Naslov
Genotyping of alpha-antitrypsin in ten Croatian families

Autori
Žuntar, Irena ; Topić, Elizabeta ; Jurčić, Zvonko ; Zubčić, Ana

Izvornik
Clinical Biochemistry (0009-9120) 33 (2000), 5; 377-82

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
alpha-antitrypsin deficiency; DNA method; genotyping; hereditary disorder; PCR-RFLP

Sažetak
Objectives: The aims of the study were to determine a-antitrypsin (AAT) genotype by a simple DNA-based method and to investigate the association of AAT genotype and serum AAT concentration in a group of ten families. Methods and results: AAT genotype was determined by PCR-RFLP and serum concentration by radial immunodiffusion in samples from each member of ten families (mother, father, an child/children). In the group of parents, five normal genotypes, Pi MM, with a normal serum AAT concentration, and fifteen Pi MZ genotypes, four of them with slightly decreased (43%-66% of mean) AAT were detected. In the group of children, particular genotypes followed the mode of inheritance. There were eight Pi MZ, three of them with slightly decreased (52%-60% of the mean) AAT concentration, and five Pi ZZ genotypes with considerably decreased (24%-45% of the mean) AAT concentration. Conclusions: PCR-RFLP is the method of choice for AAT genotyping. AAT concentration is not a reliable biochemical marker of AAt deficiency. Determination of AAT genotype in family studies allows the risk of deficiant allele inheritance to be followed up and assessed. Early diagnosis of a defficient AAT genotype contributes to the success of currently widely available AAT replacement therapy.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti

POVEZANOST RADA