Consulta: subjectFacets:"Neuropeptide Y"
Registros recuperados: 4
Data/hora: 02/06/2024 01:35:43

Leptin and hypothalamic gene expression in early- and late-maturing Bos indicus Nellore heifers
Provedor de dados: 74
Autores: Vaiciunas,Aline; Coutinho,Luiz L.; Meirelles,Flávio V.; Pires,Alexandre V.; Silva,Luis Felipe P.
We investigated wether early-maturing or late-maturing Bos indicus Nellore heifers produced more leptin mRNA in adipose tissues and altered expression of hypothalamic genes related to leptin signaling. Six prepubertal and six pubertal heifers aged about 34 months and weighing 280 kg to 300 kg each were selected from a population of 100 Nellore heifers. Real-time PCR was used to quantify the expression of the leptin gene (LEP) in adipose tissues and the long isoform of the leptin receptor gene (Ob-Rb), the NK2 homeobox 1 hypothalamic marker gene NKX2-1, the suppressor of cytokine signaling 3 gene (SOCS-3), the neuropeptide Y genes (NPY) and the NPY G-protein coupled receptor genes NPY-Y1 and NPY-Y4 in the hypothalamus. Heifers attaining puberty earlier...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bos indicus; Gene expression; Hypothalamus; Leptin; Neuropeptide Y.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400010

A novel neuropeptide Y neuronal pathway linking energy state and reproductive behavior
Provedor de dados: 19
Autores: Muroi, Yoshikage; Ishii, Toshiaki.
Animals consume energy for reproduction, as well as survival. Excess or insufficient energy investment into reproduction, respectively, threatens the survival of parents or leads to the failure of reproduction. Management of energy consumption in reproduction is important, not only for the success of the process, but also for the survival of the parents. Reproductive behaviors, such as mating and parental behavior, are indispensable for achieving each event of reproduction including gametogamy, parturition, and lactation. Therefore, reproductive behavior is one of the important factors in managing energy consumption for reproduction. Orexigenic and anorexigenic molecules in the hypothalamus have been implicated in the regulation of reproductive functions....
Palavras-chave: Neuropeptide Y; Hypothalamus; Dorsal raphe nucleus; Reproductive behavior.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4530

Neuropeptide Y signaling in the dorsal raphe nucleus inhibits male sexual behavior in mice
Provedor de dados: 19
Autores: Inaba, A.; Komori, Y.; Muroi, Y.; Kinoshita, K.; Ishii, T.
Animals change their biological activities depending on their nutritional state. Reproductive functions, including sexual behavior, are suppressed under low-energy conditions; however, the underlying neuronal mechanism is poorly understood. Neuropeptide Y (NPY) is an orexigenic molecule released in response to low-energy conditions and has an inhibitory effect on sexual behavior. We examined how NPY is involved in energy state-dependent regulation of male sexual behavior. Mounting, intromission, and ejaculation were evaluated as parameters of sexual behavior. Almost all parameters indicated that fasting for 24 h suppressed male sexual behavior. Intracerebroventricular injection of NPY inhibited sexual behavior in males that free-fed for 8 h following 24-h...
Palavras-chave: Male sexual behavior; Neuropeptide Y; Dorsal raphe nucleus; Serotonin.
Ano: 2016
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4445

Antisense mRNA for NPY-Y1 receptor in the medial preoptic area increases prolactin secretion
Provedor de dados: 56
Autores: Silveira,N.A.; Franci,C.R.
We investigated the participation of neuropeptide Y-Y1 receptors within the medial preoptic area in luteinizing hormone, follicle-stimulating hormone and prolactin release. Four bilateral microinjections of sense (control) or antisense 18-base oligonucleotides of messenger ribonucleic acid (mRNA) (250 ng) corresponding to the NH2-terminus of the neuropeptide Y1 receptor were performed at 12-h intervals for two days into the medial preoptic area of ovariectomized Wistar rats (N = 16), weighing 180 to 200 g, treated with estrogen (50 µg) and progesterone (25 mg) two days before the experiments between 8.00 and 10:00 a.m. Blockade of Y1 receptor synthesis in the medial preoptic area by the antisense mRNA did not change plasma luteinizing hormone or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neuropeptide Y; Medial preoptic area; Neuropeptide Y-Y1 receptor; Prolactin; MRNA for neuropeptide; Y-Y1 receptor; Luteinizing hormone; Follicle-stimulating hormone.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000900016