scholarly journals Interplay Between Skin Microbiota Dysbiosis and the Host Immune System in Psoriasis: Potential Pathogenesis

2021 ◽  
Vol 12 ◽  
Author(s):  
Xiaoqian Liang ◽  
Caixin Ou ◽  
Jiayi Zhuang ◽  
Jinsheng Li ◽  
Fangfei Zhang ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Immune System ◽  
Skin Diseases ◽  
Cell Populations ◽  
Host Immune System ◽  
Skin Microbiota ◽  
Inflammatory Skin Diseases ◽  
Immune Mediated ◽  
Underlying Pathogenesis ◽  
Novel Therapeutic

Psoriasis is a multifactorial immune-mediated disease. The highly effective and eligible treatment for psoriasis is limited, for its specific pathogenesis is incompletely elucidated. Skin microbiota is a research hotspot in the pathogenesis of immune-mediated inflammatory skin diseases nowadays, and it may have significant involvement in the provocation or exacerbation of psoriasis with broadly applicable prospects. It is postulated that skin microbiota alternation may interplay with innate immunity such as antimicrobial peptides and Toll-like receptors to stimulate T-cell populations, resulting in immune cascade responses and ultimately psoriasis. Achieving a thorough understanding of its underlying pathogenesis is crucial. Herein, we discuss the potential immunopathogenesis of psoriasis from the aspect of skin microbiota in an attempt to yield insights for novel therapeutic and preventive modalities for psoriasis.

scholarly journals Hubungan antara Mikrobiota dan Psoriasis

2021 ◽  
Vol 1 (1) ◽  
pp. 7-11
Author(s):  
Alinta Ayuningtyas Alinta ◽  
◽  
Khairun Nisa Berawi ◽  
Nurul Islamy ◽  
◽  
...  
Keyword(s):  
Systematic Review ◽  
Skin Diseases ◽  
Plaque Formation ◽  
The Body ◽  
Therapeutic Interventions ◽  
Skin Microbiota ◽  
Inflammatory Skin Diseases ◽  
Environmental Interactions ◽  
Immune Mediated ◽  
Selective Modulation

Abstract As the largest organ of the human body, the skin is colonized by a variety of microorganisms, most of which are harmless and have benefits for the host. This microbiota contributes to the metabolism and immunity of the host. The human microbiota includes bacteria, fungi, viruses and archaea, which inhabit various areas of the body. Most of the microbiota resides in the intestine, only a small part of which inhabit epithelial surfaces such as the mouth, airways, vagina and skin. The total number of microbiota on the surface of the skin is usually in the range 104 to 106 cells per cm2. Psoriasis is one of the most common immune-mediated inflammatory skin diseases. The prevalence of disease has been reported, with a range of 0.09- 11.43% by the WHO Global Report 2016. To date the causes of this disease are not fully understood, genetic and environmental interactions play an important role in disease progression. Recently, immunological approaches have helped to clarify the pathophysiology of the disease significantly. The skin microbiota has been shown to play a role in the pathogenesis of lichenified plaque formation in psoriasis. Corynebacterium, Propionibacterium, Staphylococcus, and also Streptococcus have been identified as the main microbiota. It has not been determined whether these changes in the microbiota are a cause or consequence of psoriasis. For this reason, further research on selective modulation of the skin microbiota is needed. This systematic review aims to elucidate the correlation between the microbiome and pathogenesis of psoriasis and the modulation of the microbiota that could lead to possible therapeutic interventions. Keywords: Microbiota, Psoriasis, Skin

scholarly journals The Interplay between Host Innate Immunity and Hepatitis E Virus

Viruses ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 541 ◽  
Author(s):  
Yang Li ◽  
Changbo Qu ◽  
Peifa Yu ◽  
Xumin Ou ◽  
Qiuwei Pan ◽  
...  
Keyword(s):  
Innate Immunity ◽  
Immune System ◽  
Hepatitis E Virus ◽  
Inflammatory Responses ◽  
Hepatitis E ◽  
Experimental Models ◽  
Innate Immune ◽  
Host Immune System ◽  
Global Health Issue ◽  
Host Innate Immunity

Hepatitis E virus (HEV) infection represents an emerging global health issue, whereas the clinical outcomes vary dramatically among different populations. The host innate immune system provides a first-line defense against the infection, but dysregulation may partially contribute to severe pathogenesis. A growing body of evidence has indicated the active response of the host innate immunity to HEV infection both in experimental models and in patients. In turn, HEV has developed sophisticated strategies to counteract the host immune system. In this review, we aim to comprehensively decipher the processes of pathogen recognition, interferon, and inflammatory responses, and the involvement of innate immune cells in HEV infection. We further discuss their implications in understanding the pathogenic mechanisms and developing antiviral therapies.

Anti-tumor necrosis factor-α therapies for immune-mediated and inflammatory skin diseases

2011 ◽  
Vol 72 (7) ◽  
pp. 615-622
Author(s):  
Clio Dessinioti ◽  
Alexander J. Stratigos ◽  
Andreas Katsambas ◽  
Christina Antoniou
Keyword(s):  
Tumor Necrosis Factor ◽  
Tumor Necrosis ◽  
Tumor Necrosis Factor Α ◽  
Skin Diseases ◽  
Inflammatory Skin Diseases ◽  
Immune Mediated ◽  
Inflammatory Skin ◽  
Factor Α ◽  
Necrosis Factor

scholarly journals Relationship between Skin Microbiota and Skin Biophysical Parameters in Inflammatory Skin Disease: A Systematic Review

2021 ◽  
Vol 7 (1) ◽  
pp. 1-6
Author(s):  
Paola Perugini ◽  
Keyword(s):  
Systematic Review ◽  
Atopic Dermatitis ◽  
Skin Diseases ◽  
Bacterial Flora ◽  
Skin Microbiota ◽  
Biophysical Parameters ◽  
Microbial Composition ◽  
Inflammatory Skin Diseases ◽  
Starting Point ◽  
Inflammatory Skin

Many recent studies highlight the importance of skin microbiota for skin health. Alterations in the balance of bacterial flora cause the development of inflammatory skin diseases such as acne, atopic dermatitis, or psoriasis. This systematic review aims to investigate the relationship, in these skin diseases, between skin microbiota and skin biophysical parameters, such as pH, Transepidermal Water Loss (TEWL), Hydration (HI) and sebum levels. Google Scholar, Medline via Pubmed, and Web of Science were considered as scientific database to search studies about this topic. Research about acne and psoriasis did not produce any results. For this reason, in this review, only articles concerning atopic dermatitis were discussed. Therefore, a possible correlation between skin barrier functionality and microbial composition was also investigated. So, this could be a starting point for the diagnosis of atopic dermatitis or, more generally, for all inflammatory skin diseases.

scholarly journals Features of the Skin Microbiota in Common Inflammatory Skin Diseases

Life ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 962
Author(s):  
Iva Ferček ◽  
Liborija Lugović-Mihić ◽  
Arjana Tambić-Andrašević ◽  
Diana Ćesić ◽  
Ana Gverić Grginić ◽  
...  
Keyword(s):  
Skin Diseases ◽  
Seborrheic Dermatitis ◽  
Bacterial Species ◽  
Clinical Manifestations ◽  
Skin Microbiome ◽  
Bacterial Strains ◽  
Skin Microbiota ◽  
Inflammatory Skin Diseases ◽  
Bacterial Microbiome ◽  
Inflammatory Skin

Many relatively common chronic inflammatory skin diseases manifest on the face (seborrheic dermatitis, rosacea, acne, perioral/periorificial dermatitis, periocular dermatitis, etc.), thereby significantly impairing patient appearance and quality of life. Given the yet unexplained pathogenesis and numerous factors involved, these diseases often present therapeutic challenges. The term “microbiome” comprises the totality of microorganisms (microbiota), their genomes, and environmental factors in a particular environment. Changes in human skin microbiota composition and/or functionality are believed to trigger immune dysregulation, and consequently an inflammatory response, thereby playing a potentially significant role in the clinical manifestations and treatment of these diseases. Although cultivation methods have traditionally been used in studies of bacterial microbiome species, a large number of bacterial strains cannot be grown in the laboratory. Since standard culture-dependent methods detect fewer than 1% of all bacterial species, a metagenomic approach could be used to detect bacteria that cannot be cultivated. The skin microbiome exhibits spatial distribution associated with the microenvironment (sebaceous, moist, and dry areas). However, although disturbance of the skin microbiome can lead to a number of pathological conditions and diseases, it is still not clear whether skin diseases result from change in the microbiome or cause such a change. Thus far, the skin microbiome has been studied in atopic dermatitis, seborrheic dermatitis, psoriasis, acne, and rosacea. Studies on the possible association between changes in the microbiome and their association with skin diseases have improved the understanding of disease development, diagnostics, and therapeutics. The identification of the bacterial markers associated with particular inflammatory skin diseases would significantly accelerate the diagnostics and reduce treatment costs. Microbiota research and determination could facilitate the identification of potential causes of skin diseases that cannot be detected by simpler methods, thereby contributing to the design and development of more effective therapies.

Hair eruption initiates and commensal skin microbiota aggravate adverse events of anti-EGFR therapy

2019 ◽  
Vol 11 (522) ◽  
pp. eaax2693 ◽  
Author(s):  
Jörg Klufa ◽  
Thomas Bauer ◽  
Buck Hanson ◽  
Craig Herbold ◽  
Philipp Starkl ◽  
...  
Keyword(s):  
Adverse Events ◽  
Skin Diseases ◽  
De Novo ◽  
Growth Factor Receptor ◽  
Erk Signaling ◽  
Skin Microbiota ◽  
Inflammatory Skin Diseases ◽  
Commensal Microbiota ◽  
Barrier Defect ◽  
Inflammatory Skin

Epidermal growth factor receptor (EGFR)–targeted anticancer therapy induces stigmatizing skin toxicities affecting patients’ quality of life and therapy adherence. The lack of mechanistic details underlying these adverse events hampers their management. We found that EGFR/ERK signaling is required in LRIG1-positive stem cells during de novo hair eruption to secure barrier integrity and prevent the invasion of commensal microbiota and inflammatory skin disease. EGFR-deficient epidermis is permissive for microbiota outgrowth and displays an atopic-like TH2-dominated signature. The opening of the follicular ostia during hair eruption allows invasion of commensal microbiota into the hair follicle, initiating an additional TH1 and TH17 response culminating in chronic folliculitis. Restoration of epidermal ERK signaling via prophylactic FGF7 treatment or transgenic SOS expression rescues the barrier defect in the absence of EGFR, highlighting a therapeutic anchor point. These data reveal that commensal skin microbiota provoke atopic-like inflammatory skin diseases by invading into the follicular opening of erupting hair.

scholarly journals TRINITY OF SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS-2: ORIGIN, GENOTYPE, PHENOTYPE, AND IMMUNE RESPONSE IN CORONAVIRUS DISEASE-2019

2021 ◽  
pp. 28-36
Author(s):  
MURUGAN NANDAGOPAL ◽  
ARULMOZHI BALAKRISHNAN ◽  
CHIRAYU PADHIAR
Keyword(s):  
Innate Immunity ◽  
Immune System ◽  
Severe Acute Respiratory Syndrome ◽  
Innate Immune System ◽  
Clinical Symptoms ◽  
Innate Immune ◽  
Host Immune System ◽  
Wide Range ◽  
Novel Coronavirus ◽  
Classification Structure

The coronavirus disease-2019 (COVID-19) outbreak by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) or a novel coronavirus (2019-CoV) has prompted global health concerns. A pandemic resulted from the disease’s transmission through many routes. In this pandemic, the interaction between coronavirus and the host immune system, particularly the innate immune system, is becoming more prominent. Against viruses and pathogens, innate immunity serves as a first line of defense. Our understanding of pathogenesis will benefit from a better grasp of the mechanisms of immune evasion techniques. The origin, classification, structure, and method of transmission of SARS-CoV-2 were summarized in this paper. We have discussed the importance of important communications. In this review, we have discussed the function of important components of the innate immune system in COVID-19 infection, as well as how the virus evades innate immunity through multiple tactics and contributes to a wide range of clinical symptoms and outcomes.

scholarly journals Saliva Proteomics as Fluid Signature of Inflammatory and Immune-Mediated Skin Diseases

2021 ◽  
Vol 22 (13) ◽  
pp. 7018
Author(s):  
Anna Campanati ◽  
Emanuela Martina ◽  
Federico Diotallevi ◽  
Giulia Radi ◽  
Andrea Marani ◽  
...  
Keyword(s):  
Skin Diseases ◽  
Human Saliva ◽  
Inflammatory Skin Diseases ◽  
Non Invasive ◽  
Diagnosis And Prognosis ◽  
Genomic Technologies ◽  
Immune Mediated ◽  
Saliva Analysis ◽  
Whole Saliva

Saliva is easy to access, non-invasive and a useful source of information useful for the diagnosis of serval inflammatory and immune-mediated diseases. Following the advent of genomic technologies and -omic research, studies based on saliva testing have rapidly increased and human salivary proteome has been partially characterized. As a proteomic protocol to analyze the whole saliva proteome is not currently available, the most common aim of the proteomic analysis is to discriminate between physiological and pathological conditions. The salivary proteome has been initially investigated in several diseases: oral squamous cell carcinoma and oral leukoplakia, chronic graft-versus-host disease, and Sjögren’s syndrome. Otherwise, salivary proteomics studies in the dermatological field are still in the initial phase, thus the aim of this review is to collect the best research evidence on the role of saliva proteomics analysis in immune-mediated skin diseases to understand the direction of research in this field. The results of PRISMA analysis reported herein suggest that human saliva analysis could provide significant data for the diagnosis and prognosis of several immune-mediated and inflammatory skin diseases in the next future.

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