Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027960 (mole)
 21,279 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The physical, chemical and immunochemical properties of carcinoembryonic antigen (CEA) purified from hepatic metastases of eight tumours, originating in the colon (6), stomach (1) and lung (1), have been examined. Differences were observed in the overall molecular charge, and also in the carbohydrate composition of the different preparations (both total % carbohydrate, and mole % of the individual sugars). Negligible differences in amino acid composition were found. Gel filtration analysis of these CEA preparations and an additional four partially purified preparations (from pancreatic, hepatic, breast and oesophageal tumour tissues) revealed a single CEA-active peak of similar molecular weight (about 200,000-300,000 daltons) in all preparations. Radioimmunoassay data for the twelve CEA preparations indicated that all preparations contain the same antigenic determinants, as detected by our antiserum, but that there are differences in the expression of these determinants in different preparations.
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PMID:Physicochemical and immunochemical properties of carcinoembryonic antigen (CEA) from different tumour sources. 8 70

The pure apocrine nevus is a rare tumor. A new case of pure apocrine nevi of the bilateral axillary regions in a 48-year-old man is herein reported. The patient had two soft masses of both axillae. The time of onset of the masses was unknown. They were not accompanied by problems of sweating. Histologically, these lesions comprised numerous apocrine glands extending from the reticular layer of the dermis to the subcutaneous tissue. In addition, sections from both of the lesions were stained by immunoperoxidase techniques for the presence of epithelial membrane antigen, carcinoembryonic antigen, and the alpha and beta subunits of S100 protein. Immunohistochemical features of the tumor stained by these antibodies are consistent with a pure proliferation of mature, well-differentiated apocrine glands. The tumor of the present case seems to have developed spontaneously. It is believed, therefore, that the tumor seen in this patient is best categorized as a pure apocrine nevus.
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PMID:Pure apocrine nevus. A study of light-microscopic and immunohistochemical features of a rare tumor. 200 51

A case of an adenomatous sweat gland hamartoma present since birth is described. The histological and ultrastructural findings were similar to those of spiradenoma, and carcinoembryonic antigen, usually present in cutaneous sweat gland tumors, was also demonstrated. Sweat gland nevi are rare, and a spiradenomatous variant has not been previously documented.
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PMID:Congenital spiradenoma. 285 Dec 73

The reactivity of 12 surgically removed uveal melanoma lesions with monoclonal antibodies (MoAb) to 14 membrane-bound and 2 cytoplasmic cutaneous melanoma-associated antigens (MAA), to the 2 subunits of HLA Class I antigens and to the gene products of the HLA-D region was compared with that of cutaneous melanoma lesions and correlated with their histiotype. The membrane-bound determinants defined by the anti-Mr 92,000 and 45,000 MAA MoAb TP39.1, anti-Mr 110,000 MAA MoAb M111, anti-Mr 118,000 MAA MoAb TP36.1, anti-Mr 115,000 MAA MoAb 345.134, anti-ICAM-1 MoAb CL203.4 and anti-Mr 31,000 MAA MoAb M2590, and the cytoplasmic determinants defined by the anti-MAA MoAb 465.12 and 2G-10 display a distribution in uveal melanoma lesions similar to that in cutaneous melanoma lesions. On the other hand, membrane-bound determinants defined by the anti-Mr 100,000 MAA MoAb 376.96, anti-9-O-acetyl-GD3 ganglioside MoAb ME311 and anti-GD2-GD3 ganglioside MoAb ME361 were not detected in the uveal melanoma lesions tested. Furthermore, the membrane-bound determinants defined by the anti-GD3 MoAb R24, anti-nerve growth factor receptor MoAb ME20.4, anti-Mr 97,000 MAA MoAb 140.240, anti-carcinoembryonic antigen MoAb B1.1 and anti-HMW-MAA 149.53, 225.28, and 763.74 have a markedly lower expression in uveal than in cutaneous melanoma lesions. Incubation of uveal melanoma lesions with the pool of the MoAb 149.53, 225.28, and 763.74 recognizing distinct and spatially distant determinants of the HMW-MAA increased the intensity of staining of six lesions and stained four lesions which were not stained by the individual monoclonal antibodies. The distribution of HLA Class I antigens in uveal melanoma lesions resembles that in cutaneous melanoma lesions, since they are expressed in all the lesions of the mixed and epithelioid type but were not detected in those of the spindle type, i.e., the counterparts of nevocellular nevi. HLA Class II antigens are expressed with a lower frequency in uveal than in cutaneous melanoma lesions, since they were detected only in 2 of the 12 lesions. One of them is of the mixed type and the other one of the epithelioid type. Besides HLA antigens the determinants defined by the anti-carcinoembryonic MoAb B1.1, anti-ICAM-1 MoAb CL203.4, and anti-GD3 MoAb R24 displayed a differential distribution in the different histiotypes of uveal melanoma, since they are preferentially expressed in lesions of the mixed and epithelioid type.
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PMID:Analysis of the antigenic profile of uveal melanoma lesions with anti-cutaneous melanoma-associated antigen and anti-HLA monoclonal antibodies. 291 56

The apocrine nevus is a rare tumor. We report a 32-year-old man with a neck nodule, histologically an apocrine nevus displaying mature and immature apocrine structures in a distinctive pattern. The carcinoembryonic antigen staining was positive intracellularly only in the smaller luminal structures. We have named this unique tumor a polymorphic apocrine nevus.
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PMID:The polymorphic apocrine nevus: a study of a unique tumor including carcinoembryonic antigen staining. 673 68

Eccrine angiomatous hamartoma (nevus) is a rare form of congenital tumorous malformation with proliferation of eccrine secretory coils and ducts, surrounding capillary angiomatous channels and occasionally other minor elements. To date, there have been only about 24 cases reported in the literature. We report an additional case with more detailed description of the microscopic findings, including immunohistochemical observations. The patient was a 28-year-old female who presented with painless, flesh- to reddish brown-colored, violaceous or bluish subcutaneous nodules on the extremities and trunk. The tumors did not show sweating following exertion. The histologic features were comparable to the previously reported cases. The hamartomatous eccrine sweat glands and ducts and a few apocrine glands demonstrated qualitatively diminished antigens commonly found in the eccrine sweat apparatuses, such as carcinoembryonic antigen (CEA) and S-100 protein. The findings of CD34, CD44, human nerve growth factor receptor and Ulex europaeus antigens have not been previously reported. The histologic features suggested a "hamartomatous" growth rather than a true neoplastic process.
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PMID:Eccrine angiomatous hamartoma (nevus): immunohistochemical findings and review of the literature. 751 19

A 33-year-old Japanese woman presented with a black papule on a pigmented lesion which had been on her right thigh since her early childhood. A hematoxylin-eosin-stained section revealed a sharply demarcated, acanthotic epidermis composed of enlarged clear cells, which stained positively for epithelial membrane antigen and negatively for carcinoembryonic antigen. With antikeratin antibodies, the tumor cells stained for AE1 and AE3, but did not stain for CAM5.2. They contained abundant glycogen. Histologically, we diagnosed the case as a clear cell acanthoma which developed in the pre-existing epidermal nevus. This is the second such case in the literature.
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PMID:Clear cell acanthoma developing in epidermal nevus. 935 Jan 8

The term Spitz's nevus refers to a large spectrum of nevi composed of spindle and/or epithelioid cells. We report on a hitherto undescribed tubular variant of a dermal epithelioid nevus, characterized by aggregates composed exclusively of cuboidal cells with the prominent feature of tubular or microcystic structures. Immunohistochemically, the epithelioid cells expressed melanocytic markers (S-100, NKI/C3) lacking markers for cytokeratin or carcinoembryonic antigen. The three-dimensional analysis of the lesions by confocal laser scanning microscopy revealed the structural configuration of tubular or microcystic empty spaces bordered by cuboidal nevus cells. This rare variant of epithelioid nevus is another example for the remarkable diversity of Spitz's nevi.
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PMID:'Tubular' epithelioid cell nevus: a new variant of Spitz's nevus. 1047 62

Inclusions of benign tissues in lymph nodes are most often aberrant glandular tissue, including endosalpingiosis, the thyroid, parotid, breast, and pancreas. Nonglandular inclusions are rare and include nevus cells and decidua. Mesothelial cells in lymph nodes are exceedingly rare; only eight cases have been reported in mediastinal lymph nodes and three cases in abdominal lymph nodes. The incidence of benign mesothelial cells in mediastinal lymph nodes in patients with a history of pericarditis or pleuritis is reported in this study. A retrospective search showed eight cases with removal of mediastinal lymph nodes in the absence of neoplasm. Hematoxylin and eosin-stained sections were examined in all cases. Immunohistochemical stains for CAM 5.2 were performed in all cases, and stains for AE1/AE3, Ber-EP4, carcinoembryonic antigen, Leu-M1, B72.3, and S-100 were performed in one case. CAM 5.2-positive cells with features of mesothelial cells were present in five of eight cases. In all cases, the cells were present in nodal sinuses and appeared as single cells or small clusters. The cells were missed on routine hematoxylin and eosin sections in all cases but one, in which they were numerous and mimicked metastatic carcinoma. Malignancy was not found in any of the cases preoperatively, at the time of surgery, or during the follow-up period. Benign mesothelial cells may embolize to regional lymph nodes in pleuritis or pericarditis. In most cases, these cells are few and undetectable on routine sections. Rarely, hyperplastic mesothelial cells may be present and must be distinguished from metastatic carcinoma, mesothelioma, and melanoma.
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PMID:Benign mesothelial cells in mediastinal lymph nodes. 1052 28

Receptor-binding cancer antigen expressed on SiSo cells (RCAS1), which is a type II membrane protein expressed on cervical carcinoma cells, induces apoptosis in RCAS1 receptor expressing cells. RCAS1 is thus presumed to protect tumor cells from immune surveillance by infiltrating RCAS1 receptor-positive immunocytes (Sonoda et al. Int J Oncol 1995; 6: 1899-1904; Nakashima et al. Nature Med 1999; 5: 938-942). We performed immunohistochemical analysis of RCAS1 expression in various skin tumors. RCAS1 was not detected in normal human epidermis. One of 21 seborrheic keratosis (4.8%), one of 12 actinic keratosis (8.3%), two of 16 keratoacanthomas (12.5%), and two of 14 basal cell carcinomas (14.2%) expressed RCAS1. RCAS1 was not detected in Bowen's disease (0/17). RCAS1 was positive in 45 of 61 (73.8%) squamous cell carcinomas. Interestingly, the expression of RCAS1 was mostly correlated with clinical stages of squamous cell carcinoma. It was found that 46.1% of stage I, 61.1% of stage II, 85.7% of stage III, and 83.3% of stage IV squamous cell carcinomas were RCAS1-positive. In addition, RCAS1 was found to be highly expressed in extramammary Paget's disease. Fifty nine of 63 extramammary Paget's disease samples (93.7%) were positive for RCAS1. Fifty eight (92%) showed co-expression of RCAS1 and carcinoembryonic antigen (CEA). While two of 24 cases of melanoma (8.3%) expressed RCAS1 antigen, none of 20 cases of nevus pigmentosus showed positive staining. These results indicate that RCAS1 is a highly sensitive marker for extramammary Paget's disease. RCAS1 is also expressed in various skin tumors including squamous cell carcinoma, where positive correlation with clinical staging was documented.
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PMID:RCAS1 antigen is highly expressed in extramammary Paget's disease and in advanced stage squamous cell carcinoma of the skin. 1137 31


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