Norwegian
Albanian
Arabic
Armenian
Azerbaijani
Belarusian
Bengali
Bosnian
Catalan
Czech
Danish
Deutsch
Dutch
English
Estonian
Finnish
Français
Greek
Haitian Creole
Hebrew
Hindi
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Korean
Latvian
Lithuanian
Macedonian
Mongolian
Norwegian
Persian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Slovenian
Spanish
Swahili
Swedish
Turkish
Ukrainian
Vietnamese
Български
中文(简体)
中文(繁體)
Neurochemistry International 2011-Jan

Hypobaric hypoxia modulates brain biogenic amines and disturbs sleep architecture.

Bare registrerte brukere kan oversette artikler
Logg inn Registrer deg
Koblingen er lagret på utklippstavlen
Koushik Ray
Arkadeb Dutta
Usha Panjwani
Lalan Thakur
J P Anand
Sanjeev Kumar

Nøkkelord

Abstrakt

Sojourners to high altitude experience poor-quality of sleep due to hypobaric hypoxia (HH). Brain neurotransmitters are the key regulators of sleep wakefulness. Scientific literature has limited information on the role of brain neurotransmitters involved in sleep disturbance in HH. The present study aimed to investigate the time dependent changes in neurotransmitter levels and enzymes involved in the biosynthesis of brain neurotransmitters in frontal cortex, brain stem, cerebellum, pons and medulla and the effect of these alterations on sleep architecture in HH. Thirty adult Sprague-Dawley rats, body weight of 230-250 g were exposed to simulated altitude ∼7620 m, 282 mm Hg, partial pressure of O(2) 59 mm Hg for 7 and 14 days continuously in an animal decompression chamber. After 7 and 14 days of HH, brain nor-epinephrine and dopamine levels were significantly increased in frontal cortex, brain stem, cerebellum and pons and medulla whereas serotonin level was significantly reduced in frontal cortex and pons and medulla after 14 days of HH. Tyrosine hydroxylase level in locus coeruleus (LC) was significantly increased whereas Choline Acetyl Transferase and Glutamic Acid Decarboxylase (GAD) levels were significantly reduced in laterodorsal-tegmentum and pedunculopontine-tegmentum after 7 days of HH. GAD was also reduced in LC after 7 days HH. Alteration in these neurotransmitters and enzyme levels was accompanied with reduction in quality and quantity of sleep. There was a significant increase in sleep latency, rapid eye movement (REM) latency, duration of active awake, quiet awake, quiet sleep and a significant decrease in duration of REM sleep and deep sleep on day 7 and 14 of HH. It was concluded that HH alters the expression of enzymes linked to sleep neurotransmitter synthesis pathway and subsequent loss of homeostasis at neurotransmitter level disrupts the sleep pattern in hypobaric hypoxia.

Bli med på
facebooksiden vår

Den mest komplette databasen med medisinske urter støttet av vitenskap

  • Fungerer på 55 språk
  • Urtekurer støttet av vitenskap
  • Urtegjenkjenning etter bilde
  • Interaktivt GPS-kart - merk urter på stedet (kommer snart)
  • Les vitenskapelige publikasjoner relatert til søket ditt
  • Søk medisinske urter etter deres effekter
  • Organiser dine interesser og hold deg oppdatert med nyheter, kliniske studier og patenter

Skriv inn et symptom eller en sykdom og les om urter som kan hjelpe, skriv en urt og se sykdommer og symptomer den brukes mot.
* All informasjon er basert på publisert vitenskapelig forskning

Google Play badgeApp Store badge