Abstract:
BACKGROUND:Nerve growth factor (NGF) and its high-affinity receptor, tyrosine kinase A (TrkA), are members of the neurotrophin family. NGF-TrkA are involved in murine hair morphogenesis and cycling. To date, their expression in human hair follicle (HF) is unknown. In this investigation, we hypothesize that NGF-TrkA proteins are expressed in the human scalp skin. Moreover, NGF-TrkA expression in HF changes with the transitions from anagen-->catagen-->telogen stages. MATERIALS AND METHODS:To test our hypothesis and to fill this existing gap in literature, the immunostaining values (semiquantitative evaluation of protein expression: SI, staining intensity; PP, percentage of positive cells; and IR score, immunoreactivity score) of NGF and TrkA proteins were examined in human scalp skin by immunofluorescent and immunoperoxidase staining methods. Fifty normal human scalp skin biopsy specimens were examined (healthy females, 53-57 years). In each case, 50 HFs were analyzed (35, 10, and five follicles in anagen, catagen, and telogen, respectively). RESULTS:The IR scores were statistically significantly higher (p < 0.001) in anagen as compared with either catagen or telogen HF (9.61 +/- 0.12 vs. 1.4 +/- 0.10 vs. 0.6 +/- 0.10 for NGF and 3.31 +/- 0.02 vs. 0.5 +/- 0.10 vs. 0.2 +/- 0.10 for TrkA). In the anagen HF, high expression values were seen in the distal region, followed by upper distal, lower distal, and bulb regions for both NGF (10.6 +/- 0.21 vs. 10.3 +/- 0.21 vs. 9.2 +/- 0.40 vs. 8.1 +/- 0.30) and TrkA (3.54 +/- 0.07 vs. 3.45 +/- 0.07 vs. 3.31 +/- 0.06 vs. 3.13 +/- 0.04). Both NGF and TrkA proteins showed prominent expression in the melanocytes (7.6 +/- 0.15 vs. 2.50 +/- 0.07), keratinocytes (10.2 +/- 0.40 vs. 2.71 +/- 0.06), sebaceous glands (10.2 +/- 0.40 vs. 2.72 +/- 0.06), and sweat glands (10.4 +/- 0.40 vs. 2.84 +/- 0.05). CONCLUSIONS:Our findings report, for the first time, the expression pattern of NGF and TrkA proteins in human scalp skin and HF. The differential expression of these proteins during HF cycling suggests their possible roles in human HF biology. The clinical ramifications of these observations mandate further investigations.
journal_name
J Cutan Patholjournal_title
Journal of cutaneous pathologyauthors
Adly MA,Assaf HA,Nada EA,Soliman M,Hussein Mdoi
10.1111/j.1600-0560.2006.00443.xsubject
Has Abstractpub_date
2006-08-01 00:00:00pages
559-68issue
8eissn
0303-6987issn
1600-0560pii
CUP443journal_volume
33pub_type
杂志文章abstract::Cell adhesion between surfaces of cells and to extracellular matrices represents a fundamental mechanism in tissue organization and influences the biological behaviour and the architecture of tumors. We investigated the expression of various adhesion molecules in normal skin (n=5), nevi (n=29), and malignant melanoma ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1997.tb00792.x
更新日期:1997-05-01 00:00:00
abstract::A 27-year-old woman developed many nodular lesions, ranging in diameter from 3 mm to 15 mm and clinically indistinguishable from dermatofibromas. Light microscopic examination showed large amounts of mucin, fibroblasts and histiocytes throughout the dermis. Electron microscopic study revealed wide electron lucent area...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1980.tb01206.x
更新日期:1980-12-01 00:00:00
abstract:BACKGROUND:Ulceration and osteoclast-like giant cells are two pathological features uncommonly seen in dermatofibromas. To our knowledge, the presence of these features has not been previously described within the same lesion. METHODS:We report the clinical, histopathological and immunohistochemical findings of a 38-y...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2009.01195.x
更新日期:2009-10-01 00:00:00
abstract::Calciphylaxis is a rare syndrome of vascular calcification with thrombosis that occurs most often in patients with end-stage renal disease, and it frequently portends a guarded prognosis. Rarely, nonuremic calciphylaxis (NUC) may occur; in this context, a strongly supportive histology is crucial in establishing the di...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13034
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Histopathology is often essential to establish an accurate diagnosis. Pathology laboratories are scarce in most Sub-Saharan Africa where dermatopathology is a developing field. In resource-poor countries, most specimens are analyzed only after hematoxylin and eosin staining. The availability of special stain...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12641
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND:The Wnt-signaling pathway, involving beta-catenin, apc, and axin, plays a critical role in numerous developmental events. Alterations in the Wnt-signaling pathway have been detected in a wide variety of neoplasms. However, similar aberrations have not been described in Merkel cell carcinoma (MCC). The aim of...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2006.00577.x
更新日期:2007-01-01 00:00:00
abstract::Two cases of fibrous papule of the nose (FPN) with granular cell features are presented and discussed. Both lesions have classic architectural features of FPN; however, the main stromal cells show large cytoplasmic granules of the type seen in granular cells. We are uncertain of the significance of these findings. Our...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1991.tb01237.x
更新日期:1991-08-01 00:00:00
abstract::We describe the case of a cutaneous symplastic leiomyoma in a 37-year-old woman who presented with a 4-year history of a painful slow growing lesion on the left upper arm. The lesion was excised and subjected to histological examination. A poorly circumscribed lesion was seen in the dermis composed of spindle shaped c...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2007.00803.x
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:It is often challenging to reliably assess the number of lesional melanocytes in intraepidermal melanocytic proliferations involving sun-damaged skin. Therefore, dermatopathologists routinely use immunostains to help differentiate melanocytes from surrounding keratinocytes. METHODS:Forty-three cases of sola...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2011.01763.x
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND:Apoptosis is important for maintenance of tissue homeostasis and often dysregulated in cutaneous neoplasms. The apoptosis inhibitor survivin is expressed in melanoma and non-melanoma skin cancers and benign keratinocytic lesions. Its expression has not been studied in melanocytic nevi. OBJECTIVE:We determin...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.0303-6987.2005.00242.x
更新日期:2005-01-01 00:00:00
abstract::The authors have observed 15 examples of a distinctive fibrohistiocytic lesion in children and adolescents which they chose to designate as "atypical fibrous histiocytoma" (AFH). Patient ages ranged from 1 to 19 years (mean 9.3 yr.). Only two cases were encountered in the first year of life, but 7 were seen in childre...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1992.tb01362.x
更新日期:1992-08-01 00:00:00
abstract::Polarizable calcium oxalate (CaOx) crystals have been well documented in breast biopsies, generally associated with benign apocrine metaplasia. In contrast, polarizable crystals are only rarely reported in skin adnexal neoplasms. We report 3 different cases of sweat gland tumors with polarizable crystals morphological...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.12962
更新日期:2017-08-01 00:00:00
abstract::Traditionally, the pigmented purpuric eruptions (PPE) have been subdivided into four histologic categories, based upon variations in histologic pattern and clinical morphologies. In recent years, it has become apparent that the lesions behave similarly, and this family of eruptions has become grouped under the term PP...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1991.tb01378.x
更新日期:1991-12-01 00:00:00
abstract::Traditionally, melanoma has been considered by surgeons to be a highly lethal malignancy, always requiring a radical surgical approach for optimal chance of cure. Yet melanoma patients who are now being referred for treatment frequently have small early lesions, and surgeons should develop a flexible attitude about ma...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1979.tb01127.x
更新日期:1979-06-01 00:00:00
abstract:BACKGROUND:Mucocutaneous depositions of various metals such as silver, lead, gold, arsenic, mercury, iron, and bismuth have been previously published. Heavy metal deposition typically occurs in the setting of either prolonged topical application to intact skin, topical application to eroded or ulcerated skin, as a resu...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2002.291008.x
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Elastophagocytosis, or elastic fiber phagocytosis by multinucleate macrophages, has been observed in different skin conditions that may or may not occur on sun-exposed skin. Although loss of elastic fibers has been well documented in the homogenized papillary dermal zone in lichen sclerosus (LS), elastophago...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2010.01575.x
更新日期:2010-10-01 00:00:00
abstract::Langerhans' cell histiocytosis (LCH) may be associated with a wide range of neoplastic disorders. However, the combination of a LCH and a basal cell carcinoma (BCC) of the skin still represents a highly unusual condition. In this publication, we report the case of a 48-year-old woman who developed a localized LCH invo...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1034/j.1600-0560.2000.027009476.x
更新日期:2000-10-01 00:00:00
abstract::The nuclei of spindle and epithelioid cell nevus (SECN) cells often contain inclusions. To determine the origin and pathogenesis of the nuclear inclusions, 12 cases of SECN were electron microscopically examined. True inclusions, pseudoinclusions, and electron-lucent areas were frequently found in the nuclei of SECN c...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.1990.tb00061.x
更新日期:1990-04-01 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: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:BACKGROUND:Primary cutaneous apocrine cribriform carcinoma (PCACC) is a rare tumor, clinically appearing as a solitary nodule, mostly involving extremities of females and this lesion usually raises a differential diagnosis with metastatic cribriform carcinomas, especially breast cancer. OBJECTIVE:To study GATA3 expres...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.13124
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:During a clinical trial, we obtained 16 biopsies of skin eruptions induced by aspirin in patients with chronic idiopathic urticaria (CIU). In this setting, aspirin triggers skin eruptions through a well-established non-immunological mechanism involving the inhibition of cyclooxygenase type I. This presented ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.0303-6987.2004.0195.x
更新日期:2004-04-01 00:00:00
abstract::Immunotherapies targeting cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) and the programmed cell death 1 (PD-1) receptor and its ligand (PD-L1) have showed significant therapeutic benefit in patients with clinically advanced solid malignancies, including melanoma. However, immune-related adverse events (irAE) ar...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13150
更新日期:2018-07-01 00:00:00
abstract::Patients with primary immunodeficiency are at increased risk for malignancy, especially hematologic neoplasms. This paper reports a unique case of a 47-year-old man with X-linked agammaglobulinemia who presented with progressive asymptomatic violaceous papules and plaques on his face, hands, and trunk for 1 year. Skin...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13860
更新日期:2020-09-03 00:00:00
abstract:BACKGROUND:Merkel cell carcinoma (MCC) is an aggressive neoplasm, which is often associated with Merkel cell polyomavirus (MCPyV). Programmed death-1 (PD-1) and its ligand PD-L1 are key players of the tumor microenvironment (TME). METHODS:Fourteen paraffin-embedded tissue samples of MCC were stratified by their MCPyV ...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/cup.12973
更新日期:2017-09-01 00:00:00
abstract::We present a challenging case of chronic, erosive, scarring dermatosis of the vulva with clinical features of long standing lichen sclerosus (LS), namely pallor and loss of vulval architecture, but with histopathology consistently showing features of an acantholytic process. The history and clinical features of this c...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13560
更新日期:2020-01-01 00:00:00
abstract::Oral mucosal melanoma (OMM) is an extremely rare malignancy, accounting for < 0.5% of all melanomas and all oral malignancies. The rarity of OMM, the heterogeneity in clinical and histopathologic appearances, and the paucity of molecular and genetic studies to date have limited our knowledge of the etiopathogenesis of...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2007.00830.x
更新日期:2008-04-01 00:00:00
abstract::Immunotherapies targeting cytotoxic T-lymphocyte-associated antigen 4 (CTLA-4) and the programmed cell death 1 (PD-1) receptor and its ligand (PD-L1) have showed substantial therapeutic benefit in patients with clinically advanced solid malignancies. However, autoimmune toxicities are common and often significant adve...
journal_title:Journal of cutaneous pathology
pub_type:
doi:10.1111/cup.13044
更新日期:2017-12-01 00:00:00
abstract::We report a rare case of multiple, co-exisitng verruciform xanthomas (VXs) of the anogenital region in the setting of cutaneous trauma. VX is a rare benign mucocutaneous neoplasm that typically presents as a solitary lesion with a predilection for the oral cavity, although extra-oral lesions have been reported involvi...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章
doi:10.1111/j.1600-0560.2009.01470.x
更新日期:2010-08-01 00:00:00
abstract::A 4-year-old boy presented with a 6-month history of a red papule on the nasal septum. Physical examination was otherwise unremarkable. A biopsy specimen showed an epithelioid sarcoma characterized by nodular collections of epithelioid tumor cells with central, tumor cell necrosis. By immunohistochemistry the tumor ce...
journal_title:Journal of cutaneous pathology
pub_type: 杂志文章,评审
doi:10.1034/j.1600-0560.2000.027004186.x
更新日期:2000-04-01 00:00:00