraenoic acid (17,18-EpETE) as a lipid metabolite endogenously generated from eicosapentaenoic acid that exhibits potent anti-allergic and anti-inflammatory properties. However, chemically synthesized 17,18-EpETE is enantiomeric due to its epoxy group-17(),18()-EpETE and 17(),18()-EpETE. Read More

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http://dx.doi.org/10.1096/fba.2019-00061DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6996328PMC
January 2020

Modulation of NR1 receptor by CaMKIIα plays an important role in chronic itch development in mice.

Brain Res Bull 2020 May 26;158:66-76. Epub 2020 Feb 26.

Department of Pain Management, The State Key Clinical Specialty in Pain Medicine, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510260, P.R. China. Electronic address:

Intractable scratching is the characteristic of chronic itch, which represents a great challenge in clinical practice. However, the mechanism underlying chronic itch development is largely unknown. In the present study, we investigated the role of NMDA receptor in acute itch and in development of chronic itch. Read More

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http://dx.doi.org/10.1016/j.brainresbull.2020.02.011DOI Listing

Proinflammatory and regulatory mechanisms in allergic contact dermatitis caused by methylchloroisothiazolinone and methylisothiazolinone.

Exp Dermatol 2020 May 15;29(5):490-498. Epub 2020 Apr 15.

Laboratory of Dermatology and Immunodeficiencies, LIM-56, Department of Dermatology, University of São Paulo Medical School, São Paulo, Brazil.

Background: Methylchloroisothiazolinone (MCI) and methylisothiazolinone (MI) are the cause of an increasing number of contact allergies. Understanding the mechanisms by which MCI/MI induces proinflammatory and regulatory factors production is necessary to understand the outcome of allergic contact dermatitis (ACD).

Objectives: To evaluate the dysfunction of proinflammatory cytokines and regulatory factors in the positive MCI/MI patch test at the transcriptional and protein expression levels. Read More

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http://dx.doi.org/10.1111/exd.14086DOI Listing

Unbearable wearables.

Dermatol Online J 2019 Dec 15;25(12). Epub 2019 Dec 15.

Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.

As wearable devices play an increasing role in the management of health and disease, adverse skin reactions to wearables have become more common. However, the management of allergic contact dermatitis is challenging and new treatment options more compatible with wearable devices are needed. In a 40-year-old woman with contact dermatitis to a continuous glucose monitoring device, topical clobetasol propionate 0. Read More

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December 2019

Dupilumab for bullous pemphigoid with intractable pruritus.

Dermatol Online J 2019 Nov 15;25(11). Epub 2019 Nov 15.

Department of Dermatology, University of California San Diego, San Diego, CA.

Bullous pemphigoid (BP) is an autoimmune blistering disorder that predominantly affects the elderly. Treatment regimens typically include topical and systemic immunosuppressive medications. Although effective, systemic corticosteroids are sometimes poorly tolerated in the elderly patient, contributing to the overall morbidity and mortality of BP. Read More

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November 2019

Imiquimod-related dermatitis is mainly mediated by mast cell degranulation via Mas-related G-protein coupled receptor B2.

Int Immunopharmacol 2020 Apr 7;81:106258. Epub 2020 Feb 7.

Department of Dermatology, Northwest Hospital, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China. Electronic address:

While imiquimod (IMQ) has been widely used in dermatology, its side effect manifested as dermatitis couldn't be ignored. However, the underlying mechanism has not been fully understood. Considering the clinical features of IMQ-related dermatitis similar to pseudo-allergic reaction and the presence of large numbers of mast cell in tissues treated with IMQ, the possibility that IMQ-related dermatitis mediated by mast cell-specific Mas-related G protein-coupled receptor X2 (MRGPRX2) should be addressed. Read More

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http://dx.doi.org/10.1016/j.intimp.2020.106258DOI Listing
April 2020
2.472 Impact Factor

12-year data on dermatologic cases in the Finnish Register of Occupational Diseases I: Distribution of different diagnoses and main causes of allergic contact dermatitis.

Contact Dermatitis 2020 Jun 26;82(6):337-342. Epub 2020 Feb 26.

Occupational Health Unit, Finnish Institute of Occupational Health (FIOH), Helsinki, Finland.

Background: Skin diseases are among the most common occupational diseases, but detailed analyses on their epidemiology, diagnoses, and causes are relatively scarce.

Objectives: To analyze data on skin disease in the Finnish Register of Occupational Diseases (FROD) for (1) different diagnoses and (2) main causes of allergic contact dermatitis (ACD).

Methods: We retrieved data on recognized cases with occupational skin disease (OSD) in the FROD from a 12-year-period 2005-2016 and used national official labor force data of the year 2012. Read More

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http://dx.doi.org/10.1111/cod.13488DOI Listing

Skin bioengineering in the diagnosis of occupational protein contact dermatitis.

Occup Med (Lond) 2020 Jun;70(4):282-285

Regional Centre for Asthma, Allergy and Hypersensitivity, Department of Respiratory Medicine, Oslo University Hospital, Oslo, Norway.

Protein contact dermatitis (PCD) often presents as chronic hand eczema (CHE) with an immediate hypersensitivity to protein proved by a positive skin prick test or by the presence of specific immunoglobulin E. This is frequently induced by occupational exposure to proteins in food workers, farmers, animal breeders, veterinarians and healthcare professionals. While skin barrier impairment is crucial in the pathogenesis of PCD, methods to assess skin barrier function such as trans-epidermal water loss and stratum corneum hydration are not widely used in clinical settings. Read More

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http://dx.doi.org/10.1093/occmed/kqaa005DOI Listing

An integrated transcriptomic- and proteomic-based approach to evaluate the human skin sensitization potential of glyphosate and its commercial agrochemical formulations.

J Proteomics 2020 Apr 30;217:103647. Epub 2020 Jan 30.

Department of Immunotechnology, Lund University, Medicon Village, Lund, Sweden. Electronic address:

We investigated the skin sensitization hazard of glyphosate, the surfactant polyethylated tallow amine (POEA) and two commercial glyphosate-containing formulations using different omics-technologies based on a human dendritic cell (DC)-like cell line. First, the GARD™skin assay, investigating changes in the expression of 200 transcripts upon cell exposure to xenobiotics, was used for skin sensitization prediction. POEA and the formulations were classified as skin sensitizers while glyphosate alone was classified as a non-sensitizer. Read More

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http://dx.doi.org/10.1016/j.jprot.2020.103647DOI Listing

Anti-melanogenic effects of extracellular vesicles derived from plant leaves and stems in mouse melanoma cells and human healthy skin.

J Extracell Vesicles 2020 18;9(1):1703480. Epub 2019 Dec 18.

Department of Integrative Biosciences, University of Brain Education, Cheonan, Republic of Korea.

Consumer interest in cosmetic industry products that produce whitening effects has increased demand for agents that decrease melanin production. Many such anti-melanogenic agents are associated with side effects, such as contact dermatitis and high toxicity, and also exhibit poor skin penetration. Considerable recent research has focused on plant-derived products as alternatives to chemotherapeutic agents that possess fewer side effects. Read More

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http://dx.doi.org/10.1080/20013078.2019.1703480DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6968621PMC
December 2019

Mechanism and diagnosis of protein contact dermatitis.

Authors:
Annick Barbaud

Curr Opin Allergy Clin Immunol 2020 Apr;20(2):117-121

Sorbonne Université, INSERM, Institut Pierre Louis d'Epidemiologie et de Sante Publique, AP-HP. Sorbonne Universite, Tenon Hospital, Department of Dermatology and Allergology, Paris, France.

Purpose Of Review: Protein contact dermatitis (PCD) is a chronic eczema because of immediate hypersensitivity to protein and not related to haptens. As it has to be diagnosed by prick tests, it is probably under-recorded and under-estimated that is why it is important for dermatologists, allergists and occupational physicians to better know this peculiar contact dermatitis.

Recent Findings: Some recent series have emphasized that PCD is mainly an occupational dermatosis, mainly observed in food handlers. Read More

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http://dx.doi.org/10.1097/ACI.0000000000000621DOI Listing

Mechanistic understanding of dendritic cell activation in skin sensitization: additional evidences to support potency classification.

Toxicol Lett 2020 Apr 17;322:50-57. Epub 2020 Jan 17.

Laboratory of Toxicology, Department of Environmental and Political Sciences, Università degli Studi di Milano, Via Balzaretti 9, 20133, Milan, Italy.

Allergic contact dermatitis (ACD) is an important occupational and environmental disease caused by topical exposure to chemical allergens. In the EU, it has been calculated that 4 % of animals are used in toxicity test for the assessment of skin sensitization (Peiser et al., 2012). Read More

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http://dx.doi.org/10.1016/j.toxlet.2020.01.014DOI Listing

Cannabinoid Receptor 2 Modulates Maturation of Dendritic Cells and Their Capacity to Induce Hapten-Induced Contact Hypersensitivity.

Int J Mol Sci 2020 Jan 11;21(2). Epub 2020 Jan 11.

Department of Psychiatry, University of Münster, 48149 Münster, Germany.

Contact hypersensitivity (CHS) is an established animal model for allergic contact dermatitis. Dendritic cells (DCs) play an important role in the sensitization phase of CHS by initiating T cell responses to topically applied haptens. The cannabinoid receptors 1 (CB1) and 2 (CB2) modulate DC functions and inflammatory skin responses, but their influence on the capacity of haptenized DCs to induce CHS is still unknown. Read More

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http://dx.doi.org/10.3390/ijms21020475DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7013892PMC
January 2020

Art of prevention: The importance of feeding traditions.

Int J Womens Dermatol 2019 Dec 3;5(5):378-380. Epub 2019 Apr 3.

Department of Dermatology, Loma Linda University, Loma Linda, California.

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http://dx.doi.org/10.1016/j.ijwd.2019.03.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6938930PMC
December 2019

Metformin Suppresses LPS-Induced Inflammatory Responses in Macrophage and Ameliorates Allergic Contact Dermatitis in Mice via Autophagy.

Biol Pharm Bull 2020 ;43(1):129-137

Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine.

Allergic contact dermatitis (ACD) is one of the most common skin diseases caused by hapten-modified proteins. Metformin, a drug commonly prescribed for type II diabetes, has been demonstrated to have various biological functions beyond its antidiabetic effects. However, its role in ACD remains unknown. Read More

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http://dx.doi.org/10.1248/bpb.b19-00689DOI Listing
January 2020

The Overt and Hidden Use of Animal-Derived Products in Alternative Methods for Skin Sensitisation: A Systematic Review.

Altern Lab Anim 2019 Nov-Dec;47(5-6):174-195. Epub 2020 Jan 4.

Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.

methods that can replace animal testing in the identification of skin sensitisers are now a reality. However, as cell culture and related techniques usually rely on animal-derived products, these methods may be failing to address the complete replacement of animals in safety assessment. The objective of this study was to identify the animal-derived products that are used as part of methods for skin sensitisation testing. Read More

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http://dx.doi.org/10.1177/0261192919896361DOI Listing

Human T cell response to CD1a and contact dermatitis allergens in botanical extracts and commercial skin care products.

Sci Immunol 2020 01 3;5(43). Epub 2020 Jan 3.

Columbia University Vagelos College of Physicians and Surgeons, Department of Dermatology, New York, NY 10032, USA.

During industrialization, humans have been exposed to increasing numbers of foreign chemicals. Failure of the immune system to tolerate drugs, cosmetics, and other skin products causes allergic contact dermatitis, a T cell-mediated disease with rising prevalence. Models of αβ T cell response emphasize T cell receptor (TCR) contact with peptide-MHC complexes, but this model cannot readily explain activation by most contact dermatitis allergens, which are nonpeptidic molecules. Read More

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http://dx.doi.org/10.1126/sciimmunol.aax5430DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7247771PMC
January 2020

Nickel toxicology with reference to male molecular reproductive physiology.

Reprod Biol 2020 Mar 28;20(1):3-8. Epub 2019 Dec 28.

Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India. Electronic address:

The toxicity of metals is a known phenomenon. Nickel toxicity is very common since nickel is used extensively both industrially and in items of personal use such as utensils and jewellery. Here we discuss human exposure to nickel and its toxicity in the light of the available scientific evidence to understand its underlying pathophysiology. Read More

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http://dx.doi.org/10.1016/j.repbio.2019.11.005DOI Listing
March 2020
1.524 Impact Factor

SBF-1 inhibits contact hypersensitivity in mice through down-regulation of T-cell-mediated responses.

BMC Pharmacol Toxicol 2019 12 21;20(1):86. Epub 2019 Dec 21.

State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, 163 Xianlin Avenue, Nanjing, 210023, China.

Background: T lymphocytes play an important role in contact hypersensitivity. This study aims to explore the immunosuppressive activity of SBF-1, an analog of saponin OSW-1, against T lymphocytes in vitro and in vivo.

Methods: Proliferation of T lymphocytes from lymph nodes of mice was determined by MTT assay. Read More

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http://dx.doi.org/10.1186/s40360-019-0377-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6925477PMC
December 2019

Atopy patch tests may identify patients at risk for systemic contact dermatitis.

Immun Inflamm Dis 2020 03 11;8(1):24-29. Epub 2019 Dec 11.

Department of Dermatology, University Hospitals Cleveland Medical Center, Case Western Reserve University, Cleveland, Ohio.

Background: A subset of patients with positive patch tests demonstrates systemic contact dermatitis (SCD) upon ingestion or inhalation of the allergen. Concern has been raised about the use of patch tests for protein allergens (APTs) to detect SCD in atopic dermatitis (AD) patients.

Methods: We present atopy patch test (APT) data for 97 people. Read More

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http://dx.doi.org/10.1002/iid3.280DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7016841PMC

Xanthone suppresses allergic contact dermatitis in vitro and in vivo.

Int Immunopharmacol 2020 Jan 9;78:106061. Epub 2019 Dec 9.

Department of Oriental Medicine Resources, Chonbuk National University, 79 Gobong-ro, Iksan, Jeollabuk-do 54596, Republic of Korea. Electronic address:

Xanthone is a phenolic compound found in a few higher plant families; it has a variety of biological activities, including antioxidant, anti-inflammatory, and anticancer properties. However, the molecular and cellular mechanisms underlying the activity of xanthone in allergic contact dermatitis (ACD) remain to be explored. Therefore, this study aimed to investigate the regulatory effects of xanthone in ACD in human keratinocytes (HaCaT cell), and human mast cell line (HMC-1 cell) in vitro and in an experimental murine model. Read More

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http://dx.doi.org/10.1016/j.intimp.2019.106061DOI Listing
January 2020
9 Reads

Sensitization of spinal itch transmission neurons in a mouse model of chronic itch requires an astrocytic factor.

J Allergy Clin Immunol 2020 Jan 28;145(1):183-191.e10. Epub 2019 Nov 28.

Department of Life Innovation, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan. Electronic address:

Background: Chronic itch is a highly debilitating symptom among patients with inflammatory skin diseases. Recent studies have revealed that gastrin-releasing peptide (GRP) and its receptor (gastrin-releasing peptide receptor [GRPR]) in the spinal dorsal horn (SDH) play a central role in itch transmission.

Objective: We aimed to investigate whether GRP-GRPR signaling is altered in SDH neurons in a mouse model of chronic itch and to determine the potential mechanisms underlying these alterations. Read More

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http://dx.doi.org/10.1016/j.jaci.2019.09.034DOI Listing
January 2020

Skin barrier damage after exposure to paraphenylenediamine.

J Allergy Clin Immunol 2020 Feb 26;145(2):619-631.e2. Epub 2019 Nov 26.

Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, and the Christine Kühne-Center for Allergy Research and Education (CK-CARE), Davos, Switzerland. Electronic address:

Background: p-Phenylenediamine (PPD) is a strong contact allergen used in hair dye that is known to cause allergic contact dermatitis (ACD). Both private and occupational exposure to PPD is frequent, but the effect of PPD exposure in nonallergic occupationally exposed subjects is unknown.

Objective: We sought to investigate the effects of PPD exposure on the skin of occupationally exposed subjects with and without clinical symptoms. Read More

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http://dx.doi.org/10.1016/j.jaci.2019.11.023DOI Listing
February 2020

Filaggrin gene mutations in relation to contact allergy and hand eczema in adolescence.

Contact Dermatitis 2020 Mar 22;82(3):147-152. Epub 2019 Dec 22.

Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.

Background: Filaggrin is an important protein for structure and function of the skin barrier. Filaggrin gene (FLG) mutations are known to result in dry skin, impaired skin barrier, and increased risk for atopic dermatitis. However, it is not clear whether these mutations are associated with contact allergy or hand eczema in adolescence. Read More

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http://dx.doi.org/10.1111/cod.13444DOI Listing

IL-6 Negatively Regulates IL-22R Expression on Epidermal Keratinocytes: Implications for Irritant Contact Dermatitis.

J Immunol Res 2019 29;2019:6276254. Epub 2019 Oct 29.

Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, 1110 N. Stonewall Avenue, Oklahoma City, OK 73117, USA.

Irritant Contact Dermatitis (ICD) is characterized by epidermal hyperplasia and inflammatory cytokine release. IL-6 has been shown to be involved in the pathogenesis of ICD; however, the involvement of the IL-22/IL-22R axis and its relation to IL-6 in the inflammatory response following irritant exposure are unknown. Using a chemical model of ICD, it was observed that mice with a keratinocyte-specific knockout of IL-6R (IL-6R) presented with increased inflammation and IL-22R and IL-22 protein expression relative to WT following irritant exposure, indicating that IL-6R deficiency in epidermal keratinocytes leads to the upregulation of IL-22R and its ligand during ICD. Read More

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http://dx.doi.org/10.1155/2019/6276254DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6875369PMC

Inflammatory involvement into phototoxic reaction in erythropoietic protoporphyria (EPP) patients.

Immunol Res 2019 10;67(4-5):382-389

Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, U.O.C. Medicina Generale, Via F. Sforza 35, 20122, Milan, Italy.

Phototoxic reaction is a known feature of EPP at least in part triggered by the oxidative status, complement system activation, and mast cell response. The aim of this study was to verify some aspects involved in phototoxic reaction during a season. The complement system was evaluated by C3 assay, alternative pathway by factor-B, and classical pathway by C1q; oxidative status was tested with malondialdehyde (MDA) and mast cell by IL-10 assay. Read More

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http://dx.doi.org/10.1007/s12026-019-09097-5DOI Listing
October 2019

Cat Allergy as a Source Intensification of Atopic Dermatitis in Adult Patients.

Adv Exp Med Biol 2020 ;1251:39-47

Department of Physiotherapy, Opole Medical School, Opole, Poland.

Atopic dermatitis (AD) is characterized by exacerbations and remissions of eczematous skin, underlain by impaired skin barrier and aberrant Th2-type and Th-22 cytokine production. A number of allergens, in particular contact with fur animals, may aggravate the disease. This study seeks to define the influence of having a regular contact with a pet cat at home on the severity of symptoms and signs of AD. Read More

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http://dx.doi.org/10.1007/5584_2019_451DOI Listing

Ophiopogonin D ameliorates DNCB-induced atopic dermatitis-like lesions in BALB/c mice and TNF-α- inflamed HaCaT cell.

Biochem Biophys Res Commun 2020 Jan 15;522(1):40-46. Epub 2019 Nov 15.

College of Korean Medicine, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447, Republic of Korea; Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Republic of Korea; Department of Biological Science in Korean Medicine, College of Korean Medicine, Graduate School, Kyung Hee University, Republic of Korea. Electronic address:

Atopic dermatitis (AD) can occur in both children and adults, and the symptoms include itching and eczema, which in turn cause patients to suffer. Ophiopogonin D (OP-D) is a steroidal glycoside from Radix Ophiopogon japonicus, which is well known as an effective anti-inflammatory herbal medicine in many Asian countries. In this study, we aimed to investigate the anti-inflammatory effects of OP-D, using an AD mouse model and inflamed HaCaT cells. Read More

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http://dx.doi.org/10.1016/j.bbrc.2019.10.190DOI Listing
January 2020

CXCL14 downregulation in human keratinocytes is a potential biomarker for a novel in vitro skin sensitization test.

Toxicol Appl Pharmacol 2020 Jan 14;386:114828. Epub 2019 Nov 14.

College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea; Natural Products Research Institute, Seoul National University, Seoul 08826, Republic of Korea. Electronic address:

To elucidate the roles of epidermal keratinocytes in the toxicological outcomes of chemically induced contact dermatitis, genome-scale transcriptional analyses were performed using normal human keratinocytes (NHKCs) treated with 10 μM sodium lauryl sulfate (SLS) or 5 μM urushiol. In Gene Ontology (GO) enrichment analyses, SLS- and urushiol-induced upregulated DEGs are commonly associated with the regulation of pro-inflammatory responses and epidermal differentiation processes in NHKCs whereas cellular protein metabolic process was also identified as a commonly downregulated DEG signature. Among the downregulated DEGs, CXCL14 was investigated as a potential biomarker for a new in vitro skin sensitization test using OECD TG429 reference chemicals. Read More

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http://dx.doi.org/10.1016/j.taap.2019.114828DOI Listing
January 2020

Anti-inflammatory effect of lanoconazole on 12-O-tetradecanoylphorbol-13-acetate- and 2,4,6-trinitrophenyl chloride-induced skin inflammation in mice.

Mycoses 2020 Feb 27;63(2):189-196. Epub 2019 Nov 27.

Drug Development Research Laboratories, Maruho Co., Ltd., Kyoto, Japan.

Background: Lanoconazole (LCZ) is a topical antifungal agent clinically used to treat fungal infections such as tinea pedis. LCZ has not only antifungal effects but also anti-inflammatory effects, which have the potential to provide additional clinical benefits. However, the characteristic features of the inhibitory effects of LCZ on skin inflammation remain unclear. Read More

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http://dx.doi.org/10.1111/myc.13034DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7003819PMC
February 2020

Understanding allergic multimorbidity within the non-eosinophilic interactome.

PLoS One 2019 6;14(11):e0224448. Epub 2019 Nov 6.

ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.

Background: The mechanisms explaining multimorbidity between asthma, dermatitis and rhinitis (allergic multimorbidity) are not well known. We investigated these mechanisms and their specificity in distinct cell types by means of an interactome-based analysis of expression data.

Methods: Genes associated to the diseases were identified using data mining approaches, and their multimorbidity mechanisms in distinct cell types were characterized by means of an in silico analysis of the topology of the human interactome. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0224448PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6834334PMC
March 2020
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Proteomic analysis of haptenation by skin sensitisers: Diphencyprone and ethyl acrylate.

Toxicol In Vitro 2020 Feb 24;62:104697. Epub 2019 Oct 24.

Centre for Proteomic Research, Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, UK; Biological Sciences, University of Southampton, Southampton SO17 1BJ, UK. Electronic address:

The potential risk of skin sensitisation, associated with the development of allergic contact dermatitis (ACD), is a consideration in the safety assessment of new ingredients for use in personal care products. Protein haptenation in skin by sensitising chemicals is the molecular initiating event causative of skin sensitisation. Current methods for monitoring skin sensitisation rely on limited reactivity assays, motivating interest in the development of proteomic approaches to characterise the skin haptenome. Read More

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http://dx.doi.org/10.1016/j.tiv.2019.104697DOI Listing
February 2020

Paeoniflorin inhibits MRGPRX2-mediated pseudo-allergic reaction via calcium signaling pathway.

Phytother Res 2020 Feb 31;34(2):401-408. Epub 2019 Oct 31.

School of Pharmacy, Xi'an Jiaotong University, Xi'an, China.

Mas-related G protein-coupled receptor-X2 (MRGPRX2) expressed on mast cells (MCs) has been shown to be a pivotal target for pseudo-allergic diseases. Therefore, MRGPRX2 might be a therapeutic target for allergic contact dermatitis, atopic dermatitis, and red man syndrome. Paeoniflorin (PF) was reported to have an antiinflammatory effect in neuroinflammation, enteritis, and so forth. Read More

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http://dx.doi.org/10.1002/ptr.6531DOI Listing
February 2020
2 Reads
2.397 Impact Factor

Repeated Vaginal Exposures to the Common Cosmetic and Household Preservative Methylisothiazolinone Induce Persistent, Mast Cell-Dependent Genital Pain in ND4 Mice.

Int J Mol Sci 2019 Oct 28;20(21). Epub 2019 Oct 28.

Biology Department, Macalester College, Saint Paul, MN 55105, USA.

A history of allergies doubles the risk of vulvodynia-a chronic pain condition of unknown etiology often accompanied by increases in numbers of vulvar mast cells. We previously established the biological plausibility of this relationship in mouse models where repeated exposures to the allergens oxazolone or dinitrofluorobenzene on the labiar skin or inside the vaginal canal of ND4 Swiss Webster outbred mice led to persistent tactile sensitivity and local increases in mast cells. In these models, depletion of mast cells alleviated pain. Read More

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http://dx.doi.org/10.3390/ijms20215361DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6862067PMC
October 2019

Analgesic and antipruritic effects of oxymatrine sustained-release microgel cream in a mouse model of inflammatory itch and pain.

Eur J Pharm Sci 2020 Jan 22;141:105110. Epub 2019 Oct 22.

Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China; International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), College of Pharmacy, Jinan University, Guangzhou 510632, People's Republic of China. Electronic address:

Background: Allergic contact dermatitis (ACD) is a highly prevalent inflammatory and immune skin disease accompanied with persistent pruritus and pain. Oxymatrine (OMT) exhibits antipruritic and anti-inflammatory effects in squaric acid dibutyl ester (SADBE) induced ACD mice model, but the need for frequent administration stipulated by short half-life and low bioavailability limits clinical application.

Objective: To evaluate the analgesic and antipruritic effects of OMT gel (OG), OMT sustained release microgel powder (OMP) and OMT sustained release microgel cream (OMC) in SADBE induced ACD mice, with subsequent study of the mechanism and side effects (irritation) of optimal dosage form. Read More

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http://dx.doi.org/10.1016/j.ejps.2019.105110DOI Listing
January 2020
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1,2-Dichloropropane (1,2-DCP)-Induced Angiogenesis in Dermatitis.

Toxicol Res 2019 Oct 15;35(4):361-369. Epub 2019 Oct 15.

Department of Pharmacology, Metabolic Syndrome and Cell Signaling Laboratory, Institute for Cancer Research, College of Medicine, Chungnam National University, Daejeon, Korea.

1,2-Dichloropropane (1,2-DCP) has been used as an industrial solvent and a chemical intermediate, as well as in soil fumigants. Human exposure may occur during its production and industrial use. The target organs of 1,2-DCP are the eyes, respiratory system, liver, kidneys, central nervous system, and skin. Read More

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http://dx.doi.org/10.5487/TR.2019.35.4.361DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6791663PMC
October 2019
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Immunosuppressive effect of hispidulin in allergic contact dermatitis.

BMC Complement Altern Med 2019 Oct 15;19(1):268. Epub 2019 Oct 15.

Department of Pharmacology, Faculty of Medicine Siriraj Hospital, Mahidol University, 2 Wanglang Road, Bangkoknoi, Bangkok, 10700, Thailand.

Background: Long-term use of most immunosuppressants to treat allergic contact dermatitis (ACD) generates unavoidable severe side effects, warranting discovery or development of new immunosuppressants with good efficacy and low toxicity is urgently needed to treat this condition. Hispidulin, a flavonoid compound that can be delivered topically due to its favorable skin penetrability properties, has recently been reported to possess anti-inflammatory and immunosuppressive properties. However, no studies have investigated the effect of hispidulin on Th1 cell activities in an ACD setting. Read More

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http://dx.doi.org/10.1186/s12906-019-2689-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6792202PMC
October 2019
1 Read

Inflammatory kidney injury in trichloroethylene hypersensitivity syndrome mice: Possible role of C3a receptor in the accumulation of Th17 phenotype.

Ecotoxicol Environ Saf 2019 Dec 12;186:109772. Epub 2019 Oct 12.

Department of Dermatology, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China; Key Laboratory of Dermatology, Ministry of Education, Hefei, Anhui, China. Electronic address:

Trichloroethylene (TCE) is a common organic solvent which can cause TCE hypersensitivity syndrome (THS) in exposure workers. THS is an adverse skin disorder with severe inflammatory kidney damage. Complement C3a receptor (C3aR) acts as a specific receptor for the key complement cleavage product C3a and involves multiple inflammatory responses, but the role of C3aR in TCE induced kidney inflammatory injury remains unknown. Read More

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http://dx.doi.org/10.1016/j.ecoenv.2019.109772DOI Listing
December 2019