To characterize renal transport of Na+ in heart failure, urinary Na+ excretion (UNaV), aldosterone levels, and Na,K-ATPase activity in isolated nephron segments were determined in three groups: control rats, rats with heart failure and moderate sodium retention, and rats with heart failure and severe sodium retention. Heart failure was induced by a fistula between the aorta and vena cava. For t...

Rabbit neutrophils, exposed either to partially purified human C5a or to formylmethionyl-leucyl-phenylalanine in the presence of 5 micrograms ml-1 cytochalasin B underwent a rapid, compound exocytosis. The pattern of granule fusion, as visualized in freeze-fracture replicas, differed depending on the source of messenger calcium. In the presence of extracellular calcium, a linearly directed patt...

Objective(s) Quinazolinones are heterocyclic components (able to form cyclized compounds) which have several medical effects such as anti-malarial, spasmolytic, anti-microbial, sedative, etc. They are also known for their fungicidal properties, inhibition of tyrosine-kinase and DNA repair enzyme poly (ADP-ribose) polymerase (PARP) and are also effective in treatment of cancer, diabetes, and pa...

B. Roynette, P. ValloisM. Yor (3) 26/05/2008 (1) Institut Elie Cartan, Université Henri Poincaré, B.P. 239, 54506 Vandoeuvre les Nancy Cedex (2) Laboratoire de Probabilités et Modèles Aléatoires, Université Paris VI et VII, 4 place Jussieu Case 188 F 75252 Paris Cedex 05 (3) Institut Universitaire de France Abstract This paper consists of three parts : in the first part, we describe a family of...

Abstract. We develop a stochastic calculus for processes which are built by convoluting a pure jump, zero expectation Lévy process with a Volterra-type kernel. This class of processes contains, for example, fractional Lévy processes as studied in Marquardt (2006b). The integral which we introduce is a Skorohod integral. Nonetheless we avoid the technicalities from Malliavin calculus and white n...

This thesis is about convolutive ICA with application to EEG. Two methods for convolutive ICA are proposed. One method, the CICAP algorithm, uses a linear predictor in order to formulate the convolutive ICA problem in two steps: linear deconvolution followed by instantaneous ICA. The other method, the CICAAR algorithm, generalizes Infomax ICA to include the case of convolutive mixing. One advan...

The present in vitro microperfusion study examined apical membrane Na+/H+ antiporter and basolateral membrane Na(HCO3)3 symporter activity in newborn and adult juxtamedullary proximal convoluted tubules. Proton fluxes were determined from the initial rate of change of intracellular pH after a change in the luminal or bathing solution, buffer capacity, and tubular volume of newborn and adult tub...