Results 101 to 110 of about 28,730 (184)

Metabolic Assessment in Human Pluripotent Stem Cell‐Derived Cerebral Organoids Using HR‐MAS NMR Spectroscopy

open access: yesNMR in Biomedicine, Volume 39, Issue 8, August 2026.
We present a direct method for evaluating metabolism in intact hPSC‐derived cerebral organoids (COs) via HR‐MAS 1H‐NMR spectroscopy. This approach suggests that COs exhibit a metabolic profile similar to in vivo human fetal brain, with high levels of lactate and hTau, low levels of NAA, and equimolar levels of Glu and Gln.
Maria Alejandra Castilla Bolanos   +9 more
wiley   +1 more source

The protective effects of cysteamine, putrescine, and the combination of cysteamine and putrescine on fibrosarcoma induced in mice with 3-methylcholanthrene [PDF]

open access: yes, 2016
In this study, the protective effects of cysteamine, putrescine, and the combination of cysteamine and putrescine were investigated in mice with fibrosarcoma induced with 3-methylcholanthrene (3-MC).
Erdağ D.   +11 more
core   +1 more source

Metabolic Signatures of Aging and Gametogenesis in Hydra oligactis

open access: yesAging Cell, Volume 25, Issue 8, August 2026.
Hydra oligactis undergoes cold‐induced sexual differentiation and aging, culminating in death. GC–MS‐based metabolite profiling revealed signatures of gametogenesis, for example, polyamine accumulation, and of aging, such as loss of cytoprotection and neurotransmitter function, including taurine depletion.
Nicki Marami‐Zonouz   +6 more
wiley   +1 more source

Climate change and crop resilience: harnessing metabolomics for predicting stress tolerance

open access: yesNew Phytologist, Volume 251, Issue 3, Page 975-995, August 2026.
Summarised methodology for metabolite biomarker discovery and genomic targets selection for those metabolites to predict high‐throughput phenotypic and agronomic traits of interest for direct uptake in breeding programmes. Summary Global warming is driving climate change to levels not experienced since the advent of agriculture, primarily due to ...
Agyeya Pratap   +3 more
wiley   +1 more source

Putrescine priming effects on chlorophyll fluorescence, antioxidant enzyme activity, and primary metabolite accumulation in maize seedlings under water deficit

open access: yesBiologia Plantarum
This study aimed to evaluate the effect of putrescine priming on the initial growth, chlorophyll fluorescence, primary metabolites accumulation, and antioxidant enzyme activities in two maize hybrids with contrasting drought tolerances. Seeds of Zea mays
C.C. Toledo   +8 more
doaj   +1 more source

Thioredoxin system modulates metabolic and stomatal responses to elevated CO2 in Arabidopsis

open access: yesNew Phytologist, Volume 251, Issue 4, Page 1774-1791, August 2026.
Integrative model of extraplastidial NADPH‐dependent thioredoxin reductase/thioredoxin system‐mediated regulation of stomatal function, redox homeostasis, and metabolic responses under ambient and elevated CO2 in Arabidopsis thaliana. Summary The NADPH‐dependent thioredoxin reductase/thioredoxin (NTR/TRX) system plays a central role in maintaining ...
Paula da Fonseca‐Pereira   +11 more
wiley   +1 more source

PTC carbamylates ornithine in addition to putrescine. [PDF]

open access: yes, 2012
(A) Approach to equilibrium in the carbamylation of ornithine (open symbols) using either OTC (squares) or PTC (triangles) from E. faecalis as catalyst and comparison with the equilibrium for putrescine carbamylation catalyzed by PTC (closed symbols ...
Fernando Gil-Ortiz (170333)   +3 more
core   +1 more source

Rhizobacteria‐Induced Systemic Priming Against Fungal Pathogens Involves Hydroxycinnamic Acid Amides

open access: yesPlant, Cell &Environment, Volume 49, Issue 8, Page 4907-4921, August 2026.
ABSTRACT The rhizosphere, a narrow region of soil surrounding roots, contains diverse microorganisms with a composition that is distinct from the surrounding soil. Some rhizosphere bacteria can trigger a heightened state of immunity in the whole plant, termed Induced Systemic Resistance (ISR).
Mackenzie Eli William Loranger   +5 more
wiley   +1 more source

A mediatorless biosensor for putrescine using multiwalled carbon namotubes [PDF]

open access: yes, 2005
Poly(diallyldimethylammonium) chloride, having a capability of dispersing multiwalled carbon nanotubes (MWCNTs), permits the modification of electrode surfaces.
Rochette, J.-F.   +3 more
core   +1 more source

Effect of pre-harvest putrescine treatment on quality and postharvest life of pear cv. Spadona

open access: yesAdvances in Horticultural Science, 2017
The study was conducted to determine the effect of pre-harvest foliar spraying with putrescine (at 0.5, 1 and 2 mM) on quality and postharvest life of Pyrus communis cv. Spadona during cold storage. Fruit quality assessment such as weight loss, firmness,
M.S. Hosseini   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy