Exercise-Induced Adaptations to the Mouse Striatal Adenosine System
Adenosine acts as a key regulator of striatum activity, in part, through the antagonistic modulation of dopamine activity. Exercise can increase adenosine activity in the brain, which may impair dopaminergic functions in the striatum. Therefore, long-term repeated bouts of exercise may subsequently...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Neural Plasticity |
| Online Access: | http://dx.doi.org/10.1155/2020/5859098 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832567969063895040 |
|---|---|
| author | Ella E. Bauer Trevor J. Buhr Carter H. Reed Peter J. Clark |
| author_facet | Ella E. Bauer Trevor J. Buhr Carter H. Reed Peter J. Clark |
| author_sort | Ella E. Bauer |
| collection | DOAJ |
| description | Adenosine acts as a key regulator of striatum activity, in part, through the antagonistic modulation of dopamine activity. Exercise can increase adenosine activity in the brain, which may impair dopaminergic functions in the striatum. Therefore, long-term repeated bouts of exercise may subsequently generate plasticity in striatal adenosine systems in a manner that promotes dopaminergic activity. This study investigated the effects of long-term voluntary wheel running on adenosine 1 (A1R), adenosine 2A (A2AR), dopamine 1 (D1R), and dopamine 2 (D2R) receptor protein expression in adult mouse dorsal and ventral striatum structures using immunohistochemistry. In addition, equilibrative nucleoside transporter 1 (ENT1) protein expression was examined after wheel running, as ENT1 regulates the bidirectional flux of adenosine between intra- and extracellular space. The results suggest that eight weeks of running wheel access spared age-related increases of A1R and A2AR protein concentrations across the dorsal and ventral striatal structures. Wheel running mildly reduced ENT1 protein levels in ventral striatum subregions. Moreover, wheel running mildly increased D2R protein density within striatal subregions in the dorsal medial striatum, nucleus accumbens core, and the nucleus accumbens shell. However, D1R protein expression in the striatum was unchanged by wheel running. These data suggest that exercise promotes adaptations to striatal adenosine systems. Exercise-reduced A1R and A2AR and exercise-increased D2R protein levels may contribute to improved dopaminergic signaling in the striatum. These findings may have implications for cognitive and behavioral processes, as well as motor and psychiatric diseases that involve the striatum. |
| format | Article |
| id | doaj-art-d5ec01fd916e48c4a19047e2dc0cf6e7 |
| institution | Kabale University |
| issn | 2090-5904 1687-5443 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Neural Plasticity |
| spelling | doaj-art-d5ec01fd916e48c4a19047e2dc0cf6e72025-02-03T01:00:06ZengWileyNeural Plasticity2090-59041687-54432020-01-01202010.1155/2020/58590985859098Exercise-Induced Adaptations to the Mouse Striatal Adenosine SystemElla E. Bauer0Trevor J. Buhr1Carter H. Reed2Peter J. Clark3Department of Food Science and Human Nutrition, Iowa State University, 2302 Osborn Drive, Ames, IA 50011, USADepartment of Food Science and Human Nutrition, Iowa State University, 2302 Osborn Drive, Ames, IA 50011, USADepartment of Food Science and Human Nutrition, Iowa State University, 2302 Osborn Drive, Ames, IA 50011, USADepartment of Food Science and Human Nutrition, Iowa State University, 2302 Osborn Drive, Ames, IA 50011, USAAdenosine acts as a key regulator of striatum activity, in part, through the antagonistic modulation of dopamine activity. Exercise can increase adenosine activity in the brain, which may impair dopaminergic functions in the striatum. Therefore, long-term repeated bouts of exercise may subsequently generate plasticity in striatal adenosine systems in a manner that promotes dopaminergic activity. This study investigated the effects of long-term voluntary wheel running on adenosine 1 (A1R), adenosine 2A (A2AR), dopamine 1 (D1R), and dopamine 2 (D2R) receptor protein expression in adult mouse dorsal and ventral striatum structures using immunohistochemistry. In addition, equilibrative nucleoside transporter 1 (ENT1) protein expression was examined after wheel running, as ENT1 regulates the bidirectional flux of adenosine between intra- and extracellular space. The results suggest that eight weeks of running wheel access spared age-related increases of A1R and A2AR protein concentrations across the dorsal and ventral striatal structures. Wheel running mildly reduced ENT1 protein levels in ventral striatum subregions. Moreover, wheel running mildly increased D2R protein density within striatal subregions in the dorsal medial striatum, nucleus accumbens core, and the nucleus accumbens shell. However, D1R protein expression in the striatum was unchanged by wheel running. These data suggest that exercise promotes adaptations to striatal adenosine systems. Exercise-reduced A1R and A2AR and exercise-increased D2R protein levels may contribute to improved dopaminergic signaling in the striatum. These findings may have implications for cognitive and behavioral processes, as well as motor and psychiatric diseases that involve the striatum.http://dx.doi.org/10.1155/2020/5859098 |
| spellingShingle | Ella E. Bauer Trevor J. Buhr Carter H. Reed Peter J. Clark Exercise-Induced Adaptations to the Mouse Striatal Adenosine System Neural Plasticity |
| title | Exercise-Induced Adaptations to the Mouse Striatal Adenosine System |
| title_full | Exercise-Induced Adaptations to the Mouse Striatal Adenosine System |
| title_fullStr | Exercise-Induced Adaptations to the Mouse Striatal Adenosine System |
| title_full_unstemmed | Exercise-Induced Adaptations to the Mouse Striatal Adenosine System |
| title_short | Exercise-Induced Adaptations to the Mouse Striatal Adenosine System |
| title_sort | exercise induced adaptations to the mouse striatal adenosine system |
| url | http://dx.doi.org/10.1155/2020/5859098 |
| work_keys_str_mv | AT ellaebauer exerciseinducedadaptationstothemousestriataladenosinesystem AT trevorjbuhr exerciseinducedadaptationstothemousestriataladenosinesystem AT carterhreed exerciseinducedadaptationstothemousestriataladenosinesystem AT peterjclark exerciseinducedadaptationstothemousestriataladenosinesystem |