... perfused after seven nights of Zugunruhe (nighttime migratory restlessness) for neuropeptide Y (NPY)-immunohistochemistry, which is involved in a wide range of functions including energy homeostasis, vision, and fat deposition in birds. Results: We found differential effects of illuminance on locomotor...

...Nagalakshmi Balasubramanian; Sneha Sagarkar; Meha Jadhav; Navneet Shahi; Richa Sirmaur; Amul J. Sakharkar Introduction: Repeated traumatic events result in long-lasting neuropsychiatric ailments, including neuroendocrine imbalances. Neuropeptide Y (NPY) in the arcuate nucleus (Arc) is an important...

... in the hypothalamus expressing neuropeptide Y and agouti-related peptide (NPY/AgRP neurons) are strongly implicated in linking metabolic cues with fertility regulation. Objective: We aimed here to determine the impact of selectively activating NPY/AgRP neurons, critical regulators of metabolism, on the activity...

..., prenatally androgen-treated (PNA) female, vesicular GABA transporter (VGaT)-ires-Cre/tdTomato reporter mice. Immunofluorescence for kisspeptin, β-endorphin, neuropeptide Y (NPY), tyrosine hydroxylase (TH) and neuronal nitric oxide synthase (nNOS) was detected by confocal microscopy, and co-localization...

...). In the present study, we investigated the impact of MT1 receptor deficiency on feeding behavior, locomotor activity and mRNA expression levels encoding for the polypeptide pro-opiomelanocortin (Pomc) and neuropeptide Y (Npy) in the hypothalamic arcuate nucleus (ARC) and the adenohypophysis [pars distalis (PD...

... that 93.7% of orexigenic agouti-related peptide (AgRP) and 94.1% of neuropeptide Y (NPY) neurons located in the ventromedial part of the Arc were DLK1 positive, whereas 36.1% of anorexigenic pro-opiomelanocortin and 34.6% of cocaine- and amphetamine-regulated transcript neurons of the Arc contained DLK1...

... interactions between endogenous kisspeptin tone and other neuropeptides that have direct effects on GnRH neurons, such as neuropeptide Y (NPY) or cocaine- and amphetamine-regulated transcript (CART), since the activity of all these neuropeptides changes during states of negative energy balance. Methods: Loose...

...Dana I. Briggs; Zane B. Andrews Ghrelin plays an important role in energy metabolism by regulating food intake, body weight and glucose homeostasis. In this review, we highlight recent developments describing how ghrelin stimulates neuropeptide Y (NPY) neurons, but not pro-opiomelanocortin neurons...

...) and neuropeptide Y (NPY) in the CSF were measured by radioimmunoassay. Pulse/trough characteristics and correlations were assessed by the ULTRA algorithm, cross-correlation analysis and approximate entropy test. Results: The periodicity of GH pulses was 2.20 h. Although most GH pulses were associated with GHRH...

... (VFI) were similar between groups, but lean and fat animals respectively had low and high indices of adiposity. GH levels were higher in lean and fat animals than in controls. In the arcuate nucleus (ARC), neuropeptide Y (NPY) expression/cell was higher in the lean animals than in normal animals...

... body weight gain including the cannabinoid receptor 1 (CB 1 ), the serotonin receptor 2C, the ghrelin receptor, neuropeptide Y, adiponectin and proopiomelanocortin. We investigated whether the expression of these factors was affected in rats chronically treated with the antipsychotic risperidone...

..., instructions or products referred to in the content or advertisements. Within the ARC, the activities of two major subpopulations of neurones are modulated by gut hormone action. The first population increases food intake and expresses the potent orexigen neuropeptide Y (NPY) [ 4, 5 ]. Arcuate NPY...

...Christine Laborie; François Bernet; Jean Pierre Kerckaert; Eric Maubert; Jean Lesage; Jean Paul Dupouy The effects of glucocorticoids on adrenal neuropeptide Y (NPY) and NPY mRNA levels have been investigated on adult male rats of the Wistar strain subcutaneously injected twice a day...

...Jean-Rémi Pape; Gérard Tramu Hypothalamic neuropeptide Y (NPY) and proopiomelanocortin (POMC)-derived peptides located in the arcuate nucleus (ARC) have been postulated to be good candidates to play a modulatory role during lactation. In the present study, we first quantified, by in situ...

...Catherine M. Kotz; Allen S. Levine; Charles J. Billington Neuropeptide Y increases feeding and decreases measures of brown adipose tissue thermogenesis. In lactating rats, increased feeding, increased hypothalamic neuropeptide Y neuroactivity and decreased thermogenesis occur. Naltrexone...

...Christine Laborie; François Bernet; Isabelle Dutriez-Casteloot; Jean Lesage; Jean Paul Dupouy Catecholamines and neuropeptide Y (NPY) levels were determined in the adrenals of rats treated for 2.5 days with chlorisondamine (6 mg/day), a nicotinic ganglionic blocking agent, metyrapone (66 mg/day...

...Christian Broberger; Marc Landry; Helen Wong; John N. Walsh; Tomas Hökfelt The arcuate nucleus of the hypothalamus houses a number of neurochemically different cell populations. Among these, a dense cluster of small neuropeptide-Y (NPY)-expressing neurons is located in its ventromedial subdivision...

...Janice H. Urban; Indranil Das; Jon E. Levine Neuropeptide Y (NPY) has been shown to stimulate hypothalamic release of luteinizing hormone-releasing hormone (LHRH) both in vitro and in vivo. In female rats, NPY facilitation of LHRH release is greatly augmented in advance of preovulatory LHRH surges...

... (GHRH) and somatostatin (SRIH). At the level of the hypothalamus, both galanin (GAL) and neuropeptide Y (NPY) are thought to regulate the secretion of the above releasing and inhibiting factors. Both peptides are also potent orexigenic agents. We have studied ovariectomised ewes that were either well...

...Stefan Reuss; James Olcese The distribution of neuropeptide Y-like immunoreactivity (NPY-LI) was investigated by immunohistochemistry and radioimmunoassay (RIA) in the brain of the Djungarian hamster ( Phodopus sungorus ) held under either long or short photoperiods. In the diencephalic...