Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water

Rasha A. Sonkol; Helmy A. Torky; Samy A. Khalil

doi:10.5455/ajvs.70246

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Original Article

AJVS. 2020; 64(2): 34-42

doi: 10.5455/ajvs.70246

Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water

Rasha A. Sonkol, Helmy A. Torky, Samy A. Khalil.

Abstract
The present study was done to verify the presence of certain virulence genes in A. hydrophila isolated from fish and water samples collected from different farms in three governorates including (Kafr El-sheikh, El-Behera and Damietta), in addition to study the antibiotic susceptibility of isolated A. hydrophila strain. The obtained results showed the overall prevalence of A. hydrophila was 25% with high incidence in Kafr El-sheik farms 30% followed by El-Behera and Damietta farms. Antibiotic sensitivity of A. hydrophila strains showed the highest antimicrobial resistance to ampicillin, amoxicillin and Cephradine and highly susceptible to Florfenicol and Doxycycline. Polymerase chain reaction (PCR) assessment was done to detect the presence of three virulence genes in the ten biochemically identified A. hydrophila and found that the most frequent virulence gene detected in A. hydrophila strains isolated from both fish and water samples was aerolysin gene by incidence 100% at molecular size 326 bp followed by haemolysin gene 30% at molecular size 1500bp, and all isolates completely free from shigatoxin 2. PCR not only detect bacterial pathogens in fish but also differentiate between different bacterial strains and serotypes. The detection of virulence genes in A. hydrophila is critical in determining pathogenicity of the organism and subsequently the possible drug targets for prevention of its infection.

Key words: Key words: Fish, water, antibiotic susceptibility, PCR, Virulence gene

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Pubmed Style

Sonkol RA, Torky HA, Khalil SA. Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. AJVS. 2020; 64(2): 34-42. doi:10.5455/ajvs.70246

Web Style

Sonkol RA, Torky HA, Khalil SA. Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. https://www.alexjvs.com/?mno=70246 [Access: May 06, 2025]. doi:10.5455/ajvs.70246

AMA (American Medical Association) Style

Sonkol RA, Torky HA, Khalil SA. Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. AJVS. 2020; 64(2): 34-42. doi:10.5455/ajvs.70246

Vancouver/ICMJE Style

Sonkol RA, Torky HA, Khalil SA. Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. AJVS. (2020), [cited May 06, 2025]; 64(2): 34-42. doi:10.5455/ajvs.70246

Harvard Style

Sonkol, R. A., Torky, . H. A. & Khalil, . S. A. (2020) Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. AJVS, 64 (2), 34-42. doi:10.5455/ajvs.70246

Turabian Style

Sonkol, Rasha A., Helmy A. Torky, and Samy A. Khalil. 2020. Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water. Alexandria Journal of Veterinary Sciences, 64 (2), 34-42. doi:10.5455/ajvs.70246

Chicago Style

Sonkol, Rasha A., Helmy A. Torky, and Samy A. Khalil. "Molecular Characterization of Some Virulence Genes and Antibiotic Susceptibility of Aeromonas Hydrophila Isolated from Fish and Water." Alexandria Journal of Veterinary Sciences 64 (2020), 34-42. doi:10.5455/ajvs.70246

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APA (American Psychological Association) Style

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