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Soldath P, Bianchi D, Manfredini B, Kjaer A, Langer SW, Knigge U, Melfi F, Filosso PL, Petersen RH. Prognostic Thresholds of Mitotic Count and Ki-67 Labeling Index for Recurrence and Survival in Lung Atypical Carcinoids. Cancers (Basel) 2024; 16:502. [PMID: 38339254 PMCID: PMC10854613 DOI: 10.3390/cancers16030502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/04/2024] [Accepted: 01/14/2024] [Indexed: 02/12/2024] Open
Abstract
Atypical carcinoid (AC) is a rare neuroendocrine neoplasm of the lung, which exhibits a varying malignant potential. In this study, we aimed to identify the prognostic thresholds of the mitotic count and Ki-67 labeling index for recurrence and survival in AC. We retrospectively reviewed 78 patients who had been radically resected for AC and calculated said thresholds using time-dependent receiver operating characteristic curves and the Youden index. We then dichotomized the patients into groups of above or below these thresholds and estimated the cumulative incidences of the groups using the Aalen-Johansen estimator. We compared the groups using univariable and multivariable Fine-Gray subdistribution hazard models. Our findings show that more patients recurred and died from this disease if their mitotic count exceeded three and four mitoses per 2 mm2, respectively, or if their Ki-67 labeling index exceeded 14% and 11%, respectively. Both thresholds independently predicted survival (p < 0.001 and p = 0.015, respectively). These thresholds may serve as a valuable tool for clinicians and researchers in making treatment plans and predicting outcomes for patients with AC.
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Affiliation(s)
- Patrick Soldath
- European Neuroendocrine Tumor Society Center of Excellence, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark; (A.K.); (S.W.L.); (U.K.); (R.H.P.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Cardiothoracic Surgery, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
| | - Daniel Bianchi
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41121 Modena, Italy; (D.B.); (P.L.F.)
| | - Beatrice Manfredini
- Minimally Invasive and Robotic Thoracic Surgery, Surgical, Medical, Molecular, and Critical Care Pathology Department, University of Pisa, 56126 Pisa, Italy; (B.M.); (F.M.)
| | - Andreas Kjaer
- European Neuroendocrine Tumor Society Center of Excellence, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark; (A.K.); (S.W.L.); (U.K.); (R.H.P.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Clinical Physiology and Nuclear Medicine & Cluster for Molecular Imaging, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Seppo W. Langer
- European Neuroendocrine Tumor Society Center of Excellence, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark; (A.K.); (S.W.L.); (U.K.); (R.H.P.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Oncology, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
| | - Ulrich Knigge
- European Neuroendocrine Tumor Society Center of Excellence, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark; (A.K.); (S.W.L.); (U.K.); (R.H.P.)
- Department of Surgical Gastroenterology, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
- Department of Endocrinology, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
| | - Franca Melfi
- Minimally Invasive and Robotic Thoracic Surgery, Surgical, Medical, Molecular, and Critical Care Pathology Department, University of Pisa, 56126 Pisa, Italy; (B.M.); (F.M.)
| | - Pier Luigi Filosso
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41121 Modena, Italy; (D.B.); (P.L.F.)
| | - René Horsleben Petersen
- European Neuroendocrine Tumor Society Center of Excellence, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark; (A.K.); (S.W.L.); (U.K.); (R.H.P.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
- Department of Cardiothoracic Surgery, Copenhagen University Hospital-Rigshospitalet, 2100 Copenhagen, Denmark
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Arrahli A, Kherbeche A, Derrouiche S, Bianchi D. Heats of adsorption of linear CO species on the Pt sites of a 1.2% Pt-2.7% Sn/Al2O3 catalyst before and after reconstruction and ageing processes. Res Chem Intermed 2021. [DOI: 10.1007/s11164-021-04533-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Guilhaume N, Bianchi D, Wandawa RA, Yin W, Schuurman Y. Study of CO2 and H2O adsorption competition in the combined dry / steam reforming of biogas. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.04.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Bianchi D, Scamporlino A, Costantini M, Cavallesco G, Morandi U, Stefani A. A case of cervico-mediastinal paraganglioma mimicking an ectopic goiter. Int J Surg Case Rep 2021; 86:106357. [PMID: 34464842 PMCID: PMC8408516 DOI: 10.1016/j.ijscr.2021.106357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/22/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction and importance Mediastinal paragangliomas are rare neuroendocrine tumors that originate from extra-adrenal paraganglia, occasionally secreting catecholamines. Nonfunctional mediastinal paragangliomas present nonspecific clinical and radiological features and represent a diagnostic challenge. Case presentation A 53-year old woman presented with cough and dyspnea increasing over time. CT-scan and ultrasonography showed a large vascularized cervico-mediastinal mass, consistent with an intrathoracic ectopic goiter. Preoperative angiography showed a blood supply from neck vessels. The lesion was completely removed through a cervical approach. The diagnosis of paraganglioma was a histological surprise. The patient is alive without recurrence 30 months after surgery. Clinical discussion When preoperatively diagnosed, the treatment of choice of a mediastinal paraganglioma is surgical excision. However, a preoperative diagnosis of mediastinal paraganglioma is difficult to obtain, especially in cases of nonfunctional lesions. Distinction between an intrathoracic goiter and a nonfunctional paraganglioma can be extremely difficult and, given the rarity of the latter, an ectopic goiter is suspected in first instance. CT-scan and ultrasonography are of little use in the differential diagnosis. However, scintigraphy with 123I-metaiodobenzylguanidine can be an useful diagnostic tool when a paraganglioma is suspected. In case of vascularized cervico-mediastinal mass, such as paragangliomas or intrathoracic goiter, preoperative angiography should be performed to study the blood supply and orient the surgical approach. Conclusion Although uncommon, paragangliomas should be considered in the differential diagnosis of mediastinal masses, especially when an ectopic goiter is suspected. Clinical diagnosis of mediastinal nonfunctioning paragangliomas is challenging. Mediastinal paragangliomas can mimic intrathoracic goiters. If a clinical suspicion of paraganglioma is raised, 123I-MIBG can be useful. In case of a vascularized cervico-mediastinal mass, an angiography is recommended. Angiography can detect the blood supply and guide the surgical approach.
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Affiliation(s)
- Daniel Bianchi
- Division of Thoracic Surgery, University of Modena and Reggio Emilia, Modena, Italy
| | - Adriana Scamporlino
- Division of Thoracic Surgery, University of Modena and Reggio Emilia, Modena, Italy; Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Matteo Costantini
- Department of Pathology, University Hospital of Modena, Modena, Italy.
| | | | - Uliano Morandi
- Division of Thoracic Surgery, University of Modena and Reggio Emilia, Modena, Italy.
| | - Alessandro Stefani
- Division of Thoracic Surgery, University of Modena and Reggio Emilia, Modena, Italy.
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Giraud F, Geantet C, Guilhaume N, Loridant S, Gros S, Porcheron L, Kanniche M, Bianchi D. Individual amounts of Lewis and Brønsted acid sites on metal oxides from NH3 adsorption equilibrium: Case of TiO2 based solids. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Salviato Pileggi G, Ferreira G, Gomides AP, Reis Neto E, Abreu M, Albuquerque C, Araújo N, Bacchiega AB, Bianchi D, Bica B, Bonfa E, Borba E, Brito D, Duarte A, Peixoto Gu e Silva de Souza M, Wagner Poti Gomes K, Maria Kakehasi A, Cavalheiro Do Espírito Santo R, Realle P, Klumb E, Lanna CC, Marques C, Monticielo O, Mota L, Munhoz G, Paiva E, Pereira H, Provenza JR, Ribeiro S, Rocha Jr L, Sampaio C, Sampaio V, Sato E, Laroca Skare T, De Souza V, Valim V, Lacerda M, Xavier R, Pinheiro M. POS1252 COVID-19 IN PATIENTS WITH RHEUMATIC DISEASES ON CHRONIC USE OF HYDROXYCHLOROQUINE IN A LARGE BRAZILIAN COHORT – A 24-WEEK PROSPECTIVE STUDY. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:The role of chronic use of hydroxychloroquine (HCQ) in rheumatic disease (RD) patients during the SARS-CoV-2 pandemic is still subject of discussion.Objectives:To compare the occurrence of COVID-19 and its outcomes between RD patients on HCQ use with individuals from the same household not taking the drug during community viral transmission in an observational prospective multicenter study in Brazil.Methods:Participants were enrolled and monitored through 24-week (From March 29th to Sep 30th, 2020) regularly scheduled phone calls performed by trained medical professionals. Epidemiological and demographic data, as well as RD disease activity status and current treatment data, specific information about COVID-19, hospitalization, need for intensive care, and death was recorded in both groups and stored in the Research Electronic Data Capture (REDCap) database. COVID-19 was defined according to the Brazilian Ministry of Health (BMH) criteria. The statistical analysis was performed using IBM-SPSS v.20.0 software. Group comparisons were made using the Man-Whitney, Chi-Square and Fisher Exact Test, as well as multivariate regression models adjusted to confounders. Survival curves were performed using Kaplan-Meier analysis.Results:A total of 10,427 participants mean age (SD) of 44.04 (14.98) years were enrolled, including 6004 (57.6%) rheumatic disease patients, of whom 70.8% had systemic lupus erythematosus (SLE), 6.7% rheumatoid arthritis (RA), 4% primary Sjögren’s syndrome (pSS), 1.8% mixed connective tissue disease (DMTC), 1% systemic sclerosis (SSc) and others (15.9), including overlap syndromes. In total, 1,132 (10.8%) participants fulfilled criteria for COVID-19, being 6.7% RD patients and 4.1% controls (p=0.002). A recent influenza vaccination had a protective role (p<0.001). Moderate and severe COVID-19 included the need for hospitalization, intensive care, mechanical ventilation or death. Infection severity was not different between groups (p=0.391) (Table 1). After adjustments for multiple confounders, the main risk factors significantly associated with COVID-19 were higher education level (OR=1.29 95%CI 1.05-1.59), being healthcare professionals (OR=1.91; 95%CI 1.45-2.53), presence of two comorbidities (OR=1.31; 95%CI 1.01-1.66) and three or more comorbidities associated (OR=1.69; 95%CI 1.23-2.32). Interestingly, age >=65 years (OR=0.20; 95%CI 0.11-0.34) was negatively associated. Regarding RD, the risk factors associated with COVID-19 diagnosys were SLE (OR= 2.37; 95%CI 1.92-293), SSc (OR=2.25; 95%CI 1.05-4.83) and rituximab use (OR=1.92; 95%CI 1.13-3.26). In addition, age >=65 years (OR=5.47; 95%CI 1.7-19.4) and heart disease (OR=2.60; 95%CI 1.06-6.38) were associated with hospitalization. Seven female RD patients died, six with SLE and one with pSS, and the presence of two or more comorbidities were associated with higher mortality rate.Conclusion:Chronic HCQ use did not prevent COVID-19 in RD compared to their household cohabitants. Health care profession, presence of comorbidities LES, SSc and rituximab were identified as main risk factors for COVID-19 and aging and heart disease as higher risk for hospitalization. Our data suggest these outcomes could be considered to manage them in clinical practice.Table 1.Frequency and severity of COVID-19 in patients with rheumatic diseases on chronic use of hydroxychloroquine compared to their household controlsCOVID-19 outcomesTotal(%)GroupsPPatients(%)Controls (%)DiagnosisNo9256 (89.1)5300 (88.3)3956 (90.2)0.002Yes1132 (10.9)704 (11.7)428 (9.8)SeverityMild1059 (93.6)662 (94.0)397 (92.8)0.391Moderate52 (4.6)32 (4.5)20 (4.7)Severe21 (1.9)10 (1.4)11 (2.6)HCQ: hydroxychloroquine.Moderate and severe COVID-19 included the need for any of the following: hospitalization, intensive care, mechanical ventilation or death.Acknowledgements:To the Brazilian Society of Rheumatology for technical support and rapid nationwide mobilization.To all the 395 interviewers (medical students and physicians) who collaborated in the study and the participantsTo CNPq (Number 403442/2020-6)Disclosure of Interests:None declared
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Couble J, Buniazet Z, Loridant S, Bianchi D. Acidity of SiO 2-Supported Metal Oxides in the Presence of H 2O Using the Adsorption Equilibrium Infrared Spectroscopy Method: 1. Adsorption and Coadsorption of NH 3 and H 2O on SiO 2. Langmuir 2020; 36:13371-13382. [PMID: 32970948 DOI: 10.1021/acs.langmuir.0c01716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The present study is dedicated to the characterization (identification, heats of adsorption, and coverages) of the adsorbed species formed by the adsorption and coadsorption of NH3 and H2O on two SiO2 solids. Adsorption equilibrium infrared spectroscopy allowed us (a) to show that NH3 and H2O are mostly adsorbed on free SiOH groups via H bonds and (b) to determine their individual heats of adsorption: 53 and 49 kJ/mol, whatever be their coverages (Langmuir adsorption model), for NH3ads and H2Oads, respectively. These values consistent with the microcalorimetry literature data explain that their coverages are decreased upon NH3-H2O coadsorption, considering a competitive Langmuir model. However, the temperature-programmed adsorption equilibrium procedure achieved from MS data indicated that a minor amount of other NH3 species (not detected using Fourier-transform infrared) is more strongly adsorbed and that hydrolysis of SiOSi siloxane by H2O could occur in parallel. NH3-H2O coadsorption leads to the formation of NH4+ species, which involves H2O adsorbed species. Both NH3 and H2O are not adsorbed above 450 K, which means that the SiO2 contribution to the characterization of the acidity of metal oxide catalysts supported on SiO2 using NH3 as the probe molecule in the presence of H2O is negligible above this temperature.
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Affiliation(s)
- J Couble
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - Z Buniazet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - S Loridant
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - D Bianchi
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
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Buniazet Z, Couble J, Maury S, Cabiac A, Loridant S, Bianchi D. Acidity of SiO 2-Supported Metal Oxides in the Presence of H 2O Using the AEIR Method: 2. Adsorption and Coadsorption of NH 3 and H 2O on TiO 2/SiO 2 Catalysts. Langmuir 2020; 36:13383-13395. [PMID: 32970949 DOI: 10.1021/acs.langmuir.0c01717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two different TiO2/SiO2 compounds containing TiO2 nanodomains dispersed over SiO2 were investigated applying the AEIR method at the adsorption equilibrium of NH3 and H2O from 300 to 723 K, particularly for the measurement of the individual heats of adsorption of the different species on Lewis acidic sites (LAS) and Brønsted acidic sites (BAS) as evaluation of the strength of the sites. It revealed two types of NH3 adsorption sites: the first ones could correspond either to NH3 species H-bonded to free OH groups or to coordinated weak LAS (named L1). The second ones (L2) were attributed to strongest LAS similar to those present at the surface of TiO2 nanocrystallites. They also correspond to the stronger adsorption sites of H2O. Two types of Brønsted acid sites (BAS) were additionally evidenced by the AEIR method and proposed to be specifically located on the Si-O-Ti bridging bonds at the TiO2/SiO2 interface. The heats of adsorption of the different adsorbed species provided by the AEIR method were consistent with literature data on average values of the heats of adsorption of NH3 and H2O from microcalorimetry measurements. The surface acidity of the two compounds in the presence of H2O was determined using NH3-H2O coadsorption. At T ≥ 473 K, the NH3 species on the L2 sites were not significantly displaced from the surface whatever the partial pressure of H2O studied in agreement with the Temkin competitive model using the individual heats of adsorption of the NH3 and H2O species. This model also revealed the presence of a small amount of H2O species adsorbed on L2 sites allowing H2O dissociation or/and hydrolysis of SiOTi or TiOTi bridges, leading to the formation of a much higher amount of BAS. Therefore, this original work combining the AEIR method and the Temkin competitive model provided new insights for understanding water effects on acidic oxide catalysts.
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Affiliation(s)
- Z Buniazet
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - J Couble
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - S Maury
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, F-69360 Solaize, France
| | - A Cabiac
- IFP Energies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, F-69360 Solaize, France
| | - S Loridant
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - D Bianchi
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
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Aramini B, Masciale V, Bianchi D, Manfredini B, Banchelli F, D'Amico R, Bertolini F, Dominici M, Morandi U, Maiorana A. ALDH Expression in Angiosarcoma of the Lung: A Potential Marker of Aggressiveness? Front Med (Lausanne) 2020; 7:544158. [PMID: 33195295 PMCID: PMC7662079 DOI: 10.3389/fmed.2020.544158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 06/05/2020] [Accepted: 10/09/2020] [Indexed: 12/22/2022] Open
Abstract
Background: Primary angiosarcoma of the lung is a very aggressive rare malignant disease resulting in a severe prognosis (1). This type of cancer represents about 2% of all soft tissue sarcomas and has a high rate of metastasis through the hematogenous route. For the rarity of this malignant vascular tumor it is still challenging to set a diagnosis (1). The diagnostic features that have thus far been considered include primarily clinical and radiological findings. In some cases, immunohistochemical characteristics based on the most common markers used in pathology have been described. The aim of this report is to present two cases of angiosarcoma of the lung in which the aldehyde dehydrogenase (ALDH) marker was analyzed by immunohistochemistry. Methods: We report two cases of angiosarcoma of the lung in patients underwent lung surgery at our Unit. In addition to the standard histopathological analysis for this disease, immunohistochemistry using an ALDH1A1 antibody was performed in both of the cases. For ALDH quantification, a semi-quantitative method based on the positivity of the tumor cells was used: 0 (<5%), 1 (5–25%), 2 (>25–50%), 3 (>50–75%), 4 (>75%). Results: One patient with recurrent lung disease survived, achieving complete remission after chemo- and radiotherapy. The second patient died of recurrent disease within 5 years of diagnosis. ALDH1A1 was evaluated in both of these cases using an immunohistochemistry scoring system based on the positivity for this marker. The scores were consistent with the patients' clinical outcomes, as the lower (score 1) was observed in the patient with the better clinical outcome, while the higher (score 3) was seen in the patient with the worse outcome. Conclusion: Our data suggest that ALDH may be an important clinical marker in angiosarcoma of the lung. Although further studies need to be performed in a larger cohort of patients, we believe that, if the results will be confirmed, ALDH1A1 may be used to stratify patients in terms of prognosis and for targeted therapy.
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Affiliation(s)
- Beatrice Aramini
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Valentina Masciale
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Daniel Bianchi
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Beatrice Manfredini
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Federico Banchelli
- Department of Medical and Surgical Sciences, Center of Statistic, University of Modena and Reggio Emilia, Modena, Italy
| | - Roberto D'Amico
- Department of Medical and Surgical Sciences, Center of Statistic, University of Modena and Reggio Emilia, Modena, Italy
| | - Federica Bertolini
- Division of Oncology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Massimo Dominici
- Division of Oncology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Uliano Morandi
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Antonino Maiorana
- Department of Medical and Surgical Sciences, Institute of Pathology, University of Modena and Reggio Emilia, Modena, Italy
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Aramini B, Masciale V, Manfredini B, Bianchi D, Banchelli F, D'Amico R, Bertolini F, Dominici M, Morandi U, Maiorana A. Expression of ALDH and SOX-2 in Pulmonary Sclerosing Pnemocytoma (PSP) of the Lung: Is There a Meaning Behind? Front Med (Lausanne) 2020; 7:497. [PMID: 32984377 PMCID: PMC7492541 DOI: 10.3389/fmed.2020.00497] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 05/05/2020] [Accepted: 07/20/2020] [Indexed: 01/08/2023] Open
Abstract
Background: Pulmonary sclerosing pneumocytoma (PSP) is a rare benign pulmonary tumor that derives from primitive respiratory epithelium of the pulmonary alveolus. The etiology and pathogenesis are still unclear. Histopathological diagnosis focuses on cells that are positive for TTF1, EMA, cytokeratin-7, and CAM 5.2. The aim of our study is to highlight the elevated expression of ALDH and the presence of SOX-2 in pulmonary sclerosing pneumocytoma. Methods: We report five cases of pulmonary sclerosing pneumocytoma undergone surgery at our Division of Thoracic Surgery, during a period between 1994 and 2011. ALDH and SOX-2 markers were also tested for positivity in all the patients. Results: Patients showed elevated expression of ALDH during immunohistochemistry and mild expression of SOX-2, although in two cases in which SOX-2 was highly expressed. Among these two patients, one presented with lymph node recurrence while the other had no recurrence with a PET-positive nodule. In particular, the patient who had developed recurrence had an ALDH score of 4 and a SOX-2 score of 3, whereas the patient with the PET-positive nodule showed an ALDH score of 4 with a mild SOX-2 expression of score 1. Conclusions: This is the first attempt demonstrating the elevated expression of ALDH in this disease. SOX-2 expression was noted in both the patient who developed recurrence and the patient with a PET-positive nodule. We believe that further investigation may be highly useful to better characterize these two markers as well as understand their function.
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Affiliation(s)
- Beatrice Aramini
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Valentina Masciale
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Beatrice Manfredini
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Daniel Bianchi
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Federico Banchelli
- Department of Medical and Surgical Sciences, Center of Statistic, University of Modena and Reggio Emilia, Modena, Italy
| | - Roberto D'Amico
- Department of Medical and Surgical Sciences, Center of Statistic, University of Modena and Reggio Emilia, Modena, Italy
| | - Federica Bertolini
- Division of Oncology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Massimo Dominici
- Division of Oncology, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Uliano Morandi
- Division of Thoracic Surgery, Department of Medical and Surgical Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Antonino Maiorana
- Department of Medical and Surgical Sciences, Institute of Pathology, University of Modena and Reggio Emilia, Modena, Italy
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Bianchi D. Advance directives: Addressing the obligations of support as part of the right of a person with disabilities to equal recognition before the law? Int J Law Psychiatry 2020; 70:101561. [PMID: 32482299 DOI: 10.1016/j.ijlp.2020.101561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
Depending upon how they are regulated in domestic law, advance directives (ADs) can enable persons to make decisions that have legal effect in the future as directed in the AD. There is some agreement in the academic literature that ADs are a legitimate way of giving effect to the obligations arising from Article 12 (3) of the United Nations Convention on the Rights of Persons with Disabilities to take appropriate measures to provide access by persons with disabilities (PWDs) to the support they may require in exercising their legal capacity. It is the purpose of this article to question when and how ADs address the obligations of support arising from Article 12 (3), concluding that it cannot and should not be assumed that ADs address those obligations only because they embody and give effect to their maker's agency. The article instead highlights the questions that must be posed to obtain legal certainty as to when and how ADs will be a form of Article 12 (3) support. The article also refutes some of the instances in the academic literature when ADs have been presented as support, while offering an account as to how the regulation of ADs should be reconsidered in order to specifically address the obligations arising from Article 12 (3) both when PWDs can and when they cannot communicate their wishes to others.
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Affiliation(s)
- Daniel Bianchi
- Faculty of Laws, University of Malta, Msida MSD 2080, Malta; School of Social Sciences, University of Manchester, Williamson Building, Oxford road, Manchester M13 9PL, United Kingdom.
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Harcken C, Scholl P, Nabozny G, Thomson D, Bianchi D. Clinical profile of the functionally selective glucocorticoid receptor agonist BI 653048 in healthy male subjects. Expert Opin Investig Drugs 2019; 28:489-496. [PMID: 30908082 DOI: 10.1080/13543784.2019.1599859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 12/16/2022]
Abstract
BACKGROUND An efficacious anti-inflammatory corticosteroid with reduced side effects has been long sought. We report the pooled results from three clinical proof-of-mechanism Phase I studies of BI 653048 in healthy subjects, a functionally selective, nonsteroidal glucocorticoid (GC). RESEARCH DESIGN AND METHODS Three Phase I trials were conducted: a single rising-dose study and a multiple rising-dose study to evaluate the safety, tolerability, and pharmacokinetics of BI 653048, and a multiple parallel-arm-dose study with intravenous lipopolysaccharide challenge to assess in vivo pharmacodynamics. The pharmacodynamics, efficacy, and safety of BI 653048 and prednisolone were compared. RESULTS Treatment with 200 mg BI 653048 was associated with a reduced expression of IL1R2, ITGB3, and SDPR versus 20 mg prednisolone; comparable levels of FKBP5, ZBTB16, and DDIT4 expression were observed. Changes in C-peptide, glucose, insulin, and cortisol were moderate compared with prednisolone. A greater reduction of osteocalcin was observed with 200 mg BI 653048 versus 20 mg prednisolone. Comparable anti-inflammatory efficacy was demonstrated for 200 mg BI 653048 and 20 mg prednisolone. BI 653048 was well tolerated in healthy subjects. CONCLUSION BI 653048 demonstrated the desired anti-inflammatory effects of the nonsteroidal GC; however, the undesirable side-effect profile associated with GC steroids could not be disassociated from BI 653048. TRIAL REGISTRATION ClinicalTrials.gov identifiers NCT02217644, NCT02217631, and NCT02224105.
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Affiliation(s)
- Christian Harcken
- a Boehringer Ingelheim Pharmaceuticals, Inc ., Ridgefield , CT , USA
| | - Paul Scholl
- a Boehringer Ingelheim Pharmaceuticals, Inc ., Ridgefield , CT , USA
| | - Gerald Nabozny
- a Boehringer Ingelheim Pharmaceuticals, Inc ., Ridgefield , CT , USA
| | - David Thomson
- a Boehringer Ingelheim Pharmaceuticals, Inc ., Ridgefield , CT , USA
| | - Daniel Bianchi
- a Boehringer Ingelheim Pharmaceuticals, Inc ., Ridgefield , CT , USA
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Arrahli A, Kherbeche A, Bianchi D. Surface reconstruction of Pt–Sn nanoparticles supported on Al2O3 in the presence of carbon monoxide. Res Chem Intermed 2018. [DOI: 10.1007/s11164-018-3686-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Palareti G, Biagi G, Legnani C, Bianchi D, Serra D, Savini R, Coccheri S. Association of Reduced Factor VIII with Impaired Platelet Reactivity to Adrenalin and Collagen after Total Thyroidectomy. Thromb Haemost 2018. [DOI: 10.1055/s-0038-1647116] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
SummaryTwenty-one thyroprival patients, previously submitted to total thyroidectomy for tumours, were investigated during stabilized L-thyroxine supplementation and at the end of a 20-25 day “no-therapy” period, necessary for a 131I total body scintigraphy. During supplementation therapy a lower than normal mean betathromboglobulin (beta-TG) release level was found, the other blood clotting and platelet function tests being normal. After substitution therapy withdrawal, platelet function tests showed reduced adrenalin aggregation, increased collagen threshold aggregating concentrations, decreased beta-TG release values and reduced aggregation to ristocetin, whereas blood clotting tests showed prolonged aPTT values and reduced levels of factor VIII: C and vWf: Ag. We conclude that in acquired hypothyroidism the lowering of factor VIII: C and vWf: Ag (acquired von Wille brand disease) is associated with impaired platelet reactivity not only to ristocetin but also to collagen and especially adrenalin. In the patients investigated these changes were almost completely corrected by substitutive therapy with L-thyroxine at clinically effective doses.
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Affiliation(s)
- G Palareti
- The Dept. of Angiology and Blood Coagulation, University of Bologna, Italy
| | - G Biagi
- The Dept. of Angiology and Blood Coagulation, University of Bologna, Italy
| | - C Legnani
- The Dept. of Angiology and Blood Coagulation, University of Bologna, Italy
| | - D Bianchi
- The Division of Internal Medicine, Bentivoglio Hospital, Bologna, Italy
| | - D Serra
- The Institute of Medical Pathology, University of Bologna, Italy
| | - R Savini
- The Institute of Medical Pathology, University of Bologna, Italy
| | - S Coccheri
- The Dept. of Angiology and Blood Coagulation, University of Bologna, Italy
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Abstract
Serum CA-125 was determind in 60 patients with variously extended ovarian cancer and monitored during and after chemotherapy. The study indicates that: 1) prechemotherapy CA-125 shows the presence of an active disease with an accuracy > 85%. The antigen is elevated in 97% of patients with > 2 cm disease, but sensitivity is low (67%) in patients with minimal residual disease (< 2 cm); 2) changes in CA-125 correspond well with the response to chemotherapy. CA-125 becomes negative in every patient having clinical CR and increases in every patient with progressive disease. These changes can indicate the type of response some months ahead of time; 3) CA-125 indicates in advance the recurrence of the disease after an objective remission: 4) In the conditions studied CA-125 basal levels do not seem to have prognostic value as regarding either response or survival.
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Affiliation(s)
- A Martoni
- Division of Oncology, University of Bologna
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Topazio L, Perugia C, De Nunzio C, Gaziev G, Iacovelli V, Bianchi D, Vespasiani G, Finazzi Agrò E. Intravescical prostatic protrusion is a predictor of alpha blockers response: results from an observational study. BMC Urol 2018; 18:6. [PMID: 29394926 PMCID: PMC5797399 DOI: 10.1186/s12894-018-0320-0] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 01/24/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND To investigate the efficacy of tamsulosin in patients with lower urinary tract symptoms (LUTS) and benign prostatic enlargement (BPE) with intravesical prostatic protrusion (IPP). Ultrasound measurement of the IPP has been previously described as an effective instrument for the evaluation of benign prostatic obstruction (BPO) and could help in clarifying the role of alpha-blockers in patients with (BPE). METHODS Patients with BPE and LUTS were enrolled in this observational study. Intravesical prostatic protrusion was graded as grade 1 (< 5 ml), 2 (5 < IPP < 10 ml) and 3 (> 10 ml). Patients were treated with tamsulosin for twelve weeks. Evaluation was performed before and at the end of treatment by means of International Prostate Symptom Score (IPSS) and uroflowmetry. Patients were considered responders if a reduction of IPSS > 3 points was reported. RESULTS One hundred forty-two patients were enrolled. Twelve patients were excluded because of incomplete data. Fifty patients showed an IPP grade 1 (group A), 52 a grade 2 (group B) and 28 a grade 3 (group C). Treatment success was obtained in 82%, 38,5% and 7,1% of patients respectively; these differences (group A vs B-C and group B vs C) were highly significant. The odd ratio to obtain a treatment success was of 59 and 8.1 in group A and group B respectively, in comparison to group C. After a multivariate regression, the relationship between IPP grade and treatment success remained significant. Improvement of uroflowmetry parameters has been reported in all the groups especially in patients with a low grade IPP (p value = 0,016 group A vs group B; p value = 0,005 group A vs group C). Prostate volume seems not to influence this relationship. CONCLUSIONS Intravesical prostatic protrusion has found to be significantly and inversely correlated with treatment success in patients with LUTS and BPE under alpha-blockers therapy. Alpha blockers odd ratio of success is 59 times higher in patients with a low grade IPP in comparison to patients with a high grade.
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Affiliation(s)
- L Topazio
- School of Specialization in Urology, University "Tor Vergata", Rome, Italy.
| | - C Perugia
- School of Specialization in Urology, University "Tor Vergata", Rome, Italy
| | - C De Nunzio
- Department of Urology, Sant'Andrea Hospital, University "La Sapienza", Rome, Italy
| | - G Gaziev
- School of Specialization in Urology, University "Tor Vergata", Rome, Italy
| | - V Iacovelli
- School of Specialization in Urology, University "Tor Vergata", Rome, Italy
| | - D Bianchi
- School of Specialization in Urology, University "Tor Vergata", Rome, Italy
| | - G Vespasiani
- Department of Experimental Medicine and Surgery, University "Tor Vergata", Rome, Italy
| | - E Finazzi Agrò
- Department of Experimental Medicine and Surgery, University "Tor Vergata", Rome, Italy
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Wingfield LR, Liu J, Hu M, Bianchi D, Hauck K, Driscoll B, Gallin JI, Malech HL, Holland SM, Van Waes C. Nine patients with chronic granulomatous disease having selective neck dissection for severe cervical lymphadenitis. Clin Otolaryngol 2017; 43:335-340. [PMID: 28727298 DOI: 10.1111/coa.12943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/09/2017] [Indexed: 11/30/2022]
Affiliation(s)
- L R Wingfield
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - J Liu
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - M Hu
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - D Bianchi
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - K Hauck
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - B Driscoll
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
| | - J I Gallin
- Laboratory of Host Defenses, National Institutes of Health, Bethesda, MD, USA
| | - H L Malech
- Laboratory of Host Defenses, National Institutes of Health, Bethesda, MD, USA
| | - S M Holland
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - C Van Waes
- Head and Neck Surgery Branch, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, USA
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Couble J, Bianchi D. Experimental microkinetic approach of the CO/H2 reaction on Pt/Al2O3 using the Temkin formalism. 2. Coverages of the adsorbed CO and hydrogen species during the reaction and rate of the CH4 production. J Catal 2017. [DOI: 10.1016/j.jcat.2017.05.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Couble J, Bianchi D. Experimental microkinetic approach of the CO/H2 reaction on Pt/Al2O3 using the Temkin formalism. 1. Competitive chemisorption between adsorbed CO and hydrogen species in the absence of reaction. J Catal 2017. [DOI: 10.1016/j.jcat.2017.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Vergnon P, Bianchi D, Benali Chaoui R, Coudurier G. Préparation et caractérisation de trioxyde de molybdène très divisé : étude par spectroscopie infrarouge de son interaction avec l'eau. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1980771043] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Galbraith ED, Carozza DA, Bianchi D. A coupled human-Earth model perspective on long-term trends in the global marine fishery. Nat Commun 2017; 8:14884. [PMID: 28345669 PMCID: PMC5556735 DOI: 10.1038/ncomms14884] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 02/08/2017] [Indexed: 11/09/2022] Open
Abstract
The global wild marine fish harvest increased fourfold between 1950 and a peak value near the end of the 20th century, reflecting interactions between anthropogenic and ecological forces. Here, we examine these interactions in a bio-energetically constrained, spatially and temporally resolved model of global fisheries. We conduct historical hindcasts with the model, which suggest that technological progress can explain most of the 20th century increase of fish harvest. In contrast, projections extending this rate of technological progress into the future under open access suggest a long-term decrease in harvest due to over-fishing. Climate change is predicted to gradually decrease the global fish production capacity, though our model suggests that this is of secondary importance to social and economic factors. Our study represents a novel way to integrate human-ecological interactions within a single model framework for long-term simulations.
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Affiliation(s)
- E D Galbraith
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, Barcelona 08010, Spain.,Department of Mathematics, Institut de Ciència i Tecnologia Ambientals (ICTA), Universitat Autònoma de Barcelona, Barcelona 08193, Spain.,Department of Earth and Planetary Sciences, McGill University, Montreal, Québec H3A 0E8, Canada
| | - D A Carozza
- Department of Earth and Planetary Sciences, McGill University, Montreal, Québec H3A 0E8, Canada.,Department of Mathematics, Université du Québec à Montréal, Montréal, Québec H3C 3P8, Canada
| | - D Bianchi
- Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095, USA
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Jbir I, Couble J, Khaddar-Zine S, Ksibi Z, Meunier F, Bianchi D. Individual Heat of Adsorption of Adsorbed CO Species on Palladium and Pd–Sn Nanoparticles Supported on Al2O3 by Using Temperature-Programmed Adsorption Equilibrium Methods. ACS Catal 2016. [DOI: 10.1021/acscatal.5b02749] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Imen Jbir
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Julien Couble
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Sihem Khaddar-Zine
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Zouhaier Ksibi
- Laboratoire
de Chimie des Matériaux et Catalyse, Faculté des Sciences
de Tunis, Université de Tunis EL Manar, 2092 Tunis, France
| | - Fréderic Meunier
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Daniel Bianchi
- Institut
de Recherche sur la Catalyse et l’Environnement de Lyon (IRCELYON),
UMR 5256 CNRS, Université Claude Bernard Lyon I, Bat. Chevreul, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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Nasrollah N, Trimboli P, Bianchi D, Taccogna S. Neck schwannoma diagnosed by core needle biopsy: a case report. J Ultrasound 2015; 18:407-10. [PMID: 26550065 PMCID: PMC4630276 DOI: 10.1007/s40477-014-0112-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 06/02/2014] [Indexed: 12/16/2022] Open
Abstract
Here we present a case of a 58 year old man referred to our hospital to undergo neck and thyroid ultrasonography (US) following palpable neck mass. US revealed a solid hypoechoic nodule in right thyroid lobe, and a solid lesion on the right laterocervical neck region with ultrasound suspicious features of neoplastic lymph node. In order to achieve a diagnosis of the neck mass and to get a proper evaluation of the thyroid nodule, we decided to perform a fine-needle aspiration (FNA) of both lesions. At cytopathologic examination the thyroid nodule appeared as benign, while cytologic sampling of the neck lesion was inadequate for a proper evaluation. Thus, we performed core needle biopsy (CNB) of the neck lesion like recently proposed for thyroid lesions; also, to definitively exclude malignancy of thyroid nodule, this also underwent CNB. Histologic report of CNB confirmed benign thyroid nodule, while the neck lesion revealed a proliferation of neuronal type consistent with schwannoma. The patient has been addressed to clinical and ultrasonographic follow-up. CNB appears as a safe and minimally-invasive approach to diagnose indeterminate neck masses and avoid unnecessary diagnostic surgery.
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Affiliation(s)
- N. Nasrollah
- />Section of Surgery, Ospedale Israelitico, Via Fulda, 14, 00148 Rome, Italy
| | - P. Trimboli
- />Section of Endocrinology and Diabetology, Ospedale Israelitico, Rome, Italy
| | - D. Bianchi
- />Section of Surgery, Policlinico Tor Vergata, Rome, Italy
| | - S. Taccogna
- />Section of Pathology, Ospedale Israelitico, Rome, Italy
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Leclercq J, Giraud F, Bianchi D, Gaillard F. Study of thin films of yttria-stabilized zirconia (YSZ) for the oxidation of some volatile organic compounds. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Bianchi D, Katona L, Brenner J, Vorlaufer G, Vernes A, Werner W. Numerical approximation of AR-XPS spectra for rough surfaces considering the effect of electron shadowing. SURF INTERFACE ANAL 2014. [DOI: 10.1002/sia.5632] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- D. Bianchi
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 Wiener Neustadt 2700 Austria
| | - L. Katona
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 Wiener Neustadt 2700 Austria
| | - J. Brenner
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 Wiener Neustadt 2700 Austria
| | - G. Vorlaufer
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 Wiener Neustadt 2700 Austria
| | - A. Vernes
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 Wiener Neustadt 2700 Austria
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10 /134, 1040 Vienna Austria
| | - W. S. M. Werner
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10 /134, 1040 Vienna Austria
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Leclercq J, Giraud F, Bianchi D, Fiaty K, Gaillard F. New catalytic system for oxidation of isopropyl alcohol with thin film catalysts. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2013.12.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Zaitan H, Korrir A, Chafik T, Bianchi D. Evaluation of the potential of volatile organic compound (di-methyl benzene) removal using adsorption on natural minerals compared to commercial oxides. J Hazard Mater 2013; 262:365-376. [PMID: 24061215 DOI: 10.1016/j.jhazmat.2013.08.071] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2013] [Revised: 08/26/2013] [Accepted: 08/27/2013] [Indexed: 05/28/2023]
Abstract
This study is dedicated to the investigation of the potential of volatile organic compounds (VOC) adsorption over low cost natural minerals (bentonite and diatomite). The performances of these solids, in terms of adsorption/desorption properties, were compared to commercial adsorbents, such as silica, alumina and titanium dioxide. The solids were first characterized by different physico-chemical methods and di-methyl benzene (dMB) was selected as model VOC pollutant for the investigation of adsorptive characteristics. The experiments were carried out with a fixed bed reactor under dynamic conditions using Fourier Transform InfraRed spectrometer to measure the evolution of dMB concentrations in the gaseous stream at the outlet of the reactor. The measured breakthrough curves yields to adsorbed amounts at saturation that has been used to obtain adsorption isotherms. The latters were used for determination of the heat involved in the adsorption process and estimation of its values using the isosteric method. Furthermore, the performances of the studied materials were compared considering the adsorption efficiency/cost ratio.
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Affiliation(s)
- Hicham Zaitan
- Laboratory LCMC, Faculty of Sciences and Techniques, University Sidi Mohamed BenAbdellah, B.P. 2202, Fez, Morocco.
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van der Hoorn ML, van Lochem A, Swings G, van Beelen E, van der Keur C, Blois S, Tirado-Gonzales I, Karumanchi A, Bianchi D, Claas F, Scherjon S. Differential immunoregulation in successful oocyte donation pregnancies compared with naturally conceived pregnancies. J Reprod Immunol 2012. [DOI: 10.1016/j.jri.2012.03.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Affiliation(s)
- L. Katona
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2; A-2700; Wiener Neustadt; Austria
| | - D. Bianchi
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2; A-2700; Wiener Neustadt; Austria
| | - J. Brenner
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2; A-2700; Wiener Neustadt; Austria
| | - G. Vorlaufer
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2; A-2700; Wiener Neustadt; Austria
| | | | - G. Betz
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10/134; A-1040; Vienna; Austria
| | - W. S. M. Werner
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10/134; A-1040; Vienna; Austria
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Bianchi D, Katona L, Brenner J, Vorlaufer G, Vernes A, Werner WSM, Betz G. Surface roughness, waviness, and shape induced effects in angle-resolved XPS. SURF INTERFACE ANAL 2011. [DOI: 10.1002/sia.3858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- D. Bianchi
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 A-2700 Wiener Neustadt Austria
| | - L. Katona
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 A-2700 Wiener Neustadt Austria
| | - J. Brenner
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 A-2700 Wiener Neustadt Austria
| | - G. Vorlaufer
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 A-2700 Wiener Neustadt Austria
| | - A. Vernes
- Austrian Center of Competence for Tribology; Viktor-Kaplan-Straße 2 A-2700 Wiener Neustadt Austria
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10 /134 A-1040 Vienna Austria
| | - W. S. M. Werner
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10 /134 A-1040 Vienna Austria
| | - G. Betz
- Institute of Applied Physics; Vienna University of Technology; Wiedner Hauptstraße 8-10 /134 A-1040 Vienna Austria
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Bassou B, Guilhaume N, Iojoiu EE, Farrusseng D, Lombaert K, Bianchi D, Mirodatos C. High-throughput approach to the catalytic combustion of diesel soot II: Screening of oxide-based catalysts. Catal Today 2011. [DOI: 10.1016/j.cattod.2010.05.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Aresta A, Bianchi D, Calvano C, Zambonin C. Solid phase microextraction—Liquid chromatography (SPME-LC) determination of chloramphenicol in urine and environmental water samples. J Pharm Biomed Anal 2010; 53:440-4. [DOI: 10.1016/j.jpba.2010.05.011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Garbero V, Dellacasa G, Bianchi D, Magnoni M, Erbetta L. Outdoor radon concentration measurements: some correlation with major urban pollutants. Radiat Prot Dosimetry 2009; 137:332-335. [PMID: 19906661 DOI: 10.1093/rpd/ncp253] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Air pollutants concentration in the urban air strongly depends on the properties of the planetary boundary layer (the lower region of the atmosphere), roughly up to 1 km from Earth's surface. Radioactive radon gas has been recognised by various authors as a valuable natural tracer of transport and dispersion within this layer. To achieve a better comprehension of the urban pollution dynamic in the town of Alessandria, situated in the Po Valley in the north-west of Italy, a system for continuous measurement of radon concentration in outdoor air was experimented. This paper presents the first results obtained: the hourly trend of radon concentration in the diurnal course during different seasons and its correlation with the concentration of the major urban pollutants.
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Affiliation(s)
- V Garbero
- Dipartimento di Scienze e Tecnologie Avanzate, Università del Piemonte Orientale, Via Bellini 25/G, 15100 Alessandria, Italy
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Tonini G, Rosini R, Teppa A, Aulenti V, Kalantary F, Tosana M, Bianchi D, Zorzi F. [Adenoid cystic/basal cell carcinoma of the prostate:case report]. Urologia 2008; 75:245-248. [PMID: 21086341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Although most prostate carcinomas belong to the conventional acinar type, unusual variants have been reported. The adenoid cystic/basal cell carcinoma of the prostate is a rare tumor with distinctive histopathologic features. There are quite few publications in the literature concerning the diagnosis, treatment, and prognosis of this neoplasm. METHODS. A 71-year-old man had an increased PSA value (5.11 ng/dL); the prostatic biopsy examination was positive for adenoid cystic/basal cell carcinoma. For this reason we proceeded with radical prostatectomy. The histology examination showed an acinar conventional carcinoma and adenoid cystic/basal cell carcinoma. At eight months the patient did not show any recurrence. CONCLUSIONS. Various histologic and immunohistochemical features are helpful in recognizing the adenoid cystic/basal cell carcinoma of the prostate. Clinically, the only difference from a conventional adenocarcinoma is that the PSA value is usually normal or only slightly increased. This tumor has a biological potential that can result in metastases in some cases; the current treatment consists primarily in the surgical resection. A close, long-term follow-up is strongly recommended.
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Abstract
Although most prostate carcinomas belong to the conventional acinar type, unusual variants have been reported. The adenoid cystic/basal cell carcinoma of the prostate is a rare tumor with distinctive histopathologic features. There are quite few publications in the literature concerning the diagnosis, treatment, and prognosis of this neoplasm. Methods. A 71-year-old man had an increased PSA value (5.11 ng/dL); the prostatic biopsy examination was positive for adenoid cystic/basal cell carcinoma. For this reason we proceeded with radical prostatectomy. The histology examination showed an acinar conventional carcinoma and adenoid cystic/basal cell carcinoma. At eight months the patient did not show any recurrence. Conclusions. Various histologic and immunohistochemical features are helpful in recognizing the adenoid cystic/basal cell carcinoma of the prostate. Clinically, the only difference from a conventional adenocarcinoma is that the PSA value is usually normal or only slightly increased. This tumor has a biological potential that can result in metastases in some cases; the current treatment consists primarily in the surgical resection. A close, long-term follow-up is strongly recommended.
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Affiliation(s)
- G. Tonini
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - R. Rosini
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - A. Teppa
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - V. Aulenti
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - F. Kalantary
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - M. Tosana
- Divisione di Urologia, Fondazione Poliambulanza, Brescia
| | - D. Bianchi
- Divisione di Anatomia Patologica, Fondazione Poliambulanza, Brescia
| | - F. Zorzi
- Divisione di Anatomia Patologica, Fondazione Poliambulanza, Brescia
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Arsac F, Bianchi D, Chovelon J, Conchon P, Ferronato C, Lair A, Sleiman M. Photocatalytic degradation of organic pollutants in water and in air. An analytical approach. Materials Science and Engineering: C 2008. [DOI: 10.1016/j.msec.2007.10.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zaitan H, Bianchi D, Achak O, Chafik T. A comparative study of the adsorption and desorption of o-xylene onto bentonite clay and alumina. J Hazard Mater 2008; 153:852-859. [PMID: 17977653 DOI: 10.1016/j.jhazmat.2007.09.070] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Revised: 09/10/2007] [Accepted: 09/11/2007] [Indexed: 05/25/2023]
Abstract
In this paper, adsorptive performance of natural clay of bentonite type has been investigated as a potential VOC adsorbent on the basis its promising physical-chemical and morphological properties which were compared to commercial gamma-Al(2)O(3) solid. The vapour-solid adsorption isotherms of xylene were measured at different temperatures ranging from 300 to 373 K using dynamical method and the obtained data confronted to classical models such as Langmuir and Freundlich. On the other hand, the solids physico-chemical characteristics and adsorptive performances were correlated to some cost aspects because of their importance for design and engineering of adsorption plant. The results shows the interest of a local clay natural of bentonite type for treatment of VOCs emitted in working places regarding its performances and lower cost.
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Affiliation(s)
- Hicham Zaitan
- Laboratoire d'Application de la Chimie à l'Environnement, Université Claude Bernard Lyon 1, Bat Raulin, Villeurbanne, France.
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Kapp N, Jeong Y, Borgatta L, Peter I, Johnson K, Bianchi D. P-908. Fertil Steril 2006. [DOI: 10.1016/j.fertnstert.2006.07.1300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Arsac F, Bianchi D, Chovelon JM, Ferronato C, Herrmann JM. Experimental Microkinetic Approach of the Photocatalytic Oxidation of Isopropyl Alcohol on TiO2. Part 1. Surface Elementary Steps Involving Gaseous and Adsorbed C3HxO Species. J Phys Chem A 2006; 110:4202-12. [PMID: 16553371 DOI: 10.1021/jp055342b] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [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: 11/29/2022]
Abstract
The present study concerns an experimental microkinetic approach of the photocatalytic oxidation (PCO) of isopropyl alcohol (IPA) into acetone on a pure anatase TiO2 solid according to a procedure previously developed. Mainly, the kinetic parameters of each surface elementary step of a plausible kinetic model of PCO of IPA are experimentally determined: natures and amounts of the adsorbed species and rate constants (preexponential factor and activation energy). The kinetics parameters are obtained by using experiments in the transient regime with either a FTIR or a mass spectrometer as a detector. The deep oxidation (CO2 and H2O formation) of low concentrations of organic pollutants in air is one of the interests of the PCO. For IPA, literature data strongly suggest that acetone is the single route to CO2 and H2O and this explains that the present study is dedicated to the elementary steps involving gaseous and adsorbed C3H(x)O species. The microkinetic study shows that strongly adsorbed IPA species (two species denoted nd-IPA(sads) and d-IPA(sads) due to non- and dissociative chemisorption of IPA, respectively) are involved in the PCO of IPA. A strong competitive chemisorption between IPA(sads) and a strongly adsorbed acetone species controls the high selectivity in acetone of the PCO at a high coverage of the surface by IPA(sads). The kinetic parameters of the elementary steps determined in the present study are used in part 2 to provide a modeling of macroscopic kinetic data such as the turnover frequency (TOF in s(-1)) of the PCO using IPA/O2 gas mixtures.
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Affiliation(s)
- F Arsac
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-1, Bat. Raulin, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne-France
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Arsac F, Bianchi D, Chovelon JM, Ferronato C, Herrmann JM. Experimental Microkinetic Approach of the Photocatalytic Oxidation of Isopropyl Alcohol on TiO2. Part 2. From the Surface Elementary Steps to the Rates of Oxidation of the C3HxO Species. J Phys Chem A 2006; 110:4213-22. [PMID: 16553372 DOI: 10.1021/jp057255p] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [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: 11/29/2022]
Abstract
The present study concerns an experimental microkinetic approach of the photocatalytic oxidation (PCO) of isopropyl alcohol (IPA) into acetone on a pure anatase TiO2 solid according to a procedure previously developed. Mainly, the kinetic parameters of each surface elementary step of a plausible kinetic model of the PCO of IPA are experimentally determined: natures and amounts of the adsorbed species and rate constants (preexponential factors and activation energies). These kinetic parameters are used to evaluate a priori the catalytic activity (turnover frequency, TOF, in s(-1)) of the solid that is compared to the experimental value. The kinetics parameters are obtained by using experiments in the transient regime with either a FTIR or a mass spectrometer as a detector. The microkinetic study shows that only strongly adsorbed IPA species (two species denoted nd-IPA(sads) and d-IPA(sads) due to non- and dissociative chemisorption of IPA respectively) are involved in the PCO of IPA. A strong competitive chemisorption between IPA(sads) and a strongly adsorbed acetone species controls the high selectivity in acetone of the PCO at a high coverage of the surface by IPA(sads). The apparent rate constant (1.4 10(-3) s(-1)) of the Langmuir-Hinshelwood elementary step between IPA(sads) and the active oxygen containing species generated by the UV irradiation provides the TOF of the PCO for IPA/O2 gas mixtures. The kinetic parameters of the elementary steps determined by the experimental microkinetic approach allow us to provide a reasonable simulation of the experimental data (coverages of the adsorbed species and partial pressures of the gases of interest) recorded during a static PCO of IPA(sads) species.
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Affiliation(s)
- F Arsac
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-1, Bat. Raulin, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne-France
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Maggi S, Noale M, Gallina P, Marzari C, Bianchi D, Limongi F, Crepaldi G. Physical disability among older Italians with diabetes. The ILSA study. Diabetologia 2004; 47:1957-62. [PMID: 15599698 DOI: 10.1007/s00125-004-1555-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.2] [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: 04/27/2004] [Accepted: 07/08/2004] [Indexed: 10/26/2022]
Abstract
AIMS/HYPOTHESIS We studied the role of diabetic complications and comorbidity in the association between diabetes and disability in the elderly. METHODS Data were from a nationally representative sample of 5632 older Italians, aged 65 years and older, and who participated in the Italian Longitudinal Study on Aging. Clinical diagnoses of diabetes and other major chronic conditions were made by a physician, while disability was assessed by self-reported information on activities of daily living and physical performance tests. RESULTS After adjusting for age, education and BMI, disability on the basis of activities of daily living was associated with diabetes in women, but not in men (odds ratio [OR] 1.65, CI: 1.22-2.23 and OR 1.21, CI: 0.84-1.75 respectively). In contrast, the association between severe and/or total disability on the basis of physical performance tests and diabetes was strong in both sexes (OR 2.81, CI: 1.44-5.41 and OR 2.16, CI: 1.25-3.73 respectively). Adjusting for traditional complications and comorbidity reduced the excess odds of disability by 38% in women and by 16% in men. CONCLUSIONS/INTERPRETATION Disability in older Italians with diabetes is frequent and only partially attributable to traditional diabetic complications and comorbidity.
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Affiliation(s)
- S Maggi
- CNR Institute of Neuroscience, Center on Aging, c/o Clinica Medica 1(o), University of Padua, Via Giustiniani 2, 35128 Padova, Italy.
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Derrouiche S, Gravejat P, Bianchi D. Heats of Adsorption of Linear CO Species Adsorbed on the Au° and Ti+δ Sites of a 1% Au/TiO2 Catalyst Using in Situ FTIR Spectroscopy under Adsorption Equilibrium. J Am Chem Soc 2004; 126:13010-5. [PMID: 15469299 DOI: 10.1021/ja0470719] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The heats of adsorption of two linear CO species adsorbed on the Au degrees particles (denoted L(Au degrees)) and on the Ti(+delta) sites (denoted L(Ti+delta)) of a 1% Au/TiO(2) catalyst are determined as the function of their respective coverage by using the AEIR procedure (adsorption equilibrium infrared spectroscopy) previously developed. Mainly, the evolutions of the IR band area of each adsorbed species (2184 cm(-1) for L(Ti+delta) and at 2110 cm(-1) for L(Au degrees)) as a function of the adsorption temperature T(a), at a constant CO adsorption pressure P(CO), provide the evolutions of the coverages theta(LTi+delta) and theta(LAu degrees ) of each adsorbed CO species with T(a) in isobar conditions that give the individual heats of adsorption. It is shown that they linearly vary from 74 to 47 kJ/mol for L(Au degrees ) and from 50 to 40 kJ/mol for L(Ti+delta) at coverages 0 and 1, respectively. These values are consistent with literature data on model Au particles and TiO(2). In particular, it is shown that the mathematical formalism supporting the AEIR procedure can be applied to literature data on Au-containing solids (single crystals and model particles).
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Affiliation(s)
- Salim Derrouiche
- Contribution from the Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-I, Batiment 303, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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Derrouiche S, Bianchi D. Heats of adsorption using temperature programmed adsorption equilibrium: application to the adsorption of CO on Cu/A12O3 and H2 on Pt/Al2O3. Langmuir 2004; 20:4489-97. [PMID: 15969156 DOI: 10.1021/la0304013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A new simple analytical procedure is described that allows the determination of the heats of adsorption (denoted E(theta)) of adsorbed species at several coverages (theta's) using a single experiment. This procedure is an extension of an original method previously developed (denoted AEIR: adsorption equilibrium infrared spectroscopy). A mass spectrometer is used to determine the amounts of gas (in the present study, CO and H2) either desorbed from or adsorbed on a metal supported catalyst (4.7% Cu/Al2O3 and 2.9% Pt/Al2O3) during the perturbation of the adsorption equilibrium due to a controlled change of the adsorption temperature (Ta) at a quasi-constant adsorption pressure (Pa). These amounts allow us to follow the evolution of the adsorption equilibrium coverage (theta(e)) with Ta at the quasi-constant partial pressure (Pa). Then, the curve theta(e) = f(Ta) provides Etheta = f(theta) with the support of an adsorption model. This procedure presents several advantages as compared to the TPD methods, in particular, considering the theoretical supports linked to the exploitation of the experimental data. As compared to AEIR, the TPAE procedure allows one to study the heats of adsorption of adsorbed species that are not detectable by IR. However, it is not adapted if surface reactions occur in parallel to adsorption/desorption processes.
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Affiliation(s)
- Salim Derrouiche
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-I, Bat. 305, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
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Derrouiche S, Perrichon V, Bianchi D. Impact of the Residual Chlorine on the Heat of Adsorption of the Linear CO Species on Cu/Al2O3 Catalysts. J Phys Chem B 2003. [DOI: 10.1021/jp030262y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Salim Derrouiche
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-1, Bat. 305, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Vincent Perrichon
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-1, Bat. 305, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Daniel Bianchi
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-1, Bat. 305, 43 Bd du 11 Novembre 1918, 69622 Villeurbanne, France
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Battistel E, Bianchi D. Thermostability of Ribonuclease A in Organic Solvents: a Calorimetric and Spectroscopic Study. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100071a030] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bourane A, Nawdali M, Bianchi D. Heats of Adsorption of the Linear CO Species Adsorbed on a Ir/Al2O3 Catalyst Using in Situ FTIR Spectroscopy under Adsorption Equilibrium. J Phys Chem B 2002. [DOI: 10.1021/jp0137322] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Abdennour Bourane
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-I, Bat. 303, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Mostafa Nawdali
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-I, Bat. 303, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
| | - Daniel Bianchi
- Laboratoire d'Application de la Chimie à l'Environnement (LACE), UMR 5634, Université Claude Bernard, Lyon-I, Bat. 303, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne, France
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