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Search Results: 1 - 10 of 202776 matches for " Adrián Morales "
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Actinomicosis torácica: una infección infrecuente en pediatría
Morales,Adrián; Berardo,Marcelo; Labaroni,Carlos;
Archivos argentinos de pediatr?-a , 2007,
Abstract: we report a case of pulmonary actinomycosis an infrequent clinical form in childhood. we describe a thoracic mass and empiema necessitatis which was diagnosed and successfully treated with standard methods.
Antimicrobial Activity of Three Baccharis Species Used in the Traditional Medicine of Northern Chile
Glauco Morales,Adrián Paredes,Patricia Sierra,Luis A. Loyola
Molecules , 2008, DOI: 10.3390/molecules13040790
Abstract: The antimicrobial activities of aqueous ethanol and chloroform extracts of threeBaccharis species currently used in Northern Chile folk medicine for the treatment ofseveral infectious and inflammatory disorders were tested against Gram-positive andnegative bacteria and fungal spp. using the agar-disc diffusion assay. The results indicatedthat the activity was more pronounced against Gram-positive than against Gram-negativebacteria and yeast. No significant differences on the antibacterial activity were observed inthe aqueous ethanol versus chloroform extracts. None of the plant extracts evaluatedexhibited any activity against ten fungi tested.
Antioxidant activity of 50% aqueous - ethanol extract from Acantholippia deserticola
MORALES,GLAUCO; PAREDES,ADRIáN; SIERRA,PATRICIA; LOYOLA,LUIS A;
Biological Research , 2008, DOI: 10.4067/S0716-97602008000200004
Abstract: the antioxidant properties oí acantholippia deserticola, a herb used in traditional northern chilean medicine was studied using free radical - generating systems. the 50% aqueous - ethanol extract oí acantholippia deserticola protected against non-enzymatic lipid peroxidation in microsomal membranes of rat, induced by an fe++ - ascorbate system and measured spectrophotometrically by the tbars test, and had strong free radical scavenging capacities on stable abts and dpph radicáis. the results shows that the ic50 valué of the 50% aqueous - ethanolic extract oí a.deserticola is 18 ± 0.5 μg/ml in dpph radical - scavenging, 15 ± 0.8 μg/ml in lipid peroxidation , total antioxidant activity (taa) is 0.95 mm of trolox per mg/ml of extract. the total phenolics content of extract is 725 ± 12 mg of gallic acid equivalent per g of dried extract. the results indicate that the 50% aqueous - ethanol extract oí acantholippia deserticola clearly has antioxidant properties.
Antioxidant activity of 50% aqueous - ethanol extract from Acantholippia deserticola
GLAUCO MORALES,ADRIáN PAREDES,PATRICIA SIERRA,LUIS A LOYOLA
Biological Research , 2008,
Abstract: The antioxidant properties oí Acantholippia deserticola, a herb used in traditional northern Chilean medicine was studied using free radical - generating systems. The 50% aqueous - ethanol extract oí Acantholippia deserticola protected against non-enzymatic lipid peroxidation in microsomal membranes of rat, induced by an Fe++ - ascorbate system and measured spectrophotometrically by the TBARS test, and had strong free radical scavenging capacities on stable ABTS and DPPH radicáis. The results shows that the IC50 valué of the 50% aqueous - ethanolic extract oí A.deserticola is 18 ± 0.5 μg/mL in DPPH radical - scavenging, 15 ± 0.8 μg/mL in lipid peroxidation , Total Antioxidant Activity (TAA) is 0.95 mM of Trolox per mg/mL of extract. The total phenolics content of extract is 725 ± 12 mg of gallic acid equivalent per g of dried extract. The results indicate that the 50% aqueous - ethanol extract oí Acantholippia deserticola clearly has antioxidant properties.
Bribri, nueva variedad de fríjol rojo peque o para Costa Rica
Juan Carlos Hernández,Rodolfo Araya,Adrián Morales
Agronomía Mesoamericana , 2001,
Abstract: Entre 1996 y 1999 fue introducida y evaluada en Costa Rica la línea MD 23-24 que dio origen a la nueva variedad de frijol Bribri. La misma fue desarrollada por la Escuela Agrícola Panamericana-Zamorano y se originó de la cruza (RAB 310/XAN 155) X (DOR 391/POMPADOUR G). La variedad se caracteriza por presentar un grano peque o de color rojo brillante, de hábito de crecimiento Tipo II-B, de porte erecto y ciclo vegetativo entre 76 y 80 días. Las dos principales zonas de vida donde se evaluó fueron la bh-T (bosque húmedo tropical) y el bmh-P (bosque muy húmedo Premontano). En la mayoría de los lugares evaluados predominaron peque as explotaciones comerciales y suelos ultisoles de baja fertilidad. La variedad Bribri superó en rendimiento promedio, al testigo nacional en 17,2% y al testigo local en13,4%. Su producción fue superior en un 8,5% al promedio de rendimiento obtenido en todos los ensayos. La etapa de verificación y de validación se efectuó en nueve y once localidades respectivamente, con base en la tecnología empleada por los productores. Bribri superó en rendimiento a los testigos locales en el 67% de las parcelas en la fase de verificación (con un promedio de 15,5% más de kg/ha) y en el 80% de las parcelas de validación (con un promedio de 7,5% mas de kg/ha). Mostró además tolerancia a la mustia hilachosa. (Thanatephorus cucumeris (A.B. Frank) Donk). En el a o 2000 se sembraron 100 ha de Bribri a nivel comercial en la Región Brunca
CONSTITUENTS OF HELENIUM ATACAMENSE Cabr.
GLAUCO MORALES,PATRICIA SIERRA,ADRIáN PAREDES,LUIS A LOYOLA
Journal of the Chilean Chemical Society , 2006,
Abstract: Constituents of Helenium atacamense Cabr were investigated following a preliminary screening of the biotoxicity against Artemia salina and the antitumoral activity of ethanol extract . Three compounds already identified were isolated from aerial parts of Helenium atacamense Cabr, and their structures were elucidated as helenalin, quercetin and 3-O-methylquercetin based on mass and various nuclear magnetic resonance techniques . Quercetin and 3- O- methylquercetin were tested by using TEAC Test
SECONDARY METABOLITES FROM FOUR MEDICINAL PLANTS FROM NORTHERN CHILE: ANTIMICROBIAL ACTIVITY AND BIOTOXICITY AGAINST Artemia salina
GLAUCO MORALES,PATRICIA SIERRA,ARLETT MANCILLA,ADRIáN PAREDES
Journal of the Chilean Chemical Society , 2003,
Abstract: Antibacterial activity and biotoxicity against Artemia salina of chloroform and alcohol extracts and isolated products from four plants used in ethnomedicine in northern Chile is reported. Nine compounds already identified were isolated from aerial parts of Artemisia copa Phil., Acantholippia punensis Botta, Ephedra andina Poepp. ex C. A . Mey and Haplopappus rigidus Phil : 3,5 - dihydroxy - 6, 7, 3', 4' - tetramethoxyflavone, lupeol, beta - amyrine , beta - sitosterol, ephedrine, 2 - ethylhexanol phthalate , 18 - acetoxy - cis - cleroda - 3,13 Z - dien - 15 - oic acid, 5,4' - dihydroxy -7- methoxyflavanone and 3,5,7 - trihydroxy - 6, 4' - dimethoxyflavone
Auditory evoked potentials in children at neonatal risk for hypoacusis
Garza Morales,Saúl; Poblano,Adrián; Robledo Galván,Alicia; Fernández Carrocera,Luis Alberto;
Revista Panamericana de Salud Pública , 1997, DOI: 10.1590/S1020-49891997001000002
Abstract: brainstem auditory evoked potentials provide a simple, noninvasive method of evaluating hearing function and have been widely used for early detection of hypoacusis in children. between april 1992 and may 1994, a study was done of 400 mexican children who presented at least one neonatal risk factor for hearing impairment. the average age of the children studied was 6.6 months and their average gestational age at birth was 35.1 weeks. just over half of the children had been treated with amikacin. the study found 1427 risk factors (about 3.5 per child), the most common ones being exposure to ototoxic substances, hyperbilirubinemia, and birthweight <1500 g. in 27% of the children, peripheral auditory changes were found, and 13% did not respond to auditory stimuli. low birthweight and young gestational age at birth, high serum concentration of bilirubin, sepsis, subependymal or intraventricular hemorrhage, mechanical ventilation, and exposure to ototoxic substances were significantly associated with the presence of severe or profound hypoacusis.
Potenciales provocados auditivos en ni?os con riesgo neonatal de hipoacusia
Garza Morales,Saúl; Poblano,Adrián; Robledo Galván,Alicia; Fernández Carrocera,Luis Alberto;
Revista Panamericana de Salud Pública , 1997, DOI: 10.1590/S1020-49891997000200005
Abstract: auditory evoked potentials of the brain stem (aepbs) provide a simple, noninvasive method of evaluating hearing function and have been widely used for early detection of hypoacusis in children. between april 1992 and may 1994, a study was done of 400 mexican children who presented at least one neonatal risk factor for hearing impairment. the average age of the children studied was 6.6 months and their average gestational age at birth was 35.1 weeks. just over half of them (51%) had been treated with amikacin. the study found 1 427 risk factors (3.5 per child), the most common ones being exposure to ototoxic substances, hyperbilirubinemia, and birthweight of less that 1 500 g. in 27% of the children, peripheral auditory changes were found, and 13% did not respond to auditory stimuli. low birthweight and young gestational age at birth, high serum concentration of bilirubin, sepsis, subependymal or intraventricular hemorrhage, mechanical ventilation, and exposure to ototoxic substances were significantly associated with the presence of severe or profound hypoacusis.
Potenciales provocados auditivos en ni os con riesgo neonatal de hipoacusia
Garza Morales Saúl,Poblano Adrián,Robledo Galván Alicia,Fernández Carrocera Luis Alberto
Revista Panamericana de Salud Pública , 1997,
Abstract: Los potenciales provocados auditivos del tallo cerebral (PPATC) son un método sencillo y no invasor de evaluación de la función auditiva, que se utiliza ampliamente en ni os para detectar tempranamente hipoacusia. Entre abril de 1992 y mayo de 1994, se estudiaron 400 ni os mexicanos que presentaban, al menos, un factor de riesgo neonatal de hipoacusia. La media de la edad de los ni os estudiados fue 6,6 meses y la media de la edad gestacional al nacer, 35,1 semanas. El 51% de ellos fueron tratados con amikacina. Se registraron 1 427 factores de riesgo (3,5 por ni o), entre los que predominaron la exposición a ototóxicos, la hiperbilirrubinemia y el peso al nacer menor de 1 500 g. En 27% se encontraron alteraciones auditivas de tipo periférico y en 13%, ausencia de respuesta a estímulos auditivos. El bajo peso y la menor edad gestacional al nacer, la concentración máxima de bilirrubina en el suero, la presencia de sepsis, la hemorragia subependimaria o intraventricular, la ventilación mecánica y la exposición a ototóxicos se asociaron significativamente con la presencia de hipoacusia grave o profunda.
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