Search results for "TENSION"

Remodeling of bronchial and pulmonary muscular arteries in mild/moderate COPD

2014

Pulmonary hypertension is well documented in severe COPD but little is known about vascular remodeling in mild/moderate patients. Aim:To investigate bronchial and pulmonary muscular arteries morphology and the expression of elastic fibers (EF) and collagen I in the lungs of mild/moderate COPD patients. Methods:Lung tissue of 18 COPD subject (FEV1:67±15%pred), 14 non-obstructed smokers(NOS) (FEV1:95±10%pred) and 11 never-smoking controls(CTRL) (FEV1:108±15%pred) was used to analyze the morphology of bronchial and pulmonary muscular arteries and the expression of EF and collagen I in the tunica intima, media and adventitia, using immune- and histochemistry and image analysis. Values (mean±SD)…

Topics in calculus and geometry on metric spaces

2022

In this thesis we present an overview of some important known facts related to topology, geometry and calculus on metric spaces. We discuss the well known problem of the existence of a lipschitz equivalent metric to a given quasiultrametric, revisiting known results and counterexamples and providing some new theorems, in an unified approach. Also, in the general setting of a quasi-metric doubling space, suitable partition of unity lemmas allows us to obtain, in step two Carnot groups, the well known Whitney’s extension theorem for a given real function of class C^m defined on a closed subset of the whole space: this result relies on relevant properties of the symmetrized Taylor’s polynomial…

Baveno VII – Renewing consensus in portal hypertension

2022

To expand on the work of previous meetings, a virtual Baveno VII workshop was organised for October 2021. Among patients with compensated cirrhosis or compensated advanced chronic liver disease (cACLD – defined at the Baveno VI conference), the presence or absence of clinically significant portal hypertension (CSPH) is associated with differing outcomes, including risk of death, and different diagnostic and therapeutic needs. Accordingly, the Baveno VII workshop was entitled “Personalized Care for Portal Hypertension”. The main fields of discussion were the relevance and indications for measuring the hepatic venous pressure gradient as a gold standard, the use of non-invasive tools for the …

Algorithms for coherence checking and propagation of conditional probability bounds

2001

In this paper, we propose some algorithms for the checking of generalized coherence (g-coherence) and for the extension of imprecise conditional probability assessments. Our concept of g-coherence is a generalization of de Finetti’s coherence principle and is equivalent to the ”avoiding uniform loss” property for lower and upper probabilities (a la Walley). By our algorithms we can check the g-coherence of a given imprecise assessment and we can correct it in order to obtain the associated coherent assessment (in the sense of Walley and Williams). Exploiting some properties of the random gain we show how, in the linear systems involved in our algorithms, we can work with a reduced set of va…

Medium-term effects of bisoprolol administration on renal hemodynamics and function in mild to moderate essential hypertension

2007

Arterial hypertension is a significant cause of end-stage renal failure; effective treatment of hypertensive patients reduces the rate of progression of this disorder. ss-Blockers, particularly nonselective agents, are associated with deterioration of renal function in patients with chronic renal failure. Previous studies on the interaction of the beta1-selective adrenergic antagonist bisoprolol with kidney function have been performed only acutely and over the short term. This study was designed to evaluate the antihypertensive efficacy and effects on renal hemodynamics and function of bisoprolol during medium-term (6 mo) treatment of patients with mild to moderate essential hypertension. …

Relationship between aortic stifness and renal resistance index in hypertensive patients

2014

"L'implication d'investisseurs étrangers dans certaines violations des droits de l'homme"

2006

National audience

Is Saffron Able to Prevent the Dysregulation of Retinal Cytokines Induced by Ocular Hypertension in Mice?

2021

Cytokine- and chemokine-mediated signalling is involved in the neuroinflammatory process that leads to retinal ganglion cell (RGC) damage in glaucoma. Substances with anti-inflammatory properties could decrease these cytokines and chemokines and thus prevent RGC death. The authors of this study analysed the anti-inflammatory effect of a hydrophilic saffron extract standardized to 3% crocin content, focusing on the regulation of cytokine and chemokine production, in a mouse model of unilateral laser-induced ocular hypertension (OHT). We demonstrated that following saffron treatment, most of the concentration of proinflammatory cytokines (IL-1β, IFN-γ, TNF-α, and IL-17), anti-inflammatory cyt…

Tra Palermo e Partinico: riconoscimento del paesaggio agrario nel progetto della “città in estensione”

2014

Giuseppe Samonà nel 1976, con piena consapevolezza sulla già allora strutturata condizione di crisi agricola produttivo-occupazionale introduceva il concetto di “città in estensione” rileggendo, in chiave innovativa, alcune delle visioni utopiche di fine Ottocento. Questa particolare accezione di città-campagna appare oggi estremamente interessante in proiezione futura, portando al centro della riflessione disciplinare quegli ambiti territoriali (campagna e centri minori) che, fino ad anni a noi molto prossimi, sono stati quasi esclusivamente intesi quali luoghi in attesa di un’espansione incontrollata ovvero, più semplicemente, destinati all'abbandono. L’ipotesi di “città in estensione” po…

Evoluzione del comportamento idro-meccanico di una sabbia di quarzo dallo stato saturo allo stato asciutto

2022

La nota presenta i risultati di un lavoro sperimentale condotto con lo scopo di analizzare il comportamento idro-meccanico di una sabbia quarzosa per un ampio intervallo del grado di saturazione. Per analizzare le caratteristiche di ritenzione del materiale e per investigare la relazione tra la tensione di snervamento e la suzione di matrice sono state eseguite prove edometriche a suzione controllata e a contenuto d'acqua costante. I risultati ottenuti mostrano che la tensione di snervamento della sabbia non aumenta monotonamente con la suzione. Tale andamento è caratterizzato da un punto di massimo e da valori della tensione di snervamento sostanzialmente coincidenti per la condizioni satu…