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Biomedical subjects

A G Matthews

Publications and source records attributed to A G Matthews.

24 records · Page 2Linked to original sources
PubMed1983

A reagin-like antibody in horse serum. II. Anti-human IgE induced reversed cutaneous anaphylaxis-like responses in horse skin.

Fc specific anti-human IgE serum induced prolonged reversed cutaneous anaphylaxis (RCA)-like reactions in horse skin. Morphologically and histologically, these reactions resembled passively induced late cutaneous anaphylaxis responses in human skin, but differed from reversed passive Arthus responses induced in horse skin using anti-horse IgG serum. The induction of RCA-like responses in horse skin by anti-human IgE indicates shared Fc antigenic determinants on human IgE and a horse homocytotropic or reagin-like antibody.

Animals↗
PubMed1982

Serum protein electrophoresis in horses and ponies.

A method of electrophoresis of horse serum on agarose gels (pH 8.6) is described, together with a system for interpreting changes in the electrophoretic zones based upon the relative distribution of the major serum proteins. Differences in the protein composition of the individual electrophoretic zones of horses and ponies were recorded, although this variation probably reflects differences in management and the presence of subclinical disease.

Animals↗
PubMed1979

Isoelectric focusing of horse acidic prealbumins on thin-layer polyacrylamide gels.

The paper describes a technique of thin-layer polyacrylamide gel isolectric focusing of horse serum, within a pH range of 4.0--6.0, which permits the improved resolution of the acidic prealbumin protein bands. The increased heterogeneity of the Pr prealbumin antiprotease allele products apparent using this technique is described and discussed in detail, and the potential use of the technique in routine Pr phenotyping is considered.

Animals↗
PubMed1979

Identification and characterisation of the major antiproteases in equine serum and an investigation of their role in the onset of chronic obstructive pulmonary disease (COPD).

Three major antiprotease components in equine serum were identified and characterised. These were the acidic prealbumin Pr, the homologue of human alpha-1 antitrypsin and 2 protease binding proteins, the acidic prealbumin Xc and alpha-2 macroglobulin, both capable of inhibiting the proteolytic activity of trypsin, but with only limited inhibitory effect on its esterolytic activity. The possible role of these serum antiproteases in the onset of chronic obstructive pulmonary disease (COPD), analogous to the hereditary dysproteinaemia of alpha-1 antitrypsin in man, was investigated. There was no evidence of a genetically determined variation in the protease binding proteins but an increased frequency of the electrophoretically slower Pr antitrypsin alleles was present in horses affected with COPD. However, because of both the mixed breeding of the animals investigated and the lack of correlation with low serum trypsin inhibitory capacity, measured by inhibition of DL-BAPA hydrolysis, the significance of this observation could not be critically assessed.

Alleles↗
PubMed1978

Bovine auto-immune haemolytic anaemia.

A six-months-old heifer died within two days of showing signs of anaemia and dyspnoea. The death was attributed to autoimmune haemolytic anaemia (AHA) because of auto-agglutination which increased on Coomb's testing and the presence of antibovine IgG on the erythrocyte surfaces.

Anemia, Hemolytic, Autoimmune↗