1,138 results on '"Polcaro A"'
Search Results
2. rs822336 binding to C/EBPβ and NFIC modulates induction of PD-L1 expression and predicts anti-PD-1/PD-L1 therapy in advanced NSCLC
- Author
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Polcaro, Giovanna, Liguori, Luigi, Manzo, Valentina, Chianese, Annalisa, Donadio, Giuliana, Caputo, Alessandro, Scognamiglio, Giosuè, Dell’Annunziata, Federica, Langella, Maddalena, Corbi, Graziamaria, Ottaiano, Alessandro, Cascella, Marco, Perri, Francesco, De Marco, Margot, Col, Jessica Dal, Nassa, Giovanni, Giurato, Giorgio, Zeppa, Pio, Filippelli, Amelia, Franci, Gianluigi, Piaz, Fabrizio Dal, Conti, Valeria, Pepe, Stefano, and Sabbatino, Francesco
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- 2024
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3. Metabolomics of Withania somnifera L. extracts by an integrated LC-MS and NMR approach and evaluation of their tyrosinase inhibitory activity
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Polcaro, Luciana Maria, Cerulli, Antonietta, Masullo, Milena, and Piacente, Sonia
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- 2025
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- View/download PDF
4. Checkpoint based immunotherapy in non-small cell lung cancer: a real-world retrospective study
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Luigi Liguori, Gabriele Giorgio, Giovanna Polcaro, Valentina Pagliara, Domenico Malandrino, Francesco Perri, Marco Cascella, Alessandro Ottaiano, Valeria Conti, Alberto Servetto, Roberto Bianco, Stefano Pepe, and Francesco Sabbatino
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biomarker ,ICI ,immunotherapy ,NSCLC ,PD-1 ,PD-L1 ,Immunologic diseases. Allergy ,RC581-607 - Abstract
IntroductionImmune checkpoint inhibitor (ICI)-based immunotherapy targeting programmed cell death 1 (PD-1) or its ligand 1 (PD-L1) has radically changed the management of many types of solid tumors including non-small cell lung cancer (NSCLC). Many clinical trials have demonstrated that ICIs improve the survival and the quality of life of patients with advanced non oncogene NSCLC as compared to standard therapies. However, not all patients achieve a clinical benefit from this immunotherapeutic approach. As a result, real-word validation of the efficacy and safety of ICIs can be useful for defining potential predictive biomarkers as well as for overcoming limitations linked to clinical trial restrictions.MethodsWe retrospectively retrieved the clinical data of patients with advanced non oncogene NSCLC treated with ICIs (anti-PD-1 or anti-PD-L1) as single agent or in combination with chemotherapy at “San Giovanni di Dio e Ruggi D’Aragona” University Hospital from January 2016 to December 2023. Potential correlations between clinical-pathological characteristics and safety or survival outcomes were investigated employing the Fisher’s exact test, Mann-Whitney U test, the Kruskal-Wallis method and log-rank test, as applicable. Multivariate survival analyses were performed using the Cox proportional hazards model.ResultsClinical data of 129 patients were retrieved. At a median follow-up of 29.70 months, progression-free survival (PFS) and overall survival (OS) were 5.27 months and 8.43 months, respectively. At the multivariate analyses, smoking status, presence of bone metastases and the occurrence of immune-related adverse events (irAEs) were correlated with both PFS and OS. Moreover, patients treated with anti-PD-1-based therapy achieved an increased clinical benefit than those treated with anti-PD-L1.DiscussionIn this study we described our real-world experience of ICIs for the treatment of patients with advanced non oncogene NSCLC. A decreased OS in our study population was reported as compared to that of patients included in the clinical trials. Noteworthy, correlations between clinical-pathological characteristics and survival outcomes emerged. Nevertheless, the potential integration of clinical-pathological characteristics as predictive biomarkers in more accurate therapeutic algorithms as well as the underlying biological mechanisms should be further validated in ad hoc studies.
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- 2024
- Full Text
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5. Effects of green extraction methods on the chemical profile of Schisandra chinensis fruit extracts and on their tyrosinase inhibitory activity
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Polcaro, Luciana Maria, Masullo, Milena, and Piacente, Sonia
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- 2024
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6. Spinacia oleracea L. Baby Leaves as a Source of Bioactive Principles: The Chemical Profiling of Eco-Sustainable Extracts by Using LC-ESI/HRMS- and 1H NMR-Based Metabolomics
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Antonietta Cerulli, Luciana Maria Polcaro, Milena Masullo, and Sonia Piacente
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baby leaves ,Spinacia oleracea L. ,eco-sustainable extractions ,1H NMR and HRMS-based metabolomics ,20-hydroxyecdysone ,multivariate data analysis ,Chemical technology ,TP1-1185 - Abstract
Spinacia oleracea L. cultivar platypus leaves are identified as a functional food due to their nutrient composition which promotes health beyond basic nutrition. Considering the increasing use of food supplements, S. oleracea baby leaves have been extracted by maceration, solid–liquid dynamic extraction (SLDE)-Naviglio, and ultrasound-assisted extraction (UAE) using EtOH and EtOH:H2O mixtures. The analysis of the extracts by using LC-ESI/HRMSMS revealed 42 compounds (flavonoids, polar lipid derivatives, and 20-hydroxyecdysone), along with primary metabolites, detected by NMR analysis. A principal component analysis (PCA) of LC-ESI/HRMS and NMR data was performed, revealing how 20-hydroxyecdysone and flavonoids, the specialized metabolites mainly responsible for the biological activity of S. oleracea leaves, occurred in the highest amount in the EtOH and EtOH:H2O (70:30, v/v) extracts obtained by SLDE-Naviglio extraction. 20-hydroxyecdysone was also quantified in all the extracts via LC-ESI/QTrap/MS/MS using the Multiple Reaction Monitoring (MRM) method. The EtOH extracts obtained by SLDE-Naviglio and maceration showed the highest content (82.16 and 81.27 mg/g extract, respectively). The total phenolic content (118.35–206.60 mg GAE/g), the flavonoid content (10.90–41.05 mg rutin/g), and the Trolox Equivalent Antioxidant Capacity (TEAC) (1.63–2.05 mM) of the extracts were determined. The EtOH:H2O (70:30, v/v) extract analyzed by using SLDE-Naviglio showed the highest phenolic and flavonoid content and radical scavenging activity.
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- 2024
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7. Evaluation of Potential Predictive Biomarkers for Defining Brain Radiotherapy Efficacy in Non-Small Cell Lung Cancer Patients with Brain Metastases: A Case Report and a Narrative Review
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Angelo Luciano, Luigi Liguori, Giovanna Polcaro, Francesco Sabbatino, and Stefano Pepe
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brain metastases ,NSCLC ,predictive biomarkers for radiotherapy ,radiotherapy ,prognostic scores ,WBRT ,Medicine (General) ,R5-920 - Abstract
Non-small cell lung cancer (NSCLC) is the second most common cancer worldwide, resulting in 1.8 million deaths per year. Most patients are diagnosed with a metastatic disease. Brain metastases are one of the most common metastatic sites and are associated with severe neurological symptoms, shorter survival, and the worst clinical outcomes. Brain radiotherapy and systemic oncological therapies are currently used for controlling both cancer progression and neurological symptoms. Brain radiotherapy includes stereotactic brain ablative radiotherapy (SBRT) or whole brain radiotherapy (WBRT). SBRT is applied for single or multiple (up to ten) small (diameter less than 4 cm) lesions, whereas WBRT is usually applied for multiple (more than ten) and large (diameter greater than 4 cm) brain metastases. In both cases, radiotherapy application may be viewed as an overtreatment which causes severe toxicities without achieving a significant clinical benefit. Thus far, a number of scoring systems to define the potential clinical benefits derived from brain radiotherapy have been proposed. However, most are not well established in clinical practice. In this article, we present a clinical case of a patient with advanced NSCLC carrying a BRAFV600E mutation and brain metastases. We review the variables in addition to applicable scoring systems considered to have potential for predicting clinical outcomes and benefits of brain radiotherapy in patients with advanced NSCLC and brain metastases. Lastly, we highlight the unmet need of specific scoring systems for advanced NSCLC patients with brain metastases carrying oncogene alterations including BRAFV600E mutations.
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- 2023
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8. Chemical Profile and Antioxidant and Tyrosinase Inhibitory Activity of Chamaemelum nobile L. Green Extracts
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Luciana Maria Polcaro, Antonietta Cerulli, Francesco Montella, Elena Ciaglia, Milena Masullo, and Sonia Piacente
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green extracts ,C. nobile ,tyrosinase assay ,LC-MS analysis ,Chemistry ,QD1-999 - Abstract
The request for skin-whitening agents and bioactive principles able to control hyperpigmentation disorders is continuously growing. Chamomile (Matricaria chamomilla) is used as a remedy for skin diseases, but little is known about the ability of Roman chamomile (Chamaemelum nobile) to act as a skin-whitening agent. With the aim to investigate antioxidant and lightening potential, fresh aerial parts of C. nobile were extracted by maceration, ultrasound-assisted extraction, and solid–liquid dynamic (SLDE-Naviglio) extraction using EtOH/H2O mixtures. Moreover, 32 metabolites (flavonoids, sesquiterpenoids, amides, and polar fatty acids) were identified by liquid chromatography/mass spectrometry. Principal component analysis revealed how the extract EtOH/H2O 50% (Naviglio and long maceration), along with the extract EtOH/H2O 60% (maceration) were richest in flavonoids. All extracts were tested by TEAC and DPPH assays, and to determine their in vitro antioxidant activity, the DHR 123 probe–intracellular ROS assay in HaCaT cells, for some extracts, was performed. Moreover, their ability to exert a whitening effect was tested by analyzing their tyrosinase inhibitory activity. The quantitative determination of apigenin, known as a natural tyrosinase inhibitor, was performed by LC-ESI/QTrap/MS/MS using the multiple reaction monitoring (MRM) method. These results are promising for selecting an extraction method to obtain a sustainable product rich in bioactives.
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- 2024
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9. Development of a New Extraction Method for Pomegranate and Metabolite Profiling by a LC-MS and 1H NMR Combined Approach
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Luciana Maria Polcaro, Marzieh Rahmani Samani, Sonia Piacente, and Milena Masullo
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green extraction ,SLDE-Naviglio ,chemical profiles ,Punica granatum ,pomegranate food supplement ,LC-MS analysis ,Chemical technology ,TP1-1185 - Abstract
The pomegranate (Punica granatum L.) market has steadily grown due to the increasing demand of health-conscious consumers of products with health-promoting effects. Recently, a growing interest in developing ecological and environmentally friendly extraction methods has led to investigating extraction procedures to obtain a higher extraction yield using a lower amount of solvents and energy. Herein, a new extraction procedure was developed to obtain an enriched pomegranate food supplement by using the peels of pomegranate, cultivar “Dente di Cavallo” and its juice. The extraction was performed through a non-conventional extraction technique like SLDE-Naviglio using ethanol and pomegranate juice as a solvent, and peels as a matrix. The extract was analysed by a combined approach based on LCESI/QExactive/MS/MS and NMR analysis, and its chemical profile was compared with those of pomegranate juice and of the extract obtained from peels by SLDE-Naviglio by using ethanol:H2O. The LC-MS analysis highlighted the presence of hydrolysable tannins, flavonoids, ellagic acid and phenol glucoside derivatives, while 1H NMR analysis completed the profile by detecting the primary metabolites. The LC-MS and 1H NMR analysis indicated that the extract obtained by SLDE-Naviglio using ethanol and pomegranate juice was enriched in the bioactives as confirmed by the highest phenolic, tannin and flavonoid content.
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- 2024
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10. Wind and nebula of the M33 variable GR290 (WR/LBV)
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Maryeva, Olga, Koenigsberger, Gloria, Egorov, Oleg, Rossi, Corinne, Polcaro, Vito Francesco, Calabresi, Massimo, and Viotti, Roberto F.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
Context: GR290 (M33/V532=Romano's Star) is a suspected post-LBV star located in M33 galaxy that shows a rare Wolf-Rayet spectrum during its minimum light phase. In spite of many studies, its atmospheric structure, its circumstellar environment and its place in the general context of massive stars evolution is poorly known. Aims: Detailed study of its wind and mass loss, and study of the circumstellar environment associated to the star. Methods: Long-slit spectra of GR290 were obtained during its present minimum luminosity phase with the GTC together with contemporaneous BVRI photometry. The data were compared with non-LTE model atmosphere synthetic spectra computed with CMFGEN and with CLOUDY models for ionized interstellar medium regions. Results: The current $m_V=18.8$ mag, is the faintest at which this source has ever been observed. The non-LTE models indicate effective temperature $T_{eff}$=27-30 kK at radius $R_{2/3}$=27-21 Rsun and mass loss rate $\dot{M}=1.5\times10^{-5}$ Msun yr$^{-1}$. The terminal wind speed $V_\infty$=620 ${\rm km~s^{-1}}$ is faster than ever before recorded while the current luminosity $L_*=(3.1-3.7)\times 10^5$ Lsun is the lowest ever deduced. It is overabundant in He and N and underabundant in C and O. It is surrounded by an unresolved compact HII region with dimensions $\leq$4 pc, from where H-Balmer, HeI lines and [OIII] and [NII] are detected. In addition, we find emission from a more extended interstellar medium (ISM) region which appears to be asymmetric, with a larger extent to the East (16-40 pc) than to the West. Conclusions: In the present long lasting visual minimum, GR290 is in a lower bolometric luminosity state with higher mass loss rate. The nearby nebular emission seems to suggest that the star has undergone significant mass loss over the past $10^4-10^5$ years and is nearing the end stages of its evolution., Comment: submitted to A&A, 12 pages, 9 figures, 7 tables
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- 2018
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11. The 2018 and 2019 Spanish-Italian Archaeological Campaigns at Jebel al-Mutawwaq: the Early Bronze I Site and the Megalithic Necropolis
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Polcaro, Andrea, primary and Muniz, Juan Ramon, additional
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- 2023
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12. Tell Zurghul, Ancient Nigin, Iraq: Preliminary Report of the New Results from Recent Excavations
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Nadali, Davide, primary and Polcaro, Andrea, additional
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- 2023
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13. Introduction
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Nadali, Davide, primary, Pittman, Holly, additional, and Polcaro, Andrea, additional
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- 2022
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14. Checkpoint based immunotherapy in non-small cell lung cancer: a real-world retrospective study.
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Liguori, Luigi, Giorgio, Gabriele, Polcaro, Giovanna, Pagliara, Valentina, Malandrino, Domenico, Perri, Francesco, Cascella, Marco, Ottaiano, Alessandro, Conti, Valeria, Servetto, Alberto, Bianco, Roberto, Pepe, Stefano, and Sabbatino, Francesco
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PROPORTIONAL hazards models ,NON-small-cell lung carcinoma ,DRUG side effects ,IMMUNE checkpoint inhibitors ,MANN Whitney U Test - Abstract
Introduction: Immune checkpoint inhibitor (ICI)-based immunotherapy targeting programmed cell death 1 (PD-1) or its ligand 1 (PD-L1) has radically changed the management of many types of solid tumors including non-small cell lung cancer (NSCLC). Many clinical trials have demonstrated that ICIs improve the survival and the quality of life of patients with advanced non oncogene NSCLC as compared to standard therapies. However, not all patients achieve a clinical benefit from this immunotherapeutic approach. As a result, real-word validation of the efficacy and safety of ICIs can be useful for defining potential predictive biomarkers as well as for overcoming limitations linked to clinical trial restrictions. Methods: We retrospectively retrieved the clinical data of patients with advanced non oncogene NSCLC treated with ICIs (anti-PD-1 or anti-PD-L1) as single agent or in combination with chemotherapy at "San Giovanni di Dio e Ruggi D'Aragona" University Hospital from January 2016 to December 2023. Potential correlations between clinical-pathological characteristics and safety or survival outcomes were investigated employing the Fisher's exact test, Mann-Whitney U test, the Kruskal-Wallis method and log-rank test, as applicable. Multivariate survival analyses were performed using the Cox proportional hazards model. Results: Clinical data of 129 patients were retrieved. At a median follow-up of 29.70 months, progression-free survival (PFS) and overall survival (OS) were 5.27 months and 8.43 months, respectively. At the multivariate analyses, smoking status, presence of bone metastases and the occurrence of immune-related adverse events (irAEs) were correlated with both PFS and OS. Moreover, patients treated with anti-PD-1-based therapy achieved an increased clinical benefit than those treated with anti-PD-L1. Discussion: In this study we described our real-world experience of ICIs for the treatment of patients with advanced non oncogene NSCLC. A decreased OS in our study population was reported as compared to that of patients included in the clinical trials. Noteworthy, correlations between clinical-pathological characteristics and survival outcomes emerged. Nevertheless, the potential integration of clinical-pathological characteristics as predictive biomarkers in more accurate therapeutic algorithms as well as the underlying biological mechanisms should be further validated in ad hoc studies. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
15. Chemical Profile and Antioxidant and Tyrosinase Inhibitory Activity of Chamaemelum nobile L. Green Extracts
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Polcaro, Luciana Maria, primary, Cerulli, Antonietta, additional, Montella, Francesco, additional, Ciaglia, Elena, additional, Masullo, Milena, additional, and Piacente, Sonia, additional
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- 2024
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16. GR 290 (Romano's Star): 2. Light history and evolutionary state
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Polcaro, V. F., Maryeva, O., Nesci, R., Calabresi, M., Chieffi, A., Galleti, S., Gualandi, R., Haver, R., Mills, O. F., Osborn, W. H., Pasquali, A., Rossi, C., Vasilyeva, T., and Viotti, R. F.
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Astrophysics - Solar and Stellar Astrophysics - Abstract
We have built the historical light curve of the luminous variable GR 290 back to 1901, from old observations of the star found in several archival plates of M 33. These old recordings together with published and new data show that for at least half a century the star was in a low luminosity state, with B ~18. After 1960, five large variability cycles of visual luminosity were recorded. The amplitude of the oscillations was seen increasing towards the 1992-1994 maximum, then decreasing during the last maxima. The recent light curve indicates that the photometric variations have been quite similar in all the bands, and that the B-V color index has been constant within +/-0.1 m despite the 1.5m change of the visual luminosity. The spectrum of GR 290 at the large maximum of 1992-94, was equivalent to late-B type, while, during 2002-2014, it has varied between WN10h-11h near the visual maxima to WN8h-9h at the luminosity minima. We have detected, during this same period, a clear anti-correlation between the visual luminosity, the strength of the HeII 4686 A emission line, the strength of the 4600-4700 A lines blend and the spectral type. From a model analysis of the spectra collected during the whole 2002-2014 period we find that the Rosseland radius R_{2/3}, changed between the minimum and maximum luminosity phases by a factor of 3, while T_eff varied between about 33,000 K and 23,000 K. The bolometric luminosity of the star was not constant, but increased by a factor of ~1.5 between minimum and maximum luminosity, in phase with the apparent luminosity variations. In the light of current evolutionary models of very massive stars, we find that GR 290 has evolved from a ~60 M_Sun progenitor star and should have an age of about 4 million years. We argue that it has left the LBV stage and is moving to a Wolf-Rayet stage of late nitrogen spectral type., Comment: Accepted on The Astronomical Journal, 10 figures. Replaced because the previous uploaded file was that without the final small corrections requested by the referee
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- 2016
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17. Prior Anti-Angiogenic TKI-Based Treatment as Potential Predisposing Factor to Nivolumab-Mediated Recurrent Thyroid Disorder Adverse Events in mRCC Patients: A Case Series
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Luigi Liguori, Angelo Luciano, Giovanna Polcaro, Alessandro Ottaiano, Marco Cascella, Francesco Perri, Stefano Pepe, and Francesco Sabbatino
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anti-angiogenic ,ICI ,mRCC ,nivolumab ,PD-1 ,recurrent ,Biology (General) ,QH301-705.5 - Abstract
Immune checkpoint inhibitors (ICIs) targeting programmed cell death 1 (PD-1) or its ligand 1 (PD-L1) have revolutionized the management of many types of solid tumors, including metastatic renal cell carcinoma (mRCC). Both sequential and combinatorial therapeutic strategies utilizing anti-PD-1 monoclonal antibodies (mAbs) and anti-angiogenic tyrosine kinase inhibitors (TKIs) have demonstrated to improve the survival of patients with mRCC as compared to standard therapies. On the other hand, both ICIs and TKIs are well known to potentially cause thyroid disorder adverse events (TDAEs). However, in the context of sequential therapeutic strategy, it is not clear whether prior anti-angiogenic TKI may increase the risk and/or the severity of ICI-related TDAEs. In this work, by describing and analyzing a case series of mRCC patients treated sequentially with prior TKIs and then with ICIs, we investigated the role of prior anti-angiogenic TKI-based treatment as a potential predisposing factor to anti-PD-1-mediated recurrent TDAEs, as well as its potential impact on the clinical characteristics of nivolumab-mediated recurrent TDAEs. Fifty mRCC patients were included in the analysis. TKI-mediated TDAEs were reported in ten out of fifty patients. TKI-mediated TDAEs were characterized by hypothyroidism in all ten patients. Specifically, 40%, 40% and 20% of patients presented grade 1, 2 and 3 hypothyroidisms, respectively. Following tumor progression and during anti-PD-1 nivolumab treatment, five out of ten patients developed anti-PD-1 nivolumab-mediated recurrent TDAEs. Anti-PD-1 nivolumab-mediated recurrent TDAEs were characterized by an early transient phase of thyrotoxicosis and a late phase of hypothyroidism in all five patients. The TDAEs were grade 1 and 2 in four and one patients, respectively. Prior anti-angiogenic TKI did not modify the clinical characteristics of nivolumab-mediated recurrent TDAEs. However, all five patients required an increased dosage of levothyroxine replacement therapy. In conclusion, our work suggests that prior anti-angiogenic TKI-based treatment significantly increases the risk of ICI-mediated recurrent TDAEs in patients with mRCC without modifying their clinical characteristics. The most relevant effect for these patients is the need to increase the dosage of lifelong levothyroxine replacement therapy.
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- 2023
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18. Spinacia oleracea L. Baby Leaves as a Source of Bioactive Principles: The Chemical Profiling of Eco-Sustainable Extracts by Using LC-ESI/HRMS- and 1 H NMR-Based Metabolomics.
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Cerulli, Antonietta, Polcaro, Luciana Maria, Masullo, Milena, and Piacente, Sonia
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PRINCIPAL components analysis ,DIETARY supplements ,SPINACH ,FLAVONOIDS ,OXIDANT status ,FRUIT extracts - Abstract
Spinacia oleracea L. cultivar platypus leaves are identified as a functional food due to their nutrient composition which promotes health beyond basic nutrition. Considering the increasing use of food supplements, S. oleracea baby leaves have been extracted by maceration, solid–liquid dynamic extraction (SLDE)-Naviglio, and ultrasound-assisted extraction (UAE) using EtOH and EtOH:H
2 O mixtures. The analysis of the extracts by using LC-ESI/HRMSMS revealed 42 compounds (flavonoids, polar lipid derivatives, and 20-hydroxyecdysone), along with primary metabolites, detected by NMR analysis. A principal component analysis (PCA) of LC-ESI/HRMS and NMR data was performed, revealing how 20-hydroxyecdysone and flavonoids, the specialized metabolites mainly responsible for the biological activity of S. oleracea leaves, occurred in the highest amount in the EtOH and EtOH:H2 O (70:30, v/v) extracts obtained by SLDE-Naviglio extraction. 20-hydroxyecdysone was also quantified in all the extracts via LC-ESI/QTrap/MS/MS using the Multiple Reaction Monitoring (MRM) method. The EtOH extracts obtained by SLDE-Naviglio and maceration showed the highest content (82.16 and 81.27 mg/g extract, respectively). The total phenolic content (118.35–206.60 mg GAE/g), the flavonoid content (10.90–41.05 mg rutin/g), and the Trolox Equivalent Antioxidant Capacity (TEAC) (1.63–2.05 mM) of the extracts were determined. The EtOH:H2 O (70:30, v/v) extract analyzed by using SLDE-Naviglio showed the highest phenolic and flavonoid content and radical scavenging activity. [ABSTRACT FROM AUTHOR]- Published
- 2024
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19. Development of a New Extraction Method for Pomegranate and Metabolite Profiling by a LC-MS and 1H NMR Combined Approach
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Polcaro, Luciana Maria, primary, Samani, Marzieh Rahmani, additional, Piacente, Sonia, additional, and Masullo, Milena, additional
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- 2024
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20. Shear wave cardiovascular MR elastography using intrinsic cardiac motion for transducer-free non-invasive evaluation of myocardial shear wave velocity
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Marian Amber Troelstra, Jurgen Henk Runge, Emma Burnhope, Alessandro Polcaro, Christian Guenthner, Torben Schneider, Reza Razavi, Tevfik F. Ismail, Jordi Martorell, and Ralph Sinkus
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Medicine ,Science - Abstract
Abstract Changes in myocardial stiffness may represent a valuable biomarker for early tissue injury or adverse remodeling. In this study, we developed and validated a novel transducer-free magnetic resonance elastography (MRE) approach for quantifying myocardial biomechanics using aortic valve closure-induced shear waves. Using motion-sensitized two-dimensional pencil beams, septal shear waves were imaged at high temporal resolution. Shear wave speed was measured using time-of-flight of waves travelling between two pencil beams and corrected for geometrical biases. After validation in phantoms, results from twelve healthy volunteers and five cardiac patients (two left ventricular hypertrophy, two myocardial infarcts, and one without confirmed pathology) were obtained. Torsional shear wave speed in the phantom was 3.0 ± 0.1 m/s, corresponding with reference speeds of 2.8 ± 0.1 m/s. Geometrically-biased flexural shear wave speed was 1.9 ± 0.1 m/s, corresponding with simulation values of 2.0 m/s. Corrected septal shear wave speeds were significantly higher in patients than healthy volunteers [14.1 (11.0–15.8) m/s versus 3.6 (2.7–4.3) m/s, p = 0.001]. The interobserver 95%-limits-of-agreement in healthy volunteers were ± 1.3 m/s and interstudy 95%-limits-of-agreement − 0.7 to 1.2 m/s. In conclusion, myocardial shear wave speed can be measured using aortic valve closure-induced shear waves, with cardiac patients showing significantly higher shear wave speeds than healthy volunteers. This non-invasive measure may provide valuable insights into the pathophysiology of heart failure.
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- 2021
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21. An Innovative Strategy to Protect Cultural Heritage in Jordan: The Madaba Regional Archaeological Museum Project (MRAMP)
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Richard, Suzanne, D'Andrea, Marta, Polcaro, Andrea, and Clark, Douglas R.
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- 2019
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22. The So Called Neo-Pythagorean Basilica of Porta Maggiore in Rome: The Most Mysterious Roman Monument
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Polcaro, V. F., Sclavi, S., Gaudenzi, S., Labianca, L., Ranieri, M., Orchiston, Wayne, Series Editor, Evans, James, Editorial Board Member, Goss, Miller, Editorial Board Member, Hamacher, Duane, Editorial Board Member, Lequeux, James, Editorial Board Member, Mitton, Simon, Editorial Board Member, Rothenberg, Marc, Editorial Board Member, Ruggles, Clive, Editorial Board Member, Sun, Xiaochun, Editorial Board Member, Trimble, Virginia, Editorial Board Member, Wolfschmidt, Gudrun, Editorial Board Member, Magli, Giulio, editor, González-García, Antonio César, editor, Belmonte Aviles, Juan, editor, and Antonello, Elio, editor
- Published
- 2019
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23. Astronomical orientations in sanctuaries of Daunia
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Antonello, E., Polcaro, V. F., Sisto, A. M Tunzi, and LoZupone, M.
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Physics - History and Philosophy of Physics ,Physics - Popular Physics - Abstract
Prehistoric sanctuaries of Daunia date back several thousand years. During the Neolithic and Bronze Age the farmers in that region dug hypogea and holes whose characteristics suggest a ritual use. In the present note we summarize the results of the astronomical analysis of the orientation of the row holes in three different sites, and we point out the possible use of the setting of the stars of Centaurus. An interesting archaeological confirmation of an archaeoastronomical prediction is also reported., Comment: 7 pages, 7 figures
- Published
- 2013
24. Prehistoric sanctuaries in Daunia
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Antonello, E., Polcaro, V. F., Tunzi, A. M., and Zupone, M. Lo
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Physics - History and Philosophy of Physics ,Astrophysics - Solar and Stellar Astrophysics ,Physics - Popular Physics - Abstract
Daunia is a region in northern Apulia with many interesting archaeological sites, particularly of the Neolithic and Bronze Age. Beginning from the fifth millennium BC, the farmers living in the wide plain of Daunia dug hypogea and holes in sites that could be considered prehistoric sanctuaries. The characteristics of the rows of holes indicate a ritual use, and the archaeologists tend to exclude other applications, such as post holes and cultivations. The rows have possibly an astronomical orientation, and in the sanctuary discovered near Ordona, some stars of the Centaurus-Crux group (may be alpha Centauri itself) could have been used as targets. In past centuries, astronomers and scholars have remarked this spectacular region of the sky, and its possible relevance for the ancient civilizations was pointed out for example by G.V. Schiaparelli in 1903. In his work on the astronomy in the Old Testament, he mentioned in particular the observations of the astronomer W.S. Jacob and of other scholars. It would be probably worth to make simulations in order to reproduce the 'Jacob effect', that is the diffused light (a sort of faint twilight) produced by such very rich stellar region of the sky., Comment: 6 pages, 6 figures
- Published
- 2013
25. Effects of cold temperature and snowfall on stroke mortality: A case-crossover analysis
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Polcaro-Pichet, Sara, Kosatsky, Tom, Potter, Brian J., Bilodeau-Bertrand, Marianne, and Auger, Nathalie
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- 2019
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26. Light and Shadows over Petra: astronomy and landscape in Nabataean lands
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Belmonte, J. A., Gonzalez-Garcia, A. C., and Polcaro, A.
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Physics - History and Philosophy of Physics - Abstract
The Nabateans built several monuments in Petra and elsewhere displaying a decoration with a preference for astronomical motifs, possibly as a reflection of their religion. However, due to the lack of direct written accounts and the scarcity of inscriptions we do not have a clear knowledge on the precise nature of such believes and how these reflected on the calendar or the religious time-keeping system of this ancient society. A statistical analysis of the orientation of their sacred monuments demonstrates that astronomical orientations were often part of an elaborated plan and possibly a trace of the astral nature of Nabataean religion. Petra and other monuments in the ancient Nabataean kingdom have proven to be marvellous laboratories of the interaction between landscape features and astronomical events showing impressive hierophanies on particular monuments related to cultic times and worships. Among other findings, the famous Ad Deir has shown a fascinating ensemble of light and shadow effects, perhaps connected with the bulk of Nabataean mythology, while from the impressive Urn tomb, a series of suggestive solstitial and equinoctial alignments emanate which might have lately helped its selection as the cathedral of the city. This paper demonstrates that the sky was a substantial element on Nabataean religion and reveals new evidence for cultic worship centred on the celestial sphere., Comment: 13 pages, 8 figures, Accepted for publication in Nexus Network Journal (2013)
- Published
- 2012
27. The Extreme LBV Star GR290 (Romano's Star) in M33. Optical Spectrophotometric Monitoring
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Polcaro, V. F., Viotti, R. F., Rossi, C., Galleti, S., Gualandi, R., and Norci, L.
- Subjects
Astrophysics - Solar and Stellar Astrophysics - Abstract
We study the long term, S Dor-type variability and the present hot phase of the LBV star GR290 (Romano's Star) in M33 in order to investigate possible links between the LBV and WNL stages of very massive stars. We use intermediate resolution spectra, obtained with WHT in December 2008, when GR290 was at minimum (V = 18.6), as well as new low resolution spectra and B V R I photometry obtained with the Loiano and Cima Ekar telescopes during 2007-2010. We identify more than 80 emission lines in the 3100-10000 A range, belonging to different species and to forbidden transitions. Many lines, especially the HeI triplets, show a P Cygni profile with an a-e radial velocity difference from -300 to -500 km/s. The shape of the 4630-4713 A emission blend and of other emission lines resembles that of WN9 stars; the blend deconvolution shows that the HeII 4686 A has a strong broad component with FWHM \simeq 1700 km/s. During 2003-2010 the star underwent large spectral variations, best seen in the 4630-4686 A emission feature. Using the late-WN spectral types of Crowther & Smith (1997), GR290 apparently varied between the WN11 and WN8-9 spectral types, the hotter being the star the fainter its visual magnitude. This spectrum-visual luminosity anticorrelation of GR290 is reminiscent of the behaviour of the best studied LBVs. During the 2008 minimum we find a significant decrease in bolometric luminosity, which could be attributed to absorption by newly formed circumstellar matter. We suggest that, presently, the broad 4686 A line and the optical continuum are formed in a central WR region, while the narrow emission line spectrum originate in an extended, slowly expanding envelope, that is composed by matter ejected during previous high luminosity phases, and ionized by the central nucleus. GR290 could have just entered in a phase preceeding the transition from the LBV state to late WN type., Comment: AJ in press
- Published
- 2010
28. The B[e] phenomenon in the Milky Way and Magellanic Clouds
- Author
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Miroshnichenko, Anatoly, Manset, Nadine, Polcaro, Francesco, Rossi, Corinne, and Zharikov, Sergey
- Subjects
Astrophysics - Solar and Stellar Astrophysics - Abstract
Discovered over 30 years ago, the B[e] phenomenon has not yet revealed all its puzzles. New objects that exhibit it are being discovered in the Milky Way, and properties of known objects are being constrained. We review recent findings about objects of this class and their subgroups as well as discuss new results from studies of the objects with yet unknown nature. In the Magellanic Clouds, the population of such objects has been restricted to supergiants. We present new candidates with apparently lower luminosities found in the LMC., Comment: 5 pages, 2 figures, IAU Symposium 272, Active OB stars: structure, evolution, mass loss and critical limits
- Published
- 2010
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29. Toward Understanding The B[e] Phenomenon: III. Properties of the optical counterpart of IRAS 00470+6429
- Author
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Miroshnichenko, A. S., Chentsov, E. L., Klochkova, V. G., Zharikov, S. V., Grankin, K. N., Kusakin, A. V., Gandet, T. L., Klingenberg, G., Kildahl, S., Rudy, R. J., Lynch, D. K., Venturini, C. C., Mazuk, S., Puetter, R. C., Perry, R. B., Carciofi, A. C., Bjorkman, K. S., Gray, R. O., Bernabei, S., Polcaro, V. F., Viotti, R. F., and Norci, L.
- Subjects
Astrophysics - Solar and Stellar Astrophysics - Abstract
FS CMa type stars are a group of Galactic objects with the B[e] phenomenon. They exhibit strong emission-line spectra and infrared excesses, which are most likely due to recently formed circumstellar dust. The group content and identification criteria were described in the first two papers of the series. In this paper we report our spectroscopic and photometric observations of the optical counterpart of IRAS 00470+6429 obtained in 2003--2008. The optical spectrum is dominated by emission lines, most of which have P Cyg type profiles. We detected significant brightness variations, which may include a regular component, and variable spectral line profiles in both shape and position. The presence of a weak Li {\sc I} 6708 \AA line in the spectrum suggests that the object is most likely a binary system with a B2--B3 spectral type primary companion of a luminosity $\log$ L/L$\odot$ = 3.9$\pm$0.3 and a late-type secondary companion. We estimate a distance toward the object to be 2.0$\pm$0.3 kpc from the Sun., Comment: 37 pages, 13 figures
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- 2009
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30. 1191 Prophylactic TXA prior to skin incision in high-risk cesarean deliveries: Does it make a difference?
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Zantow, Emily, primary, Wilson, Olivia, additional, Jenkins, Elena, additional, Polcaro, Joseph, additional, and Chavan, Niraj R., additional
- Published
- 2024
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31. Improving Health Literacy of Elective Procedures in Pediatric Otolaryngology.
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Del Risco, Amanda, Cherches, Alexander, Polcaro, Lauren, Washabaugh, Claire, Hales, Robin, Jiang, Rong, Allori, Alexander, and Raynor, Eileen
- Abstract
Objective: To identify if the addition of supplementary material, such as video or written resources, to the consent process, can improve a patient's or guardian's health literacy in pediatric otolaryngology. Study Design: Prospective randomized crossover design. Setting: Tertiary Academic Center. Methods: From April 18, 2022 to August 29, 2023, 151 children scheduled to undergo 1 of 6 procedures by the same provider were queried and completed a 6‐question baseline test based on the information. They each watched a 2‐minute video and read a written summary about the procedure; the order of resources was randomized. They answered the same 6‐questions after viewing each resource. All tests were scored based on accuracy using an ordinal scale of 1 to 6. Resource preference was collected. Wilcoxon signed‐rank tests were run to analyze differences in scores after the addition of supplementary resources and logistic regression modeling was run to analyze demographic effects on postresource score differences. Results: Of 151 participants, 74.2% were guardians, with 78.8% having completed a high school or greater education. The Wilcoxon signed‐rank test indicated that postresource scores were statistically significantly higher (P <.001) than pretest scores. Logistic regression modeling showed that participants were less likely to show score improved if they were younger than 18 and were of white race. A majority (87.4%) preferred the addition of a video to the consent process. Conclusion: The addition of video or written resources significantly improves understanding of elective procedures. The development of procedure‐specific resources can supplement the consent process and ensure decision‐makers have adequate health literacy for informed decision‐making. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
32. Natural Health Products for Anti-Cancer Treatment: Evidence and Controversy.
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Conti, Valeria, Polcaro, Giovanna, De Bellis, Emanuela, Donnarumma, Danilo, De Rosa, Federica, Stefanelli, Berenice, Corbi, Graziamaria, Sabbatino, Francesco, and Filippelli, Amelia
- Subjects
- *
PROSTATE cancer patients , *NATURAL products , *VITAMIN E , *CLINICAL trials , *GINSENOSIDES - Abstract
Natural Health Products (NHPs) have long been considered a valuable therapeutic approach for the prevention and treatment of various diseases, including cancer. However, research on this topic has led to inconclusive and often controversial results. This review aims to provide a comprehensive update of the effects and mechanisms related to the use of NHPs, to describe the results of randomized clinical trials (RCTs) on their effects in cancer patients, and to critically discuss factors influencing clinical outcomes. RCTs available in the literature, even those studying the same NHP, are very heterogeneous in terms of indications, doses, route and timing of administration, and outcomes evaluated. Silymarin, ginsenoside, and vitamin E appear to be useful in attenuating adverse events related to radiotherapy or chemotherapy, and curcumin and lycopene might provide some benefit in patients with prostate cancer. Most RCTs have not clarified whether NHP supplementation provides any real benefit, while harmful effects have been shown in some cases. Overall, the available data suggest that although there is some evidence to support the benefits of NHPs in the management of cancer patients, further clinical trials with the same design are needed before their introduction into clinical practice can be considered. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
33. Bispecific Antibodies: A Novel Approach for the Treatment of Solid Tumors
- Author
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Luigi Liguori, Giovanna Polcaro, Annunziata Nigro, Valeria Conti, Carmine Sellitto, Francesco Perri, Alessandro Ottaiano, Marco Cascella, Pio Zeppa, Alessandro Caputo, Stefano Pepe, and Francesco Sabbatino
- Subjects
antibodies ,bispecific ,bsAb ,clinical trials ,immunotherapy ,mAb ,Pharmacy and materia medica ,RS1-441 - Abstract
Advancement in sequencing technologies allows for the identification of molecular pathways involved in tumor progression and treatment resistance. Implementation of novel agents targeting these pathways, defined as targeted therapy, significantly improves the prognosis of cancer patients. Targeted therapy also includes the use of monoclonal antibodies (mAbs). These drugs recognize specific oncogenic proteins expressed in cancer cells. However, as with many other types of targeting agents, mAb-based therapy usually fails in the long-term control of cancer progression due to the development of resistance. In many cases, resistance is caused by the activation of alternative pathways involved in cancer progression and the development of immune evasion mechanisms. To overcome this off-target resistance, bispecific antibodies (bsAbs) were developed to simultaneously target differential oncogenic pathway components, tumor-associated antigens (TAA) and immune regulatory molecules. As a result, in the last few years, several bsAbs have been tested or are being tested in cancer patients. A few of them are currently approved for the treatment of some hematologic malignancies but no bsAbs are approved in solid tumors. In this review, we will provide an overview of the state-of-the-art of bsAbs for the treatment of solid malignancies outlining their classification, design, main technologies utilized for production, mechanisms of action, updated clinical evidence and potential limitations.
- Published
- 2022
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34. The Madaba Regional Archaeological Museum Project (MRAMP)
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Richard, Suzanne, primary, Polcaro, Andrea, additional, D’Andrea, Marta, additional, and Clark, Douglas R., additional
- Published
- 2020
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35. Italian Archaeological Expedition to Nigin, Southern Iraq
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Nadali, Davide, primary and Polcaro, Andrea, additional
- Published
- 2020
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36. The 2006 hot phase of Romano's star (GR 290) in M33
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Viotti, R. F., Galleti, S., Gualandi, R., Montagni, F., Polcaro, V. F., Rossi, C., and Norci, L.
- Subjects
Astrophysics - Abstract
Understanding the nature of the instabilities of LBVs is important to understand the late evolutionary stages of very massive stars. We investigate the long term, S Dor-type variability of the luminous blue variable GR290 (Romano's star) in M33, and its 2006 minimum phase. New spectroscopic and photometric data taken in November and December 2006 were employed in conjunction with already published data on GR290 to derive the physical structure of GR290 in different phases and the time scale of the variability. We find that by the end of 2006, GR 290 had reached the deepest visual minimum so far recorded. Its present spectrum resembles closely that of the Of/WN9 stars, and is the hottest so far recorded in this star (and in any LBV as well), while its visual brightness decreased by about 1.4 mag. This first spectroscopic record of GR290 during a minimum phase confirms that, similarly to AG Car and other LBVs, the star is subject to ample S Dor-type variations, being hotter at minimum, suggesting that the variations take place at constant bolometric luminosity., Comment: 4 figures, 1 table, accepted for publication in A&A Letters
- Published
- 2007
- Full Text
- View/download PDF
37. Supernovae astrophysics from Middle Age documents
- Author
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Polcaro, Francesco and Martocchia, Andrea
- Subjects
Astrophysics - Abstract
The supernova explosion of 1054 AD, which originated the Crab Nebula and Pulsar, is probably the astronomical event which has been most deeply studied by means of historical sources. However, many mysteries and inconsistencies, both among the different sources and between what is deduced by the historical records and the present day astronomical data, are demanding extraordinary efforts by theoretical astrophysicists in order to put all the data in a meaningful framework. An accurate analysis of the historical sources, like the one we are presenting here, may contribute to solve some of these problems., Comment: in: Proc. of the IAU Symposium no.230, "Populations of High Energy Sources in Galaxies", held in Dublin (Ireland), August 15-19, 2005. Evert J.A. Meurs & G. Fabbiano, eds. (in press)
- Published
- 2005
38. Portable NIR Raman microspectroscopy investigation on Early Bronze IV pottery (2500–1950 BCE) from Khirbat Iskandar, Jordan
- Author
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Chiriu, Daniele, Ricci, Pier Carlo, Scattini, Maddalena, Polcaro, Andrea, D’Andrea, Marta, Richard, Suzanne, Qader, Abdulqader Abdullah, and Carbonaro, Carlo Maria
- Published
- 2018
- Full Text
- View/download PDF
39. The identification of the optical/IR counterpart of the 15.8-s transient X-ray pulsar XTE J1946+274
- Author
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Verrecchia, F., Israel, G. L., Negueruela, I., Covino, S., Polcaro, V. F., Clark, J. S., Steele, I. A., Gualandi, R., Speziali, R., and Stella, L.
- Subjects
Astrophysics - Abstract
We report on the discovery of the optical/IR counterpart of the 15.8s transient X-ray pulsar XTE J1946+274. We re-analysed archival BeppoSAX observations of XTE J1946+274, obtaining a new refined position (a circle with 22" radius at 90% confidence level). Based on this new position we carried out optical and infra-red (IR) follow-up observations. Within the new error circle we found a relatively optical faint (B=18.6) IR bright (H=12.1) early type reddened star (V--R=1.6). The optical spectra show strong H-alpha and H-beta emission lines. The IR photometric observations of the field confirm the presence of an IR excess for the H-alpha--emitting star (K=11.6, J--H=0.6) which is likely surrounded by a circumstellar envelope. Spectroscopic and photometric data indicate a B0--1V--IVe spectral-type star located at a distance of 8--10kpc and confirm the Be-star/X-ray binary nature of XTE J1946+274., Comment: Accepted for publication on A&A (7 pages and 4 figures)
- Published
- 2002
- Full Text
- View/download PDF
40. The discovery and study of the optical counterparts of the transient X-ray pulsars RXJ0052.1-7319 and XTEJ0111.2-7317 in the SMC
- Author
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Covino, Stefano, Negueruela, Ignacio, Campana, Sergio, Israel, Gianluca, Polcaro, Francesco, Stella, Luigi, and Verrecchia, Francesco
- Subjects
Astrophysics - Abstract
We report on the discovery and confirmation of the optical counterparts of the two transient X-ray pulsars, RXJ0052.1-7319 and XTEJ0111.2-7317. In the narrow (~3" radius) X-ray error circle of RXJ0052.1-7319 we found a V=14.6 (B-V=0.1) 09.5IIIe (a classification as a B0Ve star is also possible, since the luminosity class depends on the uncertainty on the adopted reddening). Medium resolution spectra for this object show Balmer lines in emission with an equivalent width of Halpha=-12/-16A. In the X-ray error box of XTEJ0111.2-7317 we found a relatively bright object (V=15.4, B-V=0.06) which has been classified as a B0.5-B1Ve star and that was later confirmed by Coe et al. (2000) as the most plausible counterpart for XTEJ0111.2-7317. Also in this case we easily detect Balmer emission lines with an Halpha equivalent width of about -21A. There is also evidence for the presence of a surrounding nebula, possibly a supernova remnant. A further bright B0Ve star was found just outside the X-ray error circle of XTEJ0111.2-7317. We discuss the implication of these results in the light of the current knowledge of Be/X-ray binary systems in the Magellanic Clouds and within our Galaxy., Comment: Accepted by A&A. 8 pages, 8 figures
- Published
- 2001
- Full Text
- View/download PDF
41. A bioassay battery for the ecotoxicity assessment of soils conditioned with two different commercial foaming products
- Author
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Grenni, P., Caracciolo, A. Barra, Patrolecco, L., Ademollo, N., Rauseo, J., Saccà, M.L., Mingazzini, M., Palumbo, M.T., Galli, E., Muzzini, V.G., Polcaro, C.M., Donati, E., Lacchetti, I., Di Giulio, A., Gucci, P.M.B., Beccaloni, E., and Mininni, G.
- Published
- 2018
- Full Text
- View/download PDF
42. The discovery of the optical/IR counterpart of the 12s transient X-ray pulsar GS 0834-43
- Author
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Israel, G. L., Covino, S., Campana, S., Polcaro, V. F., Roche, P., Stella, L., Di Paola, A., Lazzati, D., Mereghetti, S., Giallongo, E., Fontana, A., and Verrecchia, F.
- Subjects
Astrophysics - Abstract
We report the discovery of the optical/infra-red counterpart of the 12.3s transient X-ray pulsar GS0834-43. We re-analysed archival ROSAT PSPC observations of GS0834-43, obtaining two new refined positions, about 14" and 18" away from the previously published one, and a new spin period measurement. Within the new error circles we found a relatively faint (V=20.1) early type reddened star (V-R=2.24). The optical spectrum shows a strong Halpha emission line. The IR observations of the field confirm the presence of an IR excess for the Halpha-emitting star (K'=11.4, J-K'=1.94) which is likely surrounded by a conspicuous circumstellar envelope. Spectroscopic and photometric data indicate a B0-2 V-IIIe spectral-type star located at a distance of 3-5kpc and confirm the Be-star/X-ray binary nature of GS0834-43., Comment: 6 pages. Accepted for publication in MNRAS
- Published
- 2000
- Full Text
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43. Peritumoral Immune Infiltrate as a Prognostic Biomarker in Thin Melanoma
- Author
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Francesco Sabbatino, Giosuè Scognamiglio, Luigi Liguori, Antonio Marra, Anna Maria Anniciello, Giovanna Polcaro, Jessica Dal Col, Alessandro Caputo, Anna Lucia Peluso, Gerardo Botti, Pio Zeppa, Soldano Ferrone, and Stefano Pepe
- Subjects
thin melanoma ,tumor-infiltrating lymphocytes ,CD4 ,CD8 ,time ,human leukocyte antigen class I antigens ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Thin melanomas are tumors less than 1 mm thick according to Breslow classification. Their prognosis is in most cases excellent. However, a small subset of these tumors relapses. These clinical findings emphasize the need of novel prognostic biomarkers to identify this subset of tumors. Characterization of tumor immune microenvironment (TIME) is currently investigated as a prognostic and predictive biomarker for cancer immunotherapy in several solid tumors including melanoma. Here, taking into account the limited availability of tumor tissues, by characterizing some of the characteristics of TIME such as number of infiltrating lymphocytes, HLA class I antigen and PD-L1 expression, we show that number of infiltrating CD8+ and FOXP3+ T cells as well as CD8+/FOXP3+ T cell ratio can represent a useful prognostic biomarker in thin melanoma. Although further investigations in a larger patient cohort are needed, these findings have potential clinical significance since they can be used to define subgroups of thin melanoma patients who have a worse prognosis and might need different treatment modalities.
- Published
- 2020
- Full Text
- View/download PDF
44. The identification of the long-period X-ray pulsar 1WGA J1958.2+323 with a Be-star/X-ray binary
- Author
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Israel, G. L., Covino, S., Polcaro, V. F., and Stella, L.
- Subjects
Astrophysics - Abstract
We present the results of optical observations performed between May and September 1998 of the stars within the position error circle of the recently discovered 12min pulsating X-ray source 1WGA J1958.2+3232. Based on photometry and slitless spectroscopy, we selected a likely optical counterpart, which was subsequently determined to be a m_V=15.7 B0Ve star, the spectral properties of which are in good agreement with the X-ray results. The proposed optical counterpart shows several H, He and Fe emission-lines, while the interstellar absorption spectral features place the star at a distance of about 800 pc.The inferred X-ray luminosity for this distance is about 10^33 erg s^-1 in the 2--10 keV band. We conclude that 1WGA J1958.2+3232 is a likely new long-period low-luminosity accreting neutron star in a Be-star/X-ray binary system., Comment: 4 pages. Accepted for publication on A&A Letters. 3 PostScript figures. A&A LaTeX macro used
- Published
- 1999
45. The 'Campanari': Big Artificially Pierced and Astronomically Oriented Rocks in the South Territory of Monte Iato (Sicily)
- Author
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Maurici, Ferdinando, Polcaro, Vito F., Scuderi, Alberto, Burton, W. Butler, Advisory editor, and Orlando, Andrea, editor
- Published
- 2017
- Full Text
- View/download PDF
46. Prior Anti-Angiogenic TKI-Based Treatment as Potential Predisposing Factor to Nivolumab-Mediated Recurrent Thyroid Disorder Adverse Events in mRCC Patients: A Case Series
- Author
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Liguori, Luigi, primary, Luciano, Angelo, additional, Polcaro, Giovanna, additional, Ottaiano, Alessandro, additional, Cascella, Marco, additional, Perri, Francesco, additional, Pepe, Stefano, additional, and Sabbatino, Francesco, additional
- Published
- 2023
- Full Text
- View/download PDF
47. Structural and enzymatic insights into species-specific resistance to schistosome parasite drug therapy
- Author
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Taylor, Alexander B., Roberts, Kenneth M., Cao, Xiaohang, Clark, Nathaniel E., Holloway, Stephen P., Donati, Enrica, Polcaro, Chiara M., Pica-Mattoccia, Livia, Tarpley, Reid S., McHardy, Stanton F., Cioli, Donato, LoVerde, Philip T., Fitzpatrick, Paul F., and Hart, P. John
- Published
- 2017
- Full Text
- View/download PDF
48. Raman identification of cuneiform tablet pigments: emphasis and colour technology in ancient Mesopotamian mid-third millennium
- Author
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Chiriu, Daniele, Ricci, Pier Carlo, Carbonaro, Carlo Maria, Nadali, Davide, Polcaro, Andrea, and Collins, Paul
- Published
- 2017
- Full Text
- View/download PDF
49. Development of a New Extraction Method for Pomegranate and Metabolite Profiling by a LC-MS and 1 H NMR Combined Approach.
- Author
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Polcaro, Luciana Maria, Samani, Marzieh Rahmani, Piacente, Sonia, and Masullo, Milena
- Subjects
POMEGRANATE juice ,POMEGRANATE ,TANNINS ,DIETARY supplements ,ENRICHED foods ,ETHANOL ,PHENOL derivatives ,PHYTOCHEMICALS - Abstract
The pomegranate (Punica granatum L.) market has steadily grown due to the increasing demand of health-conscious consumers of products with health-promoting effects. Recently, a growing interest in developing ecological and environmentally friendly extraction methods has led to investigating extraction procedures to obtain a higher extraction yield using a lower amount of solvents and energy. Herein, a new extraction procedure was developed to obtain an enriched pomegranate food supplement by using the peels of pomegranate, cultivar "Dente di Cavallo" and its juice. The extraction was performed through a non-conventional extraction technique like SLDE-Naviglio using ethanol and pomegranate juice as a solvent, and peels as a matrix. The extract was analysed by a combined approach based on LCESI/QExactive/MS/MS and NMR analysis, and its chemical profile was compared with those of pomegranate juice and of the extract obtained from peels by SLDE-Naviglio by using ethanol:H
2 O. The LC-MS analysis highlighted the presence of hydrolysable tannins, flavonoids, ellagic acid and phenol glucoside derivatives, while1 H NMR analysis completed the profile by detecting the primary metabolites. The LC-MS and1 H NMR analysis indicated that the extract obtained by SLDE-Naviglio using ethanol and pomegranate juice was enriched in the bioactives as confirmed by the highest phenolic, tannin and flavonoid content. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
50. Friend or foe?: The tumour microenvironment dilemma in colorectal cancer
- Author
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Colangelo, Tommaso, Polcaro, Giovanna, Muccillo, Livio, D'Agostino, Giovanna, Rosato, Valeria, Ziccardi, Pamela, Lupo, Angelo, Mazzoccoli, Gianluigi, Sabatino, Lina, and Colantuoni, Vittorio
- Published
- 2017
- Full Text
- View/download PDF
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