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Jorge zambrano

Jorge Andrés Carvajal, María José Zambrano, Nur Mónica Theodor, Luis Emilio Moreno, Thiare Rosario Olguín, Paula Sofía Vanhauwaert, Nevenka Belén Rojas, Ana María Delpiano
Many pharmacological agents have been investigated to manage preterm labor; we postulate that a combination of tocolytic drugs may achieve a better effect in the prevention of uterine contractions without dose-dependent adverse effects. The aim of this study was to evaluate the inhibitory effect of dual combinations of tocolytics in vitro. Human myometrium was obtained during elective cesarean sections (term without labor; n = 40). Myometrial strips were placed in organ baths for the measurement of isometric tension...
September 7, 2016: Reproductive Sciences
Robin L Chazdon, Eben N Broadbent, Danaë M A Rozendaal, Frans Bongers, Angélica María Almeyda Zambrano, T Mitchell Aide, Patricia Balvanera, Justin M Becknell, Vanessa Boukili, Pedro H S Brancalion, Dylan Craven, Jarcilene S Almeida-Cortez, George A L Cabral, Ben de Jong, Julie S Denslow, Daisy H Dent, Saara J DeWalt, Juan M Dupuy, Sandra M Durán, Mario M Espírito-Santo, María C Fandino, Ricardo G César, Jefferson S Hall, José Luis Hernández-Stefanoni, Catarina C Jakovac, André B Junqueira, Deborah Kennard, Susan G Letcher, Madelon Lohbeck, Miguel Martínez-Ramos, Paulo Massoca, Jorge A Meave, Rita Mesquita, Francisco Mora, Rodrigo Muñoz, Robert Muscarella, Yule R F Nunes, Susana Ochoa-Gaona, Edith Orihuela-Belmonte, Marielos Peña-Claros, Eduardo A Pérez-García, Daniel Piotto, Jennifer S Powers, Jorge Rodríguez-Velazquez, Isabel Eunice Romero-Pérez, Jorge Ruíz, Juan G Saldarriaga, Arturo Sanchez-Azofeifa, Naomi B Schwartz, Marc K Steininger, Nathan G Swenson, Maria Uriarte, Michiel van Breugel, Hans van der Wal, Maria D M Veloso, Hans Vester, Ima Celia G Vieira, Tony Vizcarra Bentos, G Bruce Williamson, Lourens Poorter
Regrowth of tropical secondary forests following complete or nearly complete removal of forest vegetation actively stores carbon in aboveground biomass, partially counterbalancing carbon emissions from deforestation, forest degradation, burning of fossil fuels, and other anthropogenic sources. We estimate the age and spatial extent of lowland second-growth forests in the Latin American tropics and model their potential aboveground carbon accumulation over four decades. Our model shows that, in 2008, second-growth forests (1 to 60 years old) covered 2...
May 2016: Science Advances
Oscar Martínez-Santiago, Yovani Marrero-Ponce, Stephen J Barigye, Huong Le Thi Thu, F Javier Torres, Cesar H Zambrano, Jorge L Muñiz Olite, Maykel Cruz-Monteagudo, Ricardo Vivas-Reyes, Liliana Vázquez Infante, Luis M Artiles Martínez
This report examines the interpretation of the Graph Derivative Indices (GDIs) from three different perspectives (i.e., in structural, steric and electronic terms). It is found that the individual vertex frequencies may be expressed in terms of the geometrical and electronic reactivity of the atoms and bonds, respectively. On the other hand, it is demonstrated that the GDIs are sensitive to progressive structural modifications in terms of: size, ramifications, electronic richness, conjugation effects and molecular symmetry...
2016: International Journal of Molecular Sciences
Martha L Chadid, Jorge Carpio, Pedro Valdivieso, Milton Zambrano, Javier García-Ferreyra, Pedro Valdivieso-Mejía
OBJECTIVE: Establish the number of metaphase II oocytes that are needed for optimum blastulation rate and to achieve a better rate of gestation. METHODS: Retrospective study. Women diagnosed with infertility. There were 110 women submitted to IVF/ICSI, excluding third day transfers and those with canceled cycles. After controlled ovarian stimulation, cultivation continued to blastocysts. RESULTS: Average age of the patients: 33.41. IVF technique: 73 patients, 66...
2015: JBRA Assisted Reproduction
Jorge Jesús Veloz, Nicolás Saavedra, Marysol Alvear, Tomás Zambrano, Leticia Barrientos, Luis A Salazar
Tooth decay is an infectious disease, whose main causative agent identified is Streptococcus mutans (S. mutans). Diverse treatments have been used to eradicate this microorganism, including propolis. To date, it has been shown that polyphenols from Chilean propolis inhibit S. mutans growth and biofilm formation. However, the molecular mechanisms underlying this process are unclear. In the present study, we assessed the effect of Chilean propolis on the expression and activity of the glycosyltransferases enzymes and their related genes...
2016: BioMed Research International
Lourens Poorter, Frans Bongers, T Mitchell Aide, Angélica M Almeyda Zambrano, Patricia Balvanera, Justin M Becknell, Vanessa Boukili, Pedro H S Brancalion, Eben N Broadbent, Robin L Chazdon, Dylan Craven, Jarcilene S de Almeida-Cortez, George A L Cabral, Ben H J de Jong, Julie S Denslow, Daisy H Dent, Saara J DeWalt, Juan M Dupuy, Sandra M Durán, Mario M Espírito-Santo, María C Fandino, Ricardo G César, Jefferson S Hall, José Luis Hernandez-Stefanoni, Catarina C Jakovac, André B Junqueira, Deborah Kennard, Susan G Letcher, Juan-Carlos Licona, Madelon Lohbeck, Erika Marín-Spiotta, Miguel Martínez-Ramos, Paulo Massoca, Jorge A Meave, Rita Mesquita, Francisco Mora, Rodrigo Muñoz, Robert Muscarella, Yule R F Nunes, Susana Ochoa-Gaona, Alexandre A de Oliveira, Edith Orihuela-Belmonte, Marielos Peña-Claros, Eduardo A Pérez-García, Daniel Piotto, Jennifer S Powers, Jorge Rodríguez-Velázquez, I Eunice Romero-Pérez, Jorge Ruíz, Juan G Saldarriaga, Arturo Sanchez-Azofeifa, Naomi B Schwartz, Marc K Steininger, Nathan G Swenson, Marisol Toledo, Maria Uriarte, Michiel van Breugel, Hans van der Wal, Maria D M Veloso, Hans F M Vester, Alberto Vicentini, Ima C G Vieira, Tony Vizcarra Bentos, G Bruce Williamson, Danaë M A Rozendaal
Land-use change occurs nowhere more rapidly than in the tropics, where the imbalance between deforestation and forest regrowth has large consequences for the global carbon cycle. However, considerable uncertainty remains about the rate of biomass recovery in secondary forests, and how these rates are influenced by climate, landscape, and prior land use. Here we analyse aboveground biomass recovery during secondary succession in 45 forest sites and about 1,500 forest plots covering the major environmental gradients in the Neotropics...
February 11, 2016: Nature
Francisco Gerardo Yanowsky-Escatell, Leonardo Pazarín-Villaseñor, Jorge Andrade-Sierra, Miguel Angel Zambrano-Velarde, Francisco Martin Preciado-Figueroa, Christian Jesús Santana-Arciniega, Rogelio Ignacio Galeno-Sánchez
INTRODUCTION: serum albumin the biomarker most frequently used as one of three biochemical criteria for diagnosis of protein energy wasting (PEW). However, as a nutritional parameter it's unreliable in chronic kidney disease (CKD). The subjective global assessment (SGA) has been recommended for nutritional evaluation and the PEW in CKD. OBJECTIVE: determine association between the levels of serum albumin and SGA in patients with end stage renal disease (ESRD) who started peritoneal dialysis (PD)...
2015: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
Oscar H Del Brutto, Robertino M Mera, Jorge Macias, Gabriela Morales, Mauricio Zambrano
All studies attempting to find an association between vitamin D deficiency and cerebrovascular diseases have been conducted at latitudes far away from the Equator, where living conditions, cardiovascular risk factors, and sunshine exposure are different from tropical regions. We aimed to assess cerebrovascular correlates of vitamin D deficiency in community-dwelling older adults living in Atahualpa, a village located in rural coastal Ecuador. Out of 267 individuals enrolled in the neuroimaging substudy of the Atahualpa Project, 220 (82%) signed the informed consent...
December 2015: International Journal of Stroke: Official Journal of the International Stroke Society
Laura Rodríguez-Osorio, Diana Pazmiño Zambrano, Carolina Gracia-Iguacel, Jorge Rojas-Rivera, Alberto Ortiz, Jesus Egido, Emilio González Parra
Sevelamer is a non-calcium phosphate binder used in advanced chronic kidney disease (CKD) and in dialysis for hyperphosphataemia control. Several experimental, observational studies and clinical trials have shown that sevelamer has pleiotropic effects, beyond hyperphosphataemia control, including actions on inflammation, oxidative stress, lipid profile and atherogenesis, vascular calcification, endothelial dysfunction and the reduction of several uremic toxins. This is the biological basis for its global effect on cardiovascular morbidity and mortality in patients with chronic kidney disease...
2015: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
Luis Leyton, Melissa Hott, Francisca Acuña, Jorge Caroca, Magdalena Nuñez, Carolina Martin, Angara Zambrano, Margarita I Concha, Carola Otth
Herpes simplex virus type-1 (HSV-1) is ubiquitous and is able to establish a lifelong persistent latent infection in neurons of infected individuals. It has been estimated that in approximately 70% of the population over 50 years old, the virus enters the brain and infects neurons, and possibly undergoes recurrent reactivation episodes during lifetime, especially in immunodepressed individuals. We previously showed that the sensors AMP-dependent kinase (AMPK) and Sirtuin 1 (Sirt1), involved in survival pathways and neuroprotection, were affected during the course of HSV-1 infection...
July 2, 2015: Virus Research
Jorge E Valdez-García, Julio C Hernandez-Camarena, Rosa Martínez-Muñoz
The purpose of this study was to evaluate the correlation of important risk factors for LASIK retreatment and the retreatment rate. A retrospective cohort study was conducted. Records of patients who underwent LASIK between January 2011 and January 2012 at the Zambrano-Hellion Medical Center, Tec de Monterrey (México), and posteriorly underwent LASIK retreatment were identified and risk factors to receive retreatment were assessed using relative risk. Main outcomes were retreatment rate, risk factors for retreatment, and uncorrected distance visual acuity (UDVA)...
February 2016: International Ophthalmology
Yadira Díaz-Aguila, Francisco Castelán, Estela Cuevas, Elena Zambrano, Margarita Martínez-Gómez, Alvaro Muñoz, Jorge Rodríguez-Antolín, Leticia Nicolás-Toledo
Consumption of sugar-sweetened beverages promotes the development of metabolic syndrome (MetS) and type 2 diabetes mellitus in humans. One factor related to the appearance of MetS components is the dysfunction of the adrenal gland. In fact, the experimental generation of hyperglycemia has been associated with morphological and microvascular changes in the adrenal glands of rats. We hypothesized that high sucrose consumption from infancy promotes histological disruption of the adrenal glands associated with the appearance of metabolic syndrome indicators...
March 2016: Anatomical Science International
Jorge A Huete-Pérez, Pedro J J Alvarez, Jerald L Schnoor, Bruce E Rittmann, Anthony Clayton, Maria L Acosta, Carlos E M Bicudo, Mary T K Arroyo, Michael T Brett, Victor M Campos, Hernan Chaimovich, Blanca Jimenez-Cisneros, Alan Covich, Luiz D Lacerda, Jean-Michel Maes, Julio C Miranda, Salvador Montenegro-Guillén, Manuel Ortega-Hegg, Gerald R Urquhart, Katherine Vammen, Luis Zambrano
Seeking economic growth and job creation to tackle the nation's extreme poverty, the Nicaraguan government awarded a concession to build an interoceanic canal and associated projects to a recently formed Hong Kong based company with no track record or related expertise. This concession was awarded without a bidding process and in advance of any feasibility, socio-economic or environmental impact assessments; construction has begun without this information. The 278 km long interoceanic canal project may result in significant environmental and social impairments...
April 7, 2015: Environmental Science & Technology
María Aubá Guedea, Juan Luis Alcázar Zambrano, Jorge Baixauli Fons, Leire Juez Viana, Begoña Olartecoechea Linaje, Jose Ángel Mínguez Milio
INTRODUCTION AND HYPOTHESIS: The prevalence of levator avulsion after vaginal delivery ranges from 10 to 30 %. To our knowledge, no previous studies have used anorectal manometry (AM) to assess this injury's impact on the functionality of the anal sphincter complex. We hypothesized that women with levator avulsion have lower manometric pressures. METHODS: A prospective observational study was conducted on 83 women, 61 in the birth group and 22 in the control group...
July 2015: International Urogynecology Journal
Ramsés Morales-Zambrano, Luis A Bautista-Herrera, Ulises De la Cruz-Mosso, Guadalupe D Villanueva-Quintero, Jorge R Padilla-Gutiérrez, Yeminia Valle, Isela Parra-Rojas, Héctor Rangel-Villalobos, Sergio R Gutiérrez-Ureña, José F Muñoz-Valle
Psoriatic arthritis (PsA) is an autoimmune disease with a complex interaction of gene and with a dysregulation of pro-inflammatory cytokine such as Macrophage migration Inhibitory Factor (MIF) and Tumor Necrosis Factor-alpha (TNFα). Two polymorphisms identified in the promoter region of the MIF gene have been described: the STR-794 CATT5-8 (rs5844572) and the SNP-173 G>C (rs755622), which are associated with increased MIF levels in circulation and with autoimmune diseases in several populations. In this case-control study we investigated whether commonly occurring functional MIF polymorphisms are associated with PsA susceptibility and clinical variables as well as with MIF and TNFα serum levels in a Mexican-Mestizo population...
2014: International Journal of Clinical and Experimental Medicine
Jorge O Alarcón-Villaverde, Franco Romani-Romani, Romina A Tejada, Paolo Wong-Chero, Manuel Céspedes-Zambrano
OBJECTIVES: To estimate the seroprevalence of leptospirosis in rice farmers of the Alto Mayo Valley in the Peruvian region of San Martín and to identify factors associated with infection. MATERIALS AND METHODS: A cross-sectional study was conducted between October and November of 2010 on a sample of 254 farmers from eleven irrigation committees in the Alto Mayo Valley. A blood sample was collected as well as sociodemographic, household and labor characteristics in the form of a questionnaire...
April 2014: Revista Peruana de Medicina Experimental y Salud Pública
Juan G Rodríguez, Adriana C Hernández, Cecilia Helguera-Repetto, Diana Aguilar Ayala, Rosalina Guadarrama-Medina, Juan M Anzóla, Jose R Bustos, María M Zambrano, Jorge González-Y-Merchand, María J García, Patricia Del Portillo
UNLABELLED: Strong evidence supports the idea that fatty acids rather than carbohydrates are the main energy source of Mycobacterium tuberculosis during infection and latency. Despite that important role, a complete scenario of the bacterium's metabolism when lipids are the main energy source is still lacking. Here we report the development of an in vitro model to analyze adaptation of M. tuberculosis during assimilation of long-chain fatty acids as sole carbon sources. The global lipid transcriptome revealed a shift toward the glyoxylate cycle, the overexpression of main regulators whiB3, dosR, and Rv0081, and the increased expression of several genes related to reductive stress...
2014: MBio
Alma Delia Medina-Jaime, Francianella Reyes-Vargas, Victoria Martinez-Gaytan, Graciela Zambrano-Galvan, Eduardo Portillo-Delcampo, Jorge Alberto Burciaga-Nava, Miguel Reyes-Romero, Antonio Sifuentes-Alvarez
The aim of this work was to analyze methylation of the promoter sites of the ESR1 and PGR genes and to determine correlations with immunohistochemical expression of estrogen and progesterone receptors in ductal and lobular breast cancers. An observational, descriptive, molecular study was conducted on 20 ductal and 20 lobular breast cancer samples with immunohistochemical determination of estrogen and progesterone receptor expression. The methylation analysis of ESR1 and PGR promoter sites was carried-out by methylation-specific PCR...
2014: Asian Pacific Journal of Cancer Prevention: APJCP
Andrés M Acevedo, Alexandra Gómez, Henry A Becerra, Ana P Ríos, Paula C Zambrano, Evelyn P Obando, Arturo J Martí-Carvajal, Hernán Carranza, Carlos A Vargas, Jorge M Otero, Ludovic Reveiz, Andrés F Cardona
BACKGROUND: Although hematology and oncology research is a highly relevant and evolving field, research contributions by Latin American countries, apart from Brazil, remain unclear. METHODS: The authors performed a bibliometric analysis through a methodical search of the Latin American abstracts presented at 4 main hematology and oncology annual scientific meetings from 2000 to 2010. Latin American regional and national productivity was described through distribution and trend analyses; the subsequent percentage of full-text publications was also determined...
April 15, 2014: Cancer
Amparo M Martínez, Luis T Gama, Javier Cañón, Catarina Ginja, Juan V Delgado, Susana Dunner, Vincenzo Landi, Inmaculada Martín-Burriel, M Cecilia T Penedo, Clementina Rodellar, Jose Luis Vega-Pla, Atzel Acosta, Luz A Alvarez, Esperanza Camacho, Oscar Cortés, Jose R Marques, Roberto Martínez, Ruben D Martínez, Lilia Melucci, Guillermo Martínez-Velázquez, Jaime E Muñoz, Alicia Postiglioni, Jorge Quiroz, Philip Sponenberg, Odalys Uffo, Axel Villalobos, Delsito Zambrano, Pilar Zaragoza
BACKGROUND: American Creole cattle presumably descend from animals imported from the Iberian Peninsula during the period of colonization and settlement, through different migration routes, and may have also suffered the influence of cattle directly imported from Africa. The introduction of European cattle, which began in the 18th century, and later of Zebu from India, has threatened the survival of Creole populations, some of which have nearly disappeared or were admixed with exotic breeds...
2012: PloS One
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