Elevated propionate and its association with neurological dysfunctions in propionic acidemia

Area of Science:

• Biochemistry
• Metabolic Disorders
• Neuroscience

Background:

• Propionate, a short-chain fatty acid (SCFA), has recognized health benefits.
• Elevated propionate levels are linked to adverse effects in specific pathological conditions.
• Propionic acidemia (PA) is a rare genetic metabolic disorder affecting propionyl-CoA metabolism.

Purpose of the Study:

• To review propionate synthesis, physiological roles, and metabolism in healthy individuals and PA patients.
• To examine the pathological link between elevated propionate and neurological dysfunction in PA.
• To enhance understanding of propionate's metabolic effects in normal and disease states.

Main Methods:

• Literature review of propionate metabolism.
• Analysis of propionate synthesis and degradation pathways.
• Examination of genetic basis and biochemical consequences of PA.

Main Results:

• Mutations in propionyl-CoA carboxylase (PCC) genes (PCCA or PCCB) impair propionyl-CoA metabolism in PA.
• Metabolic block leads to accumulation of propionyl-CoA and propionate.
• Elevated propionate contributes to complications like neurological dysfunction in PA.

Conclusions:

• Understanding propionate metabolism is crucial for comprehending PA pathophysiology.
• Clarifying propionate's role in PA can inform therapeutic strategies.
• Further research into propionate's full metabolic spectrum is warranted.