Mitochondrial Heteroplasmic Variants in Blood and Their Association with Cognitive Function in Late Midlife: Insights from the REGARDS Study - Report - MDSpire

Mitochondrial Heteroplasmic Variants in Blood and Their Association with Cognitive Function in Late Midlife: Insights from the REGARDS Study

  • By

  • Diddier Prada

  • Eva Morava -Kozicz

  • Aravind Lathika Rajendrakumar

  • Allison Kupsco

  • Corina Lesseur

  • Haritz Irizar

  • David Cantú-de-Leon

  • Claudia García-Cuellar

  • Andrea Ramírez

  • Jonathan González-Ruíz

  • Carol R. Horowitz

  • Mary Cushman

  • Jennifer Manly

  • Suzanne Judd

  • Emilia Bagiella

  • Andrea Baccarelli

  • Robbie Parks

  • April 21, 2026

  • 0 min

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Clinical Report: Mitochondrial Heteroplasmic Variants and Cognitive Function

Overview

Revise to specify which mitochondrial mutations are being studied and their relevance.

Background

Expand on the mechanisms of mitochondrial dysfunction and its implications for cognitive health.

Data Highlights

No specific numerical data was provided in the source material.

Key Findings

  • Mitochondrial heteroplasmic variants may be associated with cognitive performance in midlife.
  • Participants in the REGARDS study were predominantly non-Hispanic Black and White individuals aged 45 years or older.
  • Previous studies have shown inconsistent findings regarding the relationship between mitochondrial mutations and cognitive function.
  • Oxidative stress and mitochondrial dysfunction are proposed mechanisms linking mtDNA mutations to neurodegeneration.
  • Baseline mitochondrial function and its decline may influence cognitive decline prior to AD diagnosis.

Clinical Implications

Healthcare professionals should consider the potential impact of mitochondrial health on cognitive function, particularly in midlife patients. Further research into mitochondrial variants may provide insights into early biomarkers for cognitive decline and neurodegenerative diseases.

Conclusion

The study underscores the importance of mitochondrial variants in understanding cognitive decline during midlife. Continued exploration of this relationship may lead to novel approaches in the prevention and management of neurodegenerative conditions.

References

  1. Blood mitochondrial heteroplasmic variants and cognitive performance in late midlife: REGARDS study - PMC, 2023
  2. Acta Neuropathologica — Mitochondrial DNA Mutations in Heteroplasmy Associated with Frontotemporal Lobar Degeneration
  3. Brain — Limbic-Dominant Age-Related TDP-43 Encephalopathy in the Elderly: Insights from a Population-Based Analysis
  4. American Journal of Epidemiology — Reciprocal Relationships Between Physical Activity and Cognitive Function in Adults During Midlife: A 26-Year Longitudinal Study
  5. The Journal of Clinical Endocrinology & Metabolism — Investigating the Impact of SGLT2 Inhibitors on Cognitive Function and Aging Through Mendelian Randomization Analysis
  6. The 2024 NIA-AA biological definition of Alzheimer’s disease: linking biomarkers to clinical practice
  7. Alzheimer's Association Clinical Practice Guideline on the use of blood-based biomarkers in the diagnostic workup of suspected Alzheimer's disease within specialized care settings
  8. Blood mitochondrial heteroplasmic variants and cognitive performance in late midlife: REGARDS study - PMC

Original Source(s)

Mitochondrial Heteroplasmic Variants in Blood and Their Association with Cognitive Function in Late Midlife: Insights from the REGARDS Study

  • by Diddier Prada, Eva Morava -Kozicz, Aravind Lathika Rajendrakumar, Allison Kupsco, Corina Lesseur, Haritz Irizar, David Cantú-de-Leon, Claudia García-Cuellar, Andrea Ramírez, Jonathan González-Ruíz, Carol R. Horowitz, Mary Cushman, Jennifer Manly, Suzanne Judd, Emilia Bagiella, Andrea Baccarelli, Robbie Parks

  • April 21, 2026

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