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
Filter
  • Articles  (22)
  • Aldosteron  (9)
  • Essential hypertension  (9)
  • Sarcoplasmic reticulum  (5)
  • 1
    ISSN: 1432-1440
    Keywords: Captopril ; Kidney function ; Essential hypertension ; Renovascular hypertension ; Renal parenchymatous hypertension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To study long-term effects of captopril on renal function in patients with various forms of severe hypertension, serum creatinine values were monitored in 76 patients under captopril therapy over a period of up to 3 years. Three different groups were formed: (1) patients with essential hypertension (n=37); (2) patients with renovascular hypertension (n=20); (3) patients with renal parenchymatous hypertension (n=19). In each of the three groups reduction in blood pressure was accompanied by increases in serum creatinine. However, both changes were more pronounced in patients with renovascular hypertension. In this group only the rise in creatinine was statistically significant and showed a slight progression with duration of captopril treatment. Group specific analysis revealed that the increase was smaller in patients with unilateral (n=16) renovascular disease than in those with bilateral (n=4) involvement, but in the former it was still significantly higher than in patients with essential or renal parenchymatous hypertension. Separation of patients according to the underlying disease of renovascular hypertension showed that renal function deteriorated less in patients with arteriosclerotic origin (n=10) than in those with fibromuscular dysplasia (n=8). Statistical evaluation of subjects with renovascular and essential hypertension still revealed significant differences in creatinine when the patients with initial plasma renin activity (PRA) below and above 6 ng/ml·3 h were compared separately. A significant correlation (r=0.73;P〈0.05) between blood pressure reduction and creatinine changes was obtained only for patients with renovascular hypertension. Finally, in all three groups of patients creatinine changes were statistically independent from daily dosages of captopril. From these data we conclude that sustained impairment of kidney function by captopril is mainly restricted to patients with renovascular hypertension and possibly results from the combined effects of low renal perfusion pressure and interference with intrarenal regulation of glomerular filtration rate by a postulated angiotensin-II-mediated mechanism.
    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 62 (1984), S. 925-930 
    ISSN: 1432-1440
    Keywords: Transdermal therapeutic systems (TTS) ; Clonidine ; Essential hypertension ; Skin allergy ; Clonidine allergy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Skin patches of a clonidine transdermal therapeutic system (clonidine-TTS) with a constant release rate of either 0.1 or 0.2 mg clonidine/24 h continuously over 7 days were used in 32 essential hypertensives. These self-adhesive drug delivery systems (3.5 cm2), which were affixed to the upper outer arm, were changed by the patients at weekly intervals. During a mean observation period of 7 months (range 1–19 months) transdermal clonidine reduced the blood pressure from 162±15/107±5 mmHg to normal values (diastolic ≦95 mmHg) in 63% of our patients. However, chronic use of clonidine-TTS was accompanied by a high frequency of contact dermatitis (type IV allergy) in nearly half of our patients (n=15, 47%). In 11 of these 15 patients transdermal clonidine administration had to be stopped because of intolerable local skin reactions (pruritus, erythema, vesiculation, and/or infiltration). Subsequent patch testing with all components of clonidine-TTS was performed in eight cases. Whereas in seven cases an allergic contact dermatitis to clonidine was found, only one patient showed an allergy to another component of clonidine-TTS (polyisobutylene). We conclude that this strikingly high incidence of local allergic skin reactions limits the use of clonidine-TTS in essential hypertension.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1432-1440
    Keywords: Aldosteron ; Renin-Angiotensin ; Essentielle Hypertonie ; Aldosterone ; Renin-angiotensin ; Essential hypertension
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary In essential hypertension mean basal (supine) and stimulated plasma renin activity (2 h upright posture +40 mg furosemide intraveneously) decreased progressively with age. No significant differences were observed in renin levels between male and female patients. With increasing age mean basal (supine) plasma aldosterone remained almost unchanged in females, whereas in males a slight increase was found. However, in the comparable age-groups no significant sexrelated differences were obtained. In female patients changes in mean stimulated plasma aldosterone with increasing age paralleled those of plasma renin activity, whereas in males this relationship was less obvious: only a slight age-related decline in stimulated aldosterone levels was observed and significantly lower plasma aldosterone concentrations in male than in female hypertensives of the younger age-groups (〈40 years) were found. The results indicate that in essential hypertension with increasing age dissociation between plasma aldosterone and plasma renin activity occurred. Furthermore, the described alterations in adrenal aldosterone release are more pronounced in male than in female patients.
    Notes: Zusammenfassung Bei Patienten mit essentieller Hypertonie fiel sowohl die basale als auch die stimulierte Plasmareninaktivität (2 h aktive Orthostase +40 mg Furosemid intravenös) mit zunehmendem Lebensalter kontinuierlich ab. Signifikante Unterschiede zwischen Männern und Frauen fanden sich nicht. Die mittlere basale Plasmaaldosteronkonzentration zeigte bei weiblichen Patienten keine altersabhängigen Veränderungen, während bei männlichen Patienten ein leichter Anstieg festgestellt werden konnte. Allerdings ergaben sich hier keine signifikanten Geschlechtsunterschiede in den vergleichbaren Altersgruppen. Die mittlere stimulierte Plasmaaldosteronkonzentration zeigte bei Frauen mit zunehmendem Alter ein der Plasmareninaktivität paralleles Verhalten, während dies bei Männern weit weniger ausgeprägt war; so fand sich bei männlichen Patienten nur ein geringer Abfall der mittleren stimulierten Plasmaaldosteronkonzentration mit dem Alter und die Aldosteronspiegel waren in den jüngeren Altersgruppen (〈40 Jahre) signifikant niedriger als bei weiblichen Patienten. Die Ergebnisse zeigen, daß bei Patienten mit essentieller Hypertonie mit zunehmendem Lebensalter eine Dissoziation zwischen Plasmaaldosteron und Plasmareninaktivität auftritt, wobei dieser Befund bei Männern deutlicher ausgeprägt ist als bei Frauen.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 52 (1974), S. 719-721 
    ISSN: 1432-1440
    Keywords: Aldosterone ; renin ; pheochromocytoma ; Aldosteron ; Renin ; Phaechromocytom
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Sieben von 8 Patienten mit einem Phäochromocytom zeigten eine über die Norm erhöhte Plasma-Renin-Aktivität (〉3 ng/ml/3 h). Bei 4 der 7 Patienten mit Hyperreninismus konnte gleichzeitig auch ein abnorm hohes Plasma-Aldosteron nachgewiesen werden (〉120 pg/ml). Seitengetrennte Bestimmungen der Plasma-Renin-Aktivität im Nierenvenenblut zweier Patienten zeigten, daß als Ursachen des Hyperreninismus sowohl eine Verringerung der Nierendurchblutung durch Tumorkompression im Sinne eines Goldblattmechanismus als auch eine Stimulation der renalen Reninsekretion durch Katecholamine in Frage kommen können. Bei 2 unserer Patienten mit einem Phäochromocytom fand sich eine über die Norm gesteigerte Cortisolsekretion.
    Notes: Summary Seven of eight patients with pheochromocytoma showed elevated plasma renin activity (〉3 ng/ml/3 hr). Four of these seven patients simultaneously had abnormally high plasma aldosterone (〉120 pg/ml). It was found by selective determinations of plasma renin activity in both renal veins that two different mechanisms may be responsible for the observed hyperreninism. Firstly, the pheochromocytoma can lead mechanically to a reduction in renal blood flow inducing an increased renin secretion. Secondly, catecholamines are known to stimulate renin secretion. Two of the eight patients with pheochromocytoma showed an increased cortisol secretion.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    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 ...
  • 6
    ISSN: 1432-1440
    Keywords: Primärer Aldosteronismus ; Aldosteron ; Nebenniere ; Primary aldosteronism ; Aldosterone ; Adrenal gland
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The diagnostic validity of adrenal isotopic scanning, adrenal venous aldosterone, adrenal phlebography and computed abdominal tomography (CT) was studied in 44 patients with primary aldosteronism. In all patients the diagnosis was confirmed by surgery (unilateral adrenal adenoman=32, bilateral adrenal hyperplasian=12). Both adrenal scintiscan, adrenal venous aldosterone and CT allowed in a comparable high percentage of patients (71%) the exact classification of the adrenal lesion(s), whereas adrenal phlebography could distinguish adenoma from hyperplasia in 57%. Marked differences between the lateralization procedures, however, were observed in predicting incorrect preoperative identification: adrenal scintiscan 29%, adrenal venous aldosterone 3%, adrenal venography 6% and CT 0%. Finally, the percentage of patients in whom no differentation between the two main subgroups of primary aldosteronism could be obtained varied between 0% with adrenal isotopic scanning and 37% with adrenal phlebography (CT 29% and adrenal venous aldosterone 26%). Both scientiscan and adrenal venous aldosterone were not improved by the administration of dexamethasone. Our findings document that adrenal venous aldosterone determinations, adrenal isotopic scanning and computed tomography are equally valid in differentiating unilateral adenoma from bilateral adrenal hyperplasia in primary aldosteronism. However, adrenal scientiscan is hampered by a relative high percentage of incorrect results independant whether dexamethasone was used or not. Contrary, adrenal venous aldosterone and computed tomography seemed to have no or only a minor risk in assuming an incorrect classification of the adrenal lesion(s).
    Notes: Zusammenfassung Bei 44 Patienten mit primärem Aldosteronismus wurde die diagnostische Wertigkeit der seitengetrennten Aldosteronbestimmung im Nebennierenvenenblut, der Nebennierenphlebographie, der Nebennierenszintigraphie sowie der Computer-Tomographie untersucht. Bei allen Patienten wurde die Diagnose chirurgisch gesichert bzw. bestätigt (unilaterales Nebennierenrindenadenomn=32, bilaterale Nebennierenrindenhyperplasien=12). Sowohl die seitengetrennte Aldosteronbestimmung im Nebennierenvenenblut als auch die Nebennierenszintigraphie und die Computer-Tomographie erlaubten in einem vergleichbar hohen Prozentsatz (71%) die exakte Klassifizierung der Nebennierenrindenläsion(en), während die Nebennierenphlebographie in etwa 57% zwischen unilateralem Adenom und bilateraler Hyperplasie unterscheiden konnte. Deutliche Unterschiede ergaben sich jedoch in bezug auf eine inkorrekte präoperative Differenzierung: Nebennierenszintigraphie 29%, Nebennierenvenenaldosteron 3%, Nebennierenphlebographie 6% und Computer-Tomographie 0%. Der Prozentsatz der Patienten, bei denen aufgrund der Untersuchung keine Differenzierung zwischen den beiden Hauptgruppen des primären Aldosteronismus getroffen werden konnte, schwankte zwischen 0% bei Szintigraphie und 37% bei der Phlebographie (Nebennierenvenenaldosteron 26% und Computer-Tomographie 29%). Die Aussagefähigkeit sowohl der Szintigraphie als auch der Aldosteronbestimmung im Nebennierenvenenblut konnte durch die zusätzliche Gabe von Dexamethason nicht verbessert werden. Unsere Ergebnisse zeigen, daß beim primären Aldosteronismus die Aldosteronbestimmung im Nebennierenvenenblut, die Nebennierenszintigraphie sowie die Computer-Tomographie in ihrer diagnostischen Wertigkeit zur Differenzierung zwischen unilateralem Adenom und bilateraler Hyperplasie vergleichbar gut sind. Die Nebennierenszintigraphie ist jedoch durch einen relativ hohen Prozentsatz an falscher Klassifizierung der Nebennierenrindenläsion(en) belastet. Demgegenüber scheint sowohl die Aldosteronbestimmung im Nebennierenvenenblut als auch die Computer-Tomographie nur ein geringes Risiko an inkorrekter Differenzierung zwischen Adenom und Hyperplasie zu besitzen.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1067 (1991), S. 9-16 
    ISSN: 0005-2736
    Keywords: Anion binding ; NMR, ^3^5Cl- ; Pyridoxalphosphate-6-azophenyl-2'-sulfonic acid ; Pyridoxalphosphate-6-azophenyl-4'-nitro-2'-sulfonic acid ; Sarcoplasmic reticulum ; Vanadate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 945 (1988), S. 11-16 
    ISSN: 0005-2736
    Keywords: 4,4'-Diisothiocyanostilbene-2,2'-disulfonic acid ; Anion binding site ; NMR, ^3^5Cl- ; Pyridoxalphosphate-6-azophenyl-2'-sulfonic acid ; Sarcoplasmic reticulum
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Molecular and Cellular Cardiology 18 (1986), S. 1267-1275 
    ISSN: 0022-2828
    Keywords: (Na, K)ATPase ; Ca uptake ; Na-Ca exchange ; Ontogenesis ; Sarcolemma ; Sarcoplasmic reticulum
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    FEBS Letters 155 (1983), S. 326-330 
    ISSN: 0014-5793
    Keywords: Ca^2^+-transport ; Cardiac muscle ; Ontogenesis ; Phospholamban ; Protein kinase ; Sarcoplasmic reticulum
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    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...