Does alpha-1-antitrypsin PInull phenotype exist?
โ Scribed by Jean-Pierre Martin; Richard Sesboue; Roland Charlionet; Claude Ropartz
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 377 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0340-6717
No coin nor oath required. For personal study only.
โฆ Synopsis
A second case of Pi null alpha-1-antitrypsin (AA) deficiency is described. In fact, the serum's subject contains 5 mug of AA per millilitre. With radiolabelled specific antibodies, it is possible to describe the Pi phenotype associated to this deficiency. The pattern which is obtained is like the ordinary Pi M, but 500 times lower than normal values. In contrast to a common deficient variant (ZZ or MZ), the subject tissues do not contain periodic acid-schiff positive inclusion bodies. The "normal" pattern obtained after antigen-antibody crossed electrophoresis, would be in favour of a deficient anomaly hereditarily transmitted.
๐ SIMILAR VOLUMES
Alpha-1-antitrypsin Pi phenotyping was performed by thin-layer isoelectric focusing on samples from 1653 healthy white blood donors. The variants were confirmed by the acid-starch gel technique and crossed immunoelectrophoresis, with complete agreement between the two methods. The allele frequencies
The role of genetic factors in the etiology of vitiligo has been discussed by some workers [5,8], and the familial incidence of vitiligo transmitted by an autosomally dominant gene of variable penetrance has already been established [8]. About 40% of patients report a positive family history of the
Recent reports have suggested that the alpha-1-antitrypsin allele Piz, which in homozygotes results in severe deficiency of this important protease inhibitor, is maintained at a relatively high gene frequency through the mechanism of segregation distortion. We report here on 121 nuclear families sel