Intracerebroventricular neuropeptide Y stimulates bile secretion via a vagal mechanism.

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Intracerebroventricular neuropeptide Y stimulates bile secretion via a vagal mechanism.

UNLABELLED The effect of intracerebroventricular injection of neuropeptide Y on biliary secretion was studied in conscious dogs, prepared with gastric and duodenal fistulas and cerebroventricular guides. Bile secretion was increased in a dose-dependent fashion by intracerebroventricular neuropeptide Y. The peak increase was seen after 500 pM/kg of neuropeptide Y which resulted in a 30 x 2% incr...

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Chronic intracerebroventricular administration of anti-neuropeptide Y antibody stimulates starvation-induced feeding via compensatory responses in the hypothalamus.

To investigate how compensatory responses develop after the onset of inhibition of NPY signaling, we examined the effect of continuous intracerebroventricular (ICV) injection of neutralizing NPY antibodies (NPY-ab) on daily and fast-induced food intake in mice. A single ICV injection of NPY-ab reduced food intake in fasted mice. In contrast to a single injection, continuous ICV injection of NPY...

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The involvement of kisspeptin in centrally regulatory mechanism of neuropeptide Y on testosterone secretion in male Wistar rats

Introduction: Numerous studies have demonstrated that kisspeptin, a peptide from the KISS1 gene, plays an important role in regulating the secretion of gonadotropin releasing hormone (GnRH). Also, there is some evidence suggesting that kisspeptin can interact with other neuropeptides for the control of the reproductive axis. In the present study, we have investigated the effect of central admin...

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Neuropeptide Y stimulates autophagy in hypothalamic neurons.

Aging is characterized by autophagy impairment that contributes to age-related disease aggravation. Moreover, it was described that the hypothalamus is a critical brain area for whole-body aging development and has impact on lifespan. Neuropeptide Y (NPY) is one of the major neuropeptides present in the hypothalamus, and it has been shown that, in aged animals, the hypothalamic NPY levels decre...

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Effects of intracerebroventricular injection of neuropeptide Y on energy metabolism.

Our objective was to find out if central injection of neuropeptide Y (NPY) would alter brown fat thermogenesis and white fat lipoprotein lipase activity. The following three groups of Sprague-Dawley rats received five injections over 24 h into the right lateral ventricle: 1) NPY (5 micrograms/injection) and ad libitum food; 2) NPY (5 micrograms/injection) and food restricted to control intake; ...

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ژورنال

عنوان ژورنال: Gut

سال: 1992

ISSN: 0017-5749

DOI: 10.1136/gut.33.11.1562