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Topic Review
Diagnosis and Management of Onychophagia
Onychophagia is defined as chronic biting of the nail plate, nail folds, nail bed, and/or cuticle.
  • 1.4K
  • 25 Mar 2022
Topic Review
The Connection between the Gut Microbiome and Psoriasis
Evidence has shown that gut microbiome plays a role in modulating the development of diseases beyond the gastrointestinal tract, including skin disorders such as psoriasis. The gut–skin axis refers to the bidirectional relationship between the gut microbiome and skin health. This is regulated through several mechanisms such as inflammatory mediators and the immune system. Dysregulation of microbiota has been seen in numerous inflammatory skin conditions such as atopic dermatitis, rosacea, and psoriasis. Understanding how gut microbiome are involved in regulating skin health may lead to development of novel therapies for these skin disorders through microbiome modulation, in particularly psoriasis. 
  • 1.4K
  • 27 Jun 2022
Topic Review
Management of Chronic Spontaneous Urticaria Using Anti-IgE Antibodies
Chronic spontaneous urticaria (CSU) considerably alters patients’ quality of life, often for extended periods, due to pruriginous skin lesions, impaired sleep, unexpected development of angioedema, and failure of conventional treatments in properly controlling signs and symptoms. Although the production of specific immunoglobulin E (IgE) antibodies against certain allergens is not a characteristic of the disease, treatment with omalizumab, a monoclonal anti-IgE antibody, proved efficient and safe in patients with moderate to severe chronic spontaneous urticaria uncontrolled by H1-antihistamines. Ligelizumab, a high-affinity monoclonal anti-IgE antibody, may also efficiently relieve symptoms of unresponsive chronic urticaria to standard therapies. 
  • 1.4K
  • 27 Jul 2022
Topic Review
The Role of Hormones in Hidradenitis Suppurativa
Hidradenitis suppurativa (HS) is a chronic inflammatory disease manifesting in inverse body regions. In HS, there appears to be a dysregulated adipokine release that is shifted towards pro-inflammatory adipokines. Insulin resistance is significantly more common in HS than in healthy patients regardless of BMI, age, and gender. Insulin resistance in HS patients leads to further cardiovascular disease. The mechanism of insulin resistance and role of adipokines should be investigated in future studies to better provide the pathomechanisms of HS. The role of androgens seems to be important in a certain subgroup of female patients. Anti-androgenic therapy can be useful and helpful in some patients.
  • 1.3K
  • 19 Dec 2022
Topic Review
Microalgae Bioactive Compounds to Topical Applications Products
Microalgae are complex photosynthetic organisms found in marine and freshwater environments that produce valuable metabolites. Microalgae-derived metabolites have gained remarkable attention in different industrial biotechnological processes and pharmaceutical and cosmetic industries due to their multiple properties, including antioxidant, anti-aging, anti-cancer, phycoimmunomodulatory, anti-inflammatory, and antimicrobial activities. These properties are recognized as promising components for state-of-the-art cosmetics and cosmeceutical formulations.
  • 1.3K
  • 13 Jun 2022
Topic Review
Skin Models for Perspiration Simulation
Skin models offer an in vitro alternative to human trials without their high costs, variability, and ethical issues. Perspiration models, in particular, have gained relevance lately due to the rise of sweat analysis and wearable technology.
  • 1.3K
  • 26 Apr 2021
Topic Review
Collagen Hydrolysates for Skin Protection
Antioxidants are molecules that delay or inhibit the oxidation of other molecules. Its use significantly increased in recent years in the diet of people. Natural antioxidants are replacing the use of synthetic antioxidant ingredients due to their safety, nutritional, and therapeutic values. Hydrolyzed collagen (HC) is a popular ingredient considered to be an antioxidant. This low molecular weight protein has been widely utilized due to its excellent biocompatibility, easy biodegradability, and weak antigenicity. It is a safe cosmetic biomaterial with good moisturizing properties on the skin. The antioxidant properties of HC are conditioned to the size of the molecule: the lower the molecular weight of peptides, the greater the ability to donate an electron or hydrogen to stabilize radicals. The antioxidant capacity of HC is mostly due to the presence of hydrophobic amino acids in the peptide. The exact mechanism of peptides acting as antioxidants is not clearly known but some aromatic amino acids and histidine are reported to play an important role in the antioxidant activity. Oral ingestion of HC increases the levels of collagen-derived peptides in the blood torrent and improves the skin properties such as elasticity, skin moisture, and transepidermal water loss. 
  • 1.3K
  • 10 Dec 2021
Topic Review
Scleroderma (morphea) en Coup de Sabre
Scleroderma (morphea) en coup de sabre is a localized subtype restricted to the frontoparietal region of the head. Localized scleroderma/morphea en coup de sabre (LScs) is a rare form of localized scleroderma that typically affects predominantly children and women. It manifests by presence of linear atrophy and/or hardening of the skin, subcutis, occasionally involving muscles and bones. The early phase lesions appear as an erythematous or violaceous linear indurated mild atrophic plaque and subsequently lesions progress to hypopigmented or depigmented sclerotic deep furrow. It usually starts at the level of the upper eyebrow ridge and reaches the scalp, where a cicatricial alopecia focus appears. There are known descriptions of patients with localized scleroderma en coup de sabre, in whom lesions spread below the eyebrows involving the eyelids, eyelashes, or the skin on the nose. The disease may manifest with ophthalmologic (deformation of eyelids, uveitis, episcleritis) and neurological (convulsions, migraine, trigeminal neuralgia, vascular malformations) symptoms. In some cases neurological symptoms preceded the appearance of skin lesions. Parry Romberg syndrome (also known as progressive facial hemiatrophy), which is a distinct entity within craniofacial linear subtype involving subcutaneous tissue and bones, coexists in 20–40% of patients with en coup de sabre lesions.
  • 1.3K
  • 21 Oct 2021
Topic Review
Acetyl Zingerone
The cumulative damage skin sustains from exposure to environmental stressors throughout life exerts significant effects on skin aging and cancer development. One of the main ways by which environmental stressors mediate their effects within skin is through induction of reactive oxygen species (ROS).
  • 1.3K
  • 12 Jun 2023
Topic Review
Inflammation of the Lips (Cheilitis) and Perioral Skin
Lip inflammation may manifest as mainly reversible cheilitis, mainly irreversible, or cheilitis connected to dermatoses or systemic diseases. Therefore, knowing a patient’s medical history is important, especially whether their lip lesions are temporary, recurrent, or persistent. Sometimes temporary contributing factors, such as climate and weather conditions, can be identified and avoided—exposure to extreme weather conditions (e.g., dry, hot, or windy climates) may cause or trigger lip inflammation. Emotional and psychological stress are also mentioned in the etiology of some lip inflammations (e.g., exfoliative cheilitis) and may be associated with nervous habits such as lip licking. 
  • 1.3K
  • 12 Jan 2023
Topic Review
Mechanotransduction in Skin and Wounds
Skin injury is a common occurrence and mechanical forces are known to significantly impact the biological processes of skin regeneration and wound healing. Immediately following the disruption of the skin, the process of wound healing begins, bringing together numerous cell types to collaborate in several sequential phases. These cells produce a multitude of molecules and initiate multiple signaling pathways that are associated with skin disorders and abnormal wound healing, including hypertrophic scars, keloids, and chronic wounds. Studies have shown that mechanical forces can alter the microenvironment of a healing wound, causing changes in cellular function, motility, and signaling. A better understanding of the mechanobiology of cells in the skin is essential in the development of efficacious therapeutics to reduce skin disorders, normalize abnormal wound healing, and minimize scar formation.
  • 1.3K
  • 30 Oct 2020
Topic Review
Trichophyton indotineae
Trichophyton (T.) indotineae is a newly identified dermatophyte species that has been found in a near-epidemic form on the Indian subcontinent. There is evidence of its spread from the Indian subcontinent to a number of countries worldwide. The fungus is identical to genotype VIII within the T. mentagrophytes/T. interdigitale species complex, which was described in 2019 by sequencing the Internal Transcribed Spacer (ITS) region of ribosomal DNA of the dermatophyte.
  • 1.3K
  • 27 Jul 2022
Topic Review
AHR and NRF2 in Atopic Dermatitis
Skin is constantly exposed to environmental insults, including toxic chemicals and oxidative stress. These insults often provoke perturbation of epidermal homeostasis and lead to characteristic skin diseases. AHR (aryl hydrocarbon receptor) and NRF2 (nuclear factor erythroid 2-related factor 2) are transcription factors that induce a battery of cytoprotective genes encoding detoxication and antioxidant enzymes in response to environmental insults. In addition to their basic functions as key regulators of xenobiotic and oxidant detoxification, it has been revealed that AHR and NRF2 also play critical roles in the maintenance of skin homeostasis. In fact, specific disruption of AHR function in the skin has been found to be associated with the pathogenesis of various skin diseases, most prevalently atopic dermatitis (AD).
  • 1.3K
  • 19 Apr 2022
Topic Review
Desmosomal Genes
Desmosomes are mirroring, transmembrane protein chains that connect the intermediate filament networks of neighbouring cells. Each chain continuously (dis)assembles due to the turnover of five desmosomal protein types: desmoplakin, plakoglobin, plakophilins, desmocollins and desmogleins. The expression of two genes is critical to the formation of all desmosomes: namely DSP, encoding two differently spliced desmoplakin proteins (DPI and DPII) and JUP, encoding plakoglobin (PG). Meanwhile, plakophilins, desmocollins and desmogleins are expressed in a tissue-specific manner and are therefore encoded by multiple genes.
  • 1.3K
  • 20 Oct 2022
Topic Review
Expression, Regulation, and Physiological Relevance of Skin Aquaporins
The skin is the largest organ of the human body, serving as an effective mechanical barrier between the internal milieu and the external environment. The skin is widely considered the first-line defence of the body, with an essential function in rejecting pathogens and preventing mechanical, chemical, and physical damages. Keratinocytes are the predominant cells of the outer skin layer, the epidermis, which acts as a mechanical and water-permeability barrier. The epidermis is a permanently renewed tissue where undifferentiated keratinocytes located at the basal layer proliferate and migrate to the overlying layers. 
  • 1.2K
  • 27 May 2022
Topic Review
Functional Aspects of Epidermal Barrier
The epidermis is a living, multilayered barrier with five functional levels, including a physical, a chemical, a microbial, a neuronal, and an immune level. 
  • 1.2K
  • 03 Nov 2021
Topic Review
Artificial Intelligence in Dermatology Image Analysis
Thanks to the rapid development of computer-based systems and deep-learning-based algorithms, artificial intelligence (AI) has long been integrated into the healthcare field. AI is also particularly helpful in image recognition, surgical assistance and basic research. Due to the unique nature of dermatology, AI-aided dermatological diagnosis based on image recognition has become a modern focus and future trend.
  • 1.2K
  • 06 Feb 2023
Topic Review
Colchicine in Managing Skin Conditions
Colchicine is a natural alkaloid with anti-inflammatory properties used to treat various disorders, including some skin diseases. Colchicine could be, as a single therapy or in combination with other drugs, a possible treatment to manage several skin diseases.
  • 1.2K
  • 13 Apr 2022
Topic Review
Psoriasis
Psoriasis is a common immune-mediated inflammatory skin disease characterized by well-demarcated scaly raised plaques.
  • 1.2K
  • 22 Apr 2021
Topic Review
Soluble Factors and Receptors in Skin Innate Immunity
The pattern recognition receptors, complement system, inflammasomes, antimicrobial peptides, and cytokines are innate immunity soluble factors. They sense, either directly or indirectly, the potential threats and produce inflammation and cellular death. High interest in their modulation has emerged lately, acknowledging they are involved in many cutaneous inflammatory, infectious, and neoplastic disorders. We extensively reviewed the implication of soluble factors in skin innate immunity. Furthermore, we showed which molecules target these factors, how these molecules work and how they've been used in dermatological practice. Cytokine inhibitors have paved the way to a new era in treating moderate to severe psoriasis and atopic dermatitis. 
  • 1.2K
  • 13 Dec 2021
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