Výsledky vyhledávání - "Mercedes Zaldívar"

Akademický článek

Validación de un método de determinación de Na, K, Cd, Pb y Hg por Espectrometría de Absorción Atómica en policosanol y extracto purificado de cera de caña

Autor: Ana Cecilia Rodríguez Rodríguez, Bárbara Luna Saucedo, Liliana Martín Chávez, Javier Mosquera Sierra, Mercedes Zaldívar Subirat

Publikováno v: Revista CENIC Ciencias Químicas, Vol 36, Iss 1, Pp 009-014 (2005)

Se desarrolló y validó una metodología analítica para la determinación por espectrometría de absorción atómica de los contenidos de Na, K, Cd, Pb y Hg en policosanol y extracto purificado de cera de caña. Los criterios de validación fueron

Externí odkaz: https://doaj.org/article/59a6ca33e46149ea88339f8e1858bf1a

Zobrazit plný text záznamu

Akademický článek

Contribution of the type VI secretion system encoded in SPI-19 to chicken colonization by Salmonella enterica serotypes Gallinarum and Enteritidis.

Autor: Carlos J Blondel, Hee-Jeong Yang, Benjamín Castro, Sebastián Chiang, Cecilia S Toro, Mercedes Zaldívar, Inés Contreras, Helene L Andrews-Polymenis, Carlos A Santiviago

Publikováno v: PLoS ONE, Vol 5, Iss 7, p e11724 (2010)

Salmonella Gallinarum is a pathogen with a host range specific to poultry, while Salmonella Enteritidis is a broad host range pathogen that colonizes poultry sub-clinically but is a leading cause of gastrointestinal salmonellosis in humans and many o

Externí odkaz: https://doaj.org/article/f618d8a3bb0d4fb1abaead1121c4b131

Zobrazit plný text záznamu

The cellular level of O-antigen polymerase Wzy determines chain length regulation by WzzB and WzzpHS-2 in Shigella flexneri 2a

Autor: Javier A. Carter, Mercedes Zaldívar, Juan Cristobal Jimenez, Cristina L. Marolda, Sergio A. Álvarez, Inés Contreras, Miguel A. Valvano

Publikováno v: Microbiology & Immunology Publications

The lipopolysaccharide O antigen of Shigella flexneri 2a has two preferred chain lengths, a short (S-OAg) composed of an average of 17 repeated units and a very long (VL-OAg) of about 90 repeated units. These chain length distributions are controlled

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3de1dce8a42b9d0f74e491cdfdbb6df9
https://doi.org/10.1099/mic.0.028944-0

Zobrazit plný text záznamu

Growth-phase regulation of lipopolysaccharide O-antigen chain length influences serum resistance in serovars of Salmonella

Autor: Mercedes Zaldívar, Javier A. Carter, Inés Contreras, Denisse Bravo, Anilei Hoare, Cecilia A. Silva, Carlos J. Blondel, Sergio A. Álvarez, Miguel A. Valvano

Publikováno v: JOURNAL OF MEDICAL MICROBIOLOGY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

The amount of lipopolysaccharide (LPS) O antigen (OAg) and its chain length distribution are important factors that protect bacteria from serum complement. Salmonella enterica serovar Typhi produces LPS with long chain length distribution (L-OAg) con

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f9fd401176f63db5f898c02c0cc2ef0
https://doi.org/10.1099/jmm.0.47848-0

Zobrazit plný text záznamu

Active Metabolites from Dunalia spinosa Resinous Exudates

Autor: Ruben Garcıía, Consuelo Castro, Franco Delle Monache, Mercedes Zaldívar, Eliana Belmonte, Nadine Backhouse, Giovanna Rocco, Carla Delporte, Silvia Erazo

Publikováno v: Zeitschrift für Naturforschung C. 63:492-496

Dunalia spinosa, a plant used in folk medicine for toothaches, breathing problems and cleansing wounds, was found active as antimicrobial and antioxidant. A new (E)-aurone rutinoside (dunaurone) has been isolated from the aerial parts of the plant, a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4199534f1e1a6a1eeb47326d182f624e
https://doi.org/10.1515/znc-2008-7-804

Zobrazit plný text záznamu

O-antigen modal chain length in Shigella flexneri 2a is growth-regulated through RfaH-mediated transcriptional control of the wzy gene

Autor: Javier A. Carter, Inés Contreras, Mercedes Zaldívar, Cristina L. Marolda, Sergio A. Álvarez, Carlos J. Blondel, Miguel A. Valvano

Publikováno v: Microbiology. 153:3499-3507

Shigella flexneri 2a 2457T produces lipopolysaccharide (LPS) with two O-antigen (OAg) chain lengths: a short (S-OAg) controlled by WzzB and a very long (VL-OAg) determined by Wzz(pHS-2). This study demonstrates that the synthesis and length distribut

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d899c25ebcf0dc2b84cd704871d6c27
https://doi.org/10.1099/mic.0.2007/010066-0

Zobrazit plný text záznamu

Constituents and biological activities of Schinus polygamus

Autor: Carla Delporte, Nadine Backhouse, Gladys Iturra, Silvia Erazo, R. García, Esther Caballero, Jose Luis López, Rosa Negrete, Mercedes Zaldívar

Publikováno v: Journal of Ethnopharmacology. 107:395-400

The folk medicine employs Schinus polygamus to treat arthritic pain and cleansing of wounds. As no reports of pharmacological studies supporting its anti-inflammatory and analgesic properties, extracts of increasing polarity were assayed on the base

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b55f99ac67d0461ba25975b5c9929268
https://doi.org/10.1016/j.jep.2006.03.028

Zobrazit plný text záznamu

TherfaHgene, which affects lipopolysaccharide synthesis inSalmonella entericaserovar Typhi, is differentially expressed during the bacterial growth phase

Autor: Soledad Saldı́as, Inés Contreras, Gonzalo M. Rojas, Mercedes Zaldívar, Mauricio Bittner

Publikováno v: FEMS MICROBIOLOGY LETTERS
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

We have cloned and sequenced the rfaH gene from Salmonella enterica serovar Typhi strain Ty2. The gene showed a high degree of similarity to the rfaH genes from Escherichia coli K-12 and S. enterica serovar Typhimurium. A rfaH mutant was constructed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc035ee204de3ccd623d4a695d7e7208
https://doi.org/10.1111/j.1574-6968.2001.tb10874.x

Zobrazit plný text záznamu

Infection of mice by salmonella enterica serovar enteritidis involves additional genes that are absent in the genome of serovar typhimurium

Autor: Cecilia A. Silva, Steffen Porwollik, Carlos J. Blondel, Helene Andrews-Polymenis, Carlos A. Santiviago, Cecilia S. Toro, Mercedes Zaldívar, Carolina P. Quezada, Michael McClelland, Inés Contreras

Publikováno v: INFECTION AND IMMUNITY
Artículos CONICYT
CONICYT Chile
instacron:CONICYT

Salmonella enterica serovar Enteritidis causes a systemic, typhoid-like infection in newly hatched poultry and mice. In the present study, a library of 54,000 transposon mutants of S. Enteritidis phage type 4 (PT4) strain P125109 was screened for mut

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19721813eca9cea7559ebca35338599c

Zobrazit plný text záznamu

Antibacterial Diterpenoids from Fabiana densa var. ramulosa

Autor: Rosa Negrete, Franco Delle Monarche, Eliana Belmonte, Paola Tapia, Mercedes Zaldívar, Nadine Backhouse, Carla Delporte, Silvia Erazo

Publikováno v: Planta Medica. 68:361-363

A biologically monitored fractionation of the resinous exudate of Fabiana densa Remy var. ramulosa Wedd, led to the isolation of the two new diterpenes: ent-beyer-15-en-18-O-succinate and ent-beyer-15-en-18-0-oxalate as the unique compounds responsib

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7df27c7fd70210c53858c70bd6e66ed7
https://doi.org/10.1055/s-2002-26746

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání