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Pyrimidine in Medical News

Pharmasset Nominates PSI-938 as a New Nucleotide Analog Inhibitor of Hepatitis C for Preclinical Development

... interesting to us since it differs from our pyrimidine analogs, R7128 and PSI-7851, because it has a ... analogs have many of the benefits of pyrimidine nucleos(t)ide analogs, like R7128 and PSI-7851, ... resistant variant selected in vitro by the pyrimidine analogs, and are metabolized to the active ...

NCCN Announces Updates to Pancreatic Adenocarcinoma Guidelines

... disease by saying, "Single agent gemcitabine (Gemzar(R), Eli Lilly and Company) or selected gemcitabine combinations followed by a fluorinated pyrimidine plus oxaliplatin is the standard of care." Of all the gastrointestinal malignancies, pancreatic adenocarcinoma is the second most common cause ...

Pharmasset Presents R7128 14-Day Monotherapy Study Results for the Treatment of Chronic Hepatitis C

... a Phase 2 clinical trial. About R7128 R7128 is being developed for the treatment of chronic HCV infection. R7128 is a prodrug of PSI-6130, a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase. A prodrug is a chemically modified form of a molecule designed to enhance the absorption, ...

Protein Folds Research Offers Insight into Metabolic Evolution

... analysis also found that the most ancient metabolic protein folds are vital to RNA metabolism, particularly the interconversion of the purine and pyrimidine nucleotides that create the core of the RNA molecule. This discovery supports the hypothesis of an RNA world in which RNA molecules were ...
Pyrimidine in Medical Technology

Trius Antibiotics to be Highlighted in 18 Presentations at ICAAC/IDSA

... 12:15 pm - 1:15 pm) -- F1-334: Discovery and SAR of a Novel Series of pyrimidine Antibacterials Targeting Methionyl-tRNA Synthase (MetRS) -- F1-335: ... 197, 11:15 am - 12:15 pm) -- F2-2070: Structure Guided Design of pyrimidine Antibacterials Targeting Methionyl-tRNA Synthase (MetRS) Copies of ...

Pharmasset Announces Initiation of Combination Study of Clevudine and Viread(R) for HBV by French National Agency for Research on AIDS and Viral Hepatitis (ANRS)

... for sustained virologic response (SVR) after being off of therapy for 24 weeks, the primary endpoint of the study. Clevudine is an oral, once-daily pyrimidine nucleoside analog that has been evaluated in 18 clinical trials in more than 800 individuals. Phase 3 studies are currently being conducted in ...

R7128 Receives Fast Track Designation from the FDA for the Treatment of Chronic Hepatitis C Infection

... a Phase 2 clinical trial. About R7128 R7128 is being developed for the treatment of chronic HCV infection. R7128 is a prodrug of PSI-6130, a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase. A prodrug is a chemically modified form of a molecule designed to enhance the absorption, ...

Pharmasset Commences Dosing in 28-Day Combination Study of R7128 with Pegasys(R) plus Copegus(R) for Hepatitis C

... a Phase 2 clinical trial. About R7128 R7128 is being developed for the treatment of chronic HCV infection. R7128 is a prodrug of PSI-6130, a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase. Results from an oral single ascending dose study of PSI-6130 in 24 healthy male volunteers showed ...

Pharmasset Commences Dosing in Phase 3 Registration Studies of Clevudine for HBV

... in Phase 3 registration clinical trials of clevudine for the treatment of chronic hepatitis B virus (HBV) infection. Clevudine is an oral, once-daily pyrimidine nucleoside analog that has previously been evaluated in 14 clinical trials in more than 800 individuals. The current Phase 3 studies will be ...

Pharmasset Presents R7128 Phase 1 Single Ascending Dose Study in Healthy Volunteers

... developed for the treatment of chronic hepatitis C. R7128 is a prodrug of PSI-6130, which demonstrated potency in preclinical studies. PSI-6130 is a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase, an enzyme that is necessary for hepatitis C viral replication. Results from an oral single ...

R7128 Demonstrates Safety and Potent Antiviral Activity in HCV-Infected Patients

... developed for the treatment of chronic hepatitis C. R7128 is a prodrug of PSI-6130, which demonstrated potency in preclinical studies. PSI-6130 is a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase, an enzyme that is necessary for hepatitis C viral replication. Results from an oral single ...

New Positive Pre-clinical Data for Active Biotech's RA Project I-3D

... rapidly proliferating T cells with an exceptional requirement for de novo pyrimidine biosynthesis. DHODH inhibition results in inhibition of de novo pyrimidine synthesis and thereby inhibition of T-cell proliferation. In May ...

Pharmasset Announces Clevudine and Hepatitis C Presentations at EASL

... of the enzymes involved in the phosphorylation of PSI-6130 and inhibition of HCV NS5B. About Clevudine Clevudine is an oral, once-daily pyrimidine nucleoside analog that we are developing for the treatment of HBV. We licensed clevudine from Bukwang Pharm. Co., Ltd., a Korean ...
Pyrimidine in Medical Definition

Pathology

... balance - H 2 O Dehydration / Hypervolemia - K + Hypokalemia / Hyperkalemia - Cl − Hyperchloremia / Hypochloremia Purine and pyrimidine Hyperuricemia - Lesch-Nyhan syndrome - Xanthinuria Porphyrin Acute intermittent , Gunther's , Cutanea tarda , Erythropoietic , ...
Pyrimidine in Biological News

New computational technique allows comparison of whole genomes as easily as whole books

... researchers translated the genome sequences using a reduced, two-letter alphabet - R for the purine nucleic acids, adenine and guanine, and Y for the pyrimidine nucleic acids, thymine and cytosine - to reduce the complexity of calculation. Using an optimal feature length of 18 base pairs, this test created a ...

Study of protein folds offers insight into metabolic evolution

... analysis also found that the most ancient metabolic protein folds are important to RNA metabolism, specifically the interconversion of the purine and pyrimidine nucleotides that compose the core of the RNA molecule. This discovery supports the hypothesis of an RNA world in which RNA molecules were among ...

Enzyme, lost in most mammals, is shown to protect against UV-induced skin cancer

... that ultimately can result in the onset of skin cancer. Thus far it was not clear how the two major types of UV-induced DNA lesions ?cyclobutane pyrimidine dimers (CPDs) and (6-4)photoproducts (6-4PPs) ?contribute to the processes of cell death and cancer formation. Identifying the relative contributions ...
Pyrimidine in Biological Technology

Pharmasset and Roche to Present R7128 Data at the 14th International Symposium on Hepatitis C Virus and Related Viruses

... developed for the treatment of chronic hepatitis C. R7128 is a prodrug of PSI-6130, which demonstrated potency in preclinical studies. PSI-6130 is a pyrimidine nucleoside analog inhibitor of HCV RNA polymerase, an enzyme that is necessary for hepatitis C viral replication. Results from an oral single ...

Transformation of Filamentous Fungi by Microprojectile Bombardment

... transformation of an Aspergillus nidulans strain deficient in pyrimidine synthesis by selection for prototrophic transformants. The ... were found, indicating that the pyrG89 mutation of the pyrimidine auxotrophic A. nidulans strain was successfully complemented by ...

FERMENTATION BASICS

... is a nutritional requirement. Purines and pyrimidines It is generally only in bacteria that cases of purine and pyrimidine metabolism have been reported. Algae do not utilize these compounds at all. Vitamins and growth factors There is ...

Gene-Expression Analysis of TP, DPD, and TS Using the LightCycler mRNA Quantification KitsPLUS

... the de novo synthesis of thymidine nucleotides. The rate-limiting enzyme in the catabolism of 5-FU is DPD, which catalyzes the first step of pyrimidine degradation (Figure 1). Efficacy and tolerability of Capecitabine or similar drugs may therefore largely depend on ...
Pyrimidine in Biological Products

Chicken Anti-DCTD (dCMP deaminase) Polyclonal Antibody, Unconjugated from GenWay Biotech, Inc.

Description:... Tumor; Lung Diseases; Herpes Simplex Virus; Epidermoid Carcinoma; Squamous Cell Car Protein Functions: Protein Byiosynthesis; Phosphotransferases; pyrimidine Metabolism; One-Carbon Group Transferases; Dna Polymerase; Purine Metabolism; Nucleotide Sugars Metabolism; Esterases; Glycosyltransferases; Cell ...
Company:GenWay Biotech, Inc.
Pyrimidine in Biological Definition

Genetic code

... bases grouped into 2 categories, purine and pyrimidine . The purine bases adenine ( A ) and guanine ... larger and consist of two aromatic rings . The pyrimidine bases cytosine ( C ) and thymine ( T ) are ... Since transition mutations (purine to purine or pyrimidine ...

Genetic code

... bases grouped into 2 categories, purine and pyrimidine . The purine bases adenine ( A ) and guanine ... larger and consist of two aromatic rings . The pyrimidine bases cytosine ( C ) and thymine ( T ) are ... Since transition mutations (purine to purine or pyrimidine ...

Pyrimidine

... pyrimidine Chemical name pyrimidine Chemical formula C 4 H 4 N 2 ... 289-95-2 SMILES C1=NC=NC=C1 pyrimidine is a heterocyclic aromatic organic compound ...

Purine

... C CAS number 120-73-0 SMILES C1(NC=N2)=C2C=NC=N1 Purine is a heterocyclic aromatic organic compound , consisting of a pyrimidine ring fused to an imidazole ring. The general term purines also refers to substituted purines and their tautomers . Two of the bases in ...
Pyrimidine in Biological Dictionary

Uracil

... Uracil is a common and naturally occurring pyrimidine derivative. Originally discovered in 1900, it ... germ. It ... uracil n. ( Abbr. U ) A pyrimidine base, C 4 H 4 N 2 O 2 , that is an essential ... ... uracil (yʊr'əsĭl) , organic base of the pyrimidine family. ... uracil , U a ...

Thymine

... Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. As the name suggests, thymine may ... Thymine - Uracil - Guanine - Cytosine - Purine - pyrimidine ... Encyclopedia article about thymine . ... ... thymine , organic base of the pyrimidine family. Thymine was the first ...

Pyrimidine

... pyrimidine is a heterocyclic aromatic organic compound ... with two other forms of diazine. ... in the pyrimidine biosynthesis. ... pyrimidine biosynthesis. v • d • e ... Nucleotide ...

Purine

... aromatic organic compound, consisting of a pyrimidine ring fused to an imidazole ring. Purines, ... of Purine Nucleotides. De novo Synthesis of pyrimidine Nucleotides ... The names of purine nucleosides end in -osine and the names of pyrimidine ... Low Purine Diet information by ...

Cytosine

... four main bases found in DNA and RNA. It is a pyrimidine derivative, with a heterocyclic aromatic ring ... bonds ... cytosine ( ) n. ( Abbr. C ) A pyrimidine base, C 4 H 5 N 3 O, that is the constituent of ... - Uracil - Guanine - Cytosine - Purine - pyrimidine ... Information about cytosine in the free ...

Transversion

... biology, transversion refers to the substitution of a purine for a pyrimidine or vice versa . It can only be reverted by a spontaneous reversion. ... A point mutation in which a purine is replaced by a pyrimidine, or a pyrimidine ... In molecular biology, transversion refers to the ... Bargain ...

Guanine

... Nucleobases: Adenine - Thymine - Uracil - Guanine - Cytosine - Purine - pyrimidine ... Compare Cheap Prices for Guanine at NexTag.com. Find Great ... Adenine, Guanine and Hypoxanthine (examples of purine ... Guanine :a pyrimidine base ... addition to adenine and guanine , a group of chemical ... ...

RNA

... help for kids. Information about RNA in the free online English dictionary and encyclopedia. ... RNA also differs from DNA in having the pyrimidine base uracil instead of ... RNA's sister Web sites. ReligionWriters.com. ReligionLink.com. ReligionHeadlines.org ... Why join RNA ? How to ...

Ribonucleotides

... A ribonucleotide is a nucleotide in which a purine or pyrimidine base is linked to a ribose molecule. The base may be adenine (A), guanine (G), cytosine (C), or uracil (U). Note that thymine (T), ...

Nitrogenous base

... compound that owes its property as a base to the lone pair of electrons of a nitrogen atom. Notable nitrogenous bases include purine bases. pyrimidine and purine bases include the nucleobases : principally adenine, guanine, thymine, cytosine, and uracil. Adenine and Thymine/Guanine and Cytosine ...

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