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| {{Taxobox | | {{Taxobox |
| |name = ''Mycoplasma hyorhinis'' | | |name = ''Mycoplasma hyorhinis'' |
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| |genus = [[:Category:Mycoplasmas|Mycoplasma]] | | |genus = [[:Category:Mycoplasmas|Mycoplasma]] |
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| + | Also Known As: ''''' Mycoplasma arthritis — Mycoplasma septicaemia — Mycoplasmal Polyserositis''''' |
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− | Also Known As –''''' Mycoplasma arthritis – Mycoplasma septicaemia – Mycoplasmal polyserositis'''''
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| ==Introduction== | | ==Introduction== |
− | ''Mycoplasma hyorhinis'' is a common [[Bacteria | bacterial]] '''commensal''' of pig’s respiratory tracts and an occasional cause of '''polyarthritis and polyserositis''' in young pigs. | + | ''Mycoplasma hyorhinis'' is a common [[Bacteria |bacterial]] '''commensal''' of pig’s respiratory tracts and an occasional cause of '''polyarthritis and polyserositis''' in young pigs. |
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− | ''M. hyorhinis'' is commonly associated with other pathogens, exacerbating and facilitating disease, especially ''Mycoplasma hyopneumoniae'', the principle cause of [[Enzootic Pneumonia - Pigs]], ''[[Actinobacillus pleuropneumoniae]]'' and ''[[Arcanobacterium pyogenes]]''. | + | ''M. hyorhinis'' is commonly associated with other pathogens, exacerbating and facilitating disease, especially ''[[Mycoplasma hyopneumoniae]]'', the principal cause of [[Enzootic Pneumonia - Pigs]], ''[[Actinobacillus pleuropneumoniae]]'' and ''[[Arcanobacterium pyogenes]]''. |
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| ''M. hyorhinis'' is also implicated in many severe cases of [[Porcine Reproductive and Respiratory Syndrome]]. | | ''M. hyorhinis'' is also implicated in many severe cases of [[Porcine Reproductive and Respiratory Syndrome]]. |
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| Antigens persist in the tissues, especially the joints, long after infection has resolved, stimulating '''auto-immune mechanisms''' which further damage the joints, causing damage which may be permanent. | | Antigens persist in the tissues, especially the joints, long after infection has resolved, stimulating '''auto-immune mechanisms''' which further damage the joints, causing damage which may be permanent. |
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− | ==Disease== | + | ==Clinical signs== |
− | Chronic '''progressive polyserositis''' in pigs under 10 weeks old
| + | The main presentation is as a chronic '''progressive polyserositis''' in pigs under 10 weeks old. '''Lameness and swollen joints''' are common and congenital arthrogryposis may be seen in young stock. |
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− | '''Lameness and swollen joints,''' arthrogryposis | + | Fever usually accompanies clinical signs and animals often have a rough, dull, staring hair coat. '''Laboured breathing and tachycardia''' are non-specific cardiorespiratory signs. |
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− | Fever
| + | '''Aural discharge''' with a foul odour represents otitis and may result in deafness. Otitis media may cause a head tilt and vestibular signs. |
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− | '''Laboured breathing, tachycardia'''
| + | Dysphagia and vomiting/regurgitation are less common but significant. Other neurological and ocular signs may be also present . |
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− | '''Aural discharge''' with a foul odour and deafness
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− | Otitis media may cause a head tilt and vestibular signs.
| + | '''Serofibrinous pleurisy, pericarditis and peritonitis''' are pathological features of ''M. hyorhinis''. |
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− | Dysphagia and vomiting/regurgitation
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− | Neurological and ocular signs
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− | Rough, dull, staring hair coat
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− | '''Serofibrinous pleurisy, pericarditis and peritonitis'''.
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| ==Diagnosis== | | ==Diagnosis== |
| '''Joint fluid, synovial membranes and samples from the pleura, pericardium and peritoneum''' can be used for '''culture''' of ''M. hyorhinis''. | | '''Joint fluid, synovial membranes and samples from the pleura, pericardium and peritoneum''' can be used for '''culture''' of ''M. hyorhinis''. |
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− | Immunofluorescent Antibody Testing '''(IFAT)''' is also possible. | + | [[FAT|Immunofluorescent Antibody Testing ]]'''(IFAT)''' is also possible. [[Complement Fixation]] and [[Haemagglutination]] can be performed for serological diagnosis but are not widely available. |
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− | Complement Fixation and Haemagglutination can be performed for serological diagnosis but are not widely available. | |
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| Antibodies can be detected in serum and synovial fluid, but not until 6 weeks post-infection. | | Antibodies can be detected in serum and synovial fluid, but not until 6 weeks post-infection. |
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| ==Treatment== | | ==Treatment== |
| A variety of antibiotics are effective, including '''tetracycline, tiamulin, enrofloxacin, tylosin and lincomycin.''' | | A variety of antibiotics are effective, including '''tetracycline, tiamulin, enrofloxacin, tylosin and lincomycin.''' |
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| {{Learning | | {{Learning |
− | |flashcards = [[Mycoplasma hyorhinis Flashcards]] | + | |flashcards = [[Mycoplasma hyorhinis Flashcards|''Mycoplasma hyorhinis'' Flashcards]] |
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| ==References== | | ==References== |
| <references/> | | <references/> |
− | Animal Health & Production Compendium, Mycoplasma hyorhinis datasheet, accessed 15/06/2011 @ http://www.cabi.org/ahpc/
| + | {{CABI source |
| + | |datasheet = [http://www.cabi.org/ahpc/?compid=3&dsid=74547&loadmodule=datasheet&page=2144&site=160 ''Mycoplasma hyorhinis'' infections] |
| + | |date =15 June 2011 |
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| [[Category:Mycoplasmas]] | | [[Category:Mycoplasmas]] |
− | [[Category:To Do – CABI review]] | + | [[Category:Pig Bacteria]][[Category:Musculoskeletal Diseases - Pig]] |
| + | [[Category:CABI Expert Review]][[Category:CABI AHPC Pages]] |