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 denatured catalytic polypeptide of mouse brain (Na+ + K+)-adenosine triphosphatase(ATPase) was separated from microsomal membranes on polyacrylamide gels and used as an immunogen. The antiserum, characterized by immunoblots, recognizes the polypeptide corresponding to the catalytic unit in various fractions of mouse brain and cross-reacts with the catalytic unit from lamb kidney, duck salt gland, and electroplax. The same polypeptide in brain and salt gland is recognized by antiserum raised against purified lamb kidney enzyme. Light microscopy was performed with the peroxidase-conjugated second antibody method. In mouse cerebellum, immunochemical staining outlines Purkinje cell and granule cell perikarya. Intense activity is associated with regions of high synaptic content including the pericellular basket meshes and preaxonal regions of Purkinje cells and the glomeruli in the granular layer. In the molecular layer, the neuropil is diffusely reactive with distinct vertically oriented processes evident. White matter exhibits light stain deposition. Choroid plexus presents abundant reaction product only at ependymal apical surfaces, while the ependymal lining of the fourth ventricle displays little or no immunoreactivity. Specificity of the antiserum was demonstrated further in mouse kidney where staining conforms to the well-characterized localization of the enzyme along basolateral surfaces of cortical and medullary tubules. The biochemical and immunocytochemical data show the efficacy of generating antisera to brain (Na+ + K+)-ATPase using catalytic polypeptide as an immunogen.
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PMID:Purification of mouse brain (Na+ + K+)-ATPase catalytic unit, characterization of antiserum, and immunocytochemical localization in cerebellum, choroid plexus, and kidney. 609 58

The localization of carbonic anhydrase (CA) was studied in rat skeletal muscles with the use of immunohistochemical (peroxidase-antiperoxidase) method. CA was observed in all those fibers that also showed pH 4.3 stable actomyosin adenosine triphosphatase activity (type I fibers), but the reverse did not necessarily hold. More specifically, CA was apparently localized in I-bands, and a weak reaction was also observed in sarcolemma. The function of CA in muscle fibers is possibly connected with the greater demands on CO2 transport and buffer system in muscles adapted to long-lasting contractions.
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PMID:Carbonic anhydrase in the type I skeletal muscle fibers of the rat. An immunohistochemical study. 621 80

Immunocytochemical localization of Na+,K+-adenosine triphosphatase (ATPase) in fixed sections of rat retina was carried out using polyclonal antibodies to the highly purified enzyme and peroxidase-antiperoxidase and immunofluorescence techniques. In the photoreceptor layer of the rat retina, Na+,K+-ATPase immunoreactive sites were associated primarily with inner segments and only background activity was associated with the outer segments. This localization supports the proposed distribution of Na+,K+-ATPase in photoreceptor cells suggested by physiological studies. The Na+,K+-ATPase immunoreactive sites were also localized in the inner and outer plexiform layers, which are rich in synaptic contacts. The reticular pattern of immunostaining in those regions suggests that Na+,K+-ATPase immunoreactivity is associated with neuronal processes in those layers.
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PMID:Immunocytochemical localization of Na+,K+ adenosine triphosphatase in the rat retina. 631 83

The authors subjected peripheral blood smears of Torpedoes to cytochemical analysis of lipids, protein, neutral and acid polysaccahrides and of some enzymatic activities, i.e. adenosine triphosphatase (ATP-ase), acid and alkaline phosphatase, aliesterase and peroxidase. It was found that neutrophilic granulocytes are intensely PAS and aliesterase positive and weakly ATP-ase positive. Eosinophilic granulocytes show the presence of neutral polysaccharides in the matrix (which is PAS positive) and strong ATP-ase and acid phosphatase activities in the granules. Lymphocytes sometimes contain weakly PAS and aliesterase positive granules. Monocytes show some small PAS positive granules and weak acid phosphatase and aliesterase activities. Thrombocytes contain some peripheral granules which are PAS positive and slightly ATP-ase positive. There are no transitional forms between the various cellular types. The results confirm the classification of leukocytes of Torpedoes into neutrophilic granulocytes, eosinophilic granulocytes, lymphocytes, monocytes and thrombocytes and contribute some informations about the histoenzymatic content of Elasmobranch leukocytes.
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PMID:Cytochemical identification of the leukocytes of torpedoes (Torpedo marmorata Risso and Torpedo ocellata Rafinisque). 636 Jan 39

A primary cerebellar rhabdomyosarcoma (RMS) in a six and a half year old boy is reported. Microscopy of the surgical material revealed lobules of closely packed cells with a high mitotic rate, pleomorphic hyperchromatic nuclei and scant cytoplasm. At their periphery, the lobules merged with rounded cells with similar nuclei but more abundant cytoplasm. These areas were surrounded by interlacing fascicles of strap cells, which were occasionally multinucleated and showed cross striations. Electron microscopy (EM) revealed the primitive nature of the closely packed cells; however, occasional intermediate size filaments were present within their cytoplasm and focal basement membrane accumulation was observed. Cells with more abundant cytoplasm had large accumulations of thick and thin filaments while strap cells showed well-developed cross striations. Immunohistochemical studies (peroxidase-antiperoxidase technique) showed vimentin in the primitive cells and desmin, myoglobin and adenosine triphosphatase as the tumor cells appeared more differentiated. Immunoreaction with antibodies against glial fibrillary acidic protein, S-100 protein and neurofilament protein were negative. Electron microscopic and immunohistochemical studies in this case demonstrated that this was an exclusively mesenchymal tumor with rhabdomyoblastic differentiation and that the pattern of differentiation follows that seen in normal myogenesis.
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PMID:Primary rhabdomyosarcoma of the cerebellum--a light, electron microscopic, and immunohistochemical study. 673 10

Several cytochemical characteristics of mononuclear phagocytes which are used as identifying markers were studied in reactive microglia from traumatically damaged brain tissue of guinea pigs and humans as well as in globoid cells from a child with familial globoid cell leukodystrophy (Krabbes' disease). The following cytochemical methods were used: acid phosphatase, lysozyme, peroxidase, alpha-naphthyl acetate esterase, alpha-naphthyl butyrate esterase, adenosine triphosphatase, and the periodic acid-Schiff reaction (PAS reaction). Distinct activity of almost all enzymes and the PAS reaction were demonstrable in reactive microglia and globoid cells. Peroxidase however could not be demonstrated in globoid cells. The similarity of the cytochemical characteristics for mononuclear phagocytes, reactive microglia, and globoid cells tends to indicate a common identity for these cell types. The lack of peroxidase in globoid cells may be due to a final maturation and differentiation after the monocyte stage.
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PMID:Cytochemical markers for mononuclear phagocytes as demonstrated in reactive microglia and globoid cells. 677 84

The functional morphology, topography and frequency of Langerhans cells (LCs), which are significant factors in the pathogenesis of contact allergic dermatitis (CAD), were studied by histoenzymatic methods (adenosine triphosphatase (ATP-ase), acid phosphatase (AF) and alpha naphtylacetate esterase (ANAE), immunohistochemical methods (indirect immunoperoxidase (IPO) with the monoclonal antibody OKT 6), and the peroxidase-antiperoxidase (PAP) method with the polyclonal S-100 antibody in skin biopsies of 24 patients with CAD, as well in skin biopsies in experimental models in guinea pigs. The results confirmed the significant role of LCs in the pathogenesis of contact allergic dermatitis.
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PMID:Langerhans cells in the immunopathology of contact allergic dermatitis. 753 27

A new giant Gram-negative non-cultivatable symbiotic endospore-forming bacterium was found in the gut of the European hamster. This "Metabacterium" sp., provisionally named "Metabacterium criceti", sp. n., has a length of approximately 20 microns and thickness of 4 microns. It forms 1 to 2 cylindrical endospores, approximately 9 microns long and 1.4 microns thick. TEM-micrographs show a cell wall structure characteristic of Gram-negative bacteria. Vegetative cells are filled with granules 0.3 micron in diameter which resemble starch granules. The reproduction occurs with binary fission and by formation of two endospores. Of thirteen biochemical components sought, four, i.e. glycogen, triacylglycerols, peroxidase and alkaline phosphatase, were not found. Starch, acid mucosubstances, DNA, RNA, lipids, proteins, adenosine triphosphatase and acid phosphatase were found in different patterns, depending on the developmental stage of the bacterium. In the vegetative cell stage all these components, with the exception of starch, were found. In the endospore-bearing cell stage, only the starch-like cell component granules could be detected. In free endospores only DNA, RNA and acid phosphatase were found. Some of the components, i.e. DNA, lipids, starch-like granules, were linked to certain cell substructures, the distribution of others, viz. polysaccharides, RNA, adenosine triphosphatase and proteins was diffuse. The lipids, found only in vegetative cells, were associated with the cell wall.
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PMID:Characterization of two Metabacterium sp. from the gut of rodents. 1. Morphology and histochemical examination of a new Metabacterium sp. from the gut of the European hamster (Cricetus cricetus) 769 4

This study was performed to determine whether the hypoglossal nerve (cranial nerve XI [XII]) would serve as a useful donor for laryngeal reinnervation by anastomosis to the recurrent laryngeal nerve (RLN). Twenty hemilarynges in 10 dogs were studied prospectively after XII-RLN anastomosis (group A; n = 5), split XII-RLN anastomosis (group B; n = 3), XII-RLN anastomosis with a 2-cm interposition graft (group C; n = 2), no treatment (group D; n = 5), RLN section (group E; n = 2), or ansa cervicalis-RLN anastomosis (group F; n = 3). Spontaneous activity was observed monthly by infraglottic examination through permanent tracheostomies and was recorded by electromyography. Laryngeal adductory pressure and induced phonation were obtained by stimulating the RLN while passing a pressure transducer balloon or humidified air through the glottis. At sacrifice, the laryngeal muscles were stained for adenosine triphosphatase to determine the ratio of type I to type II fibers. Retrograde labeling of the brain stem was performed with horseradish peroxidase. Infraglottic examination at 6 months showed a full range of adductory motion in groups A and B during the swallow reflex, comparable with that in group D. Groups C and F showed good bulk and tone, but little spontaneous motion. Group E remained paralyzed. Stimulation of the transferred nerves caused more activity in groups A and B than in the other groups; groups C and F partially adducted at high levels. The laryngeal adductory pressure responses of groups A and B were similar to those of group D. The XII-reinnervated larynges were capable of producing normal induced phonation. Retrograde labeling of the RLN showed that the reinnervating axons originated only in the hypoglossal nucleus. Electromyography of the reinnervated adductor muscles confirmed spontaneous activity in the dogs (awake). Histochemical analysis confirmed slow-to-fast transformation of both the posterior and lateral cricoarytenoid muscles, indicating that significant reinnervation occurred. We conclude that the hypoglossal nerve functions well as a donor for adductory reinnervation of the larynx.
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PMID:Laryngeal reinnervation with the hypoglossal nerve. I. Physiology, histochemistry, electromyography, and retrograde labeling in a canine model. 1140 44

The development of immune-mediated diabetes in BB rats may involve a defect of the gastrointestinal tract (GI), as suggested by increased gut permeability. This study aimed at measuring invertase, maltase, lactase, and peroxidase activities in the duodenum of diabetesprone BioBreeding (BBdp) rats and control BioBreeding rats (BBc) given free access to NIH-07 diet up to the time of killing at 60 66 d of age. After washing the entire small intestine, the duodenal mucosa was scraped off in the first 5-cm segment from the pylorus and frozen in distilled water. Invertase, maltase, and lactase activities were measured by monitoring the conversion of [U-(14)C]sucrose, [U-(14)C]maltose, and [D-[1-(14)C]glucose] lactose to radioactive hexoses, which were phosphorylated in the presence of adenosine triphosphatase and yeast hexokinase and then separated from their precursor by ion-exchange chromatography. Peroxidase activity was measured by a spectrophotometric procedure. In the BBdp rats, the activity of invertase, maltase, and lactase averaged, respectively, 70.2 +/- 4.4, 81.2 +/- 4.3, and 75.7 +/- 4.1% (n = 16 and p < 0.001 in all cases) of the control values found in BBc rats of the same sex. Inversely, after exclusion of two female BBc rats with abnormally high plasma D-glucose concentration, the activity of peroxidase in the BBdp rats averaged 157.4 +/- 20.0% (n = 16; p < 0.02) of the mean control value recorded in BBc rats of the same sex (100.0 +/- 9.3%; n = 14). These findings are compatible with the view that a proinflammatory state of the GI associated with compromise function may precede the occurrence of pancreatic insulitis in BBdp rats and, possibly, human subjects with type 1 diabetes.
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PMID:Invertase, maltase, lactase, and peroxidase activities in duodenum of BB rats. 1262 29


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