GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1432-1440
    Keywords: Plasma-Renin-Aktivität ; Propranolol ; Prindolol ; Plasma renin activity ; propranolol ; prindolol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary To investigate the effect of propranolol and prindolol on renin secretion plasma renin activity (PRA) was determined overnight at short-time intervals in 10 sodium-restricted normal supine subjects. 4 of them were on a 4-days medication with propranolol, 3 were treated with prindolol and 3 were used as control group. In normal controls renin was secreted episodically and showed characteristic night-day variations. Both in propranolol and in prindolol-treated subjects secretory episodes in renin secretion either did not occur or were less frequent than in normal controls. With one exception night-day variations in renin secretion were not observed. Mean PRA values were significantly lower than in the control group (p〈0.001). Our results show that both propranolol and prindolol lower PRA and eliminate or reduce the frequency of secretory episodes. It is concluded that the sympathetic nervous system plays an important role in regulating night-day variations and short-time fluctuations of renin secretion in normal supine man.
    Notes: Zusammenfassung Um den Effekt von Propranolol und Prindolol auf die Reninsekretion zu untersuchen, wurde unter natriumarmer Ernährung bei 10 liegenden Normalpersonen in kurzen Zeitabständen über Nacht die Plasma-Renin-Aktivität (PRA) bestimmt. 4 Personen standen unter einer 4tägigen Behandlung mit Propranolol, 3 wurden über denselben Zeitraum mit Prindolol behandelt und 3 Personen dienten als Kontrollgruppe. Bei Normalpersonen zeigte Renin sowohl eine episodische Sekretion als auch einen typischen Nacht-Tag-Rhythmus. Unter Propranolol und Prindolol wurden Sekretionsepisoden des Renins entweder nicht beobachtet oder traten seltener auf. Eine Nacht-TagSchwankung der Reninsekretion war mit einer Ausnahme nicht zu beobachten. Unter beiden Betablockern war die mittlere PRA signifikant niedriger als bei Kontrollpersonen (p〈0.001). Unsere Ergebnisse zeigen, daß Propranolol und Prindolol die Renin-Aktivität senken und entweder die episodische Reninsekretion aufheben oder zu einer Frequenzabnahme der Sekretionsepisoden führen. Unsere Resultate erlauben die Schlußfolgerung, daß das sympathische Nervensystem eine bedeutende Rolle in der Steuerung der Nacht-Tag-Rhythmik und in der Regulation der Kurz-ZeitSchwankungen der Reninsekretion spielt.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 53 (1975), S. 391-393 
    ISSN: 1432-1440
    Keywords: Aldosteron ; Renin ; Spironolacton ; Primärer Aldosteronismus ; Aldosterone ; renin ; spironolactone ; aldosteronism primary
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In a patient suffering from Conn's syndrome analysis of short-time fluctuations of plasma aldosterone, plasma cortisol and plasma renin activity were performed before and after a 9-months therapy period with spironolactone. Under the former conditions aldosterone was secreted episodically and a highly significant correlation was found between plasma aldosterone and plasma cortisol (r=0.817,p〈0.001) while plasma renin activity was undetectable (〈0.16 ng/ml/3 hr). Following a 9-months therapy with spironolactone episodic secretion of aldosterone and the significant correlation between aldosterone and cortisol persisted (r=0.819,p〈0.001) in the presence of an abnormally high plasma renin activity. First, when the secretion of ACTH was suppressed by dexamethasone a weak correlation was found between renin activity and aldosterone (r=0.517,p〈0.05). Our results show that both before and after a 9-months therapy with spironolactone episodic aldosterone release of an aldosterone producing adrenal adenoma was mediated through ACTH and that endogeneous angiotensin II had no or only little influence.
    Notes: Zusammenfassung Bei einer Patientin mit Conn Syndrom wurden vor und nach einer 9-monatigen Behandlung mit Spironolacton Plasma-Aldosteron, Plasma-Cortisol und Plasma-Renin-Aktivität in kurzen Zeitabständen bestimmt. Vor Behandlung wurde Plasma-Aldosteron episodisch sezerniert; es fand sich eine hochsignifikante Korrelation zwischen Plasma-Aldosteron und Plasma-Cortisol (r=0.817,p〈0.001). Die Plasma-Renin-Aktivität lag ständig unterhalb des aufdeckbaren Meßbereiches (〈0,16 ng/ml/3 h). Nach 9-monatiger Behandlung mit Spironolacton war in Gegenwart einer deutlich über der Norm erhöhten Plasma-Renin-Aktivität sowohl eine episodische Sekretion des Plasma-Aldosterons als auch eine signifikante Korrelation zwischen Plasma-Aldosteron und Plasma-Cortisol nachweisbar (r=0.819,p〈0.001). Erst nach Suppression der ACTH-Sekretion durch Dexamethason fand sich eine schwache K orrelation zwischen Renin-Aktivität und Aldosteron (r=0.517,p〈0.05). Unsere Ergebnisse zeigen, daß sowohl vor als auch nach 9-monatiger Behandlung mit Spironolacton die episodische Sekretion des Plasma-Aldosterons bei einer Patientin mit einem aldosteronproduzierenden Nebennierenrindenadenom durch ACTH gesteuert wird. Demagegenüber besitzt endogenes Angiotensin II keinen oder einen nur geringen Einfluß auf die Aldosteron-Sekretion.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 9 (1975), S. 62-66 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 263 (1975), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 106 (1975), S. 203-211 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The mass spectra of the pyrrolidides of some long-chain carboxylic acids with alicyclic residues attached to their ω-end are discussed and compared with the spectra of the corresponding esters. Fragmentation triggered by the pyrrolidide group generates a series of peaks, which clearly exhibits the size and the structure of the carbon chain.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of environmental contamination and toxicology 13 (1975), S. 40-43 
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 19 (1975), S. 127-135 
    ISSN: 1432-1254
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract After a 2 week control period at 400 m, cattle were exposed to 5,000 m simulated altitude for 2 weeks, which was followed by a 2-week post-altitude control period. Plasma cortisol values from blood samples taken every 30 min for a total of 24 h indicated that cortisol was secreted episodically and that a circadian rhythm existed. When cortisol values were grouped into 4, 6-h periods, plasma cortisol was most abundant from 06:00 to 12:00 h with an average of 0.96µ g/100 ml and least abundant from 00:30 to 06:00 h with an average of 0.55µ g/100 ml. Plasma cortisol increased from 0.42 to 3.08µ g/100 ml during the 4 h ascent to 5,000 m and decreased to near normal levels the following day. A rhythmic plasma cortisol pattern was maintained after one day at simulated high altitude.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Manuscripta mathematica 14 (1975), S. 337-348 
    ISSN: 1432-1785
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Let R be a noetherian ring of dimension d and M a finitely generated R-module of homologic dimension less or equal to one. Assume further that M has a rank r, which equals d or (in case d〉0) d−1 and that the r-th Fitting-ideal $$\vartheta _r (M)$$ of M has grade ⩾d. Then the torsion-submodule of the d-th exterior power of M and the module $$R/\vartheta _r (M)$$ are equivalent.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Manuscripta mathematica 17 (1975), S. 317-325 
    ISSN: 1432-1785
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We generalize a theorem of Bourbaki: Let R be a noetherian ring and M a finitely generated torsionfree R-module with rank r. Assume further M to be free for all ∈ Spec R with depth ⩽ 1. Then there exists a free submodule F in M such that M/F is isomorphic to an ideal in R. There are some applications due to E.G.Evans,Jr. and M. Auslander, concerning the group Ko (R) resp. reflexive R-modules and - in case R is Gorenstein - R-modules of finite length.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...