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Body water and electrolytes

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https://www.readbyqxmd.com/read/28409340/drosophila-malpighian-tubules-a-model-for-understanding-kidney-development-function-and-disease
#1
Naveen Kumar Gautam, Puja Verma, Madhu G Tapadia
The Malpighian tubules of insects are structurally simple but functionally important organs, and their integrity is important for the normal excretory process. They are functional analogs of human kidneys which are important physiological organs as they maintain water and electrolyte balance in the blood and simultaneously help the body to get rid of waste and toxic products after various metabolic activities. In addition, it receives early indications of insults to the body such as immune challenge and other toxic components and is essential for sustaining life...
2017: Results and Problems in Cell Differentiation
https://www.readbyqxmd.com/read/28405139/regulation-of-intestinal-permeability-the-role-of-proteases
#2
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/28390725/comparison-of-a-commercially-available-oral-nutritional-supplement-and-intravenous-fluid-therapy-for-dehydration-in-dairy-calves
#3
Jared D Taylor, Merel Rodenburg, Timothy A Snider
Calf scours is a primary cause of morbidity and mortality in the dairy industry. Effective treatments are needed to minimize death, maximize welfare, and maintain growth and productivity. The objective of this trial was to compare the efficacy of a commercially available nutritional supplement (Diaque, Boehringer-Ingelheim Vetmedica Inc., St. Joseph, MO) and i.v. lactated Ringer's solution (LRS) in rehydrating, preventing acidemia, and correcting electrolyte imbalances in an experimental model for calf scours...
April 5, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28373609/nutritional-counseling-regulates-interdialytic-weight-gain-and-blood-pressure-in-outpatients-receiving-maintenance-hemodialysis
#4
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/28360221/nfat5-and-slc4a10-loci-associate-with-plasma-osmolality
#5
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
#6
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/28332116/sweating-rate-and-sweat-sodium-concentration-in-athletes-a-review-of-methodology-and-intra-interindividual-variability
#7
REVIEW
Lindsay B Baker
Athletes lose water and electrolytes as a consequence of thermoregulatory sweating during exercise and it is well known that the rate and composition of sweat loss can vary considerably within and among individuals. Many scientists and practitioners conduct sweat tests to determine sweat water and electrolyte losses of athletes during practice and competition. The information gleaned from sweat testing is often used to guide personalized fluid and electrolyte replacement recommendations for athletes; however, unstandardized methodological practices and challenging field conditions can produce inconsistent/inaccurate results...
March 2017: Sports Medicine
https://www.readbyqxmd.com/read/28303369/clinical-aspects-of-changes-in-water-and-sodium-homeostasis-in-the-elderly
#8
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/28272337/impact-of-isotonic-beverage-on-the-hydration-status-of-healthy-chinese-adults-in-air-conditioned-environment
#9
Phei Ching Siow, Wei Shuan Kimberly Tan, Christiani Jeyakumar Henry
People living in tropical climates spend much of their time in confined air-conditioned spaces, performing normal daily activities. This study investigated the effect of distilled water (W) or isotonic beverage (IB) on the hydration status in subjects living under these conditions. In a randomized crossover design, forty-nine healthy male subjects either consumed beverage or IB over a period of 8 h (8 h) in a controlled air-conditioned environment. Blood, urine, and saliva samples were collected at baseline and after 8 h...
March 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28268713/investigations-on-different-epoxies-for-electrical-insulation-of-microflex-structures
#10
P Cvancara, S Lauser, L Rudmann, T Stieglitz
The microflex interconnection (MFI) technique is often used to connect electrically and mechanically thin film ribbons or electrodes with a solid substrate like screen printed ceramics. For stabilization reasons epoxy is used to fix the MFI structure. As epoxy tends to form cracks when surrounded by water or electrolytes we are eager to find an epoxy which provides sufficient insulation between the single channels of the MFI structure also in a moist surrounding. Therefore we designed a device to investigate the insulating properties of different epoxies (Uhu Plus Endfest 300, Epo-Tek 353ND and 353ND-T) immersed in saline solution...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267585/disturbances-of-thirst-and-fluid-balance-associated-with-aging
#11
REVIEW
Denovan P Begg
During heat waves, significant mortality and morbidity occurs in elderly populations due to heat-stress and dehydration. The dehydration is primarily attributable to inadequate water intake caused by dysfunction of the central nervous system mechanisms controlling thirst. The phenomenon of a reduced thirst in response to dehydration in aging was first observed decades ago and has been examined extensively since. The reduced thirst and ingestive behavior have been reported consistently in response to hyperosmotic stimuli, hypovolemic stimuli and dehydration in both elderly humans and animal models of aging...
March 3, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28262194/protective-effect-of-propolis-in-proteinuria-crystaluria-nephrotoxicity-and-hepatotoxicity-induced-by-ethylene-glycol-ingestion
#12
Nawal El Menyiy, Noori Al Waili, Meryem Bakour, Hamza Al-Waili, Badiaa Lyoussi
BACKGROUND AND AIMS: Propolis is a natural honeybee product with wide biological activities and potential therapeutic properties. The aim of the study is to evaluate the protective effect of propolis extract on nephrotoxicity and hepatotoxicity induced by ethylene glycol in rats. METHODS: Five groups of rats were used. Group 1 received drinking water, group 2 received 0.75% ethylene-glycol in drinking water, group 3 received 0.75% ethylene-glycol in drinking water along with cystone 500 mg/kg/body weight (bw) daily, group 4 received 0...
October 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/28255797/acetate-buffered-crystalloid-infusate-versus-infusion-of-0-9-saline-and-hemodynamic-stability-in-patients-undergoing-renal-transplantation-prospective-randomized-controlled-trial
#13
Carmen Pfortmueller, Georg-Christian Funk, Eva Potura, Christian Reiterer, Florian Luf, Barbara Kabon, Wilfred Druml, Edith Fleischmann, Gregor Lindner
BACKGROUND: Infusion therapy is one of the most frequently prescribed medications in hospitalized patients. Currently used crystalloid solutes have a variable composition and may therefore influence acid-base status, intracellular and extracellular water content and plasma electrolyte compositions and have a major impact on organ function and outcome. The aim of our study was to investigate whether use of acetate-based balanced crystalloids leads to better hemodynamic stability compared to 0...
March 2, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28254387/colectomy-induces-an-aldosterone-mediated-increase-in-jejunal-glucose-uptake-in-rats
#14
Maha Khachab, Amjad Kanaan, Dania Awad, Elie Deeba, Samira Osman, Camille F Nassar
AIMS: The main function of the colon is water and electrolyte absorption. Total colectomy eliminates this colonic function and may alter the absorptive capacity of the small intestine for nutrients. This study examines the effect of total colectomy on jejunal glucose absorption and investigates the potential role of aldosterone in mediating the alterations in glucose uptake post-colectomy using the aldosterone antagonist spironolactone. MAIN METHODS: Total colectomy with ileo-rectal anastomosis was performed on anesthetized rats...
April 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/28226901/investigations-on-different-epoxies-for-electrical-insulation-of-microflex-structures
#15
P Cvancara, S Lauser, L Rudmann, T Stieglitz, P Cvancara, S Lauser, L Rudmann, T Stieglitz, P Cvancara, S Lauser, T Stieglitz, L Rudmann
The microflex interconnection (MFI) technique is often used to connect electrically and mechanically thin film ribbons or electrodes with a solid substrate like screen printed ceramics. For stabilization reasons epoxy is used to fix the MFI structure. As epoxy tends to form cracks when surrounded by water or electrolytes we are eager to find an epoxy which provides sufficient insulation between the single channels of the MFI structure also in a moist surrounding. Therefore we designed a device to investigate the insulating properties of different epoxies (Uhu Plus Endfest 300, Epo-Tek 353ND and 353ND-T) immersed in saline solution...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28222581/a-comparison-of-the-physiological-demands-imposed-by-competing-in-a-half-marathon-vs-a-marathon
#16
Juan Del Coso, Juan J Salinero, Beatriz Lara, Javier Abián-Vicén, César Gallo-Salazar, Francisco Areces
BACKGROUND: While there is widespread scientific information about the physiological challenges imposed on elite endurance runners during competitions, the information regarding the amateur population is scarce. The aim of this study was to compare the physical and physiological load imposed by competing in a real half-marathon vs a marathon race. METHODS: From a larger group of participants, we selected 22 experienced runners who were matched in pairs (11 marathoners and 11 half-marathoners) for age and anthropometric data...
February 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28167686/high-salt-diet-causes-osmotic-gradients-and-hyperosmolality-in-skin-without-affecting-interstitial-fluid-and-lymph
#17
Elham Nikpey, Tine V Karlsen, Natalia Rakova, Jens M Titze, Olav Tenstad, Helge Wiig
The common notion is that the body Na(+) is maintained within narrow limits for fluid and blood pressure homeostasis. Several studies have, however, shown that considerable amounts of Na(+) can be retained or removed from the body without commensurate water loss and that the skin can serve as a major salt reservoir. Our own data from rats have suggested that the skin is hypertonic compared with plasma on salt storage and that this also applies to skin interstitial fluid. Even small electrolyte gradients between plasma and interstitial fluid would represent strong edema-generating forces...
February 6, 2017: Hypertension
https://www.readbyqxmd.com/read/28145415/changes-in-serum-osmotic-pressure-following-haemodialysis-treatments-lead-to-changes-in-bioimpedance-spectroscopy-estimates-of-lean-and-adipose-tissue
#18
M Antonelou, S El-Kateb, N Davies, A Davenport
Haemodialysis (HD) patients are at risk of sarcopenia. Newer bioimpedance devices (BIS) using a three-compartmental body composition model, separate extracellular water overhydration from normo-hydrated lean tissue mass (LTM) and adipose tissue mass (ATM). During HD hydration status changes, along with changes in electrolytes and solutes, and may alter body composition measurements. As such, we measured BIS and serum osmotic pressure (sOP) pre- and post dialysis in 43 patients. There were no significant changes in LTM (39...
April 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28141711/an-8-year-old-boy-with-treatment-resistant-encopresis
#19
Martin T Stein, Marc A Benninga, Barbara T Felt
Paul is an 8-year-old boy with a long-standing history of encopresis and enuresis. Potty training was initiated when he was 2 years old. At this time, his mother was absent from the home for 6 weeks when she cared for her ill father in a different city. The process of teaching Paul to use the bathroom was described as "inconsistent" due to multiple caretakers.Paul never successfully mastered bowel and bladder control. He continues to wet and soil his clothes on a daily basis at home and school. According to his parents, he does not accept responsibility and comments about his soiling such as, "I didn't do it; someone else must have put it there...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28138765/low-dose-carperitide-%C3%AE-human-a-type-natriuretic-peptide-alleviates-hemoglobin-concentration-decrease-during-prolonged-oral-surgery-a-randomized-controlled-study
#20
Masanori Tsukamoto, Sayuri Koyama, Kanako Esaki, Takashi Hitosugi, Takeshi Yokoyama
PURPOSE: Surgical injury stimulates the renin-angiotensin-aldosterone system (RAAS) and causes antidiuresis, leading to postoperative oliguria. Carperitide (α-human A-type natriuretic peptide) is a cardiac peptide hormone secreted from the atrium. This peptide hormone enhances diuresis by suppressing the RAAS. In our experience, carperitide alleviates decreased hemoglobin (Hb) concentration during elective surgery. In the current study, we investigated the relationship between low-dose carperitide (0...
January 30, 2017: Journal of Anesthesia
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