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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 355 (1981), S. 479-484 
    ISSN: 1435-2451
    Keywords: Absorbable sutures ; Second generation of polyglycolic acid sutures ; Gastrointestinal all-layer suture ; Absorbierbare Fäden ; 2. Generation der PGS-Fäden ; gastrointestinale einreihige Allschichtennaht
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Polyglycolsäurefäden weisen gegenüber anderen resorbierbaren und nicht resorbierbaren Nahtmaterialien folgende Vorteile auf: hohe Fadenzug- und Knotenbruchsicherheit, definierte fast lineare Zugfestigkeitsabnahme, keine immunologische Reaktionen, geringe Capillarität, minimale Gewebereaktion, fast keine fadenbedingte Narbenbildung, Ausheilung von Fadeninfektionen ohne chirurgische Fadenentfernung und Geweberegeneration bei fast ausbleibender Narbenbildung. Diese Vorteile besitzen auch PGS-Fäden der 2. Generation, die wesentlich bessere Handhabungseigenschaften aufweisen, so daß auch der Einsatz bei ungünstigen Lokalisationen handhabungstechnisch möglich wird. In der Chirurgie des Gastrointestinaltraktes und der Trachea und Bronchien wird durch PGS-Nahtmaterialien vor allem der Trend zur einreihigen Allschichtennaht gefördert.
    Notes: Summary Polyglycolic acid (PGA) sutures have proved to be superior than other, nonabsorbable suture materials: a higher traction capacity and knot-tearing security, a defined and nearly linear decrease of traction capacity, no immunological reactions, very little capillarity, minimal tissue reaction, nearly no scar formation, and a bactericidal effect. PGA sutures of the second generation have the same advantages, but surgical handling is so much improved that they may be technically employed in unfavorable locations. In the surgery of gastrointestinal tract and respiratory organs there is a trend to connect all layers with one suture.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0887-3585
    Keywords: cellulases ; active sites ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Cellulomonas fimi produces an endoglucanase and an exoglucanase which bind strongly to cellulose. Each enzyme contains three distinct regions: a short sequence of about 20 amino acids containing only proline and threonine (the ProThr box); an irregular region, rich in hydroxyamino acids, of low charge density, and which is predicted to have little secondary structure; and an ordered region of higher charge density which contains a potential active site, and which is predicted to have secondary structure; and an ordered region of higher charge density which contains a potential active site, and which is predicted to have secondary structure. The Pro-Thr box is conserved almost perfectly in the two enzymes. The irregular regions are 50% conserved, and the conserved sequences include four Asn-Xaa-Ser/Thr sites. The ordered regions appear not to be conserved, but the potential active sites both have the sequence Glu-Xaa7-Asn-Xaa6-Thr; they occur at widely separated sites in the two regions. The order of the regions is reversed in the two enzymes: irregular-Pro-Thr box-ordered in the endoglucanase; ordered-Pro-Thr box irregular in the exoglucanase. The genes for the two enzymes appear to have arisen by shuffling of two conserved sequences and either one or two other sequences.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 47 (1893), S. 397-400 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 5 (1835), S. 228-245 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 25 (1892), S. 2445-2446 
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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