Related Experiment Video
Updated: Apr 19, 2026
10:39
3D-Neuronavigation In Vivo Through a Patient's Brain During a Spontaneous Migraine Headache
Published on: June 2, 2014
18.9K
Reduced CSF hypocretin-1 levels are associated with cluster headache
Mads Barloese1, Poul Jennum2, Nunu Lund1
1Danish Headache Center, Dept. of Neurology, Glostrup Hospital, University of Copenhagen, Denmark.
Cephalalgia : an International Journal of Headache
|December 11, 2014
Summary
Cluster headache patients have significantly lower hypocretin-1 (HCRT-1) levels. This finding suggests a link between HCRT-1 deficiency and the neurological disorder, potentially impacting arousal regulation.
Area of Science:
- Neurology
- Neuroscience
- Sleep Medicine
Background:
- Cluster headache (CH) is a severe neurological disorder with distinct chronobiological patterns.
- Genetic links suggest involvement of the hypocretin (HCRT) system in CH.
- Autonomic symptoms and sleep disturbances are characteristic of CH attacks.
Purpose of the Study:
- To investigate hypocretin-1 (HCRT-1) levels in patients with cluster headache.
- To explore the potential relationship between HCRT-1 and CH pathophysiology.
Main Methods:
- Cerebrospinal fluid (CSF) HCRT-1 concentration was measured.
- 12 chronic CH, 14 episodic CH patients, and 27 healthy controls were included.
- Clinical features were compared with HCRT-1 levels.
Main Results:
- Significantly lower HCRT-1 levels were observed in both chronic and episodic CH patients compared to controls.
- p-values: 0.0221 for chronic CH, 0.0005 for episodic CH.
- No significant correlation was found between HCRT-1 levels and other clinical features.
Conclusions:
- This study is the first to report reduced HCRT concentrations in CH patients.
- Decreased HCRT may indicate insufficient hypothalamic antinociceptive activity.
- Findings support a connection between arousal regulation and cluster headache.
More Related Videos
Related Concept Videos
01:14Increased Intracranial Pressure l: Introduction
1
Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component...
1
01:29Increased Intracranial Pressure ll: Pathophysiology
2
Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins...
2
01:24Sleep-Wake Cycles
3.5K
Sleep is an essential physiological process vital to maintaining overall well-being. The reticular activating system (RAS), a network of neurons in the brainstem, regulates wakefulness and sleep. While it may seem passive, sleep consists of distinct cycles, each with its unique characteristics and functions. Two key sleep phases are non-rapid eye movement (NREM) and rapid eye movement (REM).
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
NREM Sleep
NREM sleep comprises four progressive stages that seamlessly merge:
3.5K
01:19Cushing Syndrome II: Pathophysiology
1
Cortisol production is normally governed by the hypothalamic–pituitary–adrenal (HPA) axis, which maintains hormonal balance through tightly regulated feedback mechanisms. Disruption of this regulatory system is central to the development of Cushing syndrome, whether the excess cortisol originates from external medications or internal pathology. Persistent cortisol elevation alters metabolism, immune function, and endocrine signaling, producing the characteristic clinical features...
1
01:07Narcolepsy
841
Narcolepsy is a chronic sleep disorder characterized by pervasive, uncontrolled sleepiness and other sleep disturbances. One of its hallmark symptoms is an abrupt transition to REM sleep upon falling asleep, which causes symptoms typically associated with this phase to occur unexpectedly during wakefulness. These include the following symptoms, which typically last from a minute or two to half an hour.
841