| 1. |
- Aspán, Anna, et al.
(författare)
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Genotypic variation among Staphylococcus aureus isolates from cases of clinical mastitis in Swedish dairy cows
- 2010
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 185, s. 188-192
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Tidskriftsartikel (refereegranskat)abstract
- The main aim of this study was to examine genotypic diversity of 82 Staphylococcus aureus isolates from cases of acute clinical mastitis in cattle using pulsed-field gel electrophoresis, and to investigate pulso-type differences between geographical regions of Sweden. The work also investigated haemolysis type (alpha, alpha beta), beta-lactamase production, and the association between S. aureus pulsotypes and breed, parity and presence of teat lesions. All isolates came from different farms.In total, 25 pulsotypes were found, but most only once or twice. The most common pulsotype accounted for 26% of the isolates and was found in all regions. The distribution of pulsotypes in the southern region of the country differed from the northern and middle regions. alpha beta- or alpha-Haemolysis was found in 66% and 34% of the isolates, respectively, and beta-lactamase production was found in 9% of the isolates. Variation in haemolysis type or beta-lactamase production was found within some pulsotypes. The results indicate that some pulsotypes have spread widely between herds within the country. (C) 2009 Elsevier Ltd. All rights reserved.
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| 2. |
- Bergknut, Niklas
(författare)
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Biomechanical evaluation of a novel nucleus pulposus prosthesis in canine cadaveric spines
- 2012
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 192, s. 199-205
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Tidskriftsartikel (refereegranskat)abstract
- Partial disc replacement is a new surgical technique aimed at restoring functionality to degenerated intervertebral discs (IVDs). The aim of the present study was to assess biomechanically the behaviour of a novel nucleus pulposus prosthesis (NPP) in situ and its ability to restore functionality to the canine IVD after nuclectomy alone or after combined dorsal laminectomy and nuclectomy. Nine canine T13-L5 specimens (L2L3 group) and 10 L5-Cd1 specimens (LS group) were tested biomechanically in the native state, after nuclectomy (L2L3 group) or after combined dorsal laminectomy and nuclectomy (LS group), and after insertion of the NPP. Range of motion (ROM), neutral zone (NZ), and neutral zone stiffness (NZS) were determined in flexion/extension, lateral bending, and axial rotation.Nuclectomy alone and combined dorsal laminectomy and nuclectomy caused significant instability in all motion directions. Implantation of the NPP resulted in significant restoration of the parameters (ROM, NZ, and NZS) towards the native state; however, fragmentation/herniation of the NPP occurred in 47% of the cases. In conclusion, the NPP has the ability to improve functionality of the nuclectomized canine IVD. The high rate of NPP failure requires modifications directed at the integrity of the NPP and its confinement to the nuclear cavity. (C) 2011 Elsevier Ltd. All rights reserved.
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| 3. |
- Bergknut, Niklas, et al.
(författare)
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Intervertebral disc degeneration in the dog. Part 1: Anatomy and physiology of the intervertebral disc and characteristics of intervertebral disc degeneration
- 2013
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 195, s. 282-291
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Forskningsöversikt (refereegranskat)abstract
- Intervertebral disc (IVD) degeneration is common in dogs and can give rise to a number of diseases, such as IVD herniation, cervical spondylomyelopathy, and degenerative lumbosacral stenosis. Although there have been many reports and reviews on the clinical aspects of canine IVD disease, few reports have discussed and reviewed the process of IVD degeneration. In this first part of a two-part review, the anatomy, physiology, histopathology, and biochemical and biomechanical characteristics of the healthy and degenerated IVD are described. In Part 2, the aspects of IVD degeneration in chondrodystrophic and non-chondrodystrophic dog breeds are discussed in depth
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| 4. |
- Bergknut, Niklas, et al.
(författare)
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Intervertebral disc degeneration in the dog. Part 2: Chondrodystrophic and non-chondrodystrophic breeds
- 2013
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 195, s. 292-299
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Tidskriftsartikel (refereegranskat)abstract
- Dogs can be grouped into two distinct types of breed based on the predisposition to chondrodystrophy, namely, non-chondrodystrophic (NCD) and chondrodystrophic (CD). In addition to a different process of endochondral ossification, NCD and CD breeds have different characteristics of intravertebral disc (IVD) degeneration and IVD degenerative diseases. The anatomy, physiology, histopathology, and biochemical and biomechanical characteristics of the healthy and degenerated IVD are discussed in the first part of this two-part review. This second part describes the similarities and differences in the histopathological and biochemical characteristics of IVD degeneration in CD and NCD canine breeds and discusses relevant aetiological factors of IVD degeneration. (C) 2012 Elsevier Ltd. All rights reserved.
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| 5. |
- Bergknut, Niklas, et al.
(författare)
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Intervertebral disc disease in dogs - Part 1: A new histological grading scheme for classification of intervertebral disc degeneration in dogs
- 2013
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 195, s. 156-163
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Tidskriftsartikel (refereegranskat)abstract
- Three independent observers evaluated 35 IVDs at different stages of degeneration using the scheme. Glycosaminoglycan contents of the nucleus pulposus and macroscopic grading according to Thompson, which are considered 'gold standards' for IVD degeneration, were used to validate the scheme. Reproducibility was assessed by analysing the inter-observer reliability of all individual variables of the grading scheme, using a weighted kappa analysis. Significant correlations were found between Thompson grading and total histological score (r = 0.94; P < 0.01) and between glycosaminoglycan content and total histological score (r = -0.72; P < 0.01). Most individual histological variables showed 'moderate' to 'almost perfect' inter-observer reliability. The high correlation with the gold standards in combination with the high reproducibility indicates that the proposed histological grading scheme is reliable and objective for classification of IVD degeneration in both chondrodystrophic and non-chondrodystrophic dog breeds. (C) 2012 Elsevier Ltd. All rights reserved.
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| 6. |
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| 7. |
- Bergsten, Christer
(författare)
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The effect of an acidified, ionized copper sulphate solution on digital dermatitis in dairy cows
- 2012
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 193, s. 659-663
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Tidskriftsartikel (refereegranskat)abstract
- At the start of the study 21/110 cows had ulcerative DD lesions with 10 on the left hind foot, 8 on the right and 3 on both. These lesions, as well as any new lesions which arose during the study, were treated with chlortetracycline spray. During the study 440 observations were made and seven new DD lesions were recorded on left feet (copper treated) and 20 on right feet (formalin treated). Based on survival analysis, the risk of developing a new ulcerative DD lesion on copper-treated (left hind) feet was almost three times less (RR = 0.37, 95% CI 0.16-0.91) than formalin-treated (right hind) feet. Cure rates of DD lesions were not different between copper and formalin. (C) 2012 Elsevier Ltd. All rights reserved.
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| 8. |
- Bidokhti, Mehdi, et al.
(författare)
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Tracing the transmission of bovine coronavirus infections in cattle herds based on S gene diversity
- 2012
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 193, s. 386-390
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Tidskriftsartikel (refereegranskat)abstract
- The analysed BCoV strains showed a high sequence identity, regardless of whether they were obtained from outbreaks of respiratory disease or diarrhoea or from calves or adult cattle. Circulation of an identical BCoV strain during a 4-month period was demonstrated in calves in one dairy herd. In a regional epizootic of winter dysentery in Northern Sweden, highly similar BCoV strains were detected. In the Southern and Central regions, several genotypes of BCoV circulated contemporaneously, indicating that in these regions, which had a higher density of cattle than the Northern regions, more extensive transmission of the virus was occurring. Identical BCoV sequences supported the epidemiological data that inter-herd contact through purchased calves was important. Swedish BCoV strains unexpectedly showed a high homology with recently detected Italian strains. This study shows that molecular analysis of the spike (S) glycoprotein gene of BCoV can be a useful tool to support or rule out suspected transmission routes. (C) 2012 Elsevier Ltd. All rights reserved.
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| 9. |
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| 10. |
- Boqvist, Sofia, et al.
(författare)
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The association between rainfall and seropositivity to Leptospira in outdoor reared pigs
- 2012
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Ingår i: Veterinary Journal. - : Elsevier BV. - 1090-0233 .- 1532-2971. ; 193, s. 135-139
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Tidskriftsartikel (refereegranskat)abstract
- Data on rainfall and temperature were retrieved for the respective farms. For each millimetre of extra rainfall, there was an increase in the odds ratio (OR) for seropositivity to sv Bratislava of 4.3 (95% Cl 1.9-10), and to strain mouse 2A of 2.5 (95% CI 1.0-6.4). There was no association between seropositivity and temperature. This study indicates that different climate conditions within the northern temperate climate zone may be of importance for the presence of Leptospira-seropositivity in mammals. (C) 2011 Elsevier Ltd. All rights reserved.
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