Results 111 to 120 of about 5,008,445 (258)

Initial Experience of Metabolic Imaging with Hyperpolarized [1-13C]pyruvate MRI in Kidney Transplant Patients [PDF]

BACKGROUND: Kidney transplant is the treatment of choice for patients with end-stage renal disease. Early detection of allograft injury is important to delay or prevent irreversible damage. PURPOSE: To investigate the feasibility of hyperpolarized (HP) [1-13C]pyruvate MRI for assessing kidney allograft metabolism. SUBJECTS: 6 participants (mean age, 45.
arxiv   +1 more source

Contrasting functional responses of benthic and hyporheic stream biofilms to light availability and macronutrient stoichiometry

Limnology and Oceanography, EarlyView.
Abstract Nutrient dynamics in headwater streams are governed by benthic and hyporheic biofilms, with carbon (C) : nitrogen (N) : phosphorus (P) ratios driving the heterotrophic microbial biofilm development through nutrient limitation. Furthermore, heterotrophic responses to changes in C : N : P ratios are probably modulated by autotrophic responses to
Anika Große, Daniel Graeber, Patrick Fink, Alexander J. Reisinger, Norbert Kamjunke, Michele Meyer, Maja Ilić, Dietrich Borchardt, Nuria Perujo   +8 more
wiley   +1 more source

The biofilm matrix of Pseudomonas sp. OX1 grown on phenol is mainly constituted by alginate oligosaccharides [PDF]

, 2006
The structure of the major constituent of the biofilm matrix produced by Pseudomonas sp. OX1, when grown on phenol as the sole carbon source is described.
ALFIERI, FABIANA, CAFARO, VALERIA, DI DONATO, ALBERTO, LANZETTA, ROSA, LEONE, SERENA, MOLINARO, ANTONIO, PARRILLI, MICHELANGELO   +6 more
core   +1 more source

From Reduction To Remediation: Sustainable Use of Algal Fibrous Mats for Silver Nanoparticle Synthesis and Dye Removal

Macromolecular Rapid Communications, EarlyView.
Biogenically synthesized Ag nanoparticles exhibit antibacterial activity. Post‐reduction, the Ag‐decorated algal nanofibers, potentially a secondary pollutant, are repurposed for photocatalytic dye degradation, highlighting a sustainable approach for both nanoparticle synthesis and environmental remediation.
Fatma Rabia Karaduman, Betül Öztürk Köksal, Ayşegül Ülkü Metin, Nesrin Horzum   +3 more
wiley   +1 more source

Sustainable synthesis of α-ketoglutaric and methanetriacetic acids from biomass feedstocks

Nature Communications
α-Ketoglutaric acid (KGA) and methanetriacetic acid (MTA) are important multi-functional carboxylic acids with versatile applications. However, their synthetic processes are still not green and efficient.
Cheng-Bin Hong, Wangde Hua, Lieke Liu, Haichao Liu   +3 more
doaj   +1 more source

Quantitative model for $^{13}$C tracing applied to citrate production and secretion of prostate epithelial tissue [PDF]

arXiv, 2019
Healthy human prostate epithelial cells have the unique ability to produce and secrete large amounts of citrate into the lumen of the prostate. Citrate is a Krebs cycle metabolite produced in the condensation reaction between acetyl-CoA and oxaloacetate in the mitochondria of the cell. With the application of $^{13}$C enriched substrates, such as $^{13}
arxiv  

Pyruvic acid levels in serum and saliva: A new course for oral cancer screening?

Journal of Oral and Maxillofacial Pathology, 2016
Objective: Cancerous cells show increased glycolysis rate. This will increase overall levels of pyruvate as it is one of the end products of glycolysis.
Manohara A. Bhat, K. Prasad, D. Trivedi, BR Rajeev, Hemant Battur   +4 more
semanticscholar   +1 more source

3D virtual biopsy of in vivo pH and metabolism using PRESS and semi‐LASER MRS of hyperpolarized 13C nuclei

Magnetic Resonance in Medicine, EarlyView.
Abstract Purpose To develop and evaluate sequences for multi‐voxel magnetic resonance spectroscopy using hyperpolarized molecules. Methods A standard single voxel PRESS sequence was extended to acquire multiple voxels consecutively. Its SNR was compared against a 2D FID‐CSI with both 1H and hyperpolarized 13C nuclei in phantoms and in a healthy mouse ...
Wolfgang Gottwald, Luca Nagel, Martin Grashei, Sebastian Bauer, Nadine Setzer, Florian Gaksch, Sandra Sühnel, Jason G. Skinner, Rickmer Braren, Irina Heid, Geoffrey J. Topping, Franz Schilling   +11 more
wiley   +1 more source

Free Energy of Activation for the Comorosan Effect [PDF]

arXiv, 2007
Initial reaction rate data for lactic dehydrogenase / pyruvate, lactic dehydrogenase / lactate and malic dehydrogenase / malate enzyme reactions were analyzed to obtain activation free energy changes of -329, -195 and -221 cal/mole, respectively, for rate increases associated with time-specific irradiation of the crystalline substrates prior to ...
arxiv  

The role of gut microbiota‐derived metabolites in neuroinflammation

Neuroprotection, EarlyView.
Gut microbiota‐derived metabolites accumulate in the brain, activating or inhibiting microglia and astrocytes, which affects neuroinflammatory progression. The gut microbiota converts the diet into a variety of metabolites, including bile acid, trimethylamine N‑oxide (TMAO), and indole.
Lingjie Mu, Yijie Wang
wiley   +1 more source