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  • 11
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 3 (1976), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. The effects of glucagon on the secretion of pancreatic juice were investigated using blood-perfused canine pancreas preparations.2. Intravenous administration of glucagon (3–30 μg/kg) to the donor dog elicited a dose-dependent increase in pancreatic secretion. Intra-arterial administration of glucagon (10–100 μg) into the perfused pancreas also elicited increased secretion.3. There were slight increases in amylase concentration of the pancreatic juice with the largest doses of glucagon given by either route.4. Glucagon-induced secretion was not modified by treatment with phentolamine, propranolol, atropine, guanethidine, tetrodotoxin, haloperidol, prostaglandin F2a or calcitonin.5. The results suggest that glucagon acts directly on the exocrine cells of the canine pancreas.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 1 (1974), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: SUMMARY 1. Pancreatic secretion has been monitored in the isolated, blood-perfused canine pancreas, and the effects of depletion of serum calcium by infusion of EGTA on the increases in secretion produced by intra-arterial injections of dopamine and secretin have been investigated.2. Under resting conditions in preparations in dogs fasted for 24 h, the mean rate of pancreatic secretion was 16.4 μ1/min (s. e. m. = 2, n= 12). The mean concentrations of protein, bicarbonate and chloride in the pancreatic juice were 53.8 mg/ml (s. e. m. = 4.5), 18.0 mmol/1 (s. e. m. = 1.1) and 122.5 mmol/1 (s. e. m. = 7.5), respectively. Infusion of EGTA had no effect on resting secretion.3. Secretion elicited by dopamine or secretin was diminished about 50% during the intra-arterial infusion of EGTA (10−2 mM/ml) in the perfusing blood. The protein concentration in the secretion was diminished to a similar extent. The concentrations of bicarbonate and chloride in the pancreatic juice was not modified by EGTA infusion.4. Concomitant infusion of an equimolar concentration of CaCl2 solution abolished the inhibitory effects of EGTA infusion on the secretory responses to dopamine or secretin.5. The results suggest that dopamine and secretin influence the exocrine secretions of the pancreas by actions on both acinar and ductular cells. Acinar cell secretion is more susceptible to depletion of serum calcium levels than is secretion from ductular cells.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical and experimental pharmacology and physiology 3 (1976), S. 0 
    ISSN: 1440-1681
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: 1. Effects of calcitonin on dopamine-, secretin- and pancreozymin-induced pancreatic secretion were investigated in the isolated blood-perfused canine pancreas.2. The volume of pancreatic secretion induced by pancreozymin given intra-arterially (i.a.) was decreased by an i.a. infusion of 1 u/min of calcitonin, but that induced by dopamine or secretin given i.a. was not affected by calcitonin treatment.3. Amylase concentration in pancreatic juice either in spontaneous secretion in the resting state or in that of stimulated secretion by pancreozymin was decreased approximately 30% by calcitonin treatment, but amylase concentration in pancreatic juice induced by dopamine or secretin was not affected by calcitonin treatment.4. Calcitonin had no effect on bicarbonate concentration in pancreatic juice stimulated by these secretagogues.5. Calcium concentration in pancreatic juice in the resting state was reduced about 36% by calcitonin treatment. Calcitonin caused a decrease in a calcium concentration in the pancreozymin-induced secretion, but did not cause any change in the dopamine- or secretin-induced one.6. These results suggest that calcitonin may affect the secretory mechanism of the acinar cells but not that of the ductular cells, and that the acinar cells are active even in the resting state.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 110 (1984), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Human epidermal cells were cultured with pemphigus antibody in the presence of hydrocortisone, methlprednisolone sodium succinate, dapsone and gold. Hydrocortisone and methylprednisolone reduced the production of the enzyme plasminogen activator but dapsone and gold had no effect. These results support the hypothesis that corticosteroids have dual effects on pemphigus through inhibition of plasminogen activator production by epidermal cells and suppression of pemphigus antibody production by B lymphocytes.
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 109 (1983), S. 0 
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The molecular sizes of secreted and cell-associated plasminogen activators from four cultured cell types were determined using an SDS-PAGE technique in which plasminogen and casein were included during polymerization of the polyacrylamide gel. The major bands of plasminogen activators secreted by human neonatal epidermal cells, human adult epidermal cells and transformed human squamous cells migrated the same distance as the high molecular weight band of authentic urokinase, indicating that the apparent molecular weight of these plasminogen activators was approximately 55,000 daltons. Plasminogen activator extracted from normal adult human epidertnis also migrated with this major band of plasminogen activator, and a minor higher molecular weight band was also detected. In contrast, plasminogen activators secreted by transformed mouse squamous cells migrated between the high molecular weight band (∼ 55K) and the low molecular weight band of urokinase (∼ 32K), indicating that plasminogen activators of mouse epidermal cells differ from those of human epidermal cells. The mobility of the major bands of plasminogen activators detected in cell lysates of the four cell types was identical to that of secreted plasminogen activators.
    Type of Medium: Electronic Resource
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  • 16
    ISSN: 1572-8838
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Amorphous ternary palladium-based alloys containing platinum group metals as an additional element were prepared by rapid quenching from the molten state and their anodic characteristics were investigated in a 4 mol dm−3 NaCl solution of pH 4 and 80° C. The amorphous alloys containing sufficient quantities of rhodium, platinum or iridium were passivated by anodic polarization and their corrosion rates at high current densities in the chlorine evolution region were extremely low. This fact was attributed to the formation of a highly protective passive film due to both the transformation to the amorphous structure and the addition of rhodium, platinum or indium. The electrocatalytic activities for chlorine evolution of amorphous alloys were higher than those of pure platinum group metals except palladium. In particular, the amorphous Pd41Ir40P19 alloy had the desired stable, high electrocatalytic activity for chlorine evolution and the high overvoltage for oxygen evolution.
    Type of Medium: Electronic Resource
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  • 17
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 40 (1984), S. 1395-1396 
    ISSN: 1420-9071
    Keywords: Astropecten latespinosus ; starfish ; tetrodotoxin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A toxin causing paralysis was detected in the starfishAstropecten latespinosus. The toxin was purified by a method consisting of charcoal treatment and chromatography on CM-Sephadex C-25 and Bio-Rex 70. The toxin was identified as tetrodotoxin by its behavior in thin-layer chromatography and electrophoresis and its1H-NMR spectrum.
    Type of Medium: Electronic Resource
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  • 18
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 40 (1984), S. 971-972 
    ISSN: 1420-9071
    Keywords: Rat brain ; Enolase ; acrylamide ; acrylamide derivatives ; neurotoxicity ; structure-activity relationship
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Acrylamide and its related compounds inhibited brain enolases in vitro independently of their neurotoxicity. The inhibitory potency was a function of the binding constants of the compounds for phenylalanine. The binding constant for tryptophan was higher in neurotoxic compounds than in non-neurotoxic ones.
    Type of Medium: Electronic Resource
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  • 19
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Es wurde die Potenz sechs β-adrenergischer Blockierungsmittel auf positiv inotrope Wirkung von Noradrenalin am isolierten, Blut zuführenden Papillarmuskel des Hundes vergleichend untersucht. Die Reihenfolge der Wirksamkeit: Köl366〉pindolol〉C-3〉Y-6124=YB−2 = propranolol (30:10:5:1)
    Type of Medium: Electronic Resource
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  • 20
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Mit neu ausgebauter Methode sind 8 ältere und neuere β-Blocker auf ihre Eigenwirkung und ihre Wirksamkeit als Noradrenalin-Antagonisten geprüft worden. Die abgestuften Wirksamkeitszahlen sind: Kö1366 (20)〉Pindolol (10)〉C-3 (5)〉YB-2=Y-6124 (3)〉Propranolol (1)〉Practolol (2/3)〉Sotalol (1/3).
    Type of Medium: Electronic Resource
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