Page last updated: 2024-10-24

regulation of circadian sleep/wake cycle, non-REM sleep

Definition

Target type: biologicalprocess

Any process that modulates the frequency, rate or extent of non-rapid eye movement sleep. [GOC:go_curators]

The circadian sleep/wake cycle is a complex biological process that governs the timing of sleep and wakefulness. It is regulated by an internal biological clock located in the suprachiasmatic nucleus (SCN) of the hypothalamus. The SCN receives light signals from the eyes, which synchronize the clock to the 24-hour day-night cycle. This synchronization is essential for maintaining a regular sleep-wake cycle and for ensuring that sleep occurs at the appropriate time.

Non-REM sleep, also known as slow-wave sleep, is the first stage of sleep and is characterized by a decrease in brain activity, heart rate, and breathing. It is divided into four stages (N1, N2, N3, and REM), each with its own unique characteristics.

The regulation of non-REM sleep involves multiple neurotransmitters and brain regions. Key players include:

* **Hypothalamus:** The hypothalamus is responsible for regulating the sleep-wake cycle, and it releases hormones like orexin and histamine that promote wakefulness.
* **Brainstem:** The brainstem contains the reticular activating system (RAS), which is involved in maintaining wakefulness.
* **Thalamus:** The thalamus acts as a relay station for sensory information and plays a role in the regulation of sleep.
* **Cerebellum:** The cerebellum contributes to motor control and coordination, and may also influence sleep-wake regulation.

Neurotransmitters involved in regulating non-REM sleep include:

* **GABA:** A major inhibitory neurotransmitter that promotes sleep.
* **Serotonin:** Involved in regulating sleep and wakefulness, and can promote sleep.
* **Acetylcholine:** Involved in arousal and wakefulness.

The regulation of non-REM sleep involves a complex interplay of these factors. During the day, light signals from the eyes activate the SCN, which in turn inhibits the release of melatonin, a hormone that promotes sleep. As darkness approaches, the SCN decreases its activity, leading to an increase in melatonin production. This rise in melatonin signals the body to prepare for sleep.

During non-REM sleep, brain activity slows down, and muscle activity decreases. The body enters a state of deep relaxation, and various restorative processes occur. These processes include:

* **Repair and restoration:** Sleep helps to repair the body's tissues, including muscles and organs.
* **Energy conservation:** Sleep reduces energy expenditure, allowing the body to conserve energy.
* **Cognitive function:** Sleep is essential for memory consolidation, learning, and cognitive function.
* **Immune system function:** Sleep strengthens the immune system and helps to protect against illness.

Disruptions to the circadian sleep-wake cycle or to non-REM sleep can have a significant impact on health. These disruptions can lead to problems such as fatigue, impaired cognitive function, mood swings, and an increased risk of chronic diseases. Therefore, it is important to maintain a regular sleep schedule and to create a healthy sleep environment to promote optimal sleep quality.'
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Proteins (3)

ProteinDefinitionTaxonomy
Poly [ADP-ribose] polymerase 1 A poly [ADP-ribose] polymerase 1 that is encoded in the genome of cow. [OMA:P18493, PRO:DNx]Bos taurus (cattle)
Potassium voltage-gated channel subfamily A member 2A voltage-gated potassium channel subunit KCNA2 that is encoded in the genome of human. []Homo sapiens (human)
Poly [ADP-ribose] polymerase 1A poly [ADP-ribose] polymerase 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P09874]Homo sapiens (human)

Compounds (58)

CompoundDefinitionClassesRoles
niacinamidenicotinamide : A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group.pyridine alkaloid;
pyridinecarboxamide;
vitamin B3
anti-inflammatory agent;
antioxidant;
cofactor;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
EC 3.5.1.98 (histone deacetylase) inhibitor;
Escherichia coli metabolite;
geroprotector;
human urinary metabolite;
metabolite;
mouse metabolite;
neuroprotective agent;
Saccharomyces cerevisiae metabolite;
Sir2 inhibitor
1,5-dihydroxyisoquinoline1,5-dihydroxyisoquinoline: structure in first source

isoquinoline-1,5-diol : An isoquinolinol that is isoquinoline in which the hydrogens at positions 1 and 5 are replaced by hydroxy groups.
isoquinolinolEC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
3-aminobenzamidebenzamides;
substituted aniline
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
4-amino-1,8-naphthalimide4-amino-1,8-naphthalimide: inhibits ADP-ribosylation; sometimes abreviated as 4-AN;benzoisoquinoline;
dicarboximide
phenanthridonephenanthridone : A member of the class of phenanthridines that is phenanthridine with an oxo substituent at position 6. A poly(ADP-ribose) polymerase (PARP) inhibitor, it has been shown to exhibit immunosuppressive activity.

phenanthridone: coal tar derivative; structure given in first source
lactam;
phenanthridines
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
immunosuppressive agent;
mutagen
N-(2-aminoethyl)-5-chloro-1-naphthalenesulfonamidenaphthalenes;
sulfonic acid derivative
5-aminoisoquinolinone5-aminoisoquinolinone: structure in first sourceisoquinolines
benzamidebenzamide : An aromatic amide that consists of benzene bearing a single carboxamido substituent. The parent of the class of benzamides.benzamides
5-methoxypsoralen5-methoxypsoralen : A 5-methoxyfurocoumarin that is psoralen substituted by a methoxy group at position 5.

5-Methoxypsoralen: A linear furanocoumarin that has phototoxic and anti-inflammatory properties, with effects similar to METHOXSALEN. It is used in PUVA THERAPY for the treatment of PSORIASIS.
5-methoxyfurocoumarin;
organic heterotricyclic compound;
psoralens
hepatoprotective agent;
plant metabolite
pj-34PJ34 : A member of the class of phenanthridines that is 5,6-dihydrophenanthridine substituted at positions 2 and 6 by (N,N-dimethylglycyl)amino and oxo groups, respectively. It is a potent inhibitor of poly(ADP-ribose) polymerases PARP1 and PARP2 (IC50 of 110 nM and 86 nM, respectively) and exhibits anti-cancer, cardioprotective and neuroprotective properties.phenanthridines;
secondary carboxamide;
tertiary amino compound
angiogenesis inhibitor;
anti-inflammatory agent;
antiatherosclerotic agent;
antineoplastic agent;
apoptosis inducer;
cardioprotective agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
neuroprotective agent
1-hydroxyphthalazine1-hydroxyphthalazine: RN given refers to cpd with unspecified locants; do not confuse with cpd phthalazinol RN: 56611-65-5phthalazines
chlorthenoxazinchlorthenoxazin: RN given refers to parent cpd; structurebenzoxazine
isocarbostyrilisoquinolinone : An isoquinoline containing one or more oxo groups.isoquinolines
flavoneflavone : The simplest member of the class of flavones that consists of 4H-chromen-4-one bearing a phenyl substituent at position 2.

flavone: RN given refers to unlabeled cpd; structure given in first source
flavonesmetabolite;
nematicide
2,4(1h,3h)-quinazolinedione2,4(1H,3H)-quinazolinedione: structure given in first source
4-hydroxybenzamide
naphthalimidesNaphthalimides: Compounds with three fused rings that appear like a naphthalene fused to piperidone or like a benz(de)isoquinoline-1,3-dione (not to be confused with BENZYLISOQUINOLINES which have a methyl separating the naphthyl from the benzyl rings). Members are CYTOTOXINS.
4-fluorobenzamide4-fluorobenzamide: structure in first source
5-iodo-6-amino-1,2-benzopyrone
alantolactonealantolactone : A sesquiterpene lactone that is 3a,5,6,7,8,8a,9,9a-octahydronaphtho[2,3-b]furan-2-one bearing two methyl substituents at positions 5 and 8a as well as a methylidene substituent at position 3.

alantolactone: allergenic sesquiterpene lactone; crystalline mixture of alantolactones from group of sesquiterpenes; structure
naphthofuran;
olefinic compound;
sesquiterpene lactone
antineoplastic agent;
apoptosis inducer;
plant metabolite
4-aminobenzamidebenzamides
4-Methoxybenzamidebenzamides
3-methoxybenzamide
3',4'-dihydroxyflavone3',4'-dihydroxyflavone: inhibitors of arachidonic acid peroxidation
3,4-dihydro-5-methyl-1(2h)-isoquinolinone3,4-dihydro-5-methyl-1(2H)-isoquinolinone: structure given in first sourceisoquinolines
1-oxo-1,2,3,4-tetrahydroisoquinoline1-oxo-1,2,3,4-tetrahydroisoquinoline: structure given in first source
cyclo(alanylalanyl)
N-[4-[[[4-(4-methoxyphenyl)-4-oxanyl]methylamino]-oxomethyl]phenyl]-2-furancarboxamidearomatic amide;
furans
ha 1100HA 1100: intracellular calcium antagonist
apigeninChamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia.trihydroxyflavoneantineoplastic agent;
metabolite
luteolin3'-hydroxyflavonoid;
tetrahydroxyflavone
angiogenesis inhibitor;
anti-inflammatory agent;
antineoplastic agent;
apoptosis inducer;
c-Jun N-terminal kinase inhibitor;
EC 2.3.1.85 (fatty acid synthase) inhibitor;
immunomodulator;
nephroprotective agent;
plant metabolite;
radical scavenger;
vascular endothelial growth factor receptor antagonist
amentoflavonebiflavonoid;
hydroxyflavone;
ring assembly
angiogenesis inhibitor;
antiviral agent;
cathepsin B inhibitor;
P450 inhibitor;
plant metabolite
3',4',7-trihydroxyflavone3',4',7-trihydroxyflavone: from the Sudanese medicinal plant Albizia zygia; structure in first sourceflavones
clathrodinclathrodin: structure given in first source; isolated from marine sponges of the genus Agelas
oroidinoroidin: from marine sponges of the genus Agelas; structure in first sourcepyrroles;
secondary carboxamide
metabolite
hymenidinhymenidin: serotonergic receptor antagonist from Okinawan marine sponge Hymeniacidon; structure given in first source
adenosine diphosphate (hydroxymethyl)pyrrolidinedioldihydroxypyrrolidine;
purine ribonucleoside 5'-diphosphate
ag 14361benzimidazoles
gpi 6150
rucaparibAG14447: Poly(ADP-ribose) polymerase inhibitor; structure in first sourceazepinoindole;
caprolactams;
organofluorine compound;
secondary amino compound
antineoplastic agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
3,4-dihydro-5-(4-(1-piperidinyl)butoxy)-1(2h)-isoquinolinone
veliparibbenzimidazolesEC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
olaparibcyclopropanes;
monofluorobenzenes;
N-acylpiperazine;
phthalazines
antineoplastic agent;
apoptosis inducer;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
niraparib2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamide : A member of the class of indazoles that is 2H-indazole substituted by 4-(piperidin-3-yl)phenyl and aminocarbonyl groups at positions 2 and 7, respectively. It is a potent PARP1 inhibitor with IC50 of 3.2 nM.benzenes;
indazoles;
piperidines;
primary carboxamide
antineoplastic agent;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
niraparibniraparib : A 2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamide that has S-configuration. It is a potent inhibitor of PARP1 and PARP2 (IC50 of 3.8 and 2.1 nM, respectively) and approved as a first-line maintenance treatment for women with advanced ovarian cancer after responding to platinum-based chemotherapy.

niraparib: structure in first source
2-[4-(piperidin-3-yl)phenyl]-2H-indazole-7-carboxamideantineoplastic agent;
apoptosis inducer;
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor;
radiosensitizing agent
cep 26401pyridazines;
ring assembly
iwr-1 endoIWR-1-endo : A dicarboximide having an endo bridged phthalimide structure, substituted at nitrogen by a 4-(quinolin-8-ylcarbamoyl)benzoyl group.benzamides;
bridged compound;
dicarboximide;
quinolines
axin stabilizer;
Wnt signalling inhibitor
nms-p118NMS-P118: a PARP-1 inhibitor; structure in first source
g007-lkG007-LK: potent and specific small-molecule tankyrase inhibitor; structure in first source
nu 1025NU 1064: structure in first sourcephenols;
quinazolines
EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor
2-methyl-4(3h)-quinazolinone2-methyl-4(3H)-quinazolinone: from Bacillus cereus; structure given in first source
4-hydroxyquinazoline4-oxo-3,4-dihydroquinazoline: structure in first sourcequinazolines
1,4-Dihydrothieno[3,2-d]pyrimidin-4-oneorganic heterobicyclic compound;
organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
xav939XAV939 : A thiopyranopyrimidine in which a 7,8-dihydro-5H-thiopyrano[4,3-d]pyrimidine skeleton is substituted at C-4 by a hydroxy group and at C-2 by a para-(trifluoromethyl)phenyl group.

XAV939: selectively inhibits beta-catenin-mediated transcription; structure in first source
(trifluoromethyl)benzenes;
thiopyranopyrimidine
tankyrase inhibitor
2-(4-methoxyphenyl)-1H-quinazolin-4-onequinazolines
bmn 673talazoparib: inhibits both PARP1 and PARP2; structure in first source
me0328ME0328: inhibits ARTD3; structure in first source
nvp-tnks656