Daniel F. M. Monte

Universidade de São Paulo

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Nilton Lincopán

Universidade de São Paulo

Mariza Landgraf

Universidade de São Paulo

Celso José Bruno de Oliveira

Universidade Federal da Paraíba

Paula J. Fedorka‐Cray

North Carolina State University

Fábio P. Sellera

Universidade de São Paulo

Mauro de Mesquita Souza Saraiva

Universidade Estadual Paulista (Unesp)

ÂB

Ângelo Berchieri

Universidade Estadual Paulista (Unesp)

Siddhartha Thakur

North Carolina State University

Oliveiro Caetano de Freitas Neto

Universidade Federal de Minas Gerais

Louise Cerdeira

Liverpool School of Tropical Medicine

Cooperative Institutions

Universidade de São Paulo

Universidade Estadual Paulista (Unesp)

Universidade Federal da Paraíba

Hospital Universitário da Universidade de São Paulo

North Carolina State University

Universidade Federal de Minas Gerais

United States Food and Drug Administration

Blücher (Germany)

Universidade Estadual de Londrina

Center for Food Safety and Applied Nutrition

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Silent dissemination of colistin-resistant Escherichia coli in South America could contribute to the global spread of the mcr-1 gene

Eurosurveillance (2016)

Miriam R. Fernandes Quézia Moura Luciana Sartori Ketrin C. Silva Marcos PV Cunha

During a Brazilian multicentric antimicrobial resistance surveillance study, colistin resistance was investigated in 4,620 Enterobacteriaceae isolated from human, animal, food and environmental samples collected from 2000 to 2016. We present evidence that mcr-1-positive Escherichia coli has been emerging in South America since at least 2012, supporting a previous report on the possible acquisition of mcr-1-harbouring E. coli by European travellers visiting Latin American countries.

MCR-1

Colistin

10.2807/1560-7917.es.2016.21.17.30214

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Citations (215)

Molecular genotyping reveals inter-regional relatedness among antimicrobial resistant Salmonella Minnesota strains isolated from poultry farm and humans, Brazil

Brazilian Journal of Microbiology (2022)

João Moreira Daniel F. M. Monte Camila de Aguiar Lima Celso José Bruno de Oliveira Nélson Rodrigo da Silva Martins

Flock

10.1007/s42770-021-00666-1

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Citations (4)

Salmonella enterica serovars in absence of ttrA and pduA genes enhance the cell immune response during chick infections

Scientific Reports (2023)

Julia Memrava Cabrera Mauro de Mesquita Souza Saraiva Lucas Bocchini Rodrigues Alves Daniel F. M. Monte Rosemeri de Oliveira Vasconcelos

Abstract Salmonella spp. is one of the major foodborne pathogens responsible for causing economic losses to the poultry industry and bringing consequences for public health as well. Both the pathogen survival ability in the intestinal environment during inflammation as well as their relationship with the host immune system, play a key role during infections in poultry. The objective of this study was to quantify the presence of the macrophages and CD4 + /CD8 + cells populations using the immunohistochemistry technique, in commercial lineages of chickens experimentally infected by wild-type and mutant strains of Salmonella Enteritidis and Salmonella Typhimurium lacking ttr A and pdu A genes. Salmonella Enteritidis ∆ ttr A∆ pdu A triggered a higher percentage of the stained area than the wild-type, with exception of light laying hens. Salmonella Typhimurium wild-type strain and Salmonella Typhimurium ∆ ttr A∆ pdu A infections lead to a similar pattern in which, at 1 and 14 dpi, the caecal tonsils and ileum of birds showed a more expressive stained area compared to 3 and 7 dpi. In all lineages studied, prominent infiltration of macrophages in comparison with CD4 + and CD8 + cells was observed. Overall, animals infected by the mutant strain displayed a positively stained area higher than the wild-type. Deletions in both ttr A and pdu A genes resulted in a more intense infiltration of macrophages and CD4 + and CD8 + cells in the host birds, suggesting no pathogen attenuation, even in different strains of Salmonella .

Salmonella enterica

10.1038/s41598-023-27741-x

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Citations (4)

Highly virulent colistin-susceptible Salmonella Havana ST1524 carrying the mcr-9.1 gene in food

Microbial Pathogenesis (2024)

Daniel F. M. Monte Bruna Fuga Jesus G. M. Pariona Felipe Vásquez-Ponce Johana Becerra

MCR-1

Colistin

Salmonella enteritidis

10.1016/j.micpath.2024.107254

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Citations (0)

Genomic analysis of multidrug-resistant CTX-M-15-positive Klebsiella pneumoniae belonging to the highly successful ST15 clone isolated from a dog with chronic otitis

Journal of Global Antimicrobial Resistance (2020)

Fábio P. Sellera Ralf Lopes Daniel F. M. Monte Brenda Cardoso Fernanda Esposito

Extended-spectrum β-lactamase (ESBL)-producing Klebsiella pneumoniae have been increasingly reported worldwide as a frequent cause of human and animal infections. K. pneumoniae belonging to the K24 capsular serotype and sequence type (ST) ST15 has been considered a global successful clone responsible for the spread of the blaCTX-M-15 gene. To report the draft genome sequence of a multidrug-resistant CTX-M-15-positive K. pneumoniae K24-ST15 strain (L3KP1), which was isolated from a dog with chronic otitis. Genomic DNA was extracted and sequenced using Illumina NextSeq platform. De novo assembly was performed by SPAdes and in silico prediction accomplished by curated bioinformatics tools. The genome size was calculated at 5 642 348 bp, with a GC content of 57.11%, and comprising 5601 total genes, 52 tRNAs, 8 rRNAs, 9 ncRNAs and 105 pseudogenes. The K. pneumoniae L3KP1 strain belonged to ST15 and carried the yersiniabactin biosynthetic gene cluster [ybt 10 (YbST28) in the integrative conjugative element ICEKp4], and the KL24 locus encoding capsular serotype K24. Besides the blaCTX-M-15 ESBL gene, other clinically important resistance genes to β-lactams, aminoglycosides, fosfomycin, macrolides, phenicol, quinolones, sulfonamides, tetracyclines and trimethoprim were detected. Additionally, heavy metals and disinfectant resistance genes were also identified. This draft genome might be useful for comparative genomic analyses of the international clone of K. pneumoniae K24-ST15-CTX-M-15. In addition, information presented in this study also shed light on the urgent need to monitor ESBL-producing K. pneumoniae in veterinary hospitals.

Multilocus sequence typing

Klebsiella pneumonia

genomic DNA

10.1016/j.jgar.2020.06.017

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Citations (6)

Highly clonal relationship among Salmonella Enteritidis isolates in a commercial chicken production chain, Brazil

Brazilian Journal of Microbiology (2020)

Daniel F. M. Monte Cristiano Andrigheto Vinícius Buccelli Ribeiro Mariza Landgraf Maria Teresa Destro

Subtyping

Ribotyping

Salmonella enteritidis