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Huang D, Jiao X, Huang S, Liu J, Si H, Qi D, Pei X, Lu D, Wang Y, Li Z. Analysis of the heterogeneity and complexity of murine extraorbital lacrimal gland via single-cell RNA sequencing. Ocul Surf 2024; 34:60-95. [PMID: 38945476 DOI: 10.1016/j.jtos.2024.06.005] [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: 08/26/2022] [Revised: 06/22/2024] [Accepted: 06/26/2024] [Indexed: 07/02/2024]
Abstract
PURPOSE The lacrimal gland is essential for maintaining ocular surface health and avoiding external damage by secreting an aqueous layer of the tear film. However, a healthy lacrimal gland's inventory of cell types and heterogeneity remains understudied. METHODS Here, 10X Genome-based single-cell RNA sequencing was used to generate an unbiased classification of cellular diversity in the extraorbital lacrimal gland (ELG) of C57BL/6J mice. From 43,850 high-quality cells, we produced an atlas of cell heterogeneity and defined cell types using classic marker genes. The possible functions of these cells were analyzed through bioinformatics analysis. Additionally, the CellChat was employed for a preliminary analysis of the cell-cell communication network in the ELG. RESULTS Over 37 subclasses of cells were identified, including seven types of glandular epithelial cells, three types of fibroblasts, ten types of myeloid-derived immune cells, at least eleven types of lymphoid-derived immune cells, and five types of vascular-associated cell subsets. The cell-cell communication network analysis revealed that fibroblasts and immune cells play a pivotal role in the dense intercellular communication network within the mouse ELG. CONCLUSIONS This study provides a comprehensive transcriptome atlas and related database of the mouse ELG.
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Affiliation(s)
- Duliurui Huang
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Xinwei Jiao
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Shenzhen Huang
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Jiangman Liu
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Hongli Si
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China
| | - Di Qi
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Xiaoting Pei
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Dingli Lu
- Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China
| | - Yimian Wang
- Division of Medicine, Faculty of Medical Sciences, University College London, Gower Street, London, WC1E 6BT, UK
| | - Zhijie Li
- Department of Ophthalmology, Zhengzhou University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, Henan, China; Henan Eye Institute, Henan Eye Hospital and Henan Key Laboratory of Ophthalmology and Visual Science, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Zhengzhou, 450000, China.
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2
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Feng Y, Li J, Mo X, Ju Q. Macrophages in acne vulgaris: mediating phagocytosis, inflammation, scar formation, and therapeutic implications. Front Immunol 2024; 15:1355455. [PMID: 38550588 PMCID: PMC10972966 DOI: 10.3389/fimmu.2024.1355455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 02/28/2024] [Indexed: 04/02/2024] Open
Abstract
Macrophages serve as a pivotal nexus in the pathogenesis of acne vulgaris, orchestrating both the elimination of Cutibacterium acnes (C. acnes) and lipid metabolic regulation while also possessing the capacity to exacerbate inflammation and induce cutaneous scarring. Additionally, recent investigations underscore the therapeutic potential inherent in macrophage modulation and challenge current anti-inflammatory strategies for acne vulgaris. This review distills contemporary advances, specifically examining the dual roles of macrophages, underlying regulatory frameworks, and emergent therapeutic avenues. Such nuanced insights hold the promise of guiding future explorations into the molecular etiology of acne and the development of more efficacious treatment modalities.
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Affiliation(s)
| | | | - Xiaohui Mo
- Department of Dermatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qiang Ju
- Department of Dermatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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3
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Wang G, Wang Y, Ma F. Exploiting bacterial-origin immunostimulants for improved vaccination and immunotherapy: current insights and future directions. Cell Biosci 2024; 14:24. [PMID: 38368397 PMCID: PMC10874560 DOI: 10.1186/s13578-024-01207-7] [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: 10/10/2023] [Accepted: 02/06/2024] [Indexed: 02/19/2024] Open
Abstract
Vaccination is a valid strategy to prevent and control newly emerging and reemerging infectious diseases in humans and animals. However, synthetic and recombinant antigens are poor immunogenic to stimulate efficient and protective host immune response. Immunostimulants are indispensable factors of vaccines, which can promote to trigger fast, robust, and long-lasting immune responses. Importantly, immunotherapy with immunostimulants is increasing proved to be an effective and promising treatment of cancer, which could enhance the function of the immune system against tumor cells. Pattern recognition receptors (PRRs) play vital roles in inflammation and are central to innate and adaptive immune responses. Toll-like receptors (TLRs)-targeting immunostimulants have become one of the hotspots in adjuvant research and cancer therapy. Bacterial-origin immunoreactive molecules are usually the ligands of PRRs, which could be fast recognized by PRRs and activate immune response to eliminate pathogens. Varieties of bacterial immunoreactive molecules and bacterial component-mimicking molecules have been successfully used in vaccines and clinical therapy so far. This work provides a comprehensive review of the development, current state, mechanisms, and applications of bacterial-origin immunostimulants. The exploration of bacterial immunoreactive molecules, along with their corresponding mechanisms, holds immense significance in deepening our understanding of bacterial pathogenicity and in the development of promising immunostimulants.
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Affiliation(s)
- Guangyu Wang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, Jiangsu, 210023, China
| | - Yongkang Wang
- College of Food Science and Engineering, Collaborative Innovation Center for Modern Grain Circulation and Safety/Key Laboratory of Grains and Oils Quality Control and Processing, Nanjing University of Finance and Economics, Nanjing, Jiangsu, 210023, China
| | - Fang Ma
- Institute of Veterinary Immunology & Engineering, National Research Center of Engineering and Technology for Veterinary Biologicals, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, China.
- GuoTai (Taizhou) Center of Technology Innovation for Veterinary Biologicals, Taizhou, 225300, China.
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4
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Huang L, Yang S, Yu X, Fang F, Zhu L, Wang L, Zhang X, Yang C, Qian Q, Zhu T. Association of different cell types and inflammation in early acne vulgaris. Front Immunol 2024; 15:1275269. [PMID: 38357543 PMCID: PMC10864487 DOI: 10.3389/fimmu.2024.1275269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/17/2024] [Indexed: 02/16/2024] Open
Abstract
Acne vulgaris, one of the most common skin diseases, is a chronic cutaneous inflammation of the upper pilosebaceous unit (PSU) with complex pathogenesis. Inflammation plays a central role in the pathogenesis of acne vulgaris. During the inflammatory process, the innate and adaptive immune systems are coordinately activated to induce immune responses. Understanding the infiltration and cytokine secretion of differential cells in acne lesions, especially in the early stages of inflammation, will provide an insight into the pathogenesis of acne. The purpose of this review is to synthesize the association of different cell types with inflammation in early acne vulgaris and provide a comprehensive understanding of skin inflammation and immune responses.
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Affiliation(s)
- Lei Huang
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Shuyun Yang
- Department of Dermatology, The People’s Hospital of Baoshan, Baoshan, Yunnan, China
| | - Xiuqin Yu
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Fumin Fang
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Liping Zhu
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Lu Wang
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiaoping Zhang
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Changzhi Yang
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qihong Qian
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Tingting Zhu
- Department of Dermatology, The First Affiliated Hospital of Soochow University, Suzhou, China
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5
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Do TH, Ma F, Andrade PR, Teles R, de Andrade Silva BJ, Hu C, Espinoza A, Hsu JE, Cho CS, Kim M, Xi J, Xing X, Plazyo O, Tsoi LC, Cheng C, Kim J, Bryson BD, O'Neill AM, Colonna M, Gudjonsson JE, Klechevsky E, Lee JH, Gallo RL, Bloom BR, Pellegrini M, Modlin RL. TREM2 macrophages induced by human lipids drive inflammation in acne lesions. Sci Immunol 2022; 7:eabo2787. [PMID: 35867799 PMCID: PMC9400695 DOI: 10.1126/sciimmunol.abo2787] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Acne affects 1 in 10 people globally, often resulting in disfigurement. The disease involves excess production of lipids, particularly squalene, increased growth of Cutibacterium acnes, and a host inflammatory response with foamy macrophages. By combining single-cell and spatial RNA sequencing as well as ultrahigh-resolution Seq-Scope analyses of early acne lesions on back skin, we identified TREM2 macrophages expressing lipid metabolism and proinflammatory gene programs in proximity to hair follicle epithelium expressing squalene epoxidase. We established that the addition of squalene induced differentiation of TREM2 macrophages in vitro, which were unable to kill C. acnes. The addition of squalene to macrophages inhibited induction of oxidative enzymes and scavenged oxygen free radicals, providing an explanation for the efficacy of topical benzoyl peroxide in the clinical treatment of acne. The present work has elucidated the mechanisms by which TREM2 macrophages and unsaturated lipids, similar to their involvement in atherosclerosis, may contribute to the pathogenesis of acne.
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Affiliation(s)
- Tran H Do
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.,Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Feiyang Ma
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA.,Institute for Quantitative and Computational Biosciences-The Collaboratory, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Priscila R Andrade
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Rosane Teles
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Bruno J de Andrade Silva
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Chanyue Hu
- Institute for Quantitative and Computational Biosciences-The Collaboratory, University of California, Los Angeles, Los Angeles, CA 90095, USA.,Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alejandro Espinoza
- Institute for Quantitative and Computational Biosciences-The Collaboratory, University of California, Los Angeles, Los Angeles, CA 90095, USA.,Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jer-En Hsu
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Chun-Seok Cho
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Myungjin Kim
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Jingyue Xi
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA
| | - Xianying Xing
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Olesya Plazyo
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Carol Cheng
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Jenny Kim
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA
| | - Bryan D Bryson
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Alan M O'Neill
- Department of Dermatology, University of California San Diego, La Jolla, CA 92093, USA
| | - Marco Colonna
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | | | - Eynav Klechevsky
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jun Hee Lee
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Richard L Gallo
- Department of Dermatology, University of California San Diego, La Jolla, CA 92093, USA
| | - Barry R Bloom
- Department of Immunology and Infectious Diseases, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Matteo Pellegrini
- Institute for Quantitative and Computational Biosciences-The Collaboratory, University of California, Los Angeles, Los Angeles, CA 90095, USA.,Department of Molecular Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Robert L Modlin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles,, Los Angeles, CA 90095, USA.,Department of Microbiology, Immunology and Molecular Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA
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6
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Al Abdullah MJ, Mahdi YG. Intense pulsed light versus benzoyl peroxide. JOURNAL OF POPULATION THERAPEUTICS AND CLINICAL PHARMACOLOGY = JOURNAL DE LA THERAPEUTIQUE DES POPULATIONS ET DE LA PHARMACOLOGIE CLINIQUE 2022; 28:e54-e61. [PMID: 35044116 DOI: 10.47750/jptcp.2022.856] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/26/2021] [Indexed: 06/14/2023]
Abstract
The intense pulsed light (IPL) therapy has three mechanisms of action in acne vulgaris: photochemical, photoimmunological, and photothermal. In this clinical trial, 47 patients with facial inflammatory acne lesions, ages ranging from 15 to 40 years, were enrolled. Patients were categorized into two groups: (a) 20 patients in Group A treated with IPL for 3 sessions, 3 weeks apart, (b) and 27 patients in Group B treated with benzoyl peroxide (BPO) 2.5% gel daily at night for 9 weeks. Follow up was done at 3 weeks after the end of treatment. The effect of treatment was evaluated objectively according to total lesion counting and digital photographic assessment and subjectively according to the patients' satisfaction. IPL is an effective and well-tolerated method for the treatment of inflammatory facial acne like BPO. Therefore, the IPL can be used as a standard therapy for inflammatory acne vulgaris.
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Affiliation(s)
- Mohammad J Al Abdullah
- Department of Dermatology and Venereology, College of Medicine, University of Kufa, Najaf, Iraq;
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7
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Palmieri B, Vadalà M. Letter to the Editor: Corynebacterium Parvum ( Propionibacterium Acnes): Cytokines Cells, Innate Immunity, and Putative Antiviral Adoption. J Interferon Cytokine Res 2021; 41:132-136. [PMID: 33750214 DOI: 10.1089/jir.2020.0216] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Beniamino Palmieri
- Department of General Surgery and Surgical Specialties, University of Modena and Reggio Emilia Medical School, Surgical Clinic, Modena, Italy.,Clinical Department, Second Opinion Medical Network, Modena, Italy
| | - Maria Vadalà
- Clinical Department, Second Opinion Medical Network, Modena, Italy
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8
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Kim EW, De Leon A, Jiang Z, Radu RA, Martineau AR, Chan ED, Bai X, Su WL, Montoya DJ, Modlin RL, Liu PT. Vitamin A Metabolism by Dendritic Cells Triggers an Antimicrobial Response against Mycobacterium tuberculosis. mSphere 2019; 4:e00327-19. [PMID: 31167948 PMCID: PMC6553556 DOI: 10.1128/msphere.00327-19] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 05/12/2019] [Indexed: 12/24/2022] Open
Abstract
Epidemiological evidence correlates low serum vitamin A (retinol) levels with increased susceptibility to active tuberculosis (TB); however, retinol is biologically inactive and must be converted into its bioactive form, all-trans retinoic acid (ATRA). Given that ATRA triggers a Niemann-Pick type C2 (NPC2)-dependent antimicrobial response against Mycobacterium tuberculosis, we investigated the mechanism by which the immune system converts retinol into ATRA at the site of infection. We demonstrate that granulocyte-macrophage colony-stimulating factor (GM-CSF)-derived dendritic cells (DCs), but not macrophages, express enzymes in the vitamin A metabolic pathway, including aldehyde dehydrogenase 1 family, member a2 (ALDH1A2) and short-chain dehydrogenase/reductase family, member 9 (DHRS9), enzymes capable of the two-step conversion of retinol into ATRA, which is subsequently released from the cell. Additionally, mRNA and protein expression levels of ALDH1A2 and DC marker CD1B were lower in tuberculosis lung tissues than in normal lung. The conditioned medium from DCs cultured with retinol stimulated antimicrobial activity from M. tuberculosis-infected macrophages, as well as the expression of NPC2 in monocytes, which was blocked by specific inhibitors, including retinoic acid receptor inhibitor (RARi) or N,N-diethylaminobenzaldehyde (DEAB), an ALDH1A2 inhibitor. These results indicate that metabolism of vitamin A by DCs transactivates macrophage antimicrobial responses.IMPORTANCE Tuberculosis (TB) is the leading cause of death by a single infectious agent worldwide. One factor that contributes to the success of the microbe is the deficiency in immunomodulatory nutrients, such as vitamin A (retinol), which are prevalent in areas where TB is endemic. Clinical trials show that restoration of systemic retinol levels in active TB patients is ineffective in mitigating the disease; however, laboratory studies demonstrate that activation of the vitamin A pathway in Mycobacterium tuberculosis-infected macrophages triggers an antimicrobial response. Therefore, the goal of this study was to determine the link between host retinol levels and retinoic acid-mediated antimicrobial responses against M. tuberculosis By combining established in vitro models with in situ studies of lung tissue from TB patients, this study demonstrates that the innate immune system utilizes transcellular metabolism leading to activation between dendritic cells and macrophages as a means to combat the pathogen.
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Affiliation(s)
- Elliot W Kim
- Department of Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California, USA
- UCLA and Orthopaedic Hospital Department of Orthopaedic Surgery, The Orthopaedic Hospital Research Center, Los Angeles, Los Angeles, California, USA
| | - Avelino De Leon
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Zhichun Jiang
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Roxana A Radu
- Stein Eye Institute and Department of Ophthalmology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Adrian R Martineau
- Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom
| | - Edward D Chan
- Department of Medicine and Academic Affairs, National Jewish Health, Denver, Colorado, USA
| | - Xiyuan Bai
- Department of Medicine and Academic Affairs, National Jewish Health, Denver, Colorado, USA
| | - Wen-Lin Su
- Division of Pulmonary and Critical Care Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan
| | - Dennis J Montoya
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, California, USA
| | - Robert L Modlin
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
- Department of Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California, USA
| | - Philip T Liu
- Division of Dermatology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
- UCLA and Orthopaedic Hospital Department of Orthopaedic Surgery, The Orthopaedic Hospital Research Center, Los Angeles, Los Angeles, California, USA
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9
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Complex Immune Contextures Characterise Malignant Peritoneal Mesothelioma: Loss of Adaptive Immunological Signature in the More Aggressive Histological Types. J Immunol Res 2018; 2018:5804230. [PMID: 30510965 PMCID: PMC6231377 DOI: 10.1155/2018/5804230] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/18/2018] [Accepted: 06/24/2018] [Indexed: 01/01/2023] Open
Abstract
Malignant peritoneal mesothelioma (MpM), arising in the setting of local inflammation, is a rare aggressive tumour with a poor prognosis and limited therapeutic options. The three major MpM histological variants, epithelioid (E-MpMs), biphasic, and sarcomatoid MpMs (S-MpMs), are characterised by an increased aggressiveness and enhanced levels of EZH2 expression. To investigate the MpM immune contexture along the spectrum of MpM histotypes, an extended in situ analysis was performed on a series of 14 cases. Tumour-infiltrating immune cells and their functionality were assessed by immunohistochemistry, immunofluorescence, qRT-PCR, and flow cytometry analysis. MpMs are featured by a complex immune landscape modulated along the spectrum of MpM variants. Tumour-infiltrating T cells and evidence for pre-existing antitumour immunity are mainly confined to E-MpMs. However, Th1-related immunological features are progressively impaired in the more aggressive forms of E-MpMs and completely lost in S-MpM. Concomitantly, E-MpMs show also signs of active immune suppression, such as the occurrence of Tregs and Bregs and the expression of the immune checkpoint inhibitory molecules PD1 and PDL1. This study enriches the rising rationale for immunotherapy in MpM and points to the E-MpMs as the most immune-sensitive MpM histotypes, but it also suggests that synergistic interventions aimed at modifying the tumour microenvironment (TME) should be considered to make immunotherapy beneficial for these patients.
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Gollnick HPM, Buer J, Beissert S, Sunderkätter C. Verantwortlicher Umgang mit Antibiotika: Notwendigkeit der Antibiotikareduktion in der Aknetherapie. J Dtsch Dermatol Ges 2018; 14:1319-1327. [PMID: 27992149 DOI: 10.1111/ddg.13048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Der übermäßige oder unkritische weltweite Einsatz von Antibiotika in der Medizin hat die Ausbreitung von Antibiotikaresistenzen beschleunigt. In einigen Bereichen sind viele Antibiotika bei bakteriellen Infektionen, die zuvor noch gut auf antibakterielle Wirkstoffe reagierten, mittlerweile wirkungslos geworden. Dermatologen/Venerologen setzten orale und topische Antibiotika bei der Behandlung von Acne vulgaris routinemäßig ein, obwohl Akne weder eine infektiöse Erkrankung ist noch alleine durch das Propionibacterium getriggert wird. Vielmehr ist sie eine komplexe, chronische entzündliche Hauterkrankung, die durch verschiedene pathogenetische Faktoren wie follikuläre Hyperkeratose, erhöhter Sebumproduktion, bakterielle Proliferation und Entzündung zustande kommt. Folglich sollte eine erfolgreiche Therapie auf die Bekämpfung verschiedener pathogenetischer Faktoren und nicht nur auf die von Propionibacterium acnes abzielen. Daher wurden topische Retinoide und Benzoylperoxid als Mittel der ersten Wahl definiert. Monotherapien mit lokalen Antibiotika sollten insgesamt vermieden werden. Systemische Antibiotika der Tetrazyklin-Gruppe haben bei bestimmen Krankheitsstadien ihren Sinn, ihre Wirkung könnte aber eher auf der antientzündlichen als auf der antibiotischen Reaktion beruhen. Gesundheitsbehörden ermahnen alle Gesundheitsdienstleister, den Einsatz von Antibiotika einzuschränken. Das Nutzen-Risiko-Verhältnis muss bei der Entscheidung für oder gegen eine antibiotische Therapie bei einem einzelnen Patienten immer auch in Bezug auf das öffentliche Interesse am Erhalt der Wirksamkeit von Antibiotika abgewogen werden. Im Folgenden werden das aktuelle Krankheitskonzept zu Acne vulgaris und die sich daraus ableitenden Konsequenzen für den Einsatz von Antibiotika vorgestellt.
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11
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Lovászi M, Mattii M, Eyerich K, Gácsi A, Csányi E, Kovács D, Rühl R, Szegedi A, Kemény L, Ståhle M, Zouboulis CC, Eyerich S, Törőcsik D. Sebum lipids influence macrophage polarization and activation. Br J Dermatol 2017. [PMID: 28646583 DOI: 10.1111/bjd.15754] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND As lipids are known to regulate macrophage functions, it is reasonable to suppose that a sebocyte-macrophage axis mediated by sebum lipids may exist. OBJECTIVES To investigate if sebocytes could contribute to the differentiation, polarization and function of macrophages with their secreted lipids. METHODS Oil Red O lipid staining and Raman spectroscopy were used to assess the dermal lipid content and penetration. Immunohistochemistry was used to analyse the macrophage subsets. Human peripheral blood monocytes were differentiated in the presence of either supernatant from human SZ95 sebocytes or major sebum lipid components and activated with Propionibacterium acnes. Macrophage surface markers and their capacity to uptake fluorescein isothiocyanate-conjugated P. acnes were detected by fluorescence-activated cell sorting measurements. Cytokine protein levels were evaluated by enzyme-linked immunosorbent assay and Western blot analysis. RESULTS Sebaceous gland-rich skin had an increased dermal lipid content vs. sebaceous gland-poor skin to which all the tested sebum component lipids could contribute by penetrating the dermoepidermal barrier. Of the lipids, oleic acid and linoleic acid promoted monocyte differentiation into alternatively activated macrophages. Moreover, linoleic acid also had an anti-inflammatory effect in P. acnes-activated macrophages, inhibiting the secretion of interleukin (IL)-1β, IL-6 and tumour necrosis factor (TNF)-α. Squalene, palmitic acid, stearic acid and oleic acid augmented the secretion of IL-1β, even in the absence of P. acnes, whereas oleic acid had a selective effect of inducing IL-1β but downregulating IL-6 and TNF-α secretion. CONCLUSIONS Our results suggest a role for sebaceous glands in modulating innate immune responses via their secreted lipids that are of possible pathological and therapeutic relevance.
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Affiliation(s)
- M Lovászi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - M Mattii
- ZAUM - Centre for Allergy and Environment, Technische Universität and Helmholtz Centre Munich, Member of the German Centre for Lung Research (DZL), Munich, Germany
| | - K Eyerich
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - A Gácsi
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Szeged, Hungary
| | - E Csányi
- Institute of Pharmaceutical Technology and Regulatory Affairs, Faculty of Pharmacy, University of Szeged, Szeged, Hungary
| | - D Kovács
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - R Rühl
- MTA-DE Public Health Research Group of the Hungarian Academy of Sciences, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - A Szegedi
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Division of Dermatological Allergology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - L Kemény
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary
| | - M Ståhle
- Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - C C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Centre, Brandenburg Medical School Theodore Fontane, Dessau, Germany
| | - S Eyerich
- ZAUM - Centre for Allergy and Environment, Technische Universität and Helmholtz Centre Munich, Member of the German Centre for Lung Research (DZL), Munich, Germany
| | - D Törőcsik
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Unit of Dermatology and Venereology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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12
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Park AJ, Agak GW, Qin M, Hisaw LD, Pirouz A, Kao S, Marinelli LJ, Garbán HJ, Thiboutot D, Liu PT, Kim J. G2A Attenuates Propionibacterium acnes Induction of Inflammatory Cytokines in Human Monocytes. Ann Dermatol 2017; 29:688-698. [PMID: 29200756 PMCID: PMC5705349 DOI: 10.5021/ad.2017.29.6.688] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 01/06/2017] [Accepted: 02/13/2017] [Indexed: 12/20/2022] Open
Abstract
Background Acne vulgaris is a disease of the pilosebaceous unit characterized by increased sebum production, hyperkeratinization, and immune responses to Propionibacterium acnes (PA). Here, we explore a possible mechanism by which a lipid receptor, G2A, regulates immune responses to a commensal bacterium. Objective To elucidate the inflammatory properties of G2A in monocytes in response to PA stimulation. Furthermore, our study sought to investigate pathways by which lipids modulate immune responses in response to PA. Methods Our studies focused on monocytes collected from human peripheral blood mononuclear cells, the monocytic cell line THP-1, and a lab strain of PA. Our studies involved the use of enzyme-linked immunosorbent, Western blot, reverse transcription polymerase chain reaction, small interfering RNA (siRNA), and microarray analysis of human acne lesions in the measurements of inflammatory markers. Results G2A gene expression is higher in acne lesions compared to normal skin and is inducible by the acne therapeutic, 13-cis-retinoic acid. In vitro, PA induces both the Toll-like receptor 2-dependent expression of G2A as well as the production of the G2A ligand, 9-hydroxyoctadecadienoic acid, from human monocytes. G2A gene knockdown through siRNA enhances PA stimulation of interleukin (IL)-6, IL-8, and IL-1β possibly through increased activation of the ERK1/2 MAP kinase and nuclear factor kappa B p65 pathways. Conclusion G2A may play a role in quelling inflammatory cytokine response to PA, revealing G2A as a potential attenuator of inflammatory response in a disease associated with a commensal bacterium.
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Affiliation(s)
- Andrew J Park
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.,Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
| | - George W Agak
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Min Qin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Lisa D Hisaw
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Aslan Pirouz
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Stephanie Kao
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Laura J Marinelli
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Microbiology, Immunology, and Molecular Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Hermes J Garbán
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Diane Thiboutot
- Department of Dermatology, Penn State University College of Medicine, Hershey, PA, USA
| | - Philip T Liu
- Department of Orthopedic Surgery, Orthopedic Hospital Research Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Jenny Kim
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
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13
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Gollnick HPM, Buer J, Beissert S, Sunderkätter C. Antibiotic stewardship: The need to reduce antibiotics in acne treatment. J Dtsch Dermatol Ges 2017. [DOI: 10.1111/ddg.13048_e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Leccia MT, Auffret N, Poli F, Claudel JP, Corvec S, Dreno B. Topical acne treatments in Europe and the issue of antimicrobial resistance. J Eur Acad Dermatol Venereol 2015; 29:1485-92. [PMID: 25677763 DOI: 10.1111/jdv.12989] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 01/06/2015] [Indexed: 12/31/2022]
Abstract
Acne vulgaris (acne) is a chronic inflammatory disease of the sebaceous gland, characterized by follicular hyperkeratinization, excessive colonization by Propionibacterium acnes (P. acnes) as well as immune reactions and inflammation. Despite an armamentarium of topical treatments available including benzoyl peroxide, retinoids and azelaic acid, topical antibiotics in monotherapies, especially erythromycin and clindamycin, are still used in Europe to treat acne. This intensive use led to antimicrobial-resistant P. acnes and staphylococci strains becoming one of the main health issues worldwide. This is an update on the current topical acne treatments available in Europe, their mechanism of action, their potential to induce antimicrobial resistance and their clinical efficacy and safety.
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Affiliation(s)
- M T Leccia
- Clinique de Dermatologie, Allergologie et Photobiologie, CHU A Michallon, Grenoble, France
| | - N Auffret
- Hôpital Européen Georges Pompidou, Paris, France
| | - F Poli
- Hôpital Européen Georges Pompidou, Paris, France
| | | | - S Corvec
- Institut de Biologie des Hôpitaux de Nantes, Service de Bactériologie-Hygiène, CHU de Nantes, Nantes, France
| | - B Dreno
- Clinique de Dermatologie, University Hospital, Nantes, France
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15
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Wheelwright M, Kim EW, Inkeles MS, De Leon A, Pellegrini M, Krutzik SR, Liu PT. All-trans retinoic acid-triggered antimicrobial activity against Mycobacterium tuberculosis is dependent on NPC2. THE JOURNAL OF IMMUNOLOGY 2014; 192:2280-2290. [PMID: 24501203 DOI: 10.4049/jimmunol.1301686] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A role for vitamin A in host defense against Mycobacterium tuberculosis has been suggested through epidemiological and in vitro studies; however, the mechanism is unclear. In this study, we demonstrate that vitamin A-triggered antimicrobial activity against M. tuberculosis requires expression of NPC2. Comparison of monocytes stimulated with all-trans retinoic acid (ATRA) or 1,25-dihydroxyvitamin D3 (1,25D3), the biologically active forms of vitamin A and vitamin D, respectively, indicates that ATRA and 1,25D3 induce mechanistically distinct antimicrobial activities. Stimulation of primary human monocytes with ATRA did not result in expression of the antimicrobial peptide cathelicidin, which is required for 1,25D3 antimicrobial activity. In contrast, ATRA triggered a reduction in the total cellular cholesterol concentration, whereas 1,25D3 did not. Blocking ATRA-induced cellular cholesterol reduction inhibits antimicrobial activity as well. Bioinformatic analysis of ATRA- and 1,25D3-induced gene profiles suggests that NPC2 is a key gene in ATRA-induced cholesterol regulation. Knockdown experiments demonstrate that ATRA-mediated decrease in total cellular cholesterol content and increase in lysosomal acidification are both dependent upon expression of NPC2. Expression of NPC2 was lower in caseous tuberculosis granulomas and M. tuberculosis-infected monocytes compared with normal lung and uninfected cells, respectively. Loss of NPC2 expression ablated ATRA-induced antimicrobial activity. Taken together, these results suggest that the vitamin A-mediated antimicrobial mechanism against M. tuberculosis requires NPC2-dependent expression and function, indicating a key role for cellular cholesterol regulation in the innate immune response.
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Affiliation(s)
- Matthew Wheelwright
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, CA 90095
| | - Elliot W Kim
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, CA 90095
| | - Megan S Inkeles
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095
| | - Avelino De Leon
- UCLA and Orthopaedic Hospital Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, Los Angeles, CA 90095
| | - Matteo Pellegrini
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095
| | - Stephan R Krutzik
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, CA 90095
| | - Philip T Liu
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine at University of California, Los Angeles, CA 90095.,UCLA and Orthopaedic Hospital Department of Orthopaedic Surgery and the Orthopaedic Hospital Research Center, Los Angeles, CA 90095
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16
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Qin M, Pirouz A, Kim MH, Krutzik SR, Garbán HJ, Kim J. Propionibacterium acnes Induces IL-1β secretion via the NLRP3 inflammasome in human monocytes. J Invest Dermatol 2013; 134:381-388. [PMID: 23884315 PMCID: PMC4116307 DOI: 10.1038/jid.2013.309] [Citation(s) in RCA: 130] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 04/14/2013] [Accepted: 05/14/2013] [Indexed: 12/13/2022]
Abstract
Propionibacterium acnes induction of inflammatory responses is a major etiologic factor contributing to the pathogenesis of acne vulgaris. In particular, the IL-1 family of cytokines plays a critical role in both initiation of acne lesions and in the inflammatory response in acne. In this study, we demonstrated that human monocytes respond to P. acnes and secrete mature IL-1β partially via NLRP3 mediated pathway. When monocytes were stimulated with live P. acnes, caspase-1 and caspase-5 gene expression was upregulated; however, IL-1β secretion required only caspase-1 activity. P. acnes induced key inflammasome genes including NLRP1 and NLPR3. Moreover, silencing of NLRP3, but not NLRP1, expression by siRNA attenuated P. acnes-induced IL-1β secretion. The mechanism of P. acnes-induced NLRP3 activation and subsequent IL-1β secretion was found to involve potassium efflux. Finally, in acne lesions, mature caspase-1 and NLRP3 were detected around the pilosebaceous follicles and co-localized with tissue macrophages. Taken together, our results indicate that P. acnes triggers a key inflammatory mediator, IL-1β, via NLRP3 and caspase-1 activation, suggesting a role for inflammasome-mediated inflammation in acne pathogenesis.
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Affiliation(s)
- Min Qin
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Aslan Pirouz
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Myung-Hwa Kim
- Department of Dermatology, College of Medicine, Dankook University, Seoul, South Korea
| | - Stephan R Krutzik
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Hermes J Garbán
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Jenny Kim
- Division of Dermatology, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA; Department of Dermatology, Greater Los Angeles Healthcare Service Veterans Affairs, Los Angeles, California, USA.
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17
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Dispenza MC, Wolpert EB, Gilliland KL, Dai JP, Cong Z, Nelson AM, Thiboutot DM. Systemic isotretinoin therapy normalizes exaggerated TLR-2-mediated innate immune responses in acne patients. J Invest Dermatol 2012; 132:2198-205. [PMID: 22513780 PMCID: PMC3614089 DOI: 10.1038/jid.2012.111] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Retinoids are used in the treatment of inflammatory skin diseases and malignancies, but studies characterizing the in vivo actions of these drugs in humans are lacking. Isotretinoin is a pro-drug for all-trans retinoic acid that can induce long-term remissions of acne; however, its complete mechanism of action is unknown. We hypothesized that isotretinoin induces remission of acne by normalizing the innate immune response to the commensal bacterium P. acnes. Compared to normal subjects, peripheral blood monocytes from acne patients expressed significantly higher levels of TLR-2 and exhibited significantly greater induction of TLR-2 expression following P. acnes stimulation. Treatment of patients with isotretinoin significantly decreased monocyte TLR-2 expression and subsequent inflammatory cytokine response to P. acnes by one week of therapy. This effect was sustained six months following cessation of therapy, indicating that TLR-2 modulation may be involved in the durable therapeutic response to isotretinoin. This study demonstrates that isotretinoin exerts immunomodulatory effects in patients and sheds light on a potential mechanism for its long-term effects in acne. The modulation of TLR-2 expression on monocytes has important implications in other inflammatory disorders characterized by TLR-2 dysregulation.
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Affiliation(s)
- Melanie C Dispenza
- Department of Dermatology, Penn State University College of Medicine, Hershey, Pennsylvania 17033, USA
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18
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de Koning HD, Simon A, Zeeuwen PLJM, Schalkwijk J. Pattern recognition receptors in infectious skin diseases. Microbes Infect 2012; 14:881-93. [PMID: 22516809 DOI: 10.1016/j.micinf.2012.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 03/15/2012] [Accepted: 03/16/2012] [Indexed: 12/27/2022]
Abstract
During the last decade, multiple pattern recognition receptors (PRRs) have been identified. These are involved in the innate immune response against a plethora of pathogens. However, PRR functioning can also be detrimental, even during infections. This review discusses the current knowledge on PRRs that recognize dermatotropic pathogens, and potential therapeutical implications.
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Affiliation(s)
- Heleen D de Koning
- Department of Dermatology, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB, The Netherlands.
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19
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Caillon F, O’Connell M, Eady E, Jenkins G, Cove J, Layton A, Mountford A. Interleukin-10 secretion from CD14+ peripheral blood mononuclear cells is downregulated in patients with acne vulgaris. Br J Dermatol 2009; 162:296-303. [DOI: 10.1111/j.1365-2133.2009.09420.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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20
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Thiboutot D, Gollnick H, Bettoli V, Dréno B, Kang S, Leyden JJ, Shalita AR, Lozada VT, Berson D, Finlay A, Goh CL, Herane MI, Kaminsky A, Kubba R, Layton A, Miyachi Y, Perez M, Martin JP, Ramos-E-Silva M, See JA, Shear N, Wolf J. New insights into the management of acne: an update from the Global Alliance to Improve Outcomes in Acne group. J Am Acad Dermatol 2009; 60:S1-50. [PMID: 19376456 DOI: 10.1016/j.jaad.2009.01.019] [Citation(s) in RCA: 434] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2008] [Revised: 01/06/2009] [Accepted: 01/10/2009] [Indexed: 12/13/2022]
Abstract
The Global Alliance to Improve Outcomes in Acne published recommendations for the management of acne as a supplement to the Journal of the American Academy of Dermatology in 2003. The recommendations incorporated evidence-based strategies when possible and the collective clinical experience of the group when evidence was lacking. This update reviews new information about acne pathophysiology and treatment-such as lasers and light therapy-and relevant topics where published data were sparse in 2003 but are now available including combination therapy, revision of acne scarring, and maintenance therapy. The update also includes a new way of looking at acne as a chronic disease, a discussion of the changing role of antibiotics in acne management as a result of concerns about microbial resistance, and factors that affect adherence to acne treatments. Summary statements and recommendations are provided throughout the update along with an indication of the level of evidence that currently supports each finding. As in the original supplement, the authors have based recommendations on published evidence as much as possible.
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Affiliation(s)
- Diane Thiboutot
- Department of Dermatology, Pennsylvania State University College of Medicine, Hershey, USA.
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