Publications by authors named "Marzio P"

In 1766, the agricultural scientist Giovanni Targioni Tozzetti described for the Grand Duchy of Tuscany, the wild and cultivated plant species that could be used, in times of famine, to increase the quantity of flour or vegetable mass in bread making. These wild plants can be defined as wild edible plants (WEPs) or "alimurgic species", a concept usually traced back to Giovanni Targioni Tozzetti himself. The 342 plant names mentioned in the text are in the Tuscan vernacular, so a research work was done on bibliographic sources from the 1800s in order to match them with their current nomenclature.

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Despite the large number of data published in Italy on WEPs, there is no database providing a complete knowledge framework. Hence the need to design a database of the Italian alimurgic flora: AlimurgITA. Only strictly alimurgic taxa were chosen, excluding casual alien and cultivated ones.

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Background: Community-acquired pneumonia (CAP) is complicated by cardiovascular events as myocardial infarction and stroke but the underlying mechanism is still unclear. We hypothesized that endothelial dysfunction may be implicated and that endotoxemia may have a role.

Methods: Fifty patients with CAP and 50 controls were enrolled.

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Ethnopharmacological Relevance: New documentation of the uses of plants in the popular medicine of the Mainarde Mountain, a protected area of the central-southern Apennine characterised by a high floristic richness, is here reported.

Materials And Methods: Field data were collected through semi-structured and open interviews with native People between 2011 and 2014. The plants were identified and vouchers specimens were scanned to create a Virtual Herbarium.

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CD8(+) T cells specific to caspase-cleaved antigens derived from apoptotic T cells represent a principal player in chronic immune activation. Here, we found that both apoptotic epitope-specific and hepatitis C virus (HCV)-specific CD8(+) T cells were mostly confined within the effector memory (EM) or terminally differentiated EM CD45RA(+) cell subsets expressing a dysfunctional T-helper 1-like signature program in chronic HCV infection. However, apoptotic epitope-specific CD8(+) T cells produced tumor necrosis factor α and interleukin 2 at the intrahepatic level significantly more than HCV-specific CD8(+) T cells, despite both populations expressing high levels of programmed death 1 receptor.

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CD8+ T cells specific to caspase-cleaved antigens derived from apoptotic T cells (apoptotic epitopes) represent a principal player in chronic immune activation, which is known to amplify immunopathology in various inflammatory diseases. The purpose of the present study was to investigate the relationship involving these autoreactive T cells, the rheumatoid arthritis immunopathology, and the response to tumor necrosis factor-α inhibitor therapy. The frequency of autoreactive CD8+ T cells specific to various apoptotic epitopes, as detected by both enzyme-linked immunospot assay and dextramers of major histocompatibility complex class I molecules complexed with relevant apoptotic epitopes, was longitudinally analyzed in the peripheral blood of rheumatoid arthritis patients who were submitted to etanercept treatment (or other tumor necrosis factor inhibitors as a control).

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The beta-chemokines, MIP-1alpha/CCL3, MIP-1beta/CCL4, and RANTES/CCL5, play a critical role in the selective accumulation and activation of macrophages in inflamed tissues. Herein, we demonstrate that the binding of each of these beta-chemokines to their cognate receptors, CCR1 and CCR5, in either macrophages or in CCR1- or CCR5-transfected CHO cells, induced actin reorganization and the formation of lamellipodia that are characteristic of the activation of the Rho family GTPase, Rac. A dominant negative mutant of Rac, but not dominant negative mutants of RhoA or Cdc42, blocked MIP-1alpha-induced lamellipodia formation.

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Human immunodeficiency virus type 1 (HIV-1) viral protein R (Vpr) exerts multiple effects on viral and host cellular activities during viral infection, including nuclear transport of the proviral integration complex, induction of cell cycle G(2) arrest, and cell death. In this report, we show that a fission yeast chaperone protein Hsp16 inhibits HIV-1 by suppressing these Vpr activities. This protein was identified through three independent genome-wide screens for multicopy suppressors of each of the three Vpr activities.

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The aim of the study was to assess the relationship between ischemic cerebrovascular accidents (ICVAs), that is, transient ischemic attack (TIA) or stroke, and left-sided heart valve abnormalities (LHVAs) in patients with systemic lupus erythematosus (SLE). In total, 71 consecutive SLE patients were studied. At baseline, history, clinical and laboratory evaluations, as well as trans-thoracic echocardiography (TTE) were performed.

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Background: Few studies have investigated the relationship between the lack of or reduction of nocturnal blood pressure (BP) fall and left ventricular mass (LVM) in elderly individuals with isolated systolic hypertension (ISH), notwithstanding the fact that ISH is the most frequent subtype of uncontrolled hypertension and a powerful risk factor for organ damage. The aim of this study was to identify the relationship between blunted nocturnal BP fall and LVM in elderly individuals with ISH that was recently diagnosed (within 2 years) and had never been treated.

Methods: A total of 64 elderly patients with recent ISH were recruited among the outpatients of the Hypertension Unit at 1st Institute of Medicine of "La Sapienza" University in Rome, and they underwent 24-h ambulatory BP monitoring (ABPM).

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Objective: Our experience with posttraumatic and iatrogenic foreign bodies in the heart is presented and discussed along with a review of the literature on this subject.

Summary Background Data: Posttraumatic or iatrogenic foreign bodies in the heart can be treated either conservatively or surgically. Controversy exists about optimal management.

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CD40 ligand is a cell surface molecule on CD4(+) T cells that interacts with its receptor, CD40, on antigen presenting cells to mediate humoral and cellular immune responses. Our previous studies demonstrated that a trimeric soluble form of CD40L (CD40LT) activates macrophages to produce beta-chemokines and decrease CCR5 and CD4 cell surface expression, thus inducing resistance to HIV-1 infection. However, the mechanism(s) by which CD40LT mediates these effects in primary macrophages remains unclear.

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Objective: We review our results on surgical treatment of patients with stage I non-small cell lung carcinoma and we attempted to clarify the prognostic significance of some surgical--pathologic variables.

Methods: From 1993 to 1999, 667 patients received curative lung resection and complete hilar and mediastinal lymphadenectomy for non-small cell lung cancer. Of these, there were 436 Stage I disease (65%), of whom 144 T1N0 and 292 T2N0.

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Objective: To evaluate the effects of one year's treatment with beraprost, an orally active prostacyclin analogue, in patients with severe pulmonary hypertension.

Patients: 13 patients with severe pulmonary hypertension. This was primary in nine, thromboembolic in three, and caused by Eisenmenger syndrome in one.

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Background: Hypertensive patients with left ventricular hypertrophy and normal systolic function can develop congestive heart failure refractory to conventional drug therapy with digoxin, diuretic, and vasodilators.

Methods: We studied 8 patients with a history of systemic hypertension (6 females and 2 males, mean age 69+/-6 years), affected by New York Heart Association (NYHA) class IV congestive heart failure notwithstanding conventional drug therapy with digoxin, diuretic, and vasodilators. After clinical history and physical examination, blood chemistry including cardiac enzymes, arterial blood gases, chest roentgenogram, standard 12-lead ECG, and complete echocardiographic study were performed in all patients.

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Objective: Solitary fibrous tumours (SFT) of the pleura are rare tumours originated from the mesenchimal tissue underlying the mesothelial layer of the pleura. This tumours present unpredictable clinical course probably related to their histological and morphological characteristics.

Methods: Twenty-one patients affected by SFT of the pleura were referred to us for surgical resection from September 1984 to April 2000.

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Hydatidosis or echinococcosis is a parasitic disease caused by Echinococcus granulosus or E. multilocularis, which forms cysts in the liver and lung after penetrating the duodenal mucosa and entering the portal circulation. The liver and lung act as a filter but some embryos enter the general circulation and disseminate throughout the body.

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Objective: The aim of this study was to evaluate the exercise tolerance by expired gas analysis during stress test in patients with Systemic Sclerosis (SSc).

Methods: Eighteen women (mean age 48.56+/-12.

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CD40 ligand (CD40L) is a cell surface molecule of CD4(+)T cells that interacts with its receptor CD40 on antigen presenting cells to mediate thymus-dependent humoral immunity and inflammatory reactions. We report here that treating monocyte-derived macrophages (MDM) with a trimeric soluble form of CD40L (CD40LT) induced them to secrete high levels of the beta-chemokines RANTES, MIP-1alpha and MIP-1beta that are ligands for CCR5 and able to inhibit HIV-1 entry. CD40LT inhibited the entry of M-tropic HIV-1 reporter viruses.

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Objectives: To measure QT interval and QT dispersion, and to evaluate possible relationships between these measurements, heart rate variability parameters, and early myocardial involvement in patients with systemic sclerosis (SSc).

Design: Prospective study.

Setting: Tertiary care centre, University 'La Sapienza', Rome, Italy.

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Monocyte-macrophages can be productively infected by CCR5-specific, but not CXCR4-specific, HIV-1. This could be due either to the absence of this chemokine receptor in this cell lineage or to other, yet undefined cellular cofactors that modulate the coreceptor activity of the CXCR4 in these cells. To investigate the basis of macrophage tropism, we studied the expression of CCR5 and CXCR4, as well as several of the other CC chemokine receptors, on monocyte-macrophages at different stages of differentiation.

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Objective: To assess the role of late ventricular potentials (LVP) in detecting early myocardial involvement in patients with systemic sclerosis (SSc).

Methods: Seventy-seven patients with SSc (68 women, 9 men, mean age 50 +/- 13 yrs) and 33 control subjects (18 women, 15 men, mean age 46 +/- 10 yrs) underwent resting electrocardiogram (ECG), 24 h Holter monitoring, complete echocardiographic and Doppler echocardiographic examination, and signal averaged ECG at high pass setting of 40 Hz, with the low pass fixed at 250 Hz. Patients with SSc underwent resting myocardial scintigraphy and radionuclide angioventriculography.

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