Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

---

Query: EC:1.3.5.1 (succinate dehydrogenase)
8,177 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A 57-year-old man with generalized, subcutaneous fat necrosis was found at autopsy to have islet cell carcinoma of the pancreas. The histologic diagnosis of islet cell carcinoma was confirmed by the finding by electron microscopy of characteristic intracytoplasmic granules within pancreatic neoplastic cells. Lipase levels were elevated in serum as well as in tissues in areas of subcutaneous fat necrosis. Enzyme histochemical stains for alkaline and acid phosphatase, leucine, aminopeptidase, succinic dehydrogenase, and indoxyl and nonspecific esterase were positive in the areas of subcutaneous fat necrosis. This is the first report of the association of islet cell carcinoma of the pancreas with generalized subcutaneous fat necrosis.
...
PMID:Association of islet cell carcinoma of the pancreas with subcutaneous fat necrosis. 23 77

We report the findings on clinicopathologic examination of three patients with balloon cell melanoma of the choroid. Ophthalmoscopically, all three had small, slowly progressive tumors at the posterior pole, with an encircling yellow halo. With fluorescein angiography, the yellow halo showed fluorescence similar to the remainder of the tumor, thus differentiating this substance from lipofuscin pigment, drusen and exudates. Light microscopy demonstrated prominent balloon cells which were most numerous at the tumor margins. These cells showed variable melanin pigmentation and were negative for lipid, acid mucopolysaccharide, and glycogen. Special enzyme studies (lactic dehydrogenase, succinic dehydrogenase, acid phosphatase, beta glucoronidase and aminopeptidase) demonstrated some similarity to melanocytic cells. Electron microscopy revealed premelanosomes and complex melanosomes in the cytoplasm of balloon cells without evidence of significant lipid.
...
PMID:Malignant melanoma of the choroid with balloon cells a clinicopathologic study of three cases. 94 29

Morphometric, histological and histochemical studies were carried out on the sublingual salivary glands of the Arabian camel (Camelus dromedarius). The glands are of the tubulo-acinar type and consist of many lobules that are composed of two types of cells, mucoserous and seromucous. The mucoserous cells form the main secretory units of the gland but seromucous cells are much more seldom and form associated acini. The former cells secrete and elaborate large quantities of neutral mucosubstances, sialomucins and little sulphomucins while only the apical portion of the latter cells shows weak to moderate activity for neutral and acid mucosubstances. The histoenzymological tests employed here detected a considerable activity of alkaline phosphatase, succinic dehydrogenase, aminopeptidase and non-specific esterases, but weak activities of cytochrome oxidase, peroxidase and no activities of triacylglycerol lipase, beta-glucoronidase and amylase. The functional significance of these findings is discussed.
...
PMID:Structure and histochemistry of the sublingual salivary glands of the one-humped camel (Camelus dromedarius). 213 94

In this work the biocompatibility of porous bioceramic implanted to the rabbit femoral bone was studied. The animals were killed 3, 6, 9, 14, 18 and 30 days after implantation and the callus with surrounding periosteum from the site of implant was taken for the studies. Morphological investigations of the callus were carried out up to the 30th day of healing of the bone tissue. Moreover, acid mucopolysaccharides level and activity of enzymes (acid and alkaline phosphatase, aminopeptidase, non-specific alpha-esterase, adenosine triphosphatase and succinate dehydrogenase) were studied up to the 18 day of the callus development. The results show that after bioceramic implantation, morphology of particular stages of the callus development, behaviour of acid mucopolysaccharides as well as localization and activity of enzymes are the same as in the normal healing process of the injured bone tissue. After 30 days total union of the mature bone tissue with bioceramic was established. We conclude that porous bioceramic satisfies the requirements for biomedical materials and may be safely used in the treatment of certain bone system diseases in humans.
...
PMID:Application of porous bioceramic in experimental therapy of bone injuries. III. Dynamics of the callus development at the site of porous bioceramic implantation. Morphological, histochemical and histoenzymological studies. 323 60

1. The preparation of gram quantities of isolated epithelial-cell ;ghosts' from mucosal scrapings of rat small intestine is described. The method involves dispersing the tissue by gentle homogenization in 6% dextran in Krebs-Ringer phosphate, pH7.4, followed by filtration through nylon cloth and sedimentation by low-speed centrifuging. 2. The isolated epithelial-cell ;ghosts' contained all of the DNA, but only 52% of the protein and 53-57% of the RNA of the original homogenate. They contained most of the activity of the following enzymes found in the homogenate: aminopeptidase (71%); alkaline beta-glycerophosphatase (82%); invertase (92%); adenosine triphosphatase (93-116%); acid beta-glycerophosphatase (83%); nonspecific esterase (76%); succinate dehydrogenase (96%). Only small proportions of the total lactate-dehydrogenase (10%) and phosphoglucose-isomerase (2%) activities found in the homogenate were recovered in the isolated cell ;ghosts'. 3. The epithelial-cell ;ghost' preparation did not respire unless cofactors and substrates were added, and did not consume glucose or produce lactic acid from glucose. 4. The effect of varying the composition of the homogenization medium was studied. Concentrations of dextran (mol.wt. 15x10(4)) from 1 to 12%, solutions of dextrans (all at 6%) with mol.wt. varying between 3.6x10(4) and 2x10(6), and a solution of 8% polyethylene glycol (mol.wt. 4000) served equally well for the production of epithelial-cell ;ghosts'. Two of these solutions, however, 12% dextran (mol.wt.15x10(4)) and 6% dextran (mol.wt. 2x10(6)), were too viscous to allow the complete sedimentation of the cell ;ghosts' at low relative centrifugal forces. Omission of either Krebs-Ringer phosphate or dextran from the medium resulted in almost complete cell breakage during the homogenization. 5. The isolated cell ;ghosts' were used as a starting material for subcellular fractionation of rat intestinal mucosa by differential centrifugation. The distributions of protein and succinate-dehydrogenase activity among the fractions were compared with corresponding values in fractions isolated by differential centrifugation of mucosa homogenized in 0.3m-sucrose-5mm-EDTA, pH7.4. The method in which cell ;ghosts' were used as starting material gave a better separation and cleaner fractions than the method in which untreated mucosal scrapings were used.
...
PMID:The isolation and properties of epithelial-cell "ghosts" from rat small intestine. 422 Sep 68

Pinocytosis was induced in rat kidney by exposure to horseradish peroxidase (HRP). Pinocytic vesicle preparations were enriched after homogenization of kidney cortex by differential centrifugation and free-flow electrophoresis with HRP as an exogenous marker. Vesicles were identified by enzymatic analysis and by electron microscopy, including specific staining procedures. Typical brush-border enzymes such as alkaline phosphatase, aminopeptidase, 5'-nucleotidase, lysosomal acid phosphatase, and mitochondrial succinic dehydrogenase were reduced in the vesicular fraction, compared to the kidney cortex homogenate. Glucose-6-phosphatase and Na(+)-K(+)-ATPase were only slightly increased in the fraction. These results indicate that preparations of pinocytic vesicles from rat kidney cortex can be enriched. They have biochemical characteristics that differ from those of the cell organelles and membranes previously purified from renal tissue.
...
PMID:Analysis of the pinocytic process in rat kidney. I. Isolation of pinocytic vesicles from rat kidney cortex. 437 80

Cefotiam (CGP 14221/E; SCE 963), a semisynthetic cephalosporin, was administered as a single dose by i.v. injection to rats l(up to 1.8 g/kg body-weight) and rabbits (up to 1.7 g/kg body-weight). Cephaloridine served as positive control (1.0 and 0.75 g/kg in rats; 0.3 and 0.28 g/kg in rabbits). The animals were sacrificed 24 h after injection and the kidneys preserved for routine histology and enzyme histochemistry (alkaline phosphatase, aminopeptidase, succinate dehydrogenase, esterase). Serum samples (Na+, K+, Cl-, urea, creatinine, LDH, alkaline phosphatase) and 24-h urine (Na+, K+, Cl-, urea, creatinine, protein, LDH, aminopeptidase) were analysed before and 24 h after injection. Minimal, irregularly scattered, degenerative changes in the proximal tubules which were not dose-dependent in degree were observed in rat kidneys following cefotiam injection. A slight dose-dependent degeneration in up to 50% of proximal tubular cells with loss of brush-border membrane enzyme activity was observed in rabbit kidneys. In both animal species the ability to concentrate urine was retained and urea and creatinine serum levels hardly affected. Following cefotiam injection a dose-dependent 4-fold excretion of urinary protein but not of LDH was observed in rabbits only. By contrast, cephaloridine caused extensive degeneration and necrosis in up to 90% of proximal tubular cells in both rats and rabbits, which was accompanied with formation of enzymically active hyaline casts, loss of urine-concentrating capacity of the kidney, elevated serum levels of urea and creatinine and an increased urinary excretion of LDH (60-fold in rats, 20-fold in rabbits) and protein (3-fold in rats, 10-fold in rabbits). Histochemistry and electron microscopy of rabbit kidneys suggested a loss of microvilli from proximal tubule cells by endocytosis and thus degeneration following injection of large doses of cefotiam, whereas cell disruption and necrosis prevailed after cephaloridine. The action of cefotiam on the proximal tubule cells is, therefore, not only quantitatively but possibly also qualitatively different from that of cephaloridine. Semiquantitative evaluation of tubular injuries in alkaline phosphatase-stained kidney sections and measurements of LDH and protein content in 24-h urine samples were advantageous in determining the quantity and the quality of nephrotoxic effects.
...
PMID:Nephrotoxicity of cefotiam (CGP 14221/E) in rats and rabbits. 627 Oct 94

Intrauterine thymectomy was successfully performed on 9 guinea pig foetuses at the gestational age of 36-48 days. This resulted in a significant suppression of the phytohemagglutinin (PHA) response of the whole blood lymphocytes at the age of 3 mth. The in utero-thymectomized guinea pigs and their littermate non-thymectomized controls were operated on by making 4 symmetrical dorsal skin incisions and by subcutaneously implanting 8 standardized pieces of viscose cellulose sponge. On the 1st, 3rd, 5th and 10th days the tensile strength of the wounds was determined and the implants were analysed histologically and enzymehistochemically. At the time of incipient fibroplasia on the 5th post-operative day, the tensile strength of the wounds, the number of fibroblasts and the activities of aminopeptidase and succinate dehydrogenase were clearly less in the guinea pigs which had been thymectomized in utero. These findings indicate that adequate thymic function was necessary for normal fibroblast proliferation, since intrauterine thymectomy led to a temporary delay in the beginning of the fibroblastic phase in wound healing.
...
PMID:Effect of intrauterine thymectomy on granulation tissue formation. An experimental study. 660 77

The cytochrome oxidase (CO), aminopeptidase (AMP), succinic dehydrogenase (SD), acid phosphatase, esterase, and alkaline phosphatase of rabbit mononuclear (MN) and polymorphonuclear (PMN) peritoneal exudate cells and pulmonary alveolar macrophages (AM) - air dried on Mylar strips - were characterized by histochemical techniques with respect to stability, activators, inhibitors, and pH optima. A granule count method was established for the quantitation of these enzymes. For the acid phosphatase of MN, in which the most precise results were obtained, time, pH, substrate, and inhibitor curves resembled those commonly obtained biochemically. Five of these enzymes were usually more active in AM than MN, whereas the sixth, alkaline phosphatase, was not present in either cell type. AM also tended to consume more oxygen than MN and to divide more frequently. Since the most active cells in the population would be first involved in the host's defense against microbial agents, a comparison was made of the 10 per cent of the AM and MN with the highest enzymatic activities. No differences were found in the granule counts that were not reflected by the means. However, within a given AM population, cells containing ingested dust particles seemed to have higher enzymatic activities than those without particles. MN had greater acid phosphatase and SD activities than PMN and consumed more oxygen, but the CO, AMP, and esterase activites of both types of cells were of similar magnitude. PMN showed high alkaline phosphatase activity; MN showed none. A survey of the histochemical literature indicates that a positive correlation between the enzymatic and phagocytic activities of both MN and PMN exists in vivo.
...
PMID:A histochemical study of phagocytic and enzymatic functions of rabbit mononuclear and polymorphonuclear exudate cells and alveolar macrophages. I. Survey and quantitation of enzymes, and states of cellular activation. 1402 72

The present study was performed to unravel the mechanisms of systemic acquired resistance (SAR) establishment and resistance signaling pathways against the canker-rot fungus (Inonotus obliquus strain IO-U1) infection in Japanese birch plantlet No.8. Modulation of protein-profile induced by salicylic acid (SA)-administration was analyzed, and SA-responsive proteins were identified. In total, 5 specifically expressed, 3 significantly increased, and 3 significantly decreased protein spots were identified using liquid chromatography/tandem mass spectrometry (LC/MS/MS) and the sequence tag method. These proteins were malate dehydrogenase, succinate dehydrogenase, phosphoglycerate kinase, diaminopimalate decarboxylase, arginase, chorismate mutase, cyclophilin, aminopeptidase, and unknown function proteins. These proteins are considered to be involved in SAR-establishment mechanisms in the Japanese birch plantlet No 8.
...
PMID:Proteomic Analysis of Responsive Proteins Induced in Japanese Birch Plantlet Treated with Salicylic Acid. 2825 Mar 84


1

---