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Arjmandi-rad S, Zarrindast MR, Shadfar S, Nasehi M. The role of sleep deprivation in streptozotocin-induced Alzheimer’s disease-like sporadic dementia in rats with respect to the serum level of oxidative and inflammatory markers. Exp Brain Res 2022; 240:3259-3270. [DOI: 10.1007/s00221-022-06471-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 09/22/2022] [Indexed: 11/04/2022]
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Cui SY, Song JZ, Cui XY, Hu X, Ma YN, Shi YT, Luo Y, Ge YR, Ding H, Ye H, Zhang YH. Intracerebroventricular streptozotocin-induced Alzheimer's disease-like sleep disorders in rats: Role of the GABAergic system in the parabrachial complex. CNS Neurosci Ther 2018; 24:1241-1252. [PMID: 30014576 DOI: 10.1111/cns.13032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 01/08/2023] Open
Abstract
AIM Sleep disorders are common in Alzheimer's disease (AD) and assumed to directly influence cognitive function and disease progression. This study evaluated sleep characteristics in a rat model of AD that was induced by intracerebroventricular streptozotocin (STZ) administration and assessed the possible underlying mechanisms. METHODS Cognition ability was assessed in the Morris water maze in rats. Sleep parameters were analyzed by electroencephalographic and electromyographic recordings. Neuronal activity in brain areas that regulate sleep-wake states was evaluated by double-staining immunohistochemistry. High-performance liquid chromatography with electrochemical detection was used to detect neurotransmitter levels. RESULTS Fourteen days after the STZ injection, the rats exhibited sleep disorders that were similar to those in AD patients, reflected by a significant increase in wakefulness and decreases in nonrapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. The c-Fos expression analysis indicated that neuronal activity and the number of neurons in the dorsal raphe nucleus and locus coeruleus decreased in STZ-injected rats. In the ventrolateral preoptic nucleus (VLPO), the activity of γ-aminobutyric acid (GABA) neurons was suppressed. In the arousal-driving parabrachial nucleus (PBN), GABAergic activity was suppressed, whereas glutamatergic activity was promoted. The neurotransmitter analysis revealed a reduction in GABA in the VLPO and PBN and elevation of glutamate in the PBN. A direct injection of the GABAA receptor antagonist bicuculline in the PBN in normal rats induced a similar pattern of sleep disorder as in STZ-injected rats. A microinjection of GABA in the PBN improved sleep disorders that were induced by STZ. CONCLUSION These results suggest that the reduction in GABAergic inhibition in the PBN and VLPO may be involved in sleep disorders that are induced by STZ. Our novel findings encourage further studies that investigate mechanisms of sleep regulation in sporadic AD.
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Affiliation(s)
- Su-Ying Cui
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Jin-Zhi Song
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Xiang-Yu Cui
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Xiao Hu
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Yu-Nu Ma
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Yu-Tong Shi
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Ying Luo
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Yan-Ru Ge
- School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Hui Ding
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Hui Ye
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
| | - Yong-He Zhang
- Department of Pharmacology, Peking University, School of Basic Medical Science, Beijing, China
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Sil’kis IG. A Neurochemical Approach to the Search for Drugs for the Treatment of Symptoms of Alzheimer’s Disease. NEUROCHEM J+ 2018. [DOI: 10.1134/s1819712418010130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Hypersomnia is a common complaint in many patients with neurodegenerative diseases and a major cause of decreased quality of life. This article discusses the prevalence and factors associated with hypersomnia in patients with a variety of neurodegenerative diseases affecting the central nervous system, including tauopathies, synucleinopathies, and other conditions. Common nocturnal sleep problems that may result in daytime hypersomnia are delineated. A clinical approach to hypersomnia in patients with neurodegenerative diseases, recommended diagnostic testing, and available treatment options are also discussed.
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Affiliation(s)
- Sushanth Bhat
- Division of Sleep Medicine, Department of Neuroscience, JFK Neuroscience Institute, Seton Hall University, 65 James Street, Edison, NJ 08818, USA.
| | - Sudhansu Chokroverty
- Division of Sleep Medicine, Department of Neuroscience, JFK Neuroscience Institute, Seton Hall University, 65 James Street, Edison, NJ 08818, USA
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Silkis IG. Hypothetical neurochemical mechanisms of paradoxical sleep deficiency in Alzheimer’s disease. NEUROCHEM J+ 2017. [DOI: 10.1134/s181971241702012x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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