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Journal ArticleDOI

Diagnosis of Mycoplasma hyopneumoniae.

Eileen L. Thacker
- 01 Dec 2004 - 
- Vol. 5, Iss: 2, pp 317-320
TLDR
The use of serology, the polymerase chain reaction and various assays to detect the presence of M. hyopneumoniae in tissue is common in diagnostic laboratories as mentioned in this paper.
Abstract
Mycoplasma hyopneumoniae, the cause of enzootic pneumonia, remains an important pathogen in the swine industry. This small, complex organism colonizes the ciliated cells of the respiratory tract, resulting in little exposure to the immune system. Confirming the presence of M. hyopneumoniae, as well as identifying its role in respiratory disease and pneumonia, remains challenging to the veterinary profession. While culture of the organism remains the gold standard for identification, the use of serology, the polymerase chain reaction and various assays to detect the presence of M. hyopneumoniae in tissue is common in diagnostic laboratories. Because of the role M. hyopneumoniae plays in increasing the severity of pneumonia associated with concurrent bacterial and viral infections, understanding the pathogenesis and diagnostic assays available is critical for developing effective intervention strategies to control respiratory disease on a herd basis.

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Citations
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Journal ArticleDOI

Control of Mycoplasma hyopneumoniae infections in pigs.

TL;DR: The main effects of vaccination include less clinical symptoms, lung lesions and medication use, and improved performance, however, bacterins provide only partial protection and do not prevent colonization of the organism.
Journal ArticleDOI

An Investigation of the Pathology and Pathogens Associated with Porcine Respiratory Disease Complex in Denmark

TL;DR: Lung samples from 148 finishing pigs with cranioventral lobular bronchopneumonia consistent with porcine respiratory disease complex (PRDC) in Denmark revealed a broad range of microscopical lesions and the diversity and number of pathogens were higher in these animals compared with controls.
Journal ArticleDOI

Mycoplasma hyopneumoniae: from disease to vaccine development.

TL;DR: In this review, the characteristics of M. hyopneumoniae related to pathogenesis and control measures will be discussed and special emphasis will be placed on vaccination strategies that have been proposed with the use of reverse vaccinology approaches.
Journal ArticleDOI

The effect of vaccination on the transmission of Mycoplasma hyopneumoniae in pigs under field conditions.

TL;DR: It is indicated that vaccination does not significantly reduce the transmission of this respiratory pathogen in nursery pigs under field conditions.
Journal ArticleDOI

Proteomic survey of the pathogenic Mycoplasma hyopneumoniae strain 7448 and identification of novel post-translationally modified and antigenic proteins.

TL;DR: A proteomic analysis, based on two-dimensional gel electrophoresis of soluble protein extracts, immunoblot and mass spectrometry, which was carried out aiming the identification of gene products and antigenic proteins from the M. hyopneumoniae pathogenic strain 7448 produced a proteome map that is expected to serve as a reference for comparative analyses for methabolic studies based on cells cultured under modified conditions.
References
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Journal ArticleDOI

Use of a Mycoplasma Hyopneumoniae Nested Polymerase Chain Reaction Test to Determine the Optimal Sampling Sites in Swine

TL;DR: The nested PCR developed for this study was found to be a highly sensitive and specific diagnostic tool for M. hyopneumoniae, but the enhanced sensitivity may be unnecessary if the proper sites are sampled.
Journal ArticleDOI

Major membrane surface proteins of Mycoplasma hyopneumoniae selectively modified by covalently bound lipid.

TL;DR: It is established that a highly restricted set of distinct, lipid-modified hydrophobic membrane proteins are major surface antigens of M. hyopneumoniae and that structural variants of surfaceAntigens occur within this species.
Journal Article

Dynamics of Mycoplasma hyopneumoniae infection in 12 farms with different production systems

TL;DR: There were significant differences in the infection dynamics and clinical implications according to the type of production system, and M. hyopneumoniae colonization and seroconversion were greatly influenced by the effect of the individual farm.
Journal Article

Diagnosis of mycoplasmal pneumonia of swine: sequential study by direct immunofluorescence.

TL;DR: An improved direct fluorescent antibody test was evaluated for specificity and efficacy in diagnosing mycoplasmal pneumonia of swine and indicated that there may be a decrease in number of M hyopneumoniae cells in the more advanced stages of the disease.
Journal ArticleDOI

A nested PCR assay for the detection of Mycoplasma hyopneumoniae in tracheobronchiolar washings from pigs.

TL;DR: The nested PCR was compared to a blocking ELISA performed with sera collected from the same pigs at the same ages, and to an immunofluorescence test at slaughter on 65 lungs from 6-month old pigs, and indicated that it was significantly more sensitive than ELISA for detection of M. hyopneumoniae in pig lungs at slaughter.
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