Actin Cytoskeleton
Mostrando 13-24 de 947 artigos, teses e dissertações.
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13. Resposta celular à infecção por Campylobacter. jejuni em embriões e explants de íleo de aves e participação do citoesqueleto e lisossomos no processo de invasão em células CACO-2
The host-pathogen interactions of C. jejuni is a little explored subject in birds and humans. Thus, this study aimed to evaluate the passage and the effects of virulent strain of C. jejuni IAL 2383 in SPF embryos of birds, the expression of cytokines and morphological changes in SPF birds explants ileum infected with C. jejuni and verify the cytoskeleton and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2011
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14. Produção recombinante e caracterização de uma desintegrina da peçonha de Rhinocerophis alternatus (antiga Bothrops alternatus) com atividade antimetastática visando o desenvolvimento de um novo fármaco
This work presents the study of the effects of an RGD disintegrin from Rhinocerophis alternatus (ancient Bothrops alternatus) in key steps of the metastatic cascade. Disintegrins are cysteine-rich peptides, which have several biological activities related to cell-cell interaction and cell adhesion. The correct pairing of disulfide bonds exposes the adhesive
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/06/2011
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15. Vias de sobrevivência e morte em queratinócitos submetidos ao estresse oxidativo e choque hiperosmótico / Survival and death signaling pathways in keratinocytes exposed to oxidative stress and hyperosmotic shock
The epidermis is constantly confronted with multiple environmental stressors. Changes in humidity or exposition to UV radiation affect the redox state and osmotic balance, modifying the physiological characteristics of the skin. In response to different stresses, epidermal keratinocytes can activate distinct signaling pathways and the balance between death a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/06/2011
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16. ARHGAP21 inibe a secreção de insulina estimulada por glicose através da modulação aa FAK, CDC42 E PKC dzeta / ARHGAP21 inhibits glucose-stimulated insulin secretion through through FAK, CDC42 and PKC dzeta
Background/Aims: ARHGAP21 is a Rho-GAP that promotes activation of the Rho-GTPase Cdc42 intrinsic factor, which is responsible for the hydrolysis of GTP to GDP and those proteins inactivation. ARHGAP21 associates with PKC? in cardiomyocytes and to the C-terminal portion of FAK in glioblastoma, inhibiting Rho-GTPases and actin cytoskeleton rearrangement. Cdc4
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2011
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17. Estudos estruturais e funcionais das proteínas cinases humanas Nek1 e Nek6 / Structural and functional studies of Nek1 Nek6 protein kinases
NIMA was identified and functionally characterized in Aspergillus nidulans as a critical Ser/Thr kinase for cell cycle progression. The mammalian Neks (NIMA-related kinases) represent an evolutionarily conserved family of 11 serine/threonine kinases that share 40-45% identity with NIMA N-terminal domain. Neks are associated to cell cyclerelated functions and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/03/2011
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18. Trypanosoma cruzi trypomastigotes induce cytoskeleton modifications during HeLa cell invasion
It has been recently shown that Trypanosoma cruzi trypomastigotes subvert a constitutive membrane repair mechanism to invade HeLa cells. Using a membrane extraction protocol and high-resolution microscopy, the HeLa cytoskeleton and T. cruzi parasites were imaged during the invasion process after 15 min and 45 min. Parasites were initially found under cells a
Memórias do Instituto Oswaldo Cruz. Publicado em: 2011-12
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19. Hypothyroidism decreases proinsulin gene expression and the attachment of its mRNA and eEF1A protein to the actin cytoskeleton of INS-1E cells
The actions of thyroid hormone (TH) on pancreatic beta cells have not been thoroughly explored, with current knowledge being limited to the modulation of insulin secretion in response to glucose, and beta cell viability by regulation of pro-mitotic and pro-apoptotic factors. Therefore, the effects of TH on proinsulin gene expression are not known. This led u
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-10
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20. Vimentin and laminin are altered on cheek pouch microvessels of streptozotocin-induced diabetic hamsters
OBJECTIVE: Normal endothelial cells respond to shear stress by elongating and aligning in the direction of fluid flow. Hyperglycemia impairs this response and contributes to microvascular complications, which result in deleterious effects to the endothelium. This work aimed to evaluate cheek pouch microvessel morphological characteristics, reactivity, permea
Clinics. Publicado em: 2011
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21. Estudo da suscetibilidade de amastigotas extracelulares das cepas G e CL de Trypanosoma cruzi a componentes do sistema imune inato e adaptativo. Avaliação da atividade pró-fagocítica da P21-His6
Trypanosoma cruzi é o agente etiológico da doença de Chagas. Devido à ampla diversidade genética existente em T. cruzi, a espécie foi dividida em seis discretas unidades de tipagem (DTU), denominadas T.cruzi I a VI. A cepa G pertence ao grupo T.cruzi I e a CL a T.cruzi VI. Formas amastigotas extracelulares (AE) são consideradas importantes na manuten�
Publicado em: 2011
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22. GTPases Rho e o potencial regenerativo da retina de mamíferos / Rho GTPases and the regenerative potential of the mammalian retina
Ciliary Body (CB) is a potential source of stem cells in the adult retina, but its activation is still unknown. Rho GTPases play a role in actin-based cytoskeleton reorganization, regulate signaling pathways and gene transcription, cell survival and cell proliferation. In this study we investigated the expression of Rho GTPases in CB cells and their role on
Publicado em: 2010
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23. Characterization of the actions of Crotalus durissus terrificus venon on neutrophils functions / Caracterização das ações do veneno de Crotalus durissus terrificus sobre funções de neutrófilos
Previous studies showed that Crotalus durissus terrificus snake venom (CdtV) has long-lasting anti-inflammatory properties and inhibits the spreading and the phagocytic activity of peritoneal macrophages. Crotoxin (CTX), the main component of CdtV, is responsible for these effects. In addition, CdtV inhibits, in vitro and in vivo, the phagocytic activity of
Publicado em: 2010
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24. Actin-interacting and flagellar proteins in Leishmania spp.: bioinformatics predictions to functional assignments in phagosome formation
Several motile processes are responsible for the movement of proteins into and within the flagellar membrane, but little is known about the process by which specific proteins (either actin-associated or not) are targeted to protozoan flagellar membranes. Actin is a major cytoskeleton protein, while polymerization and depolymerization of parasite actin and ac
Genetics and Molecular Biology. Publicado em: 2009