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https://www.readbyqxmd.com/read/28812582/control-of-intestinal-stem-cell-function-and-proliferation-by-mitochondrial-pyruvate-metabolism
#1
John C Schell, Dona R Wisidagama, Claire Bensard, Helong Zhao, Peng Wei, Jason Tanner, Aimee Flores, Jeffrey Mohlman, Lise K Sorensen, Christian S Earl, Kristofor A Olson, Ren Miao, T Cameron Waller, Don Delker, Priyanka Kanth, Lei Jiang, Ralph J DeBerardinis, Mary P Bronner, Dean Y Li, James E Cox, Heather R Christofk, William E Lowry, Carl S Thummel, Jared Rutter
Most differentiated cells convert glucose to pyruvate in the cytosol through glycolysis, followed by pyruvate oxidation in the mitochondria. These processes are linked by the mitochondrial pyruvate carrier (MPC), which is required for efficient mitochondrial pyruvate uptake. In contrast, proliferative cells, including many cancer and stem cells, perform glycolysis robustly but limit fractional mitochondrial pyruvate oxidation. We sought to understand the role this transition from glycolysis to pyruvate oxidation plays in stem cell maintenance and differentiation...
August 14, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28810865/cryptic-plasmodium-ovale-concurrent-with-mixed-plasmodium-falciparum-and-plasmodium-malariae-infection-in-two-children-from-central-african-republic
#2
Cynthia Bichara, Philippe Flahaut, Damien Costa, Anne-Lise Bienvenu, Stephane Picot, Gilles Gargala
BACKGROUND: Since several malaria parasite species are usually present in a particular area, co-infections with more than one species of Plasmodium are more likely to occur in humans infected in these areas. In many mixed infections, parasite densities of the cryptic species may be low and often not recognized in clinical practice. CASE PRESENTATION: Two children (3 and 6 years old) adopted recently from Central African Republic were admitted to hospital because of intermittent fever...
August 15, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28808886/assessment-of-pharmacokinetic-interactions-between-obeticholic-acid-and-caffeine-midazolam-warfarin-dextromethorphan-omeprazole-rosuvastatin-and-digoxin-in-phase-1-studies-in-healthy-subjects
#3
Jeffrey E Edwards, Lise Eliot, Andrew Parkinson, Sharon Karan, Leigh MacConell
INTRODUCTION: Obeticholic acid (OCA), a potent and selective farnesoid X receptor agonist, is indicated for the treatment of primary biliary cholangitis (PBC). We investigated the potential drug-drug interaction effect of OCA on metabolic CYP450 enzymes and drug transporters. METHODS: Five phase 1 single-center, open-label, fixed-sequence, inpatient studies were conducted in healthy adult subjects to evaluate the effect of oral daily doses of 10 or 25 mg OCA on single-dose plasma pharmacokinetics of specific probe substrates for enzymes CYP1A2 (caffeine, R-warfarin), CYP3A (midazolam, R-warfarin), CYP2C9 (S-warfarin), CYP2D6 (dextromethorphan), CYP2C19 (omeprazole), and drug transporters, BCRP/OATP1B1/OATP1B3 (rosuvastatin), and P-gp (digoxin)...
August 14, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28808234/cascaded-counter-propagating-nonlinear-interactions-in-highly-efficient-sub-%C3%A2%C2%B5m-periodically-poled-crystals
#4
Andrius Zukauskas, Anne-Lise Viotti, Charlotte Liljestrand, Valdas Pasiskevicius, Carlota Canalias
Mirrorless optical parametric oscillators (MOPOs) are very attractive parametric devices that rely on the nonlinear interaction of counter-propagating photons to inherently establish distributed feedback, without the use of external mirrors or surface coatings. These devices offer unique spectral and coherence properties that will benefit a large variety of applications ranging from spectroscopy to quantum communications. The major obstacle in exploiting their full potential is ascribed to the difficulty in engineering a nonlinear material in which the generation of counter-propagating waves can be phase matched...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28805484/disparate-phospho-smad2-levels-in-advanced-type-2-diabetes-patients-with-diabetic-nephropathy-and-early-experimental-db-db-mouse-model
#5
Lise Høj Thomsen, Morten Fog-Tonnesen, Lisbeth Nielsen Fink, Jenny Norlin, Amaya García de Vinuesa, Troels Krarup Hansen, Emile de Heer, Peter Ten Dijke, Alexander Rosendahl
Uncontrolled activation of transforming growth factor beta (TGF-β) family members is hypothesized to participate in type 2 diabetes (T2D) dependent diabetic nephropathy (DN). We evaluated and compared downstream activation of the Smad2-signaling pathway in kidney samples from T2D patients to kidneys from the T2D model of leptin receptor deficient db/db mouse. Furthermore, expression of TGF-β family members was evaluated to elucidate molecular mechanisms in the mouse model. Kidney samples from patients with advanced stages of DN showed elevated pSmad2 staining whereas db/db mouse kidneys surprisingly showed a decrease in pSmad2 in the tubular compartment...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28803054/decolorization-of-reactive-azo-dyes-using-a-sequential-chemical-and-activated-sludge-treatment
#6
Ken Meerbergen, Sam Crauwels, Kris A Willems, Raf Dewil, Jan Van Impe, Lise Appels, Bart Lievens
Textile wastewater contains high concentrations of organic substances derived from diverse dyes and auxiliary chemicals, some of which are non-biodegradable and/or toxic. Therefore, it is essential that textile wastewater is treated and that these substances are removed before being discharged into the environment. A combination of advanced oxidation processes (AOPs) to obtain partial dye degradation followed by a biological treatment has been suggested as a promising method for cost-effective decolorization of wastewater...
August 9, 2017: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/28802590/blue-mussels-mytilus-edulis-spp-as-sentinel-organisms-in-coastal-pollution-monitoring-a-review
#7
REVIEW
Jonny Beyer, Norman W Green, Steven Brooks, Ian J Allan, Anders Ruus, Tânia Gomes, Inger Lise N Bråte, Merete Schøyen
The blue mussel (Mytilus spp.) is widely used as a bioindicator for monitoring of coastal water pollution (mussel watch programs). Herein we provide a review of this study field with emphasis on: the suitability of Mytilus spp. as environmental sentinels; uptake and bioaccumulation patterns of key pollutant classes; the use of Mytilus spp. in mussel watch programs; recent trends in Norwegian mussel monitoring; environmental quality standards and background concentrations of key contaminants; pollutant effect biomarkers; confounding factors; particulate contaminants (microplastics, engineered nanomaterials); climate change; harmonization of monitoring procedures; and the use of deployed mussels (transplant caging) in pollution monitoring...
August 3, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28802063/hepatitis-b-virus-pregenomic-rna-in-hepatocellular-carcinoma-a-nosological-and-prognostic-determinant
#8
Boris Halgand, Christophe Desterke, Lise Rivière, Guillaume Fallot, Mylène Sebagh, Julien Calderaro, Paulette Bioulac-Sage, Christine Neuveut, Marie-Annick Buendia, Didier Samuel, Cyrille Féray
Hepatitis B virus (HBV) is a major cause of hepatocellular carcinoma (HCC). However, very little is known about the replication of HBV in HCC tissues. PATIENTS AND METHODS: We analysed viral and cellular parameters in HCC (T) and non-tumor liver (NT) samples from 99 HBsAg-positive, virologically suppressed patients treated by tumour resection or liver transplantation. We examined total HBV DNA and RNA as well as covalently closed circular DNA (cccDNA) and pregenomic RNA (pgRNA), which are considered as markers of active HBV replication...
August 12, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28798917/corrigendum-biomarkers-and-algorithms-for-the-diagnosis-of-vitamin-b12-deficiency
#9
Luciana Hannibal, Vegard Lysne, Anne-Lise Bjørke-Monsen, Sidney Behringer, Sarah C Grünert, Ute Spiekerkoetter, Donald W Jacobsen, Henk J Blom
[This corrects the article on p. 27 in vol. 3, PMID: 27446930.].
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28796283/flumazenil-versus-placebo-or-no-intervention-for-people-with-cirrhosis-and-hepatic-encephalopathy
#10
REVIEW
Ee Teng Goh, Mette L Andersen, Marsha Y Morgan, Lise Lotte Gluud
BACKGROUND: Hepatic encephalopathy is a common complication of cirrhosis which results in poor brain functioning. The spectrum of changes associated with hepatic encephalopathy ranges from the clinically 'indiscernible' or minimal hepatic encephalopathy to the clinically 'obvious' or overt hepatic encephalopathy. Flumazenil is a synthetic benzodiazepine antagonist with high affinity for the central benzodiazepine recognition site. Flumazenil may benefit people with hepatic encephalopathy through an indirect negative allosteric modulatory effect on gamma-aminobutyric acid receptor function...
August 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28793903/latent-class-analysis-derived-subgroups-of-low-back-pain-patients-do-they-have-prognostic-capacity
#11
Anne Molgaard Nielsen, Lise Hestbaek, Werner Vach, Peter Kent, Alice Kongsted
BACKGROUND: Heterogeneity in patients with low back pain is well recognised and different approaches to subgrouping have been proposed. One statistical technique that is increasingly being used is Latent Class Analysis as it performs subgrouping based on pattern recognition with high accuracy. Previously, we developed two novel suggestions for subgrouping patients with low back pain based on Latent Class Analysis of patient baseline characteristics (patient history and physical examination), which resulted in 7 subgroups when using a single-stage analysis, and 9 subgroups when using a two-stage approach...
August 9, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28792560/-epidemiology-of-depressive-and-anxiety-disorders-among-quebec-children-and-adolescents
#12
Geneviève Piché, Marilou Cournoyer, Lise Bergeron, Marie-Ève Clément, Nicole Smolla
Epidemiology of child and adolescent mental health is a relatively new discipline, particularly in the province of Quebec. Some work has however estimated the prevalence of the most common mental disorders among young people, such as anxiety and depression, as well as identified associated individual, family and socio-economic variables. This article has two objectives: to present a review of major epidemiological research findings in child psychiatry conducted in the province of Quebec and highlight the contribution of these findings for public health...
2017: Santé Mentale Au Québec
https://www.readbyqxmd.com/read/28781936/the-cost-effectiveness-of-population-health-checks-have-the-nhs-health-checks-been-unfairly-maligned
#13
Sebastian Hinde, Laura Bojke, Gerry Richardson, Lise Retat, Laura Webber
AIM: The English NHS currently has a policy of providing Health Checks to all 40-74 year olds. Administered in primary care, they aim to identify patients at risk of a range of diseases, including diabetes and heart disease, and facilitate care. This study is the first to use observed data on the effectiveness of the Checks to consider whether they represent a cost-effective use of limited NHS resources. SUBJECT AND METHODS: Using a publicly available evaluation tool we conducted an analysis of the Checks to establish the long-term cost and health-related outcomes of a cohort of patients...
2017: Journal of Public Health
https://www.readbyqxmd.com/read/28775117/endotoxemia-shifts-neutrophils-with-timp-free-gelatinase-b-mmp-9-from-bone-marrow-to-periphery-and-induces-systematic-upregulation-of-timp-1
#14
Jennifer Vandooren, Wannes Swinnen, Estefania Ugarte-Berzal, Lise Boon, Daphne Dorst, Erik Martens, Ghislain Opdenakker
Lipopolysaccharides or endotoxins elicit an excessive host inflammatory response and lead to life-threatening conditions such as endotoxemia and septic shock. Lipopolysaccharides trigger mobilization and stimulation of leukocytes and exaggerated production of pro-inflammatory molecules including cytokines and proteolytic enzymes. Matrix metalloproteinase-9 (MMP-9) or gelatinase B, a protease stored in the tertiary granules of polymorphonuclear leukocytes, has been implicated in such inflammatory reactions. Moreover, several studies even pinpointed MMP-9 as a potential target molecule to counter excessive inflammation in endotoxemia...
August 3, 2017: Haematologica
https://www.readbyqxmd.com/read/28774496/adrenal-c11-oxy-c21-steroids-contribute-to-the-c11-oxy-c19-steroid-pool-via-the-backdoor-pathway-in-the-biosynthesis-and-metabolism-of-21-deoxycortisol-and-21-deoxycortisone
#15
Lise Barnard, Rachelle Gent, Desmaré van Rooyen, Amanda C Swart
21-Hydroxylase deficiency presents with increased levels of cytochrome P450 21-hydroxylase substrates, progesterone and 17α-hydroxyprogesterone, which have been implicated in the production of androgens via the backdoor pathway. This study shows the biosynthesis of C11-oxy C21 steroids, 21-deoxycortisol and 21-deoxycortisone, and their metabolism by steroidogenic enzymes in the backdoor pathway yielding novel steroid metabolites: 5α-pregnan-11β,17α-diol-3,20-dione; 5α-pregnan-17α-ol-3,11,20-trione; 5α-pregnan-3α,11β,17α-triol-20-one and 5α-pregnan-3α,17α-diol-11,20-dione...
July 31, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28770459/effect-of-liraglutide-on-myocardial-glucose-uptake-and-blood-flow-in-stable-chronic-heart-failure-patients-a-double-blind-randomized-placebo-controlled-live-sub-study
#16
Roni Nielsen, Anders Jorsal, Peter Iversen, Lars Poulsen Tolbod, Kirsten Bouchelouche, Jens Sørensen, Hendrik Johannes Harms, Allan Flyvbjerg, Lise Tarnow, Caroline Kistorp, Ida Gustafsson, Hans Erik Bøtker, Henrik Wiggers
BACKGROUND: The glucagon-like peptide-1 analog liraglutide increases heart rate and may be associated with more cardiac events in chronic heart failure (CHF) patients. We studied whether this could be ascribed to effects on myocardial glucose uptake (MGU), myocardial blood flow (MBF) and MBF reserve (MFR). METHODS AND RESULTS: CHF patients with left ventricular ejection fraction ≤45% and without type 2 diabetes were randomized to liraglutide (N = 18) 1.8 mg once daily or placebo (N = 18) for 24 weeks in a double-blinded design...
August 2, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28770374/mog-antibody-related-disorders-common-features-and-uncommon-presentations
#17
Álvaro Cobo-Calvo, Anne Ruiz, Hyacintha D'Indy, Anne-Lise Poulat, Maryline Carneiro, Nicolas Philippe, Françoise Durand-Dubief, Kumaran Deiva, Sandra Vukusic, Vincent Desportes, Romain Marignier
Myelin oligodendrocyte glycoprotein antibodies (MOG-Ab) have been reported in acute demyelinating encephalomyelitis (ADEM), optic neuritis (ON), and neuromyelitis optica spectrum disorders (NMOSD) in adults and pediatrics. We aimed to delineate the common features of MOG-Ab-related disorders in children and adults, and report uncommon presentations. Twenty-seven consecutive pediatric and adult patients testing positive for MOG-Ab, with a minimum follow-up of 6 months, were included. Comprehensive epidemiological, clinical, radiological, and laboratory data were retrospectively analyzed...
August 2, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28769600/what-millennial-medical-students-say-about-flipped-learning
#18
Robin K Pettit, Lise McCoy, Marjorie Kinney
Flipped instruction is gaining popularity in medical schools, but there are unanswered questions such as the optimum amount of the curriculum to flip and whether flipped sessions should be mandatory. We were in a unique position to evaluate feedback from first-year medical students who had experienced both flipped and lecture-based courses during their first semester of medical school. A key finding was that the students preferred a variety of different learning formats over an "all or nothing" learning format...
2017: Advances in Medical Education and Practice
https://www.readbyqxmd.com/read/28768703/opposite-regulation-of-insulin-sensitivity-by-dietary-lipid-versus-carbohydrate-excess
#19
Anne-Marie Lundsgaard, Kim A Sjøberg, Louise D Høeg, Jacob Jeppesen, Andreas B Jordy, Annette K Serup, Andreas M Fritzen, Henriette Pilegaard, Lene S Myrmel, Lise Madsen, Jørgen F P Wojtaszewski, Erik A Richter, Bente Kiens
To understand the mechanisms in lipid-induced insulin resistance, a more physiologic approach is to enhance FA availability through the diet. Nine healthy men ingested two hypercaloric diets (+75 E%) for three days, enriched in unsaturated FA (78 E% fat; UNSAT) or carbohydrates (80 E% carbohydrate; CHO) as well as a eucaloric control diet (CON). Compared to CON, UNSAT reduced whole body and leg glucose disposal during a hyperinsulinemic-euglycemic clamp, while decreasing hepatic glucose production. In muscle, DAG and IMTG were increased...
August 2, 2017: Diabetes
https://www.readbyqxmd.com/read/28763739/risk-of-malignancy-on-suspicion-of-polyps-in-menopausal-women
#20
Sandra Bel, Camille Billard, Julien Godet, Victor Viviani, Cherif Akladios, Aline Host, Emilie Faller, Thomas Boisrame, Michel Hummel, Jean-Jacques Baldauf, Lise Lecointre, Olivier Garbin
Improved performances in gynaecological ultrasonography have enabled an increasing number of often asymptomatic endometrial polyps to be detected. Most of these polyps are removed surgically, as a precautionary measure, so as not to miss a case of endometrial cancer. Nonetheless, this management strategy is based solely on the sonographer's judgement and a number of these operations, which are probably of no benefit, could be avoided. In order to do so, risk factors for malignancy need to be identified. OBJECTIVE: Estimate the prevalence of lesions in menopausal patients with a pre-operative diagnosis of endometrial polyp...
July 15, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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