GLORIA

GEOMAR Library Ocean Research Information Access

X
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
  • Hypertension  (12)
  • Essential hypertension  (9)
  • Springer  (21)
  • 1
    Electronic Resource
    Electronic Resource
    Rare forms of renal hypertension (1981)
    Springer
    Journal of molecular medicine 59 (1981), S. 35-45 
    Details
    ISSN: 1432-1440
    Keywords: Renal artery aneurysm ; Renal cyst ; Hydronephrosis ; Coarctation of the aorta ; Radiation nephritis ; Hypertension ; Renin angiotensin system ; Nierenarterienaneurysma ; Nierencyste ; Hydronephrose ; Coarctatio aortae ; Strahlennephritis ; Hypertonie ; Renin-Angiotensin-System
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In der vorliegenden Studie wurden 19 Patienten mit seltenen Formen renaler Hypertonie untersucht: 6 Patienten mit Nierenarterienaneurysma, 6 Fälle mit unilateraler Hydronephrose, 4 Patienten mit unilateraler Nierencyste, 2 Fälle mit Coarctatio aortae und assozierter Nierenarterienstenose und ein Patient mit Strahlennephritis. Die Plasma-Renin-Aktivität (PRA) im Nierenvenenblut wurde bei 17 der 19 Fälle bestimmt. 7 dieser 17 (41%) Patienten zeigten einen signifikanten Seitenunterschied (PRA betroffene/PRA nicht betroffene Seite) ≧1,5. Der Prozentsatz positiver Tests war in verschiedenen Kollektiven vergleichbar hoch. Nur Patienten mit unilateraler Nierencyste zeigten in keinem Fall einen signifikanten PRA-Quotienten. Eine superselektive Nierenvenenrenin-Bestimmung bei 2 Patienten mit Nierenarterienaneurysma der oberen Segmentarterie zeigte in beiden Fällen eine erhöhte Plasma-Renin-Aktivität im Bereiche des Oberpols. 15 der 19 Patienten (79%) wurden operiert. Dabei kamen entweder plastisch rekonstruktive Verfahren oder eine Nephrektomie zur Anwendung. 4 Fälle mit Nierenarterienaneurysma wurden antihypertensiv behandelt. Patienten mit unilateraler Hydronephrose zeigten postoperativ die besten Ergebnisse (3 geheilt, 3 gebessert), während bei keinem der 4 Patienten mit unilateraler Nierencyste die Blutdruckwerte durch den operativen Eingriff normalisiert werden konnten (3 gebessert, 1 nicht gebessert). Die Patienten mit Coarctatio aortae und assozierter Nierenarterienstenose sowie die 2 operierten Fälle mit Nierenarterienaneurysma zeigten alle ein gutes Ansprechen auf den gefäßrekonstruktiven Eingriff (2 geheilt, 2 gebessert). Der Patient mit Strahlennephritis schließlich war 2 Jahre nach Nephrektomie gebessert. Im Gesamtkollektiv unserer operierten Patienten war die prognostische Aussagekraft der Nierenvenenreninbestimmung beschränkt. Allerdings erwies sich die selektive Nierenvenenreninbestimmung bei Patienten mit einem Aneurysma einer Nierensegmentarterie als nützlich zur Entdeckung lokaler Reninüberproduktion.
    Notes: Summary In the present study 19 patients with rare forms of renal hypertension were investigated: 6 patients with renal artery aneurysm, 6 cases with unilateral hydronephrosis, 4 patients with unilateral simple renal cyst, 2 cases with coarctation of the abdominal aorta and associated renal artery stenosis and 1 patient with radiation nephritis. Renal venous renin activity (PRA) was determined in 17 of the 19 cases. Seven of these 17 (41%) patients showed significant PRA-ratios (PRA affected/PRA unaffected side ≧1.5). The percentage of positive tests was comparably high in the various subgroups except in patients with renal cyst, none of them showing lateralisation of renin secretion. Selective sampling in 2 patients with renal artery branch aneurysm revealed in both cases marked local renin oversecretion. Fifteen of the 19 patients (79%) were operated either by reconstruction surgery or nephrectomy. Four cases with a renal artery aneurysm were treated with antihypertensive drugs. Patients with unilateral hydronephrosis showed the best response to surgery in terms of cure rate (3 cured, 3 improved), whereas blood pressure normalisation could not be achieved in patients with simple renal cyst (2 improved, 1 unimproved). Patients with coarctation of the abdominal aorta and associated renal artery stenosis and the 2 operated cases with renal artery aneurysm showed a good effect of corrective surgery (2 cured, 2 improved). The patient with radiation nephritis finally was improved 2 years after nephrectomy. For the total group the prognostic validity of renal venous renin determination was limited. However, selective blood sampling from peripheral renal veins may be useful in cases with renal artery branch aneurysm to detect local oversecretion of renin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01477328
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Long-term effect of captopril on kidney function in various forms of hypertension (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 731-737 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01725707
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Transdermal clonidine application: Long-term results in essential hypertension (1984)
    Springer
    Journal of molecular medicine 62 (1984), S. 925-930 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01727445
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Obesity, hypertension and intracellular electrolytes (1983)
    Springer
    Journal of molecular medicine 61 (1983), S. 803-805 
    Details
    ISSN: 1432-1440
    Keywords: Obesity ; Hypertension ; Intracellular sodium ; Intracellular calcium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracellular activities of sodium and calcium were determined in red cells of patients with obesity. Compared to normal people mean intracellular sodium and calcium were higher in obese patients. However, increased intracellular sodium and calcium could only be observed in those patients with obesity suffering from hypertension or showing a familial disposition to hypertension. In contrast there was no difference in intracellular sodium and calcium between obese normotensives lacking a familial disposition to hypertension and normal people. Thus, our results suggest, that the observed variations in intracellular sodium and calcium in obesity are due to an enhanced blood pressure or a familial disposition to hypertension and not specific for obesity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01496724
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Age- and sex-related differences in plasma aldosterone in essential hypertension. Relationship to plasma renin activity (1979)
    Springer
    Journal of molecular medicine 57 (1979), S. 445-449 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01477497
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    The effect of saralasin (1-Sar-8-Ala-Angiotensin II) on blood pressure in patients with cushing's syndrome (1976)
    Springer
    Journal of molecular medicine 54 (1976), S. 661-663 
    Details
    ISSN: 1432-1440
    Keywords: Cushing-Syndrom ; Hypertonie ; Renin-Aktivität ; Aldosteronismus ; Cushing's syndrome ; Hypertension ; Renin activity ; Aldosteronism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary To investigate the role of the renin angiotensin system in the pathogenesis of hypertension in Cushing's syndrome two patients with hypercorticism were infused with 20 mg saralasin (1-sar-8-alaangiotensin II) over a period of 30 minutes under constant blood pressure control. In addition, one patient with primary aldosteronism, an established form of mineralocorticoid hypertension, served as control. Neither in the two patients with Cushing's syndrome nor in the patient with primary aldosteronism could a blood pressure lowering effect of saralasin be observed. In the two patients with hypercorticism both renin activity and plasma aldosterone increased during saralasin infusion. The patient with primary aldosteronism only showed a weak increase in plasma aldosterone concentration. These results seem to exclude an important role of the renin angiotensin system in the pathogenesis of hypertension in Cushing's syndrome. The unresponsiveness of elevated blood pressure to saralasin in the two patients with hypercorticism and in the patient with primary aldosteronism indirectly supports the assumption that in patients with Cushing's syndrome increased mineralocorticoid activity may be the main factor in the pathogenesis of hypertension.
    Notes: Zusammenfassung Um die Bedeutung des Renin-Angiotensin Systems in der Pathogenese der Hypertonie bei Cushing-Syndrom zu untersuchen, wurden bei 2 Patienten mit Hyperkortizismus 20 mg Saralasin (1-Sar-8-Ala-Angiotensin II) über einen Zeitraum von 30 min unter ständiger Blutdruckkontrolle infundiert. Zusätzlich diente ein Patient mit primärem Aldosteronismus, einer etablierten Form von Mineralokortikoidhochdruck, als Kontrolle. Weder bei den 2 Patienten mit Cushing-Syndrom noch bei dem Patienten mit primärem Aldosteronismus ließ sich ein blutdrucksenkender Effekt des Saralasins nachweisen. Die beiden Patienten mit Hyperkortizismus zeigten unter Saralasin sowohl einen Anstieg der Renin-Aktivität als auch des Plasmaaldosterons. Bei dem Patienten mit primärem Aldosteronismus ließ sich nur ein geringgradiger Anstieg der Plasmaaldosteronkonzentration nachweisen. Diese Ergebnisse sprechen gegen eine wichtige Rolle des Renin-Angiotensin Systems in der Pathogenese der Hypertonie bei Cushing-Syndrom. Die Unbeeinflußbarkeit des Hochdrucks durch Saralasin bei den beiden Patienten mit Hyperkortizismus und dem Patienten mit primärem Aldosteronismus stützen indirekt die Annahme, daß bei Patienten mit Cushing-Syndrom eine erhöhte Mineralokortikoidaktivität der Hauptfaktor in der Pathogenese der Hypertonie ist.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01469145
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Morning versus evening administration of nifedipine gastrointestinal therapeutic system in the management of essential hypertension (1994)
    Springer
    Journal of molecular medicine 72 (1994), S. 864-869 
    Details
    ISSN: 1432-1440
    Keywords: Nifedipine gastrointestinal therapeutic system ; Essential hypertension ; Ambulatory blood pressure measurement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The nifedipine gastrointestinal therapeutic system (GITS) is a recently developed controlled-release formulation for once-a-day dosing. We evaluated the influence of morning versus evening administration of the drug in a randomized double-blind cross-over study including 15 essential hypertensives. Five patients had to be excluded from blood pressure analysis because of noncompliance (three cases) or intolerable side effects (two cases). To assess the exact duration of the antihypertensive efficacy noninvasive automatic ambulatory blood pressure monitoring was performed. After a placebo period patients were given 30 mg nifedipine GITS either at 1000 or 2200 hours. Twenty-four-hour systolic and diastolic blood pressure profiles documented a sustained antihypertensive effect of both nifedipine regimens throughout the whole period without affecting the circadian rhythm. Statistical analysis revealed no significant difference between morning and evening administration. Two patients stopped their medication because of intolerable side effects (fatigue and muscle cramps, respectively). Two more cases suffered from mild reversible headache which provoked no discontinuation of the drug. In conclusion our results document a sustained antihypertensive efficacy of 30 mg nifedipine GITS in patients with moderate essential hypertension. Time of administration has no impact on day- and nighttime blood pressure control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190742
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Weight reduction and salt restriction in hypertension: Effects on blood pressure and intracellular electrolytes (1986)
    Springer
    Journal of molecular medicine 64 (1986), S. 1183-1185 
    Details
    ISSN: 1432-1440
    Keywords: Salt restriction ; Weight reduction ; Hypertension ; Intracellular electrolytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 16 essential hypertensives on a program of energy restriction (800 kcal/day) with and without simultaneous salt restriction, the effects on blood pressure and intracellular Na+ and Ca2+ in red blood cells were studied. A decrease in blood pressure and intracellular free Na+ and Ca2+ was only observed in the cases of simultaneous energy and salt restriction. The beneficial effect of weight reduction in hypertension thus depends on a diminished salt intake and is probably mediated by changes in intracellular free Ca2+.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01728458
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Platelet Na+/H+ antiport activity in patients with insulin-dependent diabetes mellitus with and without diabetic nephropathy (1993)
    Springer
    Journal of molecular medicine 71 (1993), S. 119-125 
    Details
    ISSN: 1432-1440
    Keywords: Na+/H+ antiport ; Hypertension ; Diabetic nephropathy ; Hereditary factors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The incidence of diabetic nephropathy in patients with insulin-dependent diabetes mellitus (IDDM) may depend on factors other than the quality of diabetes control. Hypertension is an additional factor associated with a high degree of renal involvement in IDDM. One abnormality consistantly observed in various tissues of patients with essential hypertension is enhanced activity of the Na+/H+ antiport. In the present study we have therefore studied platelet antiport activity in 41 healthy subjects (control), in 22 patients with untreated essential hypertension (EH), and in 35 normotensive IDDM patients (type 1). Of these patients 17 exhibited signs of diabetic nephropathy (group 1) while 18 had no evidence for renal involvement of IDDM in spite of a duration of IDDM of at least 10 years (group 2). The two IDDM patient groups were undistinguishable with respect to age, body mass index, and arterial blood pressure (group 1, 117.9±2.4/78.4±1.5 mmHg; group 2, 113.9±3.6/76.1±1.8 mmHg). Antiporter activity was determined from the rate of cell volume changes induced by propionic acid. Platelet Na+/H+ exchange activity averaged 23.43±0.43 10−3·s−1 in control subjects and was markedly elevated in EH (28.38±0.62 10−3·s−1 P〈0.01). Antiport activity in group 2 patients without nephropathy averaged 24.54±0.57 10−3·s−1 and was undistinguishable from the control group. However, platelet Na+/H+ antiport activity was significantly stimulated in group 1 patients with nephropathy as compared to group 2(26.95±0.73 10−3. s−1 ; P〈0.025). Our results show that renal involvement in IDDM is associated with enhanced activity of the platelet Na+/H+ antiport.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00179992
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Characterization of angiotensin receptors on human skin fibroblasts (1997)
    Springer
    Journal of molecular medicine 75 (1997), S. 217-222 
    Details
    ISSN: 1432-1440
    Keywords: Key words Angiotensin II ; Human skin fibroblasts ; Hypertension ; Arteriosclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Angiotensin II is involved in blood pressure regulation, cell growth and angioneogenesis. The angiotensin receptors which mediate the intracellular effects of angiotensin II are expressed in numerous tissues and cell types. We studied the expression of angiotensin II receptors in cultured human skin fibroblasts derived from a skin biopsy. Angiotensin II binding characteristics were analyzed by radioligand binding assays. The DNA synthesis was assessed by [H]thymidine incorporation assays. Intracellular calcium concentrations were measured by fura-2 spectrofluorometry, and mRNA expression levels were analyzed by northern blot technology. Two distinct angiotensin receptors were detectable on human skin fibroblasts: the AT1 receptor with K d=1.0± 0.7 nmol/l and B max=17.9±0.9 fmol/mg protein, and an angiotensin(1–7) binding site with K d=26±6.6 nmol/l and B max=80.4±3.5 fmol/mg protein, as shown by competition binding assays using selective angiotensin II receptor antagonists and the heptapeptide angiotensin(1–7). The angiotensin AT1 receptor mRNA was substantially expressed in human skin fibroblasts and was subjected to homologous downregulation. In human skin fibroblasts angiotensin II caused a profound increase in intracellular calcium which was blocked by angiotensin AT1 receptor antagonists such as Exp-3174. Furthermore, both angiotensin II and angiotensin(1–7) led to increased DNA synthesis in human skin fibroblasts. In conclusion, cultured human skin fibroblasts express angiotensin AT1 receptors and a putatively new angiotensin receptor activated by angiotensin(1–7), both coupled to signaling pathways involved in DNA synthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001090050106
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...