The Veterinary record. 06/2011; 169(2):50.
ABSTRACT: This paper describes the cloning and sequence analysis of the cDNA's encoding the canine homologues of interleukin-1 receptor antagonist (IL-1ra), tumour necrosis factor receptor extra-cellular domain (TNFR/ECD) and tissue inhibitor of metalloproteinase-2 (TIMP-2). The coding sequences for canine IL-1ra and TNFR/ECD were obtained using reverse transcription polymerase chain reaction (RT-PCR) using RNA harvested from canine peripheral blood mononuclear cells (PBMC) and TIMP-2 was isolated in a similar fashion from the canine D17 osteosarcoma cell line. Sequence analysis of the canine genes demonstrated open reading frames of 531, 633 and 663 base pairs (bp), respectively. All three canine proteins IL-1ra, TNFR/ECD and TIMP-2 (177, 211 and 221 amino acids, respectively) showed considerable sequence similarity with the homologous sequences published for other species.
Veterinary Immunology and Immunopathology 02/2001; 78(2):207-14. · 2.08 Impact Factor
ABSTRACT: Measurement of the acute phase serum protein, haptoglobin (Hp), is performed by biochemical methods based on haemoglobin binding,
in many veterinary diagnostic laboratories. During attempts to develop a robust biochemical assay for serum Hp it was discovered
that serum albumin interfered with the assay system increasing results by as much as 0.28 mg/ml, which could affect interpretation
of results especially in species with low normal Hp concentrations. A reagent cocktail (SB-7) was devised which inhibited
the interfering effect of albumin. An automated assay for Hp utilising SB-7 was developed for production as a biochemical
assay kit and was evaluated for use in veterinary diagnosis. The intra-assay coefficients of variation were of 0.9%, 0.9%
and 1.3% for Hp concentrations of 2.0, 1.0 and 0.23 mg/ml, respectively and interassay coefficients of variation of 1.7% and
4.5% for Hp of 2.08 mg/ml and 0.24 mg/ml, respectively. The lower limit of detection of was 0.02 mg/ml, linearity extended
to 8 mg/ml and recovery was 101±7% (mean ±SD). The assay had correlation coefficients (R2) of 0.96 and 0.90 when compared with immunodiffusion assays of canine Hp and bovine Hp, respectively. Lipaemia and bilirubinaemia
caused no interference. Haemolysis did not affect measurement of low levels of Hp, but at serum Hp concentrations of 0.4 and
1.8 mg/ml the apparent Hp concentration was decreased. Elevated concentrations of Hp were measured in cattle with mastitis,
dogs with polyarthritis and rats experimentally infected withBordetella pertussis. The automated assay is precise and has negligible interference from albumin.
Comparative Haematology International 04/1999; 9(3):117-124.
Advances in veterinary medicine 02/1999; 41:643-55.
ABSTRACT: Feline infectious peritonitis (FIP) is notoriously difficult to differentiate from the many other diseases with similar clinical signs and at present the only conclusive diagnostic test is the histopathological examination of a biopsy. The potential value of raised levels of the acute phase reactants, alpha 1-acid glycoprotein (AGP) and haptoglobin in the diagnosis of the disease was investigated. The concentrations of the two proteins were determined in serum samples from healthy cats and gave reference ranges of 0.1 to 0.48 g/litre and 0.04 to 3.84 g/litre, respectively. Levels of AGP greater than 1.5 g/litre in serum, plasma or effusion samples were found to be of value in distinguishing field cases of FIP from cats with similar clinical signs and differentiated these two groups of cats more effectively than the albumin:globulin ratio. The concentration of haptoglobin was higher in cats with FIP than in the group of healthy cats, but this protein was not of value in the diagnosis of FIP. Serum samples from feline immunodeficiency virus-infected cats were also analysed for these proteins and their concentrations were significantly elevated, illustrating that raised levels of AGP and haptoglobin are not pathognomonic for FIP.
The Veterinary record 10/1997; 141(12):299-303. · 1.25 Impact Factor