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https://www.readbyqxmd.com/read/29684389/high-quality-forage-production-under-salinity-by-using-a-salt-tolerant-atnxh1-expressing-transgenic-alfalfa-combined-with-a-natural-stress-resistant-nitrogen-fixing-bacterium
#1
Margarita Stritzler, Pagano Elba, Carolina Berini, Cristina Gomez, Nicolás Ayub, Gabriela Soto
Alfalfa, usually known as the "Queen of Forages", is the main source of vegetable protein to meat and milk production systems worldwide. This legume is extremely rich in proteins due to its highly efficient symbiotic association with nitrogen-fixing strains. In the last years, alfalfa culture has been displaced to saline environments by other important crops, including major cereals, a fact that has reduced its biomass production and symbiotic nitrogen fixation. In this short communication, we report the high forage production and nutrient quality of alfalfa under saline conditions by alfalfa transformation with the AtNHX1 Na+ /H+ antiporter and inoculation with the stress-resistant nitrogen-fixing strain Sinorhizobium meliloti B401...
April 20, 2018: Journal of Biotechnology
https://www.readbyqxmd.com/read/29682202/ctcf-kdm4a-complex-correlates-with-histone-modifications-that-negatively-regulate-chd5-gene-expression-in-cancer-cell-lines
#2
Lissania Guerra-Calderas, Rodrigo González-Barrios, Carlos César Patiño, Nicolás Alcaraz, Marisol Salgado-Albarrán, David Cantú de León, Clementina Castro Hernández, Yesennia Sánchez-Pérez, Héctor Aquiles Maldonado-Martínez, Inti A De la Rosa-Velazquez, Fernanda Vargas-Romero, Luis A Herrera, Alejandro García-Carrancá, Ernesto Soto-Reyes
Histone demethylase KDM4A is involved in H3K9me3 and H3K36me3 demethylation, which are epigenetic modifications associated with gene silencing and RNA Polymerase II elongation, respectively. KDM4A is abnormally expressed in cancer, affecting the expression of multiple targets, such as the CHD5 gene. This enzyme localizes at the first intron of CHD5 , and the dissociation of KDM4A increases gene expression. In vitro assays showed that KDM4A-mediated demethylation is enhanced in the presence of CTCF, suggesting that CTCF could increase its enzymatic activity in vivo, however the specific mechanism by which CTCF and KDM4A might be involved in the CHD5 gene repression is poorly understood...
March 30, 2018: Oncotarget
https://www.readbyqxmd.com/read/29681509/regional-differences-in-brain-glucose-metabolism-determined-by-imaging-mass-spectrometry
#3
André Kleinridders, Heather A Ferris, Michelle L Reyzer, Michaela Rath, Marion Soto, M Lisa Manier, Jeffrey Spraggins, Zhihong Yang, Robert C Stanton, Richard M Caprioli, C Ronald Kahn
OBJECTIVE: Glucose is the major energy substrate of the brain and crucial for normal brain function. In diabetes, the brain is subject to episodes of hypo- and hyperglycemia resulting in acute outcomes ranging from confusion to seizures, while chronic metabolic dysregulation puts patients at increased risk for depression and Alzheimer's disease. In the present study, we aimed to determine how glucose is metabolized in different regions of the brain using imaging mass spectrometry (IMS)...
April 6, 2018: Molecular Metabolism
https://www.readbyqxmd.com/read/29679754/serum-25-hydroxyvitamin-d-and-breast-cancer-risk-by-pathological-subtype-mcc-spain
#4
Virginia Lope, Adela Castelló, Antonio Mena-Bravo, Pilar Amiano, Nuria Aragonés, Tania Fernández-Villa, Marcela Guevara, Trinidad Dierssen-Sotos, Guillermo Fernandez-Tardón, Gemma Castaño-Vinyals, Rafael Marcos-Gragera, Víctor Moreno, Dolores Salas-Trejo, Marian Diaz-Santos, Madalen Oribe, Isabel Romieu, Manolis Kogevinas, Feliciano Priego-Capote, Beatriz Pérez-Gómez, Marina Pollán
Epidemiologic evidence on the association between vitamin D and breast cancer is still inconclusive. This study analyzes the association between serum 25-hydroxyvitamin D (25(OH)D) and breast cancer risk by pathologic subtype, stage at diagnosis and specific breast cancer risk factors. We conducted a population-based multicase-control study where 546 histologically-confirmed breast cancer cases and 558 population controls, frequently matched by geographic area, age and body mass index, were recruited in 12 Spanish provinces (MCC-Spain)...
April 18, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29677957/standardising-the-development-of-odm-converters-the-odmtoolbox
#5
Iñaki Soto-Rey, Philipp Neuhaus, Philipp Bruland, Sophia Geßner, Julian Varghese, Stefan Hegselmann, Tobias Brix, Martin Dugas, Michael Storck
CDISC's Operational Data Model (ODM) is a flexible standard for exchanging and archiving metadata and subject clinical data in clinical trials. The Portal of Medical Data Models (MDM-Portal) uses ODM to store more than 15000 medical forms. As not every electronic health system accepts ODM as input format, there is a need for conversion between ODM and other data standards and formats. This research proposes a standardised template-based process to develop ODM converters. So far, ten converters have been developed and integrated in the MDM-Portal following this process and new ones should be included soon...
2018: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/29675401/analysis-of-the-antigenic-and-prophylactic-properties-of-the-leishmania-translation-initiation-factors-eif2-and-eif2b-in-natural-and-experimental-leishmaniasis
#6
Esther Garde, Laura Ramírez, Laura Corvo, José C Solana, M Elena Martín, Víctor M González, Carlos Gómez-Nieto, Aldina Barral, Manoel Barral-Netto, José M Requena, Salvador Iborra, Manuel Soto
Different members of intracellular protein families are recognized by the immune system of the vertebrate host infected by parasites of the genus Leishmania . Here, we have analyzed the antigenic and immunogenic properties of the Leishmania eIF2 and eIF2B translation initiation factors. An in silico search in Leishmania infantum sequence databases allowed the identification of the genes encoding the α, β, and γ subunits and the α, β, and δ subunits of the putative Leishmania orthologs of the eukaryotic initiation factors F2 (LieIF2) or F2B (LieIF2B), respectively...
2018: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/29674292/the-influence-of-mineral-particles-on-fibroblast-behaviour-a-comparative-study
#7
Diosangeles Soto Veliz, Jens C Luoto, Ilari Pulli, Martti Toivakka
Minerals are versatile tools utilised to modify and control the physical-chemical and functional properties of substrates. Those properties include ones directing cell fate; thus, minerals can potentially provide a direct and inexpensive method to manipulate cell behaviour. This paper shows how different minerals influence human dermal fibroblast behaviour depending on their properties. Different calcium carbonates, calcium sulphates, silica, silicates, and titanium dioxide were characterised using TEM, ATR-FTIR, and zeta potential measurements...
April 10, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29669028/the-grass-was-greener-repeated-evolution-of-specialized-morphologies-and-habitat-shifts-in-ghost-spiders-following-grassland-expansion-in-south-america
#8
F Sara Ceccarelli, Nicolás Mongiardino Koch, Eduardo M Soto, Mariana L Barone, Miquel A Arnedo, Martín J Ramírez
While grasslands, one of Earth's major biomes, are known for their close evolutionary ties with ungulate grazers, these habitats are also paramount to the origins and diversification of other animals. Within the primarily South American spider subfamily Amaurobioidinae (Anyphaenidae), several species are found living in the continent's grasslands, with some displaying putative morphological adaptations to dwelling unnoticed in the grass blades. Here, a dated molecular phylogeny provides the backbone for analyses revealing the ecological and morphological processes behind these spiders' grassland adaptations...
April 14, 2018: Systematic Biology
https://www.readbyqxmd.com/read/29666450/novel-hla-class-i-associations-with-hiv-1-control-in-a-unique-genetically-admixed-population
#9
Humberto Valenzuela-Ponce, Selma Alva-Hernández, Daniela Garrido-Rodríguez, Maribel Soto-Nava, Thalía García-Téllez, Tania Escamilla-Gómez, Claudia García-Morales, Verónica Sonia Quiroz-Morales, Daniela Tapia-Trejo, Silvia Del Arenal-Sánchez, Francisco-Javier Prado-Galbarro, Ramón Hernández-Juan, Edna Rodríguez-Aguirre, Akio Murakami-Ogasawara, Carlos Mejía-Villatoro, Ingrid Y Escobar-Urias, Rodolfo Pinzón-Meza, Juan Miguel Pascale, Yamitzel Zaldivar, Guillermo Porras-Cortés, Carlos Quant-Durán, Ivette Lorenzana, Rita I Meza, Elsa Y Palou, Marvin Manzanero, Rolando A Cedillos, Carmen Aláez, Mark A Brockman, P Richard Harrigan, Chanson J Brumme, Zabrina L Brumme, Santiago Ávila-Ríos, Gustavo Reyes-Terán
Associations between HLA class I alleles and HIV progression in populations exhibiting Amerindian and Caucasian genetic admixture remain understudied. Using univariable and multivariable analyses we evaluated HLA associations with five HIV clinical parameters in 3,213 HIV clade B-infected, ART-naïve individuals from Mexico and Central America (MEX/CAM cohort). A Canadian cohort (HOMER, n = 1622) was used for comparison. As expected, HLA allele frequencies in MEX/CAM and HOMER differed markedly. In MEX/CAM, 13 HLA-A, 24 HLA-B, and 14 HLA-C alleles were significantly associated with at least one clinical parameter...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29664531/-austrian-syndrome-report-of-one-case
#10
Alejandra Salinas G, Juan Contreras R, Fernando Lanas Z, Víctor Neira V, Mauricio Soto, Abelardo Silva, Juan Carlos Bahamondes, Andrés Díaz
No abstract text is available yet for this article.
November 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/29658909/pretreatment-with-argon-protects-human-cardiac-myocyte-like-progenitor-cells-from-oxygen-glucose-deprivation-induced-cell-death-by-activation-of-akt-and-differential-regulation-of-mapkinases
#11
Hong Qi, Lourdes Soto-Gonzalez, Konstantin A Krychtiuk, Sarah Ruhittel, Christoph Kaun, Walter S Speidl, Attila Kiss, Bruno K Podesser, Shanglong Yao, Klaus Markstaller, Klaus U Klein, Verena Tretter
BACKGROUND: The noble gas argon induces cardioprotection in a rabbit model of myocardial ischemia and reperfusion. However, no studies in human primary cells or subjects have been performed so far. We used human cardiac myocyte-like progenitor cells (HCMs) to investigate the protective effect on the cellular level. METHODS: HCMs were pretreated with 30% or 50% argon before oxygen-glucose deprivation (OGD) and reperfusion. We evaluated apoptotic states by flow cytometry and the activation of mitogen-activated protein kinase (MAPKs) members extracellular signal-regulated kinase (ERK), c-jun N-terminal kinase (JNK), p38 MAPkinase, and protein kinase B (Akt) by Westernblot analysis and by activity assays of downstream transcription factors...
May 2018: Shock
https://www.readbyqxmd.com/read/29658159/the-influence-of-developmental-environment-on-courtship-song-in-cactophilic-drosophila
#12
P P Iglesias, E M Soto, I M Soto, B Colines, E Hasson
Closely related species often differ in the signals involved in sexual communication and mate recognition. Determining the factors influencing signal quality (i.e. signal's content and conspicuousness) provides an important insight into the potential pathways by which these interspecific differences evolve. Host specificity could bias the direction of the evolution of sexual communication and the mate recognition system, favoring sensory channels that work best in the different host conditions. In this study, we focus on the cactophilic sibling species Drosophila buzzatii and D...
April 15, 2018: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/29652971/-factors-associated-to-survival-in-patients-with-hiv-tb-in-the-department-of-infectious-diseases-of-the-arzobispo-loayza-national-hospital-per%C3%A3%C2%BA-since-2004-to-2012
#13
Brenda Gamboa-Acuña, Rayza Guillén-Zambrano, Grecia Lizzetti-Mendoza, Alonso Soto, Aldo Lucchetti-Rodríguez
Background The main cause of death in HIV patients is tuberculosis (TB). However, few Latin American studies have evaluated the prognosis of patients with coinfection. Aim To determine the factors associated with survival in patients with HIV-TB coinfection treated at a Peruvian referral hospital. Methods A retrospective cohort study was performed based on clinical records of patients treated at the Department of Infectious Diseases in the Arzobispo Loayza National Hospital from 2004 to 2012. Survival was assessed using the Kaplan-Meier estimator and Cox Proportional Hazard Model...
2018: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29652486/biochemistry-and-molecular-biology-of-flaviviruses
#14
Nicholas J Barrows, Rafael K Campos, Kuo-Chieh Liao, K Reddisiva Prasanth, Ruben Soto-Acosta, Shih-Chia Yeh, Geraldine Schott-Lerner, Julien Pompon, October M Sessions, Shelton S Bradrick, Mariano A Garcia-Blanco
Flaviviruses, such as dengue, Japanese encephalitis, tick-borne encephalitis, West Nile, yellow fever, and Zika viruses, are critically important human pathogens that sicken a staggeringly high number of humans every year. Most of these pathogens are transmitted by mosquitos, and not surprisingly, as the earth warms and human populations grow and move, their geographic reach is increasing. Flaviviruses are simple RNA-protein machines that carry out protein synthesis, genome replication, and virion packaging in close association with cellular lipid membranes...
April 13, 2018: Chemical Reviews
https://www.readbyqxmd.com/read/29651478/halogen-like-properties-of-the-al-13-cluster-mimicking-astatine
#15
B Molina, J R Soto, J J Castro
Astatine-211 is considered to be one of the most promising alpha-emitters in targeted alpha therapy (TAT). However, its development has been hindered by its not so well understood chemistry. Hence, any attempt to understanding it better is imperative. Here, we show through DFT calculations that the neutral endohedral Al13 cluster follows a reactivity pattern very similar to At, more than any other halogen. The halogen and alkali bonding with Al13 and At presented a strong similarity in their charge transfer processes...
April 13, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29650755/thermosensory-perception-regulates-speed-of-movement-in-response-to-temperature-changes-in-drosophila-melanogaster
#16
Andrea Soto-Padilla, Rick Ruijsink, Ody C M Sibon, Hedderik van Rijn, Jean-Christophe Billeter
Temperature influences physiology and behavior of all organisms. For ectotherms, which lack central temperature regulation, temperature adaptation requires sheltering from or moving to a heat source. As temperature constrains the rate of metabolic reactions, it can directly affect ectotherm physiology and thus behavioral performance. This direct effect is particularly relevant for insects whose small body readily equilibrates with ambient temperature. In fact, models of enzyme kinetics applied to insect behavior predict performance at different temperatures, suggesting that thermal physiology governs behavior...
April 12, 2018: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29643844/emerging-roles-of-n-6-methyladenosine-on-hiv-1-rna-metabolism-and-viral-replication
#17
REVIEW
Sebastián Riquelme-Barrios, Camila Pereira-Montecinos, Fernando Valiente-Echeverría, Ricardo Soto-Rifo
N6 -methyladenosine (m6 A) is the most abundant internal modification present in Eukaryotic mRNA. The functions of this chemical modification are mediated by m6 A-binding proteins (m6 A readers) and regulated by methyltransferases (m6 A writers) and demethylases (m6 A erasers), which together are proposed to be responsible of a new layer of post-transcriptional control of gene expression. Despite the presence of m6 A in a retroviral genome was reported more than 40 years ago, the recent development of sequencing-based technologies allowing the mapping of m6 A in a transcriptome-wide manner made it possible to identify the topology and dynamics of m6 A during replication of HIV-1 as well as other viruses...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29627640/genetic-variants-structural-and-functional-changes-of-myelin-protein-zero-and-mannose-binding-lectin-2-protein-involved-in-immune-response-and-its-allelic-transmission-in-families-of-patients-with-leprosy-in-colombia
#18
Viviana Cardona-Pemberthy, Michelle Rendón, Juan Camilo Beltrán, Alejandro Soto-Ospina, Amalia Muñoz-Gomez, Pedronel Araque-Marín, Mauricio Corredor, Gabriel Bedoya, Nora Cardona-Castrod
Leprosy is a chronic infectious disease caused by Mycobacterium leprae. Genetic factors associated with immune response contribute to infection development and disease. M. leprae has the capacity to invade Schwann cells in the peripheral nervous system and cause neuropathy. However, while the responsible molecular mechanisms remain to be fully unveiled, they have begun being elucidated. We studied genetic variants Myelin Protein Zero (MPZ), a major structural component of the myelin sheath, and Mannose Binding Lectin 2 (MBL2), a protein involved in immune response, in 112 family groups of 114 leprosy patients using PCR-RFLP, aiming to calculate the association and allelic transmission of variants associated in first, second and third-degree relatives...
April 5, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29626202/endocrine-disruptors-putting-the-mechanistic-cart-before-the-phenomenological-horse
#19
Ana M Soto, Carlos Sonnenschein
No abstract text is available yet for this article.
April 6, 2018: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/29624681/a-new-species-of-astyanax-characiformes-characidae-from-costa-rica-and-panama-with-a-key-to-the-lower-central-american-species-of-the-genus
#20
A Angulo, A C Santos, M López, F Langeani, C D McMahan
Astyanax anai, a new species of characid fish, is described from the Sixaola River basin, eastern Costa Rica-western Panama, Central America. The new species can be distinguished from all other congeners by the following combination of characters: premaxillary teeth 4-5 at the inner series and 4-6 at the outer series; maxillary teeth tricuspid, 2-4; predorsal scale series irregular and incomplete, with an unscaled space behind tip of supraoccipital process and 12-14 scales; lateral line scales 34-39; humeral region with a conspicuous black and rounded to horizontally ovate spot and two diffuse brown and vertically elongate bars (the first through the rounded to horizontally ovate spot, the second 2-4 scales behind the first); body depth 36...
April 6, 2018: Journal of Fish Biology
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