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Related Concept Videos

Management of Insomnia01:19

Management of Insomnia

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The sleep cycle, an integral part of human health, consists of several stages with distinct characteristics and functions. It begins with a transition from wakefulness to sleep, known as the light sleep phase, followed by the restorative deep sleep phase, essential for physical recovery and growth. The cycle concludes with the Rapid Eye Movement (REM) phase, characterized by high brain activity and vivid dreaming. Insomnia, a prevalent sleep disorder, involves difficulty falling asleep, staying...
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Sedatives and Hypnotics Drugs: Miscellaneous Agents01:17

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Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
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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
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Narcolepsy01:07

Narcolepsy

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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.
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REM Sleep Behavior Disorder01:15

REM Sleep Behavior Disorder

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REM Sleep Behavior Disorder (RBD) is a sleep disorder characterized by the absence of muscle paralysis that normally occurs during the REM phase of sleep. This absence allows individuals to physically act out their dreams, which are often vivid and disturbing. Common behaviors exhibited during episodes include kicking, punching, and yelling. These actions can be dangerous, potentially leading to injuries for the person with RBD or their bed partner.
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Insomnia01:27

Insomnia

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Insomnia is a prevalent sleep disorder characterized by difficulty falling asleep, frequent awakenings during the night, and waking up too early without being able to return to sleep. People with insomnia often experience these disruptions at least three nights a week for at least one month. Chronic insomnia, which lasts for at least three months, can lead to increased anxiety, which in turn can worsen sleep difficulties, creating a cycle of sleeplessness and stress.
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Author Spotlight: Overcoming Challenges in Drosophila Sleep Measurement Using DAM System
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Melatonin in sleep disorders.

J J Poza1, M Pujol2, J J Ortega-Albás3

  • 1Servicio de Neurología, Hospital Universitario Donostia, San Sebastián, Spain.

Neurologia
|September 5, 2022
PubMed
Summary
This summary is machine-generated.

Melatonin, a hormone regulating sleep-wake cycles, is explored for insomnia treatment. Despite theoretical benefits for age-related melatonin deficits, scientific evidence supporting its efficacy as a substitutive therapy remains limited.

Keywords:
Circadian rhythmCircadian rhythm sleep disordersComorbid insomniaInsomnio comórbidoInsomnio primarioMelatoninMelatoninaPrimary insomniaRitmo circadianoTrastorno de fase de sueño

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Sleep Medicine

Background:

  • Melatonin is the primary hormone regulating the human sleep-wake cycle.
  • Decreased melatonin production with age correlates with increased sleep disturbances, suggesting a potential link to sleep disorders.
  • Oral administration of melatonin is feasible, prompting interest in its therapeutic potential for insomnia.

Purpose of the Study:

  • To review the physiological role of melatonin.
  • To examine various pharmaceutical preparations of melatonin.
  • To evaluate the existing clinical evidence for melatonin's effectiveness in treating insomnia.

Main Methods:

  • Literature review of physiological studies on melatonin.
  • Analysis of different melatonin formulations.
  • Synthesis of clinical trial data on melatonin for insomnia.

Main Results:

  • Melatonin's role in circadian rhythm regulation is well-established.
  • Limited robust scientific evidence currently supports the efficacy of melatonin as a substitutive therapy for insomnia.
  • Optimal dosage and pharmaceutical forms for melatonin administration require further definition.

Conclusions:

  • While theoretically promising for age-related sleep issues, melatonin therapy for insomnia lacks substantial clinical validation.
  • Further research is needed to establish clear guidelines for melatonin's therapeutic use, including optimal dosing and formulations.
  • The current understanding suggests a need for more rigorous studies before widespread adoption of melatonin for sleep disorders.