Abstract:
:Human sebaceous gland possesses all the steroidogenic enzymes required for androgen synthesis. It remains unclear whether the testosterone produced in situ mainly derives from circulating dehydroepiandrosterone (DHEA) or from de novo synthesis utilizing serum cholesterol. Using testosterone radioimmunoassay, we found that testosterone was barely detectable in the supernatant of cultured human SZ95 sebocytes when cholesterol was added alone, indicating a low basal expression of steroidogenic acute regulatory protein (StAR) in SZ95 cells. Human chorionic gonadotropin and fibroblast growth factor-9 were as potent as forskolin in activating StAR to enhance testosterone production, while interleukin-1 beta, dexamethasone, insulin and insulin-like growth factor-1 showed no stimulatory effect. A two-fold increase of testosterone production was observed in supplementation of DHEA as compared to pregnenolone, progesterone or 17 alpha-hydroxyprogesterone. Based on our findings, testosterone synthesized in cultured sebocytes derived mainly from DHEA and inhibition of 3beta-hydroxysteroid dehydrogenase and 17beta-hydroxysteroid dehydrogenase may be a new target of androgen suppression for acne treatment.
journal_name
Exp Dermatoljournal_title
Experimental dermatologyauthors
Chen W,Tsai SJ,Sheu HM,Tsai JC,Zouboulis CCdoi
10.1111/j.1600-0625.2009.00996.xsubject
Has Abstractpub_date
2010-05-01 00:00:00pages
470-2issue
5eissn
0906-6705issn
1600-0625pii
EXD996journal_volume
19pub_type
信件abstract::Lipoid proteinosis (OMIM 247100), also known as Urbach-Wiethe disease or hyalinosis cutis et mucosae, is a rare autosomal recessive disorder characterized by generalized thickening and scarring of the skin and mucosae. In 2002, the disorder was mapped to a locus on chromosome 1q21 and pathogenic mutations were identif...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0625.2007.00608.x
更新日期:2007-11-01 00:00:00
abstract::Pro- and anti-apoptotic members of the Bcl-2 family are fundamental in the control of apoptosis. Among them, Bax plays a key role in apoptosis induction by mediating the release of apoptogenic factors from mitochondria to the cytosol. In this report, we investigated, by immunohistofluorescence, the in vivo distributio...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2007.00660.x
更新日期:2008-02-01 00:00:00
abstract:INTRODUCTION:The aetiology of mycosis fungoides and parapsoriasis (which may be considered as an early stage of mycosis fungoides) remains debated. Previous recent studies have suspected the involvement of viral agents and particularly human herpes viruses (HHV).The aim of the present study was to screen for the presen...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2008.00787.x
更新日期:2009-04-01 00:00:00
abstract::There are few contradictory studies investigating the involvement of HPV in melanoma. We designed a controlled study to evaluate the HPV DNA prevalence in melanoma. One hundred patients with cutaneous malignant melanoma diagnosed between 2002 and 2006 were included. Complementary wide excision (healthy skin) was perfo...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2009.00866.x
更新日期:2009-10-01 00:00:00
abstract::Stratum corneum (SC) exposed to living tissues, induces inflammation characterized by the formation of mixed cell granulomas consisting of infiltrative polymorphonuclear leukocytes (PMNs) and monocytes/macrophages. In this study, to clarify the mechanism for the later monocyte accumulation in SC-induced granulomas, we...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1998.tb00316.x
更新日期:1998-08-01 00:00:00
abstract::Immune escape mechanisms of cancers include some of the mechanisms normally used for immune homeostasis, particular those preventing autoimmunity; one of these is the polarisation of myeloid cells. Thereby, tumors, i.e. the cancerous and stromal cells, also condition distant sites like spleen and bone marrow via solub...
journal_title:Experimental dermatology
pub_type: 评论,杂志文章
doi:10.1111/exd.12241
更新日期:2014-03-01 00:00:00
abstract::Solar ultraviolet (UV) radiation has hazardous effects on human health that are, in part, associated with its immunosuppressive effects via the induction of interleukin (IL)-10 production. Although IL-10 is produced by both T helper type 2 (Th2) cells and T-regulatory type 1 (Tr1) cells, the relative contribution of e...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2006.00452.x
更新日期:2006-08-01 00:00:00
abstract::External assault to the skin is followed by an epidermal response including synthesis of DNA, lipids, cytokines and migration of antigen presenting cells. MIP-3 alpha (CCL20, LARC, Exodus-1, Scya20) is a recently described C-C chemokine, predominantly expressed in extralymphoid tissue, which is known to direct migrati...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1034/j.1600-0625.2002.110205.x
更新日期:2002-04-01 00:00:00
abstract::Anthralin is a widely used topical anti-psoriatic drug that may have an immunomodulating effect on alopecia areata (AA) as it does in psoriasis. The aims of the present study were to investigate the effects of anthralin on hair growth in balding C3H/HeJ mice affected by an AA-like disease and to study the underlying m...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2004.00098.x
更新日期:2004-01-01 00:00:00
abstract::Inflammation is a crucial step in the development of allergic contact dermatitis. The primary contact with chemical allergens, called sensitization, and the secondary contact, called elicitation, result in an inflammatory response in the skin. The ability of contact allergens to induce allergic contact dermatitis corr...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2010.01136.x
更新日期:2010-11-01 00:00:00
abstract::Mycosis fungoides (MF) is the most frequent variant of cutaneous T-cell lymphomas (CTCLs). MF primarily involves the skin initially with patches and plaques. In later stages, cutaneous tumors develop and tumor cells may spread to lymph nodes and finally to visceral sites. Here, we describe an animal model for MF in im...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.0906-6705.2004.00201.x
更新日期:2004-07-01 00:00:00
abstract::Epidermolytic hyperkeratosis (EHK) is a hereditary skin disorder typified by blistering due to cytolysis. One in 100,000 individuals is affected by this autosomal-dominant disease. The onset of the disease phenotype is typically at birth. Histological and ultrastructural examination of the epidermis shows a thickened ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1034/j.1600-0625.2000.009001016.x
更新日期:2000-02-01 00:00:00
abstract::We investigated the effects of a single dose of mouse interleukin-31 (IL-31) on scratching behaviour in comparison with spontaneous skin-lesion- or serotonin (5-HT)- induced scratching behaviour in NC/Nga and BALB/c mice. Intradermal (i.d.) injection of IL-31 caused a gradual increase in long-lasting scratching (LLS, ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12222
更新日期:2013-10-01 00:00:00
abstract::Several association studies and GWAS on melanoma skin cancer risk have reported statistically significant signals on 9p21.3 region, where MTAP gene maps. None of the associated SNPs identified in these studies lie in the coding region of the gene and the causative relation of risk alleles with melanoma predisposition ...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/exd.13247
更新日期:2017-08-01 00:00:00
abstract::UVA(Ultraviolet A)-induced gene expression is supposed to be a hallmark for inflammation, for immunosuppression and in long-term cancer formation. In previous studies, we have shown for keratinocytes that physiological doses of UVA radiation result in the upregulation of gene expression mediated by ceramide formation ...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2011.01350.x
更新日期:2011-11-01 00:00:00
abstract::The correlation between the degrees of integrity and cohesion in healthy human Stratum corneum (SC) and the properties of the SC lipid matrix could be examined non-invasively in vivo using ATR-FTIR spectroscopy and measurements of pH, conductance, and transepidermal water loss (TEWL) taken in the course of tape-stripp...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2010.01164.x
更新日期:2011-03-01 00:00:00
abstract::Interleukin (IL)-24 is the protein product of melanoma differentiation-associated gene 7 (MDA-7). Originally identified as a tumor suppressor molecule, MDA-7 was renamed IL-24 and classified as a cytokine because of its chromosomal location in the IL-10 locus, its mRNA expression in leukocytes, and its secretory seque...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2010.01077.x
更新日期:2010-08-01 00:00:00
abstract::TNF is critically involved in the pathogenesis of psoriasis. TL1A is a TNF-like cytokine, which, after binding to death domain receptor DR3, provides costimulatory signals to lymphocytes, amplifies Th1- and Th17-mediated immune responses and induces apoptotic cell death. These functions are inhibited when TL1A associa...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2011.01304.x
更新日期:2011-09-01 00:00:00
abstract::There is likely general consensus within the skin research community that cell cycle control is critical to epidermal homeostasis and disease. The current predominant model proposes that keratinocytes switch off DNA replication and undergo cell cycle and cell growth arrest as they initiate terminal differentiation. Ho...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/exd.12287
更新日期:2014-02-01 00:00:00
abstract::Mast cells (MCs) have been intensely investigated over the past two decades, e.g. the numbers of PubMed-listed reports on MCs have steadily increased and doubled over the past twenty years. Surprisingly, many recent findings that have fundamentally changed our understanding of MC biology and functions have yet to be s...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1111/j.1600-0625.2005.00369.x
更新日期:2005-12-01 00:00:00
abstract::Tropisetron is a serotonin receptor (5-HT-R)-modulating agent and approved as an antiemetic for patients undergoing chemotherapy. In the gut, it acts via specific serotonin receptors, 5-HT3 -R, to elicit its beneficial effects against nausea. We investigated whether tropisetron can affect inflammatory cell responses o...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.13883
更新日期:2019-03-01 00:00:00
abstract::Pseudoxanthoma elasticum (PXE), a systemic heritable connective tissue disorder, is characterized by progressive calcification of elastic structures in the skin, the eyes and the cardiovascular system, with considerable intra- and interfamilial phenotypic variability. Recently, underlying genetic defects have been ide...
journal_title:Experimental dermatology
pub_type: 杂志文章,评审
doi:10.1034/j.1600-0625.2001.100401.x
更新日期:2001-08-01 00:00:00
abstract::Ichthyosis follicularis, alopecia and photophobia (IFAP) syndrome is an X-linked genodermatosis with congenital atrichia being the most prominent feature. Recently, we have shown that functional deficiency of MBTPS2 (membrane-bound transcription factor protease site 2) - a zinc metalloprotease essential for cholestero...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2010.01238.x
更新日期:2011-05-01 00:00:00
abstract::For screening of a potential irritant it is essential that an early marker for irritation should be chosen which could be detected before the physiological signs of irritation occur. Interleukin 1 alpha (IL-1alpha) is widely accepted as such a marker in both in vivo and in vitro test systems. In this study, we have de...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1034/j.1600-0625.2001.110304.x
更新日期:2002-06-01 00:00:00
abstract::There have been several studies on the role of the monocyte chemotactic protein-1/C-C chemokine receptor type 2 (CCR2) signalling pathway in fibrotic diseases, which identified the blockade of this pathway as a potential therapeutic target for treating fibrosis. We examined the efficacy of CCR2 antagonist (RS-504393) ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.14088
更新日期:2021-01-01 00:00:00
abstract::Canine atopic dermatitis (AD), a chronic inflammatory skin disease, shares characteristics with its human counterpart. To get insight into the role of enzymes involved in production of prostaglandin E(2) (PGE2) and leukotriene B(4) (LTB(4)), potent inflammatory mediators originating from membrane-derived arachidonic a...
journal_title:Experimental dermatology
pub_type: 信件
doi:10.1111/j.1600-0625.2009.01037.x
更新日期:2010-08-01 00:00:00
abstract::Psychological factors are believed to play a role in the pathogenesis of alopecia areata (AA), a frequently encountered hair disorder. In our study, statistically significant elevation of psychological stress was felt by AA patients prior hair loss compared with control, which was strongly believed contributory to hai...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.2006.00443.x
更新日期:2006-07-01 00:00:00
abstract::The capacity of adult hair follicle dermal cells to participate in new follicle induction and regeneration, and to elicit responses from diverse epithelial partners, demonstrates a level of developmental promiscuity and influence far exceeding that of interfollicular fibroblasts. We have recently suggested that adult ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1034/j.1600-0625.2003.00106.x
更新日期:2003-04-01 00:00:00
abstract::Irradiation with ultraviolet (UV) B light results in the formation of apoptotic keratinocytes called sunburn cells (SC). Although generation of SC appears to be one of the most characteristic features of UV-induced skin damage and has been a well-known phenomenon for a long time, the mechanisms involved are not quite ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/j.1600-0625.1997.tb00138.x
更新日期:1997-02-01 00:00:00
abstract::Electrical stimulation is being used in variable skin therapeutic conditions. There have been clinical studies demonstrating the positive effect of electrical stimuli on hair regrowth. However, the underlying exact mechanism and optimal parameter settings are not clarified yet. To investigate the effects of different ...
journal_title:Experimental dermatology
pub_type: 杂志文章
doi:10.1111/exd.12827
更新日期:2015-12-01 00:00:00