Complex I deficiencies in neurological disorders

Trends Mol Med. 2013 Jan;19(1):61-9. doi: 10.1016/j.molmed.2012.11.005. Epub 2012 Dec 19.

Abstract

Complex I is the point of entry in the mitochondrial electron transport chain for NADH reducing equivalents, and it behaves as a regulatable pacemaker of respiratory ATP production in human cells. Defects in complex I are associated with several human neurological disorders, including primary mitochondrial diseases, Parkinson disease (PD), and Down syndrome, and understanding the activity and regulation of complex I may reveal aspects of the underlying pathogenic mechanisms. Complex I is regulated by cyclic AMP (cAMP) and the protein kinase A (PKA) signal transduction pathway, and elucidating the role of the cAMP/PKA system in regulating complex I and oxygen free radical production provides new perspectives for devising therapeutic strategies for neurological diseases.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Cyclic AMP / metabolism
  • Down Syndrome / genetics
  • Down Syndrome / metabolism
  • Electron Transport Complex I / deficiency*
  • Humans
  • Mitochondrial Diseases / genetics
  • Mitochondrial Diseases / metabolism
  • Nervous System Diseases / genetics*
  • Nervous System Diseases / metabolism*
  • Oxidative Phosphorylation
  • Parkinson Disease / genetics
  • Parkinson Disease / metabolism
  • Reactive Oxygen Species / metabolism

Substances

  • Reactive Oxygen Species
  • Cyclic AMP
  • Electron Transport Complex I