Results 81 to 90 of about 51,369 (198)

The relationship between sleep disorders and testosterone in men

open access: yesAsian Journal of Andrology, 2014
Plasma testosterone levels display circadian variation, peaking during sleep, and reaching a nadir in the late afternoon, with a superimposed ultradian rhythm with pulses every 90 min reflecting the underlying rhythm of pulsatile luteinizing hormone (LH)
Gary Wittert
doaj   +1 more source

Management of rapid eye movement sleep behavior disorder in patients with Parkinson's disease [PDF]

open access: yes, 2016
Among all of the devastating effects that Parkinson’s disease (PD) has on an individual, sleep dysfunction is one that can have a profound effect on the entire family of the patient. The most potentially destructive of these sleep syndromes being that of
Jeffries, Michael
core   +1 more source

The Recent History of Seasonal Affective Disorder (SAD) [PDF]

open access: yes, 2014
Seminar TranscriptPsychiatric diagnosis is controversial and is regarded by some principally as a means of reinforcing the vested interests of medical professionals and pharmaceutical companies.
Overy, C, Tansey, EM
core  

Sleep and aging

open access: yesSleep Science and Practice, 2018
This review describes normal and disordered sleep in the older adult population. Although several distinctive sleep changes across the lifespan are normative, including changes in the amount of time spent in different stages of sleep and a shift in the ...
Caroline J. Lavoie   +2 more
doaj   +1 more source

Use of melatonin for sleep and circadian rhythm disorders

open access: yesAnnals of Medicine, 1998
Although not licensed as a drug, melatonin is widely sold as a nutritional supplement in the USA for its purported sleep-promoting and antiageing properties. In this article, we provide some guidelines for its use in sleep disorders medicine. In brief, melatonin appears to promote sleep by producing corrective circadian phase shifts, thereby improving ...
Alfred J. Lewy   +2 more
openaire   +3 more sources

Therapeutic potential of ginsenosides in circadian rhythm-based skin disorders

open access: yesJournal of Ginseng Research
The circadian rhythm, a biological system all living organisms possess, has become increasingly important as sleep patterns become more irregular. Circadian rhythms affect various cell types (fibroblasts, fat cells, muscles, etc.) and organs (the liver ...
Heejun Ha   +8 more
doaj  

Circadian Rhythms in the CNS and Peripheral Clock Disorders: Human Sleep Disorders and Clock Genes

open access: yesJournal of Pharmacological Sciences, 2007
Genetic analyses of circadian rhythm sleep disorders (CRSD), such as familial advanced sleep phase syndrome (ASPS) and delayed sleep phase syndrome (DSPS), and morningness-eveningness revealed the relationship between variations in clock genes and ...
Takashi Ebisawa
doaj  

Long Days Enhance Recognition Memory and Increase Insulin-like Growth Factor 2 in the Hippocampus [PDF]

open access: yes, 2017
Light improves cognitive function in humans; however, the neurobiological mechanisms underlying positive effects of light remain unclear. One obstacle is that most rodent models have employed lighting conditions that cause cognitive deficits rather than ...
Baker, Kimberly   +10 more
core   +1 more source

Diabetes Alters Diurnal Rhythm of Electroretinogram in db/db Mice [PDF]

open access: yes, 2019
Diabetic retinopathy (DR) is the most common complications of diabetes and a leading cause of blindness in the United States. The retinal neuronal changes precede the vascular dysfunction observed in DR.
Bhatwadekara, Ashay D.   +3 more
core  

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