Results 61 to 70 of about 129,353 (325)

Reversible Parahydrogen Induced Hyperpolarization of 15N in Unmodified Amino Acids Unraveled at High Magnetic Field

open access: yesAdvanced Science, 2023
Amino acids (AAs) and ammonia are metabolic markers essential for nitrogen metabolism and cell regulation in both plants and humans. NMR provides interesting opportunities to investigate these metabolic pathways, yet lacks sensitivity, especially in case
Ewoud Vaneeckhaute   +4 more
doaj   +1 more source

Interfacing Liquid State Hyperpolarization Methods with NMR Instrumentation

open access: yesJournal of Magnetic Resonance Open, 2022
Advances in liquid state hyperpolarization methods have enabled new applications of high-resolution NMR spectroscopy. Utilizing strong signal enhancements from hyperpolarization allows performing NMR spectroscopy at low concentration, or with high time ...
Pierce Pham   +3 more
doaj   +1 more source

Insights into the molecular mechanism for hyperpolarization-dependent activation of HCN channels

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2018
Significance Unlike most other voltage-activated ion channels, hyperpolarization-activated, cyclic nucleotide-gated (HCN) channels open in response to hyperpolarizing membrane voltages.
G. Flynn, W. N. Zagotta
semanticscholar   +1 more source

Toward C13 hyperpolarized biomarkers produced by thermal mixing with hyperpolarized X129e [PDF]

open access: yesThe Journal of Chemical Physics, 2009
The C13 NMR signal of acetic acid 1-C13-AcH is enhanced by polarization transfer from hyperpolarized X129e using a thermal mixing procedure. 1-C13-AcH acid and hyperpolarized X129e are mixed as gases to disperse X129e in the acetic acid. The mixture is frozen with liquid N2 at 0.5 T.
Natalia, Lisitza   +5 more
openaire   +2 more sources

Generalizing, Extending, and Maximizing Nitrogen-15 Hyperpolarization Induced by Parahydrogen in Reversible Exchange

open access: yesThe journal of physical chemistry. C, Nanomaterials and interfaces, 2017
Signal Amplification by Reversible Exchange (SABRE) is a fast and convenient NMR hyperpolarization method that uses cheap and readily available para-hydrogen as a hyperpolarization source. SABRE can hyperpolarize protons and heteronuclei.
J. Colell   +10 more
semanticscholar   +1 more source

NKCC1: A key regulator of glioblastoma progression

open access: yesMolecular Oncology, EarlyView.
Glioblastoma (GBM) progression is driven by disrupted chloride cotransporter homeostasis. NKCC1 is highly expressed in stem‐like, astrocytic, and progenitor cells, correlating with earlier recurrence, while overall survival remains unaffected. NKCC1 serves as a prognostic marker and potential therapeutic target, linking chloride transporter imbalance ...
Anja Thomsen   +5 more
wiley   +1 more source

Dynamic mechanism of multiple bursting patterns in a whole-cell multiscale model with calcium oscillations

open access: yesJournal of Biological Dynamics, 2021
The dynamic mechanism of a whole-cell model containing electrical signalling and two-compartment Ca $ ^{2+} $ signalling in gonadotrophs is investigated.
Xiaowen Xiong, Yanqiu Li, Dongmei Zheng
doaj   +1 more source

Synthetic Studies Toward [1-13C]Pyruvate

open access: yesJournal of Isotopes, 2023
Magnetic resonance imaging (MRI) is limited in clinical application due to its low sensitivity. Hyperpolarization technology overcomes this limitation by enhancing molecular MRI signal.
QING Jing;JIA Xuelei;CHEN Kai;DAI Desheng;LI Guowei
doaj   +1 more source

Effects of methamphetamine on locomotor activity and thalamic gene expression in leptin-deficient obese mice [PDF]

open access: yes, 2017
Leptin is an adipose-derived hormone that regulates energy balance. Leptin receptors are expressed in extrahypothalamic sites and several reports showed that leptin can influence feeding and locomotor behavior via direct actions on dopaminergic neurons ...
Bisagno, Veronica   +3 more
core   +2 more sources

Nanodiamond-enhanced MRI via in situ hyperpolarization

open access: yesNature Communications, 2017
Nanodiamonds are of interest as nontoxic substrates for targeted drug delivery and as highly biostable fluorescent markers for cellular tracking. Beyond optical techniques, however, options for noninvasive imaging of nanodiamonds in vivo are severely ...
D. Waddington   +10 more
semanticscholar   +1 more source

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