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  • 1990-1994
  • 1980-1984  (12)
  • 1970-1974  (7)
  • 1965-1969
  • 1983  (12)
  • 1970  (7)
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Years
  • 1990-1994
  • 1980-1984  (12)
  • 1970-1974  (7)
  • 1965-1969
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 61 (1983), S. 803-805 
    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
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nutrition 22 (1983), S. 241-254 
    ISSN: 1436-6215
    Keywords: Krankenernährung ; Organisation der Krankenernährung ; Ernährungsdiagnostik ; Ernährungskonzepte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Medicine
    Description / Table of Contents: Summary Hospital diet is an essential part of modern therapy in all medical departments. It comprises both the so-called normal diets which are prepared according to modern nutritional knowledge, dietetic foods and the various forms of artificial nutrition (nutrient-defined and chemically defined diets, parenteral and combined nutrition, i.e. enterai and parenteral nutrition). The integration of nutritional therapeutic problems into the treatment of patients requires optimal scientific and practical forms of organisation of nutrition in the clinic. For that purpose, cooperation of clinical, technical, economic and pedagogic divisions is of prime importance. The organisation of patient nutrition in the St. Georg District Hospital in Leipzig is described as a feasible model.
    Notes: Zusammenfassung Die Krankenernährung ist ein wesentlicher Bestandteil einer modernen Therapie aller medizinischen Fachbereiche. Sie umfaßt sowohl die sogenannten Normalkostformen, die nach modernen ernährungswissenschaftlichen Kenntnissen hergestellt werden, die Diätkost und die verschiedenen Formen der künstlichen Ernährung (nährstoffdefinierte — und chemisch definierte Diäten, parenterale und Kombinationsernährung, d. h. enterai und parenteral). Die Einbeziehung der ernährungstherapeutischen Prinzipien in den Behandlungsplan der Patienten erfordert wissenschaftlich und praktisch optimale Organitionsformen der Krankenernährung. Dafür ist die Zusammenarbeit klinischer, technisch-wirtschaftlicher und pädagogischer Disziplinen Voraussetzung. Als praktikables Modell wird die Organisation der Krankenernährung im Bezirkskrankenhaus St. Georg Leipzig beschrieben.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Body size is the best overall indicator of the abilities of the cladocerans Daphnia magna, D. parvula, Ceriodaphnia lacustris and Bosmina longirostris to filter natural bacteria (〈1.0 μm). However, species differences exist which cannot be inferred from differences in size, behavior, or morphology alone. The relationship between filtering rate (FR in ml animal-1h-1) and body length (L in mm) for the cladocerans studied can be described by the power function: $$\begin{gathered} FR = 0.538 L^{1.545} \hfill \\ (r^2 = 0.88, F = 168.54, P 〈 0.001). \hfill \\ \end{gathered}$$ In D. parvula, algal filtering rates are higher and increase more rapidly with increasing body size than do bacterial filtering rates which are 26 to 33% of algal rates. This suggests that different processes may be involved in the capture of these ultrafine particles and that ultrafine particle capture efficiency decreases with increasing body size within a species. Weight specific filtering rates (in μl μg dry wt-1h-1) have a strong negative relationship to body size and show species specific differences. Appendage beat rates intersetular distances, setule diameter, appendage, area, % open space on the filtering appendage, Reynolds number, and boundary layer thickness do not provide simple predictions of bacterial filtering rates for the cladocerans studied. Filtering rates on cultured laboratory bacteria and algae may not indicate filtering rates on natural bacterioplankton because of differences in bacterial size, motility, and surface properties. Uptake of ultrafine particles may be enhanced by the presence of larger, more readily filtered particles through a “piggybacking” phenomenon.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-1440
    Keywords: Renal artery stenosis ; Hypertension ; Peripheral arterial occlusive disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In order to evaluate the prevalence of renal artery stenoses and the coincidence with hypertension, in this study 110 patients (24 women, 86 men, mean age 63.2±8.6 years) underwent retrograde aortography for reason of symptomatic arteriosclerosis obliterans of the lower limb arteries. In 18 (16.4%) patients renal artery stenoses by which the lumen was narrowed for more than 30% and in 2 (1.8%) patients occlusions of one renal artery were found, all of which seemed to be of arteriosclerotic origin. 12 (60%) patients with renal artery stenoses or occlusions showed arterial hypertension (RR 171±33/94±16 mmHg) inspite of adequate antihypertensive medication, 8 were normotensive even though renal artery stenoses were found angiographically. On the other hand 30 (33%) of the 90 patients without renal artery stenoses were hypertensive (RR 165±15/93±9 mmHg). These data support the observation that renal artery stenoses must not result in hypertension, but clearly indicate the higher prevalence of hypertension in patients with renal artery stenoses or occlusions. With regard to the low-risk procedure of percutaneous transluminal dilatation of renal arteries, it seems to be valuable for hypertensive patients to include renovasography into the angiographic evaluation of symptomatic lower limb arteriosclerosis.
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 183 (1983), S. 129-132 
    ISSN: 1433-8580
    Keywords: Intracellular Na+ and Ca2+ ; Aortic smooth muscle ; Spontaneously hypertensive rats
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In aortic smooth muscle cells from spontaneously hypertensive and normotensive rats, which were separated from the blood vessels by enzymatic digestion, intracellular Na+ and Ca2+ activities were measured. The determinations were made by ion-selective electrodes. In smooth muscle cells from spontaneously hypertensive rats intracellular Na+ and Ca2+ activities were elevated as compared to cells from normotensive rats (P〈0.001 for Na+ andP〈0.01 for Ca2+). Since in cultured aortic smooth muscle cells from spontaneously hypertensive rats intracellular Ca2+ is known to be not significantly increased, primarily humoral factors may account for the changes in intracellular Ca2+ reported.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1433-8580
    Keywords: Potassium ; Blood pressure ; Intracellular electrolytes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To study the mechanisms by which K+ influences vascular tone in hypertension, spontaneously hypertensive and normotensive rats were examined during an oral K+ load. There was a marked decrease in blood pressure in spontaneously hypertensive but not in normotensive rats. Intraerythrocytic K+ concentration and activity increased in normotensive but not in spontaneously hypertensive rats. Intraerythrocytic Na+ concentration and activity declined in both strains, the decrease in Na+ activity being more prominent in spontaneously hypertensive rats (P〈0.05). Intraerythrocytic Ca2+ activity decreased in spontaneously hypertensive rats (P〈0.01) but not in normotensive rats. In both strains plasma aldosterone concentration increased during K+ load, the plasma renin activity being suppressed. The basal levels of plasma aldosterone in spontaneously hypertensive rats exceeded those in normotensive rats. It is concluded that intraerythrocytic Ca2+, and to a lesser extent Na+, correlate best with the blood pressure changes. These ionic changes may be mediated by hormonal factors. The significance of the elevated plasma aldosterone levels has not yet been entirely clarified.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Anatomy and embryology 130 (1970), S. 153-176 
    ISSN: 1432-0568
    Keywords: Alkaline phosphatases ; Blood vessels ; Lymphatic system ; Mast cells ; Nucleotidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Bei der Ratte wurden die Arterien und lymphgefäße, die Blut- und Lymphcapillaren sowie die Gewebsmastzellen der Zunge hinsichtlich des Gehaltes an unspezifischer alkalischer Phosphatase, 5′-Nucleotidase und Polyphosphatasen (ATP'asen) untersucht. Der Nachweis der Enzyme erfolgte über einen größeren pH-Bereich (pH 9,4; 8,8; 8,4; 8,0; 7,6 und 7,2). Unspezifische alkalische Phosphataseaktivität fand sich in den innersten Bezirken der Adventitia von Arterien oberhalb eines Durchmessers von 120 μ, im Endothel des Abgangsbereiches von Arterien mit Durchmessern von 25–50 μ, im Endothel der Arteriolen, in den Endothelien der Blutcapillaren sowie in den Gewebsmastzellen. In den Blutgefäßcapillaren konnte immer ein höherer Gehalt an unspezifischer alkalischer Phosphatase in arteriellen als in venösen Schenkeln nachgewiesen werden. Die Gewebstmastzellen zeigten nur eine sehr schwache unspezifische alkalische Phosphataseaktivität. Durch Zusatz von 0,0025 M L-Cystein ließ sich die unspezifische alkalische Phosphatase vollkommen hemmen. Weder 0,0025 M p-Chloromercuribenzoesäure (PCMB) noch 10−4M Nickelionen beeinflußten die nachweisbare unspezifische alkalische Phosphataseaktivität. 5′-Nucleotidaseaktivität fand sich in der glatten Muskulatur der Lymphgefäße, in den Endothelien der Blut- und Lymphcapillaren sowie in den Gewebsmastzellen. Die Abgrenzung gegen die unspezifische alkalische Phosphatase gelang durch das unterschiedliche Reaktionsoptimum (pH-Optimum) beider Enzyme und durch die starke Aktivierbarkeit der 5′-Nucleotidase durch Nickelionen. Eine deutliche Polyphosphataseaktivität konnte von uns in der glatten Muskulatur der Arterien und Lymphgefäße, in den Blut- und Lymphcapillaren sowie in den Gewebsmastzellen nachgewiesen werden. Die Polyphosphatase der glatten Muskulatur der Arterien und Lymphgefäße ließ sich gegen die Polyphosphatase der Blut- und Lymphcapillaren (Endothelpolyphosphatase) durch das unterschiedliche Reaktionsverhalten beider Polyphosphatasen gegen ATP und ADP abgrenzen. Beide Polyphosphatasen zeigten eine deutliche Steigerung der Aktivität durch Zusatz von 0,0025 M PCMB. Dieser Effekt war jedoch mit Ausnahme der Muskelcapillaraktivität erst bei pH 8,0; 7,6 und 7,2 nachweisbar. Von diesen Polyphosphatasen unterschied sich die Polyphosphatase der Gewebsmastzellen durch ihre Hemmbarkeit mittels 0,0025 M PCMB. 0,0025 M L-Cystein beeinflußte die beschriebene Polyphosphataseaktivität nicht. Die Rolle dieser Enzyme im Stoffwechsel der Blut- und Lymphgefäße sowie der Gewebsmastzellen wurden diskutiert.
    Notes: Summary In the tongue of the rat the arteries and lymph vessels, the blood and lymph capillaries and the tissue mast cells have been examined with respect to their content of unspecific alkaline phosphatase, 5′-nucleotidase and polyphosphatases (ATP'ases). The histochemical investigation of these enzymes was carried out at pH 9.4; 8.8; 8.4; 8.0; 7.6 and 7.2. Unspecific alkaline phosphatase was found in the inner parts of the adventitia of arteries with diameters above 120 micra, in the endothelium of arteries with diameters from 25 to 50 micra at the origin from the parent vessel, in the endothelium of arterioles, in the endothelium of blood capillaries and in the tissue mast cells. A regularly, higher activity of unspecific alkaline phosphatase could be demonstrated in the arterial than in the venous parts of blood capillaries. In the tissue mast cells there was only a very weak activity. By adding 0.0025 M L-cystein to the incubation medium the unspecific alkaline phosphatase activity was completely abolished. The activity of the unspecific alkaline phosphatase was not influenced by addition of either p-chloromercuribenzoic acid 0.0025 M (PCMB) or 10−4M nickel ions to the incubation medium. 5′-nucleotidase activity was found in the smooth muscle of lymph vessels, in the endothelium of blood and lymph capillaries, as well as in the tissue mast cells. The differentiation against unspecific alkaline phosphatase was accomplished by making use of the different reaction optimum (pH-optimum) of both enzymes and the strong activation of 5′-nucleotidase by nickel ions. Polyphosphatase activity was demonstrated in the smooth muscle of arteries and lymph vessels, in the endothelium of blood and lymph capillaries, and in the tissue mast cells. The polyphosphatase of the smooth muscle of arteries and lymph vessels could be differentiated from the polyphosphatase of the blood and lymph capillaries by means of their different behaviour against ATP and ADP. Both polyphosphatases showed an increase of activity following the addition of 0.0025 M PCMB to the incubation medium. Except for the polyphosphatase activity of blood capillaries of the striated muscle, this activation could be demonstrated only at pH 8.0; 7.6 and 7.2. From these two polyphosphatases at least the polyphosphatase of the tissue mast cells could be differentiated because the reaction was inhibited after addition of 0.0025 M PCMB to the incubation medium. L-cystein (0.0025 M) had no influence on the polyphosphtase activity. The role of these enzymes in the metabolism of the blood and lymph vessels and the tissue mast cells is discussed.
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  • 8
    ISSN: 1432-1076
    Keywords: Insulin dependent diabetes ; Remission ; Glucose ; Tolbutamide ; Arginine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The insulin secretory capacity was examined in diabetic children at the time of partial clinical remission during which their condition could be managed with low insulin therapy (〈0.5 U insulin/kg body weight) and no urinary glucose excretion. The extent of the residual beta cell function in 26 children was assessed either by an i.v. arginine test, a combined i.v. glucose-i.v. arginine test, a combined i.v. tolbutamide-i.v. arginine test, or a combined oral glucose-i.v. arginine test determining the C-peptide response by calculating the area under the curve above baseline levels. Two of the children were tested repeatedly. Under the above conditions i.v. glucose and i.v. tolbutamide did not release C-peptide in diabetic children. In contrast, C-peptide secretion during arginine infusion following i.v. glucose or i.v. tolbutamide was siginficantly enhanced compared to the C-peptide secretion observed during arginine infusion alone. The C-peptide response to oral glucose was sluggish with no effect on the following arginine infusion. The results indicate that during remission in juvenile onset diabetes i.v. glucose and i.v. tolbutamide without themselves being an appropriate signal for C-peptide release amplify the response to a subsequent arginine infusion under appropriate conditions.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 53 (1983), S. 207-211 
    ISSN: 1432-0738
    Keywords: Milk ; Human ; Cadmium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Electrothermal atomic absorption spectrophotometry was employed to analyse cadmium in breast milk. Twenty breast milk samples were donated by seven mothers during 6 months of lactation. All milk samples represented every feeding during a period of 24 h, having foremilk an hindmilk in equal proportions. The median cadmium concentration in the 1st month was 2.0 μg/l (range 1.7–3.1 μg/l, 7 samples) and then declined to 1.5 μg/l (range 1.3–2.5 μg/l, 7 samples) and 1.6 μg/l (range 1.2–2.0 μg/l, 6 samples) in the 3rd and 6th months, respectively. At the age of 1 and 3 months when the infants were totally breast fed the average weekly intake of cadmium was 2.7 and 1.5 μg/kg. This is below the provisional tolerable weekly intake of man, from 6.7 to 8.3 μg/kg, proposed by WHO.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Manuscripta mathematica 2 (1970), S. 67-75 
    ISSN: 1432-1785
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Let R be an analytic algebra over the perfect field k. Assume that R is a reduced complete intersection. Then the i-th exterior powers of the KäHLER differential module of R over k are torsionfree (resp. reflexive) for i=1,...,p if and only if the codimension of the singular locus of R is greater than inf{p,dim R} (resp. inf{p+1,dim R}).
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