Abstract：
:The established mouse epidermis-derived cell line HEL/30 was incubated in the presence of 3H arachidonic acid (AA) for 1 h. After medium removal, cells were reincubated with fresh medium in the presence or absence of the calcium ionophore A23187 and tumor promoter 12-O-tetradecanoyl-phorbol-13-acetate (TPA). The AA metabolites formed were extracted from cell-free medium and analyzed using TLC and HPLC. The distribution of the recovered radioactivity showed PGE2, 15-hydroxy-eicosatetraenoic acid (15-HETE), and leukotriene B4 (LTB4), as major products of AA metabolism. The presence of calcium ionophore A23187 increased the release of radioactivity, without affecting the profile of metabolites present in the medium. TPA elicited a preferential increase of cycloxygenase metabolism, this effect being reversed by indomethacin. 5,8,11,14-eicosatetraynoic acid (ETYA) almost completely inhibited LT and HETE formation in A23187 and TPA-treated cells. The results show that HEL/30 cells are able to metabolize AA via both cyclo- and lipoxygenase pathways and that these activities can be modified by chemical means. This cell line might be a suitable tool for studying the involvement of arachidonic acid cascade in cell response to exogenous stimuli.
journal_name
Arch Dermatol Resjournal_title
Archives of dermatological researchauthors
Tragni E,Caruso D,Porta S,Fumagalli R,Galli G,Galli CLdoi
10.1007/BF00429984subject
Has Abstractpub_date
1988-01-01 00:00:00pages
437-42issue
7eissn
0340-3696issn
1432-069Xjournal_volume
280pub_type
杂志文章abstract：:Psoriasis was initially considered to represent a disease of abnormal epidermal keratinocyte proliferation. Proliferation of keratinocytes is restricted by apoptotic cell death to maintain a constant thickness of epidermis. Nucleosomes are mainly released by apoptotic cells. Tumor necrosis factor-α (TNF-α) is an impor...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-013-1347-4
更新日期：2013-08-01 00:00:00
abstract：:Propylene glycol (propane-1,2-diol) is the only diol widely used in dermatology. Pentane-1,5-diol is mainly used as a plasticizer in cellulose products and adhesives, in dental composites and in brake fluid compositions and as a preservative for grain. However, pentane-1,5-diol is also an effective solvent, water-bind...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-005-0610-8
更新日期：2005-12-01 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：:A 2% commercial solution formulation of 5-fluorouracil (5-FU) was significantly better at delivering 5-FU than either a 1% or 5% solution. Among single component suspension formulations the highest transdermal delivery was obtained from the vehicle in which 5-FU was least soluble, isopropyl myristate (IPM), while chan...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00402624
更新日期：1990-01-01 00:00:00
abstract：:Bradykinin has long been postulated to have a major role in physiologic human pain production. We have developed a method to systematically quantify the algogenic response to bradykinin in human skin by the direct application of bradykinin to suction blister bases. After determination of the pain threshold to bradykin...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00371917
更新日期：1992-01-01 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：:Antimicrobial peptides and proteins (AMPs) play important roles in skin immune defense due to their capacity to inhibit growth of microbes. During intrauterine life, the skin immune system has to acquire the prerequisites to protect the newborn from infection in the hostile environment after birth, which includes the ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-013-1340-y
更新日期：2013-08-01 00:00:00
abstract：:A recently described endogenous proteolytic process in pieces of human plantar stratum corneum incubated in vitro has been further studied. This process leads to a decrease in cohesion between the cells that had been facing outwards in vivo. Using two methods, that differed with respect to efficiency, to detach surfac...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00371642
更新日期：1990-01-01 00:00:00
abstract：:Lichen planus (LP) is a chronic inflammatory, T cell-mediated autoimmune skin disease. Innate immunity could explain the interplay between environmental triggers and the autoimmune cascade leading to disease development. Toll-like receptors (TLRs) are important components of the innate immune system, with no previous ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-012-1267-8
更新日期：2013-03-01 00:00:00
abstract：:In this study, a new procedure for the cultivation of dermal vascular endothelial cells from guinea pig ear lobe was established, and specific binding of [3H]mepyramine to the cultured cell membranes was demonstrated. The vascular endothelial cells were successfully isolated from the dermis of guinea pig ear lobes by ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00493469
更新日期：1990-01-01 00:00:00
abstract：:The effect of theophylline, an inhibitor of phosphodiesterase, on tyrosine (Tyr) transport across cell membrane was studied using cultured B-16 mouse melanoma cells. 1.5 mM Theophylline in culture medium increased Tyr uptake velocity in linear fashion up to 36 h, after which it reached a plateau at which the cells sho...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00414014
更新日期：1984-01-01 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
abstract：:Close contacts between mast cells (MC) and nerve fibers have previously been demonstrated in normal and inflamed skin by light and electron microscopy. A key step for any study in MC-nerve interactions in situ is to simultaneously visualize both communication partners, preferably with the option of double labelling th...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030050195
更新日期：1997-04-01 00:00:00
abstract：:Recent studies on eosinophilic fasciitis have lead to this investigation of eosinophilia in progressive systemic sclerosis and localized scleroderma. Eosinophilia (eosinophilic count greater than 300/cmm) was found in ten of 63 progressive systemic sclerosis patients (15.8%) and in two of nine localized scleroderma ca...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00406686
更新日期：1981-01-01 00:00:00
abstract：:Exposure to a dry environment leads to depletion of water from the peripheral stratum corneum layers in a process dependent on the relative humidity (RH) and the intrinsic properties of the tissue. We hypothesized that by modulating the water content of the stratum corneum in the surface layers, RH effects the rate of...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030100257
更新日期：2001-09-01 00:00:00
abstract：:The effect of 12-O-tetradecanoylphorbol-13-acetate (TPA) and epidermal growth factor (EGF) on type-IV-procollagen (basement-membrane collagen) and laminin synthesis, turnover, and secretion was studied in human A431 squamous epidermoid carcinoma cells. Type-IV procollagen and laminin were biochemically and immunologic...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00509237
更新日期：1985-01-01 00:00:00
abstract：:Total osmotic pressure does not differ significantly in suction blister fluid or in serum of healthy persons from blister fluid, suction blister fluid or serum of patients with dermatitis herpetiformis, bullous contact dermatitis and pemphigus vulgaris. The average values reach about 293 mOsmol/kg. This results from d...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:Recently a new thin layer chromatography plate (Whatman LK 6D) became available which is extremely easy to handle and permits highly reproducible qualitative and quantitative analysis. This plate proved to be of great value for the investigation of skin surface lipids. The use of a fatty acid methyl ester as an intern...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00412383
更新日期：1979-07-30 00:00:00
abstract：:The phospholipids of the skin are difficult to quantify because they represent only a small fraction of the skin tissue. In this study, 31P nuclear magnetic resonance, which permits precise profiling of these phospholipids, was used to compare the phospholipids of upper eyelid epidermal and dermal lipid extracts (n = ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030050308
更新日期：1998-06-01 00:00:00
abstract：:The authors report 2 cases of atypical vitiligo in which they observed 1) "cockade-like" lesions resembling those of "trichrome" vitiligo (from the centre to the periphery, achromic area, hypochromic ring, normal or hyperchromic border), 2) numerous linear achromic lesions corresponding to former excoriations (Koebner...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF00455391
更新日期：1978-07-28 00:00:00
abstract：:Using immunoblot and immunofluorescence analysis, we demonstrated the presence and localization of an immunoreactive form of erythrocyte ankyrin in human epidermal keratinocytes. Immunoblot analysis revealed that both human epidermis and cultured epidermal keratinocytes contained ankyrin-like proteins of molecular mas...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF02505038
更新日期：1996-01-01 00:00:00
abstract：:A novel point mutation in a patient with vascular type Ehlers-Danlos syndrome is herein reported. The patient experienced pneumothorax and multiple arterial troubles during the past 10 years. The patient's hand skin was atrophic, and a paper-like atrophic scar was seen. The collagen microfibrils from the patient's ski...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-008-0884-8
更新日期：2008-10-01 00:00:00
abstract：:A low molecular mass cysteine proteinase inhibitor was found and isolated from bovine hoof. Purification of the inhibitor to homogeneity was performed by carboxymethyl-papain-sepharose affinity and DE-52 ion exchange chromatographies. From 15 g of bovine hoof, 0.25 mg of cysteine proteinase inhibitor was isolated. It ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/BF02505240
更新日期：1996-07-01 00:00:00
abstract：:Artificial light at night (LAN) is a pervasive phenomenon in today's society, and the detrimental consequences of LAN exposure are becoming apparent. LAN is associated with the increased incidence of metabolic disorders, cancers, mood alterations, and immune dysfunction in mammals. Consequently, we examined the effect...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-019-01935-8
更新日期：2019-09-01 00:00:00
abstract：:Staphylococcus aureus is a common wound-infecting organism which can interact with cells via the extracellular matrix protein fibronectin (FN). The aim of this study was to determine the effect of the FN-binding protein (FnBP) of S. aureus on the behaviour of a human skin keratinocytes cell line (UP). FN-coated plates...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-004-0515-y
更新日期：2004-11-01 00:00:00
abstract：:Keloid is a fibrotic disease characterized by abnormal accumulation of extracellular matrix (ECM) in the dermis. It is a late spreading skin overgrowth and may be considered a plastic surgeon's nightmare. In nature, curcuminoid is composed of curcumin, demethoxycurcumin (DMC) and bisdemethoxycurcumin (bDMC). Curcumino...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-010-1075-y
更新日期：2010-12-01 00:00:00
abstract：:Photodynamic therapy (PDT) in dermatology has been proven to be a successful noninvasive therapeutic modality for treating skin cancer. To facilitate its clinical introduction, the development of topical photosensitizers is necessary to avoid generalized, cutaneous photosensitivity. Therefore the penetration of synthe...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030050168
更新日期：1997-02-01 00:00:00
abstract：:Human alpha 1(I) and alpha 1(III) procollagen mRNA expression in skin tissue from 15 systemic sclerosis (SSc) patients and from 7 normal control subjects was quantitatively analyzed using in situ hybridization. The grains accumulating in each area, representing procollagen mRNA expression per cell, were counted. To no...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s004030050458
更新日期：1999-11-01 00:00:00
abstract：:The pathogenicity of Mycobacterium ulcerans (Buruli ulcer) is closely associated with the secretion of exotoxin mycolactone. The cytotoxicity of mycolactone has been linked to its apoptogenic activity. We explored if low mycolactone concentrations, which are not able to induce apoptosis, can influence other essential ...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-017-1719-2
更新日期：2017-04-01 00:00:00
abstract：:The pathogenetic mechanisms in vitiligo have not been completely clarified. One of the major hypotheses in the pathogenesis of vitiligo is the oxidative stress hypothesis. The active or stable phase of vitiligo is defined on the basis of the progression or appearance of new lesions in the last 3 months and the absence...
journal_title：Archives of dermatological research
pub_type： 杂志文章
doi：10.1007/s00403-006-0680-2
更新日期：2006-09-01 00:00:00
