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https://www.readbyqxmd.com/read/29322271/responses-of-macroinvertebrate-communities-to-pesticide-application-in-irrigated-rice-fields
#1
Cristina Stenert, Íris C M F de Mello, Mateus M Pires, Débora S Knauth, Naoki Katayama, Leonardo Maltchik
The ability to recover to original states after disturbances makes macroinvertebrates useful tools for assessing the impacts of pesticides. Many studies showed that direct exposure to pesticides decreases macroinvertebrate richness and alters their composition. The main objective of this study was to assess recovery patterns in macroinvertebrate communities after pesticide application in irrigated rice fields. We analyzed short-term temporal dynamics of macroinvertebrate communities after application of the herbicides bispyribac-sodium and clomazone and the insecticide chlorantraniliprole, over the rice-growing season in southern Brazil...
January 10, 2018: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29318728/diagnosis-and-management-of-hyponatraemia-in-the-older-patient
#2
REVIEW
Michael Woodward, Peter Gonski, Mathis Grossmann, John Obeid, Ron Scholes, Duncan J Topliss
Hyponatraemia (serum sodium concentration below 135 mmol/L) is the most common electrolyte disturbance and occurs commonly in older people. The causes can be complex to diagnose and treat and many published guidelines do not focus on the issues in an older patient group. Here, we are principally concerned with diagnosis and management of euvolaemic and hypervolaemic hyponatraemia in hospitalised patients over 70 years old. We also aim to increase awareness of hyponatraemia in residential aged care facilities and the community...
January 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29297498/epithelial-hes1-maintains-gut-homeostasis-by-preventing-microbial-dysbiosis
#3
X-K Guo, J Ou, S Liang, X Zhou, X Hu
Recent advancements suggest that in addition to its roles in developmental processes, transcription repressor hairy and enhancer of split 1 (Hes1) also acts as a key regulator of inflammatory responses. A healthy gut microbiota ecology is critical for establishment of tissue homeostasis. However, the role of epithelial Hes1 in regulating intestinal microbiota ecology and intestinal homeostasis remains unexplored. Here we show that epithelial Hes1 deficiency leads to intestinal microbial dysbiosis and disturbed homeostasis...
January 3, 2018: Mucosal Immunology
https://www.readbyqxmd.com/read/29295830/treatment-of-severe-hyponatremia
#4
Richard H Sterns
Patients with severe (serum sodium ≤120 mEq/L), symptomatic hyponatremia can develop life-threatening or fatal complications from cerebral edema if treatment is inadequate and permanent neurologic disability from osmotic demyelination if treatment is excessive. Unfortunately, as is true of all electrolyte disturbances, there are no randomized trials to guide the treatment of this challenging disorder. Rather, therapeutic decisions rest on physiologic principles, animal models, observational studies, and single-patient reports...
January 2, 2018: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29285797/sodium-fluoride-disturbs-dna-methylation-of-nnat-and-declines-oocyte-quality-by-impairing-glucose-transport-in-porcine-oocytes
#5
Xiaoyan Liu, Zheng-Wen Nie, Ying-Ying Gao, Li Chen, Shu-Yuan Yin, Xia Zhang, Cuifang Hao, Yi-Liang Miao
Sodium fluoride (NaF) is used as a medicine to prevent tooth decay; however, excessive NaF could cause a pathological damage to the health. Recent studies showed that NaF impaired mouse oocyte maturation, included of abnormal spindle configuration, actin cap formation, cortical granule-free domain formation, and the following development after fertilization. However, few studies used large animals as models to study the toxicology of NaF on oocytes maturation. We proposed a hypothesis that NaF would affect the nuclear and cytoplasmic maturation of porcine oocytes and DNA methylation pattern of imprinted genes in oocytes...
December 29, 2017: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29275854/edta-treatment-for-sodium-hypochlorite-treated-dentin-recovers-disturbed-attachment-and-induces-differentiation-of-mouse-dental-papilla-cells
#6
Kentaro Hashimoto, Nobuyuki Kawashima, Shizuko Ichinose, Keisuke Nara, Sonoko Noda, Takashi Okiji
INTRODUCTION: The disturbance of cellular attachment to dentin by sodium hypochlorite (NaOCl) may hamper pulp tissue regeneration. The aims of this study were to examine the recovering effect of EDTA on the attachment/differentiation of stemlike cells and to address the mechanisms of EDTA-induced recovery under the hypothesis that attachment to the exposed dentin matrix and the subsequent activation of integrin/phosphatidylinositol 3-kinase (PI3K) signaling play a crucial role. METHODS: Mouse dental papilla (MDP) cells were cultured on bovine dentin disks treated with NaOCl (0%, 1...
December 21, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29248268/trifluoroacetic-acid-three-times-the-fluoride-three-times-the-toxicity
#7
Christie Sun, Bryan Corbett
Trifluoroacetic acid (TFAA) is a carboxylic acid, similar to acetic acid, used industrially and in laboratories. There is a paucity of data regarding exposure and the concern is that toxicity may mimic that of hydrofluoric acid (HF), causing electrolyte abnormalities, dysrhythmia, and cardiac arrest. We report a case of a 27-year-old male that presents with a dermal exposure to TFAA. His exam was remarkable for a 4% body surface area partial thickness burn to the right forearm. There were no initial electrolyte abnormalities or dysrhythmias and the patient was admitted to telemetry monitoring overnight...
December 12, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29243813/antiepileptic-drug-monotherapy-for-epilepsy-a-network-meta-analysis-of-individual-participant-data
#8
REVIEW
Sarah J Nevitt, Maria Sudell, Jennifer Weston, Catrin Tudur Smith, Anthony G Marson
BACKGROUND: Epilepsy is a common neurological condition with a worldwide prevalence of around 1%. Approximately 60% to 70% of people with epilepsy will achieve a longer-term remission from seizures, and most achieve that remission shortly after starting antiepileptic drug treatment. Most people with epilepsy are treated with a single antiepileptic drug (monotherapy) and current guidelines from the National Institute for Health and Care Excellence (NICE) in the United Kingdom for adults and children recommend carbamazepine or lamotrigine as first-line treatment for partial onset seizures and sodium valproate for generalised onset seizures; however a range of other antiepileptic drug (AED) treatments are available, and evidence is needed regarding their comparative effectiveness in order to inform treatment choices...
December 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29242247/chip-regulates-aquaporin-2-quality-control-and-body-water-homeostasis
#9
Qi Wu, Hanne B Moeller, Donté A Stevens, Rebekah Sanchez-Hodge, Gabrielle Childers, Marleen L A Kortenoeven, Lei Cheng, Lena L Rosenbaek, Carrie Rubel, Cam Patterson, Trairak Pisitkun, Jonathan C Schisler, Robert A Fenton
The importance of the kidney distal convoluted tubule (DCT) and cortical collecting duct (CCD) is highlighted by various water and electrolyte disorders that arise when the unique transport properties of these segments are disturbed. Despite this critical role, little is known about which proteins have a regulatory role in these cells and how these cells can be regulated by individual physiologic stimuli. By combining proteomics, bioinformatics, and cell biology approaches, we found that the E3 ubiquitin ligase CHIP is highly expressed throughout the collecting duct; is modulated in abundance by vasopressin; interacts with aquaporin-2 (AQP2), Hsp70, and Hsc70; and can directly ubiquitylate the water channel AQP2 in vitro shRNA knockdown of CHIP in CCD cells increased AQP2 protein t1/2 and reduced AQP2 ubiquitylation, resulting in greater levels of AQP2 and phosphorylated AQP2...
December 14, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/29220873/effect-of-sleep-on-overnight-csf-amyloid-%C3%AE-kinetics
#10
Brendan P Lucey, Terry J Hicks, Jennifer S McLeland, Cristina D Toedebusch, Jill Boyd, Donald L Elbert, Bruce W Patterson, Jack Baty, John C Morris, Vitaliy Ovod, Kwasi G Mawuenyega, Randall J Bateman
Sleep disturbances are associated with future risk of Alzheimer's disease. Disrupted sleep increases soluble amyloid-β, suggesting a mechanism for sleep disturbances to increase Alzheimer's disease risk. We tested this response in humans using indwelling lumbar catheters to serially sample cerebrospinal fluid while participants were sleep-deprived, treated with sodium oxybate, or allowed to sleep normally. All participants were infused with 13 C6 -leucine to measure amyloid-β kinetics. We found that sleep deprivation increased overnight amyloid-β-38, amyloid-β-40, and amyloid-β-42 levels by 25-30% via increased overnight amyloid-β production relative to sleeping controls...
December 8, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/29213094/sodium-fluoride-exposure-exerts-toxic-effects-on-porcine-oocyte-maturation
#11
Shuang Liang, Zheng-Wen Nie, Minghui Zhao, Ying-Jie Niu, Kyung-Tae Shin, Xiang-Shun Cui
Excessive long-term fluoride intake is associated with several health problems, including infertility. However, limited information is available on the toxic effects of fluoride exposure on the female reproductive system, especially oocyte maturation. In this study, we investigated the toxic effect of sodium fluoride (NaF) exposure on porcine oocyte maturation and its possible underlying mechanisms. Our results showed that NaF exposure during porcine oocyte maturation inhibited cumulus cell expansion and impaired polar body extrusion...
December 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29209846/micelle-mediated-transport-disturbance-providing-extracellular-strategy-for-alleviating-n-butanol-stress-on-escherichia-coli
#12
Lin-Rui Tan, Peng-Fei Xia, Qian Li, Xian-Zheng Yuan, Shu-Guang Wang
One barrier inhibiting further progress in biofuel production is the toxicity of biofuels towards their producers. It is promising to apply gene-based intracellular techniques to engineer better strains with higher organic solvent tolerance. These methods are, however, complex. In the present study, we developed a simple, manageable, and commercial extracellular prototypal strategy to alleviate n-butanol (n-BuOH) stress on Escherichia coli via a micelle-mediated transport disturbance. When the concentration of sodium dodecyl sulfate, a typical anionic surfactant, is high enough to form micelles, n-BuOH will be trapped into/onto the micelles, and the negative charge prevents the n-BuOH from approaching the cells...
December 5, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/29206071/multivariable-analysis-of-the-association-between-electrolyte-disturbances-and-mortality-in-cats
#13
Robert Goggs, Sage De Rosa, Daniel J Fletcher
Objectives Electrolyte disorders have been individually associated with mortality in small populations of cats with specific conditions, but the associations and interactions between electrolyte disturbances and outcome have not been evaluated in a large, heterogeneous population. It was hypothesized that abnormalities of sodium, chloride, potassium and calcium concentrations would be independently and proportionately associated with death from natural causes and with all-cause mortality in cats. Methods An electronic database containing 7064 electrolyte profiles was constructed to assess the association between disorders of sodium, potassium, corrected-chloride and ionized calcium concentrations with non-survival by multivariable modelling...
December 1, 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29202235/tuning-of-nanoparticle-micelle-interactions-and-resultant-phase-behavior
#14
Debes Ray, Sugam Kumar, Vinod Kumar Aswal, Joachim Kohlbrecher
The evolution of the interaction between an anionic nanoparticle and a non-ionic surfactant and their resultant phase behavior in aqueous solution in the presence of electrolyte and ionic surfactants has been studied. The mixed system of anionic silica nanoparticles (Ludox LS30) with non-ionic surfactant decaethylene glycol monododecylether (C12E10) forms a highly stable clear phase over a wide concentration range of surfactant. Small-angle neutron scattering (SANS) and dynamic light scattering (DLS) data show that the surfactant micelles adsorb on the surface of the nanoparticle, resulting in the micellar-decorated nanoparticle structures...
December 4, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29170998/introducing-topmast-the-first-double-blind-randomized-clinical-trial-specifically-dedicated-to-perioperative-maintenance-fluid-therapy-in-adults
#15
Steven Hendrickx, Karen Van Vlimmeren, Ingrid Baar, Walter Verbrugghe, Karolien Dams, Sophie Van Cromphaut, Ella Roelant, Bart Embrecht, Anouk Wittock, Pieter Mertens, Jeroen M Hendriks, Patrick Lauwers, Paul E Van Schil, Amaryllis H Van Craenenbroeck, Tim Van den Wyngaert, Philippe Jorens, Niels Van Regenmortel
BACKGROUND: Although prescribed to every patient undergoing surgery, maintenance fluid therapy is a poorly researched part of perioperative fluid therapy. The tonicity of the chosen solutions, on the other hand, could be an important cause of morbidity, with hyponatremia being a potential side effect of hypotonic solutions, where isotonic solution could lead to fluid overload. METHODS: The TOPMAST-trial is an ongoing prospective single-center double-blind randomized trial comparing an isotonic and a hypotonic maintenance fluid strategy during and after surgery in patients undergoing different types of major thoracic surgery...
November 24, 2017: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29168298/biallelic-mutations-in-nalcn-expanding-the-genotypic-and-phenotypic-spectra-of-ihprf1
#16
Toshiki Takenouchi, Mie Inaba, Tomoko Uehara, Takao Takahashi, Kenjiro Kosaki, Seiji Mizuno
Loss-of function mutations in NALCN on chromosome 13q, a sodium leak channel that maintains baseline neuronal excitability, cause infantile hypotonia with psychomotor retardation and characteristic faces 1 (IHPRF1, OMIM #615419). Here, we document two individuals with early onset hypotonia with poor feeding and intellectual disability who were compatible with a diagnosis of IHPRF1. The two patients had bi-allelic mutations in NALCN through two different genetic mechanisms: Patient 1 had bi-allelic splice site mutations, that is c...
November 23, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29166575/chemical-characterization-and-pharmacological-assessment-of-cashew-gum-extract-anacardium-occidentale-l-polysaccharide-free
#17
Daiany Priscilla Bueno da Silva, Iziara Ferreira Florentino, Lorrane Kelle da Silva Moreira, Adriane Ferreira Brito, Verônica Vale Carvalho, Géssica Adriana Vasconcelos, Boniek Gontijo Vaz, Marcus Antônio Pereira-Junior, Kátia Flávia Fernandes, Elson Alves Costa
ETHNOPHARMACOLOGICAL RELEVANCE: The cashew gum (Anacardium occidentale L.) is used in Brazilian traditional medicine in the treatment of inflammatory conditions, asthma, diabetes, and gastrointestinal disturbs. AIM OF THE STUDY: The present study was aimed the chemical characterization and the investigation of the antinociceptive and anti-inflammatory activities of cashew gum aqueous extract without the presence of polysaccharides in its composition (CGE). MATERIALS AND METHODS: The CGE was obtained after precipitation and removal of polysaccharides using acetone...
November 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29164036/a-clinical-practice-guideline-for-the-management-of-acute-spinal-cord-injury-introduction-rationale-and-scope
#18
Michael G Fehlings, Lindsay A Tetreault, Jefferson R Wilson, Brian K Kwon, Anthony S Burns, Allan R Martin, Gregory Hawryluk, James S Harrop
Acute spinal cord injury (SCI) is a traumatic event that results in disturbances to normal sensory, motor, or autonomic function and ultimately affects a patient's physical, psychological, and social well-being. The management of patients with SCI has drastically evolved over the past century as a result of increasing knowledge on injury mechanisms, disease pathophysiology, and the role of surgery. There still, however, remain controversial areas surrounding available management strategies for the treatment of SCI, including the use of corticosteroids such as methylprednisolone sodium succinate, the optimal timing of surgical intervention, the type and timing of anticoagulation prophylaxis, the role of magnetic resonance imaging, and the type and timing of rehabilitation...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29151300/the-effect-of-antidiuretic-hormone-on-urine-and-serum-electrolyte-levelsin-children-with-primary-monosymptomatic-nocturnal-enuresis
#19
(no author information available yet)
Background/aim: The data concerning the effects of desmopressin on water/electrolyte disturbances of children with primary monosymptomatic nocturnal enuresis (PMNE) are limited. In the present study we aimed to evaluate the effect and tolerability of desmopressin on blood and urine electrolytes and osmolality in PMNE.Materials and methods: Thirty-five children with PMNE between the ages of 5 and 15 participated in the study. Patients collected urine during the daytime and acknowledged the night time fluid restriction before starting to use the desmopressin tablets...
November 13, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/29137079/treatment-of-hypermyoglobinemia-after-crs-hipec-for-patients-with-peritoneal-carcinomatosis-a-retrospective-comparative-study
#20
Gang Liu, Zhong-He Ji, Yang Yu, Xin-Bao Li, Yan-Bin Zhang, Kai-Wen Peng, Yan Li
This retrospective comparative study aims to explore the time courses of serum myoglobin (Mb) changes, and summarize our experience in treating patients with hypermyoglobinemia after cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC).This study covered 60 patients with peritoneal carcinomatosis treated with CRS + HIPEC as the study group, and another 25 cancer patients treated with conventional extensive surgery without HIPEC as the control group from February to October 2016...
November 2017: Medicine (Baltimore)
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