Results 111 to 120 of about 681,334 (361)

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  

Fetal oxygen delivery and consumption and blood gases in relation to gestational age [PDF]

arXiv, 2021
Fetal oxygen delivery and consumption and blood gases in relation to gestational age. Oxygen crosses the placenta by diffusion and placental permeability to O$_2$ is high. Thus, the fetus receives adequate amounts, but vascular Po$_2$ is much lower than after birth. Studies of sustained fetal hypoxemia and acute 40-45% hemorrhage show that hypoxemia is
arxiv  

Dual‐Nanoparticle Engineered Hydrogel Reverses Bicellular Oxidative Stress to Accelerate Diabetic Fracture Healing

Advanced Functional Materials, EarlyView.
CD105‐LNPs and PS‐LNPs can deliver α‐lipoic acid to bone marrow mesenchymal stem cells and bone marrow‐derived macrophages, reversing high glucose‐induced oxidative stress while enhancing osteogenesis and M2 polarization. Integrating both nanoparticles into glucose‐responsive hyaluronic acid hydrogel forms DLNPs@HA hydrogel, which accelerates diabetic ...
Yanzhi Zhao, Weixian Hu, Shengming Zhang, Yuheng Liao, Kangkang Zha, Chenyan Yu, Zhenhe Zhang, Wenqian Zhang, Bobin Mi, Faqi Cao, Guohui Liu, Wu Zhou   +11 more
wiley   +1 more source

Glutamate-induced depression of EPSP–spike coupling in rat hippocampal CA1 neurons and modulation by adenosine receptors [PDF]

, 2010
The presence of high concentrations of glutamate in the extracellular fluid following brain trauma or ischaemia may contribute substantially to subsequent impairments of neuronal function.
Alici, Andersen, Baratte, Bazhenov, Behan, Benveniste, Bernard, Bernard, Brunedge, Canhão, Carlier, Cash, Clement, Connick, Costenla, Coulter, Cunha, Cunha, Cunha, Cunha, Dahl, Daoudal, Davies, de Mendonça, de Mendonça, de Mendonça, Englund, Ferguson, Fontinha, Forghani, Frenguelli, Frenguelli, Fujii, Fujii, Greiner, Heurteaux, Hoehn, Hülsmann, Jester, Jones, Kitagawa, Klishin, Kukley, Latini, Latini, Lau, Lee, Limbrick, Liu, Lopes, Macgregor, Manzoni, Moore, Nikbakht, Nishizawa, O’Kane, O’Kane, Pedata, Perez-Pinzon, Pugliese, Pugliese, Ribeiro, Schubert, Schurr, Sebastião, Sebastião, Sekino, Sperlagh, Stone, Stone, Szatkowski, Taube, Vizi, Von Lubitz, Wall, Wallis, Wirkner, Wirkner   +77 more
core   +1 more source

Receptor–Receptor Interactions of G Protein-Coupled Receptors in the Carotid Body: A Working Hypothesis

Frontiers in Physiology, 2018
In the carotid body (CB), a wide series of neurotransmitters and neuromodulators have been identified. They are mainly produced and released by type I cells and act on many different ionotropic and metabotropic receptors located in afferent nerve fibers,
Andrea Porzionato, Elena Stocco, Diego Guidolin, Luigi Agnati, Veronica Macchi, Raffaele De Caro   +5 more
doaj   +1 more source

3D Bioprinted Head and Neck Squamous Cell Carcinoma (HNSCC) Model Using Tunicate Derived Nanocellulose (NC) Bioink

Advanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
A 3D bioprinted HNSCC model for use in anti‐cancer drug testing is established in proof‐of‐concept. The innovative tunicate‐derived nanocellulose hydrogel proved to be a viable alternative to gelatin‐based hydrogel, offering improved bioprintability for HNSCC model establishment.
Alexya Azhakesan, Johann Kern, Ankit Mishra, Christine Selhuber‐Unkel, Annette Affolter, Paul Gatenholm, Nicole Rotter, Karen Bieback   +7 more
wiley   +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  

Bioengineering a Patient‐Derived Vascularized Lung Tumor‐on‐Chip Model to Decipher Immunomodulation by the Endothelium

Advanced Healthcare Materials, EarlyView.
Most in vitro cancer models lack cellular diversity, functional complexity, and clinical relevance. This work highlights the generation of an innovative dynamic tetraculture with autologous patient‐derived cells within a vascularized tumor‐on‐chip, as well as the recapitulation of endothelial anergy features induced by the tumor microenvironment ...
Christine Lansche, Ségolène Ladaigue, Giacomo Gropplero, Nicolas Zimmermann, Martin Nurmik, Irina Veith, Manh‐Louis Nguyen, Solenn Brosseau, Nicolas Poté, Pierre Mordant, Arnaud Roussel, Fathia Mami‐Chouaib, Fatima Mechta‐Grigoriou, Gérard Zalcman, Fabrice Soncin, Stéphanie Descroix, Maria Carla Parrini   +16 more
wiley   +1 more source

Enzymatic regeneration of adenosine triphosphate cofactor [PDF]

, 1974
Regenerating adenosine triphosphate (ATP) from adenosine diphosphate (ADP) by enzymatic process which utilizes carbamyl phosphate as phosphoryl donor is technique used to regenerate expensive cofactors.
Marshall, D. L.
core   +1 more source

Adenosine to inosine editing by ADAR2 requires formation of a ternary complex on the GluR-B R/G site [PDF]

, 2002
RNA editing by members of the ADAR (adenosine deaminase that acts on RNA) enzyme family involves hydrolytic deamination of adenosine to inosine within the context of a double-stranded pre-mRNA substrate.
Collins, Cynthia H., Jaikaran, Dominic C. J., MacMillan, Andrew M.   +2 more
core   +1 more source