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Digitale Medien

Clinical and experimental studies of the limulus test after digestive surgery (1995)

Kimura, Yasunori ; Nakao, Akimasa ; Tamura, Hiroshi ; [weitere]

Springer

Surgery today 25 (1995), S. 790-794

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ISSN: 1436-2813

Schlagwort(e): endotoxin ; (1→3)-β-d-glucan ; digestive surgery ; liver cirrhosis ; gauze

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Abstract A chromogenic limulus test (Toxicolor test) revealed a transiently increased blood endotoxin level in some patients after digestive surgery. However, most showed no clinical signs of endotoxemia. The Endospecy test of these specimens, which reacts specifically with endotoxin, did not show a high value, while the Gluspecy test, which reacts specifically with (1→3)-β-d-glucan (glucan), did. These findings thus suggested that the gauze used for surgery contains a large amount of glucan. The intraperitoneal injection of this gauze-saline into rats results in a phenomenon similar to that observed in clinical studies. These findings suggested the involvement of substances other than endotoxin such as glucan in the postoperative positive-Toxicolor phenomenon. In addition, the Toxicolor test also showed a higher value in patients with liver cirrhosis than in those without. In an experimental study in rats, the liver cirrhosis group also showed a significantly high value. These results therefore suggest that the glucan clearance mechanism is impaired in the reticuloendothelial system in liver damage such as cirrhosis.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00311454

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Digitale Medien

Pd(II)-catalyzed copolymerization of a norbornadiene derivative with substituted phenylacetylenes (1997)

Tamura, Hiroshi ; Kanamaru, Hitoshi ; Hirose, Osamu ; [weitere]

Weinheim : Wiley-Blackwell

Macromolecular Rapid Communications 18 (1997), S. 651-657

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ISSN: 1022-1336

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Physik

Notizen: Copolymerizations of diethyl 7-oxabicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylate (DOHDD) with phenylacetylene (PA) or p-methoxyphenylacetylene (MeOPA) were successfully performed in chloroform using PdBr2 as catalyst. The products of reactivity ratios r1 · r2 for poly(DOHDD-co-PA) and poly(DOHDD-co-MeOPA) are 0.026 and 0.0077, respectively. These values suggest a maximum degree of alternating sequences of 86 and 92% in the two systems, hence a high alternating tendency. It is interesting to note that the present copolymerizations occur by combination of different types of monomer, alkene and alkyne.

Zusätzliches Material: 4 Ill.