A5091278899- Salmonella and Campylobacter epidemiology
- Antimicrobial Resistance in Staphylococcus
- Microbial infections and disease research
- Animal Nutrition and Physiology
- Antibiotic Resistance in Bacteria
- Veterinary medicine and infectious diseases
- Bacterial Identification and Susceptibility Testing
- Aquaculture disease management and microbiota
- Streptococcal Infections and Treatments
- Bacterial biofilms and quorum sensing
- Pharmaceutical and Antibiotic Environmental Impacts
- Microbial Metabolism and Applications
- Animal Disease Management and Epidemiology
- Antibiotics Pharmacokinetics and Efficacy
- Listeria monocytogenes in Food Safety
- Agricultural and Food Production Studies
- Vitamin C and Antioxidants Research
- Clostridium difficile and Clostridium perfringens research
- Psidium guajava Extracts and Applications
- Veterinary Oncology Research
- Animal Virus Infections Studies
- Animal Behavior and Welfare Studies
- Viral gastroenteritis research and epidemiology
- Food Safety and Hygiene
- Pharmacological Effects and Assays
Universidad Nacional de La Plata
2010-2024
Central University of Ecuador
2022
Tokyo University of Agriculture
1993
The University of Tokyo
1993
Staphylococcus pseudintermedius is the leading cause of pyoderma in dogs and frequent use antimicrobial treatment associated to development resistance nearly all classes antibiotics. Despite S. significance, our understanding molecular mechanism β-lactam its genetic diversity remains limited. We aimed to: i) determine phenotypic profile methicillin resistant (MRSP) isolated from infected three different veterinary hospitals Buenos Aires, Argentina; ii) identify SCCmec elements genes; iii)...
To define the species of Campylobacter harboring in intestine calves and adult cattle to examine their distribution among different age groups farms, 34 60 raised 6 farms 3 areas were studied. Campylobacters detected feces obtained from healthy (97.1%) less than 1-year-old but much frequently found (46.7%). Young harbored more cattle. The isolation rate campylobacters differed depending upon examined. C. jejuni, hyointestinalis fetus subsp. isolated 61.8, 26.5, 26.5% calves, respectively....
Staphylococcus pseudintermedius is the most common opportunistic pathogen in dogs and methicillin resistance (MRSP) has been identified as an emerging problem canine pyoderma. Here, we evaluated antimicrobial (AMR) features phylogeny of S. isolated from pyoderma cases Argentina (n = 29) United States 29). 62% isolates showed multi-drug resistance. The AMR genes found: mecA, blaZ, ermB, dfrG, catA, tetM, aac(6')-aph(2″), addition to tetK lnuA (only found U.S. isolates). Two point mutations...
Minimum inhibitory concentrations (MICs) were determined in vitro for 7 antibiotics (aivlosin, enrofloxacine, tylosin, tiamulin, kitasamycin, chlortetracycline, and oxytetracycline) against eight recent local Argentinean isolates two standard strains of Mycoplasma synoviae. Aivlosin (3-acetyl-4"-isovaleryl tylosin tartrate), tiamulin showed the lowest MICs with MIC90s 0.006, 0.012, 0.05 microg/ml, respectively. Except one strain that resistant values to chlortetracycline (> or = 12.5...
A 2-year-old female Border collie was examined for dermatitis with a partial alopecic zone around her left front member. Six months later the lesion became swollen, ulcerated areas. Microscopy analysis of samples showed numerous non-septate, branching, thin-walled and irregular shaped hyphal elements. Fungal cultures molecular studies identified Saksenaea vasiformis. Treatments griseofulvin, itraconazole surgical debridement were used, however, fourteen dog euthanatized because unfavorable...
Staphylococcus pseudintermedius is an opportunistic pathogen commonly associated with skin infections in dogs. Twenty-three methicillin-resistant S. (MRSP) isolated Argentina from dogs pyoderma were analyzed using whole genome sequencing (WGS) and classified into sequence types (ST) by multilocus typing (MLST) staphylococcal chromosome cassette mec (SCCmec) types.Based on the WGS analysis, MLST, SCCmec type results, we report for first time two MRSP strains, one each, belonging to...
Se estudiaron 28 aislamientos obtenidos de muestras clínicas perros e identificados por espectrometría masas (MALDI-TOF) como Staphylococcus pseudintermedius; el objetivo fue evaluar la sensibilidad a los antimicrobianos método difusión y establecer relación clonal entre electroforesis en campo pulsado (PFGE). La resistencia meticilina se evaluó mediante PCR amplificación del gen mecA observó 3/28 (10,7 %). Quince (53,6 %) presentaron alguno antibióticos ensayados 11 ellos (39,3 múltiple...
The aim of the study was to identify beta-haemolytic streptococci in vagina bitches who had delivered healthy litters and which neonatal deaths occurred. Fifty-one divided into two groups were used. Group 1 (G1) included 28 that group 2 (G2) 23 puppies died period. Two vaginal samples taken, one proestrus other at end gestation (EG). Beta-haemolytic Streptococcus (BS) isolated from 16 (57%) G1 21 (91%) G2. bacteriological cultures, serological tests (Streptex® ) PCR assay allowed...
The aim of this study was to determine the antimicrobial resistance profiles indicator bacteria isolated from domestic animal feces. Minimal inhibitory concentration (MIC) determined by agar dilution. Interpretative criteria on basis wild-type MIC distributions and epidemiological cutoff values (ECOFF or ECV) were used according ‘European Committee Antimicrobial Susceptibility Testing’ (EUCAST) data. Results 237 isolates Escherichia coli showed reduced susceptibility for ampicillin,...
The authors describe the problem of campylobacteriosis in a low-income community located southern Buenos Aires. Homes area were classified according to their total number inhabitants, children and animals living house amount poultry meat consumed. Samples taken from all different types homes that had been identified order isolate, identify type Campylobacter sp., using modified Skirrow technique, bio-chemical tests Lior technique respectively. prevalences found 16.96% dogs, 20% cats 40%...
The aim of this communication was to establish if Enterobacterales associated with gulls in Argentina harbored antimicrobial resistance (AMR) genes. We analyzed cloacal swabs two contrasting areas: Ensenada, Buenos Aires province (26 Larus dominicanus and 22 Chroicocephalus maculipennis) Puerto Madryn, Chubut (20 L. dominicanus). In bla CTX-M mcr-1 genes, were isolated from both gull species, whereas the only gene found. report for first time C. maculipennis as carrier AMR. finding AMR...
Since the mid-2000s, livestock-associated methicillin-resistant Staphylococcus aureus (LA-MRSA) has been identified among pigs worldwide, CC398 being most relevant LA-MRSA clone. In present work, nasal swabs were taken from healthy of different age categories (25 to 154 days) 2019 2021 in four intensive farms located three provinces Argentina. The aim study was characterize first isolates that colonized fattening Argentina terms their resistance phenotype and genotype know circulating clones...
ABSTRACT Campylobacter jejuni is an emerging pathogen that becoming more relevant due to the high percentage of isolations found in raw or undercooked poultry products. The objective present work was analyze and model mathematically effect storage temperature (+4 −2C), potassium sorbate concentration (0, 500 1,000 ppm) packaging plastic films different gas permeabilities (low permeability, polyethylene EVA SARAN EVA) on survival C. inoculated into chicken meat. Different models (linear,...
Se estudiaron 96 muestras provenientes de caninos que presentaban diferentes formasclínicas piodermia. El objetivo fue detectar, mediante pruebas fenotípicas, la presencia Staphylococcuspseudintermedius y, antibiograma, resistencia antimicrobiana a meticilina y aotros antimicrobianos uso común en práctica clínica, ambos métodos utilizados el laboratoriode diagnóstico veterinario. S. pseudintermedius se identificó 91 animales (94,8 %) resistenciaa detectó 31 cepas (34 %). De ellas, 21 (93,5...

 La Resistencia a Antimicrobianos (RAM) es la capacidad de las bacterias para evadir los antibióticos, siendo un problema mundial. [1] Los Enterococcus, son cocos gram positivas, forman parte microbiota intestinal algunos animales. Son consideradas centinela determinar perfiles resistencia antimicrobianos, por su fácil transferencia y adquisición genes. Existen reportes cepas Enterococcus en playas, como del microbioma muestras fecales pinzones Galápagos. [2,3]