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https://www.readbyqxmd.com/read/28109165/melatonin-and-sirtuins-a-not-so-unexpected-relationship
#1
Juan C Mayo, Rosa M Sainz, Pedro González Menéndez, Vanesa Cepas, Dun-Xian Tan, Russel J Reiter
Epigenetic modifications, including methylation or acetylation as well as posttranscriptional modifications are mechanisms used by eukaryotic cells to increase the genome diversity in terms of differential gene expression and protein diversity. Among these modifying enzymes, sirtuins, a class III histone deacetylase (HDAC) enzymes are of particular importance. Sirtuins regulate the cell cycle, DNA repair, cell survival and apoptosis, thus having important roles in normal and cancer cells. Sirtuins can also regulate metabolic pathways by changing preference for glycolysis under aerobic conditions as well as glutaminolysis...
January 21, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/28108955/-unforgettable-a-pictorial-essay-on-anatomy-and-pathology-of-the-hippocampus
#2
REVIEW
Sven Dekeyzer, Isabelle De Kock, Omid Nikoubashman, Stephanie Vanden Bossche, Ruth Van Eetvelde, Jeroen De Groote, Marjan Acou, Martin Wiesmann, Karel Deblaere, Eric Achten
: The hippocampus is a small but complex anatomical structure that plays an important role in spatial and episodic memory. The hippocampus can be affected by a wide range of congenital variants and degenerative, inflammatory, vascular, tumoral and toxic-metabolic pathologies. Magnetic resonance imaging is the preferred imaging technique for evaluating the hippocampus. The main indications requiring tailored imaging sequences of the hippocampus are medically refractory epilepsy and dementia...
January 20, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28108321/virtual-reality-conditioned-place-preference-using-monetary-reward
#3
Emma Childs, Robert S Astur, Harriet de Wit
Computerized tasks based on conditioned place preference (CPP) methodology offer the opportunity to study learning mechanisms involved in conditioned reward in humans. In this study, we examined acquisition and extinction of a CPP for virtual environments associated with monetary reward ($). Healthy men and women (N=57) completed a computerized CPP task in which they controlled an avatar within a virtual environment. On day 1, subjects completed 6 conditioning trials in which one room was paired with high $ and another with low $...
January 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28107381/in-vivo-two-photon-imaging-of-astrocytes-in-gfap-gfp-transgenic-mice
#4
Dongjun Guo, Jia Zou, Nicholas Rensing, Michael Wong
Astrocytes play important roles in normal brain function and neurological diseases. In vivo two-photon excitation laser scanning microscopy has the potential to reveal rapid, dynamic structural changes in cells in a variety of physiological and pathological conditions. The type of in vivo imaging method has been shown to affect the plasticity of dendritic spines of neurons, but the optimal in vivo imaging methods of astrocytes have not been established. We compared open-skull and thinned-skull imaging methods for two-photon laser microscopy of live astrocytes in neocortex of GFAP-GFP transgenic mice...
2017: PloS One
https://www.readbyqxmd.com/read/28106982/a-novel-iron-ii-preferring-dopamine-agonist-chelator-as-potential-symptomatic-and-neuroprotective-therapeutic-agent-for-parkinson-s-disease
#5
Banibrata Das, Ashoka Kandegedara, Liping Xu, Tamara Antonio, Timothy L Stemmler, Maarten E A Reith, Aloke K Dutta
Parkinson's disease (PD) is a progressive neurodegenerative disorder and development of disease-modifying treatment is still an unmet medical need. Considering the implication of free iron (II) in PD, we report here the design and characterization of a novel hybrid iron chelator, (-)-12 (D-607) as a multitarget-directed ligand against PD. Binding and functional assays at dopamine D2/D3 receptors indicate potent agonist activity of (-)-12. The molecule displayed an efficient preferential iron (II) chelation properties along with potent in vivo activity in a reserpinized PD animal model...
January 20, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28106249/targeted-forcing-improves-quality-nutritional-and-health-value-of-sweet-cherry-fruit
#6
Verena Overbeck, Michaela Schmitz, Michael Blanke
BACKGROUND: Trade and consumers alike require premium quality cherries with high nutritional and health values preferably of local origin. While early fruit imports cannot supply such fruit, a new technology of forcing cherry emerged for an early local supply by covering the crop in spring. In the apparent scarcity of data on the resulting fruit quality, fruit characteristics of forced cherries were compared with those without cover RESULTS: Size and weight of forced cherry fruit were successfully increased by 6-14%...
January 20, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28106018/cardioneuroablation-in-the-treatment-of-neurally-mediated-reflex-syncope-a-review-of-the-current-literature
#7
Tolga Aksu, Tümer Erdem Güler, Serdar Bozyel, Kazım Serhan Özcan, Kıvanç Yalın, Ferit Onur Mutluer
OBJECTIVE: An imbalance between parasympathetic and sympathetic tone is a main cause of neurally mediated reflex syncope (NMRS). These patients may be very symptomatic and the condition may require cardiac pacemaker implantation. Cardioneuroablation (CNA) is a relatively novel technique based on radiofrequency ablation of vagal ganglia that can be used in treatment of NMRS. The aim of this analysis was to compare potential role of CNA in patients with NMRS. METHODS: In accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Statement, literature search was conducted using the keywords "cardioneuroablation," "vagal denervation," "reflex syncope," "vagal ablation," and "ganglionic plexi ablation...
December 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28105880/nursing-home-care-quality-a-cluster-analysis
#8
Vigdis Abrahamsen Grøndahl, Liv Berit Fagerli
Purpose The purpose of this paper is to explore potential differences in how nursing home residents rate care quality and to explore cluster characteristics. Design/methodology/approach A cross-sectional design was used, with one questionnaire including questions from quality from patients' perspective and Big Five personality traits, together with questions related to socio-demographic aspects and health condition. Residents ( n=103) from four Norwegian nursing homes participated (74.1 per cent response rate)...
February 13, 2017: International Journal of Health Care Quality Assurance
https://www.readbyqxmd.com/read/28105211/diagnostic-and-therapeutic-approaches-to-multiple-myeloma-patients-real-world-data-from-representative-multicentre-treatment-surveys-in-germany-between-2008-and-2011
#9
Thomas M Moehler, Maximilian Merz, Lenka Kellermann, Hartmut Goldschmidt, Wolfgang Knauf
A survey was conducted to investigate the standard of care for multiple myeloma in Germany, in order to clarify the status of implementation of international and national treatment guidelines. In addition, the changes in disease management over time were investigated by comparison with surveys conducted in 2008 and 2009. The survey captured a representative sample of 478 myeloma patients with a mean age of 67.9 years across various stages of the disease. Diagnostic approaches, prognostic aspects and treatment decisions were evaluated based on a survey conducted in 2011 in 58 representative centres in Germany, including university and non-university hospitals and office-based haematologists...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104473/hyperlipidaemia-alone-and-in-combination-with-acidosis-can-increase-the-incidence-and-severity-of-statin-induced-myotoxicity
#10
Dhiaa A Taha, Atheer Zgair, Jong Bong Lee, Cornelia H de Moor, David A Barrett, Kimberley D Bruce, Mitchell Sungelo, Robert H Eckel, Pavel Gershkovich
The association of lipophilic statins with plasma lipoproteins in the presence of disturbed acid-base balance can modify the pharmacokinetics and tissue distribution of these drugs, resulting in alteration in their efficacy and toxicity profiles. The purpose of this study is to elucidate the role of hyperlipidaemia alone or in combination with acidosis/alkalosis in the development and potentiation of statin-induced myotoxicity. Statins association with plasma lipoproteins was examined under conditions of physiological and altered pH levels...
January 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28103939/physician-migration-at-its-roots-a-study-on-the-emigration-preferences-and-plans-among-medical-students-in-romania
#11
Şoimita Mihaela Suciu, Codruta Alina Popescu, Mugur Daniel Ciumageanu, Anca Dana Buzoianu
BACKGROUND: Migration of healthcare workers is receiving increased attention worldwide. In Europe, the creation of a border-free labor market and its expansion with the EU enlargements of 2004, 2007, and 2013 endowed health professionals with the right to provide services and to relocate to another EU Member State. For the Romanian doctors, the EU-wide recognition of the medical degree obtained in Romania has created new opportunities, while inadequate working conditions and relatively low salaries pushed many of them to search for employment abroad...
January 19, 2017: Human Resources for Health
https://www.readbyqxmd.com/read/28101669/outcomes-and-trends-of-peripartum-maternal-admission-to-the-intensive-care-unit
#12
Alex Farr, Agnes Lenz-Gebhart, Sabrina Einig, Clemens Ortner, Iris Holzer, Marie Elhenicky, Peter W Husslein, Rainer Lehner
BACKGROUND: The number of pregnant women with severe comorbidities is increasing. The aim of the present study was to analyze outcomes and determine trends in women who required peripartum admission to the intensive care unit (ICU). METHODS: In this retrospective study, we identified all women who were admitted to the ICU between the second trimester of pregnancy and 6 weeks postpartum. Women with ICU admission between 2011 and 2014 were assigned to the study group, whereas those admitted between 1996 and 2003 were assigned to the historical group...
January 18, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28100086/tracking-down-a-solution-exploring-the-acceptability-and-value-of-wearable-gps-devices-for-older-persons-individuals-with-a-disability-and-their-support-persons
#13
Brittany Williamson, Tammy Aplin, Desleigh de Jonge, Matthew Goyne
PURPOSE: To explore the acceptability and value of three wearable GPS devices for older persons and individuals with a disability and safety concerns when accessing the community. METHODS: This pilot study explored six wearers' and their support persons' experience of using three different wearable GPS devices (a pendant, watch, and mini GPS phone), each for a two-week period. RESULTS: Participants identified safety as the main value of using a wearable GPS device...
January 18, 2017: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/28099241/fmri-with-central-vision-loss-effects-of-fixation-locus-and-stimulus-type
#14
Tina Plank, Jozef Frolo, Sabine Brandl-Rühle, Agnes B Renner, Herbert Jägle, Mark W Greenlee
PURPOSE: In patients with central visual field scotomata, a large part of visual cortex is not adequately stimulated. Patients often use a new eccentric fixation area on intact peripheral retina ("preferred retinal locus"-PRL) that functions as a pseudo-fovea. We used functional magnetic resonance imaging (fMRI) to examine whether stimulating this pseudo-fovea leads to increased activation or altered activation patterns in visual cortex in comparison to stimulating a comparable peripheral area in the opposite hemifield (OppPRL)...
January 18, 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28099212/dysfunctional-tear-syndrome-dry-eye-disease-and-associated-tear-film-disorders-new-strategies-for-diagnosis-and-treatment
#15
Mark S Milner, Kenneth A Beckman, Jodi I Luchs, Quentin B Allen, Richard M Awdeh, John Berdahl, Thomas S Boland, Carlos Buznego, Joseph P Gira, Damien F Goldberg, David Goldman, Raj K Goyal, Mitchell A Jackson, James Katz, Terry Kim, Parag A Majmudar, Ranjan P Malhotra, Marguerite B McDonald, Rajesh K Rajpal, Tal Raviv, Sheri Rowen, Neda Shamie, Jonathan D Solomon, Karl Stonecipher, Shachar Tauber, William Trattler, Keith A Walter, George O Waring, Robert J Weinstock, William F Wiley, Elizabeth Yeu
Dysfunctional tear syndrome (DTS) is a common and complex condition affecting the ocular surface. The health and normal functioning of the ocular surface is dependent on a stable and sufficient tear film. Clinician awareness of conditions affecting the ocular surface has increased in recent years because of expanded research and the publication of diagnosis and treatment guidelines pertaining to disorders resulting in DTS, including the Delphi panel treatment recommendations for DTS (2006), the International Dry Eye Workshop (DEWS) (2007), the Meibomian Gland Dysfunction (MGD) Workshop (2011), and the updated Preferred Practice Pattern guidelines from the American Academy of Ophthalmology pertaining to dry eye and blepharitis (2013)...
January 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28098410/juror-decision-making-in-death-penalty-sentencing-when-presented-with-defendant-s-history-of-child-abuse-or-neglect
#16
Lisa L Bell Holleran, Tyler J Vaughan, Donna M Vandiver
Previous studies have found aggravating, mitigating, and null effects of defendant histories of abuse and neglect on punishment preferences in capital sentencing. Perceiving these defendants as more dangerous, jurors may be more likely to favor the death penalty when such evidence is presented. This is counter to the intuition that abuse or neglect reduces culpability, and therefore mitigates the severity of punishment. We investigated the effect of defendant childhood physical abuse, sexual abuse, or neglect on the probability of a prospective juror preferring the death penalty in an between-subject experimental design...
January 18, 2017: Behavioral Sciences & the Law
https://www.readbyqxmd.com/read/28098059/laparoscopic-ileocecal-resection-in-acute-and-chronic-presentations-of-crohn-s-disease-a-single-center-experience
#17
G Cocorullo, R Tutino, N Falco, G Salamone, T Fontana, L Licari, G Gulotta
INTRODUCTION: The terminal ileum is the most involved tract in Crohn's disease. The obstruction in this location is the most frequent complication. Acute or chronic presentations can occur. Surgery finds a role in the management of chronic strictures and in acute clinical presentations with complications not improving with conservative therapy. PATIENTS AND METHODS: We investigate the outcome of patients with obstruction of the ileo-cecal bowel tract laparoscopically managed...
September 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28096361/thermal-driven-domain-and-cargo-transport-in-lipid-membranes
#18
Emma L Talbot, Lucia Parolini, Jurij Kotar, Lorenzo Di Michele, Pietro Cicuta
Domain migration is observed on the surface of ternary giant unilamellar vesicles held in a temperature gradient in conditions where they exhibit coexistence of two liquid phases. The migration localizes domains to the hot side of the vesicle, regardless of whether the domain is composed of the more ordered or disordered phase and regardless of the proximity to chamber boundaries. The distribution of domains is explored for domains that coarsen and for those held apart due to long-range repulsions. After considering several potential mechanisms for the migration, including the temperature preferences for each lipid, the favored curvature for each phase, and the thermophoretic flow around the vesicle, we show that observations are consistent with the general process of minimizing the system's line tension energy, because of the lowering of line interface energy closer to mixing...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28096131/nutrition-micrornas-and-human-health
#19
REVIEW
Juan Cui, Beiyan Zhou, Sharon A Ross, Janos Zempleni
MicroRNAs (miRs) hybridize with complementary sequences in mRNA and silence genes by destabilizing mRNA or preventing translation of mRNA. Over 60% of human protein-coding genes are regulated by miRs, and 1881 high-confidence miRs are encoded in the human genome. Evidence suggests that miRs not only are synthesized endogenously, but also might be obtained from dietary sources, and that food compounds alter the expression of endogenous miR genes. The main food matrices for studies of biological activity of dietary miRs include plant foods and cow milk...
January 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28095084/changes-on-walking-during-street-crossing-situations-and-on-dorsiflexion-strength-of-older-caribbean-americans-after-an-exercise-program-a-pilot-study
#20
Edgar R Vieira, Ruth Tappen, Sareen S Gropper, Maria T Severi, Gabriella Engstrom, Marcio R de Oliveira, Alexandre C Barbosa, Rubens A da Silva
The objective of this pilot study was to evaluate a 6-month exercise program completed by 10 older Caribbean Americans. Assessments were done at baseline, 3 and 6 months and included walks on an instrumented mat at preferred speed, and during street crossing simulations with regular (10s) and with reduced time (5s). There were no significant differences on preferred walking speed overtime. Differences between the street crossing conditions were found only at 6 months. Significant changes overtime among the assessments were found only during street crossing with reduced time...
January 17, 2017: Journal of Aging and Physical Activity
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