Staphylococcus Aureus Colonization In Atopic Dermatitis Patients

2019 ◽  
Vol 4 (3) ◽  
pp. 01-08
Author(s):  
Nora Harfouch ◽  
Fouz Hassan
Keyword(s):  
Staphylococcus Aureus ◽  
Atopic Dermatitis ◽  
Skin Diseases ◽  
Normal Skin ◽  
Skin Barrier ◽  
Nasal Colonization ◽  
Cutaneous Infections ◽  
Barrier Defect ◽  
Inflammatory Skin Disorder ◽  
Colonization Rates

Background:Atopic dermatitis (AD) is a common chronic inflammatory skin disorder that induces several symptoms including pruritus and dryness, and is often associated with secondary cutaneous infections. AD is considered to be one of the most prevalent and studied skin diseases yet poorly understood, and its pathophysiology remains obscure. Even though other skin diseases (such as psoriasis) share the same pathologic factor -skin barrier defect - with atopic dermatitis, patients diagnosed with those diseases don't suffer infectious exacerbations like atopic patients do. Aim: Although many international researches have already discussed the relationship between staphylococcus aureus and AD, no studies about this subject in the Arabic region was documented. The aim of our study is to compare staphylococcus aureus colonization rates and densities between atopic dermatitis patients and non-atopic subjects, and to relate the colonization to the severity and duration of the disease. Materials and methods: This observational analytic study included 200 participants (99 diagnosed with atopic dermatitis and 101 control subjects without atopic dermatitis); nasal and skin swabs (lesional and non-lesional) were collected from patients, while nasal and only normal skin swabs were collected from controls. Positive swabs were assessed to determine the density of colonization. Results: 57.6% of patients had nasal colonization, 56.6% had lesional colonization and 30.3% had normal skin colonization. Nasal colonization rates and densities were higher in the patients group. We detected a correlation between colonization and severity of eczema, but no correlation between colonization and duration of the disease was detected. Conclusion: The high rates and densities of staphylococcus aureus colonization in lesional skin of atopic dermatitis patients point out the role of these organisms in the pathophysiology of the disease, put antibiotics on the treatment list of atopic dermatitis and explain infectious features in AD exacerbations.

scholarly journals JAK-STAT Inhibitors in Atopic Dermatitis from Pathogenesis to Clinical Trials Results

2020 ◽  
Vol 8 (11) ◽  
pp. 1743 ◽  
Author(s):  
Krzysztof Szalus ◽  
Magdalena Trzeciak ◽  
Roman J. Nowicki
Keyword(s):  
Atopic Dermatitis ◽  
Sleep Disturbances ◽  
Pediatric Population ◽  
Adult Population ◽  
Skin Barrier ◽  
Immunosuppressive Drugs ◽  
Common Disease ◽  
Microbial Dysbiosis ◽  
Barrier Defect ◽  
Inflammatory Skin Disorder

A common disease worldwide is known as atopic dermatitis (AD), named also as atopic eczema, which is a chronic recurrent complex inflammatory skin disorder. It affects 2–10% of the adult population and up to 20% of the pediatric population. The clinical AD picture appears in typically localized eczema and dry skin, and is dominated by a persistent pruritus followed by sleep disturbances. AD strongly impacts on the quality of life of AD patients and their families as well as on social and economic aspects. The pathogenesis of the disease is complex and consists of multiple interactions between immunological disturbances, skin barrier defect, and microbial dysbiosis with environmental influences. The treatment of AD reflects the pathogenetic disorders, starting from basic emollient therapy, and goes to topical anti-inflammatory regimens followed by phototherapy, systemic immunosuppressive drugs, and new biologic immunomodulators. This paper will thus summarize the novel collection of biological treatment JAK-STAT inhibitors dedicated to AD.

scholarly journals Oxidative Stress in Atopic Dermatitis

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Hongxiu Ji ◽  
Xiao-Kang Li
Keyword(s):  
Oxidative Stress ◽  
Atopic Dermatitis ◽  
Skin Diseases ◽  
Treatment Strategies ◽  
Scientific Progress ◽  
Skin Barrier ◽  
Skin Aging ◽  
Barrier Defect ◽  
Pruritic Skin

Atopic dermatitis (AD) is a chronic pruritic skin disorder affecting many people especially young children. It is a disease caused by the combination of genetic predisposition, immune dysregulation, and skin barrier defect. In recent years, emerging evidence suggests oxidative stress may play an important role in many skin diseases and skin aging, possibly including AD. In this review, we give an update on scientific progress linking oxidative stress to AD and discuss future treatment strategies for better disease control and improved quality of life for AD patients.

scholarly journals Role of Macrophages in the Pathogenesis of Atopic Dermatitis

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
Sadaf Kasraie ◽  
Thomas Werfel
Keyword(s):  
Atopic Dermatitis ◽  
Skin Diseases ◽  
Inflammatory Diseases ◽  
Skin Barrier ◽  
Cellular Level ◽  
Skin Barrier Function ◽  
Inflammatory Skin Diseases ◽  
Cutaneous Infections ◽  
Inflammatory Phase ◽  
New Findings

Atopic dermatitis (AD) is one of the most common and most intensively studied chronic inflammatory skin diseases. Several cofactors, such as an impaired skin barrier function, modifications of the immune system, and a complex genetic background, direct the course of AD. Within this complex network, macrophages play a pivotal role in enhanced susceptibility to cutaneous infections and act as central connecting components in the pathogenesis of AD on the cellular level. In AD, macrophages are known to accumulate in acutely and chronically inflamed skin. During the early and short inflammatory phase, macrophages exert proinflammatory functions like antigen-presenting phagocytosis and the production of inflammatory cytokines and growth factors that facilitate the resolution of inflammation. However, persistence of pro-inflammatory activity and altered function of macrophages result in the development of chronic inflammatory diseases such as AD. The exact mechanism of macrophages activation in these processes is not yet completely understood. Further studies should be performed to clarify the dysregulated mechanism of macrophages activation in AD, and this would allow us to target these cells with versatile functions for therapeutic purpose and improve and control the disease. In this paper, we highlight the new findings on dysregulated function of macrophages and the importance of these cells in the pathogenesis of AD in general and the contribution of these cells in enhanced susceptibility against microbial infections in particular.

Skin and Nasal Colonization with Methicillin Resistant Staphylococcus Aureus in Children with Atopic Dermatitis

2021 ◽  
Vol 30 (1) ◽  
pp. 39-44
Author(s):  
Tamer Mohamed ◽  
Izzedin Abushaikha
Keyword(s):  
Staphylococcus Aureus ◽  
Atopic Dermatitis ◽  
Armed Forces ◽  
Skin Lesions ◽  
Molecular Diagnostic ◽  
Molecular Diagnostic Techniques ◽  
Nasal Colonization ◽  
Dermatology Clinic ◽  
Vitek 2 ◽  
Mrsa Colonization

Background: Atopic dermatitis (AD) is a chronic inflammatory skin disease with multifactorial etiologies, Staphylococcus aureus (S.aureus) and methicillinresistant S.aureus (MRSA) that naturally colonize skin and nose are prevalent among children with AD. Objectives: was to determine the prevalence of S.aureus and MRSA colonization of skin lesions and nose of AD children. Methodology: 40 children diagnosed as AD from Dermatology Clinic of Najran Armed Forces Hospital, Saudi Arabia, were included in the study; separate swabs from skin lesions & nose of each AD patient were tested for S.aureus and MRSA colonization using the conventional culture based Vitek 2 system and the molecular BD Max MRSA XT assay. Results: Using the conventional Vitek 2 system, the prevalence of skin and nasal colonization with S.aureus in AD patients were 25% and 30% respectively while skin and nasal colonization with MRSA were 7.5% and 7.5% respectively, the BD Max MRSA XT assay identified correctly S.aureus with overall 96 % sensitivity, 100 % specificity and 98 % diagnostic accuracy and identified 100 % of MRSA strains. Conclusion: The increase in prevalence of skin and nasal colonization with S.aureus and MRSA among AD children raises the concern about importance of the accurate and rapid molecular diagnostic techniques for preventing the potential risk of MRSA transmission

Colonization with Staphylococcus aureus in patients with hand eczema: Prevalence and association with severity, atopic dermatitis, subtype and nasal colonization

2020 ◽  
Vol 83 (6) ◽  
pp. 442-449
Author(s):  
Line B. Nørreslet ◽  
Sofie M. Edslev ◽  
Paal S. Andersen ◽  
Frederik Plum ◽  
Jette Holt ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Atopic Dermatitis ◽  
Hand Eczema ◽  
Nasal Colonization

scholarly journals Exploring the Role of Staphylococcus Aureus Toxins in Atopic Dermatitis

Toxins ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 321 ◽  
Author(s):  
Fabio Seiti Yamada Yoshikawa ◽  
Josenilson Feitosa de Lima ◽  
Maria Notomi Sato ◽  
Yasmin Álefe Leuzzi Ramos ◽  
Valeria Aoki ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Atopic Dermatitis ◽  
Complex Disease ◽  
Skin Barrier ◽  
Inflammatory Skin Disease ◽  
Innate And Adaptive Immunity ◽  
Concise Review ◽  
Intense Pruritus ◽  
Immunological Factors

Atopic dermatitis (AD) is a chronic and inflammatory skin disease with intense pruritus and xerosis. AD pathogenesis is multifactorial, involving genetic, environmental, and immunological factors, including the participation of Staphylococcus aureus. This bacterium colonizes up to 30–100% of AD skin and its virulence factors are responsible for its pathogenicity and antimicrobial survival. This is a concise review of S. aureus superantigen-activated signaling pathways, highlighting their involvement in AD pathogenesis, with an emphasis on skin barrier disruption, innate and adaptive immunity dysfunction, and microbiome alterations. A better understanding of the combined mechanisms of AD pathogenesis may enhance the development of future targeted therapies for this complex disease.

scholarly journals Role of Staphylococcus aureus Nasal Colonization in Atopic Dermatitis in Infants

2009 ◽  
Vol 163 (8) ◽  
Author(s):  
Ankie Lebon ◽  
Joost A. M. Labout ◽  
Henri A. Verbrugh ◽  
Vincent W. V. Jaddoe ◽  
Albert Hofman ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Atopic Dermatitis ◽  
Nasal Colonization

scholarly journals Role of Antimicrobial Peptides in Skin Barrier Repair in Individuals with Atopic Dermatitis

2020 ◽  
Vol 21 (20) ◽  
pp. 7607
Author(s):  
Hai Le Thanh Nguyen ◽  
Juan Valentin Trujillo-Paez ◽  
Yoshie Umehara ◽  
Hainan Yue ◽  
Ge Peng ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Antimicrobial Peptides ◽  
Tight Junction ◽  
Tight Junctions ◽  
Skin Barrier ◽  
Physical Barrier ◽  
Cutaneous Infections ◽  
Barrier Disruption ◽  
Barrier Repair ◽  
Skin Barrier Repair

Atopic dermatitis (AD) is a common chronic inflammatory skin disease that exhibits a complex interplay of skin barrier disruption and immune dysregulation. Patients with AD are susceptible to cutaneous infections that may progress to complications, including staphylococcal septicemia. Although most studies have focused on filaggrin mutations, the physical barrier and antimicrobial barrier also play critical roles in the pathogenesis of AD. Within the physical barrier, the stratum corneum and tight junctions play the most important roles. The tight junction barrier is involved in the pathogenesis of AD, as structural and functional defects in tight junctions not only disrupt the physical barrier but also contribute to immunological impairments. Furthermore, antimicrobial peptides, such as LL-37, human β-defensins, and S100A7, improve tight junction barrier function. Recent studies elucidating the pathogenesis of AD have led to the development of barrier repair therapy for skin barrier defects in patients with this disease. This review analyzes the association between skin barrier disruption in patients with AD and antimicrobial peptides to determine the effect of these peptides on skin barrier repair and to consider employing antimicrobial peptides in barrier repair strategies as an additional approach for AD management.

scholarly journals Persistence of Nasal Colonization with Livestock-Associated Methicillin-Resistant Staphylococcus aureus in Pig Farmers after Holidays from Pig Exposure

2012 ◽  
Vol 78 (11) ◽  
pp. 4046-4047 ◽  
Author(s):  
Robin Köck ◽  
Bea Loth ◽  
Mahir Köksal ◽  
Josef Schulte-Wülwer ◽  
Jürgen Harlizius ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Direct Contact ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Nasal Colonization ◽  
Methicillin Resistant ◽  
Content Type ◽  
Mrsa Colonization ◽  
Colonization Rates

ABSTRACTLivestock-associated methicillin-resistantStaphylococcus aureus(LA-MRSA) is frequently transmitted from pigs to farmers. This study analyzed whether an absence from direct contact with pigs during holidays had an impact on nasal MRSA colonization rates of pig farmers. Overall, 59% of the farmers did not clear MRSA colonization during their leave.

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