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https://www.readbyqxmd.com/read/29777905/coupling-of-the-polyamine-and-iron-metabolism-pathways-in-the-regulation-of-proliferation-mechanistic-links-to-alterations-in-key-polyamine-biosynthetic-and-catabolic-enzymes
#1
Darius J R Lane, Dong-Hun Bae, Aritee R Siafakas, Yohan Suryo Rahmanto, Lina Al-Akra, Patric J Jansson, Robert A Casero, Des R Richardson
Many biological processes result from the coupling of metabolic pathways. Considering this, proliferation depends on adequate iron and polyamines, and although iron-depletion impairs proliferation, the metabolic link between iron and polyamine metabolism has never been thoroughly investigated. This is important to decipher, as many disease states demonstrate co-dysregulation of iron and polyamine metabolism. Herein, for the first time, we demonstrate that cellular iron levels robustly regulate 13 polyamine pathway proteins...
May 16, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29770139/spermine-alleviates-acute-liver-injury-by-inhibiting-liver-resident-macrophage-pro-inflammatory-response-through-atg5-dependent-autophagy
#2
Shun Zhou, Jian Gu, Rui Liu, Song Wei, Qi Wang, Hongbing Shen, Yifan Dai, Haoming Zhou, Feng Zhang, Ling Lu
Liver-resident macrophages (Kupffer cells, KCs) and autophagy play critical roles in the pathogenesis of toxin-induced liver injury. Recent evidence indicates that autophagy can regulate macrophage M1/M2 polarization under different inflammatory conditions. Polyamines, including putrescine, spermidine, and spermine (SPM), are polycations with anti-oxidative, anti-aging, and cell autophagy induction properties. This study aimed to determine the mechanisms by which SPM protects against thioacetamide (TAA)-induced acute liver injury in a mouse model...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29761642/immunological-blocking-of-spermidine-mediated-host-pathogen-communication-provides-effective-control-against-pseudomonas-aeruginosa-infection
#3
Jianhe Wang, Jing Wang, Lian-Hui Zhang
Pseudomonas aeruginosa is known to cause life-threatening infections. The previous studies showed that the type III secretion system (T3SS) of this pathogen is a key virulence determinant, which is activated by polyamines signals spermidine (Spd) and spermine (Spm) from mammalian host. To test the potential of blocking host-pathogen communication in disease control, in this study we developed a high potency mouse monoclonal antibody (Mab 4E4, IgG1 sub-isotype) by using Spm-protein conjugate as an immunogen...
May 14, 2018: Microbial Biotechnology
https://www.readbyqxmd.com/read/29740359/profiling-of-amino-acids-and-their-derivatives-biogenic-amines-before-and-after-antipsychotic-treatment-in-first-episode-psychosis
#4
Liisa Leppik, Kärt Kriisa, Kati Koido, Kadri Koch, Kärolin Kajalaid, Liina Haring, Eero Vasar, Mihkel Zilmer
Schizophrenia (SCH) is a heterogeneous disorder, deriving from a potential multitude of etiopathogenetic factors. During the past few years there has been an increasing interest in the role of circulating amino acids (AAs) and biogenic amines (BAs) in the pathophysiology of SCH. In the present study, we aimed to provide an insight into the potential role of alterations in levels of AAs and BAs as well as examine their more specific metabolic shifts in relation to early stage of SCH. We measured 21 AAs and 17 BAs in serum samples of patients with first-episode psychosis (FEP) before and after 7-month antipsychotic treatment in comparison to control subjects (CSs)...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29738463/determination-of-biogenic-amines-in-seawater-using-capillary-electrophoresis-with-capacitively-coupled-contactless-conductivity-detection
#5
Elbaleeq A Gubartallah, Ahmad Makahleh, Joselito P Quirino, Bahruddin Saad
A rapid and green analytical method based on capillary electrophoresis with capacitively coupled contactless conductivity detection (C⁴D) for the determination of eight environmental pollutants, the biogenic amines (putrescine, cadaverine, spermidine, spermine, tyramine, 2-phenylamine, histamine and tryptamine), is described. The separation was achieved under normal polarity mode at 24 °C and 25 kV with a hydrodynamic injection (50 mbar for 5 s) and using a bare fused-silica capillary (95 cm length × 50 µm i...
May 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29729200/reduction-in-polyamine-catabolism-leads-to-spermine-mediated-airway-epithelial-injury-and-induces-asthma-features
#6
Vaibhav Jain, Shikha Raina, Atish Prabhakar Gheware, Rita Singh, Rakhshinda Rehman, Vinny Negi, Tracy Murray Stewart, Ulaganathan Mabalirajan, Adarsh Kumar Mishra, Robert A Casero, Anurag Agrawal, Balaram Ghosh
BACKGROUND: Airway epithelial injury is a crucial component of acute and severe asthma pathogenesis and a promising target for treatment of refractory asthma. However, the underlying mechanism of epithelial injury remains poorly explored. Though high levels of polyamines, mainly spermine, have been found in asthma and co-morbidity, their role in airway epithelial injury and the cause of their altered levels in asthma has not been explored. METHODS: We measured key polyamine metabolic enzymes in lung samples from normal and asthmatic subjects and in mice with OVA-induced allergic airway inflammation (AAI)...
May 5, 2018: Allergy
https://www.readbyqxmd.com/read/29726474/novel-platinum-based-anticancer-drug-a-complete-vibrational-study
#7
A L M Batista de Carvalho, S F Parker, L A E Batista de Carvalho, M P M Marques
The introduction of cisplatin to oncology, in the 1970s, marked the onset of the search for novel and improved metal-based anticancer drugs. Polynuclear PtII and PdII complexes with linear alkylamines as bridging ligands are a class of potential antineoplastic agents that have shown promising cytotoxicity against low-prognosis human cancers, such as metastatic breast adenocarcinoma and osteosarcoma. The present study reports an analysis of [μ-N,N'-bis(3-aminopropyl)butane-1,4-diamine-κ4 N,N':N'',N''']bis[dichloridoplatinum(II)], [Pt2 Cl4 (C10 H26 N4 )], denoted Pt2 Spm (Spm is spermine), by vibrational spectroscopy coupled to theoretical calculations...
May 1, 2018: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/29725233/biogenic-amine-formation-in-bez-sucuk-a-type-of-turkish-traditional-fermented-sausage-produced-with-different-meat-fat-ratios
#8
Ümran Çiçek, Kader Tokatli
This study aims to evaluate biogenic amine levels of bez sucuks (BS) produced with different meat:fat ratios. For this, three BS groups were manufactured with meat:fat ratios of 90:10 (BS10), 80:20 (BS20), and 70:30 (BS30). The pH and water activity values and biogenic amine amounts of sucuk samples were determined during processing and storage periods and the pH values of the initial mixtures of BS samples were in the range 5.51-5.74, decreasing to 4.72-4.94 by the 14th day. The water activity values of BS samples showed significant decreases as a result of the drying stage and reached to range 0...
February 2018: Korean Journal for Food Science of Animal Resources
https://www.readbyqxmd.com/read/29719397/endogenous-ornithine-decarboxylase-polyamine-system-mediated-the-antagonist-role-of-insulin-peg-cmcs-preconditioning-against-heart-ischemia-reperfusion-injury-in-diabetes-mellitus
#9
Fei Tong, Suhuan Liu, Bing Yan, Xuejun Li, Shiwei Ruan, Shuyu Yang
Introduction: Insulin has shown antioxidation and cytoprotective effects to decrease heart ischemia/reperfusion injury (HI/RI) in diabetes mellitus (DM), but the role of insulin/poly(ethylene glycol)-carboxymethyl chitosan (PEG-CMCS) on HI/RI in DM is not known. This research explored whether insulin/PEG-CMCS revealed a protective effect on HI/RI in DM through ornithine decarboxylase (ODC)/polyamine systems. Materials and methods: Diabetes was induced via streptozotocin (STZ) in Sprague Dawley (SD) rats, which suffered from HI via blocking the left circumflex artery for 45 minutes, followed by 2 hours of reperfusion...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29715464/spermidine-spermine-n1-acetyltransferase-mediated-polyamine-catabolism-regulates-beige-adipocyte-biogenesis
#10
Fang Yuan, Lin Zhang, Yang Cao, Wei Gao, Can Zhao, Yuan Fang, Kamyar Zahedi, Manoocher Soleimani, Xiang Lu, Zhuyuan Fang, Qin Yang
OBJECTIVE: Cold and β3-adrenergic receptor (AR) agonists activate beige adipocyte biogenesis in white adipose tissue (WAT). The two stimuli also induce expression of inflammatory cytokines in WAT. The low-grade inflammation may further promote WAT browning. However, the mechanisms to reconcile these two biological processes remain to be elucidated. In this study, we aim to investigate the roles of the rate-limiting polyamine catabolic enzyme spermidine/spermine N1-acetyltransferase (SAT1) in regulating beige adipocyte biogenesis and inflammation...
April 28, 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29688702/supramolecular-assembly-of-dna-phenanthrene-conjugates-into-vesicles-with-light-harvesting-properties
#11
Caroline D Bösch, Jovana Jevric, Nutcha Bürki, Markus Probst, Simon M Langenegger, Robert Häner
Vesicle-shaped supramolecular polymers are formed by self-assembly of a DNA duplex containing phenanthrene overhangs at both ends. In presence of spermine, the phenanthrene overhangs act as sticky ends linking the DNA duplexes together. In aqueous solution, the assembly leads to vesicles in the range of 50 - 200 nm, as shown by electron microscopy and dynamic light scattering. Fluorescence measurements show that the assembled phenanthrene units act as light-harvesting antennae and transfer absorbed energy to an acceptor, such as pyrene or Cy3, which can either be directly added to the polymer or attached via a complementary DNA strand...
April 24, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29653182/detection-of-biogenic-amines-and-microbial-safety-assessment-of-novel-meju-fermented-with-addition-of-nelumbo-nucifera-ginkgo-biloba-and-allium-sativum
#12
Shruti Shukla, Jong Suk Lee, Vivek K Bajpai, Shivraj Hariram Nile, Yun Suk Huh, Young-Kyu Han, Myunghee Kim
Meju, a cooked and fermented soy bean based food product, is used as a major ingredient in Korean traditional fermented foods such as Doenjang. We developed a novel type of Meju using single and combined extracts of Allium sativum (garlic clove), Nelumbo nucifera (lotus leaves), and Ginkgo biloba (ginkgo leaves) at 1% and 10% concentrations to improve the safety of Meju-based fermented products. Biogenic amines (BAs) in protein-rich fermented food products pose considerable toxical risks. The objective of this study was to investigate the effects of adding selected plant extracts in Meju samples during fermentation...
April 10, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29649565/polyamines-protect-nucleic-acids-against-depurination
#13
Yusuke Terui, Taketo Yoshida, Akihiko Sakamoto, Daisuke Saito, Tairo Oshima, Masahito Kawazoe, Shigeyuki Yokoyama, Kazuei Igarashi, Keiko Kashiwagi
Depurination is accelerated by heat and reactive oxygen species under physiological conditions. We previously reported that polyamines are involved in mitigation of heat shock and oxidative stresses through stimulation of the synthesis of heat shock and antioxidant proteins. This time, we investigated whether polyamines are directly involved in protecting nucleic acids from thermal depurination induced by high temperature. The suppressing efficiencies of depurination of DNA by spermine, caldopentamine and caldohexamine in the presence of 1 mM Mg2+ , were approximately 50%, 60% and 80%, respectively...
April 9, 2018: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/29649432/nitric-oxide-signaling-regulates-tumor-induced-intussusceptive-like-angiogenesis
#14
Selvaraj Vimalraj, Srinivasan Bhuvaneswari, Sundaresan Lakshmikirupa, Ganesh Jyothsna, Suvro Chatterjee
Existing animal models for screening tumor angiogenic process have various setbacks that necessitate further investigations. In this study, we developed an ex-ovo egg yolk angiogenesis model to screen the angiogenic potency of tumor cells (HeLa and SiHa cell lines). The egg yolk angiogenesis assay was applied to study the nitric oxide (NO) influence on switching from sprouting angiogenesis (SA) to intussusceptive angiogenesis (IA) under tumor microenvironment. Morphological analysis and SA-like or IA-like markers expression were determined during the development of chicken chorioallantoic membrane (CAM) from day 5 to 13...
April 9, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29644784/mindy1-is-a-downstream-target-of-the-polyamines-and-promotes-embryonic-stem-cell-self-renewal
#15
Christina James, Tian Yun Zhao, Anisa Rahim, Parul Saxena, Nazreen Abdul Muthalif, Takeshi Uemura, Norihiro Tsuneyoshi, Sheena Ong, Kazuei Igarashi, Chin Yan Lim, Norris Ray Dunn, Leah A Vardy
Embryonic stem cells have the ability to self-renew or differentiate and these processes are under tight control. We previously reported that the polyamine regulator AMD1 is critical for embryonic stem cell self-renewal. The polyamines putrescine, spermidine, and spermine are essential organic cations that play a role in a wide array of cellular processes. Here, we explore the essential role of the polyamines in the promotion of self-renewal and identify a new stem cell regulator that acts downstream of the polyamines: MINDY1...
April 12, 2018: Stem Cells
https://www.readbyqxmd.com/read/29626790/ph-gradient-liquid-chromatography-tandem-mass-spectrometric-assay-for-determination-of-underivatized-polyamines-in-cancer-cells
#16
Hwang Eui Cho, Min H Kang
Altered levels of polyamines in biological specimens have been suggested as potential biomarkers for cancer. Difluoromethylornithine (DFMO, an irreversible inhibitor of ornithine decarboxylase) is reported to modulate polyamines to potentially attenuate proliferation of neuroblastoma cells. A clinical trial is being conducted to evaluate DFMO in various cancers. To determine the pharmacodynamics effect of DFMO, an analytical assay is needed to accurately measure the changes in polyamines in cancer cells. In this study, a novel pH gradient LC-ESI-MS/MS method was developed and validated for the quantitation of polyamines (putrescine, spermidine and spermine) in cancer cells...
March 29, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29624063/diastereoselective-synthesis-of-a-dyn-3-arene-with-distinct-binding-behaviors-toward-linear-biogenic-polyamines
#17
Marion Donnier-Maréchal, Jean Septavaux, Emeric Jeamet, Alexandre Héloin, Florent Perret, Elise Dumont, Jean-Christophe Rossi, Fabio Ziarelli, Julien Leclaire, Laurent Vial
The extension of the family of dyn[ n]arenes toward a three-membered macrocycle is reported. Through a templated approach, a single diastereoisomer of a dyn[3]arene that bears six carboxyl groups could be isolated by precipitation in 59-63% yield and excellent purity (≥95%). A combination of experimental and computational experiments in water at physiological pH revealed that the macrocycle could bind parent biogenic polyamines with a unique diversity of surface-binding modes. Whereas no binding event could be accurately measured with 1,3-diaminopropane, spermidine formed a classical stoichiometric complex with the dyn[3]arene in the millimolar concentration range...
April 6, 2018: Organic Letters
https://www.readbyqxmd.com/read/29605609/genome-wide-identification-phylogenetic-analysis-and-expression-profiling-of-polyamine-synthesis-gene-family-members-in-tomato
#18
Taibo Liu, Binbin Huang, Lin Chen, Zhiqiang Xian, Shiwei Song, Riyuan Chen, Yanwei Hao
Polyamines (PAs), including putrescine (Put), spermidine (Spd), spermine (Spm), and thermospermine (T-Spm), play key roles in plant development, including fruit setting and ripening, morphogenesis, and abiotic/biotic stress. Their functions appear to be intimately related to their synthesis, which occurs via arginine/ornithine decarboxylase (ADC/ODC), Spd synthase (SPDS), Spm synthase (SPMS), and Acaulis5 (ACL5), respectively. Unfortunately, the expression and function of these PA synthesis-relate genes during specific developmental process or under stress have not been fully elucidated...
March 29, 2018: Gene
https://www.readbyqxmd.com/read/29601943/lung-injury-depresses-glutamatergic-synaptic-transmission-in-the-nucleus-tractus-solitarii-via-discrete-age-dependent-mechanisms-in-neonatal-rats
#19
David G Litvin, Thomas E Dick, Corey B Smith, Frank J Jacono
Transition periods (TPs) are brief stages in CNS development where neural circuits can exhibit heightened vulnerability to pathologic conditions such as injury or infection. This susceptibility is due in part to specialized mechanisms of synaptic plasticity, which may become activated by inflammatory mediators released under pathologic conditions. Thus, we hypothesized that the immune response to lung injury (LI) mediated synaptic changes through plasticity-like mechanisms that depended on whether LI occurred just before or after a TP...
March 27, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29593653/identification-of-metabolomic-biomarkers-for-endometrial-cancer-and-its-recurrence-after-surgery-in-postmenopausal-women
#20
Yannick Audet-Delage, Lyne Villeneuve, Jean Grégoire, Marie Plante, Chantal Guillemette
Endometrial cancer (EC) is the most frequent gynecological cancer in developed countries. Most EC occurs after menopause and is diagnosed as endometrioid (type I) carcinomas, which exhibit a favorable prognosis. In contrast, non-endometrioid (type II) carcinomas such as serous tumors have a poor prognosis. Our goal was to identify novel blood-based markers associated with EC subtypes and recurrence after surgery in postmenopausal women. Using mass spectrometry-based untargeted metabolomics, we examined preoperative serum metabolites among control women ( n  = 18) and those with non-recurrent (NR) and recurrent (R) cases of type I endometrioid ( n  = 24) and type II serous ( n  = 12) carcinomas...
2018: Frontiers in Endocrinology
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