Restoration of sleep–wake behavior following short photoperiod exposure in ventral subicular lesioned male Wistar rats: A 24-h sleep–wake electroencephalographical study

IF 2.9 3区 医学 Q2 NEUROSCIENCES Journal of Neuroscience Research Pub Date : 2024-07-13 DOI:10.1002/jnr.25367
Neethi Prem, Arun Sasidharan, Bettadapura N. Srikumar, Byrathnahalli S. Shankaranarayana Rao, Bindu M. Kutty
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Abstract

The ventral subiculum regulates emotion, stress responses, and spatial and social cognition. In our previous studies, we have demonstrated anxiety- and depression-like symptoms, deficits in spatial and social cognition in ventral subicular lesioned (VSL) rats, and restoration of affective and cognitive behaviors following photoperiod manipulation (short photoperiod regime, SPR; 6:18 LD cycle). In the present study, we have studied the impact of VSL on sleep–wake behavioral patterns and the effect of SPR on sleep–wakefulness behavior. Adult male Wistar rats subjected to VSL demonstrated decreased wake duration and enhanced total sleep time due to increased non-rapid eye movement sleep (NREMS) and rapid eye movement sleep (REMS). Power spectral analysis indicated increased delta activity during NREMS and decreased sigma band power during all vigilance states. Light is one of the strongest entrainers of the circadian rhythm, and its manipulation may have various physiological and functional consequences. We investigated the effect of 21-day exposure to SPR on sleep–wakefulness (S–W) behavior in VSL rats. We observed that SPR exposure restored S–W behavior in VSL rats, resulting in an increase in wake duration and a significant increase in theta power during wake and REMS. This study highlights the crucial role of the ventral subiculum in maintaining normal sleep–wakefulness patterns and highlights the effectiveness of photoperiod manipulation as a non-pharmacological treatment for reversing sleep disturbances reported in mood and neuropsychiatric disorders like Alzheimer's disease, bipolar disorder, and major depressive disorder, which also involve alterations in circadian rhythm.

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短光周期照射后雄性 Wistar 大鼠腹侧线粒体病变后睡眠-觉醒行为的恢复:24小时睡眠-觉醒脑电图研究
腹腔底调节情绪、应激反应以及空间和社会认知。在之前的研究中,我们已经证实了腹侧子网膜病变(VSL)大鼠的焦虑和抑郁症状、空间和社会认知障碍,以及光周期操作(短光周期制度,SPR;6:18 LD周期)后情感和认知行为的恢复。在本研究中,我们研究了 VSL 对睡眠-觉醒行为模式的影响以及 SPR 对睡眠-觉醒行为的影响。接受 VSL 的成年雄性 Wistar 大鼠表现出觉醒持续时间减少,总睡眠时间增加,原因是非快速眼动睡眠(NREMS)和快速眼动睡眠(REMS)增加。功率谱分析显示,在非快速眼动睡眠(NREMS)期间,delta 活动增加,而在所有警觉状态期间,sigma 波段功率下降。光是昼夜节律最强的诱导因素之一,对它的控制可能会产生各种生理和功能后果。我们研究了暴露于 SPR 21 天对 VSL 大鼠睡眠-觉醒(S-W)行为的影响。我们观察到,暴露于 SPR 后,VSL 大鼠的 S-W 行为得到恢复,唤醒持续时间延长,唤醒和快速动眼期的θ功率显著增加。这项研究强调了腹侧子网在维持正常睡眠-觉醒模式中的关键作用,并突出了光周期调节作为一种非药物治疗方法在逆转阿尔茨海默病、双相情感障碍和重度抑郁症等情绪和神经精神疾病中的睡眠障碍方面的有效性,这些疾病也涉及昼夜节律的改变。
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来源期刊
Journal of Neuroscience Research
Journal of Neuroscience Research 医学-神经科学
CiteScore
9.50
自引率
2.40%
发文量
145
审稿时长
1 months
期刊介绍: The Journal of Neuroscience Research (JNR) publishes novel research results that will advance our understanding of the development, function and pathophysiology of the nervous system, using molecular, cellular, systems, and translational approaches. JNR covers both basic research and clinical aspects of neurology, neuropathology, psychiatry or psychology. The journal focuses on uncovering the intricacies of brain structure and function. Research published in JNR covers all species from invertebrates to humans, and the reports inform the readers about the function and organization of the nervous system, with emphasis on how disease modifies the function and organization.
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