Abstract
Alpha-1 antitrypsin deficiency (A1ATD) is an intriguing condition causing liver disease in children and chronic obstructive pulmonary disease in young adult smokers. The pathogenesis of liver disease is related to retention of the abnormal PiZ polymers in the hepatocytes and their unexplained triggering of the chronic cellular injury, which in a proportion, but not all of the affected, could lead to progressive inflammation, fibrosis and cirrhosis. It appears that evolution of liver disease and development of portal hypertension are more aggressive in the ones who present with prolonged neonatal jaundice with more significant histological injury and more abnormal biochemical changes. At present the only treatment available is liver transplantation, despite several potential studied cellular mechanisms, such as abnormal polypeptide polymerisation or impaired cellular autophagy, which have been shown to be modifiable in the experimental models of A1ATD. Adolescents with this condition appear to have escaped severe liver disease and avoided liver transplantation, but need to be continuously monitored due to increased possibility of develo** respiratory complications and hepatic malignancies in comparison to general population. It remains unexplained why genotypically identical individuals have different clinical outcomes even in the same family, but it is hoped that better understanding of patophysiology would result in ability to modify the severe phenotypes in the future.
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Hadžić, N. (2022). Alpha-1 Antitrypsin Deficiency in the Transition Period. In: Hadžić, N., Samyn, M. (eds) Liver Disease in Adolescence. In Clinical Practice. Springer, Cham. https://doi.org/10.1007/978-3-030-98808-1_6
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DOI: https://doi.org/10.1007/978-3-030-98808-1_6
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