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Solar Venero EC, Galeano MB, Luqman A, Ricardi MM, Serral F, Fernandez Do Porto D, Robaldi SA, Ashari BAZ, Munif TH, Egoburo DE, Nemirovsky S, Escalante J, Nishimura B, Ramirez MS, Götz F, Tribelli PM. Fever-like temperature impacts on Staphylococcus aureus and Pseudomonas aeruginosa interaction, physiology, and virulence both in vitro and in vivo. BMC Biol 2024; 22:27. [PMID: 38317219 PMCID: PMC10845740 DOI: 10.1186/s12915-024-01830-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 01/18/2024] [Indexed: 02/07/2024] Open
Abstract
BACKGROUND Staphylococcus aureus (SA) and Pseudomonas aeruginosa (PA) cause a wide variety of bacterial infections and coinfections, showing a complex interaction that involves the production of different metabolites and metabolic changes. Temperature is a key factor for bacterial survival and virulence and within the host, bacteria could be exposed to an increment in temperature during fever development. We analyzed the previously unexplored effect of fever-like temperatures (39 °C) on S. aureus USA300 and P. aeruginosa PAO1 microaerobic mono- and co-cultures compared with 37 °C, by using RNAseq and physiological assays including in vivo experiments. RESULTS In general terms both temperature and co-culturing had a strong impact on both PA and SA with the exception of the temperature response of monocultured PA. We studied metabolic and virulence changes in both species. Altered metabolic features at 39 °C included arginine biosynthesis and the periplasmic glucose oxidation in S. aureus and P. aeruginosa monocultures respectively. When PA co-cultures were exposed at 39 °C, they upregulated ethanol oxidation-related genes along with an increment in organic acid accumulation. Regarding virulence factors, monocultured SA showed an increase in the mRNA expression of the agr operon and hld, pmsα, and pmsβ genes at 39 °C. Supported by mRNA data, we performed physiological experiments and detected and increment in hemolysis, staphyloxantin production, and a decrease in biofilm formation at 39 °C. On the side of PA monocultures, we observed an increase in extracellular lipase and protease and biofilm formation at 39 °C along with a decrease in the motility in correlation with changes observed at mRNA abundance. Additionally, we assessed host-pathogen interaction both in vitro and in vivo. S. aureus monocultured at 39οC showed a decrease in cellular invasion and an increase in IL-8-but not in IL-6-production by A549 cell line. PA also decreased its cellular invasion when monocultured at 39 °C and did not induce any change in IL-8 or IL-6 production. PA strongly increased cellular invasion when co-cultured at 37 and 39 °C. Finally, we observed increased lethality in mice intranasally inoculated with S. aureus monocultures pre-incubated at 39 °C and even higher levels when inoculated with co-cultures. The bacterial burden for P. aeruginosa was higher in liver when the mice were infected with co-cultures previously incubated at 39 °C comparing with 37 °C. CONCLUSIONS Our results highlight a relevant change in the virulence of bacterial opportunistic pathogens exposed to fever-like temperatures in presence of competitors, opening new questions related to bacteria-bacteria and host-pathogen interactions and coevolution.
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Affiliation(s)
- E C Solar Venero
- Instituto De Química Biológica de La Facultad de Ciencias Exactas y Naturales-CONICET, Buenos Aires, Argentina
- Present addressDepartment of BiochemistrySchool of Medicine, Universidad Autónoma de Madrid and Instituto de Investigaciones Biomédicas Alberto Sols (Universidad Autónoma de Madrid-Consejo Superior de Investigaciones Científicas), Madrid, Spain
| | - M B Galeano
- Instituto De Química Biológica de La Facultad de Ciencias Exactas y Naturales-CONICET, Buenos Aires, Argentina
| | - A Luqman
- Department of Biology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - M M Ricardi
- IFIBYNE (UBA-CONICET), FBMC, FCEyN-UBA, Buenos Aires, Argentina
| | - F Serral
- Instituto del Calculo-UBA-CONICET, Buenos Aires, Argentina
| | | | - S A Robaldi
- Departamento de Química Biológica, FCEyN-UBA, Buenos Aires, Argentina
| | - B A Z Ashari
- Department of Biology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - T H Munif
- Department of Biology, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia
| | - D E Egoburo
- Departamento de Química Biológica, FCEyN-UBA, Buenos Aires, Argentina
| | - S Nemirovsky
- Instituto De Química Biológica de La Facultad de Ciencias Exactas y Naturales-CONICET, Buenos Aires, Argentina
| | - J Escalante
- Department of Biological Science, College of Natural Sciences and Mathematics, California State University Fullerton, Fullerton, CA, USA
| | - B Nishimura
- Department of Biological Science, College of Natural Sciences and Mathematics, California State University Fullerton, Fullerton, CA, USA
| | - M S Ramirez
- Department of Biological Science, College of Natural Sciences and Mathematics, California State University Fullerton, Fullerton, CA, USA
| | - F Götz
- Department of Microbial Genetics, Interfaculty Institute of Microbiology and Infection Medicine Tübingen (IMIT), University of Tübingen, Tübingen, Germany
| | - P M Tribelli
- Instituto De Química Biológica de La Facultad de Ciencias Exactas y Naturales-CONICET, Buenos Aires, Argentina.
- Departamento de Química Biológica, FCEyN-UBA, Buenos Aires, Argentina.
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Solar Venero EC, Galeano MB, Luqman A, Ricardi MM, Serral F, Fernandez Do Porto D, Robaldi SA, Ashari B, Munif TH, Egoburo DE, Nemirovsky S, Escalante J, Nishimura B, Ramirez MS, Götz F, Tribelli PM. Fever-like temperature impacts on Staphylococcus aureus and Pseudomonas aeruginosa interaction, physiology, and virulence both in vitro and in vivo. bioRxiv 2023:2023.03.21.529514. [PMID: 36993402 PMCID: PMC10055263 DOI: 10.1101/2023.03.21.529514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Background Staphylococcus aureus and Pseudomonas aeruginosa cause a wide variety of bacterial infections and coinfections, showing a complex interaction that involves the production of different metabolites and metabolic changes. Temperature is a key factor for bacterial survival and virulence and within the host, bacteria could be exposed to an increment in temperature during fever development. We analyzed the previously unexplored effect of fever-like temperatures (39°C) on S. aureus USA300 and P. aeruginosa PAO1 microaerobic mono- and co-cultures compared with 37°C, by using RNAseq and physiological assays including in-vivo experiments. Results In general terms both temperature and co-culturing had a strong impact on both PA and SA with the exception of the temperature response of monocultured PA. We studied metabolic and virulence changes on both species. Altered metabolic features at 39°C included arginine biosynthesis and the periplasmic glucose oxidation in S. aureus and P. aeruginosa monocultures respectively. When PA co-cultures were exposed at 39°C they upregulated ethanol oxidation related genes along with an increment in organic acid accumulation. Regarding virulence factors, monocultured SA showed an increase in the mRNA expression of the agr operon and hld, pmsα and pmsβ genes at 39°C. Supported by mRNA data, we performed physiological experiments and detected and increment in hemolysis, staphylxantin production and a decrease in biofilm formation at 39°C. On the side of PA monocultures, we observed increase in extracellular lipase and protease and biofilm formation at 39°C along with a decrease in motility in correlation with changes observed at mRNA abundance. Additionally, we assessed host-pathogen interaction both in-vitro and in-vivo . S. aureus monocultured at 39°C showed a decrease in cellular invasion and an increase in IL-8 -but not in IL-6- production by A549 cell line. PA also decreased its cellular invasion when monocultured at 39°C and did not induce any change in IL-8 or IL-6 production. PA strongly increased cellular invasion when co-cultured at 37°C and 39°C. Finally, we observed increased lethality in mice intranasally inoculated with S. aureus monocultures pre-incubated at 39°C and even higher levels when inoculated with co-cultures. The bacterial burden for P. aeruginosa was higher in liver when the mice were infected with co-cultures previously incubated at 39°C comparing with 37°C. Conclusion Our results highlight a relevant change in the virulence of bacterial opportunistic pathogens exposed to fever-like temperatures in presence of competitors, opening new questions related to bacteria-bacteria and host-pathogen interactions and coevolution.
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Montaña S, Fernandez JS, Barenboim M, Hernandez M, Kayriyama C, Carulla M, Iriarte A, Ramirez MS, Almuzara M. Whole-genome analysis and description of an outbreak due to carbapenem-resistant Ochrobactrum anthropi causing pseudo-bacteraemias. New Microbes New Infect 2018; 26:100-106. [PMID: 30345061 PMCID: PMC6191975 DOI: 10.1016/j.nmni.2018.09.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/04/2018] [Accepted: 09/04/2018] [Indexed: 11/24/2022] Open
Abstract
Ochrobactrum anthropi, a rare human pathogen, has been isolated predominantly from patients with catheter-related bacteraemia and rarely from other infections. In 2016, six cases of pseudo-bacteraemia caused by carbapenem-resistant O. anthropi isolates were recovered from an Argentinian hospital. The resistant phenotype exposed by the isolates caught our attention and led to an extensive epidemiologic investigation. Here we describe the characterization of a carbapenem-resistant O. anthropi outbreak whose probable cause was by contaminated collection tubes. The genome analysis of one strain revealed the presence of various resistant determinants. Among them, a metal-dependent hydrolase of the β-lactamase superfamily I, phnP, was found. Lately the recovery of unusual multidrug-resistant pathogens in the clinical setting has increased, thus emphasizing the need to implement standardized infection control practice and epidemiologic investigation to identify the real cause of hospital outbreaks.
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Affiliation(s)
- S Montaña
- Instituto de Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - J S Fernandez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, CA, USA
| | - M Barenboim
- Laboratorio de Bacteriologia, Hospital Interzonal de Agudos Eva Perón, San Martín, Provincia de Buenos Aires, Argentina
| | - M Hernandez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, CA, USA
| | - C Kayriyama
- Laboratorio de Bacteriologia, Hospital Interzonal de Agudos Eva Perón, San Martín, Provincia de Buenos Aires, Argentina
| | - M Carulla
- Laboratorio de Bacteriologia, Hospital Interzonal de Agudos Eva Perón, San Martín, Provincia de Buenos Aires, Argentina
| | - A Iriarte
- Laboratorio de Biología Computacional, Dpto de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - M S Ramirez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, CA, USA
| | - M Almuzara
- Laboratorio de Bacteriologia, Hospital Interzonal de Agudos Eva Perón, San Martín, Provincia de Buenos Aires, Argentina
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Montaña S, Palombarani S, Carulla M, Kunst A, Rodriguez CH, Nastro M, Vay C, Ramirez MS, Almuzara M. First case of bacteraemia due to Acinetobacter schindleri harbouring blaNDM-1 in an immunocompromised patient. New Microbes New Infect 2017; 21:28-30. [PMID: 29201380 PMCID: PMC5699874 DOI: 10.1016/j.nmni.2017.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 09/26/2017] [Accepted: 10/04/2017] [Indexed: 12/02/2022] Open
Abstract
Clinically significant NDM-1-producing Acinetobacter schindleri has not yet been described in the literature. We report the first case of bacteraemia due to an A. schindleri strain harbouring blaNDM-1 recovered from an immunocompromised patient. Our report reinforces the fact that NDM-1 can easily be acquired by Acinetobacter species.
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Affiliation(s)
- S Montaña
- Instituto de Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | | | - M Carulla
- Laboratorio de Bacteriologia, Argentina
| | - A Kunst
- Servicio de Infectología, Hospital Interzonal de Agudos Eva Perón, San Martín, Provincia de Buenos Aires, Argentina
| | - C H Rodriguez
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Cínicas José de San Martín, Ciudad Autónoma de Buenos Aires, Argentina
| | - M Nastro
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Cínicas José de San Martín, Ciudad Autónoma de Buenos Aires, Argentina
| | - C Vay
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Cínicas José de San Martín, Ciudad Autónoma de Buenos Aires, Argentina
| | - M S Ramirez
- Center for Applied Biotechnology Studies, Department of Biological Science, California State University Fullerton, Fullerton, California, USA
| | - M Almuzara
- Laboratorio de Bacteriologia, Argentina.,Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Laboratorio de Bacteriología, Departamento de Bioquímica Clínica, Hospital de Cínicas José de San Martín, Ciudad Autónoma de Buenos Aires, Argentina
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Ramirez MS, Xie G, Marshall SH, Hujer KM, Chain PSG, Bonomo RA, Tolmasky ME. Multidrug-resistant (MDR) Klebsiella pneumoniae clinical isolates: a zone of high heterogeneity (HHZ) as a tool for epidemiological studies. Clin Microbiol Infect 2012; 18:E254-8. [PMID: 22551038 DOI: 10.1111/j.1469-0691.2012.03886.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Comparison of genome-wide, high-resolution restriction maps of Klebsiella pneumoniae clinical isolates, including an NDM-1 producer, and in silico-generated restriction maps of sequenced genomes revealed a highly heterogeneous region we designated the 'high heterogeneity zone' (HHZ). The HHZ consists of several regions, including a 'hot spot' prone to insertions and other rearrangements. The HHZ is a characteristic genomic area that can be used in the identification and tracking of outbreak-causing strains.
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Affiliation(s)
- M S Ramirez
- Department of Biological Science, Center for Applied Biotechnology Studies, California State University Fullerton, Fullerton, CA 92831-3599, USA
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Ramirez MS, Rojas AM, Perez LA, Arias IA, Calles M, Aranguren A. Grand mal seizure and clobutinol overdose. Vet Hum Toxicol 1993; 35:444. [PMID: 8249270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We report the case of a previously healthy girl who developed a grand mal seizure after an inappropriate dose of clobutinol and had a good response to iv diazepam.
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Affiliation(s)
- M S Ramirez
- Hospital Dr Antonio M Pineda, Barquisimeto, Venezuela
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Soto E, Ochoa Z, Alvarado H, Espinoza OB, Irastorza IM, Ramirez MS. Pipazethate lethality in a baby. Vet Hum Toxicol 1993; 35:41. [PMID: 8434453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- E Soto
- Pediatric Department, Hospital Dr AM Pineda, Barquisimeto, Venezuela
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Pino F, Puerta H, D'Apollo R, Ferrer M, Arias I, Irastorza IM, Ramirez MS. Effectiveness of morphine in non-cardiogenic pulmonary edema due to chlorine gas inhalation. Vet Hum Toxicol 1993; 35:36. [PMID: 8434449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We report the case of an 11-yr-old boy who developed a non-cardiogenic pulmonary edema following inhalation of chlorine gas at a swimming pool. Rapid clinical improvement was noted after i.v. administration of morphine.
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Affiliation(s)
- F Pino
- Pediatric Department, Hospital Dr AM Pineda, Barquisimeto, Venezuela
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Barazarte V, Rodriguez Z, Ceballos S, Espinoza OB, Irastorza IM, Ramirez MS. Exchange transfusion in a case of severe theophylline poisoning. Vet Hum Toxicol 1992; 34:524. [PMID: 1287972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- V Barazarte
- Pediatric Department, Hospital Dr AM Pineda, Barquisimeto, Venezuela
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Guirola L, Garcia G, Torrealba A, Espinoza OB, Irastorza IM, Ramirez MS. Acute renal failure from the ingestion of toxic plants. Vet Hum Toxicol 1992; 34:548. [PMID: 1287978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- L Guirola
- Pediatric Department, Hospital Dr AM Pineda, Barquisimeto, Venezuela
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Espinoza OB, Perez M, Ramirez MS. Bitter cassava poisoning in eight children: a case report. Vet Hum Toxicol 1992; 34:65. [PMID: 1621366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Bitter cassava poisoning in 8 children is reported. The incidence of bright cherry-red blood is emphasized. These patients were in bad condition, but they survived although they received different therapies. Four of them were treated with sodium nitrite and thiosulfate and the remainder with hydroxocobalamin alone. This latter drug may be useful in less severe circumstances.
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Affiliation(s)
- O B Espinoza
- Centro Toxicologico Regional Centro Occidental, Hospital Dr AM Pineda, Barquisimeto, Venezuela
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Ramirez MS, Bastidas O, Bermudez EL. A suspected case of loperamide toxicity. Vet Hum Toxicol 1983; 25:341. [PMID: 6636507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ramirez MS. Auditing of nursing care plans. Superv Nurse 1975; 6:29, 32, 34-5 passim. [PMID: 1039823 DOI: 10.1097/00006247-197506000-00011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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