Avian Mycoplasma Pathogenesis and Control Strategies
Summary
Mycoplasma species such as Mycoplasma synoviae and Mycoplasma gallisepticum are cell-wall-deficient bacteria that pose persistent challenges to poultry health worldwide. Colonisation of the respiratory tract is initiated by specific adhesion proteins, triggering local inflammation, epithelial damage and systemic sequelae including synovitis and eggshell abnormalities. Antigenic variation of surface lipoproteins enables immune evasion and complicates vaccine design. Conventional management relies on biosecurity measures, breeder flock monitoring and housing strategies, supplemented by live attenuated or inactivated vaccines and antimicrobial therapy with macrolides, tetracyclines and pleuromutilins. Recent advances in genomic characterisation, molecular diagnostics and antigen discovery are refining strain differentiation, informing targeted treatments and driving the development of subunit and multivalent vaccines that promise broader protection while mitigating resistance and production losses.
Research from Nature Portfolio
Recent work has provided detailed molecular profiling of Mycoplasma synoviae strains circulating in Southeast Asia, employing partial vlhA gene sequencing to distinguish vaccine from field genotypes. A PCR-RFLP assay was validated for rapid strain differentiation, facilitating surveillance in commercial flocks. Antimicrobial susceptibility testing revealed consistent sensitivity to macrolides, tetracyclines and pleuromutilins but emerging resistance to fluoroquinolones, underlining the need for region-specific treatment guidelines and stewardship programmes to inform prudent drug use in poultry production.
Avian Mycoplasma Pathogenesis and Control Strategies publication trend
The graph below shows the total number of articles in avian mycoplasma pathogenesis and control strategies across all publications each year (not limited to Nature Index journals).
Technical terms
vlhA gene: A variable lipoprotein and hemagglutinin gene encoding surface proteins involved in host adhesion and immune evasion.
PCR-RFLP: A molecular technique combining polymerase chain reaction and restriction fragment length polymorphism for genotyping and strain differentiation.
Reverse vaccinology: An in silico vaccine discovery method that screens genomic data to identify candidate antigens.
Lipoprotein adhesin: A membrane-anchored protein that facilitates pathogen attachment to host cells and may serve as a diagnostic or vaccine target.
Subunit vaccine: A vaccine composed of selected antigenic components rather than whole organisms, aimed at eliciting targeted immune responses.
References
- Screening of immunogenic proteins and evaluation of vaccine candidates against Mycoplasma synoviae. npj Vaccines (2023).
- Target antigen screening and development of a multi-component subunit vaccine against Mycoplasma synoviae in chickens. Frontiers in Cellular and Infection Microbiology (2024).
- Mycoplasma synoviae LP78 is a fibronectin/plasminogen binding protein, putative adhesion, and potential diagnostic antigen. Frontiers in Microbiology (2024).
- Molecular characterization and antimicrobial susceptibility profiles of Thai Mycoplasma synoviae isolates. Scientific Reports (2023).
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