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  • Springer  (25)
  • Institute of Physics Publishing (IOP)
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  • Oxford University Press
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  • 1995-1999  (18)
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  • 1995  (18)
  • 1979  (7)
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  • 2010-2014
  • 1995-1999  (18)
  • 1990-1994
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  • 1
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Renovaskuläre Hypertonie (1979)
    Springer
    Journal of molecular medicine 57 (1979), S. 863-873 
    Details
    ISSN: 1432-1440
    Keywords: Renovascular hypertension ; Renal venous renin activity ; Effect of surgery ; Renovaskuläre Hypertonie ; Nierenvenenreninaktivität ; Operationserfolg
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung In der vorliegenden Untersuchung wurde das postoperative Blutdruckverhalten bei 35 Patienten mit renovaskulärer Hypertonie untersucht: 17 Patienten mit fibromuskulärer Dysplasie (FMD) und 18 mit arteriosklerotischen Gefäßwandveränderungen (ASS). Patienten mit FMD waren im Mittel jünger (31,8 Jahre), zeigten eine kürzere Hypertonieanamnese (1,8 Jahre) und waren prävalent weiblich (82%), während Patienten mit ASS deutlich älter waren (48,2 Jahre), eine längere Hypertoniedauer (2,6 Jahre) zeigten und bevorzugt männlich (78%) waren. In beiden Gruppen zeigte das intravenöse Pyelogramm einen vergleichbar hohen Anteil positiver Befunde (FMD=64%, ASS=61%). Postoperativ waren in der Gruppe mit FMD 47% (n=8) geheilt, 47% (n=8) gebessert und nur 6% (n=1) der Patienten geringgradig gebessert. Die vergleichbaren Werte für die Gruppe mit ASS betrugen 28, 55 und 17%. Für das Gesamtkollektiv war folglich ein guter Operationserfolg (geheilt und gebessert) in 88,5% der Fälle zu beobachten. Patienten mit ASS und postoperativ nur geringgradiger Besserung (n=3) zeigten eine auffallend lange Hypertonieanamnese (7,0±1,4 Jahre). Bei allen Patienten wurde präoperativ die seitengetrennte Bestimmung der Renin-Aktivität (PRA) im Nierenvenenblut durchgeführt und aus den Werten die PRA-Quotienten (PRA betroffene/nicht betroffene Seite) errechnet. Bei 27 Patienten wurde die Bestimmung 15 und 30 min nach intravenöser Stimulation mit 40 mg Furosemid wiederholt. PRA-Quotienten von ≧1,5 wurden als signifikant bezeichnet. Bei 31 Patienten mit einseitiger renovaskulärer Hypertonie wurde die Höhe des PRA-Quotienten zum postoperativen Blutdruckverhalten korreliert. Dabei zeigte sich zwischen der Gruppe der postoperativ Geheilten und der der postoperativ Gebesserten kein signifikanter Unterschied im mittleren PRA-Quotienten. Ferner ließen sich für das Gesamtkollektiv der 31 Patienten mit einseitiger renovaskulärer Hypertonie unter Ausgangs- und Stimulationsbedingungen keine signifikanten Korrelationen zwischen Höhe der PRA-Quotienten und postoperativem Blutdruckabfall ermitteln. Unsere Ergebnisse unterstützen nicht die weit verbreitete Ansicht, daß sich die seitengetrennte Bestimmung der PRA im Nierenvenenblut als Parameter für den zu erwartenden Operationserfolg bei Patienten mit einseitiger renovaskulärer Hypertonie eignet. Die Methode kann deshalb nach unserer Ansicht nicht mehr als obligater Bestandteile der präoperativen Diagnostik der renovaskulären Hypertonie empfohlen werden.
    Notes: Summary In the present study the effect of surgery on blood pressure was investigated in 35 patients with renovascular hypertension: 17 patients with fibromuscular hyperplasia (FMD) and 18 with atherosclerosis (ASS) of the renal artery. Patients with FMD were younger (31,8 years), showed a shorter duration of hypertension (1.8 years) and were prevalently female (82%), whereas patients with ASS were markedly older (48.2 years), showed a longer duration of hypertension (2.6 years) and were most often male (78%). In both groups of patients the intravenous urogram was positive in a comparable high percentage (FMD=64%, ASS=61%). Following surgical intervention 47% (n=8) of the 17 patients with FMD were cured, 47% (n=8) were improved and only 6% (n=1) showed insufficient reduction of blood pressure values. In ASS the respective values were 28, 55 and 17%. Consequently a good effect of surgery (cured and improved) was observed in 88.5% of all patients. Patients with ASS who failed to respond to surgery (n=3) showed a remarkable long duration of hypertension (7.0±1.4 years). Plasma renin activity (PRA) was determined preoperatively in both renal veins in all 35 patients. From these values the PRA-ratio (PRA affected/unaffected side) was calculated. In 27 patients PRA determinations were repeated following (15 and 30 min) intravenous injection of 40 mg furosemide. PRA-ratios of ≧1.5 were considered to be significant. In 31 patients with unilateral renovascular hypertension PRA-ratios were correlated to the postoperative blood pressure reduction. No significant differences in mean PRA-ratios were observed between cured and improved patients. Furthermore, for the total group of 31 patients no significant correlations were obtained between PRA-ratios and postoperative blood pressure reduction. Our results do not support the widespread opinion that PRA determinations in both renal veins are useful to predict the effect of surgery in patients with unilateral renovascular disease. Therefore, from our experience this method should not be recommended as obligatory in the diagnostic work-up of renovascular hypertension.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01477025
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  • 3
    Electronic Resource
    Electronic Resource
    Chemische Zusammensetzung von Samen und Samenschale der Ackerbohne (Vicia faba L.) (1995)
    Springer
    European food research and technology 200 (1995), S. 229-232 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Verschiedene chemische Bestandteile des Samens und der Samenschale der Ackerbohne (Vicia faba L.) wurden untersucht. Die Samen enthalten einen relativ hohen Roheiweiß- (27,5%), niedrigen Rohfett(3,36%) und Ligningehalt (2,65%). Die Samenschale hat eine hohe Faserkonzentration und ist eine bedeutende Ca-Quelle (1,86 g/kg TM). Die höchsten Makroelementkonzentrationen wurden aus Kalium, Phosphor und Magnesium registriert. Die Hauptmikroelemente (Fe, Mn, Cu, Zn) kommen in bedeutend höheren Konzentrationen in den Samen als in der Samenschale vor. Die Aminosäurezusammensetzung der Samen ist positiv (verglichen zu weißer Lupine), das Verhältnis der essentiellen Aminosäuren ist gut. Die Konzentrationen der untersuchten antinutritiven Stoffe, besonders der Alkaloide, sind niedrig. Auf Grund der angeführten chemischen Untersuchungen ist diese Pflanze eine der wertvollsten Hülsenfrüchte; der Anbau und die Verwendung der Samen scheint zukunftsreich zu sein.
    Notes: Abstract Different chemical components were analysed in the seeds and in testa ofVicia faba. The seeds contain a relativ high crude protein (27,5%), a low crude fatt (3,36%) content; and the lignin concentration is low (2,65%). The testa of the seeds has a very high fibre concentration and is a significant Ca-source (1,86 g/kg). The higher macroelement concentrations in the seeds were measured from K, P and Mg. The main microelements (Fe, Mn, Cu, Zn) have significant higher concentrations in the seed than in the testa. The amino acid composition of seeds is positiv (compared to data of white lupine), the rate of essentiell amino acids is good. The concentrations of the examined antinutritiv organic constituents, especially of alkaloids, are low. On the basis of chemical analysis, the production and utilisation of seeds ofVicia faba is recommended.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01190501
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  • 4
    Electronic Resource
    Electronic Resource
    Alarm pheromone perception in honey bees is decreased by smoke (Hymenoptera: Apidae) (1995)
    Springer
    Journal of insect behavior 8 (1995), S. 11-18 
    Details
    ISSN: 1572-8889
    Keywords: honey bee ; Apis mellifera ; alarm pheromone ; electroantennograph
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The application of smoke to honey bee(Apis mellifera) antennae reduced the subsequent electroantennograph response of the antennae to honey bee alarm pheromones, isopentyl acetate, and 2-heptanone. This effect was reversible, and the responsiveness of antennae gradually returned to that of controls within 10–20 min. A similar effect occurred with a floral odor, phenylacetaldehyde, suggesting that smoke interferes with olfaction generally, rather than specifically with honey bee alarm pheromones. A reduction in peripheral sensitivity appears to be one component of the mechanism by which smoke reduces nest defense behavior of honey bees.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990966
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  • 5
    Electronic Resource
    Electronic Resource
    Lifetime of the two-phonon vibrational state in232Th (1995)
    Springer
    The European physical journal 351 (1995), S. 143-147 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Re ; 21.60.Ev ; 23.20.Lv ; 27.90. + b
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We report on a measurement of the lifetime of the 1414 keV state in232Th by the Doppler-shift recoil-distance method. This 4+ state shows all characteristics of a nearly-harmonic two-phononγ-vibrational excitation. The result for the B(E2) value obtained from the lifetime,τ=3.2 ± 0.7 ps, is in agreement with an earlier estimate of the collectivity from Coulomb-excitation yields and supports the interpretation of the 1414 keV state as a two-phononγ-vibrational excitation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289524
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  • 6
    Electronic Resource
    Electronic Resource
    Electron spin resonance and the spatial extension of the relaxed excited state ofF- andF A -centres (1979)
    Springer
    The European physical journal 33 (1979), S. 357-364 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract By means of an ESR detection method based on the optical pumping technique theg-factors and ESR-linewidths of the relaxed excited state (RES) of a number ofF- andF A -centres have been measured. From the linewidths information on the spatial distribution of the RES is obtained: The data are interpreted in terms of a very diffuse wavefunction which is essentially the same for all crystals when scaled with the lattice constant. A numerical value for the parameter describing the spatial extension is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01319925
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  • 7
    Electronic Resource
    Electronic Resource
    Mineralstoff- und Aminosäuregehalte des eßbaren, kultivierten Pilzes Shii-take (Lentinus edodes) (1995)
    Springer
    European food research and technology 201 (1995), S. 17-19 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Weltweit werden jährlich etwa 200000 t des Shii-take Pilzes (Lentinus edodes) produziert. Verschiedene positive, biologische Wirkungen sind bekannt (anticarcinogene, cholesterinsenkende Wirkungen und stimulierende Wirkungen auf das Immunsystem), aber die Mineralstoff- und Aminosäuregehalte des Pilzes sind bislang nur wenig untersucht. Die Mineralstoffgehalte sind im allgemeinen niedriger als die des Kulturchampignons (Agaricus bisporus) oder des Austernseitlings (Pleurotus ostreatus). Die größten Unterschiede liegen bei den Kalium-, Phosphor-,Calcium-, Kupfer-, Strontium-, Mangan- und Zinkgehalten vor. Die Gehalte sind in Hüten höher als in den Stielen. Der Gesamtaminosäuregehalt beträgt 15,24% in den Hüten und 11,35% in den Stielen, bez. auf Trokkenmasse, und beträgt somit etwa die Hälfte des Gehaltes von Kulturchampignons. Die Phe-, Gly, His-, Arg-, Ile- und Met-Gehalte sind relativ höher als die von Champignon-Sorten.
    Notes: Abstract World wide about 200000 tons of shii-take mushrooms (Lentinus edodes) are produced per year. Different positive biological effects are known (anticarcinogenic, anticholesterol, immunostimulating effects), but the mineral contents and amino acid composition of caps and stipes are still little investigated. The concentrations of minerals are in general lower than those in the cultivated white mushroom (Agaricus bisporus) and in the oyster mushroom (Pleurotus ostreatus). The greatest differences are found in the concentrations of potassium, phosphorus, calcium, copper, strontium, manganese and zinc. The cocentrations are higher in caps than in stipes. The total amino acid content is 15,24% in caps and 11,35% in stipes (dry matter) and thus in general half of the concentration of cultivated champignon. The amounts of Phe, Gly, His, Arg, Ile and Met are relative higher than inAgaricus fruit bodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01193193
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  • 8
    Electronic Resource
    Electronic Resource
    Bor-Gehalt in häufigen eßbaren Wildpilzarten Ungarns (1995)
    Springer
    European food research and technology 201 (1995), S. 524-527 
    Details
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The boron contents of 68 edible common macrofungi of Hungary were analysed. The average boron content of the examples was 11,74 mg/kg dry mass, this is higher than the average value of green plants of Hungary (7,4 mg/kg dry mass). Although the highest boron contents were found in the examples from woods near Budapest, the differences between the various sites are not significant. It seems that the site has not an important effect on the boron content of mushrooms. Some taxonomical groups are examples of higher, others are examples of lower boron content. The highest concentration of boron (54,3 mg/kg dry mass) was found in the speciesMarasmius wynnei which indicates a bioconcentration of four to five fold to the average boron level. Significant bioaccumulation of analysed edible species was not established, but the poisoning mushroomMycena pura has a very great (401–607 mg/kg dry mass) boron concentration. This accumulation is observed to the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01201576
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  • 9
    Electronic Resource
    Electronic Resource
    Expression of osteoblastic markers in cultured human bone and fracture callus cells (1995)
    Springer
    Journal of molecular medicine 73 (1995), S. 571-575 
    Details
    ISSN: 1432-1440
    Keywords: Callus ; Osteoblast ; Collagen metabolism ; Osteocalcin ; Parathyroid hormone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We compared the expression of osteoblastic markers in cultured human cells isolated from fracture calluses of various histological states of development with that in cells from adult and fetal bone. Adult osteoblasts and all callus cells produced almost exclusively type I collagen, whereas fetal osteoblasts produced also considerable amounts of type III collagen in vitro. 1,25-Dihydroxyvitamin D3 induced the synthesis of osteocalcin in all bone and callus cells but to varying extents. Fetal bone cells and early-stage callus cells synthesized less than 10% the amount of osteocalcin produced by adult bone cells. Late-stage callus cells produced intermediate levels of osteocalcin. Fetal bone cells and early-stage callus cells responded to parathyroid hormone with a less pronounced increase in intracellular cAMP than did adult bone cells. Late-stage callus cells showed the best response to parathyroid hormone. The activity of alkaline phosphatase was highest in fetal bone cells. These observations show that cells isolated from fetal bone and from fracture callus tissues express a pattern of markers clearly relating them to the osteoblastic lineage. On the basis of the different patterns of osteoblastic markers expressed in vitro we conclude that functionally distinct subtypes of osteoblasts do exist in different mineralized tissues and at different developmental stages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00195142
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  • 10
    Electronic Resource
    Electronic Resource
    Determination of arsenic, selenium and mercury in an estuarine sediment standard reference material using flow injection and atomic absorption spectrometry (1995)
    Springer
    Microchimica acta 118 (1995), S. 163-175 
    Details
    ISSN: 1436-5073
    Keywords: flow injection ; As, Se, Hg ; estuarine sediment ; standard reference material ; microwave-oven digestion ; CVAAS ; FIA-AAS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A flow-injection analysis atomic absorption spectrometric (FIA-AAS) method was developed for the determination of trace amounts of arsenic, selenium and mercury in a proposed estuarine sediment standard reference material (SRM 1646a). The samples were prepared in two manners: a) A wet digestion procedure with HNO3, H2SO4, and HClO4 using a reflux column and b) A microwave-oven digestion procedure utilizing HNO3, H2SO4, and HCl for As and Se, and HNO3 for Hg. Microwave-oven digestion provides results comparable to those found by reflux column digestion and reduces the sample preparation time by a factor of 10. The proposed method employing the microwave-oven digestion procedure coupled with FIA-AAS for As and Se, and FIA-CVAAS for Hg, has detection limits of 0.15 ng As/ml, O.17 ng Se/ml and 0.15 ng Hg/ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01244356
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