Abstract:
BACKGROUND:Considerable controversy has surrounded the question of possible biological responses to electromagnetic fields (EMFs) generated from visual display terminals (VDTs), such as personal computers (PCs) and ordinary television sets (TVs). The cellular and molecular mechanisms for such potential harmful health hazards have not yet been understood, although clues from the literature include mast cells and histamine. The aim of this study was therefore to investigate possible biological mast cell responses to TV/PC screens. METHODS:Using the indirect immunofluorescence technique, we studied the presence of histamine-containing mast cells in the dermis of healthy volunteers. Cutaneous biopsies taken before and after exposure to ordinary TV/PC screens for 2 or 4 h were investigated in 13 healthy subjects. RESULTS:Our present in vivo study indicates that normal cutaneous mast cells could be altered by exposure from ordinary TV/PC screens. To our great surprise, we found the number of mast cells in the papillary and reticular dermis to increase, to varying degrees, in 5 out the 13 subjects after such an exposure. A migration of mast cells towards the uppermost dermis appeared as the most important event. Thus, the normally upper "empty zone" of the dermis disappeared, and instead, a higher density of mast cells were found in this zone. These cells also seemed to have a tendency to increase in number towards the epidermal-dermal junctional zone and some of them lost their granular content and the cytoplasm shrunk (=degranulation). These findings could only be seen in the exposed skin. Two of the 13 cases instead showed a decrease in mast cell number, but the shift in mast cells towards the upper dermis was still visible. Twenty-four h after the provocation, the cellular number and location were normalized in all subjects. CONCLUSIONS:By definition, normal healthy volunteers are assumed not to react to a TV/PC screen provocation. To our great surprise, this proved not to be true. The present results might lay a foundation to understand the underlying cause of so-called "screen dermatitis" with special reference to mast cells. However, blind or double-blind experiments using patients ought to be further investigated in order to find out the exact cause for the observed changes. Such causes include the effects of surrounding airborne chemicals, stress factors, etc.
journal_name
J Cutan Patholjournal_title
Journal of cutaneous pathologyauthors
Johansson O,Gangi S,Liang Y,Yoshimura K,Jing C,Liu PYdoi
10.1034/j.1600-0560.2001.281004.xkeywords:
subject
Has Abstractpub_date
2001-11-01 00:00:00pages
513-9issue
10eissn
0303-6987issn
1600-0560pii
281004journal_volume
28pub_type
杂志文章abstract::Oral melanoacanthoma is a rarely-reported, benign pigmented lesion of oral mucosa. Spongiosis was only recently mentioned as a light-microscopical finding occasionally seen in oral melanoacanthoma, and the formation of spongiotic intraepithelial vesicles to our knowledge has never been reported. The authors discuss a ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1989.tb00587.x
更新日期:1989-12-01 00:00:00
abstract::Melanoma ex blue nevus (MEBN) is a rare, aggressive, and potentially lethal neoplasm. Distinguishing MEBN from an atypical cellular blue nevus can be very challenging. We report a diagnostically difficult case of MEBN with lymph node metastases, in which single nucleotide polymorphism array and fluorescence in situ hy...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13400
更新日期:2019-03-01 00:00:00
abstract::As many as 40% of all primary cutaneous melanomas can have histologic remnants of nevomelanocytic nevi adjacent to the tumor. There is increasing evidence that dysplastic nevi are at least a clinical marker for melanoma risk. Spitz nevi are not known for such an association, but are noteworthy because of their histolo...
journal_title:Journal of cutaneous pathology
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doi:10.1111/j.1600-0560.1990.tb00110.x
更新日期:1990-12-01 00:00:00
abstract:BACKGROUND:Even though only 33 cases of Erythromelanosis follicularis faciei et colli (EFFC) have been reported around the world, there have been no quantitative clinicopathological studies yet. The purpose of this study is to examine quantitatively clinical and histopathological evaluations of EFFC using image analysi...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2001.028003160.x
更新日期:2001-03-01 00:00:00
abstract::Breast implant-associated anaplastic large cell lymphoma (ALCL) is a newly described clinical and pathologic entity that typically presents as seroma in the fibrous scar around the implant. Less frequently, it presents as a solid peri-implant mass, and there have been no reports to date of cutaneous lesions as the pre...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.12697
更新日期:2016-07-01 00:00:00
abstract::Deep wrinkles of 6 elderly people were investigated using electron microscopy. There were ultrastructural differences in the elastotic changes between the area of the wrinkle and the surrounding areas. Elastic fibers containing electron-dense inclusions were mostly seen in the upper dermis of the wrinkled area and wer...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1987.tb00491.x
更新日期:1987-06-01 00:00:00
abstract:BACKGROUND:Psoriasis vulgaris is a common chronic inflammatory dermatosis. Disorders in keratinocyte proliferation, differentiation, inflammation and immune dysregulation are the major factors implicated in the pathogenesis of psoriasis vulgaris. METHODS:The study was performed in skin specimens of 25 patients with ps...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2006.00719.x
更新日期:2007-03-01 00:00:00
abstract::The diagnosis of a CD30+ cutaneous infiltrate is often difficult and requires clinicopathologic correlation. To further evaluate this challenge, initial clinical and histopathologic diagnoses were correlated with final clinicopathologic diagnosis in 44 cases with CD30 immunopositivity. Dermatopathologic evaluation con...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12510
更新日期:2015-07-01 00:00:00
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journal_title:Journal of cutaneous pathology
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doi:10.1034/j.1600-0560.2002.290609.x
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abstract::Agminated, or grouped Spitz nevi are a curious expression of nevomelanocytic growth; and represent an uncommon manifestation of these nevi. We encountered an example of agminated Spitz nevi present at birth, which showed progression and rapid growth over months. All showed histologic Spitz nevus features. Avidin-bioti...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
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abstract::We encountered a patient who complained of many small papules on the neck, shoulders, upper chest and upper back. Biopsy specimens showed complete loss of elastic fibers in the upper dermis including papillary dermis, whereas those of the mid dermis were intact. Electron microscopy revealed that assembly of component ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1994.tb00724.x
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abstract::Factor XIIIa (FXIIIa), a blood and intracellularly produced coagulation factor, has been found in a variety of cell types including fibroblast-like mesenchymal cells, and has been shown to stimulate the proliferation of fibroblasts and some neoplastic cells in vitro. We have already shown that the dendritic fibroblast...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1989.tb00050.x
更新日期:1989-10-01 00:00:00
abstract::Mycosis fungoides (MF) is a rare type of non-Hodgkin's lymphoma affecting the skin. Because MF develops slowly over several years and may have a variety of clinical presentations, including itchy patches, plaques or tumors that may be confused with common benign conditions such as eczema and psoriasis, the disease pre...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章,评审
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abstract::Melanoma is known to show considerable variation in its histopathological presentation. In exceptional cases, heterologous or divergent differentiation (metaplastic melanoma) can be observed. We report a case of a 69-year-old man who was diagnosed with nodular melanoma on the right upper leg. One year later, the patie...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13857
更新日期:2020-12-01 00:00:00
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journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1998.tb01698.x
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journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1999.tb01854.x
更新日期:1999-08-01 00:00:00
abstract:BACKGROUND:Silver dressings have been widely and successfully used to prevent cutaneous wounds, including burns, chronic ulcers, dermatitis and other cutaneous conditions, from infection. However, in a few cases, skin discolouration or argyria-like appearances have been reported. This study investigated the level of si...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2008.01141.x
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abstract::Herpetic syringitis has been described as a rare manifestation of herpes virus infection in patients with an immunodeficiency, usually secondary to human immunodeficiency virus (HIV) infection. Eccrine squamous syringometaplasia (ESS) is an infrequent alteration of the eccrine duct epithelium reported in association w...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
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journal_title:Journal of cutaneous pathology
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journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1988.tb00509.x
更新日期:1988-02-01 00:00:00
abstract::Post-vaccinial non-viral folliculitis has been recognized in the past decade as a new adverse cutaneous reaction to smallpox vaccination. Contrary to more serious smallpox vaccine reactions, post-vaccinial non-viral folliculitis has a benign course and resolves spontaneously within approximately 7 days. We describe ad...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
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更新日期:2013-03-01 00:00:00
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journal_title:Journal of cutaneous pathology
pub_type:
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更新日期:2018-12-01 00:00:00
abstract::Another histological variant of basal cell carcinoma (BCC) is described. This clear-cell variant appeared as a recurrent lesion on the back of an elderly man. Histological examination revealed that part of the tumor was composed of clear cells with faintly eosinophilic cytoplasm. Degenerative changes were present, alo...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1988.tb00574.x
更新日期:1988-12-01 00:00:00
abstract::Histologic, immunologic and electron microscopic studies were performed in a patient with transient acantholytic dermatosis which involved oral mucosa. Hitologic and electron microscopic findings were almost identical in both cutaneous and mucous membrane lesions, and these were similar to pemphigus vulgaris; suprabas...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
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更新日期:1978-02-01 00:00:00
abstract:BACKGROUND:Bullous pemphigoid (BP) is the most common type of subepidermal bullous disease. Direct immunofluorescence (DIF) is the gold standard for diagnosis, but it requires a fresh tissue specimen. This study was conducted to evaluate the accuracy of using immunohistochemical (IHC) analysis for the detection of C4d ...
journal_title:Journal of cutaneous pathology
pub_type: 临床试验,杂志文章
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更新日期:2019-10-01 00:00:00
abstract:BACKGROUND:Trichilemmal (pilar) cysts are common skin lesions that usually occur on the scalp of elderly women. They differentiate towards the follicular outer root sheath epithelium and show trichilemmal keratinization. Proliferating trichilemmal tumor (PTT) shows features of typical pilar cyst, but additionally shows...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2003.00041.x
更新日期:2003-09-01 00:00:00
abstract::Apoptosis is a process found in many tissues by which devitalized cells are eliminated in an orderly manner. In skin, apoptosis occurs following sunburn, in Bowen's disease and in basal cell carcinoma. Scattered cells are observed in which the cytoplasm has become condensed and dyskeratotic. These dyskeratotic cells a...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
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更新日期:1975-01-01 00:00:00