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Nobeyama Y. Rosacea in East Asian populations: Clinical manifestations and pathophysiological perspectives for accurate diagnosis. J Dermatol 2024. [PMID: 39126257 DOI: 10.1111/1346-8138.17411] [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: 06/20/2024] [Revised: 07/13/2024] [Accepted: 07/21/2024] [Indexed: 08/12/2024]
Abstract
Rosacea is a chronic inflammatory disorder primarily affecting the facial skin, prominently involving the cheeks, nose, chin, forehead, and periorbital area. Cutaneous manifestations encompass persistent facial erythema, phymas, papules, pustules, telangiectasia, and flushing. The pathogenesis of rosacea is associated with various exacerbating or triggering factors, including microbial infestation, temperature fluctuations, sunlight exposure, physical exertion, emotional stress, consumption of hot beverages and spicy foods, and exposure to airborne pollen. These environmental factors interact with genetic predispositions in the development of rosacea. The roles of the lipophilic microbiome, ultraviolet radiation, nociceptive responses, and vascular alterations have been proposed as significant factors in the pathogenesis. These insights contribute to understanding the anatomical specificity of facial involvement and the progressive nature of rosacea. East Asian skin, predominantly classified as Fitzpatrick skin phototypes III to IV, is characterized by relatively diminished skin barrier function and increased sensitivity to irritants. Airborne pollen exposure may particularly act as a trigger in East Asian individuals, possibly mediated through toll-like receptors. The lack of specificity in objective clinical and histopathological findings leads to diagnostic challenges for individuals with colored skin, including East Asians, particularly when erythema is the sole objective manifestation. An alternative diagnostic scheme may thus be necessary. A diagnostic approach emphasizing vascular manifestations and nociceptive symptoms potentially holds promise for individuals with darker skin tones. More research focusing on potential variations in skin physiology across different racial groups is essential to establish more effective diagnostic schemes applicable to both dark and light skin colors.
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Affiliation(s)
- Yoshimasa Nobeyama
- Department of Dermatology, The Jikei University School of Medicine, Tokyo, Japan
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2
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Roy S, Roy S, Banerjee M, Madbhagat P, Chande A, Ukil A. Antileishmanial Activity of Cathelicidin and its Modulation by Leishmania donovani in a cAMP Response Element Modulator-Dependent Manner in Infection. J Infect Dis 2024; 230:172-182. [PMID: 39052704 DOI: 10.1093/infdis/jiae158] [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: 11/06/2023] [Revised: 02/19/2024] [Accepted: 03/26/2024] [Indexed: 07/27/2024] Open
Abstract
Concerns regarding toxicity and resistance of current drugs in visceral leishmaniasis have been reported. Antimicrobial peptides are considered to be promising candidates and among them human cathelicidin hCAP18/LL-37 showed significant parasite killing on drug-sensitive and resistant Leishmania promastigotes, in addition to its apoptosis-inducing role. Administration of hCAP18/LL-37 to infected macrophages also decreased parasite survival and increased the host favorable cytokine interleukin 12. However, 1,25-dihydroxyvitamin D3 (vitamin D3)-induced endogenous hCAP18/LL-37 production was hampered in infected THP-1 cells. Infection also suppressed the vitamin D3 receptor (VDR), transcription factor of hCAP18/LL-37. cAMP response element modulator (CREM), the repressor of VDR, was induced in infection, resulting in suppression of both VDR and cathelicidin expression. PGE2/cAMP/PKA axis was found to regulate CREM induction during infection and silencing CREM in infected cells and BALB/c mice led to decreased parasite survival. This study documents the antileishmanial potential of cathelicidin and further identifies CREM as a repressor of cathelicidin in Leishmania infection.
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Affiliation(s)
- Shalini Roy
- Department of Biochemistry, University of Calcutta, Kolkata, India
| | - Souravi Roy
- Department of Biochemistry, University of Calcutta, Kolkata, India
| | | | - Pratibha Madbhagat
- Molecular Virology Laboratory, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Ajit Chande
- Molecular Virology Laboratory, Indian Institute of Science Education and Research Bhopal, Bhopal, India
| | - Anindita Ukil
- Department of Biochemistry, University of Calcutta, Kolkata, India
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Krajewski PK, Szukała W, Szepietowski JC. The NLRP3 Inflammasome Gene Is Overexpressed in Hidradenitis Suppurativa Lesions: A Preliminary Study on the Role of Pyroptosis in Disease Pathogenesis. Curr Issues Mol Biol 2024; 46:2544-2552. [PMID: 38534777 DOI: 10.3390/cimb46030161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/07/2024] [Accepted: 03/14/2024] [Indexed: 03/28/2024] Open
Abstract
Hidradenitis suppurativa (HS) is a debilitating inflammatory skin disorder, and its pathogenesis remains incompletely understood. This study aimed to investigate the role of the P2X7 receptor (P2X7R) and NLRP3 inflammasome in HS pathogenesis. RNA sequencing and real-time PCR were performed to assess the gene expression levels of P2X7R and NLRP3 in the skin biopsies of HS patients and healthy controls (HC). The results of our study revealed a significantly increased expression of the NLRP3 gene in both the lesional and perilesional skin of HS patients compared to healthy controls. Moreover, the mRNA levels of NLRP3 were significantly higher in lesional skin compared to non-lesional skin in HS patients, indicating the spread of inflammation to adjacent tissues. In contrast, no significant differences in P2X7R gene expression were observed between the three groups. These findings suggest the involvement of NLRP3 inflammasomes in HS pathogenesis, while P2X7R may not play a significant role in the disease. This research sheds light on the complex inflammatory pathways in HS, highlighting the potential of NLRP3 as a therapeutic target. Understanding the molecular mechanisms underlying HS is crucial for the development of targeted treatment modalities for this debilitating condition.
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Affiliation(s)
- Piotr K Krajewski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368 Wroclaw, Poland
| | - Weronika Szukała
- Doctoral School of Exact and Natural Sciences, Jagiellonian University, Lojasiewicza 11, 30-348 Krakow, Poland
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Jacek C Szepietowski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368 Wroclaw, Poland
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Geng RSQ, Bourkas AN, Mufti A, Sibbald RG. Rosacea: Pathogenesis and Therapeutic Correlates. J Cutan Med Surg 2024; 28:178-189. [PMID: 38450615 PMCID: PMC11015710 DOI: 10.1177/12034754241229365] [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] [Indexed: 03/08/2024]
Abstract
Rosacea is a chronic inflammatory condition of which there is no cure. The pathogenesis of rosacea is likely multifactorial, involving genetic and environmental contributions. Current understanding suggests that pro-inflammatory pathways involving cathelicidins and inflammasome complexes are central to rosacea pathogenesis. Common rosacea triggers modulate these pathways in a complex manner, which may contribute to the varying severity and clinical presentations of rosacea. Established and emerging rosacea treatments may owe their efficacy to their ability to target different players in these pro-inflammatory pathways. Improving our molecular understanding of rosacea will guide the development of new therapies and the use of combination therapies.
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Affiliation(s)
- Ryan S. Q. Geng
- Temerty School of Medicine, University of Toronto, Toronto, ON, Canada
| | | | - Asfandyar Mufti
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - R. Gary Sibbald
- Temerty School of Medicine, University of Toronto, Toronto, ON, Canada
- Dalla Lana School of Public Health and Division of Dermatology, Department of Medicine, University of Toronto, Toronto, ON, Canada
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Sánchez-Pellicer P, Eguren-Michelena C, García-Gavín J, Llamas-Velasco M, Navarro-Moratalla L, Núñez-Delegido E, Agüera-Santos J, Navarro-López V. Rosacea, microbiome and probiotics: the gut-skin axis. Front Microbiol 2024; 14:1323644. [PMID: 38260914 PMCID: PMC10800857 DOI: 10.3389/fmicb.2023.1323644] [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: 10/18/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
Rosacea is an inflammatory skin disease involving diverse symptoms with a variable clinical progress which can severely impact the patient's quality of life as well as their mental health. The pathophysiological model of rosacea involves an unbalanced immune system predisposed to excessive inflammation, in addition to vascular and nervous alterations, being certain cutaneous microorganisms' triggers of the symptoms onset. The gut-skin axis explains a bidirectional interaction between skin and gut microbiota in some inflammatory skin diseases such as atopic dermatitis, psoriasis, or rosacea. The introduction and consolidation of the next-generation sequencing in recent years has provided unprecedented information about the microbiome. However, the characterization of the gut and skin microbiota and the impact of the gut-skin axis in patients with rosacea has been little explored, in contrast to other inflammatory skin diseases such as atopic dermatitis or psoriasis. Furthermore, the clinical evolution of patients with rosacea is not always adequate and it is common for them to present a sustained symptomatology with frequent flare-ups. In this context, probiotic supplementation could improve the clinical evolution of these patients as happens in other pathologies. Through this review we aim to establish and compile the basics and directions of current knowledge to understand the mechanisms by which the microbiome influences the pathogenesis of rosacea, and how modulation of the skin and gut microbiota could benefit these patients.
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Affiliation(s)
- Pedro Sánchez-Pellicer
- MiBioPath Research Group, Faculty of Medicine, Catholic University of Murcia (UCAM), Guadalupe, Spain
| | | | | | - Mar Llamas-Velasco
- Department of Dermatology, Hospital Universitario de La Princesa, Madrid, Spain
| | - Laura Navarro-Moratalla
- MiBioPath Research Group, Faculty of Medicine, Catholic University of Murcia (UCAM), Guadalupe, Spain
| | - Eva Núñez-Delegido
- MiBioPath Research Group, Faculty of Medicine, Catholic University of Murcia (UCAM), Guadalupe, Spain
| | - Juan Agüera-Santos
- MiBioPath Research Group, Faculty of Medicine, Catholic University of Murcia (UCAM), Guadalupe, Spain
| | - Vicente Navarro-López
- MiBioPath Research Group, Faculty of Medicine, Catholic University of Murcia (UCAM), Guadalupe, Spain
- Infectious Diseases Unit, Department of Internal Medicine, University Hospital of Vinalopó-Fisabio, Elche, Spain
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Fisher GW, Travers JB, Rohan CA. Rosacea pathogenesis and therapeutics: current treatments and a look at future targets. Front Med (Lausanne) 2023; 10:1292722. [PMID: 38193038 PMCID: PMC10773789 DOI: 10.3389/fmed.2023.1292722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/28/2023] [Indexed: 01/10/2024] Open
Abstract
Rosacea is a chronic inflammatory skin condition associated with a significant health and economic burden from costs and loss of productivity due to seeking medical treatment. The disease encompasses multiple phenotypic manifestations involving a complex and multi-variate pathogenesis. Although the pathophysiology of rosacea is not completely understood, ongoing research is continually elucidating its mechanisms. In this review, current concepts of rosacea pathogenesis will be addressed which involve skin barrier and permeability dysfunction, the innate and adaptive immune systems, and the neurovascular system. More specifically, the cathelicidin pathway, transient potential receptor channels, mast cells, and the NLRP3 inflammasome pathway are various targets of current pharmacologic regimens. Future therapies may seek different mechanisms to act on current treatment targets, like the potential use of JAK/STAT inhibitors in ameliorating skin barrier dysfunction or TLR antagonists in alleviating cathelicidin mediated inflammation. Other potential treatments aim for entirely different molecular targets such as microvesicle particle mediated local and systemic inflammation. Ultimately rosacea is associated with a significant health and economic burden which warrants deeper research into its pathogenesis and resultant new treatment discovery.
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Affiliation(s)
- Garrett W. Fisher
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
| | - Jeffrey B. Travers
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Department of Medicine (Dermatology), Dayton Veterans Administration Medical Center, Dayton, OH, United States
| | - Craig A. Rohan
- Departments of Pharmacology and Toxicology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Dermatology, Boonshoft School of Medicine at Wright State University, Dayton, OH, United States
- Department of Medicine (Dermatology), Dayton Veterans Administration Medical Center, Dayton, OH, United States
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Jun YK, Yu DA, Han YM, Lee SR, Koh SJ, Park H. The Relationship Between Rosacea and Inflammatory Bowel Disease: A Systematic Review and Meta-analysis. Dermatol Ther (Heidelb) 2023:10.1007/s13555-023-00964-6. [PMID: 37338720 DOI: 10.1007/s13555-023-00964-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Accepted: 06/07/2023] [Indexed: 06/21/2023] Open
Abstract
INTRODUCTION Rosacea and inflammatory bowel disease (IBD) are chronic inflammatory disorders of the skin and the gut, which are interfaces between the environment and the human body. Although growing evidence has implicated a possible link between rosacea and IBD, it remains unclear whether IBD increases the risk of rosacea and vice versa. Therefore, we investigated the association between rosacea and IBD in this study. METHODS We performed a systematic review and meta-analysis according to the Preferred Reporting Items for Systematic Review and Meta-analysis (PRISMA) guidelines. RESULTS Eight eligible studies were included in this meta-analysis. Overall, the prevalence of rosacea was higher in the IBD group than in the control group, with a pooled odds ratio (OR) of 1.86 (95% confidence interval [CI](1), 1.52-2.26). Both the Crohn's disease and the ulcerative colitis groups had higher prevalences of rosacea than the control group, with ORs of 1.74 (95% CI 1.34-2.28) and 2.00 (95% CI 1.63-2.45), respectively. Compared with those in the control group, the risks of IBD, Crohn's disease, and ulcerative colitis were significantly higher in the rosacea group, with incidence rate ratios of 1.37 (95% CI 1.22-1.53), 1.60 (95% CI 1.33-1.92), and 1.26 (95% CI 1.09-1.45), respectively. CONCLUSION Our meta-analysis suggests that IBD is bidirectionally associated with rosacea. Future interdisciplinary studies are needed to better understand the mechanism of interaction between rosacea and IBD .
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Affiliation(s)
- Yu Kyung Jun
- Division of Gastroenterology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, 101 Daehak-ro Jongno-gu, Seoul, 03080, Korea
- Laboratory of Intestinal Mucosa and Skin Immunology, Seoul National University College of Medicine, Seoul, Korea
| | - Da-Ae Yu
- Department of Dermatology, Konkuk University School of Medicine, Seoul, Korea
| | - Yoo Min Han
- Department of Internal Medicine and Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, 101 Daehak-ro Jongno-gu, Seoul, 03080, Korea
| | - Soo Ran Lee
- Department of Dermatology, SMG-SNU Boramae Medical Center, 20 Boramaero-5-gil, Dongjak-gu, Seoul, 07061, Korea
| | - Seong-Joon Koh
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, 101 Daehak-ro Jongno-gu, Seoul, 03080, Korea.
- Laboratory of Intestinal Mucosa and Skin Immunology, Seoul National University College of Medicine, Seoul, Korea.
| | - Hyunsun Park
- Department of Dermatology, SMG-SNU Boramae Medical Center, 20 Boramaero-5-gil, Dongjak-gu, Seoul, 07061, Korea.
- Laboratory of Intestinal Mucosa and Skin Immunology, Seoul National University College of Medicine, Seoul, Korea.
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Wang J, Sun Y, Chen L, Wang Y, Shi D, Wu Y, Gao X. Supramolecular salicylic acid ameliorates rosacea-like eruptions by suppressing NLRP3-mediated inflammasome activation in mice. Int Immunopharmacol 2023; 118:110057. [PMID: 36989903 DOI: 10.1016/j.intimp.2023.110057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/15/2023] [Accepted: 03/16/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND Rosacea is a chronic inflammatory skin disease with immunological dysfunction. Supramolecular salicylic acid (SSA) has the properties of keratolytic, antibacterial, and anti-inflammatory. However, the mechanism of SSA in the treatment of rosacea is still unclear. OBJECTIVE To investigate the efficiencies and molecular mechanisms of SSA in rosacea. METHODS Forty mice were randomly divided into four groups (10 in each group): control, LL-37, LL-37 + azelaic acid (AzA), and LL-37 + SSA. Forty μl LL-37 (320 μM) was administered intradermally into the dorsal skin of the mice in the latter 3 groups every 12 h and 4 times altogether (0 h, 12 h, 24 h, 36 h). Twenty % AzA was applied on the eruptions after the first and third LL-37 injection (0 h, 24 h) in LL-37 + AzA group, while 30 % SSA was applied after the first injection (0 h) in LL-37 + SSA group. The redness score and redness area were evaluated. The skin barrier function was measured by the transepidermal water loss (TEWL) and pH. The infiltration of inflammatory cells was evaluated by hematoxylin-eosin staining, and the inflammatory biomarkers were analyzed by RT-PCR and immunohistochemistry. RESULTS SSA alleviated LL-37-induced rosacea-like inflammation. The increased TEWL and pH induced by LL-37 were also reversed by SSA. In addition, SSA reduced inflammatory cell infiltration and suppressed the production of Toll-like receptor 2, Matrix metallopeptidase 9, kallikrein 5, LL-37 associated with rosacea, and inhibited LL-37-induced NOD-like receptor family, pyrin domain containing 3 (NLRP3)-mediated inflammasome activation in mice. CONCLUSIONS Our findings indicated that SSA ameliorated LL-37-induced rosacea-like lesions by suppressing NLRP3-mediated inflammasome activation in mice.
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Affiliation(s)
- JingYu Wang
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Yan Sun
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China.
| | - LiangHong Chen
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China; Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - YiChong Wang
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China
| | - DongXin Shi
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China
| | - Yan Wu
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China.
| | - XingHua Gao
- Department of Dermatology, The First Hospital of China Medical University, Shenyang, China; NHC Key Laboratory of Immunodermatology, Ministry of Education Key Laboratory of Immunodermatology, National Joint Engineering Research Center for Diagnosis and Treatment of Immunologic Skin Diseases, The First Hospital of China Medical University, Shenyang, China
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Hu XM, Li ZX, Zhang DY, Yang YC, Zheng SY, Zhang Q, Wan XX, Li J, Yang RH, Xiong K. Current research and clinical trends in rosacea pathogenesis. Heliyon 2022; 8:e10874. [PMID: 36276718 PMCID: PMC9578998 DOI: 10.1016/j.heliyon.2022.e10874] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/30/2022] [Accepted: 09/27/2022] [Indexed: 11/05/2022] Open
Abstract
Background Rosacea is a common and complex chronic inflammatory skin disorder, the pathophysiology and etiology of which remain unclear. Recently, significant new insights into rosacea pathogenesis have enriched and reshaped our understanding of the disorder. A systematic analysis based on current studies will facilitate further research on rosacea pathogenesis. Objective To establish an international core outcome and knowledge system of rosacea pathogenesis and develop a challenge, trend and hot spot analysis set for research and clinical studies on rosacea using bibliometric analysis and data mining. Methods A search of the WoS, and PubMed, MEDLINE, Embase and Cochrane collaboration databases was conducted to perform visual bibliometric and data analysis. Results A total of 2,654 studies were used for the visualization and 302 of the 6,769 outcomes for data analysis. It reveals an increased trend line in the field of rosacea, in which its fast-growing pathogenesis attracted attention closely related to risk, comorbidity and therapeutic strategies. The rosacea pathogenesis has undergone the great development on immunology, microorganisms, genes, skin barriers and neurogenetics. The major of studies have focused on immune and microorganisms. And keyword visualization and data analyses demonstrated the cross-talk between cells or each aspect of pathogenesis, such as gene-gene or gene-environment interactions, and neurological mechanisms associated with the rosacea phenotype warrant further research. Limitations Inherent limitations of bibliometrics; and reliance on research and retrospective studies. Conclusions The understanding of rosacea's pathogenesis has been significantly enhanced with the improved technology and multidisciplinary integration, but high-quality, strong evidence in favor of genomic and neurogenic requires further research combined with a better understanding of risks and comorbidities to guide clinical practice.
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Affiliation(s)
- Xi-Min Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China,Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 410013, China
| | - Zhi-Xin Li
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Dan-Yi Zhang
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Yi-Chao Yang
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Sheng-Yuan Zheng
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Qi Zhang
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 410013, China
| | - Xin-Xing Wan
- Department of Endocrinology, Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Ji Li
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 410008, China,Hunan Key Laboratory of Aging Biology, Xiangya Hospital, Central South University, Changsha, 410008, China,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China,Corresponding author.
| | - Rong-Hua Yang
- Department of Burn and Plastic Surgery, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China,Corresponding author.
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 410013, China,Hunan Key Laboratory of Ophthalmology, Xiangya Hospital, Central South University, Changsha, 410008, China,Key Laboratory of Emergency and Trauma, Ministry of Education, College of Emergency and Trauma, Hainan Medical University, Haikou, 571199, China,Corresponding author.
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10
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MAS-related G protein-coupled receptors X (MRGPRX): Orphan GPCRs with potential as targets for future drugs. Pharmacol Ther 2022; 238:108259. [DOI: 10.1016/j.pharmthera.2022.108259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/30/2022] [Accepted: 08/01/2022] [Indexed: 11/20/2022]
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Zierl S, Hildebrand JA, Guertler A, Dietrich C, Clanner-Engelshofen BM, French LE, Reinholz M. Clinical clues to identify patients with ocular rosacea - a Germany-wide epidemiologic analysis. Int J Dermatol 2022; 61:880-885. [PMID: 35579395 DOI: 10.1111/ijd.16235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 01/18/2022] [Accepted: 04/19/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Ocular rosacea is a special manifestation of rosacea with unknown etiology. Eye involvement in rosacea patients is surprisingly common; however, it is often underdiagnosed, resulting in inappropriate treatment. We aimed to provide an updated epidemiologic perspective on ocular rosacea in Germany to improve patient care. PATIENTS AND METHODS Data of 777 rosacea patients were assessed using a detailed online questionnaire regarding ocular and skin symptoms, previous dermatological and ophthalmological consults, presence of type 1 hypersensitivities, and Demodex testing. All data were statistically analyzed. RESULTS Most patients reported ocular symptoms (399/777, 51.4%), including red eyes (179/399, 44.9%), itching (187/399, 46.9%), sty or chalazion (309/399, 77.4%), and dryness (108/399, 27.1%). Ocular rosacea was confirmed in 149/309 cases who consulted an ophthalmologist (45.3%). A total of 159/399 (39.8%) had no pre-existing allergies. Eye involvement was significantly associated with the presence of skin symptoms (P < 0.05), impacting patients' general well-being and overall treatment satisfaction. About half of Demodex-positive patients (21/45, 46.7%) showed ocular symptoms. CONCLUSIONS Eye involvement in rosacea patients was common, often presenting with unspecific symptoms.
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Affiliation(s)
- Stephan Zierl
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany
| | - Johannes A Hildebrand
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany
| | - Anne Guertler
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany
| | - Cecilia Dietrich
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany
| | | | - Lars E French
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany.,Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Markus Reinholz
- Department of Dermatology and Allergy, University Hospital of Munich (LMU), Munich, Germany
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12
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Forton FM. Rosacea, an infectious disease: why rosacea with papulopustules should be considered a demodicosis. A narrative review. J Eur Acad Dermatol Venereol 2022; 36:987-1002. [DOI: 10.1111/jdv.18049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 02/22/2022] [Indexed: 11/28/2022]
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Chaki S, Alkanfari I, Roy S, Amponnawarat A, Hui Y, Oskeritzian CA, Ali H. Inhibition of Orai Channel Function Regulates Mas-Related G Protein-Coupled Receptor-Mediated Responses in Mast Cells. Front Immunol 2022; 12:803335. [PMID: 35126366 PMCID: PMC8810828 DOI: 10.3389/fimmu.2021.803335] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/28/2021] [Indexed: 11/13/2022] Open
Abstract
Mast cells (MCs) are tissue resident immune cells that play important roles in the pathogenesis of allergic disorders. These responses are mediated via the cross-linking of cell surface high affinity IgE receptor (FcϵRI) by antigen resulting in calcium (Ca2+) mobilization, followed by degranulation and release of proinflammatory mediators. In addition to FcϵRI, cutaneous MCs express Mas-related G protein-coupled receptor X2 (MRGPRX2; mouse ortholog MrgprB2). Activation of MRGPRX2/B2 by the neuropeptide substance P (SP) is implicated in neurogenic inflammation, chronic urticaria, mastocytosis and atopic dermatitis. Although Ca2+ entry is required for MRGPRX2/B2-mediated MC responses, the possibility that calcium release-activated calcium (CRAC/Orai) channels participate in these responses has not been tested. Lentiviral shRNA-mediated silencing of Orai1, Orai2 or Orai3 in a human MC line (LAD2 cells) resulted in partial inhibition of SP-induced Ca2+ mobilization, degranulation and cytokine/chemokine generation (TNF-α, IL-8, and CCL-3). Synta66, which blocks homo and hetero-dimerization of Orai channels, caused a more robust inhibition of SP-induced responses than knockdown of individual Orai channels. Synta66 also blocked SP-induced extracellular signal-regulated kinase 1/2 (ERK1/2) and Akt phosphorylation and abrogated cytokine/chemokine production. It also inhibited SP-induced Ca2+ mobilization and degranulation in primary human skin MCs and mouse peritoneal MCs. Furthermore, Synta66 attenuated both SP-induced cutaneous vascular permeability and leukocyte recruitment in mouse peritoneum. These findings demonstrate that Orai channels contribute to MRGPRX2/B2-mediated MC activation and suggest that their inhibition could provide a novel approach for the modulation of SP-induced MC/MRGPRX2-mediated disorders.
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Affiliation(s)
- Shaswati Chaki
- Department of Basic and Translational Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, United States
| | - Ibrahim Alkanfari
- Department of Basic and Translational Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, United States
- Faculty of Dentistry, King AbdulAziz University, Jeddah, Saudi Arabia
| | - Saptarshi Roy
- Department of Basic and Translational Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, United States
| | - Aetas Amponnawarat
- Department of Basic and Translational Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, United States
- Department of Family and Community Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Yvonne Hui
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Carole A. Oskeritzian
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, United States
| | - Hydar Ali
- Department of Basic and Translational Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, United States
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Cribier B. Rosacea: Treatment targets based on new physiopathology data. Ann Dermatol Venereol 2021; 149:99-107. [PMID: 34893359 DOI: 10.1016/j.annder.2021.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 06/29/2021] [Accepted: 11/09/2021] [Indexed: 11/18/2022]
Abstract
Over the past 15 years, numerous clinical, epidemiological and physiopathological articles have been published on rosacea. There is now increasing evidence that rosacea is an inflammatory disease characterised by abnormal innate immune response, major vascular changes, and increased colonisation by Demodex mites, along with a genetic predisposition and multiple external aggravating factors. It is thus possible to define treatment targets and possible treatments: 1) permanent vascular changes (medical and instrumental treatments); 2) flushing (betablockers, botulinum toxin); 3) innate immunity (antibiotics, nonspecific antioxidants and anti-inflammatory molecules); 4) a neurovascular component (analgesics, antidepressants); 5) Demodex (antiparasitic drugs); 6) microbiome; 7) skin barrier impairment (cosmetics and certain systemic drugs); 8) sebaceous glands (isotretinoin, surgery); 9) environmental factors (alcohol, coffee, UV exposure). Treatment recommendations are now available in many countries and benefit from the new phenotypic approach to rosacea, in which every sign or symptom is considered separately rather than having to deal with overlapping subtypes. Since the 2000s, many good quality clinical trials have been published in the field of rosacea and many others are still ongoing. Rosacea is a complex disease involving many different mechanisms and with numerous possible treatments, but there are still some important unmet needs with regard to optimal care.
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Affiliation(s)
- B Cribier
- Clinique Dermatologique, Hôpitaux Universitaires et Faculté de Médecine, Université de Strasbourg, 67000 Strasbourg, France.
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15
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Ferrari D, Casciano F, Secchiero P, Reali E. Purinergic Signaling and Inflammasome Activation in Psoriasis Pathogenesis. Int J Mol Sci 2021; 22:ijms22179449. [PMID: 34502368 PMCID: PMC8430580 DOI: 10.3390/ijms22179449] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 12/13/2022] Open
Abstract
Psoriasis is a chronic inflammatory disease of the skin associated with systemic and joint manifestations and accompanied by comorbidities, such as metabolic syndrome and increased risk of cardiovascular disease. Psoriasis has a strong genetic basis, but exacerbation requires additional signals that are still largely unknown. The clinical manifestations involve the interplay between dendritic and T cells in the dermis to generate a self-sustaining inflammatory loop around the TNFα/IL-23/IL-17 axis that forms the psoriatic plaque. In addition, in recent years, a critical role of keratinocytes in establishing the interplay that leads to psoriatic plaques’ formation has re-emerged. In this review, we analyze the most recent evidence of the role of keratinocytes and danger associates molecular patterns, such as extracellular ATP in the generation of psoriatic skin lesions. Particular attention will be given to purinergic signaling in inflammasome activation and in the initiation of psoriasis. In this phase, keratinocytes’ inflammasome may trigger early inflammatory pathways involving IL-1β production, to elicit the subsequent cascade of events that leads to dendritic and T cell activation. Since psoriasis is likely triggered by skin-damaging events and trauma, we can envisage that intracellular ATP, released by damaged cells, may play a role in triggering the inflammatory response underlying the pathogenesis of the disease by activating the inflammasome. Therefore, purinergic signaling in the skin could represent a new and early step of psoriasis; thus, opening the possibility to target single molecular actors of the purinome to develop new psoriasis treatments.
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Affiliation(s)
- Davide Ferrari
- Department of Life Science and Biotechnology, Section of Microbiology and Applied Pathology, University of Ferrara, 44121 Ferrara, Italy;
| | - Fabio Casciano
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (P.S.)
- Interdepartmental Research Center for the Study of Multiple Sclerosis and Inflammatory and Degenerative Diseases of the Nervous System, University of Ferrara, 44121 Ferrara, Italy
| | - Paola Secchiero
- Department of Translational Medicine and LTTA Centre, University of Ferrara, 44121 Ferrara, Italy; (F.C.); (P.S.)
| | - Eva Reali
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy
- Correspondence:
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16
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Demirbaş A, Yümer Y, Elmas ÖF, Ulutaş Demirbaş G, Atasoy M, Türsen Ü, Dursun R, Lotti T. Relationship between rosacea and chronic obstructive pulmonary disease: Rosacea and comorbidities. J Cosmet Dermatol 2021; 21:2255-2262. [PMID: 34411396 DOI: 10.1111/jocd.14389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 08/01/2021] [Accepted: 08/05/2021] [Indexed: 01/16/2023]
Abstract
BACKGROUND Rosacea is a chronic inflammatory skin disease that has been reported to be associated with many systemic disorders including respiratory diseases. AIMS This study aims to investigate respiratory function in patients with rosacea. PATIENTS/METHODS Patients with rosacea and age- and gender-matched healthy volunteers were included in this cross-sectional study. Spirometric pulmonary function tests including the percentage of forced vital capacity (FVC%), percentage of forced expiratory volume in one second (FEV 1%), forced expiratory flow at 25-75% of FVC (FEF 25-75%), and FEV 1/FVC ratio was assessed in both patient and controls. The potential relationship between rosacea severity and pulmonary functions was assessed. RESULTS A total of 120 patients with rosacea and 120 healthy controls were enrolled in the study. Compared to the controls, FEV 1%, FEV 1/FVC%, and FEF 25-75% values were significantly lower in patients with rosacea. Lower FEV 1/FVC% values were found to be associated with disease severity. FEV 1%, FEV 1/FVC%, and FEF 25-75% values were found to be more useful in differentiating the patients from healthy subjects. CONCLUSIONS This study showed that patients with rosacea may have abnormal respiratory function compared to healthy subjects. Besides, disease severity was associated with worse respiratory functions. We believe that patients with rosacea, particularly those with additional risk factors, should be screened for respiratory disorders.
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Affiliation(s)
- Abdullah Demirbaş
- Department of Dermatology, Evliya Çelebi Training and Research Hospital, Kütahya Health Sciences University, Kütahya, Turkey
| | - Yusuf Yümer
- Department of Pulmonary Diseases, Konya Numune Hospital, Konya, Turkey
| | - Ömer Faruk Elmas
- Department of Dermatology, Kırıkkale University, Kırıkkale, Turkey
| | - Gözde Ulutaş Demirbaş
- Department of Dermatology, Evliya Çelebi Training and Research Hospital, Kütahya Health Sciences University, Kütahya, Turkey
| | - Mustafa Atasoy
- Department of Dermatology, Kayseri City Hospital, Health Science University, Kayseri, Turkey
| | - Ümit Türsen
- Department of Dermatology, Mersin University, Mersin, Turkey
| | - Recep Dursun
- Department of Dermatology, Necmettin Erbakan University, Konya, Turkey
| | - Torello Lotti
- Department of Dermatology, Guglielmo Marconi University, Rome, Italy
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17
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Syed M, Kammala AK, Callahan B, Oskeritzian CA, Subramanian H. Lactic acid suppresses MRGPRX2 mediated mast cell responses. Cell Immunol 2021; 368:104422. [PMID: 34399172 DOI: 10.1016/j.cellimm.2021.104422] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 01/03/2023]
Abstract
MAS related G-protein coupled receptor X2 (MRGPRX2) is a G-protein coupled receptor (GPCR) expressed in human mast cells that has been implicated to play an important role in causing pseudo-allergic reactions as well as exacerbating inflammation during asthma and other allergic diseases. Lactic acid, a byproduct of glucose metabolism, is abundantly present in inflamed tissues and has been shown to regulate functions of several immune cells. Because the endogenous ligands for MRGPRX2 (substance P and LL-37) are elevated during pathologic conditions, such as cancer and asthma, and given that lactic acid levels are also enhanced in these patients, we explored the role of lactic acid in regulating mast cells response via MRGPRX2 and MrgprB2, the mouse orthologue of the human receptor. We found that lactic acid suppressed both the early (Ca2+ mobilization and degranulation) and late (chemokine/cytokine release) phases of mast cell activation; this data was confirmed in LAD2, human skin and mouse peritoneal mast cells. In LAD2 cells, the reduction in degranulation and chemokine/cytokine production mediated by lactic acid was dependent on pH. In agreement with our in vitro studies, lactic acid also reduced passive systemic anaphylaxis to compound 48/80 (a known MRGPRX2/MrgprB2 ligand) and skin inflammation in a mouse model of rosacea that is dependent on MrgprB2 expression on skin mast cells. Our data thus suggest that lactic acid may serve to inhibit mast cell-mediated inflammation during asthma and reduce immune response during cancer by affecting mast cell activation through MRGPRX2.
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Affiliation(s)
- Meesum Syed
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States
| | - Ananth K Kammala
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States
| | - Brianna Callahan
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States
| | - Carole A Oskeritzian
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC 29208, United States
| | - Hariharan Subramanian
- Department of Physiology, Michigan State University, East Lansing, MI 48824, United States.
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18
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Krajewski PK, Szukała W, Lichawska-Cieślar A, Matusiak Ł, Jura J, Szepietowski JC. MCPIP1/Regnase-1 Expression in Keratinocytes of Patients with Hidradenitis Suppurativa: Preliminary Results. Int J Mol Sci 2021; 22:ijms22147241. [PMID: 34298861 PMCID: PMC8307415 DOI: 10.3390/ijms22147241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 11/16/2022] Open
Abstract
The pathogenesis of hidradenitis suppurativa (HS) is yet to be fully understood. However, inflammation is a key element in the development of skin lesions. The aim of this study was to evaluate the expression of monocyte chemotactic protein-1-induced protein-1 (MCPIP1) in the skin of patients suffering from HS. Skin biopsies of 15 patients with HS and 15 healthy controls were obtained and processed for immunohistochemistry, western blot, and real time PCR. The highest mean MCPIP1 mRNA expression was found in the inflammatory lesional skin of HS patients. It was significantly higher than MCPIP1 mRNA expression in the biopsies from both healthy controls and non-lesional skin of HS patients. Western blot analysis indicated that expression of MCPIP1 was elevated within both lesional and non-lesional skin compared to the healthy control. The increased MCPIP1 mRNA and protein expression level in HS lesions may indicate its possible role in the disease pathogenesis.
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Affiliation(s)
- Piotr K. Krajewski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368 Wroclaw, Poland; (P.K.K.); (Ł.M.)
| | - Weronika Szukała
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-392 Krakow, Poland; (W.S.); (J.J.)
| | - Agata Lichawska-Cieślar
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-392 Krakow, Poland; (W.S.); (J.J.)
- Correspondence: (A.L.-C.); (J.C.S.)
| | - Łukasz Matusiak
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368 Wroclaw, Poland; (P.K.K.); (Ł.M.)
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-392 Krakow, Poland; (W.S.); (J.J.)
| | - Jacek C. Szepietowski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368 Wroclaw, Poland; (P.K.K.); (Ł.M.)
- Correspondence: (A.L.-C.); (J.C.S.)
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19
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Nucera F, Lo Bello F, Shen SS, Ruggeri P, Coppolino I, Di Stefano A, Stellato C, Casolaro V, Hansbro PM, Adcock IM, Caramori G. Role of Atypical Chemokines and Chemokine Receptors Pathways in the Pathogenesis of COPD. Curr Med Chem 2021; 28:2577-2653. [PMID: 32819230 DOI: 10.2174/0929867327999200819145327] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 11/22/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) represents a heightened inflammatory response in the lung generally resulting from tobacco smoking-induced recruitment and activation of inflammatory cells and/or activation of lower airway structural cells. Several mediators can modulate activation and recruitment of these cells, particularly those belonging to the chemokines (conventional and atypical) family. There is emerging evidence for complex roles of atypical chemokines and their receptors (such as high mobility group box 1 (HMGB1), antimicrobial peptides, receptor for advanced glycosylation end products (RAGE) or toll-like receptors (TLRs)) in the pathogenesis of COPD, both in the stable disease and during exacerbations. Modulators of these pathways represent potential novel therapies for COPD and many are now in preclinical development. Inhibition of only a single atypical chemokine or receptor may not block inflammatory processes because there is redundancy in this network. However, there are many animal studies that encourage studies for modulating the atypical chemokine network in COPD. Thus, few pharmaceutical companies maintain a significant interest in developing agents that target these molecules as potential antiinflammatory drugs. Antibody-based (biological) and small molecule drug (SMD)-based therapies targeting atypical chemokines and/or their receptors are mostly at the preclinical stage and their progression to clinical trials is eagerly awaited. These agents will most likely enhance our knowledge about the role of atypical chemokines in COPD pathophysiology and thereby improve COPD management.
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Affiliation(s)
- Francesco Nucera
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences (BIOMORF), University of Messina, Pugliatti Square 1, 98122 Messina, Italy
| | - Federica Lo Bello
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences (BIOMORF), University of Messina, Pugliatti Square 1, 98122 Messina, Italy
| | - Sj S Shen
- Faculty of Science, Centre for Inflammation, Centenary Institute, University of Technology, Ultimo, Sydney, Australia
| | - Paolo Ruggeri
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences (BIOMORF), University of Messina, Pugliatti Square 1, 98122 Messina, Italy
| | - Irene Coppolino
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences (BIOMORF), University of Messina, Pugliatti Square 1, 98122 Messina, Italy
| | - Antonino Di Stefano
- Division of Pneumology, Cyto- Immunopathology Laboratory of the Cardio-Respiratory System, Clinical Scientific Institutes Maugeri IRCCS, Veruno, Italy
| | - Cristiana Stellato
- Department of Medicine, Surgery and Dentistry, Salerno Medical School, University of Salerno, Salerno, Italy
| | - Vincenzo Casolaro
- Department of Medicine, Surgery and Dentistry, Salerno Medical School, University of Salerno, Salerno, Italy
| | - Phil M Hansbro
- Faculty of Science, Centre for Inflammation, Centenary Institute, University of Technology, Ultimo, Sydney, Australia
| | - Ian M Adcock
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Gaetano Caramori
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences (BIOMORF), University of Messina, Pugliatti Square 1, 98122 Messina, Italy
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20
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Antimicrobial Peptide LL-37 Drives Rosacea-Like Skin Inflammation in an NLRP3-Dependent Manner. J Invest Dermatol 2021; 141:2885-2894.e5. [PMID: 33745908 DOI: 10.1016/j.jid.2021.02.745] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/25/2021] [Accepted: 02/09/2021] [Indexed: 01/14/2023]
Abstract
Rosacea is a chronic inflammatory skin disease characterized by immune response-dependent erythema and pustules. Although the precise etiology of rosacea remains elusive, its pathogenesis is reportedly associated with an increased level of antimicrobial peptide LL-37. However, molecular mechanisms underlying the progression of rosacea via LL-37 remain poorly understood. Here, we examined the potential role of LL-37 in rosacea-like skin inflammatory phenotypes at a molecular level. Our in vitro data demonstrated that LL-37 promotes NLRP3-mediated inflammasome activation in lipopolysaccharide-primed macrophages, indicated by the processing of caspase-1 and IL-1β. LL-37 was internalized into the cytoplasm of macrophages through P2X7 receptor-mediated endocytosis. Intracellular LL-37 triggered the assembly and activation of NLRP3-ASC inflammasome complex by facilitating lysosomal destabilization. Consistent with these in vitro results, intradermal LL-37 administration induced in vivo caspase-1 activation and ASC speck formation in the skin of Nlrp3-expressing, but not in Nlrp3-deficient, mice. Intradermal injection of LL-37 elicited profound recruitment of inflammatory Gr1+ cells and subsequent skin inflammation. However, LL-37-induced rosacea-like skin inflammation was significantly abrogated in Nlrp3-deficient mice. Furthermore, an NLRP3-specific inhibitor, MCC950, markedly reduced LL-37-triggered rosacea-like phenotypes. Taken together, our findings clearly indicate that NLRP3 inflammasome activation plays a crucial role in LL-37-induced skin inflammation and rosacea pathogenesis.
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21
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Morgado-Carrasco D, Granger C, Trullas C, Piquero-Casals J. Impact of ultraviolet radiation and exposome on rosacea: Key role of photoprotection in optimizing treatment. J Cosmet Dermatol 2021; 20:3415-3421. [PMID: 33626227 PMCID: PMC8596706 DOI: 10.1111/jocd.14020] [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: 12/20/2020] [Revised: 02/08/2021] [Accepted: 02/15/2021] [Indexed: 12/23/2022]
Abstract
Background Pathophysiology of rosacea is not completely understood and involves a complex interaction among genetics, ultraviolet (UV) light, microorganisms, impaired skin barrier, neuronal and vascular dysfunction, and immune system disruption. Aims To describe the etiology of rosacea with an emphasis on the role of UV radiation and exposome, and to review the importance of non‐pharmacologic strategies focusing on photoprotection. Methods We conducted a narrative review of the literature. We performed literature searches with PubMed from January 1990 to November 2020 using the keywords “rosacea”, “pathogenesis”, “ultraviolet radiation”, “exposome”, “photoprotection”, “sunscreens” and “non‐pharmacologic agents”. The search was limited to English, Spanish, and French language articles. Results Several environmental factors such as UV light, diverse microorganisms, air pollution, tobacco smoking, nutrition, and psychological stress showed to trigger or worsen rosacea. UV radiation was reported to induce pro‐inflammatory, pro‐angiogenic, and pro‐fibrotic responses. We found 6 original articles about the impact of sunscreens on rosacea. The use of sunscreens containing ingredients with emollient, anti‐inflammatory, and/or vasoregulatory properties was shown to significantly improve symptomatology. Conclusion UV radiation and the exposome play a key role in the development of rosacea. UV light is implicated in all significant aspects of rosacea: skin inflammation, neoangiogenesis, telangiectasia, and fibrosis, and may even initiate rosacea. While the use of sunscreens is widely recommended, the literature on the impact of photoprotection in rosacea is scarce. Adequately formulated sunscreens could not only provide the required level of photoprotection, but may also help to mitigate the barrier dysfunction, neutralize facial redness (tinted sunscreens), and decrease inflammation and vascular dysfunction.
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Affiliation(s)
- Daniel Morgado-Carrasco
- Department of Dermatology, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
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22
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Dube U, Musiek A. SnapshotDx Quiz: January 2021. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2020.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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23
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Quemé-Peña M, Ricci M, Juhász T, Horváti K, Bősze S, Biri-Kovács B, Szeder B, Zsila F, Beke-Somfai T. Old Polyanionic Drug Suramin Suppresses Detrimental Cytotoxicity of the Host Defense Peptide LL-37. ACS Pharmacol Transl Sci 2020; 4:155-167. [PMID: 33615169 DOI: 10.1021/acsptsci.0c00155] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Indexed: 12/27/2022]
Abstract
The host defense peptide LL-37 is the only human cathelicidin, characterized by pleiotropic activity ranging from immunological to anti-neoplastic functions. However, its overexpression has been associated with harmful inflammatory responses and apoptosis. Thus, for the latter cases, the development of strategies aiming to reduce LL-37 toxicity is highly desired as these have the potential to provide a viable solution. Here, we demonstrate that the reduction of LL-37 toxicity might be achieved by the impairment of its cell surface binding through interaction with small organic compounds that are able to alter the peptide conformation and minimize its cell penetration ability. In this regard, the performed cell viability and internalization studies showed a remarkable attenuation of LL-37 cytotoxicity toward colon and monocytic cells in the presence of the polysulfonated drug suramin. The mechanistic examinations of the molecular details indicated that this effect was coupled with the ability of suramin to alter LL-37 secondary structure via the formation of peptide-drug complexes. Moreover, a comparison with other therapeutic agents having common features unveiled the peculiar ability of suramin to optimize the binding to the peptide sequence. The newly discovered suramin action is hoped to inspire the elaboration of novel repurposing strategies aimed to reduce LL-37 cytotoxicity under pathological conditions.
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Affiliation(s)
- Mayra Quemé-Peña
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Biomolecular Self-Assembly Research Group, Budapest H-1117, Hungary.,Institute of Chemistry, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Maria Ricci
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Biomolecular Self-Assembly Research Group, Budapest H-1117, Hungary
| | - Tünde Juhász
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Biomolecular Self-Assembly Research Group, Budapest H-1117, Hungary
| | - Kata Horváti
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Hungarian Academy of Sciences, Budapest H-1117, Hungary.,Institute of Chemistry, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Hungarian Academy of Sciences, Budapest H-1117, Hungary
| | - Beáta Biri-Kovács
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd University, Hungarian Academy of Sciences, Budapest H-1117, Hungary.,Institute of Chemistry, Eötvös Loránd University, Budapest H-1117, Hungary
| | - Bálint Szeder
- Institute of Enzymology, Research Centre for Natural Sciences, Budapest H-1117, Hungary
| | - Ferenc Zsila
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Biomolecular Self-Assembly Research Group, Budapest H-1117, Hungary
| | - Tamás Beke-Somfai
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Biomolecular Self-Assembly Research Group, Budapest H-1117, Hungary
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24
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The Pathogenic Role of Demodex Mites in Rosacea: A Potential Therapeutic Target Already in Erythematotelangiectatic Rosacea? Dermatol Ther (Heidelb) 2020; 10:1229-1253. [PMID: 33095403 PMCID: PMC7649190 DOI: 10.1007/s13555-020-00458-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Indexed: 12/15/2022] Open
Abstract
Rosacea is a common facial dermatosis but its definition and classification are still unclear, especially in terms of its links with demodicosis. Triggers of rosacea (ultraviolet light, heat, spicy foods, alcohol, stress, microbes) are currently considered to induce a cascading innate and then adaptive immune response that gets out of control. Recent histological and biochemical studies support the concept that this inflammatory response is a continuum, already present from the onset of the disease, even when no clinical signs of inflammation are visible. The Demodex mite is beginning to be accepted as one of the triggers of this inflammatory cascade, and its proliferation as a marker of rosacea; moreover, the papulopustules of rosacea can be effectively treated with topical acaricidal agents. Demodex proliferation appears to be a continuum process in rosacea, and may not be clinically visible at the onset of the disease. Molecular studies suggest that Demodex may induce tolerogenic dendritic cells and collaborate with vascular endothelial growth factor (VEGF) to induce T cell exhaustion and favor its own proliferation. These interactions among VEGF, Demodex, and immunity need to be explored further and the nosology of rosacea adapted accordingly. However, treating early rosacea, with only clinically visible vascular symptoms, with an acaricide may decrease early inflammation, limit potential flare-ups following laser treatment, and prevent the ultimate development of the papulopustules of rosacea. The effectiveness of this approach needs to be confirmed by prospective controlled clinical trials with long-term follow-up. Currently, the evidence suggests that patients with only vascular symptoms of rosacea should be carefully examined for the presence of follicular scales as signs of Demodex overgrowth or pityriasis folliculorum so that these patients, at least, can be treated early with an acaricidal cream.
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Harden JL, Shih YH, Xu J, Li R, Rajendran D, Hofland H, Chang ALS. Paired Transcriptomic and Proteomic Analysis Implicates IL-1β in the Pathogenesis of Papulopustular Rosacea Explants. J Invest Dermatol 2020; 141:800-809. [PMID: 32941918 DOI: 10.1016/j.jid.2020.08.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 07/30/2020] [Accepted: 08/11/2020] [Indexed: 10/23/2022]
Abstract
Papulopustular rosacea (PPR) is a chronic inflammatory skin disease with limited treatment options. Although multiple pathways have been described to be upregulated in PPR, a mechanistic understanding of the key drivers and interaction between pathways in PPR pathology is lacking. In this study, we utilized PPR skin biopsy explants to integrate both differentially expressed genes and differentially expressed proteins in paired nonlesional and lesional PPR tissue (n = 5 patients). The results of this study identified 92 differentially expressed genes and 20 differentially expressed proteins between paired PPR lesional and nonlesional explants. MAPK and TNF signaling pathways were the most significantly upregulated pathways in PPR lesional tissue and aligned with differently expressed proteins identified in this study. Both MAPK and TNF signaling pathways highlighted IL-1β as a potential central mediator for PPR pathogenesis. In support of this, stimulation of nonlesional explants with IL-1β resulted in transcriptomic and proteomic profiles similar to those of lesional PPR. In this integrative transcriptomic and quantitative protein analysis, we identified several inflammatory genes, proteins, and pathways, which may be contributing to PPR, as well as highlighted a potential role of IL-1β in driving inflammation in PPR.
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Affiliation(s)
- Jamie L Harden
- Dermira Inc, Menlo Park, California, USA; Evommune Inc, Los Altos, California, USA
| | - Yi-Hsien Shih
- Department of Dermatology, Stanford University School of Medicine, Redwood City, California, USA; Department of Dermatology, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan; Department of Dermatology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jin Xu
- Department of Dermatology, Stanford University School of Medicine, Redwood City, California, USA
| | - Rui Li
- Department of Dermatology, Stanford University School of Medicine, Redwood City, California, USA
| | | | - Hans Hofland
- Dermira Inc, Menlo Park, California, USA; Evommune Inc, Los Altos, California, USA
| | - Anne Lynn S Chang
- Department of Dermatology, Stanford University School of Medicine, Redwood City, California, USA.
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Patra V, Gallais Sérézal I, Wolf P. Potential of Skin Microbiome, Pro- and/or Pre-Biotics to Affect Local Cutaneous Responses to UV Exposure. Nutrients 2020; 12:E1795. [PMID: 32560310 PMCID: PMC7353315 DOI: 10.3390/nu12061795] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/14/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022] Open
Abstract
The human skin hosts innumerable microorganisms and maintains homeostasis with the local immune system despite the challenges offered by environmental factors such as ultraviolet radiation (UVR). UVR causes cutaneous alterations such as acute (i.e., sunburn) and chronic inflammation, tanning, photoaging, skin cancer, and immune modulation. Phototherapy on the other hand is widely used to treat inflammatory skin diseases such as psoriasis, atopic dermatitis, polymorphic light eruption and graft-versus-host disease (GvHD), as well as neoplastic skin diseases such as cutaneous T cell lymphoma, among others. Previous work has addressed the use of pro- and pre-biotics to protect against UVR through anti-oxidative, anti-inflammatory, anti-aging, anti-carcinogenic and/or pro-and contra-melanogenic properties. Herein, we discuss and share perspectives of the potential benefits of novel treatment strategies using microbes and pro- and pre-biotics as modulators of the skin response to UVR, and how they could act both for protection against UVR-induced skin damage and as enhancers of the UVR-driven therapeutic effects on the skin.
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Affiliation(s)
- VijayKumar Patra
- Center for Medical Research, Medical University of Graz, 8010 Graz, Austria;
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, 8010 Graz, Austria
| | - Irène Gallais Sérézal
- Department of Medicine, Unit of Rheumatology, Karolinska Institutet, 171 77 Solna, Sweden;
- Department of Dermatology, Besançon University Hospital, 25000 Besancon, France
| | - Peter Wolf
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, 8010 Graz, Austria
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Yang B, Good D, Mosaiab T, Liu W, Ni G, Kaur J, Liu X, Jessop C, Yang L, Fadhil R, Yi Z, Wei MQ. Significance of LL-37 on Immunomodulation and Disease Outcome. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8349712. [PMID: 32509872 PMCID: PMC7246396 DOI: 10.1155/2020/8349712] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 03/04/2020] [Accepted: 04/03/2020] [Indexed: 02/07/2023]
Abstract
LL-37, also called cathelicidin, is an important part of the human immune system, which can resist various pathogens. A plethora of experiments have demonstrated that it has the multifunctional effects of immune regulation, in addition to antimicrobial activity. Recently, there have been increasing interest in its immune function. It was found that LL-37 can have two distinct functions in different tissues and different microenvironments. Thus, it is necessary to investigate LL-37 immune functions from the two sides of the same coin. On the one side, LL-37 promotes inflammation and immune response and exerts its anti-infective and antitumor effects; on the other side, it has the ability to inhibit inflammation and promote carcinogenesis. This review presents a brief summary of its expression, structure, and immunomodulatory effects as well as brief discussions on the role of this small peptide as a key factor in the development and treatment of various inflammation-related diseases and cancers.
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Affiliation(s)
- Binbin Yang
- School of Medical Laboratory, Key Laboratory of Clinical Laboratory Diagnostics in Universities of Shandong, Weifang Medical University, Weifang 261053, China
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - David Good
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
- School of Allied Health, Australian Catholic University, Brisbane, Qld 4014, Australia
| | - Tamim Mosaiab
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
- Institute for Glycomics, Griffith University, Gold Coast, Qld 4215, Australia
| | - Wei Liu
- School of Medical Laboratory, Key Laboratory of Clinical Laboratory Diagnostics in Universities of Shandong, Weifang Medical University, Weifang 261053, China
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - Guoying Ni
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
- The First Affiliated Hospital/School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- School of Health and Sport Sciences, University of the Sunshine Coast, Maroochydore DC, Qld 4558, Australia
| | - Jasmine Kaur
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - Xiaosong Liu
- The First Affiliated Hospital/School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
- School of Health and Sport Sciences, University of the Sunshine Coast, Maroochydore DC, Qld 4558, Australia
- Cancer Research Institute, First People's Hospital of Foshan, Foshan 528000, China
| | - Calvin Jessop
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - Lu Yang
- School of Medical Laboratory, Key Laboratory of Clinical Laboratory Diagnostics in Universities of Shandong, Weifang Medical University, Weifang 261053, China
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - Rushdi Fadhil
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
| | - Zhengjun Yi
- School of Medical Laboratory, Key Laboratory of Clinical Laboratory Diagnostics in Universities of Shandong, Weifang Medical University, Weifang 261053, China
| | - Ming Q. Wei
- School of Medical Science & Menzies Health Institute Queensland, Griffith University, Gold Coast, Qld 4215, Australia
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Callahan BN, Kammala AK, Syed M, Yang C, Occhiuto CJ, Nellutla R, Chumanevich AP, Oskeritzian CA, Das R, Subramanian H. Osthole, a Natural Plant Derivative Inhibits MRGPRX2 Induced Mast Cell Responses. Front Immunol 2020; 11:703. [PMID: 32391014 PMCID: PMC7194083 DOI: 10.3389/fimmu.2020.00703] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/30/2020] [Indexed: 12/14/2022] Open
Abstract
Mast cells are tissue-resident innate immune cells known for their prominent role in mediating allergic reactions. MAS-related G-protein coupled receptor-X2 (MRGPRX2) is a promiscuous G-protein coupled receptor (GPCR) expressed on mast cells that is activated by several ligands that share cationic and amphipathic properties. Interestingly, MRGPRX2 ligands include certain FDA-approved drugs, antimicrobial peptides, and neuropeptides. Consequently, this receptor has been implicated in causing mast cell-dependent pseudo-allergic reactions to these drugs and chronic inflammation associated with asthma, urticaria and rosacea in humans. In the current study we examined the role of osthole, a natural plant coumarin, in regulating mast cell responses when activated by the MRGPRX2 ligands, including compound 48/80, the neuropeptide substance P, and the cathelicidin LL-37. We demonstrate that osthole attenuates both the early (Ca2+ mobilization and degranulation) and delayed events (chemokine/cytokine production) of mast cell activation via MRGPRX2 in vitro. Osthole also inhibits MrgprB2- (mouse ortholog of human MRGPRX2) dependent inflammation in in vivo mouse models of pseudo-allergy. Molecular docking analysis suggests that osthole does not compete with the MRGPRX2 ligands for interaction with the receptor, but rather regulates MRGPRX2 activation via allosteric modifications. Furthermore, flow cytometry and confocal microscopy experiments reveal that osthole reduces both surface and intracellular expression levels of MRGPRX2 in mast cells. Collectively, our data demonstrate that osthole inhibits MRGPRX2/MrgprB2-induced mast cell responses and provides a rationale for the use of this natural compound as a safer alternative treatment for pseudo-allergic reactions in humans.
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MESH Headings
- Animals
- Calcium Signaling/drug effects
- Cell Degranulation/drug effects
- Cell Line, Tumor
- Coumarins/administration & dosage
- Disease Models, Animal
- Edema/drug therapy
- Edema/immunology
- Female
- Humans
- Male
- Mast Cells/drug effects
- Mast Cells/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Molecular Docking Simulation
- Nerve Tissue Proteins/antagonists & inhibitors
- Nerve Tissue Proteins/chemistry
- Nerve Tissue Proteins/metabolism
- Phytotherapy/methods
- Plant Extracts/administration & dosage
- Rats
- Receptors, G-Protein-Coupled/antagonists & inhibitors
- Receptors, G-Protein-Coupled/chemistry
- Receptors, G-Protein-Coupled/metabolism
- Receptors, Neuropeptide/antagonists & inhibitors
- Receptors, Neuropeptide/chemistry
- Receptors, Neuropeptide/metabolism
- Tissue Donors
- Treatment Outcome
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Affiliation(s)
- Brianna N. Callahan
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Ananth K. Kammala
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Meesum Syed
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Canchai Yang
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | | | - Rithvik Nellutla
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Alena P. Chumanevich
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Carole A. Oskeritzian
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Rupali Das
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Hariharan Subramanian
- Department of Physiology, Michigan State University, East Lansing, MI, United States
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Occhiuto CJ, Kammala AK, Yang C, Nellutla R, Garcia M, Gomez G, Subramanian H. Store-Operated Calcium Entry via STIM1 Contributes to MRGPRX2 Induced Mast Cell Functions. Front Immunol 2020; 10:3143. [PMID: 32038646 PMCID: PMC6985555 DOI: 10.3389/fimmu.2019.03143] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Accepted: 12/27/2019] [Indexed: 12/13/2022] Open
Abstract
Mast cells are inflammatory immune cells that play an essential role in mediating allergic reactions in humans. It is well-known that mast cell activation is critically regulated by intracellular calcium ion (Ca2+) concentrations. MAS-related G-protein coupled receptor-X2 (MRGPRX2) is a G-protein coupled receptor (GPCR) expressed on mast cells that is activated by various ligands, including several FDA approved drugs; consequently, this receptor has been implicated in causing pseudo-allergic reactions in humans. MRGPRX2 activation leads to an increase in intracellular Ca2+ levels; however, the Ca2+ mobilizing mechanisms utilized by this receptor are largely unknown. Previous reports showed that store-operated Ca2+ entry (SOCE) via the calcium sensor, stromal interaction molecule 1 (STIM1), regulates mast cell response induced by the high-affinity IgE receptor (FcεRI). In this study, using complementary pharmacologic and genetic ablation approaches we demonstrate that SOCE through STIM1 promotes MRGPRX2-induced human mast cell response in vitro. Importantly, SOCE also critically modulates MrgprB2 (mouse ortholog of human MRGPRX2) dependent inflammation in in vivo mouse models of pseudo-allergy. Collectively, our data suggests that MRGPRX2/MrgprB2 activation of mast cells is dependent on SOCE via STIM1, and further characterization of the MRGPRX2-SOCE-STIM1 pathway will lead to the identification of novel targets for the treatment of pseudo-allergic reactions in humans.
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Affiliation(s)
| | - Ananth K Kammala
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Canchai Yang
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Rithvik Nellutla
- Department of Physiology, Michigan State University, East Lansing, MI, United States
| | - Marco Garcia
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Gregorio Gomez
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina, Columbia, SC, United States
| | - Hariharan Subramanian
- Department of Physiology, Michigan State University, East Lansing, MI, United States
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30
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Polymorphisms in the P2X7 receptor, and differential expression of Toll-like receptor-mediated cytokines and defensins, in a Canadian Indigenous group. Sci Rep 2019; 9:14204. [PMID: 31578370 PMCID: PMC6775093 DOI: 10.1038/s41598-019-50596-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 09/16/2019] [Indexed: 12/21/2022] Open
Abstract
Canadian Indigenous peoples (First Nations and Inuit) exhibit a high burden of infectious diseases including tuberculosis influenced by societal factors, and biological determinants. Toll-like receptor (TLR)-mediated innate immune responses are the first line of defence against infections. We examined the production of a panel of 30 cytokines in peripheral blood-derived mononuclear cells (PBMC) isolated from Indigenous and non-Indigenous participants, following stimulation with five different TLR ligands. The levels of TLR-induced pro-inflammatory cytokines such as IL-12/23p40, IL-16, and IFN-γ, and chemokines (MCP-4, MDC and eotaxin) were different between Indigenous compared to non-Indigenous participants. Antimicrobial cationic host defence peptides (CHDP) induced by TLR activation are critical for resolution of infections and modulate the TLR-to-NFκB pathway to alter downstream cytokine responses. Therefore, we examined the expression of human CHDP defensins and cathelicidin in PBMC. mRNA expression of genes encoding for def-A1 and def-B1 were significantly higher following stimulation with TLR ligands in Indigenous compared to non-Indigenous participants. The purinergic receptor P2X7 known to be activated by ATP released following TLR stimulation, is a receptor for CHDP. Therefore, we further examined single nucleotide polymorphisms (SNP) in P2X7. Indigenous participants had a significantly higher percentage of a P2X7 SNP which is associated with reduced function and lower ability to clear infections. These results suggest that a higher frequency of non-functional P2X7 receptors may influence the activity of downstream immune mediators required for resolution of infections such as pro-inflammatory cytokines and CHDP defensins, thus contributing to higher burden of infections in Indigenous population.
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Manfredini M, Giuliani AL, Ruina G, Gafà R, Bosi C, Zoppas E, Di Virgilio F, Bettoli V. The P2X7 Receptor Is Overexpressed in the Lesional Skin of Subjects Affected by Hidradenitis Suppurativa: A Preliminary Study. Dermatology 2019; 237:111-118. [PMID: 31454821 DOI: 10.1159/000502026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 07/09/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND P2X receptors (P2XRs) are plasma membrane channels involved in the modulation of immune responses. The role of the P2X7 receptor (P2X7R) has never been investigated in hidradenitis suppurativa (HS), which is a recurrent skin disease characterized by inflammatory nodules, scarring, and suppuration. OBJECTIVE Our aim was to investigate by immunohistochemistry (IHC) P2X7R, NLRP3 (NOD-like receptor family, pyrin domain-containing 3), and interleukin-1β (IL-1β) expression in HS lesions compared to healthy control (HC) skin. METHOD The intensity of IHC immunostaining was semi-quantitatively graded for keratinocytes, neutrophils, lymphocytes, and monocytes. Statistical significance was assessed by the Mann-Whitney U test, Cohen's κ coefficient, and χ2 test. RESULTS A total of 59 samples, 31 from HS and 28 from HC, were collected and analysed. In skin keratinocytes, lymphocytes, and monocytes, but not in neutrophils, P2X7R and NLRP3 protein expression was significantly increased in HS versus the HC group. IL-1β protein expression was also higher in HS versus the HC group both in skin keratinocytes and in the inflammatory infiltrate. Cohen's κ correlation coefficients for the expression of P2X7R versus NLRP3 or IL-1β in skin keratinocytes were significant (κ = 0.43 and 0.34, respectively). The same association between P2X7R and NLRP3 or IL-1β was confirmed by χ2 tests. CONCLUSION P2X7R, NLRP3, and IL-1β are overexpressed, and therefore the entire P2X7R/NLRP3/IL-1β pro-inflammatory axis is likely overactive in the skin of HS patients. This observation might provide clues to the pathogenesis of this disease and suggest novel therapies and markers of disease activity.
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Affiliation(s)
- Marco Manfredini
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Ferrara, Ferrara, Italy, .,Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences Related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy,
| | - Anna Lisa Giuliani
- Oncology and Experimental Biology Section, Department of Morphology, Surgery and Experimental Medicine, Pathology, University of Ferrara, Ferrara, Italy
| | - Giulia Ruina
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Roberta Gafà
- Pathological Anatomy Section, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Cristina Bosi
- Pathological Anatomy Section, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Elisabetta Zoppas
- Oncology and Experimental Biology Section, Department of Morphology, Surgery and Experimental Medicine, Pathology, University of Ferrara, Ferrara, Italy
| | - Francesco Di Virgilio
- Oncology and Experimental Biology Section, Department of Morphology, Surgery and Experimental Medicine, Pathology, University of Ferrara, Ferrara, Italy
| | - Vincenzo Bettoli
- Section of Dermatology, Department of Clinical and Experimental Medicine, University of Ferrara, Ferrara, Italy
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Han J, Liu T, Zhang M, Wang A. The relationship between inflammatory bowel disease and rosacea over the lifespan: A meta-analysis. Clin Res Hepatol Gastroenterol 2019; 43:497-502. [PMID: 30389397 DOI: 10.1016/j.clinre.2018.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/10/2018] [Accepted: 09/17/2018] [Indexed: 02/04/2023]
Abstract
BACKGROUNDS AND AIMS It has been argued that the relationship between inflammatory bowel disease (IBD) and rosacea is bi-directional, but this hypothesis has not been explicitly tested. This systematic review examines the bi-directional prospective relationships between IBD and rosacea. METHODS A comprehensive search through PubMed and EMBASE was undertaken for studies investigating the association between two mainly forms of IBD [ulcerative colitis (UC) and Crohn's disease (CD)] and rosacea published in English until Jan 2018. Reviewers assessed the eligibility of each report by exposure/outcome measurement and study design. Two sets of pooled risk estimates were calculated using fixed or random effects: the direction from IBD to rosacea and rosacea to IBD. RESULTS Five publications on 13 separate study results involving 5,051,356 participants were eligible for this meta-analysis. A total of 6 outcomes established the direction of association from IBD to rosacea, and 7 outcomes examined the direction of association from rosacea to IBD. Compared to a non-rosacea population, the pooled RR (95% CI) for overall IBD, UC and CD were 1.32 (1.18-1.49), 1.19 (1.02-1.38) and 1.52 (1.25-1.84), respectively (P < 0.05). Meanwhile, the summary RR (95% CI) of rosacea in overall IBD, UC and CD patients were 1.66 (1.50-1.84), 1.69 (1.48-1.93) and 2.08 (1.26-3.46), respectively (P < 0.05). CONCLUSION Our meta-analysis confirmed a significant bi-directional association in occurrence of IBD and rosacea. Future studies should specifically investigate possible shared pathophysiological mechanisms between the two disorders.
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Affiliation(s)
- Jing Han
- School of Nursing, Qingdao University, Qingdao, Shandong, China
| | - Ting Liu
- School of Nursing, Qingdao University, Qingdao, Shandong, China
| | - Mei Zhang
- School of Nursing, Qingdao University, Qingdao, Shandong, China
| | - Aimin Wang
- School of Nursing, Qingdao University, Qingdao, Shandong, China.
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33
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Nam JH, Yang J, Park J, Seo JH, Chang Y, Ryu S, Kim WS. Association between rosacea severity and relative muscle mass: A cross-sectional study. J Dermatol 2018; 46:11-17. [DOI: 10.1111/1346-8138.14689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 09/26/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Jae-Hui Nam
- Department of Dermatology; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul Korea
- Veterans Medical Research Institute; Veterans Health Service Medical Center; Seoul Korea
| | - Junghwa Yang
- Department of Dermatology; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul Korea
| | - Jiho Park
- Department of Dermatology; Veteran Health Service Medical Center; Seoul Korea
| | - Je Hyun Seo
- Veterans Medical Research Institute; Veterans Health Service Medical Center; Seoul Korea
| | - Yoosoo Chang
- Center for Cohort Studies; Total Healthcare Center; Seoul Korea
- Department of Occupational and Environmental Medicine; School of Medicine; Kangbuk Samsung Hospital; Seoul Korea
- Department of Clinical Research Design & Evaluation; SAIHST; Sungkyunkwan University; Seoul Korea
| | - Seungho Ryu
- Center for Cohort Studies; Total Healthcare Center; Seoul Korea
- Department of Occupational and Environmental Medicine; School of Medicine; Kangbuk Samsung Hospital; Seoul Korea
- Department of Clinical Research Design & Evaluation; SAIHST; Sungkyunkwan University; Seoul Korea
| | - Won-Serk Kim
- Department of Dermatology; Kangbuk Samsung Hospital; Sungkyunkwan University School of Medicine; Seoul Korea
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34
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Abhimanyu, Coussens AK. The role of UV radiation and vitamin D in the seasonality and outcomes of infectious disease. Photochem Photobiol Sci 2018; 16:314-338. [PMID: 28078341 DOI: 10.1039/c6pp00355a] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The seasonality of infectious disease outbreaks suggests that environmental conditions have a significant effect on disease risk. One of the major environmental factors that can affect this is solar radiation, primarily acting through ultraviolet radiation (UVR), and its subsequent control of vitamin D production. Here we show how UVR and vitamin D, which are modified by latitude and season, can affect host and pathogen fitness and relate them to the outcomes of bacterial, viral and vector-borne infections. We conducted a thorough comparison of the molecular and cellular mechanisms of action of UVR and vitamin D on pathogen fitness and host immunity and related these to the effects observed in animal models and clinical trials to understand their independent and complementary effects on infectious disease outcome. UVR and vitamin D share common pathways of innate immune activation primarily via antimicrobial peptide production, and adaptive immune suppression. Whilst UVR can induce vitamin D-independent effects in the skin, such as the generation of photoproducts activating interferon signaling, vitamin D has a larger systemic effect due to its autocrine and paracrine modulation of cellular responses in a range of tissues. However, the seasonal patterns in infectious disease prevalence are not solely driven by variation in UVR and vitamin D levels across latitudes. Vector-borne pathogens show a strong seasonality of infection correlated to climatic conditions favoring their replication. Conversely, pathogens, such as influenza A virus, Mycobacterium tuberculosis and human immunodeficiency virus type 1, have strong evidence to support their interaction with vitamin D. Thus, UVR has both vitamin D-dependent and independent effects on infectious diseases; these effects vary depending on the pathogen of interest and the effects can be complementary or antagonistic.
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Affiliation(s)
- Abhimanyu
- Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Anzio Rd, Observatory, 7925, Western Cape, South Africa.
| | - Anna K Coussens
- Clinical Infectious Diseases Research Initiative, Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Anzio Rd, Observatory, 7925, Western Cape, South Africa. and Division of Medical Microbiology, Department of Pathology, University of Cape Town, Anzio Rd, Observatory, 7925, Western Cape, South Africa
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Suhng E, Kim BH, Choi YW, Choi HY, Cho H, Byun JY. Increased expression of IL-33 in rosacea skin and UVB-irradiated and LL-37-treated HaCaT cells. Exp Dermatol 2018; 27:1023-1029. [PMID: 29873850 DOI: 10.1111/exd.13702] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/30/2018] [Indexed: 01/16/2023]
Abstract
Rosacea is one of the most common dermatoses of adults. Although the detailed pathophysiology remains unknown, it is thought that rosacea is caused by a consistently aberrant, innate immune response, and that LL-37 plays an important role. However, involvement of the inflammatory cytokine IL-33 has not yet been studied. We explored the role played by IL-33 in the pathophysiology of rosacea. First, we immunohistochemically evaluated the expression of IL-33 and its receptor (ST2) in rosacea skin. Second, we exposed HaCaT cells to ultraviolet B (UVB) irradiation in the presence or absence of LL-37 and measured the expression of proinflammatory cytokines including IL-33. We also analysed VEGF (vascular endothelial growth factor) mRNA expression and protein release after costimulation of HaCaT cells by LL-37 and IL-33. Immunohistochemically, IL-33 expression was enhanced in the skin of rosacea patients, especially with erythematotelangiectatic subtype. In vitro, UVB and LL-37 synergistically increased mRNAs expression of proinflammatory cytokines, especially IL-33 and IL-1β. IL-33 protein release was also synergistically increased by LL-37 and UVB treatment. LL-37 and IL-33 stimulated VEGF mRNA expression and VEGF release from HaCaT cells. Our findings suggest that rosacea skin with abundant LL-37 may robustly produce and release IL-33 when exposed to UV radiation. IL-33 may participate in the angiogenesis and vasodilation of rosacea skin by enhancing VEGF release.
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Affiliation(s)
- Eunah Suhng
- Yonsei Gowoon Dermatologic Clinic, Seoul, Korea.,Department of Dermatology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Bo Hee Kim
- Research Institute for Integrative Regenerative Biomedical Engineering, Dongguk University, Seoul, Korea
| | - You Won Choi
- Department of Dermatology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Hae Young Choi
- Department of Dermatology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Hyunjin Cho
- Research Institute for Integrative Regenerative Biomedical Engineering, Dongguk University, Seoul, Korea
| | - Ji Yeon Byun
- Department of Dermatology, Ewha Womans University College of Medicine, Seoul, Korea
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36
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Pfalzgraff A, Brandenburg K, Weindl G. Antimicrobial Peptides and Their Therapeutic Potential for Bacterial Skin Infections and Wounds. Front Pharmacol 2018; 9:281. [PMID: 29643807 PMCID: PMC5882822 DOI: 10.3389/fphar.2018.00281] [Citation(s) in RCA: 259] [Impact Index Per Article: 43.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/13/2018] [Indexed: 01/10/2023] Open
Abstract
Alarming data about increasing resistance to conventional antibiotics are reported, while at the same time the development of new antibiotics is stagnating. Skin and soft tissue infections (SSTIs) are mainly caused by the so called ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) which belong to the most recalcitrant bacteria and are resistant to almost all common antibiotics. S. aureus and P. aeruginosa are the most frequent pathogens isolated from chronic wounds and increasing resistance to topical antibiotics has become a major issue. Therefore, new treatment options are urgently needed. In recent years, research focused on the development of synthetic antimicrobial peptides (AMPs) with lower toxicity and improved activity compared to their endogenous counterparts. AMPs appear to be promising therapeutic options for the treatment of SSTIs and wounds as they show a broad spectrum of antimicrobial activity, low resistance rates and display pivotal immunomodulatory as well as wound healing promoting activities such as induction of cell migration and proliferation and angiogenesis. In this review, we evaluate the potential of AMPs for the treatment of bacterial SSTIs and wounds and provide an overview of the mechanisms of actions of AMPs that contribute to combat skin infections and to improve wound healing. Bacteria growing in biofilms are more resistant to conventional antibiotics than their planktonic counterparts due to limited biofilm penetration and distinct metabolic and physiological functions, and often result in chronification of infections and wounds. Thus, we further discuss the feasibility of AMPs as anti-biofilm agents. Finally, we highlight perspectives for future therapies and which issues remain to bring AMPs successfully to the market.
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Affiliation(s)
- Anja Pfalzgraff
- Pharmacology and Toxicology, Department of Biology, Chemistry, Pharmacy, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
| | | | - Günther Weindl
- Pharmacology and Toxicology, Department of Biology, Chemistry, Pharmacy, Institute of Pharmacy, Freie Universität Berlin, Berlin, Germany
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37
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Florez-Pollack S, Chong BF. SnapshotDx Quiz: February 2018. J Invest Dermatol 2018; 138:e19. [DOI: 10.1016/j.jid.2017.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Wolf P, Weger W, Patra V, Gruber-Wackernagel A, Byrne SN. Desired response to phototherapy vs photoaggravation in psoriasis: what makes the difference? Exp Dermatol 2018; 25:937-944. [PMID: 27376966 DOI: 10.1111/exd.13137] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 12/13/2022]
Abstract
Psoriasis commonly responds beneficially to UV radiation from natural sunlight or artificial sources. Therapeutic mechanisms include the proapoptotic and immunomodulating effects of UV, affecting many cells and involving a variety of pro- and anti-inflammatory cytokines, downregulating the Th17/IL-23 response with simultaneous induction of regulatory immune cells. However, exposure to UV radiation in a subset of psoriasis patients leads to exacerbation of the disease. We herein shed light on the predisposing factors of photosensitive psoriasis, including genetics (such as HLA-Cw*0602 or CARD14), gender and coexisting photodermatoses such as polymorphic light eruption (PLE) in the context of potential molecular mechanisms behind therapeutic photoresponsiveness or photoaggravation. UV-induced damage/pathogen-associated molecular patterns, damage to self-coding RNA (signalling through Toll-like receptors), certain antimicrobial peptides and/or inflammasome activation may induce innate immunity, leading to psoriasis at the site of UV exposure when there is concomitant, predisposing resistance against UV-induced suppression of the adaptive immune response (like in PLE) that otherwise would act to reduce psoriasis.
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Affiliation(s)
- Peter Wolf
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - Wolfgang Weger
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | - VijayKumar Patra
- Research Unit for Photodermatology, Department of Dermatology, Medical University of Graz, Graz, Austria
| | | | - Scott N Byrne
- Cellular Photoimmunology Group, Infectious Diseases and Immunology, Sydney Medical School, Charles Perkins Centre, The University of Sydney, Sydney, NSW, Australia
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39
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Kim M, Kim J, Jeong SW, Jo H, Park HJ. Long-pulsed 1064-nm Nd: YAG laser ameliorates LL-37-induced rosacea-like skin lesions through promoting collagen remodeling in BALB/c mice. Lasers Med Sci 2017; 33:393-397. [DOI: 10.1007/s10103-017-2410-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Accepted: 12/04/2017] [Indexed: 12/31/2022]
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40
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Holmes AD, Spoendlin J, Chien AL, Baldwin H, Chang ALS. Evidence-based update on rosacea comorbidities and their common physiologic pathways. J Am Acad Dermatol 2017; 78:156-166. [PMID: 29089181 DOI: 10.1016/j.jaad.2017.07.055] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 07/11/2017] [Accepted: 07/14/2017] [Indexed: 02/08/2023]
Abstract
Rosacea is a common chronic inflammatory disease affecting the facial skin whose etiology and pathophysiology are the subject of much investigation. Risk factors include genetic and environmental elements that may predispose individuals to localized inflammation and abnormal neurovascular responses to stimuli. Recent studies have introduced an array of systemic rosacea comorbidities, such as inflammatory bowel disease and neurologic conditions, that can be challenging to synthesize. We critically review the current data behind reported rosacea comorbidities and identify and highlight underrecognized physiologic mediators shared among rosacea and associated comorbidities. This information may be helpful in addressing patient questions about potential systemic implications of rosacea and can serve as a candidate platform for future research to understand rosacea and improve treatments.
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Affiliation(s)
| | - Julia Spoendlin
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Anna L Chien
- Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Hilary Baldwin
- Acne Treatment and Research Center, Morristown, New Jersey
| | - Anne Lynn S Chang
- Department of Dermatology, Stanford University School of Medicine, Redwood City, California.
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41
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Rainer BM, Kang S, Chien AL. Rosacea: Epidemiology, pathogenesis, and treatment. DERMATO-ENDOCRINOLOGY 2017; 9:e1361574. [PMID: 29484096 PMCID: PMC5821167 DOI: 10.1080/19381980.2017.1361574] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 07/26/2017] [Indexed: 02/08/2023]
Abstract
Rosacea is a chronic relapsing inflammatory skin disease with a high prevalence among adults of Northern European heritage with fair skin. Symptoms present in various combinations and severity, often fluctuating between periods of exacerbation and remission. Based on morphological characteristics, rosacea is generally classified into four major subtypes: erythematotelangiectatic, papulopustular, phymatous, and ocular. Diverse environmental and endogenous factors have been shown to stimulate an augmented innate immune response and neurovascular dysregulation; however, rosacea's exact pathogenesis is still unclear. An evidence-based approach is essential in delineating differences between the many available treatments. Because of the diverse presentations of rosacea, approaches to treatment must be individualized based on the disease severity, quality-of-life implications, comorbidities, trigger factors, and the patient's commitment to therapy.
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Affiliation(s)
- Barbara M Rainer
- Department of Dermatology, Medical University of Graz, Graz, Austria.,Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sewon Kang
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Anna L Chien
- Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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42
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Severino P, Ariga SK, Barbeiro HV, de Lima TM, de Paula Silva E, Barbeiro DF, Machado MCC, Nizet V, Pinheiro da Silva F. Cathelicidin-deficient mice exhibit increased survival and upregulation of key inflammatory response genes following cecal ligation and puncture. J Mol Med (Berl) 2017. [DOI: 10.1007/s00109-017-1555-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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43
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Abstract
Inflammasomes are intracellular multiprotein complexes that comprise part of the
innate immune response. Since their definition, inflammasome disorders have been
linked to an increasing number of diseases. Autoinflammatory diseases refer to
disorders in which local factors lead to the activation of innate immune cells,
causing tissue damage when in the absence of autoantigens and autoantibodies.
Skin symptoms include the main features of monogenic inflammasomopathies, such
as Cryopyrin-Associated Periodic Syndromes (CAPS), Familial Mediterranean Fever
(FMF), Schnitzler Syndrome, Hyper-IgD Syndrome (HIDS), PAPA Syndrome, and
Deficiency of IL-1 Receptor Antagonist (DIRA). Concepts from other pathologies
have also been reviewed in recent years, such as psoriasis, after the
recognition of a combined contribution of innate and adaptive immunity in its
pathogenesis. Inflammasomes are also involved in the response to various
infections, malignancies, such as melanoma, autoimmune diseases, including
vitiligo and lupus erythematosus, atopic and contact dermatitis, acne,
hidradenitis suppurativa, among others. Inhibition of the inflammasome pathway
may be a target for future therapies, as already occurs in the handling of CAPS,
through the introduction of IL-1 inhibitors. This study presents a literature
review focusing on the participation of inflammasomes in skin diseases.
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Affiliation(s)
| | - Cyro Festa
- Universidade de São Paulo (USP) - São Paulo (SP), Brazil
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44
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Chen Y, Moore CD, Zhang JY, Hall RP, MacLeod AS, Liedtke W. TRPV4 Moves toward Center-Fold in Rosacea Pathogenesis. J Invest Dermatol 2017; 137:801-804. [PMID: 28340683 PMCID: PMC5536341 DOI: 10.1016/j.jid.2016.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 12/08/2016] [Indexed: 11/29/2022]
Abstract
Mascarenhas et al. report that TRPV4 expression is upregulated in mast cells in response to the proteolytic cathelicidin fragment LL37 in a murine rosacea model and that TRPV4 loss of function attenuates mast cell degranulation. These findings render TRPV4 a translational-medical target in rosacea. However, signaling mechanisms causing increased expression of TRPV4 await elucidation. Moreover, we ask whether TRPV4-mediated Ca++-influx evokes mast cell degranulation.
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Affiliation(s)
- Yong Chen
- Department of Neurology, Duke University, School of Medicine, Durham, North Carolina, USA
| | - Carlene D Moore
- Department of Neurology, Duke University, School of Medicine, Durham, North Carolina, USA
| | - Jennifer Y Zhang
- Department of Dermatology, Duke University, Durham, North Carolina, USA
| | - Russell P Hall
- Department of Dermatology, Duke University, Durham, North Carolina, USA
| | - Amanda S MacLeod
- Department of Dermatology, Duke University, Durham, North Carolina, USA
| | - Wolfgang Liedtke
- Department of Neurology, Duke University, School of Medicine, Durham, North Carolina, USA; Department of Anesthesiology, Duke University, School of Medicine, Durham, North Carolina, USA; Department of Neurobiology, Duke University, School of Medicine, Durham, North Carolina, USA.
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45
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Pinheiro da Silva F, Machado MCC. The dual role of cathelicidins in systemic inflammation. Immunol Lett 2017; 182:57-60. [PMID: 28082134 DOI: 10.1016/j.imlet.2017.01.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/11/2016] [Accepted: 01/04/2017] [Indexed: 01/10/2023]
Abstract
Antimicrobial peptides are key components of the innate immune system. They act as broad-spectrum antimicrobial agents against Gram-positive and -negative bacteria, viruses, and fungi. More recently, antimicrobial peptides have been ascribed immunomodulatory functions, including roles in wound healing, induction of cytokines, and altering host gene expression. Cathelicidins are a class of antimicrobial peptide found in humans, mice, and rats, among others. Known as LL-37 in humans and cathelin-related antimicrobial peptide (CRAMP) in rodents, cathelicidins are produced by many different cells, including macrophages, neutrophils, and epithelial cells. The role of cathelicidins is somewhat confounding, as they exhibit both pro-and anti-inflammatory activity. A major obstacle in the study of cathelicidins is the inability of exogenous LL-37 or CRAMP to mimic the activity of their endogenous counterparts. Nevertheless, studies have shown that LL-37 is recognized by multiple receptors, and may stabilize or modulate Toll-like receptor signaling. In addition, cathelicidins play a role in apoptosis, inflammasome activation, and phagocytosis. However, many studies are revealing the dual effects of cathelicidins. For example, CRAMP appears to be protective in models of group A Streptococcus skin infection, pneumonia, and meningitis, but detrimental in cases of severe bacterial infection, such as septic shock. It is becoming increasingly clear that the activity of cathelicidins is modulated by complex interactions with the microenvironment, as well as the disease background. This article reviews what is currently known about the activity of cathelicidins in an attempt to understand their complex roles in systemic diseases.
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46
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Chen RJ, Lee YH, Yeh YL, Wang YJ, Wang BJ. The Roles of Autophagy and the Inflammasome during Environmental Stress-Triggered Skin Inflammation. Int J Mol Sci 2016; 17:E2063. [PMID: 27941683 PMCID: PMC5187863 DOI: 10.3390/ijms17122063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/29/2016] [Accepted: 12/05/2016] [Indexed: 02/07/2023] Open
Abstract
Inflammatory skin diseases are the most common problem in dermatology. The induction of skin inflammation by environmental stressors such as ultraviolet radiation (UVR), hexavalent chromium (Cr(VI)) and TiO₂/ZnO/Ag nanoparticles (NPs) has been demonstrated previously. Recent studies have indicated that the inflammasome is often wrongly activated by these environmental irritants, thus inducing massive inflammation and resulting in the development of inflammatory diseases. The regulation of the inflammasome with respect to skin inflammation is complex and is still not completely understood. Autophagy, an intracellular degradation system that is associated with the maintenance of cellular homeostasis, plays a key role in inflammasome inactivation. As a housekeeping pathway, cells utilize autophagy to maintain the homeostasis of the organ structure and function when exposed to environmental stressors. However, only a few studies have examined the effect of autophagy and/or the inflammasome on skin pathogenesis. Here we review recent findings regarding the involvement of autophagy and inflammasome activation during skin inflammation. We posit that autophagy induction is a novel mechanism inter-modulating environmental stressor-induced skin inflammation. We also attempt to highlight the role of the inflammasome and the possible underlying mechanisms and pathways reflecting the pathogenesis of skin inflammation induced by UVR, Cr(VI) and TiO₂/ZnO/Ag NPs. A more profound understanding about the crosstalk between autophagy and the inflammasome will contribute to the development of prevention and intervention strategies against human skin disease.
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Affiliation(s)
- Rong-Jane Chen
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Yu-Hsuan Lee
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ya-Ling Yeh
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei 110, Taiwan.
| | - Bour-Jr Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan 70428, Taiwan.
- Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan.
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47
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Muñoz M, Craske M, Severino P, de Lima TM, Labhart P, Chammas R, Velasco IT, Machado MCC, Egan B, Nakaya HI, Pinheiro da Silva F. Antimicrobial peptide LL-37 participates in the transcriptional regulation of melanoma cells. J Cancer 2016; 7:2341-2345. [PMID: 27994673 PMCID: PMC5166546 DOI: 10.7150/jca.16947] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 09/30/2016] [Indexed: 12/16/2022] Open
Abstract
Antimicrobial peptides are an ancient family of molecules that emerged millions of years ago and have been strongly conserved during the evolutionary process of living organisms. Recently, our group described that the human antimicrobial peptide LL-37 migrates to the nucleus, raising the possibility that LL-37 could directly modulate transcription under certain conditions. Here, we showed evidence that LL-37 binds to gene promoter regions, and LL-37 gene silencing changed the transcriptional program of melanoma A375 cells genes associated with histone, metabolism, cellular stress, ubiquitination and mitochondria.
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Affiliation(s)
- Mindy Muñoz
- Departamento de Análises Clínicas e Toxicológicas, Instituto de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brazil
| | | | - Patricia Severino
- Instituto Israelita de Ensino e Pesquisa, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Thais Martins de Lima
- Departamento de Emergências Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Paul Labhart
- Active Motif Incorporation, Carlsbad, California, USA
| | - Roger Chammas
- Departamento de Oncologia, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Irineu Tadeu Velasco
- Departamento de Emergências Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Brian Egan
- Active Motif Incorporation, Carlsbad, California, USA
| | - Helder I Nakaya
- Departamento de Análises Clínicas e Toxicológicas, Instituto de Ciências Farmacêuticas, Universidade de São Paulo, São Paulo, Brazil
| | - Fabiano Pinheiro da Silva
- Departamento de Emergências Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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48
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Holmes AD, Steinhoff M. Integrative concepts of rosacea pathophysiology, clinical presentation and new therapeutics. Exp Dermatol 2016; 26:659-667. [DOI: 10.1111/exd.13143] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/29/2016] [Indexed: 12/13/2022]
Affiliation(s)
| | - Martin Steinhoff
- Department of Dermatology; UCD Charles Institute for Translational Dermatology; University College Dublin; Dublin Ireland
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49
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Geraghty NJ, Watson D, Adhikary SR, Sluyter R. P2X7 receptor in skin biology and diseases. World J Dermatol 2016; 5:72-83. [DOI: 10.5314/wjd.v5.i2.72] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 11/23/2015] [Accepted: 01/29/2016] [Indexed: 02/06/2023] Open
Abstract
The P2X7 receptor is a trimeric ligand-gated cation channel present on immune and other cells. Activation of this receptor by its natural ligand extracellular adenosine triphosphate results in a variety of downstream responses, including the release of pro-inflammatory mediators and cell death. In normal skin, P2X7 is present on keratinocytes, Langerhans cells and fibroblasts, while the presence of this receptor on other cutaneous cells is mainly inferred from studies of equivalent cell types present in other tissues. Mast cells in normal skin however express negligible amounts of P2X7, which can be upregulated in cutaneous disease. This review discusses the potential significance of P2X7 in skin biology, and the role of this receptor in inflammatory skin disorders such as irritant and chronic dermatitis, psoriasis, graft-versus-host disease, as well is in wound healing, transplantation and skin cancer.
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50
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Kubanova AA, Makhakova YUB. Rosacea: prevalence, pathogenesis, particular features of clinical manifestations. VESTNIK DERMATOLOGII I VENEROLOGII 2015. [DOI: 10.25208/0042-4609-2015-91-3-36-45] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
This literature review examines principal aspects of rosacea prevalence in the Russian Federation and abroad, shows present-day opinions about the pathogenesis and histological picture of rosacea and presents actual classification and a number of key clinical forms of the disease.
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