Results 91 to 100 of about 12,344 (239)

Attention impairments and ADHD symptoms in adult narcoleptic patients with and without hypocretin deficiency. [PDF]

open access: yesPLoS ONE, 2017
Attentional complaints are common in narcolepsy patients and can overlap with daytime sleepiness features. Few studies attempted to characterize attentional domains in narcolepsy leading to controversial results.
Marco Filardi   +5 more
doaj   +1 more source

Orexin/Hypocretin: Wired for Wakefulness [PDF]

open access: yesCurrent Biology, 2003
Orexin neurons play a crucial role in regulating wakefulness and energy metabolism, but until recently, little was known about the factors that influence the activity of these essential cells. Electrophysiological studies have now identified positive and negative feedback signals that allow the orexin neurons to help maintain wakefulness.
Mochizuki, Takatoshi   +1 more
openaire   +2 more sources

Brown Adipose Tissue: Molecular Mechanisms of Regulation, Physiological Functions, and Therapeutic Targets

open access: yesMedComm, Volume 7, Issue 10, October 2026.
This review systematically covers three core dimensions of brown adipose tissue (BAT): multilayered regulatory mechanisms governing brown adipocyte differentiation and phenotypic identity, physiological functions and signaling pathways in mediating thermogenesis and systemic metabolic crosstalk between BAT and multiple organs, and emerging clinical in ...
Xiaoli Deng   +4 more
wiley   +1 more source

A role of melanin-concentrating hormone producing neurons in the central regulation of paradoxical sleep

open access: yesBMC Neuroscience, 2003
Background Peptidergic neurons containing the melanin-concentrating hormone (MCH) and the hypocretins (or orexins) are intermingled in the zona incerta, perifornical nucleus and lateral hypothalamic area. Both types of neurons have been implicated in the
Salin Paul   +9 more
doaj   +1 more source

Sleep Duration and Sun Exposure in Portuguese Children: Associations With Obesity Indicators

open access: yesAmerican Journal of Human Biology, Volume 38, Issue 9, September 2026.
Overview of the study design and main findings on the associations among sun exposure, sleep duration, and obesity indicators in Portuguese children. ABSTRACT Introduction Sleep duration, sun exposure, and obesity are important and potentially interconnected factors in child health.
Elizabete A. dos Santos   +5 more
wiley   +1 more source

The hypocretin/orexin system mediates the extinction of fear memories

open access: yes, 2014
Anxiety disorders are often associated with an inability to extinguish learned fear responses. The hypocretin/orexin system is involved in the regulation of emotional states and could also participate in the consolidation and extinction of aversive ...
COSTA, GIULIA   +5 more
core   +2 more sources

Circadian rhythms and chronotherapy in Alzheimer's disease: Mechanisms and therapeutic implications

open access: yesNeuroprotection, Volume 4, Issue 3, Page 229-247, September 2026.
Circadian dysregulation contributes to Alzheimer's disease through sleep disruption, clock‐gene dysfunction, neuroinflammation, impaired proteostasis, and metabolic imbalance. These alterations promote cognitive decline and disease progression, while circadian biomarkers and chronotherapeutic interventions offer opportunities for precision diagnosis ...
Bivek Singh   +2 more
wiley   +1 more source

Recruitment of hypothalamic orexin neurons after formalin injections in adult male rats exposed to a neonatal immune challenge

open access: yesFrontiers in Neuroscience, 2015
Exposure to early life physiological stressors, such as infection, is thought to contribute to the onset of psychopathology in adulthood. In animal models, injections of the bacterial immune challenge, lipopolysaccharide (LPS), during the neonatal period
Erin Jane Campbell   +4 more
doaj   +1 more source

Assessing mortality risk in narcolepsy: Evidence from population studies

open access: yesPsychiatry and Clinical Neurosciences Reports, Volume 5, Issue 3, September 2026.
Abstract Narcolepsy is a chronic neurologic sleep disorder associated with excessive daytime sleepiness, cataplexy, and a higher prevalence of cardiovascular and psychiatric comorbidities. While these factors may predispose individuals to adverse events, observational studies evaluating mortality in narcolepsy have yielded inconsistent results.
Nawris Alhassan   +2 more
wiley   +1 more source

Inclusion of hypocretin-1 improved performance of poor sleep quality prediction for elderly patients with acute ischemic stroke: a prospective cohort study

open access: yesFrontiers in Aging Neuroscience
BackgroundHypocretin-1 is a vital neurotransmitter in regulating the sleep–wake cycle and provides neuroprotection against cerebral ischemia. We aims to develop a poor sleep quality predictive model for elderly population with acute ischemic stroke ...
Ting Fu   +7 more
doaj   +1 more source

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