Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P20020 (adenosine triphosphatase)
 3,299 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The presence of autoimmune gastritis was investigated in 54 women with postpartum thyroiditis. Parietal cell antibodies (PCA) specific against H+, K(+)-adenosine triphosphatase (EC 3.6.1.36) were found in 18 women during pregnancy; in 10 of them, a 2-9-fold increase in the PCA level was observed in the postpartum period. At a 5-year follow-up, the initially PCA-positive women still had elevated antibody levels. Hypergastrinemia and low pepsinogen levels were noted in 4 women. In 2 of these women low serum vitamin B12 levels had developed. In 6 of 9 PCA-positive women examined by gastroscopy, biopsy specimens from the gastric body mucosa contained mononuclear cells, mainly T lymphocytes (CD3+) and macrophages (Leu-M3+) combined with an aberrant epithelial expression of HLA-DR. In four patients with chronic gastritis, all parietal cells, as defined by a specific monoclonal antibody, were found to have immunoglobulin G (IgG) deposits by a double-immunostaining method. Three of them had microscopic evidence of atrophy, whereas in 1 patient the body mucosa was intact. In 1 further patient with intact glands at histological examination, the basolateral membrane of some oxyntic glands was coated with IgG. The selective in situ deposition of antibodies associated with histologically intact parietal cells may support the concept that specific autoantibodies participate in the early pathogenesis of parietal cell destruction.
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PMID:A study of autoimmune gastritis in the postpartum period and at a 5-year follow-up. 132

A 54-year-old man was admitted because of right supraclavicular lymphadenopathy of some weeks duration. Computed axial tomography revealed a large multinodular lesion in a supraclavicular lymph node. The patient then had a supraclavicular lymph node biopsy. Light microscopy showed a tumor whose structure was suggestive of an interdigitating cell sarcoma. Enzyme and immunohistochemical analysis showed that the tumor cells possessed membranous adenosine triphosphatase activity, intracytoplasmic S100 protein, surface CD1a and CD4 antigens, and HLA-DR antigen. Ultrastructural examination showed that the cells exhibited many interdigitating cytoplasmic extensions, but no Birbeck granules. DNA content analysis of the tumor cells proved that the cells were malignant. These data are consistent with derivation from a lymph node interdigitating cell.
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PMID:Lymph node interdigitating cell sarcoma. A case report. 172 55

An increased incidence of high-grade malignant non-Hodgkin's lymphomas has been reported in homosexual men. This phenomenon appears to represent another facet of the acquired immunodeficiency syndrome (AIDS). Histologically, the majority of these lymphomas have been small noncleaved cell lymphomas or immunoblastic lymphomas, subtypes most commonly associated with a B-cell phenotype, but immunologic data supporting this have been limited. Using a plastic embedding technique, we have examined a series of 31 malignant lymphomas, including nine from the central nervous system (CNS), in patients with AIDS or at high risk for AIDS. All 31 of the lymphomas were positive with one or more of the following B-cell markers: HLA-DR/la, Pan B, Leu 12, Leu 14, and IgM. All 31 were negative for the pan-T reagent Leu 4 and myeloid-macrophage markers (Leu M1, nonspecific esterase). In addition, seven of the nine CNS lymphomas showed strong plasma membrane staining for adenosine triphosphatase, a B-associated marker. These findings provide strong immunologic evidence for a B-cell origin in the lymphomas of AIDS.
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PMID:Malignant lymphomas in the acquired immunodeficiency syndrome. Additional evidence for a B-cell origin. 245 89

T-cell subsets extracted from chronically inflamed periodontal tissues were identified using monoclonal antibodies, and their functional activity was analysed using the autologous mixed lymphocyte reaction (AMLR). Tissue was obtained from a total of 33 adult periodontitis (AP) patients and 6 normal/marginal gingivitis (N/MG) patients. All AP patients had received repeated oral hygiene instruction and root planing prior to the surgery, and the majority (30 out of 33) had at least one site with greater than 6 mm loss of attachment from the cementoenamel junction within the surgical field. The N/MG patients had no loss of attachment, and probing depths were less than 3 mm. Single cell suspensions were obtained following collagenase digestion (90 minutes at 37 degrees C) and mechanical disruption of the tissue. T-cell subsets were identified using an indirect immunofluorescence assay on cells obtained from 19 AP patients and the 6 N/MG patients. The mean (+/- standard error) helper:suppressor (T4:T8) ratio for the AP patients was found to be 0.94 +/- 0.48 compared with 1.65 +/- 0.16 for the N/MG group and 1.51 +/- 0.12 for peripheral blood controls. HLA-DR positive macrophages were identified and were found to include both acid phosphatase (AcP) positive and adenosine triphosphatase (ATPase) positive populations. Functional analysis was carried out using cells extracted from the remaining 14 AP patients. Cells from six of these 14 patients were found to be capable of spontaneous proliferation. Co-culture experiments using autologous T and non-T populations revealed that cells from only four patients were able to respond in an AMLR while those from only one of the 14 patients were able to stimulate the AMLR.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Phenotypic and functional analysis of T cells extracted from chronically inflamed human periodontal tissues. 295 90

The malignant fibrous histiocytomas (MFHs) are a histologically heterogeneous group of sarcomas that have been postulated to be derived from, or have the capacity to differentiate into, histiocytes. To determine whether MFH tumor cells actually express the features of histiocytes, i.e., bone marrow-derived cells of monocyte-macrophage lineage, we studied the antigenic and enzymatic phenotype of 13 MFHs in situ using frozen and plastic sections, respectively. Five pleomorphic three fibrous, two myxoid, two giant cell, and one histiocytic MFH were studied. While tumor cells in 12 of 13 cases were positive for HLA-A,B,C, tumor cells in all cases failed to express antigens present on bone marrow-derived macrophages, i.e., leukocyte common antigen (L3B12), HLA-DR, Leu-M3, and Leu-3a. Interestingly 8 of 13 cases were positive for CALLA. Although nonspecific, this may prove useful in differential diagnosis. Enzyme histochemistry demonstrated that tumor cells in 9 of 13 cases were positive for membrane 5' nucleotidase (5'N+). Four of these were also alkaline phosphatase positive (ALKP+). All cases were either negative or weakly positive for acid phosphatase (ACIDP) and alpha-naphthyl acetate esterase (ANAE). Tumor cells were unreactive for alpha-naphthyl butyrate esterase (ANBE) and adenosine triphosphatase (ATP). These findings indicate that MFH tumor cells do not express the enzymatic profile of cells of monocyte/macrophage lineage which are membrane 5'N-/ALKP- and ACIDP+/ANAE+/ANBE+/ membrane ATP+. In fact, these data suggest a similarity to fibroblasts which are membrane 5'N+, variably ALKP+, weakly ACIDP+/ANAE+, and ANBE-/membrane ATP-. Osteoclast-like giant cells present in two cases did express a histiocytic phenotype, suggesting that they are reactive elements not derived from admixed tumor cells. These results suggest that MFHs are primitive mesenchymal neoplasms, most likely sarcomas composed of poorly differentiated fibroblasts, and are unrelated to true histiocytic neoplasms.
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PMID:Malignant fibrous histiocytoma tumor cells resemble fibroblasts. 301 Jul 48

Immunohistological analysis of experimental gingivitis in humans was carried out to provide a baseline for the study of immunoregulatory mechanisms in chronic inflammatory periodontal disease. Using a panel of monoclonal antibodies in an avidin biotin immunoperoxidase technique, T cell subsets were identified and the pattern of Class II major histocompatibility complex (MHC) antigens determined. Twenty third-year dental students took part in the study. Following the cessation of oral hygiene procedures, gingival biopsies were taken from each of five students at days 0, 4, 8 and 21 during the development of the inflammatory lesion. Each student had one biopsy which healed uneventfully. The T4:T8 ratio showed only slight variation over the time course of the lesion varying from 2.18:1 at day 0 to 2.48:1 at day 4. At all stages the T cells displayed both HLA-DR and HLA-DQ antigens, but less than 10% had detectable IL-2 receptors. The predominant macrophage population was acid phosphatase + ve, adenosine triphosphatase -ve, HLA-DR+ and HLA-DQ+ antigens suggesting an activated phagocytic population. During the development of the lesion, the number of intraepithelial Langerhans cells (T6+) increased but there appeared to be a discrepancy between HLA-DR and HLA-DQ expression on these cells. Similarly, the keratinocytes expressed HLA-DR but failed to express HLA-DQ at any stage. These results suggest that the developing gingival lesion is a well controlled lesion and follows a similar pattern to a controlled delayed type hypersensitivity (DTH) response.
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PMID:Immunohistological analysis of experimental gingivitis in humans. 328 Jan 78

Immunocytochemical and histochemical properties of macrophages present in the subcutaneous chronic inflammatory responses surrounding adult Onchocerca volvulus (nodules) in human tissues were examined. Macrophages with strong non-specific esterase (NSE) and acid phosphatase (AcPase) activities but weak adenosine triphosphatase (ATPase) activity and HLA-DR expression (NSE+++, AcPase+++, ATPase-/+, HLA-DR-/+) were present in the centre of nodules. Many of the cells adhering to the surface of worms were NSE+++, AcPase+++, ATPase-, HLA-DR+++. The inner zone of the fibrous capsule of nodules contained macrophages with the profile NSE+++, AcPase-, ATPase-/+, HLA-DR-/+. A fourth type, NSE+++, AcPase-/+, ATPase-/+, HLA-DR+++, was located in the outer zone of the capsule, frequently within perivascular accumulations of macrophages, lymphocytes and plasma cells. Active fibroblasts were identified at the inner edge of the fibrous capsule by alkaline phosphatase staining. A feature of all nodules examined was the presence of lipid-filled macrophages, demonstrated by Oil Red O stain; these cells were usually situated in zones adjacent to the centre of nodules, and were of the NSE++, AcPase++, ATPase-/+, HLA-DR-/+ type. Lipid accumulation was not found to be related to the clinical status of the patients studied. The origin and functional significance of this lipid is unknown.
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PMID:A histocytochemical study of the macrophages present in tissue responses to adult Onchocerca volvulus. 344 Jul 61

A large number of cells containing subunit a of blood coagulation Factor XIII (FXIII) was detected by immunoperoxidase staining in lymph nodes with Hodgkin's disease. These relatively large, multipolar, mononuclear cells were often found in the immediate vicinity of malignant Hodgkin's cells. Intensive characterization of these cells carried out by immunofluorescent and enzymecytochemical techniques in double- and triple-labelling systems on the same sections clearly demonstrated that they represent tumour-associated macrophages (TAMs). FXIII containing-cells showed alpha-naphtyl acetate esterase (ANAE) positivity, and were labelled by monoclonal anti-Leu M3 antibody, a monocyte/macrophage marker, but not at all or only very weakly by anti-HLA-DR. Neither alkaline phosphatase (ALP) nor adenosine triphosphatase (ATPase) activity could be detected in these cells and surprisingly, they were consistently negative for acid phosphatase (AcP) as well. The presence of FXIII subunit a in tumour-associated macrophages suggests that this cell type might have an important role in the stabilization of fibrin deposits around tumour cells.
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PMID:Characterization of factor XIII containing-macrophages in lymph nodes with Hodgkin's disease. 355 91

The authors describe a 63-year-old woman who developed a histologically distinctive malignant cutaneous neoplasm composed of large pleomorphic cells with abundant cytoplasm and multilobate, often clefted nuclei that occasionally contained small nucleoli. This neoplastic cell population metastasized to a regional lymph node already involved by a B-cell derived chronic lymphocytic leukemia expressing surface IgMk, BA-1, and OKT1. The large metastatic tumor cells lacked surface immunoglobulin, B-lymphocyte associated antigen BA-1, T-lymphocyte associated antigens OKT1 and OKT3, and the monocyte/macrophage markers lysozyme and alpha 1-antichymotrypsin. These tumor cells expressed HLA-DR antigens, adenosine triphosphatase (ATPase), OKT6, and contained S-100 protein, i.e., they expressed the phenotype peculiar to epidermal Langerhans cells. The typical clinical and histologic features of Histiocytosis X were absent. Thus, this case appears to represent a distinctive cutaneous neoplasm composed entirely of malignant cells of dendritic cell origin which, by immunophenotypic and histochemical analysis, appear to be related to epidermal Langerhans cells.
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PMID:A distinctive cutaneous malignant neoplasm expressing the Langerhans cell phenotype. Synchronous occurrence with B-chronic lymphocytic leukemia. 388 25

Macrophage like cells expressing high concentrations of HLA-DR antigen have been identified in situ within the synovium of patients with rheumatoid arthritis. The characteristics of these cells have been determined using immunohistological analysis and combined cytochemical techniques. It was found that the majority (greater than 80%) of these cells were interspersed within the perivascular lymphocytic infiltrates occurring in the synovium. These cells did not stain with antisera against surface immunoglobulin or any Mc Abs to T lymphocyte markers. Further combined staining demonstrated that the HLA-DR + ve cells did stain with an anti-monocyte monoclonal (FMC-17), but could not be stained with a Mc Ab against C3b receptors. The interfacing of cytochemical reactions for acid phosphatase (ACP) and adenosine triphosphatase (ATPase) with immunofluorescence staining for HLA-DR demonstrated that these cells were ACP - ve ATPase + ve. This analysis led to the conclusion that the HLA-DR + ve cells found in abundance in the rheumatoid synovium expressed identical characteristics to the interdigitating cells of the normal lymph node paracortex. The possible significance of the presence of large numbers of such antigen presenting cells in the rheumatoid synovium is discussed.
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PMID:The involvement of interdigitating (antigen-presenting) cells in the pathogenesis of rheumatoid arthritis. 622 Aug 47


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