ArticleJournal of neural transmission (Vienna, Austria : 1996)2013
Adult female rats' altered diurnal locomotor activity pattern following chronic methylphenidate treatment.
Article in Journal of neural transmission (Vienna, Austria : 1996), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed, 11 citations in OpenAlex.
- Methylphenidate leads to disruptions in rest/wake patterns after discontinuation.Psychopharmacology · 2026Article
- Impact of adult attention deficit hyperactivity disorder and medication status on sleep/wake behavior and molecular circadian rhythms.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019Article
- Time-shifting effects of methylphenidate on daily rhythms in the diurnal rodent Arvicanthis ansorgei.Psychopharmacology · 2018Article
- Effects of acute doses of methylphenidate on inflammation and oxidative stress in isolated hippocampus and cerebral cortex of adult rats.Journal of neural transmission (Vienna, Austria : 1996) · 2017Article
- Neuroprotective effects of various doses of topiramate against methylphenidate-induced oxidative stress and inflammation in isolated rat amygdala: the possible role of CREB/BDNF signaling pathway.Journal of neural transmission (Vienna, Austria : 1996) · 2016Article
- Acute and chronic psychostimulant treatment modulates the diurnal rhythm activity pattern of WKY female adolescent rats.Journal of neural transmission (Vienna, Austria : 1996) · 2014Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Methylphenidate (MPD) is one of the most prescribed pharmacological agents, which is also used for cognitive enhancement and recreational purposes. The objective of this study was to investigate the repetitive dose-response effects of MPD on circadian rhythm of locomotor activity pattern of female WKY rats. The hypothesis is that a change in the circadian activity pattern indicates a long-lasting effect of the drug. Four animal groups (saline control, 0.6, 2.5, and 10.0 mg/kg MPD dose groups) were housed in a sound-controlled room at 12:12 light/dark cycle. All received saline injections on experimental day 1 (ED 1). On EDs 2-7, the control group received saline injection; the other groups received 0.6, 2.5, or 10.0 mg/kg MPD, respectively. On ED 8-10, injections were withheld. On ED 11, each group received the same dose as EDs 2-7. Hourly histograms and cosine statistical analyses calculating the acrophase (ϕ), amplitude (A), and MESOR (M) were applied to assess the 24-h circadian activity pattern. The 0.6 and 2.5 mg/kg MPD groups exhibited significant (p < 0.05) change in their circadian activity pattern on ED 11. The 10.0 mg/kg MPD group exhibited tolerance on ED 11 and also a significant change in activity pattern on ED 8 compared to ED 1, consistent with withdrawal behavior (p < 0.007). In conclusion, chronic MPD administration alters circadian locomotor activity of adult female WKY rats and confirms that chronic MPD use elicits long-lasting effects.
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