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Regulation water electrolytes

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https://www.readbyqxmd.com/read/28436529/modifying-surface-forces-through-control-of-surface-potentials
#1
Ran Tivony, Jacob Klein
Combining direct surface force measurements with in situ regulation of surface potential provides an exceptional opportunity for investigating and manipulating interfacial phenomena. Recently, we studied the interaction between gold and mica surfaces in water with no added salt, while controlling the metal potential, and found that the surface charge at the metal may vary, and possibly even change its sign, as it progressively approaches the (constant-charge) mica surface [Langmuir, 2015, 31(47), 12845-12849]...
April 24, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28421081/mechanistic-insight-into-salt-tolerance-of-acacia-auriculiformis-the-importance-of-ion-selectivity-osmoprotection-tissue-tolerance-and-na-exclusion
#2
Md M Rahman, Md A Rahman, Md G Miah, Satya R Saha, M A Karim, Mohammad G Mostofa
Salinity, one of the major environmental constraints, threatens soil health and consequently agricultural productivity worldwide. Acacia auriculiformis, being a halophyte, offers diverse benefits against soil salinity; however, the defense mechanisms underlying salt-tolerant capacity in A. auriculiformis are still elusive. In this study, we aimed to elucidate mechanisms regulating the adaptability of the multi-purpose perennial species A. auriculiformis to salt stress. The growth, ion homeostasis, osmoprotection, tissue tolerance and Na(+) exclusion, and anatomical adjustments of A...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28405139/regulation-of-intestinal-permeability-the-role-of-proteases
#3
REVIEW
Hanne Van Spaendonk, Hannah Ceuleers, Leonie Witters, Eveline Patteet, Jurgen Joossens, Koen Augustyns, Anne-Marie Lambeir, Ingrid De Meester, Joris G De Man, Benedicte Y De Winter
The gastrointestinal barrier is - with approximately 400 m(2) - the human body's largest surface separating the external environment from the internal milieu. This barrier serves a dual function: permitting the absorption of nutrients, water and electrolytes on the one hand, while limiting host contact with noxious luminal antigens on the other hand. To maintain this selective barrier, junction protein complexes seal the intercellular space between adjacent epithelial cells and regulate the paracellular transport...
March 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28379482/investigating-proteins-and-proteases-composing-amniotic-and-allantoic-fluids-during-chicken-embryonic-development
#4
M Da Silva, V Labas, Y Nys, S Réhault-Godbert
In amniotes, the amniotic fluid is a significant contributor to fetal development and health. While numerous studies have been conducted in mammalian amniotic fluid, the composition of amniotic and other extraembryonic fluids in avian egg along with their physiological functions remain largely unexplored. In such a context, our objective was to characterize the chicken amniotic fluid (AmF) and allantoic fluid (AlF) properties, protein composition, and some associated functions from day 8 to day 16 of incubation...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28373609/nutritional-counseling-regulates-interdialytic-weight-gain-and-blood-pressure-in-outpatients-receiving-maintenance-hemodialysis
#5
Atsuko Sakai, Hisayo Hamada, Keiko Hara, Kyoko Mori, Takayuki Uchida, Takashi Mizuguchi, Jun Minaguchi, Kenji Shima, Shu Kawashima, Yasuhiro Hamada, Takeshi Nikawa
Maintenance hemodialysis outpatients must limit salt and water intake to maintain electrolyte balance and blood pressure. In Kawashima Hospital, nationally registered dietitians provide hemodialysis patients with monthly nutritional counseling. We investigated whether nutritional counseling affects interdialytic weight gain (IDWG) and blood pressure. We investigated 48 hemodialysis patients whose monthly average IDWG ratio to dry weight exceeded 5.1% and who had not had a long-term hospital admittance of > 1 month...
2017: Journal of Medical Investigation: JMI
https://www.readbyqxmd.com/read/28372749/electrochemical-inactivation-of-cyanobacteria-and-microcystin-degradation-using-a-boron-doped-diamond-anode-a-potential-tool-for-cyanobacterial-bloom-control
#6
Andrej Meglič, Anja Pecman, Tinkara Rozina, Domen Leštan, Bojan Sedmak
Cyanobacterial blooms are global phenomena that can occur in calm and nutrient-rich (eutrophic) fresh and marine waters. Human exposure to cyanobacteria and their biologically active products is possible during water sports and various water activities, or by ingestion of contaminated water. Although the vast majority of harmful cyanobacterial products are confined to the interior of the cells, these are eventually released into the surrounding water following natural or artificially induced cell death. Electrochemical oxidation has been used here to damage cyanobacteria to halt their proliferation, and for microcystin degradation under in-vitro conditions...
March 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28364692/the-effect-of-three-angiotensin-converting-enzyme-inhibitors-on-kynurenic-acid-production-in-rat-kidney-in-vitro
#7
Izabela Zakrocka, Tomasz Kocki, Waldemar A Turski
BACKGROUND: The renin-angiotensin system (RAS) is commonly known to regulate blood pressure, water and electrolyte homeostasis, however it also exerts paracrine and autocrine actions on the kidney. Angiotensin-converting enzyme inhibitors (ACE-Is), alongside their hypotensive properties, have been shown to decrease kidney function decline in animal models of nephropathy. Glutamate (GLU) is the main stimulatory neurotransmitter in the central nervous system, however its importance in the periphery should also be considered...
January 31, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28360221/nfat5-and-slc4a10-loci-associate-with-plasma-osmolality
#8
Carsten A Böger, Mathias Gorski, Gearoid M McMahon, Huichun Xu, Yen-Pei C Chang, Peter J van der Most, Gerjan Navis, Ilja M Nolte, Martin H de Borst, Weihua Zhang, Benjamin Lehne, Marie Loh, Sian-Tsung Tan, Eric Boerwinkle, Morgan E Grams, Peggy Sekula, Man Li, Beth Wilmot, James G Moon, Paul Scheet, Francesco Cucca, Xiangjun Xiao, Leo-Pekka Lyytikäinen, Graciela Delgado, Tanja B Grammer, Marcus E Kleber, Sanaz Sedaghat, Fernando Rivadeneira, Tanguy Corre, Zoltan Kutalik, Sven Bergmann, Carrie M Nielson, Priya Srikanth, Alexander Teumer, Martina Müller-Nurasyid, Anne Catharina Brockhaus, Arne Pfeufer, Wolfgang Rathmann, Annette Peters, Martha Matsumoto, Mariza de Andrade, Elizabeth J Atkinson, Cassianne Robinson-Cohen, Ian H de Boer, Shih-Jen Hwang, Iris M Heid, Martin Gögele, Maria Pina Concas, Toshiko Tanaka, Stefania Bandinelli, Mike A Nalls, Andrew Singleton, Salman M Tajuddin, Adebowale Adeyemo, Jie Zhou, Ayo Doumatey, Shannon McWeeney, Joanne Murabito, Nora Franceschini, Michael Flessner, Michael Shlipak, James G Wilson, Guanjie Chen, Charles N Rotimi, Alan B Zonderman, Michele K Evans, Luigi Ferrucci, Olivier Devuyst, Mario Pirastu, Alan Shuldiner, Andrew A Hicks, Peter Paul Pramstaller, Bryan Kestenbaum, Sharon L R Kardia, Stephen T Turner, LifeLines Cohort Study, Tamara Ellefson Briske, Christian Gieger, Konstantin Strauch, Christa Meisinger, Thomas Meitinger, Uwe Völker, Matthias Nauck, Henry Völzke, Peter Vollenweider, Murielle Bochud, Gerard Waeber, Mika Kähönen, Terho Lehtimäki, Winfried März, Abbas Dehghan, Oscar H Franco, Andre G Uitterlinden, Albert Hofman, Herman A Taylor, John C Chambers, Jaspal S Kooner, Caroline S Fox, Robert Hitzemann, Eric S Orwoll, Cristian Pattaro, David Schlessinger, Anna Köttgen, Harold Snieder, Afshin Parsa, David M Cohen
Disorders of water balance, an excess or deficit of total body water relative to body electrolyte content, are common and ascertained by plasma hypo- or hypernatremia, respectively. We performed a two-stage genome-wide association study meta-analysis on plasma sodium concentration in 45,889 individuals of European descent (stage 1 discovery) and 17,637 additional individuals of European descent (stage 2 replication), and a transethnic meta-analysis of replicated single-nucleotide polymorphisms in 79,506 individuals (63,526 individuals of European descent, 8765 individuals of Asian Indian descent, and 7215 individuals of African descent)...
March 30, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28351760/extreme-nitrite-tolerance-in-the-clown-knifefish-chitala-ornata-is-linked-to-up-regulation-of-methaemoglobin-reductase-activity
#9
Le Thi Hong Gam, Frank Bo Jensen, Christian Damsgaard, Do Thi Thanh Huong, Nguyen Thanh Phuong, Mark Bayley
The clown knifefish is a facultative air breather, which is widely farmed in freshwater ponds in Vietnam. Here we report a very high nitrite tolerance (96h LC50 of 7.82mM) in this species and examine the effects of 1mM (LC5) and 2.5mM (LC10) ambient nitrite on haemoglobin (Hb) derivatives, electrolyte levels, acid-base status, and total body water content during 7days of exposure. Furthermore, we tested the hypothesis that erythrocyte methaemoglobin (metHb) reductase activity is upregulated by nitrite exposure...
March 19, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28348113/nongenomic-effects-via-the-mineralocorticoid-receptor
#10
Stefanie Ruhs, Alexander Nolze, Ralf Hübschmann, Claudia Grossmann
The mineralocorticoid receptor (MR) belongs to the steroid hormone receptor family and classically functions as a ligand-dependent transcription factor. It is involved in water-electrolyte homeostasis and blood pressure regulation but independently from these effects also furthers inflammation, fibrosis, hypertrophy and remodeling in cardiovascular tissues. Next to genomic effects, aldosterone elicits very rapid actions within minutes that do not require transcription or translation and that occur both in classical MR epithelial target organs like kidney and colon but also in nonepithelial tissues with special pathophysiological relevance like heart and vasculature and adipose tissue...
March 27, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28338609/ectopic-expression-of-aeluropus-littoralis-plasma-membrane-protein-gene-altmp1-confers-abiotic-stress-tolerance-in-transgenic-tobacco-by-improving-water-status-and-cation-homeostasis
#11
Walid Ben Romdhane, Rania Ben-Saad, Donaldo Meynard, Jean-Luc Verdeil, Jalel Azaza, Nabil Zouari, Lotfi Fki, Emmanuel Guiderdoni, Abdullah Al-Doss, Afif Hassairi
We report here the isolation and functional analysis of AlTMP1 gene encoding a member of the PMP3 protein family. In Aeluropus littoralis, AlTMP1 is highly induced by abscisic acid (ABA), cold, salt, and osmotic stresses. Transgenic tobacco expressing AlTMP1 exhibited enhanced tolerance to salt, osmotic, H₂O₂, heat and freezing stresses at the seedling stage. Under greenhouse conditions, the transgenic plants showed a higher level of tolerance to drought than to salinity. Noteworthy, AlTMP1 plants yielded two- and five-fold more seeds than non-transgenic plants (NT) under salt and drought stresses, respectively...
March 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28337744/tknockdown-of-an-inflorescence-meristem-specific-cytokinin-oxidase-osckx2-in-rice-reduces-yield-penalty-under-salinity-stress-condition
#12
Rohit Joshi, Khirod Kumar Sahoo, Amit Kumar Tripathi, Ritesh Kumar, Brijesh Kumar Gupta, Ashwani Pareek, Sneh Lata Singla-Pareek
Cytokinins play a significant role in determining grain yield in plants. Cytokinin oxidases catalyze irreversible degradation of cytokinins and hence modulate cellular cytokinin levels. Here, we studied the role of an inflorescence meristem-specific rice cytokinin oxidase - OsCKX2, in reducing yield penalty under salinity stress conditions. We utilized an RNAi-based approach to study the function of OsCKX2 in maintaining grain yield under salinity stress condition. Ultra-performance liquid chromatography (UPLC)-based estimation revealed a significant increase in cytokinins in the inflorescence meristem of OsCKX2-knockdown plants...
March 24, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28336818/increased-exposure-to-sodium-during-pregnancy-and-lactation-changes-basal-and-induced-behavioral-and-neuroendocrine-responses-in-adult-male-offspring
#13
Marcia S Silva, Fabiana Lúcio-Oliveira, Andre Souza Mecawi, Lucas F Almeida, Silvia G Ruginsk, Michael P Greenwood, Mingkwan Greenwood, Laura Vivas, Lucila L K Elias, David Murphy, José Antunes-Rodrigues
Excessive sodium (Na(+)) intake in modern society has been associated with several chronic disorders such as hypertension. Several studies suggest that early life events can program physiological systems and lead to functional changes in adulthood. Therefore, we investigated behavioral and neuroendocrine responses under basal conditions and after 48 h of water deprivation in adult (60-day-old Wistar rats) male, Wistar rats originating from dams were offered only water or 0.15 mol/L NaCl during pregnancy and lactation...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28335864/using-zebrafish-to-study-kidney-development-and-disease
#14
Stephanie Jerman, Zhaoxia Sun
The kidneys are a crucial pair of organs that are responsible for filtering the blood to remove waste, maintain electrolyte and water homeostasis, and regulate blood pressure. There are a number of factors, both genetic and environmental, that can impair the function of the kidneys resulting in significant morbidity and mortality for millions of people affected by kidney disease worldwide. The zebrafish, Danio rerio, has emerged as an attractive vertebrate model in the study of kidney development and disease and has proven to be a powerful tool in the advancement of how kidney development occurs in vertebrates and how the kidney repairs itself after injury...
2017: Current Topics in Developmental Biology
https://www.readbyqxmd.com/read/28334275/identification-of-a-novel-bzip-transcription-factor-in-camellia-sinensis-as-a-negative-regulator-of-freezing-tolerance-in-transgenic-arabidopsis
#15
Lu Wang, Hongli Cao, Wenjun Qian, Lina Yao, Xinyuan Hao, Nana Li, Yajun Yang, Xinchao Wang
Background and Aims: Basic region/leucine zipper (bZIP) transcription factors play vital roles in the abiotic stress response of plants. However, little is known about the function of bZIP genes in Camellia sinensis . Methods: CsbZIP6 was overexpressed in Arabidopsis thaliana . Effects of CsbZIP6 overexpression on abscisic acid (ABA) sensitivity, freezing tolerance and the expression of cold-responsive genes in arabidopsis were studied. Key Results: CsbZIP6 was induced during cold acclimation in tea plant...
March 14, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28333068/effects-of-reactive-oxygen-species-on-tubular-transport-along-the-nephron
#16
REVIEW
Agustin Gonzalez-Vicente, Jeffrey L Garvin
Reactive oxygen species (ROS) are oxygen-containing molecules naturally occurring in both inorganic and biological chemical systems. Due to their high reactivity and potentially damaging effects to biomolecules, cells express a battery of enzymes to rapidly metabolize them to innocuous intermediaries. Initially, ROS were considered by biologists as dangerous byproducts of respiration capable of causing oxidative stress, a condition in which overproduction of ROS leads to a reduction in protective molecules and enzymes and consequent damage to lipids, proteins, and DNA...
March 23, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28316047/exogenous-application-of-plant-growth-regulators-pgrs-induces-chilling-tolerance-in-short-duration-hybrid-maize
#17
Muhammad Ahmed Waqas, Imran Khan, Muhammad Javaid Akhter, Mehmood Ali Noor, Umair Ashraf
Chilling stress hampers the optimal performance of maize under field conditions precipitously by inducing oxidative stress. To confer the damaging effects of chilling stress, the present study aimed to investigate the effects of some natural and synthetic plant growth regulators, i.e., salicylic acid (SA), thiourea (TU), sorghum water extract (SWE), and moringa leaf extract (MLE) on chilling stress tolerance in autumn maize hybrid. Foliar application of growth regulators at low concentrations was carried out at six leaf (V6) and tasseling stages...
March 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28303369/clinical-aspects-of-changes-in-water-and-sodium-homeostasis-in-the-elderly
#18
REVIEW
Christian A Koch, Tibor Fulop
The population of elderly individuals is increasing worldwide. With aging, various hormonal and kidney changes occur, both affecting water homeostasis. Aging is a risk factor for chronic kidney disease (CKD) and many features of CKD are reproduced in the aging kidney. Dehydration and hyperosmolarity can be triggered by diminished thirst perception in this population. Elderly with dementia are especially susceptible to abnormalities of their electrolyte and body water homeostasis and should be (re-)assessed for polypharmacy...
March 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28259134/role-of-reactive-oxygen-species-in-mast-cell-degranulation
#19
REVIEW
M A Chelombitko, A V Fedorov, O P Ilyinskaya, R A Zinovkin, B V Chernyak
Mast cells are a heterogeneous multifunctional cellular population that promotes connective tissue homeostasis by slow release of biologically active substances, affecting primarily the permeability of vessels and vascular tone, maintenance of electrolyte and water balance, and composition of the extracellular matrix. Along with this, they can rapidly release inflammatory mediators and chemotactic factors that ensure the mobilization of effector innate immune cells to fight against a variety of pathogens. Furthermore, they play a key role in initiation of allergic reactions...
December 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/28258576/diabetes-insipidus
#20
H A Jenny Lu
Disruption of water and electrolyte balance is frequently encountered in clinical medicine. Regulating water metabolism is critically important. Diabetes insipidus (DI) presented with excessive water loss from the kidney is a major disorder of water metabolism. To understand the molecular and cellular mechanisms and pathophysiology of DI and rationales of clinical management of DI is important for both research and clinical practice. This chapter will first review various forms of DI focusing on central diabetes insipidus (CDI) and nephrogenic diabetes insipidus (NDI ) ...
2017: Advances in Experimental Medicine and Biology
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