Abstract
Neurodegeneration with brain iron accumulation (NBIA) is a group of devastating and life threatening rare diseases. Adult and early-onset NBIA syndromes are inherited as X-chromosomal, autosomal dominant or recessive traits and several genes have been identified as responsible for these disorders. Among the identified disease genes, only two code for proteins directly involved in iron metabolism while the remaining NBIA genes encode proteins with a wide variety of functions ranging from fatty acid metabolism and autophagy to still unknown activities. It is becoming increasingly evident that many neurodegenerative diseases are associated with metabolic dysfunction that often involves altered lipid metabolism. This is not surprising since neurons have a peculiar and heterogeneous lipid composition critical for the development and correct functioning of the nervous system. This review will focus on specific NBIA forms, namely PKAN, CoPAN, PLAN, FAHN and MPAN, which display an interesting link between neurodegeneration and alteration of phospholipids and sphingolipids metabolism, mitochondrial morphology and membrane remodelling
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Abbreviations
- 2-hFA :
-
2-hydroxylated fatty acids
- 2-nFA :
-
2-non hydroxylated fatty acids
- 2-OHOA :
-
2’-hydroxyoleic acidp
- AA :
-
arachidonic acid
- ATP :
-
Adenosine triphosphate
- C19orf12 :
-
chromosome 19 open-reading frame 12 gene
- CL :
-
cardiolipin
- CL-ox :
-
oxidized CL
- CNS :
-
central nervous system
- CoA :
-
coenzyme A
- DHA :
-
docosahexaenoic acid
- ENU :
-
N-ethyl-N-nitrosourea
- EPA :
-
eicosapentaenoic acid
- ER :
-
endoplasmic reticulum
- FA :
-
fatty acids
- GalCer :
-
galactosylceramide
- LPC :
-
lysophosphatidylcholine
- MPAN :
-
mitochondrial membrane protein-associated neurodegeneration
- MRI :
-
magnetic resonance imaging
- PC :
-
phosphatidylcholine
- PE :
-
phosphatidylethanolamine
- PKAN :
-
PANK-associated neurodegeneration with brain iron accumulation
- PL :
-
phospholipids
- PLAN :
-
PLA2G6-associated neurodegeneration with brain iron accumulation
- PNS :
-
peripheral nervous system
- PPARs :
-
peroxisome proliferator-activated receptors
- PS :
-
phosphatidylserine
- PUFA :
-
poly-unsaturated fatty acids
- ROS :
-
reactive oxygen species
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The support of Telethon GGP11088 and TIRCON project of the European Commission’s Seventh Framework Programme (FP7/2007-2013, HEALTH-F2-2011, grant agreement No. 277984) to VT are gratefully acknowledged. MA is supported by the Mitochondrial European Educational
Training, MEET, ITN MARIE CURIE PEOPLE (grant agreement No. 317433).
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Communicated by: Jean-Marie Saudubray
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Colombelli, C., Aoun, M. & Tiranti, V. Defective lipid metabolism in neurodegeneration with brain iron accumulation (NBIA) syndromes: not only a matter of iron. J Inherit Metab Dis 38, 123–136 (2015). https://doi.org/10.1007/s10545-014-9770-z
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DOI: https://doi.org/10.1007/s10545-014-9770-z