Cellular Physiology
Mostrando 1-12 de 186 artigos, teses e dissertações.
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1. Hypnea musciformis (Wulfen) J. V. Lamour. (Gigartinales, Rhodophyta) responses to gasoline short-term exposure: biochemical and cellular alterations
ABSTRACT Presence of toxic compounds in marine coastal waters has increased exponentially since Industrial Revolution. In this way, we aimed to evaluate biochemical and physiological changes occurring within Hypnea musciformis after short-term exposure to gasoline. Hypnea musciformis was cultivated without gasoline and then exposed to various concentrations
Acta Bot. Bras.. Publicado em: 31/01/2019
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2. Nuclear morphometry and chromatin textural characteristics of basal cell carcinoma
Abstract: Histological subtypes of basal cell carcinoma have biological, evolutionary and distinct prognostic behavior. The analysis of characteristics of the nucleus can provide data on their cellular physiology and behavior. The authors of this study evaluated nuclear morphological parameters and textural patterns of chromatin from different subtypes of ba
An. Bras. Dermatol.. Publicado em: 2015-12
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3. POD-1/Tcf21 overexpression reduces endogenous SF-1 and StAR expression in rat adrenal cells
During gonad and adrenal development, the POD-1/capsulin/TCF21transcription factor negatively regulates SF-1/NR5A1expression, with higher SF-1 levels being associated with increased adrenal cell proliferation and tumorigenesis. In adrenocortical tumor cells, POD-1 binds to the SF-1 E-box promoter region, decreasing SF-1 expression. However, the modulation of
Braz J Med Biol Res. Publicado em: 29/09/2015
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4. Proteomic profiling of liver from Elaphe taeniura, a common snake in eastern and southeastern Asia
Snake liver has been implicated in the adaptation of snakes to a variety of habitats. However, to date, there has been no systematic analysis of snake liver proteins. In this study, we undertook a proteomic analysis of liver from the colubrid snake Elaphe taeniura using a combination of two-dimensional electrophoresis (2-DE) and matrix-assisted laser desorpt
Genet. Mol. Biol.. Publicado em: 2013
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5. A influência do fósforo na toxicidade de cobre e composição bioquímica de Chlorella vulgaris
Metal toxicity to microalgae is dependent on environmental conditions, evolutionary history of the microalgae, and previous exposure of the organism to the specific metal. Also, it is importantly influenced by the physiological condition of the algae in the moment of metal exposure. In this research we investigated several combinations of phosphorus (P) and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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6. Effect of Phytoaccumulation of Arsenic and Chromium on Structural and Ultrastructural Changes of Brake Fern (Pteris vittata)
Structural and ultrastructural changes caused by bioaccumulation of As and Cr in brake fern (Pteris vittata), a known arsenic hyperaccumulator, were investigated. Potted plants of brake fern were exposed to metal treatments of As and Cr for three weeks. Leaf, stem and root samples were collected periodically and fixed for LM (Light Microscopy), SEM (Scanning
Brazilian Journal of Plant Physiology. Publicado em: 2011
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7. The relationship between the cellular location of Leishmania (Leishmania) amazonensis arginase and its role during murine macrophage infection / Relação entre a localização celular da enzima arginase de Leishmania (Leishmania) amazonensis e seu papel na infecção de macrófagos murinos
In the mammal host, Leishmania parasites live inside macrophages escaping from their microbicidal mechanisms, such as the nitric oxide (NO) production. The macrophage NO production by inducible nitric oxide synthase (iNOS) requires L-arginine as substrate, the same amino acid required by arginase to generate ornithine and urea. So, arginase may play a dual r
Publicado em: 2010
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8. In vitro investigations of Cynara scolymus L. extract on cell physiology of HepG2 liver cells
O objetivo deste estudo foi a investigação de uma potente influência do extrato das folhas da alcachofra (ALE) na fisiologia celular e na expressão gênica de enzimas de fase I/II de células hepáticas humanas HepG2 e investigação no potencial efeito protetor celular em células HepG2 contra toxicidade celular induzida por etanol. Ensaios biológicos
Brazilian Journal of Pharmaceutical Sciences. Publicado em: 2009-06
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9. Learning about brain physiology and complexity from the study of the epilepsies
The brain is a complex system, which produces emergent properties such as those associated with activity-dependent plasticity in processes of learning and memory. Therefore, understanding the integrated structures and functions of the brain is well beyond the scope of either superficial or extremely reductionistic approaches. Although a combination of zoom-i
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-01
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10. Disfunção cardíaca em animal nocaute para o receptor do tipo 2 para bradicinina
The Kinins are important peptides concerning control of cardiovascular function. Their action mechanism depend on the activation of two distinct receptor, type 1 and 2 bradykinin receptor (B1R and B2R). They both are coupled to G protein, which are responsible to activate different intracellular pathways, involved in different cellular process. Their role in
Publicado em: 2009
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11. Desenvolvimento de metodos opticos para o estudo do acoplamento neuro-vascular-metabolico intrinseco a dinamica cerebral / Development of optical methods to the study of neuro-metabolic-vascular coupling underlying cerebral dynamics
Task-associated neuronal activity leads to a complex chain of biological events within the brain. The increased energetics gives rise to elevated glucose and oxygen consumption in the tissue. Biochemical and neuronal factors induce changes in blood vessels and variations in blood ow, volume and oxygenation. Although it has been extensively investigated, this
Publicado em: 2009
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12. Efeitos da radiação ultravioleta-b sobre a morfisiologia de kappaphycus alvarezii (DOTY) doty ex P. Silva (gigartinales) variantes pigmentares verde e vermelha
The effects of ultraviolet radiation in the biological relevant wavebands of UV-A (315#400 nm) and UV-B (280#315 nm) on algae have become an important issue as a man-made depletion of the protecting ozone layer has been reported. However, experimental designs to investigate this issue are manifold and the target organisms are extremely diverse. Data are incl
Publicado em: 2009