Abstract：
:Linoleic acid is required for the formation and maintenance of the epidermal barrier, but most of the current in vitro keratinocyte culture systems are linoleic acid-deficient. The aim of the present study was to examine the efficiency of linoleic acid uptake in human keratinocyte cultures grown under submerged and air-exposed conditions in serum-free medium. The water-insoluble linoleic acid was bound to carrier molecules (cyclodextrin or bovine serum albumin). Comparable results were obtained with home-made and commercially available linoleic acid complexes. In the submerged cultures, the increase of the linoleic acid medium concentration (ranging from 0 to 20 microg/ml) resulted in a gradual increase in the linoleic acid cellular content, which exceeded 1.4 times the value found in native epidermis when the highest concentration of linoleic acid was used. The addition of linoleic acid did not alter the profile of the other epidermal fatty acids, with the exception of oleic acid, which decreased in parallel with the increasing linoleic acid content. While the content of linoleic acid found in phospholipids was similar to that in native epidermis, a large excess of linoleic acid was detected in triglycerides, the synthesis of which was markedly increased in cultures grown submerged in medium containing higher concentrations of linoleic acid. Under air-exposed conditions, the dermal substrate used seemed to be the most limiting factor for efficient linoleic acid supplementation. A low linoleic acid cellular content was detected when an inert filter was used. De-epidermized dermis was found to be the most permeable substrate for linoleic acid complexes. The cellular linoleic acid content increased in a parallel with the increasing linoleic acid concentration (ranging from 4 to 30 microg/ml), but the overall amount incorporated was lower than that in submerged cultures. The content of linoleic acid in the phospholipid and ceramide fractions isolated from reconstructed epidermis grown under air-exposed conditions was close to that of native epidermis, but the triglycerides remained abnormally enriched in linoleic acid, indicating persistence of some anomalies in epidermal lipogenesis in vitro.
journal_name
Arch Dermatol Resjournal_title
Archives of dermatological researchauthors
Vicanová J,Weerheim AM,Kempenaar JA,Ponec Mdoi
10.1007/s004030050430keywords:
subject
Has Abstractpub_date
1999-07-01 00:00:00pages
405-12issue
7-8eissn
0340-3696issn
1432-069Xjournal_volume
291pub_type
杂志文章abstract：:An animal experiment is presented in which two groups of pigmented hairless mice were exposed daily to suberythemal doses of UVA to study tumourigenesis. The aim of the study was to estimate the carcinogenic risks of tanning by UVA. The pigmented hairless mice, Skh-hr2, were separated by selective breeding into two gr...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00375721
更新日期：1990-01-01 00:00:00
abstract：:Enhanced susceptibility to viral infections has been reported repeatedly in atopic dermatitis (AD). A difference in the capacity to produce interferons (IFN) in response to viral antigens may be the cause. In the present study we investigated the in vitro IFN production of leukocytes from AD patients in response to di...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00585921
更新日期：1987-01-01 00:00:00
abstract：:Thrombin has recently been shown not only to exert procoagulant activities, but also to induce mitogenic responses of different cell types involved in wound healing via binding to and cleavage of the thrombin receptor. In order to further explore these aspects of thrombin function, human keratinocytes (HaCaT cell line...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030000168
更新日期：2000-10-01 00:00:00
abstract：:The distribution of several markers of keratinocyte differentiation was studied in normal epidermis, basal cell carcinomas (BCCs), and squamous cell carcinomas (SCCs) using the immunoperoxidase technique on frozen sections of punch biopsy specimens. As markers a panel of chain-specific monoclonal antibodies (MoAbs) di...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00426583
更新日期：1989-01-01 00:00:00
abstract：:The aim of this study was to screen the antioxidant, anti-hyaluronidase, and anti-elastase activity of the lyophilized juice of Cucumis sativus fruit (CSLJ). The CSLJ was subjected to DPPH and superoxide radical scavenging assay in reference to butylated hydroxytoluene. The hyaluronidase and elastase inhibitory assay ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-010-1103-y
更新日期：2011-05-01 00:00:00
abstract：:This study determines if the anatomic region affected percutaneous absorption in the rhesus monkey, an animal model with some relevance to man. Percutaneous absorption of testosterone (13.3 microgram/cm2) from the ventral forearm was 8.8 +/- 2.5%. Absorption from the chest was slightly less (5.3 +/- 0.6%) while that f...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00403844
更新日期：1980-01-01 00:00:00
abstract：:The distribution coefficient of caffeine (water/n-Octanol) and the estimation of caffeine in urine after local application indicate to a high permeation rate of caffeine through the skin. This could be confirmed by using different vehicles in vivo and in vitro. 14C labeled caffeine penetrates rapidly the epidermis and...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00418573
更新日期：1979-11-01 00:00:00
abstract：:The hair cycling pattern differs between humans and mice: for the former it is mosaic, while the latter show a wave pattern. We focused on the presence or absence of synchronization of the hair cycle based on the distribution of Merkel cells. The three-dimensional distribution and number of Merkel cells in the skin at...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030050474
更新日期：2000-04-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-016-1624-0
更新日期：2016-04-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-014-1494-2
更新日期：2014-11-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00585916
更新日期：1987-01-01 00:00:00
abstract：:Interleukin-6 (IL-6) is a multifunctional cytokine which has been suggested to function as an autocrine mitogen in psoriatic epidermis. We report here the results of several experiments designed to further examine this hypothesis. Blot hybridization was unable to detect 1.3 kb IL-6 transcripts in RNA extracted from no...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00372034
更新日期：1992-01-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00417712
更新日期：1988-01-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-018-1828-6
更新日期：2018-07-01 00:00:00
abstract：:Numerous chemicals to which humans are exposed either therapeutically or as a result of living in an industrial environment constitute a potential threat as carcinogens, mutagens, and/or tumor promoters and cocarcinogens. Anthralin, and antipsoriatic agent, acts as a tumor promoter for Balb/c-3T3 mouse embryo cell cul...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00429985
更新日期：1988-01-01 00:00:00
abstract：:Although cell death by apoptosis has been recognized as an important control mechanism in the maintenance of tissue homeostasis and in the elimination of cells with damaged DNA, information on the induction and characteristics of apoptosis in keratinocytes is rather scarce. Apoptotic mechanisms may play an important r...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF02505277
更新日期：1996-10-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章,评审
doi：10.1007/s00403-019-01991-0
更新日期：2020-07-01 00:00:00
abstract：:Ultraviolet radiation is the major environmental insult to the skin and stimulates the synthesis of melanin in melanocytes, which then distribute it to the neighboring keratinocytes where it confers photo-protection. Skin color results from the paracrine interaction between these two cell types. Recent studies suggest...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-011-1126-z
更新日期：2011-04-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-016-1654-7
更新日期：2016-08-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00371798
更新日期：1994-01-01 00:00:00
abstract：:The topical application of a mixture of sugar and povidone--iodine (PI) has been reported to accelerate the healing of cutaneous wounds and ulcers by promoting re-epithelialization and granulation tissue formation as well as having an anti-microbial effect. To clarify the mechanisms accounting for the efficacy of a 70...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-006-0683-z
更新日期：2006-09-01 00:00:00
abstract：:Histamine is released from mast cells in the skin, causing urticaria and itching. However, little is known about the roles of histamine in development of eczematous lesions in contact dermatitis. Effects of histamine on development of eczematous lesions in contact dermatitis were assessed using histamine-deficient mic...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-005-0569-5
更新日期：2005-08-01 00:00:00
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journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00509061
更新日期：1982-01-01 00:00:00
abstract：:There are differences concerning reported mortality rates and prognostic factors of bullous pemphigoid (BP) patients in different studies. Our objectives were to evaluate the mortality rates and prognostic factors among Israeli BP patients compared to matched control subjects. Three age- and sex-matched patients witho...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-018-1875-z
更新日期：2019-01-01 00:00:00
abstract：:In a group of 40 patients suffering from wide-spread psoriasis oral administration of a retinoid (Ro 10-9359) was followed by PUVA therapy. The clearance rate was increased by 30% as compared to PUVA alone. Except for cheilitis no side effects were seen. Histological analysis in 20 patients before, during and after th...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00412661
更新日期：1979-05-04 00:00:00
abstract：:Using a sensitive and modified solid-phase radioimmunoassay for detecting anti-cardiolipin antibodies, sera of 45 patients with lepromatous leprosy were examined. Nine of the 45 (20%) showed positive levels of anti-cardiolipin antibodies. Inhibition tests revealed that these antibodies significantly cross-reacted with...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00407745
更新日期：1986-01-01 00:00:00
abstract：:In the study described here we investigated the possibility of an association between the aggressiveness of melanoma and multidrug resistance phenotype by analyzing the expression and activity of P-glycoprotein (Pgp) in two genetically related transplantable hamster melanomas--a melanotic (Ma) and an amelanotic (Ab) f...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030000146
更新日期：2000-07-01 00:00:00
abstract：:Stratum corneum forms the UV barrier. The effect of ultraviolet B (UVB) on normal skin was extensively studied; however, its effect on barrier perturbed skin remains undefined. Both barrier perturbation and UVB irradiation induce endoplasmic reticulum (ER) stress and unfolded protein response (UPR) in keratinocytes. M...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-017-1753-0
更新日期：2017-09-01 00:00:00
