Well shit, this was written about in 2011 by Dr. Dale Corbett
enriched environment as talked about by Dr. Dale Corbett in 2011
How many times does the same information need to be repeated before our fucking failures of stroke associations take note and actually write up a stroke protocol on this. I bet the answer is that they never will do anything like this for survivors. Prove me wrong.
Environmental enrichment enhances synaptic plasticity by internalization of striatal dopamine transporters
- Myung-Sun Kim1,2,*
- Ji Hea Yu1,3,4,*
- Chul Hoon Kim4,5,6
- Jae Yong Choi5,7
- Jung Hwa Seo1,4
- Min-Young Lee1,2
- Chi Hoon Yi8
- Tae Hyun Choi8
- Young Hoon Ryu7
- Jong Eun Lee4,6,9
- Bae Hwan Lee4,6,10
- Hyongbum Kim5
- Sung-Rae Cho1,2,4,11⇑
- 1Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, Seoul, Korea
- 2Yonsei Stem Cell Center, Avison Biomedical Research Center, Seoul, Korea
- 3Department of Medical Science, The Graduate School, Yonsei University, Seoul, Korea
- 4Brain Korea 21 PLUS Project for Medical Science, Yonsei University, Seoul, Korea
- 5Department of Pharmacology, Yonsei University College of Medicine, Seoul, Korea
- 6Brain Research Institute, Yonsei University College of Medicine, Seoul, Korea
- 7Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul, Korea
- 8Department of Molecular Imaging, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
- 9Department of Anatomy, Yonsei University College of Medicine, Seoul, Korea
- 10Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
- 11Rehabilitation Institute of Neuromuscular Disease, Yonsei University College of Medicine, Seoul, Korea
- Sung-Rae Cho, Department and Research Institute of Rehabilitation Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Korea. Email: srcho918@yuhs.ac
-
↵* These authors contributed equally to this work
Abstract
Environmental enrichment (EE) with a
complex combination of physical, cognitive and social stimulations
enhances synaptic
plasticity and behavioral function. However, the
mechanism remains to be elucidated in detail. We aimed to investigate
dopamine-related
synaptic plasticity underlying functional
improvement after EE. For this, six-week-old CD-1 mice were randomly
allocated to
EE or standard conditions for two months. EE
significantly enhanced behavioral functions such as rotarod and ladder
walking
tests. In a [18F]FPCIT positron emission
tomography scan, binding values of striatal DAT were significantly
decreased approximately 18% in
the EE mice relative to the control mice. DAT
inhibitor administrated to establish the relationship of the DAT
down-regulation
to the treatment effects also improved rotarod
performances, suggesting that DAT inhibition recapitulated EE-mediated
treatment
benefits. Next, EE-induced internalization of DAT
was confirmed using a surface biotinylation assay. In situ
proximity ligation assay and immunoprecipitation demonstrated that EE
significantly increased the phosphorylation of striatal
DAT as well as the levels of DAT bound with protein
kinase C (PKC). In conclusion, we suggest that EE enables
phosphorylation
of striatal DAT via a PKC-mediated pathway and
causes DAT internalization. This is the first report to suggest an
EE-mediated
mechanism of synaptic plasticity by internalization
of striatal DAT.
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