keyword
MENU ▼
Read by QxMD icon Read
search

spermine

keyword
https://www.readbyqxmd.com/read/28531327/interstrand-cross-links-arising-from-strand-breaks-at-true-abasic-sites-in-duplex-dna
#1
Zhiyu Yang, Nathan E Price, Kevin M Johnson, Yinsheng Wang, Kent S Gates
Interstrand cross-links are exceptionally bioactive DNA lesions. Endogenous generation of interstrand cross-links in genomic DNA may contribute to aging, neurodegeneration, and cancer. Abasic (Ap) sites are common lesions in genomic DNA that readily undergo spontaneous and amine-catalyzed strand cleavage reactions that generate a 2,3-didehydro-2,3-dideoxyribose sugar remnant (3'ddR5p) at the 3'-terminus of the strand break. Interestingly, this strand scission process leaves an electrophilic α,β-unsaturated aldehyde residue embedded within the resulting nicked duplex...
May 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28530604/biogenic-amine-concentrations-and-evolution-in-chilled-canadian-pork-for-the-japanese-market
#2
Tania M Ngapo, Lise Vachon
The aim of this study was to evaluate concentrations and evolution of biogenic amines in Canadian pork destined for the Japanese market. At 48h post-mortem, export quality loins were aged at -1.7°C for 13, 28, 43 or 58d (chilled) or 4.0°C for 5d (fresh). Increasing concentrations of putrescine, spermine and spermidine were observed with chilled ageing period and were greater in chilled export (43d at -1.7°C) than domestic market (5d at 4.0°C) pork equivalents. Cadaverine was detected, but was not influenced by ageing conditions, and tyramine was only detected in some samples after 43days at -1...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28526281/effects-of-maternal-immune-activation-on-brain-arginine-metabolism-of-postnatal-day-2-rat-offspring
#3
Jiaxian Zhang, Yu Jing, Hu Zhang, David K Bilkey, Ping Liu
l-Arginine is a versatile semi-essential amino acid with a number of bioactive metabolites, and altered arginine metabolism has been implicated in the pathogenesis of schizophrenia. Earlier research has demonstrated that maternal immune activation (MIA; a risk factor for schizophrenia) alters arginine metabolism in the prefrontal cortex and hippocampus of the adult offspring. The present study investigated how MIA affected the levels of l-arginine and its downstream metabolites in the whole forebrain, frontal cortex, hippocampus and cerebellum of male and female rat offspring at the age of postnatal day 2...
May 16, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28525806/a-novel-porphyrin-based-molecular-probe-zntcppspm4-with-catalytic-stabilizing-and-chiroptical-diagnostic-power-towards-dna-b-z-transition
#4
Chiara M A Gangemi, Alessandro D'Urso, Gaetano A Tomaselli, Nina Berova, Roberto Purrello
In this work we have designed a new zinc(II) porphyrin with four spermines conjugate in the meso positions, meso-tetrakis-(4-carboxysperminephenyl)porphyrin, ZnTCPPSpm4) with the aim of acting as a chiroptical probe for the Z-form of DNA, a high energy transient conformation of DNA. In addition to monitor by Electronic Circular Dichroism chiroptical response the formation of Z-DNA in the presence of micromolar concentration of spermine, this porphyrin based molecular probe is also able to catalyze and stabilize this important DNA structure...
May 14, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28516954/histone-deacetylase-10-structure-and-molecular-function-as-a-polyamine-deacetylase
#5
Yang Hai, Stephen A Shinsky, Nicholas J Porter, David W Christianson
Cationic polyamines such as spermidine and spermine are critical in all forms of life, as they regulate the function of biological macromolecules. Intracellular polyamine metabolism is regulated by reversible acetylation and dysregulated polyamine metabolism is associated with neoplastic diseases such as colon cancer, prostate cancer and neuroblastoma. Here we report that histone deacetylase 10 (HDAC10) is a robust polyamine deacetylase, using recombinant enzymes from Homo sapiens (human) and Danio rerio (zebrafish)...
May 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28514972/the-effect-of-tetraneura-ulmi-l-galling-process-on-the-activity-of-amino-acid-decarboxylases-and-the-content-of-biogenic-amines-in-siberian-elm-tissues
#6
K Kmieć, C Sempruch, G Chrzanowski, P Czerniewicz
Tetraneura ulmi (L.), a member of Eriosomatinae subfamily, is one of the gall-forming aphids occurring on elms. Sap-sucking behaviour of founding mothers results in the formation of new plant organs. This study documents the changes in the content of plant biogenic amines (putrescine, cadaverine, spermidine, tryptamine, spermine and histamine) and key enzymes of their biosynthesis: lysine decarboxylase (LDC), tyrosine decarboxylase and ornithine decarboxylase (ODC) in galls and other parts of Siberian elm (Ulmus pumila L...
May 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28503850/roles-of-spermine-in-modulating-the-antioxidant-status-and-nrf2-signalling-molecules-expression-in-the-thymus-and-spleen-of-suckling-piglets-new-insight
#7
W Cao, X Xu, G Jia, H Zhao, X Chen, C Wu, J Tang, J Wang, J Cai, G Liu
This study aimed to investigate the effects of spermine and extended spermine administration on the antioxidant status and expression of NF-E2-related factor 2 (Nrf2) signalling molecules in the thymus and spleen in suckling piglets. One half of eighty 12-day-old suckling piglets obtained sufficient nutrient intake supplemented with spermine (0.4 mmol/kg body weight), and another half received restricted nutrient intake supplemented with physiological saline in equal doses once a day for 7 hr or 3, 6 or 9 days in pairs...
May 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28489049/superparamagnetic-iron-oxide-nanoparticles-complexed-cationic-amylose-for-in-vivo-magnetic-resonance-imaging-tracking-of-transplanted-stem-cells-in-stroke
#8
Bing-Ling Lin, Jun-Zhao Zhang, Lie-Jing Lu, Jia-Ji Mao, Ming-Hui Cao, Xu-Hong Mao, Fang Zhang, Xiao-Hui Duan, Chu-Shan Zheng, Li-Ming Zhang, Jun Shen
Cell-based therapy with mesenchymal stem cells (MSCs) is a promising strategy for acute ischemic stroke. In vivo tracking of therapeutic stem cells with magnetic resonance imaging (MRI) is imperative for better understanding cellular survival and migrational dynamics over time. In this study, we develop a novel biocompatible nanocomplex (ASP-SPIONs) based on cationic amylose, by introducing spermine and the image label, ultrasmall superparamagnetic iron oxide nanoparticles (SPIONs), to label MSCs. The capacity, efficiency, and cytotoxicity of the nanocomplex in transferring SPIONs into green fluorescence protein-modified MSCs were tested; and the performance of in vivo MRI tracking of the transplanted cells in acute ischemic stroke was determined...
May 10, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28489025/plasticizing-effects-of-polyamines-in-protein-based-films
#9
Mohammed Sabbah, Prospero Di Pierro, C Valeria L Giosafatto, Marilena Esposito, Loredana Mariniello, Carlos Regalado-Gonzales, Raffaele Porta
Zeta potential and nanoparticle size were determined on film forming solutions of native and heat-denatured proteins of bitter vetch as a function of pH and of different concentrations of the polyamines spermidine and spermine, both in the absence and presence of the plasticizer glycerol. Our results showed that both polyamines decreased the negative zeta potential of all samples under pH 8.0 as a consequence of their ionic interaction with proteins. At the same time, they enhanced the dimension of nanoparticles under pH 8...
May 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28487688/gamma-glutamylpolyamine-synthetase-glna3-is-involved-in-the-first-step-of-polyamine-degradation-pathway-in-streptomyces-coelicolor-m145
#10
Sergii Krysenko, Nicole Okoniewski, Andreas Kulik, Arne Matthews, Jan Grimpo, Wolfgang Wohlleben, Agnieszka Bera
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. However, hardly anything is known about polyamine utilization and its regulation in streptomycetes. In this study, we demonstrated that only one of the three proteins annotated as glutamine synthetase-like protein, GlnA3 (SCO6962), was involved in the catabolism of polyamines. Transcriptional analysis revealed that the expression of glnA3 was strongly induced by exogenous polyamines and repressed in the presence of ammonium...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28460972/bioactive-amines-in-passiflora-are-affected-by-species-and-fruit-development
#11
Larissa L Bomtempo, Ana Maria Costa, Herbert Lima, Nicki Engeseth, Maria Beatriz A Gloria
Bioactive amines were determined in selected passion fruit species and throughout fruit development. The same amines (spermine, spermidine, agmatine, putrescine and tryptamine) were found in four Passiflora species (2008-2010 growing seasons) at different concentrations: P. alata had higher polyamines (spermine+spermidine, 8.41mg/100g); P. setacea and P. nitida had higher putrescine (>7.0mg/100g); and P. setacea had higher agmatine contents (1.37mg/100g) compared to the others. The indolamine tryptamine was present at low concentrations in all species (~0...
November 2016: Food Research International
https://www.readbyqxmd.com/read/28456048/polyamine-rna-membrane-interactions-from-the-past-to-the-future-in-biology
#12
Carlos Acosta-Andrade, Ibai Artetxe, Marta G Lete, Bingen G Monasterio, Kepa Ruiz-Mirazo, Félix M Goñi, Francisca Sánchez-Jiménez
Biogenic polyamines (PAs), spermine, spermidine and putrescine are widely spread amino acid derivatives, present in living cells throughout the whole evolutionary scale. Their amino groups confer them a marked basic character at the cellular pH. We have tested the interaction of PAs with negatively-charged phospholipids in the absence and presence of nucleic acids (tRNA was mainly used for practical reasons). PAs induced aggregation of lipid vesicles containing acidic phospholipids. Aggregation was detected using both spectroscopic and fluorescence microscopy methods (the latter with giant unilamellar vesicles)...
April 5, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28429995/new-insights-into-the-role-of-dietary-spermine-on-inflammation-immune-function-and-related-signalling-molecules-in-the-thymus-and-spleen-of-piglets
#13
Wei Cao, Xianjian Wu, Gang Jia, Hua Zhao, Xiaoling Chen, Caimei Wu, Jiayong Tang, Jing Wang, Jingyi Cai, Guangmang Liu
This study aimed to determine the effects of dietary spermine supplementation on the inflammatory response and immune function of the thymus and spleen in piglets. Eighty suckling piglets were randomly assigned to receive adequate nutrients supplemented with spermine (0.4 mmol/kg body weight) or restricted nutrient intake supplemented with normal saline for 7 h or 3, 6 and 9 days in pairs. Regardless of treatment time, spermine supplementation decreased (p < 0.05, compared with the controls) the following: (1) tumour necrosis factor α (TNF-α), interleukin (IL)-1β, 2 and 6, and interferon (IFN)-γ levels in serum; (2) gene expression of cluster of differentiation 8 and integrin beta-2 in the thymus and spleen and the lymphocyte function-associated antigen 1 in the thymus; (3) mRNA levels of TNF-α, IL 1β, 2, 6, and 12, IFN-γ and inducible nitric oxide synthase in the thymus and spleen, as well as IL-8 in the spleen; and (4) eukaryotic IF4E-binding protein 1, Janus kinase 2, signal transducer and activator of transcription 3, and nuclear factor-kappa B P65 gene transcriptions in the thymus and spleen...
June 2017: Archives of Animal Nutrition
https://www.readbyqxmd.com/read/28429226/screening-of-some-dioxaboreninopyridine-and-aniline-derivatives-for-carcinogenic-properties-using-a-model-cell-free-system-of-regenerating-rat-liver
#14
S P Syatkin, A A Kirichuk, A T Soldatenkov, S V Kutyakov, E V Neborak, N A Shevkun, O M Kuznetsova, A S Skorik, A A Terent'ev
We studied the effects of some aniline and dioxaborininopyridine derivatives on the rate of oxidative deamination of putrescine and polyamines in a tissue with high mitotic index. These effects were evaluated quantitatively by measuring diamine oxidase and polyamine oxidase activities in a model cell-free test system of regenerating rat liver tissue. Aniline derivatives exhibited mainly antiproliferative effects and promoted oxidative degradation of putrescine, spermidine, and spermine. Dioxaborininopyridine derivatives inhibited this process, thus exhibiting carcinogenic properties...
April 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28428760/the-variation-tendency-of-polyamines-forms-and-components-of-polyamine-metabolism-in-zoysiagrass-zoysia-japonica-steud-to-salt-stress-with-exogenous-spermidine-application
#15
Shucheng Li, Linlin Cui, Yujuan Zhang, Yunwen Wang, Peisheng Mao
To understand dynamic changes in polyamines (PAs) forms and components of polyamine metabolism in zoysiagrass (Zoysia japonica Steud.) response to salt stress with exogenous spermidine (Spd) application, two Chinese zoysia cultivars, z081 and z057, were exposed to sodium chloride stress for 2, 4, 6, and 8 days. The z057 cultivar possesses higher salinity tolerance than the z081 cultivar. Salt stress decreased the zoysiagrass fresh weight (FW) and increased free Spd and spermine (Spm) levels and soluble and insoluble putrescine (Put), Spd and Spm levels in both cultivars...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28423064/biochemical-evaluation-of-the-anticancer-potential-of-the-polyamine-based-nanocarrier-nano11047
#16
Tracy Murray-Stewart, Elena Ferrari, Ying Xie, Fei Yu, Laurence J Marton, David Oupicky, Robert A Casero
Synthesizing polycationic polymers directly from existing drugs overcomes the drug-loading limitations often associated with pharmacologically inert nanocarriers. We recently described nanocarriers formed from a first-generation polyamine analogue, bis(ethyl)norspermine (BENSpm), that could simultaneously target polyamine metabolism while delivering therapeutic nucleic acids. In the current study, we describe the synthesis and evaluation of self-immolative nanocarriers derived from the second-generation polyamine analogue PG-11047...
2017: PloS One
https://www.readbyqxmd.com/read/28388446/phosphorylation-of-dynamin-related-protein-1-at-ser616-regulates-mitochondrial-fission-and-is-involved-in-mitochondrial-calcium-uniporter-mediated-neutrophil-polarization-and-chemotaxis
#17
Xianchong Zheng, Mimi Chen, Xiaojing Meng, Xinwei Chu, Chunqing Cai, Fei Zou
During an inflammatory response, polarization of neutrophils is necessary for effective chemotaxis and bacterial endocytosis. Ca(2+) uptake into mitochondria through the mitochondrial calcium uniporter (MCU) is crucial for cell metabolism, signaling and survival; however, the physiological role of MCU in human neutrophils remains unclear. Here we show that MCU is vital for the polarization and chemotaxis of neutrophils. Activation of MCU by spermine promotes neutrophil polarization and chemotaxis, whereas inhibition of MCU by Ru360 blunts both processes...
April 4, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28376050/role-of-atf4-in-skeletal-muscle-atrophy
#18
Christopher M Adams, Scott M Ebert, Michael C Dyle
PURPOSE OF REVIEW: Here, we discuss recent work focused on the role of activating transcription factor 4 (ATF4) in skeletal muscle atrophy. RECENT FINDINGS: Muscle atrophy involves and requires widespread changes in skeletal muscle gene expression; however, the transcriptional regulatory proteins responsible for those changes are not yet well defined. Recent work indicates that some forms of muscle atrophy require ATF4, a stress-inducible bZIP transcription factor subunit that helps to mediate a broad range of stress responses in mammalian cells...
May 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28370665/induction-of-the-pho-regulon-and-polyphosphate-synthesis-against-spermine-stress-in-pseudomonas-aeruginosa
#19
Yu-Chih Peng, ChienYi Lu, Guoqing Li, Zehava Eichenbaum, Chung-Dar Lu
Growth of Pseudomonas aeruginosa on spermine requires a functional γ-glutamylpolyamine synthetase PauA2. Not only subjected to growth inhibition by spermine, the pauA2 mutant became more sensitive to β-lactam antibiotics in human serum. To explore PauA2 as a potential target of drug development, suppressors of the pauA2 mutant, which alleviated toxicity, were isolated from selection plates containing spermine. These suppressors share common phenotypic changes including delayed growth rate, retarded swarming motility, and pyocyanin overproduction...
March 29, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28361106/fluorescence-spectroscopy-of-rogfp2-based-redox-probes-responding-to-various-physiologically-relevant-oxidant-species-in-vitro
#20
Alexandra Müller, Jannis F Schneider, Adriana Degrossoli, Nataliya Lupilova, Tobias P Dick, Lars I Leichert
This article contains representative fluorescence excitation spectra of roGFP2-based probes used for ratiometric analysis of redox changes as presented in the article "Systematic in vitro assessment of responses of roGFP2-based probes to physiologically relevant oxidant species" [1]. The recombinant probes roGFP2, roGFP2-Orp1, and Grx1-roGFP2 were exposed to various oxidative and nitrosative species, including hydrogen peroxide (H2O2), aldrithiol-2 (AT-2), glutathione disulfide (GSSG), hypochlorous acid (HOCl), S-nitrosoglutathione (GSNO), peroxynitrite (ONOO(-)), potassium polysulfide (K2Sx), spermine NONOate (SperNO), and diethyl amino NONOate (DeaNO) at different molar ratios...
April 2017: Data in Brief
keyword
keyword
76600
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"