N-(2-(5-Methoxyindol-3-yl)ethyl)acetamid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R60:Kann die Fortpflanzungsfähigkeit beeinträchtigen.
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
S53:Exposition vermeiden - vor Gebrauch besondere Anweisungen einholen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Beschreibung
Melatonin, at times referred to as the “hormone of darkness,” normally is secreted during the night.
It is synthesized in the pineal gland, and its secretion is controlled by the suprachiasmatic nucleus, following an
endogenous circadian rhythm. Studies indicate that melatonin may
Chemische Eigenschaften
Off-White Powder
Occurrence
Melatonin is a naturally occurring hormone in the body.
History
Melatonin, chemically known as N-acetyl-5-methoxytryptamine, has a history of scientific exploration, evolving from a biological enigma to precise molecular identification. As early as the beginning of the 20th century, scientists observed that pineal gland extracts had a bleaching effect on pigmentation in amphibian skin, but the identity of the active substance remained undetermined. It wasn't until 1958 that American dermatologist Aaron Bunsen Lerner and his colleagues at Yale University, through painstaking isolation and purification of bovine pineal gland extracts, finally successfully isolated and identified this active compound. Lerner's team, including James D. Case, Yoshiyata Takahashi, and Teh H. Lee, extracted trace amounts of the active substance from over 250,000 bovine pineal glands, determined its chemical structure, and named it "Melatonin," after its bleaching effect on melanocytes. This discovery not only solved a long-standing mystery about the function of the pineal gland but also laid the foundation for subsequent research. As research progresses, the crucial role of melatonin, an important neuroendocrine hormone, in regulating circadian rhythms, sleep-wake cycles, and seasonal reproduction in mammals is gradually being revealed.
Verwenden
Melatonine can be used in sleep induction, modifies circadian rhythm, antioxidant, free radical scavenger
Definition
ChEBI: A member of the class of acetamides that is acetamide in which one of the hydrogens attached to the nitrogen atom is replaced by a 2-(5-methoxy-1H-indol-3-yl)ethyl group. It is a hormone secreted by the pineal gland in humans.
Weltgesundheitsorganisation (WHO)
Melatonin is promoted as a cure for travel sickness, jet-lag and
insomnia and has recently been claimed in the United States to reverse the ageing
process. A synthetic version has been freely available from health food shops and
pharmacies as a "nutritional supplement" since 1993.
Allgemeine Beschreibung
A hormone that has been postulated as being a mediator of photic-induced anti-gonadotropic activity in photoperiodic mammals. Counteracts the apoptotic effects of etoposide in bone marrow cells. Melatonin receptors are coupled to a G-protein system. Inhibits rat cerebellar nitric oxide synthase (NOS).
Biologische Aktivität
Endogenous hormone that acts as an agonist at melatonin receptors MT 1 and MT 2 . Exhibits a prominent role in the control of circadian rhythm, displays immunomodulatory activity and acts as a powerful antioxidant in vivo .
Clinical Use
Melatonin is most effective in young individuals and appears to be less effective in elderly individuals (possibly because of a decreased number of receptors). Melatonin causes a phase shift of approximately 1 hour per day. This means that the use of melatonin in the morning can delay the onset of evening sleepiness, whereas melatonin taken in the evening has been associated with faster onset of sleep and increased total sleep time. Melatonin is sold as a food supplement in the United States, but it has become popular for use as a hypnotic and for alleviating jet lag (a flight across five or more time zones) and helping to resynchronize individuals who have difficulty adapting to night-shift work. have effects on circadian rhythm and sleep processes. The presence of a pharmacologically specific receptor for melatonin in which the molecular structure is known are referred to as MT1, MT2, and MT3 receptors. The MT1 and MT2 receptors are high-affinity G protein coupled receptors, whereas MT3 is a form of quinone reductase. The MT1 receptor appears to be primarily involved in initiating sleep, whereas the MT2 receptor appears to mediate melatonins effect in the eye, circadian rhythm, and vascular effects. The importance of MT3, although widely distributed in different tissues, is currently unknown. The normal physiological concentration of melatonin observed at night is approximately 100 to 200 pg/mL, and oral doses of 0.1 to 0.3 mg of melatonin are adequate to obtain these concentrations even though melatonin frequently is given at doses of 1 to 10 mg to obtain supraphysiological levels. These higher doses may be the reason for some of the side effects not currently associated with the melatonin receptors.
N-(2-(5-Methoxyindol-3-yl)ethyl)acetamid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
