Results 11 to 20 of about 1,571 (134)

Nucleoside deaminase: an enzymatic marker for stress erythropoiesis in the mouse [PDF]

Journal of Clinical Investigation, 1970
The level of nucleoside deaminase was determined in extracts of mouse tissues obtained during a period of accelerated erythropoiesis induced by hypoxia, hemorrhage, or the injection of phenylhydrazine. Under these conditions a striking (10- to 100-fold) elevation of the enzyme activity occurred in the spleen.
Rothman, I K, Zanjani, E D, Gordon, A S, Silber, R   +3 more
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Dextran-Linked Purine Nucleosides as Substrates and Inhibitors of Adenosine Deaminase [PDF]

European Journal of Biochemistry, 1982
Dextran-bound adenosine, inosine, and nebularine have been prepared by carbodiimide coupling of their 2',3'-O-(4-carboxyethyl-1-methylbutylidene) cyclic acetal derivatives to 6-aminohexyldextran or 12-aminododecanyldextran. The latter polymers were prepared by cyanogen-bromide activation of dextran T80 followed by reaction with 1,6-diaminohexane or 1 ...
H, Rosemeyer, E, Körnig, F, Seela
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Increased Excretion of Modified Adenine Nucleosides by Children with Adenosine Deaminase Deficiency [PDF]

Pediatric Research, 1982
We have identified seven adenine nucleosides in urines of untreated adenosine deaminase (ADA) deficient patients, four of which (adenosine, 2'-deoxyadenosine, 1-methyladenosine and N6-methyladenosine) have been previously identified in urines of normals and/or ADA deficient patients.
R, Hirschhorn, H, Ratech, A, Rubinstein, P, Papageorgiou, H, Kesarwala, E, Gelfand, V, Roegner-Maniscalco   +6 more
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Delineation of the Molecular Mechanisms of Nucleoside Recognition by Cytidine Deaminase through Virtual Screening [PDF]

ChemMedChem, 2011
AbstractCytidine deaminase (EC 3.5.4.5, CDA), an enzyme of the pyrimidine salvage pathways, is responsible for the degradation and inactivation of several cytidine‐based antitumor drugs such as cytarabine, gemcitabine, decitabine, and azacytidine. Thus, CDA inhibitors are highly sought after as compounds to be co‐administered with said drugs to improve
COSTANZI, Stefano, Vilar S, Micozzi D, CARPI, FRANCESCO MARTINO, Ferino G, VITA, Alberto, VINCENZETTI, Silvia   +6 more
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Inhibition of Escherichia coli cytidine deaminase by a phosphapyrimidine nucleoside.

Journal of Biological Chemistry, 1984
The nature of the interaction between Escherichia coli cytidine deaminase and the phosphapyrimidine nucleoside 1 has been studied kinetically and spectrophotometrically. Compound 1 was designed as a transition-state analog, and is a potent, slow-binding inhibitor of cytidine deaminase (Ashley, G. W., and Bartlett, P. A. (1982) Biochem. Biophys.
G W, Ashley, P A, Bartlett
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Inosine‐Triphosphate‐Pyrophosphatase Activity as a Potential Predictor of Methotrexate Remission in Juvenile Idiopathic Arthritis

Arthritis &Rheumatology, EarlyView.
Objective Methotrexate (MTX) is the first‐line therapy for juvenile idiopathic arthritis (JIA), but up to 40% of patients do not respond to it. Low inosine triphosphate pyrophosphatase (ITPA) activity has been associated with reduced clinical remission. We investigated the role and underlying mechanisms of ITPA in vitro. Methods ITPA enzymatic activity
Sofia Sindici Forgiarini, Marianna Lucafò, Debora Curci, Davide Selvestrel, Valentina Moressa, Sofia Pagarin, Barbara Bellich, Martina Franzin, Alberto Tommasini, Mara L. Becker, Laura B. Ramsey, Susan D. Thompson, Carl D. Langefeld, Federica Corba, Edoardo Marrani, Gabriele Simonini, Gabriele Stocco, Giuliana Decorti, Andrea Taddio, Serena Pastore   +19 more
wiley   +1 more source

Pharmacogenomic profiling of the efficacy of gemcitabine monotherapy in metastatic pancreatic cancer: Subgroup analysis of the GENESECT study

British Journal of Clinical Pharmacology, EarlyView.
Aim In the GENESECT study, no significant gemcitabine (GEM) metabolism‐related germline genetic polymorphisms (GPs) were identified because approximately 70% of patients received combination therapy with nab‐paclitaxel, which has metabolic pathways different from GEM.
Takashi Yokokawa, Daiki Tsuji, Masahiro Hatori, Kazuyoshi Kawakami, Masahiko Nakao, Takuya Yano, Yuichiro Arakawa, Keisuke Matsuo, Yasukata Ohashi, Masato Ozaka, Naoki Sasahira, Yasuhiko Sakata, Yuki Kogure, Shinya Tamaki, Atsushi Wada, Yusuke Taki, Wataru Suzuki, Kazuo Kobayashi, Hiroshi Ishii, Kunihiko Itoh, Masakazu Yamaguchi, Kenichi Suzuki   +21 more
wiley   +1 more source

Combined familial adenosine deaminase and purine nucleoside phosphorylase deficiencies. [PDF]

Archives of Disease in Childhood, 1988
We studied an Arab family in which two infants died of severe combined immunodeficiency caused by adenosine deaminase (ADA) deficiency. One infant had purine nucleoside phosphorylase (PNP) activity in the leucocytes only half that of normal. Four other infant siblings had previously died from infections before the age of 2 months.
A, Shanon, S, Levin, F, Holtzman, F, Brock-Sinai, A, Abu-Said   +4 more
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Microbiome—pancreatic cancer crosstalk: From tumor biology to therapeutic intervention

iMetaOmics, EarlyView.
The intratumoral microbiome acts as a critical regulator in pancreatic cancer progression and therapeutic resistance. This comprehensive review delineates the origins of pancreatic microbes, elucidates their multifaceted mechanisms in driving immune suppression, metabolic reprogramming, and stromal desmoplasia, and highlights the clinical potential of ...
Yuqin Xie, Jingyuan Ye, Sheng Wang, Maoyun Liu, Fengsheng Dai, Mingzhen Bai, Yi Wang, Athena Savoji, Yu Wang, Phillip B. Hylemon, Huiping Zhou, Hui Li, Dewei Li   +12 more
wiley   +1 more source

Lymphospecific toxicity in adenosine deaminase deficiency and purine nucleoside phosphorylase deficiency: Possible role of nucleoside kinase(s) [PDF]

Proceedings of the National Academy of Sciences, 1977
Inherited deficiencies of the enzymes adenosine deaminase (adenosine aminohydrolase; EC 3.5.4.4) and purine nucleoside phosphorylase (purine-nucleoside:orthophosphate ribosyltransferase; EC 2.4.2.1) preferentially interfere with lymphocyte development while sparing most other organ systems.
D A, Carson, J, Kaye, J E, Seegmiller
openaire   +2 more sources