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  • 1
    ISSN: 1432-1041
    Keywords: celiprolol ; renal failure ; pharmacokinetics ; enantioselective kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The pharmacokinetics of the ß1-selective adrenergic antagonist (R,S)-celiprolol has been studied after oral administration of 200 mg celiprolol-HCl to 8 healthy volunteers and 8 patients with various degrees of impaired renal function. No significant difference was found between the two enantiomers in the control group or in the patients. In healthy volunteers an average of 9.8% of the dose of R-(+)-celiprolol and 9.5% of S-(-)-celiprolol was recovered unchanged in the urine. Renal impairment reduced the urinary excretion of both enantiomers to the same extent according to the severity of the uraemia, producing higher AUCs. Nevertheless, the terminal half-lives of the R- and S-enantiomers were not significantly different between the groups. Dosage reduction in patients with renal impairment does not seem to be necessary.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Chromatography B: Biomedical Sciences and Applications 496 (1989), S. 387-396 
    ISSN: 0378-4347
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    International Journal of Mass Spectrometry and Ion Physics 47 (1983), S. 411-414 
    ISSN: 0020-7381
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La réaction périprothétique se définit comme une incompabilité biologique aseptique avec la prothèse vasculaire synthétique. Le tableu clinique se caractérise par une tuméfaction indolore et fluctuante autour de la prothèse; il s'agit de la collection d'un liquide stérile entouré d'une capsule fibreuse. Depuis 1979, on a observé et analysé 22 réactions périprothétiques survenues après l'implantation de 2,554 prothèses vasculaires. L'incidence de cette complication est donc d'environ 8/1,000, que la prothèse soit en Dacron® double-velours ou en polytétrafluoroéthylène expansé. De l'analyse de notre série et de celle de la littérature, il ressort que presque 75% des cas étaient des prothèses placées en position extra-anatomique. Le délai moyen entre l'implantation de la prothèse et les premiers signes cliniques était de 25 mois. Bien que l'étiologie exacte ne soit pas encore établie, la pathogénèse dépend probablement de multiples facteurs: (a) traumatismes dus aux mouvements continus de la prothèse dans les tissus environnants, surtout en cas de pontage extra-anastomotiques, (b) irritation physiochimique du lit tissulaire par le matériau de la prothèse (surface en velours, solvants organiques), et (c) mauvaise incorporation de la prothèse susceptible de provoquer la formation d'une cavité périprothétique et l'accumulation de liquide autour de la prothèse. Les causes infectieuses, immunologiques ou allergiques semblent avoir été éliminées. Le traitement consiste à remplacer complètement ou en partie la prothèse et a la remplacer par une prothèse d'un autre matériel synthétique at à pratiquer l'exérèse de la coque. Il faut proscrire les ponctions répétées en raison des taux élevées d'échecs et d'infections secondaires.
    Abstract: Resumen La reacción periprotésica puede ser definida como una incompatibilidad biológica aséptica de las prótesis vasculares sintéticas. El cuadro clínico se caracteriza por inflamación fluctuante e indolente alrededor de la prótesis, constituída por líquido estéril rodeado de una cápsula fibrosa. A partir de 1979, hemos observado 22 reacciones periprotésicas en 2,554 injertos vasculares, las cuales han sido estudiadas y analizadas. La incidencia de esta complicacíon es de alrededor de 8/1,000 tanto para el Dacron® double-velour como para el politetrafluoroetileno expandido. Incluyendo 306 reportes de la literatura, las prótesis en posiciones extraanatómicas comprenden el 75% del material analizado. El intervalo promedio entre la implantación del injerto y la manifestación clínica fue de 25 meses. A pesar de que la etiología aún no está aclarada, su patogénesis parece ser multifactorial: (a) aparece el trauma mecánico debido a un movimiento continuo de la prótesis en los tejidos vecinos (especialmente en el caso de injertos extraanatómicos), (b) aparece la irritación físicoquímica del lecho tisular por el material protésico mismo (superficie de velour, solventes orgánicos), y (c) la pobre incorporacíon del injerto puede dar lugar a la formación de un espacio periprotésico libre con acumulación de líquido a su alrededor. El tratamiento consiste en el reemplazo total o parcial de la porción afectada del injerto y de la pared del quiste periprotésico por una prótesis de diferente material sintético. La aspiration repetida del quiste periprotésico debe ser evitada por su escasa tasa de éxito y por el peligro de infeccíon secundaria.
    Notes: Abstract Perigraft reaction can be defined as an aseptic biological incompatibility of synthetic vascular prostheses. The clinical picture is characterized by an indolent fluctuating swelling around the prosthesis, consisting of sterile fluid surrounded by a fibrous capsule. Since 1979, a total of 22 perigraft reactions in 2,554 implanted vascular grafts were observed and analyzed. The incidence of this complication is about 8/1,000 both for Dacron ® double-velour and expanded polytetrafluoroethylene (PTFE). Including 306 reports from the literature, prostheses in the extraanatomical position comprise nearly 75% of the material analyzed. The time interval between graft implantation and clinical manifestation is, on average, 25 months. Although the etiology is still unclear, the pathogenesis is supposed to be multifactorial: (a) there is mechanical trauma due to continuous shifting of the prosthesis in the surrounding tissue (especially in the case of extraanatomic grafts), (b) there is physicochemical irritation of the tissue bed by the graft material (velour surface, organic solvents), and (c) poor incorporation of the graft may lead to periprosthetic gap formation and fluid accumulation around the prosthesis. Infections, or immunologic or allergic causes can be excluded. Therapy includes total or partial replacement of the affected portion of the graft and cyst wall with substitution by a prosthesis of a different synthetic material. Repeated aspiration of the periprosthetic cyst should be avoided because of the high failure rate and danger of secondary infection.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 28 (1972), S. 312-313 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Wiederholte orale Gabe des Neuroleptikums Perazin (Taxilan®) führt bei der Ratte zur Kumulation eines Metaboliten mit teilweise abgebautem Piperazinring, N-[γ-Phenothiazinyl-(10)-propyl]-äthylendiamin. Seine Konstitution wurde durch NMR- und Massenspektroskopie sowie durch Synthese geklärt. Als weiteres Abbauprodukt wurde γ-[Phenothiazinyl-(10)]-propylamin identifiziert.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 55 (1968), S. 230-230 
    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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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 59 (1972), S. 98-99 
    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
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 2 (1976), S. 1-11 
    ISSN: 1573-1561
    Keywords: Stenus comma ; staphylinid ; pygidial defensive glands ; 1,8-cineole ; 6-methylhept-5-en-2-one ; stenusin ; spreading pressure ; surface-active agents
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The staphylinidStenus comma secretes from its pygidial defensive glands at least four compounds which could be characterized as 1,8-cineole, 6-methylhept-5-en-2-one, isopiperitenol, and N-ethyl-3-(2-methylbutyl)piperidine.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1955
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Ein Fund von Monodontella giraffae in der Leber einer Giraffe (Giraffa camelopardalis rothschildi) wird in seinen pathologisch-anatomischen und histologischen Auswirkungen besprochen. Die pathologischen Veränderungen betreffen vorwiegend die Leber, die das Bild einer mittelgradigen Zirrhose zeigt. Granulome in den schwächer befallenen Bezirken und Adenome der Gallengänge in den stark geschädigten Gebieten sind neben vielen Fibroblasten, die sich zwischen die einzelnen Zellen einschieben, das typische Bild des Leberparenchyms. Die Kerne der Parenchymzellen zeigen alle Stadien des nekrobiotischen Leberzerfalls. Die mit Schleim erfüllten, stark verdickten Gallengänge lassen im histologischen Bild sehr viele Fibroblasten erkennen, die, von den Gallengangswandungen ausgehend, diese Detritusmassen zu durchwachsen versuchen. Künstliche Infektionen verschiedener Versuchstiere mit den gezüchteten Larven wurden ohne Erfolg durchgeführt. Es wird die Vermutung geäußert, daß Monodontella-Infektionen bei Giraffen nur auf einige Unterarten beschränkt sind, die in einem Gebiet leben, das für die Entwicklung und percutane Infektionsmöglichkeit durch die Monodontella-Larven auf Grund der Bodenverhältnisse (größere Bodenfeuchtigkeit) besonders geeignet erscheint.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 18 (1989), S. 224-232 
    ISSN: 0887-6134
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electron impact mass spectra of the oral coumarin anticoagulant phenprocoumon and its 4-O-alkyl and 2-O-alkyl (methyl and ethyl) derivatives (including deuterium and 13C-labelled compounds) have been analysed using accurate mass measurements and B/E and B2/E constant linked-scan techniques; fragmentation routes have been proposed which are different from those for simple coumarins and other oral coumarin anticoagulants. All compounds showed an ethyl group migration from the phenylpropyl side chain to the coumarin ring; the O-alkyl derivatives presented additionally a rearrangement with bond formation between a C atom of the O-alkyl group and the phenyl ring of the side chain. Previous literature reports about fragment ion structures for methylated phenprocoumon have been revised.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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