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Hirase R, Fujita T, Miyai T, Kawasaki H, Koseki H. Pharmacological Impacts of Mucopolysacccharide Polyphosphates in the Epidermis Involves Inhibition of Amphiregulin-Mediated Signals in Keratinocytes. Exp Dermatol 2024; 33:e70000. [PMID: 39422315 DOI: 10.1111/exd.70000] [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: 06/09/2024] [Revised: 09/26/2024] [Accepted: 09/29/2024] [Indexed: 10/19/2024]
Abstract
The epidermis, the most superficial layer of the human skin, serves a critical barrier function, protecting the body from external pathogens and allergens. Dysregulation of epidermal differentiation contributes to barrier dysfunction and has been implicated in the pathology of various dermatological diseases, including atopic dermatitis (AD). Mucopolysaccharide polysulphate (MPS) is a moisturising agent used to treat xerosis in patients with AD. However, its mechanism of action on keratinocytes, the main constituents of the epidermis, remains unclear. In this study, we investigated the effect of MPS on keratinocytes by subjecting adult human epidermal and three-dimensional cultured keratinocytes to MPS treatment, followed by transcriptome analysis. The analysis revealed that MPS treatment enhances keratinocyte differentiation and suppresses proliferation. We focused on amphiregulin (AREG), a membrane protein that belongs to the epidermal growth factor (EGF) family and possesses a heparin-binding domain, as a significant target among the genes altered by MPS. MPS exerted an inhibitory effect directly on AREG, rather than on EGF receptors or other members of the EGF family. Furthermore, AREG leads to a reduction in epidermal barrier function, whereas MPS contributes to barrier enhancement via AREG inhibition. Collectively, these findings suggest that MPS modulates barrier function through AREG inhibition, offering insights into potential therapeutic strategies for skin barrier restoration.
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Affiliation(s)
- Ryo Hirase
- Graduate School of Medicine, Chiba University, Chiba, Japan
- Kyoto R&D Center, Maruho Co., Ltd., Kyoto, Japan
| | | | - Tomohiro Miyai
- RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa, Japan
| | - Hiroshi Kawasaki
- RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa, Japan
| | - Haruhiko Koseki
- Graduate School of Medicine, Chiba University, Chiba, Japan
- RIKEN Center for Integrative Medical Sciences (IMS-RCAI), Kanagawa, Japan
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Abe J, Aono Y, Hirai Y. The decline in cellular iron is crucial for differentiation in keratinocytes. Metallomics 2024; 16:mfae014. [PMID: 38449344 DOI: 10.1093/mtomcs/mfae014] [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: 01/10/2024] [Accepted: 03/05/2024] [Indexed: 03/08/2024]
Abstract
Iron is a vital metal for most biological functions in tissues, and its concentration is exquisitely regulated at the cellular level. During the process of differentiation, keratinocytes in the epidermis undergo a noticeable reduction in iron content. Conversely, psoriatic lesions, characterized by disruptions in epidermal differentiation, frequently reveal an excessive accumulation of iron within keratinocytes that have undergone differentiation. In this study, we clarified the significance of attenuated cellular iron content in the intricate course of epidermal differentiation. We illustrated this phenomenon through the utilization of hinokitiol, an iron chelator derived from the heartwood of Taiwanese hinoki, which forcibly delivers iron into cells independent of the intrinsic iron-regulation systems. While primary cultured keratinocytes readily succumbed to necrotic cell death by this iron chelator, mild administration of the hinokitiol-iron complex modestly disrupts the process of differentiation in these cells. Notably, keratinocyte model cells HaCaT and anaplastic skin rudiments exhibit remarkable resilience against the cytotoxic impact of hinokitiol, and the potent artificial influx of iron explains a suppressive effect selectively on epidermal differentiation. Moreover, the augmentation of iron content induced by the overexpression of divalent metal transporter 1 culminates in the inhibition of differentiation in HaCaT cells. Consequently, the diminution in cellular iron content emerges as an important determinant influencing the trajectory of keratinocyte differentiation.
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Affiliation(s)
- Junya Abe
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
| | - Yuichi Aono
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
| | - Yohei Hirai
- Department of Biomedical Sciences, Graduate School of Science and Technology, Kwansei Gakuin University. 1, Gakuen-Uegahara, Sanda 669-1330, Japan
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Wang XH, Li M, Cheng Y, Wang GJ, Lin GL, Liu WN. Comprehensive treatment of deep frostbite of multiple fingers after trauma: A case report. World J Clin Cases 2023; 11:8219-8227. [PMID: 38130784 PMCID: PMC10731172 DOI: 10.12998/wjcc.v11.i34.8219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/27/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND Frostbite is becoming increasingly common in urban environments, and severe cases can lead to tissue loss. The treatment goal is to preserve tissue and function; the sooner appropriate treatment is administered, the more tissue can be saved. However, not every patient with deep frostbite seeks medical care promptly. CASE SUMMARY We report the case of a 73-year-old male patient who was lost in the wilderness for 2 d due to trauma and confusion. He experienced deep frostbite on multiple fingers. Treatment should not be discontinued for patients with deep frostbite who present after the optimum treatment timing. Bullae that no longer form (bloody) blisters within 24 h of aspiration should be removed. Mucopolysaccharide polysulfate cream has clinical value in frostbite treatment. The patient was transferred to Chinese Academy of Medical Sciences and Peking Union Medical College Hospital 12 h after being rescued. The patient had contraindications for thrombolysis, the most effective treatment, due to intracranial hemorrhage and presenting past the optimum treatment timing. We devised a comprehensive treatment plan, which involved delayed use vasodilators and high-pressure oxygen therapy at day 49 post-injury. We experimented with mucopolysaccharide polysulfate cream to treat the frostbite. The aim of the treatment was to safeguard as much tissue as possible. In the end, the fingers that suffered from frostbite were able to be partially preserved. CONCLUSION The case indicated that patients with severe frostbite who missed the optimal treatment time and had contraindications for thrombolysis could still partially preserve the affected limbs through comprehensive treatment.
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Affiliation(s)
- Xi-Hua Wang
- Department of General Surgery, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Min Li
- Department of General Surgery, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Yue Cheng
- Department of Nursing, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Guang-Jian Wang
- Department of General Surgery, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Guo-Le Lin
- Department of General Surgery, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Wei-Nan Liu
- Department of General Surgery, Peking Union Medical College Hospital and Chinese Academy of Medical Sciences, Beijing 100730, China
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Ning X, Wang Z, Fei W, Han Y, Liu B, Xu J, Li C, Cui Y, Yu R. Efficacy and safety of 1565-nm nonablative fractional laser combined with mucopolysaccharide polysulfate cream for erythematous acne scars. J Cosmet Dermatol 2023; 22:3008-3016. [PMID: 37464984 DOI: 10.1111/jocd.15935] [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: 07/29/2022] [Revised: 06/12/2023] [Accepted: 07/09/2023] [Indexed: 07/20/2023]
Abstract
PURPOSE To evaluate the efficacy and safety of 1565-nm nonablative fractional laser (NAFL) combined with mucopolysaccharide polysulfate (MPS) cream in the treatment of erythematous acne scars. METHODS A total of 28 subjects with erythematous acne scars from June 2021 to April 2022 were enrolled. One side of each subject's face was randomly assigned to be treated with 1565-nm NAFL (at 2 sessions with four-week intervals) combined with MPS cream (twice daily) for 8 weeks, and the other side with 1565-nm NAFL combined with placebo cream. CBS® images and parameters, dermoscopic images and the quantitative data processed by ImageJ software, and quantitative global scarring grading system (GSS) score were obtained at baseline and after treatment. Subjects' satisfaction assessment was performed after treatment. Adverse events were recorded during treatment. RESULTS In CBS® parameters, the red area, red area concentration, and smoothness were improved more significantly on the 1565-nm NAFL combined with MPS cream side than on the 1565-nm NAFL combined with placebo cream side after treatment (p = 0.015, p = 0.013, and p = 0.021). For dermoscopy, both scar area and scar redness achieved a significantly greater percentage of improvement on the side of 1565-nm NAFL combined with MPS cream than the side of 1565-nm NAFL combined with placebo cream after treatment (p = 0.005 and p = 0.041). The reduction of quantitative GSS score and Subjects' satisfaction assessment were similarly superior on the 1565-nm NAFL combined with MPS cream side. Temporary erythema was experienced by all subjects after each 1565-nm NAFL treatment. No subject reported intolerance or allergy to the cream during follow-up. CONCLUSIONS The combined application of 1565-nm NAFL and MPS cream could be an effective and safe treatment for erythematous acne scars. ImageJ software enables quantitative evaluation of dermoscopic images of acne scars.
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Affiliation(s)
- Xiaoli Ning
- Graduate School of Capital Medical University, Beijing, China
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
| | - Ziyi Wang
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Wenmin Fei
- Graduate School of Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Yang Han
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Baoyi Liu
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
- Graduate School of Chinese Academy of Medical Science & Peking Union Medical College, Beijing, China
| | - Jingkai Xu
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
| | - Chengxu Li
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
| | - Yong Cui
- Graduate School of Capital Medical University, Beijing, China
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
| | - Ruixing Yu
- Department of Dermatology, China-Japan Friendship Hospital, Beijing, China
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Zhuang BY, Hu FC, You Y, Zhang L. Observation of the clinical efficacy of isotope phosphorus-32 dressing combined with diprospan and mucopolysaccharide polysulphate cream in the treatment of keloids. J Cosmet Dermatol 2022; 21:7140-7146. [PMID: 36169608 DOI: 10.1111/jocd.15418] [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: 05/23/2022] [Revised: 08/22/2022] [Accepted: 09/26/2022] [Indexed: 01/06/2023]
Abstract
OBJECTIVE The present study aims to investigate the effectiveness, recurrence, and adverse reaction rates of isotope phosphorus-32 dressings combined with diprospan and mucopolysaccharide polysulphate cream in the treatment of keloids. METHODS A total of 80 patients with keloids admitted to the Dermatology Clinic of the Fourth Affiliated Hospital of Harbin Medical University between June 2019 and June 2021 were included in the present study and randomly divided into three groups: Control Group 1 (n = 27), Control Group 2 (n = 25), and the treatment group (n = 28). Patients in Control Group 1 were treated with diprospan combined with mucopolysaccharide polysulphate cream, patients in Control Group 2 were treated with an isotopic phosphorus-32 dressing combined with mucopolysaccharide polysulphate cream, and patients in the treatment group were treated with an isotopic phosphorus-32 dressing combined with diprospan and mucopolysaccharide polysulphate cream. The effectiveness, recurrence, and adverse reaction rates were observed in all three groups. RESULTS The treatment group had the most significant decrease in the itching scores. The respective effectiveness, recurrence, and adverse reaction rates were 81.4%, 43.6%, and 74.1% in Control Group 1; 56%, 38.7%, and 64% in Control Group 2; and 96.7%, 11.2%, and 41% in the treatment group. The differences were statistically significant (p < 0.05). CONCLUSION An isotope phosphorus-32 dressing combined with diprospan and mucopolysaccharide polysulphate cream keloid treatment delivers a fast onset, good effectiveness, and low recurrence and adverse effect rates.
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Affiliation(s)
- Bin-Yu Zhuang
- Department of Dermatology, The Fourth Affiliated Hospital of Harbin Medical University, Haerbin, China
| | - Fang-Chi Hu
- Department of Orthopeadic Surgery, Harbin First Hospital, Haerbin, China
| | - Yan You
- Department of Dermatology, The Fourth Affiliated Hospital of Harbin Medical University, Haerbin, China
| | - Liang Zhang
- Department of Dermatology, The Fourth Affiliated Hospital of Harbin Medical University, Haerbin, China
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Fujikawa M, Sugimoto H, Tamura R, Fujikawa K, Yamagishi A, Ueda Y. Effects of mucopolysaccharide polysulphate on tight junction barrier in human epidermal keratinocytes. Exp Dermatol 2022; 31:1676-1684. [PMID: 35770317 PMCID: PMC9796026 DOI: 10.1111/exd.14637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 12/30/2022]
Abstract
Tight junctions (TJs) play important roles in epidermal barrier function and their dysfunction is involved in the pathogenesis of various skin diseases, including atopic dermatitis (AD). Mucopolysaccharide polysulphate (MPS) is the active ingredient of a moisturizing agent used to treat xerosis in patients with AD; however, its mechanism of action on TJ barrier function remains unclear. To elucidate the effects of MPS on TJs, adult human epidermal keratinocyte (HEKa) cells were exposed to MPS, subjected to Western blotting and quantitative PCR analyses for the investigation of TJ-related factors. MPS treatment significantly increased the mRNA and protein expression of claudin-1 (CLDN1) and zonula occludens-1, and significantly increased transepithelial electrical resistance (TEER), which indicates TJ integrity. Conversely, the sulphated and non-sulphated glycosaminoglycans, chondroitin sulphate and hyaluronic acid, respectively, had little effect on TEER or the expression of mRNAs or TJ-related proteins. Interestingly, MPS treatment also inactivated the extracellular signal-regulated kinase signalling pathway, which is known to negatively regulate CLDN1 expression. Furthermore, MPS notably improved the reduction in CLDN1 expression and TEER caused by histamine, which is upregulated in the skin of patients with AD and is known to disrupt the TJ barrier function. Taken together, these findings demonstrate that treatment with the moisturizing agent, MPS, can repair TJ dysfunction and could therefore represent a new therapeutic option for treating patients with AD.
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Affiliation(s)
| | | | - Rie Tamura
- Kyoto R&D Center, Maruho Co., Ltd.KyotoJapan
| | | | | | - Yuhki Ueda
- Kyoto R&D Center, Maruho Co., Ltd.KyotoJapan
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Iwashita K, Etani R, Kai M, Ojima M. Effect of standard skin care treatments on skin barrier function in X-irradiated hairless mice. Asia Pac J Oncol Nurs 2022; 10:100149. [PMID: 36313787 PMCID: PMC9597121 DOI: 10.1016/j.apjon.2022.100149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/11/2022] [Accepted: 09/16/2022] [Indexed: 11/30/2022] Open
Abstract
Objective The effectiveness of skin care to radiation dermatitis (RD) on patients who received radiotherapy for cancer has not been clarified. The purpose of this study was to investigate the effect of moisturizers and skin washing on skin barrier function possibly leading to the development of RD using X-ray irradiated hairless mice. Methods Nine-week-old hairless mice were irradiated with 10 Gy of X-rays, and the skin care group had moisturizers applied or skin washing with soap from the day of irradiation during observations. The condition of the skin was observed to evaluate RD. Skin barrier function was evaluated by measuring skin temperature and transepidermal water loss (TEWL) once every two days until 25 days after X-ray irradiation. Results RD was not observed in all groups until 25 days after X-ray irradiation. Skin temperature tended to increase in all groups regardless of irradiation or skin care. However, unlike the control group, the measured value of TEWL in the no skin care group tended to increase in the days after the X-ray irradiation. On the other hand, TEWL was increased in the skin care group compared with the no skin care group a few days after X-ray irradiation. While TEWL was constant in the moisturizer group, the skin washing groups showed an increasing tendency of TEWL and it reached a peak at 13 days after X-ray irradiation. Conclusions These results suggested that the decrease in skin barrier function was caused by X-ray irradiation and also that skin washing could contribute to the deterioration of skin barrier function after X-ray irradiation.
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Li M, Li Y, Xiang L, Li L. Efficacy and Safety of Mucopolysaccharide Polysulfate Cream for Non-Exudative Eczema: A Systematic Review and Meta-Analysis. Front Med (Lausanne) 2022; 8:788324. [PMID: 35004755 PMCID: PMC8738087 DOI: 10.3389/fmed.2021.788324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Mucopolysaccharide polysulfate (MPS) cream as a moisturizer is widely applied to treat eczema, and a lot of clinical trials have demonstrated its efficacy and safety. However, there is no further research to collect and analyze these studies. Objective: This meta-analysis aimed to assess the efficacy and safety of MPS cream as monotherapy or add-on therapy for non-exudative eczema. Methods: Ten databases were searched to identify the eligible randomized controlled trials (RCTs) from their inception to July 31, 2021. Revman 5.3 software was used for the meta-analysis. Results: A total of eligible 20 studies were included. Among the 20 studies, 2 studies compared MPS cream with other moisturizers, 14 compared MPS cream plus topical corticosteroids (TCS) with TCS alone, and 4 compared with MPS cream plus tacrolimus ointment with tacrolimus ointment alone. The pooled results demonstrated that MPS cream had a higher total efficacy rate [Risk ratio (RR) 1.21, 95% CI: 1.12 to 1.30, P < 0.00001], a lower recurrence rate (RR 0.44, 95% CI: 0.26 to 0.74, P = 0.002) and a lower pruritus score [mean difference (MD) −1.78, 95% CI: −2.16 to −1.40, P < 0.00001] than urea cream or vaseline ointment. Moreover, in comparison with TCS or tacrolimus ointment alone, the combination treatment performed better in terms of total efficacy rate, total symptom score, recurrence rate, and pruritus score. For safety, the skin adverse events were mild, and MPS cream as monotherapy or add-on therapy did not increase the risk of skin adverse events. Conclusions: MPS cream as monotherapy or add-on therapy could provide a good effect for treating non-exudative eczema with mild and tolerable skin adverse events. However, due to the suboptimal quality of the included studies, high-quality and large-sample RCTs are needed in the future for update or validation. Systematic Review Registration: PROSPERO (https://www.crd.york.ac.uk/PROSPERO/), identifier: CRD42021265735.
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Affiliation(s)
- Ming Li
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yan Li
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Lujing Xiang
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Linfeng Li
- Department of Dermatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Koh J, Takahashi M, Sakata M, Yasui M, Yorozu S, Ito H. Preventive effect of a heparinoid-containing product on the application site reaction of the rotigotine transdermal patch in Parkinson's disease: A pilot randomized clinical trial (the SkinHeRo study). Clin Park Relat Disord 2021; 5:100105. [PMID: 34458718 PMCID: PMC8379504 DOI: 10.1016/j.prdoa.2021.100105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/30/2021] [Accepted: 08/08/2021] [Indexed: 12/04/2022] Open
Abstract
This is the first report on the inhibitory effect of HCP on ASRs caused by the RTP. We provided Skindex-16 scores for PD with the RTP. Appropriate skincare using HCP can prevent the ASRs induced by the RTP.
Introduction The rotigotine transdermal patch (RTP) is a dopamine agonist used to treat Parkinson’s disease (PD) but is sometimes discontinued because of application site reactions (ASRs). We aimed to investigate the effect of a heparinoid-containing product (HCP) for preventing ASRs due to the RTP by conducting a randomized controlled pilot trial. Methods Twenty patients with idiopathic non-demented PD were randomized to the skin care group using a HCP (group H) and the non-skin care group (group N). The primary outcome was the change in the baseline Skindex-16 score (ΔSkindex-16) at week 4. In addition, skin symptoms were also evaluated using the Dermatology Life Quality Index (DLQI) and International Contact Dermatitis Research Group (ICDRG) system for clinical scoring allergic patch test reactions up to week 8. Results The ΔSkindex-16 score at week 4 tended to be lower in group H than in group N, although the difference was not statistically significant (−1.5 ± 2.0 vs 1.3 ± 10.9, p = 0.53). When the patients with baseline Skindex-16 scores ≥ 7 were excluded, the ΔSkindex-16 at week 4 was significantly lower in group H (−1.5 ± 2.0 vs 6.1 ± 8.6, p = 0.042). The DLQI also tended to be lower in group H at weeks 4 and 8, but not significantly (p = 0.066 and p = 0.077, respectively). The ICDRG score at week 4 was significantly lower in group H (p = 0.044). Conclusion We suggest that the HCP has a preventive effect against ASRs cause by the RTP.
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Affiliation(s)
- Jinsoo Koh
- Department of Neurology, Wakayama Medical University, Japan
| | | | - Mayumi Sakata
- Department of Neurology, Wakayama Medical University, Japan
| | - Masaaki Yasui
- Department of Neurology, Wakayama Medical University, Japan
| | - Shoko Yorozu
- Department of Neurology, Wakayama Medical University, Japan
| | - Hidefumi Ito
- Department of Neurology, Wakayama Medical University, Japan
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Xiao C, Sun Z, Gao J, Bai Y, Zhang C, Pang B, Qiao H, Fu M, Dang E, Wang G. Enhanced phenotype of calcipotriol-induced atopic dermatitis in filaggrin-deficient mice. FASEB J 2021; 35:e21574. [PMID: 33855746 DOI: 10.1096/fj.202002709r] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 01/18/2023]
Abstract
Impaired function of filaggrin (FLG) is a major predisposing factor for atopic dermatitis (AD). Several studies on FLG-deficient (Flg-/- ) mice have indicated an essential role for FLG in the skin barrier and the development of AD, but none of the studies have described the characteristics on Flg-/- mice with calcipotriol (CPT)-induced atopic dermatitis, which restricts the comprehensive understanding of functions of FLG. The present study sought to generate Flg-/- mice and applied CPT to produce AD-like dermatitis for in vivo analysis of the FLG functions. CPT was applied on the skin of Flg-/- mice to establish the AD-like dermatitis mouse model. The lesion inflammation was evaluated by gross ear thickness, histopathology, immunofluorescence, and cytokine production. Also, mucopolysaccharide polysulfate (MPS) and ceramide were used to observe the therapeutic function in this model. The results showed that the inflammation of CPT-induced dermatitis in Flg-/- mice was more severer than that of wild-type (WT) mice, as evident by the increased level of gross appearance, ear thickness, inflammatory cell infiltration (mast cells and CD3+ T cells), and inflammatory cytokine expression (interleukin (IL)-4, IL-6, IL-13, and thymic stromal lymphopoietin (TSLP)). The emollients MPS and ceramide partially restored the epidermal function and alleviated the skin inflammation in Flg-/- mice with CPT-induced AD-like dermatitis. The current study demonstrated that skin barrier protein FLG is critical in the pathogenesis of AD. Also, the AD mouse model induced by CPT in Flg-/- mice could be utilized to search for drug targets in AD.
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Affiliation(s)
- Chunying Xiao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Zhongbin Sun
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Jixin Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Yaxing Bai
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Chen Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Bingyu Pang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Hongjiang Qiao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Meng Fu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Erle Dang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, P.R. China
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Wen S, Ye L, Liu D, Yang B, Man MQ. Topical N-palmitoyl serinol, a commensal bacterial metabolite, prevents the development of epidermal permeability barrier dysfunction in a murine model of atopic dermatitis-like skin. CANADIAN JOURNAL OF VETERINARY RESEARCH = REVUE CANADIENNE DE RECHERCHE VETERINAIRE 2021; 85:201-204. [PMID: 34248264 PMCID: PMC8243797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/15/2021] [Indexed: 06/13/2023]
Abstract
Recent studies have demonstrated that commensal bacterial metabolites benefit human health. Because of the crucial role of the epidermal permeability barrier in cutaneous and extracutaneous function, we assessed whether the topical applications of N-palmitoyl serinol (NPS) would improve the epidermal permeability barrier in murine skin. Our results show that the topical application of 0.5% NPS in ethanol twice daily for 1 week lowered basal transepidermal water loss rates and accelerated barrier recovery in normal mice. Moreover, topical NPS prevented the emergence of epidermal permeability barrier dysfunction in a murine model of allergic contact dermatitis. These results suggest that topical NPS could be used to prevent or treat skin disorders characterized by inflammation and an abnormal epidermal permeability barrier.
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Affiliation(s)
- Si Wen
- Dermatology Hospital, Southern Medical University, Guangdong 510091, P.R. China
| | - Li Ye
- Dermatology Hospital, Southern Medical University, Guangdong 510091, P.R. China
| | - Dan Liu
- Dermatology Hospital, Southern Medical University, Guangdong 510091, P.R. China
| | - Bin Yang
- Dermatology Hospital, Southern Medical University, Guangdong 510091, P.R. China
| | - Mao-Qiang Man
- Dermatology Hospital, Southern Medical University, Guangdong 510091, P.R. China
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Wen S, Wu J, Ye L, Yang B, Hu L, Man MQ. Topical Applications of a Heparinoid-Containing Product Attenuate Glucocorticoid-Induced Alterations in Epidermal Permeability Barrier in Mice. Skin Pharmacol Physiol 2021; 34:86-93. [PMID: 33652434 DOI: 10.1159/000513724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 11/13/2020] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Either systemic or topical glucocorticoids (GCs) can cause significant adverse effects on cutaneous structure and function. Although some products and ingredients can improve GC-induced abnormalities in epidermal permeability barrier, the efficacy is moderate. Prior studies in normal mice showed that topical applications of a heparinoid-containing product, Hirudoid® cream, improve epidermal barrier function by upregulation of epidermal proliferation, expression of mRNA for epidermal differentiation, and lipid production. OBJECTIVE The objective of this study was to assess whether topical applications of this product could prevent GC-induced changes in epidermal function in murine skin. MATERIALS AND METHODS One group of C57BL/6J mice was treated topically with 0.05% clobetasol propionate twice daily for 6 days, while another group was treated topically with Hirudoid® cream 30 min after each application of clobetasol propionate. Untreated mice served as normal controls. Transepidermal water loss (TEWL) rates, stratum corneum hydration, and skin surface pH were measured using respective probes connected to an MPA5 physiology monitor. qPCR was used to measure the expression levels of mRNA for keratinocyte differentiation-related proteins and lipid synthetic enzymes. RESULTS Co-applications of Hirudoid® cream with GC minimally, but significantly, increased skin thickness in comparison to GC treatment alone (p < 0.05), in parallel with increased expression levels of mRNA for PCNA in both the dermis and the epidermis. Moreover, Hirudoid® cream largely prevented GC-induced elevation in basal TEWL (p < 0.001) and delay in barrier recovery (p < 0.05), accompanied by upregulation in the expression levels of mRNA for epidermal involucrin, HMGCoA, and SPT1. However, both stratum corneum hydration and skin surface pH were comparable in the skin treated with GC alone versus GC + Hirudoid® cream. CONCLUSION Topical heparinoid-containing product can partially prevent GC-induced alterations in some epidermal functions.
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Affiliation(s)
- Si Wen
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Jiangmei Wu
- Immunology Department, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, Tianjin, China
| | - Li Ye
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Bin Yang
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Lizhi Hu
- Immunology Department, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, Tianjin, China
| | - Mao-Qiang Man
- Dermatology Hospital of Southern Medical University, Guangzhou, China,
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Dang E, Man G, Lee D, Crumrine DA, Mauro TM, Elias PM, Man MQ. Mutations in 3β-hydroxysteroid-δ8, δ7-isomerase paradoxically benefit epidermal permeability barrier homeostasis in mice. Exp Dermatol 2021; 30:384-389. [PMID: 33205489 PMCID: PMC8754084 DOI: 10.1111/exd.14236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 11/03/2020] [Accepted: 11/09/2020] [Indexed: 11/27/2022]
Abstract
Inherited or acquired blockade of distal steps in the cholesterol synthetic pathway results in ichthyosis, due to reduced cholesterol production and/or the accumulation of toxic metabolic precursors, while inhibition of epidermal cholesterol synthesis compromises epidermal permeability barrier homeostasis. We showed here that 3β-hydroxysteroid-δ8, δ7-isomerase-deficient mice (TD), an analog for CHILD syndrome in humans, exhibited not only lower basal transepidermal water loss rates, but also accelerated permeability barrier recovery despite the lower expression levels of mRNA for epidermal differentiation marker-related proteins and lipid synthetic enzymes. Moreover, TD mice displayed low skin surface pH, paralleled by increased expression levels of mRNA for sodium/hydrogen exchanger 1 (NHE1) and increased antimicrobial peptide expression, compared with wild-type (WT) mice, which may compensate for the decreased differentiation and lipid synthesis. Additionally, in comparison with WT controls, TD mice showed a significant reduction in ear thickness following challenges with either phorbol ester or oxazolone. However, TD mice exhibited growth retardation. Together, these results demonstrate that 3β-hydroxysteroid-δ8, δ7-isomerase deficiency does not compromise epidermal permeability barrier in mice, suggesting that alterations in epidermal function depend on which step of the cholesterol synthetic pathway is interrupted. But whether these findings in mice could be mirrored in humans remains to be determined.
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Affiliation(s)
- Erle Dang
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
- Department of Dermatology, Xijing Hospital, The Fourth Military Medical University, Xi’an, China
| | - George Man
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
| | - Dale Lee
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
| | - Debbie A. Crumrine
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
| | - Theodora M. Mauro
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
| | - Peter M. Elias
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
| | - Mao-Qiang Man
- Dermatology Services, Veterans Affairs Medical Center, University of California San Francisco, CA, USA
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