Results 51 to 60 of about 27,209 (247)

Anatomical Distribution of Nucleoside System in the Human Brain and Implications for Therapy [PDF]

, 2013
Nucleosides have a wide range of physiological and pathophysiological roles in the human brain as modulators of a variety of neural functions. For example, adenosine, inosine, guanosine, and uridine participate in the mechanisms underlying memory ...
Dobolyi, Árpád, Kovács, Zsolt
core   +1 more source

Propolis Exerts an Anti-Inflammatory Effect on PMA-Differentiated THP-1 Cells via Inhibition of Purine Nucleoside Phosphorylase

Metabolites, 2019
Previous research has shown that propolis has immunomodulatory activity. Propolis extracts from different geographic origins were assessed for their anti-inflammatory activities by investigating their ability to alter the production of tumour necrosis ...
Abdulmalik M. Alqarni, Kanidta Niwasabutra, M. Sahlan, H. Fearnley, J. Fearnley, V. Ferro, D. Watson   +6 more
semanticscholar   +1 more source

Control Strategies in Guanine Biocrystallization

Angewandte Chemie, Volume 138, Issue 18, 27 April 2026.
Biological guanine crystals produce spectacular photonic phenomena in animals and hold great promise as new, sustainable optical materials. We review how organisms precisely control the structure, morphologies, and resulting optical properties of these crystals using a set of ingenious ‘design’ strategies, including control of pH, template‐directed ...
Shashanka S. Indri, Avital Wagner, Benjamin A. Palmer   +2 more
wiley   +2 more sources

Upregulation of inducible NO synthase by exogenous adenosine in vascular smooth muscle cells activated by inflammatory stimuli in experimental diabetes [PDF]

, 2016
BACKGROUND: Adenosine has been shown to induce nitric oxide (NO) production via inducible NO synthase (iNOS) activation in vascular smooth muscle cells (VSMCs). Although this is interpreted as a beneficial vasodilating pathway in vaso-occlusive disorders,
Cignarella, Andrea, Gaion, ROSA MARIA, Malorgio, Francesca, Nassi, Alberto, Tedesco, Serena   +4 more
core   +2 more sources

Challenges of drug resistance in the management of pancreatic cancer [PDF]

, 2010
The current treatment of choice for metastatic pancreatic cancer involves single agent gemcitabine or combination of gemcitabine with capecitabine and erlotinib (tyrosine kinase inhibitor).
Akada, Allison, Almoguera, Andreetta, Arai, Arlt, Arteaga, Arumugam, Asano, Bachem, Baldwin, Banerjee, Bartsch, Bergers, Best, Bold, Bondar, Buck, Burris, Chakravarti, Chakravarti, Choi, Cunningham, Cunningham, Dancer, Dong, Duxbury, Duxbury, Duxbury, Duxbury, Engelman, Feldmann, Ferrero, Galmarini, Geyer, Giovannetti, Goan, Greer, Hagmann, Hahn, Henke, Hruban, Humeniuk, Ischenko, Ishikawa, Itoi, Jansen, Karapetis, Kindler, Kong, Koopman, Kulik, Lei, Lemoine, Liau, Liau, Longley, Mackey, Mackey, Mackey, Mahon, Mamaghani, Marechal, Marmor, Martin Clynes, Mata, Maxwell, Mendelsohn, Meropol, Miwa, Moertel, Molina-Arcas, Moore, Morgillo, Moriyama, Muerkoster, Muerkoster, Nakahira, Nakajima, Nakano, Naomi Walsh, Nishimura, Oguri, Okamoto, Okumura, Olive, O’Driscoll, Pao, Park, Park, Peters, Plunkett, Ray McDermott, Ritzel, Rizwan Sheikh, Robert O’Connor, Ruggeri, Safran, Saito, Sakamoto, Schuller, Sebastiani, Shah, Shi, Simon, Spratlin, Takao, Takebayashi, Treat, Tsukamoto, Tzeng, Vaishampayan, Van Cutsem, van der Wilt, Wang, Wang, Wang, Xiong, Yamasaki, Yokoi   +119 more
core   +1 more source

Design and Synthesis of New Modified Flexible Purine Bases as Potential Inhibitors of Human PNP

Molecules, 2023
The great interest in studying the structure of human purine nucleoside phosphorylase (hPNP) and the continued search for effective inhibitors is due to the importance of the enzyme as a target in the therapy of T-cell proliferative diseases. In addition,
Anastasia Khandazhinskaya, Ilja Fateev, Barbara Eletskaya, Anna Maslova, Irina Konstantinova, Katherine Seley-Radtke, Sergey Kochetkov, Elena Matyugina   +7 more
doaj   +1 more source

Some inhibitors of purine nucleoside phosphorylase [PDF]

Biomeditsinskaya Khimiya, 2011
Purine nucleoside phosphorylase (PNP) catalyzes reversible phosphorolysis of purine deoxy- and ribonucleosides with formation (d)Rib-1-P and corresponding bases. PNP plays a leading role in the cell metabolism of nucleosides and nucleotides, as well as in maintaining the immune status of an organism.
L G, Pogosian, L S, Nersesova, M G, Gazariants, Z S, Mkrtchian, Zh I, Akopian   +4 more
openaire   +2 more sources

De novo assembly and transcriptome analysis of Plasmodium gallinaceum identifies the Rh5 interacting protein (ripr), and reveals a lack of EBL and RH gene family diversification [PDF]

, 2015
BACKGROUND: Malaria parasites that infect birds can have narrow or broad host-tropisms. These differences in host specificity make avian malaria a useful model for studying the evolution and transmission of parasite assemblages across geographic ranges ...
Lauron, Elvin J, Sehgal, Ravinder N.M., Taffner, Samantha M, Yeang, Han Xian Aw   +3 more
core   +13 more sources

Investigating the Role of Guanosine on Human Neuroblastoma Cell Differentiation and the Underlying Molecular Mechanisms

Frontiers in Pharmacology, 2021
Neuroblastoma arises from neural crest cell precursors failing to complete the process of differentiation. Thus, agents helping tumor cells to differentiate into normal cells can represent a valid therapeutic strategy.
Natale Belluardo, Giuseppa Mudò, Valentina Di Liberto, Monica Frinchi, Daniele F. Condorelli, Ugo Traversa, Francisco Ciruela, Francisco Ciruela, Renata Ciccarelli, Renata Ciccarelli, Patrizia Di Iorio, Patrizia Di Iorio, Patricia Giuliani, Patricia Giuliani   +13 more
doaj   +1 more source

An improved technique for isolated perfusion of rat livers and an evaluation of perfusates [PDF]

, 1992
We have modified the apparatus for isolated rat liver perfusion (IPRL) in order to be able to perform two perfusions simultaneously. In addition, we studied the quality and stability of livers by comparison of five different perfusates: Blood (Group A ...
Liu, T, Mischinger, HJ, Nakamura, K, Rao, PN, Rubin, R, Starzl, TE, Todo, S, Walsh, TR   +7 more
core   +1 more source