Effect of melatonin and methionine-enkephalin on surfacing responses in goldfish

Satake, Nobuhiro

doi:10.1016/0031-9384(79)90287-7

Cited by 12 publications

(3 citation statements)

References 17 publications

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“…As in mammals [Armstrong et al, 19821, little is known about the behavioral effects of the pineal hormone melatonin in teleost fish. The most detailed studies are those of Satake [1979a] on goldfish (Curussius uurutus), which indicate that intracranial injections of melatonin induce a "sedative" effect comparable with the effects of low dosages of the anesthetic tricaine.…”

Section: Introductionmentioning

confidence: 99%

Effects of Melatonin, Serotonin, and Naloxone on Aggression in Isolated Cichlid Fish (Aequidens pulcher)

Munro

1986

Journal of Pineal Research

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Intracranial injections of 10 micrograms melatonin, with or without 4 micrograms naloxone, result in reduced aggressive responsiveness by the cichlid fish Aequidens pulcher to a mirror presented 20 min later. Naloxone, when administered on its own, had no behavioral effect. Intracranial injections of 25 micrograms serotonin-creatinine sulphate complex (5HT-CS) also reduced aggression. 5HT-CS's action was abolished if the injection included 10 micrograms S-adenosyl homocysteine (SAH), which inhibits the conversion of serotonin to melatonin. This suggests that the behavioral action of 5HT-CS may be mediated by its conversion to melatonin. There is inconclusive evidence to suggest that 37.5 micrograms 5HT-CS, administered in conjunction with 10 micrograms SAH, may reduce aggressiveness; injection of 50 micrograms 5HT-CS, with or without 10 micrograms SAH, induced a pronounced escape behavior which precluded any measurement of aggressiveness in the fish.

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Section: Introductionmentioning

confidence: 99%

Effects of Melatonin, Serotonin, and Naloxone on Aggression in Isolated Cichlid Fish (Aequidens pulcher)

Munro

1986

Journal of Pineal Research

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“…Hormones of the pineal system control activity patterns in fishes as well (VAN VEEN et al, 1976;GOUDIE el al., 1983). SATAKE (1979) was able to show that P-endorphines act as mediators in the operation mechanism of melatonin in goldfish. Behavioural effects produced by melatonin could be counteracted by naloxone, an opiate antagonist.…”

Section: Discussionmentioning

confidence: 97%

The Influence of Metoclopramide and Melatonin on Activity and Schooling Behaviour in Chromis viridis (CUVIER, 1830; Pomacentridae, Teleostei)

Sparwasser

1987

Marine Ecology

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Abstract. The role of prolactin (PRL) in the neuroendocrine control of schooling behaviour and activity in the demoiselle Chromis viridis is analysed by administration of a prolactin‐releasing drug, metoclopramide (Paspertin®). In addition, the dependence of the activity state, schooling time, and colour changes on the administration of an epiphysial hormone, melatonin, is examined. Each substance tested affects schooling behaviour and activity by a different mechanism.

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“…Melatonin may influence the activity of the GnRH pulse generator directly through its binding sites in either the SCN or the pars tuberalis (Cardinali et al, 1979;Glass and Lynch, 1981;Vanecek et al, 1987) and/or indirectly through its interaction with the hypothalamic serotonergic (Olcese, 1985) and endogenous opioid systems (Kumar et al, 1984). Melatonin has been shown to interact with the endogenous opioids (Satake, 1979;Lissoni et al, 1986), which, in turn, may act as a transducer of pinealmediated inhibition of gonadotropin release (Kumar et al, 1984).…”

Section: Melatonin and The Gnrh Pulse Generatormentioning

confidence: 97%

The Pineal Gland and the Menstrual Cycle

Sandyk

1992

International Journal of Neuroscience

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The menstrual cycle reflects the expression of a cyclical process involving the interaction between the hypothalamic-pituitary axis and the ovaries. This complex process requires an integrated neural and humoral control mechanism. It is now well established that a hypothalamic "transducer" located in the medial basal hypothalamus integrates neural and humoral information and translates it into an oscillatory signal which eventually results in the release of the gonadotropin releasing hormone (GnRH), triggering the secretion of gonadotropins from the pituitary gland. Recent animal studies indicate that melatonin influences the functions of the hypothalamic-pituitary-gonadal axis by modifying the firing frequency of the hypothalamic GnRH pulse generator. Consequently, the pineal gland, through the action of melatonin, may exert an important modulatory effect on the mechanisms controlling menstrual cyclicity. Furthermore, abnormal melatonin functions may be involved in the pathogenesis of several disorders of the menstrual cycle including some forms of hypothalamic amenorrhea such as exercise and malnutrition-induced amenorrhea. Consideration of pineal melatonin functions provides a new dimension into the understanding of the neuroendocrine mechanisms governing the cyclical phenomena of the female reproductive system.

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Effect of melatonin and methionine-enkephalin on surfacing responses in goldfish

Cited by 12 publications

References 17 publications

Effects of Melatonin, Serotonin, and Naloxone on Aggression in Isolated Cichlid Fish (Aequidens pulcher)

Effects of Melatonin, Serotonin, and Naloxone on Aggression in Isolated Cichlid Fish (Aequidens pulcher)

The Influence of Metoclopramide and Melatonin on Activity and Schooling Behaviour in Chromis viridis (CUVIER, 1830; Pomacentridae, Teleostei)

The Pineal Gland and the Menstrual Cycle

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