Excited state dynamics in DNA double helices [PDF]
arXiv, 2006 Recent ultrafast experiments have implicated that intrachain base-stacking rather than base-pairing mediate the fate and transport of photoexcited species in DNA chains. Here use an $SU(2)\otimes SU(2)$ lattice model which incorporates both intrachain and interchain electronic interactions to study the quantum mechanical evolution of an initial ...
arxiv
Purinergic signalling: past, present and future [PDF]
, 2009 The discovery of non-adrenergic, non-cholinergic neurotransmission in the gut and bladder in the early 1960's is described as well as the identification of adenosine 5'-triphosphate (ATP) as a transmitter in these nerves in the early 1970's.
Burnstock, G
core +1 more source
Attenuation of ischemic liver injury by prostaglandin E
, 1998 Background: Prostaglandin has been reported to have protective effects against liver injury. Use of this agent in clinical settings, however, is limited because of drugrelated side effects.
Ishizaki, N +8 more
core +1 more source
, 2010 Production of deoxy-thymidine-diphosphate (TDP)-sugars as substrates of glycosyltransferases, has been one of main hurdles for combinatorial antibiotic biosynthesis, which combines sugar moiety with aglycon of various antibiotics. Here, we report the one-
Kang, Young Bok (Abraham) +10 more
core
Pump-induced platelet aggregation with subsequent hypotension: Its mechanism and prevention with clopidogrel [PDF]
, 2006 ObjectivesUse of extracorporeal circuits in cardiopulmonary bypass and hemodialysis often causes bleeding problems and hypotension. As shown previously, this might be caused by activation of blood platelets due to pumping.
Borgdorff, Piet, Tangelder, Geert Jan
core +1 more source
Frenkel Exciton Model of Ultrafast Excited State Dynamics in AT DNA Double Helices [PDF]
J. Photochem. and Photobiol. A 190, 328-334 (2007), 2006 Recent ultrafast experiments have implicated intrachain base-stacking rather than base-pairing as the crucial factor in determining the fate and transport of photoexcited species in DNA chains. An important issue that has emerged concerns whether or not a Frenkel excitons is sufficient one needs charge-transfer states to fully account for the dynamics.
arxiv
Dual control of vascular tone and remodelling by ATP released from nerves and endothelial cells [PDF]
, 2008 Purinergic signalling is important both in short-term control of vascular tone and in longer-term control of cell proliferation, migration and death involved in vascular remodelling.
Burnstock, G
core
NMR Dynamics Investigation of Ligand-Induced Changes of Main and Side-Chain Arginine N-H’s in Human Phosphomevalonate Kinase [PDF]
, 2010 Phosphomevalonate kinase (PMK) catalyzes phosphoryl transfer from adenosine triphosphate (ATP) to mevalonate 5-phosphate (M5P) on the pathway for synthesizing cholesterol and other isoprenoids.
Cai, Sheng +4 more
core +2 more sources
Pilot study of electrochemical reduction of selected nucleotides and double-stranded DNA at pristine micro-/ultrananocrystalline boron-doped diamond electrodes at very negative potentials [PDF]
Pristine polycrystalline boron-doped diamond electrodes (BDDEs) -- microcrystalline (B-MCDE) and ultrananocrystalline (B-UNCDE) were applied for the electrochemical reduction of several selected purine nucleotides -- Guanosine 5'-monophosphate (GMP), 2'-Deoxyguanosine 5'-monophosphate (dGMP), Adenosine 5'-monophosphate (AMP), Adenosine 5'-diphosphate ...
arxiv +1 more source
Long-term (trophic) purinergic signalling: purinoceptors control cell proliferation, differentiation and death [PDF]
, 2010 The purinergic signalling system, which uses purines and pyrimidines as chemical transmitters, and purinoceptors as effectors, is deeply rooted in evolution and development and is a pivotal factor in cell communication.
A Gartland +139 more
core +2 more sources