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https://www.readbyqxmd.com/read/28211020/goal-directed-fluid-restriction-during-brain-surgery-a-prospective-randomized-controlled-trial
#1
Jinfeng Luo, Jing Xue, Jin Liu, Bin Liu, Li Liu, Guo Chen
BACKGROUND: The value of goal-directed fluid therapy in neurosurgical patients, where brain swelling is a major concern, is unknown. The aim of our study was to evaluate the effect of an intraoperative goal-directed fluid restriction (GDFR) strategy on the postoperative outcome of high-risk patients undergoing brain surgery. METHODS: High-risk patients undergoing brain surgery were randomly assigned to a usual care group (control group) or a GDFR group. In the GDFR group, (1) fluid maintenance was restricted to 3 ml/kg/h of a crystalloid solution and (2) colloid boluses were allowed only in case of hypotension associated with a low cardiac index and a high stroke volume variation...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28207940/structural-and-functional-changes-to-lymph-nodes-in-ageing-mice
#2
Vivian M Turner, Neil A Mabbott
Lymph nodes (LN) are secondary lymphoid organs spread throughout the lymphatic system. They function to filter pathogenic material from the lymphatic fluid to maintain the health of the organism. Subcapsular sinus macrophages (SCSM) are amongst the first-responders within the LN due to their strategic location within the subcapsular sinus region. These macrophages aid the delivery of immune complexes to B cells and follicular dendritic cells (FDC) within the LN. Here we show an increase in SCSM and other macrophage populations within aged LN...
February 16, 2017: Immunology
https://www.readbyqxmd.com/read/28204813/homeostasis-and-the-concept-of-interstitial-fluids-hierarchy-relevance-of-cerebrospinal-fluid-sodium-concentrations-and-brain-temperature-control%C3%A2-review
#3
Luigi F Agnati, Manuela Marcoli, Giuseppina Leo, Guido Maura, Diego Guidolin
In this review, the aspects and further developments of the concept of homeostasis are discussed also in the perspective of their possible impact in the clinical practice, particularly as far as psychic homeostasis is concerned. A brief historical survey and comments on the concept of homeostasis and allostasis are presented to introduce our proposal that is based on the classical assumption of the interstitial fluid (ISF) as the internal medium for multicellular organisms. However, the new concept of a hierarchic role of ISF of the various organs is introduced...
February 3, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28194319/candidate-genes-that-have-facilitated-freshwater-adaptation-by-palaemonid-prawns-in-the-genus-macrobrachium-identification-and-expression-validation-in-a-model-species-m-koombooloomba
#4
Md Lifat Rahi, Shorash Amin, Peter B Mather, David A Hurwood
BACKGROUND: The endemic Australian freshwater prawn, Macrobrachium koombooloomba, provides a model for exploring genes involved with freshwater adaptation because it is one of the relatively few Macrobrachium species that can complete its entire life cycle in freshwater. METHODS: The present study was conducted to identify potential candidate genes that are likely to contribute to effective freshwater adaptation by M. koombooloomba using a transcriptomics approach...
2017: PeerJ
https://www.readbyqxmd.com/read/28191857/auricular-acupressure-helps-alleviate-xerostomia-in-maintenance-hemodialysis-patients-a-pilot-study
#5
Guowen Yang, Shaoqin Lin, Yuchi Wu, Shangpeng Zhang, Xiuqing Wu, Xusheng Liu, Chuan Zou, Qizhan Lin
BACKGROUND: Xerostomia is one of the most common complaints in maintenance hemodialysis (MHD) patients. This problem contributes to excess fluid intake and results in poor survival outcome. Based on Traditional Chinese Medicine (TCM) theory and literature studies, the authors have been practicing auricular acupressure therapy (AAT) to help patients with xerostomia. This pilot study was conducted to demonstrate the potential of AAT for xerostomia in MHD patients. METHODS: Eligible subjects who agreed to participate in this study were recruited and provided with AAT for 4 weeks...
February 13, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28188734/mixing-and-pumping-functions-of-the-intestine-of-zebrafish-larvae
#6
Jinyou Yang, Yuji Shimogonya, Takuji Ishikawa
Due to its transparency, the intestine of zebrafish larvae has been widely used in studies of gastrointestinal diseases and the microbial flora of the gut. However, transport phenomena in the intestine of zebrafish larvae have not been fully clarified. In this study, therefore, transport caused by peristaltic motion in the intestine of zebrafish larvae was investigated by numerical simulation. An anatomically realistic three-dimensional geometric model of the intestine at various times after feeding was constructed based on the experimental data of Field et al...
February 7, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28188224/lung-pericyte-like-cells-are-functional-immune-sentinel-cells
#7
Chi F Hung, Kristen L Mittelsteadt, Rena Brauer, Bonnie L McKinney, Teal S Hallstrand, William C Parks, Peter Chen, Lynn M Schnapp, W Conrad Liles, Jeremy S Duffield, William A Altemeier
Pericytes are perivascular PDGFRβ+ stromal cells required for vasculogenesis and maintenance of microvascular homeostasis in many organs. Because of their unique juxtaposition to microvascular endothelium, lung PDGFRβ+ cells are well situated to detect pro-inflammatory molecules released following epithelial injury and promote acute inflammatory responses. Thus, we hypothesized that these cells represent an unrecognized immune surveillance or injury-sentinel interstitial cell. To evaluate this hypothesis, we isolated PDGFRβ+ cells from murine lung and demonstrated that they have characteristics consistent with a pericyte population (referred to as pericyte-like cells for simplicity hereafter)...
February 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28179257/interplay-between-renal-endothelin-and-purinergic-signaling-systems
#8
Eman Y Gohar, Malgorzata Kasztan, David M Pollock
Alterations in extracellular fluid volume regulation and sodium balance may result in the development and maintenance of salt-dependent hypertension, a major risk factor for cardiovascular disease. Numerous pathways contribute to the regulation of sodium excretion and blood pressure, including endothelin and purinergic signaling. Increasing evidence suggests a link between purinergic receptor activation and endothelin production within the renal collecting duct as a means of promoting natriuresis. A better understanding of the relationship between these two systems, especially in regard to sodium homeostasis, will fill a significant knowledge gap and may provide novel antihypertensive treatment options...
February 8, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28174057/sweet-waste-extract-uptake-by-a-mosquito-vector-survival-biting-fecundity-responses-and-potential-epidemiological-significance
#9
Hamady Dieng, Tomomitsu Satho, Fatimah Abang, Nur Khairatun Khadijah Binti Meli, Idris A Ghani, Cirilo Nolasco-Hipolito, Hafijah Hakim, Fumio Miake, Abu Hassan Ahmad, Sabina Noor, Wan Fatma Zuharah, Hamdan Ahmad, Abdul Hafiz A Majid, Ronald E Morales Vargas, Noppawan P Morales, Siriluck Attrapadung, Gabriel Tonga Noweg
In nature, adult mosquitoes typically utilize nectar as their main energy source, but they can switch to other as yet unidentified sugary fluids. Contemporary lifestyles, with their associated unwillingness to consume leftovers and improper disposal of waste, have resulted in the disposal of huge amounts of waste into the environment. Such refuse often contains unfinished food items, many of which contain sugar and some of which can collect water from rain and generate juices. Despite evidence that mosquitoes can feed on sugar-rich suspensions, semi-liquids, and decaying fruits, which can be abundant in garbage sites, the impacts of sweet waste fluids on dengue vectors are unknown...
February 4, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28168444/fluid-shear-stress-induced-tgf-%C3%AE-alk5-signaling-in-renal-epithelial-cells-is-modulated-by-mek1-2
#10
Steven J Kunnen, Wouter N Leonhard, Cor Semeins, Lukas J A C Hawinkels, Christian Poelma, Peter Ten Dijke, Astrid Bakker, Beerend P Hierck, Dorien J M Peters
Renal tubular epithelial cells are exposed to mechanical forces due to fluid flow shear stress within the lumen of the nephron. These cells respond by activation of mechano-sensors located at the plasma membrane or the primary cilium, having crucial roles in maintenance of cellular homeostasis and signaling. In this paper, we applied fluid shear stress to study TGF-β signaling in renal epithelial cells with and without expression of the Pkd1-gene, encoding a mechano-sensor mutated in polycystic kidney disease...
February 6, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28161844/increased-plasma-level-of-catestatin-might-be-associated-with-poor-prognosis-in-hemodialysis-patients
#11
Huaibin Sun, Wanhua Xian, Lina Geng, Engang Li, Zhiguo Peng, Jun Tian
PURPOSE: Cardiac complication is a major cause of death in hemodialysis patients. The aim of the study was to determine the relationship between plasma catestatin level and cardiac death in those people. METHODS: A total of 330 maintenance hemodialysis patients were included. Blood samples were collected. Plasma catestatin level was detected by enzyme-linked immunosorbent assay. Fluid status of each patient was expressed by overhydration to total body weight ratio and daily diuresis...
February 4, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28159069/longitudinal-assessment-of-reprocessing-effectiveness-for-colonoscopes-and-gastroscopes-results-of-visual-inspections-biochemical-markers-and-microbial-cultures
#12
Cori L Ofstead, Harry P Wetzler, Otis L Heymann, Ellen A Johnson, John E Eiland, Michael J Shaw
BACKGROUND: Flexible endoscopes are currently reused following cleaning and high-level disinfection. Contamination has been found on endoscopes, and infections have been linked to gastrointestinal, respiratory, and urologic endoscopes. METHODS: This longitudinal study involved visual inspections with a borescope, microbial cultures, and biochemical tests for protein and adenosine triphosphate to identify endoscopes in need of further cleaning or maintenance. Three assessments were conducted over a 7-month period...
February 1, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28156637/complications-of-intrathecal-pump-therapy-in-malignancy-related-pain
#13
Egidio Del Fabbro
: 102 Background: Intrathecal pumps (ITP) are used to manage severe malignancy related pain by delivering analgesics directly into the cerebrospinal fluid, in theory allowing for a reduced opioid dose and fewer complications. Although there is literature to support efficacy in patients with cancer, including improved survival, this mode of drug delivery also carries a risk of serious complications. Reports of complications in non-malignant pain suggest the risks and mortality related to ITP may be under-appreciated and that injury and liability occur with both ITP placement and ITP maintenance...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28153658/first-trimester-alcohol-exposure-alters-placental-perfusion-and-fetal-oxygen-availability-affecting-fetal-growth-and-development-in-a-non-human-primate-model
#14
Jamie O Lo, Matthias C Schabel, Victoria H J Roberts, Xiaojie Wang, Katherine S Lewandowski, Kathleen A Grant, Antonio E Frias, Christopher D Kroenke
BACKGROUND: Prenatal alcohol exposure leads to impaired fetal growth, brain development, and stillbirth. Placental impairment likely contributes to these adverse outcomes, but the mechanisms and specific vasoactive effects of alcohol that links altered placental function to impaired fetal development remain areas of active research. OBJECTIVE: Recently, we developed magnetic resonance imaging techniques in nonhuman primates to characterize placental blood oxygenation through measurements of T2* and perfusion using dynamic contrast-enhanced magnetic resonance imaging...
January 30, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28131833/fluid-shear-stress-stimulates-mate2-k-expression-via-nrf2-pathway-activation
#15
Yasunori Fukuda, Misato Kaishima, Toshiyuki Ohnishi, Kimio Tohyama, Ikumi Chisaki, Yusuke Nakayama, Mari Ogasawara-Shimizu, Yuji Kawamata
Accurate prediction of drug-induced renal toxicity is necessary for development of safer drugs for patients. Cellular assay systems that recapitulate physiologically relevant microenvironments have been proposed for correct estimation of drug responses in the human body. However, establishment of such assay systems for accurate prediction of renal toxicity is challenging because of the lack of readily available in vitro assay systems. In this study, we investigated the cellular response to fluid shear stress, which is a characteristic of the environment in the kidney proximal tubules, using microfluidic devices...
January 25, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28131519/urine-drug-testing-results-and-paired-oral-fluid-comparison-from-patients-enrolled-in-long-term-medication-assisted-treatment-in-tennessee
#16
Katie L Miller, Brandi L Puet, Ali Roberts, Cheryl Hild, Jason Carter, David L Black
Urine drug testing is recommended for individuals receiving medication-assisted treatment. It provides objective information for practitioners to consider and may serve as a protective factor against drug-related mortality. The primary objective of our study was to describe urine drug testing results for patients undergoing long-term medication-assisted treatment (≥6months). The secondary objective was to provide further evidence to establish oral fluid as a reliable alternative to urine. All subjects (n=639) included in the study were enrolled in one of five treatment centers in the state of Tennessee, and all urine specimens were positive for either methadone or buprenorphine...
January 25, 2017: Journal of Substance Abuse Treatment
https://www.readbyqxmd.com/read/28126906/optimizing-the-restoration-and-maintenance-of-fluid-balance-after-exercise-induced-dehydration
#17
Gethin Hywel Evans, Lewis John James, Susan Margaret Shirreffs, Ronald J Maughan
Hypohydration, or a body water deficit, is a common occurrence in athletes and recreational exercisers following the completion of an exercise session. For those who will undertake a further exercise session that day, it is important to replace water losses to avoid beginning the next exercise session hypohydrated and the potential detrimental effects on performance that this may lead to. The aim of this review is to provide an overview of the research related to factors that may affect post-exercise rehydration...
January 26, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28126247/fluid-therapy-management-in-hospitalized-patients-results-from-a-cross-sectional-study
#18
Anna Brugnolli, Federica Canzan, Anita Bevilacqua, Oliva Marognolli, Giuseppe Verlato, Silvia Vincenzi, Elisa Ambrosi
PURPOSE: Intravenous (IV) fluid therapy is widely used in hospitalized patients. It has been internationally studied in surgical patients, but little attention to date has been dedicated to medical patients within the Italian context. The aims of the present study were to describe the prevalence of fluid therapy and associated factors among Italian patients admitted to medical and surgical units, describe the methods used to manage fluid therapy, and analyze the monitoring of patients by clinical staff...
January 23, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28123029/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#19
Merav Cohen, Hila Ben-Yehuda, Ziv Porat, Catarina Raposo, Siamon Gordon, Michal Schwartz
: The central nervous system (CNS) is endowed with several immune-related mechanisms that contribute to its protection and maintenance in homeostasis and under pathology. Here, we discovered an additional mechanism that controls inflammatory responses within the CNS milieu under injurious conditions, involving CD200 ligand (CD200L) expressed by newly formed endothelial cells. We observed that CD200L is constitutively expressed in the mouse healthy CNS by endothelial cells of the blood-cerebrospinal fluid barrier and of the spinal cord meninges, but not by the endothelium of the blood-spinal cord barrier...
January 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28122007/impact-of-stroke-therapy-academic-industry-roundtable-stair-guidelines-on-peri-anesthesia-care-for-rat-models-of-stroke-a-meta-analysis-comparing-the-years-2005-and-2015
#20
Aurelie Thomas, Johann Detilleux, Paul Flecknell, Charlotte Sandersen
Numerous studies using rats in stroke models have failed to translate into successful clinical trials in humans. The Stroke Therapy Academic Industry Roundtable (STAIR) has produced guidelines on the rodent stroke model for preclinical trials in order to promote the successful translation of animal to human studies. These guidelines also underline the importance of anaesthetic and monitoring techniques. The aim of this literature review is to document whether anaesthesia protocols (i.e., choice of agents, mode of ventilation, physiological support and monitoring) have been amended since the publication of the STAIR guidelines in 2009...
2017: PloS One
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