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Water homeostasys

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https://www.readbyqxmd.com/read/28944006/regulation-of-gene-expression-is-associated-with-tolerance-of-the-arctic-copepod-calanus-glacialis-to-co2-acidified-sea-water
#1
Allison Bailey, Pierre De Wit, Peter Thor, Howard I Browman, Reidun Bjelland, Steven Shema, David M Fields, Jeffrey A Runge, Cameron Thompson, Haakon Hop
Ocean acidification is the increase in seawater pCO 2 due to the uptake of atmospheric anthropogenic CO 2, with the largest changes predicted to occur in the Arctic seas. For some marine organisms, this change in pCO 2, and associated decrease in pH, represents a climate change-related stressor. In this study, we investigated the gene expression patterns of nauplii of the Arctic copepod Calanus glacialis cultured at low pH levels. We have previously shown that organismal-level performance (development, growth, respiration) of C...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28940558/vrac-unravelling-the-complexity-of-lrrc8-subunits-regulation-by-oxidation
#2
Jonas Friard, Isabelle Rubera, Christophe Duranton
To maintain ion homeostasis, cells must regulate their volume. Water flux is controlled through the exchange of ions and osmolytes between the cytosol and the extracellular compartment. This article is protected by copyright. All rights reserved.
September 20, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28936221/metabolite-profiling-of-barley-grains-subjected-to-water-stress-to-explain-the-genotypic-difference-in-drought-induced-impacts-on-malting-quality
#3
Xiaojian Wu, Kangfeng Cai, Guoping Zhang, Fanrong Zeng
Grain weight and protein content will be reduced and increased, respectively, when barley is subjected to water stress after anthesis, consequently deteriorating the malt quality. However, such adverse impact of water stress differs greatly among barley genotypes. In this study, two Tibetan wild barley accessions and two cultivated varieties differing in water stress tolerance were used to investigate the genotypic difference in metabolic profiles during grain-filling stage under drought condition. Totally, 71 differently accumulated metabolites were identified, including organic acids, amino acids/amines, and sugars/sugar alcohols...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28931009/ndfip-allows-nedd4-nedd4l-induced-aqp2-ubiquitination-and-degradation
#4
Christiane Trimpert, Daniel Wesche, Theun de Groot, Martha M Pimentel Rodriguez, Victoria Wong, Dennis T M van den Berg, Lydie Cheval, Carolina A Ariza, Alain Doucet, Igor Stagljar, Peter M T Deen
Regulation of our water homeostasis is fine-tuned by dynamic translocation of Aquaporin-2 (AQP2)-bearing vesicles to and from the plasma membrane of renal principal cells. Whereas binding of vasopressin to its type-2 receptor initiates a cAMP-protein kinase A cascade and AQP2 translocation to the apical membrane, this is counteracted by protein kinase C-activating hormones, resulting in ubiquitination-dependent internalization of AQP2. The proteins targeting AQP2 for ubiquitin-mediated degradation are unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28929113/impact-of-fish-oil-supplementation-and-interruption-of-fructose-ingestion-on-glucose-and-lipid-homeostasis-of-rats-drinking-different-concentrations-of-fructose
#5
Paola M Sulis, Katia Motta, Amanda M Barbosa, Matheus H Besen, Julia S da Silva, Everson A Nunes, Alex Rafacho
Background. Continuous fructose consumption may cause elevation of circulating triacylglycerol. However, how much of this alteration is reverted after the removal of fructose intake is not known. We explored this question and compared the efficacy of this approach with fish oil supplementation. Methods. Male Wistar rats were divided into the following groups: control (C), fructose (F) (water intake with 10% or 30% fructose for 9 weeks), fish oil (FO), and fructose/fish oil (FFO). Fish oil was supplemented only for the last 33 days of fructose ingestion...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28928461/time-dependent-effects-of-ipragliflozin-on-behaviour-and-energy-homeostasis-in-normal-and-type-2-diabetic-rats-continuous-glucose-telemetry-analysis
#6
Hiroyuki Iuchi, Masaya Sakamoto, Daisuke Matsutani, Hirofumi Suzuki, Yosuke Kayama, Norihiko Takeda, Susumu Minamisawa, Kazunori Utsunomiya
Sodium-glucose cotransporter 2 (SGLT2) inhibitors are oral antidiabetic drugs that promote urinary glucose excretion. Conversely, they cause behavioural changes, such as hyperphagia, that result in a positive energy balance. The relationship between energy homeostasis and SGLT2 inhibitors-induced behavioural changes remains unclear. Here we show that ipragliflozin, a SGLT2 inhibitor, time-dependently affects behaviour and enhances energy expenditure in normal and type 2 diabetic Goto-Kakizaki (GK) rats, using continuous glucose telemetry...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28920920/er-associated-degradation-is-required-for-vasopressin-prohormone-processing-and-systemic-water-homeostasis
#7
Guojun Shi, Diane Somlo, Geun Hyang Kim, Cristina Prescianotto-Baschong, Shengyi Sun, Nicole Beuret, Qiaoming Long, Jonas Rutishauser, Peter Arvan, Martin Spiess, Ling Qi
Peptide hormones are crucial regulators of many aspects of human physiology. Mutations that alter these signaling peptides are associated with physiological imbalances that underlie diseases. However, the conformational maturation of peptide hormone precursors (prohormones) in the ER remains largely unexplored. Here, we report that conformational maturation of proAVP, the precursor for the antidiuretic hormone arginine-vasopressin, within the ER requires the ER-associated degradation (ERAD) activity of the Sel1L-Hrd1 protein complex...
September 18, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28915389/choline-prevents-fetal-overgrowth-and-normalizes-placental-fatty-acid-and-glucose-metabolism-in-a-mouse-model-of-maternal-obesity
#8
Juha Nam, Esther Greenwald, Chauntelle Jack-Roberts, Tamara T Ajeeb, Olga V Malysheva, Marie A Caudill, Kathleen Axen, Anjana Saxena, Ekaterina Semernina, Khatia Nanobashvili, Xinyin Jiang
Maternal obesity increases placental transport of macronutrients, resulting in fetal overgrowth and obesity later in life. Choline participates in fatty acid metabolism, serves as a methyl donor and influences growth signaling, which may modify placental macronutrient homeostasis and affect fetal growth. Using a mouse model of maternal obesity, we assessed the effect of maternal choline supplementation on preventing fetal overgrowth and restoring placental macronutrient homeostasis. C57BL/6J mice were fed either a high-fat (HF, 60% kcal from fat) diet or a normal (NF, 10% kcal from fat) diet with a drinking supply of either 25 mM choline chloride or control purified water, respectively, beginning 4 weeks prior to mating until gestational day 12...
August 12, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28912902/effects-of-dapagliflozin-on-body-composition-and-liver-tests-in-patients-with-nonalcoholic-steatohepatitis-associated-with-type-2-diabetes-mellitus-a-prospective-open-label-uncontrolled-study
#9
Hiroshi Tobita, Shuichi Sato, Tatsuya Miyake, Shunji Ishihara, Yoshikazu Kinoshita
BACKGROUND: Nonalcoholic steatohepatitis (NASH) is an active form of nonalcoholic fatty liver disease. Risk factors for NASH include type 2 diabetes mellitus (T2DM) and obesity. Sodium-glucose cotransporter 2 (SGLT2) inhibitors used to treat T2DM prevent glucose reabsorption in the kidney and increase glucose urinary excretion. Dapagliflozin is a potent, selective SGLT2 inhibitor that reduces hyperglycemia in patients with T2DM and has been demonstrated to reduce some complications associated with NASH in rodent models...
2017: Current Therapeutic Research, Clinical and Experimental
https://www.readbyqxmd.com/read/28912799/triportheus-albus-cope-1872-in-the-blackwater-clearwater-and-whitewater-of-the-amazon-a-case-of-phenotypic-plasticity
#10
José D A Araújo, Andrea Ghelfi, Adalberto L Val
The Amazon basin includes 1000s of bodies of water, that are sorted according to their color in three types: blackwater, clearwater, and whitewater, which significantly differ in terms of their physicochemical parameters. More than 3,000 species of fish live in the rivers of the Amazon, among them, the sardine, Triportheus albus, which is one of the few species that inhabit all three types of water. The purpose of our study was to analyze if the gene expression of T. albus is determined by the different types of water, that is, if the species presents phenotypic plasticity to live in blackwater, clearwater, and whitewater...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28911640/long-term-feeding-of-red-algae-gelidium-amansii-ameliorates-glucose-and-lipid-metabolism-in-a-high-fructose-diet-impaired-glucose-tolerance-rat-model
#11
Hshuan-Chen Liu, Chun-Ju Chang, Tsung-Han Yang, Meng-Tsan Chiang
This study was designed to investigate the effect of Gelidium amansii (GA) on carbohydrate and lipid metabolism in rats with high fructose (HF) diet (57.1% w/w). Five-week-old male Sprague-Dawley rats were fed a HF diet to induce glucose intolerance and hyperlipidemia. The experiment was divided into three groups: (1) control diet group (Con); (2) HF diet group (HF); and (3) HF with GA diet group (HF + 5% GA). The rats were fed the experimental diets and drinking water ad libitum for 23 weeks. The results showed that GA significantly decreased retroperitoneal fat mass weight of HF diet-fed rats...
July 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28903954/quantity-and-source-of-dietary-protein-influence-metabolite-production-by-gut-microbiota-and-rectal-mucosa-gene-expression-a-randomized-parallel-double-blind-trial-in-overweight-humans
#12
Martin Beaumont, Kevin Joseph Portune, Nils Steuer, Annaïg Lan, Victor Cerrudo, Marc Audebert, Florent Dumont, Giulia Mancano, Nadezda Khodorova, Mireille Andriamihaja, Gheorghe Airinei, Daniel Tomé, Robert Benamouzig, Anne-Marie Davila, Sandrine Paule Claus, Yolanda Sanz, François Blachier
Background: Although high-protein diets (HPDs) are frequently consumed for body-weight control, little is known about the consequences for gut microbiota composition and metabolic activity and for large intestine mucosal homeostasis. Moreover, the effects of HPDs according to the source of protein need to be considered in this context.Objective: The objective of this study was to evaluate the effects of the quantity and source of dietary protein on microbiota composition, bacterial metabolite production, and consequences for the large intestinal mucosa in humans...
September 13, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28899960/overexpression-of-ring-domain-e3-ligase-zmxerico1-confers-drought-tolerance-through-regulation-of-aba-homeostasis
#13
Norbert Brugiere, Wenjing Zhang, John Xu, Eric J Scolaro, Cheng Lu, Robel Y Kahsay, Rie Kise, Libby Trecker, Robert W Williams, Salim Hakimi, Xiping Niu, Renee Lafitte, Jeffrey E Habben
Drought stress is one of the main environmental problems encountered by crop growers. Reduction in arable land area and reduced water availability make it paramount to identify and develop strategies to allow crops to be more resilient in water limiting environments. The plant hormone abscisic acid (ABA) plays an important role in the plants' response to drought stress through its control of stomatal aperture and water transpiration; and transgenic modulation of ABA levels therefore represents an attractive avenue to improve the drought tolerance of crops...
September 12, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28890580/the-role-of-compost-in-stabilizing-the-microbiological-and-biochemical-properties-of-zinc-stressed-soil
#14
Rafał Strachel, Jadwiga Wyszkowska, Małgorzata Baćmaga
The progressive development of civilization and intensive industrialization has contributed to the global pollution of the natural environment by heavy metals, especially the soil. Degraded soils generally contain less organic matter, and thus, their homeostasis is more often disturbed, which in turn manifests in changes in biological and physicochemical properties of the soil. Therefore, new possibilities and solutions for possible neutralization of these contaminations are sought, inter alia, through reclamation of degraded land...
2017: Water, Air, and Soil Pollution
https://www.readbyqxmd.com/read/28887070/decreased-serum-sodium-levels-predict-symptomatic-vasospasm-in-patients-with-subarachnoid-hemorrhage
#15
Yoichi Uozumi, Takashi Mizobe, Hirohito Miyamoto, Noriaki Ashida, Tsuyoshi Katsube, Shotaro Tatsumi, Mitsugu Nakamura, Eiji Kohmura
BACKGROUND: Symptomatic vasospasm is a major cause of morbidity and mortality in subarachnoid hemorrhage patients. Hyponatremia and dehydration due to natriuresis after subarachnoid hemorrhage are related to symptomatic vasospasm. Therefore, most institutions are currently targeting euvolemia and eunatremia in subarachnoid hemorrhage patients to avoid complications. We retrospectively investigated the predictors of symptomatic vasospasm with respect to water and sodium homeostasis, while maintaining euvolemia and eunatremia after subarachnoid hemorrhage...
September 5, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28879625/effects-of-arsenic-compounds-on-microminerals-content-and-antioxidant-enzyme-activities-in-rat-liver
#16
Ana Cláudia Ferreira Souza, Sarah Cozzer Marchesi, Graziela Domingues de Almeida Lima, Mariana Machado-Neves
Interactions of arsenic with essential trace elements may result in disturbances on body homeostasis. In the present study, we aimed to investigate the effects of different arsenic compounds on micromineral content and antioxidant enzyme activities in rat liver. Male Wistar rats were randomly divided into five groups and exposed to sodium arsenite and sodium arsenate at 0.01 and 10 mg/L for 8 weeks in drinking water. The concentration of arsenic increased in the liver of all arsenic-exposed animals. The proportion of zinc and copper increased in animals exposed to 0...
September 6, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28874461/selective-deletion-of-renin-b-in-the-brain-alters-drinking-and-metabolism
#17
Keisuke Shinohara, Pablo Nakagawa, Javier Gomez, Donald A Morgan, Nicole K Littlejohn, Matthew D Folchert, Benjamin J Weidemann, Xuebo Liu, Susan A Walsh, Laura L Ponto, Kamal Rahmouni, Justin L Grobe, Curt D Sigmund
The brain-specific isoform of renin (Ren-b) has been proposed as a negative regulator of the brain renin-angiotensin system (RAS). We analyzed mice with a selective deletion of Ren-b which preserved expression of the classical renin (Ren-a) isoform. We reported that Ren-b(Null) mice exhibited central RAS activation and hypertension through increased expression of Ren-a, but the dipsogenic and metabolic effects in Ren-b(Null) mice are unknown. Fluid intake was similar in control and Ren-b(Null) mice at baseline and both exhibited an equivalent dipsogenic response to deoxycorticosterone acetate-salt...
September 5, 2017: Hypertension
https://www.readbyqxmd.com/read/28873454/de-novo-transcriptome-assembly-and-analysis-of-differential-gene-expression-in-response-to-drought-in-european-beech
#18
Markus Müller, Sarah Seifert, Torben Lübbe, Christoph Leuschner, Reiner Finkeldey
Despite the ecological and economic importance of European beech (Fagus sylvatica L.) genomic resources of this species are still limited. This hampers an understanding of the molecular basis of adaptation to stress. Since beech will most likely be threatened by the consequences of climate change, an understanding of adaptive processes to climate change-related drought stress is of major importance. Here, we used RNA-seq to provide the first drought stress-related transcriptome of beech. In a drought stress trial with beech saplings, 50 samples were taken for RNA extraction at five points in time during a soil desiccation experiment...
2017: PloS One
https://www.readbyqxmd.com/read/28872648/micrornas-regulate-the-main-events-in-rice-drought-stress-response-by-manipulating-the-water-supply-to-shoots
#19
Ehsan Mohseni Fard, Behnam Bakhshi, Mohammad Farsi, Amin Mirshamsi Kakhki, Nava Nikpay, Mohammad Ali Ebrahimi, Mohsen Mardi, Ghasem Hosseini Salekdeh
MicroRNAs (miRNAs) are small endogenous regulatory RNAs that are involved in a variety of biological processes related to proliferation, development, and response to biotic and abiotic stresses. miRNA profiles of rice (Oryza sativa L. cv. IR64.) leaves in a partial root zone drying (PRD) system were analysed using a high-throughput sequencing approach to identify miRNAs associated with drought signalling. The treatments performed in this study were as follows: well-watered ("wet" roots, WW), wherein both halves of the pot were watered daily; drought ("dry" roots, DD), wherein water was withheld from both halves of the pot; and well-watered/drought ("wet" and "dry" roots, WD), wherein one half of each pot was watered daily, the same as in WW, and water was withheld from the other part, the same as in DD...
September 5, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28871493/plant-and-animal-aquaporins-crosstalk-what-can-be-revealed-from-distinct-perspectives
#20
REVIEW
Moira Sutka, Gabriela Amodeo, Marcelo Ozu
Aquaporins (AQPs) can be revisited from a distinct and complementary perspective: the outcome from analyzing them from both plant and animal studies. (1) The approach in the study. Diversity found in both kingdoms contrasts with the limited number of crystal structures determined within each group. While the structure of almost half of mammal AQPs was resolved, only a few were resolved in plants. Strikingly, the animal structures resolved are mainly derived from the AQP2-lineage, due to their important roles in water homeostasis regulation in humans...
September 4, 2017: Biophysical Reviews
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