No description available.

Patterns of proliferation and changes in total cell number in the optic nerve, tract and tectum of goldfish have been examined following optic nerve crush or optic enucleation, using bromodeoxyuridine to label the proliferating cells. In general, an increase in proliferation and total cell number in all parts of the visual system was observed peaking between 7 and 14 days and resolving itself to normal or near normal levels by 32 days postoperative. Enucleation resulted in elevated proliferation values as compared to animals with an optic nerve crush, at least one early timepoint in each part of the visual system, but overall, there is little to suggest that axons are exerting a major effect on the cellular response. Finally, a seasonal effect on the proliferative response of non-neuronal cells and axonal regrowth has been demonstrated. Fish acclimatized under autumn-like conditions showed a faster initiation of the non-neuronal cell response and an enhanced rate of axonal regrowth when compared to fish acclimatized under spring-like conditions. It is believed that photoperiod plays a major role in the seasonal effects observed with temperature playing only a minor one.

This study aims at providing a new technique for the isolation and culture of goldfish microglial cells. So far no protocol has been designed for the growth of these cells in vitro, despite the growing interest in the remarkable capacity of goldfish central nervous system (CNS) for regenerating severed axons. This newly developed technique has little or no similarity to those used in the isolation of mammalian microglia, and is distinguished by its simple setup and its fast yield for microglial cells. In addition, a virtually pure population of microglia was generated when plated on untreated plastic dishes, eliminating further need for purification. This technique may thus provide a starting point for future characterization of the microglial cells in vitro, which may eventually help toward building a better understanding of the function and biology of these cells. A preliminary morphological characterization of the cells has also been conducted, in addition to groundwork experiments on the phagocytic activity of these cells in vitro, using myelin to stimulate phagocytosis. These assays were oriented toward providing a comparison to the mammalian cultures of microglia, and so far, displayed several similarities in morphologies and phagocytosis.

No description available.

Diss. (sammanfattning) Stockholm : Karol. inst., 2003. / Härtill 5 uppsatser.

Thesis (M.Sc.). / Written for the Dept. of Neurology and Neurosurgery. Title from title page of PDF (viewed 2008/05/14). Includes bibliographical references.

Thesis (Ph.D.)--Virginia Commonwealth University, 2009. / Prepared for: Dept. of Anatomy and Neurobiology. Title from title-page of electronic thesis. Bibliography: leaves 151-167

Orientador: Cecília Amélia de Carvalho Zavaglia / Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica / Made available in DSpace on 2018-08-27T18:19:16Z (GMT). No. of bitstreams: 1 Carvalho_ClaudioRobertoCutrim_D.pdf: 4942527 bytes, checksum: c95fc9ea9d486c5f468d6780906cc6c5 (MD5) Previous issue date: 2015 / Resumo: Este trabalho tem como objetivo a fabricação de 3 classes de dispositivos implantáveis para liberação de drogas, produção intra-corpórea de proteínas recombinantes e regeneração de tecidos. Os dispositivos fabricados, a saber são: biorreator implantável para produção de proteínas recombinantes intra-corpóreo, um protótipo construído de titânio (usinado) e outro bioaborvivel construído com poli(ácido láctico-co-glicólico) 50/50% através da litografia macia; sistema anti-infecção composto de termoresistores para produção de calor com o objetivo de inibir o crescimento bacteriano associado com microreservatórios para liberação de antibióticos bactericidas; neurotubos e dispositivos de liberação de drogas implantáveis, o primeiro para fomentar a regeneração de nervos periféricos, e o último com objetivo de liberar drogas, os materiais usados na fabricação destes dispositivos foram o Poli-Dimetil Siloxano(PDMS) e o PSG(Poli-Sebacato de Glicerol).Os 4 dispositivos tem como processo de fabricação principal a tecnologia de litografia macia. Em relação aos resultados, o biorreator implantável produziu as proteínas recombinantes BMP-2 (induzem formação óssea) verificadas através de testes in vitro de detecção das proteínas recombinantes; os resultados do desenvolvimento do neurotubo e dispositivos implantáveis, resultaram em testes de liberação de antibióticos in vivo com sucesso em ratos da raça Winstar; o sistema anti-infecção apresentou resultados animadores quanto a função de seus componentes principais: o termoresistor através da monitoração da produção de corrente, e os reservatórios liberadores de antibióticos, através dos testes in vitro com culturas bacterianas. Palavras-chave: Litografia macia, sistema anti infecção, biorreator, regeneração nervosa / Abstract: The main goal of this work is the manufacturing of four classes of implantable devices for delivering drugs, recombinant proteins for intra-body production and tissue regeneration. The 3 devices are: implantable bioreactor for the production of recombinant proteins intra- corporeal, one prototype built in titanium(machined) and the other one bioabsorbable, constructed with poly (lactic-co-glycolic acid) 50/50% through the soft lithography technology; System anti-infection compounds of resistance thermometers for heat production with the goal inhibiting bacterial growth with the associated microreservoirs to deliver bactericidal antibiotics; Neurotubes and implantable drugs release devices, the first dedicated for peripheral nerve regeneration, and second one for release drugs, the materials used in the manufacture of these devices was Poly-dimethyl siloxane (PDMS) and PSG (poly-glycerol sebacate). The 4 devices has main manufacturing process the soft lithography technology. About results, the implantable bioreactor produced recombinant proteins BMP-2 (induce bone formation) verified through testing in-vitro for detection of the recombinant protein; The development of neurotube and implantable devices results in successfully liberation tests of antibiotics in-vivo in rats Winstars. The anti-infection system showed encouraging results as the function of its main components: the termoresistor through the tests of current production and monitoration, and the releasing reservoirs of antibiotics, through the testes in vitro with bacterial cultures. Key-words: Soft lithography, nerve regeneration, bioreactor, system anti infection / Doutorado / Materiais e Processos de Fabricação / Doutor em Engenharia Mecânica

京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第22315号 / 医博第4556号 / 新制||医||1040(附属図書館) / 京都大学大学院医学研究科医学専攻 / (主査)教授 井上 治久, 教授 伊佐 正, 教授 妻木 範行 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM

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