Surto de abscesso mandibular por Pseudomonas aeruginosa em ovinos

Amorim, Rogério Martins; Toma, Hugo Shisei; Vulcano, Luiz Carlos; Ribeiro, Márcio Garcia; Fernandes, Sérgio Rodrigo; Borges, Alexandre Secorun; Chiacchio, Simone Biagio; Gonçalves, Roberto Calderón

doi:10.1590/s0100-736x2011000900004

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…The individual prevalence obtained in our study (5.5%) was similar to that obtained by other authors in a study carried out on European domestic sheep (5%) [28]. Although higher individual prevalences of oral lesions have been described in the literature, these are always associated with outbreaks related to the entry of a highly pathogenic microorganism onto the farm [29][30][31][32].…”

Section: Discussionsupporting

confidence: 89%

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Management of Risk Factors Associated with Chronic Oral Lesions in Sheep

Lacasta

González

Ferrer

et al. 2020

Animals

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Oral disorders constitute a significant cause of weight loss in sheep. In a study of disorders of the oral cavity of 36,033 sheep from 60 meat sheep flocks in Spain, we looked for management risk factors associated with chronic oral lesions. Mandibular and maxillary disorders were assessed as an external manifestation of oral lesions by palpation, searching for tissue swellings, fistulae, or open wounds. The prevalence of flocks containing sheep with jaw disorders was 98.3%, with an average individual prevalence of 5.5%. The majority of lesions were located in in the mid-region of the mandible, and the most relevant risk factor was increasing age. Use of acidic diets based on silage and inclusion of hard foods, such as maize straw or hay, was associated with the occurrence of jaw inflammation. It was concluded that hard diets containing plant material with edges and sharp areas, plus acidic foods including silage, are more likely to cause lesions of the gingiva, enabling entry of pathogens to the oral mucosa that eventually establish locally in bony tissues, usually as mandibular osteomyelitis. It was also observed that mineral supplementation appears to prevent the occurrence of these lesions.

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Section: Discussionsupporting

confidence: 89%

“…A high prevalence of mandibular inflammation was also reported in sheep, with 15% of domestic ewes affected [29]. Furthermore, outbreaks of mandibular osteomyelitis caused by Pseudomona aeruginosa have been reported in Brazil, Iran, and Spain, with prevalences of 12.0% [30], 20.0% [31], and 29.2% [32].…”

Section: Introductionmentioning

confidence: 98%

Management of Risk Factors Associated with Chronic Oral Lesions in Sheep

Lacasta

González

Ferrer

et al. 2020

Animals

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“…However, some reports associate these disorders with a specific microorganism. That is the case of several outbreaks of acute mandibular osteomyelitis caused by Pseudomonas aeruginosa that were reported in Brazil, Iran, and Spain [8][9][10]. In the present study, Trueperella pyogenes and Escherichia coli were isolated in a high percentage in OMO lesions (7.26% and 6.22%, respectively) and rarely isolated in healthy animals (0.00% and 2.20%).…”

Section: Discussionsupporting

confidence: 53%

“…In these cases, plant material has been found between the teeth and the alveolar bone, which provides access for environmental bacteria into the bone [5]. However, sometimes OMO has been associated with the entry of a specific and invasive microorganism, such as Pseudomonas aeruginosa [8][9][10], which can cause a severe acute outbreak.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Bacterial Isolates in Ovine Mandibular Osteomyelitis and Oral Microbiota of Healthy Sheep

et al. 2021

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Microorganisms involved in ovine mandibular osteomyelitis (OMO) have not yet been deeply studied. The aim of the present study is to elucidate the microorganisms involved in OMO, comparing them with the microorganisms found in the healthy oral cavity of sheep. Two hundred and five samples were taken from mandibular osteomyelitis lesions, and they were compared with the microbiological results of samples obtained from twelve periodontally healthy sheep. Sixty-four samples (32.98%) of OMO lesions showed pure growths, while 130 (67.01%) were mixed cultures. Microorganisms of the genus Streptococcus were the most frequently isolated (20.95%), followed by bacteria of the genus Pseudomonas (8.50%), Trueperella pyogenes (7.26%), Staphylococcus (6.63%) and Escherichia coli (6.22%). Ninety-one different isolates were obtained from healthy mouths, and again, microorganisms of the genus Streptococcus were the most frequent (16.48%), followed by bacteria of the genus Staphylococcus (13.18%), Pseudomonas (9.89%) and Moraxella (6.59%). Based on these and previous results, it could be concluded that the normal microbiota of the oral cavity could be involved in the development of OMO lesions when there is an injury of the gingiva that enables the entry of bacteria to the oral mucosa that eventually settle locally in bony tissues, causing mandibular osteomyelitis.

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“…The richness and diversity of the dental microbiome of ruminants in health and diseased phenotypes (Borsanelli et al 2018(Borsanelli et al , 2021(Borsanelli et al , 2022b(Borsanelli et al , 2022c suggest a robust source of possibilities and risks in orofacial infections. Of this predominantly strict anaerobic microbiota, there are several opportunistic bacteria with invasive capacity, including aerobic or facultative microorganisms detected when using only conventional-bacterial culture (Benito-Peña et al 2010, Amorim et al 2011, Rasooli et al 2018. Indeed, the richness and diversity of the anaerobic microbiota associated with mandibular infections are underestimated when this diagnostic method is used (Arcaute et al 2021) since some groups of microorganisms, such as spirochetes, cannot be cultivated (Arweiler & Netuschil 2016).…”

Section: Introductionmentioning

confidence: 99%

Fusobacterium necrophorum predominates in the microbiota of mandibular dental abscess in Blastocerus dichotomus

Borsanelli,

Athayde,

Saraiva

et al. 2024

Pesq. Vet. Bras.

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Dental abscess in ruminants is an acute polymicrobial infection, usually resulting from periodontal disease or endodontic infection, with consequences for animal health and welfare. The present study aimed to describe the bacterial microbiota of dental abscesses in Blastocerus dichotomus. Biological material from mandibular dental abscesses, punctured with a sterile syringe and needle during routine veterinary curative procedures or necropsies, was collected from three ex-situ marsh deer. Bacteria were identified using high-throughput sequencing of the 16S ribosomal RNA gene. The three specimens had the presence of facial bulging, and two died because of severe emaciation with a history of progressive weight loss. Bacteroides (38.6%), Fusobacterium (36.65%), and Porphyromonas (7.49%) represented the most abundant genera and Fusobacterium necrophorum (35.69%), Porphyromonas levii (3.12%) and Porphyromonas gulae (1.78%) were among the ten most represented species in the microbiota of mandibular abscess in Blastocerus dichotomus. These molecular findings demonstrate a broader diversity of species in the polymicrobial nature of dental abscesses in B. dichotomus than was previously reported when culture-dependent methods were used in the diagnosis.

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Surto de abscesso mandibular por Pseudomonas aeruginosa em ovinos

Cited by 3 publications

References 4 publications

Management of Risk Factors Associated with Chronic Oral Lesions in Sheep

Management of Risk Factors Associated with Chronic Oral Lesions in Sheep

Comparative Study of Bacterial Isolates in Ovine Mandibular Osteomyelitis and Oral Microbiota of Healthy Sheep

Fusobacterium necrophorum predominates in the microbiota of mandibular dental abscess in Blastocerus dichotomus

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