Pyometra and unilateral uterine horn torsion in a sheep

Castillo, JM González de Aledo; Dockweiler, JC; Cheong, S.H.; Amorim, Mariana Diel de

doi:10.1111/rda.13101

Cited by 9 publications

(7 citation statements)

References 8 publications

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“…As expected, E. coli was isolated from most of the uterine contents of dogs with pyometra. This result is in accordance with previous studies showing that E. coli is the main bacterium involved in pyometra [ 6 , 27 , 28 ].…”

Section: Discussionsupporting

confidence: 94%

Characterization of Escherichia coli in Dogs with Pyometra and the Influence of Diet on the Intestinal Colonization of Extraintestinal Pathogenic E. coli (ExPEC)

Xavier

Silva

Trindade

et al. 2022

Veterinary Sciences

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Despite its high frequency and clinical relevance, the pathogenesis of canine pyometra remains poorly understood. The most accepted hypothesis is that bacteria involved ascend from the intestinal tract, causing the uterine infection. Extraintestinal pathogenic Escherichia coli (ExPEC) is the most frequent pathogen in canine pyometra, accounting for 57–100% of cases. The aim of the present study was to determine the frequency of phylogenetic groups and virulence factors in E. coli strains isolated from the uterine and rectal swabs of bitches with pyometra (n = 72) and from rectal swabs from healthy bitches fed commercial dry feed (n = 53) or a raw meat-based diet (RMBD; n = 38). A total of 512 strains of E. coli were isolated and divided into five categories according to the origin of the sample: 120 isolates from the uterine content of dogs with E. coli pyometra, 102 from the feces of bitches with E. coli pyometra, 75 from the feces of bitches without E. coli pyometra, 130 feces samples from healthy dogs fed commercial feed, and 85 feces samples from healthy dogs fed a raw meat-based diet. E. coli strains belonging to the B2 phylogroup and positive for virulence factor genes associated with adhesion (fimbriae type P [papC]) and production of toxins (α-hemolysin [hlyA] and uropathogenic specific protein [usp]) predominated in the uterine content and rectal swabs of bitches with E. coli pyometra. Interestingly, a lower growth rate of E. coli from the B2 phylogroup was observed in dogs fed a RMBD than in those fed commercial dry feed. The present study suggests that intestinal colonization by certain types of E. coli could be a risk factor for the occurrence of E. coli pyometra in bitches and that diet can influence intestinal colonization by such strains.

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Section: Discussionsupporting

confidence: 94%

Characterization of Escherichia coli in Dogs with Pyometra and the Influence of Diet on the Intestinal Colonization of Extraintestinal Pathogenic E. coli (ExPEC)

Xavier

Silva

Trindade

et al. 2022

Veterinary Sciences

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“…There is one other report of uterine torsion and fetal mummification in a ewe in the literature 6 . Castillo et al 7 report a case of pyometra associated with torsion of a uterine horn, again suggesting some chronicity associated with the condition. A second case of uterine torsion and fetal mummification initially detected at routine pregnancy diagnosis and subsequently diagnosed at post‐mortem examination by the authors (unpublished data) adds further support that the condition may be undiagnosed by farmers.…”

Section: Figurementioning

confidence: 99%

“…The prevalence under Australian management conditions is unknown. There are very few cases of ovine uterine torsion reported in the literature 2,4–7 . It is generally considered an acute condition which presents at parturition as dystocia and requires prompt intervention 4,5 .…”

Section: Figurementioning

confidence: 99%

Hydroureteronephrosis and fetal mummification secondary to uterine torsion in a Merino ewe

et al. 2020

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A 6 year old pluriparous Merino ewe was presented for investigation of a large intra-abdominal mass. Post-mortem examination revealed a 360 clockwise uterine torsion was present with a mummifying fetus. The torsion involved the left ureter resulting in a severe hydroureteronephrosis. Uterine torsion is uncommon in the ewe, occurring in less than 0.1% of pregnancies in one report (Mahmoud et al. Livest Res Rural Dev 2018;30), but cases are likely to be undiagnosed, particularly under the extensive management conditions typical of Australia. The chronicity of the condition in this ewe would support this statement. To the authors' knowledge this is the first reported case of hydroureteronephrosis secondary to uterine torsion in any species.

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“…8 Furthermore, severe acute uterine torsion can lead to placental abruption 9 and intrauterine fetal death. [10][11][12]…”

Section: Clinical Manifestations Of Uterine Torsion During Gestationmentioning

confidence: 99%

Clinical analysis of uterine torsion and fibroids in full-term pregnancy: A case report and review of the literature

et al. 2020

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This study was performed to describe the clinical features, risk factors, and treatment methods of uterine torsion in pregnancy. The most common symptoms are abdominal pain, fetal heart rate changes, and failure of cervical dilatation and are often accompanied by complete or partial placental abruption. Preoperative diagnosis is challenging even with the use of ultrasound. Uterine torsion in the third trimester is correlated with the presence of multiple uterine fibroids. The causes of gravid uterine torsion vary and the clinical manifestations are nonspecific. Early diagnosis and improved detection approaches are the keys to treatment of patients with uterine torsion. However, the preoperative diagnosis remains difficult and the diagnosis is often made during cesarean section.

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Pyometra and unilateral uterine horn torsion in a sheep

Cited by 9 publications

References 8 publications

Characterization of Escherichia coli in Dogs with Pyometra and the Influence of Diet on the Intestinal Colonization of Extraintestinal Pathogenic E. coli (ExPEC)

Characterization of Escherichia coli in Dogs with Pyometra and the Influence of Diet on the Intestinal Colonization of Extraintestinal Pathogenic E. coli (ExPEC)

Hydroureteronephrosis and fetal mummification secondary to uterine torsion in a Merino ewe

Clinical analysis of uterine torsion and fibroids in full-term pregnancy: A case report and review of the literature

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