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1.
Rev. estomat. salud ; 21(2): 37-45, 20130000.
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-877875

RESUMO

Introducción: Los sistemas de secreción bacterianos tipo IV tienen una variedad de funciones biológicas como el intercambio de material genético con otras bacterias y la translocación de ADN virulento, con sus proteínas efectoras, dentro de las células del huésped. Acinetobacter baumannii es un patógeno que causa infecciones en humanos y registra porcentajes altos de multiresistencia a fármacos. Objetivo: Relacionar el conocimiento so- bre los sistemas de secreción tipo IV con los patrones de resistencia y virulencia de Acinetobacter baumannii. Materiales y Métodos: Se realizó una buscada en PMC (NCBI) utilizando un conjunto de palabras claves. Resultados: De 133 artículos se analiza - ron 14 para establecer la relación entre los sistemas de secreción microbiano y la resistencia y virulencia de A. baumannii . Conclusiones: Los sistemas de secreción bacterianos tipo IV presentes en A. bau - mannii son una pieza clave en el enten - dimiento de los patrones de virulencia y resistencia...(Au)


Introduction: Type IV Bacterial Secretion Systems (TFSS) have a variety of biolo- gical functions such as the exchange of genetic material with other bacteria and virulent translocation of DNA with its effector proteins into host cells. A. bauman - nii is a pathogen that causes infections in humans and exhibits high rates of multidrug resistance to drugs. Objective: To relate how type IV secretion systems is associated with patterns of resistance and virulence in A. baumannii. Materials and Methods: Exhaustive search in PMC (NCBI) using a set of keywords was performed. Results: The search yielded 133 articles. Fourteen articles were analysed to deter - mine the bacterial secretion system and the resistant and virulence of AA. baumannii. Conclusions: Systems of bacterial type IV secretion present in A. baumannii are crucial in understanding the patterns of virulence and resistance...(Au)


Assuntos
Humanos , Actinobacteria , Odontologia , Diagnóstico Bucal , Transferência Genética Horizontal , Microbiologia , Medicina Bucal , Patologia Bucal , Revisão , Virulência , Fatores de Virulência , Acinetobacter baumannii , Farmacorresistência Bacteriana , Sistemas de Secreção Tipo IV
2.
BMC Genomics ; 12: 506, 2011 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-21999602

RESUMO

BACKGROUND: Several studies have shown that genomes can be studied via a multifractal formalism. Recently, we used a multifractal approach to study the genetic information content of the Caenorhabditis elegans genome. Here we investigate the possibility that the human genome shows a similar behavior to that observed in the nematode. RESULTS: We report here multifractality in the human genome sequence. This behavior correlates strongly on the presence of Alu elements and to a lesser extent on CpG islands and (G+C) content. In contrast, no or low relationship was found for LINE, MIR, MER, LTRs elements and DNA regions poor in genetic information. Gene function, cluster of orthologous genes, metabolic pathways, and exons tended to increase their frequencies with ranges of multifractality and large gene families were located in genomic regions with varied multifractality. Additionally, a multifractal map and classification for human chromosomes are proposed. CONCLUSIONS: Based on these findings, we propose a descriptive non-linear model for the structure of the human genome, with some biological implications. This model reveals 1) a multifractal regionalization where many regions coexist that are far from equilibrium and 2) this non-linear organization has significant molecular and medical genetic implications for understanding the role of Alu elements in genome stability and structure of the human genome. Given the role of Alu sequences in gene regulation, genetic diseases, human genetic diversity, adaptation and phylogenetic analyses, these quantifications are especially useful.


Assuntos
Fractais , Genoma Humano , Elementos Alu , Composição de Bases , Mapeamento Cromossômico , Cromossomos Humanos/genética , Ilhas de CpG , Bases de Dados Genéticas , Análise Discriminante , Humanos , Modelos Genéticos , Família Multigênica , Análise de Sequência de DNA
4.
Rev. CIEZT ; 2(4): 33-8, ene.-dic. 1997.
Artigo em Espanhol | LILACS | ID: lil-235623

RESUMO

Presenta dos casos de recidivas de linfoma no Hodgkin de grado intermedio de malignidad, de presentación incial en el anillo de Waldeyer, sometidos a tratamiento quimioterápico. Se discute sobre la localización de la recidiva y la agresividad de la misma.


Assuntos
Humanos , Linfoma não Hodgkin/tratamento farmacológico , Linfoma não Hodgkin/terapia
5.
Quito; s.n; 1996. 6 p. tab, graf.
Monografia em Espanhol | LILACS | ID: lil-208512

RESUMO

Se presenta un estudio retrospectivo de fracturas de diáfisis femoral, de cinco años realizado en el Hospital Quito de la Policía Nacional, durante el período de 1990-1995. Se seleccionaron un total de 24 pacientes con fractura de diáfisis femoral, tratadas en este centro hospitlario. Se analizaron las siguientes características: edad, sexo, causa, tratamiento, evolución y complicaciones. En nuestro estudio se encontró mayor porcentaje en el sexo masculino (70,8 por ciento), la edad de mayor incidencia fue de 31 a 40 años (20,8 por ciento) entre las causas que predominó fue el accidente de tránsito (75.0 por ciento). El tratamiento fue quirúrgico (79.1 por ciento) finalmente las complicaciones fueron mínimas (8,2 por ciento).


Assuntos
Humanos , Masculino , Feminino , Adulto , Diáfises , Fêmur , Fraturas Ósseas
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