Decreased serum caeruloplasmin levels in patients with Wilson's disease have been attributed to decreased caeruloplasmin synthesis in the hepatocyte. An immunoperoxidase procedure was used to identify caeruloplasmin in liver biopsies. The pattern of staining in biopsies from patients with Wilson's disease did not differ from the pattern seen in normal adult or neonatal liver. This indicates that immunoreactive caeruloplasmin is synthesized by the liver cell in Wilson's disease. Low serum levels of caeruloplasmin may reflect an abnormality of copper incorporation into the apoprotein or an abnormality of holocaeruloplasmin export.
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Graul et al. (1982) studied this question.
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