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  • Biliary atresia  (2)
  • ATP stimulation  (1)
  • Bone Scan  (1)
  • C6-glioma cells  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 689 (1982), S. 261-266 
    ISSN: 0005-2736
    Schlagwort(e): (Tulipa petal) ; ATP stimulation ; H^+ transport ; Vacuole membrane
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Chemie und Pharmazie , Medizin , Physik
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 352 (1995), S. 679-684 
    ISSN: 1432-1912
    Schlagwort(e): Key words Calmodulin antagonistsr ; Phosphoinositide turnover ; Phospholipase C ; C6-glioma cells
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  To investigate the role of calmodulin (CaM)-dependent pathways in agonist-induced phosphoinositide (PI) turnover, the influence of several CaM antagonists on PI-phospholipase C (PLC) activation in intact and permeabilized C6 glioma cells was examined. The extent of PI turnover was assessed by measuring the accumulation of inositol phosphates (IPs) in the presence of LiCl in C6 glioma cells prelabelled with myo-[3H]inositol. Trifluoperazine, N-(6-aminohexyl)-5-chloro-1-naphthalenesulphonamide (W-7), fendiline and calmidazolium themselves had no effect on basal IP formation, but concentration-dependently (1–30 μM) potentiated ATP-, NaF- and A23187-stimulated IP formation. The maximal response to ATP (1 mM) was increased by up to 50%, while the concentration for half-maximal effect (EC50, 60 μM) was unaffected by trifluoperazine. In digitonin-permeabilized C6 glioma cells, the concentration-dependent increase of PI-PLC activation elicited by free Ca2+ was potentiated by the GTP analogue, guanosine 5′-[γ-thio]triphosphate (GTPγS), with an EC50 of 6 μM. Trifluoperazine (1–30 μM) enhanced the Ca2+-stimulated IP formation concentration dependently and this potentiation was counteracted by the addition of CaM. In the combined presence of each CaM antagonist studied and GTPγS, an additive increase in IP formation was observed. The results indicate that CaM antagonists enhance stimulus-induced IP formation in C6 glioma cells primarily by increasing the Ca2+-dependent activation of PI-PLC.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1437-9813
    Schlagwort(e): Key words Technetium Tc-99m disofenin ; cholescintigraphy ; Biliary atresia ; Ultrasonography ; Neonatal hepatitis ; Neonatal jaundice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract  Technetium Tc-99m disofenin cholescintigraphy (CS) and ultrasonography (US) are two major clinical methods used in differentiating biliary atresia (BA) from neonatal jaundice. To compare the diagnostic utility of these two modalities, 66 patients with neonatal cholestasis (15 BA, 3 choledochal cyst (CC), 32 neonatal hepatitis, 13 prolonged jaundice, 2 total parenteral nutrition, and 1 sepsis) underwent Tc-99m disofenin CS and US. The diagnostic sensitivity, specificity, and accuracy of CS in differentiating BA from other forms of neonatal jaundice was 100%, 87.5%, and 90.5%, respectively, and for US 86.7%, 77.1%, and 79.4%, respectively. Tc-99m disofenin CS after premedication with phenobarbital and cholestyramine is a convenient and reliable method of differentiating BA from neonatal hepatitis, with a diagnostic accuracy superior to that of US. However, US is the initial imaging procedure of choice in patients presenting with jaundice to rule out anatomic anomalies such as CC.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    ISSN: 1437-9813
    Schlagwort(e): Technetium Tc-99m disofenin cholescintigraphy ; Biliary atresia ; Ultrasonography Neonatal hepatitis ; Neonatal jaundice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Technetium Tc-99m disofenin cholescintigraphy (CS) and ultrasonography (US) are two major clinical methods used in differentiating biliary atresia (BA) from neonatal jaundice. To compare the diagnostic utility of these two modalities, 66 patients with neonatal cholestasis (15 BA, 3 choledochal cyst (CC), 32 neonatal hepatitis, 13 prolonged jaundice, 2 total parenteral nutrition, and 1 sepsis) underwent Tc-99m disofenin CS and US. The diagnostic sensitivity, specificity, and accuracy of CS in differentiating BA from other forms of neonatal jaundice was 100%, 87.5%, and 90.5%, respectively, and for US 86.7%, 77.1%, and 79.4%, respectively. Tc-99m disofenin CS after premedication with phenobarbital and cholestyramine is a convenient and reliable method of differentiating BA from neonatal hepatitis, with a diagnostic accuracy superior to that of US. However, US is the initial imaging procedure of choice in patients presenting with jaundice to rule out anatomic anomalies such as CC.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Clinical rheumatology 14 (1995), S. 441-444 
    ISSN: 1434-9949
    Schlagwort(e): Bone Scan ; Radiography ; Reiter's Disease ; Arthritis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary Tc-99m MDP bone scans were used to evaluate the articular inflammation in 38 patients with Reiter's disease and compared with clinical examination and radiologic findings. Our data showed that Reiter's disease predominantly involves the lower limbs, especially the heels, which may be a characteristic feature of Reiter's disease. Bone scans revealed a high diagnostic sensitivity in the detection of clinical arthritis in all peripheral joints, especially in the small joints of the four limbs. The diagnostic sensitivity of radiography was generally lower than bone scintigraphy. In the presence of positive radionuclide findings, clinical arthritis was found in most joints. The scintigram, however, detects a greater number of abnormalities than does clinical assessment in the sternoclavicular joints, shoulders, metacarpophalangeal joints, and tarsals. Because of its high sensitivity, bone scintigraphy is capable of detecting subclinical arthritis, and might provide more objective evidence of early inflammatory joint disease and additional information regarding the pattern of joint involvement. In view of the advantages of low patient radiation exposure, high sensitivity, and the ability to survey the whole body, we consider bone scintigraphy as useful and better than radiography in the detection of early articular inflammation and in establishing the extent and pattern of arthritis in Reiter's disease.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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