Read by QxMD icon Read


Juana Angélica Ramos-Ríos, Esperanza Ramírez-Hernández, Eliza Mireya Vázquez-Rodríguez, Francisco Vázquez-Nava
BACKGROUND: Asthma, which is characterized by mouth breathing and by the use of drugs for its treatment, affects between 1 and 30% of children and adolescents. There are only few studies reporting its impact on the oral cavity. OBJECTIVE: To find out the most common asthma-associated repercussions in 6 to 12-year-old children. METHODS: Cross-sectional, comparative, analytical study carried out in 2 primary schools from Coclique, Veracruz, Mexico, in 6 to 12-year-old children...
July 2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
Alice Meroni, Giulia M Nava, Sarah Sertic, Paolo Plevani, Marco Muzi-Falconi, Federico Lazzaro
Ribonucleotides (rNTPs) are incorporated into genomic DNA at a relatively high frequency during replication. They have beneficial effects but, if not removed from the chromosomes, increase genomic instability. Here, we describe a fast method to easily estimate the amounts of embedded ribonucleotides into the genome. The protocol described is performed in Saccharomyces cerevisiae and allows us to quantify altered levels of rNMPs due to different mutations in the replicative polymerase ε. However, this protocol can be easily applied to cells derived from any organism...
2018: Methods in Molecular Biology
José M Garrido-Balsells, F Javier Lopez-Martinez, Miguel Castillo-Vázquez, Antonio Jurado-Navas, Antonio Puerta-Notario
We analyze the performance of a free-space optical (FSO) link affected by atmospheric turbulence and line-of-sight (LOS) blockage. For this purpose, the atmospheric turbulence induced fading is modeled by the ℳ distribution, which includes the Gamma-Gamma distribution as special case. We exploit the fact that the physical interpretation of the ℳ distribution allows to split the optical energy through the propagation link into three different components: two coherent components and one incoherent scatter component...
October 16, 2017: Optics Express
Katherine A Moon, Shilpi Oberoi, Aaron Barchowsky, Yu Chen, Eliseo Guallar, Keeve E Nachman, Mahfuzar Rahman, Nazmul Sohel, Daniela D'Ippoliti, Timothy J Wade, Katherine A James, Shohreh F Farzan, Margaret R Karagas, Habibul Ahsan, Ana Navas-Acien
Background: Consistent evidence at high levels of water arsenic (≥100 µg/l), and growing evidence at low-moderate levels (<100 µg/l), support a link with cardiovascular disease (CVD). The shape of the dose-response across low-moderate and high levels of arsenic in drinking water is uncertain and critical for risk assessment. Methods: We conducted a systematic review of general population epidemiological studies of arsenic and incident clinical CVD (all CVD, coronary heart disease (CHD) and stroke) with three or more exposure categories...
September 23, 2017: International Journal of Epidemiology
Claire Bernardin Souibgui, Anthony Zoropogui, Jeremy Voisin, Sebastien Ribun, Valentin Vasselon, Petar Pujic, Veronica Rodriguez-Nava, Patrick Belly, Benoit Cournoyer, Didier Blaha
BACKGROUND: Parkinson's disease (PD) is a disorder characterized by dopaminergic neuron programmed cell death. The etiology of PD remains uncertain-some cases are due to selected genes associated with familial heredity, others are due to environmental exposure to toxic components, but over 90% of cases have a sporadic origin. Nocardia are Actinobacteria that can cause human diseases like nocardiosis. This illness can lead to lung infection or central nervous system (CNS) invasion in both immunocompromised and immunocompetent individuals...
2017: PeerJ
G Maldonado, G Nava, A Plancarte
We identified and characterized the first two glutathione transferases (GSTs) isolated from juvenile cysts of Taenia crassiceps (EC The two glutathione transferases (TcGST1 and TcGST2) were purified in a single-step protocol using glutathione (GSH)-sepharose chromatography in combination with a GSH gradient. The specific activities of TcGST1 and TcGST2 were 26 U mg-1 and 19 U mg-1, respectively, both at 25°C and pH 6.5 with 1-chloro-2,4-dinitrobenzene (CDNB) and GSH as substrates. The K m(CDNB) and K cat(CDNB) values for TcGST1 and TcGST2 (0...
October 16, 2017: Journal of Helminthology
A Mesa, E Nava, A Fernández Del Valle, B Argüelles, R Menéndez-Del Llano, S Sal de Rellán
INTRODUCTION: Muscle-invasive bladder malignancies represent 20-30% of all bladder cancers. These patients require imaging tests to determine the regional and distant staging. OBJECTIVE: To describe the role of various imaging tests in the diagnosis, staging and follow-up of muscle-invasive bladder cancer. To assess recent developments in radiology aimed at improving the sensitivity and specificity of local staging and treatment response. ACQUISITION OF EVIDENCE: We conducted an updated literature review...
October 10, 2017: Actas Urologicas Españolas
Adrian Ruiz-Hernandez, Ana Navas-Acien, Roberto Pastor-Barriuso, Ciprian M Crainiceanu, Josep Redon, Eliseo Guallar, Maria Tellez-Plaza
Background: Lead and cadmium exposures have markedly declined in the USA following the implementation of large-scale public health policies and could have contributed to the unexplained decline in cardiovascular mortality in US adults. We evaluated the potential contribution of lead and cadmium exposure reductions to explain decreasing cardiovascular mortality trends occurring in the USA from 1988-94 to 1999-2004. Methods: Prospective study in 15 421 adults ≥40 years old who had participated in the National Health and Nutrition Examination Survey 1988-94 or 1999-2004...
August 30, 2017: International Journal of Epidemiology
Ineke Fengler, Elena Nava, Agnes K Villwock, Andreas Büchner, Thomas Lenarz, Brigitte Röder
Emotions are commonly recognized by combining auditory and visual signals (i.e., vocal and facial expressions). Yet it is unknown whether the ability to link emotional signals across modalities depends on early experience with audio-visual stimuli. In the present study, we investigated the role of auditory experience at different stages of development for auditory, visual, and multisensory emotion recognition abilities in three groups of adolescent and adult cochlear implant (CI) users. CI users had a different deafness onset and were compared to three groups of age- and gender-matched hearing control participants...
2017: PloS One
Ángel Nava-Castañeda, José Luis Tovilla-Canales, Francisca Zuazo, Lourdes Rodríguez-Cabrera, Lilia Garnica-Hayashi
BACKGROUND: Alveolar Soft Part Sarcoma is a rare malignant tumor of uncertain histogenesis, representing 0.5-1% of all soft tissue tumors. It occurs predominantly in head and neck regions, especially the orbit and the tongue, in infants, causing no specific symptoms for an extended period of time. CASE: A four year old girl was brought to consultation because of persistent swelling of her left upper and lower eyelid for the past six months. A 4 mm proptosis was noted on her left eye with significant upwards displacement of the globe...
January 2017: Nepalese Journal of Ophthalmology
Rodrigo San-Cristobal, Santiago Navas-Carretero, Katherine M Livingstone, Carlos Celis-Morales, Anna L Macready, Rosalind Fallaize, Clare B O'Donovan, Christina P Lambrinou, George Moschonis, Cyril F M Marsaux, Yannis Manios, Miroslaw Jarosz, Hannelore Daniel, Eileen R Gibney, Lorraine Brennan, Christian A Drevon, Thomas E Gundersen, Mike Gibney, Wim H M Saris, Julie A Lovegrove, Keith Grimaldi, Laurence D Parnell, Jildau Bouwman, Ben Van Ommen, John C Mathers, J Alfredo Martinez
Mediterranean Diet (MedDiet) adherence has been proven to produce numerous health benefits. In addition, nutrigenetic studies have explained some individual variations in the response to specific dietary patterns. The present research aimed to explore associations and potential interactions between MedDiet adherence and genetic background throughout the Food4Me web-based nutritional intervention. Dietary, anthropometrical and biochemical data from volunteers of the Food4Me study were collected at baseline and after 6 months...
October 11, 2017: Nutrients
Santiago González Vázquez, Susana de la Riva Onandía, José Ignacio Echeveste, Miguel Muñoz Navas
Atezolizumab is an IgG1 isotype monoclonal antibody against the protein programmed cell death-ligand 1 (PD- L1). PD-L1 may be highly expressed in some tumors and is believed to inhibit immune cells that recognize and attack tumor cells. Inhibition of PD-L1 can remove its inhibitory effect and provoke an anti-tumor response. In October 2016, the Food and Drugs Administration (FDA) approved atezolizumab for the treatment of patients with metastatic non-small cell lung cancer after disease progression during or following platinum based chemotherapy...
October 11, 2017: Revista Española de Enfermedades Digestivas
Johanne Vad, Covadonga Orejas, Juan Moreno-Navas, Helen S Findlay, J Murray Roberts
Coral growth patterns result from an interplay of coral biology and environmental conditions. In this study colony size and proportion of live and dead skeletons in the cold-water coral (CWC) Lophelia pertusa (Linnaeus, 1758) were measured using video footage from Remotely Operated Vehicle (ROV) transects conducted at the inshore Mingulay Reef Complex (MRC) and at the offshore PISCES site (Rockall Bank) in the NE Atlantic. The main goal of this paper was to explore the development of a simple method to quantify coral growth and its potential application as an assessment tool of the health of these remote habitats...
2017: PeerJ
Carlos Mario Jaramillo, Fernando de La Hoz, Alexandra Porras, Diana di Filippo, Luz Angela Choconta-Piraquive, Edra Payares, Neyla Montes, Maria-Cristina Navas
BACKGROUND: Hepatitis B Virus (HBV) infection is a worldwide public health problem. In the 1980's a highly effective and safe vaccine against HBV was developed, although breakthrough infection still occasionally occurs because of the emergence of escape mutants. The aim of this study was to identify HBV genotypes and escape mutants in children and their mothers in Amerindian communities of the Amazonas State, Southern Colombia. METHODS: Blood specimens collected from children and mothers belonging to 37 Amerindian communities in Amazonas state, were screened for HBsAg and anti-HBc using ELISA...
2017: PloS One
Mirna Gisel González-Mercado, Fernando Rivas, M Patricia Gallegos-Arreola, M Cristina Morán-Moguel, Mario Salazar-Páramo, Laura González-López, J Iván Gámez-Nava, J Francisco Muñoz-Valle, Ricardo Medina-Coss Y León, Anahí González-Mercado, Mario A Aceves, Nory O Dávalos, Agustín Macías-Chumacera, Ingrid P Dávalos
AIM: To investigate the relationships of polymorphisms in genes whose protein products are related in the metabolic pathway of folic acid, particularly MTRR A66G, RFC1 G80A, and MTHFR C677T and A1298C, and disease activity in Mexican patients with rheumatoid arthritis (RA) treated with methotrexate (MTX). MATERIALS AND METHODS: Sixty-eight patients with RA were included in the study who were being treated with MTX, either with or without other drugs. In addition to general data, disease activity was measured by the disease activity score 28 (DAS28)...
October 10, 2017: Genetic Testing and Molecular Biomarkers
Maximilian Joost, Matthew Nava, Wesley J Transue, Christopher C Cummins
Targeted as an example of a compound composed of a carbon atom together with two stable neutral leaving groups, 7-isocyano-7-azadibenzonorbornadiene, CN2A (1, A = C14H10 or anthracene) has been synthesized and spectroscopically and structurally characterized. The terminal C atom of 1 can be transferred: mesityl nitrile oxide reacts with 1 to produce carbon monoxide, likely via intermediacy of the N-isocyanate OCN2A. Reaction of 1 with [RuCl2(CO)(PCy3)2] leads to [RuCl2(CO)(1)(PCy3)2] which decomposes unselectively: in the product mixture, the carbide complex [RuCl2(C)(PCy3)2] was detected...
October 9, 2017: Chemical Communications: Chem Comm
Shiyu Zhang, Matthew J Nava, Gary K Chow, Nazario Lopez, Gang Wu, David R Britt, Daniel G Nocera, Christopher C Cummins
When solubilized in a hexacarboxamide cryptand anion receptor, the peroxide dianion reacts rapidly with CO2 in polar aprotic organic media to produce hydroperoxycarbonate (HOOCO2(-)) and peroxydicarbonate ((-)O2COOCO2(-)). Peroxydicarbonate is subject to thermal fragmentation into two equivalents of the highly reactive carbonate radical anion, which promotes hydrogen atom abstraction reactions responsible for the oxidative degradation of organic solvents. The activation and conversion of the peroxide dianion by CO2 is general...
September 1, 2017: Chemical Science
Luis Eduardo Morales-Buenrostro, Josefina Alberu, Eduardo Mancilla-Urrea, Alicia Vélez-García, Ramon Espinoza-Pérez, Jose Cruz-Santiago, Renato Parra-Michel, Idalia Parra-Avila, Gerardo Flores-Nava, Gabriela Caballero-Andrade, Alfonssina Niebla-Cardenas, Roberto Pérez-Avendaño, Alejandro Angulo-Dominguez, Silvia Lascarez, Sofía Sánchez-Román
OBJECTIVE: The number of successful pregnancies in kidney transplant (KT) recipients has increased in recent years. Little evidence is available about the risk of in utero immunosuppressive exposure for long-term cognitive consequences. The aim of this study was to evaluate the impact of immunosuppression during pregnancy on intellectual performance of children born to KT recipients. METHODS: Using a cross-sectional design, women who had undergone KT and their children (aged 4+ years) were recruited at the outpatient follow-up in five transplant centers...
October 8, 2017: Journal of Maternal-fetal & Neonatal Medicine
Daniel Rodrigues Stuginski, Carlos Arturo Navas, Fábio Cury de Barros, Agustín Camacho, José Eduardo Pereira Wilken Bicudo, Kathleen Fernandes Grego, José Eduardo de Carvalho
The current proposal about the variation of standard metabolic rates (SMR) in snakes predicts that SMR is influenced by the feeding frequency (frequent or infrequent feeders). However, feeding frequency in snakes is poorly studied and hard to quantify under natural conditions. Alternatively, foraging strategy was studied for a large number of species and is usually related to the feeding frequency. In this work, we performed a meta-analysis on the SMR of compiled data from 74 species of snakes obtained from the literature and five more different species of lanceheads (genus Bothrops), after categorization according to the foraging mode (ambush or active foraging) and regarding their phylogenetic history...
October 6, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
Ying-Chou Chen, Fahim Farzadfard, Nava Gharaei, William C W Chen, Jicong Cao, Timothy K Lu
The genome-wide perturbation of transcriptional networks with CRISPR-Cas technology has primarily involved systematic and targeted gene modulation. Here, we developed PRISM (Perturbing Regulatory Interactions by Synthetic Modulators), a screening platform that uses randomized CRISPR-Cas transcription factors (crisprTFs) to globally perturb transcriptional networks. By applying PRISM to a yeast model of Parkinson's disease (PD), we identified guide RNAs (gRNAs) that modulate transcriptional networks and protect cells from alpha-synuclein (αSyn) toxicity...
October 5, 2017: Molecular Cell
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"