Multiple unit activity during habituation, sleep-wakefulness cycle and the effect of ACTH and corticosteroid treatment☆
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Glucocorticoids, metabolism and brain activity
2021, Neuroscience and Biobehavioral ReviewsCitation Excerpt :Similarly, effects induced by peripheral tratements with corticosterone, cortisol and dexamethasone (Table 5) were usually reported for the first or second hour and in some cases an available description is not sufficent to precisely determine the total duration of recording in groups of interest. Although some researchers performed prolonged recordings (Phillips and Dafny, 1971) or used longer delays such as 3 h (Hesen and Joels, 1996) or 24 h (Koranyi et al., 1971b), the data are scarce and there is no systematic comparison of short-term non genomic effects and delayed genomic effects on neuronal firing especially after the first 2 h. This is important because a number of transcriptomic, proteomic and metabolic processes develop over the course of several hours after treatment (see Section 6 for more details).
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2020, Neuroscience and Biobehavioral ReviewsCitation Excerpt :Specifically, in these subjects NREM sleep decreased whereas sleep latency and wakefulness increased during the first third of the night (Steiger et al., 1991). In intact cats, ACTH infusions suppressed REM sleep (Koranyi et al., 1971) and, in rats, it significantly increased sleep latency and wake time while decreasing NREM sleep time (Tsutsui et al., 2015). Since sleep disturbances in depressive patients are characterized by an increase in sleep latency and a decrease in NREM sleep time (Holshoe, 2009), it has been proposed that chronic administration of ACTH in rats might represent a valid animal model for human depression (Tsutsui et al., 2015) (Table 2).
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This work was partially supported by a Grant from the Ford Foundation. Steroids were kindly supplied by Syntex de México.
- 3
Mailing Address: Institute of Physiology, University Medical School, Rákóczi ut 80., Pécs, Hungary.
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IBRO/UNESCO Fellow on sabbatical leave from the University Medical School of Pécs.