Revista Argentina de microbiologia最新文献

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Identificación y sensibilidad antibiótica de aislamientos de Aeromonas spp. en un Hospital Universitario de la ciudad de Buenos Aires [布宜诺斯艾利斯某大学医院气单胞菌的鉴定及抗生素敏感性]。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-04-01 Epub Date: 2024-12-21 DOI: 10.1016/j.ram.2024.11.001
Eduardo Montalvo , Florencia Veiga , Hernán Rodríguez , German Traglia , Carlos Vay , Marisa Almuzara
{"title":"Identificación y sensibilidad antibiótica de aislamientos de Aeromonas spp. en un Hospital Universitario de la ciudad de Buenos Aires","authors":"Eduardo Montalvo ,&nbsp;Florencia Veiga ,&nbsp;Hernán Rodríguez ,&nbsp;German Traglia ,&nbsp;Carlos Vay ,&nbsp;Marisa Almuzara","doi":"10.1016/j.ram.2024.11.001","DOIUrl":"10.1016/j.ram.2024.11.001","url":null,"abstract":"<div><div><em>Aeromonas</em> spp. are opportunistic pathogens that cause both intra- and extraintestinal infections. The objective of this work was the phenotypic and genotypic characterization of a collection of <em>Aeromonas</em> strains, in addition to determining their sensitivity to different antimicrobials. Thirty seven isolates were analyzed. 54% were of intra-abdominal origin, 22% from skin and soft tissues, 19% from the bloodstream, among other less frequent sites. By amplification and sequencing of the <em>gyrB</em> gene, which was considered the reference method, the following were identified: 37,8% as species of the <em>Aeromonas hydrophila</em> complex, 32,4% as species of the <em>Aeromonas veronii</em> complex, and 29,7% as species of the complex <em>Aeromonas caviae</em>. Identification by traditional biochemical tests presented a better correlation with molecular identification than mass spectrometry (MALDI TOF MS). Regarding antibiotic sensitivity, cefotaxime, ceftazidime, cefepime, piperacillin-tazobactam, trimethoprim-sulfamethoxazole, ciprofloxacin, amikacin, gentamicin and nitrofurantoin showed activity on more than 80.0% of the isolates tested. The sensitivity and specificity of the phenotypic methods to determine the presence of carbapenemases in relation to the detection of the cphAgene, the reference method, was 60,9% and 100%, respectively, for the colorimetric assay (Blue Carba), and of 91,3% and 50,0% respectively, for the modified Hodge test. The overall resistance to colistin was 32,4%. The automated method showed a very higher error (VME) of 16,2%, while the rapid colorimetric screening method (CRTc) showed an excellent correlation (VME 0%) with the reference method, broth microdilution.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 2","pages":"Pages 105-113"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142877602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Endemic coronavirus in children and adults with acute respiratory infection before the COVID-19 pandemic COVID-19大流行前急性呼吸道感染儿童和成人中的地方性冠状病毒。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-04-01 Epub Date: 2025-01-22 DOI: 10.1016/j.ram.2024.11.003
Raquel Jara , Dafne Santos , Noelia Soledad Reyes , Eliana Hermida , Alejandro Seoane , Martin Ypas , Gisela Andres , Marcela Echavarría
{"title":"Endemic coronavirus in children and adults with acute respiratory infection before the COVID-19 pandemic","authors":"Raquel Jara ,&nbsp;Dafne Santos ,&nbsp;Noelia Soledad Reyes ,&nbsp;Eliana Hermida ,&nbsp;Alejandro Seoane ,&nbsp;Martin Ypas ,&nbsp;Gisela Andres ,&nbsp;Marcela Echavarría","doi":"10.1016/j.ram.2024.11.003","DOIUrl":"10.1016/j.ram.2024.11.003","url":null,"abstract":"<div><div>Acute respiratory infection (ARI) is one of the principal causes of morbidity worldwide, with respiratory viruses being common etiological agents. Among them, endemic human coronaviruses (hCoVs) including CoV-229E, CoV-OC43, CoV-NL63, and CoV-HKU1 can cause mild ARI but are usually not evaluated in the clinical setting. The aim of this work was to determine the prevalence of all respiratory pathogens, with the focus placed on endemic hCoVs in the pre-pandemic period. Circulating species, clinical associations and coinfections with other respiratory pathogens were evaluated in 510 immunocompetent patients (children and adults) with ARI using the FilmArray® Respiratory Panel (BioFire/bioMérieux). A total of 399 children (252 outpatients and 147 hospitalized) and 111 adult outpatients were enrolled in the pre-pandemic period (2008–2010 and 2016). Endemic hCoVs were the third and fifth more frequently detected viruses among adults and outpatient children, respectively, with an overall frequency close to 10%. The most prevalent species were CoV-OC43 (42.8%) and CoV-HKU1 (40.5%), followed by CoV-NL63 (19.0%) and CoV-229E (4.8%). Tachypnea, wheezing and chest indrawing were more frequent in hospitalized children compared to outpatients. All adult patients presented with symptoms of a common cold. Endemic hCoVs were detected year-round, primarily between June and November. Our results highlight their clinical relevance, and the need to include endemic hCoVs in routine screening. In the post-pandemic period, further long-term surveillance is needed for understanding the epidemiology of endemic hCoVs and their evolution, as a tool to anticipate the possible emergence of new species.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 2","pages":"Pages 161-170"},"PeriodicalIF":1.8,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143029554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced antimicrobial effects of carvacrol against methicillin-resistant Staphylococcus aureus strains using niosome formulations 使用niosome制剂增强carvacrol对耐甲氧西林金黄色葡萄球菌菌株的抗菌作用。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2025-01-21 DOI: 10.1016/j.ram.2024.10.001
Ronak Bakhtiari , Maliheh Shiri , Mohammad Reza Mohammadi , Mohammad Reza Pourmand , Amir Mirzaie , Zahra Taghiabadi
{"title":"Enhanced antimicrobial effects of carvacrol against methicillin-resistant Staphylococcus aureus strains using niosome formulations","authors":"Ronak Bakhtiari ,&nbsp;Maliheh Shiri ,&nbsp;Mohammad Reza Mohammadi ,&nbsp;Mohammad Reza Pourmand ,&nbsp;Amir Mirzaie ,&nbsp;Zahra Taghiabadi","doi":"10.1016/j.ram.2024.10.001","DOIUrl":"10.1016/j.ram.2024.10.001","url":null,"abstract":"<div><div>Methicillin-resistant <em>Staphylococcus aureus</em> (MRSA) causes a wide range of infections and contributes to elevated morbidity, mortality, and healthcare costs. Herbal compounds combined with drug delivery systems could be an effective alternative option for treating resistant bacteria. This study evaluates the antimicrobial prowess of carvacrol-loaded niosomes against MRSA strains. In this study, six carvacrol–niosome formulations with different ratios of Span and Tween were prepared. The physicochemical attributes of the optimized synthesized niosomes were assessed using Fourier-transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM) as well as DLS Zetasizer. Encapsulation efficiency (EE) and <em>in vitro</em> drug release were studied. The antibacterial activity of the synthesized carvacrol–niosomes, in concentrations varying between 7.8 and 1000<!--> <!-->μg/ml, was evaluated using microdilution broth methods. The optimized niosomes, with a size of 207.3<!--> <!-->nm and an impressive EE of 91%, exhibited a spherical structure as confirmed by the electron microscopy analysis. Impressively, these carvacrol–niosomes demonstrated superior antimicrobial effectiveness against <em>S. aureus</em>, reducing MIC levels 4-fold to 62.5<!--> <!-->±<!--> <!-->0.0<!--> <!-->μg/ml and MBC to 125<!--> <!-->±<!--> <!-->0.0<!--> <!-->μg/ml, a significant improvement over the 250<!--> <!-->±<!--> <!-->0.0<!--> <!-->μg/ml MIC and 500<!--> <!-->±<!--> <!-->0.0<!--> <!-->μg/ml MBC of free carvacrol. Additionally, while empty niosomes showed minimal cytotoxicity with 88.32<!--> <!-->±<!--> <!-->1.32% cell viability at 100<!--> <!-->μg/ml, free carvacrol led to a marked reduction in viability to 39.46<!--> <!-->±<!--> <!-->1.26%. However, niosomes encapsulating carvacrol notably increased cell survival to 59.67<!--> <!-->±<!--> <!-->1.62% at this concentration. These findings underscore the enhanced antimicrobial potency of carvacrol when enclosed within niosomes, suggesting its potential as a potent herbal remedy for combating methicillin-resistant <em>S. aureus</em>.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 39-48"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143024457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bartolinitis por Neisseria meningitidis: caso clínico [脑膜炎奈瑟菌引起的巴氏腺炎:临床病例]。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2024-11-19 DOI: 10.1016/j.ram.2024.10.004
Elena Berardinelli , Marcela Sokol , Laura Dufranc , Vanina Diaz , Viviana Eiras , Ariel Gianecini , Patricia Galarza , Paula Gagetti , Federico Lorenzo , Adriana Efron
{"title":"Bartolinitis por Neisseria meningitidis: caso clínico","authors":"Elena Berardinelli ,&nbsp;Marcela Sokol ,&nbsp;Laura Dufranc ,&nbsp;Vanina Diaz ,&nbsp;Viviana Eiras ,&nbsp;Ariel Gianecini ,&nbsp;Patricia Galarza ,&nbsp;Paula Gagetti ,&nbsp;Federico Lorenzo ,&nbsp;Adriana Efron","doi":"10.1016/j.ram.2024.10.004","DOIUrl":"10.1016/j.ram.2024.10.004","url":null,"abstract":"<div><div>Bartholinitis is the inflammation and infection of the Bartholin's glands that results from the accumulation of mucus in their ducts, the most frequent causal microorganisms being anaerobic and aerobic bacteria and those responsible for sexually transmitted infections. Those caused by agents not belonging to the genital microbiota are less frequent. Likewise, in most cases the diagnosis is clinical. Here, we describe the case of a 42-year-old heterosexual woman with a Bartholin's gland abscess caused by <em>Neisseria meningitidis</em>, isolated through culture and identified by VITEK®2. For molecular characterization and subtyping, the sequence type and clonal complex were determined using the multiple locus sequence typing technique. The antigenic profile was studied by amplification and sequencing of the genes coding for PorA, fHbp, NHBA and NadA and the susceptibility profile was assessed by MIC. Molecular diagnosis led to the confirmation of <em>N. meningitidis</em> as the pathogen responsible for bartholinitis.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 63-65"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142682618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intervención educativa como estrategia de prevención de parasitosis intestinales y valoración del estado enteroparasitológico en centros de desarrollo infantil de la ciudad de Santa Fe, Argentina [将教育干预作为预防肠道寄生虫病的策略,并评估阿根廷圣菲市儿童发展中心的肠道寄生虫病状况]。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2024-09-02 DOI: 10.1016/j.ram.2024.07.002
César Ernesto Gutiérrez , María Agustina Jaras Horno , Carolina Aro , Andrea Florencia Gómez Colussi , María Belén Cheirano , Érica Soledad Rodríguez , María Verónica Vera Garate , Guillermo García Effron , Sergio Adrián Guerrero
{"title":"Intervención educativa como estrategia de prevención de parasitosis intestinales y valoración del estado enteroparasitológico en centros de desarrollo infantil de la ciudad de Santa Fe, Argentina","authors":"César Ernesto Gutiérrez ,&nbsp;María Agustina Jaras Horno ,&nbsp;Carolina Aro ,&nbsp;Andrea Florencia Gómez Colussi ,&nbsp;María Belén Cheirano ,&nbsp;Érica Soledad Rodríguez ,&nbsp;María Verónica Vera Garate ,&nbsp;Guillermo García Effron ,&nbsp;Sergio Adrián Guerrero","doi":"10.1016/j.ram.2024.07.002","DOIUrl":"10.1016/j.ram.2024.07.002","url":null,"abstract":"<div><div>Intestinal parasitic diseases constitute a cosmopolitan public health concern, with greater prevalence in developing countries, and mainly affecting children. The aim of this study was to develop an educational intervention aimed at mothers/guardians of children attending three child development centers (CDI) in Santa Fe, Argentina, during 2018. An educational intervention was conducted using a descriptive, quasi-experimental design, with pre- and post-intervention assessment. This intervention included 36 mothers, and was carried out in three stages: diagnosis, intervention and final evaluation. Simultaneously, a coproparasitological study was performed on 48 children under 5 years of age, who were assisted in the CDI, with the aim to understand and address the parasitic infections prevalent in the child population. It was possible to compare the correct answers before and after the educational intervention, observing a statistically significant increase (<em>p</em> <!-->=<!--> <!-->0.008742) in the average number of correct answers. Enteroparasites were identified in 54% of the population of children analyzed, 10% were biparasitized and 6% had more than two parasitic species. The most frequently detected parasites were <em>Blastocystis</em> spp., <em>Giardia intestinalis</em> and <em>Ascaris lumbricoides</em>. The educational intervention was positive, resulting in an improvement in the level of knowledge related to intestinal parasitosis and its prevention. This educational intervention experience highlights the importance of ongoing education in promoting a healthy lifestyle and preventing parasitosis in vulnerable populations.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 8-13"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142126527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Staphylococcus aureus resistentes a meticilina aislados de teléfonos móviles de estudiantes de Enfermería en Cuenca, Ecuador [从厄瓜多尔昆卡护生手机中分离出耐甲氧西林金黄色葡萄球菌]。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2025-01-28 DOI: 10.1016/j.ram.2024.12.002
Nube María Tenezaca Lliguin , Paola Patricia Orellana Bravo , Carlos Fernando Andrade Tacuri , Jonnathan Gerardo Ortiz Tejedor
{"title":"Staphylococcus aureus resistentes a meticilina aislados de teléfonos móviles de estudiantes de Enfermería en Cuenca, Ecuador","authors":"Nube María Tenezaca Lliguin ,&nbsp;Paola Patricia Orellana Bravo ,&nbsp;Carlos Fernando Andrade Tacuri ,&nbsp;Jonnathan Gerardo Ortiz Tejedor","doi":"10.1016/j.ram.2024.12.002","DOIUrl":"10.1016/j.ram.2024.12.002","url":null,"abstract":"<div><div><em>Staphylococcus aureus</em> is an important pathogen in healthcare facilities, with its resistance to a number of antibiotics currently being a global concern. In this report the presence of <em>S.<!--> <!-->aureus</em>, resistance gene virulence and antibiotic susceptibility profiles were determined in the mobile phones of senior nursing students. <em>S.<!--> <!-->aureus</em> was isolated in 11.84% (9/76) of the samples. Furthermore, 44.44% of the mobile phones carried the <em>mecA</em> (MRSA) gene, while none carried the <em>vanA</em> gene. Virulence genes identified were 100% <em>hla</em>, 88.89% <em>hlb</em>, 22.22% <em>tst</em> and <em>sec</em>, and 11.11% <em>sea</em>. The antibiogram revealed that 33.33% of the strains were resistant to cefoxitin and 44.44% showed inducible resistance to clindamycin (ICRSA). The mobile phones of senior nursing students represent an important reservoir of drug-resistant and virulent strains of <em>S.<!--> <!-->aureus</em>, which could act as infectious foci for the transmission of this pathogen.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 54-58"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143067627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Symbiotic nitrogen-fixing rhizobia as a potential source of nitrous oxide emissions 共生固氮根瘤菌作为一种潜在的氧化亚氮排放源
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2025-02-11 DOI: 10.1016/j.ram.2025.01.003
Aníbal R. Lodeiro
{"title":"Symbiotic nitrogen-fixing rhizobia as a potential source of nitrous oxide emissions","authors":"Aníbal R. Lodeiro","doi":"10.1016/j.ram.2025.01.003","DOIUrl":"10.1016/j.ram.2025.01.003","url":null,"abstract":"","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 1-2"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Update of diagnostic methods in tuberculosis (TB) 结核病诊断方法的更新。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2025-01-18 DOI: 10.1016/j.ram.2024.12.008
Mario José Matteo , María Cecilia Latini , Davor Nicolás Martinovic , Marina Bottiglieri
{"title":"Update of diagnostic methods in tuberculosis (TB)","authors":"Mario José Matteo ,&nbsp;María Cecilia Latini ,&nbsp;Davor Nicolás Martinovic ,&nbsp;Marina Bottiglieri","doi":"10.1016/j.ram.2024.12.008","DOIUrl":"10.1016/j.ram.2024.12.008","url":null,"abstract":"<div><div>The WHO aims to reduce the number of deaths from TB by 95% and decrease its incidence rate by 90% between 2015 and 2035. The recommended rapid diagnostic tests are accurate and cost-effective, allow for a prompt start to treatment, and influence other outcomes that are important to the patient. To detect latent infection, the tuberculin skin test and interferon γ release (IGRA) tests are used. Although IGRA is an expensive test, it has greater specificity and is not affected by previous exposure to the BCG vaccine, among other advantages. For the diagnosis of active TB, smear microscopy is commonly employed. Culture is a more sensitive, but also more complex method. It constitutes the definitive diagnosis and allows phenotypic sensitivity tests to be performed. TB-LAM has limited sensitivity; however, unlike other methodologies, it has shown promising results in individuals living with HIV and CD4 T-cell counts below 200/mm<sup>3</sup>. Finally, among the molecular biology-based tests, commercial methods using real-time PCR allow mass diagnosis and sensitivity testing to first- and second-line drugs to be conducted within a few hours of receiving the sample. These are highly sensitive and specific tests, and their use is recommended as the initial diagnostic test in both pulmonary and extrapulmonary TB cases.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 49-53"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143010775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rapid discrimination of Salmonella Enteritidis from other serovars with MALDI-TOF MS in Argentina 在阿根廷利用 MALDI-TOF MS 快速区分肠炎沙门氏菌和其他血清型。
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2024-11-07 DOI: 10.1016/j.ram.2024.09.004
Agustina Costa, Florencia Catalano, Andrea Alcain, Marcela Panagopulo, Jesús Emmanuel Riquel Moyelak, Silvina Brengi, Mirian Moroni, María Rosa Viñas
{"title":"Rapid discrimination of Salmonella Enteritidis from other serovars with MALDI-TOF MS in Argentina","authors":"Agustina Costa,&nbsp;Florencia Catalano,&nbsp;Andrea Alcain,&nbsp;Marcela Panagopulo,&nbsp;Jesús Emmanuel Riquel Moyelak,&nbsp;Silvina Brengi,&nbsp;Mirian Moroni,&nbsp;María Rosa Viñas","doi":"10.1016/j.ram.2024.09.004","DOIUrl":"10.1016/j.ram.2024.09.004","url":null,"abstract":"<div><div><em>Salmonella</em> spp. is one of the most important zoonotic pathogens that causes foodborne diseases. It is divided into two species (<em>Salmonella bongori</em> and <em>Salmonella enterica</em>) including around 2600 serovars, being <em>S. enterica</em> serovar Enteritidis one of the most frequent in Argentina. Serovar identification is generally conducted by somatic and flagellar agglutination sera assays, and molecular biology techniques can also be performed. As efforts are being made worldwide to differentiate <em>Salmonella</em> serovars, our aim was to evaluate the utility of two specific biomarkers, previously reported for differentiating <em>S.</em> Enteritidis with MALDI-TOF MS. A panel of 105 <em>S. enterica</em> local isolates, belonging to different serovars and characterized by sera agglutination and PCR, was included in this study. Two specific <em>S.</em> Enteritidis biomarkers, at <em>m/z</em> 3016<!--> <!-->±<!--> <!-->3<!--> <!-->Da and 6034<!--> <!-->±<!--> <!-->3<!--> <!-->Da, were visually detected showing a sensitivity of 54% and 98%, respectively, and a specificity of 100% for both peaks. Concordance between serotyping and identification by PCR of <em>S.</em> Enteritidis and the blind search of biomarkers in a subset of isolates was 98%. Visual detection of these <em>S.</em> Enteritidis biomarkers using MALDI-TOF MS can be used as a fast and easy screening method for serovars differentiation at the microbiology clinical laboratory.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 24-32"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142627162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Potential use of Apis mellifera L. honey in the management of the cucurbit powdery mildew caused by Podosphaera xanthii (Castagne) under greenhouse conditions 蜜蜂蜂蜜在温室条件下治理瓜白粉病的潜在应用
IF 1.8 4区 生物学
Revista Argentina de microbiologia Pub Date : 2025-01-01 Epub Date: 2024-12-17 DOI: 10.1016/j.ram.2024.10.007
Juan Antonio Castro-Diego , Carlos Alfonso López-Orona , Verónica Delgado-Pacheco , Miguel Armando López-Beltrán , Nancy Ley-López , Walter Arturo Rubio-Aragón , Jorge Alberto Edeza-Urías
{"title":"Potential use of Apis mellifera L. honey in the management of the cucurbit powdery mildew caused by Podosphaera xanthii (Castagne) under greenhouse conditions","authors":"Juan Antonio Castro-Diego ,&nbsp;Carlos Alfonso López-Orona ,&nbsp;Verónica Delgado-Pacheco ,&nbsp;Miguel Armando López-Beltrán ,&nbsp;Nancy Ley-López ,&nbsp;Walter Arturo Rubio-Aragón ,&nbsp;Jorge Alberto Edeza-Urías","doi":"10.1016/j.ram.2024.10.007","DOIUrl":"10.1016/j.ram.2024.10.007","url":null,"abstract":"<div><div>Powdery mildew by <em>Podosphaera xanthii</em> (Castagne) is a major disease of greenhouse cucurbitaceous crops worldwide. Honey by honeybees has been reported as an antimicrobial for diseases in humans, animals, and plants. The aim of this study was to assess <em>Apis mellifera</em> honey against <em>P. xanthii</em> in cucumber plants. During nine consecutive weeks, four different honey concentrations (2.0%, 2.5%, 3.0% and 3.5%), a chemical control (Azoxystrobin) and an untreated check (water) were evaluated. Except for honey at 2%, every concentration was significantly different from the untreated check. Honey concentrations at 3% and 3.5% were found to be the most effective, and their area under disease progress curve (AUDP) was statistically comparable to that of Azoxystrobin with 1048.3, 642.3 and 575.8 AUDP, representing 72.4%, 83.1% and 84.8% of efficiency compared to the untreated check, respectively. These results provide preliminary information on the potential use of honey in managing strategies of the disease under greenhouse conditions.</div></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":"57 1","pages":"Pages 66-69"},"PeriodicalIF":1.8,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142855296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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