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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 45 (1967), S. 1160-1161 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary By injecting Cortisol-11α-T followed by the assay of the specific Tritium-activity in the condensed water of exspired air the oxydation of the 11-Hydroxyl-group can be determined in vivo. After Metoprion-treatment of rats Cortisol-11α-T oxydation reaches significantly higher values when the animals were stressed, than in Metopiron-treated animals without stress.
    Notes: Zusammenfassung Durch Injektion von Cortisol-11α-T und anschließende Messung der spezifischen Aktivität des Kondenswassers der Atemluft kann die Mindestoxydation an der 11-Hydroxy-Gruppe in vivo bestimmt werden. Bei Ratten, deren endogene Bildung 11-hydroxylierter Nebennierenrinden-Hormone durch Metopirongabe gehemmt ist, wird injiziertes Cortisol-11α-T unter Stress-Bedingungen viermal schneller oxydiert als bei ungestressten Tieren. Die Wärmeproduktion erhöht sich dagegen unter Stress-Bedingungen nur auf das 1 1/2 fache der Normalwerte. Die Zusammenhänge zwischen Cortisol-Oxydation und Stress werden diskutiert.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 31 (1953), S. 24-25 
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nuclear medicine 10 (1985), S. 138-142 
    ISSN: 1619-7089
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Ruthenocenoyl-glycine (ruppuran) is a metallocene analog of iodo-labeled hippuran. After injection of 103Ru-labeled ruppuran and ruthenocenoyl-1,1′-diglycine in rabbits, measurement with external detectors revealed a very rapid accumulation in the kidneys followed by rapid excretion of the 103Ru activity. By measurement of the radioactivity concentration in plasma and urine samples collected 1–60 min after IV injection, the plasma clearance was calculated and compared with the clearance of 125I-labeled hippuran injected simultaneously. The clearance of ruppuran and ruthenocenoyl-diglycine in rabbits was found to be somewhat higher than that of hippuran. Extrapolating to man (1.73 m3), plasma clearance with both ruthenocene derivatives was approximately 500–600 ml/min. Biochemical data as well as the nuclear properties of 97Ru indicate the usefulness of 97Ru-labeled ruthenocenoyl-glycine as a radiopharmaceutical for kidney function studies.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 202 (1964), S. 896-898 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table l. ISOLATION AND PUEIFICATION OF THE TRITIATED SAMPLES 897 Method of tritiation* Temperature (C) Tritium gas-pressure (mm Hg) Weight of substance treated (mg) Weight of substance extracted (mg) Specific a crude product (/zc./mgt) ctivity of purified product (/uc./mg) Factor of ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Der Ophthalmologe 96 (1999), S. 20-23 
    ISSN: 1433-0423
    Keywords: Key words“Acrysof”• Biocompatibility • Foldable lenses •“Memory lens” ; Schlüsselwörter Acrysof®• Biokompatibilität • Faltbare Linsen • Memory lens®
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Hintergrund: Ein Teilaspekt der Biokompatibilität von Linsenimplantaten kann durch die In-vivo-Zytologie, der Differenzierung von Zellauflagerungen auf dem Implantat, untersucht werden. Patienten und Methode: Wir untersuchten 45 Patienten, die eine „Memory lens®“ und 31 Patienten, die eine „Acrysof®“-Linse implantiert bekamen 3–6 Monate nach der Operation spiegelmikroskopisch. Ergebnisse: Die typischen Auflagerungen (Linsenepithelien, spindelförmige Makrophagen, Riesenzellen, Pigment, Wolter-Membran, Implantations-Pinzetten-Spuren) waren auf beiden Linsentypen gleich selten. Nach der Implantation der „Acrysof“-Linse wuchsen weniger Linsenepithelzellen auf der Hinterkapsel. Schlußfolgerung: Wir fanden keinen Hinweis auf eine reduzierte Biokompatibilität der untersuchten faltbaren Linsen. Eine reduzierte Nachstarhäufigkeit der Acrysof®-Linse ist wahrscheinlich durch die „Klebrigkeit“ der Linse mit der Hinterkapsel verursacht.
    Notes: Purpose: One aspect of biocompatibility of IOLs can be tested using specular microscopy of the anterior and posterior surface of the lens in vivo. Methods: We examined 45 patients after implantation of a “Memory lens” and 31 patients after the implantation of an “Acrysof” lens 3–6 months after surgery. Results: Typical deposits (Lens epithelial cells, spindle-shaped macrophages, giant cells, pigment, Wolter membrane) were rarely seen on both types of lenses. There were fewer lens epithelial cells on the posterior capsule and less secondary cataract after implantation of the “Acrysof” lens. Conclusions: We did not find any indication of reduced biocompatibility in any of the lenses examined. The reduced rate of secondary cataract after implantation of the “memory lens” may be explained by the fact that this lens type sticks to the posterior capsule better.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1433-0423
    Keywords: Key words Fluorescein angiography • Normal-tension glaucoma • Optic nerve head cupping ; Schlüsselwörter Angiographie • Normaldruckglaukom • Papillenexkavation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Hintergrund: Eine Ischämie der Retina und des Sehnerven erscheint von zunehmender Bedeutung in der Genese des Glaukoms. Gerade bei Patienten mit Normaldruckglaukom (NDG) wird diese vaskuläre Genese diskutiert. In dieser Studie haben wir die retinale Hämodynamik bei Patienten mit NDG untersucht. Patienten und Methode: 25 Patienten mit NDG wurden in die Studie eingeschlossen (Alter 58 ± 16 Jahre). Nach einer Auswaschphase von 3 Wochen wurden die arteriovenöse Passagezeit (AVP) sowie die arteriellen und venösen Durchmesser („half height of maximum height“) aus Scanning-Laser-Fluoreszein-Angiographien mittels digitaler Bildanalyse ermittelt. Ergebnisse: Die arteriovenöse Passagezeit war bei Patienten mit NDG (2,78 ± 1,1 s) signifikant (p 〈 0,0001) gegenüber gesunden Probanden (1,58 ± 0,4 s) verlängert. Es zeigten sich keine Korrelationen zwischen den arteriellen, venösen Durchmessern, des intraokularen Druckes, des Bludruckes und des berechneten Perfusionsdruck mit der retinalen arteriovenösen Passagezeit. Zusammenfassung: Bei Patienten mit NDG kann die verlangsamte Passage als Ursache einer chronischen Hypoxie gewertet werden. Dieses könnte darauf hinweisen, daß eine Zirkulationsstörung als primärer Faktor in der Genese der Normaldruckglaukoms zu werten ist.
    Notes: Summary Chronic ischemia of the retina and the optic nerve head seems of importance especially in patients with normal-tension glaucoma (NTG). The purpose of this study was to examine the retinal hemodynamics in patients with NTG. Patients: Twenty-five patients with NTG were examined (3 weeks washout period) in this study (age 58 ± 16 years). The arteriovenous passage (AVP) time and arterial and venous diameters from scanning laser fluorescein angiograms were evaluated by means of digital image analysis. Results: The AVP time in patients with NTG (2.78 ± 1.1 s) was significantly prolonged (P 〈 0.0001) compared with healthy subjects (1.58 ± 0.4 s). No significant correlation was found between arterial and venous diameters, intraocular pressure, blood pressure or calculated perfusion pressure and retinal arteriovenous passage time. Conclusion: Patients with NTG showed prolonged retinal passage, which could cause chronic hypoxia. This prolongation of circulation is not correlated with any of the clinical parameters. Thus, a circulatory defect might be a primary factor in the pathogenesis of NTG.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 42 (1955), S. 370-371 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 42 (1955), S. 424-424 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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