Solid-phase radioimmunoassay for estimation of elastin peptides in human sera
β Scribed by T.V. Darnule; M. McKee; A.T. Darnule; G.M. Turino; I. Mandl
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 484 KB
- Volume
- 122
- Category
- Article
- ISSN
- 0003-2697
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β¦ Synopsis
A sensitive, reproducible, and rapid radioimmunoassay was developed to determine elastin peptide content of human serum in nanogram amounts. Significant differences have been determined between normal volunteers, both smokers and nonsmokers, and patients wth chronic obstructive pulmonary disease. The average concentration of elastin peptides in 9 normal nonsmokers was 19.88 f 10.46 fig/ml serum, indistinguishable from that in 7 normal smokers which was 17.64 f 8.54 @g/ml. Average concentration of elastin peptides in 17 patients with lung disease was 53.38 + 22.46 pg/ml, significantly different (P < 0.001) from the healthy control group. The method outlined shows excellent reproducibility on multiple determinations and allows analysis of as many as 100 samples in 6-8 h.
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3-Endorphin-like peptides in blood plasma of normal human subjects were studied by means of a radioimmunoassay (RIA) and gel filtration. Plasma was extracted with silica gel, which was washed with water and 1 N HCI, and eluted with 50% acetone. Plasma extracts thus obtained and standard synthetic hu