Chiara Foglieni

Chiara Foglieni
San Raffaele Scientific Institute | OSR

PhD

About

78
Publications
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Introduction
Chiara Foglieni currently works as researcher at Ospedale di San Raffaele Istituto di Ricovero e Cura a Carattere Scientifico. Chiara does research in Cardiovascular Biology and Virology.

Publications

Publications (78)
Article
Full-text available
The difficulty to unambiguously identify the various subsets of mononuclear phagocytes (MNPs) of the intestinal lamina propria has hindered our understanding of the initial events occurring after mucosal exposure to HIV-1. Here, we compared the composition and function of MNP subsets at steady-state and following ex vivo and in vivo viral exposure...
Article
In vitro cell cultures represent a widespread methodology for pathophysiology studies with a high benefit/cost ratio. We have developed and are validating TToP, a novel, versatile, and scalable culture system allowing compartmentalized cell/tissue cultures with the aim of mimicking the human pathophysiological microenvironment of tissue barriers.
Article
A novel device to analyze the correlation between hydrodinamic stimuli and atherosclerosis advancement.
Article
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Atherothrombosis exposes vascular components to blood. Currently, new antithrombotic therapies are emerging. Herein we investigated thrombogenesis of human arteries with/without atherosclerosis, and the interaction of coagulation and vascular components, we and explored the anti-thrombogenic efficacy of blockade of the P2X purinoceptor 7 (P2X7). A...
Article
Aims Coronary microvascular dysfunction (CMD) represents a powerful independent predictor of adverse outcome in hypertrophic cardiomyopathy (HCM). No treatment for CMD exists. The angiotensin-converting enzyme (ACE)-inhibitor perindopril improves myocardial blood flow (MBF) in animal models of cardiac hypertrophy and in hypertensive patients. Whet...
Article
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Background Hypertrophic cardiomyopathy (HCM) is characterized by severe alterations of cardiac architecture and function involving cardiomyocytes (CM) and coronary microvessels (MV). Coronary microvascular dysfunction, cardiomyocyte hypertrophy and disarray, sarcomeric alterations and interstitial fibrosis are HCM features. The transcriptome profil...
Article
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Hypertrophic cardiomyopathy (HCM) is the most common genetic disease of the myocardium associated to mutations in sarcomeric genes, but the link between genotype and phenotype remains poorly understood. Magnetic resonance spectroscopy studies have demonstrated impaired cardiac energetics in patients with HCM, and altered mitochondria were described...
Article
Background Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiomyopathy, heterogeneous in phenotype and clinical course. The genotype-phenotype relationship and associated molecular mechanisms are still incompletely understood. In the HCM milieu, increased energy cost of force production, impairing performance and mitochondrial funct...
Article
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Aim of this study was to characterize the effects of oral trehalose administration (2%w/v) on healthspan in old mice. Trehalose was administered in drinking water for 1 month to male and female C57Bl/6N mice aged 25-months. After behavioral phenotyping (grip strength, beam walking and rotarod tests), autophagy (LC3II/actin) and oxidative stress wer...
Article
Background: Vascular smooth muscle cells exhibit phenotypic plasticity in response to microenvironmental stimuli and contribute to vascular remodelling through mechanisms only partially understood. In atherosclerosis, P2X-purinoceptor7 (P2X7) has been related to interleukin-1β (IL-1β) and metalloproteinase 9 (MMP9). The hypoxia-inducible factor-1a...
Article
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In atherosclerosis, matrix metallopeptidases (MMPs) contribute to plaque rupture through weakening of the fibrous cap. Pleiotropic P2X purinoceptor 7 (P2X7), expressed in the carotid plaque (PL), is involved in interleukin 1 beta (IL-1β) release that may influence MMP9 generation, thus their possible modulation through acting on P2X7 was investigat...
Article
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Common features of immune-metabolic and inflammatory diseases such as metabolic syndrome, diabetes, obesity and cardiovascular diseases are an altered gut microbiota composition and a systemic pro-inflammatory state. We demonstrate that active immunization against the outer membrane protein of bacteria present in the gut enhances local and systemic...
Article
Left atrial (LA) enlargement, a compensatory mechanism in chronic mitral regurgitation (MR) increasing the risk of atrial fibrillation (AF) and predictive of cardiac events, involves structural alterations. We characterized LA features in patients in sinus rhythm with severe degree of MR, similar degrees of left ventricular remodeling but divergent...
Article
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Atherosclerosis is a dynamic progressive disease of the large arteries characterized by accumulation of lipids, inflammatory and smooth muscle cells (SMCs) and extracellular matrix. In situ growth or embolization of arterial thrombi following a plaque rupture may lead to acute coronary syndrome and stroke. Fibrous cap rupture may expose thrombogeni...
Article
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Atherosclerotic plaque rupture with thrombosis is a major cause of cardiovascular events. The natural history of plaque progression is still unknown and the plaque destabilization unpredictable. We have recently suggested that P2X7 purinergic receptor expressed in carotid plaques (CP) might play a role a role in the pathogenesis of atherosclerosis....
Article
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The gastrointestinal tract is a principal route of entry and site of persistence of human immunodeficiency virus type 1 (HIV-1). The intestinal mucosa, being rich of cells that are the main target of the virus, represents a primary site of viral replication and CD4(+) T-cell depletion. Here, we show both in vitro and ex vivo that HIV-1 of R5 but no...
Article
Percutaneous coronary intervention for acute myocardial infarction carries the risk of distal embolization ([1][1]). The MGuard (InspireMD, Tel Aviv, Israel) is a mesh-covered bare-metal stent developed as a plaque-trapping device to treat thrombotic lesions ([Fig. 1][2]). ![Figure 1][3]
Article
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Coronary atherosclerosis, the main condition predisposing to acute myocardial infarction, has an inflammatory component caused by stimuli that are yet unknown. We molecularly investigated the nature of the immune response within human coronary lesion in four coronary plaques obtained by endoluminal atherectomy from four patients. We constructed pha...
Data
Combinatorial phage-display Fab libraries characteristics. Library extension and sequence analyses of randomly sampled clones. The most represented IGHV or IGKV genes is also shown. The average percentage divergence from germline sequences for each HC and LC were defined on the basis of nucleotide changes in the IGHV or IGKV sequences and the avera...
Data
Expression and purification of IgG7816 by baculovirus in insect cells. (DOC)
Data
Confocal microscopy with 7816Fab-FLAG on human atherosclerotic carotids: negative controls. A representative field from a plaque, which failed to display any immunoreactivity with 7816Fab-FLAG (A–C) stained with multiple labelling vs. 7816Fab-FLAG, TAGLN and CD68 is shown. Negative control without any of the primary antibodies, but all the secondar...
Data
Confocal microscopy with 7816Fab-FLAG on human atherosclerotic carotid plaque and on CD14+ fibrocytes: fibrocyte markers. Spindle and elongated CD14+ cells cultured for 4 days in the absence of serum express CD45/CD68 (A), CD45/Collagen type I/TAGLN (b), showing a fibrocyte phenotype. DAPI stains nuclei, scale bars indicate the magnification. (TIF)
Data
Histological, clinical and functional carotid plaque features. (DOC)
Data
Immunofluorescence and mmunohistochemistry on human atherosclerotic carotid and coronary plaques with 7816Fab-FLAG and not-correlated E8Fab-FLAG. Representative carotid plaque serial sections (A–C) display the presence of signal (brown) with 7816Fab-FLAG (A) in several cells of the vessel wall by Immunoperoxidase, but its absence either with its om...
Data
Histology and Confocal microscopy on human atherosclerotic carotid. Figure S2. Histology and Confocal microscopy on human atherosclerotic carotid Haematoxylin & eosin (panel A, upper image) and Movat1s (panel A, bottom image) stains of the carotid plaque displayed in B–I confocal microscopy images. 7816Fab-FLAG+ localized the positive cells nearby...
Data
Reactivity of representative Fabs from all patients with TAGLN in ELISA. ELISA with all representative Fabs on human transgelin. Reactivity against bovine serum albumin (BSA) used as blocking antigen, is also shown. The reconstructed full IgG of Fab7816 was also tested (IgG7816). Two unrelated negative Fabs were used as negative controls. (TIFF)
Data
Germline reversion of Fab 7816. (DOC)
Data
Immunohistochemistry on human atherosclerotic carotid with 7816Fab-FLAG and immunofluorescence with monoclonal anti-TAGLN. Immunoperoxidase shows a region of the vessel wall (A) with 7816Fab-FLAG+ cells (brown) (B), corresponding by immunofluorescence on serial sections to an area rich in TAGLN smooth muscle cells (green) (C). Either Haematoxylin o...
Data
Clinical characteristics of patients from which coronary samples were obtained. NSTEMI: non-ST segment elevation myocardial infarction; UA = unstable angina with negative troponin; LVEF: left ventricular ejection fraction. 1-D one vessel disease, 2-D = two vessels disease, 3-D = three vessels disease. Cx = circumflex artery, OM = obtuse marginal ar...
Article
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Ozonated autohemotherapy (OA) has been previously successfully used in the treatment of patients affected by peripheral occlusive arterial disease. OA consists of an intrafemoral reinfusion of autologous blood previously exposed to a mixture of oxygen/ozone (O2/O3). This study analyzes the effects of OA in protecting rat kidney from ischemia and is...
Conference Paper
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Background / Purpose: HIV-1 variants using chemokine receptor type 5 (CCR5) as a coreceptor (R5 strain) are preferentially transmitted via a sexual or mother-to-child infection route. Previous studies have implied mechanisms play a role at mucosal level.Here, we tested the hypothesis that HIV-1 can gain access into the intestinal mucosa by induci...
Article
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Micronutrient inadequate intake is responsible of pathological deficiencies and there is a need of assessing the effectiveness of metal supplementation, frequently proposed to rebalance poor diets. Manganese (Mn) is present in many enzymatic intracellular systems crucial for the regulation of cell metabolism, and is contained in commercially availa...
Article
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Endothelial mitochondria, the major site of ATP generation, modulate the intracellular dynamics of reactive oxygen species (ROS), which, in turn, control endothelial function. Adequate oxygen (O(2)) supply is required by endothelial cells (EC). Both hypoxia and hyperoxia may favor the overproduction of ROS leading to oxidative stress, mitochondrial...
Article
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The purpose of this study was to test the hypothesis that specific epicardial adipose tissue (EAT) proinflammatory adipokines might be implicated in acute coronary syndrome (ACS). We compared expression and protein secretion of several EAT adipokines of male ACS with those of matched stable coronary artery disease (CAD) patients and controls with a...
Article
To characterize in-stent restenosis after the implantation of sirolimus-eluting stents (SES), paclitaxel-eluting stents (PES), tacrolimus-eluting stents (TES), and zotarolimus-eluting stents (ZES), 25 patients treated with drug-eluting stents (DES; 9 PES, 10 SES, 4 TES, and 2 ZES) and 19 with bare-metal stents (BMS) underwent directional coronary a...
Article
The proteasome inhibitor Bortezomib has been approved for the treatment of relapsed/refractory multiple myeloma (MM), thanks to its ability to induce MM cell apoptosis. Moreover, Bortezomib has antiangiogenic properties. We report that endothelial cells (EC) exposed to Bortezomib undergo death to an extent that depends strictly on their activation...
Article
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Kaposi's Sarcoma (KS) is an angioproliferative disease associated with human herpesvirus 8 (HHV-8) infection. We have characterized the morphologic and phenotypic modifications of HUVEC in a model of productive HHV-8 infection. HHV-8 replication was associated with ultra-structural changes, flattened soma and a loss of marginal folds and intercellu...
Article
The T-cell receptor zeta (TCR zeta)-chain is a master sensor and regulator of lymphocyte responses. Loss of TCR zeta-chain expression has been documented during infectious and inflammatory diseases and defines a population of effector T cells (TCR zeta(dim) T cells) that migrate to inflamed tissues. We assessed the expression and functional correla...
Article
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Acute coronary syndromes (ACS) are characterized by multiple unstable coronary plaques and elevated circulating levels of inflammatory biomarkers. The endothelium of internal mammary arteries (IMA), which are atherosclerosis resistant, is exposed to proinflammatory stimuli as vessels that develop atherosclerosis. Our study investigated the IMA endo...
Article
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Unlabelled: A growing body of evidence suggests that chromogranin A (CgA), a secretory protein released by many neuroendocrine cells and frequently used as a diagnostic and prognostic serum marker for a range of neuroendocrine tumors, is a precursor of several bioactive fragments. This work was undertaken to assess whether the N-terminal fragment...
Article
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Angiogenesis is a complex, orchestrated process that plays a critical role in several conditions and has special relevance in the progression of cancer. Hypoxia is the major stimulus for angiogenesis, and hypoxia-inducible transcription factor-1 alpha (HIF-1alpha) is its key mediator. We set up a novel in vitro model of HIF-1alpha up-regulation by...
Article
HHV-6 is the etiologic agent of exanthem subitum, a pediatric illness that may be associated with clinical and laboratory signs of central nervous system involvement. The absence of suitable experimental models has so far hampered the elucidation of the mechanisms of HHV-6-mediated neural cell damage. Recently, the growing knowledge in neurobiology...
Article
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Chelation therapy with sodium edetate (EDTA) improved renal function and slowed the progression of renal insufficiency in patients subjected to lead intoxication. This study was performed to identify the underlying mechanism of the ability of EDTA treatment to protect kidneys from damage. The effects of EDTA administration were studied in a rat mod...
Article
To elucidate the role of human herpesvirus (HHV)-6 and -7 (HHV-7) in pityriasis rosea (PR), we measured their DNA load in plasma, peripheral blood mononuclear cells (PBMC), and tissues using a calibrated quantitative real-time PCR assay. We also studied HHV-6- and HHV-7-specific antigens in skin by immunohistochemistry and anti-HHV-7 neutralizing a...
Article
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We previously showed that local use of periodate oxidized ATP (oATP, a selective inhibitor of P2X7 receptors for ATP) in rat paw treated with Freund's adjuvant induced a significant reduction of hyperalgesia Herein we investigate the role of oATP, in the rat paws inflamed by carrageenan, which mimics acute inflammation in humans. Local, oral or int...
Article
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Elevated levels of circulating chromogranin A (CgA), a protein stored in the secretory granules of many neuroendocrine cells and neurons, have been detected in the blood of patients with neuroendocrine tumors or heart failure. The pathophysiological role of increased secretion of CgA is unknown. Using mice bearing subcutaneous tumors genetically en...
Article
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In the present paper we show that transendothelial migration of a subset of CD14(+) circulating leukocytes, coexpressing the CD34 precursor marker, leads to protection from the apoptosis that follows growth factor(s) withdrawal. The resistance of this cell subset to starvation-induced programmed cell death, lasting from 48 to 96 hours, is accompani...
Article
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Chromogranin A (CgA), a secretory protein expressed by many neuroendocrine cells, has been recognized as a useful tissue and serum marker of neuroendocrine tumors. To investigate the effect of CgA secretion on neoplastic morphogenesis and progression, we have transfected mouse RMA lymphoma and TS/A adenocarcinoma cells with the cDNA encoding human...
Article
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In recent years increasing attention has been given to apoptosis for its role in pathologic, organogenetic and homeostatic phenomena. Acridine orange (AO), Hoechst 33342 (HO) and propidium iodide (PI) are among the most used fluorescent dyes used to analyse cell culture viability. In fact, they respectively show specificity for living, apoptotic an...
Article
Successful beta-cell replacement therapy in insulin-dependent (type I) diabetes is hindered by the scarcity of human donor tissue and by the recurrence of autoimmune destruction of transplanted beta cells. Availability of non-beta cells, capable of releasing insulin and escaping autoimmune recognition, would therefore be important for diabetes cell...
Article
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Chinese hamster ovary (CHO) cells are widely employed to produce glycosylated recombinant proteins. Our group as well as others have demonstrated that the sialylation defect of CHO cells can be corrected by transfecting the alpha2,6-sialyltransferase (alpha2,6-ST) cDNA. Glycoproteins produced by such CHO cells display both alpha2,6- and alpha2,3-li...
Article
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Gene transfer to the kidney can be achieved with various DNA vectors, resulting in transgene expression in glomerular or tubular districts. Controlling transgene destination is desirable for targeting defined renal cells for specific therapeutic purposes. We previously showed that injection of polyplexes into the rat renal artery resulted in transf...