Article
Veterinary Sciences
Maria Anel Fuentes-Valencia, Jose Luis Osornio-Esquivel, Carlos Antonio Martinez Palacios, Jose Luis Contreras-Avila, Erik Barriga-Tovar, Genoveva Ingle-de la Mora, Andres Arellano-Torres, Victor Manuel Baizabal-Aguirre, Alejandro Bravo-Patino, Marcos Cajero-Juarez, Juan Jose Valdez Alarcon
Summary: This study reports on a case of bacterial infection in Mexican golden trout, which is being bred alongside rainbow trout. The identified bacteria include Aeromonas bestiarum, Aeromonas sobria, Plesiomonas shigelloides, and Ichthyobodo necator. These bacteria showed resistance to certain antibiotics, suggesting contamination from human or livestock activities.
BMC VETERINARY RESEARCH
(2022)
Review
Biochemistry & Molecular Biology
Luis Uriel Gonzalez-Avila, Miguel Angel Loyola-Cruz, Cecilia Hernandez-Cortez, Juan Manuel Bello-Lopez, Graciela Castro-Escarpulli
Summary: The increased use of antimicrobials like colistin has led to the emergence of colistin-resistant Aeromonas strains. These strains have been found not only in clinical settings, but also in environmental and animal isolates, identified by detection of mcr genes. Different mcr variants have been detected in Aeromonas from various sources, including animals, environments, and human samples. This article provides an overview of colistin resistance in Aeromonas, along with general characteristics of the molecule and recommended methods for determining colistin resistance in certain Aeromonas species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Evolutionary Biology
Yazid Adam, Pierre Brezellec, Elena Espinosa, Amelie Besombes, Delphine Naquin, Evelyne Paly, Christophe Possoz, Erwin van Dijk, Francois-Xavier Barre, Jean-Luc Ferat
Summary: Approximately 10% of bacteria possess a multichromosome genome, consisting of a primary chromosome of bacterial origin and additional chromids of plasmid origin. Recent studies have uncovered potential coordination between the replication/segregation of chromids and the progression of the cell cycle in these multichromosome bacteria. For example, in Vibrionales, replication of the chromid (Chr2) is initiated upon duplication of a sequence on the primary chromosome (Chr1), and Chr1 serves as a scaffold for partitioning Chr2 in daughter cells. To understand the integration of secondary chromosomes in the cell cycle, researchers hypothesized that critical features would be conserved across species. By identifying a chromid related to Vibrionales in Plesiomonas shigelloides, a divergent aquatic pathogenic enterobacterium, they were able to conduct comparative analyses and establish a list of features likely involved in maintaining the chromid in the host cell cycle.
GENOME BIOLOGY AND EVOLUTION
(2022)
Article
Infectious Diseases
Samy Selim, Mohammed S. Almuhayawi, Shadi Ahmed Zakai, Ahmed Attia Salama, Mona Warrad
Summary: Plesiomonas shigelloides is a gram-negative, thermotolerant, motile, and pleomorphic microorganism that is distantly related to the Enterobacteriaceae and Vibrionaceae families. This study investigated the antimicrobial resistance and pathogenicity genes of P. shigelloides isolated from seawater and shellfish. The presence of P. shigelloides was found in 5.7% of shellfish samples and 5% of seawater samples. All isolates were sensitive to the tested antimicrobial agents. Virulence tests showed that the strains had the potential to cause disease in shellfish. Various virulence genes were found in these strains, indicating that shellfish may serve as a reservoir for multi-resistant P. shigelloides and contribute to the spread of virulence genes in the environment.
Article
Multidisciplinary Sciences
Varangkana Thaotumpitak, Jarukorn Sripradite, Edward R. Atwill, Saharuetai Jeamsripong
Summary: This study reveals the presence of antimicrobial-resistant bacteria, including Aeromonas hydrophila, Salmonella spp., and Vibrio cholerae, in cultured red tilapia in Thailand. These bacteria exhibited resistance to multiple antibiotics, and some strains were found to produce extended-spectrum beta-lactamase. These findings highlight the public health concerns and foodborne risks associated with zoonotic pathogens in humans from freshwater fish.
Article
Biotechnology & Applied Microbiology
Francis S. Legario, Casiano H. Choresca, Kathryn Grace, James F. Turnbull, Margaret Crumlish
Summary: This study characterized and profiled motile Aeromonas species recovered from sick tilapia farmed in the Philippines. The results showed that Aeromonas veronii is the main pathogen causing motile Aeromonas septicaemia in farmed tilapia, and it exhibits diverse genotypes, biochemical profiles, and antibiotic resistances.
JOURNAL OF APPLIED MICROBIOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Prasanga Madhushani Kumarage, Liyana Arachchilage Dinithi Sandunika De Silva, Gang-Joon Heo
Summary: This article summarizes the antimicrobial resistance properties of Vibrio species isolated from aquatic environments to raise awareness about potential health risks related to Vibrio infections in aquaculture and public health.
JOURNAL OF APPLIED MICROBIOLOGY
(2022)
Article
Veterinary Sciences
Kyoo-Tae Kim, Haeseung Lee, Dongmi Kwak
Summary: A 7-year-old male gray wolf was found dead at a zoo due to a rare systemic gastrointestinal infection caused by Plesiomonas shigelloides, which is rarely responsible for such infections. This case represents the first reported systemic infection of its kind in a zoo animal.
VETERINARY SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Junxiang Yan, Bin Yang, Xinke Xue, Jinghao Li, Yuehua Li, Ang Li, Peng Ding, Boyang Cao
Summary: In this study, the regulatory function of PdhR in Plesiomonas shigelloides was investigated. RNA sequencing was performed to identify the pathways controlled by PdhR. The results showed that PdhR regulates a significant portion of the transcriptome and is involved in the regulation of flagella genes, T3SS expression, and host cell infection ability. Additionally, the regulatory mechanism of PdhR and its upstream regulator ArcA were revealed.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Immunology
Dan Deng, Zizi Mu, Xiaoyan Lv, Xincheng Jiang, Jiang Zhou, Huizhi Guo, Wenbing Zhang, Bei Wang, Yishan Lu, Jinping Wu, Hao Du, Shuhuan Zhang, Qiaoqing Xu, Qiwei Wei
Summary: This study identified two pathogenic bacteria, Plesiomonas shigelloides and Citrobacter freundii, isolated from diseased Chinese sturgeon. It is the first report suggesting that P. shigelloides infection is associated with mortality in Chinese sturgeon. The results provide insights into the pathogenesis and severe pathogenicity of P. shigelloides and C. freundii in cultured sturgeons, and offer guidance on the prevention and treatment of bacterial infections caused by these bacteria.
MICROBIAL PATHOGENESIS
(2022)
Article
Immunology
Dan Deng, Zizi Mu, Xiaoyan Lv, Xincheng Jiang, Jiang Zhou, Huizhi Guo, Wenbing Zhang, Bei Wang, Yishan Lu, Jinping Wu, Hao Du, Shuhuan Zhang, Qiaoqing Xu, Qiwei Wei
Summary: This study provides the first report suggesting the association between P. shigelloides infection and mortality of Chinese sturgeon, highlighting the pathogenesis and severe pathogenicity of P. shigelloides and C. freundii in cultured Chinese sturgeon. The findings offer insights into the prevention and treatment of bacterial infection caused by P. shigelloides and C. freundii in cultured sturgeons.
MICROBIAL PATHOGENESIS
(2022)
Article
Pharmacology & Pharmacy
Yuchen Wu, Ning Dong, Chang Cai, Yu Zeng, Congcong Liu, Hanyu Wang, Yanyan Zhang, Ling Huang, Weishuai Zhai, Dongyan Shao, Ruichao Li, Dejun Liu, Sheng Chen, Rong Zhang
Summary: This study investigated the genomic and phenotypic characteristics of tmexCD-toprJ-positive Aeromonas strains collected from different sources in China. The results revealed that these strains carried multiple antimicrobial resistance genes and exhibited resistance to various classes of antibiotics. The presence of tmexCD-toprJ was found to be associated with seven different types of genetic environments, potentially facilitating the transmission of this gene cluster. Furthermore, the tmexCD-toprJ-positive Aeromonas strains showed genetic diversity and belonged to four different species, clustering into three major lineages.
DRUG RESISTANCE UPDATES
(2023)
Article
Microbiology
Brady Hirshfeld, Kurtis Lavelle, Katie Yen Lee, Edward Robert Atwill, David Kiang, Bakytzhan Bolkenov, Megan Gaa, Zhirong Li, Alice Yu, Xunde Li, Xiang Yang
Summary: This study investigated the prevalence and distribution of antimicrobial resistance (AMR) in Vibrio spp. and Enterococcus spp. from retail shrimp in California. The results showed that Vibrio spp. and Enterococcus spp. had high levels of resistance to certain antimicrobial drugs. Whole genome sequencing revealed the presence of multiple antimicrobial resistance genes in Vibrio isolates.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Infectious Diseases
Doan Thi Nhinh, Nguyen Thi Huong Giang, Kim Van Van, Lua Thi Dang, Ha Thanh Dong, Truong Dinh Hoai
Summary: This study reports the widespread presence of Edwardsiella ictaluri in farmed tilapia in Vietnam. The pathogen has a high virulence and multidrug resistance, and is likely to continue spreading through contaminated stocks.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Article
Infectious Diseases
Le Thanh Dien, Le Buu Ky, Bui The Huy, Muhammad Fadhlullah Mursalim, Pattanapon Kayansamruaj, Saengchan Senapin, Channarong Rodkhum, Ha Thanh Dong
Summary: This study identified a new lytic phage, pAh6.2TG, which showed high specificity and stability against multidrug-resistant Aeromonas hydrophila. In experimental challenges, phage treatment significantly improved survivability of Nile tilapia exposed to the pathogenic MDR A. hydrophila, while reducing bacterial concentrations in both water and fish body. These findings suggest that pAh6.2TG is an effective alternative to antibiotics for controlling MDR A. hydrophila in tilapia and possibly other freshwater fish species.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)