Universidad Anahuac Oaxaca

Fosfomycin is currently a viable option against urinary tract infections, particularly against extended-spectrum β-lactamases (ESBL)-producing E. coli, due to its unique mechanism of action and its low resistance among bacteria. The objective of this study was to investigate two of the three most common mechanisms of resistance against this antibiotic among 350 ESBL-producing E. coli strains isolated from the urine of Mexican patients. The prevalence of fosfomycin resistance in our study was 10.9% (38/350). Of all resistant isolates analyzed, 23 (60.5%) were identified as fos-producing organisms, with 14 strains carrying fosA3 and 9, fosA1. Additionally, 11 (28.9%) fosfomycin-resistant isolates presented resistance due to impaired antibiotic transport and 8 (21.0%) both mechanisms. No resistance mechanism investigated in the study was found on 12 strains. All 38 confirmed ESBL-producing isolates carried a blaCTX-M subtype, 36 (94.5%) belonged to the O25b-ST131 clone, and all of them were able to transfer the fosfomycin resistance trait to recipient strains horizontally. This is the first study in Mexico demonstrating a plasmid-mediated fosfomycin resistance mechanism among clinical E. coli strains. Since our results suggest a strong association among fos and blaCTX-M genes and ST131 clones in uropathogenic E. coli, plasmid-mediated fosfomycin resistance should be closely monitored.

El objetivo de esta investigación fue rescatar y analizar las memorias del habitar. Se realizó una búsqueda histórica sobre el sentimiento de pertenencia de los obreros en el ramo fabril, partiendo desde su pasado. Para esto, se llevaron a cabo entrevistas en profundidad bajo un esquema deductivo de aquellas personas que vivieron y participaron como trabajadores de las fábricas de textil de hilados y tejidos de San José y Soledad Vista Hermosa. Esta investigación fue efectuada del 2018 al 2019, en la comunidad de San Agustín, localizada en la parte central del Estado de Oaxaca, en la Región de los Valles Centrales, perteneciente al Distrito de Etla.

This document presents the advantages of using a private cloud of Infrastructure as a Service, using the OpenStack technology for Institutions of Higher Education of the Tecnologico Nacional de Mexico in the state of Oaxaca. The analysis of the research results consulted in the academic databases such as: EBSCO, Latindex, Redalyc, Dialnet and Scielo, show the importance of cloud computing in higher education institutions, since this type of technology allows the use of a more efficient way of computing infrastructure existing in the institution and also the rapid implementation of new information systems, in addition to the private cloud through OpenStack, has advantages over other IaaS Open source technologies, such as : cost, documentation, ease of implementation, and services offered. OpenStack provides the possibilities of implementing private IaaS clouds in a distributed way, thus allowing collaborative work between higher education institutions in the country or abroad in favor of academic improvement. Keywords: Cloud Computing, OpenStack, Open Source, IaaS, IES .

El turismo es una actividad económica que se considera cada vez más importante para generar crecimiento económico y combatir la pobreza. Sin embargo, la relación que existe entre el turismo y el crecimiento económico aún no es tan clara. En este artículo se presenta la metodología propuesta por Ivanov y Webster (2007) para medir la contribución del turismo al crecimiento económico. Adicionalmente, se ha realizado una expansión de dicha metodología que permite medir la contribución individual que cada una de las ramas características de este sector tiene sobre el crecimiento económico, lo que nos permite tener una visión más amplia del vínculo entre las actividades turísticas y el crecimiento económico. Este método es aplicado al caso de México para el periodo 2005-2012.