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Alpha 1-antitrypsin deficiency and pregnancy
J A Kuller1, V L Katz, M C McCoy
1Department of Obstetrics and Gynecology, University of North Carolina at Chapel Hill 27599-7570, USA.
American Journal of Perinatology
|September 1, 1995
Summary
Alpha1-antitrypsin deficiency, an inherited lung disorder, can present differently. This case highlights a non-ZZ genotype with low alpha1-antitrypsin levels but no symptoms, despite pregnancy complications.
Area of Science:
- Pulmonology
- Genetics
- Obstetrics
Background:
- Alpha1-antitrypsin deficiency is an inherited pulmonary disorder caused by a deficiency in alpha1-antitrypsin, a key plasma protease inhibitor.
- Disease severity and symptom onset are influenced by genetic factors (genotype) and environmental exposures like smoking.
Observation:
- A pregnant patient with a non-ZZ genotype had a functional serum alpha1-antitrypsin level of 15% of normal.
- Despite low levels, the patient was clinically asymptomatic and a non-smoker.
- Her obstetric history included preterm labor in five pregnancies.
Findings:
- This case represents only the third reported instance of alpha1-antitrypsin deficiency during pregnancy.
- Non-ZZ genotypes or heterozygous carriers may experience favorable pregnancy outcomes, even with reduced alpha1-antitrypsin levels.
Implications:
- This case expands the understanding of alpha1-antitrypsin deficiency presentations, particularly in pregnancy.
- Further research is needed to clarify the relationship between non-ZZ genotypes, pregnancy, and alpha1-antitrypsin levels.