Subject: Inflammatory, Systemic & Follicle

T Helper 1/T Helper 17 Phenotypes

https://jamanetwork.com/journals/jamadermatology/fullarticle/2676938

Ultrasound Detection of Early Signs Linked to the Severity& Tunnels in HS

Synopsis: Ultrasound can detect early HS signs that are significantly linked to severity and 2 types of fragmentation of the keratin, which could support the generation and perpetuation of the fluid collections and tunnels. These ultrasound signs can help prompt diagnosis and management, the development and testing of medications, and the measure of treatment outcomes […]

Role of Interluken-17

Hidradenitis suppurativa is a chronic inflammatory skin condition affecting primarily the axillary, perianal, and inguinal areas. Patients with hidradenitis suppurativa present with occlusion and subsequent rupture of follicular ducts, profound abscesses, fistulae, odorous discharge, fibrosis, and scar formation, causing significant morbidity. Knowledge of the pathogenesis of hidradenitis suppurativa is limited and treatment with antimicrobial drugs, […]

Matrix Remodeling & MMP Expression/Activation

Synopsis: Hidradenitis suppurativa/acne inversa (HS) is a chronic, inflammatory, recurrent, debilitating skin disease of the hair follicle, associated with considerable tissue remodelling. Although abnormal cytokine expression was detected both in perilesional and in uninvolved skin, up to now there is no model allowing a better understanding of the implicit inflammatory mechanisms in HS. The aim […]

Defining HS Phenotypes

Synopsis: Background: It has been proposed that two main phenotypes of hidradenitis suppurativa (HS) exist. This proposal is based upon different elementary structures detected in the skin, namely follicular subtypes and inflammatory subtypes. Having an accurate definition of these two variants could help us to better identify patients who may require an early intervention with […]

Dysregulation of the TH17: Treg Cell Axis

Synopsis: Hidradenitis suppurativa (HS) is a chronic, inflammatory, and debilitating disease of hair follicles with 1–4% prevalence and high morbidity. There is a dearth of information on the pathogenesis and immune dysregulation underlying HS; therefore, we carried out a detailed analysis of skin-infiltrating T cells. Cells isolated from skin biopsy samples and blood from HS […]

Keratinocytes and Neutrophils

Synopsis: Background The pathogenesis of the chronic inflammatory skin disease hidradenitis suppurativa (HS, also known as acne inversa) involves epidermal alterations such as psoriasiform epidermal hyperplasia and keratin plugging. Keratinocytes are an important source of proinflammatory molecules in inflammatory skin diseases and can be stimulated by interleukin (IL)-17+ cells. Objectives To explore the possible role […]

Pathophysiology of HS

Abstract The pathophysiology of hidradenitis suppurativa (HS) is not well understood. Some of our knowledge comes from clinical and epidemiological observations, along with studies of the histopathology and immunohistochemistry of affected skin. More recently, cutaneous molecular studies and transcriptomic analyses have provided additional information regarding inflammatory processes. The chronic cutaneous inflammation, systemic symptoms, and associated […]

Greater Systemic Inflammatory Load

Synopsis: ​ Hidradenitis is a chronic inflammatory skin disease with recurrent nodules, tunnels, scarring and suppuration of intertriginous areas. Hospital-treated HS patients have an increased risk of metabolic syndrome and a wide array of co-morbidities that possibly are related to systemic inflammation. Neutrophile to lymphocyte ratio has been suggested as a marker of systemic inflammation. […]

Connecting the Tracts

Synopsis: HS is now believed to be a systemic inflammatory condition, contrary to previous hypotheses classifying HS as a purely cutaneous disorder. Many previously accepted models of HS pathogenesis are being challenged. It is now believed that HS is a systemic inflammatory disease of multifactorial basis due to auto-inflammation 53. It was formerly hypothesized that […]

Auto-inflammatory & Hair Follicle Involvement

Second International HS Research Symposium Abstracts The term “hidradenitis suppurativa” is firmly entrenched in the dermatological literature although it refers to a false pathogenetic concept. The term was historically coined based merely on the characteristic distribution of the apocrine glands and the anatomical coincidence with the disease process. The herein reported histopathological analysis of specimens […]

HS is an auto-inflammatory disease

Hidradenitis suppurativa is an auto‐inflammatory disease: results of an ex vivo study Synopsis: Immune dysregulation, carrying a strong IL‐1 signature, is implicated in the pathogenesis of hidradenitis suppurativa (HS). Interleukin 1 production is based on activation of auto‐inflammatory pathways including the inflammasome, and consequential induction of various cytokines and chemokines. The objective of this study […]

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