Read by QxMD icon Read

nava s

J L Vilas, J Navas, J Gómez-Blanco, J M de la Rosa-Trevín, R Melero, I Peschiera, I Ferlenghi, J Cuenca, R Marabini, J M Carazo, J Vargas, C O S Sorzano
Random conical tilt (RCT) and orthogonal tilt reconstruction (OTR) are two remarkable methods for reconstructing the three-dimensional structure of macromolecules at low resolution. These techniques use two images at two different sample tilts. One of the most demanding steps in these methods at the image processing level is to identify corresponding particles on both micrographs, and manual or semiautomatic matching methods are usually used. Here we present an approach to solve this bottleneck with a fully automatic method for assigning particle tilt pairs...
October 18, 2016: Journal of Structural Biology
J T Canevari, A J Mangold, A A Guglielmone, S Nava
The population dynamics of Rhipicephalus microplus (Ixodida: Ixodidae) in northwest Argentina was analysed to support the design of strategic methods for its control. Both parasitic and non-parasitic phases were studied. The seasonal activity of R. microplus in its parasitic phase was characterized by three peaks in abundance: the first in mid-late spring; the second in summer, and the third in autumn. The non-parasitic phase of R. microplus was characterized by a long total non-parasitic period observed after exposures of females from mid-summer to early autumn, a short total non-parasitic period observed after exposures of females from late winter to late spring, a short period of larval longevity in early and mid-summer, and no hatch of the eggs produced by females exposed in mid- and late autumn and winter...
October 16, 2016: Medical and Veterinary Entomology
A J Ruiz-Padilla, J I Gamez-Nava, A M Saldaña-Cruz, J D Murillo-Vazquez, M L Vazquez-Villegas, S A Zavaleta-Muñiz, B T Martín-Márquez, J M Ponce-Guarneros, N A Rodriguez Jimenez, A Flores-Chavez, F Sandoval-Garcia, J C Vasquez-Jimenez, E G Cardona-Muñoz, S E Totsuka-Sutto, L Gonzalez-Lopez
Objective. To evaluate the association of -174G/C IL-6 polymorphism with failure in therapeutic response to methotrexate (MTX) or leflunomide (LEF). This prospective, observational cohort included 96 Mexican-Mestizo patients with moderate or severe rheumatoid arthritis (RA), initiating MTX or LEF, genotyped for IL-6 -174G/C polymorphism by PCR-RFLP. Therapeutic response was strictly defined: only if patients achieved remission or low disease activity (DAS-28 < 3.2). Results. Patients with MTX or LEF had significant decrement in DAS-28 (p < 0...
2016: BioMed Research International
A Castellanos-Gonzalez, H Sparks, S Nava, W Huang, Z Zhang, K Rivas, M Hulverson, L Barrett, K K Ojo, E Fan, W C Van Voorhis, A C White
Cryptosporidium is recognized as one of the main causes of childhood diarrhea worldwide. However, the current treatment for cryptosporidiosis is suboptimal. Calcium flux is essential for entry in apicomplexan parasites. Calcium dependent protein kinases (CDPKs) are distinct from protein kinases of mammals, and the CDPK1 of the apicomplexan Cryptosporidium lack side-chains that typically block a hydrophobic pocket in protein kinases. We exploited this to develop bumped kinase inhibitors (BKI) that selectively target CDPK1...
October 12, 2016: Journal of Infectious Diseases
Anne E Nigra, Keeve E Nachman, David C Love, Maria Grau-Perez, Ana Navas-Acien
BACKGROUND: Arsenicals (roxarsone and nitarsone) used in poultry production likely increase inorganic arsenic (iAs), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), and roxarsone or nitarsone concentrations in poultry meat. The association between poultry intake and exposure to these arsenic species, as reflected in elevated urinary arsenic concentrations, however, is unknown. OBJECTIVES: Evaluate the association between 24-hour dietary recall of poultry consumption and arsenic exposure in the U...
October 13, 2016: Environmental Health Perspectives
Keeve E Nachman, David C Love, Patrick A Baron, Anne E Nigra, Manuela Murko, Georg Raber, Kevin A Francesconi, Ana Navas-Acien
BACKGROUND: Use of nitarsone, an arsenic-based poultry drug, may result in dietary exposures to inorganic arsenic (iAs) and other arsenic species. Nitarsone was withdrawn from the US market in 2015, but use in other countries may continue. OBJECTIVES: Characterize the impact of nitarsone use on arsenic species in turkey meat and arsenic exposures among turkey consumers, and estimate cancer risk increases from consuming turkey treated with nitarsone prior to its 2015 US withdrawal...
October 13, 2016: Environmental Health Perspectives
O Maiques, A Macià, S Moreno, C Barceló, M Santacana, A Vea, J Herreros, S Gatius, E Ortega, J Valls, B J Chen, D Llobet-Navas, X Matias-Guiu, C Cantí, R M Marti
BACKGROUND AND OBJECTIVES: Cutaneous malignant melanoma arises from transformed melanocytes de novo or from congenital or acquired melanocytic nevi. We have recently reported that T-type Ca(2+) channels (TTCs) are upregulated in human melanoma and play an important role on cell proliferation. The aim of this study was to describe for the first time in formalin-fixed-paraffin-embedded tissue the immunoexpression of TT-Cs in biopsies of normal skin, acquired melanocytic nevi and melanoma, in order to evaluate their role in melanomagenesis and/or tumor progression, their utility as prognostic markers and their possible use in targeted therapies...
October 8, 2016: British Journal of Dermatology
Mira A Patel, David J Mener, Esther Garcia-Esquinas, Ana Navas-Acien, Yuri Agrawal, Sandra Y Lin
OBJECTIVES: To describe the association between active, environmental tobacco smoke (ETS) exposure and the prevalence of eustachian tube dysfunction (ETD) in the U.S. pediatric population. STUDY DESIGN: Cross-sectional. SETTING: U.S. representative demographic and audiometric data from the National Health and Nutrition Examination Survey (NHANES);2005-2010. SUBJECTS AND METHODS: The study consisted of 2,977 children aged 12-19 years...
2016: PloS One
Miranda R Jones, Maria Tellez-Plaza, Dhananjay Vaidya, Maria Grau, Kevin A Francesconi, Walter Goessler, Eliseo Guallar, Wendy S Post, Joel D Kaufman, Ana Navas-Acien
The sum of urinary inorganic arsenic (iAs) and methylated arsenic (monomethylarsonate and dimethylarsinate (DMA)) species is the main biomarker of iAs exposure. Assessing iAs exposure, however, is difficult in populations with moderate-to-high seafood intakes. In the present study, we used subsamples from the Multi-Ethnic Study of Atherosclerosis (2000-2002) (n = 310) and the 2003-2006 National Health and Nutrition Examination Survey (n = 1,175). We calibrated urinary concentrations of non-seafood-derived iAs, DMA, and methylarsonate, as well as the sum of inorganic and methylated arsenic species, in the Multi-Ethnic Study of Atherosclerosis and of DMA in the National Health and Nutrition Examination Survey by regressing their original concentrations by arsenobetaine and extracting model residuals...
October 15, 2016: American Journal of Epidemiology
Jeanne L Steiner, Luis Anez-Nava, Madelon Baranoski, Robert Cole, Larry Davidson, Miriam Delphin-Rittmon, Charles Dike, Paul J DiLeo, Ronald S Duman, Thomas Kirk, John Krystal, Robert T Malison, Robert M Rohrbaugh, Michael J Sernyak, Vinod Srihari, Thomas Styron, Jacob K Tebes, Scott Woods, Howard Zonana, Selby C Jacobs
September 28, 2016, marked the 50th anniversary of the Connecticut Mental Health Center, a state-owned and state-operated joint venture between the state and Yale University built and sustained with federal, state, and university funds. Collaboration across these entities has produced a wide array of clinical, educational, and research initiatives, a few of which are described in this column. The missions of clinical care, research, and education remain the foundation for an organization that serves 5,000 individuals each year who are poor and who experience serious mental illnesses and substance use disorders...
October 3, 2016: Psychiatric Services: a Journal of the American Psychiatric Association
A Demoule, M Clavel, C Rolland-Debord, S Perbet, N Terzi, A Kouatchet, F Wallet, H Roze, F Vargas, C Guerin, J Dellamonica, S Jaber, L Brochard, T Similowski
PURPOSE: Neurally adjusted ventilatory assist (NAVA) is a ventilatory mode that tailors the level of assistance delivered by the ventilator to the electromyographic activity of the diaphragm. The objective of this study was to compare NAVA and pressure support ventilation (PSV) in the early phase of weaning from mechanical ventilation. METHODS: A multicentre randomized controlled trial of 128 intubated adults recovering from acute respiratory failure was conducted in 11 intensive care units...
September 30, 2016: Intensive Care Medicine
E L Tarragona, J F Soares, F B Costa, M B Labruna, S Nava
The aim of this work was to test the vectorial competence of Amblyomma tonelliae (Ixodida: Ixodidae) to transmit Rickettsia rickettsii (Rickettsiales: Rickettsiaceae), the agent of Rocky Mountain spotted fever (RMSF). All parasitic stages of A. tonelliae were exposed to R. rickettsii by allowing each stage to feed on hosts inoculated with this pathogen. Thereafter, ticks were fed on uninfected hosts. All stages of A. tonelliae were able to acquire the R. rickettsii infection and maintain it by transstadial and transovarial transmission...
September 28, 2016: Medical and Veterinary Entomology
Enrique Pérez-Gutiérrez, Denisse Barreiro-Argüelles, José-Luis Maldonado, Marco-Antonio Meneses-Nava, Oracio Barbosa-García, Gabriel Ramos-Ortíz, Mario Rodríguez, Canek Fuentes-Hernández
In this Research Article, the effect of two techniques for top-electrode deposition in organic photovoltaics (OPVs) cells with the configuration ITO/PEDOT:PSS/PTB7-Th:PC71BM/PFN/top-electrode is analyzed. One deposition was made by evaporation under high vacuum, meanwhile the other was carried out at normal room atmosphere; for the former, a double layer of Ca and the eutectic alloy Field's metal (FM) was thermally evaporated, while for the latter FM was deposited just by melting and dropping it on top of the delimited active area at temperatures about 90 °C...
October 12, 2016: ACS Applied Materials & Interfaces
M Z Groth, A E Loeck, S D Nörnberg, D Bernardi, D E Nava
Fopius arisanus (Sonan, 1932) (Hymenoptera: Braconidae) is an egg-larval parasitoid used in control programs of Bactrocera dorsalis (Hendel) and Ceratitis capitata (Wiedemann). In Brazil, C. capitata and Anastrepha fraterculus (Wiedemann) are considered the main tephritid pests of exotic and indigenous fruits. The objective of this study was to study the biology of F. arisanus in C. capitata and A. fraterculus Eggs of the two fruit fly species were used to determine the parasitism rate, number of offspring, emergence rate, sex ratio, adult weight and longevity of male and female F...
2016: Journal of Insect Science
B LoVerde, K S Firestone, H M Stein
OBJECTIVE: Neurally adjusted ventilatory assist (NAVA) is a mode of mechanical ventilation that delivers ventilatory support in synchrony to the patient's respiratory needs using NAVA level, a proportionality constant that converts the electrical activity of the diaphragm (Edi) into a peak pressure (PIP). Recent published studies suggest that neonates can control the delivered ventilatory support through neural feedback. Systematically increasing the NAVA level initially increases the PIP while maintaining a constant Edi until an inflection point or breakpoint (BrP) is reached, at which time the PIP plateaus and the Edi signal decreases...
September 15, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
N Franceschini, R C Fry, P Balakrishnan, A Navas-Acien, C Oliver-Williams, A G Howard, S A Cole, K Haack, E M Lange, B V Howard, L G Best, K A Francesconi, W Goessler, J G Umans, M Tellez-Plaza
Cadmium (Cd) is an environmental pollutant that has been associated with cardiovascular disease in populations, but the relationship of Cd with hypertension has been inconsistent. We studied the association between urinary Cd concentrations, a measure of total body burden, and blood pressure in American Indians, a US population with above national average Cd burden. Urinary Cd was measured using inductively coupled plasma mass spectrometry, and adjusted for urinary creatinine concentration. Among 3714 middle-aged American Indian participants of the Strong Heart Study (mean age 56 years, 41% male, 67% ever-smokers, 23% taking antihypertensive medications), urinary Cd ranged from 0...
September 15, 2016: Journal of Human Hypertension
Lindsay M Reynolds, Hoda S Magid, Gloria C Chi, Kurt Lohman, R Graham Barr, Joel D Kaufman, Ina Hoeschele, Michael J Blaha, Ana Navas-Acien, Yongmei Liu
INTRODUCTION: Cigarette smoking is inversely associated with DNA methylation of the aryl-hydrocarbon receptor repressor (AHRR; cg05575921). However, the association between secondhand smoke (SHS) exposure and AHRR methylation is unknown. METHODS: DNA methylation of AHRR cg05575921 in CD14+ monocyte samples, from 495 never smokers and 411 former smokers (having quit smoking ≥15 years) from the Multi-Ethnic Study of Atherosclerosis (MESA), was cross-sectionally compared with concomitantly ascertained self-reported SHS exposure, urine cotinine concentrations, and estimates of air pollutants at participants' homes...
August 31, 2016: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
M M Hernández Ruiz de Eguilaz, M A Batlle, B Martínez de Morentin, R San-Cristóbal, S Pérez-Díez, S Navas-Carretero, J A Martínez
A high caloric intake in today's nutrition and a sedentary lifestyle are the main causes of the notable increase in obesity in our society. In turn, this results in an increase in associated pathologies, such as metabolic syndrome and diabetes type 2. In the present work we review most recent studies and programs, which are significant due to their sample size and geographical diversity. It clearly shows that changes in alimentation and lifestyles are an effective instrument for combatting or delaying the onset of these diseases...
2016: Anales del Sistema Sanitario de Navarra
Kerstin Hund-Rinke, Anders Baun, Denisa Cupi, Teresa F Fernandes, Richard Handy, John H Kinross, José M Navas, Willie Peijnenburg, Karsten Schlich, Benjamin J Shaw, Janeck J Scott-Fordsmand
Regulatory ecotoxicity testing of chemicals is of societal importance and a large effort is undertaken at the OECD to ensure that OECD test guidelines (TGs) for nanomaterials (NMs) are available. Significant progress to support the adaptation of selected TGs to NMs was achieved in the context of the project MARINA ( ) funded within the 7th European Framework Program. Eight OECD TGs were adapted based on the testing of at least one ion-releasing NM (Ag) and two inert NMs (TiO2). With the materials applied, two main variants of NMs (ion releasing vs...
September 20, 2016: Nanotoxicology
M Khanmohammadi, S Darkner, J Sporring, N Nava, J R Nyengaard, G Wegener, M Popoli
Behavioural stress has shown to strongly affect neurotransmission within the neocortex. In this study, we analysed the effect of an acute stress model on density and distribution of neurotransmitter-containing vesicles within medial prefrontal cortex. Serial section transmission electron microscopy was employed to compare two groups of male rats: (1) rats subjected to foot-shock stress and (2) rats with sham stress as control group. Two-dimensional (2D) density measures are common in microscopic images and are estimated by following a 2D path in-section...
August 22, 2016: Journal of Microscopy
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"