Journal of Neural Transmission

, Volume 120, Issue 7, pp 1039–1052

Amphiphysin I but not dynamin I nor synaptojanin mRNA expression increased after repeated methamphetamine administration in the rat cerebrum and cerebellum

  • Mitsuko Hamamura
  • Jiro Okouchi
  • Hidetoshi Ozawa
  • Yoshihiko Kimuro
  • Akiko Iwaki
  • Yasuyuki Fukumaki
Translational Neurosciences - Original Article

DOI: 10.1007/s00702-012-0931-7

Cite this article as:
Hamamura, M., Okouchi, J., Ozawa, H. et al. J Neural Transm (2013) 120: 1039. doi:10.1007/s00702-012-0931-7

Abstract

Dopamine increases/decreases synaptic vesicle recycling and in schizophrenia the proteins/mRNA is decreased. We isolated cDNA clone, similar to amphiphysin 1 (vesicle protein) mRNA from the neocortex of rats injected repeatedly with methamphetamine using polymerase chain reaction (PCR) differential display. This clone is highly homologous to the 3′ region of the human amphiphysin gene. PCR extension study using a primer specific for the rat amphiphysin 1 gene and a primer located within the clone revealed that it is the 3′ UTR region of the rat amphiphysin 1 gene. Furthermore, in situ hybridization revealed that amphiphysin 1 mRNA is expressed in the cerebrum, medial thalamus, hippocampus and cerebellum. In the cerebellum, amphiphysin mRNA expression was confined to upper granule cell layer. Repeated methamphetamine administration increased amphiphysin I mRNA expression in both anterior part of the cerebrum, and the cerebellum. However, the repeated administration did not alter mRNA expression of the other vesicle proteins, synaptotagmin I, synapsin I, synaptojanin and dynamin I, we conclude that the repeated administration selectively increased amphiphysin 1 mRNA expression. Thus, amphiphysin 1 does not work as synaptic recycling, but it is suggested, as a part of pathogenesis of brain tissue injury (under Ca2+ and Mg2+ devoid environment) in repeated methamphetamine-injected states, the gene regulate actin-asssembly, learning, cell stress signaling and cell polarity.

Keywords

In situ hybridization 3′ UTR PCR differential display Dynamin I Synaptotagmin I 

Abbreviations

RT-PCR

Reverse transcription-polymerase chain reaction

UTR

Untranslated region

GAPDH

Glycereraldehyde-3-phosphate-dehydrogenase

Copyright information

© Springer-Verlag Wien 2012

Authors and Affiliations

  • Mitsuko Hamamura
    • 1
    • 2
  • Jiro Okouchi
    • 1
  • Hidetoshi Ozawa
    • 1
  • Yoshihiko Kimuro
    • 3
  • Akiko Iwaki
    • 1
  • Yasuyuki Fukumaki
    • 1
  1. 1.Division of Disease Genes, Institute of Genetic InformationKyushu UniversityHigashi-kuJapan
  2. 2.Graduate School of Dental Sciences, Department of Fixed ProstheticsKyushu UniversityHigashi-kuJapan
  3. 3.Institute of Systems and Information Technologies/KYUSHUSawara-kuJapan

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