Mycoplasma bovis-pneumonia and polyarthritis in feedlot calves in Argentina: First local isolation

Cantón, Germán; Llada, Ignacio Mariano; Margineda, Carlos Augusto; Urtizbiría, Facundo; Fanti, Sofía; Scioli, Valeria; Fiorentino, Marí­a Andrea; Uriarte, Enrique Leopoldo Louge; Morrell, Eleonora; Sticotti, Erika; Tamiozzo, Pablo

doi:10.1016/j.ram.2022.02.005

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…Some authors suggest this condition is more frequent in summer (15), as reported here. There are few reports of M. bovis infections in South American cattle, particularly in Brazil and Argentina, but they are typically associated with pneumonia (4,18,24) and mastitis (7). The gross and microscopic findings in the middle and inner ear were like those previously reported in other countries (15,16,27).…”

Section: Discussionmentioning

confidence: 99%

“…Typically, these organisms inhabit the mucosal surfaces in contact with the external environment, such as the respiratory, urogenital, eyes, and mammary glands (5). M. bovis is a frequent participant in the bovine respiratory disease complex (5,12,18) and causes arthritis (4,11), mastitis (5,7), otitis (15,16), and meningitis (26) in cattle. This study documents an outbreak of otitis media and internal caused…”

Section: Introductionmentioning

confidence: 99%

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Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina

Margineda,

Diab,

Quiroga

et al. 2023

BJVP

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The paper describes an outbreak of Mycoplasma bovis-associated bronchopneumonia and otitis clinically associated with facial paralysis in feedlot steers in Argentina. Three of sixty-one feedlot animals from the same pen developed unilateral facial paralysis primarily with ear dropping, droopy eyelids (eyelid ptosis), and head tilt. Postmortem exanimation revealed cranioventral consolidation of the lungs (bronchopneumonia) and the presence of abundant purulent exudate in the tympanic bulla (otitis). The affected lung had a nodular appearance. Histopathological examination of the middle and inner ear showed necrotizing, suppurative otitis, and bronchopneumonia with bronquiectasis compatible with M. bovis infection. Immunohistochemistry of the lung, and middle and inner ear revealed abundant M. bovis antigen. The ELISA tests revealed that the two animals showing facial paralysis had seroconverted for M. bovis. To our knowledge, these are the first reported cases of M. bovis otitis in Argentina. These findings should alert veterinarians and diagnosticians of the relevance of M. bovis as a cause of otitis and facial paralysis in cattle.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina

Margineda,

Diab,

Quiroga

et al. 2023

BJVP

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“…In addition, polymerase chain reaction (PCR) technique [19]. Immunohistochemistry (IHC) [20]. There is a limited information about the prevalence of M. bovis in Nineveh Governorate, Iraq using different diagnostic methods.…”

Section: Introductionmentioning

confidence: 99%

Prevalence of Mycoplasma bovis in Cattle in Nineveh Governorate, Iraq

Al-Azow,

Alsarhan,

Hamad

2025

Egyptian Journal of Veterinary Sciences

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T HE CURRENT STUDY aimed to determine the prevalence of Mycoplasma bovis in cattle in Nineveh Governorate, Iraq, using the culture method, indirect enzyme-linked immunosorbent assay (i-ELISA), and conventional polymerase chain reaction (c-PCR) technique, to evaluate the efficiency of the various laboratory methods used in this study. During the period from March 2022 to February 2023, a total of 352 nasal swabs were collected randomly from cattle and tested using the culture method and conventional polymerase chain reaction (c-PCR) technique (amplifying the uvrC gene) for isolation and molecular detection of M. bovis , respectively. Moreover, 352 blood samples were collected from the same animals for the detection of antibodies against M. bovis using i-ELISA. The results observed that the prevalence of M. bovis was 23.57% (83 out of 352) using the culture method, 30.68% (108 out of 352) using the c-PCR technique, and 47.15% (166 out of 352) using i-ELISA. According to the Kappa value (0.807), there was perfect agreement between the c-PCR technique and the culture method, with sensitivity, specificity, and accuracy were 98.79%, 90.33%, and 92.32% for c-PCR technique respectively. While there was moderate agreement between i-ELISA test and the culture method based on Kappa (0.444), with sensitivity, specificity and accuracy were 89.15%, 65.79%, and 71.30% for i-ELISA, respectively. This study was concluded that M. bovis is prevalent in Nineveh Governorate and the PCR technique is the more efficient tool than ELISA for detection of M. bovis in suspected samples.

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Pulmonary Mycoplasmosis in an Axis Deer (Axis Axis) From a Wildlife Reserve in Argentina

Avellaneda-Cáceres,

Margineda,

Fernández

et al. 2024

Preprint

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A 4-year-old male axis deer (Axis axis) died after several weeks of progressive weight loss and severe respiratory distress. A field necropsy was performed, and lung tissue was submitted for histopathology. Microscopically, there was severe, subacute to chronic, diffuse, suppurative bronchopneumonia with multiple caseonecrotic foci and bronchiectasis. Immunohistochemical (IHC) analysis using polyclonal antibodies for Mycoplasma bovis revealed positive immunoreactivity. The histopathological, and IHC findings observed in this deer are remarkably similar to pulmonary mycoplasmosis of cattle. These findings represent the first report of M. bovis-associated pneumonia in the axis deer and suggest that deer develop pulmonary disease and lung lesions like mycoplasmosis in domestic cattle.

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Mycoplasma bovis-pneumonia and polyarthritis in feedlot calves in Argentina: First local isolation

Cited by 4 publications

References 15 publications

Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina

Facial paralysis in feedlot cattle associated with otitis caused by Mycoplasma bovis: first report in Argentina

Prevalence of Mycoplasma bovis in Cattle in Nineveh Governorate, Iraq

Pulmonary Mycoplasmosis in an Axis Deer (Axis Axis) From a Wildlife Reserve in Argentina

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