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Sodium regulation

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https://www.readbyqxmd.com/read/29160164/rutin-scavenges-reactive-oxygen-species-inactivates-5-adenosine-monophosphate-activated-protein-kinase-ampk-and-increases-nis-expression-in-thyroid-pccl3-cells
#1
Carlos Frederico Lima Gonçalves, Mariana Lopes de Freitas, Rodrigo Soares Fortunato, Leandro Miranda-Alves, Denise Pires de Carvalho, Andrea Claudia Freitas Ferreira
BACKGROUND: Thyroid iodide uptake, mediated by the sodium-iodide symporter (NIS), is essential for thyroid hormone synthesis and also for treatment of thyroid diseases, such as thyroid cancer, through radioiodine therapy. Therefore, compounds able to increase thyroid iodide uptake could be clinically useful, and it is of great importance to unravel the mechanisms underlying such effect. We have previously shown that the flavonoid rutin increases thyroid radioiodide uptake in vivo, in rats...
November 21, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29158847/photoactive-poly-3-hexylthiophene-nanoweb-for-optoelectrical-stimulation-to-enhance-neurogenesis-of-human-stem-cells
#2
Kisuk Yang, Jin Young Oh, Jong Seung Lee, Yoonhee Jin, Gyeong-Eon Chang, Soo Sang Chae, Eunji Cheong, Hong Koo Baik, Seung-Woo Cho
Optoelectrical manipulation has recently gained attention for cellular engineering; however, few material platforms can be used to efficiently regulate stem cell behaviors via optoelectrical stimulation. In this study, we developed nanoweb substrates composed of photoactive polymer poly(3-hexylthiophene) (P3HT) to enhance the neurogenesis of human fetal neural stem cells (hfNSCs) through photo-induced electrical stimulation. METHODS: The photoactive nanoweb substrates were fabricated by self-assembled one-dimensional (1D) P3HT nanostructures (nanofibrils and nanorods)...
2017: Theranostics
https://www.readbyqxmd.com/read/29158841/autophagy-maintains-the-function-of-bone-marrow-mesenchymal-stem-cells-to-prevent-estrogen-deficiency-induced-osteoporosis
#3
Meng Qi, Liqiang Zhang, Yang Ma, Yi Shuai, Liya Li, Kefu Luo, Wenjia Liu, Yan Jin
Rationale: The impaired function of endogenous bone marrow mesenchymal stem cells (BMMSCs) is a determinant in the development of osteoporosis (OP). Recent researches have proved that autophagy plays an important role in maintenance of skeletal phenotype. However, whether autophagy affects the development of OP through regulating the function of BMMSCs remains elusive. Methods: Ovariectomy (OVX)-induced OP model and sham model were established in 8-week-old C57 mice. The differentiation and immunoregulation properties of BMMSCs from two models were examined by osteogenic/adipogenic induction in vitro and treatment of a dextran sulfate sodium (DSS)-induced mice colitis model in vivo...
2017: Theranostics
https://www.readbyqxmd.com/read/29158789/arecoline-increases-glycolysis-and-modulates-ph-regulator-expression-in-ha22t-vgh-hepatoma-cells-leading-to-increase-of-intracellular-ca-2-reactive-oxygen-species-and-anoikis
#4
Hsiao-Ling Cheng, Wen-Tsan Chang, Yu-Chen Hu, Bau-Shan Hsieh, Tzu-Ching Huang, Inn-Wen Chong, Li-Wen Huang, Kee-Lung Chang
Background: Cancer cells proliferate rapidly and are resistant to cell death, relying on aggravated glycolysis to satisfy their increased demand for energy and biosynthetic precursors. However, this process may create unfavorable microenvironments, such as increased acidity, leading to cytotoxicity. Our previous study demonstrated that arecoline induces anoikis of HA22T/VGH hepatoma cells. The present study aimed to examine if arecoline induced anoikis is related to the glycolytic pathway and explore the underlying mechanisms...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29158629/overexpression-of-lhsornpr1-a-npr1-like-gene-from-the-oriental-hybrid-lily-sorbonne-conferred-enhanced-resistance-to-pseudomonas-syringae-pv-tomato-dc3000-in-arabidopsis
#5
Le Wang, Zhihong Guo, Yubao Zhang, Yajun Wang, Guo Yang, Liu Yang, Li Wang, Ruoyu Wang, Zhongkui Xie
The non-expressor of the pathogenesis-related genes 1 (NPR1) is a master regulator in defense signaling of plants and plays a key role in basal and systemic acquired resistance. In this study, we isolated a NPR1-like gene from the oriental hybrid lily 'Sorbonne' (designated as LhSorNPR1) using rapid amplification of cDNA ends (RACE). The open reading frame of LhSorNPR1 consisted of 1854 bp, encoding a protein of 617 amino acids. Multiple sequence alignment revealed that LhSorNPR1 shares high similarity to NPR1-like proteins and characteristics of the BTB/POZ domain and ankyrin repeats...
October 2017: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
https://www.readbyqxmd.com/read/29158595/genome-wide-identification-of-long-non-coding-rna-genes-and-their-association-with-insecticide-resistance-and-metamorphosis-in-diamondback-moth-plutella-xylostella
#6
Feiling Liu, Dianhao Guo, Zhuting Yuan, Chen Chen, Huamei Xiao
Long non-coding RNA (lncRNA) is a class of noncoding RNA >200 bp in length that has essential roles in regulating a variety of biological processes. Here, we constructed a computational pipeline to identify lncRNA genes in the diamondback moth (Plutella xylostella), a major insect pest of cruciferous vegetables. In total, 3,324 lncRNAs corresponding to 2,475 loci were identified from 13 RNA-Seq datasets, including samples from parasitized, insecticide-resistant strains and different developmental stages...
November 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29158357/evidence-for-a-role-of-vascular-endothelium-in-the-control-of-arterial-wall-viscosity-in-humans
#7
Frederic Roca, Michele Iacob, Isabelle Remy-Jouet, Jeremy Bellien, Robinson Joannides
Arterial wall viscosity (AWV) is a major cause of energy dissipation along the arterial tree. Its determinants remain controversial but an active endothelial regulation has been suggested. Our objective was to assess in humans the physiological role of endothelium-derived nitric oxide (NO), epoxyeicosatrienoic acids and the effect of modulating smooth muscle tone in the regulation of AWV. We simultaneously measured radial artery diameter, wall thickness, and arterial pressure in healthy volunteers during the local infusion of inhibitors of NO-synthase (N(G)-monomethyl-l-arginine), epoxyeicosatrienoic acids synthesis by cytochrome P450 (fluconazole), the epoxyeicosatrienoic acids cellular targets calcium-activated potassium channels (tetraethylammonium), alone and in combination...
November 20, 2017: Hypertension
https://www.readbyqxmd.com/read/29155746/saturated-fatty-acids-induce-ceramide-associated-macrophage-cell-death
#8
Yuwen Zhang, Jiaqing Hao, Yanwen Sun, Bing Li
Macrophages highly express epidermal fatty acid-binding protein and adipose fatty acid-binding protein. They actively uptake saturated and unsaturated fatty acids, which might play a critical role in regulating their immune functions. Numerous studies have shown that various fatty acids, saturated or unsaturated, may possess different impacts on cell growth and function. However, the approaches used for fatty acid preparation vary, which may lead to non-physiological results. Serum albumin, a natural carrier for fatty acids in mammalian peripheral blood, is recommended for forming a conjugate complex with the sodium salt of fatty acids to study fatty acid function in mammalian cells, thus minimizing the toxicity of fatty acid soap...
October 31, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29154907/an-integrated-mathematical-epithelial-cell-model-for-airway-surface-liquid-regulation-by-mechanical-forces
#9
Dan Wu, Richard C Boucher, Brian Button, Timothy Elston, Ching-Long Lin
A robust method based on reverse engineering was utilized to construct the ion-channel conductance functions for airway epithelial sodium channels (ENaC), the cystic fibrosis transmembrane conductance regulator (CFTR), and calcium-activated chloride channels (CaCC). The ion-channel conductance models for both normal (NL) and cystic fibrosis (CF) airway epithelia were developed and then coupled to an adenosine triphosphate (ATP) metabolism model and a fluid transport model (collectively called the integrated cell model) to investigate airway surface liquid (ASL) volume regulation and hence mucus concentration, by mechanical forces in NL and CF human airways...
November 15, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/29154432/proposal-for-heart-failure-progression-based-on-the-chloride-theory-worsening-heart-failure-with-increased-vs-non-increased-serum-chloride-concentration
#10
Hajime Kataoka
AIMS: Chloride (Cl) is an established key electrolyte for the activation of the renin-angiotensin-aldosterone system. Recent studies have shown the serum Cl as a key electrolyte for the regulation of body fluid distribution in heart failure (HF) patients. The clinical differences of worsening HF status according to the changes in serum Cl concentration are unclear. METHODS AND RESULTS: Data from 47 chronic HF patients were analysed. Upon worsening HF, each patient exhibited at least two HF-related signs...
November 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/29153132/a-novel-role-for-renal-epithelial-cells-and-the-medullary-sodium-gradient-in-the-local-immune-response
#11
Christina M Wyatt, Steven D Crowley
The extreme hypertonicity of the renal medulla plays a central role in regulating volume status. A recent publication in Cell has identified a novel role for the high sodium environment and the local epithelial cells in the recruitment of mononuclear phagocytes, potentially contributing to the defense against ascending urinary tract infection.
December 2017: Kidney International
https://www.readbyqxmd.com/read/29152764/comparative-transcriptome-analysis-of-the-calcium-signaling-and-expression-analysis-of-sodium-calcium-exchanger-in-aspergillus-cristatus
#12
Xiu-Xiu Ren, Yuchen Wang, YongXiang Liu, Yumei Tan, Chunguang Ren, Yongyi Ge, Zuoyi Liu
Aspergillus cristatus develops into various stages under different Na concentrations: the sexual stage in 0.5 M NaCl and asexual development stage in 3 M NaCl. In order to explore whether the Ca(2+) signaling pathway in A. cristatus responded to the changes in the salt stress, we analyzed the gene expression levels in A. cristatus respectively cultured in 0.5 M NaCl and 3 M NaCl. According to the BLAST analysis results, we identified 25 Ca(2+) -signaling proteins in A. cristatus. The expression levels of most genes involved in the Ca(2+) -signaling pathway in A...
November 20, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/29151069/nitroso-sulfide-coupled-signaling-triggers-specific-vasoactive-effects-in-the-intrarenal-arteries-of-patients-with-arterial-hypertension
#13
S Cacanyiova, A Berenyiova, P Balis, F Kristek, M Grman, K Ondrias, J Breza, J Breza
In normotensive conditions, it has been confirmed that S-nitrosothiols (RSNO), can interact with hydrogen sulfide (H2S) and create new substances with specific vasoactive effects. This interaction could also represent a new regulator signaling pathway in conditions of hypertension. Until now, these effects were studied only in normotensive rats, and they have not been carried out in humans yet. We investigated the vasoactive effects of the products of the H2S/S-nitrosoglutathione (S/GSNO) interaction in lobar arteries (LA) isolated from the nephrectomized kidneys of patients suffering from arterial hypertension and in renal arteries (RA) of spontaneously hypertensive rats (SHR)...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29150589/change-in-hydration-indices-associated-with-an-increase-in-total-water-intake-of-more-than-0-5%C3%A2-l-day-sustained-over-4%C3%A2-weeks-in-healthy-young-men-with-initial-total-water-intake-below-2%C3%A2-l-day
#14
Jodi D Stookey, Janice Hamer, David W Killilea
This secondary data analysis addressed gaps in knowledge about effects of chronic water intake. Longitudinal data from the Adapt Study were used to describe effects of prescribing a sustained increase in water intake relative to baseline, for 4 weeks, on multiple indices of total body water (TBW) flux, regulation, distribution, and volume in five healthy, free-living, young men, with mean total water intake initially below 2 L/day. Indices were measured weekly. Within-person fixed effect models tested for significant changes in indices over time and associations between changes in indices...
November 2017: Physiological Reports
https://www.readbyqxmd.com/read/29150514/sinorhizobium-meliloti-glutathione-reductase-is-required-for-both-redox-homeostasis-and-symbiosis
#15
Guirong Tang, Ningning Li, Yumin Liu, Liangliang Yu, Junhui Yan, Li Luo
Glutathione (L-γ-glutamyl-L-cysteinylglycine; GSH), one of the key antioxidants in Sinorhizobium meliloti, is required for the development of alfalfa (Medicago sativa) nitrogen-fixing nodules. Glutathione exists either in a reduced form (GSH) or an oxidized form (GSSG), and its content is regulated by two pathways in S. meliloti The first pathway is the de novo synthesis of glutathione from its constituent amino acids, namely, Glu, Cys, and Gly, catalyzed by γ-glutamyl cysteine synthetase (GshA) and glutathione synthetase (GshB)...
November 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29149030/using-next-generation-sequencing-to-detect-differential-expression-genes-in-bradysia-odoriphaga-after-exposure-to-insecticides
#16
Haoliang Chen, Lulu Lin, Farman Ali, Minghui Xie, Guangling Zhang, Weihua Su
Bradysia odoriphaga (Diptera: Sciaridae) is the most important pest of Chinese chive. Insecticides are used widely and frequently to control B. odoriphaga in China. However, the performance of the insecticides chlorpyrifos and clothianidin in controlling the Chinese chive maggot is quite different. Using next generation sequencing technology, different expression unigenes (DEUs) in B. odoriphaga were detected after treatment with chlorpyrifos and clothianidin for 6 and 48 h in comparison with control. The number of DEUs ranged between 703 and 1161 after insecticide treatment...
November 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29146157/angiotensin-converting-enzyme-2-activation-ameliorates-pulmonary-endothelial-dysfunction-in-rats-with-pulmonary-arterial-hypertension-through-mediating-phosphorylation-of-endothelial-nitric-oxide-synthase
#17
Gang Li, Han Zhang, Lei Zhao, Yaozhong Zhang, Daole Yan, Yinglong Liu
This study aims to investigate the effect of angiotensin-converting enzyme 2 (ACE2) activation on pulmonary endothelial function in the process of preventing pulmonary arterial hypertension (PAH) in rat models and to explore the underlying mechanisms. Specific pathogen free rats were randomly divided into five groups including control group, PAH group, PAH + Resorcinolnaphthalein (Res) group (ACE2 activation), PAH + Res + MLN4760 group (ACE2 inhibition), and PAH + Res + L-NAME group (endothelial nitric oxide synthase [eNOS] inhibition)...
October 28, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/29145236/protection-by-nitrite-against-the-ischemic-effects-induced-by-acute-myocardial-infarction-in-mice
#18
Yafei Wang, Xin Song, Xia Yue, Hong Su, Yuanliang Gu, Linda Bowman, Min Ding, Baobo Zou, Jinshun Zhao, Xialu Lin
OBJECTIVE: This research was aimed to investigate the correct dose of nitrite that would act as a protection against the ischemic effects induced by acute myocardial infarction (AMI). METHODS: Mice were randomly divided into a sham-operation group (sham), an AMI operation group (AMI), and a nitrite pretreatment+AMI operation group (N+AMI). Seven days before the AMI operation, mice in the N+AMI group were pretreated with sodium nitrite in drinking water. RESULTS: One week after the AMI operation, serum lactate dehydrogenase (LDH) and creatine kinase (CK) activities in both AMI and N+AMI group were significantly higher than those in the sham group, but there were no significant differences between AMI and N+AMI mice...
November 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/29144825/salt-hypertension-and-immunity
#19
A Justin Rucker, Nathan P Rudemiller, Steven D Crowley
The link between inappropriate salt retention in the kidney and hypertension is well recognized. However, growing evidence suggests that the immune system can play surprising roles in sodium homeostasis, such that the study of inflammatory cells and their secreted effectors has provided important insights into salt sensitivity. As part of the innate immune system, myeloid cells have diverse roles in blood pressure regulation, ranging from prohypertensive actions in the kidney, vasculature, and brain, to effects in the skin that attenuate blood pressure elevation...
November 16, 2017: Annual Review of Physiology
https://www.readbyqxmd.com/read/29142310/sodium-channel-nav1-3-is-important-for-enterochromaffin-cell-excitability-and-serotonin-release
#20
Peter R Strege, Kaitlyn Knutson, Samuel J Eggers, Joyce H Li, Fan Wang, David Linden, Joseph H Szurszewski, Lorin Milescu, Andrew B Leiter, Gianrico Farrugia, Arthur Beyder
In the gastrointestinal (GI) epithelium, enterochromaffin (EC) cells are enteroendocrine cells responsible for producing >90% of the body's serotonin (5-hydroxytryptamine, 5-HT). However, the molecular mechanisms of EC cell function are poorly understood. Here, we found that EC cells in mouse primary cultures fired spontaneous bursts of action potentials. We examined the repertoire of voltage-gated sodium channels (NaV) in fluorescence-sorted mouse EC cells and found that Scn3a was highly expressed. Scn3a-encoded NaV1...
November 15, 2017: Scientific Reports
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