Iago Quintana, Diego Peña, Dolores Pérez, Enrique Guitián,
Abstract An improved method to generate 1,2‐cyclohexadienes by fluoride‐induced β‐elimination of 6‐(trimethylsilyl)cyclohexenyl triflates is presented. This method allows the generation of these highly strained cyclic allenes in good yields and under mild reaction conditions, as demonstrated by trapping experiments based on cycloaddition reactions. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)
Tópico(s): Asymmetric Synthesis and Catalysis
2009 - Wiley | European Journal of Organic Chemistry
Carolina Gemma, Silvia Sookoian, Jorge Alvariñas, Silvia García, Laura Quintana, Diego Kanevsky, Claudio González, Carlos J. Pirola,
We explored peroxisome proliferator‐activated receptor‐γ co‐activator 1α gene (PPARGC1A), peroxisome proliferator‐activated receptor‐γ gene (PPARG), and transcription factor A mitochondrial gene ( Tfam ) promoter DNA methylation in newborns between both extremes of abnormal fetal growth: Small (SGA) and large for gestational age (LGA) in relation to the mother's characteristics. We further sought for the association of rs9930506 variant at FTO gene and the promoter patterns of DNA methylation in the aforementioned ...
Tópico(s): Epigenetics and DNA Methylation
2009 - Wiley | Obesity
Philipp Wiedemann, Jean‐Sébastien Guez, Hans B. Wiegemann, Florian Egner, Juan Carlos Quintana, Diego Asanza-Maldonado, Marcos Filipaki, Jeff Wilkesman, Christian Schwiebert, Jean‐Philippe Cassar, Pascal Dhulster, Hajo Suhr,
Current state of the art to determine the viability of animal cell suspension cultures is based on sampling and subsequent counting using specific staining assays. We demonstrate for the first time a noninvasive in situ imaging cytometry capable of determining the statistics of a morphologic transition during cell death in suspension cultures. To this end, we measure morphometric inhomogeneity--defined as information entropy--in cell in situ micrographs. We found that the cells are partitioned into ...
Tópico(s): Viral Infectious Diseases and Gene Expression in Insects
2011 - Wiley | Biotechnology and Bioengineering
Joel Omar Jáquez Quintana, Diego García‐Compeán, Jose A. Gonzalez, Jesús Zacarías Villarreal‐Pérez, Fernando Javier Lavalle González, Linda E. Muñoz-Espinosa, Pedro López Hernández, Erick Reyes Cabello, Edgar Redondo Villarreal, Ricardo Flores Rendón, Héctor Jesús Maldonado-Garza,
It has been suggested that DM may reduce survival of patients with liver cirrhosis (LC). Nevertheless only few prospective studies assessing the impact of DM on mortality of cirrhotic patients have been published, none in compensated LC.(i) to study the impact of DM on mortality and (ii) to identify predictors of death.Patients with compensated LC with and without DM were studied. Survival was analyzed by the Kaplan-Meier Method. Univariate and multivariate analysis was performed to determine independent ...
Tópico(s): Alcohol Consumption and Health Effects
2011 - Elsevier BV | Annals of Hepatology
Manuel Fernando Mazorra, Ángela Patricia Quintana, Diego Miranda, Gerhard Fischer, Martha Chaparro de Valencia,
The anatomical changes in reproductive structures were observed and described frrom button to mature fruit and the phenological states and the structural development of the Cape gooseberry fruit, ecotype Colombia, were established settled down. This investigation was made in a commercial Cape gooseberry (Physalis peruviana) orchard located in the municipality of Granada, Cundinamarca, Colombia. The study confirmed that anatomically the Cape gooseberry fruits, ecotipo Colombia, and ruderal type are ...
Tópico(s): Phytochemicals and Medicinal Plants
2006 - National University of Colombia | Acta Biológica Colombiana
Carolina Gemma, Silvia Sookoian, Jorge Alvariñas, Silvia García, Laura Quintana, Diego Kanevsky, Claudio González, Carlos J. Pirola,
To investigate whether mitochondrial DNA (mtDNA) content may be associated with clinical features, anthropometric variables, and laboratory findings in both extremes of abnormal fetal growth: small and large size for gestational age.Eighty-eight pregnant women and their infants were included in a cross-sectional study. According to the offspring birthweight, normalized by sex and gestational age, there were 57 newborns with appropriate weight for gestational age (AGA) and 31 with abnormal weight for ...
Tópico(s): Pregnancy and preeclampsia studies
2006 - Wiley | Obesity
Roberto C. Bochicchio, Ramón Alain Miranda‐Quintana, Diego Rial,
Grand-canonical like descriptions of many electron atomic and molecular open systems which are characterized by a non-integer number of electrons are presented. Their associated reduced density matrices (RDMs) are obtained by introducing the contracting mapping for this type of distributions. It is shown that there is loss of information when connecting RDMs of different order by partial contractions. The energy convexity property of these systems simplifies the description. Consequently, this formulation ...
Tópico(s): Advanced Chemical Physics Studies
2013 - American Institute of Physics | The Journal of Chemical Physics
Manuel Alonso Dos Santos, René Quilodrán Ulloa, Álvaro Salgado Quintana, Diego Vigueras Quijada, Pablo Farías,
Guideline Daily Amount (GDA) and nutrition tables are the most used front-of-pack (FOP) nutrition labeling schemes in the world; however, they are hard to process considering the nutritional knowledge, effort, and time needed for interpretation. Consumers spend little time and effort evaluating food products. Consumers are selective, and FOP nutrition labeling schemes should be too. Recent studies have shown that warning messages—a new FOP nutrition labeling scheme—improves consumers’ ability to correctly ...
Tópico(s): Multisensory perception and integration
2019 - Multidisciplinary Digital Publishing Institute | Sustainability
Elena Muñoz Marrón, Raquel Viejo-Sobera, M. Quintana, Diego Redolar-Ripoll, Daniel Rodríguez, Maite Garolera,
Abstract Objective Alzheimer’s disease is a major health problem in our society. To date, pharmacological treatments have obtained poor results and there is a growing interest in finding non-pharmacological interventions for this disease. Transcranial magnetic stimulation (TMS) is a non-invasive technique that is able to induce changes in brain activity and long-term modifications in impaired neural networks, becoming a promising clinical intervention. Our goal is to study the benefit of individualized ...
Tópico(s): Stroke Rehabilitation and Recovery
2018 - BioMed Central | BMC Research Notes
Christian Barrientos, Yasmín Quintana, Diego J. Elías, Rocío Rodiles‐Hernández,
La ictiofauna nativa de la cuenca del río Usumacinta se documentó en el noroeste de Guatemala para conocer la composición de los peces nativos en 20 sitios y su importancia en la pesca artesanal. El estudio incluyó recolecta de las especies con diversas artes de pesca, evaluación de abundancia de las especies mediante muestreos en transectos e identificación de las mismas en los mercados de venta, y en entrevistas con pescadores. Se identificó un total de 54 especies, 38 géneros, 18 familias y 8 ...
Tópico(s): Fish biology, ecology, and behavior
2018 - National Autonomous University of Mexico | Revista Mexicana de Biodiversidad
Somaris E. Quintana, Diego Martín Hernández, David Villanueva-Bermejo, Mónica R. García‐Risco, Tiziana Fornari,
Supercritical anti-solvent precipitation (SAS) using carbon dioxide is a novel technique that can be used to produce powdered ingredients in small size particles, facilitating their incorporation into food matrices. In this work, the SAS precipitation of a licorice root ethanolic extract was studied. SAS assays were carried out at 15–20 MPa, 308.15 and 313.15 K, and two different concentrations (9.6 and 14.2 mg/ml) of the ethanolic licorice extract. In the range of conditions investigated, SAS pressure ...
Tópico(s): Herbal Medicine Research Studies
2020 - Elsevier BV | LWT
Produção Nacional
Revisado por pares
Matheus Santos Cerqueira, Paulo R. S. Amorim, Irismar Gonçalves Almeida da Encarnação, Leonardo Mateus Teixeira de Rezende, Paulo Henrique Ribeiro Fernandes Almeida, Analiza M. Silva, Manuel Sillero‐Quintana, Diego Augusto Santos Silva, Fernanda Karina dos Santos, João Carlos Bouzas Marins,
Assessing the body composition of children and adolescents is important to monitor their health status. Anthropometric measurements are feasible and less-expensive than other techniques for body composition assessment. This study aimed to systematically map anthropometric equations to predict adipose tissue, body fat, or density in children and adolescents, and to analyze methodological aspects of the development of anthropometric equations using skinfolds. A scoping review was carried out following ...
Tópico(s): Thermoregulation and physiological responses
2022 - Springer Science+Business Media | Eating and Weight Disorders - Studies on Anorexia Bulimia and Obesity
Philipp Wiedemann, Markus Worf, Hans B. Wiegemann, Florian Egner, Christian Schwiebert, Jeff Wilkesman, Jean‐Sébastien Guez, Juan Carlos Quintana, Diego Assanza, Hajo Suhr,
BackgroundTwo of the key parameters to be monitored during cellcultivation processes are cell concentration and viability.Until today, this is very often done off-line by sterilesampling and subsequent counting using a hemocyt-ometer or an electronic cell counter. Cell biology lacks ameasurable quantity by which single cells in suspensioncan be non-invasively diagnosed as dead or alive. How-ever, it would be of significance for process monitoringand in the light of initiatives like PAT if cell density ...
Tópico(s): Cell Image Analysis Techniques
2011 - BioMed Central | BMC Proceedings
Carlos Vaccaro, Víctor Im, Gustavo Rossi, Guillermo Ojea Quintana, Mario Benati, Diego Pérez de Arenaza, Fernando Bonadeo,
PURPOSE: This study was designed to assess the prognostic value of the lymph node ratio in patients with colon cancer treated by colorectal specialists. METHODS: Three hundred and sixty-two Stage III consecutive cases were analyzed based on quartiles: lymph node ratio 1 (>0 and 0.12 and <0.25); lymph node ratio 4 (≥0.25). RESULTS: Disease-free survival rates were: lymph node ratio 1, 75.5%; lymph node ratio 2, 74.2%; lymph node ratio 3, 73.2%; and lymph node ratio 4, 40.1%. Similar differences were observed ...
Tópico(s): Gastric Cancer Management and Outcomes
2009 - Lippincott Williams & Wilkins | Diseases of the Colon & Rectum
Antonio Valentı́n, N. Hernando-Quintana, J. Moles-Herbera, Diego Jiménez‐Jiménez, S. Mourente, Ishel Farid Malik, Richard Selway, Gonzalo Alarcón,
To study retrospectively the impact of electrode modality (subdural or depth electrodes) during presurgical assessment on surgical outcome after temporal lobectomy. The study included 17 patients assessed with depth electrodes and 57 with bitemporal subdural strips. MRI showed a larger proportion of bilateral pathology in patients undergoing depth recordings (29.41% versus 3.5%, p = 0.00069). Among the operated patients, those undergoing depth electrode recordings showed better outcome at one year after ...
Tópico(s): Pharmacological Effects and Toxicity Studies
2016 - Elsevier BV | Clinical Neurophysiology
Pablo Yorio, Flavio Quintana, Patricia Dell’Arciprete, Diego González-Zevallos,
Summary Assessing human activities and understanding their interaction with seabirds constitute important steps in the development of adequate conservation planning schemes. We evaluated the spatial use of the marine environment by foraging Magellanic Penguins Spheniscus magellanicus and Imperial Cormorants Phalacrocorax atriceps breeding at a newly designated marine park in Golfo San Jorge, Argentina, to assess the potential spatial conflict between these seabirds and commercial hake and shrimp ...
Tópico(s): Marine and coastal plant biology
2010 - Cambridge University Press | Bird Conservation International
Iago Quintana, Arnold J. Boersma, Diego Peña, Dolores Pérez, Enrique Guitián,
Cotrimerization of arynes and electron-deficient alkenes selectively affords dihydrophenanthrenes or ortho-olefinated biaryls, depending on the catalytic system employed. Our findings support a mechanism involving benzyne and a metallacycloheptadiene as key intermediates.
Tópico(s): Chemical Reactions and Mechanisms
2006 - American Chemical Society | Organic Letters
During the 80s and 90s in Mexico there was a boost in participatory strategies developed, in order to solve serious deficiencies in community development programmes and projects. The mere existence of such methodologies, per se, does not guarantee the conscious and voluntary participation of rural inhabitants. The social energy mobilisation of the rural communities poses a great demand on those who monitor or implement participatory strategies: they have to take into consideration, among others, ...
Tópico(s): Education in Rural Contexts
2004 - Taylor & Francis | The Journal of Agricultural Education and Extension
Luis Reinoso Barbero, María‐Fernanda González‐Gómez, Diego Bélanger‐Quintana, Montserrat Piñaga‐Solé, Miguel Fernández‐ Fernández, M.C. Garrido-Astray, Ana Capapé‐Aguilar, Aranzazu Mota‐Olmeda, Ramón Díaz‐Garrido, Félix Gómez‐Gallego, Fernando Bandrés, Javier Sanz‐González,
Case‐control Study of Semicircular Lipoatrophy, a New Occupational Disease in Office Workers: Luis REINOSO‐BARBERO, et al . Occupational Medicine. Grupo Banco Popular (GBP), Spain— Objectives Semicircular lipoatrophy (SL) is an emerging occupational pathology. Its etiology is poorly understood. We intend to establish the probable risk factors and estimate the relative risk. Methods A case‐control study was performed. Our company had 55 diagnosed cases. As controls, we used the 3 closest healthy coworkers ...
Tópico(s): Vitamin C and Antioxidants Research
2013 - Wiley | Journal of Occupational Health
Produção Nacional
Revisado por pares
Tiane Ferreira de Castro, Antônio Sérgio Varela, Francine Ferreira Padilha, Daniela Droppa-Almeida, Graciela Quintana Saalfeld, Diego Martins Pires, Jéssica Ribeiro Pereira, Carine Dahl Corcini, Elton Pinto Colares,
Tópico(s): Microplastics and Plastic Pollution
2019 - Springer Science+Business Media | Environmental Science and Pollution Research
<p>El gobierno de México ha promovido la instalación de parques eólicos,<br />argumentando que es una energía limpia (cualidad, parcialmente cierta). La estrategia gubernamental de implantación ha favorecido a corporaciones transnacionales, en contra de las comunidades originarias que están perdiendo el<br />control sobre sus territorios, mismos que han sido ocupados por estas empresas, provocando un deterioro ecológico, social, político y cultural. En el Istmo de Tehuantepec, una parte significativa ...
Tópico(s): Social Acceptance of Renewable Energy
2018 - Elsevier BV | Problemas del Desarrollo Revista Latinoamericana de Economía
Rodrigo Moreta‐Herrera, Daniela Alejandra Bonilla Yucailla, Erika Ruperti Lucero, Daniel Gavilanes Gómez, Joselyn Zambrano-Estrella, Diego Vaca‐Quintana, Sergio Domínguez‐Lara,
Objective: To analyse the internal structure of the 28-item version of the General Health Questionnaire (GHQ-28), as well as its reliability and validity in relation to other variables in a sample of Ecuadorian university students. Method: Instrumental design with confirmatory factor analysis using weighted least square mean and variance adjusted (WLSMV) estimator, reliability and convergence and discrimination validity of the GHQ-28. Sample: 495 students (56.6% women), between 18 to 35 years old (M = ...
Tópico(s): Health and Lifestyle Studies
2021 - University of Rijeka | Psihologijske teme
Pilar Rodríguez‐Rodríguez, Ángel L. López de Pablo, Concha F. García‐Prieto, Beatriz Somoza, Begoña Quintana-Villamandos, José Juan Gómez de Diego, Perla Yareli Gutiérrez-Arzapalo, David Ramiro‐Cortijo, M. Carmen González, Silvia M. Arribas,
Fetal undernutrition is a risk factor for heart disease in both genders, despite the protection of women against hypertension development. Using a rat model of maternal undernutrition (MUN) we aimed to assess possible sex differences in the development of cardiac alterations and the implication of hypertension and cardiac oxidative stress.Male and female offspring from rats fed ad libitum (control) or with 50% of the normal daily intake during the second half of gestation (MUN) were used. Heart weight/ ...
Tópico(s): Diet and metabolism studies
2017 - Public Library of Science | PLoS ONE
Ramiro Pablo López, Sergio Valdivia, Ninel Sanjinés, Diego de la Quintana,
Tópico(s): Plant Parasitism and Resistance
2007 - Springer Science+Business Media | Oecologia
Alfredo Aguilera Bazán, Juan Gómez Rivas, Luis Miguel Quintana Franco, José Quesada-Olarte, Diego M. Carrión, Luis Martínez‐Piñeiro,
The incidence of ureteral damage during abdominal surgery is 0.05).The occurrence of ureteral injury during abdominal surgery is low. Immediate repair is preferred when feasible, but delayed recognition of the injury is more common. We found no difference between immediate and deferred repair in terms of success rates.
Tópico(s): Kidney Stones and Urolithiasis Treatments
2019 - | Editor-in-Chief s Voice List of Authors is an Important Element in a Scientific Publication
Ana Mendigutía-Gómez, María T Quintana-García, Miriam Martín-Sevilla, Diego de Lorenzo-Barrientos, Jorge Rodríguez‐Jiménez, César Fernández‐de‐las‐Peñas, José L. Arias‐Buría,
Objectives: To determine the presence of post-needling induced pain in subjects who had suffered a stroke and received trigger point (TrP) dry needling (DN), and to investigate the effects of including TrP-DN into a rehabilitation program for shoulder pain in this population. Methods: A randomized clinical trial was conducted. Sixteen patients who had suffered a stroke and presented with shoulder pain were randomly assigned to receive rehabilitation alone or rehabilitation combined with DN. Both groups ...
Tópico(s): Botulinum Toxin and Related Neurological Disorders
2020 - SAGE Publishing | Acupuncture in Medicine
Deborah Lawrence, Henricus F. M. Vester, Diego R. Pérez‐Salicrup, J. Ronald Eastman, B. L. Turner, Jacqueline Geoghegan,
... Vester El Colegio De La Frontera Sur Unidad Quintana Roo, Chetumal, MéxicoSearch for more papers by this authorDiego Pérez-Salicrup, Diego Pérez-Salicrup Centro De Investigaciones En Ecosistemas, Universidad ... Vester El Colegio De La Frontera Sur Unidad Quintana Roo, Chetumal, MéxicoSearch for more papers by this authorDiego Pérez-Salicrup, Diego Pérez-Salicrup Centro De Investigaciones En Ecosistemas, Universidad ...
Tópico(s): Land Use and Ecosystem Services
2004 - American Geophysical Union | Geophysical monograph
Produção Nacional
Revisado por pares
Álvaro López‐Samanes, Alberto Pérez‐López, Víctor Moreno-Pérez, Fábio Yuzo Nakamura, Jorge Acebes-Sánchez, Iñaki Quintana-Milla, Antonio Jesús Sánchez-Oliver, Diego Moreno‐Pérez, Valentín E. Fernández-Elías, Raúl Domínguez,
Beetroot juice (BJ) contains high levels of inorganic nitrate (NO3-) and its intake has good evidence in increasing blood nitrate/nitrite concentrations. The ingestion of BJ has been associated with improvements in physical performance of endurance sports, however the literature in intermittent sports is scarce. The aim of this study was to investigate whether BJ could improve physical performance in tennis players. Thirteen well-trained tennis players (25.4 ± 5.1 years) participated in the study during ...
Tópico(s): Pharmacology and Obesity Treatment
2020 - Multidisciplinary Digital Publishing Institute | Nutrients
This work deals with accumulation by dispossession, a process by which multinational corporations engaged in open-pit mining have availed themselves of the lands of farmers and indigenous peoples. Specifically, it is concerned with legislative, political and ideological factors, as well as the abuse of authority brought on by the current situation, in which nearly 17% of the national territory was under concession to these companies as of 2013. This is an attack on the communities and territories ...
Tópico(s): Extractivism and Socioeconomic Issues
2014 - Elsevier BV | Problemas del Desarrollo Revista Latinoamericana de Economía
Nayeli Rodríguez‐Fuentes, Luz Eugenia Alcántara-Quintana, Diego F. Hernández‐Ramírez, María C. Piña-Barba, José Manuel Cervantes‐Uc, Carlos A. Núñez‐Álvarez, Javier R. Ambrosio,
BACKGROUND: Bovine bone matrix is a natural material that has been used in the treatment of bone lesions. In this study, bovine bone matrix Nukbone® (NKB) was investigated due its osteoconductive and osteoinductive properties. This biomaterial induces CBFA-1 activation and osteogenic differentiation, although the cytokines involved in these processes is still unknown. OBJECTIVE: The aim of this work was to determine the influence of NKB on the pro-osteoblastic and anti-osteoblastic cytokines secretion ...
Tópico(s): Bone Tissue Engineering Materials
2021 - IOS Press | Bio-Medical Materials and Engineering