Results 71 to 80 of about 74,149 (232)

Can adenine nucleotides predict primary nonfunction of the human liver homograft? [PDF]

, 1994
Sixty-eight primary liver grafts were analyzed to see whether adenine nucleotides (AN: ATP, ADP, and AMP) or purine catabolites (PC: adenosine, inosine, hypoxanthine, and xanthine) of tissue or effluent can predict primary graft nonfunction.
Bronsther, O, Fujita, S, Hamamoto, I, Irish, W, Nakamura, K, Starzl, TE, Takaya, S, Todo, S, Van Gulik, TM   +8 more
core   +1 more source

Hypoxanthine Derivatives in Experimental Infections [PDF]

Canadian Journal of Infectious Diseases and Medical Microbiology, 1992
In vivo treatment with parenterally administered hypoxanthine derivatives, notably ST 789, was able to protect cyclophosphamide‐immunosuppressed mice against experimental infections with both bacterial and fungal pathogens. However, the mechanisms accounting for these effects of hypoxanthine derivatives remain to be fully established. In fact, only the
G. Tonietti, Claudio De Simone, Edoardo Arrigoni Martelli, Roberto Giacomelli, P. Foresta, Vito Ruggiero, Giuseppe Famularo, Emilio Jirillo   +7 more
openaire   +2 more sources

Purine Chemistry in the Early RNA World at the Origins of Life: From RNA and Nucleobases Lesions to Current Key Metabolic Routes

ChemBioChem, EarlyView.
In the nascent processes of the beginnings and evolution of life, nucleobases and especially purines, ribonucleos(t)ides and primitive RNAs have been continuously modified. A RNA‐peptide world and key metabolic pathways probably have emerged from the corresponding chemical modifications resulting from adenine deamination, purine alkylation and ...
Jean‐Luc Décout, Marie‐Christine Maurel   +1 more
wiley   +1 more source

First case of hereditary xanthinuria in a Moroccan family

PAMJ Clinical Medicine, 2019
The xanthinuria is a rare hereditary autosomal recessive disease. It is related to xanthine oxidase deficiency also known as xanthine dehydrogenase, an enzyme involved in the metabolism of purine bases.
Aicha Ezoubeiri, Asma Labaali, Naima Fdil, Jean-François Benoist, Laila Chabaa   +4 more
doaj   +1 more source

Late diagnosis of Lesch–Nyhan disease complicated with end-stage renal disease and tophi burst: a case report

Renal Failure, 2020
Background Lesch–Nyhan disease (LND) is a rare X-linked recessive inborn error of purine metabolism. Late diagnosis of LND may cause significant morbidity. LND cases have never been reported in Indonesia.
Cahyani Gita Ambarsari, Daffodilone Cahyadi, Lenny Sari, Oryza Satria, Felly Sahli, Thyrza Laudamy Darmadi, Agustina Kadaristiana   +6 more
doaj   +1 more source

Analysis of Purine Metabolism to Elucidate the Pathogenesis of Acute Kidney Injury in Renal Hypouricemia

Biomedicines, 2022
Renal hypouricemia is a disease caused by the dysfunction of renal urate transporters. This disease is known to cause exercise-induced acute kidney injury, but its mechanism has not yet been established.
Daisuke Miyamoto, Nana Sato, Koji Nagata, Yukinao Sakai, Hitoshi Sugihara, Yuki Ohashi, Blanka Stiburkova, Ivan Sebesta, Kimiyoshi Ichida, Ken Okamoto   +9 more
doaj   +1 more source

Advances in Isotope Labeling for Solution Nucleic Acid Nuclear Magnetic Resonance Spectroscopy

ChemPlusChem, EarlyView.
Recent advances in the field of nucleic acid nuclear magnetic resonance (NMR) are presented. Stable isotope labeling protocols and new approaches to segmentally label nucleic acid with NMR‐active residues are summarized. The novel methods will have a strong impact on the future of nucleic acid NMR and the characterization of structure and dynamics of ...
Stefan Hilber, Solomon Kojo Attionu, Theodore Kwaku Dayie, Christoph Kreutz   +3 more
wiley   +1 more source

Interpretation of in vitro concentration‐response data for risk assessment and regulatory decision‐making: Report from the 2022 IWGT quantitative analysis expert working group meeting

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Quantitative risk assessments of chemicals are routinely performed using in vivo data from rodents; however, there is growing recognition that non‐animal approaches can be human‐relevant alternatives. There is an urgent need to build confidence in non‐animal alternatives given the international support to reduce the use of animals in toxicity ...
Marc A. Beal, Guangchao Chen, Kerry L. Dearfield, Min Gi, Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Alexandra S. Long, David P. Lovell, Barbara L. Parsons, Stefan Pfuhler, John Wills, Andreas Zeller, George Johnson, Paul A. White   +14 more
wiley   +1 more source

Arylmethylamino steroids as antiparasitic agents [PDF]

, 2017
In search of antiparasitic agents, we here identify arylmethylamino steroids as potent compounds and characterize more than 60 derivatives. The lead compound 1o is fast acting and highly active against intraerythrocytic stages of chloroquine-sensitive ...
Becker, Katja, Beckmann, Svenja, Blandin, Stéphanie, Brakhage, Axel, Burrows, Jeremy, Dahse, Hans-Martin, Davioud-Charvet, Elisabeth, Elhabiri, Mourad, Goetz, Alice-Anne, Grevelding, Christoph G., Jortzik, Esther, Krieg, Reimar, Nuryyeva, Selbi, Pinkerton, Anthony B., Quack, Thomas, Rahbari, Mahsa, Rahlfs, Stefan, Schönecker, Bruno, Voigt, Kerstin, Wittlin, Sergio   +19 more
core   +3 more sources

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

Environmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons, Marc A. Beal, Kerry L. Dearfield, George R. Douglas, Min Gi, B. Bhaskar Gollapudi, Robert H. Heflich, Katsuyoshi Horibata, Michelle Kenyon, Alexandra S. Long, David P. Lovell, Anthony M. Lynch, Meagan B. Myers, Stefan Pfuhler, Alisa Vespa, Andreas Zeller, George E. Johnson, Paul A. White   +17 more
wiley   +1 more source