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https://www.readbyqxmd.com/read/29454226/dysphagia-and-laryngeal-pathology-in-post-surgical-cardiothoracic-patients
#1
Anna Miles, Naomi McLellan, Rochelle Machan, David Vokes, Alexandra Hunting, Mary McFarlane, Jennifer Holmes, Kelly Lynn
PURPOSE: Cardiothoracic surgery is known to result in dysphagia and laryngeal injury. While prevalence has been explored, extent, trajectory and longevity of symptoms are poorly understood. This retrospective, observational study explored dysphagia and laryngeal injury in patients following cardiothoracic surgery referred for instrumental swallowing assessment. METHODS: Clinical notes and endoscopic recordings of 106 patients (age range 18-87yrs; mean 63yrs; SD 15yrs) (including 190 endoscopes) at one large tertiary centre were reviewed by two speech-language pathologists and a laryngologist...
February 9, 2018: Journal of Critical Care
https://www.readbyqxmd.com/read/29454137/mechanisms-and-management-of-refractory-ventricular-arrhythmias-in-the-age-of-autonomic-modulation
#2
Jason S Bradfield, Olujimi A Ajijola, Marmar Vaseghi, Kalyanam Shivkumar
Ventricular arrhythmias are responsible for hundreds of thousands of deaths every year. Catheter ablation of ventricular tachycardia (VT) is an essential component of the management of these life-threatening arrhythmias. However, in many patients, despite medical and interventional therapy, VT recurs. Further, some VT substrates (mid-myocardial, left ventricular summit, intra-septal) are not easily targeted, due to limitations of currently available technology. In certain clinical settings, ventricular fibrillation (VF) episodes that have premature ventricular contraction (PVC) triggers can also be targeted with catheter ablation...
February 14, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29453492/application-of-physiologically-based-pharmacokinetic-modeling-to-the-prediction-of-drug-drug-and-drug-disease-interactions-for-rivaroxaban
#3
Ruijuan Xu, Weihong Ge, Qing Jiang
PURPOSE: Rivaroxaban is a direct oral anticoagulant with a large inter-individual variability. The present study is to develop a physiologically based pharmacokinetic (PBPK) model to predict several scenarios in clinical practice. METHODS: A whole-body PBPK model for rivaroxaban, which is metabolized by the cytochrome P450 (CYP) 3A4/5, 2J2 pathways and excreted via kidneys, was developed to predict the pharmacokinetics at different doses in healthy subjects and patients with hepatic or renal dysfunction...
February 17, 2018: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29453339/a-role-for-tau-in-learning-memory-and-synaptic-plasticity
#4
Fabrizio Biundo, Dolores Del Prete, Hong Zhang, Ottavio Arancio, Luciano D'Adamio
Tau plays a pivotal role in the pathogenesis of neurodegenerative disorders: mutations in the gene encoding for tau (MAPT) are linked to Fronto-temporal Dementia (FTD) and hyper-phosphorylated aggregates of tau forming neurofibrillary tangles (NFTs) that constitute a pathological hallmark of Alzheimer disease (AD) and FTD. Accordingly, tau is a favored therapeutic target for the treatment of these diseases. Given the criticality of tau to dementia's pathogenesis and therapy, it is important to understand the physiological function of tau in the central nervous system...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452906/extracranial-arterial-wall-volume-is-increased-and-shows-relationships-with-vascular-mri-measures-in-idiopathic-parkinson-s-disease
#5
Stephen Ball, Sarah Al-Bachari, Laura M Parkes, Hedley C A Emsley, Charles N McCollum
OBJECTIVE: Idiopathic Parkinson's disease (IPD) is the second most common neurodegenerative disorder, often complicated by dementia. Cardiovascular risk factors and spontaneous cerebral emboli (SCE) are strongly associated with Alzheimer's (AD) and vascular dementia (VaD). We measured SCE in the middle cerebral artery and arterial wall volume in the extracranial arteries in patients with IPD and controls, and explored the relationships with structural and physiological MRI brain neurovascular measures...
February 10, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29452885/somatolactogens-and-diabetic-retinopathy
#6
REVIEW
Kevin Christian Bermea, Alejandro Rodríguez-García, Andrew Tsin, Hugo Alberto Barrera-Saldaña
IMPORTANCE: Diabetic retinopathy (DR) is one of the most common of all diabetic complications. The number of people with DR in the United States is expected to increase to 16 million by 2050. DR is the leading cause of blindness among working-age adults in many different countries, including the United States. In later DR stages, neovascularization is associated with extensive retinal capillary non-perfusion and vitreo-proliferation leading to retinal detachment. This neovascularization is orchestrated by an imbalance of growth factors in the retina from which somatolactogens (pituitary growth hormone, GH-N; placental growth hormone, GH-V; prolactin, PRL; and placental lactogen, PL, also referred as chorionic somatomammotropin, CSH), may play an important role...
February 6, 2018: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29452832/delayed-endovascular-aortic-repair-is-associated-with-reduced-in-hospital-mortality-in-patients-with-blunt-thoracic-aortic-injury
#7
Christina L Marcaccio, Ryan P Dumas, Yanlan Huang, Wei Yang, Grace J Wang, Daniel N Holena
OBJECTIVE: The traditional approach to stable blunt thoracic aortic injury (BTAI) endorsed by the Society for Vascular Surgery is early (<24 hours) thoracic endovascular aortic repair (TEVAR). Recently, some studies have shown improved mortality in stable BTAI patients repaired in a delayed manner (≥24 hours). However, the indications for use of delayed TEVAR for BTAI are not well characterized, and its overall impact on the patient's survival remains poorly understood. We sought to determine whether delayed TEVAR is associated with a decrease in mortality compared with early TEVAR in this population...
February 13, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29452335/change-in-cardiometabolic-risk-among-blacks-whites-and-hispanics-findings-from-the-health-and-retirement-study
#8
Uchechi A Mitchell, Jennifer A Ailshire, Eileen M Crimmins
Background: Blacks experience greater multi-system physiological dysregulation, or cumulative biological risk, which is associated with poor cardiometabolic health and mortality. In this study, we assess race differences in change in risk over four years among older whites, blacks and Hispanics. Method: We examined race differences in 4-year change in individual biomarkers and a cumulative measure of risk-cardiometabolic risk (CMR)-using data for each respondent from two waves of the Health and Retirement Study's biomarker assessment (n=5,512)...
February 14, 2018: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/29452288/repetitive-tlr-3-activation-in-the-lung-induces-skeletal-muscle-adaptations-and-cachexia
#9
Ted G Graber, Brandy L Rawls, Bing Tian, William J Durham, Camille R Brightwell, Allan R Brasier, Blake B Rasmussen, Christopher S Fry
Due to immunosenescence, older adults are particularly susceptible to lung-based viral infections, with increased severity of symptoms in those with underlying chronic lung disease. Repeated respiratory viral infections produce lung maladaptations, accelerating pulmonary dysfunction. Toll like 3 receptor (TLR3) is a membrane protein that senses exogenous double-stranded RNA to activate the innate immune response to a viral infection. Polyinosinic-polycytidylic acid [poly(I:C)] mimics double stranded RNA and has been shown to activate TLR3...
February 13, 2018: Experimental Gerontology
https://www.readbyqxmd.com/read/29452267/git2-a-keystone-in-ageing-and-age-related-disease
#10
REVIEW
Jaana van Gastel, Jan Boddaert, Areta Jushaj, Richard T Premont, Louis M Luttrell, Jonathan Janssens, Bronwen Martin, Stuart Maudsley
Since its discovery, G protein-coupled receptor kinase-interacting protein 2, GIT2, and its family member, GIT1, have received considerable interest concerning their potential key roles in regulating multiple inter-connected physiological and pathophysiological processes. GIT2 was first identified as a multifunctional protein that is recruited to G protein-coupled receptors (GPCRs) during the process of receptor internalization. Recent findings have demonstrated that perhaps one of the most important effects of GIT2 in physiology concerns its role in controlling multiple aspects of the complex ageing process...
February 13, 2018: Ageing Research Reviews
https://www.readbyqxmd.com/read/29451880/apolipoprotein-e-genotype-does-not-moderate-the-associations-of-depressive-symptoms-neuroticism-and-allostatic-load-with-cognitive-ability-and-cognitive-aging-in-the-lothian-birth-cohort-1936
#11
Zander Crook, Tom Booth, Simon R Cox, Janie Corley, Dominika Dykiert, Paul Redmond, Alison Pattie, Adele M Taylor, Sarah E Harris, John M Starr, Ian J Deary
OBJECTIVES: In this replication-and-extension study, we tested whether depressive symptoms, neuroticism, and allostatic load (multisystem physiological dysregulation) were related to lower baseline cognitive ability and greater subsequent cognitive decline in older adults, and whether these relationships were moderated by the E4 allele of the apolipoprotein E (APOE) gene. We also tested whether allostatic load mediated the relationships between neuroticism and cognitive outcomes. METHODS: We used data from the Lothian Birth Cohort 1936 (n at Waves 1-3: 1,028 [M age = 69...
2018: PloS One
https://www.readbyqxmd.com/read/29451807/coenzyme-q-10-from-bench-to-clinic-in-aging-diseases-a-translational-review
#12
Francisco M Gutierrez-Mariscal, Elena M Yubero-Serrano, Jose M Villalba, Jose Lopez-Miranda
Coenzyme Q 10 (CoQ 10 ) is a ubiquitous molecule present in all eukaryotic organisms whose principal role in the cell is related to its participation in the electron transport chain in the inner mitochondrial membrane. CoQ 10 plays a major role in the control of cell redox status, and both the amount and functionality of this molecule have been related to the regulation of reactive oxygen species generation. Numerous reports can be found discussing the implications of CoQ 10 supplementation in human studies and clinical trials related to aging...
February 16, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29451786/the-catalytic-reaction-of-nitroxides-with-peroxyl-radicals-and-its-relevance-to-their-cytoprotective-properties
#13
Markus Griesser, Ron Shah, Antonius T Van Kessel, Omkar Zilka, Evan A Haidasz, Derek A Pratt
Sterically-hindered nitroxides such as 2,2,6,6-tetramethylpiperidin-N-oxyl (TEMPO) have long been ascribed antioxidant activity that is thought to underlie their chemopreventive and anti-aging properties. However, the most commonly invoked reactions in this context - combination with an alkyl radical to give a redox inactive alkoxyamine or the catalysis of superoxide dismutation - are unlikely to be relevant under (most) physiological conditions. Herein we characterize the kinetics and mechanisms of the reactions of TEMPO, as well as an N-arylnitroxide and a N,N-diarylnitroxide, with alkylperoxyl radicals, the propagating species in lipid peroxidation...
February 16, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29451058/developmental-differences-in-stress-responding-after-repeated-underwater-trauma-exposures-in-rats
#14
Daniel E Altman, Laurence P Simmons, Chau T Vuong, Rachel M Taylor, Jason C Sousa, Sean R Marcsisin, Victor E Zottig, Nicole L T Moore
Adolescence is a distinct developmental period characterized by behavioral and physiological maturation. Rapid ongoing changes during neurodevelopment in particular present potential opportunities for stress to have lasting effects on longitudinal outcomes of behavioral and neuroendocrine function. While adult stress effects on outcomes during adulthood have been characterized, little is known about the lasting effects of adolescent repeated stressor exposure on outcomes during adolescence. We have previously reported different stress responses in adolescent rats relative to adult rats, including a blunted fear response outcome in adulthood in rats stressed during adolescence...
February 16, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29450394/update-on-retinal-vascular-caliber
#15
REVIEW
Alina Gabriela Dumitrescu, Liliana Voinea, Ioana Anca Badarau, Vanessa Andrada Paun, Marilena Schowe, Radu Ciuluvica
Retinal vessels are the only blood vessels that can be viewed directly, in vivo, repetitively and non-invasively. Retinal vessel caliber is influenced by physiological (age, sex, race, blood pressure, blood glucose, body mass index) and pathological (atherosclerosis, dyslipidemia, smoking) determinants. There are studies on large population groups that demonstrate the associations between retinal vasculature and subclinical or clinical changes in systemic diseases (hypertension, diabetes, stroke, renal or cardiac diseases)...
July 2017: Romanian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29449948/physical-activity-and-sedentary-behavior-following-pediatric-burns-a-preliminary-investigation-using-objective-activity-monitoring
#16
Moniek Akkerman, Leonora J Mouton, Laurien M Disseldorp, Anuschka S Niemeijer, Marco van Brussel, Lucas H V van der Woude, Marianne K Nieuwenhuis
Background: Adequate levels of regular physical activity (PA) are crucial for health and well-being. Pediatric burn injuries can have major physiological consequences in both the short and long term. The question is whether these consequences affect post burn PA levels. This study therefore aimed to describe PA and sedentary behavior (SB) in children and adolescents 1-5 years after burn injury. Methods: Daily PA and SB were monitored in 20 children and adolescents (12 boys and 8 girls, aged 6-17 years, with burns covering 10-37% of total body surface area, 1-5 years post burn) for 1 week using the ActiGraph GTX3+ accelerometer...
2018: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29449943/aging-like-physiological-changes-in-the-skin-of-japanese-obese-diabetic-patients
#17
Ai Ibuki, Shoko Kuriyama, Yukiko Toyosaki, Misaki Aiba, Moeko Hidaka, Yoshiko Horie, Chihiro Fujimoto, Fumiyuki Isami, Eriko Shibata, Yasuo Terauchi, Tomoko Akase
Objective: Obesity-associated diabetes causes aging-like changes to skin physiology in animal models, but there have been no clinical studies focusing on human obese diabetic patients. The purpose of this study was to examine the hypothesis that obesity-associated diabetes accelerates aging-like skin changes in Japanese people. Methods: This cross-sectional study enrolled obese-diabetes patients (body mass index ≥ 25 kg m-2) and healthy volunteers (body mass index < 25 kg m -2 ) as controls...
2018: SAGE Open Medicine
https://www.readbyqxmd.com/read/29449038/one-year-daily-changes-in-fecal-sexual-steroids-of-two-captive-female-cheetahs-acinonyx-jubatus-in-italy
#18
Valentina Vernocchi, Maria Giorgia Morselli, Massimo Faustini, Gianfranco Gabai, Laura Da Dalt, Gaia Cecilia Luvoni
The present study evaluated changes of fecal sexual steroids in two female cheetahs (Geijsha and Duchessa) in Northern Italy throughout one year. Wet feces were collected daily from two sibling animals of the same age, housed with conspecific males and managed in the same conditions, and estrogens and progestogens concentrations were analyzed by radioimmunoassay (RIA). Evidence of ovarian activity based on regular fluctuation in estrogen excretion was demonstrated in both females. None of the animals was continuously cycling, as follicular activity was interrupted by anestrous periods, during the spring and early winter...
February 2, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29447996/sleep-food-cravings-and-taste
#19
Wen Lv, Graham Findlayson, Robin Dando
OBJECTIVE: Taste is influenced by factors from our environment, psychology, and from our own physiological state. The objective of the study was to determine whether sleep influences our sense of taste or our cravings for food. METHOD: 57 healthy panelists, predominantly of college age, submitted to sleep tracking, and subsequently underwent a series of sensory tests, using basic prototypic tastants as well as real foods. Panelists were also evaluated to quantify food cravings, using both the Leeds Food Preference Questionnaire, and the Control of Eating Questionnaire...
February 12, 2018: Appetite
https://www.readbyqxmd.com/read/29447854/risk-factors-associated-complications-for-postoperative-urinary-retention-after-lumbar-surgery-for-lumbar-spinal-stenosis
#20
Joshua L Golubovsky, Haariss Ilyas, Jinxiao Chen, Joseph E Tanenbaum, Thomas E Mroz, Michael P Steinmetz
BACKGROUND CONTEXT: Postoperative Urinary Retention (POUR) is a very common post-operative complication of all surgeries (5 - 70%) that may lead to complications such as urinary tract infection (UTI), bladder over-distention, autonomic dysregulation, and increased postoperative length of stay (LOS). Within the field of spine surgery, the reported incidence of POUR is highly variable (5.6 - 38%). Lack of clear stratification of surgical level, spinal pathology, and inadequate sample size is a major limitation of available studies concerning POUR following spine surgery that may lead to inconsistency in the incidence of POUR and the ability to model its occurrence and consequences...
February 12, 2018: Spine Journal: Official Journal of the North American Spine Society
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