The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
Methamphetamine‐induced, suprachiasmatic nucleus‐independent circadian rhythms of activity and mPer gene expression in the striatum of the mouse
Open accessAbstract
While the suprachiasmatic nucleus (SCN) coordinates the majority of daily rhythms, some circadian patterns of expression are controlled from outside of the SCN. These include responses to daily methamphetamine (MAP) injection, or daily restricted feeding. The mechanisms underlying these SCN-independent circadian rhythms are unknown. A circadian oscillation in the expression of mPer1 and/or mPer2, mouse period, in the SCN is considered necessary to generate an SCN-dependent circadian rhythm. Therefore, in this experiment, we examined the association between mPer gene expression and the MAP-induced, SCN-independent circadian rhythm. Acute injection of MAP caused an elevation of mPer1, mBmal1, and mNpas2 gene expression in the striatum and mPer1 in the liver. Daily MAP injection at a fixed time for 6 days shifted the rhythmic mPer1 and mPer2 expression in the striatum from a nocturnal to a diurnal rhythm, but failed to affect that in the SCN. Although lesion of the SCN 'flattened'mPer gene oscillation in the striatum and liver, daily MAP injection caused both behavioural and mPer gene expression rhythms. Daily MAP injection at variable injection intervals (12-36 h) for 6 days, however, failed to produce mPer gene rhythm in the striatum. Daily repeated MAP signals may strengthen the oscillatory force of SCN-independent circadian behavioural and molecular rhythms. The present results suggest that daily oscillation of mPer genes outside the SCN is closely associated with the regulation of SCN-independent rhythms. Thus, the present experiment highlights strongly the important role of clock gene expression, in the brain, that underlies the circadian behavioural rhythm.
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“Circadian activity rhythms in rodents can be entrained to daytime methamphetamine injections, even in SCN lesioned animals (Iijima et al., 2002).”
From Circadian genes, rhythms and the biology of mood disorders (2007) · cites this paper as Iijima et al., 2002
In the citing paper
“This treatment shifts the expression of the period genes in striatal regions typically associated with movement control, in a manner that matches the shift in activity rhythms (Iijima et al., 2002).”
From Circadian genes, rhythms and the biology of mood disorders (2007) · cites this paper as Iijima et al., 2002
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Metadata
- Authors
- Iijima, M., Nikaido, T., Akiyama, M., Moriya, T., & Shibata, S.
- Affiliations
- Waseda University (JP)
- Corresponding author
- Shibata, Shigenobu
- ORCID
- Shibata, Shigenobu
- Venue
- European Journal of Neuroscience
- Publisher
- Wiley
- Published
- 2002-09
- Volume
- 16
- Issue
- 5
- Pages
- 921-929
- ISSN
- 0953-816X (ISSN-L)
- 1460-9568
- OpenAlex
- W2000736456
- Cited by
- 122
- References
- 34
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 2 · 2023: 3 · 2022: 6 · 2021: 4 · 2020: 1 · 2019: 2 · 2018: 6 · 2017: 4 · 2016: 3 · 2015: 7 · 2014: 8 · 2013: 8 · 2012: 5
- FWCI
- 1.05
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- European Journal of Neuroscience (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministerul Cercetării, Inovării şi Digitalizării
- Topics
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- methamphetamine, suprachiasmatic nucleus, mPer1, mPer2, clock genes, striatum, circadian activity rhythm, liver, circadian gene expression, repeated dosing, circadian clock
- MeSH terms
- Central Nervous System Stimulants, Animals, Circadian Rhythm, Corpus Striatum, Gene Expression Regulation, Injections, Intraperitoneal, Liver, Locomotion, Methamphetamine, Nuclear Proteins, Suprachiasmatic Nucleus, Time Factors, Transcription Factors, In Situ Hybridization, Cell Cycle Proteins, Reverse Transcriptase Polymerase Chain Reaction, Mice, Period Circadian Proteins
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