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The effect of pyridoxal-5-phosphate on serum alanine aminotransferase activity in dogs suffering from canine babesiosis
2009
Myburgh, E.C.(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies) | Goddard, A.(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies)
Accurate measurements of serum aminotransferase (ALT) activity in dogs relies on the endogenous pro-enzyme pyridoxal 5-phosphate (P5P). The purpose of this study was to determine whether the exclusion of P5P from the analytical method causes an underestimation of serum ALT activity in dogs suffering from babesiosis and in those manifesting evidence of hepatocellular damage, and to determine if anorexia causes sufficient P5P depletion to affect in vitro serum ALT activity. One-hundred-and-twenty healthy control dogs and 105 Babesia-infected dogs were included in the study. Two methods for ALT measurement were used: Method 1 included P5P, and Method 2 excluded P5P from the reaction mixture. Higher serum ALT activity was measured with Method 1 in the Babesia-infected dogs (P < 0.001), as well as in 14 dogs with suspected hepatocellular damage (P = 0.03). Duration of anorexia had no effect, irrespective of the method used. Although inclusion of P5P to the reaction mixture consistently resulted in higher measured serum ALT activity, the differences were too small to have led to incorrect diagnoses in the Babesia-infected dogs suspected of liver disease.
Show more [+] Less [-]Vitamin D status in dogs with babesiosis
2019
Dvir, Eran(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies,Tel Hai Academic College) | Rosa, Chantal(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies,Northwest Veterinary Specialists) | Mellanby, Richard J.(University of Edinburgh, Roslin Institute School of Veterinary Studies) | Handel, Ian(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies,Tel Hai Academic College) | Schoeman, Johan P(University of Pretoria Faculty of Veterinary Science Department of Companion Animal Clinical Studies,Tel Hai Academic College)
Canine babesiosis is a virulent infection of dogs in South Africa caused principally by Babesia rossi. Hypovitaminosis D has been reported in a wide range of infectious diseases in humans and dogs, and low vitamin D status has been associated with poor clinical outcomes. However, the relationship between vitamin D status and canine babesiosis has not been investigated. The objective of this study was to examine the relationship between the presence and severity of B. rossi infection and vitamin D status of infected dogs. Owners with dogs with a confirmed diagnosis of B. rossi infection and of healthy control dogs were invited to enrol onto the study. Vitamin D status was assessed by measurement of serum concentrations of the major circulating vitamin D metabolite, 25-hydroxyvitamin D (25[OH]D). Dogs with babesiosis (n = 34) had significantly lower mean serum 25(OH)D concentrations than healthy dogs (n = 24) (37.76 ± 21.25 vs. 74.2 ± 20.28 nmol/L). The effect of babesiosis on serum 25(OH)D concentrations was still significant after adjusting for any effect of age, body weight and sex. There was a negative relationship between serum 25(OH)D concentrations and disease severity in dogs with babesiosis. Serum concentrations of creatinine and alanine aminotransferase and time to last meal were not associated with serum 25(OH)D concentrations in dogs with babesiosis. In conclusion, dogs with Babesia rossi infections had lower serum 25(OH)D concentrations than healthy dogs. The inverse correlation between 25(OH)D concentrations and the clinical severity score indicate that hypovitaminosis D might be a helpful additional indicator of disease severity.
Show more [+] Less [-]Effect of diminazene block treatment on live redwater vaccine reactions
2004
Combrink, M.P. | Troskie, P.C. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.)
A review of the infectious diseases of African wild ruminants
2001
Worthington, R.W. | Bigalke, R.D.
Progression towards endemic stability to bovine babesiosis in cattle introduced onto a game ranch
Regassa, A.; Penzhorn, B.L.; Bryson, N.R.(Pretoria Univ., Onderstepoort (South Africa). Veterinary Tropical Diseases Dept.)
PCR-based detection of the transovarial transmission of Uruguayan Babesia bovis and Babesia bigemina vaccine strains
2003
Gayo, V. (Agriculture, Livestock and Fisheries Ministry, Montevideo (Uruguay)) | Romito, M. | Nel, L.H. | Solari, M.A. | Viljoen, G.J.
The role of parasitic diseases as causes of mortality in cattle in a high potential area of central Kenya: a quantitative analysis
2000
Kanyari, P.W.N. | Kagira, J. (Nairobi Univ. (Kenya). Dept. of Pathology, Microbiology and Parasitology)