Results 1 to 10 of about 148,305 (130)

Network effects lead to self-organization in metabolic cycles of self-repelling catalysts [PDF]

open access: yesPhys. Rev. Lett. 131, 128301 (2023), 2023
Mixtures of particles that interact through phoretic effects are known to aggregate if they belong to species that exhibit attractive self-interactions. We study self-organization in a model metabolic cycle composed of three species of catalytically-active particles that are chemotactic towards the chemicals that define their connectivity network.
arxiv   +1 more source

Rare forms of nephrolithiasis

open access: yesPediatria i Medycyna Rodzinna, 2019
Inborn errors of metabolism that may lead to calculus formation within the urinary tract include: adenine phosphoribosyltransferase deficiency, xanthine oxidase deficiency, orotic aciduria (acidosis) type I and alkaptonuria.
Piotr Skrzypczyk   +1 more
doaj   +1 more source

1H-NMR spectroscopy of body fluids: inborn errors of purine and pyrimidine metabolism.

open access: yesClinical Chemistry, 1999
BACKGROUND The diagnosis of inborn errors of purine and pyrimidine metabolism is often difficult. We examined the potential of 1H-NMR as a tool in evaluation of patients with these disorders.
R. Wevers   +7 more
semanticscholar   +1 more source

The large-scale organization of metabolic networks [PDF]

open access: yesNature, v407 651-654 (2000), 2000
In a cell or microorganism the processes that generate mass, energy, information transfer, and cell fate specification are seamlessly integrated through a complex network of various cellular constituents and reactions. However, despite the key role these networks play in sustaining various cellular functions, their large-scale structure is essentially ...
arxiv   +1 more source

The protein cost of metabolic fluxes: prediction from enzymatic rate laws and cost minimization [PDF]

open access: yes, 2016
Bacterial growth depends crucially on metabolic fluxes, which are limited by the cell's capacity to maintain metabolic enzymes. The necessary enzyme amount per unit flux is a major determinant of metabolic strategies both in evolution and bioengineering.
arxiv   +1 more source

Fast and accurate quantitative organic acid analysis with LC-QTOF/MS facilitates screening of patients for inborn errors of metabolism

open access: yesJournal of Inherited Metabolic Disease, 2018
Since organic acid analysis in urine with gaschromatography-mass spectrometry (GC-MS) is a time-consuming technique, we developed a new liquid chromatography-quadrupole time-of-flight mass spectrometry (LC-QTOF/MS) method to replace the classical ...

semanticscholar   +1 more source

Multi‐Omics Reveal the Metabolic Changes in Cumulus Cells During Aging

open access: yesCell Proliferation, EarlyView.
Fatty acid β‐oxidation was elevated in cumulus cells from older mice. Tryptophan metabolism in aged cumulus cells was active. Supplementing with 5‐HT could mitigate aging damage in oocytes. ABSTRACT Maternal age has been reported to impair oocyte quality.
Liangyue Shi   +6 more
wiley   +1 more source

Targeting miRNA‐1a and miRNA‐15b: A Novel Combinatorial Strategy to Drive Adult Cardiac Regeneration

open access: yesAdvanced Science, Volume 12, Issue 21, June 5, 2025.
The article explores a novel therapeutic strategy for cardiac regeneration by targeting miRNA‐1a and miRNA‐15b. Combinatorial inhibition of miR‐1a and miR‐15b enhances cardiomyocyte proliferation, improves heart function, and reduces fibrosis in myocardial infarction models.
Ting Yuan   +16 more
wiley   +1 more source

Neural Metabolic Networks: Key Elements of Healthy Brain Function

open access: yesJournal of Neurochemistry, Volume 169, Issue 6, June 2025.
This review originated from the Fourth International Society for Neurochemistry (ISN) and Journal of Neurochemistry (JNC) Flagship School (2022). Here, we describe how the specific bioenergetic profiles and metabolic exchanges between brain cells enable and gate synaptic function and behavior. Then, based on this analysis, we discuss the potential role
Nimrod Madrer   +20 more
wiley   +1 more source

Fast Reconstruction of Compact Context-Specific Metabolic Network Models [PDF]

open access: yes, 2013
Systemic approaches to the study of a biological cell or tissue rely increasingly on the use of context-specific metabolic network models. The reconstruction of such a model from high-throughput data can routinely involve large numbers of tests under different conditions and extensive parameter tuning, which calls for fast algorithms.
arxiv   +1 more source

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