ArticleNeurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology2025
Cerebrospinal-fluid Orexin-A levels in different neurocognitive disorders: a comparison study.
Article in Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology, 2025. 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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Who cites it
6 citing papers in PubMed.
- Functional Plasticity of Orexin/Hypocretin Neurons Balances Stress States.Biological psychiatry · 2026Review
- Orexin, Sleep, and Cognition in Alzheimer Disease: Non-REM Oscillatory Activity and Neural Resilience.Neurology · 2026Observational
- Sex differences in neuromodulatory subcortical systems and their implications for Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Review
- Sleep in neurodegenerative diseases: A focus on melatonin, melanin-concentrating hormone and orexin.Journal of neuroendocrinology · 2025Review
- Reevaluating orexin-a as a biomarker across dementia subtypes: clinical implications and future directions, a letter to editor.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025Article
- Potential role of Amyloid-β on the association between Orexin-A and blood-brain barrier leakage of globus pallidus in Alzheimer's disease and dementia with lewy bodies.Alzheimer's research & therapy · 2025Article
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11 authors.
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Abstract
In the present study, we investigated the differences in cerebrospinal fluid (CSF) orexin-A levels among patients with different neurocognitive disorders, such as mild or moderate to severe Alzheimer's disease (AD; mAD, msAD, respectively), behavioral variants of frontotemporal dementia (bv-FTD), non-fluent primary aphasia (NFPA), and idiopathic normal pressure hydrocephalus (iNPH). A total of 214 participants were evaluated (mAD, 45; msAD, 31; bv-FTD, 12; NFPA, 22; iNPH, 13; non-demented elderly controls, 91). The highest CSF orexin-A levels were found in iNPH patients (263.31 ± 56.89 pg/mL). Patients affected by NFPA (210.86 ± 61.99 pg/mL), iNPH, and msAD (173.04 ± 19.76 pg/mL) showed higher CSF orexin-A concentrations than controls (145.18 ± 27.01pg/mL) (p < 0.001). Bv-FTD (190.12 ± 100.84 pg/mL) and mAD (130.76 ± 21.70 pg/mL) patients showed no significant differences in CSF orexin-A levels compared with controls. mAD patients showed also lower CSF orexin-A concentrations than all other patient groups.In conclusion, orexin-A presents different CSF levels among neurocognitive disorders. The mechanisms underlying this difference vary and may include sleep-wake cycle impairment, behavioral disturbances, and CSF dynamics. The development of drugs that antagonize the orexin system could open a new frontier of research linking orexin neurotransmission to neurocognitive disorders.
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