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Cekani E, Martorell C, Martucci F, Patella M, Cafarotti S, Valenti A, Freguia S, Molinari F, Froesch P, Frattini M, Stathis A, Wannesson L. Prognostic implication of PD-L1 in early-stage non-small cell lung cancer: a retrospective single-centre study. Swiss Med Wkly 2023; 153:40110. [PMID: 37769653 DOI: 10.57187/smw.2023.40110] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Abstract
BACKGROUND The prognostic role of programmed death-ligand 1 (PD-L1) expression in patients with localised and locally advanced non-small cell lung cancer has not been fully elucidated. This information could help to better interpret recent and upcoming results of phase III adjuvant or neoadjuvant anti-PD-1/PD-L1 immunotherapy studies. METHODS In a cohort of 146 patients with early or locally advanced non-small cell lung cancer treated with curative intent (by surgery or radiotherapy), we investigated the prognostic value of PD-L1 expression and its correlation with other biological and clinical features. PD-L1 expression was stratified by quartiles. Primary endpoints were overall and disease-free survival. We also analysed the prognostic impact of the presence of actionable mutations, implemented treatment modality and completion of the treatment plan. Neither type of patient received neoadjuvant or adjuvant immunotherapy or target therapy. RESULTS Of the 146 selected patients, 32 (21.9%) presented disease progression and 15 died (10.3%) at a median follow-up of 20 months. In a univariable analysis, PD-L1 expression ≥25% was associated with significantly lower disease-free survival (hazard ratio [HR]) 1.9, 95% confidence interval [CI] 1.0-3.9, p = 0.049). PD-L1 expression ≥50% did not lead to disease-free survival or overall survival benefits (HR 1.2 and 1.1, respectively; 95% CI 0.6-2.6 and 0.3-3.4, respectively; pnot significant). In a multivariate analysis, a stage >I (HR 2.7, 95% CI 1.2-6, p = 0.012) and having an inoperable tumour (HR 3.2, 95% CI 1.4-7.4, p = 0.005) were associated with lower disease-free survival. CONCLUSION The population of patients with early-stage non-small cell lung cancer and PD-L1 expression ≥25% who were treated with curative intent during the pre-immunotherapy era exhibited a worse prognosis. This finding provides justification for the utilisation of adjuvant immunotherapy in this subgroup of patients, based on the current evidence derived from disease-free survival outcomes. However, for patients with PD-L1 expression <25%, opting to wait for the availability of the overall survival results may be a prudent choice.
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Affiliation(s)
- Elona Cekani
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Carolina Martorell
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Francesco Martucci
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Miriam Patella
- Thoracic Surgery Department, Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Stefano Cafarotti
- Thoracic Surgery Department, Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Antonio Valenti
- Pneumology Department, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland
| | | | | | - Patrizia Froesch
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | | | - Anastasios Stathis
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
| | - Luciano Wannesson
- Istituto Oncologico della Svizzera Italiana (IOSI), Ente Ospedaliero Cantonale (EOC), Bellinzona, Switzerland
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Freguia S, Sharma K, Benichou O, Mulliss M, Shon HK. Sustainable engineering of sewers and sewage treatment plants for scenarios with urine diversion. J Hazard Mater 2021; 415:125609. [PMID: 33721777 DOI: 10.1016/j.jhazmat.2021.125609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 10/07/2020] [Revised: 02/17/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Urine diversion (UD) has been studied for decades as a way to enable distributed sanitation and to recycle nutrients onto land to fuel circular economies. No study to date has attempted a quantitative technical and economic analysis of the downstream effects of UD on sewage transport and treatment. This work used the SeweX model to reveal for the first time that through UD, hydrogen sulfide concentration in sewer headspaces can be reduced, and consequently sewer corrosion can be reduced. For a long rising main of 5 km, sewer headspace H2S can be reduced from 280 ppm to 200 ppm by diverting 75% of the urine. The same scenario enables the reduction of sewer corrosion from 12 to 10 mm/yr. Modeling sewage treatment plants with BioWin showed that sewage treatment responds to UD with a sharp reduction of the anoxic volume and a decrease of energy requirement by up to 50% at 75% UD. An upgrade of bioreactors to increase capacity by 20% can be completely avoided if 7% of the catchment's urine is diverted. Reductions in upgrade expenditure by up to 75% can provide the economic incentive for the uptake of UD.
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Affiliation(s)
- S Freguia
- Department of Chemical Engineering, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - K Sharma
- Advanced Water Management Centre, The University of Queensland, QLD 4072, Australia
| | - O Benichou
- Jacobs Engineering, Level 7, 32 Cordelia Street, South Brisbane, QLD 4101, Australia
| | - M Mulliss
- Urban Utilities, Level 2, 15 Green Square Close, Fortitude Valley, 4006 QLD, Australia
| | - H K Shon
- School of Civil and Environmental Engineering, University of Technology, Sydney (UTS), City Campus, Broadway, NSW 2007, Australia
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Tessitore A, Patella M, Giuliani M, Theologou T, Freguia S, Minerva EM, Rugel G, Cafarotti S. Surgical treatment of pleural empyema in Coronavirus disease 19 patients: the Southern Switzerland experience. Interact Cardiovasc Thorac Surg 2021; 32:367-370. [PMID: 33221888 PMCID: PMC7717251 DOI: 10.1093/icvts/ivaa269] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 12/13/2022] Open
Abstract
We report the first surgical series of patients developing pleural empyema after severe bilateral interstitial lung disease in confirmed severe acute respiratory syndrome coronavirus 2 infection. The empyema results in a complex medical challenge that requires combination of medical therapies, mechanical ventilation and surgery. The chest drainage approach was not successful to relieve the symptomatology and to drain the excess fluid. After multidisciplinary discussion, a surgical approach was recommended. Even though decortication and pleurectomy are high-risk procedures, they must be considered as an option for pleural effusion in Coronavirus disease-positive patients. This is a life-treating condition, which can worsen the coronavirus disease manifestation and should be treated immediately to improve patient’s status and chance of recovery.
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Affiliation(s)
- Adele Tessitore
- Department of Thoracic Surgery, San Giovanni Hospital, Ente ospedaliero cantonale Bellinzona, Bellinzona, Switzerland
| | - Miriam Patella
- Department of Thoracic Surgery, San Giovanni Hospital, Ente ospedaliero cantonale Bellinzona, Bellinzona, Switzerland
| | - Mauro Giuliani
- Division of General Surgery, Ospedale Regionale di Locarno, Locarno, Switzerland
| | - Thomas Theologou
- Department of Cardiac Surgery, Cardiocentro Ticino, Lugano, Switzerland
| | - Stefania Freguia
- Clinical Cytopathology Service, Histopathology Service, Locarno, Switzerland
| | | | - Gregor Rugel
- Department of Thoracic Surgery, San Giovanni Hospital, Ente ospedaliero cantonale Bellinzona, Bellinzona, Switzerland
| | - Stefano Cafarotti
- Department of Thoracic Surgery, San Giovanni Hospital, Ente ospedaliero cantonale Bellinzona, Bellinzona, Switzerland
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Barizzi J, Freguia S, Sarro R, Venzi G, Fulciniti F. Prostatic Ductal Adenocarcinoma with Papillary Features in a Bladder Washing: A Possible Pitfall in Urinary Cytology - Report of One Case. Acta Cytol 2020; 64:607-611. [PMID: 32498072 DOI: 10.1159/000508017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 04/17/2020] [Indexed: 11/19/2022]
Abstract
In this article, we report on a case of combined, acinar and ductal prostatic adenocarcinoma affecting the prostatic urethra, which, due to a low degree of cytologic atypia and an exclusive papillary architecture with visible fibrovascular core, was erroneously diagnosed as a low-grade urothelial carcinoma based on its peculiar cytologic presentation in a bladder washing sample.
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Affiliation(s)
- Jessica Barizzi
- Clinical Cytopathology Service, Histopathology Service, Istituto Cantonale di Patologia, Locarno, Switzerland
| | - Stefania Freguia
- Clinical Cytopathology Service, Histopathology Service, Istituto Cantonale di Patologia, Locarno, Switzerland
| | - Rossella Sarro
- Clinical Cytopathology Service, Histopathology Service, Istituto Cantonale di Patologia, Locarno, Switzerland
| | - Giordano Venzi
- Urology Department, Ospedale civico di Lugano, Lugano, Switzerland
| | - Franco Fulciniti
- Clinical Cytopathology Service, Histopathology Service, Istituto Cantonale di Patologia, Locarno, Switzerland,
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De Dosso S, Nucifora M, Sahnane N, Epistolio S, Riveiro ME, Bertolini V, Bucci E, Boldorini R, Freguia S, Frattini M, Saletti P. Influence of KRAS mutations on clinical outcome in patients with curatively resected stage III colon cancer treated with adjuvant chemotherapy. Eur Rev Med Pharmacol Sci 2020; 24:2994-3003. [PMID: 32271417 DOI: 10.26355/eurrev_202003_20664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To profile and correlate KRAS mutations with outcome in stage III colon cancer (CC) patients who underwent adjuvant chemotherapy following curative resection surgery. PATIENTS AND METHODS In this retrospective study, eligible patients were those with resected stage III CC who underwent 6-months adjuvant chemotherapy, either with fluoropyrimidine monotherapy (FP) or with oxaliplatin-based regimens (O-FP). Disease-free survival (DFS) and overall survival (OS) were analyzed and computed using the Kaplan-Meier method and the log-rank test. RESULTS The study population included 148 patients (n=65 FP and n=83 O-FP). We identified KRAS mutations in 41/148 (27%) patients, of which 18 (44%) received FP and 23 (56%) O-FP. Five-year DFS and OS were significantly higher in patients with KRAS wild-type vs. mutant [DFS: 78 vs. 56%, HR: 0.47 (95% CI: 0.25; 0.87), p=0.01; OS: 73 vs. 68%, HR: 0.44 (95% CI: 0.21; 0.88), p=0.01]. In patients treated with FP, the 5-year DFS and OS was significantly improved in the KRAS wild-type vs. mutant group, respectively [DFS: 80 vs. 43%, HR: 2.88 (95% CI: 0.67; 3.76), p=0.014; OS: 85 vs. 68%, HR: 0.27 (95% CI: 0.10; 0.73), p=0.005]. Conversely, 5-year DFS and OS were not statistically different for patients with KRAS wild-type vs. mutations treated with O-FP, respectively [DFS: 78 vs. 65%, HR: 1.59 (95% CI: 0.67; 3.76), p=0.281; OS: 80 vs. 75%, HR: 0.73 (95% CI: 0.55; 2.12), p=0.57)]. CONCLUSIONS Our results suggest that curatively resected stage III CC patients exhibiting wild-type KRAS status might benefit from FP alone. Conversely, an oxaliplatin-containing regimen should be recommended in KRAS mutated patients.
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Affiliation(s)
- S De Dosso
- Oncology Institute of Southern Switzerland, Bellinzona, Switzerland.
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Sander EM, Virdis B, Freguia S. Bioelectrochemical nitrogen removal as a polishing mechanism for domestic wastewater treated effluents. Water Sci Technol 2017; 76:3150-3159. [PMID: 29210701 DOI: 10.2166/wst.2017.462] [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: 06/07/2023]
Abstract
Addition of an external carbon source is usually necessary to guarantee a sufficiently high C/N ratio and enable denitrification in wastewater treatment plants (WWTPs). Alternatively, denitrification processes using autotrophic microorganisms have been proposed i.e., with the use of H2 as electron donor or with the use of cathodic denitrification in bioelectrochemical systems (BES), in which electrons are transferred directly to a denitrifying biofilm. The aim of this work was to investigate and demonstrate the feasibility of applying an easy-to-operate BES as a polishing mechanism for treated secondary clarified effluent from a municipal WWTP, containing low levels of organic matter, buffer capacity and low concentrations of remaining nitrate. In the proposed system, nitrogen removal rates (0.018-0.121 Kg N m-3 d-1) increased with the nitrogen loading rates, suggesting that biofilm kinetics were not rate limiting. The lowest energy consumption for denitrification was 12.7 kWh Kg N-1, equivalent to 0.021 kWh m-3 and could be further reduced by 14% by adding recirculation circuits within both the anode and cathode.
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Affiliation(s)
- E M Sander
- Advanced Water Management Centre, The University of Queensland, Level 4, Gehrmann Laboratories Building (60), Brisbane, QLD 4072, Australia E-mail:
| | - B Virdis
- Advanced Water Management Centre, The University of Queensland, Level 4, Gehrmann Laboratories Building (60), Brisbane, QLD 4072, Australia E-mail:
| | - S Freguia
- Advanced Water Management Centre, The University of Queensland, Level 4, Gehrmann Laboratories Building (60), Brisbane, QLD 4072, Australia E-mail:
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Forcella M, Oldani M, Epistolio S, Freguia S, Monti E, Fusi P, Frattini M. Non-small cell lung cancer (NSCLC), EGFR downstream pathway activation and TKI targeted therapies sensitivity: Effect of the plasma membrane-associated NEU3. PLoS One 2017; 12:e0187289. [PMID: 29088281 PMCID: PMC5663482 DOI: 10.1371/journal.pone.0187289] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Accepted: 10/17/2017] [Indexed: 11/30/2022] Open
Abstract
Adenocarcinoma of Non-Small Cell Lung Cancer (NSCLC) is a severe disease. Patients carrying EGFR mutations may benefit from EGFR targeted therapies (e.g.: gefitinib). Recently, it has been shown that sialidase NEU3 directly interacts and regulates EGFR. In this work, we investigate the effect of sialidase NEU3 overexpression on EGFR pathways activation and EGFR targeted therapies sensitivity, in a series of lung cancer cell lines. NEU3 overexpression, forced after transfection, does not affect NSCLC cell viability. We demonstrate that NEU3 overexpression stimulates the ERK pathway but this activation is completely abolished by gefitinib treatment. The Akt pathway is also hyper-activated upon NEU3 overexpression, but gefitinib is able only to decrease, and not to abolish, such activation. These findings indicate that NEU3 can act directly on the ERK pathway through EGFR and both directly and indirectly with respect to EGFR on the Akt pathway. Furthermore, we provide evidence that a healthy mucosa cell line (with EGFR wild-type gene sequence) is slightly sensitive to gefitinib, especially in the presence of NEU3 overexpression, thus hypothesizing that NEU3 overexpressing patients may benefit from EGFR targeted therapies also in absence of EGFR point mutations. Overall, the expression of NEU3 may be a novel diagnostic marker in NSCLC because, by its ability to stimulate EGFR downstream pathways with direct and indirect mechanisms, it may help in the identification of patients who can profit from EGFR targeted therapies in absence of EGFR activating mutations or from new combinations of EGFR and Akt inhibitors.
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Affiliation(s)
- Matilde Forcella
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Monica Oldani
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Samantha Epistolio
- Laboratory of Molecular Pathology, Institute of Pathology, Locarno, Switzerland
| | - Stefania Freguia
- Laboratory of Molecular Pathology, Institute of Pathology, Locarno, Switzerland
| | - Eugenio Monti
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
- * E-mail: (EM); (MF)
| | - Paola Fusi
- Department of Biotechnologies and Biosciences, University of Milano-Bicocca, Milano, Italy
| | - Milo Frattini
- Laboratory of Molecular Pathology, Institute of Pathology, Locarno, Switzerland
- * E-mail: (EM); (MF)
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Siano M, Molinari F, Martin V, Mach N, Früh M, Freguia S, Corradino I, Ghielmini M, Frattini M, Espeli V. Multicenter Phase II Study of Panitumumab in Platinum Pretreated, Advanced Head and Neck Squamous Cell Cancer. Oncologist 2017; 22:782-e70. [PMID: 28592616 PMCID: PMC5507653 DOI: 10.1634/theoncologist.2017-0069] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 04/04/2017] [Indexed: 11/20/2022] Open
Abstract
Lessons Learned. Panitumumab shows activity in terms of disease control rate and preventing disease progression but not for tumor shrinkage in head and neck squamous cell cancer for second‐line treatment. Epidermal growth factor receptor (EGFR) copy number gain, a property of tumor cells that theoretically could identify patients more likely to experience disease response, was common among patients having disease control. Our trial, given the lower toxicity with an every‐2‐week schedule, provides guidance for future trials, for example, in combinations of immune therapies and anti‐EGFR‐antibodies.
Background. The objective of this study was to investigate the efficacy and safety of panitumumab (anti‐epidermal growth factor receptor [EGFR] antibody) given as a single agent in platinum‐pretreated head and neck squamous cell cancer (HNSCC). Methods. Patients with advanced HNSCC previously treated with platinum‐containing therapy were included. Panitumumab was administered intravenously every 2 weeks at a dose of 6 mg/kg. Primary endpoint was overall response rate (ORR) according to Response Evaluation Criteria In Solid Tumors (RECIST) version 1.1; secondary endpoints were progression‐free survival (PFS) and safety. A Simon's two‐step design was chosen; 4 partial remissions (PR) in the first 32 patients were required for continuing to step two. An exploratory biomarker analysis was performed. Results. Thirty‐three patients were enrolled. Two patients obtained a PR for an ORR of 6%, and 15 (45%) showed stable disease (SD) for at least 2 months, resulting in a 51% disease control rate. Median PFS was 2.6 months (95% confidence interval [CI]: 1.7–3.7), while median OS was 9.7 months (95% CI: 6.3–17.2). The most frequent adverse drug reactions were cutaneous rash (64%) and hypomagnesemia (55%). Overall, 30% of patients experienced grade 3/4 adverse events. No infusion‐related reactions occurred. EGFR copy number gain (CNG) was more frequent in patients who benefitted from panitumumab. Two uncommon KRAS mutations (G48E, T50I) and 3 canonical PIK3CA mutations (all E545K) were detected. High‐risk HPV16 was found in 10 patients and EGFR CNG in 13 treated patients. EGFR CNG seems to be more frequent in individuals with at least SD compared with patients with progressive disease (59% vs. 30%). PFS for patients with EGFR CNG was 4.6 months (95% CI: 1.0–9.2 months) and 1.9 months (95% CI: 1.0–3.2 months) for patients without CNG (p = .02). Conclusion. Panitumumab monotherapy in pretreated HNSCC patients was well tolerated but moderately active. We observed a considerable disease control rate. Future strategies with this agent comprise right patient selection through the identification of reliable biomarkers and gene signatures predicting response and, considering good tolerability and convenience, combination strategies with novel agents and immune therapeutic agents.
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Affiliation(s)
- Marco Siano
- Department of Medical Oncology and Hematology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Francesca Molinari
- Institute of Pathology, Laboratory of Molecular Pathology, Locarno, Switzerland
| | - Vittoria Martin
- Institute of Pathology, Laboratory of Molecular Pathology, Locarno, Switzerland
| | - Nicolas Mach
- Clinical Research Unit of the Dr. Henri Dubois-Ferrière, University Hospital, Geneva, Switzerland
| | - Martin Früh
- Department of Medical Oncology and Hematology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Stefania Freguia
- Institute of Pathology, Laboratory of Molecular Pathology, Locarno, Switzerland
| | - Irene Corradino
- Clinical Trial Unit, Ente Ospedaliero Cantonale, Bellinzona, Switzerland
| | - Michele Ghielmini
- Oncology Institute of Southern Switzerland, San Giovanni Hospital, Bellinzona, Switzerland
| | - Milo Frattini
- Institute of Pathology, Laboratory of Molecular Pathology, Locarno, Switzerland
| | - Vittoria Espeli
- Oncology Institute of Southern Switzerland, San Giovanni Hospital, Bellinzona, Switzerland
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Xie S, O'Dwyer T, Freguia S, Pikaar I, Clarke WP. Effect of biomass concentration on methane oxidation activity using mature compost and graphite granules as substrata. Waste Manag 2016; 56:290-297. [PMID: 27515185 DOI: 10.1016/j.wasman.2016.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 08/04/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Reported methane oxidation activity (MOA) varies widely for common landfill cover materials. Variation is expected due to differences in surface area, the composition of the substratum and culturing conditions. MOA per methanotrophic cell has been calculated in the study of natural systems such as lake sediments to examine the inherent conditions for methanotrophic activity. In this study, biomass normalised MOA (i.e., MOA per methanotophic cell) was measured on stabilised compost, a commonly used cover in landfills, and on graphite granules, an inert substratum widely used in microbial electrosynthesis studies. After initially enriching methanotrophs on both substrata, biomass normalised MOA was quantified under excess oxygen and limiting methane conditions in 160ml serum vials on both substrata and blends of the substrata. Biomass concentration was measured using the bicinchoninic acid assay for microbial protein. The biomass normalised MOA was consistent across all compost-to-graphite granules blends, but varied with time, reflecting the growth phase of the microorganisms. The biomass normalised MOA ranged from 0.069±0.006μmol CH4/mg dry biomass/h during active growth, to 0.024±0.001μmol CH4/mg dry biomass/h for established biofilms regardless of the substrata employed, indicating the substrata were equally effective in terms of inherent composition. The correlation of MOA with biomass is consistent with studies on methanotrophic activity in natural systems, but biomass normalised MOA varies by over 5 orders of magnitude between studies. This is partially due to different methods being used to quantify biomass, such as pmoA gene quantification and the culture dependent Most Probable Number method, but also indicates that long term exposure of materials to a supply of methane in an aerobic environment, as can occur in natural systems, leads to the enrichment and adaptation of types suitable for those conditions.
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Affiliation(s)
- S Xie
- Centre for Solid Waste Bioprocessing, Schools of Civil and Chemical Engineering, The University of Queensland, Brisbane 4072, Australia
| | - T O'Dwyer
- Centre for Solid Waste Bioprocessing, Schools of Civil and Chemical Engineering, The University of Queensland, Brisbane 4072, Australia
| | - S Freguia
- Advanced Water Management Centre, The University of Queensland, Brisbane 4072, Australia
| | - I Pikaar
- Centre for Solid Waste Bioprocessing, Schools of Civil and Chemical Engineering, The University of Queensland, Brisbane 4072, Australia
| | - W P Clarke
- Centre for Solid Waste Bioprocessing, Schools of Civil and Chemical Engineering, The University of Queensland, Brisbane 4072, Australia.
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Karligkiotis A, Turri-Zanoni M, Sica E, Facco C, Freguia S, Mercuri A, Pistochini A, Bignami M, Castelnuovo P. Role of endoscopic surgery in the management of sinonasal and skull base schwannomas. Head Neck 2016; 38 Suppl 1:E2074-82. [PMID: 26876981 DOI: 10.1002/hed.24383] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/04/2015] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND The purpose of this study was to report our experience with the endoscopic management of sinonasal schwannomas, analyzing the advantages, limitations, and outcomes of the technique. METHODS A retrospective analysis was carried out on 11 patients treated endoscopically between 2000 and 2014 at a single institution. RESULTS Eight patients underwent an exclusive endoscopic endonasal approach, whereas, in 3 patients, an osteoplastic flap was combined because of massive or lateral frontal sinus involvement. The tumor extended into the orbit in 5 cases, and involved the skull base in 5 patients who required a concomitant endoscopic duraplasty. No evidence of disease was observed in 10 patients after a mean follow-up of 90.1 months (range, 14-189 months). One patient was alive with persistence of disease, although asymptomatic. CONCLUSION The endoscopic endonasal approach is a valid alternative for the vast majority of sinonasal schwannomas with minimal morbidity for the patient. © 2016 Wiley Periodicals, Inc. Head Neck 38: E2074-E2082, 2016.
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Affiliation(s)
- Apostolos Karligkiotis
- Division of Otorhinolaryngology, Department of Surgical, Microsurgical and Medical Sciences, University of Sassari, Sassari, Italy.,Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,Head and Neck Surgery and Forensic Dissection Research Center (HNS & FDRC), Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Mario Turri-Zanoni
- Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,Head and Neck Surgery and Forensic Dissection Research Center (HNS & FDRC), Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Eleonora Sica
- Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Carla Facco
- Division of Pathology, Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Stefania Freguia
- Division of Pathology, Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Anna Mercuri
- Department of Neuroradiology, Ospedale di Circolo e Fondazione Macchi, Varese, Italy
| | - Andrea Pistochini
- Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Maurizio Bignami
- Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,Head and Neck Surgery and Forensic Dissection Research Center (HNS & FDRC), Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Paolo Castelnuovo
- Division of Otorhinolaryngology, Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy.,Head and Neck Surgery and Forensic Dissection Research Center (HNS & FDRC), Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
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Antognoni P, Turri-Zanoni M, Gottardo S, Molteni M, Volpi L, Facco C, Freguia S, Mordacchini C, AlQahtani A, Bignami M, Capella C, Castelnuovo P. Endoscopic resection followed by adjuvant radiotherapy for sinonasal intestinal-type adenocarcinoma: Retrospective analysis of 30 consecutive patients. Head Neck 2014; 37:677-84. [DOI: 10.1002/hed.23660] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Revised: 11/25/2013] [Accepted: 03/01/2014] [Indexed: 11/10/2022] Open
Affiliation(s)
- Paolo Antognoni
- Department of Radiotherapy; Ospedale di Circolo e Fondazione Macchi; Varese Italy
| | - Mario Turri-Zanoni
- Department of Otorhinolaryngology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Stefania Gottardo
- Department of Radiotherapy; Ospedale di Circolo e Fondazione Macchi; Varese Italy
| | - Marinella Molteni
- Department of Radiotherapy; Ospedale di Circolo e Fondazione Macchi; Varese Italy
| | - Luca Volpi
- Department of Otorhinolaryngology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Carla Facco
- Department of Pathology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Stefania Freguia
- Department of Pathology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Cinzia Mordacchini
- Department of Medical Physics, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Abdulaziz AlQahtani
- Department of Otorhinolaryngology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Maurizio Bignami
- Department of Otorhinolaryngology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Carlo Capella
- Department of Pathology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
| | - Paolo Castelnuovo
- Department of Otorhinolaryngology, Ospedale di Circolo e Fondazione Macchi; University of Insubria; Varese Italy
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Mejia Likosova E, Keller J, Poussade Y, Freguia S. A novel electrochemical process for the recovery and recycling of ferric chloride from precipitation sludge. Water Res 2014; 51:96-103. [PMID: 24397913 DOI: 10.1016/j.watres.2013.12.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [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: 11/18/2013] [Revised: 12/13/2013] [Accepted: 12/16/2013] [Indexed: 06/03/2023]
Abstract
During wastewater treatment and drinking water production, significant amounts of ferric sludge (comprising ferric oxy-hydroxides and FePO4) are generated that require disposal. This practice has a major impact on the overall treatment cost as a result of both chemical addition and the disposal of the generated chemical sludge. Iron sulfide (FeS) precipitation via sulfide addition to ferric phosphate (FePO4) sludge has been proven as an effective process for phosphate recovery. In turn, iron and sulfide could potentially be recovered from the FeS sludge, and recycled back to the process. In this work, a novel process was investigated at lab scale for the recovery of soluble iron and sulfide from FeS sludge. Soluble iron is regenerated electrochemically at a graphite anode, while sulfide is recovered at the cathode of the same electrochemical cell. Up to 60 ± 18% soluble Fe and 46 ± 11% sulfide were recovered on graphite granules for up-stream reuse. Peak current densities of 9.5 ± 4.2 A m(-2) and minimum power requirements of 2.4 ± 0.5 kWh kg Fe(-1) were reached with real full strength FeS suspensions. Multiple consecutive runs of the electrochemical process were performed, leading to the successful demonstration of an integrated process, comprising FeS formation/separation and ferric/sulfide electrochemical regeneration.
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Affiliation(s)
- E Mejia Likosova
- The University of Queensland, Advanced Water Management Centre (AWMC), St Lucia, QLD 4072, Australia.
| | - J Keller
- The University of Queensland, Advanced Water Management Centre (AWMC), St Lucia, QLD 4072, Australia
| | - Y Poussade
- Veolia Water Australia, Level 15, 127 Creek Street, Brisbane, QLD, Australia
| | - S Freguia
- The University of Queensland, Advanced Water Management Centre (AWMC), St Lucia, QLD 4072, Australia
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13
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Magnoli F, Freguia S, Bernasconi B, Campiotti L, Oldrini R, Facco C, Sessa F, Uccella S. Fatal splenic rupture in a previously undiagnosed multiple myeloma: morphological, immunophenotypical and molecular cytogenetic analyses. Clin Lymphoma Myeloma Leuk 2013; 13:e22-5. [PMID: 24034870 DOI: 10.1016/j.clml.2013.05.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/09/2013] [Accepted: 05/23/2013] [Indexed: 11/19/2022]
Affiliation(s)
- Francesca Magnoli
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
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14
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Mejia Likosova E, Keller J, Rozendal R, Poussade Y, Freguia S. Understanding colloidal FeSx formation from iron phosphate precipitation sludge for optimal phosphorus recovery. J Colloid Interface Sci 2013; 403:16-21. [DOI: 10.1016/j.jcis.2013.04.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 03/19/2013] [Accepted: 04/03/2013] [Indexed: 11/26/2022]
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15
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Aelterman P, Freguia S, Keller J, Rabaey K, Verstraete W. The anode potential regulates the bacterial activity in microbial fuel cells. Commun Agric Appl Biol Sci 2008; 73:85-89. [PMID: 18831250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- P Aelterman
- Laboratory for Microbial Ecology and Technology, Ghent University Coupure Links 653, BE-9000 Gent, Belgium
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