A capillary isoelectric focusing (CIEF) method using bare fused-silica capillaries filled with polyethylene oxide (PEO) and carrier ampholyte solutions in the pH 3.5-5.0 range has been developed for the identification of alpha1-antitrypsin (α1AT) phenotypes in human serum. This novel procedure was routinely applied to the study of serum samples of five controls whose α1AT phenotype was previously identified and of twelve subjects whose α1AT phenotype was unknown. The results obtained allowed us to confirm or identify the α1AT phenotype in all sera tested. This procedure seems particularly suitable for identification of α1AT variants associated with diseases of clinical relevance.
|Number of pages||9|
|Publication status||Published - 2000|
- α-antitrypsin phenotypes
- Capillary isoelectric focusing
- Polyethylene oxide
ASJC Scopus subject areas
- Clinical Biochemistry