Results 51 to 60 of about 28,661 (227)

An electrochemical flow analysis system for putrescine using immobilized putrescine oxidase and horseradish peroxidase

open access: yes, 2004
An electrochemical flow analysis system was optimized together with immobilized putrescine oxidase and horseradish peroxidase for putrescine measurement.
Saby, Coralie   +2 more
core   +1 more source

A Dual‐Phase Exosomal Nanotherapy Enhances Continual Efferocytosis by Coordinating Checkpoint Inhibition and Metabolic Reprogramming in Atherosclerosis

open access: yesAdvanced Science, EarlyView.
Here we developed Am@SExo, a dual‐functional engineered exosome that coordinates CD47–SIRPα checkpoint blockade with Arg1 mRNA–mediated metabolic reprogramming. Surface SIRPα promotes recognition of apoptotic cells and plaque targeting, while Arg1 expression enhances arginine–ornithine metabolism, Rac1 activation, and actin remodeling in macrophages ...
Danwen Zheng   +17 more
wiley   +1 more source

The Smell of Death: Evidence that Putrescine Elicits Threat Management Mechanisms

open access: yesFrontiers in Psychology, 2015
The ability to detect and respond to chemosensory threat cues in the environment plays a vital role in survival across species. However, little is known about which chemical compounds can act as olfactory threat signals in humans.
Arnaud eWisman, Ilan eShrira
doaj   +1 more source

Putrescine stimulates chemiosmotic ATP synthesis

open access: yes, 2006
Putrescine is a main polyamine found in animals, plants and microbes, but the molecular mechanism underlying its mode of action is still obscure. In vivo chlorophyll a fluorescence in tobacco leaf discs indicated that putrescine treatment affects the ...
Ioannidis, Nikolaos E.   +2 more
core   +1 more source

Metabolic abnormalities and reprogramming in cats with naturally occurring hypertrophic cardiomyopathy

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 1256-1270, April 2025.
Abstract Background and aims The heart is a metabolic organ rich in mitochondria. The failing heart reprograms to utilize different energy substrates, which increase its oxygen consumption. These adaptive changes contribute to increased oxidative stress.
Qinghong Li   +12 more
wiley   +1 more source

Effect of mycorrhizal fungi and foliar application of putrescine on some biochemical characteristics and biomass of basil (Ocimum ciliatum L.) in two different harvesting times [PDF]

open access: yesفیزیولوژی محیطی گیاهی, 2019
In order to investigate the effect of mycorrhizal fungi and foliar application of putrescine on some biochemical characteristics, essential oil content, and biomass of basil (Ocimumciliatum L.), a split plot in time experiment with three replications was
Sara Farsari, Mohammad Moghaddam
doaj  

Monitoring and Mitigation Strategies for Hazardous Compounds in Chinese Rice Wine (Huangjiu): A Comprehensive Review

open access: yesFood Safety and Health, EarlyView.
This review elucidates the formation pathways and detection technologies for ethyl carbamate, biogenic amines, and higher alcohols in Huangjiu. It concludes that integrated control frameworks are essential to decouple safety risks from the metabolic processes responsible for flavor development.
Lulu Liu   +5 more
wiley   +1 more source

Enzymic conversion of agmatine to putrescine in Lathyrus sativus seedlings. Purification and properties of a multifunctional enzyme (Putrescine synthase) [PDF]

open access: yes, 1981
The participation of a multifunctional enzyme (a single polypeptide with multiple catalytic activities (14)) has been demonstrated in the conversion of agmatine to putrescine in Lathyrus sativus seedlings.
Srivenugopal, K. S., Adiga, P. R.
core   +1 more source

Drought Risk in Mango and Avocado Orchards: Insights Into Plant Water Relations and Irrigation‐Related Agronomic Solutions

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT Climate change is making water availability more uncertain, with growing consequences for the productivity and long‐term sustainability of tropical and subtropical fruit orchards. Mangifera indica L. and Persea americana Mill. both require large amounts of water to sustain growth and productivity.
Eleonora Cataldo
wiley   +1 more source

Effects of Spermidine on Cell Proliferation, Migration, and Inflammatory Response in Porcine Enterocytes

open access: yesFrontiers in Bioscience-Landmark, 2022
Background: Polyamines have been demonstrated to be beneficial to porcine intestinal development. Our previous study showed that putrescine mitigates intestinal atrophy in weanling piglets and suppresses inflammatory response in porcine intestinal ...
Zi-xi Wei   +4 more
doaj   +1 more source

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