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Lei Y, Guo Q, Liu J, Huang H, Han P. Staphylococcus cohnii infection diagnosed by metagenomic next generation sequencing in a patient on hemodialysis with cirrhotic ascites: a case report. Front Cell Infect Microbiol 2023; 13:1240283. [PMID: 37808911 PMCID: PMC10556727 DOI: 10.3389/fcimb.2023.1240283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/04/2023] [Indexed: 10/10/2023] Open
Abstract
Background Patients with spontaneous bacterial peritonitis (SBP) often just receive empirical antibiotic therapy, as pathogens can be identified in only few patients using the techniques of conventional culture. Metagenomic next generation sequencing (mNGS) is a useful tool for diagnosis of infectious diseases. However, clinical application of mNGS in diagnosis of infected ascites of cirrhotic patients is rarely reported. Case presentation A 53-year-old male with cirrhosis on regular hemodialysis presented with continuous abdominal pain. After treatment with empiric antibiotics, his inflammatory parameters decreased without significant relief of abdominal pain. Finally, based on ascites mNGS detection, he was diagnosed as infection of Staphylococcus cohnii (S.cohnii), a gram-positive opportunistic pathogen. With targeted antibiotic treatment, the bacterial peritonitis was greatly improved and the patient's abdominal pain was significantly alleviated. Conclusions When conventional laboratory diagnostic methods and empirical antibiotic therapy fail, proper application of mNGS can help identify pathogens and significantly improve prognosis and patients' symptoms.
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Affiliation(s)
| | | | | | - Huanjun Huang
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Ping Han
- Department of Gastroenterology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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da Silva JG, Culuchi G, Pestana CP, da Silva Junior HC, Saraiva FB, Kugelmeier T, Rouede D, Pinto ACA, Pissinati T, D'Alincourt Assef AP, Rocha-de-Souza CM, E Oliveira TRT, Senna JPM. Staphylococcus nasal colonization in three species of non-human primates. Braz J Microbiol 2023:10.1007/s42770-023-00959-7. [PMID: 37016049 PMCID: PMC10072810 DOI: 10.1007/s42770-023-00959-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 03/29/2023] [Indexed: 04/06/2023] Open
Abstract
Bacterial nasal colonization is common in many mammals and Staphylococcus represents the main pathogen isolated. Staphylococcus nasal carriage in humans constitutes a risk factor for Staphylococcus infections pointing out the need for animal experimentation for nasal colonization studies, especially for vaccine development. A limitation in addressing this hypothesis has been a lack of appropriate animal model. Murine models do not mimic human nasal colonization studies. Non-human primates (NHP) remain the best classical models for nasal colonization studies. In this study, we analyzed nasal colonization between two species of Old World monkeys (cynomolgus and rhesus) and a New World monkey (squirrel monkey) from breeding colony at Fiocruz (Brazil). Sixty male and female NHP with the average age of 1-21 years old, comprising twenty animals of each species, were analyzed. Nine different Staphylococcus species (S. aureus, S. cohnii, S. saprophyticus, S. haemolyticus, S. xylosus, S. warneri, S. nepalensis, S. simiae, and S. kloosi) were identified by MALDI-TOF and 16S rRNA gene sequence analyses. Antibiotic resistance was not detected among the isolated bacterial population. S. aureus was the main isolate (19 strains), present in all species, predominant in cynomolgus monkeys (9/20) and squirrel monkeys (7/20). spa typing was used to examine the clonal structure and genetic profile of Staphylococcus aureus isolates. Eight (8) spa types were identified among the S. aureus strains. A major cluster was identified, corresponding to a new spa type t20455, and no spa types found in this study were seen before in Brazil.
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Affiliation(s)
- Juliana Georg da Silva
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil
| | - Glenda Culuchi
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil
| | - Cristiane Pinheiro Pestana
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil
| | - Haroldo Cid da Silva Junior
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil
| | - Felipe Betoni Saraiva
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil
| | - Tatiana Kugelmeier
- Laboratório de Pesquisa em Infecção Hospitalar do Instituto Oswaldo Cruz (LAPIH/IOC/Fiocruz), Rio de Janeiro, Brazil
| | - Daniel Rouede
- Laboratório de Pesquisa em Infecção Hospitalar do Instituto Oswaldo Cruz (LAPIH/IOC/Fiocruz), Rio de Janeiro, Brazil
| | - Ana Cristina Araújo Pinto
- Laboratório de Pesquisa em Infecção Hospitalar do Instituto Oswaldo Cruz (LAPIH/IOC/Fiocruz), Rio de Janeiro, Brazil
| | - Thalita Pissinati
- Laboratório de Pesquisa em Infecção Hospitalar do Instituto Oswaldo Cruz (LAPIH/IOC/Fiocruz), Rio de Janeiro, Brazil
| | - Ana Paula D'Alincourt Assef
- Serviço de Criação de Primatas não Humanos do Instituto de Ciência e Tecnologia em Biomodelos (ICTB/Fiocruz), Rio de Janeiro, Brazil
| | - Claudio Marcos Rocha-de-Souza
- Serviço de Criação de Primatas não Humanos do Instituto de Ciência e Tecnologia em Biomodelos (ICTB/Fiocruz), Rio de Janeiro, Brazil
| | | | - José Procópio M Senna
- Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil.
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Tian F, Li J, Li L, Li F, Tong Y. Molecular dissection of the first Staphylococcus cohnii temperate phage IME1354_01. Virus Res 2022; 318:198812. [DOI: 10.1016/j.virusres.2022.198812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/06/2022] [Accepted: 05/12/2022] [Indexed: 10/18/2022]
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Microbiological Evaluation of Water Used in Dental Units. WATER 2022. [DOI: 10.3390/w14060915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In modern dentistry, dental units are used for the treatment of patients’ teeth, and they need water to operate. Water circulates in a closed vessel system and finally reaches the mucous membranes of the patient as well as the dentist themselves. Therefore, the microbiological safety of this water should be a priority for physicians. This study aims to identify and determine the microbial count, expressed in CFU/mL, in water samples from various parts of the dental unit that are in direct contact with the patient. Thirty-four dental units located in dentistry rooms were analysed. The dentistry rooms were divided into three categories: surgical, conservative, and periodontal. It was found that in surgical rooms, the bacterial count was 1464.76 CFU/mL, and the most common bacterium was Staphylococcus pasteuri—23.88% of the total bacteria identified. In dentistry rooms where conservative treatments were applied, the average bacterial concentration was 8208.35 CFU/mL, and the most common bacterium was Ralsonia pickettii (26.31%). The periodontal rooms were also dominated by R. pickettii (45.13%), and the average bacterial concentration was 8743.08 CFU/mL. Fungi were also detected. Rhodotorula spp., Alternaria spp., and Candida parapsilosis were found to be the most common bacteria which are potentially harmful. This study indicates the need for effective decontamination of the water that is used in dental units and for constant monitoring of the level of contaminants present in the closed vessel system.
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