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Water homeostasys

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https://www.readbyqxmd.com/read/28543784/improvement-of-hydration-and-epidermal-barrier-function-in-human-skin-by-a-novel-compound-isosorbide-dicaprylate
#1
Ratan K Chaudhuri, Krzysztof Bojanowski
OBJECTIVE: The study involved the synthesis of a novel derivative of caprylic acid - isosorbide dicaprylate (IDC) - and the evaluation of its potential in improving water homeostasis and epidermal barrier function in human skin. METHODS: The effect of IDC on gene expression was assayed in skin organotypic cultures by DNA microarrays. The results were then confirmed for a few key genes by quantitative PCR, immuno- and cytochemistry. Final validation of skin hydration properties was obtained by four separate clinical studies...
May 24, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28542568/nesfatin-1-like-peptide-is-a-novel-metabolic-factor-that-suppresses-feeding-and-regulates-whole-body-energy-homeostasis-in-male-wistar-rats
#2
Kavishankar Gawli, Naresh Ramesh, Suraj Unniappan
Nucleobindin-1 has high sequence similarity to nucleobindin-2, which encodes the anorectic and metabolic peptide, nesfatin-1. We previously reported a nesfatin-1-like peptide (NLP), anorectic in fish and insulinotropic in mice islet beta-like cells. The main objective of this research was to determine whether NLP is a metabolic regulator in male Wistar rats. A single intraperitoneal (IP) injection of NLP (100 μg/kg BW) decreased food intake and increased ambulatory movement, without causing any change in total activity or energy expenditure when compared to saline-treated rats...
2017: PloS One
https://www.readbyqxmd.com/read/28537652/efficacy-and-safety-of-very-low-calorie-ketogenic-diet-a-double-blind-randomized-crossover-study
#3
C Colica, G Merra, A Gasbarrini, A De Lorenzo, G Cioccoloni, P Gualtieri, M A Perrone, S Bernardini, V Bernardo, L Di Renzo, M Marchetti
OBJECTIVE: To verify safety respect to weight loss, cardiometabolic diseases of short-term Very low-calorie ketogenic diets (VLCKDs, <800 kcal day-1). PATIENTS AND METHODS: Randomized cross-over trial with placebo. The study had no. 2 dietary treatment (DT), conducted in two arms: (1) VLCKD1 in which 50% of protein intake is replaced with synthetic amino acids; (2) VLCKD2 with placebo. The VLCKDs (<800 kcal day-1) were different in term of protein content and quality each arm lasted three weeks (wks)...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28536536/rna-seq-comparison-of-larval-and-adult-malpighian-tubules-of-the-yellow-fever-mosquito-aedes-aegypti-reveals-life-stage-specific-changes-in-renal-function
#4
Yiyi Li, Peter M Piermarini, Carlos J Esquivel, Hannah E Drumm, Faye D Schilkey, Immo A Hansen
Introduction: The life history of Aedes aegypti presents diverse challenges to its diuretic system. During the larval and pupal life stages mosquitoes are aquatic. With the emergence of the adult they become terrestrial. This shifts the organism within minutes from an aquatic environment to a terrestrial environment where dehydration has to be avoided. In addition, female mosquitoes take large blood meals, which present an entirely new set of challenges to salt and water homeostasis. Methods: To determine differences in gene expression associated with these different life stages, we performed an RNA-seq analysis of the main diuretic tissue in A...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28535907/suppression-of-epithelial-restitution-using-an-inhibitor-against-rho-associated-coiled-coil-containing-protein-kinase-aggravates-colitis-through-reduced-epithelial-expression-of-a-kinase-anchor-protein-13
#5
Yumi Kangawa, Toshinori Yoshida, Yutaka Yonezawa, Kiyoshi Maruyama, Shim-Mo Hayashi, Makoto Shibutani
In the gastrointestinal tract, the immediate healing response to mucosal damage is critical to sustain mucosal homeostasis. The migration of surrounding epithelial cells to cover the denuded area without proliferation is termed restitution, followed by early reparation of the damage. In this study, we determined the role of A-kinase anchor protein 13 (AKAP13) in mice with dextran sulphate sodium (DSS)-induced colitis upon mucosal injury and restitution, and investigated whether inhibition of Rho-associated coiled-coil containing protein kinase (ROCK), downstream effector of AKAP13, affects these mucosal responses...
May 20, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28527691/food-and-water-intake-body-temperature-and-metabolic-consequences-of-interleukin-1%C3%AE-microinjection-into-the-cingulate-cortex-of-the-rat
#6
B Csetényi, E Hormay, I Szabó, G Takács, B Nagy, K László, Z Karádi
In order to elucidate whether cytokine mechanisms of the cingulate cortex (cctx) are important in the central regulation of homeostasis, in the present study, feeding-metabolic effects of direct bilateral microinjection of interleukin-1β (IL-1β) into the cctx of the rat have been investigated. Short- (2h), medium (12h) and long-term (24h) food and water intakes and body temperature were measured after the intracerebral administration of this primary cytokine or vehicle solution, with or without paracetamol pretreatment...
May 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28525669/relationship-between-bioimpedance-determined-body-composition-and-peritoneal-transport-in-peritoneal-dialysis
#7
Bernardo M da Costa, Gloria Del Peso, Maria Auxiliadora Bajo, Gilda Carreño, Marta Ferreira, Carina Ferreira, Rafael Selgas
PURPOSE: In peritoneal dialysis (PD) patients, body fluid homeostasis is dependent on peritoneal elimination of water and solutes. Patients with less favorable peritoneal transport parameters should be more overhydrated. Despite this, the association between faster transport and overhydration (OH) is weak, and the factors that influence hydration status are still poorly characterized. Modified peritoneal equilibration tests (PET) offer us new parameters that might correlate better with hydration status, like free water transport (FWT)...
May 18, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28521238/transcriptomic-approach-for-assessment-of-the-impact-on-microalga-and-macrophyte-of-in-situ-exposure-in-river-sites-contaminated-by-chlor-alkali-plant-effluents
#8
Perrine Dranguet, Claudia Cosio, Séverine Le Faucheur, Rebecca Beauvais-Flück, Aline Freiburghaus, Isabelle A M Worms, Brice Petit, Natacha Civic, Mylène Docquier, Vera I Slaveykova
Water quality degradation is a worldwide problem, but risk evaluation of chronic pollution in-situ is still a challenge. The present study aimed to evaluate the potential of transcriptomic analyses in representative aquatic primary producers to assess the impact of environmental pollution in-situ: the microalga Chlamydomonas reinhardtii and the macrophyte Elodea nuttallii were exposed 2 h in the Babeni Reservoir of the Olt River impacted by chlor-alkali plant effluent release resulting in increased concentrations of Hg and NaCl in receiving water...
May 11, 2017: Water Research
https://www.readbyqxmd.com/read/28520802/aquatic-cycling-what-do-we-know-a-scoping-review-on-head-out-aquatic-cycling
#9
Stefanie Rewald, Ilse Mesters, Antoine F Lenssen, Jens Bansi, Johan Lambeck, Rob A de Bie, Benjamin Waller
Over the past few years, aquatic cycling has become a trending fitness activity. However, the literature has not been reviewed exhaustively. Therefore, using scoping review methodology, the aim of this review was to explore the current state of the literature concerning aquatic cycling. This study specifically focused on study designs, populations and outcomes. A comprehensive search of seven databases (PubMed, MEDLINE, Cinahl, Embase, PEDro,Web of Science, WorldCat) was conducted up to 30th September 2016...
2017: PloS One
https://www.readbyqxmd.com/read/28520217/the-gene-encoding-the-inwardly-rectifying-potassium-channel-kir4-1-may-be-involved-in-sudden-infant-death-syndrome
#10
Siri H Opdal, Åshild Vege, Arne Stray-Pedersen, Torleiv O Rognum
AIM: Disturbances in brain function and development may play a role in sudden infant death syndrome (SIDS). This Norwegian study aimed to test the hypothesis that specific variants of genes involved in water transport and potassium homeostasis would be predisposing factors for SIDS. METHODS: Genetic variation in the genes encoding aquaporin-4 (AQP4), Kir4.1 (KCNJ10) and α-syntrophin were analysed in 171 SIDS cases (62.6% male) with a median age of 15.5 (2-52) weeks and 398 adult controls (70...
May 18, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28512462/de-novo-transcriptome-profiling-of-flowers-flower-pedicels-and-pods-of-lupinus-luteus-yellow-lupine-reveals-complex-expression-changes-during-organ-abscission
#11
Paulina Glazinska, Waldemar Wojciechowski, Milena Kulasek, Wojciech Glinkowski, Katarzyna Marciniak, Natalia Klajn, Jacek Kesy, Jan Kopcewicz
Yellow lupine (Lupinus luteus L., Taper c.), a member of the legume family (Fabaceae L.), has an enormous practical importance. Its excessive flower and pod abscission represents an economic drawback, as proper flower and seed formation and development is crucial for the plant's productivity. Generative organ detachment takes place at the basis of the pedicels, within a specialized group of cells collectively known as the abscission zone (AZ). During plant growth these cells become competent to respond to specific signals that trigger separation and lead to the abolition of cell wall adhesion...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28511789/salicylic-acid-mediated-growth-physiological-and-proteomic-responses-in-two-wheat-varieties-under-drought-stress
#12
Marisha Sharma, Sunil K Gupta, Baisakhi Majumder, Vivek K Maurya, Farah Deeba, Afroz Alam, Vivek Pandey
Salicylic acid (SA) induced drought tolerance can be a key trait for increasing and stabilizing wheat production. These SA induced traits were studied in two Triticum aestivum L. varieties; drought tolerant, Kundan and drought sensitive, Lok1 under two different water deficit regimes: and rehydration at vegetative and flowering stages. SA alleviated the negative effects of water stress on photosynthesis more in Kundan. SA induced defense responses against drought by increasing antioxidative enzymes and osmolytes (proline and total soluble sugars)...
May 13, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28511604/duplicated-or-hybridized-peptide-functional-domains-promote-oral-homeostasis
#13
T Basiri, N D Johnson, E B Moffa, Y Mulyar, P L Serra Nunes, M A A M Machado, W L Siqueira
Proteins that have existed for millions of years frequently contain repeats of functional domains within their primary structure, thereby improving their functional capacity. In the evolutionary young statherin protein contained within the in vivo-acquired enamel pellicle (AEP), we identified a single functional domain (DR9) located within the protein N-terminal portion that exhibits a higher affinity for hydroxyapatite and more efficient protection against enamel demineralization compared to other native statherin peptides...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28507478/melatonin-regulates-the-aging-mouse-hippocampal-homeostasis-via-the-sirtuin1-foxo1-pathway
#14
Anorut Jenwitheesuk, Parichart Boontem, Prapimpun Wongchitrat, Jiraporn Tocharus, Sujira Mukda, Piyarat Govitrapong
Sirtuin1 (SIRT1) and forkhead box transcription factor O subfamily 1 (FOXO1) play vital roles in the maintenance of hippocampal neuronal homeostasis during aging. Our previous study showed that melatonin, a hormone mainly secreted by the pineal gland, restored the impaired memory of aged mice. Age-related neuronal energy deficits contribute to the pathogenesis of several neurodegenerative disorders. An attempt has been made to determine whether the effect of melatonin is mediated through the SIRT1-FOXO1 pathways...
2017: EXCLI journal
https://www.readbyqxmd.com/read/28506883/effects-of-cardiotonic-steroids-on-isolated-perfused-kidney-and-nhe3-activity-in-renal-proximal-tubules
#15
Alana N Godinho, Graciana T Costa, Nádia O Oliveira, Bruno A Cardi, Daniel Esdras A Uchoa, Edilberto R Silveira, Luis Eduardo M Quintas, François G Noël, Manassés C Fonteles, Krishnamurti M Carvalho, Cláudia F Santos, Lucília M A Lessa, Nilberto R F do Nascimento
Cardiotonic steroids (CS) are known as modulators of sodium and water homeostasis. These compounds contribute to the excretion of sodium under overload conditions due to its natriuretic property related to the inhibition of renal Na(+)/K(+)-ATPase (NKA) pump α1 isoform. NHE3, the main route for Na(+) reabsorption in the proximal tubule, depends on the Na(+) gradient generated by NKA pump. In the present study we aimed to investigate the effects of marinobufagin (MBG) and telocinobufagin (TBG) on the renal function of isolated perfused rat kidney and on the inhibition of NKA activity...
May 12, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28502574/diner-database-for-insect-neuropeptide-research
#16
Joseph G C Yeoh, Aniruddha A Pandit, Meet Zandawala, Dick R Nässel, Shireen-Anne Davies, Julian A T Dow
Neuropeptides are responsible for regulating a variety of functions, including development, metabolism, water and ion homeostasis, and as neuromodulators in circuits of the central nervous system. Numerous neuropeptides have been identified and characterized. However, both discovery and functional characterization of neuropeptides across the massive Class Insecta has been sporadic. To leverage advances in post-genomic technologies for this rapidly growing field, insect neuroendocrinology requires a consolidated, comprehensive and standardised resource for managing neuropeptide information...
May 11, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28497978/extraction-and-quantitation-of-nad-p-h
#17
Wenyun Lu, Lin Wang, Li Chen, Sheng Hui, Joshua D Rabinowitz
AIMS: Accurate analysis of dinucleotide redox cofactors NADPH, NADP+, NADH, and NAD+ from biological samples is important to understanding cellular redox homeostasis. Here we aim to develop a simple protocol for quenching metabolism and extracting NADPH that avoids interconversion among the reduced forms and the oxidized forms. RESULTS: We compared seven different solvents for quenching and extraction of cultured mammalian cells and mouse tissues. Extracts were analyzed by liquid chromatography-mass spectrometry (LC-MS)...
May 12, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28492807/biochemical-parameters-of-silver-catfish-rhamdia-quelen-after-transport-with-eugenol-or-essential-oil-of-lippia-alba-added-to-the-water
#18
J Salbego, C Toni, A G Becker, C C Zeppenfeld, C C Menezes, V L Loro, B M Heinzmann, B Baldisserotto
The transport of live fish is a routine practice in aquaculture and constitutes a considerable source of stress to the animals. The addition of anesthetic to the water used for fish transport can prevent or mitigate the deleterious effects of transport stress. This study investigated the effects of the addition of eugenol (EUG) (1.5 or 3.0 µL L-1) and essential oil of Lippia alba (EOL) (10 or 20 µL L-1) on metabolic parameters (glycogen, lactate and total protein levels) in liver and muscle, acetylcholinesterase activity (AChE) in muscle and brain, and the levels of protein carbonyl (PC), thiobarbituric acid reactive substances (TBARS) and nonprotein thiol groups (NPSH) and activity of glutathione-S-transferase in the liver of silver catfish (Rhamdia quelen; Quoy and Gaimard, 1824) transported for four hours in plastic bags (loading density of 169...
May 4, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28482796/effects-of-cold-acclimation-on-gene-expression-in-fall-field-cricket-gryllus-pennsylvanicus-ionoregulatory-tissues
#19
Lauren E Des Marteaux, Alexander H McKinnon, Hiroko Udaka, Jantina Toxopeus, Brent J Sinclair
BACKGROUND: Cold tolerance is a key determinant of temperate insect distribution and performance. Chill-susceptible insects lose ion and water homeostasis during cold exposure, but prior cold acclimation improves both cold tolerance and defense of homeostasis. The mechanisms underlying these processes are mostly unknown; cold acclimation is thought to enhance ion transport in the cold and/or prevent leak of water and ions. To identify candidate mechanisms of cold tolerance plasticity we generated transcriptomes of ionoregulatory tissues (hindgut and Malpighian tubules) from Gryllus pennsylvanicus crickets and compared gene expression in warm- and cold-acclimated individuals...
May 8, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28481231/zeolite-containing-mixture-supplementation-ameliorated-dextran-sodium-sulfate-induced-colitis-in-mice-by-suppressing-the-inflammatory-bowel-disease-pathway-and-improving-apoptosis-in-colon-mucosa
#20
Weida Lyu, Huijuan Jia, Chuanzong Deng, Kenji Saito, Seigo Yamada, Hisanori Kato
Inflammatory bowel disease (IBD) is induced by multiple environmental factors, and there is still no known treatment capable of curing the disease completely. We propose a zeolite-containing mixture (Hydryeast(®), HY)-a multi-component nutraceutical of which the main ingredients are Azumaceramics (mixture of zeolite and oyster shell burned under high temperature), citric acid, red rice yeast (monascus) and calcium stearate-as a nutraceutical intervention in IBD to ameliorate dextran sodium sulfate (DSS)-induced colitis...
May 6, 2017: Nutrients
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