Microfilaments
Mostrando 1-12 de 278 artigos, teses e dissertações.
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1. Reactive oxygen species generation mediated by NADPH oxidase and PI3K/Akt pathways contribute to invasion of Streptococcus agalactiae in human endothelial cells
BACKGROUND Streptococcus agalactiae can causes sepsis, pneumonia, and meningitis in neonates, the elderly, and immunocompromised patients. Although the virulence properties of S. agalactiae have been partially elucidated, the molecular mechanisms related to reactive oxygen species (ROS) generation in infected human endothelial cells need further investigati
Mem. Inst. Oswaldo Cruz. Publicado em: 05/04/2018
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2. Morphology and histochemistry of glandular trichomes in Hyptis villosa Pohl ex Benth. (Lamiaceae) and differential labeling of cytoskeletal elements
ABSTRACT Lamiaceae contains many species known for their aromatic properties that are produced by the production of essential oils in glandular trichomes. Hyptis is one of the most common genera of Lamiaceae in the Brazilian flora, and includes several species with medicinal value. However, studies on the morphology and functioning of their glandular trichom
Acta Bot. Bras.. Publicado em: 10/11/2016
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3. Numeric reconstruction of 2D cellular actomyosin network from substrate displacement
Introduction: One of the fundamental structural elements of the cell is the cytoskeleton. Along with myosin, actin microfilaments are responsible for cellular contractions, and their organization may be related to pathological changes in myocardial tissue. Due to the complexity of factors involved, numerical modeling of the cytoskeleton has the potential to
Res. Biomed. Eng.. Publicado em: 27/11/2015
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4. JVG9, a benzimidazole derivative, alters the surface and cytoskeleton of Trypanosoma cruzi bloodstream trypomastigotes
Trypanosoma cruzi has a particular cytoskeleton that consists of a subpellicular network of microtubules and actin microfilaments. Therefore, it is an excellent target for the development of new anti-parasitic drugs. Benzimidazole 2-carbamates, a class of well-known broad-spectrum anthelmintics, have been shown to inhibit the in vitro growth of many protozoa
Mem. Inst. Oswaldo Cruz. Publicado em: 09/09/2014
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5. Aggregative adherent strains of Corynebacterium pseudodiphtheriticum enter and survive within HEp-2 epithelial cells
Corynebacterium pseudodiphtheriticum is a well-known human pathogen that mainly causes respiratory disease and is associated with high mortality in compromised hosts. Little is known about the virulence factors and pathogenesis of C. pseudodiphtheriticum. In this study, cultured human epithelial (HEp-2) cells were used to analyse the adherence pattern, inter
Memórias do Instituto Oswaldo Cruz. Publicado em: 2012-06
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6. 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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7. Avaliação de parametros funcionais e morfologicos da ação da angiotensina II sobre segmentos de tubulos proximais isolados e conservados em soluções de euro-collins e belzer / Funcional and morphological behavior of preserved PCT during treatment using angiotensin II and Losartan
Introdução: A qualidade da conservação obtida em um órgão e a duração do armazenamento seguro são dependentes do tipo de solução e tempo de conservação, estando sujeitas a intercorrências imprevisíveis. Em virtude disso, o parênquima renal e, particularmente, o túbulo contornado proximal (TCP), local onde ocorre necrose tubular aguda (NTA),
Publicado em: 2009
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8. Effects of calcium channel blocker (Verapamil) on human dermal fibroblasts. / Efeitos do bloqueador do canal de cálcio (Verapamil) sobre fibroblastos dérmicos humanos.
Excessive scar tissue (keloids and hypertrophic scars) is a defective wound healing process characterized by overproduction of extracellular matrix. In the present study human dermal fibroblasts treated with 50 mM verapamil changed their normal spindle-shaped morphology to stellate/rounded and showed discrete reorganization of microfilame
Publicado em: 2008
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9. Increase in survival rate and decrease in the expression of actin and fibronectin of the thymus in sepsis treated with supernatant from thymus explant / Aumento da sobrevida e diminuição da expressão de actina e fibronectina no timo, na sepse tratada com sobrenadante de explante de timo
O timo secreta substâncias promotoras da sobrevivência de linfócitos e hormônios ligados à dinâmica do citoesqueleto. Esses agentes são produzidos em grande quantidade pelo animal recém-nato, e apresentam efeito homeostático sobre a população de linfócitos T circulantes, por toda a vida. Na sepse, a atrofia dos órgãos linfóides, o surgimento d
Publicado em: 2007
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10. Desenvolvimento embrionário em ratas wistar prenhes submetidas ao ultra-som terapêutico de 3 MHz
Therapeutic ultrasound is widely used in different aesthetic treatment by young women, who can be irradiated during early gestation. Researches regarding the effects of therapeutic ultrasound on gestation present controversial results. Methodologies incompatible with clinical aspects are used and different methods and technics were employed. However none of
Publicado em: 2007
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11. A espermiogenese em Boophilus microplus (Canestrini, 1887) (Acari:ixodidae) : aspectos estruturais e ultra-estruturais
The objective of this study was to describe the spermatogenesis of the cattle tick (Boophilus microplus) (Canestrini, 1887), based on histological, histochemical, morphologic and ultrastructural infromation. Spermatogenesis occurs in the testis of ticks which begin their blood repast. The gametic cell lineage is isolated in cysts. Spermiogenesis begins in th
Publicado em: 1998
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12. Actin Filaments in Mature Guard Cells Are Radially Distributed and Involved in Stomatal Movement.
Stomatal movements, which regulate gas exchange in plants, involve pronounced changes in the shape and volume of the guard cell. To test whether the changes are regulated by actin filaments, we visualized microfilaments in mature guard cells and examined the effects of actin antagonists on stomatal movements. Immunolocalization on fixed cells and microinject