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Skin Pharmacology and Physiology

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https://www.readbyqxmd.com/read/28226316/clinical-evidence-of-increase-in-hair-growth-and-decrease-in-hair-loss-without-adverse-reactions-promoted-by-the-commercial-lotion-ecohair%C3%A2
#1
María Rosario Alonso, Claudia Anesini
BACKGROUND/AIMS: Hair exerts protection, sensory functions, thermoregulation, and sexual attractiveness. Hair loss (alopecia) is caused by several diseases, drug intake, hormone imbalance, stress, and infections (Malassesia furfur). Drugs usually used in alopecia produce irreversible systemic and local side effects. An association of extracts of Coffea arabica and Larrea divaricata (ECOHAIR®) is successfully being commercialized in Argentina for hair growth. The aim of this study was to provide scientific support for the efficacy and innocuousness of ECOHAIR® in patients with noncicatricial alopecia during a 3-month treatment...
February 23, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28222425/post-finasteride-adverse-effects-in-male-androgenic-alopecia-a-case-report-of-vitiligo
#2
Ion G Motofei, David L Rowland, Simona R Georgescu, Mircea Tampa, Stana Paunica, Vlad D Constantin, Cristian Balalau, Mirela Manea, Bogdan C Baleanu, Ioanel Sinescu
Finasteride has proved to be relatively safe and effective in the therapeutic management of male androgenic alopecia. However, literature data report several endocrine imbalances inducing various adverse effects, which often persist after treatment cessation in the form of post-finasteride syndrome. Here we present the case of a 52-year-old man receiving finasteride (1 mg/day) who developed an uncommon adverse effect represented by generalized vitiligo 2 months after finasteride discontinuation. Associated adverse effects encountered were represented by mild sexual dysfunction (as determined by the International Index of Erectile Function, IIEF) and moderate depressive symptoms (according to DSM-V criteria), all of these manifestations aggregating within/as a possible post-finasteride syndrome...
February 22, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28214837/efficacy-of-glucosamine-sulphate-in-skin-ageing-results-from-an-ex-vivo-anti-ageing-model-and-a-clinical-trial
#3
Audrey Gueniche, Isabelle Castiel-Higounenc
BACKGROUND: Glucosamine sulphate (GS) is essential in the biosynthesis of glycolipids, glycoproteins, glycosaminoglycans (GAGs), hyaluronate, and proteoglycans. Connective tissues primarily contain collagen and proteoglycans and play an important role in skin ageing. OBJECTIVE: The objectives were to assess ex vivo the impact of GS on skin ageing parameters and in vivo the effect of GS on the skin physiology of mature healthy volunteers after oral intake. METHODS: The impact of GS on skin ageing was assessed ex vivo via different immunohistochemical assays and histology and via a clinical study using biopsies...
February 18, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28152530/the-preventive-effect-of-coffee-compounds-on-dermatitis-and-epidermal-pigmentation-after-ultraviolet-irradiation-in-mice
#4
Yurika Yamate, Keiichi Hiramoto, Eisuke F Sato
BACKGROUND: Ultraviolet (UV) irradiation is well known to promote inflammation and pigmentation of skin. UVB mainly affects dermatitis and pigmentation. Coffee contains a number of polyphenols, such as caffeic acid (CA) and chlorogenic acid (CGA) but their in vivo bioactivity for photobiology remains unclear. METHODS: C57BL/6j male mice were irradiated with UVB (1.0 kJ/m2/day) for 3 days. Five days after the final session of UVB irradiation, the dorsal skin, ear epidermis, and blood samples were analyzed to investigate the inflammatory factors, melanogenesis factors and related hormones...
February 3, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28142143/nrf2-and-bach1-may-play-a-role-in-the-modulation-of-ultraviolet-a-induced-oxidative-stress-by-acetyl-11-keto-%C3%AE-boswellic-acid-in-skin-keratinocytes
#5
Shiying Yang, Bin Zhou, Wei Xu, Fangfang Xue, Muhammad Farrukh Nisar, Chunxiang Bian, Xiao Huang, Li Yang, Yiguo Zhang, Jörg W Bartsch, Julia Li Zhong
BACKGROUND: Exposure of human skin to solar ultraviolet A (UVA) irradiation causes severe oxidative stress with damage to various cellular components and concomitant inflammation and carcinogenesis. OBJECTIVE: The aim of this study is to investigate the protective effect of acetyl-11-keto-β-boswellic acid (AKBA) against UVA radiation on human skin keratinocytes. METHODS: HaCaT cells were pretreated with AKBA followed by UVA irradiation. Radiation effects on cell morphology, cell viability, intracellular reactive oxygen species (ROS) levels, and antioxidant enzymes were examined...
February 1, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28122376/sensitive-skin-assessment-of-the-skin-barrier-using-confocal-raman-microspectroscopy
#6
Renée J H Richters, Denise Falcone, Natallia E Uzunbajakava, Babu Varghese, Peter J Caspers, Gerwin J Puppels, Piet E J van Erp, Peter C M van de Kerkhof
BACKGROUND/AIMS: Sensitive skin (SS), a frequently reported condition in the Western world, has been suggested to be underlined by an impaired skin barrier. The aim of this study was to investigate the skin barrier molecular composition in SS subjects using confocal Raman microspectroscopy (CRS), and to compare it with that of non-SS (NSS) individuals as well as atopic dermatitis (AD) and allergic rhinoconjunctivitis (AR) subjects, who frequently report SS. METHODS: Subjects with SS (n = 29), NSS (n = 30), AD (n = 11), and AR (n = 27) were included...
January 26, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28099963/low-molecular-weight-hydrophilic-and-lipophilic-antioxidants-in-nonmelanoma-skin-carcinomas-and-adjacent-normal-looking-skin
#7
Konstantina Grammenandi, Maria Kyriazi, Alexandra Katsarou-Katsari, Othon Papadopoulos, Ioanna Anastassopoulou, Georgios T Papaioannou, Alexandros Sagriotis, Michail Rallis, Howard I Maibach
Low-molecular-weight antioxidants are some of the most efficient agents of the skin defense mechanism against environmental factors, such as cosmic rays, smoke, and pollutants. The total skin concentrations of hydrophilic ascorbic and uric acids, as well as lipophilic α-tocopherol, β-carotene, and ubiquinol-10 antioxidants were determined by an HPLC-EC detector from 18 biopsies of human nonmelanoma skin carcinomas and 18 biopsies from skin areas adjacent to carcinomas. No significant differences in the concentrations of lipophilic antioxidants in both carcinomas and normal-looking skin areas adjacent to carcinomas were observed...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28095386/in-vitro-evaluation-of-the-cleansing-effect-of-a-monofilament-fiber-debridement-pad-compared-to-gauze-swabs
#8
Cornelia Wiegand, Kirsten Reddersen, Uta-Christina Hipler, Martin Abel, Peter Ruth, Anneke Andriessen
BACKGROUND: Removal of nonvital tissue is an accepted method to eradicate biofilms and to stimulate wound healing. Debridement using a monofilament polyester fiber pad has clinically been shown to be effective as well as pain and trauma free. METHODS: For in vitro determination of the cleansing capacity of this product compared to gauze swabs, a wound debridement model was used with glass plates coated with a bovine serum albumin solution, stained with hematoxylin...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28088806/effects-of-aloe-sterol-supplementation-on-skin-elasticity-hydration-and-collagen-score-a-12-week-double-blind-randomized-controlled-trial
#9
Miyuki Tanaka, Yuki Yamamoto, Eriko Misawa, Kazumi Nabeshima, Marie Saito, Koji Yamauchi, Fumiaki Abe, Fukumi Furukawa
BACKGROUND/AIMS: Our previous study confirmed that Aloe sterol stimulates collagen and hyaluronic acid production in human dermal fibroblasts. This study aims to investigate whether Aloe sterol intake affects skin conditions. METHODS: We performed a 12-week, randomized, double-blind, placebo-controlled study to evaluate the effects of oral Aloe sterol supplementation on skin elasticity, hydration, and the collagen score in 64 healthy women (age range 30-59 years; average 44...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28052295/in-vitro-dermal-absorption-of-hydroquinone-protocol-validation-and-applicability-on-illegal-skin-whitening-cosmetics
#10
Bart Desmedt, Gamze Ates, Patricia Courselle, Jacques O De Beer, Vera Rogiers, Benoit Hendrickx, Eric Deconinck, Kristien De Paepe
In Europe, hydroquinone is a forbidden cosmetic ingredient. It is, however, still abundantly used because of its effective skin-whitening properties. The question arises as to whether the quantities of hydroquinone used become systemically available and may cause damage to human health. Dermal absorption studies can provide this information. In the EU, dermal absorption has to be assessed in vitro since the Cosmetic Regulation 1223/2009/EC forbids the use of animals. To obtain human-relevant data, a Franz diffusion cell protocol was validated using human skin...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28052293/skin-surface-topography-and-texture-analysis-of-sun-exposed-body-sites-in-view-of-sunscreen-application
#11
Verena Korn, Christian Surber, Georgios Imanidis
BACKGROUND/AIMS: To determine the roughness of the surface of human skin at highly sun-exposed anatomical sites in a wide age range in order to derive consequences for sunscreen application. METHODS: The forehead, cheek, nose, shoulder, and dorsal hand of 4 age groups (0-9, 20-39, 40-59, and >60 years) were investigated by replica formation, and areal topography was determined by confocal chromatic imaging. The arithmetic mean height as a roughness parameter and the void volume of the surface profile were calculated...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28013301/synthesis-of-a-sulfonimidamide-based-analog-of-tasisulam-and-its-biological-evaluation-in-the-melanoma-cell-lines-skmel23-and-a375
#12
Anne-Dorothee Steinkamp, Laurenz Schmitt, Xiaoyun Chen, Katharina Fietkau, Ruth Heise, Jens M Baron, Carsten Bolm
Tasisulam is a promising antitumor agent with complex pharmacology, which is used as an antiproliferative agent in patients with metastatic melanoma and other solid tumors. Phase 2 melanoma studies showed promising results but had to be stopped because of insufficient tasisulam clearance leading to toxic side effects. To reduce the negative effects of tasisulam, we synthesized a novel sulfonimidamide-based analog to evaluate its antiproliferative effects in comparison to the original compound by performing a cell proliferation assay in melanoma cell lines SKMel23 and A375...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28002830/erratum
#13
(no author information available yet)
No abstract text is available yet for this article.
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27925610/ex-vivo-cutaneous-bioavailability-of-topical-mometasone-furoate-in-an-o-w-preparation
#14
Johannes Wohlrab, Reinhard H H Neubert, Elfi Sommer, Julia Michael
Mometasone furoate (MMF) is a modern glucocorticoid of the 4th generation, which has been proven not only for inhalation but also for cutaneous treatment. Due to its lipophilic character, it is mainly used in ointments and creams with an outer lipophilic phase (W/O type). However, this study investigated the cutaneous cytotoxicology of MMF and tried to characterize its pharmacokinetic effects on the skin using an O/W preparation. An HPLC method has been developed and validated for the detection of MMF in cutaneous tissue, and concentration-time curves of MMF were created after cutaneous application on unaffected as well as lesional skin...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27871086/the-influence-of-two-different-foam-creams-on-skin-barrier-repair-of-foot-xerosis-a-prospective-double-blind-randomised-placebo-controlled-intra-individual-study
#15
Dorothee Daehnhardt, Stephan Daehnhardt-Pfeiffer, Judith Schulte-Walter, Thomas Neubourg, Eckhard Hanisch, Christel Schmetz, Marion Breuer, Regina Fölster-Holst
BACKGROUND/AIMS: Dry skin, or xerosis, is a common condition and a key feature of skin diseases like atopic dermatitis (AD) and ichthyosis vulgaris. Foot xerosis may exist without underlying disease and could be related to very mild forms of AD or ichthyosis vulgaris. The synthesis of important skin lipids (cholesterol, free fatty acids and ceramides) is reduced in xerosis and AD, and reduced lipid synthesis is responsible for a lack of lipids and enzymes in the skin barrier. This slows down reorganisation of the lipid lamellae in the stratum corneum (SC)...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27811481/dose-and-time-dependent-cellular-effects-of-cold-atmospheric-pressure-plasma-evaluated-in-3d-skin-models
#16
Cornelia Wiegand, Sarah Fink, Oliver Beier, Kerstin Horn, Andreas Pfuch, Arnd Schimanski, Bernd Grünler, Uta-Christina Hipler, Peter Elsner
BACKGROUND: Application of cold atmospheric pressure plasmas (CAPs) in or on the human body was termed 'plasma medicine'. So far, plasmas were utilized for sterilization of implants, other heat-sensitive products, or employed for chemical surface modifications. By now, CAPs are further used effectively for wound treatment. The present study analyses the effect of a plasma jet with air or nitrogen as process gas, previously evaluated for antimicrobial efficacy, on human cells using a 3D skin model...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27632407/in-vivo-anti-trichophyton-activities-of-seed-oil-obtained-from-caraganakorshinskii-kom
#17
Wenna Zhou, Heng Xu, Guangxiang Luan, HongLun Wang, Xiaoyan Wang, Mingkai Ji
AIM: The objective of this study was to evaluate the effects of seed oil of Caragana korshinskii Kom. against Trichophyton mentagrophytes on an in vivo guinea pig model of dermatophytosis. METHODS: The skin of albino guinea pigs was infected with T. mentagrophytes, and the animals were divided into five groups: negative control (NC group), positive control (PC group), vehicle control, CK50% group (received topical 50% seed oil of C.korshinskii), and CK100% group (received topical 100% seed oil of C...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27632222/ex-vivo-skin-permeation-of-betulin-from-water-in-oil-foams
#18
Anna Färber, Rolf Daniels
Triterpenes of the outer bark of birch are known to improve wound healing. An oleogel with these triterpenes as active principle is approved by the European Medicines Agency. As foams can be applied without touching the skin, they might be an advantageous application form. A comparable wound-healing effect can be expected when the permeation flux of the triterpenes from different types of formulations, namely oleogels, water-in-oil emulsions and water-in-oil foams, is similar. The tested formulations were based on three lipids (medium-chain trigylcerides, sunflower oil and paraffin) which differ in their polarity and solvent power for the triterpenes...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27548800/the-effect-of-glycation-on-epidermal-lipid-content-its-metabolism-and-change-in-barrier-function
#19
Mami Yokota, Yoshihiro Tokudome
BACKGROUND/AIMS: Advanced glycation end products, which are linked to both aging and hyperglycemia, cause marked functional and structural alterations in human skin. Though it is well known that the metabolism of glucose is closely associated with that of fatty acid (FA), sharing the same energy-yielding reaction pathways as glucose, its effect on the epidermis has been unclear so far. METHODS: Content of ceramides, cholesterol and FA in a reconstructed epidermal model glycated by glyoxal was analyzed by high-performance thin-layer chromatography...
2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27536769/major-depression-and-psoriasis-a-psychodermatological-phenomenon
#20
Hassaan Tohid, Daniyal Aleem, Chantal Jackson
OBJECTIVE: The aim of this paper was to highlight the mechanisms involved and the relationship between depression and psoriasis. METHOD: A comprehensive literature search was performed in various databases, and finally 88 studies were deemed relevant. RESULTS: A significant link was found between depression and psoriasis, primarily through immune mechanisms related but not limited to the actions of inflammatory cytokines such as tumor necrosis factor-α, interleukin 1 (IL-1), IL-2, IL-10, interferon-γ, IL-1β, prostaglandin E2, C-reactive protein, IL-6, and IL-8...
2016: Skin Pharmacology and Physiology
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