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Liao J, Zhao W, Zhang Y, Zou Z, Zhang Q, Chen D, Du B, Li P. Dendrobium officinale Kimura et Migo polysaccharide ameliorated DNFB-induced atopic dermatitis in mice associated with suppressing MAPK/NF-κB/STAT3 signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2024; 335:118677. [PMID: 39121927 DOI: 10.1016/j.jep.2024.118677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/28/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Dendrobium officinale Kimura et Migo as a valuable Chinese medicine has been used in China for more than 2000 years. Its main active components, polysaccharide (DOP), has been reported to have various pharmacological effects, including anti-inflammatory, antioxidant and alleviating AD effects. However, the precise mechanism underlying its therapeutic effect in AD remains largely unclear. AIM OF THE STUDY The present study sought to assess the efficacy of DOP and elucidate its intricate mechanisms in ameliorating DNFB-induced AD. MATERIALS AND METHODS Mice were sensitized with DNFB and treated with DOP application for 14 days. Treatment effects were assessed using dermatitis scores, ear thickness and scratching frequency. Epidermal thickness, mast cells and CD4+ T cells infiltration were detected by using H&E, toluidine blue staining and immunofluorescence staining respectively. Serum histamine (HIS), immunoglobulin E (IgE), thymic stromal lymphopoietin (TSLP), skin SOD, MDA, GHS, CAT, inflammatory cytokines (TNF-α, IFN-γ, IL-1β, IL-4, IL-5, IL-13) and chemokine (MIP-α, MDC, MCP-1) levels were quantify by ELISA and immunohistochemistry. Additionally, qPCR and Western blot analyses were performed to assess genes and proteins expression associated with MAPK/NF-κB/STAT3 signaling pathway. RESULTS The results indicated that DOP effectively mitigated AD-like skin lesions in mice through multiple pathways. It reduced epidermal thickness, ear thickness and scratching frequency in AD mice. Additionally, DOP mitigated inflammatory responses by decreasing the levels of inflammatory factors, as well as reducing serum levels of IgE, HIS, and TSLP. Moreover, DOP inhibited infiltration of mast cells and CD4+ T cells, suppressed the expression of skin chemokines such as MDC, MCP-1, and MIP-α, and enhanced filaggrin content in AD mice. Furthermore, DOP significantly boosted antioxidant capacity, as well as significantly reduced the expression of JAK1, STAT3, NF-κB p65, IκBα, ERK1/2, and p38 proteins and phosphorylated proteins such as p-JAK1, p-STAT3, p-NF-κB p65, p-IκBα, p-ERK1/2, and p-p38. CONCLUSIONS These findings suggested that DOP has significant anti-AD activity, primarily through reducing inflammatory responses, improving antioxidant capacity, repairing the skin barrier, and down-regulating key genes and proteins in MAPK/NF-κB/STAT3 signaling pathway, and that this study may provide valuable insights into the development of innovative therapies for the treatment of AD.
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Affiliation(s)
- Jingru Liao
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Wenjun Zhao
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Yuwei Zhang
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Zebin Zou
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Qilin Zhang
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Dongqiu Chen
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China; Hua an Tang Biotech Group Co., Ltd., Guangzhou, 510000, China
| | - Bing Du
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China
| | - Pan Li
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510640, China.
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Chen M, Wang R, Wang T. Gut microbiota and skin pathologies: Mechanism of the gut-skin axis in atopic dermatitis and psoriasis. Int Immunopharmacol 2024; 141:112658. [PMID: 39137625 DOI: 10.1016/j.intimp.2024.112658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 07/01/2024] [Accepted: 07/07/2024] [Indexed: 08/15/2024]
Abstract
Atopic dermatitis (AD) and psoriasis are chronic skin diseases with a global impact, posing significant challenges to public health systems and severely affecting patients' quality of life. This review delves into the key role of the gut microbiota in these diseases, emphasizing the importance of the gut-skin axis in inflammatory mediators and immune regulation and revealing a complex bidirectional communication system. We comprehensively assessed the pathogenesis, clinical manifestations, and treatment strategies for AD and psoriasis, with a particular focus on how the gut microbiota and their metabolites influence disease progression via the gut-skin axis. In addition, personalized treatment plans based on individual patient microbiome characteristics have been proposed, offering new perspectives for future treatment approaches. We call for enhanced interdisciplinary cooperation to further explore the interactions between gut microbiota and skin diseases and to assess the potential of drugs and natural products in modulating the gut-skin axis, aiming to advance the treatment of skin diseases.
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Affiliation(s)
- Meng Chen
- Department of Dermatology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China
| | - Rui Wang
- Department of Dermatology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China.
| | - Ting Wang
- Department of Dermatology, Taizhou Central Hospital (Taizhou University Hospital), Taizhou 318000, China.
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Sashikawa-Kimura M, Takada M, Hossain MR, Tsuda H, Xie X, Komine M, Ohtsuki M, Imokawa G. Overexpression of the β-Subunit of Acid Ceramidase in the Epidermis of Mice Provokes Atopic Dermatitis-like Skin Symptoms. Int J Mol Sci 2024; 25:8737. [PMID: 39201426 PMCID: PMC11354809 DOI: 10.3390/ijms25168737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2024] [Revised: 07/30/2024] [Accepted: 08/08/2024] [Indexed: 09/02/2024] Open
Abstract
We previously reported that a pathogenic abnormality in the barrier and water-holding functions of the stratum corneum (SC) in the skin of patients with atopic dermatitis (AD) is mainly attributable to significantly decreased levels of total ceramides in the SC. That decrease is mediated by the abnormal expression of a novel ceramide-reducing enzyme, sphingomyelin/glucosylceramide deacylase (SGDase), which is the β-subunit (ASAH1b) of acid ceramidase. In this study, we determined whether mice overexpressing ASAH1b in their epidermis develop AD-like skin symptoms. We generated transgenic (TG) mice overexpressing ASAH1b, regulated by the involucrin promoter, to localize its expression in the upper epidermis. After hair removal using a depilatory cream containing glycolic acid, the TG mice without any visible skin inflammation at 8 weeks of age had increased levels of ASAH1b and decreased levels of SC ceramide, with disrupted barrier functions measured by trans-epidermal water loss compared to the wild-type (WT) mice. Interestingly, enzymatic assays revealed that SGDase activity was not detectable in the skin of the TG mice compared to WT mice. Immunological staining revealed that there was an increased expression level of IL-33 in the epidermis and an accumulation of macrophages in the dermis of TG mice compared to WT mice, which are phenotypic characteristics of AD, that were exacerbated by tape-stripping of the skin. In the skin of the TG mice, the mRNA levels of IL-5, CCL11, IL-22, CXCL10, and IFNγ were significantly upregulated compared to the WT mice, and tape-stripping significantly increased the mRNA levels of IL-4, IL-33, CXCL1, CXCL12, TLR9, and CD163 compared to WT mice. These findings strongly indicate that the skin of the depilatory cream-treated TG mice exists in an atopic dry skin condition that is highly sensitive to various environmental stimuli. The sum of our results suggests that ASAH1b itself, even in the absence of its enzymatic activity, is a major etiologic factor for atopic dry skin symptoms via an unknown mechanism.
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Affiliation(s)
- Miho Sashikawa-Kimura
- Department of Dermatology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (M.S.-K.); (M.R.H.); (H.T.); (M.O.)
| | - Mariko Takada
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine, Utsunomiya 321-8505, Tochigi, Japan; (M.T.); (X.X.)
| | - Md Razib Hossain
- Department of Dermatology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (M.S.-K.); (M.R.H.); (H.T.); (M.O.)
| | - Hidetoshi Tsuda
- Department of Dermatology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (M.S.-K.); (M.R.H.); (H.T.); (M.O.)
| | - Xiaonan Xie
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine, Utsunomiya 321-8505, Tochigi, Japan; (M.T.); (X.X.)
| | - Mayumi Komine
- Department of Dermatology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (M.S.-K.); (M.R.H.); (H.T.); (M.O.)
| | - Mamitaro Ohtsuki
- Department of Dermatology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (M.S.-K.); (M.R.H.); (H.T.); (M.O.)
| | - Genji Imokawa
- Center for Bioscience Research and Education, Utsunomiya University, 350 Mine, Utsunomiya 321-8505, Tochigi, Japan; (M.T.); (X.X.)
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Wei Y, Zhu X, Lin S, Yang W, Wang T, Nie X, Shi Z, Liu Z, Zhang R, Li D. Zinc gluconate improves atopic dermatitis by modulating CXCL10 release of keratinocytes via PPARα activation. Biomed Pharmacother 2024; 177:117129. [PMID: 39018874 DOI: 10.1016/j.biopha.2024.117129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 07/09/2024] [Accepted: 07/10/2024] [Indexed: 07/19/2024] Open
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin condition with complex causes involving immune factors. The presence of essential trace elements that support immune system function can influence the development of this condition. This study investigated how serum trace elements impact the pathogenesis of atopic dermatitis. Upon analyzing serum microelements in AD patients and control subjects, it was observed that patients with AD had notably lower zinc levels. Genomic analysis of AD skin revealed distinct gene expression patterns, specifically the increased expression of CXCL10 in the epidermis. The heightened levels of CXCL10 in AD skin lesions were found to correlate with reduced serum zinc levels. Treatment with zinc gluconate showed reduced chemotactic response and CXCL10 release, suggesting its potential to regulate CXCL10 expression of keratinocytes in AD. The mechanism behind this involved the downregulation of STAT phosphorylation through activating PPARα. In the AD-like dermatitis mouse model, zinc gluconate therapy decreased serum IgE levels, alleviated skin lesion severity, reduced skin thickness, and lowered CXCL10 expression, demonstrating its efficacy in managing AD-like skin conditions. These findings indicate that zinc gluconate can reduce inflammation in keratinocytes by activating PPARα, inhibiting STAT signaling, and decreasing CXCL10 release, thus highlighting its potential as a therapeutic target for AD.
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Affiliation(s)
- Yujia Wei
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Xiaomei Zhu
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Shan Lin
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Wei Yang
- Department of Nutrition and Food Hygiene, Hubei Key Laboratory of Food Nutrition and Safety, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Nutrition and Food Hygiene and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Tingmei Wang
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Xiaoqi Nie
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Zeqi Shi
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Zhong Liu
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Ri Zhang
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
| | - Dong Li
- Department of Dermatology, Huazhong University of Science and Technology Tongji Medical College Tongji Hospital, Wuhan, China.
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Grześk-Kaczyńska M, Petrus-Halicka J, Kaczyński S, Bartuzi Z, Ukleja-Sokołowska N. Should Emollients Be Recommended for the Prevention of Atopic Dermatitis?-New Evidence and Current State of Knowledge. J Clin Med 2024; 13:863. [PMID: 38337555 PMCID: PMC10856443 DOI: 10.3390/jcm13030863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/17/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024] Open
Abstract
INTRODUCTION Atopic dermatitis (AD) is a chronic, pruritic skin disease with complex pathogenesis, which affects about 43 million children aged 1-4 years. One of the most known methods of alleviating symptoms of AD is emollient treatment, which varies depending on formulation and additional active ingredients. There is some evidence that emollients could be used in AD prevention in high-risk children. MATERIALS AND METHODS A search of the literature from Cochrane Library, PubMed and Medline was conducted between August and September 2023 with the following keywords: "atopic dermatitis", "emollients", and "prevention". Only randomised clinical trials published in the last 5 years were included into the meta-analysis. RESULTS Considering the inclusion criteria only 11 randomized clinical trials were taken into account, and six of them proved lack of effect of emollients in the prevention of atopic dermatitis among neonates from AD risk groups. CONCLUSIONS Emollient treatment has a good safety profile and most of the ingredients used in formulations are nonirritant for sensitive newborn and infant skin. There is some evidence of the positive effects of emollient treatment in prevention of AD in predisposed populations. The relatively high cost of emollient treatment (vs regular infant skin-care routine) would support the necessity for further evaluation of their effectiveness in nonpredisposed populations.
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Affiliation(s)
- Magdalena Grześk-Kaczyńska
- Department and Clinic of Allergy, Clinical Immunology and Internal Diseases, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.P.-H.); (N.U.-S.)
| | - Justyna Petrus-Halicka
- Department and Clinic of Allergy, Clinical Immunology and Internal Diseases, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.P.-H.); (N.U.-S.)
| | - Szymon Kaczyński
- Department of Obstetrics, Gynecology and Gynecological Oncology, Faculty of Medicine, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland;
| | - Zbigniew Bartuzi
- Department and Clinic of Allergy, Clinical Immunology and Internal Diseases, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.P.-H.); (N.U.-S.)
| | - Natalia Ukleja-Sokołowska
- Department and Clinic of Allergy, Clinical Immunology and Internal Diseases, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland; (J.P.-H.); (N.U.-S.)
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Upadhyay PR, Seminario-Vidal L, Abe B, Ghobadi C, Sims JT. Cytokines and Epidermal Lipid Abnormalities in Atopic Dermatitis: A Systematic Review. Cells 2023; 12:2793. [PMID: 38132113 PMCID: PMC10741881 DOI: 10.3390/cells12242793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Atopic dermatitis (AD) is the most common chronic inflammatory skin disease and presents a major public health problem worldwide. It is characterized by a recurrent and/or chronic course of inflammatory skin lesions with intense pruritus. Its pathophysiologic features include barrier dysfunction, aberrant immune cell infiltration, and alterations in the microbiome that are associated with genetic and environmental factors. There is a complex crosstalk between these components, which is primarily mediated by cytokines. Epidermal barrier dysfunction is the hallmark of AD and is caused by the disruption of proteins and lipids responsible for establishing the skin barrier. To better define the role of cytokines in stratum corneum lipid abnormalities related to AD, we conducted a systematic review of biomedical literature in PubMed from its inception to 5 September 2023. Consistent with the dominant TH2 skewness seen in AD, type 2 cytokines were featured prominently as possessing a central role in epidermal lipid alterations in AD skin. The cytokines associated with TH1 and TH17 were also identified to affect barrier lipids. Considering the broad cytokine dysregulation observed in AD pathophysiology, understanding the role of each of these in lipid abnormalities and barrier dysfunction will help in developing therapeutics to best achieve barrier homeostasis in AD patients.
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Affiliation(s)
- Parth R. Upadhyay
- Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN 46285, USA (C.G.); (J.T.S.)
| | - Lucia Seminario-Vidal
- Eli Lilly and Company, Lilly Corporate Center, Indianapolis, IN 46285, USA (C.G.); (J.T.S.)
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Saito-Sasaki N, Sawada Y. S100 Proteins in the Pathogenesis of Psoriasis and Atopic Dermatitis. Diagnostics (Basel) 2023; 13:3167. [PMID: 37891988 PMCID: PMC10606049 DOI: 10.3390/diagnostics13203167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/03/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
The skin, the outermost layer of the human body, is exposed to various external stimuli that cause inflammatory skin reactions. These external stimulants trigger external epithelial cell damage and the release of intracellular substances. Following cellular damage or death, intracellular molecules are released that enhance tissue inflammation. As an important substance released from damaged cells, the S100 protein is a low-molecular-weight acidic protein with two calcium-binding sites and EF-hand motif domains. S100 proteins are widely present in systemic organs and interact with other proteins. Recent studies revealed the involvement of S100 in cutaneous inflammatory disorders, psoriasis, and atopic dermatitis. This review provides detailed information on the interactions among various S100 proteins in inflammatory diseases.
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Affiliation(s)
| | - Yu Sawada
- Department of Dermatology, University of Occupational and Environmental Health, Kitakyushu 807-8555, Japan;
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