artículo académico

• Two Groups of Cocirculating, Epidemic Clostridiodes difficile Strains Microdiversify through Different Mechanisms.  Genome Biology and Evolution.  10:982-998. 2018
• A Clostridium difficile Lineage Endemic to Costa Rican Hospitals Is Multidrug Resistant by Acquisition of Chromosomal Mutations and Novel Mobile Genetic Elements .  Antimicrobial Agents and Chemotherapy.  61:e02054-16. 2017
• Investigación y desarrollo en ciencias exactas y naturales .  Journal of Analytical Methods in Chemistry.  2017. 2017
• A MLST Clade 2 Clostridium difficile strain with a variant TcdB induces severe inflammatory and oxidative response associated with mucosal disruption. .  Anaerobe.  40:76-84. 2016
• Analysis of TcdB Proteins within the Hypervirulent Clade 2 Reveals an Impact of RhoA Glucosylation on Clostridium difficile Proinflammatory Activities. .  Infection and Immunity.  84:856-865. 2016
• Predominance and high antibiotic resistance of the emerging Clostridium difficile genotypes NAPCR1 and NAP9 in a Costa Rican hospital over a 2-year period without outbreaks..  Emerging Microbes and Infections.  e42. 2016
• Emergence of an outbreak-associated Clostridium difficile variant with increased virulence. .  International Journal of Experimental Pathology.  53:1216-1226. 2015
• Predominance of carbapenem-resistant Pseudomonas aeruginosa isolates carrying blaIMP and blaVIM metallo-β-lactamases in a major hospital in Costa Rica. .  Journal of Medical Microbiology.  64:37-43. 2015
• Bioavailability of in-feed tetracyclines is influenced to a greater extent by crude protein rather than calcium .  Animal Feed Science and Technology.  198:323-332. 2014
• Hazard prioritization and risk characterization of antibiotics in an irrigated Costa Rican region used for intensive crop, livestock and aquaculture farming. .  Journal of Environmental Biology.  35:85-98. 2014
• Phenotypic and genotypic characterization of multidrug-resistant Bacteroides, Parabacteroides spp., and Pseudoflavonifractor from a Costa Rican hospital. .  Microbial Drug Resistance.  20:478-484. 2014
• Unravelling a vicious circle: animal feed marketed in Costa Rica contains irregular concentrations of tetracyclines and abundant oxytetracycline-resistant Gram-positive bacteria. .  Food Additives & Contaminants: Part A.  31:1017-1025. 2014
• [Toxigenic Bacillus cereus detection in lactic products with spices and dehydrated milk collected in Costa Rica]. .  Archivos latinoamericanos de nutrición.  59:402-406. 2014
• An overview of lysine-49 phospholipase A2 myotoxins from crotalid snake venoms and their structural determinants of myotoxic action.  Revista Panamericana de Salud Publica/Pan American Journal of Public Health.  34:364. 2013
• Isolation of a toxigenic and clinical genotype of clostridium difficile in retail meats in Costa Rica. .  Journal of Food Protection.  76:348-351. 2013
• Scarce detection of mobile erm genes associated with tetQ in Bacteroides and Parabacteroides from Costa Rica. .  Anaerobe.  21:18-21. 2013
• Tetracycline and 4-epitetracycline modified the in vitro catabolic activity and structure of a sediment microbial community from a tropical tilapia farm idiosyncratically. .  Journal of Environmental Science and Health, Part B.  48:291-301. 2013
• A novel green chemistry method for nonaqueous extraction and high-performance liquid chromatography detection of first-, second-, and third-generation tetracyclines, 4-epitetracycline, and tylosin in animal feeds. .  Journal of Agricultural and Food Chemistry.  60:7121-7128. 2012
• Exposure of a Tropical Soil to MG/KG of Oxytetracycline Elicits Hormetic Responses in the Catabolic Activities of Its Microbial Community. .  International Hormesis Society.  9:434-441. 2011
• Emergence of Clostridium difficile NAP1 in Latin America. .  International Journal of Experimental Pathology.  48:669-670. 2010
• [Microbiological evaluation of ready-to-eat foods manufactured by small Costa Rican industries]. .  Archivos latinoamericanos de nutrición.  60:179-183. 2010
• A new muscle damaging toxin, myotoxin II, from the venom of the snake Bothrops asper (terciopelo).  Acta Tropica.  27:589-596. 2008
• Isolates of Clostridium perfringens recovered from Costa Rican patients with antibiotic-associated diarrhoea are mostly enterotoxin-negative and susceptible to first-choice antimicrobials. .  Journal of Medical Microbiology.  57:343-347. 2008
• Enzymatic activities of bacteria isolated from the digestive tract of caterpillars and the pupal content of Automeris zugana and Rothschildia lebeau (Lepidoptera: Saturniidae).  Revista de Biología Tropical.  55:401-415. 2007
• Bacillus thuringiensis in caterpillars and associated materials collected from protected tropical forests in northwestern Costa Rica..  Revista de Biología Tropical.  54:265-271. 2006
• Lettuce for human consumption collected in Costa Rica contains complex communities of culturable oxytetracycline- and gentamicin-resistant bacteria..  Applied and Environmental Microbiology.  72:5870-5876. 2006
• Local tissue damage induced by BaP1, a metalloproteinase isolated from Bothrops asper (Terciopelo) snake venom.  Blackburn, Nicholas B..  63:186-199. 1995