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https://www.readbyqxmd.com/read/29452150/cerebral-blood-flow-velocity-and-autoregulation-in-paediatric-patients-following-a-global-hypoxic-ischaemic-insult
#1
Marlina E Lovett, Tensing Maa, Melissa G Chung, Nicole F O'Brien
AIM: To describe the cerebral blood flow velocity pattern and investigate cerebral autoregulation using transcranial Doppler ultrasonography (TCD) following a global hypoxic-ischaemic (HI) event in children. METHODS: This was a prospective, observational study in a quaternary-level paediatric intensive care unit. Intubated children, newborn to 17 years admitted to the PICU following HI injury (asphyxia, drowning, cardiac arrest) were eligible for inclusion. TCD was performed daily until post-injury day 8, discharge, or death, whichever occurred earliest...
February 13, 2018: Resuscitation
https://www.readbyqxmd.com/read/29451991/exogenous-ketone-salts-do-not-improve-cognitive-responses-after-a-high-intensity-exercise-protocol-in-healthy-college-aged-males
#2
Hunter S Waldman, Steven A Basham, Ffi G Price, JohnEric W Smith, Harish Chander, Adam C Knight, Ben M Krings, Matthew J McAllister
This study examined the effects of a D-ß-hydroxybutyrate (ßHB) containing beverage on cognitive and performance measures during a bout of repeated Wingates. Fifteen healthy, college-aged males (mean ± SD age: 23.1 ± 2.4 years, height: 165.4 ± 2.0 cm, mass: 81.4 ± 9.2 kg) volunteered for the present study. Trial 1 consisted of baseline measures and familiarization for the protocol. During trials 2 and 3, subjects reported to the laboratory, after a 10 h fast, and ingested 11.38 grams of ßHB or a placebo (PLA) beverage 30 min before exercise...
February 16, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29451831/high-dose-perinatal-folic-acid-supplementation-alters-insulin-sensitivity-in-sprague-dawley-rats-and-diminishes-the-expression-of-adiponectin
#3
Ayodele Olufemi Morakinyo, Titilola Aderonke Samuel, Funmileyi Olubajo Awobajo, Gabriel Olorunleke Oludare, Adekunle Mofolorunso
The possible intake of folate in excess of the recommended upper levels is a matter of critical importance. This study was conducted to investigate the effects of prenatal and postnatal high folic acid supplementation (FAS) on glucose tolerance, insulin sensitivity, lipid metabolism, and expression of adiponectin in rats. The study included 20 female rats divided into two groups: control group and FAS group (receiving high folic acid supplemented diet). Both groups of female rats were mated and pregnancy confirmed...
February 16, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29451642/damage-control-surgery-are-we-losing-control-over-indications
#4
Silvânia Klug Pimentel, Tulio Rucinski, Melina Paula DE Araújo Meskau, Guilherme Pasquini Cavassin, Nathan Harmuch Kohl
OBJECTIVE: to analyze the surgeons' subjective indications for damage control surgery, correlating with objective data about the patients' physiological state at the time the surgery was chosen. METHODS: we carried out a prospective study between January 2016 and February 2017, with 46 trauma victims who were submitted to damage control surgery. After each surgery, we applied a questionnaire to the attending surgeon, addressing the motivations for choosing the procedure...
2018: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/29451035/revisiting-the-physiological-effects-of-methylene-blue-as-a-treatment-of-cyanide-intoxication
#5
Philippe Haouzi, Maxime Gueguinou, Takashi Sonobe, Annick Judenherc-Haouzi, Nicole Tubbs, Mohamed Trebak, Joseph Cheung, Frederic Bouillaud
BACKGROUND: Although methylene blue (MB) had long been proposed to counteract the effects of cyanide (CN) intoxication, research on its mechanisms of action and efficacy has been abandoned for decades. Recent studies on the benefits of MB in post-anoxic injuries have prompted us to reexamine the relevance of this historical observation. METHODS: Our study was performed in adult male Sprague-Dawley rats and on HEK293T epithelial cells. First, the effects and toxicity of MB (0-80 mg/kg) on circulation and metabolism were established in four urethane-anesthetized rats...
February 16, 2018: Clinical Toxicology
https://www.readbyqxmd.com/read/29449156/stochastic-expression-of-lactate-dehydrogenase-a-induces-escherichia-coli-persister-formation
#6
Naoki Yamamoto, Rino Isshiki, Yuto Kawai, Daiki Tanaka, Tetsushi Sekiguchi, Shinya Matsumoto, Satoshi Tsuneda
Bacterial persisters are phenotypic variants that survive the treatment of lethal doses of growth-targeting antibiotics without mutations. Although the mechanism underlying persister formation has been studied for decades, how the persister phenotype is switched on and protects itself from antibiotics has been elusive. In this study, we focused on the lactate dehydrogenase gene (ldhA) that was upregulated in an Escherichia coli persister-enriched population. A survival rate assay using an ldhA-overexpressing strain showed that ldhA expression induced persister formation...
February 12, 2018: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/29447114/higher-d-lactate-levels-are-associated-with-higher-prevalence-of-small-dense-low-density-lipoprotein-in-obese-adolescents
#7
Reyna Rodríguez-Mortera, Claudia Luevano-Contreras, Sergio Solorio-Meza, Russell Caccavello, Yasmin Bains, Ma Eugenia Garay-Sevilla, Alejandro Gugliucci
BACKGROUND: Childhood obesity is associated with insulin resistance (IR), increased levels of small dense low-density lipoprotein (sd-LDL) as well as with augmented hepatic de novo lipogenesis, which implies increased triose phosphate fluxes that may lead to increased methylglyoxal (MG) and its catabolic end product D-lactate. We hypothesized that obese adolescents have increased D-lactate serum levels associated with high incidence of sd-LDL. METHODS: This is a cross-sectional study where the anthropometric characteristics, atherogenic dyslipidemia complex, sd-LDL (Lipoprint, Quantimetrix) and D-lactate (kinetic enzymatic analysis) were explored in 30 lean vs...
February 15, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29447016/tgf-b1-or-hypoxia-enhance-glucose-metabolism-and-lactate-production-via-hif1a-signaling-in-tendon-cells
#8
Katie J Sikes, Jun Li, Shu-Guang Gao, Quan Shen, John D Sandy, Anna Plaas, Vincent M Wang
Healthy tendons are maintained in homeostasis through controlled usage of glucose for energy and redox equilibrium. Tendon cell stress imposed by overuse injury or vascular insufficiency is accompanied by activation of wound healing pathways which facilitate an adaptive response and the restoration of homeostasis. To understand this response at the gene expression level we have studied the in vivo effects of injected TGF-β1 in a murine model of tendinopathy, as well as treatment of murine tendon explants with either TGF-β1 or hypoxia in vitro...
February 15, 2018: Connective Tissue Research
https://www.readbyqxmd.com/read/29446933/dietary-sodium-butyrate-supplementation-reduces-high-concentrate-diet-feeding-induced-apoptosis-in-mammary-cells-in-dairy-goats
#9
Guangjun Chang, Jinyu Yan, Nana Ma, Xinxin Liu, Hongyu Dai, Muhammad Shaid Bilal, Xiangzhen Shen
Eighteen lactating goats (38.86 ± 2.06 kg) were randomly allocated to three groups. One group was fed a low-concentrate (LC) diet (forage:concentrate = 6:4, LC), while the other two groups were fed a high-concentrate (HC) diet (forage:concentrate = 4:6, HC) or an HC diet supplemented with sodium butyrate (BHC) for 20 weeks. Samples of ruminal fluid, milk, hepatic blood plasma, and mammary gland tissue were prepared for the experimental analysis. The LPS concentration, caspase-3 and -8 enzymatic activity, caspase-3 and -8 mRNA expression, and NF-κB (p65), phosphorylated-p65, bax, cytochrome C, and caspase-3 protein expression were higher in the HC group than those in the LC group; however, the levels of these parameters were lower in the BHC group than those in the HC group...
February 15, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29446092/association-of-salivary-lactate-dehydrogenase-level-with-systemic-inflammation-in-a-japanese-population
#10
N Miyoshi, T Tanigawa, S Nishioka, K Maruyama, E Eguchi, K Tanaka, I Saito, K Yamazaki, Y Miyake
BACKGROUND AND OBJECTIVE: Salivary lactate dehydrogenase (LDH) was reported to be a useful parameter for the screening of periodontal disease. We performed a cross-sectional study to verify the usefulness of salivary LDH as a biomarker of periodontitis and to investigate the association of severity of periodontitis with systemic inflammation by measuring salivary LDH and serum high sensitive C-reactive protein (hs-CRP) levels in a community-based middle-aged and elderly population in Japan...
February 15, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29445877/sodium-lactate-improves-renal-microvascular-thrombosis-compared-to-sodium-bicarbonate-and-0-9-nacl-in-a-porcine-model-of-endotoxic-shock-an-experimental-randomized-open-label-controlled-study
#11
Thibault Duburcq, Arthur Durand, Antoine Tournoys, Viviane Gnemmi, Valery Gmyr, François Pattou, Mercedes Jourdain, Fabienne Tamion, Emmanuel Besnier, Sebastien Préau, Erika Parmentier-Decrucq, Daniel Mathieu, Julien Poissy, Raphaël Favory
BACKGROUND: Sodium lactate seemed to improve fluid balance and avoid fluid overload. The objective of this study was to determine if these beneficial effects can be at least partly explained by an improvement in disseminated intravascular coagulation (DIC)-associated renal microvascular thrombosis. METHODS: Ancillary work of an interventional randomized open label controlled experimental study. Fifteen female "Large White" pigs (2 months old) were challenged with intravenous infusion of E...
February 14, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29445172/rational-cell-culture-optimization-enhances-experimental-reproducibility-in-cancer-cells
#12
Marina Wright Muelas, Fernando Ortega, Rainer Breitling, Claus Bendtsen, Hans V Westerhoff
Optimization of experimental conditions is critical in ensuring robust experimental reproducibility. Through detailed metabolomic analysis we found that cell culture conditions significantly impacted on glutaminase (GLS1) sensitivity resulting in variable sensitivity and irreproducibility in data. Baseline metabolite profiling highlighted that untreated cells underwent significant changes in metabolic status. Both the extracellular levels of glutamine and lactate and the intracellular levels of multiple metabolites changed drastically during the assay...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29444356/long-chain-polyunsaturated-fatty-acids-decline-rapidly-in-milk-from-mothers-delivering-extremely-preterm-indicating-the-need-for-supplementation
#13
Anders K Nilsson, Chatarina Löfqvist, Svetlana Najm, Gunnel Hellgren, Karin Sävman, Mats X Andersson, Lois E H Smith, Ann Hellström
AIM: Our aim was perform an in-depth analysis of the composition of fatty acids in milk from mothers delivering extremely preterm babies. We investigated longitudinal changes in milk fatty acid profiles and the relationship between several types of fatty acids, including omega-3 and omega-6. METHODS: Milk samples were collected at three stages of lactation from 78 mothers who delivered at less than 28 weeks of pregnancy at the Sahlgrenska University Hospital, Gothenburg, Sweden, from April 2013 to September 2015...
February 14, 2018: Acta Paediatrica
https://www.readbyqxmd.com/read/29444250/are-elevated-serum-haemolysis-markers-a-harbinger-of-adverse-events-in-heartmate-ii-patients
#14
Rashad Zayat, Mohamed Shoaib, Mohammad Amen Khattab, Usaama Ahmad, Andreas Goetzenich, Christian Stoppe, Ann Christina Foldenauer, Ajay Moza, Heike Schnoering, Rüdiger Autschbach, Lachmandath Tewarie
OBJECTIVES: Haemolysis during left ventricular assist device support is associated with thrombosis. In this retrospective study, we analysed whether low-level haemolysis (LLH) as defined by simultaneously elevated lactate dehydrogenase (LDH) and free haemoglobin (fHb) levels had an impact on thromboembolic and bleeding events and on von Willebrand factor levels in HeartMate II patients. METHODS: After exclusion of patients with LDH >700 U/l and fHb >40 mg/dl at hospital discharge, 79 HeartMate II patients were included...
February 12, 2018: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/29444171/reduced-cognitive-function-increased-blood-brain-barrier-transport-and-inflammatory-responses-and-altered-brain-metabolites-in-ldlr-and-c57bl-6-mice-fed-a-western-diet
#15
Jennifer M Rutkowsky, Linda L Lee, Michelle Puchowicz, Mari S Golub, Douglas E Befroy, Dennis W Wilson, Steven Anderson, Gary Cline, Jason Bini, Kamil Borkowski, Trina A Knotts, John C Rutledge
Recent work suggests that diet affects brain metabolism thereby impacting cognitive function. Our objective was to determine if a western diet altered brain metabolism, increased blood-brain barrier (BBB) transport and inflammation, and induced cognitive impairment in C57BL/6 (WT) mice and low-density lipoprotein receptor null (LDLr -/-) mice, a model of hyperlipidemia and cognitive decline. We show that a western diet and LDLr -/- moderately influence cognitive processes as assessed by Y-maze and radial arm water maze...
2018: PloS One
https://www.readbyqxmd.com/read/29442224/vitamin-c-and-sodium-bicarbonate-enhance-the-antioxidant-ability-of-h9c2-cells-and-induce-hsps-to-relieve-heat-stress
#16
Bin Yin, Shu Tang, Jiarui Sun, Xiaohui Zhang, Jiao Xu, Liangjiao Di, Zhihong Li, Yurong Hu, Endong Bao
Heat stress is exacerbated by global warming and affects human and animal health, leading to heart damage caused by imbalances in reactive oxygen species (ROS) and the antioxidant system, acid-base chemistry, electrolytes and respiratory alkalosis. Vitamin C scavenges excess ROS, and sodium bicarbonate maintains acid-base and electrolyte balance, and alleviates respiratory alkalosis. Herein, we explored the ability of vitamin C alone and in combination with equimolar sodium bicarbonate (Vitamin C-Na) to stimulate endogenous antioxidants and heat shock proteins (HSPs) to relieve heat stress in H9C2 cells...
February 13, 2018: Cell Stress & Chaperones
https://www.readbyqxmd.com/read/29441175/perioperative-factors-associated-with-pressure-ulcer-development-after-major-surgery
#17
Jeong Min Kim, Hyunjeong Lee, Taehoon Ha, Sungwon Na
Background: Postoperative pressure ulcers are important indicators of perioperative care quality, and are serious and expensive complications during critical care. This study aimed to identify perioperative risk factors for postoperative pressure ulcers. Methods: This retrospective case-control study evaluated 2,498 patients who underwent major surgery. Forty-three patients developed postoperative pressure ulcers and were matched to 86 control patients based on age, sex, surgery, and comorbidities...
February 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29439360/aerobic-rehabilitation-program-for-improving-muscle-function-in-parkinson-s-disease
#18
Siria Di Martino, Caterina Tramonti, Elisa Unti, Claudia Del Gamba, Ubaldo Bonuccelli, Bruno Rossi, Roberto Ceravolo, Carmelo Chisari
BACKGROUND: Parkinson's Disease (PD) is characterized by progressive and disabling symptoms. An impaired oxidative metabolism efficiency was supposed to be involved in the systemic impairment. Rehabilitative treatment represents a valid tool in promoting skeletal muscle's adaptations, even if no solid studies on muscle metabolic features are still available. OBJECTIVE: To evaluate the efficiency of skeletal muscle oxidative metabolism in PD patients in comparison with age-matched controls and test the role of an intensive aerobic treatment on muscle oxidative metabolism and its clinical effects...
2018: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29436658/effect-of-garlic-on-rats-with-chronic-intermittent-hypoxia-combined-with-diabetes-mellitus
#19
Yinglan Peng, Ke Hu
The present study investigated the effect of garlic (G) on serum, liver, renal and cerebral parameters of rats with chronic intermittent hypoxia (CIH) combined with diabetes mellitus (DM). A total of 32 rats were divided into eight groups, with 4 rats/group. A total of three models were established, including CIH, DM and CIH‑DM, and an additional healthy control (C) group. Rats in C‑G, CIH‑G, DM‑G and CIH‑DM‑G groups were injected with a G extract daily. Serum, liver, renal and cerebral parameters were detected...
February 7, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29436603/%C3%AE-%C3%A2-lipoic-acid-can-greatly-alleviate-the-toxic-effect-of-ages-on-sh%C3%A2-sy5y-cells
#20
Guifen Niu, Jianfei Guo, Yaqiang Tian, Kexiang Zhao, Jian Li, Qian Xiao
The aim of the study was to explore the influence of α‑lipoic acid (α‑LA) on the cytotoxicity of advanced glycation end‑products (AGEs) against SH‑SY5Y cells. AGE‑bovine serum albumin (BSA) was incubated in vitro using SH‑SY5Y cells as a target model, and the control group was set. Cells were exposed to AGE‑BSA, and α‑LA was selectively added to the cells. Cell growth and death was determined by the MTT assay, which measures cellular metabolic rate, lactate dehydrogenase (LDH) leakage rate and cellular axonal length...
February 8, 2018: International Journal of Molecular Medicine
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