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Colini Baldeschi A, Pittaluga E, Andreola F, Rossi S, Cozzolino M, Nicotera G, Sferrazza G, Pierimarchi P, Serafino A. Atrial Natriuretic Peptide Acts as a Neuroprotective Agent in in Vitro Models of Parkinson's Disease via Up-regulation of the Wnt/β-Catenin Pathway. Front Aging Neurosci 2018; 10:20. [PMID: 29449807 PMCID: PMC5799264 DOI: 10.3389/fnagi.2018.00020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 01/17/2018] [Indexed: 12/14/2022] Open
Abstract
In the last decades increasing evidence indicated a crucial role of the Wnt/β-catenin signaling in development of midbrain dopaminergic (mDA) neurons. Recently dysregulation of this pathway has been proposed as a novel pathomechanism leading to Parkinson's disease (PD) and some of the molecules participating to the signaling have been evaluated as potential therapeutic targets for PD. Atrial natriuretic peptide (ANP) is a cardiac-derived hormone having a critical role in cardiovascular homeostasis. ANP and its receptors (NPRs) are widely expressed in mammalian central nervous system (CNS) where they could be implicated in the regulation of neural development, synaptic transmission and information processing, as well as in neuroprotection. Until now, the effects of ANP in the CNS have been mainly ascribed to the binding and activation of NPRs. We have previously demonstrated that ANP affects the Wnt/β-catenin signaling in colorectal cancer cells through a Frizzled receptor-mediated mechanism. The purpose of this study was to investigate if ANP is able to exert neuroprotective effect on two in vitro models of PD, and if this effect could be related to activation of the Wnt/β-catenin signaling. As cellular models of DA neurons, we used the proliferating or RA-differentiated human neuroblastoma cell line SH-SY5Y. In both DA neuron-like cultures, ANP is able to positively affect the Wnt/β-catenin signaling, by inducing β-catenin stabilization and nuclear translocation. Importantly, activation of the Wnt pathway by ANP exerts neuroprotective effect when these two cellular systems were subjected to neurotoxic insult (6-OHDA) for mimicking the neurodegeneration of PD. Our data support the relevance of exogenous ANP as an innovative therapeutic molecule for midbrain, and more in general for brain diseases for which aberrant Wnt signaling seems to be involved.
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Affiliation(s)
| | - Eugenia Pittaluga
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Federica Andreola
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Simona Rossi
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Mauro Cozzolino
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Giuseppe Nicotera
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Gianluca Sferrazza
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Pasquale Pierimarchi
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
| | - Annalucia Serafino
- Institute of Translational Pharmacology, National Research Council of Italy, Rome, Italy
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Serafino A, Sferrazza G, Colini Baldeschi A, Nicotera G, Andreola F, Pittaluga E, Pierimarchi P. Developing drugs that target the Wnt pathway: recent approaches in cancer and neurodegenerative diseases. Expert Opin Drug Discov 2016; 12:169-186. [PMID: 27960558 DOI: 10.1080/17460441.2017.1271321] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Wnt/β-catenin signaling is an evolutionarily conserved pathway that has a crucial role in embryonic and adult life. Dysregulation of Wnt/β-catenin pathway has been associated with various diseases, including cancer and neurodegenerative disorders, including Parkinson's disease (PD). Several molecular components of the signaling have been proposed as innovative targets for cancer therapy, and very recently, some of them have been also evaluated as potential therapeutic targets for PD. Areas covered: This review focuses on the role of Wnt/β-catenin pathway in the pathogenensis of cancer and PD, examining some recent therapeutic approaches that are ongoing in preclinical and clinical studies. The possibilities that this signaling offers for diagnosis and prognosis of neoplastic diseases, and the concerns of targeting this pathway are also discussed. Expert opinion: Despite the stimulating results obtained in preclinical studies on cancer and other disease models, the clinical experience with Wnt modulators is still in its infancy, and is mainly restricted to anticancer therapy. Even with concerns of the safety of drugs targeting Wnt signaling, the attention of researchers worldwide is increasing to this issue in terms of their therapeutic potential for diseases such as PD, for which no cure exists.
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Affiliation(s)
- Annalucia Serafino
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Gianluca Sferrazza
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | | | - Giuseppe Nicotera
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Federica Andreola
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Eugenia Pittaluga
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
| | - Pasquale Pierimarchi
- a Institute of Translational Pharmacology , National Research Council (CNR) , Rome , Italy
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Serafino A, Andreola F, Pittaluga E, Krasnowska EK, Nicotera G, Sferrazza G, Sinibaldi Vallebona P, Pierimarchi P, Garaci E. Thymosin α1 modifies podosome architecture and promptly stimulates the expression of podosomal markers in mature macrophages. Expert Opin Biol Ther 2015; 15 Suppl 1:S101-16. [PMID: 26098689 DOI: 10.1517/14712598.2015.1024221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND AND AIMS The immunomodulatory activity of thymosin α1 (Tα1) on innate immunity has been extensively described, but its mechanism of action is not completely understood. We explored the possibility that Tα1-stimulation could affect the formation of podosomes, the highly dynamic, actin-rich, adhesion structures involved in macrophage adhesion/chemotaxis. METHODS The following methods were used: optical and scanning electron microscopy for analyzing morphology of human monocyte-derived macrophages (MDMs); time-lapse imaging for visualizing the time-dependent modifications induced at early times by Tα1 treatment; confocal microscopy and Western blot for analyzing localization and expression of podosome components; and Matrigel Migration Assay and zymography for testing MDM invasive ability and metalloproteinase secretion. RESULTS We obtained data to support that Tα1 could affect MDM motility, invasion and chemotaxis by promptly stimulating assembly and disassembly of podosomal structures. At very early times after its addition to cell culture medium and within 1 h of treatment, Tα1 induces modifications in MDM morphology and in podosomal components that are suggestive of increased podosome turnover. CONCLUSIONS Since impairment of podosome formation leads to reduced innate immunity and is associated with several immunodeficiency disorders, we confirm the validity of Tα1 as a potent activator of innate immunity and suggest possible new clinical application of this thymic peptide.
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Affiliation(s)
- Annalucia Serafino
- Institute of Translational Pharmacology, National Research Council of Italy , Via Fosso del Cavaliere 100, Rome , Italy
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Pala A, D'Elia P, Spampinato G, Pittaluga E, Benagiano G. Human amniotic glycodelin actively regulates changes in β-catenin immunoreactivity in cultured human umbilical vein endothelial cells (HUVEC). J Matern Fetal Neonatal Med 2011; 25:1514-6. [PMID: 21999200 DOI: 10.3109/14767058.2011.629258] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Assessment of the capacity of Glycodelin A (GdA) to modulate the aggregation of cultured human umbilical vein endothelial cells. METHODS Highly purified Glycodelin A (GdA) from late first trimester amniotic fluid has been added to cultured cells and its biological activity has been observed with immunofluorescent staining of β-catenin molecules. RESULTS GdA induces translocation of β-catenin molecules promoting cell-to-cell adhesion and formation of adherents junctions through cytoskeletal reorganization. CONCLUSION These data provide further mechanistic insight into the specificity of cell-to-cell adhesion, thus corroborating the role of GdA in promoting angiogenesis.
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Affiliation(s)
- Alessandro Pala
- Department of Gynecological-Obstetric Sciences and Urological Sciences, Sapienza University of Rome, Rome, Italy.
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Tartarini A, Pittaluga E, Marcozzi G, Testone G, Rodrigues-Pousada RA, Giannino D, Spanò L. Differential expression of saporin genes upon wounding, ABA treatment and leaf development. Physiol Plant 2010; 140:141-52. [PMID: 20536785 DOI: 10.1111/j.1399-3054.2010.01388.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Saporins are type 1 ribosome-inactivating proteins (RIPs: EC 3.2.2.22) produced in various organs of Saponaria officinalis L. Two distinct saporin types, saporin-L and saporin-S isoforms, were respectively purified from the intra- and extra-cellular fractions of soapwort leaves. The saporin-L isoform was lowly identical, differed for toxicity, molecular mass and amino acid composition from saporin-S proteins forming a new monophyletic group. Genes encoding both L- and S-type isoforms were cloned from leaf-specific cDNA library; the encoded products included the N-terminal diversity observed by protein sequencing and showed compatible weights with those from mass spectra. These genes were intron-less belonging to small gene families. Reverse transcription polymerase chain reaction/quantitative reverse transcription polymerase chain reaction experiments evidenced their differential expression during leaf development, wounding and abscisic acid treatment. These results suggest that the saporin-L and -S proteins may play diversified roles during stress responses.
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MESH Headings
- Abscisic Acid/pharmacology
- Amino Acid Sequence
- Electrophoresis, Polyacrylamide Gel
- Gene Expression Profiling
- Gene Expression Regulation, Developmental/drug effects
- Gene Expression Regulation, Plant/drug effects
- Molecular Sequence Data
- Phylogeny
- Plant Growth Regulators/pharmacology
- Plant Leaves/genetics
- Plant Leaves/growth & development
- Plant Leaves/metabolism
- Plant Proteins/genetics
- Plant Proteins/metabolism
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Ribosome Inactivating Proteins, Type 1/classification
- Ribosome Inactivating Proteins, Type 1/genetics
- Ribosome Inactivating Proteins, Type 1/metabolism
- Saponaria/genetics
- Saponaria/growth & development
- Saponaria/metabolism
- Saporins
- Sequence Homology, Amino Acid
- Stress, Mechanical
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Affiliation(s)
- Andrea Tartarini
- Department of Basic and Applied Biology, University of L'Aquila, L'Aquila, Italy.
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Pittaluga E, Costa G, Krasnowska E, Brunelli R, Lundeberg T, Porpora MG, Santucci D, Parasassi T. More than antioxidant: N-acetyl-L-cysteine in a murine model of endometriosis. Fertil Steril 2010; 94:2905-8. [PMID: 20655527 DOI: 10.1016/j.fertnstert.2010.06.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Revised: 06/14/2010] [Accepted: 06/14/2010] [Indexed: 10/19/2022]
Abstract
N-acetyl-L-cysteine exerts a complex action on endometrial cells, involving regulation of gene expression and protein activity and location, all converging into a decreased proliferation and a switch toward a differentiating, less invasive, and less inflammatory phenotype. Also considering the lack of undesired side effects, including unaffected fertility potential, this suggests a beneficial use of NAC in endometriosis clinical treatment.
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Affiliation(s)
- Eugenia Pittaluga
- Institute of Neurobiology and Molecular Medicine, National Research Council, Rome, Italy
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Parasassi T, Brunelli R, Costa G, De Spirito M, Krasnowska E, Lundeberg T, Pittaluga E, Ursini F. Thiol redox transitions in cell signaling: a lesson from N-acetylcysteine. ScientificWorldJournal 2010; 10:1192-202. [PMID: 20602078 PMCID: PMC5763934 DOI: 10.1100/tsw.2010.104] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The functional status of cells is under the control of external stimuli affecting the function of critical proteins and eventually gene expression. Signal sensing and transduction by messengers to specific effectors operate by post-translational modification of proteins, among which thiol redox switches play a fundamental role that is just beginning to be understood. The maintenance of the redox status is, indeed, crucial for cellular homeostasis and its dysregulation towards a more oxidized intracellular environment is associated with aberrant proliferation, ultimately related to diseases such as cancer, cardiovascular disease, and diabetes. Redox transitions occur in sensitive cysteine residues of regulatory proteins relevant to signaling, their evolution to metastable disulfides accounting for the functional redox switch. N-acetylcysteine (NAC) is a thiol-containing compound that is able to interfere with redox transitions of thiols and, thus, in principle, able to modulate redox signaling. We here review the redox chemistry of NAC, then screen possible mechanisms to explain the effects observed in NAC-treated normal and cancer cells; such effects involve a modification of global gene expression, thus of functions and morphology, with a leitmotif of a switch from proliferation to terminal differentiation. The regulation of thiol redox transitions in cell signaling is, therefore, proposed as a new tool, holding promise not only for a deeper explanation of mechanisms, but indeed for innovative pharmacological interventions.
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Krasnowska EK, Pittaluga E, Brunati AM, Brunelli R, Costa G, De Spirito M, Serafino A, Ursini F, Parasassi T. N-acetyl-l-cysteine fosters inactivation and transfer to endolysosomes of c-Src. Free Radic Biol Med 2008; 45:1566-72. [PMID: 18845245 DOI: 10.1016/j.freeradbiomed.2008.09.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2008] [Revised: 09/05/2008] [Accepted: 09/07/2008] [Indexed: 12/01/2022]
Abstract
The non-receptor-protein tyrosine kinase c-Src is overexpressed and activated in a large number of human cancers, in which it is associated with tumor development and progression. Canonical regulation takes place by means of an alternative phosphorylation of tyrosine residues -- Tyr419 for activation and Tyr530 for inactivation. An independent redox regulation mechanism, involving cysteine residues, has also been proposed, in which oxidation activates the enzyme. Here we present a kinetic analysis of the effect of N-acetyl-l-cysteine (NAC) on c-Src, demonstrating that reduction reverts the oxidation-driven activation. In cancer cells, we show that NAC treatment produces an increase in specifically labeled reduced thiols of c-Src cysteines, thus confirming a redox transition. In addition to a decrease in Tyr419 phosphorylation, this leads to a massive shift of c-Src from plasma membranes -- where its active form is located -- to endolysosomal compartments. With the objective of deciphering the complex issue of c-Src regulation and of devising new strategies to revert its activation in cancers, redox regulation thus emerges as a promising area for study.
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Affiliation(s)
- Ewa K Krasnowska
- Istituto di Neurobiologia e Medicina Molecolare, CNR, Rome, Italy
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Parasassi T, Brunelli R, Bracci-Laudiero L, Greco G, Gustafsson AC, Krasnowska EK, Lundeberg J, Lundeberg T, Pittaluga E, Romano MC, Serafino A. Differentiation of normal and cancer cells induced by sulfhydryl reduction: biochemical and molecular mechanisms. Cell Death Differ 2005; 12:1285-96. [PMID: 15920536 DOI: 10.1038/sj.cdd.4401663] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
We examined the morphological, biochemical and molecular outcome of a nonspecific sulfhydryl reduction in cells, obtained by supplementation of N-acetyl-L-cysteine (NAC) in a 0.1-10 mM concentration range. In human normal primary keratinocytes and in colon and ovary carcinoma cells we obtained evidences for: (i) a dose-dependent inhibition of proliferation without toxicity or apoptosis; (ii) a transition from a proliferative mesenchymal morphology to cell-specific differentiated structures; (iii) a noticeable increase in cell-cell and cell-substratum junctions; (iv) a relocation of the oncogenic beta-catenin at the cell-cell junctions; (v) inhibition of microtubules aggregation; (vi) upregulation of differentiation-related genes including p53, heat shock protein 27 gene, N-myc downstream-regulated gene 1, E-cadherin, and downregulation of cyclooxygenase-2; (vii) inhibition of c-Src tyrosine kinase. In conclusion, a thiol reduction devoid of toxicity as that operated by NAC apparently leads to terminal differentiation of normal and cancer cells through a pleiade of converging mechanisms, many of which are targets of the recently developed differentiation therapy.
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Affiliation(s)
- T Parasassi
- Istituto di Neurobiologia e Medicina Molecolare, CNR, Viale Marx 15-43, 00137 Roma, Italy.
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Pittaluga E, Poma A, Tucci A, Spanò L. Expression and characterisation in E. coli of mutant forms of saporin. J Biotechnol 2005; 117:263-6. [PMID: 15862356 DOI: 10.1016/j.jbiotec.2005.01.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2004] [Revised: 01/19/2005] [Accepted: 01/29/2005] [Indexed: 11/29/2022]
Abstract
In the present communication, we report on the expression and characterisation in Escherichia coli of mutant derivatives of saporin, a type 1 ribosome-inactivating protein from Saponaria officinalis L. The effects of substitution of Glu 176 with Lys and those of deletion of 19 amino acids at the C-terminal were evaluated both in vivo, testing the influence of expressed proteins on bacterial growth and in vitro measuring their N-glycosidase and supercoiled DNA relaxation activities. Results indicate that both modifications of the wild-type protein abolish its toxicity to bacterial cells and impair its enzymatic activity on polynucleotide substrates, either RNA or DNA.
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Affiliation(s)
- Eugenia Pittaluga
- Department of Basic and Applied Biology, University of L'Aquila, Via Vetoio Coppito, 67100 L'Aquila, Italy
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Poma A, Spanò L, Pittaluga E, Tucci A, Palladino L, Limongi T. Interactions between saporin, a ribosome-inactivating protein, and DNA: a study by atomic force microscopy. J Microsc 2005; 217:69-74. [PMID: 15655064 DOI: 10.1111/j.0022-2720.2005.01436.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Saporins are enzymes belonging to the PNAG class (polynucleotide: adenosine glycosidase), plant enzymes commonly known as ribosome-inactivating proteins (RIP), as a result of their property of irreversibly damaging eukaryotic ribosomes. Direct imaging with tapping-mode atomic force microscopy (AFM) has been used to study pGEM-4Z plasmid DNA binding to the saporin-SO6 (isoform from Saponaria officinalis seeds). Saporin wrapped the plasmidic DNA, and distribution of the enzyme molecules along the DNA chain was markedly variable; plasmid digested with saporin-SO6 appeared fragmented or topologically modified. The supercoiled DNA strands were cleaved, giving rise to a linearized form and to relaxed forms. Electrophoretic analysis of the effect of standard preparations of saporin-SO6 on pGEM-4S confirmed the presence of DNA strand-cleaving activity.
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Affiliation(s)
- A Poma
- Department of Basic and Applied Biology, University of L'Aquila, Via Vetoio, Coppito, L'Aquila, Italy
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Abstract
In this study, chromosomal damage induced in vitro by lead acetate in human melanoma cells (B-Mel) was evaluated using the cytokinesis-blocked micronucleus assay and sister chromatid exchange (SCE) analysis. Lead acetate (10-6, 10-5 and 10-3 mM) induced micronuclei and SCE formation in a dose-dependent manner. Treated cells showed a decrease in cell viability but not concomitant cell death by apoptosis (lead acetate failed to induce internucleosomal DNA fragmentation at any of the doses tested). One important observation emerging from this study was that low-level lead exposure in vitro is able to induce significant cytogenetic damage in human melanoma cells, indicating an increased sensitivity of B-Mel cells to lead acetate.
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Affiliation(s)
- Anna Poma
- Department of Basic and Applied Biology, Faculty of Sciences, University of L'Aquila, Italy. poma@univaq@it
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Sacchetti G, Inglese E, Bongo AS, Aina F, Brambilla M, Baroli A, Cernigliaro C, Dellavesa P, Pittaluga E, Rudoni M. Detection of moderate and severe coronary artery stenosis with technetium-99m tetrofosmin myocardial single-photon emission tomography. Eur J Nucl Med 1997; 24:1230-6. [PMID: 9323263 DOI: 10.1007/s002590050146] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The aim of this study was to determine the diagnostic accuracy of technetium-99m tetrofosmin myocardial imaging for the localization of coronary artery stenoses of different degrees of severity. Stress-rest single-photon emission tomography (SPET) was performed on separate days in 80 patients (64 males, 16 females; mean age 61 years; 43 patients with previous myocardial infarction; 18 patients with pharmacological stress), within 6 months of coronary angiography. Scintigraphic images were blindly and independently evaluated by three observers. Coronary stenosis was defined as a >50% narrowing in luminal diameter; severe stenosis was defined as a proximal stenosis of >75% or a peripheral stenosis of >90%. Coronary angiography revealed normal coronary arteries or insignificant coronary stenosis in 13 patients and significant coronary stenoses in 67 patients. The sensitivity and specificity of 99mTc-tetrofosmin SPET in respect of severely stenosed vessels were, respectively, 80% and 65% for the left anterior descending artery (LAD), 100% and 46% for the right coronary artery (RCA) and 58 and 78% for the left circumflex artery (LCx) territories. Considering all the significantly stenosed vessels, a significant decrease in sensitivity was observed for LAD territories (to 59%, P=0.05), and a nonsignificant decrease for RCA (88%) and LCx (47%) territories while specificity values remained essentially unchanged. No significant changes in sensitivity or specificity were observed when regions with previous myocardial infarction were excluded. In conclusion, the sensitivity of 99mTc-tetrofosmin SPET for the localization of individual stenosed vessels is only moderate when all significant stenoses are considered, but the ability of this technique to predict the location of severe coronary artery stenoses seems satisfactory, with the exception of the low specificity in respect of RCA territories.
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Affiliation(s)
- G Sacchetti
- Department of Nuclear Medicine, Azienda Ospedaliera "Maggiore della Carità", Novara, Italy
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García H, Pittaluga E, Gallo A. [Measles-pneumonia in the newborn infant]. Rev Chil Pediatr 1980; 51:311-6. [PMID: 7209007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Amico G, Pasquali F, Pittaluga E. [Pickwickian-narcoleptic disorders after brain concussion]. Riv Sper Freniatr Med Leg Alien Ment 1972; 96:74-85. [PMID: 4337776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Marobbio C, Pittaluga E. [Anatomo-clinical considerations on a rare case of atrophic encephalopathy of the presenile age with biochemical signs of hypoparathyroidism]. Biol Lat 1968; 21:605-20. [PMID: 5743651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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17
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Pittaluga E, Giordano R, Mocchetti E. [Central neurologic manifestations during herpes zoster infection. Anatomo-clinical study]. Riv Otoneurooftalmol 1968; 43:497-511. [PMID: 5737892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Castellotti V, Pittaluga E. [Observations on the electroencephalographic aspects of induced and spontaneous sleep in cerebral atrophies]. Sist Nerv 1966; 18:371-82. [PMID: 5299196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Castellotti V, Pittaluga E, Rovetta P. [Study of the nyctohemeral cycles of sleep in narcolepsy]. Sist Nerv 1966; 18:358-70. [PMID: 5985486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Castellotti V, Pittaluga E. [Peripheral nerve diseases in chronic hypoglycemic states]. Osp Psichiatr 1966; 34:301-16. [PMID: 4299308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Castellotti V, Pittaluga E. [EEG study of nocturnal spontaneous sleep in depressive states]. Riv Neurol 1966; 36:417-36. [PMID: 5968446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Castellotti V, Cernibori A, Pittaluga E. [Observations on the electroencephalographic pattern of the 6-14 c./sec. positive spikes]. Sist Nerv 1966; 18:82-99. [PMID: 5929067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Castellotti V, Pittaluga E, Rovetta P. [Observatis on the sigificance of some pathological changes of electroencephalographic rhythms in sleep]. Riv Neurol 1966; 36:217-25. [PMID: 5944702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Castellotti V, Pittaluga E. [Study of modifications during spontaneous sleep of typical electroencephalographic pictures due to a subacute sclerosing leukoencephalitis]. Riv Patol Nerv Ment 1965; 86:766-84. [PMID: 5874899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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25
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Castellotti V, Pittaluga E. [Considerations on a case of Parsonage and Turner neuralgic amyotrophy]. Acta Neurol (Napoli) 1965; 20:660-74. [PMID: 5864655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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26
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Castellotti V, Pittaluga E. [Electroencephalographic data during spontaneous sleep in "morpheic" epilepsy]. Riv Neurol 1965; 35:568-87. [PMID: 5880626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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27
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Brusa G, Pittaluga E. [Research on personality in female alcoholism]. Riv Patol Nerv Ment 1965; 86:513-30. [PMID: 5870835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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28
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Castellotti V, Pittaluga E. [Electroencephalographic observations in cases with lesions of the brain stem, of vascular origin]. Rass Neuropsichiatr 1965; 19:45-62. [PMID: 5880422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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