Abstract:
:The expression and localization of connexin 43 (Cx43) were investigated in normal human epidermis, pilosebaceous apparatus, basal cell carcinoma, and squamous cell carcinoma by immunofluorescence as well as by immunoelectron microscopy. In the normal epidermis the immunofluorescence was weak in the basal layer, increased in spinous layer and negative in the horny layer. In the sebaceous gland, peripheral lobular cells showed weak cell membrane dotted pattern. Cell membrane and cytoplasmic fluorescence was strong in the central lobular cells. In the lower hair follicle, the cortex, inner and outer root sheath cells showed cell membrane fluorescence. As cortical cells underwent keratinization, they lost Cx43 epitopes. Basal cell carcinoma and squamous cell carcinoma were poorly stained, and eccrine and apocrine glands were unstained. In immunoelectron microscopy, close membrane appositions of typical gap junctions were often observed in the spinous layers of the epidermis and the immunolabeling for Cx43 was seen along the gap junction structures. Circular and long gap junctions often were found in follicular root sheaths and sebaceous glands. Gold particles labeling Cx43 in these gap junctions were found on the gap junctions or localized in the cytoplasm near the gap junction membranes. Basal cell carcinoma and squamous cell carcinoma had a small number of small gap junctions, and gold particles were not only localized to gap junctions but scattered in the cytoplasm. No gap junctions were labeled in eccrine and apocrine glands. These findings confirmed that 1) long, curved or circular membrane appositions found in hair follicle and sebaceous gland are true gap junctions, 2) immature cells such as epidermal basal cells, peripheral germinative cells of sebaceous gland and basal and squamous cell carcinoma cells do not have fully developed gap junctions, and 3) Cx43 or its precursors are present in the cytoplasm as well as on poorly developed gap junctions in these immature cells. Immunofluorescence findings generally corresponded to ultrastructural distribution and structural maturity of gap junctions.
journal_name
J Cutan Patholjournal_title
Journal of cutaneous pathologyauthors
Tada J,Hashimoto Kdoi
10.1111/j.1600-0560.1997.tb01094.xsubject
Has Abstractpub_date
1997-11-01 00:00:00pages
628-35issue
10eissn
0303-6987issn
1600-0560journal_volume
24pub_type
杂志文章abstract:BACKGROUND:Hobnail hemangioma (targetoid hemosiderotic hemangioma) is a small benign vascular tumor of the superficial and mid-dermis. In contrast to its well-characterized histology, it has been unclear whether this tumor arises from blood vessel endothelial cells (BECs) or lymphatic vessel endothelial cells (LECs). ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.0303-6987.2004.00192.x
更新日期:2004-05-01 00:00:00
abstract:BACKGROUND:Melanocytic nevi from the genitalia are uncommon. Nevi on the vulva are much better described than nevi on male genitalia. To our knowledge, a systematic study of preputial melanocytic nevi has not been reported. OBJECTIVE:To investigate the frequency of clinically unapparent melanocytic nevi on a series of...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2008.01070.x
更新日期:2009-04-01 00:00:00
abstract::Until recently the number of patients with syphilis has been diminishing. Although that trend has reversed cases of tertiary syphilis are rare and often difficult to diagnose as a substantial number of patients will have a negative rapid plasma reagin. Histologically, cutaneous lesions in late stage syphilis exist in ...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.12770
更新日期:2016-11-01 00:00:00
abstract::We examined 32 cases (38 lesions) of extramammary Paget's disease (EMPD) in relation to comparative studies on intraductal carcinoma of the breast (ductal carcinoma in situ, DCIS) and apocrine adenocarcinoma (AAC). Lesions included scrotum (18 lesions), vulva (8), axilla (6), groin (3), penis (2) and chest wall (1), a...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1990.tb00099.x
更新日期:1990-10-01 00:00:00
abstract::Since the first demonstration of skin antibodies in sera of pemphigus patients by IF (Beutner & Jordon 1964), the scope of skin diseases in which immunologic findings may be of interest has enormously enlarged and dermatology remains one of the leading clinical specialities applying IHC in both diagnosis and research....
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1983.tb00313.x
更新日期:1983-02-01 00:00:00
abstract::Dirofilaria repens (formerly Dirofilaria conjunctiva) is a natural parasite of the subcutaneous tissues of dogs, cats and wild carnivores in Europe, Africa and Asia. Microfilariae are transmitted to humans by various species of mosquito. An autochthonous case of subcutaneous dirofilariasis is reported in a Greek patie...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2008.01144.x
更新日期:2009-08-01 00:00:00
abstract:BACKGROUND:Nickel can induce cellular and nuclear damages responsible for chronic diseases, like allergic contact dermatitis (ACD). We previously showed that matrix metalloproteinase-2 (MMP-2) gene expression was induced by nickel in nontumorigenic human keratinocytes cell line (HaCat). OBJECTIVE:To investigate the si...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2006.00647.x
更新日期:2007-06-01 00:00:00
abstract:BACKGROUND:Molluscum contagiosum (MC) is a Molluscipox virus infection of keratinocytes with hyperplasia and intracytoplasmic inclusions - the molluscum bodies (MBs). Few papers address cytokeratins (K) profile in MC, mainly focusing terminal keratinization process. METHODS:Forty-one MC lesions were subjected to immun...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2009.01288.x
更新日期:2009-12-01 00:00:00
abstract::Trichilemmoma is considered a benign neoplasm derived from the outer root sheath of the hair follicle. Although the histogenesis of the lesion is unknown, a relationship between human papillomavirus (HPV) infection and development of these tumors has been suggested on morphologic observations. In order to determine wh...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1991.tb00152.x
更新日期:1991-06-01 00:00:00
abstract::Large cell neuroendocrine carcinoma (LCNEC) of the larynx is an aggressive form of neuroendocrine carcinoma that affects smokers at an average age of 60 years. LCNEC is characterized by large cells with round to ovoid nuclei distributed in a trabecular or nested growth pattern. Previously, laryngeal LCNEC and atypical...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13090
更新日期:2018-03-01 00:00:00
abstract::Disseminated bacillus Calmette-Guérin infection (BCGitis) is an uncommon condition which is usually associated with primary immunodeficiency. Skin histopathology findings have been described in rare cases only. A retrospective clinicopathological study was performed to assess the potential utility of skin biopsies in ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12048
更新日期:2013-01-01 00:00:00
abstract:BACKGROUND:Although a range of cytomegalovirus (CMV)-induced cutaneous manifestations is described in AIDS patients, skin involvement in immunocompromised patients is rare, and intraneural CMV inclusions or CMV neuritis has not been documented in skin biopsies. METHODS AND RESULTS:Cutaneous biopsies of CMV lesions wer...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2002.290709.x
更新日期:2002-08-01 00:00:00
abstract:BACKGROUND:Morphea (localized scleroderma) and eosinophilic fasciitis (EF) are rare fibrosing disorders which may present a diagnostic challenge. While histopathologic features are often distinct, in some cases there may be overlap. T-cells contribute to etiopathogenesis of both autoimmune conditions. We sought to dete...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12947
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND:Chronic urticaria is a condition with many inciting factors and often presents a therapeutic challenge to clinicians. In addition to a central role for mast cells, an immune dysregulated state related to cytokine/chemokine alterations is increasingly being recognized. METHODS:Biopsies of chronic urticaria (...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12673
更新日期:2016-04-01 00:00:00
abstract::Nm23 is a gene with a putative metastasis-suppressor function, whose expression is inversely correlated with the metastatic potential of some solid malignancies. Because very few data exist concerning the role of nm23 in skin tumors, we studied the immunohistochemical expression of nm23 gene product in frozen sections...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1997.tb01569.x
更新日期:1997-03-01 00:00:00
abstract::Benign fibrous histiocytoma of the skin or dermatofibroma (DF) has been regarded as a fibrohistiocytic tumor. Whether DF is a neoplastic growth or a reactive process has not been settled. Since a neoplastic process is clonal in nature, clonal analysis of DF was conducted to see if DF is a clonal disease. Fresh specime...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2000.027001036.x
更新日期:2000-01-01 00:00:00
abstract::The histopathologic findings in 331 cases of necrobiosis lipoidica diabeticorum seen during a 50-year period were reviewed. Three cases showing cholesterol cleft formation were found. All 3 cases were associated with severe diabetes mellitus. The differential diagnosis of importance is necrobiotic xanthogranuloma. Com...
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::Perivascular epithelioid cell tumors (PEComas) are a group of lesions sharing the common features of co-expression of melanocytic and myogenic markers, with focal association of the cells with vascular walls. The PEComa group exhibits a wide range of morphologies. A "fibroma-like" variant of PEComa has been recently d...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13647
更新日期:2020-06-01 00:00:00
abstract::High-pressure paint guns deliver paint at approximately 3000 pounds per square inch. At this pressure, paint will penetrate the skin and spread quickly through fascial planes and tendon sheaths. The present case is that of a lesion from the finger of a 35-year-old white male in whom a history was initially unavailable...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.0303-6987.2005.00279.x
更新日期:2005-02-01 00:00:00
abstract::In the last 30 years, there has been a strong interest in vascular proliferations. Pyogenic granuloma was not only renamed lobular capillary hemangioma, but also the conceptual interpretation was also changed from an overgrowth of granulation tissue to a genuine hemangioma (or benign vascular neoplasm). We describe 19...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.13844
更新日期:2021-02-01 00:00:00
abstract:BACKGROUND:Chromoblastomycosis is a chronic, suppurative, granulomatous mycosis usually confined to skin and subcutaneous tissues. The host defense mechanisms in chromoblastomycosis have not been extensively investigated. The purpose of the present study was to determine the distribution and pathways of the fungal anti...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1046/j.0303-6987.2004.0131.x
更新日期:2004-01-01 00:00:00
abstract:INTRODUCTION:The atypical fibroxanthoma (AFX) is considered by most authorities to represent a superficial or minimally invasive variant of malignant fibrous histiocytoma that most often presents as a solitary nodule on the sun-exposed skin of the elderly. Among the rarest variants is the clear cell AFX, a lesion which...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2002.290609.x
更新日期:2002-07-01 00:00:00
abstract::Benign lymphangioendothelioma is a rare locally infiltrative vascular neoplasm, presenting as a slow-growing, asymptomatic, reddish-violaceous plaque. Histopathologically, it is characterized by irregular and thin-walled vascular spaces, lined by a single and discontinuous layer of flat endothelial cells, dissecting d...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2012.01971.x
更新日期:2012-10-01 00:00:00
abstract::Exposure to silver-containing compounds can result in reversible discoloration of the skin, presenting as an irregular brown or black macule, which can have a clinical appearance similar to melanoma. Both the clinical scenario and the histopathology are unique. Silver nitrate darkens with exposure to light, and the ar...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13851
更新日期:2020-12-01 00:00:00
abstract::Endocrine mucin-producing sweat gland carcinoma (EMPSGC) is a rare cutaneous adnexal malignancy with predilection for the eyelids of older adults. It must be distinguished from metastatic adenocarcinomas of extracutaneous origin and from benign adnexal proliferations on partial samples when a solid growth component an...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.13831
更新日期:2021-01-01 00:00:00
abstract::A case study of sinus histiocytosis of Rosai-Dorfman (SH) clinically limited to the skin is presented with immunohistochemical study of the infiltrate, in both paraffin and cryostat sections. Factor XIIIa, a dendrocyte marker, was demonstrated in the cytoplasm of histiocytes. This feature had not been previously repor...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1993.tb01278.x
更新日期:1993-08-01 00:00:00
abstract::Galli-Galli disease (GGD) and Dowling-Degos disease (DDD) are inherited skin diseases with variable progressive course. They are of benign and harmless behaviour but aesthetically annoying. They are subsumed within the group of reticulate pigmented disorders of the skin to which, additionally, Kitamura's and Haber's d...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2008.00995.x
更新日期:2009-01-01 00:00:00
abstract::The majority of findings in relation to warts have been passed on from one textbook to the other since the end of the last century. More recent studies have been carried out with the electron microscope. But information is lacking as to histology, histochemistry, examination with the phase-contrast microscope, with th...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1978.tb00938.x
更新日期:1978-04-01 00:00:00
abstract::A 57-year-old woman with cutaneous mastocytosis of 23 years duration developed a hyperpigmented abdominal plaque composed of confluent indurated papules that enlarged for a period of 1 year to 12 x 8 cm. Biopsy showed dermal infiltration by closely packed spindle-shaped mast cells, fibroblasts, collagen, and scattered...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1992.tb01354.x
更新日期:1992-04-01 00:00:00
abstract:BACKGROUND:Chronic amastigote-negative cutaneous leishmaniasis (CL) is a diagnostic challenge, as the parasite load may be low, or absent in biopsy tissue sections. METHODS:A series of consecutive biopsy specimens, taken from 130 patients with a diagnosis of granulomatous dermatitis of unknown etiology, were reviewed....
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12927
更新日期:2017-06-01 00:00:00