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https://www.readbyqxmd.com/read/28110019/cancer-cell-metabolism-and-mitochondria-nutrient-plasticity-for-tca-cycle-fueling
#1
REVIEW
Cyril Corbet, Olivier Feron
Warburg's hypothesis that cancer cells take up a lot of glucose in the presence of ambient oxygen but convert pyruvate into lactate due to impaired mitochondrial function led to the misconception that cancer cells rely on glycolysis as their major source of energy. Most recent (13)C-based metabolomic studies, including in cancer patients, indicate that cancer cells may also fully oxidize glucose. In addition to glucose-derived pyruvate, lactate, fatty acids and amino acids supply substrates to the TCA cycle to sustain mitochondrial metabolism...
January 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28109966/misconceptions-and-facts-about-aortic-stenosis
#2
REVIEW
Edgar Argulian, Stephan Windecker, Franz H Messerli
Aortic stenosis is the most common valvular heart disease leading to intervention and it is typically a disease of the elderly. Recent clinical advances have expanded the role of transcatheter aortic valve intervention in patients with severe aortic stenosis making aortic valve intervention feasible and effective even in patients at intermediate, high and prohibitive surgical risk. With the rapid advances in treatment proper diagnosis becomes crucial for a wide range of patients with aortic stenosis: from 'concordant' high-gradient aortic stenosis to 'discordant' low-gradient aortic stenosis...
January 18, 2017: American Journal of Medicine
https://www.readbyqxmd.com/read/28104234/knowledge-attitudes-and-perceptions-of-parkinson-s-disease-a-cross-sectional-survey-of-asian-patients
#3
Onanong Jitkritsadakul, Nonglak Boonrod, Roongroj Bhidayasiri
BACKGROUND: A knowledge gap about Parkinson's disease (PD) often exists amongst PD patients, the level and accuracy of which can influence their attitude and perceptions about the disease. Increased awareness of this information deficit can help physicians identify interventions that will improve patient's knowledge and perceptions about PD. OBJECTIVES: To evaluate general understanding of PD and identify knowledge gaps amongst PD patients using a validated PD knowledge questionnaire...
December 29, 2016: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28101265/prevalence-and-persistence-of-misconceptions-in-tree-thinking
#4
Tyler A Kummer, Clinton J Whipple, Jamie L Jensen
Darwin described evolution as "descent with modification." Descent, however, is not an explicit focus of most evolution instruction and often leaves deeply held misconceptions to dominate student understanding of common ancestry and species relatedness. Evolutionary trees are ways of visually depicting descent by illustrating the relationships between species and groups of species. The ability to properly interpret and use evolutionary trees has become known as "tree thinking." We used a 20-question assessment to measure misconceptions in tree thinking and compare the proportion of students who hold these misconceptions in an introductory biology course with students in two higher-level courses including a senior level biology course...
December 2016: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28101260/tracking-the-resolution-of-student-misconceptions-about-the-central-dogma-of-molecular-biology
#5
Amy G Briggs, Stephanie K Morgan, Seth K Sanderson, Molly C Schulting, Laramie J Wieseman
The goal of our study was to track changes in student understanding of the central dogma of molecular biology before and after taking a genetics course. Concept maps require the ability to synthesize new information into existing knowledge frameworks, and so the hypothesis guiding this study was that student performance on concept maps reveals specific central dogma misconceptions gained, lost, and retained by students. Students in a genetics course completed pre- and posttest concept mapping tasks using terms related to the central dogma...
December 2016: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28097976/staying-enthusiastic-after-years-in-nursing
#6
Mandy Day-Calder
Nursing teams are usually made up of a broad range of knowledge, skills and cultures. Experience only comes with time, and though we are becoming more aware of the need to respect diversity, ongoing misconceptions surrounding ageing can make working as a mature nurse challenging.
January 18, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28097902/mistreatment-of-medical-students-in-the-third-year-may-not-be-the-problem
#7
Stuart J Slavin, John T Chibnall
Mistreatment and abuse of medical students has been recognized as a significant problem in medical schools. We believe, however, that the problem of mistreatment has been viewed incorrectly. This misperception of mistreatment exists in two primary ways. First, mistreatment has tended to be viewed as a "diagnosis" of unprofessionalism of the perpetrator when it may be more appropriately viewed as a symptom with a range of possible underlying causes. The second misconception that appears to be prevalent is the belief that the link between mistreatment and student well-being, distress, and falling empathy is clear...
January 18, 2017: Medical Teacher
https://www.readbyqxmd.com/read/28097604/theory-based-explanation-as-intervention
#8
Kara Weisman, Ellen M Markman
Cogent explanations are an indispensable means of providing new information and an essential component of effective education. Beyond this, we argue that there is tremendous untapped potential in using explanations to motivate behavior change. In this article we focus on health interventions. We review four case studies that used carefully tailored explanations to address gaps and misconceptions in people's intuitive theories, providing participants with a conceptual framework for understanding how and why some recommended behavior is an effective way of achieving a health goal...
January 17, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28093703/african-american-and-caribbean-born-men-s-perceptions-of-prostate-cancer-fear-and-facilitators-for-screening-behavior-a-pilot-study
#9
Ewan K Cobran, Jori N Hall, William D Aiken
This study describes how a concurrent exploratory mixed methodology (CEMM) approach was used to investigate perceptions of prostate cancer (CaP) fear and facilitators of screening behavior in African-American (AA) and Caribbean-born (CB) black men for instrument development. A quantitative paper-based questionnaire was modified, adapted, and administered to participants from the Personal Integrative Model of Prostate Cancer Disparity Survey and the Powe Fatalism Inventory. Focus groups and individual interviews were conducted and analyzed using thematic analysis...
January 16, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28090660/intermittent-catheterization-acceptance-test-i-cat-a-tool-to-evaluate-the-global-acceptance-to-practice-clean-intermittent-self-catheterization
#10
Amandine Guinet-Lacoste, Jacques Kerdraon, Alexandra Rousseau, Philippe Gallien, Jean-Gabriel Previnaire, Brigitte Perrouin-Verbe, Gérard Amarenco
AIM: In certain cases, a patient's anxiety, fear, or misconceptions can represent significant obstacles to the learning of Clean Intermittent Self Catheterization (CISC), and little is known about these psychological barriers. The aim of the present study is thus to construct and validate an "Intermittent Catheterization Acceptance Test (I-CAT)" to evaluate the psychological acceptance of CISC. METHODS: A study was carried out in nine neuro-rehabilitation and urology departments in French university hospitals...
January 16, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28089965/increasing-patient-safety-by-closing-the-sterile-production-gap-part-2-implementation
#11
James Agalloco
Terminal sterilization is considered the preferred means for the production of sterile drug products as it affords enhanced safety for the patient as the formulation is filled into its final container, sealed and sterilized. Despite the obvious patient benefits, the use of terminal sterilization is artificially constrained by unreasonable expectations for the minimum time-temperature process to be used. The core misunderstanding with terminal sterilization is a fixation that destruction of a high population of a resistant biological indicator is required...
January 15, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28089964/increasing-patient-safety-by-closing-the-sterile-production-part-1-introduction
#12
James Agalloco
Terminal sterilization is considered the preferred means for the production of sterile drug products as it affords enhanced safety for the patient as the formulation is filled into its final container, sealed and sterilized. Despite the obvious patient benefits, the use of terminal sterilization is artificially constrained by unreasonable expectations for the minimum time-temperature process to be used. The core misunderstanding with terminal sterilization is a fixation that destruction of a high population of a resistant biological indicator is required...
January 15, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28089148/percutaneous-revascularization-of-chronic-total-occlusions-rationale-indications-techniques-and-the-cardiac-surgeon-s-point-of-view
#13
Lorenzo Azzalini, Gianluca Torregrossa, John D Puskas, Emmanouil S Brilakis, William L Lombardi, Dimitri Karmpaliotis, Sunao Nakamura, Antonio Colombo, Mauro Carlino
Chronic total occlusions (CTO) are frequently found in clinical practice, yet they are still undertreated, despite the frequent presence of clinical indications for revascularization. The presence of a CTO is a frequent cause of incomplete revascularization, which has been associated with worse long-term outcomes (including mortality), compared to complete revascularization. Such low rates of attempted revascularization can be attributed to a common misconception about the lack of benefit of CTO revascularization, combined with historically lower success rates and higher complication rates of CTO percutaneous coronary intervention...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28089139/cannabidiol-claims-and-misconceptions
#14
Ethan B Russo
Once a widely ignored phytocannabinoid, cannabidiol now attracts great therapeutic interest, especially in epilepsy and cancer. As with many rising trends, various myths and misconceptions have accompanied this heightened public interest and intrigue. This forum article examines and attempts to clarify some areas of contention.
January 11, 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/28077864/knowledge-and-perceptions-of-polio-and-polio-immunization-in-polio-high-risk-areas-of-pakistan
#15
Muhammad Atif Habib, Sajid Bashir Soofi, Noshad Ali, Imtiaz Hussain, Farhana Tabassum, Zamir Suhag, Saeed Anwar, Imran Ahmed, Zulfiqar Ahmed Bhutta
Pakistan and Afghanistan remain the only countries where polio is endemic, and Pakistan reports the most cases in the world. Although the rate is lower than in previous years, the situation remains alarming. We conducted a mixed methods study in high-risk areas of Pakistan to identify knowledge, attitudes, and practices of target populations about polio vaccine and its eradication, and to estimate coverage of routine immunization and oral polio vaccine. We surveyed 10,685 households in Karachi, 2522 in Pishin, and 2005 in Bajaur...
January 11, 2017: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28073688/state-legal-innovations-to-encourage-naloxone-dispensing
#16
Corey Davis, Derek Carr
OBJECTIVES: The opioid overdose epidemic continues to claim the lives of tens of thousands of Americans every year. Increased access to the opioid antagonist naloxone can reduce opioid-related morbidity and mortality. In this commentary, we describe several recent legal innovations designed to encourage pharmacists to ensure that naloxone is available when and where it is needed, and dispel some common misconceptions regarding potential legal risks associated with pharmacy naloxone dispensing...
January 7, 2017: Journal of the American Pharmacists Association: JAPhA
https://www.readbyqxmd.com/read/28062412/plant-genome-and-transcriptome-annotations-from-misconceptions-to-simple-solutions
#17
Marie E Bolger, Borjana Arsova, Björn Usadel
Next-generation sequencing has triggered an explosion of available genomic and transcriptomic resources in the plant sciences. Although genome and transcriptome sequencing has become orders of magnitudes cheaper and more efficient, often the functional annotation process is lagging behind. This might be hampered by the lack of a comprehensive enumeration of simple-to-use tools available to the plant researcher. In this comprehensive review, we present (i) typical ontologies to be used in the plant sciences, (ii) useful databases and resources used for functional annotation, (iii) what to expect from an annotated plant genome, (iv) an automated annotation pipeline and (v) a recipe and reference chart outlining typical steps used to annotate plant genomes/transcriptomes using publicly available resources...
January 5, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/28059776/ab-initio-study-of-hydrogenic-effective-mass-impurities-in-si-nanowires
#18
Hartwin Peelaers, Engin Durgun, Bart Partoens, Daniel Bilc, Philippe Ghosez, Chris Van de Walle, Francois Peeters
The effect of B and P dopants on the band structure of Si nanowires is studied using electronic structure calculations based on density functional theory. At low concentrations a dispersionless band is formed, clearly distinguishable from the valence and conduction bands. Although this band is evidently induced by the dopant impurity, it turns out to have purely Si character. These results can be rigorously analyzed in the framework of effective mass theory. In the process we resolve some common misconceptions about the physics of hydrogenic shallow impurities, which can be more clearly elucidated in the case of nanowires than would be possible for bulk Si...
January 6, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28056643/factors-influencing-contraceptive-use-in-sub-saharan-africa-a-systematic-review
#19
Sarah R Blackstone, Ucheoma Nwaozuru, Juliet Iwelunmor
The purpose of this study was to systematically review the literature regarding factors influencing contraceptive use in sub-Saharan Africa between 2005 and 2015. A total of 58 studies from twelve Sub-Saharan African countries were reviewed. Keywords were grouped using the PEN-3 cultural model. Negative factors prohibiting or reducing contraceptive use were women's misconceptions of contraceptive side-effects, male partner disapproval, and social/cultural norms surrounding fertility. Positive factors included education, employment, and communication with male partner...
January 1, 2017: International Quarterly of Community Health Education
https://www.readbyqxmd.com/read/28053201/evidence-that-supports-the-prescription-of-low-carbohydrate-high-fat-diets-a-narrative-review
#20
Timothy David Noakes, Johann Windt
Low-carbohydrate high-fat (LCHF) diets are a highly contentious current topic in nutrition. This narrative review aims to provide clinicians with a broad overview of the effects of LCHF diets on body weight, glycaemic control and cardiovascular risk factors while addressing some common concerns and misconceptions. Blood total cholesterol and LDL-cholesterol concentrations show a variable, highly individual response to LCHF diets, and should be monitored in patients adhering to this diet. In contrast, available evidence from clinical and preclinical studies indicates that LCHF diets consistently improve all other markers of cardiovascular risk-lowering elevated blood glucose, insulin, triglyceride, ApoB and saturated fat (especially palmitoleic acid) concentrations, reducing small dense LDL particle numbers, glycated haemoglobin (HbA1c) levels, blood pressure and body weight while increasing low HDL-cholesterol concentrations and reversing non-alcoholic fatty liver disease (NAFLD)...
January 2017: British Journal of Sports Medicine
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