Cited by 57Lipid metabolism and biosynthesisMetabolism and Genetic DisordersCellular transport and secretion

Impaired neurotransmission in ether lipid-deficient nerve terminals

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Brodde, Alexander, Teigler, Andre, Brugger, Britta, Lehmann, Wolf D., Wieland, Felix, Berger, Johannes, Just, Wilhelm W.·2012·Human Molecular Genetics

Abstract

Isolated defects of ether lipid (EL) biosynthesis in humans cause rhizomelic chondrodysplasia punctata type 2 and type 3, serious peroxisomal disorders. Using a previously described mouse model [Rodemer, C., Thai, T.P., Brugger, B., Kaercher, T., Werner, H., Nave, K.A., Wieland, F., Gorgas, K., and Just, W.W. (2003) Inactivation of ether lipid biosynthesis causes male infertility, defects in eye development and optic nerve hypoplasia in mice. Hum. Mol. Genet., 12, 1881-1895], we investigated the effect of EL deficiency in isolated murine nerve terminals (synaptosomes) on the pre-synaptic release of the neurotransmitters (NTs) glutamate and acetylcholine. Both Ca(2+)-dependent exocytosis and Ca(2+)-independent efflux of the transmitters were affected. EL-deficient synaptosomes respire at a reduced rate and exhibit a lowered adenosin-5'-triphosphate/adenosine diphosphate (ATP/ADP) ratio. Consequently, ATP-driven processes, such as synaptic vesicle cycling and maintenance of Na(+), K(+) and Ca(2+) homeostasis, might be disturbed. Analyzing reactive oxygen species in EL-deficient neural and non-neural tissues revealed that plasmalogens (PLs), the most abundant EL species in mammalian central nervous system, considerably contribute to the generation of the lipid peroxidation product malondialdehyde. Although EL-deficient tissue contains less lipid peroxidation products, fibroblasts lacking ELs are more susceptible to induced oxidative stress. In summary, these results suggest that due to the reduced energy state of EL-deficient tissue, the Ca(2+)-independent efflux of NTs increases while the Ca(2+)-dependent release declines. Furthermore, lack of PLs is mainly compensated for by an increase in the concentration of phosphatidylethanolamine and results in a significantly lowered level of lipid peroxidation products in the brain cortex and cerebellum.

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Crossref · 10.1093/hmg/dds097

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  • Synaptosomes from cortex of Gnpat KO mice show decreased calcium-dependent release of glutamate and acetylcholine.

    “Studies in synaptosomes isolated from cortex, mimicking the process of synaptic transmission, have revealed a decrease in calcium-dependent release of the neurotransmitters glutamate and acetylcholine in Gnpat KO mice [40].”

    From Peroxisomes in brain development and function (2016) · cites this paper as [40]

  • The idea that plasmalogen-deficient myelin is more prone to oxidative damage is weakened by reduced malondialdehyde and no substantial change in other oxidative stress markers in ether lipid-deficient mouse brains.

    “Plasmalogen-deficient myelin might be more prone to oxidative damage [231]; however, this idea is weakened by the observations of reduced rather than elevated levels of malondialdehyde and no substantial change in other oxidative stress markers in the brains of ether lipid-deficient mice [40,73].”

    From Peroxisomes in brain development and function (2016) · cites this paper as [40]

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Authors
Brodde, A., Teigler, A., Brugger, B., Lehmann, W. D., Wieland, F., Berger, J., & Just, W. W.
Affiliations
  • Heidelberg University (DE)
  • German Cancer Research Center (DE)
  • Medical University of Vienna (AT)
Corresponding author
Just, Wilhelm W.
Venue
Human Molecular Genetics
Published
2012-03-08
Volume
21
Issue
12
Pages
2713-2724
ISSN
  • 0964-6906 (ISSN-L)
  • 1460-2083
OpenAlex
W2158944859
Cited by
57
References
79
Citations by year
2026: 1 · 2025: 5 · 2024: 4 · 2023: 3 · 2022: 7 · 2021: 4 · 2020: 6 · 2019: 7 · 2018: 3 · 2017: 6 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 3 · 2012: 2
FWCI
1.37
Type
journal article
Language
en
Open access
Locations
  • Human Molecular Genetics (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Metabolism and Genetic Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
rhizomelic chondrodysplasia punctata, synaptosomes, neurotransmitter release, glutamate, acetylcholine, plasmalogens, lipid peroxidation, malondialdehyde, reactive oxygen species, oxidative stress, ATP/ADP ratio, synaptic vesicle recycling, ion homeostasis, phosphatidylethanolamine, peroxisomal disorders, mouse model
MeSH terms
Acetylcholine, Acyltransferases, Adenosine Diphosphate, Adenosine Triphosphate, Animals, Brain, Calcium, Cerebellum, Exocytosis, Humans, Malondialdehyde, Synaptic Transmission, Phosphatidylethanolamines, Plasmalogens, Synaptic Vesicles, Synaptosomes, Lipid Peroxidation, Presynaptic Terminals, Mice, Knockout, Oxidative Stress, Glutamic Acid, Chondrodysplasia Punctata, Rhizomelic, Oligonucleotide Array Sequence Analysis, Gene Expression Profiling, Mice

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