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Falagario UG, Lantz A, Jambor I, Busetto GM, Bettocchi C, Finati M, Ricapito A, Luzzago S, Ferro M, Musi G, Totaro A, Racioppi M, Carbonara U, Checcucci E, Manfredi M, D'Aietti D, Porcaro AB, Nordström T, Björnebo L, Oderda M, Soria F, Taimen P, Aronen HJ, Perez IM, Ettala O, Marchioni M, Simone G, Ferriero M, Brassetti A, Napolitano L, Carmignani L, Signorini C, Conti A, Ludovico G, Scarcia M, Trombetta C, Claps F, Traunero F, Montanari E, Boeri L, Maggi M, Del Giudice F, Bove P, Forte V, Ficarra V, Rossanese M, Mucciardi G, Pagliarulo V, Tafuri A, Mirone V, Schips L, Antonelli A, Gontero P, Cormio L, Sciarra A, Porpiglia F, Bassi P, Ditonno P, Boström PJ, Messina E, Panebianco V, De Cobelli O, Carrieri G. Diagnosis of prostate cancer with magnetic resonance imaging in men treated with 5-alpha-reductase inhibitors. World J Urol 2023; 41:2967-2974. [PMID: 37787941 PMCID: PMC10632288 DOI: 10.1007/s00345-023-04634-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/14/2023] [Indexed: 10/04/2023] Open
Abstract
PURPOSE The primary aim of this study was to evaluate if exposure to 5-alpha-reductase inhibitors (5-ARIs) modifies the effect of MRI for the diagnosis of clinically significant Prostate Cancer (csPCa) (ISUP Gleason grade ≥ 2). METHODS This study is a multicenter cohort study including patients undergoing prostate biopsy and MRI at 24 institutions between 2013 and 2022. Multivariable analysis predicting csPCa with an interaction term between 5-ARIs and PIRADS score was performed. Sensitivity, specificity, and negative (NPV) and positive (PPV) predictive values of MRI were compared in treated and untreated patients. RESULTS 705 patients (9%) were treated with 5-ARIs [median age 69 years, Interquartile range (IQR): 65, 73; median PSA 6.3 ng/ml, IQR 4.0, 9.0; median prostate volume 53 ml, IQR 40, 72] and 6913 were 5-ARIs naïve (age 66 years, IQR 60, 71; PSA 6.5 ng/ml, IQR 4.8, 9.0; prostate volume 50 ml, IQR 37, 65). MRI showed PIRADS 1-2, 3, 4, and 5 lesions in 141 (20%), 158 (22%), 258 (37%), and 148 (21%) patients treated with 5-ARIs, and 878 (13%), 1764 (25%), 2948 (43%), and 1323 (19%) of untreated patients (p < 0.0001). No difference was found in csPCa detection rates, but diagnosis of high-grade PCa (ISUP GG ≥ 3) was higher in treated patients (23% vs 19%, p = 0.013). We did not find any evidence of interaction between PIRADS score and 5-ARIs exposure in predicting csPCa. Sensitivity, specificity, PPV, and NPV of PIRADS ≥ 3 were 94%, 29%, 46%, and 88% in treated patients and 96%, 18%, 43%, and 88% in untreated patients, respectively. CONCLUSIONS Exposure to 5-ARIs does not affect the association of PIRADS score with csPCa. Higher rates of high-grade PCa were detected in treated patients, but most were clearly visible on MRI as PIRADS 4 and 5 lesions. TRIAL REGISTRATION The present study was registered at ClinicalTrials.gov number: NCT05078359.
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Affiliation(s)
- Ugo G Falagario
- Unit of Urology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy.
| | - Anna Lantz
- Unit of Urology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Ivan Jambor
- Department of Radiology, University of Turku, Turku, Finland
- Medical Imaging Centre of Southwest Finland, Turku University Hospital, Turku, Finland
| | - Gian Maria Busetto
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy
| | - Carlo Bettocchi
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy
| | - Marco Finati
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy
| | - Anna Ricapito
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy
| | - Stefano Luzzago
- Department of Urology, IEO European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, Università Degli Studi Di Milano, Milan, Italy
| | - Matteo Ferro
- Department of Urology, IEO European Institute of Oncology, IRCCS, Milan, Italy
| | - Gennaro Musi
- Department of Urology, IEO European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, Università Degli Studi Di Milano, Milan, Italy
| | - Angelo Totaro
- Department of Urology, Catholic University Medical School "A. Gemelli" Hospital, Rome, Italy
| | - Marco Racioppi
- Department of Urology, Catholic University Medical School "A. Gemelli" Hospital, Rome, Italy
| | - Umberto Carbonara
- Department of Urology, Andrology and Kidney Transplantation, University of Bari, Bari, Italy
| | - Enrico Checcucci
- Department of Urology, Azienda Ospedaliera Universitaria "San Luigi Gonzaga", University of Turin, Turin, Italy
| | - Matteo Manfredi
- Department of Urology, Azienda Ospedaliera Universitaria "San Luigi Gonzaga", University of Turin, Turin, Italy
| | - Damiano D'Aietti
- UOC Urologia, Azienda Ospedaliera Universitaria Integrata Di Verona, Verona, Italy
| | | | - Tobias Nordström
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Lars Björnebo
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Marco Oderda
- Department of Surgical Sciences, Città Della Salute E Della Scienza Di Torino, Molinette Hospital, Turin, Italy
| | - Francesco Soria
- Department of Surgical Sciences, Città Della Salute E Della Scienza Di Torino, Molinette Hospital, Turin, Italy
| | - Pekka Taimen
- Institute of Biomedicine, University of Turku, Turku, Finland
- Department of Pathology, Turku University Hospital, Turku, Finland
| | - Hannu J Aronen
- Department of Radiology, University of Turku, Turku, Finland
- Medical Imaging Centre of Southwest Finland, Turku University Hospital, Turku, Finland
| | - Ileana Montoya Perez
- Department of Radiology, University of Turku, Turku, Finland
- Medical Imaging Centre of Southwest Finland, Turku University Hospital, Turku, Finland
| | - Otto Ettala
- Department of Urology, University of Turku, Turku, Finland
- Turku University Hospital, Turku, Finland
| | - Michele Marchioni
- Department of Urology, Università "G.d'Annunzio", Chieti-Pescara, Italy
| | - Giuseppe Simone
- Department of Oncologic Urology, IRCCS "Regina Elena" National Cancer Institute of Rome, Rome, Italy
| | - Mariaconsiglia Ferriero
- Department of Oncologic Urology, IRCCS "Regina Elena" National Cancer Institute of Rome, Rome, Italy
| | - Aldo Brassetti
- Department of Oncologic Urology, IRCCS "Regina Elena" National Cancer Institute of Rome, Rome, Italy
| | - Luigi Napolitano
- Department of Urology, University of Naples Federico II, Naples, Italy
| | | | | | | | - Giuseppe Ludovico
- Department of Urology, Ente Ecclesiastico Miulli, Acquaviva Delle Fonti, Italy
| | - Marcello Scarcia
- Department of Urology, Ente Ecclesiastico Miulli, Acquaviva Delle Fonti, Italy
| | | | | | | | - Emanuele Montanari
- Department of Urology, IRCCS Foundation Ca' Granda-Maggiore Policlinico Hospital, Milan, Italy
| | - Luca Boeri
- Department of Urology, IRCCS Foundation Ca' Granda-Maggiore Policlinico Hospital, Milan, Italy
| | - Martina Maggi
- Department of Maternal Infant and Urological Sciences, Sapienza Rome University, Rome, Italy
| | - Francesco Del Giudice
- Department of Maternal Infant and Urological Sciences, Sapienza Rome University, Rome, Italy
| | - Pierluigi Bove
- Department of Urology, San Carlo Di Nancy Hospital, Rome, Italy
| | - Valerio Forte
- Department of Urology, San Carlo Di Nancy Hospital, Rome, Italy
| | | | - Marta Rossanese
- Department of Urology, University of Messina, Messina, Italy
| | | | | | | | - Vincenzo Mirone
- Department of Urology, University of Naples Federico II, Naples, Italy
| | - Luigi Schips
- Department of Urology, Università "G.d'Annunzio", Chieti-Pescara, Italy
| | - Alessandro Antonelli
- UOC Urologia, Azienda Ospedaliera Universitaria Integrata Di Verona, Verona, Italy
| | - Paolo Gontero
- Department of Surgical Sciences, Città Della Salute E Della Scienza Di Torino, Molinette Hospital, Turin, Italy
| | - Luigi Cormio
- Unit of Urology, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
- Department of Urology, Ospedale L. Bonomo, Andria, Italy
| | - Alessandro Sciarra
- Department of Maternal Infant and Urological Sciences, Sapienza Rome University, Rome, Italy
| | - Francesco Porpiglia
- Department of Urology, Azienda Ospedaliera Universitaria "San Luigi Gonzaga", University of Turin, Turin, Italy
| | - PierFrancesco Bassi
- Department of Urology, Catholic University Medical School "A. Gemelli" Hospital, Rome, Italy
| | - Pasquale Ditonno
- Department of Urology, Andrology and Kidney Transplantation, University of Bari, Bari, Italy
| | - Peter J Boström
- Department of Urology, University of Turku, Turku, Finland
- Turku University Hospital, Turku, Finland
| | - Emanuele Messina
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University/Policlinico Umberto I, Rome, Italy
| | - Valeria Panebianco
- Department of Radiological Sciences, Oncology and Pathology, Sapienza University/Policlinico Umberto I, Rome, Italy
| | - Ottavio De Cobelli
- Department of Urology, IEO European Institute of Oncology, IRCCS, Milan, Italy
- Department of Oncology and Hemato-Oncology, Università Degli Studi Di Milano, Milan, Italy
| | - Giuseppe Carrieri
- Department of Urology and Organ Transplantation, University of Foggia, Foggia, Italy
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Signorini C, Carmignani L. Re: Marie-Aimée Perrouine-Verbe, Marcus J. Drake, Laura Thomas. The Challenges of Real-life Bladder Diary Use and Interpretation. Eur Urol Focus 2022;8:11-7. Eur Urol Focus 2022; 8:1871. [PMID: 35562251 DOI: 10.1016/j.euf.2022.04.018] [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] [Received: 03/14/2022] [Revised: 04/10/2022] [Accepted: 04/25/2022] [Indexed: 01/25/2023]
Affiliation(s)
| | - Luca Carmignani
- Urology Department, IRCCS Policlinico San Donato, Milan, Italy
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Claps F, Pavan N, d’Altilia N, Maggi M, Checcucci E, Napolitano L, Morlacco A, Tafuri A, Palumbo C, Mazzon G, Del Giudice F, Campi R, Signorini C, Boeri L, Giannarini G, Esperto F, Tulone G, Finati M, Sica M, La Rocca R, Bignù C, Celentano G, Falagario U, Traunero F, Panunzio A, Zucchi A, Sciarra A, Liguori G, Busetto G, Bartoletti R, Simonato A, Minervini A, Papalia R, Scarpa R, Serni S, Montanari E, Carmignani L, Celia A, Volpe A, Antonelli A, Dal Moro F, Mirone V, Porpiglia F, Tubaro A, Cormio L, Carrieri G, Trombetta C. Predictors of residual tumor at re-staging transurethral resection for high-risk non-muscle invasive bladder cancer: insights from a large multi-institutional collaboration. EUR UROL SUPPL 2022. [DOI: 10.1016/s2666-1683(22)01227-7] [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: 11/05/2022] Open
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Mazzaccaro D, Signorini C, Carmignani L, Giannetta M, Vaccaro C, Fancoli F, Guzzo S, Righini P, Vizziello D, Nano G. Antegrade versus retrograde common iliac artery revascularization and occurrence of erectile dysfunction. Ann Ital Chir 2022; 92:93-101. [PMID: 35342102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
AIM To assess the effect of antegrade and retrograde common iliac artery (CIA) revascularization on erectile dysfunction (ED) using the validated International Index of Erectile Function (IIEF) questionnaire, on patients treated for chronic occlusions of the CIA. MATERIALS AND METHODS Clinical data of patients who were submitted either to endovascular CIA revascularization (group A) or to femoral-femoral crossover bypass (group B) due a unilateral total occlusion of the CIA between 01/2015 and 12/2019 were retrospectively analyzed. Primary outcomes included the evaluation of ED using the IIEF questionnaire, before and 30 days after the operation. A P value <0.05 was considered statistically significant. RESULTS A total of 33 patients underwent endovascular (14 patients, group A) or surgical treatment (19, group B) Before the operation, no differences were recorded in the occurrence of ED between the two groups, neither in the results of the IIEF questionnaire. After the intervention, patients of group A performed significantly better than those of group B in terms of IIEF questionnaire (18 ± 10.1 versus 12.1 ± 14.8, P=0.01). Age and COPD were negatively correlated with the preoperative results of the IIEF questionnaire (OR 0.049, 95%CI 0.02-0.05, P<0.001 and OR 0.29, 95%CI 0.01-0.56, P=0.03, respectively) and the postoperative results of the IIEF questionnaire (OR 0.02, 95% CI 0.01-0.04, P<0.001, and OR 0.46, 95% CI 0.17-0.75, P=0.001, respectively). CONCLUSIONS Patients who were submitted to endovascular antegrade revascularization for occlusion of the CIA performed significantly better in terms of IIEF questionnaire than those who underwent surgical femoral-femoral crossover bypass and therefore retrograde HA revascularization. KEY WORDS Common iliac artery occlusion, Erectile dysfunction, Femoro-femoral bypass, Iliac artery angioplasty, IIEF-5.
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Guzzo S, Nazzani S, Vaccaro C, Di Benedetto R, Signorini C, Vizziello D, Conti A, Finkelberg E, Bortolussi G, Acquati P, De Vincetiis C, Carmignani L. Radical nephrectomy and caval thrombectomy with heart beating technique for renal cell cancer with tumor thrombus extension into inferior vena cava and right atrium: A less invasive multidisciplinary approach. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)01005-8] [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: 10/20/2022]
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Signorini C, Mazzaccaro D, Malacrida G, Vaccaro C, Guzzo S, Blezien O, Molinari F, Vizziello D, Conti A, Nano G, Carmignani L. Antegrade versus retrograde common iliac artery revascularization and occurrence of erectile disfunction. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)35338-6] [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: 11/26/2022] Open
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Nobili A, Radi E, Signorini C. A new Rayleigh-like wave in guided propagation of antiplane waves in couple stress materials. Proc Math Phys Eng Sci 2020; 476:20190822. [PMID: 32269492 DOI: 10.1098/rspa.2019.0822] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 11/26/2019] [Accepted: 01/28/2020] [Indexed: 11/12/2022] Open
Abstract
Motivated by the unexpected appearance of shear horizontal Rayleigh surface waves, we investigate the mechanics of antiplane wave reflection and propagation in couple stress (CS) elastic materials. Surface waves arise by mode conversion at a free surface, whereby bulk travelling waves trigger inhomogeneous modes. Indeed, Rayleigh waves are perturbations of the travelling mode and stem from its reflection at grazing incidence. As is well known, they correspond to the real zeros of the Rayleigh function. Interestingly, we show that the same generating mechanism sustains a new inhomogeneous wave, corresponding to a purely imaginary zero of the Rayleigh function. This wave emerges from 'reflection' of a bulk standing mode: This produces a new type of Rayleigh-like wave that travels away from, as opposed to along, the free surface, with a speed lower than that of bulk shear waves. Besides, a third complex zero of the Rayleigh function may exist, which represents waves attenuating/exploding both along and away from the surface. Since none of these zeros correspond to leaky waves, a new classification of the Rayleigh zeros is proposed. Furthermore, we extend to CS elasticity Mindlin's boundary conditions, by which partial waves are identified, whose interference lends Rayleigh-Lamb guided waves. Finally, asymptotic analysis in the thin-plate limit provides equivalent one-dimensional models.
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Affiliation(s)
- A Nobili
- Department of Engineering Enzo Ferrari, University of Modena and Reggio Emilia, via Vivarelli 10, 41125 Modena, Italy.,Centre En&Tech, p.le Europa 1, 42124 Reggio Emilia, Italy
| | - E Radi
- Department of Sciences and Methods of Engineering, University of Modena and Reggio Emilia, via Amendola 2, 42122 Reggio Emilia, Italy.,Centre En&Tech, p.le Europa 1, 42124 Reggio Emilia, Italy
| | - C Signorini
- Centre En&Tech, p.le Europa 1, 42124 Reggio Emilia, Italy
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Carmignani L, Clementi MC, Signorini C, Motta G, Nazzani S, Palmisano F, De Lorenzis E, Catellani M, Mistretta AF, Conti A, Tringali V, Costa MB, Vizziello D. Safety and feasibility of thullium laser transurethral resection of prostate for the treatment of benign prostatic enlargement in overweight patients. Asian J Urol 2018; 6:270-274. [PMID: 31297319 PMCID: PMC6595076 DOI: 10.1016/j.ajur.2018.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 04/27/2017] [Accepted: 07/18/2017] [Indexed: 02/02/2023] Open
Abstract
Objective We aimed to determine safety and feasibility of thulium laser transurethral vapoenucleation of prostate (ThuVEP) for treatment of obese patients affected by benign prostatic hyperplasia (BPH). Methods We retrospectively analysed data of 452 patients with BPH who underwent ThuVEP from February 2012 to March 2016 in a single center. Patients were divided into three groups according to body mass index (BMI, kg/m2): Normal weight (18.5 ≤ BMI < 25; Group A), overweight (25 ≤ BMI < 30; Group B) and obese (BMI ≥ 30; Group C), for a total of 412 patients evaluable for this study. Preoperative total serum prostate-specific antigen (PSA), digital rectal examination of the prostate, transrectal ultrasound (TRUS), renal ultrasound, urine culture, uroflowmetry, International Prostate Symptoms Score (IPSS), and Quality of Life (QoL) score were analyzed. Post-operative complications, hospital stay and days of catheterization, questionnaires and uroflowmetry at 1 and 3 months after surgery were evaluated. Preoperative data, surgical outcomes, complication rate and clinical outcomes were compared between groups. Results The median age of patients was 69 years (Interquartile Range [IQR 10]). The preoperative median IPSS among groups was 19 (IQR 8.75), 20 (IQR 10), and 18 (IQR 10) respectively. At 1 and 3 months of follow-up, this value was 8 (IQR 7), 8 (IQR 4), 7 (IQR 5) and 5 (IQR 6.25), 5 (IQR 6), 6 (IQR 5), respectively (all p between groups > 0.05). There was no statistically significant difference among three groups as for hospital stay and days of catheterization (p > 0.05). Conclusion Our results showed that ThuVEP was safe and feasible even in overweight patients with substantially enlarged prostate.
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Affiliation(s)
- Luca Carmignani
- Policlinico San Donato, Urology, San Donato, Milanese, Italy
| | | | | | - Gloria Motta
- Policlinico San Donato, Urology, San Donato, Milanese, Italy
| | | | | | | | | | | | - Andrea Conti
- Istituto Europeo di Oncologia, Urology, Milan, Italy
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Strano E, Mazzocco M, Boiano A, Boiano C, La Commara M, Manea C, Parascandolo C, Pierroutsakou D, Signorini C, Torresi D, Yamaguchi H, Kahl D, Acosta L, Di Meo P, Fernandez-Garcia J, Glodariu T, Grebosz J, Guglielmetti A, Imai N, Hirayama Y, Ishiyama H, Iwasa N, Jeong S, Jia H, Keeley N, Kim Y, Kimura S, Kubono S, Lay J, Lin C, Marquinez-Duran G, Marte I, Miyatake H, Mukai M, Nakao T, Nicoletto M, Pakou A, Rusek K, Sakaguchi Y, Sanchez-Benitez A, Sava T, Sgouros O, Stefanini C, Soramel F, Soukeras V, Stiliaris E, Stroe L, Teranishi T, Toniolo N, Wakabayashi Y, Watanabe Y, Yang L, Yang Y. 7Be and 8B reaction dynamics at Coulomb barrier energies. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818402015] [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: 11/15/2022] Open
Abstract
We investigated the reaction dynamics induced by the 7Be,8B+208Pb collisions at energies around the Coulomb barrier. Charged particles originated by both the col- lisions were detected by means of 6 ΔE-Eres telescopes of a newly developed detector array. Experimental data were analysed within the framework of the Optical Model and the total reaction cross-sections were compared together and with the 6,7Li+208Pb colli-sion data. According to the preliminary results, 7Be nucleus reactivity is rather similar to the 7Li one whereas the 8B+208Pb total reaction cross section appears to be much larger than those measured for reactions induced by the other weakly-bound projectiles on the same target.
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Carmignani L, Signorini C. Re: Freire et al.: Deep Infiltrating Endometriosis-Urinary Tract Involvement and Predictive Factors for Major Surgery (Urology 2017;108:65-70). Urology 2017; 112:226. [PMID: 29155189 DOI: 10.1016/j.urology.2017.10.042] [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] [Received: 10/20/2017] [Revised: 10/20/2017] [Accepted: 10/21/2017] [Indexed: 11/16/2022]
Affiliation(s)
- Luca Carmignani
- IRCCS Policlinico San Donato, Department of Urology, University of Milan, Milan, Italy
| | - Claudia Signorini
- IRCCS Policlinico San Donato, Department of Urology, University of Milan, Milan, Italy
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Commara ML, Mazzocco M, Boiano A, Boiano C, Manea C, Parascandolo C, Pierroutsakou D, Signorini C, Strano E, Torresi D, Yamaguchi H, Kahl D, Meo PD, Grebosz J, Imai N, Hirayama Y, Ishiyama H, Iwasa N, Jeong S, Jia H, Kim Y, Kimura S, Kubono S, Lin C, Miyatake H, Mukai M, Nakao T, Nicoletto M, Sakaguchi Y, Sánchez-Benítez A, Soramel F, Teranishi T, Wakabayashi Y, Watanabe Y, Yang L, Yang Y. 8B + 208Pb Elastic Scattering at Coulomb Barrier Energies. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716300032] [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: 11/14/2022] Open
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Parascandolo C, Boiano A, Boiano C, La Commara M, La Rana G, Mazzocco M, Pierroutsakou D, Signorini C, Soramel F, Strano E. The RIB in-flight facility EXOTIC at INFN-LNL. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716501041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Parascandolo C, Pierroutsakou D, Alba R, Del Zoppo A, Maiolino C, Santonocito D, Agodi C, Baran V, Boiano A, Colonna M, Coniglione R, De Filippo E, Di Toro M, Emanuele U, Farinon F, Guglielmetti A, La Commara M, Martin B, Mazzocchi C, Mazzocco M, Rizzo C, Romoli M, Signorini C, Silvestri R, Soramel F, Strano E, Torresi D, Trifirò A, Trimarchi M. Dynamical Dipole mode in heavy-ion fusion reactions. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716300043] [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: 11/15/2022] Open
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Mazzocco M, Boiano A, Boiano C, Commara ML, Manea C, Parascandolo C, Pierroutsakou D, Strano E, Torresi D, Acosta L, Meo PD, Fernandez-Garcia J, Glodariu T, Grebosz J, Guglielmetti A, Marquinez-Duran G, Martel I, Nicoletto M, Pakou A, Sánchez-Benítez A, Sava T, Sgouros O, Signorini C, Soramel F, Soukeras V, Stroe L. Reaction dynamics studies for the system 7Be + 208Pb at Coulomb barrier energies. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716300035] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Mazzocco M, Boiano A, Boiano C, La Commara M, Manea C, Parascandolo C, Pierroutsakou D, Signorini C, Strano E, Torresi D, Yamaguchi H, Kahl D, Acosta L, Di Meo P, Fernandez-Garcia J, Glodariu T, Grebosz J, Guglielmetti A, Imai N, Hirayama Y, Ishiyama H, Iwasa N, Jeong S, Jia H, Keeley N, Kim Y, Kimura S, Kubono S, Lay J, Lin C, Marquinez-Duran G, Martel I, Miyatake H, Mukai M, Nakao T, Nicoletto M, Pakou A, Rusek K, Sakaguchi Y, Sánchez-Benítez A, Sava T, Sgouros O, Stefanini C, Soramel F, Soukeras V, Stiliaris E, Stroe L, Teranishi T, Toniolo N, Wakabayashi Y, Watanabe Y, Yang L, Yang Y. 7Be- and8B-reaction dynamics at Coulomb barrier energies. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611706006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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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16
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Torresi D, Strano E, Mazzocco M, Boiano A, Boiano C, Di Meo P, La Commara M, Manea C, Nicoletto M, Grebosz J, Guglielmetti A, Molini P, Parascandolo C, Pierroutsakou D, Signorini C, Soramel F, Toniolo N, Filipescu D, Gheorghe A, Glodariu T, Jeong S, Kim Y, Lay J, Miyatake H, Pakou A, Sgouros O, Soukeras V, Stroe L, Vitturi A, Watanabe Y, Zerva K. Elastic scattering of17O+208Pb at energies near the Coulomb barrier. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611708027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Carmignani L, Vizziello D, Ratti D, Marenghi C, Signorini C, Finkelberg E, Picozzi S, Stubinski R, Casellato S. MP42-17 TES (THULLIUM EJACULATION SPARING): IMPACT OF THUVEP/THUVAP ON SEXUAL OUTCOMES. J Urol 2016. [DOI: 10.1016/j.juro.2016.02.205] [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] [Indexed: 10/22/2022]
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Parascandolo C, Pierroutsakou D, Alba R, Del Zoppo A, Maiolino C, Santonocito D, Agodi C, Baran V, Boiano A, Colonna M, Coniglione R, De Filippo E, Di Toro M, Emanuele U, Farinon F, Guglielmetti A, La Commara M, Martin B, Mazzocchi C, Mazzocco M, Rizzo C, Romoli M, Signorini C, Silvestri R, Soramel F, Strano E, Torresi D, Trifirò A, Trimarchi M. Dynamical Dipole mode in the 40,48Ca + 152,144Sm fusion reactions at 11 MeV/nucleon. EPJ Web of Conferences 2016. [DOI: 10.1051/epjconf/201611708016] [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: 11/14/2022] Open
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19
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Goffinet L, Izard C, Ferrera-Tourenc V, Etienne JM, Pouget E, Audoyer C, Bauger M, Ben Mohamed S, Chaffin A, Dumats S, Fantino M, Kroepfle C, Livache L, Palerm W, Pistidda M, Signorini C, Stevenot E. Cas d’une contamination inter-échantillons sur automate Ortho© AutoVue Innova. Transfus Clin Biol 2015. [DOI: 10.1016/j.tracli.2015.06.124] [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: 10/22/2022]
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20
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Stagi S, Cavalli L, Bertini F, Signorini C, Matucci Cerinic M, de Martino M, Brandi ML, Falcini F. Comparison of bone mass and quality determinants in adolescents and young adults with juvenile systemic lupus erythematosus (JSLE) and juvenile idiopathic arthritis (JIA). Lupus 2014; 23:1392-406. [PMID: 25074873 DOI: 10.1177/0961203314543916] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 12/20/2022]
Abstract
BACKGROUND Few prospective data have been published on the comparison of bone density and quality in homogeneous groups of patients with juvenile systemic lupus erythematosus (JSLE) and juvenile idiopathic arthritis (JIA). OBJECTIVE AND HYPOTHESIS The objective of this study is to perform a longitudinal evaluation of the prevalence and the characteristics of bone mass and quality and to evaluate the differences on the bone parameters, using DXA, pQCT and QUS. POPULATION AND/OR METHODS Forty-three JSLE patients (35 females, 8 males, median age 18.8, range 14.0-34.1 years) have been studied with DXA, pQCT and QUS scans and compared with 138 JIA patients (112 females, 26 males, median age 18.9, range 13.4-33.2 years), and 79 controls (59 females, 20 males; median age 19.3, range 13.5-36.5 years). Of these, 39 patients (32 females and 7 males, median age 20.3, range 16.6-36.8 years) with JSLE were followed longitudinally and compared with 131 patients (108 females, 23 males median age 20.7, range 15.8-37.1 years) with JIA and 63 controls (48 females, 15 males; median age 21.9, range 15.5-38.3 years). RESULTS JSLE patients have a higher bone cortical density (CrtBMD) than controls and JIA patients (p < 0.005). However, JSLE and JIA patients have a significantly reduced bone trabecular density (TrbBMD) compared to controls (p < 0.0001), with no differences between JSLE and JIA. In addition, JIA patients show a significantly reduced muscle area (MuscleCSA) compared to JSLE and controls (p < 0.001). Conversely, fat area (FatCSA) is significantly increased both in JIA and JSLE patients when compared to controls (p < 0.001), with no differences between the JSLE and JIA groups. Analogous results are observed in the polar resistance to stress (SSIp). On longitudinal evaluation, contrary to CrtBMD, the difference between BMAD SDS, TrbBMD, MuscleCSA and FatCSA remains unchanged; in JSLE patients, SSIp is stable in comparison to JIA and controls without any difference between the two groups. CONCLUSIONS The evaluation of bone density and structure parameters in JSLE patients highlights significant differences compared with JIA patients and controls. These data might indicate a different pathogenesis of bone damage in the two entities, and suggest a different diagnostic and therapeutic approach to improve the peak bone mass.
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Affiliation(s)
- S Stagi
- Health Sciences Department, University of Florence, Anna Meyer Children's University Hospital, Florence, Italy
| | - L Cavalli
- Department of Internal Medicine, Endocrinology Unit, University of Florence, Florence, Italy
| | - F Bertini
- Department of BioMedicine, Section of Rheumatology, Transition Clinic, University of Florence, Florence, Italy
| | - C Signorini
- Department of Internal Medicine, Endocrinology Unit, University of Florence, Florence, Italy
| | - M Matucci Cerinic
- Department of BioMedicine, Section of Rheumatology, Transition Clinic, University of Florence, Florence, Italy
| | - M de Martino
- Health Sciences Department, University of Florence, Anna Meyer Children's University Hospital, Florence, Italy
| | - M L Brandi
- Department of Internal Medicine, Endocrinology Unit, University of Florence, Florence, Italy
| | - F Falcini
- Department of BioMedicine, Section of Rheumatology, Transition Clinic, University of Florence, Florence, Italy
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De Felice C, Signorini C, Leoncini S, Pecorelli A, Durand T, Valacchi G, Ciccoli L, Hayek J. [Oxidative stress and Rett syndrome]. Minerva Pediatr 2014; 66:41-62. [PMID: 24608581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The oxidative stress (OS) hypothesis is able to explain several features of Rett syndrome (RTT), a pervasive development disorder almost exclusively affecting females mainly caused by a mutation in the X-linked methyl-CpG binding protein 2 (MeCP2) gene. In particular, the generation of an OS imbalance is related to MeCP2 gene mutation type, as well as natural history, clinical heterogeneity of the disease, and is compatible with the potential reversibility of the disease observed in the RTT animal models. In addition, our findings indicate the importance of blood as a suitable biological fluid for detecting markers of central nervous system oxidative damage in RTT and underline the key role of interaction between organic chemists, OS biochemists, and clinicians in revealing potential new markers of the disease and identifying potential new targets and interventional strategies aimed at improving the quality of life of these patients, affected by a so far incurable disease. Further efforts in the near future are needed in order to dissect the "black box" of the molecular events likely linking the MeCP2 gene mutation to OS derangement and subsequent disease expression.
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Affiliation(s)
- C De Felice
- Unità Operativa Complessa di Terapia Intensiva Neonatale Policlinico Le Scotte Azienda Ospedaliera Universitaria Senese (AOUS), Siena, Italia -
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Lunardi S, Bizzeti P, Bucci C, Chiari M, Dainese A, Di Nezza P, Menegazzo R, Nannini A, Signorini C, Valiente-Dobon J. Preface. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146600001] [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: 11/14/2022] Open
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23
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Torresi D, Strano E, Mazzocco M, Boiano A, Boiano C, Di Meo P, Guglielmetti A, La Commara M, Manea C, Nicoletto M, Parascandolo C, Parascandolo L, Pierroutsakou D, Sandoli M, Signorini C, Soramel F, Toniolo N, Grebosz J, Filipescu D, Gheorghe A, Glodariu T, Stroe L, Miyatake H, Watanabe Y, Jeong S, Kim Y, Pakou A, Sgouros O, Soukeras V, Zerva K. Elastic scattering of 17O ions from 58Ni at near-barrier energies. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603087] [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: 11/14/2022] Open
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24
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Mazzocco M, Torresi D, Acosta L, Boiano A, Boiano C, Fierro N, Glodariu T, Guglielmetti A, Keeley N, La Commara M, Martel I, Mazzocchi C, Molini P, Pakou A, Parascandolo C, Parkar V, Patronis N, Pierroutsakou D, Romoli M, Rusek K, Sanchez-Benitez A, Sandoli M, Signorini C, Silvestri R, Soramel F, Stiliaris E, Strano E, Stroe L, Zerva K. Transfer vs. Breakup in the interaction of the 7Be Radioactive Ion Beam with a 58Ni target at Coulomb barrier energies. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603060] [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: 11/14/2022] Open
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25
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Parascandolo C, Pierroutsakou D, Agodi C, Alba R, Baran V, Boiano A, Colonna M, Coniglione R, De Filippo E, Del Zoppo A, Di Toro M, Emanuele U, Farinon F, Guglielmetti A, La Commara M, Maiolino C, Martin B, Mazzocco M, Mazzocchi C, Rizzo C, Romoli M, Santonocito D, Signorini C, Silvestri R, Soramel F, Strano E, Torresi D, Trifirò A, Trimarchi M. Investigation of the Dynamical Dipole mode in the 192Pb mass region. EPJ Web of Conferences 2014. [DOI: 10.1051/epjconf/20146603069] [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: 11/14/2022] Open
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26
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Chisci G, De Felice C, Parrini S, Signorini C, Leoncini S, Ciccoli L, Volpi N, Capuano A. The role of preoperative oxidative stress and mandibular third molar postoperative outcome. Int J Oral Maxillofac Surg 2013; 42:1499-500. [PMID: 23932577 DOI: 10.1016/j.ijom.2013.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/01/2013] [Indexed: 11/25/2022]
Affiliation(s)
- G Chisci
- Tuscan School of Dental Medicine, University of Siena, Siena, Italy.
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27
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Mazzocco M, Signorini C, Pierroutsakou D, Glodariu T, Boiano A, Boiano C, Castellani L, Corti D, De Rosa A, Di Meo P, Farinon F, Figuera P, Filipescu D, Fortunato L, Galet G, Grebosz J, Guglielmetti A, Inglima G, La Commara M, Lattuada M, Lotti P, Manea C, Mazzocchi C, Molini P, Musumarra A, Nicoletto M, Pakou A, Parascandolo C, Patronis N, Romoli M, Sandoli M, Scuderi V, Silvestri R, Soramel F, Stroe L, Toniolo N, Torresi D, Vardaci E, Vitturi A. Does the breakup process affect the reaction dynamics for the systems17O,17F +58Ni at Coulomb barrier energies? EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111713005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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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30
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Pierroutsakou D, Parascandolo C, Silvestri R, Agodi C, Alba R, Baran V, Boiano A, Colonna M, Coniglione R, De Filippo E, De Rosa A, Del Zoppo A, Di Toro M, Emanuele U, Farinon F, Guglielmetti A, Inglima G, La Commara M, Maiolino C, Martin B, Mazzocco M, Mazzocchi C, Molini P, Rizzo C, Romoli M, Sandoli M, Santonocito D, Signorini C, Soramel F, Trifirò A, Trimarchi M. Dynamical Dipole mode in heavy-ion fusion reactions by using stable and radioactive beams. EPJ Web of Conferences 2011. [DOI: 10.1051/epjconf/20111710006] [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: 11/15/2022] Open
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31
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Coccini T, Roda E, Signorini C, Goldoni M, Giardini A, Mutti A, Manzo L. Kinetics and oxidative stress evaluation of silica nanoparticles doped with cadmium after intratracheal instillation in rat. Toxicol Lett 2010. [DOI: 10.1016/j.toxlet.2010.03.1139] [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: 11/24/2022]
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32
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Aldinucci C, Carretta A, Maiorca SM, Leoncini S, Signorini C, Ciccoli L, Pessina GP. Effects of 50 Hz electromagnetic fields on rat cortical synaptosomes. Toxicol Ind Health 2009; 25:249-52. [PMID: 19651794 DOI: 10.1177/0748233709103031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [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: 11/15/2022]
Abstract
Nerve cells are very responsive to weak pulsed electromagnetic fields (EMFs). Such non-ionizing radiation, with frequencies of 0-300 Hz and 0.1-100 mT, can affect several cellular activities, with unusual dose-response characteristics. The present study examined the effect of a 2-h exposure of synaptosomes on a system generating a peak magnetic field of 2 mT. We evaluated the changes of the synaptosomal mitochondrial respiration rate and ATP production, membrane potential, intrasynaptosomal Ca2+ concentration, and the release of free iron and F2-isoprostanes. O2 consumption and ATP production remained unchanged in exposed synaptosomes. The intrasynaptosomal Ca2+ concentration decreased slowly and no depolarization of the synaptosomal membrane was detected. Finally, the release of free iron and F2-isoprostanes by synaptosomal suspensions also remained unchanged after EMF exposure. These results indicate that the physiological behavior of cortical synaptosomes was unaffected by weak pulsed EMFs.
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Affiliation(s)
- C Aldinucci
- Department of Physiology, University of Siena, 53100 Siena, Italy
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33
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34
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Perandin F, Pinsi G, Signorini C, Gelmi M, Ravizzola G, Manca N. IMPIEGO DI UN METODO DI BIOLOGIA MOLECOLARE PER IDENTIFICAZIONE DIRETTA DI Mycobacterium spp. Microbiol Med 2005. [DOI: 10.4081/mm.2005.3488] [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: 11/23/2022] Open
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35
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Signorini C, Glodariu T, Liu ZH, Mazzocco M, Ruan M, Soramel F. Breakup Processes in the Systems9Be+208Pb,209Bi and6Li+208Pb around the Coulomb Barrier. ACTA ACUST UNITED AC 2004. [DOI: 10.1143/ptps.154.272] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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36
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Pinsi G, Signorini C, Gelmi M, Manca N, Turano A. Identification of Mycobacterium xenopi by gas chromatography. New Microbiol 2001; 24:91-4. [PMID: 11209848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
For the purposes of the following study we cultured 32 strains of Mycobacterium xenopi isolated from clinical specimens and several strains of other slowly growing mycobacteria. The cultures were grown in liquid medium and then analysed--after saponification, methylation, extraction with organic solvent and washing of the organic phase--using a highly sensitive manual gas-liquid chromatographic assay for the determination of secondary alcohol 2-OH-docosanol. The percentage of this compound was compared with that previously measured in strains of Mycobacterium xenopi grown on solid medium. The presence of this specific alcohol was always apparent, even though its quantity was lower than that obtained by growing mycobacteria on solid medium. The absence of interference peaks around the compound was checked by analyzing strains of other slowly growing mycobacteria in the same conditions.
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Affiliation(s)
- G Pinsi
- Laboratorio di Virologia ed Indagini Microbiologiche, Azienda Ospedaliera Spedali Civili di Brescia, Italy
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37
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Ferrali M, Signorini C, Ciccoli L, Bambagioni S, Rossi V, Pompella A, Comporti M. Protection of erythrocytes against oxidative damage and autologous immunoglobulin G (IgG) binding by iron chelator fluor-benzoil-pyridoxal hydrazone. Biochem Pharmacol 2000; 59:1365-73. [PMID: 10751545 DOI: 10.1016/s0006-2952(00)00273-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [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: 12/01/2022]
Abstract
Iron is released in a free desferrioxamine-chelatable form when erythrocytes are challenged by an oxidative stress. The release of iron is believed to play an important role in inducing destructive damage (lipid peroxidation and hemolysis) or in producing membrane protein oxidation and generation of senescent cell antigens (SCA). In this report, we further tested the hypothesis that intracellular chelation of iron released under conditions of oxidative stress prevents erythrocyte damage or SCA formation. Fluor-benzoil-pyridoxal hydrazone (FBPH), an iron-chelating molecule of the family of aromatic hydrazones, was prepared by synthesis and used for the above purpose after the capacity of the product to enter cells had been ascertained. GSH-depleted mouse erythrocytes were incubated with the oxidant drug phenylhydrazine in order to produce iron release, lipid peroxidation, and hemolysis. FBPH at a concentration of 200 microM prevented lipid peroxidation and hemolysis in spite of equal values of iron release. FBPH was active even at a lower concentration (100 microM) when the erythrocytes were preincubated with it for 15 min. No preventive effect was seen when FBPH saturated with iron was used. Prolonged aerobic incubation (60 hr) of erythrocytes produced iron release and formation of SCA as determined by autologous immunoglobulin G (IgG) binding. The IgG binding was detected by using an anti-IgG antibody labeled with fluorescein and by examining the cells for fluorescence by confocal microscopy. FBPH prevented SCA formation in a dose-related manner. These results lend further support to the hypothesis that iron release is a key factor in erythrocyte ageing.
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Affiliation(s)
- M Ferrali
- Department of Pathophysiology and Experimental Medicine, University of Siena, 53100, Siena, Italy
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Ciccoli L, Ferrali M, Rossi V, Signorini C, Alessandrini C, Comporti M. Hemolytic drugs aniline and dapsone induce iron release in erythrocytes and increase the free iron pool in spleen and liver. Toxicol Lett 1999; 110:57-66. [PMID: 10593595 DOI: 10.1016/s0378-4274(99)00138-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.4] [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: 12/01/2022]
Abstract
Incubation of rat erythrocytes with the hydroxylated metabolites of aniline and dapsone (4-4'-diaminodiphenylsulfone), phenylhydroxylamine and dapsone hydroxylamine, respectively, induced marked release of iron and methemoglobin formation. On the contrary, no release of iron nor methemoglobin formation was seen when the erythrocytes were incubated with the parent compounds (aniline and dapsone). The acute intoxication of rats with aniline or dapsone induced a marked increase in the erythrocyte content of free iron and methemoglobin, indicating that the xenobiotics are effective only after biotransformation to toxic metabolites in vivo. Prolonged administration of aniline or dapsone to rats produced continuous release of iron from erythrocytes. Marked iron overload was seen in the spleen and in the liver Kupffer cells, as detected histochemically. The spleen weight in these subchronically treated animals was significantly increased. The free iron pool was markedly increased in the spleen and to a lower extent in the liver. The possible relationships between iron release in erythrocytes, oxidative damage seen in senescent cells, hemolysis, overwhelmed capacity of spleen and liver to keep iron in storage forms and subsequent increase in low molecular weight, catalitically active iron is discussed.
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Affiliation(s)
- L Ciccoli
- Istituto di Patologia Generale, Università di Siena, Italy
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Abstract
Our previous studies have shown that iron is released in a free (desferrioxamine-chelatable) form when erythrocytes undergo oxidative stress (incubation with oxidizing agents or aerobic incubation in buffer for 24-60 h (a model of rapid in vitro ageing)). The release is accompanied by oxidative alterations of membrane proteins as well as by the appearance of senescent antigen, a signal for termination of old erythrocytes. In hemolytic anemias by hereditary hemoglobin alterations an accelerated removal of erythrocytes occurs. An increased susceptibility to oxidative damage has been reported in beta-thalassemic erythrocytes. Therefore we have investigated whether an increased iron level and an increased susceptibility to iron release could be observed in the erythrocytes from patients with beta-thalassemia. Erythrocytes from subjects with thalassemia intermedia showed an extremely higher content (0 time value) of free iron and methemoglobin as compared to controls. An increase, although non-statistically-significant, was seen in erythrocytes from subjects with thalassemia major. Upon aerobic incubation for 24 h the release of iron in beta-thalassemic erythrocytes was by far greater than in controls, with the exception of thalassemia minor. When the individual values for free iron content (0 time) seen in thalassemia major and intermedia were plotted against the corresponding values for HbF, a positive correlation (P < 0.001) was observed. Also, a positive correlation (P < 0.01) was seen between the values for free iron release (24 h incubation) and the values for HbF. These results suggest that the presence of HbF is a condition favourable to iron release. Since in beta-thalassemia the persistance of HbF is related to the lack or deficiency of beta chains and therefore to the excess of alpha chains, the observed correlation between free iron and HbF, is consistent with the hypothesis by others that excess of alpha chains represents a prooxidant factor.
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Affiliation(s)
- L Ciccoli
- Istituto di Patologia Generale, Università di Siena, Italy
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Pinsi G, Signorini C, Gelmi M, Garrafa E, Albertini A, Turano A. Gas chromatographic assay of cellular fatty acids and alcohols for the identification of Mycobacterium species. New Microbiol 1999; 22:151-4. [PMID: 10322614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
Ten mycobacterial species obtained from 141 cultures isolated from clinical specimens were studied. The cultures were grown on solid medium and then analysed-after saponification, methylation, extraction with organic solvent and washing of the organic phase--by capillary gas-liquid chromatography for fatty acid and secondary alcohol composition. The absence of secondary alcohols was characteristic of M. genavense, M. tuberculosis and the following Mycobacterium species with specific branched-chain fatty acids allowing their direct identification: M. gordonae, M. kansasii and M. marinum. The presence of secondary alcohols was characteristic of M. avium, M. phlei, M. scrofulaceum, M. terrae and M. xenopi. In the case of M. xenopi direct identification was made possible by the presence of a specific alcohol.
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Affiliation(s)
- G Pinsi
- Laboratorio di Virologia ed Indagini Microbiologiche, Azienda Ospedaliera Spedali Civili di Brescia, Italy
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Martinelli F, Licenziati S, Garrafa E, Signorini C, Caruso A, Turano A. Development of horse polyclonal antiserum inhibiting all in vitro biological functions of human IFN-gamma. J BIOL REG HOMEOS AG 1998; 12:112-8. [PMID: 10022002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Following a standard immunization protocol with recombinant human interferon-gamma (IFN-gamma), a horse polyclonal antiserum was obtained and evaluated for its ability to interfere with multiple IFN-gamma activities in vitro. Data obtained show that polyclonal horse antiserum neutralizes the antiproliferative activity of IFN-gamma, inhibits the binding of IFN-gamma to cellular receptors, and can up-regulate HLA-DR antigen expression and interfere with its antiviral activity. The broad neutralizing capacity of horse polyclonal antiserum has been assessed on cell lines which differ as to origin and sensitivity to IFN-gamma. Moreover, we observed that this antiserum could inhibit the binding of radiolabeled IFN-gamma to its cellular receptor, its subsequent internalization into the target cell, and its antiviral activity. As it is able to inhibit all the biological activities of IFN-gamma, this antiserum might provide new therapeutic approaches to diseases with evidence of activated cell-mediated immunity.
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Affiliation(s)
- F Martinelli
- Institute of Microbiology, University of Brescia, Italy
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42
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Ravizzola G, Manca N, Dima F, Signorini C, Garrafa E, Turano A. Isolation of a Clostridium exotoxin producer other than Clostridium difficile from a patient with diarrhea. J Clin Microbiol 1998; 36:2396. [PMID: 9675699 PMCID: PMC105064 DOI: 10.1128/jcm.36.8.2396-2396.1998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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43
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Abstract
Heparinized blood samples were obtained at birth from 164 newborn infants (101 full term; 63 preterm). Intra-erythrocyte free iron concentration and hypoxanthine plasma levels were determined by high-pressure liquid chromatography. Intra-erythrocyte free iron concentration was higher in preterm than in full term babies (p < 0.0001) and adults (p < 0.0001). Statistically significant correlations were observed between intra-erythrocyte free iron concentration and hypoxanthine levels (r = 0.66; p = 0.0001), pH (r = -0.76; p = 0.0001), base excess (r = -0.79; p = 0.0001), and gestational age (r = -0.44; p = 0.0001) in both infant populations. Multiple regression analysis between intra-erythrocyte free iron concentration in cord blood, as an independent variable, and Apgar score at 1 min, pH, base excess, hypoxanthine values, FiO2 needed for resuscitation immediately after delivery, and gestational age, as dependent variables, identified hypoxanthine levels (p = 0.0003; partial F-test = 15.4) as the best single predictor of intra-erythrocyte free iron concentration. In conclusion, hypoxia induces intra-erythrocyte free iron release, and therefore enhances the risk of oxidative injury due to hydroxyl radical generation.
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Affiliation(s)
- G Buonocore
- Istituto di Pediatria Preventiva e Neonatologia, Università degli Studi di Siena, Italy
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44
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Ferrali M, Signorini C, Caciotti B, Sugherini L, Ciccoli L, Giachetti D, Comporti M. Protection against oxidative damage of erythrocyte membrane by the flavonoid quercetin and its relation to iron chelating activity. FEBS Lett 1997; 416:123-9. [PMID: 9369196 DOI: 10.1016/s0014-5793(97)01182-4] [Citation(s) in RCA: 223] [Impact Index Per Article: 8.3] [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: 02/05/2023]
Abstract
Incubation of glutathione (GSH) depleted mouse erythrocytes with the oxidants phenylhydrazine, acrolein, divicine and isouramil resulted in the release of free iron and in lipid peroxidation and hemolysis. The addition of the flavonoid quercetin, which chelates iron and penetrates erythrocytes, resulted in remarkable protection against lipid peroxidation and hemolysis. The protection seems to be due to intracellular chelation of iron, since a semi-stoichiometric ratio between released iron and the amount of quercetin necessary to prevent lipid peroxidation and hemolysis was found. Incubation of GSH depleted human erythrocytes with divicine and isouramil did not induce lipid peroxidation and hemolysis in spite of a substantial release of iron. However, divicine and isouramil produced alterations of membrane proteins, such as spectrin and band 3, as well as formation of senescent cell antigen. The addition of quercetin prevented these alterations.
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Affiliation(s)
- M Ferrali
- Institute of General Pathology, University of Siena, Italy
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45
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Ferrali M, Signorini C, Sugherini L, Pompella A, Lodovici M, Caciotti B, Ciccoli L, Comporti M. Release of free, redox-active iron in the liver and DNA oxidative damage following phenylhydrazine intoxication. Biochem Pharmacol 1997; 53:1743-51. [PMID: 9264328 DOI: 10.1016/s0006-2952(97)82456-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [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: 02/05/2023]
Abstract
Following the subchronic intoxication of rats with phenylhydrazine, resulting in marked anemia, reticulocytosis, methemoglobinemia and increased hemocatheresis, the hepatic content of total iron was increased, as was hepatic ferritin and its saturation by iron. A striking increase (approximately 7-fold) was also observed in free iron which appeared to be redox-active. The increase in liver free iron involved the hepatocellular component of the liver. Since DNA is one of the cellular targets of redox active iron, liver DNA from phenylhydrazine-treated rats was analyzed by electrophoresis and found to be markedly fragmented. Experiments with isolated hepatocytes in culture or in suspension challenged with phenylhydrazine or Fe-nitrilotriacetate strongly suggested that the DNA damage was due to reactive iron rather than to the hepatic metabolism of phenylhydrazine. The levels of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo), a specific marker of oxidative DNA damage, were significantly higher in phenylhydrazine-treated rats as compared to untreated controls. The prolongation of phenylhydrazine treatment over a period of 6 weeks resulted in a persistent damage to DNA and in phenotypic changes such as an increase in hepatocyte gamma-glutamyl transpeptidase (gamma-GT, EC 2.3.2.2) activity. Possible relationships between iron overload, iron release, DNA damage and tumor initiation are discussed.
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Affiliation(s)
- M Ferrali
- Istituto di Patologia Generale dell'Università di Siena, Italy
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46
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Abstract
The aerobic incubation of erythrocytes in phosphate buffer for 24-60 h (a model of rapid in vitro ageing) induced progressive iron release and methemoglobin formation. Membrane proteins showed electrophoretic alterations and increase in carbonyl groups (as documented by IR spectroscopy). None of these phenomena were seen when the erythrocytes were incubated under anaerobic conditions. The membranes from aerobically incubated cells bound a much higher amount of autologous IgG than those from anaerobically incubated ones, suggesting that the aerobic incubation gives rise to the senescent antigen. The addition of ferrozine during the aerobic incubation prevented both the IgG binding and the protein alterations seen in the IR spectra, suggesting an intracellular chelation of the released iron by ferrozine.
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Affiliation(s)
- C Signorini
- Institute of General Pathology, University of Siena, Italy
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47
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Ciccoli L, Signorini C, Alessandrini C, Ferrali M, Comporti M. Iron release, lipid peroxidation, and morphological alterations of erythrocytes exposed to acrolein and phenylhydrazine. Exp Mol Pathol 1994; 60:108-18. [PMID: 8070539 DOI: 10.1006/exmp.1994.1010] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Iron is released in a free [desferrioxamine (DFO)-chelatable] form in mouse erythrocytes incubated with the oxidizing agents acrolein and phenylhydrazine or in erythrocytes drawn from allyl alcohol-intoxicated mice. The release is accompanied by peroxidation of membrane lipids when the cells are depleted of glutathione. Lipid peroxidation is always followed by the lysis of the cells. The release of iron is also accompanied by methemoglobin formation, but the extent of the release does not correlate with the level of methemoglobin production. The addition of DFO to the incubation mixture or the preincubation of the erythrocytes with DFO in millimolar concentrations completely prevents both lipid peroxidation and hemolysis while not significantly changing the level of iron release. Morphological studies carried out with scanning electron microscopy showed a number of alterations in the shape of the incubated erythrocytes, including echinocyte transformation and the appearance of codocyte, stomatocyte, and cnizocyte like forms. These alterations were more prominent with increasing lipid peroxidation and hemolysis, even if occurring in their absence. On the contrary, the appearance of pits and holes was strictly associated with lipid peroxidation and lysis.
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Affiliation(s)
- L Ciccoli
- Istituto di Patologia Generale, Università di Siena, Italy
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Bavassano B, Iucci N, Lepping RP, Signorini C, Smith EJ, Villoresi G. Galactic cosmic ray modulation and interplanetary medium perturbations due to a long-living active region during October 1989. ACTA ACUST UNITED AC 1994. [DOI: 10.1029/93ja03135] [Citation(s) in RCA: 11] [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: 11/09/2022]
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49
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Abstract
The incubation of a ghost-free erythrocyte lysate with the oxidizing agent phenylhydrazine resulted in both methemoglobin formation and release of iron in a desferrioxamine (DFO)-chelatable form. The released iron was diffusible, as shown by a dialysis carried out simultaneously with the incubation. When the dialysate was added to erythrocyte ghosts or to microsomes from liver or brain, lipid peroxidation developed in the membranes, indicating that the diffusible iron was in a redox active form. The addition of ATP to the lysate markedly increased both iron diffusion and lipid peroxidation in the membranes subsequently added to the dialysate. The possible implication of these data in some well known pathologies is discussed.
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Affiliation(s)
- M Ferrali
- Istituto di Patologia Generale, Università di Siena, Italy
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50
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Signorini C, Conforto AM. On the biological effects of cosmic rays: epidemiological studies. Nuovo Cimento C 1992; 15:565-73. [PMID: 11541732 DOI: 10.1007/bf02507830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Determining the biological effects of cosmic rays and other natural ionizing radiations, could possibly help us in shedding light on the more general problem of low-dose ionizing-radiation effects. In this work we provide a survey of the most recent studies available on epidemiological methods: we discuss the main difficulties in using these methods, as well as the discrepancies in their results.
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Affiliation(s)
- C Signorini
- IFSI-CNR, Universita "La Sapienza", Roma, Italia
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