Abstract:
BACKGROUND:The vitamin D endocrine system, besides multiple other functions, regulates aging in many tissues, including the skin. It protects the skin against the hazardous effects of many skin age-inducing agents, including ultraviolet radiation. Thus, in the present study we aimed to investigate the relationship between facial skin aging and 25-hydroxyvitamin D [25(OH)D] serum levels in healthy Egyptian adults. METHODS:Sixty-one healthy adult subjects were included. Photodamage scores (erythema/telangiectasias, lentigines, hyperpigmentation and coarse wrinkling) were assessed and graded. Serum vitamin D was measured using enzyme immunoassay and subjects were classified as sufficient, insufficient or deficient according to the vitamin level. RESULTS:The mean 25(OH)D serum level was 43.90 nmol/l. A high prevalence of vitamin D deficiency was detected in the studied subjects regardless of their age or gender. Also, vitamin D levels were not correlated with photodamage scores and were not affected by the Fitzpatrick skin phototype, duration of sun exposure per day or the use of sunscreens (p > 0.05 for all). CONCLUSIONS:Aging is a complex process that is influenced by many genetic and environmental factors. Facial aging is not correlated with serum vitamin D level, and clinical trials using oral or topical vitamin D to combat aging are better predictors of its effects rather than in vivo studies.
journal_name
Skin Pharmacol Physioljournal_title
Skin pharmacology and physiologyauthors
Dawoud NM,Bakry OA,Shoeib MA,Ismael HNdoi
10.1159/000443839subject
Has Abstractpub_date
2016-01-01 00:00:00pages
76-82issue
2eissn
1660-5527issn
1660-5535pii
000443839journal_volume
29pub_type
杂志文章abstract::An investigation was undertaken to determine the possible mechanisms of action of medicinal plants used for dermatological pathologies. A total of 14 plant species were selected from the readily available ethnobotanical literature. 5-Lipoxygenase and DPPH (2,2-diphenyl-1-picrylhydrazyl) assays were used to determine t...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000095253
更新日期:2006-01-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:After birth, skin barrier function is in state of flux and at risk of dysfunction. In a prospective clinical study, we compared the effects of 2 standard cleansing procedures on skin barrier function in newborns. METHODS:Fifty-seven healthy full-term neonates aged < or = 48 h were randomly as...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,随机对照试验
doi:10.1159/000235552
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND:Dry skin induced by rheumatoid arthritis (RA) causes itching, which negatively influences a patient's quality of life. We previously reported that mast cells are related to dry skin in arthritic mice. However, the mechanism of mast cell activation is unclear. In this study, we examined the mechanism underlyi...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000488250
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:About 50% of the sun's radiation arriving on earth is visible light (VIS). For a long time, its effects on human health have not been fully investigated. But recently, the influence of VIS has gained more attention, especially regarding skin physiology. Studies showed various effects, many of them harmful, c...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000501131
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Cetuximab is a member of a new family of antineoplastic agents that inhibit the epidermal growth factor receptor (EGF-R), and which are increasingly being used in the treatment of solid tumors. METHODS:We have observed new secondary side effects. We present here 2 patients with acneiform eruption secondary ...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000106075
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVE:Epicutaneous application of capsaicin causes a long-lasting analgesic effect by binding to the membrane transient receptor potential vanilloid 1 (TRPV1) on mechanoheat-sensitive C and Aδ fibres, changing axonal integrity and inhibiting neurogenic inflammatory processes. To date, no information is available re...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000362740
更新日期:2015-01-01 00:00:00
abstract::Despite sensitive skin being highly prevalent, no consensus on the definition and pathomechanism of sensitive skin exists. Here we report the results of a systematic literature review of diagnostic methods for sensitive skin at clinical, histological and biophysical levels. A systematic search revealed 27 out of 1,701...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000363149
更新日期:2015-01-01 00:00:00
abstract::A therapeutic endpoint is a very important tool to evaluate response in clinical trials. In 2005, a consensus statement identified two late endpoints of disease activity in pemphigus: complete remission off therapy and complete remission on therapy, both definitions applying to patients without lesions for at least 2 ...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000430101
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:Percutaneous penetration of urea in vivo in man has been documented. If urea can penetrate the skin, it may also move laterally. Lateral spreading of topical substances leads to unpredictable penetration dynamics and increased skin surface area exposure. METHODS:The ability of urea, a low molecular-weight h...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000363148
更新日期:2015-01-01 00:00:00
abstract:BACKGROUND:The lipid components and natural moisturizing factors (NMFs) of the stratum corneum (SC) are integral pieces of the self-regulating barrier strategy which comprises one of the most important functions of human skin and seems to be related to biomechanical responses of the SC. OBJECTIVES:This work presents t...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000507456
更新日期:2020-01-01 00:00:00
abstract::Oral ingestion of collagen peptides (CP) has long been suggested to exert beneficial effects on the skin, but the molecular events induced by CP on the skin remain unclear. Here, we investigated the effects of oral CP administration on gene expression in hairless mouse skin and of prolyl-hydroxyproline (Pro-Hyp), a co...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000369830
更新日期:2015-01-01 00:00:00
abstract::Neoplastic skin lesions are multifocal, diffuse skin infiltrations of particular relevance in the differential diagnosis of ulcerative, nodular, or crusting skin lesions. Nonmelanoma skin cancers (NMSCs), namely, basal cell carcinoma (BCC), squamous cell carcinoma (SCC), and also actinic keratosis (AK), are the most c...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000479529
更新日期:2018-01-01 00:00:00
abstract:BACKGROUND:Research has revealed new insights into the pathogenesis of psoriasis, leading to new therapeutic options. So far the order of changes in the pathogenesis of psoriasis is unclear. The responses to cutaneous leukotriene B4 (LTB4) application have been studied in the past as an in vivo model for inflammation. ...
journal_title:Skin pharmacology and physiology
pub_type: 临床试验,杂志文章
doi:10.1159/000354119
更新日期:2014-01-01 00:00:00
abstract::It is preferred that topically administered drugs act either dermally or transdermally. For that reason they have to penetrate into the deeper skin layers or permeate the skin. The outermost layer of the human skin, the stratum corneum, is responsible for its barrier function. Most topically administered drugs do not ...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000091978
更新日期:2006-01-01 00:00:00
abstract::Cutaneous irritation presents a major health problem with serious social and occupational impact. The interaction between an irritant and the human skin depends on multiple factors: the intrinsic properties and the nature of the irritant itself, and specific individual- and environment-related variables. The main path...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000131077
更新日期:2008-01-01 00:00:00
abstract:INTRODUCTION:Flare reactions arise due to the release of vasodilators from sensory nerves caused by antidromic transmission of action potentials after the induction of itch. OBJECTIVE:We investigated the link between flare and itch using 3 models of itch. METHODS:Skin provocations with histamine, capsaicin, and cowha...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000508795
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVES:Retinoic acid (RA) and benzoyl peroxide (BP) were studied, comparing their keratolytic efficacy and water barrier disruption to that of salicylic acid (SA), a well-established keratolytic, under similar conditions. PATIENTS/METHODS:Six volunteers were included in this blinded study. Eleven randomized test s...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,随机对照试验
doi:10.1159/000093984
更新日期:2006-01-01 00:00:00
abstract::In animal wound models, accelerated wound closure has been shown by use of polihexanide applied in antimicrobially effective concentrations. Additionally, an increased ATP production of keratinocytes in vitro induced by polihexanide was demonstrated and interpreted as a stimulatory effect on cell proliferation. Based ...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000319602
更新日期:2010-01-01 00:00:00
abstract::In the present study, we investigated the effects of tomato extract (TE) containing lycopene and palm fruit extract (PE) rich in carotenoids on the growth and pigmentation of melanocyte cultures of Caucasian origin. The extracts were tested at different concentrations and in combination with vitamins E and C. Melanocy...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000080217
更新日期:2004-09-01 00:00:00
abstract:PURPOSE:Polymethylmethacrylate (PMMA) plates generally used for the in vitro testing of sunscreens have failed to yield a satisfactory correlation between the sun protection factor (SPF) in vitro and that in vivo. In the present study, various polymers were investigated as alternative substrates to PMMA plates. PROCED...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000464471
更新日期:2017-01-01 00:00:00
abstract::Despite its remarkable barrier function, the skin remains an attractive site for systemic drug delivery given its easy accessibility, large surface area and the possibility to bypass the gastrointestinal tract and the liver and so modify drug absorption kinetics. The pioneering work of Scheuplein, Higuchi and others i...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000351815
更新日期:2013-01-01 00:00:00
abstract::Squalene is a major sebum lipid which is easily peroxidized by ultraviolet A (UVA) irradiation, generating products that can stress keratinocytes. Prevention of squalene photooxidation with antioxidants could potentially help defend skin from environmental stress. Previously, we have systematically characterized butyl...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000501731
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND/AIMS:Wound healing is a complex regeneration process involving the degradation and reassembly of connective tissues and skin layers. Previous studies have shown that pH plays a significant role in both the direct and indirect regulation of cellular processes in the wound, which, in turn, affect the wound heal...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000447016
更新日期:2016-01-01 00:00:00
abstract: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 pathwa...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000448121
更新日期:2016-01-01 00:00:00
abstract::Histone deacetylase inhibitors (HDACi), a relatively new group of epigenetic agents, are being investigated as powerful chemotherapeutics because of their antiproliferative and prodifferentiation effects both in vitro and in vivo, in various tumor cell lines. Only little is known with respect to their effects on norma...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000351363
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND/AIM:The skin, as the outermost organ, protects against exogenous hazards (outside-in barrier) and prevents the loss of essential parts of the body (inside-out barrier). The epidermal barrier exerts several functions with specific morphological elements. Regional differences in skin functions are well known. ...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000330721
更新日期:2012-01-01 00:00:00
abstract:PURPOSE:To use high-speed differential scanning calorimetry (DSC) in the identification of transitions in human stratum corneum (SC). Several scanning rates (100 degrees C/min to 400 degrees C/min) are used. RESULTS:Eight transitions from 0 to 120 degrees C are detected in a significant number of samples. Most of thes...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000092593
更新日期:2006-01-01 00:00:00
abstract::Combined ATR-FTIR (attenuated total reflection-Fourier transform infrared) spectroscopy and tape-stripping experiments in vitro on porcine ear skin were used to investigate the spatial distribution of different surfactants in the stratum corneum (SC). To reveal a possible connection between the size of the formed mice...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000368444
更新日期:2015-01-01 00:00:00
abstract::The cyclicity of time affects virtually all aspects of our being and is the basis of the underlying rhythmicity which is typical of our lives. To 'tell time', most living organisms use internal timing mechanisms known as 'biological clocks'. These 'clocks' coordinate our physiological and behavioral functions and inte...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000093113
更新日期:2006-01-01 00:00:00
abstract::In the present study, we evaluated the protective action of cream preparations containing seven different types of marigold and rosemary extracts in vivo in healthy volunteers with experimentally induced irritant contact dermatitis (ICD). Marigold and rosemary extracts in base cream DAC (Deutscher Arzneimittel-Codex =...
journal_title:Skin pharmacology and physiology
pub_type: 临床试验,杂志文章
doi:10.1159/000085865
更新日期:2005-07-01 00:00:00