Dermatology Research

19:23 EST 21st February 2019 | BioPortfolio

Fine mapping and subphenotyping implicates ADRA1B gene variants in psoriasis susceptibility in a Chinese population.

A genomic region on 5q33.3 lies between and encompasses the IL12B and PTTG1 genes, and contains many potential psoriasis causal variants. We aimed to further examine the influence of variants in and around this region.

A review of dupilumab in the treatment of atopic diseases.

Dupilumab is a fully human monoclonal IgG4 antibody directed against the alpha subunit of the IL-4 receptor and prevents the signaling of IL-4 and IL-13, two type 2 cytokines known to be important drivers of atopic diseases. In March of 2017, the United States Food and Drug Administration (FDA) approved dupilumab for the treatment of moderate-to-severe atopic dermatitis in adults that is uncontrol...

Metronidazole concentration in the bloodstream following its topical application, at different concentration levels, on experimental skin wounds during healing by secondary intention1.

To characterize qualitatively and quantitatively the absorption of metronidazole solution, in greater concentrations and for longer periods, when applied topically to an experimental open skin wound model.

De novo histoid leprosy in a Colombian patient with multiple skin nodules on the ears and extremities.

Histoid leprosy is an uncommon form of lepromatous leprosy with distinct clinical, histopathological, immunological, and bacteriological features. This variant usually occurs in multibacillary patients who have irregular or inadequate treatment. Herein, we report a case of de novo histoid leprosy diagnosed in a patient from Cali, Colombia. In endemic areas, histoid leprosy should be in the differe...

Reading of the Mitsuda test: comparison between diameter and total area by means of a computerized method.

The Mitsuda test is a skin test based on the individual's immune response through late and highly specific hypersensitivity reaction to the Mycobacterium leprae bacillus. A negative reaction identifies individuals who present a higher risk of becoming ill if exposed to M. leprae and, if they become ill, to develop the virchowian form of disease. The Mitsuda test reading is performed by means of a ...

Yellow Periorbital Plaque and Retroperitoneal Fibrosis.

Association of Atherosclerosis Prevalence With Age, Race, and Traditional Risk Factors in Patients With Psoriasis.

A Nonjunctional, Nonsyndromic Case of Junctional Epidermolysis Bullosa With Renal and Respiratory Involvement.

The skin as « third kidney ».

The skin is the largest human organ playing an important role in protection, thermoregulation and sensation. Recent studies suggest that a new function has to be added: the storage of sodium. There is increasing evidence that sodium can accumulate in the skin, which suggests that the skin contributes to the regulation of sodium balance in humans, and possibly to the control of extracellular volume...

Dermatologic Urgencies and Emergencies: What Every Pathologist Should Know.

Fatal dermatologic diseases and ones with high morbidity can occur in the inpatient setting. In such cases, prompt and accurate assessment of a bedside skin biopsy is required. This may be challenging for many pathologists who are not familiar with the complexity of skin pathology and skin terminology within the fields of dermatopathology and dermatology.

Anticipating the Era of Dermatology Disease Trackers.

The current era of patient-centered medicine is characterized by widespread accessibility to medical information and self-driven involvement in disease management. This movement is evident in the rapid expansion of medical mobile applications (apps) for personal electronic devices. Between 2014 and 2017, dermatology-specific mobile apps increased by 81% from 291 to 526, with a growing selection of...

Examining the contribution of surrounding intact skin during cutaneous healing.

Severe cutaneous wounds expose the body to the external environment, which may lead to impairments in bodily functions and increased risk of infection. There is a need to develop skin substitutes which could effectively promote complete skin regeneration following an injury. Murine models are used to test such skin substitutes, but their healing involves contraction of the dermis not found in huma...

Not only a Hollywood trend: The dermatologic features of villains in classic and contemporary literature.

A disproportional number of movie villains have skin dosorders . However, it is not only in Hollywood that this is over-represented, it is seen in other forms of art and human expression, including classic and contemporary literature. This article is protected by copyright. All rights reserved.

Interleukin-17 receptor A blockade with brodalumab in palmoplantar pustular psoriasis: Report on four cases.

Palmoplantar pustular psoriasis, also termed palmoplantar pustulosis (PPP), is a rare disease affecting the palmoplantar regions characterized by sterile, yellow to brown pustules mostly on erythematous skin. PPP is related to a high burden due to painful, impaired and stigmatizing character. Several isoforms of interleukin (IL) have been implicated in its pathophysiology. Here, we report on four ...

Crowdsourcing to delineate skin affected by chronic graft-vs-host disease.

Estimating the extent of affected skin is an important unmet clinical need both for research and practical management in many diseases. In particular, cutaneous burden of chronic graft-vs-host disease (cGVHD) is a primary outcome in many trials. Despite advances in artificial intelligence and 3D photography, progress toward reliable automated techniques is hindered by limited expert time to deline...

Adhesive Hemostatic Conducting Injectable Composite Hydrogels with Sustained Drug Release and Photothermal Antibacterial Activity to Promote Full-Thickness Skin Regeneration During Wound Healing.

Developing injectable nanocomposite conductive hydrogel dressings with multifunctions including adhesiveness, antibacterial, and radical scavenging ability and good mechanical property to enhance full-thickness skin wound regeneration is highly desirable in clinical application. Herein, a series of adhesive hemostatic antioxidant conductive photothermal antibacterial hydrogels based on hyaluronic ...

High Sensitivity Flexible Electronic Skin Based on Graphene Film.

Electronic skin with high sensitivity, rapid response, and long-term stability has great value in robotics, biomedicine, and in other fields. However, electronic skin still has challenges in terms of sensitivity and response time. In order to solve this problem, flexible electronic skin with high sensitivity and the fast response was proposed, based on piezoresistive graphene films. The electronic...

Contact Modelling and Tactile Data Processing for Robot Skins.

Tactile sensing is a key enabling technology to develop complex behaviours for robots interacting with humans or the environment. This paper discusses computational aspects playing a significant role when extracting information about contact events. Considering a large-scale, capacitance-based robot skin technology we developed in the past few years, we analyse the classical Boussinesq⁻Cerruti's...

Identification and Evaluation of Inhibitors of Lipase from using Virtual High-Throughput Screening and Molecular Dynamics Studies.

Recent studies revealed the role of lipase in the pathogenicity of in dandruff and seborrheic dermatitis (D/SD). The lipase from (Mrlip1) is considered a potential target for dandruff therapy. In this work, we performed structure-based virtual screening in Zinc database to find the natural bioactive inhibitors of Mrlip1. We identified three compounds bearing superior affinity and specificity fro...

Recently Discovered Interstitial Cell Population of Telocytes: Distinguishing Facts from Fiction Regarding Their Role in the Pathogenesis of Diverse Diseases Called "Telocytopathies".

In recent years, the interstitial cells telocytes, formerly known as interstitial Cajal-like cells, have been described in almost all organs of the human body. Although telocytes were previously thought to be localized predominantly in the organs of the digestive system, as of 2018 they have also been described in the lymphoid tissue, skin, respiratory system, urinary system, meninges and the orga...

Epithelial barrier repair and prevention of allergy.

Allergic diseases have in common a dysfunctional epithelial barrier, which allows the penetration of allergens and microbes, leading to the release of type 2 cytokines that drive allergic inflammation. The accessibility of skin, compared with lung or gastrointestinal tissue, has facilitated detailed investigations into mechanisms underlying epithelial barrier dysfunction in atopic dermatitis (AD)....

Do human dermal adipocytes switch from lipogenesis in anagen to lipophagy and lipolysis during catagen in the human hair cycle?

In murine skin dermal white adipose tissue (DWAT) undergoes fluctuations in size across the hair cycle, whereas changes in size, function and metabolism of dermal adipocytes (DAs) during the human scalp hair cycle remain unexplored. Transmission electron microscopy results suggest that, during anagen-catagen transition, human DAs co-opt the autophagy machinery to undergo lipophagy within their lip...

Naringenin as an opener of mitochondrial potassium channels in dermal fibroblasts.

Flavonoids belong to a large group of polyphenolic compounds that are widely present in plants. Certain flavonoids, including naringenin, have cytoprotective properties. Although the antioxidant effect has long been thought to be a crucial factor accounting for the cellular effects of flavonoids, mitochondrial channels have emerged recently as targets for cytoprotective strategies. In the present ...

GLP-1 receptor agonist impairs keratinocytes inflammatory signals by activating AMPK.

Liraglutide, a glucagon-like peptide-1 (GLP-1) analogue, is an antidiabetic drug. It has been shown to improve the Psoriasis Area and Severity Index (PASI) in patients with type 2 diabetes and psoriasis in clinical practice, but the mechanism remains somewhat unclear. We used lipopolysaccharides (LPS) to induce inflammatory response in keratinocytes and explore the mechanism.

Optimizing the Total Body Skin Exam: An Observational Cohort Study.

Total body skin examinations (TBSE) are commonly performed in clinical practice. There is limited research on best practices for performing a TBSE.

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