[The epigenome in neurological disorders: a new marker for understanding neuronal dysfunction]

Area of Science:

• Epigenetics: The study of heritable changes in gene expression without altering the underlying DNA sequence.
• Genomic DNA: The complete set of genetic material present in a cell.

Context:

• Epigenomic abnormalities are linked to congenital diseases.
• Environmental factors can alter epigenomic patterns.
• Epigenomic alterations contribute to acquired mental and neurological disorders.

Purpose:

• To explore the role of epigenomic patterns in disease.
• To define epigenomic signatures as markers of past environmental insults.
• To establish the foundation for preemptive, individualized medicine.

Summary:

• The epigenome comprises chemical modifications on DNA that regulate gene expression.
• Abnormal epigenomic patterns are implicated in both congenital and acquired diseases, including mental and neurological conditions.
• An epigenomic signature, representing cumulative environmental exposures, offers a novel biomarker.

Impact:

• Epigenomic signatures can serve as individual-based markers for preemptive medical strategies.
• This approach moves beyond population-based medicine towards personalized risk assessment.
• Understanding epigenomic signatures facilitates the development of targeted interventions for acquired diseases.