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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Organiza??o nuclear do sistema seroton?rgico no enc?falo de morcegos Artibeus planirostris

Leite, Mariana Dias 09 July 2015 (has links)
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-25T23:08:59Z No. of bitstreams: 1 MarianaDiasLeite_DISSERT.pdf: 3236887 bytes, checksum: de54a5e9a05ca367ece5cdde2f640a5c (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-28T00:04:20Z (GMT) No. of bitstreams: 1 MarianaDiasLeite_DISSERT.pdf: 3236887 bytes, checksum: de54a5e9a05ca367ece5cdde2f640a5c (MD5) / Made available in DSpace on 2016-04-28T00:04:20Z (GMT). No. of bitstreams: 1 MarianaDiasLeite_DISSERT.pdf: 3236887 bytes, checksum: de54a5e9a05ca367ece5cdde2f640a5c (MD5) Previous issue date: 2015-07-09 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A serotonina ou 5-hidroxitriptamina (5-HT) ? uma subst?ncia encontrada em muitos tecidos do organismo, inclusive no sistema nervoso atuando como neurotransmissor. Dentro do neuro-eixo, a localiza??o da maioria dos neur?nios 5-HT se sobrep?e com os n?cleos da rafe do tronco encef?lico, na linha m?dia ou em suas proximidades, de tal maneira que a 5-HT neuronal pode ser considerada um marcador dos n?cleos da rafe. Os neur?nios seroton?rgicos projetam-se para praticamente todas as ?reas do enc?falo. Estudos mostram a participa??o da serotonina na regula??o da temperatura, comportamento alimentar, comportamento sexual, ritmos biol?gicos, sono, fun??o locomotora, aprendizagem, entre outras. A anatomia destes grupos foi revisada em muitas esp?cies, inclusive em rato, coelho, gato e primatas, mas nunca antes em uma esp?cie de morcego da Am?rica do Sul. Este trabalho teve como objetivo caracterizar os grupamentos seroton?rgicos no enc?falo do morcego Artibeus planirostris, atrav?s de imunoistoqu?mica para serotonina. Sete morcegos machos adultos da esp?cie Artibeus planirostris (Microchiroptera, Mammalia) foram utilizados nesse estudo. Os animais foram anestesiados, perfundidos por via transcard?aca e tiveram seus enc?falos removidos. Sec??es coronais do enc?falo congelado dos morcegos foram obtidos em micr?tomo de deslizamento e submetidos a rea??o imunoistoqu?mica para 5-HT. Delimitamos os n?cleos linear caudal (CLi), dorsal (DR), mediano (MnR), paramediano (PMnR), pontino (PnR), magno (MgR), p?lido (RPa) e obscuro (Rob) da rafe, al?m dos grupamentos B9 e ventrolaterais rostral e caudal (RVL/CVL). Os grupamentos seroton?rgicos nesta esp?cie de quir?ptero apresentam morfologia e citoarquitetura relativamente semelhante ao descrito em roedores e primatas, confirmando a estabilidade filogen?tica desses grupamentos celulares. / Serotonin or 5-hydroxytryptamine (5-HT) is a substance found in many tissues of the body, including the nervous system acting as a neurotransmitter. Within the neuro-axis, the location of the majority of the 5-HT neurons is superimposed with raphe nuclei of the brain stem, in the median line or its vicinity, so that neuronal 5-HT can be considered a marker of the raphe nuclei. Serotonergic neurons are projected to almost all areas of the brain. Studies show the participation of serotonin in regulating the temperature, feeding behavior, sexual behavior, biological rhythms, sleep, locomotor function, learning, among others. The anatomy of these groups has been revised in many species, including mouse, rabbit, cat and primates, but never before in a bat species from South America. This study aimed to characterize the serotonergic clusters in the brain of the bat Artibeus planirostris through immunohistochemistry for serotonin. Seven adult bat males of Artibeus planirostris species (Microchiroptera, Mammalia) were used in this study. The animals were anesthetized, transcardially perfused and their brains were removed. Coronal sections of the frozen brain of bats were obtained in sliding microtome and subjected to immunohistochemistry for 5-HT. Delimit the caudal linear (CLi), dorsal (DR), median (MnR), paramedian (PMnR), pontine (PNR), magnus (MgR), pallidus (RPA) and obscurus (ROb) raphe nucleus, in addition to the groups B9 and rostral and caudal ventrolateral (RVL/CVL). The serotonergic groups of this kind of cheiroptera present morphology and cytoarchitecture relatively similar to that described in rodents and primates, confirming the phylogenetic stability of these cell clusters.

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