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lactate acidosis

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https://www.readbyqxmd.com/read/27920873/migratory-stroke-like-lesions-in-a-case-of-adult-onset-mitochondrial-encephalomyopathy-lactic-acidosis-and-stroke-like-episodes-melas-syndrome-and-a-review-of-imaging-findings
#1
Stephen S Cai, Rainer von Coelln, Theresa J Kouo
Imaging findings of adult-onset mitochondrial encephalomyopathy, lactic acidosis, and stroke-like episodes (MELAS) syndrome is poorly documented. The authors present a 48-year-old woman with subacute onset of word-finding difficulties and right arm stiffness. Magnetic resonance imaging performed 2 weeks prior revealed left temporal lobe diffusion and fluid-attenuated inversion recovery hyperintensity predominantly involving the cortex. The apparent diffusion coefficient map showed preserved signal in the temporal cortex...
December 2016: Radiology case reports
https://www.readbyqxmd.com/read/27918679/movement-patterns-and-metabolic-responses-during-an-international-rugby-sevens-tournament
#2
Anthony Couderc, Claire Thomas, Mathieu Lacome, Julien Piscione, Julien Robineau, Rémi Delfour-Peyrethon, Rachel Borne, Christine Hanon
PURPOSE: This study investigated the running-demands and associated metabolic perturbations during an official rugby sevens tournament. METHODS: Twelve elite players participated in seven matches wearing Global Positioning System units. Maximal sprinting speed (MSS) and maximal aerobic speed (MAS) were measured. High-intensity threshold was individualized relative to MAS (>100% of MAS) and very high-intensity distance were reported relative to both MAS and MSS...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27917773/mutations-of-mtdna-polymerase-%C3%AE-and-hyperlactataemia-in-the-hiv-infected-zulu-population-of-south-africa
#3
D B A Ojwach, C Aldous, P Kochleff, B Sartorius
BACKGROUND: Mitochondrial toxicity, particularly symptomatic hyperlactataemia or lactic acidosis (SHL/LA), has been attributed to the use of nucleoside reverse transcriptase inhibitors (NRTIs), possibly because of their capacity to impede human mitochondrial DNA polymerase-γ (POLG), which is responsible for the replication of mitochondrial DNA. OBJECTIVE: To determine whether known monogenic POLG1 polymorphisms could be linked with the unexpectedly high incidence of SHL/LA observed in HIV-infected Zulu-speaking patients exposed to the NRTIs stavudine or zidovudine in their antiretroviral therapy...
December 1, 2016: South African Medical Journal, Suid-Afrikaanse Tydskrif Vir Geneeskunde
https://www.readbyqxmd.com/read/27914760/update-clinical-use-of-plasma-lactate
#4
REVIEW
Íde Gillespie, Patricia G Rosenstein, Dez Hughes
Lactate is an essential, versatile metabolic fuel in cellular bioenergetics. In human emergency and critical care, lactate is used as a biomarker and therapeutic endpoint and evidence is growing in veterinary medicine supporting its clinical utility. Lactate production is a protective response providing ongoing cellular energy during tissue hypoperfusion or hypoxia and mitigating acidosis. Hence, hyperlactatemia is closely associated with disease severity but it is an epiphenomenon as the body attempts to protect itself...
November 30, 2016: Veterinary Clinics of North America. Small Animal Practice
https://www.readbyqxmd.com/read/27904044/investigation-of-risk-factors-affecting-lactate-levels-in-japanese-patients-treated-with-metformin
#5
Shota Yokoyama, Hideyuki Tsuji, Sachiko Hiraoka, Masayuki Nishihara
Metformin is a biguanaide antidiabetic drug used worldwide, and its effectiveness and benefits have already been established. However, the safety of high doses of metformin in Japanese patients, especially in elderly patients with a decreased renal function, remains unclear. Among the side effects of metformin, lactate acidosis is the most problematic due to a high mortality rate. Therefore, we assessed plasma lactate levels in metformin-treated patients to identify independent risk factors for hyperlactemia...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27884339/dose-dependent-mortality-and-organ-injury-in-a-cecal-slurry-peritonitis-model
#6
Min Ji Lee, Kyuseok Kim, You Hwan Jo, Jae Hyuk Lee, Ji Eun Hwang
BACKGROUND: The cecal slurry model was introduced as an alternative method for creating an animal sepsis model. This study was performed to evaluate dose-dependent mortality and organ injury in a sepsis model of cecal slurry peritonitis. MATERIALS AND METHODS: Male Sprague-Dawley rats were divided into 5.0, 7.5, 10, or 15 mL/kg groups, according to the volume of cecal slurry administered into the peritoneal cavity. In the survival study, rats were observed for 14 d after sepsis induction...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27875839/severe-metabolic-acidosis-and-hepatopathy-due-to-leukoencephalopathy-with-thalamus-and-brainstem-involvement-and-high-lactate
#7
Elizabeth A Sellars, Tonya Balmakund, Katherine Bosanko, Brandi L Nichols, Stephen G Kahler, Yuri A Zarate
Leukoencephalopathy with thalamus and brainstem involvement and high lactate (LTBL) is a recently described autosomal recessive mitochondrial disease characterized by early onset of neurological symptoms, a biphasic clinical course, and distinctive neuroimaging. Pathogenic variants in the EARS2 gene that encode for mitochondrial glutamyl-tRNA synthetase are responsible for LTBL. Here, we describe the clinical course of an infant diagnosed with an acute crisis of LTBL and severe liver disease. This article illustrates the utility of blood lactate quantification in addition to basic metabolic testing and brain imaging in a child with low tone and poor growth...
November 22, 2016: Neuropediatrics
https://www.readbyqxmd.com/read/27871516/pediatric-patients-on-ketogenic-diet-undergoing-general-anesthesia-a-medical-record-review
#8
Elif Soysal, Heike Gries, Carter Wray
STUDY OBJECTIVE: To identify guidelines for anesthesia management and determine whether general anesthesia is safe for pediatric patients on ketogenic diet (KD). DESIGN: Retrospective medical record review. SETTING: Postoperative recovery area. PATIENTS: All pediatric patients who underwent general anesthesia while on KD between 2009 and 2014 were reviewed. We identified 24 patients who underwent a total of 33 procedures...
December 2016: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/27869558/polynitroxylated-pegylated-hemoglobin-a-novel-small-volume-therapeutic-for-traumatic-brain-injury-resuscitation-comparison-to-whole-blood-and-dose-response-evaluation
#9
Erik C Brockman, Travis C Jackson, C Edward Dixon, Hulya Bayir, Robert Clark, Vincent A Vagni, Keri L Janesko, Catherine Byrd, Li Ma, Carleton J C Hsia, Patrick M Kochanek
: Resuscitation with polynitroxylated pegylated hemoglobin (PNPH), a PEGylated bovine hemoglobin decorated with nitroxides, eliminated the need for fluid administration, reduced ICP and brain edema, and produced neuroprotection in vitro and in vivo vs. lactated Ringer's (LR) in experimental traumatic brain injury (TBI) plus hemorrhagic shock (HS). HYPOTHESIS: Resuscitation with PNPH will improve acute physiology vs. whole blood after TBI+HS and will be safe and effective across a wide dosage range...
November 21, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27865500/lipopolysaccharide-derived-from-the-digestive-tract-provokes-oxidative-stress-in-the-liver-of-dairy-cows-fed-a-high-grain-diet
#10
J A Abaker, T L Xu, D Jin, G J Chang, K Zhang, X Z Shen
The aims of this study were to measure oxidative stress parameters and to investigate the molecular mechanism triggered by grain-induced subacute ruminal acidosis in mid-lactation cows. Twelve Holstein-Friesian cows with an average weight of 455 ± 28 kg were divided into 2 groups and subjected to 2 diets over 18 wk: either a low-grain (forage-to-concentrate ratio = 6:4) or a high-grain (forage-to-concentrate ratio = 4:6) diet based on dry matter. Being fed a long-term high-grain diet resulted in a significant decrease in rumen pH and a significant increase in ruminal lipopolysaccharide (LPS) at 4 h postfeeding in the morning...
November 16, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27861334/lactic-acidosis-and-the-relationship-with-metformin-usage-case-reports
#11
Weiyi Huang, Ronald L Castelino, Gregory M Peterson
AIMS: The principal objective of this study was to retrospectively review a series of cases of lactic acidosis (LA) in patients with type 2 diabetes mellitus (T2DM) and examine the relationship with the use of metformin. More generally, the study enabled an investigation of the profiles of patients diagnosed with LA and clinical variables associated with in-hospital mortality. METHODS: All patients admitted to the Royal Hobart Hospital in Tasmania with LA (lactate >5...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27848268/use-of-intravenous-fluids-solutions-a-narrative-review
#12
N El Gkotmi, C Kosmeri, T D Filippatos, M S Elisaf
OBJECTIVE: Intravenous fluids are broadly categorized into colloids and crystalloids. The aim of this review is to present under a clinical point of view the characteristics of intravenous fluids that make them more or less appropriate either for maintaining hydration when enteral intake is contraindicated or for treating hypovolemia. METHODS: We considered randomized trials and meta-analyses as well as narrative reviews evaluating the effects of colloids or crystalloids in patients with hypovolemia or as maintenance fluids published in PubMed and Cochrane databases...
November 16, 2016: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/27847739/epinephrine-induced-lactic-acidosis-in-orthognathic-surgery-a-report-of-two-cases
#13
Hee-Won Son, Se-Hun Park, Hyun-Oh Cho, Yong-Joon Shin, Jang-Ho Son
Submucosal infiltration and the topical application of epinephrine as a vasoconstrictor produce excellent hemostasis during surgery. The hemodynamic effects of epinephrine have been documented in numerous studies. However, its metabolic effects (especially during surgery) have been seldom recognized clinically. We report two cases of significant metabolic effects (including lactic acidosis and hyperglycemia) as well as hemodynamic effects in healthy patients undergoing orthognathic surgery with general anesthesia...
October 2016: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/27847651/ethylene-glycol-poisoning-an-unusual-cause-of-altered-mental-status-and-the-lessons-learned-from-management-of-the-disease-in-the-acute-setting
#14
R Singh, E Arain, A Buth, J Kado, A Soubani, N Imran
Ethylene glycol is found in many household products and is a common toxic ingestion. Acute ingestions present with altered sensorium and an osmolal gap. The true toxicity of ethylene glycol is mediated by its metabolites, which are responsible for the increased anion gap metabolic acidosis, renal tubular damage, and crystalluria seen later in ingestions. Early intervention is key; however, diagnosis is often delayed, especially in elderly patients presenting with altered mental status. There are several laboratory tests which can be exploited for the diagnosis, quantification of ingestion, and monitoring of treatment, including the lactate and osmolal gaps...
2016: Case Reports in Critical Care
https://www.readbyqxmd.com/read/27827430/lactate-is-a-potent-inhibitor-of-the-capsaicin-receptor-trpv1
#15
Jeanne de la Roche, Isabella Walther, Waleria Leonow, Axel Hage, Mirjam Eberhardt, Martin Fischer, Peter W Reeh, Susanne Sauer, Andreas Leffler
Tissue ischemia results in an accumulation of lactate and local or systemic lactic acidosis. In nociceptive sensory neurons, lactate was reported to sensitize or activate the transient receptor potential ion channel TRPA1 and acid-sensing ion channels (ASICs). However, it is unclear how lactate modulates the TRPV1 regarded as the main sensor for acidosis in sensory neurons. In this study we investigated the effects of lactate (LA) on recombinant and native TRPV1 channels and on TRPV1-mediated release of neuropeptides from mouse nerves...
November 9, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27824275/potential-influence-of-dairy-propionibacteria-on-the-growth-and-acid-metabolism-of-streptococcus-bovis-and-megasphaera-elsdenii
#16
J Luo, C S Ranadheera, S King, C A Evans, S K Baines
Ruminal acidosis is a prevalent disorder among dairy cows and feedlot cattle, which can significantly impair their health and productivity. This study, involving seven different strains of dairy propionibacteria, represents an in vitro investigation of the feasibility of using these organisms as direct-fed microbials to control lactic acid acumulation in the rumen. Interactions between the propionibacteria, Streptococcus bovis and Megasphaera elsdenii were evaluated in terms of effects on lactic, acetic and propionic acid metabolism, following co-incubation...
November 8, 2016: Beneficial Microbes
https://www.readbyqxmd.com/read/27815579/extracorporeal-membrane-oxygenation-improves-coagulopathy-in-an-experimental-traumatic-hemorrhagic-model
#17
M Larsson, P Forsman, P Hedenqvist, A Östlund, J Hultman, A Wikman, L Riddez, B Frenckner, M Bottai, C-M Wahlgren
PURPOSE: Hemorrhage is the most common cause of preventable death after trauma. Coagulopathy plays a central role in uncontrolled bleeding and is caused by multiple factors. Extracorporeal Membrane Oxygenation (ECMO) is an established treatment for patients with respiratory failure and has in recent years also been used in severely injured trauma patients with cardiopulmonary failure and coexisting bleeding shock. The aim of this study was to evaluate the effect of ECMO on hypothermia, acidosis, and coagulopathy in a traumatic hemorrhagic rabbit model...
November 4, 2016: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/27814710/methemoglobin-and-nitric-oxide-therapy-in-ugandan-children-hospitalized-for-febrile-illness-results-from-a-prospective-cohort-study-and-randomized-double-blind-placebo-controlled-trial
#18
Andrea L Conroy, Michael Hawkes, Kyla Hayford, Laura Hermann, Chloe R McDonald, Suparna Sharma, Sophie Namasopo, Robert O Opoka, Chandy C John, W Conrad Liles, Christopher Miller, Kevin C Kain
BACKGROUND: Exposure of red blood cells to oxidants increases production of methemoglobin (MHb) resulting in impaired oxygen delivery to tissues. There are no reliable estimates of methemoglobinemia in low resource clinical settings. Our objectives were to: i) evaluate risk factors for methemoglobinemia in Ugandan children hospitalized with fever (study 1); and ii) investigate MHb responses in critically ill Ugandan children with severe malaria treated with inhaled nitric oxide (iNO), an oxidant that induces MHb in a dose-dependent manner (study 2)...
November 4, 2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27805990/improving-mortality-in-trauma-laparotomy-through-the-evolution-of-damage-control-resuscitation-analysis-of-1-030-consecutive-trauma-laparotomies
#19
Bellal Joseph, Asad Azim, Bardiya Zangbar, Zachary M Bauman, Terence O'Keeffe, Kareem Ibraheem, Narong Kulvatunyou, Andrew Tang, Rifat Latifi, Peter Rhee
BACKGROUND: The aim of this study was to evaluate the related change in outcomes (mortality, complications) in patients undergoing trauma laparotomy (TL) with implementation of damage control resuscitation (DCR). We hypothesized that implementation of DCR in patients undergoing TL is associated with better outcomes. METHODS: We analyzed 1030 consecutive patients with TL. Patients were stratified into 3 phases: Pre-DCR (2006-2007), transient (2008-2009), and post-DCR (2010-2013)...
October 31, 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27789806/the-frequency-and-severity-of-metabolic-acidosis-related-to-topiramate
#20
Hatice Türe, Özgül Keskin, Ülkem Çakır, Canan Aykut Bingöl, Uğur Türe
OBJECTIVE: We planned a cross-sectional analysis to determine the frequency and severity of metabolic acidosis in patients taking topiramate while awaiting craniotomy. METHODS: Eighty patients (18 - 65 years) taking topiramate to control seizures while awaiting elective craniotomy were enrolled. Any signs of metabolic acidosis or topiramate-related side effects were investigated. Blood chemistry levels and arterial blood gases, including lactate, were obtained. The severity of metabolic acidosis was defined according to base excess levels as mild or moderate...
October 26, 2016: Journal of International Medical Research
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