Search results for "NAD"

Requirement for the Proton-Pumping NADH Dehydrogenase I of Escherichia Coli in Respiration of NADH to Fumarate and Its Bioenergetic Implications

1997

In Escherichia coli the expression of the nuo genes encoding the proton pumping NADH dehydrogenase I is stimulated by the presence of fumarate during anaerobic respiration. The regulatory sites required for the induction by fumarate, nitrate and O2 are located at positions around –309, –277, and downstream of –231 bp, respectively, relative to the transcriptional-start site. The fumarate regulator has to be different from the O2 and nitrate regulators ArcA and NarL. For growth by fumarate respiration, the presence of NADH dehydrogenase I was essential, in contrast to aerobic or nitrate respiration which used preferentially NADH dehydrogenase II. The electron transport from NADH to fumarate …

L'anarquisme i el camperolat valencià: la readaptació d'una ideologia d'élites per la cultura popular

1992

EL PRESENTE ARTICULO TRATA DE EXPLICAR LA READAPTACION QUE CIERTOS INDIVIDUOS DEL MUNDO RURAL VALENCIANO HICIERON A PRINCIPIOS DE NUESTRO SIGLO DE ESA CONTRADICTORIA IDEOLOGIA A LA QUE LLAMAMOS ANARQUISMO. EL ANARQUISMO RURAL VALENCIANO FUE EL RESULTADO DE UN PROCESO DE ACULTURACION DONDE SE FUNDIERON DOS REALIDADES MENTALES DISTINTAS: UNA IDEOLOGIA HEREDERA DE FILOSOFIAS DIECIOCHESCAS Y DECIMONONICAS ELABORADA POR INTELECTUALES URBANOS Y UNA MILENARIA CULTURA RURAL MEDITERRANEA. ESTE "ANARQUISMO POPULAR" TUVO SU ECLOSION MAS NOTABLE Y LLAMATIVA EN 1936: UNA MEZCLA DE SUEÑOS DE FRATERNIDAD Y DE PUREZA MORAL, RITUALES DE SANGRE Y FUEGO DE PASMOSA ANTIGÜEDAD Y CONCRECIONES ECONOMICAS MAS O ME…

Intracellul�re Verteilung von Choriongonadotropin in der Placenta des Menschen

1954

1. Reife, frische Placenten wurden in ihre einzelnen Zellelemente (Zellkerne, Mitochondrien, Mikrosomen + Cytoplasma) getrennt und auf chemische Zusammensetzung und Choriongonadotropingehalt nach dem Krotentest untersucht.

Control procedural del movimiento en Blender

2017

En un entorno de animación por ordenador, la posición de cualquier objeto en la escena viene dada por sus coordenadas cartesianas, p=(x,y,z). Por tanto, conseguir que un objeto se mueva consistirá en construir una secuencia de posiciones a medida que avanza el tiempo, p(t) = (x(t),y(t),z(t)) En este ejercicio, vamos a conseguir un movimiento que consista en desplazar un objeto de forma procedural.

Detection of mitochondrial electron chain carrier redox status by transhepatic light intensity during rat liver reperfusion.

2003

The aim of the study was to investigate mitochondrial electron transfer during rat liver reperfusion after cold storage and hypothermic machine perfusion. Livers from male Brown Norway rats were preserved (UW) for 10h either by cold storage (CS) or by hypothermic oxygenated perfusion extracorporal (HOPE). Transhepatic photometric analysis allowed determination of the redox status of mitochondrial cytochromes during preservation, rewarming and reperfusion. Mitochondrial electron chain carriers were inhibited at different sites with rotenone and cyanide in some experiments. reversed transcriptional polymerase chain reaction (RT-PCR) was performed after reperfusion concerning transcription of …

Oxidative burst and neutrophil elastase contribute to clearance of Aspergillus fumigatus pneumonia in mice.

2014

Polymorphonuclear neutrophils (PMN) are important for the control of invasive aspergillosis (IA), a major threat to immunocompromised individuals. For clearance of Aspergillus fumigatus infections, PMN employ their potent oxidative and non-oxidative mechanisms. To clarify the relative contribution of these mechanisms, we analyzed p47(phox-/-), gp91(phox-/-) and elastase (ELA) deficient mice (ELANE) after intratracheal infection with A. fumigatus. Infected p47(phox-/-) and gp91(phox-/-) mice died within 4 days and had a significant higher fungal burden in the lungs compared to wild-type controls. Interestingly, the survival of ELANE mice after infection was unimpaired suggesting that ELA is …

De la protesta a las propuesta

2002

Effect of nonprotein thiols on protein synthesis in isolated rat hepatocytes.

1996

The ability of nonprotein thiols to modulate rates of protein synthesis was investigated in isolated rat hepatocytes. Addition of cysteine stimulates protein labelling by [14C]Leucine. Glutathione depletion, induced by in vivo administration of L-buthionine sulfoximine and diethylmaleate, did not alter the effect of cysteine, although it decreased the rate of protein synthesis by 32%. The effect of cysteine on protein synthesis does not seem to be related to a perturbation of the redox state of the NAD+/NADH system or to changes in the rate of gluconeogenic pathway. The following observations indicate that cysteine may stimulate protein synthesis by increasing intracellular levels of aspart…

Identification of antimicrobial peptides in the gonad of European sea bass males and females

2015

In vertebrates, the gonad is considered an immunologically privileged site as it triggers lower immune responses aiming to avoid germ cell damage. In fish,several studies reported that leucocytes show conditioned immune response and modulate some reproductive functions, allowing the pathogen to establish chronic and latent infections into reproductive organs. In mammals, antimicrobial peptides (AMPs) have recently been recognised as important effectors in male reproductive tract immunity. In fish, AMPs are increasingly recognized as a critical first line of defence against many pathogens as bacteria, fungi, virus, protozoa and even tumour cells. We have recently determined that the European…

Selective oxidation of propane over alkali-doped Mo-V-Sb-O catalysts

2009

[EN] Alkali metal-doped MoVSbO catalysts have been prepared by impregnation of a MoVSbO-mixed oxide (prepared previously by a hydrothermal synthesis) and finally activated at 500 or 600 degrees C in N-2. The catalysts have been characterized and tested for the selective oxidation of propane and propylene. Alkali-doped catalysts improved in general the catalytic performance of MoVSbO, resulting more selective to acrylic acid and less selective to acetic acid than the corresponding alkali-free MoVSbO catalysts. However, the specific behaviour strongly depends on both the alkali metal added and/or the final activation temperature. At isoconversion conditions, catalysts activated at 600 degrees…