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Discepolo DR, Gaare E, Handlos G, Perry EB. Fluctuations in equine cutaneous pH and transepidermal water loss with time of day and ambient conditions. J Equine Vet Sci 2024; 140:105140. [PMID: 38950715 DOI: 10.1016/j.jevs.2024.105140] [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: 01/11/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/03/2024]
Abstract
Cutaneous pH and transepidermal water loss (TEWL) are commonly utilized measures in dermatological research as they provide information concerning barrier function. The importance of dermal health has become more evident in recent years. Accordingly, the aim of this work was to identify natural fluctuations in the biophysical parameters of healthy equine skin. Cutaneous pH and TEWL was collected on nine mares at 6:00 AM, 12:00 PM, and 6:00 PM daily for five days on the nose, withers, girth area, mid-back, and base of tail. Ambient temperature and humidity were measured at each collection. Statistical analysis was completed using SAS On Demand. Tests included repeated measures, ANOVA, and regression analysis. Mean cutaneous pH significantly differed by day (P = 0.0052) and time (P = 0.0073) but was unaffected by anatomical location (P = 0.2841). Interestingly, cutaneous pH had a significant interaction of day and location (P = 0.0004). Mean TEWL measures significantly differed by day (P < 0.0001), time (P < 0.0001), and anatomical location (P = 0.0231). Interaction of day and time had a significant effect on TEWL (P < 0.0001) and also resulted in a three-way interaction of day, time, and location (P = 0.0167). There were no significant associations of pH with temperature and humidity. All measures of TEWL across all locations were significantly correlated with temperature and humidity (P < 0.0001). Cutaneous pH and TEWL measures are affected by environmental conditions which should be considered in future models and work using dermal characteristics of horses.
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Affiliation(s)
- D R Discepolo
- Department of Animals Science, Food and Nutrition, Southern Illinois University, 1205 Lincoln Dr. Carbondale IL, 62901.
| | - E Gaare
- Department of Animals Science, Food and Nutrition, Southern Illinois University, 1205 Lincoln Dr. Carbondale IL, 62901
| | - G Handlos
- Department of Animals Science, Food and Nutrition, Southern Illinois University, 1205 Lincoln Dr. Carbondale IL, 62901
| | - E B Perry
- Department of Animals Science, Food and Nutrition, Southern Illinois University, 1205 Lincoln Dr. Carbondale IL, 62901
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2
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Yuan X, Ou C, Li X, Zhuang Z, Chen Y. The skin circadian clock gene F3 as a potential marker for psoriasis severity and its bidirectional relationship with IL-17 signaling in keratinocytes. Int Immunopharmacol 2024; 132:111993. [PMID: 38565044 DOI: 10.1016/j.intimp.2024.111993] [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: 01/23/2024] [Revised: 03/21/2024] [Accepted: 03/30/2024] [Indexed: 04/04/2024]
Abstract
OBJECTIVE Psoriasis is an immune-mediated skin disease where the IL-17 signaling pathway plays a crucial role in its development. Chronic circadian rhythm disorder in psoriasis pathogenesis is gaining more attention. The relationship between IL and 17 signaling pathway and skin clock genes remains poorly understood. METHODS GSE121212 with psoriatic lesion and healthy controls was used as the exploration cohort for searching analysis. Datasets GSE54456, GSE13355, GSE14905, GSE117239, GSE51440, and GSE137218 were applied to validation analysis. Single-cell RNA sequencing (scRNA-seq) dataset GSE173706 was used to explore the F3 expression and related pathway activities in single-cell levels. Through intersecting with high-expression DEGs, F3 was selected as the signature skin circadian gene in psoriasis for further investigation. Functional analyses, including correlation analyses, prediction of transcription factors, protein-protein interaction, and single gene GSEA to explore the potential roles of F3. ssGSEA algorithm was performed to uncover the immune-related characteristics of psoriasis. We further explored F3 expression in the specific cell population in scRNA-seq dataset, besides this, AUCell analysis was performed to explore the pathway activities and the results were further compared between the specific cell cluster. Immunohistochemistry experiment, RT-qPCR was used to validate the location and expression of F3, small interfering RNA (siRNA) transfection experiment in HaCaT, and transcriptome sequencing analysis were applied to explore the potential function of F3. RESULTS F3 was significantly down-regulated in psoriasis and interacted with IL-17 signaling pathway. Low expression of F3 could upregulate the receptor of JAK-STAT signaling, thereby promoting keratinocyte inflammation. CONCLUSION Our research revealed a bidirectional link between the skin circadian gene F3 and the IL-17 signaling pathway in psoriasis, suggesting that F3 may interact with the IL-17 pathway by activating JAK-STAT within keratinocytes and inducing abnormal intracellular inflammation.
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Affiliation(s)
- Xiuqing Yuan
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Caixin Ou
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Xinhui Li
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Zhe Zhuang
- Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Yongfeng Chen
- Dermatology Hospital of Southern Medical University, Guangzhou, China.
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Shen Z, Jiang J, Zhou X, Tan Q, Yan S, Wu X, Pi J, Wang H, Yang H, Luo X. Melatonin Attenuates Imiquimod-Induced Psoriasis-Like Inflammation and Restores the Th17/Treg Immune Balance. Inflammation 2024:10.1007/s10753-024-02023-4. [PMID: 38653920 DOI: 10.1007/s10753-024-02023-4] [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: 01/12/2024] [Revised: 03/05/2024] [Accepted: 04/05/2024] [Indexed: 04/25/2024]
Abstract
Psoriasis is a common immune-mediated skin disease characterized by abnormally reactive inflammation and epidermal hyperplasia. Previous studies have shown melatonin (MLT) has powerful anti-inflammatory effects. The mechanisms that MLT regulates psoriasis-associated skin inflammation remain unclear. Here, in imiquimod-induced psoriasis-like mice, MLT supplementation reduced skin inflammation and corrected the Th17/Treg cell imbalance. Network pharmacology and proteome sequencing analyses revealed that MLT attenuates the inflammatory response in the skin of psoriatic mice by inhibiting the PI3K/Akt signaling pathway. Overall, the data suggest that MLT has a protective effect against psoriasis-like inflammation.
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Affiliation(s)
- Zhanting Shen
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Jinqiu Jiang
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Xiaoying Zhou
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Qingqing Tan
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Shi Yan
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Xuege Wu
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Jiangshan Pi
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Hua Wang
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Huan Yang
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China
| | - Xiaoyan Luo
- Department of Dermatology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, 136 Zhongshan 2nd Road, Yuzhong District, 400014, Chongqing, China.
- Chongqing Key Laboratory of Child Infection and Immunity, Chongqing, China.
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Zhu X, Han R, Tian X, Hochgerner M, Li H, Wang J, Xia J. The opposite effect of tapinarof between IMQ and IL-23 induced psoriasis mouse models. Exp Dermatol 2024; 33:e14862. [PMID: 37350230 DOI: 10.1111/exd.14862] [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: 02/20/2023] [Revised: 06/06/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
Tapinarof is an aryl hydrocarbon receptor (AHR) ligand which is used to treat plaque psoriasis in adults. However, the underlying mechanism is not yet fully understood. In this study, we applied two of the most studied psoriasis mouse models: topical application of imiquimod (IMQ) and subcutaneous injection of IL-23. Although both models successfully induced psoriasis-like lesions in mice, tapinarof had a completely opposite effect on the two models. Tapinarof decreased the expression of multiple essential cytokines involved in the pathological IL-23/IL-17/IL-22 axis and ameliorated IMQ-induced psoriatic dermatitis, inhibiting keratinocyte proliferation and abnormal differentiation. However, in the IL-23-injection-model, tapinarof instead aggravated the disease. Here, tapinarof increased epidermal thickness and differentiated epidermal dysplasia in mice. Our data suggest that tapinarof may have different effects on varied types of psoriasis.
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Affiliation(s)
- Xingyu Zhu
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
- Institute for Six-Sector Economy, Fudan University, Shanghai, China
| | - Ruomei Han
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
| | - Xiaoxue Tian
- Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Shanghai, China
| | - Mathias Hochgerner
- Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Shanghai, China
| | - Hui Li
- MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences, Fudan University, Shanghai, China
| | - Jiucun Wang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
- Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Shanghai, China
- Research Unit of Dissecting the Population Genetics and Developing New Technologies for Treatment and Prevention of Dermatological Diseases (2019RU058), Chinese Academy of Medical Sciences, Shanghai, China
| | - Jingjing Xia
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China
- Greater Bay Area Institute of Precision Medicine (Guangzhou), School of Life Sciences, Fudan University, Shanghai, China
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Mezghiche I, Yahia-Cherbal H, Rogge L, Bianchi E. Interleukin 23 receptor: Expression and regulation in immune cells. Eur J Immunol 2024; 54:e2250348. [PMID: 37837262 DOI: 10.1002/eji.202250348] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/11/2023] [Accepted: 10/12/2023] [Indexed: 10/15/2023]
Abstract
The importance of IL-23 and its specific receptor, IL-23R, in the pathogenesis of several chronic inflammatory diseases has been established, but the underlying pathological mechanisms are not fully understood. This review focuses on IL-23R expression and regulation in immune cells.
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Affiliation(s)
| | | | - Lars Rogge
- Institut Pasteur, Université Paris Cité, Paris, France
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Xie X, Zhang L, Lin Y, Liu X, Han X, Li P. Liangxue Jiedu formula improves imiquimod-induced psoriasiform dermatitis with circadian desynchrony by regulating Th17 cell differentiation based on network pharmacological analysis. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116807. [PMID: 37331449 DOI: 10.1016/j.jep.2023.116807] [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: 03/14/2023] [Revised: 06/12/2023] [Accepted: 06/15/2023] [Indexed: 06/20/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Liangxue Jiedu formula (LXJDF) is an effective traditional Chinese medicine (TCM) formula for treating psoriasis of blood-heat syndrome and has been used in clinics for decades. AIM OF THE STUDY This study aimed to discover the mechanism of LXJDF in psoriasis and the circadian clock by network pharmacology and experimental studies. MATERIALS AND METHODS The compounds of LXJDF were obtained from the TCMSP and BATMAN-TCM databases. The genes related to psoriasis and circadian rhythm/clock were identified by the OMIM and GeneCards databases. Then, target genes were integrated by Venn and analyzed by the String, CytoNCA, DAVID (GO and KEGG) databases, and the network was constructed using Cytoscape. Mice were raised under light disturbance for fourteen days. On the eighth day, mouse dorsal skin was shaved and smeared with 62.5 mg 5% imiquimod at 8:00 (ZT0) for six successive days. Mice were randomly divided into the model, LXJDF-H (49.2 g/kg·bw), LXJDF-L (24.6 g/kg·bw), and positive drug (dexamethasone) groups. Other mice were smeared with Vaseline under the normal light cycle as the control. The drug of each group was administered at 10:00 (ZT2) and 22:00 (ZT14). The skin lesions were observed, and PASI was scored daily. HE and immunofluorescence were used to measure pathological morphology. Th17 cytokines in serum and skin were measured by flow cytometry and qPCR. Circadian clock gene and protein expression levels were determined by qPCR and Western blotting. RESULTS We found 34 potential targets of LXJDF in the treatment of psoriasis and circadian rhythm and confirmed their importance by topology analysis. KEGG pathway analysis revealed that the two major pathways were Th17 cell differentiation and the HIF-1 signaling pathway. At ZT2 and ZT14, LXJDF improved IMQ-induced light disturbance mouse skin lesions, including alleviating scales, erythema, and infiltration, reducing PASI, and inhibiting keratinocyte hyperproliferation and parakeratosis. LXJDF reduced IL-17A, IL-17F, TNF-α, and IL-6 in serum at ZT2 and increased IL-10 at ZT2 and ZT14. LXJDF downregulated the expression of IL-17A and IL-17F in skin. At ZT2, LXJDF significantly upregulated CLOCK and REV-ERBα expression and downregulated HIF-1α expression. At ZT14, LXJDF decreased HIF-1α and RORγt expression and significantly increased REV-ERBα expression. CONCLUSION LXJDF improves psoriasis dermatitis with circadian rhythm disorders by regulating Th17 cell differentiation.
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Affiliation(s)
- Xinran Xie
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China.
| | - Lei Zhang
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China
| | - Yan Lin
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China
| | - Xin Liu
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China
| | - Xuyang Han
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China
| | - Ping Li
- Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, 100010, China; Beijing Institute of Chinese Medicine, Beijing, 100010, China.
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Luckner B, Essfeld F, Ayobahan SU, Richling E, Eilebrecht E, Eilebrecht S. Transcriptomic profiling of TLR-7-mediated immune-challenge in zebrafish embryos in the presence and absence of glucocorticoid-induced immunosuppression. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115570. [PMID: 37844410 DOI: 10.1016/j.ecoenv.2023.115570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/28/2023] [Accepted: 10/08/2023] [Indexed: 10/18/2023]
Abstract
Although numerous studies imply a correlation between chemical contamination and an impaired immunocompetence of wildlife populations, the assessment of immunomodulatory modes of action is currently not covered in the regulatory requirements for the approval of new substances. This is not least due to the complexity of the immune system and a lack of standardised methods and validated biomarkers. To tackle this issue, in this study, the transcriptomic profiles of zebrafish embryos were analysed in response to the immunosuppressive compound clobetasol propionate, a synthetic glucocorticoid, and/or the immunostimulatory compound imiquimod (IMQ), a TLR-7 agonist. Using IMQ, known for its potential to induce psoriasis-like effects in mice and human, this study additionally aimed at evaluating the usability of the zebrafish embryo model as an alternative and 3R conform system for the IMQ-induced psoriasis mouse model. Our study substantiates the suitability of previously proposed genes as possible biomarkers for immunotoxicity, such as socs3, nfkbia, anxa1c, fkbp5 and irg1l. Likewise, however, our findings indicate that these genes may be less suitable to distinguish a suppressive from stimulating fashion of action. In contrast, based on a differential regulation in opposite direction in response to both compounds, krt17, rtn4a, and1, smhyc1 and gmpr were identified as potential novel biomarkers with said power to differentiate. Observed IMQ-induced alterations in the expression of genes previously associated with the pathogenesis of psoriasis such as krt17, nfkbia, parp1, pparg, nfil3-6, per2, stat4, klf2, rtn4a, anxa1c and nr1d2 indicate the inducibility of psoriatic effects in the zebrafish embryo. Our work contributes to the establishment of an approach for a 3R-compliant investigation of immunotoxic mechanisms of action in aquatic vertebrates. The validated and newly identified biomarker candidates of specific immunotoxic effects can be used in future studies in the context of environmental hazard assessment of substances or also for human-relevant immunotoxicological questions.
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Affiliation(s)
- Benedikt Luckner
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Fabian Essfeld
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany; Computational Biology, Faculty of Biology, Bielefeld University, Bielefeld, Germany
| | - Steve U Ayobahan
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Elke Richling
- Food Chemistry and Toxicology, Department of Chemistry, RPTU Kaiserslautern-Landau, Germany
| | - Elke Eilebrecht
- Department Ecotoxicology, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany
| | - Sebastian Eilebrecht
- Department Ecotoxicogenomics, Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Schmallenberg, Germany.
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Wu H, Nandakumar KS. Epicutaneous Application of Mannan Induces Psoriasis-like Inflammation in an Inbred Mouse Strain. Bio Protoc 2023; 13:e4845. [PMID: 37900099 PMCID: PMC10603198 DOI: 10.21769/bioprotoc.4845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 10/31/2023] Open
Abstract
Mannan from yeast induces psoriasis-like inflammation in the skin of inbred mouse strains. Limitations of available models led us to develop a new psoriasis model with a rapid disease onset, severe disease course, short duration, and a simple and easy-to-induce protocol with much more practically convenient features and cost-benefits. Mannan-induced skin inflammation (MISI) is more severe than the classical imiquimod (IMQ)-induced skin inflammation (IISI), with characteristic features resembling human plaque psoriasis but with relatively fewer toxicity issues. Epicutaneous application of mannan (5 mg) in incomplete Freund's adjuvant or Vaseline induces severe psoriasis in BALB/c female mice. Psoriasis area and severity index (PASI) and histological evaluation of the skin could help assess the disease development. MISI mimics natural environmental factors affecting the skin relatively more closely than IISI. This disease model can be used to dissect inflammatory pathways in the skin, identify genetic and environmental factors affecting psoriasis, and test potential pharmacological agents or new combinations of available drugs for treatment before designing clinical trials. Key features • S. cerevisiae mannan induces psoriasis-like skin inflammation (MISI) when applied on the skin of inbred mice. • The MISI model has a rapid onset, severe disease, short duration, and simple and easy-to-induce protocol. • MISI is more severe than imiquimod-induced skin inflammation (IISI). • Female mice had a more severe disease than males in the MISI model, thereby allowing the study of sex-dependent disease mechanisms. • The MISI model identifies skin inflammatory pathways and genetic/environmental factors affecting psoriasis. • The MISI model can be used as a drug testing platform for potential pharmaceuticals to develop new therapeutics for psoriasis patients. • The MISI model can be used to explore the relative contribution of different pattern recognition receptors in the development and severity of psoriasis.
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Affiliation(s)
- Huimei Wu
- Department of Pharmacy, the Eighth Affiliated City Hospital of Guangzhou Medical University, The Eighth People’s Hospital of Guangzhou, Guangzhou, China
- Southern Medical University – Karolinska Institute United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Kutty Selva Nandakumar
- Southern Medical University – Karolinska Institute United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
- Department of Environmental and Biosciences, School of Business, Innovation, and Sustainability, Halmstad University, Halmstad, Sweden
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Damiani G, Pacifico A, Scoditti E, di Gregorio S, Del Fabbro M, Cozzolino C, Buja A, Mercuri SR, Bianchi VG, Grada A, Garbarino S, Bunick CG. Circadian Oscillations of Minimal Erythema Dose (MED) are Also Influenced by Diet in Patients with Psoriasis: A Chronomedical Study. Dermatol Ther (Heidelb) 2023; 13:2229-2246. [PMID: 37573289 PMCID: PMC10539244 DOI: 10.1007/s13555-023-00987-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 07/17/2023] [Indexed: 08/14/2023] Open
Abstract
INTRODUCTION Minimal erythema dose (MED) remains a parameter of paramount importance to orient narrow-band (NB)-UVB phototherapy in psoriatic (PsO) patients. Recently, circadian rhythm and diet were recognized as potential MED modulators, but their mutual interaction remains understudied. Thus, we aimed to evaluate the potential diet modulation of MED circadian oscillations. METHODS In the first phase, a cohort study was performed comparing potential MED oscillations (morning, afternoon, and evening) among omnivorous psoriatic patients before and after a phototherapy cycle and omnivorous healthy controls. The two groups were age-, gender-, skin-type-, MED-, and diet-matched. Then, in the second phase, another cohort study was carried out comparing MED oscillations 24 h after the last phototherapeutic session only in psoriatic patients cleared with NB-UVB and undergoing different diets (vegan, vegetarian, paleo , ketogenic, intermittent circadian fasting, and omnivore). Patients with different diets were age-, gender-, and skin-type matched. RESULTS In the first phase, we enrolled only omnivores, specifically 54 PsO patients and 54 healthy individuals. Their MED before and after NB-UVB therapy changed significantly among the three different time-points (morning, afternoon, and evening) (p < 0.001). The time effect was statistically significant in both groups before and after phototherapy. In the second phase, we enrolled 144 PsO patients (vegan, vegetarian, paleo, ketogenic, intermittent circadian fasting, and omnivore). MED circadian oscillations preserved a significant difference also after clearance and were influenced by diet type and time of day (p < 0.001). In particular, vegans displayed the lowest MED values, whilst Ramadan fasting showed the highest values in morning, afternoon, and evening. CONCLUSIONS Diet, like other ongoing therapies, should be reported in the medical records of patients with psoriasis undergoing NB-UVB and patients with lower MEDs should be preferentially treated in the morning when the MED is higher.
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Affiliation(s)
- Giovanni Damiani
- Italian Center for Precision Medicine in Chronic Inflammation, University of Milan, 20122 Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
- PhD Degree Program in Pharmacological Sciences, Department of Pharmaceutical and Pharmacological Sciences, University of Padua, 35131 Padua, Italy
| | - Alessia Pacifico
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy
| | - Egeria Scoditti
- Institute of Clinical Physiology, National Research Council (CNR), 73100 Lecce, Italy
| | - Sara di Gregorio
- Italian Center for Precision Medicine in Chronic Inflammation, University of Milan, 20122 Milan, Italy
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
| | - Claudia Cozzolino
- Department of Cardiologic, Vascular and Thoracic Sciences, and Public Health, University of Padova, 35128 Padua, Italy
| | - Alessandra Buja
- Italian Center for Precision Medicine in Chronic Inflammation, University of Milan, 20122 Milan, Italy
- Department of Cardiologic, Vascular and Thoracic Sciences, and Public Health, University of Padova, 35128 Padua, Italy
| | - Santo R. Mercuri
- Unit of Dermatology, IRCCS San Raffaele Hospital, 20132 Milan, Italy
| | | | - Ayman Grada
- Department of Dermatology, Case Western Reserve University School of Medicine, Cleveland, OH USA
| | - Sergio Garbarino
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, and Maternal/Child Sciences (DINOGMI), University of Genoa, 16132 Genoa, Italy
| | - Christopher G. Bunick
- Department of Dermatology, Yale University School of Medicine, New Haven, CT USA
- Program in Translational Biomedicine, Yale University School of Medicine, New Haven, CT USA
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Gao T, Li Y, Wang X, Ren F. The Melatonin-Mitochondrial Axis: Engaging the Repercussions of Ultraviolet Radiation Photoaging on the Skin's Circadian Rhythm. Antioxidants (Basel) 2023; 12:antiox12051000. [PMID: 37237866 DOI: 10.3390/antiox12051000] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 05/28/2023] Open
Abstract
Sunlight is a vital element in modulating the central circadian rhythm, such as the regulation of the host's sleep-awake state. Sunlight is also considered to have a significant influence on the circadian rhythm of the skin. Over-exposure or prolonged exposure to sunlight can lead to skin photodamage, including hyperpigmentation, collagen degradation, fibrosis, and even skin cancer. Thus, this review will focus on the adverse effects of sunlight on the skin, not only in terms of photoaging but also its effect on the skin's circadian rhythm. Mitochondrial melatonin, regarded as a beneficial anti-aging substance for the skin, follows a circadian rhythm and exhibits a powerful anti-oxidative capacity, which has been shown to be associated with skin function. Thus, the review will focus on the influence of sunlight on skin status, not only in terms of ultraviolet radiation (UVR)-induced oxidative stress but also its mediation of circadian rhythms regulating skin homeostasis. In addition, this article will address issues regarding how best to unleash the biological potential of melatonin. These findings about the circadian rhythms of the skin have broadened the horizon of a whole new dimension in our comprehension of the molecular mechanisms of the skin and are likely to help pharmaceutical companies to develop more effective products that not only inhibit photoaging but keep valid and relevant throughout the day in future.
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Affiliation(s)
- Ting Gao
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, Beijing Laboratory of Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Yixuan Li
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, Beijing Laboratory of Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Xiaoyu Wang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, Beijing Laboratory of Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
| | - Fazheng Ren
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education, Beijing Laboratory of Food Quality and Safety, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
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11
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Salazar A, von Hagen J. Circadian Oscillations in Skin and Their Interconnection with the Cycle of Life. Int J Mol Sci 2023; 24:ijms24065635. [PMID: 36982706 PMCID: PMC10051430 DOI: 10.3390/ijms24065635] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 03/08/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Periodically oscillating biological processes, such as circadian rhythms, are carefully concerted events that are only beginning to be understood in the context of tissue pathology and organismal health, as well as the molecular mechanisms underlying these interactions. Recent reports indicate that light can independently entrain peripheral circadian clocks, challenging the currently prevalent hierarchical model. Despite the recent progress that has been made, a comprehensive overview of these periodic processes in skin is lacking in the literature. In this review, molecular circadian clock machinery and the factors that govern it have been highlighted. Circadian rhythm is closely linked to immunological processes and skin homeostasis, and its desynchrony can be linked to the perturbation of the skin. The interplay between circadian rhythm and annual, seasonal oscillations, as well as the impact of these periodic events on the skin, is described. Finally, the changes that occur in the skin over a lifespan are presented. This work encourages further research into the oscillating biological processes occurring in the skin and lays the foundation for future strategies to combat the adverse effects of desynchrony, which would likely have implications in other tissues influenced by periodic oscillatory processes.
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Affiliation(s)
- Andrew Salazar
- Merck KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany
- Correspondence:
| | - Jörg von Hagen
- Merck KGaA, Frankfurter Strasse 250, 64293 Darmstadt, Germany
- Department of Life Science Engineering, University Applied Sciences, Wiesenstrasse 14, 35390 Gießen, Germany
- ryon—GreenTech Accelerator Gernsheim GmbH, Mainzer Str. 41, 64579 Gernsheim, Germany
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12
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Fan XL, Song Y, Qin DX, Lin PY. Regulatory Effects of Clock and Bmal1 on Circadian Rhythmic TLR Expression. Int Rev Immunol 2023; 42:101-112. [PMID: 34544330 DOI: 10.1080/08830185.2021.1931170] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Circadian locomotor output cycles kaput (Clock) and brain and muscle ARNT-like 1 (Bmal1) are two core circadian clock genes. They form a heterodimer that can bind to the E-box element in the promoters of Period circadian protein (Per) and Cryptochrome (Cry) genes, thereby inducing the rhythmic expression of circadian clock control genes. Toll-like receptors (TLRs) are type I transmembrane proteins belonging to the pattern recognition receptor (PRR) family. They can recognize a variety of pathogens and play an important role in innate immunity and adaptive immune responses. Recent studies have found that the circadian clock is closely associated with the immune system. TLRs have a certain correlation with the circadian rhythms; Bmal1 seems to be the central mediator connecting the circadian clock and the immune system. Research on Bmal1 and TLRs has made some progress, but the specific relationship between TLRs and Bmal1 remains unclear. Understanding the relationship between TLRs and Clock/Bmal1 genes is increasingly important for basic research and clinical treatment.
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Affiliation(s)
- Xu-Li Fan
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Ying Song
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Dong-Xu Qin
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Pei-Yao Lin
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
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13
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Stenger S, Grasshoff H, Hundt JE, Lange T. Potential effects of shift work on skin autoimmune diseases. Front Immunol 2023; 13:1000951. [PMID: 36865523 PMCID: PMC9972893 DOI: 10.3389/fimmu.2022.1000951] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/29/2022] [Indexed: 02/16/2023] Open
Abstract
Shift work is associated with systemic chronic inflammation, impaired host and tumor defense and dysregulated immune responses to harmless antigens such as allergens or auto-antigens. Thus, shift workers are at higher risk to develop a systemic autoimmune disease and circadian disruption with sleep impairment seem to be the key underlying mechanisms. Presumably, disturbances of the sleep-wake cycle also drive skin-specific autoimmune diseases, but epidemiological and experimental evidence so far is scarce. This review summarizes the effects of shift work, circadian misalignment, poor sleep, and the effect of potential hormonal mediators such as stress mediators or melatonin on skin barrier functions and on innate and adaptive skin immunity. Human studies as well as animal models were considered. We will also address advantages and potential pitfalls in animal models of shift work, and possible confounders that could drive skin autoimmune diseases in shift workers such as adverse lifestyle habits and psychosocial influences. Finally, we will outline feasible countermeasures that may reduce the risk of systemic and skin autoimmunity in shift workers, as well as treatment options and highlight outstanding questions that should be addressed in future studies.
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Affiliation(s)
- Sarah Stenger
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
| | - Hanna Grasshoff
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
| | - Jennifer Elisabeth Hundt
- Lübeck Institute of Experimental Dermatology, University of Lübeck, Lübeck, Germany
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
| | - Tanja Lange
- Department of Rheumatology and Clinical Immunology, University of Lübeck, Lübeck, Germany
- Center for Research on Inflammation of the Skin, University of Lübeck, Lübeck, Germany
- Center of Brain, Behavior and Metabolism (CBBM), University of Lübeck, Lübeck, Germany
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14
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Butler TD, Mohammed Ali A, Gibbs JE, McLaughlin JT. Chronotype in Patients With Immune-Mediated Inflammatory Disease: A Systematic Review. J Biol Rhythms 2023; 38:34-43. [PMID: 36377205 PMCID: PMC9902971 DOI: 10.1177/07487304221131114] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Immune-mediated inflammatory diseases (IMIDs) such as rheumatoid arthritis, inflammatory bowel disease, and asthma share common pathophysiological pathways characterized by chronic inflammation and subsequent tissue damage involving multiple body sites. Circadian rhythms are 24-h body cycles that regulate immune activity and control the magnitude of immune response based on time of day. Chronotype is a person's individual circadian phase preference, ranging from morningness to eveningness, which is known to influence the risk of cardiometabolic and mental health disease. We systematically reviewed the literature to assess the association of questionnaire-based chronotype and patients with IMID. A comprehensive search of MEDLINE and Embase identified 12 studies meeting the inclusion criteria, conducted in 7 countries and covering 4 IMIDs to include 15,625 IMID patients and 410,783 healthy controls. Results showed that later chronotype may be a risk factor for worse quality of life and increased symptom burden in patients with IMIDs. In addition, chronotype may be a risk factor for IMID incidence, but the direction and magnitude of this effect were not consistent across individual IMIDs. Chronotype assessment could contribute to risk stratification in patients with IMIDs. Cross-disciplinary collaboration to understand the role of circadian rhythms and chronotype in driving common inflammatory pathways could help to improve outcomes for patients with IMIDs.
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Affiliation(s)
- Thomas D Butler
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - Aala Mohammed Ali
- Division of Diabetes, Endocrinology and Gastroenterology, The University of Manchester, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Julie E Gibbs
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK
| | - John T McLaughlin
- Division of Diabetes, Endocrinology and Gastroenterology, The University of Manchester, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
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15
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Afvari S, Beck TC, Kazlouskaya M, Afrahim R, Valdebran M. Diet, sleep, and exercise in inflammatory skin diseases. OUR DERMATOLOGY ONLINE 2023; 14:430-435. [PMID: 38161767 PMCID: PMC10755759 DOI: 10.7241/ourd.20234.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Inflammatory skin conditions are significantly impacted by lifestyle habits, particularly those related to diet, exercise, and sleep. Although ancient cultures emphasized the importance of lifestyle behaviors as both etiology and therapy in disease, modern medicine often overlooks nonpharmacological therapy. However, recent studies show that diet can have a significant impact on inflammatory skin diseases such as psoriasis, hidradenitis suppurativa, and atopic dermatitis. Foods high in glycemic index, advanced glycation end-products, and omega-6 polyunsaturated fatty acids are associated with obesity and systemic inflammation, which can exacerbate inflammatory skin diseases. In addition, lifestyle behaviors such as exercise and sleep have been shown to have positive effects on inflammatory skin diseases. This review aims to highlight the importance of lifestyle behaviors in the context of inflammation and inflammatory dermatoses.
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Affiliation(s)
- Shawn Afvari
- New York Medical College School of Medicine, Valhalla, New York, USA
| | - Tyler C. Beck
- Medical University of South Carolina, Medical Scientist Training Program, Charleston, South Carolina, USA
| | | | - Ryan Afrahim
- University of California Los Angeles, Los Angeles, California, USA
| | - Manuel Valdebran
- Department of Dermatology, Medical University of South Carolina, Charleston, South Carolina, USA
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16
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Luengas-Martinez A, Paus R, Iqbal M, Bailey L, Ray DW, Young HS. Circadian rhythms in psoriasis and the potential of chronotherapy in psoriasis management. Exp Dermatol 2022; 31:1800-1809. [PMID: 35851722 DOI: 10.1111/exd.14649] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/01/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023]
Abstract
The physiology and pathology of the skin are influenced by daily oscillations driven by a master clock located in the brain, and peripheral clocks in individual cells. The pathogenesis of psoriasis is circadian-rhythmic, with flares of disease and symptoms such as itch typically being worse in the evening/night-time. Patients with psoriasis have changes in circadian oscillations of blood pressure and heart rate, supporting wider circadian disruption. In addition, shift work, a circadian misalignment challenge, is associated with psoriasis. These features may be due to underlying circadian control of key effector elements known to be relevant in psoriasis such as cell cycle, proliferation, apoptosis and inflammation. Indeed, peripheral clock pathology may lead to hyperproliferation of keratinocytes in the basal layers, insufficient apoptosis of differentiating keratinocytes in psoriatic epidermis, dysregulation of skin-resident and migratory immune cells and modulation of angiogenesis through circadian oscillation of vascular endothelial growth factor A (VEGF-A) in epidermal keratinocytes. Chronotherapeutic effects of topical steroids and topical vitamin D analogues have been reported, suggesting that knowledge of circadian phase may improve the efficacy, and therapeutic index of treatments for psoriasis. In this viewpoint essay, we review the current literature on circadian disruption in psoriasis. We explore the hypothesis that psoriasis is circadian-driven. We also suggest that investigation of the circadian components specific to psoriasis and that the in vitro investigation of circadian regulation of psoriasis will contribute to the development of a novel chronotherapeutic treatment strategy for personalised psoriasis management. We also propose that circadian oscillations of VEGF-A offer an opportunity to enhance the efficacy and tolerability of a novel anti-VEGF-A therapeutic approach, through the timed delivery of anti-VEGF-A drugs.
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Affiliation(s)
- Andrea Luengas-Martinez
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Ralf Paus
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
- Dr. Philip Frost Department of Dermatology and Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
- Monasterium Laboratory, Muenster, Germany
- CUTANEON, Hamburg, Germany
| | - Mudassar Iqbal
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
| | - Laura Bailey
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - David W Ray
- NIHR Oxford Biomedical Research Centre, John Radcliffe Hospital, Oxford, UK
- Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Oxford, UK
| | - Helen S Young
- Centre for Dermatology Research and Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK
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17
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Darrigues J, Almeida V, Conti E, Ribot JC. The multisensory regulation of unconventional T cell homeostasis. Semin Immunol 2022; 61-64:101657. [PMID: 36370671 DOI: 10.1016/j.smim.2022.101657] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 08/29/2022] [Accepted: 09/21/2022] [Indexed: 12/14/2022]
Abstract
Unconventional T cells typically group γδ T cells, invariant Natural Killer T cells (NKT) and Mucosal Associated Invariant T (MAIT) cells. With their pre-activated status and biased tropism for non-lymphoid organs, they provide a rapid (innate-like) and efficient first line of defense against pathogens at strategical barrier sites, while they can also trigger chronic inflammation, and unexpectedly contribute to steady state physiology. Thus, a tight control of their homeostasis is critical to maintain tissue integrity. In this review, we discuss the recent advances of our understanding of the factors, from neuroimmune to inflammatory regulators, shaping the size and functional properties of unconventional T cell subsets in non-lymphoid organs. We present a general overview of the mechanisms common to these populations, while also acknowledging specific aspects of their diversity. We mainly focus on their maintenance at steady state and upon inflammation, highlighting some key unresolved issues and raising upcoming technical, fundamental and translational challenges.
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Affiliation(s)
- Julie Darrigues
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisboa, Portugal.
| | - Vicente Almeida
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Eller Conti
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - Julie C Ribot
- Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Av. Professor Egas Moniz, 1649-028 Lisboa, Portugal.
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18
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Abstract
The immune system is highly time-of-day dependent. Pioneering studies in the 1960s were the first to identify immune responses to be under a circadian control. Only in the last decade, however, have the molecular factors governing circadian immune rhythms been identified. These studies have revealed a highly complex picture of the interconnectivity of rhythmicity within immune cells with that of their environment. Here, we provide a global overview of the circadian immune system, focusing on recent advances in the rapidly expanding field of circadian immunology.
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Affiliation(s)
- Chen Wang
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Lydia Kay Lutes
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Coline Barnoud
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Christoph Scheiermann
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Geneva, Switzerland.,Biomedical Center (BMC), Institute for Cardiovascular Physiology and Pathophysiology, Walter Brendel Center for Experimental Medicine (WBex), Ludwig-Maximilians-Universität München, Planegg-Martinsried, Germany
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19
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A time to heal: microRNA and circadian dynamics in cutaneous wound repair. Clin Sci (Lond) 2022; 136:579-597. [PMID: 35445708 PMCID: PMC9069467 DOI: 10.1042/cs20220011] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 12/11/2022]
Abstract
Many biological systems have evolved circadian rhythms based on the daily cycles of daylight and darkness on Earth. Such rhythms are synchronised or entrained to 24-h cycles, predominantly by light, and disruption of the normal circadian rhythms has been linked to elevation of multiple health risks. The skin serves as a protective barrier to prevent microbial infection and maintain homoeostasis of the underlying tissue and the whole organism. However, in chronic non-healing wounds such as diabetic foot ulcers (DFUs), pressure sores, venous and arterial ulcers, a variety of factors conspire to prevent wound repair. On the other hand, keloids and hypertrophic scars arise from overactive repair mechanisms that fail to cease in a timely fashion, leading to excessive production of extracellular matrix (ECM) components such as such as collagen. Recent years have seen huge increases in our understanding of the functions of microRNAs (miRNAs) in wound repair. Concomitantly, there has been growing recognition of miRNA roles in circadian processes, either as regulators or targets of clock activity or direct responders to external circadian stimuli. In addition, miRNAs are now known to function as intercellular signalling mediators through extracellular vesicles (EVs). In this review, we explore the intersection of mechanisms by which circadian and miRNA responses interact with each other in relation to wound repair in the skin, using keratinocytes, macrophages and fibroblasts as exemplars. We highlight areas for further investigation to support the development of translational insights to support circadian medicine in the context of these cells.
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20
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Lättekivi F, Guljavina I, Midekessa G, Viil J, Heath PR, Bæk R, Jørgensen MM, Andronowska A, Kingo K, Fazeli A. Profiling Blood Serum Extracellular Vesicles in Plaque Psoriasis and Psoriatic Arthritis Patients Reveals Potential Disease Biomarkers. Int J Mol Sci 2022; 23:ijms23074005. [PMID: 35409365 PMCID: PMC9000144 DOI: 10.3390/ijms23074005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/15/2022] [Accepted: 03/29/2022] [Indexed: 02/06/2023] Open
Abstract
Psoriasis vulgaris (PsV) and psoriatic arthritis (PsA) are inflammatory diseases with unresolved pathophysiological aspects. Extracellular vesicles (EVs) play an important role in intercellular communication. We compared the miRNA contents and surface proteome of the EVs in the blood serum of PsV and PsA patients to healthy controls. Size-exclusion chromatography was used to isolate EVs from the blood serum of 12 PsV patients, 12 PsA patients and 12 healthy control subjects. EV samples were characterized and RNA sequencing was used to identify differentially enriched EV-bound miRNAs. We found 212 differentially enriched EV-bound miRNAs present in both PsV and PsA groups—a total of 13 miRNAs at FDR ≤ 0.05. The predicted target genes of these miRNAs were significantly related to lesser known but potentially disease-relevant pathways. The EV array revealed that PsV patient EV samples were significantly enriched with CD9 EV-marker compared to controls. Analysis of EV-bound miRNAs suggests that signaling via EVs in the blood serum could play a role in the pathophysiological processes of PsV and PsA. EVs may be able to fill the void in clinically applicable diagnostic and prognostic biomarkers for PsV and PsA.
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Affiliation(s)
- Freddy Lättekivi
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14b, 50411 Tartu, Estonia; (F.L.); (I.G.); (G.M.)
| | - Irina Guljavina
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14b, 50411 Tartu, Estonia; (F.L.); (I.G.); (G.M.)
| | - Getnet Midekessa
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14b, 50411 Tartu, Estonia; (F.L.); (I.G.); (G.M.)
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia
| | - Janeli Viil
- Department of Pharmacology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14b, 50411 Tartu, Estonia;
| | - Paul R. Heath
- Sheffield Institute of Translational Neuroscience, University of Sheffield, Sheffield S10 2HQ, UK;
| | - Rikke Bæk
- Department of Clinical Immunology, Aalborg University Hospital, Urbansgade 32-36, 9000 Aalborg, Denmark; (R.B.); (M.M.J.)
| | - Malene Møller Jørgensen
- Department of Clinical Immunology, Aalborg University Hospital, Urbansgade 32-36, 9000 Aalborg, Denmark; (R.B.); (M.M.J.)
- Department of Clinical Medicine, Aalborg University, Søndre Skovvej 15, 9220 Aalborg, Denmark
| | - Aneta Andronowska
- Department of Hormonal Action Mechanisms, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima St. 10, 10-748 Olsztyn, Poland;
| | - Kulli Kingo
- Clinic of Dermatology, Institute of Clinical Medicine, University of Tartu, Raja 31, 50417 Tartu, Estonia;
- Clinic of Dermatology, Tartu University Hospital, Raja 31, 50417 Tartu, Estonia
| | - Alireza Fazeli
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Ravila St. 14b, 50411 Tartu, Estonia; (F.L.); (I.G.); (G.M.)
- Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 62, 51006 Tartu, Estonia
- Academic Unit of Reproductive and Developmental Medicine, Department of Oncology and Metabolism, Medical School, University of Sheffield, Sheffield S10 2SF, UK
- Correspondence: ; Tel.: +372-737-4425
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21
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Yeo H, Ahn SS, Jung E, Lim Y, Lee YH, Shin SY. Transcription factor EGR1 regulates the expression of the clock gene PER2 under IL-4 stimulation in human keratinocytes. J Invest Dermatol 2022; 142:2677-2686.e9. [DOI: 10.1016/j.jid.2022.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/29/2022] [Accepted: 03/29/2022] [Indexed: 11/24/2022]
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22
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Li F, Lin L, He Y, Sun G, Dong D, Wu B. BMAL1 regulates Propionibacterium acnes-induced skin inflammation via REV-ERBα in mice. Int J Biol Sci 2022; 18:2597-2608. [PMID: 35414779 PMCID: PMC8990455 DOI: 10.7150/ijbs.71719] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/09/2022] [Indexed: 11/29/2022] Open
Abstract
Acne vulgaris is a common skin disease, affecting over 80% of adolescents. Inflammation is known to play a central role in acne development. Here, we aimed to investigate the role of the central clock gene Bmal1 in acne-associated inflammation in mice. To this end, mice were injected intradermally with Propionibacterium acnes (P. acnes) to induce acne-associated skin inflammation. We found that Bmal1 and its target genes Rev-erbα, Dbp, Per1 and Cry2 were down-regulated in the skin of P. acnes-treated mice, suggesting a role of Bmal1 in the condition of acne. Supporting this, Bmal1-deleted or jet-lagged mice showed exacerbated P. acnes-induced inflammation in the skin. Regulation of P. acnes-induced inflammation by Bmal1 was further confirmed in RAW264.7 cells and primary mouse keratinocytes. Transcriptomic and protein expression analyses suggested that Bmal1 regulated P. acnes-induced inflammation via the NF-κB/NLRP3 axis, which is known to be repressed by REV-ERBα (a direct target of BMAL1). Moreover, loss of Rev-erbα in mice exacerbated P. acnes-induced inflammation. In addition, Rev-erbα silencing attenuated the inhibitory effects of Bmal1 on P. acnes-induced inflammation. Bmal1 knockdown failed to modulate P. acnes-induced inflammation in Rev-erbα-silenced cells. It was thus proposed that Bmal1 restrained P. acnes-induced skin inflammation via its target REV-ERBα, which acts on the NF-κB/NLRP3 axis to repress inflammation. In conclusion, Bmal1 disruption is identified as a potential pathological factor of acne-associated inflammation. The findings increase our understanding of the crosstalk between skin clock and acne and suggest targeting circadian rhythms as a promising approach for management of acne.
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Affiliation(s)
- Feng Li
- College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Luomin Lin
- College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Yiting He
- School of Medicine, Jinan University, Guangzhou, China
| | - Guanghui Sun
- College of pharmacy, Jinan University, Guangzhou 510632, China
| | - Dong Dong
- School of Medicine, Jinan University, Guangzhou, China
| | - Baojian Wu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou, China
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23
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Minokawa Y, Sawada Y, Nakamura M. Lifestyle Factors Involved in the Pathogenesis of Alopecia Areata. Int J Mol Sci 2022; 23:ijms23031038. [PMID: 35162962 PMCID: PMC8835065 DOI: 10.3390/ijms23031038] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/07/2022] [Accepted: 01/17/2022] [Indexed: 12/27/2022] Open
Abstract
Alopecia areata is a representative inflammatory skin disease that is associated with various environmental stimuli. While psychological stress is believed to be a major pathogenetic trigger in alopecia areata, infants and newborns also suffer from the disease, suggesting the possible presence of other environmental factors. Daily lifestyle is well known to be involved in various inflammatory diseases and influences the severity of inflammatory skin diseases. However, only a limited number of studies have summarized these influences on alopecia areata. In this review article, we summarize lifestyle factor-related influences on the pathogenesis of alopecia areata and focus on environmental factors, such as smoking, alcohol consumption, sleep, obesity, fatty acids, and gluten consumption.
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Németh V, Horváth S, Kinyó Á, Gyulai R, Lengyel Z. Expression Patterns of Clock Gene mRNAs and Clock Proteins in Human Psoriatic Skin Samples. Int J Mol Sci 2021; 23:121. [PMID: 35008548 PMCID: PMC8745255 DOI: 10.3390/ijms23010121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/17/2021] [Accepted: 12/20/2021] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a systemic inflammatory skin disorder that can be associated with sleep disturbance and negatively influence the daily rhythm. The link between the pathomechanism of psoriasis and the circadian rhythm has been suggested by several previous studies. However, there are insufficient data on altered clock mechanisms in psoriasis to prove these theories. Therefore, we investigated the expression of the core clock genes in human psoriatic lesional and non-lesional skin and in human adult low calcium temperature (HaCaT) keratinocytes after stimulation with pro-inflammatory cytokines. Furthermore, we examined the clock proteins in skin biopsies from psoriatic patients by immunohistochemistry. We found that the clock gene transcripts were elevated in psoriatic lesions, especially in non-lesional psoriatic areas, except for rev-erbα, which was consistently downregulated in the psoriatic samples. In addition, the REV-ERBα protein showed a different epidermal distribution in non-lesional skin than in healthy skin. In cytokine-treated HaCaT cells, changes in the amplitude of the bmal1, cry1, rev-erbα and per1 mRNA oscillation were observed, especially after TNFα stimulation. In conclusion, in our study a perturbation of clock gene transcripts was observed in uninvolved and lesional psoriatic areas compared to healthy skin. These alterations may serve as therapeutic targets and facilitate the development of chronotherapeutic strategies in the future.
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Affiliation(s)
| | | | | | | | - Zsuzsanna Lengyel
- Department of Dermatology, Venereology and Oncodermatology, Medical School, University of Pécs, H-7632 Pecs, Hungary; (V.N.); (S.H.); (Á.K.); (R.G.)
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Duan J, Greenberg EN, Karri SS, Andersen B. The circadian clock and diseases of the skin. FEBS Lett 2021; 595:2413-2436. [PMID: 34535902 PMCID: PMC8515909 DOI: 10.1002/1873-3468.14192] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 09/11/2021] [Accepted: 09/13/2021] [Indexed: 02/06/2023]
Abstract
Organisms have an evolutionarily conserved internal rhythm that helps them anticipate and adapt to daily changes in the environment. Synchronized to the light-dark cycle with a period of around 24 hours, the timing of the circadian clock is set by light-triggering signals sent from the retina to the suprachiasmatic nucleus. Other inputs, including food intake, exercise, and temperature, also affect clocks in peripheral tissues, including skin. Here, we review the intricate interplay between the core clock network and fundamental physiological processes in skin such as homeostasis, regeneration, and immune- and stress responses. We illustrate the effect of feeding time on the skin circadian clock and skin functions, a previously overlooked area of research. We then discuss works that relate the circadian clock and its disruption to skin diseases, including skin cancer, sunburn, hair loss, aging, infections, inflammatory skin diseases, and wound healing. Finally, we highlight the promise of circadian medicine for skin disease prevention and management.
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Affiliation(s)
- Junyan Duan
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
| | - Elyse Noelani Greenberg
- Department of Biological Chemistry, University of California, Irvine, CA 92697
- Department of Medicine, Division of Endocrinology, School of Medicine, University of California, Irvine, CA 92697
| | - Satya Swaroop Karri
- Department of Biological Chemistry, University of California, Irvine, CA 92697
| | - Bogi Andersen
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
- Department of Biological Chemistry, University of California, Irvine, CA 92697
- Department of Medicine, Division of Endocrinology, School of Medicine, University of California, Irvine, CA 92697
- Institute for Genomics and Bioinformatics, University of California, Irvine, CA 92697
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Palomino-Segura M, Hidalgo A. Circadian immune circuits. J Exp Med 2021; 218:211639. [PMID: 33372990 PMCID: PMC7774593 DOI: 10.1084/jem.20200798] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/30/2022] Open
Abstract
Immune responses are gated to protect the host against specific antigens and microbes, a task that is achieved through antigen- and pattern-specific receptors. Less appreciated is that in order to optimize responses and to avoid collateral damage to the host, immune responses must be additionally gated in intensity and time. An evolutionary solution to this challenge is provided by the circadian clock, an ancient time-keeping mechanism that anticipates environmental changes and represents a fundamental property of immunity. Immune responses, however, are not exclusive to immune cells and demand the coordinated action of nonhematopoietic cells interspersed within the architecture of tissues. Here, we review the circadian features of innate immunity as they encompass effector immune cells as well as structural cells that orchestrate their responses in space and time. We finally propose models in which the central clock, structural elements, and immune cells establish multidirectional circadian circuits that may shape the efficacy and strength of immune responses and other physiological processes.
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Affiliation(s)
- Miguel Palomino-Segura
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
| | - Andrés Hidalgo
- Area of Cell and Developmental Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
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Pacifico A, Conic RRZ, Cristaudo A, Garbarino S, Ardigò M, Morrone A, Iacovelli P, di Gregorio S, Pigatto PDM, Grada A, Feldman SR, Scoditti E, Kridin K, Damiani G. Diet-Related Phototoxic Reactions in Psoriatic Patients Undergoing Phototherapy: Results from a Multicenter Prospective Study. Nutrients 2021; 13:nu13092934. [PMID: 34578812 PMCID: PMC8470626 DOI: 10.3390/nu13092934] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Revised: 08/13/2021] [Accepted: 08/19/2021] [Indexed: 01/08/2023] Open
Abstract
Vegans and vegetarians often consume foods containing photosensitizers capable of triggering phytophotodermatitis. The potential effect of vegan and vegetarian diets on the response of psoriatic patients undergoing phototherapy is not well characterized. We assessed clinical outcomes of vegan, vegetarian and omnivore adult psoriatic patients undergoing band ultraviolet B phototherapy (NB-UVB). In this multicenter prospective observational study, we enrolled 119 adult, psoriatic patients, of whom 40 were omnivores, 41 were vegetarians and 38 were vegans, with phototherapy indication. After determining the minimum erythemal dose (MED), we performed NB-UVB sessions for 8 weeks. The first irradiation dosage was 70.00% of the MED, then increased by 20.00% (no erythema) or by 10.00% (presence of erythema) until a maximum single dose of 3 J/cm2 was reached and constantly maintained. All the enrolled patients completed the 8 weeks of therapy. Severe erythema was present in 16 (42.11%) vegans, 7 (17.07%) vegetarians and 4 (10.00%) omnivores (p < 0.01). MED was lowest among vegans (21.18 ± 4.85 J/m2), followed by vegetarians (28.90 ± 6.66 J/m2) and omnivores (33.63 ± 4.53 J/m2, p < 0.01). Patients with severe erythema were more likely to have a high furocumarin intake (OR 5.67, 95% CI 3.74-8.61, p < 0.01). Vegans consumed the highest amount of furocumarin-rich foods. A model examining erythema, adjusted for gender, age, skin type, MED, phototherapy type, number of phototherapies and furocumarin intake, confirmed that vegans had a lower number of treatments. Vegans had more frequent severe erythema from NB-UVB, even after adjustment of the phototherapy protocol for their lower MED. Assessing diet information and adapting the protocol for vegan patients may be prudent.
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Affiliation(s)
- Alessia Pacifico
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy; (A.P.); (A.C.); (M.A.); (A.M.); (P.I.)
| | - Rosalynn R. Z. Conic
- Department of Preventive Medicine, Maryland University, Baltimore, MD 21201, USA;
| | - Antonio Cristaudo
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy; (A.P.); (A.C.); (M.A.); (A.M.); (P.I.)
| | - Sergio Garbarino
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal/Child Sciences, Polyclinic Hospital San Martino Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), University of Genoa, 16132 Genoa, Italy;
| | - Marco Ardigò
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy; (A.P.); (A.C.); (M.A.); (A.M.); (P.I.)
| | - Aldo Morrone
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy; (A.P.); (A.C.); (M.A.); (A.M.); (P.I.)
| | - Paolo Iacovelli
- Clinical Dermatology Department, San Gallicano Dermatological Institute, IRCCS, 00144 Rome, Italy; (A.P.); (A.C.); (M.A.); (A.M.); (P.I.)
| | - Sara di Gregorio
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy; (S.d.G.); (P.D.M.P.)
| | - Paolo Daniele Maria Pigatto
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy; (S.d.G.); (P.D.M.P.)
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
| | - Ayman Grada
- Department of Dermatology, Boston University School of Medicine, Boston, MA 02118, USA;
| | - Steven Richard Feldman
- Wake Forest School of Medicine, Department of Dermatology, Winston-Salem, NC 27157, USA;
| | - Egeria Scoditti
- Institute of Clinical Physiology, National Research Council (CNR), 73100 Lecce, Italy;
| | - Khalaf Kridin
- Lübeck Institute of Experimental Dermatology, University of Lübeck, 23538 Lübeck, Germany;
| | - Giovanni Damiani
- Clinical Dermatology, IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy; (S.d.G.); (P.D.M.P.)
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy
- PhD Degree Program in Pharmacological Sciences, Department of Pharmaceutical and Pharmacological Sciences, University of Padua, 35131 Padua, Italy
- Correspondence: ; Tel.: +39-02-662141
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Xiang K, Xu Z, Hu YQ, He YS, Wu GC, Li TY, Wang XR, Ding LH, Zhang Q, Tao SS, Ye DQ, Pan HF, Wang DG. Circadian clock genes as promising therapeutic targets for autoimmune diseases. Autoimmun Rev 2021; 20:102866. [PMID: 34118460 DOI: 10.1016/j.autrev.2021.102866] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 03/30/2021] [Indexed: 12/31/2022]
Abstract
Circadian rhythm is a natural, endogenous process whose physiological functions are controlled by a set of clock genes. Disturbance of the clock genes have detrimental effects on both innate and adaptive immunity, which significantly enhance pro-inflammatory responses and susceptibility to autoimmune diseases via strictly controlling the individual cellular components of the immune system that initiate and perpetuate the inflammation pathways. Autoimmune diseases, especially rheumatoid arthritis (RA), often exhibit substantial circadian oscillations, and circadian rhythm is involved in the onset and progression of autoimmune diseases. Mounting evidence indicate that the synthetic ligands of circadian clock genes have the property of reducing the susceptibility and clinical severity of subjects. This review supplies an overview of the roles of circadian clock genes in the pathology of autoimmune diseases, including BMAL1, CLOCK, PER, CRY, REV-ERBα, and ROR. Furthermore, summarized some circadian clock genes as candidate genes for autoimmune diseases and current advancement on therapy of autoimmune diseases with synthetic ligands of circadian clock genes. The existing body of knowledge demonstrates that circadian clock genes are inextricably linked to autoimmune diseases. Future research should pay attention to improve the quality of life of patients with autoimmune diseases and reduce the effects of drug preparation on the normal circadian rhythms.
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Affiliation(s)
- Kun Xiang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Zhiwei Xu
- School of Public Health, Faculty of Medicine, University of Queensland, 288 Herston Road, Herston, QLD, 4006, Brisbane, Australia
| | - Yu-Qian Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Yi-Sheng He
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Guo-Cui Wu
- School of Nursing, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China
| | - Tian-Yu Li
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Xue-Rong Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Li-Hong Ding
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Qin Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Sha-Sha Tao
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Dong-Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, 81 Meishan Road, Hefei, Anhui, China; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, 81 Meishan Road, Hefei, Anhui, China.
| | - De-Guang Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China.
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29
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The Impact of the Circadian Clock on Skin Physiology and Cancer Development. Int J Mol Sci 2021; 22:ijms22116112. [PMID: 34204077 PMCID: PMC8201366 DOI: 10.3390/ijms22116112] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 12/13/2022] Open
Abstract
Skin cancers are growing in incidence worldwide and are primarily caused by exposures to ultraviolet (UV) wavelengths of sunlight. UV radiation induces the formation of photoproducts and other lesions in DNA that if not removed by DNA repair may lead to mutagenesis and carcinogenesis. Though the factors that cause skin carcinogenesis are reasonably well understood, studies over the past 10–15 years have linked the timing of UV exposure to DNA repair and skin carcinogenesis and implicate a role for the body’s circadian clock in UV response and disease risk. Here we review what is known about the skin circadian clock, how it affects various aspects of skin physiology, and the factors that affect circadian rhythms in the skin. Furthermore, the molecular understanding of the circadian clock has led to the development of small molecules that target clock proteins; thus, we discuss the potential use of such compounds for manipulating circadian clock-controlled processes in the skin to modulate responses to UV radiation and mitigate cancer risk.
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30
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Sawada Y, Nakamura M. Daily Lifestyle and Cutaneous Malignancies. Int J Mol Sci 2021; 22:5227. [PMID: 34069297 PMCID: PMC8156459 DOI: 10.3390/ijms22105227] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/09/2021] [Accepted: 05/13/2021] [Indexed: 12/11/2022] Open
Abstract
Daily lifestyle is a fundamental part of human life and its influence accumulates daily in the human body. We observe that a good daily lifestyle has a beneficial impact on our health; however, the actual effects of individual daily lifestyle factors on human skin diseases, especially skin cancers, have not been summarized. In this review, we focused on the influence of daily lifestyle on the development of skin cancer and described the detailed molecular mechanisms of the development or regulation of cutaneous malignancies. Several daily lifestyle factors, such as circadian rhythm disruption, smoking, alcohol, fatty acids, dietary fiber, obesity, and ultraviolet light, are known to be associated with the risk of cutaneous malignancies, malignant melanoma, squamous cell carcinoma, basal cell carcinoma, and Merkel cell carcinoma. Although the influence of some daily lifestyles on the risk of skin cancers is controversial, this review provides us a better understanding of the relationship between daily lifestyle factors and skin cancers.
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Affiliation(s)
- Yu Sawada
- Department of Dermatology, University of Occupational and Environmental Health 1-1, Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan;
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31
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Sawada Y, Saito-Sasaki N, Mashima E, Nakamura M. Daily Lifestyle and Inflammatory Skin Diseases. Int J Mol Sci 2021; 22:ijms22105204. [PMID: 34069063 PMCID: PMC8156947 DOI: 10.3390/ijms22105204] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 05/09/2021] [Accepted: 05/12/2021] [Indexed: 12/13/2022] Open
Abstract
Throughout life, it is necessary to adapt to the Earth’s environment in order to survive. A typical example of this is that the daily Earth cycle is different from the circadian rhythm in human beings; however, the ability to adapt to the Earth cycle has contributed to the development of human evolution. In addition, humans can consume and digest Earth-derived foods and use luxury materials for nutrition and enrichment of their lives, as an adaptation to the Earth’s environment. Recent studies have shown that daily lifestyles are closely related to human health; however, less attention has been paid to the fact that obesity due to excessive energy intake, smoking, and alcohol consumption contributes to the development of inflammatory skin diseases. Gluten or wheat protein, smoking and alcohol, sleep disturbance, and obesity drive the helper T (Th)1/Th2/Th17 immune response, whereas dietary fiber and omega-3 fatty acids negatively regulate inflammatory cytokine production. In this review, we have focused on daily lifestyles and the mechanisms involved in the pathogenesis of inflammatory skin diseases.
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32
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Ottman N, Barrientos‐Somarribas M, Fyhrquist N, Alexander H, Wisgrill L, Olah P, Tsoka S, Greco D, Levi‐Schaffer F, Soumelis V, Schröder JM, Kere J, Nestle FO, Barker J, Ranki A, Lauerma A, Homey B, Andersson B, Alenius H. Microbial and transcriptional differences elucidate atopic dermatitis heterogeneity across skin sites. Allergy 2021; 76:1173-1187. [PMID: 33001460 PMCID: PMC8246754 DOI: 10.1111/all.14606] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 09/03/2020] [Accepted: 09/06/2020] [Indexed: 12/29/2022]
Abstract
It is well established that different sites in healthy human skin are colonized by distinct microbial communities due to different physiological conditions. However, few studies have explored microbial heterogeneity between skin sites in diseased skin, such as atopic dermatitis (AD) lesions. To address this issue, we carried out deep analysis of the microbiome and transcriptome in the skin of a large cohort of AD patients and healthy volunteers, comparing two physiologically different sites: upper back and posterior thigh. Microbiome samples and biopsies were obtained from both lesional and nonlesional skin to identify changes related to the disease process. Transcriptome analysis revealed distinct disease-related gene expression profiles depending on anatomical location, with keratinization dominating the transcriptomic signatures in posterior thigh, and lipid metabolism in the upper back. Moreover, we show that relative abundance of Staphylococcus aureus is associated with disease severity in the posterior thigh, but not in the upper back. Our results suggest that AD may select for similar microbes in different anatomical locations-an "AD-like microbiome," but distinct microbial dynamics can still be observed when comparing posterior thigh to upper back. This study highlights the importance of considering the variability across skin sites when studying the development of skin inflammation.
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Affiliation(s)
- Noora Ottman
- Institute of Environmental Medicine Karolinska Institutet Stockholm Sweden
| | | | - Nanna Fyhrquist
- Institute of Environmental Medicine Karolinska Institutet Stockholm Sweden
- Human Microbiome Research Program University of Helsinki Helsinki Finland
| | - Helen Alexander
- St John's Institute of Dermatology Guy's and St Thomas' NHS Foundation Trust and King's College London London UK
| | - Lukas Wisgrill
- Division of Neonatology Pediatric Intensive Care and Neuropediatrics Medical University of Vienna Vienna Austria
| | - Peter Olah
- Department of Dermatology University Hospital Duesseldorf Duesseldorf Germany
- Department of Dermatology, Venereology and Oncodermatology University of Pécs Pécs Hungary
| | - Sophia Tsoka
- Department of Informatics Faculty of Natural and Mathematical Sciences King’s College London London UK
| | - Dario Greco
- Faculty of Medicine and Life Sciences University of Tampere Tampere Finland
- Institute of Biomedical Technology University of Tampere Tampere Finland
- Institute of Biotechnology University of Helsinki Helsinki Finland
| | - Francesca Levi‐Schaffer
- Pharmacology Unit School of Pharmacy Faculty of Medicine The Institute for Drug Research The Hebrew University of Jerusalem Jerusalem Israel
| | | | - Jens M. Schröder
- Department of Dermatology University Hospital Schleswig‐Holstein Kiel Germany
| | - Juha Kere
- Department of Biosciences and Nutrition Karolinska Institutet Stockholm Sweden
- School of Basic and Medical Biosciences King’s College London London UK
| | - Frank O. Nestle
- Cutaneous Medicine Unit St. John’s Institute of Dermatology and Biomedical Research Centre Faculty of Life Sciences and Medicine King’s College London London UK
| | - Jonathan Barker
- St John’s Institute of Dermatology Division of Genetics and Molecular Medicine Faculty of Life Sciences and Medicine Kings College London London UK
| | - Annamari Ranki
- Department of Dermatology, Allergology and Venereology Inflammation Centre University of Helsinki and Helsinki University Hospital Helsinki Finland
| | - Antti Lauerma
- Department of Dermatology, Allergology and Venereology Inflammation Centre University of Helsinki and Helsinki University Hospital Helsinki Finland
| | - Bernhard Homey
- Department of Dermatology University Hospital Duesseldorf Duesseldorf Germany
| | - Björn Andersson
- Department of Cell and Molecular Biology Karolinska Institutet Stockholm Sweden
| | - Harri Alenius
- Institute of Environmental Medicine Karolinska Institutet Stockholm Sweden
- Human Microbiome Research Program University of Helsinki Helsinki Finland
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Per2 attenuates LPS-induced chondrocyte injury through the PTEN/PI3K/Akt signalling pathway. Biosci Rep 2021; 40:224736. [PMID: 32426819 PMCID: PMC7256672 DOI: 10.1042/bsr20200417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/07/2020] [Accepted: 05/15/2020] [Indexed: 01/03/2023] Open
Abstract
This research aimed to explore the role of period circadian clock 2 (Per2) in the evolution of osteoarthritis (OA) and the relevant mechanisms. Per2 messenger RNA (mRNA) and protein levels were markedly reduced in NHAC-kn cells treated with 5 µg/ml lipopolysaccharide (LPS) for 12 h. Then, pcDNA3.1-Per2 and si-Per2 were recruited to boost and reduce the expression of Per2, respectively. MTT assay, apoptosis analysis and enzyme-linked immunosorbent assay (ELISA) results showed that Per2 increased cell proliferation, while inhibited apoptosis and inflammation. Furthermore, the PTEN/PI3K/Akt signalling pathway was activated by Per2 overexpression; the CO-IP data confirmed that Per2 specifically bound to PTEN. Through employing IGF-1, a PI3K activator, we determined that Per2-mediated inflammation response in LPS-stimulated NHAC-kn cells through the PTEN/PI3K/Akt signalling pathway. In summary, the present study indicates that Per2 may serve as a novel therapeutic target through activating the PTEN/PI3K/Akt signalling pathway.
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34
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Castillo-González R, Cibrian D, Sánchez-Madrid F. Dissecting the complexity of γδ T-cell subsets in skin homeostasis, inflammation, and malignancy. J Allergy Clin Immunol 2020; 147:2030-2042. [PMID: 33259837 DOI: 10.1016/j.jaci.2020.11.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 11/12/2020] [Accepted: 11/17/2020] [Indexed: 12/14/2022]
Abstract
γδ T cells are much less common than αβ T cells, accounting for 0.5% to 5% of all T lymphocytes in the peripheral blood and lymphoid tissues in mice and humans. However, they are the most abundant T-lymphocyte subset in some epithelial barriers such as mouse skin. γδ T cells are considered innate lymphocytes because of their non-MHC restricted antigen recognition, as well as because of their rapid response to cytokines, invading pathogens, and malignant cells. Exacerbated expansion and activation of γδ T cells in the skin is a common feature of acute and chronic skin inflammation such as psoriasis and contact or atopic dermatitis. Different γδ T-cell subsets showing differential developmental and functional features are found in mouse and human skin. This review discusses the state of the art of research and future perspectives about the role of the different subsets of γδ T-cells detected in the skin in steady-state, psoriasis, dermatitis, infection, and malignant skin diseases. Also, we highlight the differences between human and mouse γδ T cells in skin homeostasis and inflammation, as understanding the differential role of each subtype of skin γδ T cells will improve the discovery of new therapies.
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Affiliation(s)
- Raquel Castillo-González
- Immunology Service, Hospital de la Princesa, Instituto Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain
| | - Danay Cibrian
- Immunology Service, Hospital de la Princesa, Instituto Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, Carlos III Health Institute, Madrid, Spain.
| | - Francisco Sánchez-Madrid
- Immunology Service, Hospital de la Princesa, Instituto Investigación Sanitaria Princesa, Universidad Autónoma de Madrid, Madrid, Spain; Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; CIBER de Enfermedades Cardiovasculares, Carlos III Health Institute, Madrid, Spain.
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35
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Frazier K, Frith M, Harris D, Leone VA. Mediators of Host–Microbe Circadian Rhythms in Immunity and Metabolism. BIOLOGY 2020; 9:biology9120417. [PMID: 33255707 PMCID: PMC7761326 DOI: 10.3390/biology9120417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/20/2020] [Indexed: 12/27/2022]
Abstract
Simple Summary Circadian rhythms serve as the body’s internal metronome, driving responses to environmental cues over a 24-h period. Essential to nearly all life forms, the core circadian clock gene network drives physiological outputs associated with metabolic and immune responses. Modern-day disruptions to host circadian rhythms, such as shift work and jet lag, result in aberrant metabolic responses and development of complex diseases, including obesity and Type 2 Diabetes. These complex diseases are also impacted by interactions between gut microbes and the host immune system, driving a chronic low-grade inflammatory response. Gut microbes exhibit circadian dynamics that are closely tied to host circadian networks and disrupting microbial rhythmicity contributes to metabolic diseases. The underlying mediators that drive communication between host metabolism, the immune system, gut microbes, and circadian networks remain unknown, particularly in humans. Here, we explore the current state of knowledge regarding the transkingdom control of circadian networks and discuss gaps and challenges to overcome to push the field forward from the preclinical to clinical setting. Abstract Circadian rhythms are essential for nearly all life forms, mediated by a core molecular gene network that drives downstream molecular processes involved in immune function and metabolic regulation. These biological rhythms serve as the body’s metronome in response to the 24-h light:dark cycle and other timed stimuli. Disrupted circadian rhythms due to drastic lifestyle and environmental shifts appear to contribute to the pathogenesis of metabolic diseases, although the mechanisms remain elusive. Gut microbiota membership and function are also key mediators of metabolism and are highly sensitive to environmental perturbations. Recent evidence suggests rhythmicity of gut microbes is essential for host metabolic health. The key molecular mediators that transmit rhythmic signals between microbes and host metabolic networks remain unclear, but studies suggest the host immune system may serve as a conduit between these two systems, providing homeostatic signals to maintain overall metabolic health. Despite this knowledge, the precise mechanism and communication modalities that drive these rhythms remain unclear, especially in humans. Here, we review the current literature examining circadian dynamics of gut microbes, the immune system, and metabolism in the context of metabolic dysregulation and provide insights into gaps and challenges that remain.
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Affiliation(s)
- Katya Frazier
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Mary Frith
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Medical Scientist Training Program, University of Chicago, Chicago, IL 60637, USA
| | - Dylan Harris
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Vanessa A. Leone
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
- Correspondence: ; Tel.: +1-608-262-5551
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36
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Ferguson FJ, Lada G, Hunter HJA, Bundy C, Henry AL, Griffiths CEM, Kleyn CE. Diurnal and seasonal variation in psoriasis symptoms. J Eur Acad Dermatol Venereol 2020; 35:e45-e47. [PMID: 32594573 DOI: 10.1111/jdv.16791] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 12/31/2022]
Affiliation(s)
- F J Ferguson
- St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust, London, SE1 9RT, UK
| | - G Lada
- Centre for Dermatology Research, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, UK.,Dermatology Centre, Salford Royal NHS Foundation Trust, Salford, UK
| | - H J A Hunter
- Centre for Dermatology Research, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, UK.,Dermatology Centre, Salford Royal NHS Foundation Trust, Salford, UK
| | - C Bundy
- School of Healthcare Sciences, College of Biomedical and Life Sciences, Cardiff University, Cardiff, UK
| | - A L Henry
- Big Health Ltd, London, UK & San Francisco, CA, USA.,Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - C E M Griffiths
- Centre for Dermatology Research, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, UK.,Dermatology Centre, Salford Royal NHS Foundation Trust, Salford, UK
| | - C E Kleyn
- Centre for Dermatology Research, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, University of Manchester, Manchester, UK.,Dermatology Centre, Salford Royal NHS Foundation Trust, Salford, UK
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37
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Greenberg EN, Marshall ME, Jin S, Venkatesh S, Dragan M, Tsoi LC, Gudjonsson JE, Nie Q, Takahashi JS, Andersen B. Circadian control of interferon-sensitive gene expression in murine skin. Proc Natl Acad Sci U S A 2020; 117:5761-5771. [PMID: 32132203 PMCID: PMC7084068 DOI: 10.1073/pnas.1915773117] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The circadian clock coordinates a variety of immune responses with signals from the external environment to promote survival. We investigated the potential reciprocal relationship between the circadian clock and skin inflammation. We treated mice topically with the Toll-like receptor 7 (TLR7) agonist imiquimod (IMQ) to activate IFN-sensitive gene (ISG) pathways and induce psoriasiform inflammation. IMQ transiently altered core clock gene expression, an effect mirrored in human patient psoriatic lesions. In mouse skin 1 d after IMQ treatment, ISGs, including the key ISG transcription factor IFN regulatory factor 7 (Irf7), were more highly induced after treatment during the day than the night. Nuclear localization of phosphorylated-IRF7 was most prominently time-of-day dependent in epidermal leukocytes, suggesting that these cell types play an important role in the diurnal ISG response to IMQ. Mice lacking Bmal1 systemically had exacerbated and arrhythmic ISG/Irf7 expression after IMQ. Furthermore, daytime-restricted feeding, which affects the phase of the skin circadian clock, reverses the diurnal rhythm of IMQ-induced ISG expression in the skin. These results suggest a role for the circadian clock, driven by BMAL1, as a negative regulator of the ISG response, and highlight the finding that feeding time can modulate the skin immune response. Since the IFN response is essential for the antiviral and antitumor effects of TLR activation, these findings are consistent with the time-of-day-dependent variability in the ability to fight microbial pathogens and tumor initiation and offer support for the use of chronotherapy for their treatment.
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Affiliation(s)
| | | | - Suoqin Jin
- Department of Mathematics, University of California, Irvine, CA 92697
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
| | - Sanan Venkatesh
- Department of Biological Chemistry, University of California, Irvine, CA 92697
| | - Morgan Dragan
- Department of Biological Chemistry, University of California, Irvine, CA 92697
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109
| | | | - Qing Nie
- Department of Mathematics, University of California, Irvine, CA 92697
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
- Department of Developmental and Cell Biology, University of California, Irvine, CA 92697
| | - Joseph S Takahashi
- Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Bogi Andersen
- Department of Biological Chemistry, University of California, Irvine, CA 92697;
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
- Department of Medicine, Division of Endocrinology, School of Medicine, University of California, Irvine, CA 92697
- Institute for Genomics and Bioinformatics, University of California, Irvine, CA 92697
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de Assis LVM, Moraes MN, Castrucci AMDL. The molecular clock in the skin, its functionality, and how it is disrupted in cutaneous melanoma: a new pharmacological target? Cell Mol Life Sci 2019; 76:3801-3826. [PMID: 31222374 PMCID: PMC11105295 DOI: 10.1007/s00018-019-03183-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/13/2019] [Accepted: 06/05/2019] [Indexed: 02/07/2023]
Abstract
The skin is the interface between the organism and the external environment, acting as its first barrier. Thus, this organ is constantly challenged by physical stimuli such as UV and infrared radiation, visible light, and temperature as well as chemicals and pathogens. To counteract the deleterious effects of the above-mentioned stimuli, the skin has complex defense mechanisms such as: immune and neuroendocrine systems; shedding of epidermal squamous layers and apoptosis of damaged cells; DNA repair; and pigmentary system. Here we have reviewed the current knowledge regarding which stimuli affect the molecular clock of the skin, the consequences to skin-related biological processes and, based on such knowledge, we suggest some therapeutic targets. We also explored the recent advances regarding the molecular clock disruption in melanoma, its impact on the carcinogenic process, and its therapeutic value in melanoma treatment.
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Affiliation(s)
- Leonardo Vinícius Monteiro de Assis
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, R. do Matão, Trav. 14, No. 101, São Paulo, 05508-090, Brazil
| | - Maria Nathalia Moraes
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, R. do Matão, Trav. 14, No. 101, São Paulo, 05508-090, Brazil
- School of Health Science, University Anhembi Morumbi, São Paulo, Brazil
| | - Ana Maria de Lauro Castrucci
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, R. do Matão, Trav. 14, No. 101, São Paulo, 05508-090, Brazil.
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Lyons AB, Moy L, Moy R, Tung R. Circadian Rhythm and the Skin: A Review of the Literature. THE JOURNAL OF CLINICAL AND AESTHETIC DERMATOLOGY 2019; 12:42-45. [PMID: 31641418 PMCID: PMC6777699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Disruption of the circadian rhythm has been implicated in a wide variety of dermatologic conditions. Research has shown that previous ultraviolet light exposure can continue to damage the deoxyribonucleic acid (DNA) of the skin, even in the dark, and has demonstrated that repair of these skin cells peaks at night. In this article, the authors reviewed the current literature on circadian rhythm effects on the skin and describe and discuss its basic principles. Better understanding of the role circadian rhythm plays in overall skin health will assist physicians in providing optimal treatment to patients, including appropriate recommendations regarding the use of topical medications and skin care at their most effective times during a 24-hour cycle. Dermatologists should also be aware that adequate sleep is necessary for optimal DNA repair activity in the skin.
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Affiliation(s)
- Alexis B Lyons
- Dr. Lyons is with the Department of Dermatology at Henry Ford Hospital in Detroit, Michigan
- Drs. L. Moy and Tung are with the Department of Dermatology at Loyola University Medical Center in Chicago, Illinois
- Dr. R. Moy is with Moy, Fincher, Chipps Facial Plastics and Dermatology in Beverly Hills, California
| | - Lauren Moy
- Dr. Lyons is with the Department of Dermatology at Henry Ford Hospital in Detroit, Michigan
- Drs. L. Moy and Tung are with the Department of Dermatology at Loyola University Medical Center in Chicago, Illinois
- Dr. R. Moy is with Moy, Fincher, Chipps Facial Plastics and Dermatology in Beverly Hills, California
| | - Ronald Moy
- Dr. Lyons is with the Department of Dermatology at Henry Ford Hospital in Detroit, Michigan
- Drs. L. Moy and Tung are with the Department of Dermatology at Loyola University Medical Center in Chicago, Illinois
- Dr. R. Moy is with Moy, Fincher, Chipps Facial Plastics and Dermatology in Beverly Hills, California
| | - Rebecca Tung
- Dr. Lyons is with the Department of Dermatology at Henry Ford Hospital in Detroit, Michigan
- Drs. L. Moy and Tung are with the Department of Dermatology at Loyola University Medical Center in Chicago, Illinois
- Dr. R. Moy is with Moy, Fincher, Chipps Facial Plastics and Dermatology in Beverly Hills, California
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40
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Clarkson-Townsend DA, Everson TM, Deyssenroth MA, Burt AA, Hermetz KE, Hao K, Chen J, Marsit CJ. Maternal circadian disruption is associated with variation in placental DNA methylation. PLoS One 2019; 14:e0215745. [PMID: 31026301 PMCID: PMC6485638 DOI: 10.1371/journal.pone.0215745] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 04/08/2019] [Indexed: 12/13/2022] Open
Abstract
Circadian disruption is a common environmental and occupational exposure with public health consequences, but not much is known about whether circadian disruption affects in utero development. We investigated whether maternal circadian disruption, using night shift work as a proxy, is associated with variations in DNA methylation patterns of placental tissue in an epigenome-wide association study (EWAS) of night shift work. Here, we compared cytosine-guanosine dinucleotide (CpG) specific methylation genome-wide of placental tissue (measured with the Illumina 450K array) from participants (n = 237) in the Rhode Island Child Health Study (RICHS) who did (n = 53) and did not (n = 184) report working the night shift, using robust linear modeling and adjusting for maternal age, pre-pregnancy smoking, infant sex, maternal adversity, and putative cell mixture. Statistical analyses were adjusted for multiple comparisons and results presented with Bonferroni or Benjamini and Hochberg (BH) adjustment for false discovery rate. Night shift work was associated with differential methylation in placental tissue, including CpG sites in the genes NAV1, SMPD1, TAPBP, CLEC16A, DIP2C, FAM172A, and PLEKHG6 (Bonferroni-adjusted p<0.05). CpG sites within NAV1, MXRA8, GABRG1, PRDM16, WNT5A, and FOXG1 exhibited the most hypomethylation, while CpG sites within TDO2, ADAMTSL3, DLX2, and SERPINA1 exhibited the most hypermethylation (BH q<0.10). Functional analysis indicated GO-terms associated with cell-cell adhesion and enriched GWAS results for psoriasis. Night shift work was associated with differential methylation of the placenta, which may have implications for fetal health and development. This is the first study to examine the epigenetic impacts of night shift exposure, as a proxy for circadian disruption, on placental methylation in humans, and, while results should be interpreted with caution, suggests circadian disruption may have epigenetic impacts.
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Affiliation(s)
- Danielle A. Clarkson-Townsend
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Todd M. Everson
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Maya A. Deyssenroth
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Amber A. Burt
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Karen E. Hermetz
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
| | - Ke Hao
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Jia Chen
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Carmen J. Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, Georgia, United States of America
- * E-mail:
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The Impact of Intermittent Fasting (Ramadan Fasting) on Psoriatic Arthritis Disease Activity, Enthesitis, and Dactylitis: A Multicentre Study. Nutrients 2019; 11:nu11030601. [PMID: 30871045 PMCID: PMC6471071 DOI: 10.3390/nu11030601] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 03/08/2019] [Accepted: 03/08/2019] [Indexed: 12/31/2022] Open
Abstract
Intermittent circadian fasting, namely Ramadan, is a common worldwide practice. Such fasting has a positive impact on psoriasis, but no data exist on its role in psoriatic arthritis (PsA)—a disease that is clearly linked to body mass index. We enrolled 37 patients (23 females and 14 males) with a mean age 43.32 ± 7.81 and they fasted for 17 h for one month in 2016. The baseline PsA characteristics were collected and 12 (32.4%) patients had peripheral arthritis, 13 (35.1%) had axial involvement, 24 (64.9%) had enthesitis, and 13 (35.1%) had dactylitis. Three patients (8.1%) were treated with methotrexate, 28 (75.7%) with TNF-α blockers, and 6 (16.2%) with IL-17 blockers. After a month of intermittent fasting, C-reactive protein (CRP) levels decreased from 14.08 ± 4.65 to 12.16 ± 4.46 (p < 0.0001), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) decreased from 2.83 ± 1.03 to 2.08 ± 0.67 (p = 0.0078), Psoriasis Area Severity Index (PASI) decreased from 7.46 ± 2.43 to 5.86 ± 2.37 (p < 0.0001), and Disease Activity index for PSoriatic Arthritis (DAPSA) decreased from 28.11 ± 4.51 to 25.76 ± 4.48 (p < 0.0001). Similarly, enthesitis improved after fasting, with Leeds Enthesitis Index (LEI) decreasing from 2.25 ± 1.11 to 1.71 ± 0.86 (p < 0.0001) and dactylitis severity score (DSS) decreasing from 9.92 ± 2.93 to 8.54 ± 2.79 (p = 0.0001). Fasting was found to be a predictor of a decrease in PsA disease activity scores (DAPSA, BASDAI, LEI, DSS) even after adjustment for weight loss. IL-17 therapy was found to be an independent predictor of decreases in LEI after fasting. These preliminary data may support the use of chronomedicine in the context of rheumatic diseases, namely PsA. Further studies are needed to support our findings.
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Park S, Lee ES, Park NH, Hwang K, Cho EG. Circadian Expression of TIMP3 Is Disrupted by UVB Irradiation and Recovered by Green Tea Extracts. Int J Mol Sci 2019; 20:ijms20040862. [PMID: 30781538 PMCID: PMC6412890 DOI: 10.3390/ijms20040862] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/29/2019] [Accepted: 02/12/2019] [Indexed: 12/18/2022] Open
Abstract
The human skin is the outermost physical barrier and has its own circadian machinery that works either cooperatively with the central clock, or autonomously. Circadian rhythms have been observed in many functions related to epidermal homeostasis including hydration and inflammation, and this functional oscillation is disturbed by ultraviolet radiation (UVR), which is a strong environmental cue. Among the genes estimated to show circadian expression in the skin, metalloproteinase inhibitor 3 (TIMP3), has a rhythmic expression in synchronized human keratinocytes similar to that of the core clock gene PER1 and an epidermal circadian regulatory gene, aquaporin 3 (AQP3) but was antiphase to the core clock gene BMAL1. Tumor necrosis factor-α (TNF-α), the regulatory target of TIMP3 via a disintegrin and metalloproteinase domain 17 (ADAM17), was inversely regulated when TIMP3 expression was downregulated by ultraviolet B (UVB) treatment. When synthetic TIMP3 peptides were applied to the cells, the secretion of TNF-α did not increase following the UVB treatment. Similar to TIMP3 peptides, Camellia sinensis leaf-derived extracts showed a distinguishing efficacy in recovering TIMP3 expression, downregulated by UVB treatment. Together, our results suggest that TIMP3 reversely mediates UVR-induced inflammation by being highly expressed during the daytime; therefore, recovering the circadian expression of TIMP3 using synthetic TIMP3 peptides or bioactive natural ingredients could at least in part inhibit the UVR-induced cellular phenomena.
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Affiliation(s)
- Sunyoung Park
- Basic Research & Innovation Division, R&D Unit, AmorePacific Corporation, 1920 Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Korea.
| | - Eun-Soo Lee
- Basic Research & Innovation Division, R&D Unit, AmorePacific Corporation, 1920 Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Korea.
| | - Nok-Hyun Park
- Basic Research & Innovation Division, R&D Unit, AmorePacific Corporation, 1920 Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Korea.
| | - Kyeonghwan Hwang
- Basic Research & Innovation Division, R&D Unit, AmorePacific Corporation, 1920 Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Korea.
| | - Eun-Gyung Cho
- Basic Research & Innovation Division, R&D Unit, AmorePacific Corporation, 1920 Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Korea.
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The Impact of Ramadan Fasting on the Reduction of PASI Score, in Moderate-To-Severe Psoriatic Patients: A Real-Life Multicenter Study. Nutrients 2019; 11:nu11020277. [PMID: 30691245 PMCID: PMC6412911 DOI: 10.3390/nu11020277] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 12/21/2022] Open
Abstract
Fasting during the month of Ramadan consists of alternate abstinence and re-feeding periods (circadian or intermittent fasting). Nothing is currently known on the impact of this kind of fasting on psoriasis. A sample of 108 moderate-to-severe plaque psoriasis patients (aged 42.84 ± 13.61 years, 62 males, 46 females) volunteered to take part in the study. A significant decrease in the “Psoriasis Area and Severity Index” (PASI) score after the Ramadan fasting (mean difference = −0.89 ± 1.21, p < 0.0001) was found. At the multivariate regression, the use of cyclosporine (p = 0.0003), interleukin-17 or IL-17 blockers (p < 0.0001), and tumor necrosis factor or TNF blockers (p = 0.0107) was independently associated with a low PASI score, while the use of apremilast (p = 0.0009), and phototherapy (p = 0.0015) was associated with a high PASI score before the Ramadan fasting. Similarly, the consumption of cyclosporine (p < 0.0001), IL-17 blockers (p < 0.0001), mammalian target of rapamycin or mTOR inhibitors (p = 0.0081), and TNF blockers (p = 0.0017) predicted a low PASI score after the Ramadan fasting. By contrast, narrow band ultraviolet light B or NB-UVB (p = 0.0015) was associated with a high PASI score after Ramadan fasting. Disease duration (p = 0.0078), use of apremilast (p = 0.0005), and of mTOR inhibitors (p = 0.0034) were independent predictors of the reduction in the PASI score after the Ramadan fasting. These findings reflect the influence of dieting strategy, the biological clock, and circadian rhythm on the treatment of plaque psoriasis.
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Vieyra-Garcia PA, Wolf P. From Early Immunomodulatory Triggers to Immunosuppressive Outcome: Therapeutic Implications of the Complex Interplay Between the Wavebands of Sunlight and the Skin. Front Med (Lausanne) 2018; 5:232. [PMID: 30250844 PMCID: PMC6139367 DOI: 10.3389/fmed.2018.00232] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/30/2018] [Indexed: 12/20/2022] Open
Abstract
Phototherapy is an efficient treatment for many cutaneous diseases that involve the activation of inflammatory pathways or the overgrowth of cells with aberrant phenotype. In this review, we discuss recent advances in photoimmunology, focusing on the effects of UV-based therapies currently used in dermatology. We describe the molecular responses to the main forms of photo(chemo)therapy such as UVB, UVA-1, and PUVA that include the triggering of apoptotic or immunosuppressive pathways and help to clear diseased skin. The early molecular response to UV involves DNA photoproducts, the isomerization of urocanic acid, the secretion of biophospholipids such as platelet activating factor (PAF), the activation of aryl hydrocarbon receptor and inflammasome, and vitamin D synthesis. The simultaneous and complex interaction of these events regulates the activity of the immune system both locally and systemically, resulting in apoptosis of neoplastic and/or benign cells, reduction of cellular infiltrate, and regulation of cytokines and chemokines. Regulatory T-cells and Langerhans cells, among other skin-resident cellular populations, are deeply affected by UV exposure and are therefore important players in the mechanisms of immunomodulation and the therapeutic value of UV in all its forms. We weigh the contribution of these cells to the therapeutic application of UV and how they may participate in transferring the direct impact of UV on the skin into local and systemic immunomodulation. Moreover, we review the therapeutic mechanisms revealed by clinical and laboratory animal investigations in the most common cutaneous diseases treated with phototherapy such as psoriasis, atopic dermatitis, vitiligo, and cutaneous T-cell lymphoma. Better understanding of phototherapeutic mechanisms in these diseases will help advance treatment in general and make future therapeutic strategies more precise, targeted, personalized, safe, and efficient.
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Affiliation(s)
| | - Peter Wolf
- Department of Dermatology, Medical University of Graz, Graz, Austria
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Abstract
Circadian rhythms are a ubiquitous feature of virtually all living organisms, regulating a wide diversity of physiological systems. It has long been established that the circadian clockwork plays a key role in innate immune responses, and recent studies reveal that several aspects of adaptive immunity are also under circadian control. We discuss the latest insights into the genetic and biochemical mechanisms linking immunity to the core circadian clock of the cell and hypothesize as to why the immune system is so tightly controlled by circadian oscillations. Finally, we consider implications for human health, including vaccination strategies and the emerging field of chrono-immunotherapy.
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Affiliation(s)
- Christoph Scheiermann
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University Munich, Biomedical Centre, Planegg, Martinsried, Germany.
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany.
| | - Julie Gibbs
- School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Louise Ince
- Walter Brendel Centre of Experimental Medicine, University Hospital, Ludwig-Maximilians-University Munich, Biomedical Centre, Planegg, Martinsried, Germany
| | - Andrew Loudon
- School of Medical Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
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46
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Yoshioka D, Ando H, Ushijima K, Kumazaki M, Fujimura A. Chronotherapy of maxacalcitol on skin inflammation induced by topical 12-O-tetradecanoylphorbol-13-acetate in mice. Chronobiol Int 2018; 35:1269-1280. [PMID: 29775091 DOI: 10.1080/07420528.2018.1474890] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In general, chronotherapy is desirable for a more effective and/or safe dosage regimen. In this study, a daily rhythm of skin vitamin D receptor (VDR) and chronotherapeutic profiles of maxacalcitol, a vitamin D analogue, were evaluated using mice with skin inflammation induced by topical 12-O-tetradecanoylphorbol-13-acetate (TPA). This study showed that skin nuclear VDR expression in TPA-treated mice has a daily rhythm with the peak at the middle of active period. The effects of maxacalcitol were greater after dosing during early to middle of active period than those after dosing during early to middle of inactive period. These data suggest that chronotherapeutic profiles of maxacalcitol partly depend on the daily rhythm of skin nuclear VDR in TPA-treated mice. Because TPA-treated mice are considered as one of animal models of psoriasis, these animal data might be helpful for establishing chronotherapeutic approach of maxacalcitol in clinical practice.
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Affiliation(s)
- Daisuke Yoshioka
- a Division of Clinical Pharmacology, Department of Pharmacology , Jichi Medical University , Tochigi , Japan
| | - Hitoshi Ando
- b Department of Cellular and Molecular Function Analysis , Graduate School of Medical Sciences, Kanazawa University , Ishikawa , Japan
| | - Kentaro Ushijima
- a Division of Clinical Pharmacology, Department of Pharmacology , Jichi Medical University , Tochigi , Japan
| | - Masafumi Kumazaki
- a Division of Clinical Pharmacology, Department of Pharmacology , Jichi Medical University , Tochigi , Japan
| | - Akio Fujimura
- a Division of Clinical Pharmacology, Department of Pharmacology , Jichi Medical University , Tochigi , Japan
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Baek C, Park JB, Lee K, Jung J. The association between Korean employed workers' on-call work and health problems, injuries. Ann Occup Environ Med 2018; 30:19. [PMID: 29581881 PMCID: PMC5861623 DOI: 10.1186/s40557-018-0225-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 02/13/2018] [Indexed: 11/10/2022] Open
Abstract
Background On-call work is a form of work that requires the person to work at any time during the on-call period. Thus, on-call work is often regarded as one of the most severe stress factors. This study investigates the associations between on-call work and health problems, injuries. Methods This study was based on the 3rd Korean Working Conditions Survey. Total of 29,246 employed workers who had been working for at least 1 year were included. Logistic regression analysis was performed to investigate the association between on-call work and health problems, injuries. Results The odds ratios for on-call workers in terms of physical health problems, psychological health problems, and injuries were 1.33 (95% confidence interval [CI] 1.22-1.44), 1.31 (95% CI 1.08-1.60), and 2.76 (95% CI 2.26-3.37), respectively. Analysis of the detailed symptoms revealed odds ratios in on-call workers of 2.06 for hearing problems (95% CI 1.63-2.62); 1.71 for skin problems (95% CI 1.38-2.12); 1.22 for back pain (95% CI 1.08-1.38); 1.23 for muscular pains in upper limbs (95% CI 1.12-1.34); 1.27 for muscular pains in lower limbs (95% CI 1.15-1.40); 1.46 for headache, eye fatigue (95% CI 1.32-1.60); 1.37 for abdominal pain (95% CI 1.02-1.85); 1.43 for depression or anxiety disorders (95% CI 1.07-1.93); 1.36 for fatigue (95% CI 1.24-1.49); and 1.41 for insomnia and general sleep difficulties (95% CI 1.13-1.76). Conclusions The present study found that on-call work results in an increased risk of health problems and injuries. This study is the result of analyses of broad range of the job spectrum in Korean employed workers; thus, future studies are necessary to determine the effects of on-call work in various job groups.
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Affiliation(s)
- Chulin Baek
- 1Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea
| | - Jae Bum Park
- 2Department of Occupational and Environmental Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - Kyungjong Lee
- 2Department of Occupational and Environmental Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - Jaehyuk Jung
- 1Department of Occupational and Environmental Medicine, Ajou University Hospital, Suwon, South Korea
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[Daily Life Style and Psoriasis]. J UOEH 2018; 40:77-82. [PMID: 29553077 DOI: 10.7888/juoeh.40.77] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Skin is an important organ that is located on the outermost layer of the human body, and serves as a defense barrier against external stimulation. Daily life style, including diet, exercise, and sleep, is a fundamental behavior of humans, and it has recently been reported that daily life style has a strong relationship with the inflammatory condition of skin diseases. This relationship has been examined by various approaches, including epidemiological investigations. Psoriasis is one inflammatory skin disease and is especially closely related with daily life style, such as diet, sleep, smoking and alcohol consumption. The interleukin (IL)-23/IL-17 axis plays an important role in the pathogenesis of psoriasis, and daily life style is considered to affect this cascade, leading to exacerbation of the inflammatory condition. In this review article, we report how daily life style affects psoriasis.
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Paganelli R, Petrarca C, Di Gioacchino M. Biological clocks: their relevance to immune-allergic diseases. Clin Mol Allergy 2018; 16:1. [PMID: 29344005 PMCID: PMC5763605 DOI: 10.1186/s12948-018-0080-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 01/02/2018] [Indexed: 01/24/2023] Open
Abstract
The 2017 Nobel Prize for Physiology or Medicine, awarded for the discoveries made in the past 15 years on the genetic and molecular mechanisms regulating many physiological functions, has renewed the attention to the importance of circadian rhythms. These originate from a central pacemaker in the suprachiasmatic nucleus in the brain, photoentrained via direct connection with melanopsin containing, intrinsically light-sensitive retinal ganglion cells, and it projects to periphery, thus creating an inner circadian rhythm. This regulates several activities, including sleep, feeding times, energy metabolism, endocrine and immune functions. Disturbances of these rhythms, mainly of wake/sleep, hormonal secretion and feeding, cause decrease in quality of life, as well as being involved in development of obesity, metabolic syndrome and neuropsychiatric disorders. Most immunological functions, from leukocyte numbers, activity and cytokine secretion undergo circadian variations, which might affect susceptibility to infections. The intensity of symptoms and disease severity show a 24 h pattern in many immunological and allergic diseases, including rheumatoid arthritis, bronchial asthma, atopic eczema and chronic urticaria. This is accompanied by altered sleep duration and quality, a major determinant of quality of life. Shift work and travel through time zones as well as artificial light pose new health threats by disrupting the circadian rhythms. Finally, the field of chronopharmacology uses these concepts for delivering drugs in synchrony with biological rhythms.
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Affiliation(s)
- Roberto Paganelli
- 1Dipartimento di Medicina e Scienze dell'invecchiamento, Università "G. d'Annunzio" of Chieti-Pescara, Via dei Vestini, 5, 66013 Chieti, Italy.,Ce.S.I.-Me.T., Chieti, Italy
| | - Claudia Petrarca
- 1Dipartimento di Medicina e Scienze dell'invecchiamento, Università "G. d'Annunzio" of Chieti-Pescara, Via dei Vestini, 5, 66013 Chieti, Italy.,Ce.S.I.-Me.T., Chieti, Italy
| | - Mario Di Gioacchino
- 1Dipartimento di Medicina e Scienze dell'invecchiamento, Università "G. d'Annunzio" of Chieti-Pescara, Via dei Vestini, 5, 66013 Chieti, Italy.,Ce.S.I.-Me.T., Chieti, Italy
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Park S, Kim K, Bae IH, Lee SH, Jung J, Lee TR, Cho EG. TIMP3 is a CLOCK-dependent diurnal gene that inhibits the expression of UVB-induced inflammatory cytokines in human keratinocytes. FASEB J 2018; 32:1510-1523. [PMID: 29180440 PMCID: PMC5892724 DOI: 10.1096/fj.201700693r] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
As the outermost physical barrier of an organism, the skin is diurnally exposed to UV radiation (UVR). Recent studies have revealed that the skin exhibits a circadian rhythm in various functions, and this oscillation is disturbed and reset via a strong environmental cue, the UVR. However, a molecular link between circadian perturbation by UVR and UVR-induced cellular responses has not been investigated. We identified tissue inhibitor of metalloproteinase (TIMP)-3 as a novel circadian locomotor output cycles kaput (CLOCK)–dependent diurnal gene by using a CLOCK-knockdown strategy in human keratinocytes. Among dozens of identified transcripts down-regulated by CLOCK knockdown, TIMP3 displayed a rhythmic expression in a CLOCK-dependent manner, in which the expression of matrix metalloproteinase (MMP)-1 and inflammatory cytokines, such as TNF-α, chemokine (C-X-C motif) ligand (CXCL)-1, and IL-8, were inversely regulated. Upon UVB exposure, the expression of CLOCK and TIMP3 was down-regulated, which led to an up-regulation of secretion of MMP1 and TNF-α proteins and in the transcription of CXCL1 and IL-8via CCAAT-enhancer binding protein (C/EBP)-α. UVB-induced TNF-α secretion increased further or decreased by knockdown or overexpression of TIMP3, respectively, as well as by CLOCK. As a novel CLOCK-dependent diurnal gene, TIMP3 inhibits the expression of inflammatory cytokines that are up-regulated by UV irradiation in human keratinocytes. Thus, our work suggests a molecular link between circadian perturbation by UVR and UVR-induced inflammation.—Park, S., Kim, K., Bae, I.-H., Lee, S. H., Jung, J., Lee, T. R., Cho, E.-G. TIMP3 is a CLOCK-dependent diurnal gene that inhibits the expression of UVB-induced inflammatory cytokines in human keratinocytes.
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Affiliation(s)
- Sunyoung Park
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Kyuhan Kim
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Il-Hong Bae
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Sung Hoon Lee
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Jiyong Jung
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Tae Ryong Lee
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
| | - Eun-Gyung Cho
- Basic Research and Innovation Division, Research and Development Unit, AmorePacific Corporation, Yongin-si, South Korea
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