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        Genetic Diversity and Population Structure of Escherichia coli from Neighboring Small-Scale Dairy Farms

        Jesús Andrei Rosales-Castillo,Ma. Soledad Vázquez-Garcidueñas,Hugo Álvarez-Hernández,Omar Chassin-Noria,Alba Irene Varela-Murillo,María Guadalupe Zavala-Páramo,Horacio Cano-Camacho,Gerardo Vazquez-Mar 한국미생물학회 2011 The journal of microbiology Vol.49 No.5

        The genetic diversity and population structure of Escherichia coli isolates from small-scale dairy farms were used to assess the ability of E. coli to spread within the farm environment and between neighboring farms. A total of 164 E. coli isolates were obtained from bovine feces, bedding, cow teats and milk from 6 small-scale dairy farms. Ward’s clustering grouped the isolates into 54 different random amplified polymorphic DNA (RAPD) types at 95% similarity, regardless of either the sample type or the farm of isolation. This suggests that RAPD types are shared between bovine feces, bedding, cow teats, and milk. In addition, transmission of RAPD types between the studied farms was suggested by the Ward grouping pattern of the isolates, Nei’s and AMOVA population analyses, and genetic landscape shape analysis. For the first time, the latter analytical tool was used to assess the ability of E. coli to disseminate between small-scale dairy farms within the same producing region. Although a number of dispersal mechanisms could exist between farms, the genetic landscape shape analysis associated the flow of E. coli RAPD types with the movement of forage and milking staff between farms. This study will aid in planning disease prevention strategies and optimizing husbandry practices.

      • Integrated Safety and Tolerability of Daclatasvir plus Asunaprevir in Patients with Chronic HCV Genotype 1b Infection

        ( L. Wei ),( K. Chayama ),( W. L. Chuang ),( S. H. Bae ),( J. Y. Jang ),( R. Bhore ),( V. Vazquez ),( L. Mo ),( M. Linaberry ),( M. Treitel ),( H. Kumada ) 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1

        Aims: The combination of daclatasvir (DCV) plus asunaprevir (ASV)has demonstrated high sustained virologic response (SVR) rates andis generally well tolerated in clinical studies. This integrated analysisevaluated the safety profile of DCV (60mg once daily) and ASV (100mgsoftgel capsule or 200mg tablets twice daily in genotype 1b (GT1b)infected patients enrolled in four phase 3 and two phase 2 clinicalstudies conducted globally, including Asia.Methods: Integrated safety data from 1218 treatment-naive or treatment-experienced patients were analyzed for adverse events (AEs),serious AEs, discontinuations due to AEs and grade 3/4 AEs andlaboratory abnormalities reported on-treatment.Results: Patients were 58% female, median age was 58 years and23% had compensated cirrhosis. DCV+ASV was associated with infrequentserious AEs and discontinuations due to AEs (Table). Twelvepatients reported treatment-related serious AEs. The most commonAEs (any grade) were diarrhea, nausea, fatigue, and headache. Onepatient died due to coronary heart disease (not treatment-related).The most common grade 3/4 laboratory abnormalities were aminotransferaseelevations (more frequent among Japanese patients); however,all grade 3/4 laboratory abnormality occurred in <5% of patientsoverall. Grade 3/4 total bilirubin elevations were reported in <1%of patients. The DCV+ASV safety profile was similar in patients withor without cirrhosis.Conclusions: DCV+ASV was generally well tolerated across globalnon-Asian patient populations and in Asian patients from Japan, mainlandChina, Korea, and Taiwan.

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