Neuropeptides
Mostrando 25-36 de 228 artigos, teses e dissertações.
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25. Estudo dos componentes nutricionais e imunológicos na perda de peso em camundongos com alergia alimentar
Allergic diseases have reached epidemic proportions and are characterized by IgE production against antigens that gain the organisms through the mucosas. Here, we used a allergy model which BALB/c mice receive ovalbumin orally after sensitization with ovalbumin. After the oral challenge with egg white solution, the ovalbumin sensitized BALB/c mice usually sh
Publicado em: 2006
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26. Estudo da Ação da Toxina Botulínica do tipo A na profilaxia da Migrânea Sem Aura / Study of the Action of Botulinum Toxin Type A in the Prophylaxis of Migraine Without Aura
A randomized, double-blind, placebo-controlled study of the use of botulinum toxin type A in the prophylactic treatment of Migraine is presented. Migraine is a common type of primary, benign, episodic headache. It is characterized by pain usually unilateral and throbbing. Other associated symptoms are nausea, sensitivity to light and sound, or irritability.
Publicado em: 2004
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27. Role of sensory nervous system vasoactive peptides in hypertension
The goal of the present research was to elucidate the roles and mechanisms by which the sensory nervous system, through the actions of potent vasodilator neuropeptides, regulates cardiovascular function in both the normal state and in the pathophysiology of hypertension. The animal models of acquired hypertension studied were deoxycorticosterone-salt (DOC-sa
Brazilian Journal of Medical and Biological Research. Publicado em: 2002-09
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28. The brain decade in debate: VIII. Peptide hormones and behavior: cholecystokinin and prolactin
This article is a transcription of an electronic symposium held on November 28, 2000 in which active researchers were invited by the Brazilian Society of Neuroscience and Behavior (SBNeC) to discuss the advances of the last decade in the peptide field with particular focus on central actions of prolactin and cholecystokinin. The comments in this symposium re
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-11
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29. Role of the hypothalamic pituitary adrenal axis in the control of the response to stress and infection
The release of adrenocorticotropin (ACTH) from the corticotrophs is controlled principally by vasopressin and corticotropin-releasing hormone (CRH). Oxytocin may augment the release of ACTH under certain conditions, whereas atrial natriuretic peptide acts as a corticotropin release-inhibiting factor to inhibit ACTH release by direct action on the pituitary.
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-10
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30. Sexual behavior and fertility of male rats submitted to prolonged immobilization-induced stress
In order to investigate whether prolonged stress interferes with the onset of sexual behavior at puberty and with fertility at adulthood, prepubertal male Wistar rats (40 days of age) were immobilized 6 h a day for 15 days (up to early puberty) or for 60 days (until sexual maturity). Pubertal stressed rats showed a two-fold increase in the latency for the fi
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-09
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31. Role of sympathetic nervous system and neuropeptides in obesity hypertension
Obesity is the most common cause of human essential hypertension in most industrialized countries. Although the precise mechanisms of obesity hypertension are not fully understood, considerable evidence suggests that excess renal sodium reabsorption and a hypertensive shift of pressure natriuresis play a major role. Sympathetic activation appears to mediate
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-06
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32. Gap junction modulation by extracellular signaling molecules: the thymus model
Gap junctions are intercellular channels which connect adjacent cells and allow direct exchange of molecules of low molecular weight between them. Such a communication has been described as fundamental in many systems due to its importance in coordination, proliferation and differentiation. Recently, it has been shown that gap junctional intercellular commun
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-04
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33. Insect juvenile hormone: from "status quo" to high society
Juvenile hormone (JH) exerts pleiotropic functions during insect life cycles. The regulation of JH biosynthesis by neuropeptides and biogenic amines, as well as the transport of JH by specific binding proteins is now well understood. In contrast, comprehending its mode of action on target organs is still hampered by the difficulties in isolating specific rec
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-02
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34. Migração de neutrofilos induzida por enterotoxinas estafilococicas para a cavidade peritoneal de camundongos : participação de macrofagos
In this study, the role role of macrophages in the neutrophil migration induced by staphylococcal enterotoxins A (SEA) and B (SEB) into the mouse peritoneal cavity was investigated. SEA and SEB induced dose- and timedependent neutrophil migration into the mouse peritoneal cavity. This migration was potentiated when the macrophage population was increased by
Publicado em: 1999
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35. Neuropeptides in gliomas: identification of somatostatin 14 in a medulloblastoma.
Forty nine gliomas were analysed for the following neuropeptides: somatostatin (SS), substance P (SP), neurotensin (NT) and vasoactive intestinal polypeptide (VIP) and the pituitary peptide, adrenocorticotrophin (ACTH). A significant amount of authentic SS was found in a medulloblastoma, and low concentrations of SP and NT immunoreactivity in an ependymoma a
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36. Identification of neuropeptide-like protein gene families in Caenorhabditis elegans and other species
Neuropeptides play critical roles in synaptic signaling in all nervous systems. Unlike classical neurotransmitters, peptidergic neurotransmitters are encoded as preproproteins that are posttranslationally processed to yield bioactive neuropeptides. To identify novel peptidergic neurotransmitters, the Caenorhabditis elegans genome was searched for predicted p
The National Academy of Sciences.