Pressure Induced Inactivation
Mostrando 1-12 de 31 artigos, teses e dissertações.
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1. Captopril alleviates hypertension-induced renal damage, inflammation, and NF-κB activation
Hypertensive renal damage generally occurs during the middle and late stages of hypertension, which is typically characterized by proteinuria and renal inflammation. Captopril, an angiotensin-converting enzyme (ACE) inhibitor, has been widely used for therapy of arterial hypertension and cardiovascular diseases. However, the protective effects of captopril o
Braz J Med Biol Res. Publicado em: 03/09/2018
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2. GABA-induced inactivation of Cebus apella V2 neurons: effects on orientation tuning and direction selectivity
We investigated the GABA-induced inactivation of V2 neurons and terminals on the receptive field properties of this area in an anesthetized and paralyzedCebus apella monkey. Extracellular single-unit activity was recorded using tungsten microelectrodes in a monkey before and after pressure-injection of a 0.25 or 0.5 M GABA solution. The visual stimulus consi
Braz J Med Biol Res. Publicado em: 22/07/2013
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3. Tratamento com alta pressão hidrostática combinado com diferentes condições de temperatura e pH na inativação do Mycobacterium abscessus / Treatment with high hydrostatic pressure combined with different conditions of temperature and pH on inactivation of Mycobacterium abscessus
Mycobacterium abscessus é um importante patógeno de origem hospitalar que contamina materiais cirúrgicos e biofarmacêuticos. Estes quando mal esterilizados tornam-se agentes infectantes gerando graves patologias nas pessoas que os utilizam. A crescente incidência desse patógeno, as dificuldades de tratamento, a gravidade clínica e, a dificuldade de es
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/06/2012
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4. High pressure-sensitive gene expression in Lactobacillus sanfranciscensis
Lactobacillus sanfranciscensis is a Gram-positive lactic acid bacterium used in food biotechnology. It is necessary to investigate many aspects of a model organism to elucidate mechanisms of stress response, to facilitate preparation, application and performance in food fermentation, to understand mechanisms of inactivation, and to identify novel tools for h
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-08
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5. Nitric oxide regulates angiotensin-I converting enzyme under static conditions but not under shear stress
Mechanical forces including pressure and shear stress play an important role in vascular homeostasis via the control of the production and release of a variety of vasoactive factors. An increase in vascular shear stress is accompanied by nitric oxide (NO) release and NO synthase activation. Previously, we have demonstrated that shear stress induces angiotens
Brazilian Journal of Medical and Biological Research. Publicado em: 2003-09
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6. Effect of High-Pressure-Induced Ice I-to-Ice III Phase Transitions on Inactivation of Listeria innocua in Frozen Suspension
The inactivation of Listeria innocua BGA 3532 at subzero temperatures and pressures up to 400 MPa in buffer solution was studied to examine the impact of high-pressure treatments on bacteria in frozen matrices. The state of aggregation of water was taken into account. The inactivation was progressing rapidly during pressure holding under liquid conditions, w
American Society for Microbiology.
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7. Effects of Pressure-Induced Membrane Phase Transitions on Inactivation of HorA, an ATP-Dependent Multidrug Resistance Transporter, in Lactobacillus plantarum
The effects of pressure on cultures of Lactobacillus plantarum were characterized by determination of the viability and activity of HorA, an ATP-binding cassette multidrug resistance transporter. Changes in the membrane composition of L. plantarum induced by different growth temperatures were determined. Furthermore, the effect of the growth temperature of a
American Society for Microbiology.
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8. Comparative Study of Pressure-Induced Germination of Bacillus subtilis Spores at Low and High Pressures
We have studied pressure-induced germination of Bacillus subtilis spores at moderate (100 MPa) and high (500 to 600 MPa) pressures. Although we found comparable germination efficiencies under both conditions by using heat sensitivity as a criterion for germination, the sensitivity of pressure-germinated spores to some other agents was found to depend on the
American Society for Microbiology.
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9. Photoreactivation of Escherichia coli after Low- or Medium-Pressure UV Disinfection Determined by an Endonuclease Sensitive Site Assay
Photoreactivation of Escherichia coli after inactivation by a low-pressure (LP) UV lamp (254 nm), by a medium-pressure (MP) UV lamp (220 to 580 nm), or by a filtered medium-pressure (MPF) UV lamp (300 to 580 nm) was investigated. An endonuclease sensitive site (ESS) assay was used to determine the number of UV-induced pyrimidine dimers in the genomic DNA of
American Society for Microbiology.
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10. Protective Effect of Sucrose and Sodium Chloride for Lactococcus lactis during Sublethal and Lethal High-Pressure Treatments
The bactericidal effect of hydrostatic pressure is reduced when bacteria are suspended in media with high osmolarity. To elucidate mechanisms responsible for the baroprotective effect of ionic and nonionic solutes, Lactococcus lactis was treated with pressures ranging from 200 to 600 MPa in a low-osmolarity buffer or with buffer containing 0.5 M sucrose or 4
American Society for Microbiology.
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11. Dominant role of smooth muscle L-type calcium channel Cav1.2 for blood pressure regulation
Blood pressure is regulated by a number of key molecules involving G-protein-coupled receptors, ion channels and monomeric small G-proteins. The relative contribution of these different signaling pathways to blood pressure regulation remains to be determined. Tamoxifen-induced, smooth muscle-specific inactivation of the L-type Cav1.2 Ca2+ channel gene in mic
Oxford University Press.
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12. Low-Pressure UV Inactivation and DNA Repair Potential of Cryptosporidium parvum Oocysts
Because Cryptosporidium parvum oocysts are very resistant to conventional water treatment processes, including chemical disinfection, we determined the kinetics and extent of their inactivation by monochromatic, low-pressure (LP), mercury vapor lamp UV radiation and their subsequent potential for DNA repair of UV damage. A UV collimated-beam apparatus was us
American Society for Microbiology.