Adipose tissue in the treatment of androgenic alopecia.

Tuková tkán je komplexní orgán s ruznými funkcemi. Pusobí jako zásobárna energie, tepelný izolant a tlumic nárazu a zastává také roli v endokrinním systému. V posledních letech byl objeven její regeneracní a protizánetlivý potenciál. Za tyto funkce jsou zodpovedné ruzné typy progenitorových, kmenových a zralých bunek jiných nez adipocyty, které se nacházejí v tukové tkáni a souhrnne se oznacují jako stromální vaskulární frakce. V retikulární dermis tukové bunky obklopují vlasové folikuly a úzce regulují vlasový cyklus. Intradermální progenitorové adipocyty jsou metabolicky aktivní a vylucují radu signálních molekul, které jsou zodpovedné za indukci anagenní fáze a rust nových vlasu. V tomto prehledu se zabýváme úcinností kmenových bunek odvozených z tukové tkáne pri lécbe alopecie v klinických studiích.

Janus Kinase Inhibitors in the Treatment of Alopecia Areata.

Alopecia areata is a disease of autoimmune origin which causes non scarring hair loss. The extent of alopecia varies from a small patch to complete scalp and body hair loss, which can have huge psychosocial impact for those affected. Treatment modalities which have been used so far included nonspecific immunosuppressive medications, such as corticosteroids, cyclosporine, and methotrexate, or topical immunomodulators, such as diphencyprone, dithranol, and squaric acid dibutylester. The recognition of the importance of Janus kinase pathway in alopecia areata pathogenesis enabled more specific approaches in treatment. Positive outcomes of Janus kinase inhibitors in several trials granted approval for baricitinib which became the first on-label treatment for alopecia areata. The aim of this review is to summarize the role, efficacy and safety of several Janus kinase inhibitors in alopecia areata.

The Skin as a Mirror of Internal Disease: Comorbidities and Epidemiology of Acne Vulgaris and Adult Female Acne - A Cross-sectional Study and Current State of Knowledge.

Acne vulgaris is a common skin condition affecting an increasing number of adults and might be a clue to identifying systemic disease. Objective of this study is assessment of the demographic and clinical characteristic, including comorbidities, of patients with acne with a special focus on adult female acne (AFA). This cross-sectional study analyzed the medical records of 354 patients with acne (323 outpatients and 31 hospitalized). Data concerning patient age, sex, lesions morphology and distribution on body areas, duration of the disease, Body Mass Index, and dermatologic and systemic comorbidities were collected. 61% of all patients were female, 45.37% of women were classified as AFA. The median age of patients with acne was 24 years and 32.5 years for AFA. The face was the most commonly affected area; patients with AFA had lesions on their back than less frequently non-AFA. Predominant eruptions were pustules and papules. 38.7% of patients had concomitant systemic chronic disease, 15.25% had an endocrinologic disorder, and 6.21% had thyroid gland dysfunction. Women with AFA had endocrinologic disorders more frequently (P=0.002), whereas cutaneous signs of hyperandrogenism were observed less frequently than in the non-AFA group (P=0.034). AFA possess distinct clinical features and it should raise suspicion towards possible underlying endocrinologic disturbance.

Stromal Vascular Fraction and its Role in the Management of Alopecia: A Review.

Adipose cells organized in small clusters under the reticular dermis closely interact with hair follicular cells and regulate the hair cycle. Intradermal adipocyte progenitor cells are activated toward the end of the telogen phase to proliferate and differentiate into mature adipocytes. These cells, surrounding the hair follicles, secrete signaling molecules that control the progression of the hair cycle. Diseases associated with defects in adipocyte homeostasis, such as lipodystrophy and focal dermal hypoplasia, lead to alopecia. In this review, we discuss the potential influence of stromal vascular fraction from adipose tissue in the management of alopecia as well as its involvement in preclinical and clinical trials.