42 research outputs found

    Banks\u2019 leverage behaviour in a two-agent New Keynesian model

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    In a NK model with two types of rational agents, savers and capitalists, and non- maximizing banks, \u85nancial shocks do a\ua4ect the macroeconomic dynamics depending on banks\u92behaviour as for their leverage ratio. We \u85rst show that the level of banks\u92 leverage - which may be imposed by banks regulation - a\ua4ects the steady state level of output, employment and consumption, as might be expected in a non-Modigliani- Miller world. Di\ua4erent banks\u92 behaviour after a shock has widely di\ua4erent e\ua4ects on the macroeconomic dynamics: passive leverage results to be shock absorbing and capable of neutralizing an initial \u85nancial shock, whilst procyclical behaviour implies higher and more persistent instability and distributive e\ua4ects than the constant lever- age behaviour. Finally, we show that the interaction of procyclical leverage with hysteresis in output and employment stregthens the persistence of financial shocks

    Iron chelating properties of Eltrombopag: Investigating its role in thalassemia-induced osteoporosis

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    Chronic blood transfusions are responsible to cause iron overload, which leads to several complications to end organs and osteoporosis. Iron chelation is needed to remove iron excess and to contain bone-mass loss. Deferasirox is the most recent oral iron chelator that prevents transfusion related iron overload complications. Recently Eltrombopag (ELT) iron chelating properties are emerging. ELT is an agonist at Thrombopoietin receptor, used in treatment of thrombocytopenia. We tested ELT and Deferasirox in iron overloaded osteoclasts from thalassemic patients and donors measuring intracellular iron, TRAP expression and osteoclast activity. We confirmed ELT iron chelation capacity also in bone tissue and a synergic effect when used with Deferasirox. Moreover, having demonstrated its effects on osteoclast activity, we suggest for the first time that ELT could ameliorate bone tissue’s health reducing bone mass loss

    Grape pomace for topical application: Green nades sustainable extraction, skin permeation studies, antioxidant and anti-inflammatory activities characterization in 3d human keratinocytes

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    Food waste is a global problem due to its environmental and economic impact, so there is great demand for the exploitation of new functional applications. The winemaking process leads to an incomplete extraction of high-value compounds, leaving the pomace still rich in polyphenols. This study was aimed at optimising and validating sustainable routes toward the extraction and further valorisation of these polyphenols, particularly for cosmeceutical applications. New formulations based on red grape pomace polyphenols and natural deep eutectic solvents (NaDESs) were here investigated, namely betaine combined with citric acid (BET-CA), urea (BET-U) and ethylene glycol (BET-EG), in which DESs were used both as extracting and carrying agents for polyphenols. The flavonoid profile determined by HPLC-MS/MS analysis showed similar malvidin content (51\u201356 \ub5g mL 121 ) in the DES combinations, while BET-CA gave the best permeation performance in Franz cells, so it was further investigated in 3D human keratinocytes (HaCat spheroids) injured with the pro-oxidant agent menadione. BET-CA treatment showed good intracellular antioxidant activity (IC50 0.15 \ub1 0.02 \ub5g mL 121 in malvidin content) and significantly decreased (p < 0.001) the release of the pro-inflammatory cytokine IL-8, improving cell viability. Thus, BET-CA formulation is worthy of investigation for potential use as a cosmetic ingredient to reduce oxidative stress and inflammation, which are causes of skin aging

    Nonlinearities and expenditure multipliers in the Eurozone

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    We analyze the nonlinear effects of government spending in the Euro area, by using the local projection method and by testing whether the impact of the shock depends crucially on the depth of the recession, on some structural characteristics of the Eurozone (EZ) economies, and on the monetary policy stance. We provide four insights. First, expenditure multipliers in the Euro area are not significantly higher in recessions than in expansions. However they are always above unity. Second, state dependency emerges as soon as deep recession is distinguished from ordinary downturns. Third, structural characteristics, such as the presence of automatic stabilizers, the exchange rate regime, the degree of labor market flexibility, and initial conditions, such as the debt/gross domestic product ratio, do influence the size of expenditure multipliers in the EZ. Fourth, multipliers are much higher when the policy interest rate is at the zero lower bound

    Application of X-Band Wave Radar for Coastal Dynamic Analysis: Case Test of Bagnara Calabra (South Tyrrhenian Sea, Italy)

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    Sea state knowledge has a key role in evaluation of coastal erosion, the assessment of vulnerability and potential in coastal zone utilization, and development of numerical models to predict its evolution. X-band radar measurements were conducted to observe the spatial and temporal variation of the sea-state parameters along a 3 km long sandy-gravelly pocket beaches forming a littoral cell on Bagnara Calabra. We produced a sequence of 1000 images of the sea state extending offshore up to 1 mile. The survey has allowed monitoring the coastline, the directional wave spectra, the sea surface current fields, and the significant wave heights and detecting strong rip currents which cause scours around the open inlets and affect the stability of the submerged reef-type breakwaters. The possibility to validate the data acquired with other datasets (e.g., LaMMA Consortium) demonstrates the potential of the X-band radar technology as a monitoring tool to advance the understanding of the linkages between sea conditions, nearshore sediment dynamics, and coastal change. This work proves the possibility to obtain relevant information (e.g., wave number, period, and direction) for evaluation of local erosion phenomena and of morphological changes in the nearshore and surf zone

    Novel ATP13A2 (PARK9) homozygous mutation in a family with marked phenotype variability

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    Mutations in the ATP13A2 (PARK9) and FBXO7 (PARK15) genes are linked to different forms of autosomal recessive juvenile-onset neurodegenerative diseases with overlapping phenotypes, including levodopa-responsive parkinsonism, pyramidal disturbances, cognitive decline, and supranuclear gaze disturbance. However, the associated genotypes and phenotypes are poorly characterized due to the small number of patients described. Here, we report clinical, instrumental, and genetic findings in an Italian family with novel PARK9 and PARK15 mutations. The proband developed a severe progressive phenotype including juvenile-onset parkinsonism, pyramidal disturbances, cognitive decline, and oculomotor abnormalities. On the contrary, his brother only shows mild abnormalities (pyramidal, cognitive, and oculomotor) on the neurological examination at the age of 31 years. These two brothers both carry a novel homozygous PARK9 missense (p.G877R) and a novel heterozygous PARK15 mutation (p.R481C). The PARK9 mutation replaces a crucial residue for the ATPase activity, and is therefore most likely a loss-of-function mutation and disease-causing in homozygous state. The pathogenic significance of the PARK15 single heterozygous mutation remains unclear. In both sibs, DaTSCAN single photon emission computed tomography showed marked nigrostriatal dopaminergic defects, and transcranial magnetic stimulation detected prolonged central motor conduction time. MRI, including T2*-weighted imaging, detected no evidence of brain iron accumulation. This family, the third reported with homozygous PARK9 mutations and the first with mutations in two genes for atypical juvenile parkinsonism, illustrates that PARK9-linked disease might display wide intra-familial clinical variability and milder phenotypes, suggesting the existence of strong, still unknown, modifiers

    The Redistributive Effects of a Money-Financed Fiscal Stimulus

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    This paper analyzes the redistributive channel of a money financed fiscal stimulus (MFFS). It shows that the way in which this regime is implemented is crucial to determine its redistributive effects and consequently its effectiveness. In normal times, the most effective regime is a MFFS with no additional intervention by the Central Bank to stabilize the real public debt using inflation, whereas a MFFS accompanied by real debt stabilization - through the adjustment of seigniorage - is the most effective one in a ZLB scenario. In a TANK model this regime is so effective to avoid the recessionary effects implied by the ZLB. This result does not hold in a RANK model, where the redistributive channel is absent. Remarkably, contrary to the common wisdom a MFFS is followed by a moderate increase of inflation, which is only temporarily higher than the target

    A Money-Financed Fiscal Stimulus:Redistribution and Social Welfare

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    We analyze the redistribution channel of a money-financed fiscal stimulus (MFFS) versus debt-financed fiscal stimulus (DFFS) in a Borrower–Saver framework. The redistribution channel is larger when we consider an MFFS and borrowers are the main beneficiaries. A liquidity trap scenario amplifies the differences between an MFFS and a DFFS. The redistribution channel makes an MFFS effective at having an expansionary effect in the medium run, despite the adverse scenario. We show, however, that an MFFS increases the consumption gap between the two agents by redistributing income from savers to borrowers. Thus, an MFFS results detrimental for welfare when the welfare function is approximated around the efficient steady state
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