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Akinci M, Sánchez-Benavides G, Brugulat-Serrat A, Peña-Gómez C, Palpatzis E, Shekari M, Deulofeu C, Fuentes-Julian S, Salvadó G, González-de-Echávarri JM, Suárez-Calvet M, Minguillón C, Fauria K, Molinuevo JL, Gispert JD, Grau-Rivera O, Arenaza-Urquijo EM, Beteta A, Cacciaglia R, Cañas A, Cumplido I, Dominguez R, Emilio M, Falcon C, Hernandez L, Huesa G, Huguet J, Marne P, Menchón T, Operto G, Polo A, Rodríguez-Fernández B, Pradas S, Sadeghi I, Soteras A, Stankeviciute L, Vilanova M, Vilor-Tejedor N. Subjective cognitive decline and anxious/depressive symptoms during the COVID-19 pandemic: what is the role of stress perception, stress resilience, and β-amyloid? Alzheimers Res Ther 2022; 14:126. [PMID: 36068641 PMCID: PMC9446623 DOI: 10.1186/s13195-022-01068-7] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 08/28/2022] [Indexed: 11/10/2022]
Abstract
Abstract
Background
The COVID-19 pandemic may worsen the mental health of people reporting subjective cognitive decline (SCD) and therefore their clinical prognosis. We aimed to investigate the association between the intensity of SCD and anxious/depressive symptoms during confinement and the underlying mechanisms.
Methods
Two hundred fifty cognitively unimpaired participants completed the Hospital Anxiety and Depression Scale (HADS) and SCD-Questionnaire (SCD-Q) and underwent amyloid-β positron emission tomography imaging with [18F] flutemetamol (N = 205) on average 2.4 (± 0.8) years before the COVID-19 confinement. During the confinement, participants completed the HADS, Perceived Stress Scale (PSS), Brief Resilience Scale (BRS), and an ad hoc questionnaire on worries (access to primary products, self-protection materials, economic situation) and lifestyle changes (sleep duration, sleep quality, eating habits). We investigated stress-related measurements, worries, and lifestyle changes in relation to SCD. We then conducted an analysis of covariance to investigate the association of SCD-Q with HADS scores during the confinement while controlling for pre-confinement anxiety/depression scores and demographics. Furthermore, we introduced amyloid-β positivity, PSS, and BRS in the models and performed mediation analyses to explore the mechanisms explaining the association between SCD and anxiety/depression.
Results
In the whole sample, the average SCD-Q score was 4.1 (± 4.4); 70 (28%) participants were classified as SCD, and 26 (12.7%) were amyloid-β-positive. During the confinement, participants reporting SCD showed higher PSS (p = 0.035) but not BRS scores (p = 0.65) than those that did not report SCD. No differences in worries or lifestyle changes were observed. Higher SCD-Q scores showed an association with greater anxiety/depression scores irrespective of pre-confinement anxiety/depression levels (p = 0.002). This association was not significant after introducing amyloid-β positivity and stress-related variables in the model (p = 0.069). Amyloid-β positivity and PSS were associated with greater HADS irrespective of pre-confinement anxiety/depression scores (p = 0.023; p < 0.001). The association of SCD-Q with HADS was mediated by PSS (p = 0.01).
Conclusions
Higher intensity of SCD, amyloid-β positivity, and stress perception showed independent associations with anxious/depressive symptoms during the COVID-19 confinement irrespective of pre-confinement anxiety/depression levels. The association of SCD intensity with anxiety/depression was mediated by stress perception, suggesting stress regulation as a potential intervention to reduce affective symptomatology in the SCD population in the face of stressors.
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Polo A, Carta M, Delogu F, Rustici M, Budroni MA. Controlling Nonlinear Dynamics of Milling Bodies in Mechanochemical Devices Driven by Pendular Forcing. Front Chem 2022; 10:915217. [PMID: 35991610 PMCID: PMC9388739 DOI: 10.3389/fchem.2022.915217] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/20/2022] [Indexed: 11/26/2022] Open
Abstract
Understanding the dynamics of milling bodies is key to optimize the mixing and the transfer of mechanical energy in mechanochemical processing. In this work, we present a comparative study of mechanochemical reactors driven by harmonic pendular forcing and characterized by different geometries of the lateral borders. We show that the shape of the reactor bases, either flat or curved, along with the size of the milling body and the elasticity of the collisions, represents relevant parameters that govern the dynamical regimes within the system and can control the transition from periodic to chaotic behaviors. We single out possible criteria to preserve target dynamical scenarios when the size of the milling body is changed, by adapting the relative extent of the spatial domain. This allows us to modulate the average energy of the collisions while maintaining the same dynamics and paves the way for a unifying framework to control the dynamical response in different experimental conditions. We finally explore the dynamical and energetic impact of an increasingly asymmetric mechanical force.
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Lorenzini L, Ansems LT, Lopes Alves I, Ingala S, Vállez García D, Tomassen J, Sudre C, Salvadó G, Shekari M, Operto G, Brugulat-Serrat A, Sánchez-Benavides G, ten Kate M, Tijms B, Wink AM, Mutsaerts HJMM, den Braber A, Visser PJ, van Berckel BNM, Gispert JD, Barkhof F, Collij LE, Beteta A, Brugulat A, Cacciaglia R, Cañas A, Deulofeu C, Cumplido I, Dominguez R, Emilio M, Fauria K, Fuentes S, Hernandez L, Huesa G, Huguet J, Marne P, Menchón T, Polo A, Pradas S, Rodriguez-Fernandez B, Sala-Vila A, Sánchez-Benavides G, Soteras A, Vilanova M. Regional associations of white matter hyperintensities and early cortical amyloid pathology. Brain Commun 2022; 4:fcac150. [PMID: 35783557 PMCID: PMC9246276 DOI: 10.1093/braincomms/fcac150] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/11/2022] [Accepted: 06/09/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
White matter hyperintensities (WMHs) have a heterogeneous aetiology, associated with both vascular risk factors and amyloidosis due to Alzheimer’s disease. While spatial distribution of both amyloid and WM lesions carry important information for the underlying pathogenic mechanisms, the regional relationship between these two pathologies and their joint contribution to early cognitive deterioration remains largely unexplored.
We included 662 non-demented participants from three Amyloid Imaging to Prevent Alzheimer’s disease (AMYPAD)-affiliated cohorts: EPAD-LCS (N = 176), ALFA+ (N = 310), and EMIF-AD PreclinAD Twin60++ (N = 176). Using PET imaging, cortical amyloid burden was assessed regionally within early accumulating regions (medial orbitofrontal, precuneus, and cuneus) and globally, using the Centiloid method. Regional WMH volume was computed using Bayesian Model Selection. Global associations between WMH, amyloid, and cardiovascular risk scores (Framingham and CAIDE) were assessed using linear models. Partial least square (PLS) regression was used to identify regional associations. Models were adjusted for age, sex, and APOE-e4 status. Individual PLS scores were then related to cognitive performance in 4 domains (attention, memory, executive functioning, and language).
While no significant global association was found, the PLS model yielded two components of interest. In the first PLS component, a fronto-parietal WMH pattern was associated with medial orbitofrontal–precuneal amyloid, vascular risk, and age. Component 2 showed a posterior WMH pattern associated with precuneus-cuneus amyloid, less related to age or vascular risk. Component 1 was associated with lower performance in all cognitive domains, while component 2 only with worse memory.
In a large pre-dementia population, we observed two distinct patterns of regional associations between WMH and amyloid burden, and demonstrated their joint influence on cognitive processes. These two components could reflect the existence of vascular-dependent and -independent manifestations of WMH-amyloid regional association that might be related to distinct primary pathophysiology.
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Affiliation(s)
- Luigi Lorenzini
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Loes T Ansems
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Isadora Lopes Alves
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Silvia Ingala
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - David Vállez García
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Jori Tomassen
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC , Amsterdam , The Netherlands
| | - Carole Sudre
- Centre for Medical Image Computing (CMIC), Departments of Medical Physics & Biomedical Engineering and Computer Science, University College London , UK
- MRC Unit for Lifelong Health and Ageing - University College London , UK
- School of Biomedical Engineering , King’s College London UK
| | - Gemma Salvadó
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
| | - Mahnaz Shekari
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
- Universitat Pompeu Fabra , Barcelona , Spain
| | - Gregory Operto
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES) , Madrid , Spain
| | - Anna Brugulat-Serrat
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES) , Madrid , Spain
- Atlantic Fellow for Equity in Brain Health at the University of California San Francisco , SanFrancisco, California , USA
| | - Gonzalo Sánchez-Benavides
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
- Centro de Investigación Biomédica en Red de Fragilidad Y Envejecimiento Saludable (CIBERFES) , Madrid , Spain
| | - Mara ten Kate
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC , Amsterdam , The Netherlands
| | - Betty Tijms
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC , Amsterdam , The Netherlands
| | - Alle Meije Wink
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Henk J M M Mutsaerts
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Anouk den Braber
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC , Amsterdam , The Netherlands
- Department. of Biological Psychology, Vrije Universiteit Amsterdam, Neuroscience Amsterdam , Amsterdam , The Netherlands
| | - Pieter Jelle Visser
- Department of Neurology, Alzheimer Center Amsterdam, Amsterdam Neuroscience, Vrije Universiteit Amsterdam, Amsterdam UMC , Amsterdam , The Netherlands
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University , Maastricht , The Netherlands
| | - Bart N M van Berckel
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
| | - Juan Domingo Gispert
- Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation , Barcelona , Spain
- IMIM (Hospital del Mar Medical Research Institute) , Barcelona , Spain
- Universitat Pompeu Fabra , Barcelona , Spain
- Centro de Investigación Biomédica en Red Bioingeniería, Biomateriales Y Nanomedicina , Madrid , Spain
| | - Frederik Barkhof
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
- Queen Square Institute of Neurology and Centre for Medical Image Computing, University College London , London , UK
| | - Lyduine E Collij
- Dept. of Radiology and Nuclear Medicine, Amsterdam University Medical Center, Amsterdam Neuroscience , Amsterdam , The Netherlands
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Yap M, Wilson B, Oar A, Borras J, Bourque J, Lievens Y, Moraes F, Malik M, Polo A, Rodin D, Romero Y, Stevens L, Zubizarreta E. MO-0056 The prioritisation of radiotherapy in National Cancer Control Plans: a global study. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)02289-7] [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: 11/30/2022]
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Scott A, Polo A, Zubizarreta E, Aidoo C, Milosevic M, Rodin D. Access to Radiotherapy in Ghana: A Geospatial Analysis. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.276] [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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Taku N, Polo A, Zubizarreta EH, Prasad RR, Hopkins K. External Beam Radiotherapy in Western Africa: 1969-2019. Clin Oncol (R Coll Radiol) 2021; 33:e511-e520. [PMID: 34140206 DOI: 10.1016/j.clon.2021.05.003] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 04/15/2021] [Accepted: 05/12/2021] [Indexed: 01/22/2023]
Abstract
AIMS We describe the absolute and per capita numbers of megavoltage radiotherapy machines (MVMs) in Western Africa from 1969 to 2019. MATERIALS AND METHODS Western Africa was defined in accordance with the United Nations' delineation and inclusive of 16 countries. A literature search for publications detailing the number of cobalt-60 machines (COs) and linear accelerators (LINACs) in radiotherapy centres was carried out. Population data from the World Bank Group and crude cancer rates from the International Agency for Research on Cancer were used to calculate ratios of million persons per MVM and MVMs per 1000 cancer cases. RESULTS The numbers of MVMs in Western Africa in 1969, 1979, 1989, 1999 and 2009 were zero, two, three, six and nine, respectively. In 2019 there were 22 MVMs distributed across Ghana (five), Côte d'Ivoire (two), Mali (one), Mauritania (two), Nigeria (nine) and Senegal (three). Nine countries (56.3%) had no history of external beam radiotherapy (EBRT). The largest increase in absolute EBRT capacity occurred from 2017 to 2019, during which 13 MVMs were commissioned. The largest decrease in EBRT capacity occurred from 2015 to 2017, during which four LINACs and three COs were rendered non-operational. The ratio of million persons per MVM improved from 67.0 in 1979 to 17.8 in 2019. As of 2019, there was 0.09 MVM per 1000 cancer cases. CONCLUSIONS Western African nations have experienced an increase in the absolute number of MVMs and per capita radiotherapy capacity during the last 50 years, especially in the last decade. As non-functional LINACs contributed to a temporary decline in the EBRT infrastructure, dual use of CO/LINAC technologies may act to promote the availability of EBRT treatment in centres with capacity for multiple MVMs.
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Affiliation(s)
- N Taku
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - A Polo
- Applied Radiation Biology and Radiotherapy Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - E H Zubizarreta
- Applied Radiation Biology and Radiotherapy Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria
| | - R R Prasad
- State Cancer Institute, Indira Gandhi Institute of Medical Sciences, Sheikhpura, Patna, India
| | - K Hopkins
- Applied Radiation Biology and Radiotherapy Section, Division of Human Health, International Atomic Energy Agency, Vienna, Austria.
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Taku N, Polo A, Zubizarreta E, Prasad R, Hopkins K. External Beam Radiotherapy in West Africa: 1979 - 2019. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2444] [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: 11/28/2022]
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Chan J, Friborg J, Zubizarreta E, van Eck J, Hanna T, Bourque J, Gaudet M, Dennis K, Olson R, Coleman C, Petersen A, Grau C, Abdel-Wahab M, Brundage M, Slotman B, Polo A. Geographic Accessibility to Radiotherapy in Canada and Greenland for Indigenous Populations: A Quantitative Approach to Highlighting Inequities and Exploring Solutions. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.2448] [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: 10/23/2022]
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Gomez-Herrero E, Tobajas M, Polo A, Rodriguez JJ, Mohedano AF. Toxicity and inhibition assessment of ionic liquids by activated sludge. Ecotoxicol Environ Saf 2020; 187:109836. [PMID: 31675504 DOI: 10.1016/j.ecoenv.2019.109836] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 08/05/2019] [Revised: 10/01/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Toxicity of 13 ionic liquids (ILs) corresponding to different families were studied by inhibition respiration assays (15 min) using activated sludge. Toxicity increased as increasing the number of carbons in the alkyl-chain of imidazolium-based ILs, with EC50 values from 4.19 to 0.17 for 1-ethyl-3-methylimidazolium chloride ([Emim][Cl]) and 1-octyl-3-methylimidazolium chloride ([Omim][Cl]), respectively. An increase in toxicity was observed for aromatic-based ILs (pyridinium- and imidazolium-based ILs) due to the hydrophobic character of the head groups in comparison with linear structures as phosphonium and ammonium cations. Among to the anions studied fixing [Emim]+ as cation, [HSO4]- and [NTf2]- presented low EC50 values (0.34 mM and 1.69 mM, respectively) while [Cl]- and [EtSO4]- were considered harmless anions due to the hydrophilic character of chloride and the organic nature of [EtSO4]-. ILs toxicity/inhibition was determined by adding a biodegradable compound and measuring the sludge response after being in contact with the ILs for at least 15 h. The exposure of sewage sludge to ILs for more than 15 min used in short inhibition assays caused more toxic effect on microorganisms, even for [Choline][NTf2], previously defined as practically harmless (EC50 = 2.79 mM). Biodegradability assays confirmed the biodegradable nature of choline cation, related with TOC conversion of 40%, only due to cation consumption. No oxygen consumption or even lysis of microbial cells was observed for Tetrabutylammonium bis(trifluoromethylsulfonyl)imide and for 1-Ethyl-3-methylimidazolium hydrogensulphate due to the presence of anions previously defined as hazardous ([NTf2]- and [HSO4]-), maintaining their recalcitrant character to sewage systems.
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Affiliation(s)
- E Gomez-Herrero
- Department of Chemical Engineering, Faculty of Science, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain.
| | - M Tobajas
- Department of Chemical Engineering, Faculty of Science, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain
| | - A Polo
- Department of Chemical Engineering, Faculty of Science, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain
| | - J J Rodriguez
- Department of Chemical Engineering, Faculty of Science, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain
| | - A F Mohedano
- Department of Chemical Engineering, Faculty of Science, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain
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Konert T, Vogel WV, Paez D, Polo A, Fidarova E, Carvalho H, Duarte PS, Zuliani AC, Santos AO, Altuhhova D, Karusoo L, Kapoor R, Sood A, Khader J, Al-Ibraheem A, Numair Y, Abubaker S, Soydal C, Kütük T, Le TA, Canh NX, Bieu BQ, Ha LN, Belderbos JSA, MacManus MP, Thorwarth D, Hanna GG. Introducing FDG PET/CT-guided chemoradiotherapy for stage III NSCLC in low- and middle-income countries: preliminary results from the IAEA PERTAIN trial. Eur J Nucl Med Mol Imaging 2019; 46:2235-2243. [PMID: 31367906 PMCID: PMC6717604 DOI: 10.1007/s00259-019-04421-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 03/06/2019] [Accepted: 06/30/2019] [Indexed: 12/24/2022]
Abstract
Purpose Patients with stage III non-small-cell lung cancer (NSCLC) treated with chemoradiotherapy (CRT) in low- and middle-income countries (LMIC) continue to have a poor prognosis. It is known that FDG PET/CT improves staging, treatment selection and target volume delineation (TVD), and although its use has grown rapidly, it is still not widely available in LMIC. CRT is often used as sequential treatment, but is known to be more effective when given concurrently. The aim of the PERTAIN study was to assess the impact of introducing FDG PET/CT-guided concurrent CRT, supported by training and quality control (QC), on the overall survival (OS) and progression-free survival (PFS) of patients with stage III NSCLC. Methods The study included patients with stage III NSCLC from nine medical centres in seven countries. A retrospective cohort was managed according to local practices between January 2010 and July 2014, which involved only optional diagnostic FDG PET/CT for staging (not for TVD), followed by sequential or concurrent CRT. A prospective cohort between August 2015 and October 2018 was treated according to the study protocol including FDG PET/CT in treatment position for staging and multimodal TVD followed by concurrent CRT by specialists trained in protocol-specific TVD and with TVD QC. Kaplan–Meier analysis was used to assess OS and PFS in the retrospective and prospective cohorts. Results Guidelines for FDG PET/CT image acquisition and TVD were developed and published. All specialists involved in the PERTAIN study received training between June 2014 and May 2016. The PET/CT scanners used received EARL accreditation. In November 2018 a planned interim analysis was performed including 230 patients in the retrospective cohort with a median follow-up of 14 months and 128 patients in the prospective cohort, of whom 69 had a follow-up of at least 1 year. Using the Kaplan–Meier method, OS was significantly longer in the prospective cohort than in the retrospective cohort (23 vs. 14 months, p = 0.012). In addition, median PFS was significantly longer in the prospective cohort than in the retrospective cohort (17 vs. 11 months, p = 0.012). Conclusion In the PERTAIN study, the preliminary results indicate that introducing FDG PET/CT-guided concurrent CRT for patients with stage III NSCLC in LMIC resulted in a significant improvement in OS and PFS. The final study results based on complete data are expected in 2020. Electronic supplementary material The online version of this article (10.1007/s00259-019-04421-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- T Konert
- Nuclear Medicine Department, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.
| | - W V Vogel
- Nuclear Medicine Department, Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX, Amsterdam, The Netherlands.,Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - D Paez
- Division of Human Health, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - A Polo
- Division of Human Health, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - E Fidarova
- Division of Human Health, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Vienna, Austria
| | - H Carvalho
- Department of Radiology and Oncology, Faculty of Medicine, University of São Paulo - Institute of Cancer of Sao Paulo State, São Paulo, Brazil
| | - P S Duarte
- Department of Radiology and Oncology, Faculty of Medicine, University of São Paulo - Institute of Cancer of Sao Paulo State, São Paulo, Brazil
| | - A C Zuliani
- Department of Radiation Oncology and Nuclear Medicine Department, Hospital das Clínicas, Campinas University, Campinas, Brazil
| | - A O Santos
- Department of Radiation Oncology and Nuclear Medicine Department, Hospital das Clínicas, Campinas University, Campinas, Brazil
| | - D Altuhhova
- Department of Radiation Oncology and Radiology Department, North Estonia Medical Center, Tallinn, Estonia
| | - L Karusoo
- Department of Radiation Oncology and Radiology Department, North Estonia Medical Center, Tallinn, Estonia
| | - R Kapoor
- Department of Radiation Oncology and Nuclear Medicine Department, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - A Sood
- Department of Radiation Oncology and Nuclear Medicine Department, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - J Khader
- Department of Radiation Oncology and Nuclear Medicine Department, King Hussein Cancer Center, Amman, Jordan
| | - A Al-Ibraheem
- Department of Radiation Oncology and Nuclear Medicine Department, King Hussein Cancer Center, Amman, Jordan
| | - Y Numair
- Department of Radiation Oncology and Nuclear Medicine Department, Institute of Nuclear Medicine and Oncology, Lahore, Pakistan
| | - S Abubaker
- Department of Radiation Oncology and Nuclear Medicine Department, Institute of Nuclear Medicine and Oncology, Lahore, Pakistan
| | - C Soydal
- Department of Radiation Oncology and Nuclear Medicine Department, Ankara University School of Medicine, Mamak/Ankara, Turkey
| | - T Kütük
- Department of Radiation Oncology and Nuclear Medicine Department, Ankara University School of Medicine, Mamak/Ankara, Turkey
| | - T A Le
- Department of Radiation Oncology and Nuclear Medicine Department, Cho Ray Hospital, University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - N X Canh
- Department of Radiation Oncology and Nuclear Medicine Department, Cho Ray Hospital, University of Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - B Q Bieu
- Department of Radiation Oncology and Radiosurgery, Tran Hung Dao Hospital, Hanoi, Vietnam
| | - L N Ha
- Department of Radiation Oncology and Radiosurgery, Tran Hung Dao Hospital, Hanoi, Vietnam
| | - J S A Belderbos
- Department of Radiation Oncology, Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - M P MacManus
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, VIC, 3000, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia
| | - D Thorwarth
- Section for Biomedical Physics, Department of Radiation Oncology, University Hospital Tübingen, Tübingen, Germany
| | - G G Hanna
- Department of Radiation Oncology, Peter MacCallum Cancer Centre, 305 Grattan Street, Melbourne, VIC, 3000, Australia. .,Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, Australia.
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Salomone G, Ricci S, Rossi F, Turazzini M, Annese V, Del Colle R, Polo A. Electrophysiological assessment of lower cranial nerve palsy triggered by spontaneous extracranial carotid dissection. Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2018.09.070] [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: 11/28/2022]
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Chan J, Polo A, Abdel-Wahab M, Hirata D, Bourque J, Zubizarreta E. Access to Radiation Therapy among Indigenous Populations in Canada. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1197] [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: 10/28/2022]
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Chan J, Polo A, Abdel-Wahab M, Hirata D, Bourque J, Zubizarreta E. Disparities in Accessibility to Radiation Therapy in a High-Income Country: The Case of Canada. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1196] [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: 10/28/2022]
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Abstract
Background and context: Fifty-three countries are members of the Commonwealth. These countries span Africa, Asia, the Americas, Europe and the Pacific and are diverse - they are among the world's largest, smallest, richest and poorest countries. Thirty-one of these members are classified as small states - countries with a population size of 1.5 million people or less and larger member states that share similar characteristics with them. The Commonwealth Secretariat is planning to tackle the problem of cervical cancer in their low and middle member states (LMIC) through the project “Cervical Cancer in the Commonwealth: Collective Action”. There are 209,100 cervical cancer cases diagnosed per year in the Commonwealth, and in 167,300 cases radiotherapy treatment is indicated. Aim: To analyze the problem of cervical cancer in low and middle-income countries of the Commonwealth and to propose the first step for a collective action. Strategy/Tactics: The treatment of locally advanced cervical cancer includes radiotherapy (teletherapy and brachytherapy) plus concomitant chemotherapy. Cervical cancer has a high rate of curability if brachytherapy is added to teletherapy. We identified radiotherapy departments in Commonwealth LMIC with teletherapy but no brachytherapy and proposed the upgrade of these services to include brachytherapy as a first step. Program/Policy process: The evidence-based treatment of locally advanced cervical cancer is a combination of external beam radiotherapy with chemotherapy and brachytherapy. Brachytherapy has played a major role during many decades in the treatment of gynecologic cancer with good clinical results. EBRT combined with BT leads to superior survival for patients with cervix cancer as compared with EBRT alone, and additionally, MR image-guided BT further improves local control and survival. Countries with no access to BT may only offer palliative treatment to women diagnosed with locally advanced cervical cancer. Any curative attempt for these patients should include brachytherapy. The addition of brachytherapy to external beam radiotherapy in the treatment of cervical cancer is associated with a 12% increase in the 4-y overall survival rates and 13% increase in cause-specify survival. Brachytherapy can save at least 12% more cervical cancer lives than radiotherapy alone. These differences would be much bigger in LMIC because of the limited technology used for external beam radiotherapy. Outcomes: Each high dose rate (HDR) brachytherapy afterloader can treat up to 666 patients per year, of which 466 (70%) could be potentially cured. The capital costs for installing an HDR afterloader is around US$ 1 million, including equipment and building, the annual operating costs are US$ 473,000, and the costs of brachytherapy are US$ 710 per patient. In the lifetime of an HDR afterloader (10 years), 4660 patients could be cured per afterloader installed. What was learned: Brachytherapy saves lives!
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Affiliation(s)
| | - M. Lodge
- International Network for CancerTreatment and Research, Oxford, United Kingdom
| | | | - A. Polo
- International Atomic Energy Agency, Vienna, Austria
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Abdel-Wahab M, Paez D, Zubizarreta E, Polo A. Improving Access to Treatment of Gynecologic Cancers/Cervix Cancers. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.70700] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Aim and purpose: The session aims at outlining actions that the healthcare community can take to improve the current situation and inform cervix cancer control plans. Highlighting the need to address opportunities in the prevention and management of cervix cancer, the session will provide guidance on primary, secondary and tertiary prevention and management of cervix cancer and will discuss the role of radiotherapy, while showcasing examples of collaboration. Audiences: Healthcare professionals with a special interest in women's cancers/cervix cancer and healthcare services planning. Cancer care advocates and patients advocates Decision makers involved in the planning of health care services Stakeholders in LMICs Suggested panel participants: Cherian Varghese, WHO Topic “The UN Joint Global Programme on Cervical Cancer Prevention and Control” The speaker will present this important initiative that builds on the world's collective endeavors so that in a generation, death from cervical cancer ceases to be a public health issue. Kennedy Lishimpi Topic, “Case study: Zambia” Illustrate how Zambia went from having no radiotherapy facilities to being able to offer up-to-date treatment to cancer patients Lusaka, Zambia Ted Trimble, NCI Topic, “NCI Activities in Support of Cervical Cancer” To present the important initiatives of the NCI/NHI to tackle the burden of gynecologic cancers Bethesda, Maryland May Abdel-Wahab, IAEA Topic, “International Program Results on the Ground in Support of Cervical Cancer” The speaker will present available support cooperation, education and training, and the need for enhanced safety and quality and use an example of interventions in Africa.
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Affiliation(s)
| | - D. Paez
- International Atomic Energy Agency, Vienna, Austria
| | | | - A. Polo
- International Atomic Energy Agency, Vienna, Austria
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Paez D, Zubizarreta E, Abdel-Wahab M, Polo A. Activities of the International Atomic Energy Agency in the Field of Cervical Cancer. J Glob Oncol 2018. [DOI: 10.1200/jgo.18.70200] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background and context: In 2012, 560,000 women were diagnosed with cervical cancer (CXCA) worldwide and 266,000 women died of the disease: 86% of cases and 88% of deaths occurred in low- and middle-income countries (LMICs), and two thirds of the cases are locally advanced. For locally advanced CXCA the evidence-based treatment is a combination of external beam radiotherapy with chemotherapy and brachytherapy. Five-year overall survival for all stages combined ranges between 60%-69%, depending on the case-mix and the treatment modalities used. Countries with no access to radiotherapy may only offer palliative treatment to women diagnosed with locally advanced cervical cancer. Any curative attempt for these patients should include the two components of radiotherapy: concomitant radio-chemotherapy and brachytherapy. Radiotherapy is also a cost-effective treatment modality. Aim: To show the contribution and impact of the International Atomic Energy Agency (IAEA) to the improvement of results of CXCA in LMICs. Strategy/Tactics: Through its various programs, such as the Technical Cooperation programs, the Human Health program and the Program of Action for Cancer Therapy, the IAEA is committed to address these disproportionate geographic incidence and mortality rates introducing, expanding and improving radiotherapy services, working with partners such as WHO to improve cancer diagnosis, treatment, care, and control through collective action in these countries. Program/Policy process: During the last six decades, the IAEA has helped in addressing the growing cancer burden, delivering cancer-related assistance to LMICs, with financial and in-kind support from member states, donors and partners. The IAEA assistance has been primarily facilitated through the deployment of robust radiotherapy and nuclear medicine programs, coordinated research activities, documentation system and quality assurance program. This has enabled many member states to establish safe and effective diagnostic imaging and radiation therapy capacity to provide treatment and higher quality care to many of their cancer patients. The Program of Action for Cancer Therapy (PACT) is the IAEA's umbrella program for combating cancer and builds upon the above experience in radiation medicine expertise and technology. The WHO-IAEA Joint Program enable LMI member states to introduce, expand and improve their cancer treatment capacities and therapeutic effectiveness by integrating radiotherapy into a comprehensive national cancer control program. Outcomes: The IAEA provides tools for improving the practice of radiation medicine around the world. A fully implemented department (megavoltage and afterloading units, trained staff and quality assurance procedures in place) can treat up to 666 new CXCA cases per year, of which around 70% (466) can be cured. What was learned: Investing in radiotherapy can save lives!
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Affiliation(s)
- D. Paez
- International Atomic Energy Agency, Vienna, Austria
| | | | | | - A. Polo
- International Atomic Energy Agency, Vienna, Austria
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17
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Hendry J, Jones G, Mahantshetty U, Sarria G, da Motta N, Fidarova E, Abdel-Wahab M, Prasad R, Polo A, Zubizarreta E. Radiobiological Analysis of Outcomes Using External Beam Radiotherapy Plus High Dose-Rate Brachytherapy (4x7 Gy or 2x9 Gy) for Cervical Cancer in a Multi-Institution Trial. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.09.009] [Citation(s) in RCA: 4] [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: 10/18/2022]
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18
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Liu Y, Polo A, Zequera M, Harba R, Canals R, Vilcahuaman L, Bello Y. Detection of diabetic foot hyperthermia by using a regionalization method, based on the plantar angiosomes, on infrared images. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:1389-1392. [PMID: 28268585 DOI: 10.1109/embc.2016.7590967] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Prevention of serious diabetic foot complication like ulceration or infection is an important issue. As the development of thermal graphic technologies, foot temperature-guided avoidance therapy has been recommended. Doctors from Hospital National Dos de Mayo are studying on the risk of the diabetic foot passing from Grade 0 to Grade 1 in the Wagner Scale. This risk to develop ulcers is related to the temperature difference of corresponding area between left and right foot. Generally speaking, the diabetic foot with greater mean temperature difference has more potential to develop ulcers; especially, area whose temperature difference of more than 2.2°C is where doctors and patients must pay much attention to potential problems like ulceration or infection. A system in Visual Studio was developed taking the thermal images as input and producing image with absolute mean temperature difference of 7different regions or four plantar angiosomes as output. The program process contained essential medical image processing issues such as segmentation, location and regionalization, in which adapted algorithms were implemented. From a database of 85 patients provided only 60 were used due to the quality of acquisition.
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Zubizarreta E, Polo A. PV-0093: Availability of radiotherapy in Africa: past and present of an unsolved problem. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30537-6] [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: 10/19/2022]
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Abdel-Wahab M, Fidarova E, Polo A. Global Access to Radiotherapy in Low- and Middle-income Countries. Clin Oncol (R Coll Radiol) 2017; 29:99-104. [DOI: 10.1016/j.clon.2016.12.004] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 12/12/2016] [Accepted: 12/12/2016] [Indexed: 01/11/2023]
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21
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Polo A, Duran J, Juanola R, Real J, Benet-Buchholz J, Solà M, Poater A. Tuning diastereoisomerism in platinum(ii) phosphino- and aminothiolato hydrido complexes. NEW J CHEM 2017. [DOI: 10.1039/c6nj04042j] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tuning between the cis and trans Pt(ii) based complexes bearing phosphinothiolato and aminothiolato ligands.
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Affiliation(s)
- A. Polo
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - J. Duran
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - R. Juanola
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - J. Real
- Departament de Química
- Universitat Autònoma de Barcelona
- 08193 Bellaterra
- Spain
| | - J. Benet-Buchholz
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona
- Spain
| | - M. Solà
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
| | - A. Poater
- Departament de Química
- Universitat de Girona
- Facultat de Ciències
- 17003 Girona
- Spain
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Querin G, Bertolin C, Martinuzzi A, Bassi MT, Arnoldi A, Polo A, Pegoraro E, Sorarù G. The blurred scenario of motor neuron disorders linked to Spatacsin mutations: a case report. Eur J Neurol 2015; 21:e85-6. [PMID: 25209065 DOI: 10.1111/ene.12481] [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: 01/29/2014] [Accepted: 05/05/2014] [Indexed: 10/24/2022]
Affiliation(s)
- G Querin
- Department of Neurosciences, University of Padova, Padova, Italy
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Rovirosa Á, Anchuelo J, Crispin V, Gutiérrez C, Herreros A, Herruzo I, Menéndez JC, Pino P, Polo A, Rodríguez S. Recommendations of the Spanish Brachytherapy Group of SEOR for HDR endoluminal treatments. Part 1: Oesophagus. Clin Transl Oncol 2015; 17:581-9. [DOI: 10.1007/s12094-015-1284-0] [Citation(s) in RCA: 3] [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] [Received: 03/11/2015] [Accepted: 03/20/2015] [Indexed: 11/25/2022]
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Diaz A, del Romero J, Rodriguez C, Alastrue I, Belda J, Bru FJ, Cámara MM, Junquera ML, Sanz I, Viloria LJ, Gil L, Martínez E, Gual F, Landa MC, Pueyo I, Ureña JM, Martínez B, Varela JA, Polo A, Azpiri MA, Diez M. Effects of region of birth, educational level and age on late presentation among men who have sex with men newly diagnosed with HIV in a network of STI/HIV counselling and testing clinics in Spain. ACTA ACUST UNITED AC 2015; 20. [PMID: 25884148 DOI: 10.2807/1560-7917.es2015.20.14.21088] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This paper analyses late presentation (LP) of HIV infection, and its determinants, among men who have sex with men (MSM) in Spain, newly diagnosed with HIV (2003-2011) in 15 sexually transmitted infection/HIV counselling and testing clinics. LP was defined as <350 CD4 cells/µL or AIDS. In total, 3,081 MSM were included (2,499 having CD4/AIDS); overall LP was 25.3%. LP was higher in men older than 34 years, those not previously HIV-tested (adjusted odds ratio (aOR):3.1; 95% confidence intervals (CI):2.3-4.2) , and those tested > 12 months before diagnosis (12-24 months (aOR:1.4; 95% CI:1.0-2.0); > 24 months (aOR:2.2; 95% CI:1.7-3.0)). LP was less likely in MSM reporting a known HIV-infected partner as infection source or symptoms compatible with acute retroviral syndrome. 'Region of birth' interacted with 'educational level' and 'steady partner as infection source': only African and Latin-American MSM with low educational level were more likely to present late; Latin-American men attributing their infection to steady partner, but no other MSM, had LP more frequently. In Spain, HIV testing among MSM should be promoted, especially those > 34 years old and migrants with low educational level. The current recommendation that MSM be tested at least once a year is appropriate.
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Affiliation(s)
- A Diaz
- area de Vigilancia del VIH y comportamientos de riesgo, Centro Nacional de Epidemiologia, Instituto de Salud Carlos III, Madrid, Spain
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Gonzalvo V, Polo A, Serrallach F, Gutiérrez A, Peyri E. Clinical study of the effectiveness of the "water of the 3 sulfates" on balanitis and balanoposthitis. Actas Urol Esp 2015; 39:118-21. [PMID: 25262388 DOI: 10.1016/j.acuro.2014.05.005] [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: 05/06/2014] [Accepted: 05/14/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVES Despite scientific literature mentions the application of "water of the 3 sulfates" (copper sulphate, zinc sulphate and alum) as a treatment for acute balanitis and balanoposthitis, no clinical trials evaluating its efficacy have been found. In our study we evaluate the efficacy of this solution in acute balanitis and balanoposthitis. MATERIAL AND METHODS A double-blind randomized study was designed to compare the efficacy of "water of the 3 sulfates" (intervention) with saline solution (control) in 50 patients (30 patients and 20 patients, respectively) who suffer from acute balanitis or balanoposthitis. Exudate, erythema, oedema, burning, and itching were the clinical parameters assessed. RESULTS for all clinical parameters assessed, the outcomes obtained with "water of the 3 sulfates" are higher than control, although significant differences only have been found for exudate. CONCLUSIONS in our study, the "water of the 3 sulfates" is significantly more effective than saline solution for removing exudates in acute balanitis and balanoposthitis. Tolerability was excellent in both treatments.
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Affiliation(s)
- V Gonzalvo
- Servei d'Urología Hospital Lluis Alcanyís de Xàtiva, Xàtiva, España.
| | - A Polo
- Servei d'Urología Hospital Lluis Alcanyís de Xàtiva, Xàtiva, España
| | - F Serrallach
- Servei d'Urología, Hospital Universitari Sagrat Cor, Barcelona, España
| | - A Gutiérrez
- Servei d'Urología, Hospital Universitari Sagrat Cor, Barcelona, España
| | - E Peyri
- Clinica Urológica Dr. Peyri, Barcelona, España
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Loschiavo C, Grecò M, Polo A, Del Colle R. [The use of therapeutic apheresis in neurological diseases and comparison between plasma exchange and immunoadsorption]. G Ital Nefrol 2015; 32:gin/00200.10. [PMID: 25774587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The use of plasmapheresis in neurological diseases with immune-mediated pathogenesis is widely certified. In recent years, the technological evolution of the dialysis membranes allowed to accompany the classical plasma exchange (PEX) treatment of apheresis by means of selective adsorption (IA). It has proved to be of equal therapeutic efficacy and, at the same time, devoid of most of the PEX side effects. The recent guidelines of the American Society for Apheresis (ASFA) and, later, the American Academy of Neurology, outlined directions and diagrams for the application of the method that has found wide use in many neurological diseases on the basis of auto-antibodies; in particular in Myasthenia Gravis, Guillain-Barre Syndrome, Multiple Sclerosis and Chronic Demyelinating Polyradiculoneuropathy. We add our experience in the treatment of 13 patients suffering from Myasthenia Gravis, treated over a four years period with filters containing tryptophan immunoadsorption in polyvinyl alcohol gel. The results confirm the achievement of a rapid regression of clinical symptoms, together with the rapid fall in the levels of antibody against acetylcholine-receptor. Therefore, the method of AI is to be considered of equal therapeutic efficacy of PEX, providing greater security in its use.
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Ferigo L, Rossi F, Piccoli D, Costa B, Del Colle R, Polo A. 46. Motor Evoked Potentials and clinical heterogeneity at onset in ALS. Clin Neurophysiol 2015. [DOI: 10.1016/j.clinph.2014.10.065] [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: 11/16/2022]
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Cappitelli F, Polo A, Villa F. Biofilm Formation in Food Processing Environments is Still Poorly Understood and Controlled. Food Eng Rev 2014. [DOI: 10.1007/s12393-014-9077-8] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Martorell M, Martínez-Pasarell O, Lopez O, Polo A, Sandalinas M, Garcia-Guixé E, Bassas L. Chromosome 16 Abnormalities in Embryos and in Sperm from a Male with a Fragile Site at 16q22.1. Cytogenet Genome Res 2014; 142:134-9. [DOI: 10.1159/000357411] [Citation(s) in RCA: 5] [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] [Accepted: 10/16/2013] [Indexed: 11/19/2022] Open
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Polo A, Alvarez A, Montero A, Hernanz R, Gonzalez Sansegundo C, Ramos A, Cuervo M, Sanchez del Campo I, Perez Aguilar D, Calvo F. A Dose–Response Relationship Exists for Soft-Tissue Sarcomas of the Extremities Treated With Maximum Surgery and Intraoperative Electron Therapy, With or Without External Beam Radiation Therapy: Results of a Multicentric Pooled Analysis. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.428] [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: 11/25/2022]
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Haber A, Polo A, Maj I, Pereira SF, Urbach HP, Verhaegen M. Predictive control of thermally induced wavefront aberrations. Opt Express 2013; 21:21530-21541. [PMID: 24104028 DOI: 10.1364/oe.21.021530] [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] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper we experimentally demonstrate the proof of concept for predictive control of thermally induced wavefront aberrations in optical systems. On the basis of the model of thermally induced wavefront aberrations and using only past wavefront measurements, the proposed adaptive optics controller is able to predict and to compensate the future aberrations. Furthermore, the proposed controller is able to correct wavefront aberrations even when some parameters of the prediction model are unknown. The proposed control strategy can be used in high power optical systems, such as optical lithography machines, where the predictive correction of thermally induced wavefront aberrations is a crucial issue.
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Muraru D, Calore C, Badano LP, Melacini P, Mihaila S, Casablanca S, Cucchini U, Haertel-Miglioranza M, Polo A, Iliceto S. Radial function correlates with heart failure symptoms in hypertrophic cardiomyopathy with normal ejection fraction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p622] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Montero A, Hernanz R, Caballero P, Capuz A, Marcos S, Abondano A, Salgueiro M, Polo A, Fernández-lizarbe E, Ordóñez D, Domínguez J, Ramos A. Low-dose radiotherapy in the conservative treatment of degenerative painful osteoarthritis. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.383] [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: 10/26/2022] Open
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Polo A, Montero A, Salgueiro M, Colmenares R, Abondano A, Candela A, Hervás A, Ramos A. Interstitial HDR brachytherapy for oral tongue cancer: Educational video. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.663] [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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Hervás A, Béjar M, Alvarez S, Yanowsky K, Ordoñez J, Rodríguez-patrón R, García-galloway E, Sánchez R, Marcos S, Polo A, Gomez V, Burgos F, García Sagredo J, Ramos A. Fertility in prostate cancer patients treated with radiation therapy. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.485] [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: 10/26/2022] Open
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Polo A, Álvarez A, Montero A, Hernanz R, González-sansegundo C, Ramos A, Cuervo M, Sánchez del Campo I, Pérez-aguilar D, Calvo F. A dose-response relationship exists for soft tissue sarcomas of the extremities treated with maximum surgery and intraoperative electron therapy, with or without external beam radiotherapy: Results of a multicentric pooled analysis. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.575] [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: 11/16/2022] Open
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Montero A, Álvarez A, Polo A, González-sansegundo C, Hernanz R, García-sabrido J, Cabañas L, González-bayón L, Ramos A, Calvo F. Intraoperative electron radiotherapy (IOeRT) for the treatment of retroperitoneal sarcomas: Results of a multi-institutional pooled analysis. Rep Pract Oncol Radiother 2013. [DOI: 10.1016/j.rpor.2013.03.834] [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: 11/29/2022] Open
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Giacomucci L, Purdy KJ, Zanardini E, Polo A, Cappitelli F. A new non-degenerate primer pair for the specific detection of the nitrite reductase gene nrfA in the genus Desulfovibrio. J Mol Microbiol Biotechnol 2012; 22:345-51. [PMID: 23295220 DOI: 10.1159/000345768] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Dissimilatory nitrate reduction to ammonia (DNRA) is the process in which nitrate is reduced, via nitrite, to ammonia. Bacteria known to carry out DNRA mainly originate from wastewater treatment plants, where DNRA is a relevant process. The ability to carry out DNRA is phylogenetically widespread, and the gene nrfA, encoding for the key enzyme of the second step of the pathway, could be used as a marker for this process. In this study we developed a new primer pair specific for nrfA in the genus Desulfovibrio. The specificity of the primer pair was tested on DNA from thirteen species of Desulfovibrio and DNA from two wastewater samples. PCR amplifications yielded products of the expected size (850 bp), and sequences obtained from Desulfovibrio strains and environmental sample clone libraries matched the Desulfovibrio nrfA gene. Nevertheless, we found nrfA gene sequences in the environmental samples that are not present in the databases. The new primer set can be used to obtain more sequences of the nrfA gene and improve our knowledge of the DNRA pathway in this genus, e.g. with the aim to improve the wastewater treatment process.
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Affiliation(s)
- L Giacomucci
- Dipartimento di Scienze per gli Alimenti, la Nutrizione e l'Ambiente, Università degli Studi di Milano, Milan, Italy
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Polo A, Haber A, Pereira SF, Verhaegen M, Urbach HP. An innovative and efficient method to control the shape of push-pull membrane deformable mirror. Opt Express 2012; 20:27922-27932. [PMID: 23262738 DOI: 10.1364/oe.20.027922] [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: 06/01/2023]
Abstract
We carry out performance characterisation of a commercial push and pull deformable mirror with 48 actuators (Adaptica Srl). We present a detailed description of the system as well as a statistical approach on the identification of the mirror influence function. A new efficient control algorithm to induce the desired wavefront shape is also developed and comparison with other control algorithms present in literature has been made to prove the efficiency of the new approach.
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Affiliation(s)
- A Polo
- Optics Research Group, Delft University of Technology, Delft, The Netherlands.
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Fernández-Lizarbe E, Montero A, Polo A, Hernanz R, Morís R, Formenti S, Ramos A. Pilot study of feasibility and dosimetric comparison of prone versus supine breast radiotherapy. Clin Transl Oncol 2012; 15:450-9. [DOI: 10.1007/s12094-012-0950-8] [Citation(s) in RCA: 20] [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] [Received: 07/20/2012] [Accepted: 09/21/2012] [Indexed: 11/30/2022]
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Daina G, Ramos L, Obradors A, Rius M, Martinez-Pasarell O, Polo A, Del Rey J, Obradors J, Benet J, Navarro J. First successful double-factor PGD for Lynch syndrome: monogenic analysis and comprehensive aneuploidy screening. Clin Genet 2012; 84:70-3. [PMID: 22998423 DOI: 10.1111/cge.12025] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 09/19/2012] [Accepted: 09/19/2012] [Indexed: 11/28/2022]
Abstract
Preimplantation genetic diagnosis (PGD) has been applied worldwide for a great variety of single-gene disorders over the last 20 years. The aim of this work was to perform a double-factor preimplantation genetic diagnosis (DF-PGD) protocol in a family at risk for Lynch syndrome. The family underwent a DF-PGD approach in which two blastomeres from each cleavage-stage embryo were biopsied and used for monogenic and comprehensive cytogenetic analysis, respectively. Fourteen embryos were biopsied for the monogenic disease and after multiple displacement amplification (MDA), 12 embryos were diagnosed; 5 being non-affected and 7 affected by the disease. Thirteen were biopsied to perform the aneuploidy screening by short-comparative genomic hybridization (CGH). The improved DF-PGD approach permitted the selection of not only healthy but also euploid embryos for transfer. This has been the first time a double analysis of embryos has been performed in a family affected by Lynch syndrome, resulting in the birth of two healthy children. The protocol described in this work offers a reliable alternative for single-gene disorder assessment together with a comprehensive aneuploidy screening of the embryos that may increase the chances of pregnancy and birth of transferred embryos.
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Affiliation(s)
- G Daina
- Càtedra de Recerca Eugin-UAB; Unitat de Biologia Cel·lular i Genètica Mèdica, Departament de Biologia Cel·lular, Fisiologia i Immunologia, Facultat de Medicina, Universitat Autònoma de Barcelona, Bellaterra, Spain
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Nascimento A, Grazia S, Otez C, Poo P, Polo A, Jimenez-Mallebrera C, Baas F, Galvez H, Iturriaga C, Colomer J. G.P.87 Demyelinating neuropathy caused by point mutations in PMP22 gene: Phenotype variability. Neuromuscul Disord 2012. [DOI: 10.1016/j.nmd.2012.06.217] [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: 10/28/2022]
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Abstract
We demonstrate for the first time that the Hartmann wavefront sensor (HWS) principle can be applied for characterizing the wavefronts of terahertz (THz) electromagnetic radiation. The THz Hartmann wavefront sensor consists of a metallic plate with an array of holes and a two-dimensional scanable pyro-electric detector. The THz radiation with different wavefronts was generated by a far-infrared gas laser operated at 2.5 THz in combination with a number of objects that result in known wavefronts. To measure the wavefront, a beam passing through an array of holes generates intensity spots, for which the positions of the individual spot centroids are measured and compared with reference positions. The reconstructed wavefronts are in good agreement with the model expectations.
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Affiliation(s)
- M Cui
- SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands.
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Polo A, Kutchoukov V, Bociort F, Pereira SF, Urbach HP. Determination of wavefront structure for a Hartmann wavefront sensor using a phase-retrieval method. Opt Express 2012; 20:7822-32. [PMID: 22453459 DOI: 10.1364/oe.20.007822] [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: 05/26/2023]
Abstract
We apply a phase retrieval algorithm to the intensity pattern of a Hartmann wavefront sensor to measure with enhanced accuracy the phase structure of a Hartmann hole array. It is shown that the rms wavefront error achieved by phase reconstruction is one order of magnitude smaller than the one obtained from a typical centroid algorithm. Experimental results are consistent with a phase measurement performed independently using a Shack-Hartmann wavefront sensor.
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Affiliation(s)
- A Polo
- Optics Research Group, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
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Ferrieres J, Berkenboom G, Coufal Z, James S, Mohacsi A, Pavlides G, Norrbacka K, Sartral M, Paget MA, Tomlin M, Zeymer U, Hoffmann P, Keller F, Blicher TM, Hommel K, Abildstrom SZ, Madsen M, Kamper AL, Rogacev K, Pinsdorf T, Weingartner O, Gerhart M, Welzel E, van Bentum K, Menzner A, Fliser D, Lutjohann D, Heine G, Di Benedetto A, Marcelli D, Giordana G, Cerino F, Gatti E, Otero A, Dominguez-Sardina M, Castineira MC, Crespo JJ, Ferreras A, Mojon A, Ayala DE, Fernandez JR, Hermida RC, Investigadores Proyecto Hygia, Doi Y, Yoshihara F, Iwashima Y, Takata H, Fujii T, Horio T, Nakamura S, Kawano Y, Onofriescu M, Cepoi V, Segall L, Covic A, Kurnatowska I, Grzelak P, Kaczmarska M, Masajtis-Zagajewska A, Rutkowska-Majewska E, Stefanczyk L, Nowicki M, Gozhenko A, Susla O, Shved M, Mysula I, Susla H, Cordeiro Silva Junior AC, Smanio P, Amparo FC, Oliveira MAC, Gonzaga CC, Sousa MG, Passarelli Jr O, Borelli F, Lotaif LD, Sousa AGMR, Amodeo C, Inaguma D, Ando R, Ikeda M, Joki N, Koiwa F, Komatsu Y, Sakaguchi T, Shinoda T, Yamaka T, Shigematsu T, Pizzarelli F, Rossi C, Dattolo P, Tripepi G, Mieth M, Bandinelli S, Zoccali C, Mass R, Ferrucci L, Gifford F, Methven S, Boag DE, Spalding EM, MacGregor MS, Kirsch M, Dorhofer L, Bruning J, Banas B, Kramer BK, Schubert M, Boger CA, Dorhofer L, Kirsch M, Bruning J, Banas B, Kramer BK, Schubert M, Boger CA, Atapour A, Kalantari E, Shahidi S, Mortazavi M, Marron B, Quiros P, Vega N, Garcia-Canton C, Moreno F, Prieto M, Ahijado F, Salgueira M, Paez C, Castellano I, Lerma JL, De Arriba G, Martinez-Ocana JC, Morales A, Ramirez de Orellana M, Ramos A, Duarte V, Ruiz C, Gallego S, Ortiz A, Furuhashi T, Moroi M, Joki N, Hase H, Masai H, Kunimasa T, Nakazato R, Fukuda H, Sugi K, Valluri A, Severn A, Chakraverty S, Palma R, Polo A, Espigares MJ, Manjon M, Cerezo S, Garcia-Agudo R, Aoufi S, Ruiz-Carrillo F, Gonzalez-Carro P, Perez-Roldan F, Tenias JM, Santiago da Silva P, Cunha C, Coelho L, Viana A, Moreira R, Wagner S, Friedman R, Veloso V, Suassuna J, Grinsztejn B, Iimuro S, Imai E, Matsuo S, Watanabe T, Nitta K, Akizawa T, Makino H, Ohashi Y, Hishida A, Fujimoto S, Yano Y, Sato Y, Konta T, Iseki K, Moriyama T, Yamagata K, Tsuruya K, Yoshida H, Asahi K, Watanabe T, Bellasi A, Mandreoli M, Baldrati L, Rigotti A, Corradini M, Russo G, David S, Malmusi G, Di Nicolo P, Orsi C, Poisetti P, Zanbianchi L, Caruso F, Fabbri A, Santoro A, Moranne O, Couchoud C, Pradier C, Esnault V, Vigneau C, Skapinakis P, Ikonomou M, Kyroglou E, Chondrogiannis P, Sygelakis M, Varvara C, Kyriklidou P, Balafa O, Mavreas V, Tsakiris D, Goumenos D, Siamopoulos K, Ikonomou M, Skapinakis P, Eleftheroudi M, Chardalias A, Kyroglou E, Banioti A, Vakianos I, Sygelakis M, Kalaitzidis R, Asimakopoulos K, Tsakiris D, Goumenos D, Siamopoulos K, Methven S, Jardine A, MacGregor M, van der Tol A, Van Biesen W, De Groote G, Verbeke P, Eeckhaut K, Vanholder R, Ivkovic V, Karanovic S, Vukovic Lela I, Juric D, Fistrek M, Kos J, Kovac-Peic A, Pecin I, Premuzic V, Miletic-Medved M, Cvitkovic A, Fodor L, Jelakovic B. General & clinical epidemiology CKD 1-5 (1). Clin Kidney J 2011. [DOI: 10.1093/ndtplus/4.s2.31] [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: 11/13/2022] Open
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de Lucas RH, Montero A, Polo A, Lizarbe EF, Moron AH, García SS, López RM, Ocaña MV, Aguerri AR. 676 poster PERI-OPERATIVE HIGH-DOSE RATE BRACHYRTHERAPY IN THE TREATMENT OF KELOIDS OF THE HEAD AND NECK AREA. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70798-8] [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: 10/18/2022]
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de Lucas RH, Montero A, Capuz B, Lizarbe EF, Polo A, Colmenares R, Moron AH, García SS, Ocaña MV, López RM, Aguerri AR. 732 poster HIGH-DOSE-RATE (HDR) PLESIOTHERAPY WITH CUSTOM-MADE MOULDS FOR THE TREATMENT OF SKIN TUMORS. Radiother Oncol 2011. [DOI: 10.1016/s0167-8140(11)70854-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Polo A, Bociort F, Pereira SF, Urbach HP. Wavefront measurement for EUV lithography system through Hartmann sensor. ACTA ACUST UNITED AC 2011. [DOI: 10.1117/12.877044] [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: 11/14/2022]
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Fernández-Calviño D, Soler-Rovira P, Polo A, Arias-Estévez M, Plaza C. Influence of humified organic matter on copper behavior in acid polluted soils. Environ Pollut 2010; 158:3634-3641. [PMID: 20832151 DOI: 10.1016/j.envpol.2010.08.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 07/29/2010] [Accepted: 08/03/2010] [Indexed: 05/29/2023]
Abstract
The main purpose of this work was to identify the role of soil humic acids (HAs) in controlling the behavior of Cu(II) in vineyard soils by exploring the relationship between the chemical and binding properties of HA fractions and those of soil as a whole. The study was conducted on soils with a sandy loam texture, pH 4.3-5.0, a carbon content of 12.4-41.0gkg(-1) and Cu concentrations from 11 to 666mgkg(-1). The metal complexing capacity of HA extracts obtained from the soils ranged from 0.69 to 1.02molkg(-1), and the stability constants for the metal ion-HA complexes formed, logK, from 5.07 to 5.36. Organic matter-quality related characteristics had little influence on Cu adsorption in acid soils, especially if compared with pH, the degree of Cu saturation and the amount of soil organic matter.
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Affiliation(s)
- D Fernández-Calviño
- Plant Biology and Soil Science Department, University of Vigo, Ourense Campus, 32004 Ourense, Spain.
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