Difference between revisions of "Hein 2008 Hum Mol Genet"
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{{Publication | {{Publication | ||
|title=Hein S, Schönfeld P, Kahlert S, Reiser G (2008) Toxic effects of X-linked adrenoleukodystrophy-associated, very long chain fatty acids on glial cells and neurons from rat hippocampus in culture. Hum | |title=Hein S, Schönfeld P, Kahlert S, Reiser G (2008) Toxic effects of X-linked adrenoleukodystrophy-associated, very long chain fatty acids on glial cells and neurons from rat hippocampus in culture. Hum Mol Genet 17:1750-61. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/18344355 PMID: 18344355 Open Access] | |||
|authors=Hein S, Schoenfeld P, Kahlert S, Reiser G | |authors=Hein S, Schoenfeld P, Kahlert S, Reiser G | ||
|year=2008 | |year=2008 | ||
|journal=Hum | |journal=Hum Mol Genet | ||
|abstract=Saturated very long chain fatty acids (VLCFAs; ≥C22:0) accumulate in X-linked adrenoleukodystrophy (X-ALD, OMIM 300100), a severe hereditary neurodegenerative disease, due to peroxisomal impairment. Previous studies analysed the development of X-ALD in humans and gene knockout animal models. However, the toxic effect of VLCFA leading to severe symptoms with progressive and multifocal demyelination, adrenal insufficiency and inflammation still remains unclear. To understand the toxic effects of VLCFA in the brain, here we exposed neural cells to VLCFA and analysed the cellular consequences. We found that oligodendrocytes and astrocytes challenged with docosanoic- (C22:0), tetracosanoic- (C24:0) and hexacosanoic acids (C24:0) die within 24 h. VLCFA-induced depolarization of mitochondria ''in situ'' and increased intracellular Ca<sup>2+</sup> level in all three brain cell types provides indications about the mechanism of toxicity of VLCFA. Interestingly, VLCFAs affect to the largest degree the myelin-producing oligodendrocytes. In isolated mitochondria, VLCFAs exert a detrimental effect by affecting the inner mitochondrial membrane and promoting the permeability transition. In conclusion, we suggest that there is a potent toxic activity of VLCFA due to dramatic cell physiological effects with mitochondrial dysfunction and Ca<sup>2+</sup> deregulation. This provides the first evidence for mitochondrial-based cell death mechanisms in neurodegenerative disease with peroxisomal defects and subsequent VLCFA accumulation. | |abstract=Saturated very long chain fatty acids (VLCFAs; ≥C22:0) accumulate in X-linked adrenoleukodystrophy (X-ALD, OMIM 300100), a severe hereditary neurodegenerative disease, due to peroxisomal impairment. Previous studies analysed the development of X-ALD in humans and gene knockout animal models. However, the toxic effect of VLCFA leading to severe symptoms with progressive and multifocal demyelination, adrenal insufficiency and inflammation still remains unclear. To understand the toxic effects of VLCFA in the brain, here we exposed neural cells to VLCFA and analysed the cellular consequences. We found that oligodendrocytes and astrocytes challenged with docosanoic- (C22:0), tetracosanoic- (C24:0) and hexacosanoic acids (C24:0) die within 24 h. VLCFA-induced depolarization of mitochondria ''in situ'' and increased intracellular Ca<sup>2+</sup> level in all three brain cell types provides indications about the mechanism of toxicity of VLCFA. Interestingly, VLCFAs affect to the largest degree the myelin-producing oligodendrocytes. In isolated mitochondria, VLCFAs exert a detrimental effect by affecting the inner mitochondrial membrane and promoting the permeability transition. In conclusion, we suggest that there is a potent toxic activity of VLCFA due to dramatic cell physiological effects with mitochondrial dysfunction and Ca<sup>2+</sup> deregulation. This provides the first evidence for mitochondrial-based cell death mechanisms in neurodegenerative disease with peroxisomal defects and subsequent VLCFA accumulation. | ||
| | |mipnetlab=DE Magdeburg Schoenfeld P | ||
|discipline=Biomedicine | |||
}} | }} | ||
{{Labeling | {{Labeling | ||
|injuries=Mitochondrial disease | |||
|injuries=Mitochondrial | |||
|organism=Rat | |organism=Rat | ||
|tissues= | |tissues=Nervous system | ||
|preparations=Isolated | |preparations=Isolated mitochondria | ||
|topics= | |topics=Fatty acid | ||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
|discipline=Biomedicine | |||
}} | }} | ||
Latest revision as of 11:04, 27 March 2018
| Hein S, Schönfeld P, Kahlert S, Reiser G (2008) Toxic effects of X-linked adrenoleukodystrophy-associated, very long chain fatty acids on glial cells and neurons from rat hippocampus in culture. Hum Mol Genet 17:1750-61. |
Hein S, Schoenfeld P, Kahlert S, Reiser G (2008) Hum Mol Genet
Abstract: Saturated very long chain fatty acids (VLCFAs; ≥C22:0) accumulate in X-linked adrenoleukodystrophy (X-ALD, OMIM 300100), a severe hereditary neurodegenerative disease, due to peroxisomal impairment. Previous studies analysed the development of X-ALD in humans and gene knockout animal models. However, the toxic effect of VLCFA leading to severe symptoms with progressive and multifocal demyelination, adrenal insufficiency and inflammation still remains unclear. To understand the toxic effects of VLCFA in the brain, here we exposed neural cells to VLCFA and analysed the cellular consequences. We found that oligodendrocytes and astrocytes challenged with docosanoic- (C22:0), tetracosanoic- (C24:0) and hexacosanoic acids (C24:0) die within 24 h. VLCFA-induced depolarization of mitochondria in situ and increased intracellular Ca2+ level in all three brain cell types provides indications about the mechanism of toxicity of VLCFA. Interestingly, VLCFAs affect to the largest degree the myelin-producing oligodendrocytes. In isolated mitochondria, VLCFAs exert a detrimental effect by affecting the inner mitochondrial membrane and promoting the permeability transition. In conclusion, we suggest that there is a potent toxic activity of VLCFA due to dramatic cell physiological effects with mitochondrial dysfunction and Ca2+ deregulation. This provides the first evidence for mitochondrial-based cell death mechanisms in neurodegenerative disease with peroxisomal defects and subsequent VLCFA accumulation.
• O2k-Network Lab: DE Magdeburg Schoenfeld P
Labels:
Stress:Mitochondrial disease Organism: Rat Tissue;cell: Nervous system Preparation: Isolated mitochondria
Regulation: Fatty acid
HRR: Oxygraph-2k
