Revista Argentina de microbiologia最新文献

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Mycosynthesis of silver nanoparticles using psychrotrophic strains of Tulasnella albida Bourdot & Galzin from the South Orkney Islands (Antarctica) 利用南奥克尼群岛(南极洲)的 Tulasnella albida Bourdot & Galzin 精神营养菌株合成银纳米粒子
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.04.004
Jesica M. Kobashigawa , Carolina A. Robles , Rocío F. Gaiser , Daniel C. Schinca , Lucía B. Scaffardi , Cecilia C. Carmarán
{"title":"Mycosynthesis of silver nanoparticles using psychrotrophic strains of Tulasnella albida Bourdot & Galzin from the South Orkney Islands (Antarctica)","authors":"Jesica M. Kobashigawa ,&nbsp;Carolina A. Robles ,&nbsp;Rocío F. Gaiser ,&nbsp;Daniel C. Schinca ,&nbsp;Lucía B. Scaffardi ,&nbsp;Cecilia C. Carmarán","doi":"10.1016/j.ram.2023.04.004","DOIUrl":"10.1016/j.ram.2023.04.004","url":null,"abstract":"<div><p>This study is the first report on mycosynthesis of silver nanoparticles (NPs) using psychrotrophic Antarctic filamentous fungi, and the first report regarding <em>Tulasnella</em> (Basidiomycota). In this work, the ability to synthesize silver NPs from cell free filtrates of strains of <em>Tulasnella albida</em> isolated from Antarctica was assessed. All fungal filtrates were capable of synthesizing silver NPs with the addition of AgNO<sub>3</sub>. UV–vis spectroscopy, TEM and SEM microscopy analyses were performed to characterize the synthesized NPs. ATR-FTIR and Micro Raman spectroscopy analyses were conducted to find functional groups responsible for the reduction of AgNO<sub>3</sub> and to detect the presence of silver oxide on the AgNPs. Theoretical calculations of optical absorption based on core-shell Ag–Ag<sub>2</sub>O were used to characterize the experimental absorption spectra of silver NPs colloids. Spherically shaped silver NPs, typically 2–3<!--> <!-->nm in diameter, were obtained. The largest ones showed a capping shell around them, which could be associated with the formation of small silver NPs. Functional groups corresponding to amides and alcohols were detected, confirming the presence of proteins as possible intermediates in the synthesis of AgNPs. On the other hand, the Micro Raman analysis confirms the presence of silver oxide on the surface of the AgNPs. This work presents a simple procedure for the synthesis of silver NPs using a psychrotrophic organism that could be interesting for the industry.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000329/pdfft?md5=422df7ad0b5aaf226ae158a99bcb8d32&pid=1-s2.0-S0325754123000329-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10029787","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
Impact of the multiplex molecular FilmArray Respiratory Panel on antibiotic prescription and clinical management of immunocompromised adults with suspected acute respiratory tract infections: A retrospective before–after study 多重分子 FilmArray Respiratory Panel 对抗生素处方和疑似急性呼吸道感染的免疫受损成人临床管理的影响:前后回顾性研究
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.03.001
Silvina Bergese , Bárbara Fox , Natalia García-Allende , María Elisa Elisiri , Ana Elizabeth Schneider , Juan Ruiz , Sol Gonzalez-Fraga , Viviana Rodriguez , Liliana Fernandez-Canigia
{"title":"Impact of the multiplex molecular FilmArray Respiratory Panel on antibiotic prescription and clinical management of immunocompromised adults with suspected acute respiratory tract infections: A retrospective before–after study","authors":"Silvina Bergese ,&nbsp;Bárbara Fox ,&nbsp;Natalia García-Allende ,&nbsp;María Elisa Elisiri ,&nbsp;Ana Elizabeth Schneider ,&nbsp;Juan Ruiz ,&nbsp;Sol Gonzalez-Fraga ,&nbsp;Viviana Rodriguez ,&nbsp;Liliana Fernandez-Canigia","doi":"10.1016/j.ram.2023.03.001","DOIUrl":"10.1016/j.ram.2023.03.001","url":null,"abstract":"<div><p>This study aimed to assess the impact of the implementation of a rapid multiplex molecular FilmArray Respiratory Panel (FRP) on the medical management of immunocompromised patients from a community general hospital. We conducted a single-center, retrospective, and before–after study. Two periods were evaluated: before the implementation of the FRP (pre-FRP) from April 2017 to May 2018 and after the implementation of the FRP (post-FRP) from January to July 2019. The inclusion criteria were immunocompromised patients over 18 years of age with suspected acute respiratory illness tested by conventional diagnostic methods (pre-FRP) or the FilmArray™ Respiratory Panel v1.7 (post-FRP). A total of 142 patients were included, 64 patients in the pre-FRP and 78 patients in the post-FRP. The positive detection rate was significantly higher in the post-FRP (63% vs. 10%, <em>p</em> <!-->&lt;<!--> <!-->0.01). There were more patients receiving antimicrobial treatment in the pre-FRP compared with the post-FRP period (94% vs. 68%, <em>p</em> <!-->&lt;<!--> <!-->0.01). A decrease in beta-lactam (89% vs. 61%, <em>p</em> <!-->&lt;<!--> <!-->0.01) and macrolide (44% vs. 13%, <em>p</em> <!-->&lt;<!--> <!-->0.01) prescriptions were observed in the post-FRP. No differences were observed in oseltamivir use (22% vs. 13%, <em>p</em> <!-->=<!--> <!-->0.14), changes in antimicrobial treatment, hospital admission rate, days-reduction in droplet isolation precautions, hospital length of stay (LOS), admission to intensive care unit (ICU), LOS in ICU, treatment failure and 30-day mortality. The implementation of the FRP impacted patient care by improving diagnostic yield and optimizing antimicrobial treatment in immunocompromised adult patients.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000263/pdfft?md5=d7ff7630047efdf055c829184e1a1aab&pid=1-s2.0-S0325754123000263-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9451024","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
Beneficios ecológicos y biológicos del hongo cosmopolita Trichoderma spp. en la agricultura: una perspectiva en el campo mexicano 世界性真菌毛霉菌属在农业中的生态和生物益处:墨西哥田野的视角
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.06.005
Petra Andrade-Hoyos , Mally N. Rivera-Jiménez , Nadia Landero-Valenzuela , Hilda V. Silva-Rojas , Saira J. Martínez-Salgado , Omar Romero-Arenas
{"title":"Beneficios ecológicos y biológicos del hongo cosmopolita Trichoderma spp. en la agricultura: una perspectiva en el campo mexicano","authors":"Petra Andrade-Hoyos ,&nbsp;Mally N. Rivera-Jiménez ,&nbsp;Nadia Landero-Valenzuela ,&nbsp;Hilda V. Silva-Rojas ,&nbsp;Saira J. Martínez-Salgado ,&nbsp;Omar Romero-Arenas","doi":"10.1016/j.ram.2023.06.005","DOIUrl":"10.1016/j.ram.2023.06.005","url":null,"abstract":"<div><p>There is currently an extensive record of scientific studies on the general characteristics of filamentous fungus <em>Trichoderma</em> spp., which demonstrates its wide range of interrelation in ecosystems and its fungal activity that benefits the agricultural sector and agroindustry, as well as its importance in the preservation and restoration of the soil microbiota. The success of the biological and ecological benefits of <em>Trichoderma</em> is due to its reproductive capacity, as well as its efficiency in the use of soil nutrients; the efficacy of the genus has been reported against a variety of phytopathogenic fungi, as well as the potential to synthesize and release enzymes (cellulases, xylanases, and chitinases) that have been implemented in agroindustrial bioprocesses. It has also been reported that various species of <em>Trichoderma</em> spp. can produce auxins and gibberellin-type growth regulators, reported as growth promoters of some agricultural crops; however, their most relevant fact is their ability to prevail at certain doses of ‘agrotoxic’ active ingredients and contribute studies regarding processes for obtaining biofuel and bioremediation of the agricultural soil. In this overview, a general description of the current and relevant studies of the different subspecies of <em>Trichoderma</em> and their contribution in agriculture is made, presenting results obtained <em>in vitro</em>, in greenhouses and in the field. This analysis will serve as a starting point for future research in Mexico, specifically on the genus <em>Trichoderma</em> and its benefits for the Mexican countryside.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000603/pdfft?md5=25f45ef0289f0426791fab6f80a37b39&pid=1-s2.0-S0325754123000603-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10229460","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
False positive NDM and OXA-48 results of the lateral flow carbapenem-resistant K.N.I.V.O. Detection K-set in Stenotrophomonas maltophilia: Time for official performance evaluation of LFAs? 嗜麦芽血单胞菌中抗碳青霉烯类K.N.I.V.O.检测K-set的NDM和OXA-48假阳性结果:是对 LFA 进行正式性能评估的时候了吗?
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.04.005
Georgios Meletis, Areti Tychala, Paraskevi Mantzana, Lemonia Skoura, Efthymia Protonotariou
{"title":"False positive NDM and OXA-48 results of the lateral flow carbapenem-resistant K.N.I.V.O. Detection K-set in Stenotrophomonas maltophilia: Time for official performance evaluation of LFAs?","authors":"Georgios Meletis,&nbsp;Areti Tychala,&nbsp;Paraskevi Mantzana,&nbsp;Lemonia Skoura,&nbsp;Efthymia Protonotariou","doi":"10.1016/j.ram.2023.04.005","DOIUrl":"10.1016/j.ram.2023.04.005","url":null,"abstract":"","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000500/pdfft?md5=f0807720e29b41137b6ef99e8f3b3c0c&pid=1-s2.0-S0325754123000500-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10074325","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
Identification, phylogenetic analysis, and genome mining of the tetracycline-resistant Bacillus thuringiensis strain m401 reveal its potential for biotechnological and biocontrol applications 耐四环素苏云金芽孢杆菌 m401 菌株的鉴定、系统发育分析和基因组挖掘揭示了其在生物技术和生物防治方面的应用潜力
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.05.002
Adriana M. Alippi , Florencia Lamelza , Gonzalo A. Torres Tejerizo , Eliana Abrahamovich , Ana C. López
{"title":"Identification, phylogenetic analysis, and genome mining of the tetracycline-resistant Bacillus thuringiensis strain m401 reveal its potential for biotechnological and biocontrol applications","authors":"Adriana M. Alippi ,&nbsp;Florencia Lamelza ,&nbsp;Gonzalo A. Torres Tejerizo ,&nbsp;Eliana Abrahamovich ,&nbsp;Ana C. López","doi":"10.1016/j.ram.2023.05.002","DOIUrl":"10.1016/j.ram.2023.05.002","url":null,"abstract":"<div><p><em>Bacillus thuringiensis</em> is an entomopathogen belonging to the <em>Bacillus cereus</em> clade. We isolated a tetracycline-resistant strain called m401, recovered it from honey, and identified it as <em>Bacillus thuringiensis</em> sv. <em>kumamotoensis</em> based on the average nucleotide identity calculations (ANIb) comparison and the analysis of the <em>gyrB</em> gene sequences of different <em>B. thuringiensis</em> serovars. Sequences with homology to virulence factors [<em>cytK</em>, <em>nheA</em>, <em>nheB</em>, <em>nheC</em>, <em>hblA</em>, <em>hblB</em>, <em>hblC</em>, <em>hblD</em>, <em>entFM</em>, and <em>inhA</em>] and tetracycline resistance genes [<em>tet(45)</em>, <em>tet(V)</em>, and <em>tet(M)/tet(W)/tet(O)/tet(S)</em> family] were identified in the bacterial chromosome. The prediction of plasmid-coding regions revealed homolog sequences to the MarR and TetR/AcrR family of transcriptional regulators, toxins, and lantipeptides. The genome mining analysis revealed 12 regions of biosynthetic gene clusters responsible for synthesizing secondary metabolites. We identified biosynthetic gene clusters coding for bacteriocins, siderophores, ribosomally synthesized post-translationally modified peptide products, and non-ribosomal peptide synthetase clusters that provide evidence for the possible use of <em>Bt</em> m401 as a biocontrol agent. Furthermore, <em>Bt</em> m401 showed high inhibition against all <em>Paenibacillus larvae</em> genotypes tested <em>in vitro.</em> In conclusion, <em>Bt</em> m401 owns various genes involved in different biological processes, such as transductional regulators associated with antibiotic resistance, toxins, and antimicrobial peptides with potential biotechnological and biocontrol applications.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000482/pdfft?md5=c693bada7d017efe7c27f33d76e55046&pid=1-s2.0-S0325754123000482-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9744433","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
Antimicrobial Resistance: A global, multisectoral concern that requires a coordinated response 抗生素耐药性:需要协调应对的全球多部门问题
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.11.003
Marcelo Galas
{"title":"Antimicrobial Resistance: A global, multisectoral concern that requires a coordinated response","authors":"Marcelo Galas","doi":"10.1016/j.ram.2023.11.003","DOIUrl":"https://doi.org/10.1016/j.ram.2023.11.003","url":null,"abstract":"","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123001074/pdfft?md5=e49b88ad7bceddf6715c5045fe28e296&pid=1-s2.0-S0325754123001074-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138821945","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
Surveillance of Shiga toxin-producing Escherichia coli associated bloody diarrhea in Argentina 对阿根廷与血性腹泻相关的产志贺毒素大肠埃希菌进行监测
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.03.003
Marta Rivas , Mariana Pichel , Mariana Colonna , Adrián López Casanello , Laura F. Alconcher , Jimena Galavotti , Iliana Principi , Sofía Pérez Araujo , Flavia B. Ramírez , Gladys González , Luis A. Pianciola , Melina Mazzeo , Ángela Suarez , Sebastián Oderiz , Lidia F.R. Ghezzi , Diego J. Arrigo , José H. Paladini , María R. Baroni , Susana Pérez , Ana Tamborini , Luis Marcelo Casabona
{"title":"Surveillance of Shiga toxin-producing Escherichia coli associated bloody diarrhea in Argentina","authors":"Marta Rivas ,&nbsp;Mariana Pichel ,&nbsp;Mariana Colonna ,&nbsp;Adrián López Casanello ,&nbsp;Laura F. Alconcher ,&nbsp;Jimena Galavotti ,&nbsp;Iliana Principi ,&nbsp;Sofía Pérez Araujo ,&nbsp;Flavia B. Ramírez ,&nbsp;Gladys González ,&nbsp;Luis A. Pianciola ,&nbsp;Melina Mazzeo ,&nbsp;Ángela Suarez ,&nbsp;Sebastián Oderiz ,&nbsp;Lidia F.R. Ghezzi ,&nbsp;Diego J. Arrigo ,&nbsp;José H. Paladini ,&nbsp;María R. Baroni ,&nbsp;Susana Pérez ,&nbsp;Ana Tamborini ,&nbsp;Luis Marcelo Casabona","doi":"10.1016/j.ram.2023.03.003","DOIUrl":"10.1016/j.ram.2023.03.003","url":null,"abstract":"<div><p>In Argentina, hemolytic uremic syndrome (HUS) caused by Shiga toxin-producing <em>Escherichia coli</em> (STEC-HUS) infection is endemic, and reliable data about prevalence and risk factors have been available since 2000. However, information about STEC-associated bloody diarrhea (BD) is limited. A prospective study was performed during the period October 2018–June 2019 in seven tertiary-hospitals and 18 referral units from different regions, aiming to determine (i) the frequency of STEC-positive BD cases in 714 children aged 1–9 years of age and (ii) the rate of progression of bloody diarrhea to HUS. The number and regional distribution of STEC-HUS cases in the same hospitals and during the same period were also assessed. Twenty-nine (4.1%) of the BD patients were STEC-positive, as determined by the Shiga Toxin Quik Chek (STQC) test and/or the multiplex polymerase chain reaction (mPCR) assay. The highest frequencies were found in the Southern region (Neuquén, 8.7%; Bahía Blanca, 7.9%), in children between 12 and 23 month of age (8.8%), during summertime. Four (13.8%) cases progressed to HUS, three to nine days after diarrhea onset. Twenty-seven STEC-HUS in children under 5 years of age (77.8%) were enrolled, 51.9% were female; 44% were Stx-positive by STQC and all by mPCR. The most common serotypes were O157:H7 and O145:H28 and the prevalent genotypes, both among BD and HUS cases, were <em>stx</em><sub>2a</sub>-only or -associated. Considering the endemic behavior of HUS and its high incidence, these data show that the rate of STEC-positive cases is low among BD patients. However, the early recognition of STEC-positive cases is important for patient monitoring and initiation of supportive treatment.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000287/pdfft?md5=85e7546695672578f876ab47e43051ce&pid=1-s2.0-S0325754123000287-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9655362","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
Estudio epidemiológico y serotipificación por PCR múltiple de Listeria monocytogenes aislada de matrices alimentarias en Argentina 对阿根廷食品基质中分离出的单核细胞增生李斯特菌进行流行病学研究和多重 PCR 血清分型
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.05.004
Yamila Figueroa , Jimena Gentiluomo , Agustina Grisaro , Mariana Buffoni , Nadia Zipenco , Adriana Sucari , Paula Buonfiglio , Magdalena Costa
{"title":"Estudio epidemiológico y serotipificación por PCR múltiple de Listeria monocytogenes aislada de matrices alimentarias en Argentina","authors":"Yamila Figueroa ,&nbsp;Jimena Gentiluomo ,&nbsp;Agustina Grisaro ,&nbsp;Mariana Buffoni ,&nbsp;Nadia Zipenco ,&nbsp;Adriana Sucari ,&nbsp;Paula Buonfiglio ,&nbsp;Magdalena Costa","doi":"10.1016/j.ram.2023.05.004","DOIUrl":"10.1016/j.ram.2023.05.004","url":null,"abstract":"<div><p><em>Listeria monocytogenes</em> is an opportunistic foodborne pathogen. It can resist stress conditions by adapting through the production of biofilms, which represents a serious problem for the food industry. It is classified into 14 serotypes, although only four (1/2a, 1/2b, 1/2c, and 4b) account for 89.0-98.0% of listeriosis cases worldwide. The objective of this study was to detect and serotype <em>L.</em> <em>monocytogenes</em> isolated from different food matrices from processing plants in Argentina. In the period 2016-2021, 1832 samples (meat, ready-to-eat foods, ice cream, dairy foods, and frozen vegetables) were analyzed, of which 226 (12.34%) isolates compatible with <em>L.</em> <em>monocytogenes</em> were detected. At the same time, environmental and surface samplings were performed in processing plants for ready-to-eat foods, sausages and dairy products, where environmental contamination with <em>L.</em> <em>monocytogenes</em> was detected in numerous critical points of the process, yielding a positivity rate of 22.7%. The molecular analysis of serogroups was performed, where it was observed that serogroup IIb was the most frequent with 66.5% (n<!--> <!-->=<!--> <!-->107), and in descending order IIc with 22.3% (n<!--> <!-->=<!--> <!-->36), and IIa (n<!--> <!-->=<!--> <!-->9) and IVb (n<!--> <!-->=<!--> <!-->9) with 5.6%. The serogroup mostly isolated in environmental monitoring was IIb. This work highlights the importance of the detection and serotyping of <em>L.</em> <em>monocytogenes</em> for taking actionable measures and identifying outbreaks, and is the first study in Argentina to describe an extensive study in food matrices.</p></div>","PeriodicalId":21163,"journal":{"name":"Revista Argentina de microbiologia","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0325754123000512/pdfft?md5=b109223bf7f4b5f58340204fa8c3fb83&pid=1-s2.0-S0325754123000512-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9854148","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
Optimización en la detección de bacteriemias. Uso integrado de FilmArray (BCID2) y MALDI-TOF 优化菌血症检测。综合使用 FilmArray (BCID2) 和 MALDI-TOF。
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.06.001
Natalia A. Carrion , Rodolfo E. Quiroz , Camila Asenzo , Manuela Gamarra , Antonio E. Flores , Maria Garcia , Rolando N. Soloaga , Julia Grigioni , Maria Mastroianni , Alejandra Margari , Facundo Molina , Adriana N. Procopio , Vanesa Reijtman , Maria S. Ratti , Victor Mamani , Myriam Vazquez , Diana Viale , Guadalupe Perez
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引用次数: 0
Corrigendum to “Placentitis and abortion caused by a multidrug resistant strain of Campylobacter fetus subspecies fetus in a sheep in Uruguay” Revista Argentina de Microbiología 54 (2022) 25-30 乌拉圭一只羊的胎盘炎和流产是由一株具有多重耐药性的胎儿弯曲杆菌亚种引起的 "Revista Argentina de Microbiología 54 (2022) 25-30
IF 1.9 4区 生物学
Revista Argentina de microbiologia Pub Date : 2023-10-01 DOI: 10.1016/j.ram.2023.11.002
Matías A. Dorsch , María L. Casaux , Lucía Calleros , Virginia Aráoz , Rubén D. Caffarena , Cecilia Monesiglio , Maila Barcellos , Caroline da Silva Silveira , Yisell Perdomo , Georgget Banchero , Francisco A. Uzal , Martín Fraga , Federico Giannitti
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引用次数: 0
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