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| Registros recuperados: 16 | |
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| 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.... |
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Palavras-chave: Neuropeptide Y; Hypothalamus; Dorsal raphe nucleus; Reproductive behavior. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4530 |
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| Alvarado, M. V.; Servili, Arianna; Moles, G.; Gueguen, M.m.; Carrillo, M.; Kah, O.; Felip, A.. |
| Kisspeptins are well known as mediators of the coordinated communication between the brain-pituitary axis and the gonads in many vertebrates. To test the hypothesis that gonadal steroids regulate kiss1 and kiss2 mRNA expression in European sea bass (a teleost fish), we examined the brains of gonad-intact (control) and castrated animals, as well as castrated males (GDX) and ovariectomized females (OVX) that received testosterone (T) and estradiol (E2) replacement, respectively, during recrudescence. In GDX males, low expression of kiss1 mRNA is observed by in situ hybridization in the caudal hypothalamus (CH) and the mediobasal hypothalamus (MBH), although hypothalamic changes in kiss1 mRNA levels were not statistically different among the groups, as... |
| Tipo: Text |
Palavras-chave: Kiss1/kiss2; Gnrh-1/gonadotropin; Feedback action; Sex steroid; Hypothalamus; Perciform. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00359/47009/46969.pdf |
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| Silva,L.E.C.M.; Castro,M.; Amaral,F.C.; Antunes-Rodrigues,J.; Elias,L.L.K.. |
| Estradiol participates in the control of energy homeostasis, as demonstrated by an increase in food intake and in body weight gain after ovariectomy in rats. In the present study, female Wistar rats (200-230 g, N = 5-15 per group), with free access to chow, were individually housed in metabolic cages. We investigated food intake, body weight, plasma leptin levels, measured by specific radioimmunoassay, and the hypothalamic mRNA expression of orexigenic and anorexigenic neuropeptides, determined by real-time PCR, in ovariectomized rats with (OVX+E) and without (OVX) estradiol cypionate treatment (10 µg/kg body weight, sc, for 8 days). Hormonal and mRNA expression were determined at pre-feeding and 4 h after food intake. OVX+E rats showed lower food intake,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Estradiol; Leptin; Orexigenic and anorexigenic neuropeptides; Hypothalamus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000800009 |
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| Cassoli,Clarissa Sanches da Silva; Jorge,Erika Cirstina; Patrício,Mateus; Alves,Helena Javiel; Almeida,Erik Amazonas de; Ledur,Mônica Corrêa; Coutinho,Luiz Lehmann. |
| Brazilian poultry industry has reached a high level of development in both meat and egg production as a result of constant technological modernization. Further improvements can be achieved through genomics, but before this can be accomplished, a better understanding of gene expression profiles and nucleotide polymorphisms is necessary. Since animal physiology is directly or indirectly controlled by the pituitary and hypothalamus, the aim of the present work was to identify and analyze genes expressed in these tissues in chicken lines with different growth potential. Two pituitary and hypothalamus cDNA libraries from 21 day broiler (TT) and layer (CC) chickens lines were constructed and allowed identification of 3,074 unique sequences and 77 single... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pituitary; Hypothalamus; EST; SNP; Chicken. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000600008 |
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| Ferreira-Neto,Marcos L.; Possas,Olga S.; Lopes,Oswaldo U.; Cravo,Sérgio L.. |
| Electrical stimulation of the hypothalamus produces cardiovascular adjustments consisting of hypertension, tachycardia, visceral vasoconstriction and hindlimb vasodilation. Previous studies have demonstrated that hindlimb vasodilation is due a reduction of sympathetic vasoconstrictor tone and to activation of beta2-adrenergic receptors by catecholamine release. However, the existence of a yet unidentified vasodilator mechanism has also been proposed. Recent studies have suggested that nitric oxide (NO) may be involved. The aim of the present study was to investigate the role of NO in the hindquarter vasodilation in response to hypothalamic stimulation. In pentobarbital-anesthetized rats hypothalamic stimulation (100 Hz, 150µA, 6 s) produced hypertension,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hindlimb blood flow; Hypothalamus; Electrical stimulation; Defense reaction. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000200005 |
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| Antunes-Rodrigues,J.; Ruginsk,S.G.; Mecawi,A.S.; Margatho,L.O.; Cruz,J.C.; Vilhena-Franco,T.; Reis,W.L.; Ventura,R.R.; Reis,L.C.; Vivas,L.M.; Elias,L.L.K.. |
| Several forebrain and brainstem neurochemical circuitries interact with peripheral neural and humoral signals to collaboratively maintain both the volume and osmolality of extracellular fluids. Although much progress has been made over the past decades in the understanding of complex mechanisms underlying neuroendocrine control of hydromineral homeostasis, several issues still remain to be clarified. The use of techniques such as molecular biology, neuronal tracing, electrophysiology, immunohistochemistry, and microinfusions has significantly improved our ability to identify neuronal phenotypes and their signals, including those related to neuron-glia interactions. Accordingly, neurons have been shown to produce and release a large number of chemical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hypothalamus; Gaseous neuromodulators; Neuropeptides; Endocannabinoids; Glial cells; Neurotransmitters. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2013000400327 |
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| Lengyel,A.-M.J.. |
| Growth hormone secretion is classically modulated by two hypothalamic hormones, growth hormone-releasing hormone and somatostatin. A third pathway was proposed in the last decade, which involves the growth hormone secretagogues. Ghrelin is a novel acylated peptide which is produced mainly by the stomach. It is also synthesized in the hypothalamus and is present in several other tissues. This endogenous growth hormone secretagogue was discovered by reverse pharmacology when a group of synthetic growth hormone-releasing compounds was initially produced, leading to the isolation of an orphan receptor and, finally, to its endogenous ligand. Ghrelin binds to an active receptor to increase growth hormone release and food intake. It is still not known how... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth hormone; Growth hormone secretagogues; Ghrelin; Somatostatin; Hypothalamus. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000800002 |
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| Tagawa,T.; Fontes,M.A.P.; Potts,P.D.; Allen,A.M.; Dampney,R.A.L.. |
| Neurons in the rostral and caudal parts of the ventrolateral medulla (VLM) play a pivotal role in the regulation of sympathetic vasomotor activity and blood pressure. Studies in several species, including humans, have shown that these regions contain a high density of AT1 receptors specifically associated with neurons that regulate the sympathetic vasomotor outflow, or the secretion of vasopressin from the hypothalamus. It is well established that specific activation of AT1 receptors by application of exogenous angiotensin II in the rostral and caudal VLM excites sympathoexcitatory and sympathoinhibitory neurons, respectively, but the physiological role of these receptors in the normal synaptic regulation of VLM neurons is not known. In this paper we... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Angiotensin receptors; Central cardiovascular pathways; Blood pressure; Hypothalamus; Neurotransmitters. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000600005 |
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| Registros recuperados: 16 | |
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