The Structure and Properties of Copolyaspartate II. Copoly(ethyl-L-aspartate-benzyl-L-aspartate) and Copoly(methyl-L-aspartate-benzyl-L-aspartate)
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چکیده
منابع مشابه
Pharmacological Study on L-ornithine L-aspartate.
塩屋 明利 ・倉石 弘一 ・柿本 守夫 ・玉真 洋子 In a healthy subject, ammonia produced in the body is excreted by the kidney in the form of urea, the product of the urea cycle (1), or converted into substances useful for the body. In cases of hepatic disorders, on the other hand, blood ammonia level is known to increase (2-6). It is likely that ammonia in high concentrations interferes with the TCA cycle (7) and th...
متن کاملCephalopod vision involves dicarboxylic amino acids: D-aspartate, L-aspartate and L-glutamate.
In the present study, we report the finding of high concentrations of D-Asp (D-aspartate) in the retina of the cephalopods Sepia officinalis, Loligo vulgaris and Octopus vulgaris. D-Asp increases in concentration in the retina and optic lobes as the animal develops. In neonatal S. officinalis, the concentration of D-Asp in the retina is 1.8+/-0.2 micromol/g of tissue, and in the optic lobes it ...
متن کاملL-ornithine-L-aspartate infusion efficacy in hepatic encephalopathy.
OBJECTIVE To determine the efficacy of L-ornithine-L-aspartate in treatment of hepatic encephalopathy. STUDY DESIGN Randomized, placebo-controlled trial. PLACE AND DURATION OF STUDY Department of Gastroenterology and Hepatology, Sheikh Zayed Hospital, Lahore, from February to August 2005. METHODOLOGY Cirrhotic patients with hyperammonemia and overt hepatic encephalopathy were enrolled. Ei...
متن کاملL-ornithine vs. L-ornithine-L-aspartate as a treatment for hyperammonemia-induced encephalopathy in rats.
BACKGROUND/AIMS The effect of L-ornithine (ORN) and L-ornithine-L-aspartate (OA) therapy on "extracerebral" nitrogen metabolism, brain metabolism and neurotransmission has been investigated in portacaval shunted rats with hyperammonemia-induced encephalopathy. METHODS One day before ammonium-acetate infusion, a portacaval shunt was performed in three experimental groups: 1-control rats, 2-ORN...
متن کاملCrystal structure of β-benzyl dl-aspartate N-carboxyanhydride
In the title racemic compound, C12H11NO5 [systematic name: benzyl 2-(2,5-dioxooxazolidin-4-yl)acetate], the oxazolidine ring is planar, with an r.m.s. deviation of 0.03 Å. The benzyl ring is almost normal to the oxazolidine ring, making a dihedral angle of 80.11 (12)°. In the crystal, inversion dimers are formed between the l- and d-enanti-omers via pairs of N-H⋯O hydrogen bonds. This arrangeme...
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ژورنال
عنوان ژورنال: Polymer Journal
سال: 1982
ISSN: 0032-3896,1349-0540
DOI: 10.1295/polymj.14.781