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Search Results: 1 - 10 of 69477 matches for " Alejandro Antonio González;Flores "
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Diversidad genética en cerdos criollos mexicanos con genes candidatos asociados a características productivas
Sarabia, Alejandro Antonio González;Flores, Clemente Lemus;Martínez, Karina Mejía;Carpena, Javier Germán Rodríguez;Benítez, Maria Guadalupe Orozco;Serrano, Alberto Barreras;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000100006
Abstract: the aim of this study was to compare the genetic variability and diversity, and genetic distances between mexican creole pigs - pelón mexicano (cpm) and cuinos (cc) - with the commercial breed yorkshire for the candidate genes cast, decr1, hal, hfabp4, lep, lipe, mcr4, myog, rn and chx, using the pcr-rflp technique. one hundred eighty pigs (59 cpm, 65 cc and 56 yorkshire) were evaluated. gene and genotypic frequencies, heterozygosity, genetic distances and filogenetic trees between breed groups were analyzed. in the comparison among the three breeds, the allelic and genotypic frequencies were different for cast, decr1, hfabp4, lep, mcr4 and chx. for lipe, cc pigs were similar to yorkshire; while for myog, the cpm were similar to yorkshire breeds. there were no differences in the genic and genotypic frequencies for hal and rn genes between creole and yorkshire populations. the yorkshire breed had higher favorable allele frequency for cast, lipe, mcr4 and myog, smaller for decr1, hfabp4, and for chx, and moderate for lep genes. the heterozygosity average for all genes was higher in cpm (0.42±0.05) and similar in both the cc (0.33±0.06) and yorkshire (0.35±0.05) breeds. in the estimation of genetic distances considering all genes, the cc breed are more distant from the yorshire pigs.
Biotechnological Alternatives for the Utilization of Dairy Industry Waste Products  [PDF]
Cortés-Sánchez Alejandro De Jesus, Valle-González Elba Ruth, Salazar-Flores Rodolfo Daniel, Ashutosh Sharma
Advances in Bioscience and Biotechnology (ABB) , 2015, DOI: 10.4236/abb.2015.63022
Abstract: The industrial obtainment and manufacturing of food cause high levels of pollution because of the generation of waste byproducts. Over the past few years, there has been a significantly increased interest in preserving, restoring and establishing an ecological balance during food production. Many investigators propose biotechnological solutions to the treatment of industrial wastes, especially waste from the dairy industry. The aim of this review is to present biotechnological approaches to the treatment and utilization of wastes from the dairy industry, specifically for milk whey and also discussed biotechnological methods to reduce environmental pollution and obtain chemical compounds with potential applications in the industry.
Tratamiento endovascular del vasospasmo cerebral inducido por hemorragia subaracnoidea aneurismática
Alcázar,Pedro P.; González,Alejandro; Romance,Antonio;
Medicina Intensiva , 2008,
Abstract: cerebral vasospasm remains a leading cause of death and disability in patients with aneurysmal subarachnoid hemorrhage. when vasospasm becomes refractory to maximal medical treatment, endovascular therapies may be considered as an option to increase cerebral blood flow to prevent cerebral infarction. endovascular techniques include transluminal balloon angioplasty and intra-arterial infusion of vasorelaxants. this article reviews the various endovascular techniques for the treatment of cerebral vasospasm and discusses the mechanisms of action, techniques of administration, clinical results, and limitations of these treatment strategies.
Tratamiento endovascular del vasospasmo cerebral inducido por hemorragia subaracnoidea aneurismática Endovascular treatment of cerebral vasospasm due to aneurysmal subarachnoid hemorrhage
Pedro P. Alcázar,Alejandro González,Antonio Romance
Medicina Intensiva , 2008,
Abstract: El vasospasmo cerebral es una de las principales causas de morbimortalidad en los pacientes con hemorragia subaracnoidea por rotura de un aneurisma cerebral. Cuando el vasospasmo se hace resistente al tratamiento médico máximo, el tratamiento endovascular es una opción terapéutica para incrementar el flujo sanguíneo cerebral y evitar lesiones isquémicas cerebrales. Los rápidos avances en técnicas endovasculares permiten utilizar la angioplastia transluminal percutánea y la infusión intraarterial de diversos fármacos vasodilatadores para revertir el vasospasmo. En este artículo se revisan las diferentes técnicas endovasculares disponibles y se describen sus mecanismos de acción, técnicas de administración, resultados clínicos y complicaciones. Cerebral vasospasm remains a leading cause of death and disability in patients with aneurysmal subarachnoid hemorrhage. When vasospasm becomes refractory to maximal medical treatment, endovascular therapies may be considered as an option to increase cerebral blood flow to prevent cerebral infarction. Endovascular techniques include transluminal balloon angioplasty and intra-arterial infusion of vasorelaxants. This article reviews the various endovascular techniques for the treatment of cerebral vasospasm and discusses the mechanisms of action, techniques of administration, clinical results, and limitations of these treatment strategies.
Soccer kick kinematic differences between experienced and non-experienced soccer players
Mu?oz López, Alejandro,González Jurado, José Antonio
Retos : Nuevas Perspectivas de Educación Física, Deporte y Recreación , 2012,
Abstract: Purpose: to examine kinematic differences of instep soccer kick between experienced and non-experienced soccer players. Subjects: 17 men between 17 and 21 years old. Methodology: a 3D film system with 4 cameras was used. Maximum power instep kicks were executed. It was analyzed feet velocity in the impact, maximum hip extension, maximum knee flexion and kick phases duration. Results: were found significant differences in feet velocity with non-dominant leg in the impact moment (m/s) (Experienced: 14.5±.52, Non-experienced: 12.5±.5; p<.001) and maximum hip extension (degrees) (Experienced: 39.2 ± 1.3, Non-experienced: 34.28±3.2; p<.001). Also were significant differences in the second phase duration in both legs (p<.05). Conclusions: Maximum instep soccer kick show significant differences between groups of different level only in non-dominant leg.
?ES EL HOMA UN INSTRUMENTO ADECUADO PARA EL DIAGNóSTICO DE INSULINO RESISTENCIA EN PACIENTES CON SíNDROME DE OVARIO POLIQUíSTICO?
Blümel M.,Bernardita; Flores F.,Mariana; González G.,José Antonio; Arraztoa V.,José Antonio;
Revista chilena de obstetricia y ginecología , 2005, DOI: 10.4067/S0717-75262005000500012
Abstract: insulin resistance is present in 70% of patients with pcos, thus being a common physiopathology finding in women who suffer this condition. the gold standard technique for the diagnosis of this metabolic disorder is the euglicemic-hiperinsulinemic clamp. however, an alternative method exists, which has the advantage of being simpler and less expensive: the homa (homeostasis model assessment). the purpose of this study is to confirm the validity of homa as an approach for the diagnosis of insulin resistance in pcos. to achieve this, a systematic review was conducted in medical literature, applying different criteria. from the data collected, four articles were selected, which met with the established criteria. based on the evidence found, homa appears to be an accurate, alternative method for the diagnosis of insulin resistance. it correlation with the euglicemic clamp varies according to the different pathologies and nutritional condition of the patient, with obesity and overweight being the strongest association
ES EL HOMA UN INSTRUMENTO ADECUADO PARA EL DIAGNóSTICO DE INSULINO RESISTENCIA EN PACIENTES CON SíNDROME DE OVARIO POLIQUíSTICO?
Bernardita Blümel M.,Mariana Flores F.,José Antonio González G.,José Antonio Arraztoa V.
Revista Chilena de Obstetricia y Ginecología , 2005,
Abstract: Un hallazgo fisiopatológico frecuente en pacientes con síndrome de ovario poliquístico (SOP) es la insulino resistencia, presente hasta en un 70% de estas mujeres. El patrón de oro para su diagnóstico lo constituye el clamp euglicémico-hiperinsulinémico, sin embargo lo engorroso de su realización ha hecho preferir clínicamente el uso del HOMA (Homeostasis Model Assessment) que tiene la ventaja de su simplicidad y bajo costo. Esta revisión tiene por objeto verificar la validez del HOMA como instrumento de diagnóstico de insulina resistencia en pacientes con SOP. Para esto se realizó una búsqueda detallada de la bibliografía médica al respecto en diferentes bases de datos. Aplicando distintos criterios se seleccionaron finalmente 4 artículos que constituyen la base de esta revisión. Fundamentados en la evidencia se concluye que el HOMA constituye una alternativa válida como método diagnóstico de insulina resistencia. Su correlación con el clamp euglicémico hiperinsulinémico varía de acuerdo a la patología estudiada y al estado nutricional, siendo la asociación más fuerte en el subgrupo de pacientes obesas o con sobrepeso Insulin resistance is present in 70% of patients with PCOS, thus being a common physiopathology finding in women who suffer this condition. The gold standard technique for the diagnosis of this metabolic disorder is the euglicemic-hiperinsulinemic clamp. However, an alternative method exists, which has the advantage of being simpler and less expensive: the HOMA (Homeostasis Model Assessment). The purpose of this study is to confirm the validity of HOMA as an approach for the diagnosis of insulin resistance in PCOS. To achieve this, a systematic review was conducted in medical literature, applying different criteria. From the data collected, four articles were selected, which met with the established criteria. Based on the evidence found, HOMA appears to be an accurate, alternative method for the diagnosis of insulin resistance. It correlation with the euglicemic clamp varies according to the different pathologies and nutritional condition of the patient, with obesity and overweight being the strongest association
Evaluation of Changes in Actin Filaments of RK13 Cells Infected with Malassezia pachydermatis  [PDF]
Iris del Socorro Flores Rodríguez, Tonatiuh Alejandro Cruz Sánchez, José Luis Nieto Bordes, Francisco Rodolfo González Díaz, Carlos Ignacio Soto Zárate, Carlos Gerardo García Tovar
Open Journal of Veterinary Medicine (OJVM) , 2018, DOI: 10.4236/ojvm.2018.82003
Abstract: Background: Malassezia pachydermatis is the main causative agent of canine otitis and also of a myriad of dermatological problems in companion animals; its interaction mechanisms with host cells are still unclear. Objectives: To establish an in vitro infection model of M. pachydermatis-exposed RK13 cells in order to evaluate cell morphological changes as well as changes in the structure of actin filaments. Methods: Cultures of RK13 cells were infected with M. pachydermatis, alterations caused by the yeast were evaluated by optical and fluorescence microscopy. Results: M. pachydermatis adheres itself to the cell and produces the formation of multiple agglomerates that cause changes in cell morphology, formation of cell aggregates in overlays, presence of syncytia and destruction of cell culture structure. The damaged cells presented changes in the actin filaments consisting of thickening of the cell cortex and loss of stress fibers. On the other hand, the formation of perinuclear actin rings in the yeasts was observed. Conclusions: An in vitro infection model was established with M. pachydermatis and alterations in cell morphology were observed consisting of changes in the structure of the actin filaments, overgrowth of the cells and the presence of syncytia.
MODERN APPROACHES FOR THE STUDY OF s-TRIAZINE HERBICIDE BIOREMEDIATION IN AGRICULTURAL SOILS
Hernández,Marcela; Morgante,Verónica; Flores,Cecilia; Villalobos,Patricio; González,Myriam; Miralles,Pola; Dinamarca,Alejandro; Seeger,Michael;
Revista de la ciencia del suelo y nutrición vegetal , 2008, DOI: 10.4067/S0718-27912008000200004
Abstract: the extensive use of s-triazine herbicides in diverse countries causes environmental and health concern. simazine and atrazine are s-triazines widely used in agriculture and forestry. although, natural dissipation of s-triazines in soils by physicochemical processes has been described, the main mechanism for their removal is biological degradation by microorganisms. bioremediation is a successful strategy for the removal of i-triazines in soil. for bioaugmentation processes, s-triazine-degrading bacteria are required, which isolation from agricultural soils was described in this report. studies of s-triazine adsorption and leaching in soil are useful to determine the bioavailability of these herbicides. the detection of s-triazine-degrading catabolic activity by most-probable-number (mpn) and the reduction of the respiration indicator 2,3,5-triphenyl-2h-tetrazolium chloride (ttc) were presented. the relative abundances of s-triazine catabolic genes in soil were analyzed by the mpn-pcr technique. culture-independent molecular methods such as fish, t-rflp and clone libraries are useful to study the effects of herbicide application and bioaugmentation on soil microbial communities and their dynamics. these experimental methods allow the design of biotechnological strategies for the clean-up of s-triazine contaminated soils.
A Minor Dihydropyran Apocarotenoid from Mated Cultures of Blakeslea trispora
Alejandro F. Barrero,M. Mar Herrador,Pilar Artega,José-Antonio González,Jesús F. Arteaga
Molecules , 2012, DOI: 10.3390/molecules171112553
Abstract: The heterocyclic C15 apocarotenoid 1 was isolated from mated cultures of the strains F986 (+) and F921 (?) of Blakeslea trispora. This new compound formed during sexual interaction is a minor constituent of the culture media and its structure was elucidated by spectroscopic data, including 2D-NMR. A plausible biosynthetic pathway involving a double degradation of β-carotene, followed by several oxidations of the resulting monocyclofarnesane C15 fragment is proposed.
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