Objective:

To emphasize the utility of animal models in defining PDC's role in energy metabolism and to evaluate the potential beneficial effects of dietary modifications and drug treatments.

Approach:

Key Findings:

• Mouse models of systemic and brain-specific PDC deficiency replicate several cerebral abnormalities seen in PDC-deficient subjects.
• Animal models have provided insights into impairments in cellular proliferation, migration, and differentiation due to PDC deficiency.
• All animal models studied so far have null mutations in PDC genes; creating missense mutations is necessary for understanding genotype–phenotype relationships.

Interpretation:

Animal models are valuable for evaluating dietary and drug treatments for PDC deficiency and understanding its metabolic implications.

Limitations:

• Current models primarily carry null mutations, limiting the exploration of specific genotype–phenotype correlations.
• The clinical phenotypic spectrum of PDC deficiency is heterogeneous, complicating the establishment of clear genotype-phenotype relationships.

Conclusion:

Animal models, especially mice, are essential for studying PDC deficiency and its effects on metabolism and cerebral development.

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