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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 57 (1989), S. 0 
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Cells of Bacillus subtilis 168+ were labeled with 32P-orthophosphate during the process of sporulation, germination and outgrowth. By two-dimensional gel electrophoresis, at least 30 protein species were found to be radioactively labeled; 30% of these were modified by phosphorylation. Significant changes in the protein phosphorylation pattern during growth and cellular differentiation could be demonstrated. Using γ-32P-ATP evidence for an ATP-dependent protein kinase was also obtained. Under these conditions 4 proteins with a molecular mass of 109 600; 103 100; 73 300 and 32 200 Da were found to be phosphorylated.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 165 (1975), S. 111-125 
    ISSN: 1433-8580
    Keywords: Bencyclan-isolated atria-anaesthetized cat-contractility ; bloodpressure ; Bencyclan ; isolierter Vorhof ; narkotisierte Katze ; Kontraktilität ; Blutdruck
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Am isolierten Meerschweinchenvorhof sowie an narkotisierten Katzen und Hunden wurde die Wirkung des Bencyclans auf Herz und Blutdruck untersucht. Es fanden sich folgende Ergebnisse: 1.) Bencyclan senkt dosisabhängig Kontraktionskraft, maximale Kontraktionsgeschwindigkeit und die Kontraktionsfrequenz am Meerschweinchenvorhof; dabei wird die funktionelle Refraktärzeit verlängert. 2.) Die negativ inotrope Wirkung des Bencyclans ist am Meerschweinchenvorhof durch Steigerung der Ca++-Konzentration aufhebbar. 3.) Bei gleichzeitiger Bencyclaneinwirkung bleibt die Orciprenalinwirkung am linken Vorhof unbeeinflußt, während die Serotoninwirkung abgeschwächt ist. 4.) 5mg/kg Bencyclan bewirken an der narkotisierten Katze einen signifikanten Abfall von Blutdruck und Kontraktilität des Herzens. Während der Blutdruck innerhalb weniger Minuten wieder den Vorwert erreicht, hält die Kontraktilitätsminderung länger an. 5.) 2 von 10 Katzen und 2 von 3 Hunden starben innerhalb weniger Minuten nachdem 5 mg/kg Bencyclan und 1 mg/kg Propranolol im Abstand von 15 min. injiziert wurden. 6.) Eine Vorbehandlung mit 20 mg/kg Propranolol i.m. steigert bei Mäusen die akute i.v.-Bencyclantoxizität nicht signifikant.
    Notes: Summary In the isolated guinea pigs atria as well as in anaesthetized cats and dogs we studied the cardiovascular effects of bencyclan. The following results were found: 1.) Bencyclan causes a dose-dependent diminution of the force of contraction, the maximal rate of rise of contraction, and the frequency of the isolated atria, while the functional refractory period is prolonged. 2.) The negative inotropic effect of bencyclan can be antagonized in the isolated atria by increasing Ca++-concentrations. 3.) In the isolated left atria the effect of orciprenaline is unchanged while the effect of serotonin is diminished by bencyclan. 4.) In the anaesthetized cat 5 mg/kg of bencyclan cause a significant decrease of blood-pressure and contractility. While the fall of blood-pressure is reversed within a few minutes, the contractility is diminished for a longer time. 5.) 2 of 10 cats and 2 of 3 dogs died within a few minutes when 5 mg/kg bencyclan and 1 mg/kg propranolol were injected within an interval of 15 minutes. 6.) Pretreatment with 20 mg/kg propranolol i.m. does not increase the acute toxicity of bencyclan in mice significantly.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0428
    Keywords: Pancreatic islets ; insulin secretion ; insulin content ; glucagon secretion ; glucagon content ; wistar rats ; sand rats ; glucose ; arginine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Isolated pancreatic islets of normoglycemic sand rats do not respond to 2.5 mM glucose with an enhanced glucagon secretion, which could be observed in normal Wistar rats. Arginine stimulates glucagon release in the presence of 2.5 mM glucose in Wistar rats as well as in sand rats. The secretion pattern is not caused by insulin deficiency since sand rat islets are characterized by an increased insulin secretion rate in vitro. This paradoxical glucagon secretion is not caused by a changed glucagon content but might be related to this species which is able to develop a diabetic syndrome spontaneously.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 259 (1968), S. 186-188 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1041
    Keywords: somatostatin analogue ; oral formulation ; gastrointestinal absorption ; SMS 201-995 ; healthy volunteers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary To determine the local gastrointestinal absorption of a new synthetic somatostatin analogue (SMS 201-995 = Sandostatin), an intestinal tube was passed in eight healthy volunteers and on different days an aqueous solution was administered at four different locations: stomach, proximal duodenum, ligament of Treitz and jejunum. In a follow-up study, an oro-ileal tube was passed in six of the original volunteers and the drug solution was administered in to the terminal ileum. The aqueous solution of SMS was rapidly absorbed from the gastrointestinal tract after local application, and it was well tolerated. Absorption of the drug from the different sites was comparable, although there was a tendency to decreased peptide absorption after ileal administration. Absorption of the drug was quite variable between the subjects and the different locations. The dose-corrected systemic availability relative to subcutaneous administration in another study was 0.28%. However, significant plasma SMS concentrations were achieved, suggesting that oral delivery of the polypeptide may eventually be possible for long-term treatment of a variety of disorders.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Several investigations suggest changes of cellular metabolism and perhaps a precocious hemolysis of red cells caused by their prolonged stagnation in the spleen. Comparisons of red cell enzyme and substrate activity in splenic arterial and venous blood have been done in rabbits with experimentally induced stenosis of the splenic vein and in normal animals. In controls no difference of the parameters examined were found. In rabbits with splenic venous stenosis and retarded blood flow in the spleen the erythrocytes in the splenic vein showed significantly reduced values of G-6-PDH and GSSG-reductase. The results suggest “ageing” processes of red cells during their stagnation in the spleen. Besides, a part of the erythrocytes seems to be destructed precociously, because in all animals with splenic venous stenosis anemia and reticulocytosis have been observed.
    Notes: Zusammenfassung Verschiedene Untersuchungen legten den Verdacht nahe, daß die Stagnation der Erythrocyten in der Milz zu Änderungen des Zellstoffwechsels und damit vielleicht zu einer vorzeitigen Hämolyse führen können. Durch vergleichende Untersuchungen einiger Ferment-und Substrat-Aktivitäten der Erythrocyten in der Milzvene und Milzarterie wurde versucht, dieser Frage experimentell näherzukommen. Sie wurden an normalen Kaninchen und an Tieren mit künstlich gesetzter Milzvenenstenose durchgeführt. Bei normalen Tieren bestehen keine Unterschiede der gemessenen Größen. Bei den Tieren mit Milzvenenstenose, bei denen damit eine verlangsamte Blutströmung durch die Milz entsteht, wurden in den Erythrocyten der Milzvene signifikant erniedrigte Werte der G-6-PDH und der GSSG-Reductase gegenüber denen in der Milzarterie gefunden. Diese Befunde legen den Verdacht nahe, daß die Erythrocyten während der Stagnation in der Milz „älter“ werden. Ein Teil geht wohl auch vorzeitig zugrunde, denn es tritt bei allen Tieren mit Milzvenenstenose eine Anämie und eine Reticulocytose auf.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 38 (1968), S. 74-76 
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-2242
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 260 (1968), S. 154-156 
    ISSN: 1432-1912
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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