Search results for "primer"

Targeting V-ATPase in primary human monocytes by archazolid potently represses the classical secretion of cytokines due to accumulation at the endopl…

2014

The macrolide archazolid inhibits vacuolar-type H(+)-ATPase (V-ATPase), a proton-translocating enzyme involved in protein transport and pH regulation of cell organelles, and potently suppresses cancer cell growth at low nanomolar concentrations. In view of the growing link between inflammation and cancer, we investigated whether inhibition of V-ATPase by archazolid may affect primary human monocytes that can promote cancer by sustaining inflammation through the release of tumor-promoting cytokines. Human primary monocytes express V-ATPase, and archazolid (10-100nM) increases the vesicular pH in these cells. Archazolid (10nM) markedly reduced the release of pro-inflammatory (TNF-α, interleuk…

PNA

2009

Bernardo.Gomez@uv.es; Mauricio.Contreras@uv.es Este artículo presenta parte de un estudio que persigue analizar el efecto de las variables de problema y las variables de resolución de problemas en las respuestas de estudiantes de segundo ciclo de educación secundaria obligatoria cuando resuelven problemas multiplicativos de división de fracciones. Se recoge aquí un análisis histórico-epistemológico que ha dado cuenta de los valores de dichas variables y, a partir de resultados preliminares, se sugiere la existencia de interrelaciones entre las variables de problema y las variables de resolución. This article presents part of a study aiming to analyze the effect of problem and problem solvin…

Sonic hedgehog promotes angiogenesis and osteogenesis in a coculture system consisting of primary osteoblasts and outgrowth endothelial cells.

2009

A number of previous studies documented the angiogenic potential of outgrowth endothelial cells in vitro and in vivo and provided evidence that therapeutic success could depend on coculture or coimplantation strategies. Thus, deeper insight into the molecular mechanisms underlying this pro-angiogenic effect of cocultures might provide new translational options for tissue engineering and regenerative medicine. One promising signaling pathway in bone repair involved in neoangiogenesis and bone formation is the sonic hedgehog (Shh) pathway. In this article, we focus on the effect of Shh on the formation of microvessel-like structures and osteoblastic differentiation in cocultures of primary os…

Comparative WSSV infection routes in the shrimp genera Marsupenaeus and Palaemon.

2005

Specific expression of antimicrobial peptide and HSP70 genes in response to heat-shock and several bacterial challenges in mussels

2007

Abstract Defensin, mytilin and myticin are antimicrobial peptides (AMP) involved in mussel innate immunity. Their in vitro antibacterial activity is different according to the targeted bacterial species. To determine if this specificity is correlated to different regulations of gene expressions, adult mussels were challenged in vivo with either Vibrio splendidus LGP32, Vibrio anguillarum , Micrococcus lysodeikticus or by heat shock. RNAs were isolated from circulating hemocytes and AMP mRNAs were quantified by Q-PCR using 28S rRNA as housekeeping gene. In addition, HSP70 gene expression was also quantified as representing non-specific response to stress. In naive mussels, the three AMP mRNA…

Vitamin A deficiency alters the structure and collagen IV composition of rat renal basement membranes.

2005

Retinoids can modulate the expression of extracellular matrix (ECM) proteins with variable results depending on other contributing factors. Because changes in these proteins may alter the composition and impair the function of specialized ECM structures such as basement membranes (BMs), we studied the effects of vitamin A deficiency on renal BMs during the growing period. Newborn male rats were fed a vitamin A-deficient (VAD) diet for 50 d. The ultrastructure of renal BMs was analyzed by electron microscopy. Total collagen IV, the different alpha(IV) chains, matrix degrading metalloproteinases (MMP), and tissue inhibitors of metalloproteinases (TIMP) were quantified by immunocytochemistry a…

Educación artística : revista de investigación

2020

Resumen: A modo de introducción, la productora de animación Disney tiene un gran potencial, desde sus inicios en la década de los años veinte del siglo pasado, para transmitir unos mensajes ideológicos y doctrinales en quienes consumen sus largometrajes, generalmente quienes se encuentran en la infancia. De entre la pluralidad de ideas destaca la mentalidad maniquea que construye la sociedad en base al binomio bondad-maldad negando en la cotidianeidad comportamientos intermedios a esta dualidad; todo ello recurriendo a la imagen como recurso visual de comunicación. Esta aparece como constante en las figuras malvadas que diseña para sus largometrajes y se relaciona con el concepto de estétic…

Fast identification of wine related lactic acid bacteria by multiplex PCR

2013

The microflora of must and wine consists of yeasts, acetic acid bacteria and lactic acid bacteria (LAB). The latter group plays an important role for wine quality. The malolactic fermentation carried out by LAB leads to deacidification and stabilisation of wines. Nevertheless, LAB are often associated with wine spoilage. They are mainly responsible for the formation of biogenic amines. Furthermore, some strains produce exopolysaccharide slimes, acetic acid, diacetyl and other off-flavours. In this context a better monitoring of the vinification process is crucial to improve wine quality. Moreover, a lot of biodiversity studies would also profit from a fast and reliable identification method…

Authentication and identification of Saccharomyces cerevisiae‘flor’ yeast races involved in sherry ageing

2004

Yeasts involved in velum formation during biological ageing of sherry wine have to date been classified into four races of Saccharomyces cerevisiae (beticus, cheresiensis, montuliensis, rouxii) according to their abilities to ferment different sugars. It has been proposed that race succession during biological ageing is essential for the development of the organoleptical properties of sherry wines. In this work we studied the physiological characteristics, the molecular differentiation and the phylogenetic relationships of the four races employing type and reference strains from culture collections and natural environments. Using restriction analysis of the ribosomal region that includes th…

Medicago species affect the community composition of arbuscular mycorrhizal fungi associated with roots

2007

National audience; The symbiosis between plants and arbuscular mycorrhizal fungi (AMF) is ancient and involves 80% of terrestrial plant families. The symbiotic association between AMF and plants was described to be non specific. However, AMF were reported to influence plant community diversity and productivity. On the other way, the effect of plant genotypes belonging to closely related species on AMF diversity has not been explored so far. The aim of this work was to assess the impact of four different Medicago species, M. laciniata, M. murex, M. polymorpha and M. truncatula cv. Jemalong J5, on the composition of AM fungal community, when cultivated in a silty-thin clay soil (Mas d’Imbert,…