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Sangaphunchai P, Kritsanaviparkporn C, Treesirichod A. Association Between Staphylococcus Aureus Colonization and Pediatric Atopic Dermatitis: A Systematic Review and Meta-Analysis. Indian J Dermatol 2023; 68:619-627. [PMID: 38371569 PMCID: PMC10868995 DOI: 10.4103/ijd.ijd_453_22] [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] [Indexed: 02/20/2024] Open
Abstract
Background Atopic dermatitis is a chronic inflammatory skin condition common in early childhood. Acute exacerbation is frequently associated with Staphylococcus aureus colonization. Aims and Objectives This study aims to explore the relationship between S. aureus skin and nasal colonization with pediatric atopic dermatitis. Methods A systematic review and meta-analysis were conducted by comparing atopic dermatitis patients aged ≤18 years and nondiseased controls. A random-effects model was used to obtain the pooled prevalence and odds ratio of S. aureus colonization at eczematous skin, nonlesional skin, and nasal cavity. Subgroup analyses for colonization with methicillin-resistant S. aureus were also evaluated. Results A total of 2,670 cases and 1,224 controls from 26 studies were included in the meta-analysis. S. aureus colonization at eczematous skin and nasal cavity is significantly higher in atopic dermatitis compared to control with odds ratios of 10.55 (95% confidence interval [CI]; 4.85-22.92, P < .001) and 2.38 (nasal cavity; 95% CI; 1.46-3.90, P < .001), respectively. The pooled prevalence of skin and nasal colonization were 55.0% (eczematous skin; 95% CI; 38.3-71.7), 23.3% (nonlesional skin; 95% CI; 12.6-33.9), and 56.3% (95% CI; 43.2-69.4), respectively. Methicillin-resistant S. aureus strain was obtained from the nares and eczematous skin with rates of 11.6% (95% CI; 6.5-16.7) and 8.5% (95% CI; 4.3-12.8), respectively. Conclusion Children with atopic dermatitis are more prone to skin and nasal colonization by S. aureus compared to nondiseased individuals.
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Affiliation(s)
- Phoomphut Sangaphunchai
- From the Department of Pediatrics, Faculty of Medicine, Srinakharinwirot University, Rangsit-Nakhonnayok Road, Ongkharak, Nakhonnayok, Thailand
| | - Chawan Kritsanaviparkporn
- From the Department of Pediatrics, Faculty of Medicine, Srinakharinwirot University, Rangsit-Nakhonnayok Road, Ongkharak, Nakhonnayok, Thailand
| | - Arucha Treesirichod
- From the Department of Pediatrics, Faculty of Medicine, Srinakharinwirot University, Rangsit-Nakhonnayok Road, Ongkharak, Nakhonnayok, Thailand
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Cabalín C, Pérez-Mateluna G, Iturriaga C, Camargo CA, Borzutzky A. Oral vitamin D modulates the epidermal expression of the vitamin D receptor and cathelicidin in children with atopic dermatitis. Arch Dermatol Res 2022; 315:761-770. [PMID: 36273083 DOI: 10.1007/s00403-022-02416-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 10/13/2022] [Indexed: 11/29/2022]
Abstract
Although vitamin D (VD) is known to have multiple effects on the skin and immunity, its effects on atopic dermatitis (AD) severity remain unclear. We investigated whether oral cholecalciferol (VD3) supplementation changes stratum corneum expression of the vitamin D receptor (vdr), and the epidermal alarmins Cathelicidin Antimicrobial Peptide (camp/LL-37) and Thymic Stromal Lymphopoietin (tslp) in children with AD. We conducted an open-label supplementation study with weekly oral VD3 for six weeks in children with AD. Serum 25-hydroxyvitamin D (25OHD), lesional Staphylococcus aureus colonization, and AD severity evaluated by SCORAD index were evaluated before and after supplementation. Tape stripping (TS) was performed on non-lesional and lesional skin to measure mRNA expression of vdr, camp, and tslp through RT-qPCR and LL-37 peptide by ELISA. Twenty-two children with moderate-severe AD received weekly oral VD3 for six weeks. Total serum 25OHD increased from 45.1 ± 23 to 93.5 ± 24.3 nmoL/L (p < 0.0001), while SCORAD decreased from 41.4 ± 13.5 to 31.5 ± 15.8 (p < 0.0001). After treatment, epidermal gene expression of camp increased significantly in non-lesional (p = 0.014) and lesional (p = 0.0007) tape stripping samples, while vdr only increased in lesional skin samples (p < 0.0001). LL-37 peptide increased significantly only in lesional skin samples (p = 0.008). Gene expression of tslp did not change after oral VD3 treatment. In children with AD, oral VD3 supplementation was associated with improved VD status and AD severity, as well as increased VDR and Cathelicidin expression in lesional skin, which provide mechanistic clues on its effects.
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Affiliation(s)
- Carolina Cabalín
- Translational Allergy and Immunology Laboratory, Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 446, 8330034, Santiago, Chile
| | - Guillermo Pérez-Mateluna
- Translational Allergy and Immunology Laboratory, Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 446, 8330034, Santiago, Chile
| | - Carolina Iturriaga
- Translational Allergy and Immunology Laboratory, Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 446, 8330034, Santiago, Chile
| | - Carlos A Camargo
- Department of Emergency Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Arturo Borzutzky
- Translational Allergy and Immunology Laboratory, Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Marcoleta 446, 8330034, Santiago, Chile. .,Millennium Institute on Immunology and Immunotherapy, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
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Mechanisms for control of skin immune function by the microbiome. Curr Opin Immunol 2021; 72:324-330. [PMID: 34537476 DOI: 10.1016/j.coi.2021.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 09/07/2021] [Indexed: 11/22/2022]
Abstract
The skin represents the largest area for direct contact between microbes and host immunocytes and is a site for constant communication between the host and this diverse and essential microbial community. Coagulase-negative staphylococci are an abundant bacterial genus on the human skin and are regulated through various mechanisms that include the epidermal barrier environment and innate and adaptive immune systems within the epidermis and dermis. In turn, some species and strains of these bacteria produce beneficial products that augment host immunity by exerting specifically targeted antimicrobial, anti-inflammatory, or anti-neoplastic activity while also promoting broad innate and adaptive immune responses. The use of selected skin commensals as a therapeutic has shown promise in recent human clinical trials. This emerging concept of bacteriotherapy is defining mechanisms of action and validating the dependence on the microbiome for maintenance of immune homeostasis.
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Ogonowska P, Gilaberte Y, Barańska-Rybak W, Nakonieczna J. Colonization With Staphylococcus aureus in Atopic Dermatitis Patients: Attempts to Reveal the Unknown. Front Microbiol 2021; 11:567090. [PMID: 33505363 PMCID: PMC7830525 DOI: 10.3389/fmicb.2020.567090] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 12/14/2020] [Indexed: 12/14/2022] Open
Abstract
Atopic dermatitis (AD) patients are massively colonized with Staphylococcus aureus (S. aureus) in lesional and non-lesional skin. A skin infection may become systemic if left untreated. Of interest, the incidence of multi-drug resistant S. aureus (MRSA) in AD patients is higher as compared to a healthy population, which makes treatment even more challenging. Information on the specific genetic background of S. aureus accompanying and/or causing AD flares would be of great importance in terms of possible treatment option development. In this review, we summarized the data on the prevalence of S. aureus in general in AD skin, and the prevalence of specific clones that might be associated with flares of eczema. We put our special interest in the presence and role of staphylococcal enterotoxins as important virulence factors in the epidemiology of AD-derived S. aureus. Also, we summarize the present and potentially useful future anti-staphylococcal treatment.
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Affiliation(s)
- Patrycja Ogonowska
- Laboratory of Molecular Diagnostics, Intercollegiate Faculty of Biotechnology University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
| | - Yolanda Gilaberte
- Department of Dermatology, University Hospital Miguel Servet, Zaragoza, Spain
| | - Wioletta Barańska-Rybak
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, Gdańsk, Poland
| | - Joanna Nakonieczna
- Laboratory of Molecular Diagnostics, Intercollegiate Faculty of Biotechnology University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
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Laviano E, Sanchez M, González-Nicolás MT, Palacian MP, López J, Gilaberte Y, Calmarza P, Rezusta A, Serrablo A. Surgical site infection in hepatobiliary surgery patients and its relationship with serum vitamin D concentration. Cir Esp 2020; 98:456-464. [PMID: 32723503 DOI: 10.1016/j.ciresp.2020.03.004] [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: 10/31/2019] [Revised: 03/03/2020] [Accepted: 03/09/2020] [Indexed: 10/23/2022]
Abstract
INTRODUCTION While several studies have examined the correlation between vitamin D concentrations and post-surgical nosocomial infections, this relationship has yet to be characterized in hepatobiliary surgery patients. We investigated the relationship between serum vitamin D concentration and the incidence of surgical site infection (SSI) in patients in our hepatobiliary surgery unit. METHODS Participants in this observational study were 321 successive patients who underwent the following types of interventions in the hepatobiliary surgery unit of our center over a 1-year period: cholecystectomy, pancreaticoduodenectomy, total pancreatectomy, segmentectomy, hepatectomy, hepaticojejunostomy and exploratory laparotomy. Serum vitamin D levels were measured upon admission and patients were followed up for 1 month. Mean group values were compared using a Student's T-test or Chi-squared test. Statistical analyses were performed using the Student's T-test, the Chi-squared test, or logistic regression models. RESULTS Serum concentrations >33.5 nmol/l reduced the risk of SSI by 50%. Out of the 321 patients analyzed, 25.8% developed SSI, mainly due to organ-cavity infections (incidence, 24.3%). Serum concentrations of over 33.5 nmol/l reduced the risk of SSI by 50%. CONCLUSIONS High serum levels of vitamin D are a protective factor against SSI (OR, 0.99). Our results suggest a direct relationship between serum vitamin D concentrations and SSI, underscoring the need for prospective studies to assess the potential benefits of vitamin D in SSI prevention.
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Affiliation(s)
- Estefania Laviano
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, España.
| | - María Sanchez
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, España
| | | | | | - Javier López
- Medicina Familiar y Comunitaria, Sector II, Zaragoza, España
| | | | - Pilar Calmarza
- Servicio de Bioquímica, Hospital Miguel Servet, Zaragoza, España
| | - Antonio Rezusta
- Servicio de Microbiología, Hospital Miguel Servet, Zaragoza, España
| | - Alejandro Serrablo
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, España
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Laviano E, Sanchez Rubio M, González-Nicolás MT, Palacian MP, López J, Gilaberte Y, Calmarza P, Rezusta A, Serrablo A. Association between preoperative levels of 25-hydroxyvitamin D and hospital-acquired infections after hepatobiliary surgery: A prospective study in a third-level hospital. PLoS One 2020; 15:e0230336. [PMID: 32214325 PMCID: PMC7098583 DOI: 10.1371/journal.pone.0230336] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 02/26/2020] [Indexed: 12/17/2022] Open
Abstract
Introduction Evidence implicates vitamin D deficiency in poorer outcomes and increased susceptibility to hospital-acquired infections (HAIs). This study examined the association between serum vitamin D levels and HAIs in a population of hepatobiliary surgery patients. Methods Participants in this prospective analytical observational study were patients who underwent hepatobiliary surgery in a tertiary hospital in Aragon, Spain, between February 2018 and March 2019. Vitamin D concentrations were measured at admission and all nosocomial infections during hospitalization and after discharge were recorded. Results The mean 25-hydroxyvitamin D concentration of the study population (n = 301) was 38.56 nmol/L, which corresponds to vitamin D deficiency. Higher vitamin D concentrations were associated with a decreased likelihood of developing a HAI in general (p = 0.014), and in particularly surgical site infection (p = 0.026). The risk of HAI decreased by 34% with each 26.2-nmol/L increase in serum vitamin D levels. Conclusions Vitamin D levels may constitute a modifiable risk factor for postoperative nosocomial infections in hepatobiliary surgery patients.
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Affiliation(s)
- Estefania Laviano
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, Spain
- * E-mail:
| | - Maria Sanchez Rubio
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, Spain
| | | | | | - Javier López
- Medicina Familiar y Comunitaria, Hospital Miguel Servet, Zaragoza, Spain
| | | | - Pilar Calmarza
- Servicio de Bioquímica, Hospital Miguel Servet, Zaragoza, Spain
| | - Antonio Rezusta
- Servicio de Microbiología, Hospital Miguel Servet, Zaragoza, Spain
| | - Alejandro Serrablo
- Servicio de Cirugía General y Digestiva, Hospital Miguel Servet, Zaragoza, Spain
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Hattangdi-Haridas SR, Lanham-New SA, Wong WHS, Ho MHK, Darling AL. Vitamin D Deficiency and Effects of Vitamin D Supplementation on Disease Severity in Patients with Atopic Dermatitis: A Systematic Review and Meta-Analysis in Adults and Children. Nutrients 2019; 11:nu11081854. [PMID: 31405041 PMCID: PMC6722944 DOI: 10.3390/nu11081854] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/05/2019] [Accepted: 08/06/2019] [Indexed: 12/16/2022] Open
Abstract
Research has investigated 25-hydroxyvitamin D (25(OH)D) levels in the Atopic Dermatitis (AD) population, as well as changes in AD severity after vitamin D (VitD) supplementation. We performed an up-to-date systematic review and meta-analysis of these findings. Electronic searches of MEDLINE, EMBASE and COCHRANE up to February 2018 were performed. Observational studies comparing 25(OH)D between AD patients and controls, as well as trials documenting baseline serum 25(OH)D levels and clinical severity by either SCORAD/EASI scores, were included. Of the 1085 articles retrieved, sixteen were included. A meta-analysis of eleven studies of AD patients vs. healthy controls (HC) found a mean difference of −14 nmol/L (95% CI −25 to −2) for all studies and −16 nmol/L (95% CI −31 to −1) for the paediatric studies alone. A meta-analysis of three VitD supplementation trials found lower SCORAD by −11 points (95% CI −13 to −9, p < 0.00001). This surpasses the Minimal Clinical Important Difference for AD of 9.0 points (by 22%). There were greater improvements in trials lasting three months and the mean weighted dose of all trials was 1500–1600 IU/daily. Overall, the AD population, especially the paediatric subset, may be at high-risk for lower serum 25(OH)D. Supplementation with around 1600 IU/daily results in a clinically meaningful AD severity reduction.
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Affiliation(s)
- Sonal R Hattangdi-Haridas
- Department of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Susan A Lanham-New
- Department of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK
| | - Wilfred Hing Sang Wong
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Marco Hok Kung Ho
- Department of Paediatrics and Adolescent Medicine, Queen Mary Hospital, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Andrea L Darling
- Department of Nutritional Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, GU2 7XH, UK.
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Huang CM, Lara-Corrales I, Pope E. Effects of Vitamin D levels and supplementation on atopic dermatitis: A systematic review. Pediatr Dermatol 2018; 35:754-760. [PMID: 30284328 DOI: 10.1111/pde.13639] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic inflammatory skin condition affecting 5%-20% of children worldwide. Studies suggested both a correlation between serum vitamin D (VD) levels and AD severity and a therapeutic potential role for VD supplementation. OBJECTIVES To determine whether serum VD levels correlate with AD severity and the effects of supplementation for disease improvement in children. DATA SOURCES Ovid MEDLINE, EMBASE, and Cochrane Library databases were searched. STUDY SELECTION Publications with children 0-18 years old with AD and data evaluating effects of VD levels or supplementation on AD severity were included. DATA EXTRACTION Author, year, inclusion criteria, study design, location, age, VD levels, VD supplementation regimens, and baseline and final disease severities were extracted. RESULTS Of the 21 included publications, 15, 5, and 1 evaluated VD level, VD supplementation, and both factors with disease severity, respectively. There were 4 randomized control trials (RCTs), 5 cohort, 6 case-control, and 6 cross-sectional studies. A significant inverse correlation between VD level and severity was described in 62.5% (10/16) of studies. There were 67% (4/6) that reported a significant improvement in AD severity with supplementation. LIMITATIONS Studies meeting inclusion criteria were limited. Furthermore, papers were heterogeneous in terms of location, season, and VD supplementation regimen. Language and publication bias was another potential limitation. CONCLUSION In children, the majority of existing literature confirmed a link between serum VD levels and AD severity. Weak evidence was found supporting improvement of AD with VD supplementation. Future large-scale studies are needed to support our findings.
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Affiliation(s)
| | - Irene Lara-Corrales
- Section of Dermatology, Division of Pediatric Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Elena Pope
- Section of Dermatology, Division of Pediatric Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Amon U, Baier L, Yaguboglu R, Ennis M, Holick MF, Amon J. Serum 25-hydroxyvitamin D levels in patients with skin diseases including psoriasis, infections, and atopic dermatitis. DERMATO-ENDOCRINOLOGY 2018; 10:e1442159. [PMID: 29904567 PMCID: PMC5997090 DOI: 10.1080/19381980.2018.1442159] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 02/13/2018] [Indexed: 02/07/2023]
Abstract
The pathogenetic role of vitamin D as well as its clinical correlation in inflammatory skin diseases is still uncertain. This study aimed to compare serum levels of 25(OH) vitamin D (calcidiol) in outpatients suffering from different skin diseases using the same laboratory method in one study. In routine serum samples of 1,532 patients from the previous 12 months we identified retrospectively 180 (mean age 49.4 years, 80 female, 100 male) and 205 (mean age 36.3 years, 116 female, 89 male) patients with psoriasis (PSO) and atopic dermatitis (AD), respectively. Clinical disease activity and quality of life was evaluated using Physicians Global Assessment Scores (PGA), Dermatology Life Quality Index (DLQI), and a Visual Analog Scale for pruritus in AD, respectively. The median 25(OH)D serum level of all patients (22.97 ng/mL, range 2.61–96.0, n = 1,461) was significantly lower in comparison to healthy controls (41.6 ng/mL, range 16.9–77.57, p < 0.0001, n = 71). In PSO and AD we measured 21.05 ng/mL (44% < 20 ng/mL) and 22.7 ng/mL (39% < 20 ng/mL), respectively (p = 0.152). Among all subgroups, patients with severe acute or chronic infectious skin diseases had the lowest median 25(OH)D serum levels (17.11 ng/mL, n = 94, 66% <20 ng/mL, p < 0,001 vs. AD, p = 0,007 vs. PSO). For PSO and AD there was no significant correlation between 25(OH)D levels and PGA scores and DLQI values, respectively, or the extent of pruritus in AD. 25(OH)D serum levels in inflammatory skin diseases might correlate more with the type of disease and the degree of inflammation than with clinical activity itself.
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Affiliation(s)
- Ulrich Amon
- International Centre for Skin Diseases DermAllegra, Am Markgrafenpark 6, Pommelsbrunn-Hohenstadt, Germany
| | - Laura Baier
- International Centre for Skin Diseases DermAllegra, Am Markgrafenpark 6, Pommelsbrunn-Hohenstadt, Germany
| | - Raul Yaguboglu
- International Centre for Skin Diseases DermAllegra, Am Markgrafenpark 6, Pommelsbrunn-Hohenstadt, Germany
| | - Madeleine Ennis
- Centre for Experimental Medicine, Queens University of Belfast, University Road, Belfast, Northern Ireland, United Kingdom
| | - Michael F Holick
- Endocrinology, Nutrition and Diabetes, Department of Medicine, Heliotherapy, Light, and Skin Research Center, Boston University Medical Center, 801 Massachusetts Ave, Boston, MA, USA
| | - Julian Amon
- International Centre for Skin Diseases DermAllegra, Am Markgrafenpark 6, Pommelsbrunn-Hohenstadt, Germany
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Umar M, Sastry KS, Al Ali F, Al-Khulaifi M, Wang E, Chouchane AI. Vitamin D and the Pathophysiology of Inflammatory Skin Diseases. Skin Pharmacol Physiol 2018; 31:74-86. [DOI: 10.1159/000485132] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 11/07/2017] [Indexed: 12/13/2022]
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Liu XY, Xu LZ, Luo XQ, Geng XR, Liu ZQ, Yang LT, Yang G, Chen S, Liu ZG, Li HB, Yang LT, Luan TG, Yang PC. Forkhead box protein-3 (Foxp3)-producing dendritic cells suppress allergic response. Allergy 2017; 72:908-917. [PMID: 27861999 DOI: 10.1111/all.13088] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2016] [Indexed: 12/28/2022]
Abstract
BACKGROUND The generation of the tolerogenic dendritic cells (DC) is not fully understood yet. Forkhead box protein-3 (Foxp3) is an important molecule in the immune tolerance. This study tests a hypothesis that DCs express Foxp3, which can be upregulated by Staphylococcal enterotoxin B (SEB). METHODS The expression of Foxp3 by DCs was evaluated by real-time RT-PCR, Western blotting, flow cytometry, and chromatin immunoprecipitation assay. RESULTS We observed that mice treated with SEB at 0.25-0.5 μg/mouse showed high frequencies of transforming growth factor (TGF)-β-producing CD4+ T cells and TGF-β-producing DCs in the intestine, while the IL-4+ CD4+ T cells and TIM4+ DCs were dominated in the intestine in mice treated with SEB at 1-10 μg/mouse. Treating DCs with SEB in the culture induced high levels of Foxp3 at the TGF-β promoter locus. The function of Foxp3 was blocked by STAT6 (signal transducer and activator transcription-6); the latter was induced by exposing DCs to SEB in the culture at doses of 100-400 ng/ml. Treating allergic mice with specific immunotherapy (SIT) together with SEB significantly promoted the therapeutic effects on the allergic responses than treating with SIT alone. CONCLUSION Dendritic cells have the capacity to express Foxp3, which can be upregulated by exposure to SEB.
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Affiliation(s)
- X.-Y. Liu
- MOE Key Laboratory of Aquatic Product Safety; School of Life Sciences; School of Marine Sciences; Sun Yat-Sen University; Guangzhou 510275 China
| | - L.-Z. Xu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - X.-Q. Luo
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - X.-R. Geng
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - Z.-Q. Liu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - L.-T. Yang
- Department of Allergy; Affiliated Luohu Hospital of Shenzhen University; Shenzhen China
| | - G. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
| | - S. Chen
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - Z.-G. Liu
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
| | - H.-B. Li
- Department of Otolaryngology; Head and Neck Surgery; Affiliated Eye, Ear; Nose and Throat Hospital; Fudan University; Shanghai China
| | - L.-T. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
- Shenzhen ENT Institute; Longgang ENT Hospital; Shenzhen China
- Brain Body Institute; McMaster University; Hamilton ON Canada
| | - T.-G. Luan
- MOE Key Laboratory of Aquatic Product Safety; School of Life Sciences; School of Marine Sciences; Sun Yat-Sen University; Guangzhou 510275 China
| | - P.-C. Yang
- The Research Center of Allergy and Immunology; Shenzhen University School of Medicine; Shenzhen China
- the State Key Laboratory of Respiratory Disease at Shenzhen University; Shenzhen China
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Benito D, Aspiroz C, Gilaberte Y, Sanmartín R, Hernández-Martin Á, Alonso M, Gómez P, Lozano C, Torres C. Genetic lineages and antimicrobial resistance genotypes in Staphylococcus aureus from children with atopic dermatitis: detection of clonal complexes CC1, CC97 and CC398. J Chemother 2016; 28:359-66. [PMID: 26027683 DOI: 10.1179/1973947815y.0000000044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
The objective was to analyse the genetic lineages of Staphylococcus aureus recovered from nasal and skin samples of atopic dermatitis (AD) paediatric patients, and to characterize the antimicrobial resistance phenotype-genotype and the immune-evasion-cluster (IEC) type of isolates. Forty S. aureus isolates from 35 patients (skin: 26; nasal samples: 14) were characterized. Isolates were submitted to spa-, agr- and multilocus sequence typing. All S. aureus strains analyzed were methicillin-susceptible (MSSA). High genetic diversity was detected among the 40 MSSA isolates (especially among skin isolates), with detection of 27 different spa-types, 20 sequence-types and 16 clonal complexes (CCs). Lineages CC30 and CC5 were predominant among nasal isolates (71% vs 23% skin). Thirteen different CCs were detected among skin isolates, with detection of clades CC1, CC9 and CC398. Antimicrobial resistance rates detected were higher in skin than in nasal isolates, especially for macrolides, aminoglycosides, lincosamides and mupirocin. MSSA strains were characterized into five IEC-types, being A, B and F the predominant ones. MSSA strains of lineages CC45 and CC5 were detected in almost all cases in AD patients with severe Scoring Atopic Dermatitis (SCORAD) and lineages CC8, and CC30 in those with mild or moderate one. As conclusion, high-clonal-diversity was detected among MSSA from AD patients, especially in skin-isolates. Colonization with S. aureus of some CCs seems more associated with AD severity than other lineages.
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Affiliation(s)
- Daniel Benito
- a Area of Biochemistry and Molecular Biology , University of La Rioja , Logroño , Spain
| | - Carmen Aspiroz
- b Department of Microbiology , Hospital Royo Villanova , Zaragoza , Spain
| | - Yolanda Gilaberte
- c Department of Dermatology , Hospital San Jorge, Huesca , Spain.,d Aragon Health Sciences Institute , Zaragoza , Spain
| | - Rosalía Sanmartín
- c Department of Dermatology , Hospital San Jorge, Huesca , Spain.,d Aragon Health Sciences Institute , Zaragoza , Spain
| | - Ángela Hernández-Martin
- e Department of Dermatology , Hospital Infantil Universitario del Niño Jesús , Madrid , Spain
| | - Mercedes Alonso
- f Department of Microbiology , Hospital Infantil del Niño Jesús , Madrid , Spain
| | - Paula Gómez
- a Area of Biochemistry and Molecular Biology , University of La Rioja , Logroño , Spain
| | - Carmen Lozano
- a Area of Biochemistry and Molecular Biology , University of La Rioja , Logroño , Spain
| | - Carmen Torres
- a Area of Biochemistry and Molecular Biology , University of La Rioja , Logroño , Spain
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13
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Quirk SK, Rainwater E, Shure AK, Agrawal DK. Vitamin D in atopic dermatitis, chronic urticaria and allergic contact dermatitis. Expert Rev Clin Immunol 2016; 12:839-47. [PMID: 27014952 DOI: 10.1586/1744666x.2016.1171143] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Vitamin D influences allergen-induced pathways in the innate and adaptive immune system, and its potential immunomodulatory role in allergic skin disorders has been explored. This comprehensive review article provides an overview of the role of vitamin D in three common dermatologic conditions: atopic dermatitis (AD), chronic urticaria, and allergic contact dermatitis (ACD). Whereas the literature regarding vitamin D and AD has resulted in mixed findings, several studies have described an inverse relationship between vitamin D levels and AD severity, and improvement in AD with vitamin D supplementation. Similarly, several studies report an inverse relationship between vitamin D levels and severity of chronic urticaria. Although current research in humans remains limited, an increased likelihood of ACD has been demonstrated in vitamin D-deficient mice. Additional well-designed clinical trials will be necessary to determine whether vitamin D supplementation should be recommended for prevention or adjuvant treatment of these common dermatologic conditions.
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Affiliation(s)
- Shannon K Quirk
- a Department of Clinical & Translational Science , Creighton University School of Medicine , Omaha , NE , USA
| | - Ellecia Rainwater
- a Department of Clinical & Translational Science , Creighton University School of Medicine , Omaha , NE , USA
| | - Anna K Shure
- a Department of Clinical & Translational Science , Creighton University School of Medicine , Omaha , NE , USA
| | - Devendra K Agrawal
- a Department of Clinical & Translational Science , Creighton University School of Medicine , Omaha , NE , USA
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14
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Mesquita KDC, Igreja ACDSM, Costa IMC. Parathyroid Hormone: An Overlooked Variable in Atopic Dermatitis and Vitamin D Research. Pediatr Dermatol 2016; 33:115-6. [PMID: 26758099 DOI: 10.1111/pde.12708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kleyton de Carvalho Mesquita
- Universidade de Brasília/Hospital Universitário de Brasília, Brasília, DF, Brazil. .,Instituto Avançado de Cirurgia Plástica e Dermatologia, Brasília, DF, Brazil.
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