Results 81 to 90 of about 58,354 (282)

Polyamine Depletion with Two Different Polyamine Analogues Causes DNA Damage in Human Breast Cancer Cell Lines [PDF]

open access: yes, 2008
It is well known that the positively charged polyamines have a DNA-stabilizing function and that polyamine depletion alters chromatin function. We have previously shown that polyamine depletion causes an S phase prolongation, and others have shown that ...
Oredsson, Stina,   +3 more
core   +3 more sources

Efficient Adsorption‐Based Direct Air Capture Via Triply Periodic Minimal Surface Architectures

open access: yesAdvanced Science, EarlyView.
Architected triply periodic minimal surface (TPMS) contactors reshape direct air capture by replacing straight‐channel diffusion limits with convection‐enhanced CO2 transport. Chaotic advection thins boundary layers and exposes fast adsorption sites, enabling 70%–75% more fast sites, 114% higher productivity, and 51.8% lower energy consumption than ...
Qingyang Shao   +6 more
wiley   +1 more source

Metal-Free DNA Linearized Nuclease Based on PASP-Polyamine Conjugates [PDF]

open access: yes, 2012
Genome manipulation controlled by small metal complexes has attracted extensive interest because of their potential application in the fields of molecular biotechnology and drug development.
Liu, Yan   +7 more
core  

Difluoromethylornithine (DFMO) and AMXT 1501 inhibit capsule biosynthesis in pneumococci

open access: yesScientific Reports, 2022
Polyamines are small cationic molecules that have been linked to various cellular processes including replication, translation, stress response and recently, capsule regulation in Streptococcus pneumoniae (Spn, pneumococcus).
Moses B. Ayoola   +7 more
doaj   +1 more source

Helical polyamines

open access: yesChemical Science
The first report on isotactic poly(propylene imine) and its stereoblock copolymers prepared by living anionic polymerization.
Daniël Hagedoorn   +6 more
openaire   +3 more sources

Differences in Polyamine Levels between 'Kyoho,' 'Campbell Early' and 'Muscat Bailey A' Grapes with Differing Features of Berry Drop [PDF]

open access: yes, 2002
A comparative study was conducted of berry dropping and changes in polyamine levels in 'Kyoho,' 'Campbell Early' and 'Muscat Bailey A' grapes. Berry dropping occurred first in 'Muscat Bailey A' grapes, peaking 6 days after full bloom.
OGATA, Tsuneo   +2 more
core  

Polyamine ????????? ???????????? ????????? ??????????????? ?????? [PDF]

open access: yes, 1998
Polyamine was synthesized for the drinking water treatment. Polyamine was produced by the two step polycondensation of dimethytamine(DMA) and epichlorohydrin(EPI) and its properties were characterized.
Shin, Myung-Chul   +4 more
core  

Gut Health in Ostriches (Struthio camelus): Insights Into Intestinal Structure, Functions, Microbiome, and Improvement Strategies

open access: yesAnimal Research and One Health, EarlyView.
Our paper systematically reviews the intestinal structure, function, and microbiota of ostriches, along with strategies for improving their gut health. We analyze how these factors collectively influence intestinal homeostasis and ostrich welfare, emphasizing probiotics as a promising intervention to enhance gut health, boost population well‐being, and
Zi‐Qun Zhang   +6 more
wiley   +1 more source

Polyamine Drug Discovery: Synthetic Approaches to Therapeutic Modulators of Polyamine Metabolism [PDF]

open access: yes, 2011
Numerous synthetic compounds have been described that either act as inhibitors of enzymes involved in polyamine metabolism or otherwise modulate these pathways.
Patrick M. Woster
core   +1 more source

Dietary and Gut Microbiota Polyamines in Obesity- and Age-Related Diseases

open access: yesFrontiers in Nutrition, 2019
The polyamines putrescine, spermidine, and spermine are widely distributed polycationic compounds essential for cellular functions. Intracellular polyamine pools are tightly regulated by a complex regulatory mechanism involving de novo biosynthesis ...
Bruno Ramos-Molina   +9 more
doaj   +1 more source

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