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9 resultados
Novel inhibitors of hepatitis C NS3-NS4A serine protease derived from 2-aza-bicyclo[2.2.1]heptane-3-carboxylic acid.
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Prolonged hepatitis C infection is the leading cause for cirrhosis of the liver and hepatocellular carcinoma. The etiological agent HCV virus codes a single polyprotein of approximately 3000 amino acids that is processed with the help of a serine protease NS3A to produce structural and
Assessment for evidence of non A-non B hepatitis in patients given n-heptane-suspended heat-treated clotting factor concentrates.
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Nineteen patients, (2 adults, 17 children) with inherited bleeding disorders were infused with n-heptane-suspended-heated clotting factor concentrates. Twelve of the nineteen were previously untreated. Six patients were infused with Profilnine Heat-Treated and 13 with Profilate Heat-Treated. Five
A novel entecavir analogue constructing with a spiro[2.4]heptane core structure in the aglycon moiety: Its synthesis and evaluation for anti-hepatitis B virus activity.
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Synthesis of a novel 2'-deoxy-guanine carbocyclic nucleoside 4 constructed with spiro[2.4]heptane core structure in the aglycon moiety was carried out. Radical-mediated 5-exo-dig mode cyclization and following cyclopropanation proceeded efficiently to furnish the spiro alcohol 10. Subsequent
Synthesis and antiviral activity of cyclopropyl-spirocarbocyclic adenosine, (4R,5S,6R,7R)-4-(6-amino-9H-purin-9-yl)-7-(hydroxymethyl)spiro[2.4]heptane-5,6-diol against hepatitis C virus.
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An efficient method was developed for the synthesis of 6-exocyclic methylene carbocyclic intermediate 4. The Simmons-Smith cyclopropanation protocol was applied on the 6-exocyclic methylene of intermediate 4 and demonstrated its utility for the synthesis of novel class of a spiro-carbocyclic
Hepatitis C virus RNA in factor VIII concentrates.
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BACKGROUND
Hepatitis C virus (HCV) RNA was measured in commercial factor VIII concentrates, that is, antihemophilic factor (human) (AHF), to allow the retrospective evaluation of the effect of various virus-inactivation procedures. The impact on AHF of recent anti-HCV screening of plasma was also
Human coagulation factor IX: assessment of thrombogenicity in animal models and viral safety.
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Thromboembolic complications associated with prothrombin complex concentrate treatment may be related to the high levels of factors II and X in these products. We report here results from preclinical safety studies with a human coagulation factor IX product (AlphaNine; Alpha Therapeutic Corp., Los
Does stress-induced release of interleukin-1 cause liver injury?
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It is well established that repeated immobilization stress (RIS) is induced by increased levels of cytokines and the emergence of lesions in the liver. Our data prove that interleukin-1 (IL-1) causes liver lesions in stressed Wistar rats. In essence, the relationship between IL-1 and stress-induced
Current safety of clotting factor concentrates.
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Earlier commercial clotting factor concentrates transmitted hepatitis viruses to 100% and acquired immunodeficiency syndrome viruses to 60% to 80% of patients with hemophilia. Transmission of the human immunodeficiency virus was nearly eliminated by heating concentrates in the lyophilized state,
The measurement of sulphated and non-sulphated bile acids in serum using gas-liquid chromatography.
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A method is described to assay sulphated and non-sulphated bile acids in serum using gas-liquid chromatography. Previously described techniques have been substantially modified to allow analysis of free and conjugated salts of the four major bile acids with particular care to ensure quantitative
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