Abstract:
:The pH of the skin is tightly regulated by endogenous buffering systems. We examined the influence of buffers of different pH and composition on skin barrier repair, pH, inflammation, and epidermal thickness/proliferation/differentiation. After tape-stripping in hairless mice buffers with pH 4-7 were applied in patch test chambers. After removal of the chambers, skin pH and transepidermal water loss (TEWL) were monitored for 24 h, and biopsies were taken for histology/immunohistology. Hairless mice showed a basal skin pH of about 5.8. Following barrier disruption and application of water, the pH increased by 0.6 units; increase in pH was reduced by the pH 4 glycolate buffer, unchanged by pH 4 citrate and pH 5.5 buffers, and even increased by the pH 7 buffer. pH 5.5, pH 4 citrate, and pH 4 glycolate buffers led to a slight, while the pH 7 buffer led to a significant increase in TEWL after barrier disruption compared to water. The pH 7 buffers led to a significant increase in epidermal thickness/proliferation/differentiation and inflammation after barrier disruption, whereas buffers with pH 4 and 5.5 caused a slight increase. In conclusion, only the pH 4 glycolate buffer significantly reduced the skin barrier disruption-related increase in skin pH. This was accompanied by only slight increase in epidermal thickness and inflammation compared to water. Application of the pH 7 buffer led to a significant increase in the skin pH, TEWL, epidermal thickness, and inflammation. The results are important for the formulation of topical products for effective acidification in pathological skin conditions.
journal_name
Skin Pharmacol Physioljournal_title
Skin pharmacology and physiologyauthors
Proksch E,Soeberdt M,Neumann C,Kilic A,Reich H,Abels Cdoi
10.1159/000501976subject
Has Abstractpub_date
2019-01-01 00:00:00pages
328-336issue
6eissn
1660-5527issn
1660-5535pii
000501976journal_volume
32pub_type
杂志文章abstract::The human skin barrier is an important part of the skin's intactness and its functionality is a precondition for healthy skin. Ingredients in cosmetic formulations, especially penetration enhancers, can influence this barrier function as they transport active agents into deeper skin layers. In this study different cos...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,随机对照试验
doi:10.1159/000354919
更新日期:2014-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000288165
更新日期:2010-01-01 00:00:00
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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
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000452743
更新日期:2016-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000086667
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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
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000365730
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journal_title:Skin pharmacology and physiology
pub_type: 临床试验,杂志文章
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000324053
更新日期:2011-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000081683
更新日期:2005-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000363149
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000443839
更新日期:2016-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000455237
更新日期:2017-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000501131
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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
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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
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000183924
更新日期:2009-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 临床试验,杂志文章
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,随机对照试验
doi:10.1159/000486136
更新日期:2018-01-01 00:00:00
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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
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000357222
更新日期:2014-01-01 00:00:00
abstract:BACKGROUND/AIMS:Keloids result from aberrations in the normal wound healing cascade and can lead to pruritus, contractures and pain. The underlying mechanisms of excessive scarring are not yet understood, and most therapeutic strategies remain unsatisfactory. Psoriasin (S100A7) and koebnerisin (S100A15) are released by...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000363579
更新日期:2015-01-01 00:00:00
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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
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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
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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::The sirtuins are a family of proteins that comprise class III of the histone deacetylases. These NAD+-dependent proteins have been found to be intricately involved in a variety of important and skin-relevant cellular functions and processes, including aging, UV damage response, oxidative stress, and wound repair. In a...
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,评审
doi:10.1159/000477417
更新日期:2017-01-01 00:00:00
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journal_title:Skin pharmacology and physiology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1159/000499436
更新日期:2019-01-01 00:00:00
abstract:OBJECTIVES/AIMS:The influence of emulsion droplet size on the skin penetration of a model drug, tetracaine, was studied. For this purpose, in vitro dermal and transdermal delivery of tetracaine from 6 emulsions (3 macro-emulsions with droplet sizes >1 microm and 3 nano-emulsions with droplet sizes <100 nm) were tested....
journal_title:Skin pharmacology and physiology
pub_type: 杂志文章
doi:10.1159/000106076
更新日期:2007-01-01 00:00:00