Analbuminemia in a neonate

Area of Science:

• Biochemistry
• Pediatrics
• Genetics

Background:

• Analbuminemia is a rare congenital disorder characterized by the absence of serum albumin.
• This condition is typically identified in the neonatal period.
• Review of global literature identifies limited reported cases.

Purpose of the Study:

• To report a case of analbuminemia in a small-for-gestational-age infant.
• To review existing literature on analbuminemia.
• To investigate potential compensatory mechanisms and biochemical factors associated with analbuminemia.

Main Methods:

• Case report of a neonate diagnosed with analbuminemia.
• Literature review of twelve previously reported cases.
• Biochemical analysis including plasma amino acids.

Main Results:

• Patients with analbuminemia are largely asymptomatic, with mild ankle edema and fatigue.
• Compensatory mechanisms include prolonged protein half-lives, altered serum protein levels, hypotension, and enhanced diuresis.
• Extremely low plasma tryptophan levels were observed, a novel finding in analbuminemia.

Conclusions:

• Analbuminemia is a condition with minimal clinical manifestations despite the absence of serum albumin.
• The body exhibits remarkable compensatory mechanisms to mitigate the effects of low albumin.
• Low plasma tryptophan may play a role in the pathophysiology of albumin synthesis in analbuminemia.