Methicillin-resistant Staphylococcus aureus (MRSA) Isolated from Colombian Foods

Presencia de Enterobacteriaceae productoras de betalactamasa de espectro extendido (ESBL) en leche de tanque a granel de granjas lecheras bovinas en Antioquia, Colombia

“…However, relatively few studies have been conducted in Colombia on antibiotic resistance in foodproducing animals and their products (Vanegas López et al, 2012;Jiménez Velásquez et al, 2013;DonadoGodoy et al, 2015) compared to other countries and to our knowledge, this is the first study conducted to determine the occurrence of ESBL-producing Enterobacteriaceae in bulk-tank milk in Colombia.…”

Prevalence of Methicillin-Resistant Staphylococcus aureus and Other Staphylococcus Species in Raw Meat Samples Intended for Human Consumption in Benin City, Nigeria: Implications for Public Health

“…Dissemination of antimicrobials resistant and virulent genes within bacterial population could be another important factor. Vanegas-Lopez et al [3] showed that all 149/149 isolates that showed resistance to oxacillin using the conventional method amplified the mec A gene. Yang et al [27] revealed that 6/7 (85.71%) that were methicillin-resistant conventionally harbored the mec A gene.…”

“…Also, the occurrence of methicillin-resistant staphylococci from meats in open markets confirms that methicillin-resistant staphylococci are no longer only a problem for hospitals because they have entered the food chain, suggesting the dissemination of these resistant traits through horizontal gene transfer [1,2,3,4,5,6,7,8,9,10,12]. The tendency of Staphylococcus epidermidis to harbor the nuc gene could be attributed to the transfer of mobile genetic elements or horizontal gene transfer within bacterial populations as these isolates.…”

“…They are considered the third most significant cause of disease in the world among reported food-borne illnesses [3] coupled with their pathogenicity, which depends on various bacterial surface components [4]. Though the precise role of a particular virulent determinant in relation to infection is difficult to establish, the production of leucocidal toxins, which are expressed by leucocidal genes detected in the genome of staphylococcal isolates recovered from infections resulting in deep and soft tissue infections (furunculosis, severe necrotizing pneumonia and cutaneous abscesses), suggests an important virulence factor in staphylococci: that they harbor the panton-valentine leucocidin (PVL) gene [1,5] which is an attribute for community-acquired methicillin-resistant staphylococci isolates [5].…”

“…In recent years, methicillin-resistant staphylococci have been identified in animal-derived food products worldwide [1,2,3,4,5,7,8,9,10,11,12,13,14]. The methicillin resistance of staphylococci is mediated by the mec A gene, which is carried by a mobile genetic element known as the staphylococcal cassette chromosome mec (SCC mec ) [3]. The penicillin binding protein 2a (PBP2a) has a reduced affinity for beta-lactam antibiotics, resulting in resistance to most beta-lactam antimicrobial agents.…”