Vol. 55.Issue. 1. January - March 2023 | Revista Argentina de Microbiología

ISSN: 0325-7541

Revista Argentina de Microbiología is published by the Asociación Argentina de Microbiología (AAM) on a quarterly basis. The aim of this journal is to publish current scientific works in the different areas of Microbiology and Parasitology. Some of the topics considered of special interest are: infections caused by bacteria, fungi, parasites and viruses; mechanisms of pathogenicity, and virulence factors; resistance to antimicrobial agents; taxonomy; epidemiology and phenotypic, immunologic and molecular diagnostic methods. RAM also publishes articles on microbial ecology and diversity, zoo- and phytopathogens and microorganisms of value for food, agronomic, industrial and environmental applications. With the purpose of covering basic aspects of research in the area, the journal is also interested in the publication of manuscripts on microorganism genomics, proteomics and enzymology, as well as in those articles dealing with regional impact.

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A study on the carriage of Staphylococcus aureus in psoriasis patients is presented.
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Carriage was higher in the group of psoriasis patients than in the control group.
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The frequency of isolation was directly related to the severity of the disease.
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No link of phenotypic or virulence trait of S. aureus to psoriasis was found.
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Transcriptomics will answer if specific S. aureus genes are linked to psoriasis.

Open access

Diversidad de especies de Candida recuperadas de la cavidad bucal de pacientes oncológicos en Barranquilla, Colombia

Marisol Sánchez-Molina, Martha Rebolledo-Cobos, Margarita Filott-Tamara, Samir Viloria, Alfonso Bettín-Martinez

Rev Argent Microbiol. 2023;55:12-9

Highlights

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La diversidad de especies del género Candida constituye un factor determinante en las infecciones fúngicas en pacientes con cáncer
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Los pacientes con cáncer son susceptibles a infecciones fúngicas como la candidiasis oral
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Candida albicans es el principal agente causal de infecciones fúngicas orales.

Open access

Study of the genetic diversity of Moraxella spp. isolates obtained from corneal abscesses

Karina L. Roitman, Lucía Cipolla, Patricia Minervini, Mónica Prieto

Rev Argent Microbiol. 2023;55:20-4

Highlights

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MALDI-TOF MS is a reliable tool for identifying M. lacunata and M. nonliquefaciens.
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Using SmaI as restriction enzyme, PFGE is a useful technique for typing Moraxella species.
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Antibiotic susceptibility testing for M. lacunata is not standardized by the CLSI.

Open access

Agentes antimicrobianos

Antimicrobial resistance dissemination associated with intensive animal production practices in Argentina: A systematic review and meta-analysis

Barbara Prack McCormick, María P. Quiroga, Verónica E. Álvarez, Daniela Centrón, Pablo Tittonell

Rev Argent Microbiol. 2023;55:25-42

Highlights

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AMR and multidrug resistance associated with the animal and the production system.
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Higher prevalence of AMR in swine and chicken, and intensive production.
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Lower prevalence of AMR in cattle, and in extensive production/family farming.
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There is a research gap regarding prevalence of AMR in beef-cattle from feedlot.
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Need for restriction of highest priority antimicrobials in food-producing animals.

Open access

Characterization of third generation cephalosporin-resistant Escherichia coli clinical isolates from Ushuaia, Argentina

Ivan Gramundi, Ezequiel Albornoz, Manuel Boutureira, Melina Rapoport, Sonia Gomez, Alejandra Corso, Gabriel Castro, Diego Faccone

Rev Argent Microbiol. 2023;55:43-8

Highlights

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Characterization of third generation cephalosporin-resistant Escherichia coli clinical isolates from Ushuaia, Argentina.
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32 third generation cephalosporin-resistant E. coli from Ushuaia, Argentina were studied.
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International high-risk clones ST131, ST617 and ST405 were detected.
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CTX-M ESBL was the main mechanism of resistance to third generation cephalosporins.
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Whole genome sequence analysis of 7 MDR E. coli allowed full characterization of these isolates.

Open access

Microbiología clínica y enfermedades infecciosas

Seroprevalence of human leptospirosis in a rural community from Tandil, Argentina. Assessment of risk factors and spatial analysis

Julia A. Silva, Exequiel A. Scialfa, Matías Tringler, Marcelo G. Rodríguez, Adela Tisnés, Santiago Linares, Mariana A. Rivero

Rev Argent Microbiol. 2023;55:49-59

Highlights

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Epidemiologic and spatial analysis of leptospirosis can be applied in human population.
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Information about leptospirosis in rural areas is scarce.
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Preventive measures can be applied for human leptospirosis from rural areas.

Open access

Helicobacter pylori infection: A balance between bacteria and host

Pamela Bucci, Yanina Barbaglia, Fabián Tedeschi, Fabián Zalazar

Rev Argent Microbiol. 2023;55:60-7

Highlights

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H. pylori genotypes and SNP-174G>C IL-6 in patients with gastritis were evaluated.
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More virulent genotypes and -174G/G IL-6 were found in active chronic gastritis IM+.
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Our results can be useful to identify patients at greater risk for adenocarcinoma.

Open access

Bloodstream infection by Rhodococcus corynebacterioides in a pediatric patient diagnosed with high-risk retinoblastoma

Ana Rosa Méndez-Cruz, Georgina Elizabeth Félix-Bermúdez, Dinora Virginia Aguilar-Escobar, Lourdes Vega-Vega, Aurea Itzel Morales-Estrada, Araceli Contreras-Rodríguez

Rev Argent Microbiol. 2023;55:68-72

Highlights

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R. corynebacterioides is considered as an opportunistic pathogen in humans.
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R. corynebacterioides is underestimated as cause of bacteremia in cancer patients.
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16S rRNA sequence analysis confirmed the identification of R. corynebacterioides.

Open access

Clostridioides difficile: Characterization of the circulating toxinotypes in an Argentinean public hospital

Andrea N. Crivaro, Paula Carasi, Ileana Salto, Ayelen Hugo, P. Cecilia Soldavini Pelichotti, Agustina Bengoa, Melisa Fragomeno, María A. Serradell, ... Fernando M. Trejo

Rev Argent Microbiol. 2023;55:73-82

Highlights

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Toxinotypes 0, I and VIII circulate in the same hospital.
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Toxinotype VIII is the most prevalent.
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Occurrence of toxinotype I (one isolate) is compatible with the introduction of microorganisms from external sources.
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Isolates associated to fatal outcomes (GCD13, GCD14 and GCD22) are situated in regions of the biplots related to altered laboratory values at admission.

Dr. Eduardo Alul passed away on April 13, 2021.

Open access

Caso autóctono de rickettsiosis por Rickettsia parkeri en la Selva Paranaense, Misiones, Argentina

Katherina A. Vizcaychipi, Mabel D. Giménez, Natalia Casas, Susana Lloveras, Gabriel L. Cicuttin, Daniela Lamattina, Javier Marx, Williams Pedrozo, ... Rita Armitano

Rev Argent Microbiol. 2023;55:83-7

Highlights

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Rickettsia parkeri es una causa de rickettsiosis en Misiones, Argentina.
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El diagnóstico diferencial mejora la detección de rickettsiosis en zonas de arbovirus.
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Este hallazgo aporta a la epidemiología y al conocimiento médico regional.

Open access