Results 51 to 60 of about 31,816 (250)

Polyamine Uptake, Kinetics, and Competition among Polyamines and between Polyamines and Inorganic Cations [PDF]

Plant Physiology, 1986
Polyamine uptake, the kinetics of this uptake, and the competition among polyamines and between polyamines and inorganic cations were studied in petals of Saintpaulia ionantha Wendl. Uptake experiments using (14)C-labeled polyamines were carried out on single petals, at room temperaure (20 degrees C) and in the light.
R, Pistocchi, N, Bagni, J A, Creus
openaire   +2 more sources

High‐Density Type I Collagen Promotes IFN‐γ+ CD8+ T Cell Exhaustion via SAT1‐ASS1‐Mediated Glutamine Accumulation and Ferroptosis in Triple‐Negative Breast Cancer

Advanced Science, EarlyView.
High‐density type I collagen promotes glutamine (Gln) accumulation–related ferroptosis of TNBC cells via the spermidine/spermine N1‐acetyltransferase 1 (SAT1)‐ argininosuccinate synthase (ASS1) signaling pathway, thus depriving immune cells of Gln supply and inducing IFN‐γ+ CD8+ T cell exhaustion in the TME.
Jinyan Wang, Shuangyue Pan, Lu Bai, Bin Li, Tiantian Liu, Jianing Cao, Mengdi Yang, Heda Zhang, Duancheng Guo, Wenxiang Zhi, Zhonghua Tao, Xichun Hu   +11 more
wiley   +1 more source

Coxsackievirus B3 Responds to Polyamine Depletion via Enhancement of 2A and 3C Protease Activity

Viruses, 2019
Polyamines are small positively-charged molecules abundant in eukaryotic cells that are crucial to RNA virus replication. In eukaryotic cells, polyamines facilitate processes such as transcription, translation, and DNA replication, and viruses similarly ...
Courtney N. Dial, Patrick M. Tate, Thomas M. Kicmal, Bryan C. Mounce   +3 more
doaj   +1 more source

Oral Actinomyces Species Exposure is Associated with Anxiety‐Like Behavior, Mitochondrial Remodeling, and Altered GABAergic Pathways

Advanced Science, EarlyView.
Oral exposure to cannabis‐associated Actinomyces species, particularly A. meyeri, is associated with anxiety‐like behavior in mice in the absence of detectable bacterial translocation or overt systemic inflammation. These findings support a potential oral‐brain metabolic axis involving candidate metabolites such as arginine and argininosuccinate ...
Tabinda Salman, Zhenwu Luo, Douglas Johnson, Arshad A. Noorani, Zhuang Wan, Bogdan Bordieanu, Zhi‐wei Ye, Rachel D. Penrod, Hongxu Xian, Sylvia Fitting, Peter W. Kalivas, Wei Jiang   +11 more
wiley   +1 more source

Porphyrin‐Based Porous Materials for Antibacterial Applications

Advanced Science, EarlyView.
Porphyrin‐based porous materials have excellent photophysical properties and tunable structures for high‐efficiency antibacterial therapy. This review comprehensively discusses the structural design strategies and synthetic pathways of the four main types of porphyrin‐based porous materials, summarizes their cross‐domain antimicrobial applications, and
Xiao‐Xue Liang, Xin Li, Ying Xiong, Xin Wang, Ying‐Wei Yang   +4 more
wiley   +1 more source

Advances in the synthesis and applications of macrocyclic polyamines

Royal Society Open Science
Macrocyclic polyamines constitute a significant class of macrocyclic compounds that play a pivotal role in the realm of supramolecular chemistry. They find extensive applications across diverse domains including industrial and agricultural production ...
Yongguang Gao, Lina Guo, Xinhua Liu, Na Chen, Xiaochun Yang, Qing Zhang   +5 more
doaj   +1 more source

Sub‐Second Ratiometric Fluorescence Imaging of Histamine Dynamics in Living Cells via a Supramolecular Probe

Advanced Science, EarlyView.
A tailored tripartite supramolecular ratiometric probe, engineered by modulating the fluorogenic guest's cationic locus, enables ultrafast histamine monitoring in living cells. Utilizing a competitive displacement mechanism, this system achieves a sub‐second response time with high selectivity.
Chenming Chan, Yujie Han, Yu‐Fei Song, Chunlei Jiang, Qi‐Wei Zhang   +4 more
wiley   +1 more source

Gamma-Glutamylpolyamine Synthetase GlnA3 Is Involved in the First Step of Polyamine Degradation Pathway in Streptomyces coelicolor M145

Frontiers in Microbiology, 2017
Streptomyces coelicolor M145 was shown to be able to grow in the presence of high concentrations of polyamines, such as putrescine, cadaverine, spermidine, or spermine, as a sole nitrogen source.
Agnieszka Bera, Sergii Krysenko, Nicole Okoniewski, Andreas Kulik, Arne Matthews, Jan Grimpo, Wolfgang Wohlleben   +6 more
doaj   +1 more source

Research progress on the microbial metabolism and transport of polyamines and their roles in animal gut homeostasis

Journal of Animal Science and Biotechnology
Polyamines (putrescine, spermidine, and spermine) are aliphatic compounds ubiquitous in prokaryotes and eukaryotes. Positively charged polyamines bind to negatively charged macromolecules, such as nucleic acids and acidic phospholipids, and are involved ...
Chong Zhang, Yongkang Zhen, Yunan Weng, Jiaqi Lin, Xinru Xu, Jianjun Ma, Yuhong Zhong, Mengzhi Wang   +7 more
doaj   +1 more source

Determination of Biologically Active Polyamines in Turkey Breast Meat by HPLC and Derivatization with Dansyl Chloride

Nutrition and Food Sciences Research, 2014
BacBackground and Objectives: polyamines (putrecsine, spermidine and spermine) are widespread components, which can be found in most of the foods like meat, fruits, vegetables, cheese and wine.
Moein Bashiry, Abdorreza Mohammadi, Hedayat Hosseini, Saeed Aeenehvand, Zaniar Mohammadi   +4 more
doaj