Gap Junction
Mostrando 13-24 de 248 artigos, teses e dissertações.
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13. Evaluation of internal adaptation of Class V resin composite restorations using three techniques of polymerization
OBJECTIVE: The purpose of this in vitro study was to evaluate the internal adaptation of Class V composite restorations to the cavity walls using three different techniques of polymerization. METHODS: Standard cavities were prepared on the buccal and lingual surfaces of 24 extracted human third molars with margins located above and below the cementoenamel ju
Journal of Applied Oral Science. Publicado em: 2007-02
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14. Mechanisms of arrhythmogenesis in cardiomyocytes and development of in vitro model of cardiac hypertrophy and fibrosis induced by Trypanosoma cruzi / Mecanismos envolvidos na arritmogenese em cardiomiocitos e desenvolvimento de modelo in vitro de fibrose e hipertrofia cardiaca induzidos por Trypanosoma cruzi
Infection with protozoan Trypanosoma cruzi causes Chagas disease that among its manifestations presents a severe cardiac form, which can induce arrhythmias and sudden death. In the first part of this work we studied the effect of T. cruzi infection on host cell coupling and calcium homeostasis in monolayered cardiac myocytes. In moments of invasion of the pa
Publicado em: 2007
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15. ComputaÃÃo dendrÃtica: uma abordagem de fÃsica estatÃstica
No campo da neurociÃncia computacional, a atividade elÃtrica dos neurÃnios à tradicionalmente modelada por equaÃÃes diferenciais nÃo-lineares acopladas, representando a evoluÃÃo do potencial de membrana e certas variÃveis relacionadas Ãs condutÃncias iÃnicas presentes no sistema. Uma tendÃncia recente consiste na extensÃo desta estratÃgia de
Publicado em: 2007
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16. Morphology of the cementoenamel junction (CEJ) of deciduous human teeth on scanning electron microscopy (SEM) and the effects of external bleaching / Morfologia da junção amelocementária em dentes decíduos humanos na microscopia eletrônica de varredura e os efeitos da clareação externa
Esthetics is not only important for adults but also for children. External dental bleaching is a feasible and safe alternative of esthetic treatment, as long as performed by the professional under some important required conditions, such as, adequate protection of the teeth and soft tissues, so that risks are as reduced as possible. Since the cementoenamel j
Publicado em: 2006
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17. Avaliação do papel da conexina 43 na angiogênese, experimentalmente induzida em córnea de camundongos / Evaluation the role of connexin 43 during angiogenesis, experimentally induced in mice córnea
The GAP junctions are intercellular streams responsible for the communication between close cells, which allow small molecules and ions to pass through them maintaining the cellular homeostasis. The GAP junction is formed of six proteins, the connexin. In the endothelial cell, there are the connexin 37, 40 and 43. In this study, we stimulated the angiogenesi
Publicado em: 2005
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18. Avaliação do papel da conexina 43 no desenvolvimento do granuloma, experimentalmente induzido em camundongos / Evaluation of the role of connexin 43 in the development of granuloma, experimentally induced in mice
A doença granulomatosa inflamatória envolve interações coordenadas entre linfócitos, monócitos/macrófagos, células epitelióides, eosinófilos, neutrófilos e fibroblastos. A comunicação intercelular mediada por junções gap, constituídas por conexinas, é responsável pela homeostase tecidual. A Cx43 está presente em células linfóides, célul
Publicado em: 2005
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19. Análise da expressão diferencial de genes do folículo ovariano de fêmeas pré-púberes e púberes Bos primigenius indicus (Nelore) por meio da Análise Serial de Expressão Gênica (SAGE) / Analysis of differential gene expression of ovarian follicle from prepubertal and pubertal Bos primigenius indicus (Nelore) females by Serial Analysis of Gene Expression (SAGE)
Puberty is the stage where any mammal, male or female, becomes able to produce viable gametes and manifest complete sexual behavior. These are results from the gradative adjustment between the increase in gonadotrophic activity and the ability of gonads in undergoing simultaneously both steroidogenesis and gametogenesis. One of the major factors interferring
Publicado em: 2005
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20. Expressão e distribuição da conexina 32 em fígados com fibrose experimentalmente induzida / Expression and distribution of connexin 32 in liver with experimentally induced fibrosis
The connexin 32 (Cx32) is a proteic structure that constitute the channels that promote the cell communication by means of the gap junction (GJIC), allowing the diffusion of short cytoplasmic molecules from a cell to another. This work aimed to study these structures due to their importance in the hepatic metabolic processes. The hepatic fibrosis was trigger
Publicado em: 2004
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21. Gap junctions in cells of the immune system: structure, regulation and possible functional roles
Gap junction channels are sites of cytoplasmic communication between contacting cells. In vertebrates, they consist of protein subunits denoted connexins (Cxs) which are encoded by a gene family. According to their Cx composition, gap junction channels show different gating and permeability properties that define which ions and small molecules permeate them.
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-04
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22. The molecular basis of selective permeability of connexins is complex and includes both size and charge
Although gap junction channels are still widely viewed as large, non-specific pores connecting cells, the diversity in the connexin family has led more attention to be focused on their permeability characteristics. We summarize here the current status of these investigations, both published and on-going, that reveal both charge and size selectivity between g
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-04
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23. 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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24. Biophysical characteristics of gap junctions in vascular wall cells: implications for vascular biology and disease
The role gap junction channels play in the normal and abnormal functioning of the vascular wall is the subject of much research. The biophysical properties of gap junctions are an essential component in understanding how gap junctions function to allow coordinated relaxation and contraction of vascular smooth muscle. This study reviews the properties thus fa
Brazilian Journal of Medical and Biological Research. Publicado em: 2000-04