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https://www.readbyqxmd.com/read/27932976/melatonin-and-nitrones-as-potential-therapeutic-agents-for-stroke
#1
Alejandro Romero, Eva Ramos, Paloma Patiño, Maria J Oset-Gasque, Francisco López-Muñoz, José Marco-Contelles
Stroke is a disease of aging affecting millions of people worldwide, and recombinant tissue-type plasminogen activator (r-tPA) is the only treatment approved. However, r-tPA has a low therapeutic window and secondary effects which limit its beneficial outcome, urging thus the search for new more efficient therapies. Among them, neuroprotection based on melatonin or nitrones, as free radical traps, have arisen as drug candidates due to their strong antioxidant power. In this Perspective article, an update on the specific results of the melatonin and several new nitrones are presented...
2016: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/27932116/surgical-complications-in-en-bloc-renal-transplantation
#2
M A Moreno de la Higuera Díaz, N Calvo Romero, I Pérez-Flores, M Calvo Arévalo, B Rodríguez Cubillo, A Shabaka, V López de la Manzanara, Á Gómez Vegas, J Blázquez Izquierdo, A I Sánchez-Fructuoso
En bloc pediatric transplantation (EBPT) began with the aim of increasing the donor pool due to the existing high demand for donors. At its inception, it was considered a type of suboptimal transplantation due to its association with a high incidence of vascular, urologic, and immunologic complications. The main objective of this study was to update information on EBPT with the largest case series that exists on a worldwide scale. In a retrospective study, the results obtained from brain-dead donors (BDDs; n = 770) were compared to those of EBPT (n = 100) from January 1990 to December 2012...
November 2016: Transplantation Proceedings
https://www.readbyqxmd.com/read/27931848/human-peripheral-late-exhausted-memory-b-cells-express-a-senescent-associated-secretory-phenotype-and-preferentially-utilize-metabolic-signaling-pathways
#3
Daniela Frasca, Alain Diaz, Maria Romero, Bonnie B Blomberg
The percentage of late/exhausted memory (LM) B cells increase with age and we show here that this is associated with a lower influenza vaccine response. To identify novel contributors to the phenotypic and functional changes observed in aged B cells, we sorted the major peripheral B cell subsets [naïve, IgM memory, switched memory (swIg) and late/exhausted memory (LM)] and determined their percentages in the peripheral blood as well as their level of immune activation by measuring basal levels of expression of multiple senescence-associated secretory phenotype (SASP) markers, such as pro-inflammatory cytokines (TNF-α/IL-6/IL-8), inflammatory micro-RNAs (miRs, miR-155/16/93), cell cycle regulators (p16(INK4))...
December 5, 2016: Experimental Gerontology
https://www.readbyqxmd.com/read/27930693/endothelin-b-receptors-on-primary-chicken-m%C3%A3-ller-cells-and-the-human-mio-m1-m%C3%A3-ller-cell-line-activate-erk-signaling-via-transactivation-of-epidermal-growth-factor-receptors
#4
Mohammad Harun-Or-Rashid, Dardan Konjusha, Caridad Galindo-Romero, Finn Hallböök
Injury to the eye or retina triggers Müller cells, the major glia cell of the retina, to dedifferentiate and proliferate. In some species they attain retinal progenitor properties and have the capacity to generate new neurons. The epidermal growth factor receptor (EGFR) system and extracellular signal-regulated kinase (ERK) signaling are key regulators of these processes in Müller cells. The extracellular signals that modulate and control these processes are not fully understood. In this work we studied whether endothelin receptor signaling can activate EGFR and ERK signaling in Müller cells...
2016: PloS One
https://www.readbyqxmd.com/read/27930358/histological-findings-and-predictors-of-cerebral-debris-from-transcatheter-aortic-valve-replacement-the-alster-experience
#5
Tobias Schmidt, Ozan Akdag, Peter Wohlmuth, Thomas Thielsen, Dimitry Schewel, Jury Schewel, Hannes Alessandrini, Felix Kreidel, Ralf Bader, Maria Romero, Elena Ladich, Renu Virmani, Ulrich Schäfer, Karl-Heinz Kuck, Christian Frerker
BACKGROUND: Histopathological analyses of debris captured by a cerebral protection system during transcatheter aortic valve replacement have been reported, but the origin of the captured debris was not determined and risk factors were not defined. METHODS AND RESULTS: Embolic debris was analyzed from 322 filters used in a dual-cerebral-filter protection system implemented during transcatheter aortic valve replacement for 161 patients (mean age 81 years, 82 male [51%], logistic EuroSCORE 19% [interquartile range 12-31%])...
November 10, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27929334/the-interactive-effect-of-parent-personality-and-medication-knowledge-on-adherence-in-children-awaiting-solid-organ-transplantation
#6
Jennifer L Lee, Cyd K Eaton, Kristin Loiselle Rich, Bonney Reed-Knight, Rochelle S Liverman, Laura L Mee, Ana M Gutierrez-Colina, Rene Romero, Ronald L Blount
OBJECTIVE: The study aimed to examine parent personality factors as predictors of parent medication knowledge and parent-report of child medication adherence. METHOD: Seventy-eight parents (Mage = 37.68, 87.2% female) of children (Mage = 8.89, range: 0-20 years) undergoing evaluation for a solid organ transplant were recruited. Parents completed questionnaires about their personality, knowledge of their child's medications, and their child's level of medication adherence...
December 8, 2016: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/27929040/involvement-of-p2x7-receptor-in-neuronal-degeneration-triggered-by-traumatic-injury
#7
Francisco M Nadal-Nicolás, Caridad Galindo-Romero, Francisco J Valiente-Soriano, María Barberà-Cremades, Carlos deTorre-Minguela, Manuel Salinas-Navarro, Pablo Pelegrín, Marta Agudo-Barriuso
Axonal injury is a common feature of central nervous system insults that culminates with the death of the affected neurons, and an irreversible loss of function. Inflammation is an important component of the neurodegenerative process, where the microglia plays an important role by releasing proinflammatory factors as well as clearing the death neurons by phagocytosis. Here we have identified the purinergic signaling through the P2X7 receptor as an important component for the neuronal death in a model of optic nerve axotomy...
December 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27927707/pancytopenia-associated-with-levetiracetam-in-an-epileptic-woman
#8
Rafael García Carretero, Marta Romero Brugera, Monica Olid-Velilla, Inmaculada Salamanca-Ramirez
Haematological toxicity due to antiepileptic drugs is uncommon, but the increased risk of aplastic anaemia has been reported. Few case reports have been published regarding pancytopenia associated with levetiracetam treatment, and its intrinsic pathogenesis is still unknown. We describe the case of a woman aged 77 years who presented with abdominal pain and loss of appetite. She had been taking valproic acid, due to a previous episode of epileptic seizures, and presented with drowsiness and dizziness. Valproate was discontinued and therapy with levetiracetam was initiated...
December 7, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27927103/mechanism-of-action-of-relaxant-effect-of-agastache-mexicana-ssp-mexicana-essential-oil-in-guinea-pig-trachea-smooth-muscle
#9
Andrés Navarrete, Natalia Ávila-Rosas, Mateo Majín-León, José Luis Balderas-López, Alejandro Alfaro-Romero, José Carlos Tavares-Carvalho
CONTEXT: Agastache mexicana ssp. mexicana (Kunth) Lint & Epling (Lamiaceae), popularly known as 'toronjil morado', is used in Mexican traditional medicine for the treatment of several diseases such as hypertension, anxiety and respiratory disorders. OBJECTIVE: This study investigates the relaxant action mechanism of A. mexicana ssp. mexicana essential oil (AMEO) in guinea-pig isolated trachea model. MATERIALS AND METHOD: AMEO was analyzed by GC/MS...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/27925714/how-many-body-correlations-and-%C3%AE-clustering-shape-6-he
#10
Carolina Romero-Redondo, Sofia Quaglioni, Petr Navrátil, Guillaume Hupin
The Borromean ^{6}He nucleus is an exotic system characterized by two halo neutrons orbiting around a compact ^{4}He (or α) core, in which the binary subsystems are unbound. The simultaneous reproduction of its small binding energy and extended matter and point-proton radii has been a challenge for ab initio theoretical calculations based on traditional bound-state methods. Using soft nucleon-nucleon interactions based on chiral effective field theory potentials, we show that supplementing the model space with ^{4}He+n+n cluster degrees of freedom largely solves this issue...
November 25, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27925190/s100a1-and-s100b-calcium-sensors-at-the-cross-roads-of-multiple-chondrogenic-pathways
#11
REVIEW
José Diaz-Romero, Dobrila Nesic
The S100 protein family comprises more than 20 members of small calcium binding proteins operating as Ca2 + -activated switches that interact and modulate the activity of a large number of targets. S100A1 and S100B, two members of this family, have been recently associated with the differentiation status of human articular chondrocytes. Both proteins are homogeneously expressed in all cartilage zones, their expression decreases during chondrocyte dedifferentiation, and can be induced under conditions promoting redifferentiation...
December 7, 2016: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/27925116/truck-drivers-traffic-accidents-in-the-state-of-s%C3%A3-o-paulo-prevalence-and-predictors
#12
Lucio Garcia de Oliveira, Carlos Vinícius Dias de Almeida, Lucia Pereira Barroso, Marcela Julio Cesar Gouvea, Daniel Romero Muñoz, Vilma Leyton
Abstract The mortality rate of traffic accidents (TA) is high in Brazil. Trucks are the second category of motor vehicles most often involved in TA. However, few studies have addressed the issue of TA among these professionals. The study aimed to estimate the prevalence of TA and their predictors in a sample of 684 truck drivers recruited in the state of São Paulo during 2012 and 2013. We requested participants to answer a research instrument on their personal and occupational data and their involvement in TA and traffic violations...
December 2016: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/27924327/universal-access-to-megastigmanes-through-controlled-cyclisation-towards-highly-substituted-cyclohexenes
#13
José A González-Delgado, Miguel A Romero, Uwe Pischel, Jesús F Arteaga
We report the selective formation of cyclohexenes with a tetrasubstituted double bond, the structural key element of megastigmanes. For this purpose the ZrCl4-mediated epoxide ring opening of epoxy-geranylacetone was employed. This approach provides a universal entry to the preparation of the members of the megastigmane family, which was exemplified in the asymmetric synthesis of tectoionol B.
December 7, 2016: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/27923672/functional-characterization-of-two-novel-purine-transporters-from-the-basidiomycota-phanerochaete-chrysosporium
#14
Mariana Barraco-Vega, Héctor Romero, Mariana Richero, María Pía Cerdeiras, Gianna Cecchetto
Purine transporters as substrate entry points in organisms, are involved in a number of cellular processes such as nitrogen source uptake, energy metabolism and synthesis of nucleic acids. In this study, two nucleobase transporter genes (phZ, phU) from Phanerochaete chrysosporium were cloned, identified, and functionally characterized. Our results show that PhZ is a transporter of adenine and hypoxanthine, and a protein belonging to the AzgA-like family, whilst PhU belongs to the NAT/NCS2 family, transporting xanthine and uric acid...
December 3, 2016: Gene
https://www.readbyqxmd.com/read/27922906/patient-outcomes-after-early-versus-late-tracheostomy-in-the-puerto-rico-trauma-hospital
#15
Ana M Romero Vázquez, Omar García Rodríguez, Ediel Ramos Meléndez, Pablo Rodríguez Ortiz
OBJECTIVE: This study aimed to evaluate the impact of early tracheostomy (ET, ≤7 days) versus that of late tracheostomy (LT, >7 days) on outcomes such as hospital length of stay (LOS), intensive care unit (ICU) days, mechanical ventilation (MV) days, and mortality ratio. METHODS: A historical cohort study was undertaken using charts of patients admitted to the Puerto Rico Trauma Hospital who required MV and underwent tracheostomies, from 2000 to 2013. A logistic regression was performed to evaluate the association between timing of tracheostomy and complications and mortality...
December 5, 2016: Journal of Patient Safety
https://www.readbyqxmd.com/read/27922273/prenatal-diagnosis-of-foetal-labial-fusion
#16
Maria Laseca Modrego, Raquel Garcia Rodriguez, Marta Armas Roca, Raquel Garcia Delgado, Azahar Romero Requejo, Margarita Medina Castellano, Jose Angel Garcia Hernandez
No abstract text is available yet for this article.
December 6, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27922043/breast-cancer-paloma-2-hope-beyond-the-threshold
#17
Diana Romero
No abstract text is available yet for this article.
December 6, 2016: Nature Reviews. Clinical Oncology
https://www.readbyqxmd.com/read/27920608/checklist-of-the-continental-fishes-of-the-state-of-chiapas-mexico-and-their-distribution
#18
Ernesto Velázquez-Veláquez, Jesús Manuel López-Vila, Adán Enrique Gómez-González, Emilio Ismael Romero-Berny, Jorge Luis Lievano-Trujillo, Wilfredo A Matamoros
An updated checklist of the distribution of fishes that inhabit the continental waters of the Mexican state of Chiapas is presented. The state was compartmentalized into 12 hydrological regions for the purpose of understanding the distribution of fish fauna across a state with large physiographic variance. The ichthyofauna of Chiapas is represented by 311 species distributed in two classes, 26 orders, 73 families, and 182 genera, including 12 exotic species. The families with the highest number of species were Cichlidae, Poeciliidae, Sciaenidae, Carangidae, Ariidae, Gobiidae, and Haemulidae...
2016: ZooKeys
https://www.readbyqxmd.com/read/27919795/current-and-novel-insights-into-the-neurophysiology-of-migraine-and-its-implications-for-therapeutics
#19
REVIEW
Simon Akerman, Marcela Romero-Reyes, Philip R Holland
Migraine headache and its associated symptoms have plagued humans for two millennia. It is manifest throughout the world, and affects more than 1/6 of the global population. It is the most common brain disorder, and is characterized by moderate to severe unilateral headache that is accompanied by vomiting, nausea, photophobia, phonophobia, and other hypersensitive symptoms of the senses. While there is still a clear lack of understanding of its neurophysiology, it is beginning to be understood, and it seems to suggest migraine is a disorder of brain sensory processing, characterized by a generalized neuronal hyperexcitability...
December 2, 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27919242/reducing-child-abuse-amongst-adolescents-in-low-and-middle-income-countries-a-pre-post-trial-in-south-africa
#20
Lucie Cluver, Franziska Meinck, Alexa Yakubovich, Jenny Doubt, Alice Redfern, Catherine Ward, Nasteha Salah, Sachin De Stone, Tshiamo Petersen, Phelisa Mpimpilashe, Rocio Herrero Romero, Lulu Ncobo, Jamie Lachman, Sibongile Tsoanyane, Yulia Shenderovich, Heidi Loening, Jasmina Byrne, Lorraine Sherr, Lauren Kaplan, Frances Gardner
BACKGROUND: No known studies have tested the effectiveness of child abuse prevention programmes for adolescents in low- or middle-income countries. 'Parenting for Lifelong Health' ( http://tiny.cc/whoPLH ) is a collaborative project to develop and rigorously test abuse-prevention parenting programmes for free use in low-resource contexts. Research aims of this first pre-post trial in South Africa were: i) to identify indicative effects of the programme on child abuse and related outcomes; ii) to investigate programme safety for testing in a future randomised trial, and iii) to identify potential adaptations...
July 13, 2016: BMC Public Health
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