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Preserved expression of fibroblast growth factor (FGF)-2 and FGF receptor 1 in brain and spinal cord of amyotrophic lateral sclerosis patients

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Abstract

Impaired trophic support of motor neurons appears to be an important pathogenic factor in amyotrophic lateral sclerosis (ALS). We investigated the mRNA expression of the pluripotent fibroblast growth factor 2 (FGF-2) and its receptors in post mortem spinal cord of ALS and control patients. FGF-2 and FGF receptor (FGFR) 1 and 2 transcripts were first studied in the spinal cord using RT-PCR. The cellular distribution of FGF-2 and FGFR mRNA in the spinal cord, motor cortex and brain stem was then assessed by in situ hybridization histochemistry. RT-PCR revealed the presence of FGF-2 and FGF receptor 1 and 2 transcripts with no obvious differences between ALS and control spinal cord. Comparing mRNA expression in the motoneuron-containing ventral horn with the clinically and neuropathologically spared dorsal horn of ALS spinal cord displayed similar expression levels. At the cellular level, we found a prominent neuronal expression of FGF-2 and FGFR1. Interestingly, both morphologically intact and damaged motoneurons showed positive staining for FGF-2 and FGFR1 transcripts. The distribution of cells expressing FGF-2 and FGFR1 transcripts showed no differences between ALS and controls. Our data suggest that FGF-2 and FGFR1 expression is preserved in the motor system in end stage ALS.

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Acknowledgments

The study was supported by a grant of the Deutsche Forschungsgemeinschaft (Pe 924/2-1) to SP.

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Authors and Affiliations

  1. Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30623, Hannover, Germany

    Susanne Petri, Klaus Krampfl & Reinhard Dengler

  2. Center for Systems Neuroscience (ZSN), Bünteweg 17, 30559, Hannover, Germany

    Susanne Petri, Klaus Krampfl, Reinhard Dengler & Claudia Grothe

  3. Department of Neuroanatomy, Hannover Medical School, Carl-Neuberg-Str. 1, 30623, Hannover, Germany

    Kerstin Kuhlemann & Claudia Grothe

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  1. Susanne Petri
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Correspondence to Susanne Petri.

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Petri, S., Krampfl, K., Kuhlemann, K. et al. Preserved expression of fibroblast growth factor (FGF)-2 and FGF receptor 1 in brain and spinal cord of amyotrophic lateral sclerosis patients. Histochem Cell Biol 131, 509–519 (2009). https://doi.org/10.1007/s00418-008-0549-x

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