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Bassi A, Piccini P, Filippeschi C, Oranges T, Giani T, Neri I, Cimaz R, Martino MD. Inflammatory morphea presenting as a hemifacial acquired port-wine stain. Arch Dis Child 2019; 104:296. [PMID: 29449213 DOI: 10.1136/archdischild-2017-314721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/30/2018] [Indexed: 11/04/2022]
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102
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Tersigni C, Filippeschi C, Buccoliero AM, Antiga E, Oranges T, De Martino M, Bassi A. A misdiagnosed vesicobullous recurrent eruption in a 7-year-old girl. GIORN ITAL DERMAT V 2019; 155:688-689. [PMID: 30648833 DOI: 10.23736/s0392-0488.18.06085-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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103
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Romano Armada N, Doccula FG, Candeo A, Valentini G, Costa A, Bassi A. In Vivo Light Sheet Fluorescence Microscopy of Calcium Oscillations in Arabidopsis thaliana. Methods Mol Biol 2019; 1925:87-101. [PMID: 30674019 DOI: 10.1007/978-1-4939-9018-4_8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Calcium imaging in plants requires a high-resolution microscope, able to perform volumetric acquisition in a few seconds, inducing as low photobleaching and phototoxicity as possible to the sample. Light sheet fluorescence microscopy offers these capabilities, with the further chance to mount the sample in vertical position, mimicking the plant's growth and physiological conditions.A protocol for plant preparation and mounting in a light sheet microscope is presented. First, the growth of Arabidopsis thaliana in a sample holder compatible with light sheet microscopy is described. Then, the requirements for sample alignment and image acquisition are detailed. Finally, the image processing steps to analyze calcium oscillations are discussed, with particular emphasis on ratiometric calcium imaging in Arabidopsis root hairs.
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104
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Sala F, Paiè P, Memeo R, Osellame R, Farina A, Bassi A, Bragheri F. Optofluidic lab-on-chips for high throughput 3D imaging of cells and tissues. EPJ WEB OF CONFERENCES 2019. [DOI: 10.1051/epjconf/201921511002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Optofludic lab-on-chips are compact microsystems that allow the manipulation, the analysis and the imaging of cells with high throughput even at the single cell level. The optofluidic microscopes on chip here presented are fabricated by femtosecond laser micromachining followed by chemical etching. The technique is ideally suited for rapid prototyping and allows 3D geometries and perfect alignment between microfluidic and optical components networks. The devices have been validated on cancer cell lines by imaging in three dimensions both clusters of cells growing on spheres and single cells.
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Paiè P, Martínez Vázquez R, Osellame R, Bragheri F, Bassi A. Microfluidic Based Optical Microscopes on Chip. Cytometry A 2018; 93:987-996. [PMID: 30211977 PMCID: PMC6220811 DOI: 10.1002/cyto.a.23589] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/23/2018] [Accepted: 07/25/2018] [Indexed: 12/21/2022]
Abstract
Last decade's advancements in optofluidics allowed obtaining an ever increasing integration of different functionalities in lab on chip devices to culture, analyze, and manipulate single cells and entire biological specimens. Despite the importance of optical imaging for biological sample monitoring in microfluidics, imaging is traditionally achieved by placing microfluidics channels in standard bench-top optical microscopes. Recently, the development of either integrated optical elements or lensless imaging methods allowed optical imaging techniques to be implemented in lab on chip systems, thus increasing their automation, compactness, and portability. In this review, we discuss known solutions to implement microscopes on chip that exploit different optical methods such as bright-field, phase contrast, holographic, and fluorescence microscopy.
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Piccini P, Venturini E, Bianchi L, Galli L, de Martino M, Bassi A. Bilateral Painful Erythematous Nodules on the Sole. J Pediatr 2018; 199:278. [PMID: 29730146 DOI: 10.1016/j.jpeds.2018.03.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 03/09/2018] [Indexed: 10/17/2022]
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107
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Venturini E, Galli L, Chiappini E, De Martino M, Bassi A. Gianotti-Crosti syndrome and atypical hand-foot-mouth disease: two distinct entities or two manifestation of the same infection? GIORN ITAL DERMAT V 2018; 155:114. [PMID: 29963801 DOI: 10.23736/s0392-0488.18.05948-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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108
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Bassi A, Coviello C, Martino MD, Cutrone M, Dani C. Aplasia cutis congenita and 'vanishing twin' caused by iatrogenic fetal reduction. Arch Dis Child Fetal Neonatal Ed 2018; 103:F270. [PMID: 29353258 DOI: 10.1136/archdischild-2017-314630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Revised: 01/02/2018] [Accepted: 01/02/2018] [Indexed: 11/03/2022]
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109
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Fornasari P, Cenacchi A, Fogli M, Bassi A, Poluzzi V. The Role of Hemapheresis in Autotransfusion. Int J Artif Organs 2018. [DOI: 10.1177/039139889802106s17] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Hemapheresis is a commonly used technique for single donor procedures of cell and/or plasma collection. In our blood center a new protocol was carried out to study the application of Hemonetics MCS3p to autotransfusion. PES and TAE protocols were applied: 40 patients for ‘each branch and 40 as controls completed the protocol. In the TAE protocol, 2 units of red cell concentrate were collected at day 0, in the PES protocol 300 ml of plasma were added, while in the control group 400 ml of whole blood were collected. Complete blood cell count, clotting parameters, and the EPO level were tested. The two protocols (TAE and PES) prove effective and safe: no significant change was shown for the clotting time and factors, other hematological and plasma values were controlled:; the endogenous EPO doubles its value 24-h after the procedure and the difference compared to controls is highly significant.
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110
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Borghi B, Bassi A, De Simone N, Laguardia A, Formaro G. Autotransfusion: 15 Years Experience at Rizzoli Orthopaedic Institute. Int J Artif Organs 2018. [DOI: 10.1177/039139889301605s54] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The program of blood saving, result of 15 years of experience, includes predeposit (1977) hemodilution (1979) intra (1984) and postoperative (1985) salvage, careful intra and postoperative bleeding control, use of homologous transfusion only in case of intolerated anaemia even for 7-8g/dl Hb values. The use of autologous compared to homologous transfusion passed from 19% in 1984 to 62% in 1992. In 1992 in the surgical division of the 1st Anaesthesia and Intensive Care unit, 414 patients underwent prosthetic hip and knee surgery, 8% of these patients were homologously transfused.
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111
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Bassi A, Borghi B, Brillante C, Mattioli R. Plasma Predeposit: The Role of Productive Plasmapheresis. Int J Artif Organs 2018. [DOI: 10.1177/039139889301605s56] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
At the Rizzoli Orthopaedic Institute, as part of our autotransfusion program, we have recently had the possibility to introduce plasma predeposit by means of productive plasmapheresis in patients undergoing major orthopaedic surgery, in which bleeding more than 50-60% of circulating blood mass was expected and so a greater quantity of plasma compared to red blood cells was considered necessary. Red cells and fresh frozen plasma predeposits and perioperative blood recovery was sufficient to cover transfusional needs. In our opinion, plasma predepositing by plasmapheresis is indicated in patients with anaemia, cardiopathy and/or vasculopathy, minute constitution.
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Abstract
To assess the causes of failure in a blood saving program and the consequent need for homologous transfusions during major orthopedic surgery, data were collected from six orthopedic centers where an autotransfusion program was carried out from 1992–1994. The 1,576 (1,016 female and 560 male) patients studied (average age 63.6 ± 10 years) were treated either for total hip prosthesis (1,144 pts) total knee prosthesis (212 pts), plate and screw removal plus hip prosthesis (8 pts), hip revision (cup 48 pts, stem 10 pts, cup plus stem 146 pts) and total knee revision (8 pts). Ninety percent of patients did not undergo homologous transfusions, which was significantly connected to: male sex (8% versus 11.7% p=0.02), younger age (63.2 vs 66.9 years, p=0.0001), higher weight (male 76 vs 70.7 Kg. p = 0.003, female 65.6 vs 61.9 Kg. p = 0.0003); higher baseline Hb (13.9 vs 12.8 gl dl, p = 0.0041), shorter operation time (110 vs 128 minutes, p = 0.0001); use of indobufen for antithromboembolic prophylaxis (indobufen 4.6% vs heparin calcium 15.2% vs low molecular weight heparin 9% p = 0.0001). On the contrary, the factors favoring homologous transfusions were: peripheral anesthesia (spinal and epidural 15.3% vs general 9.3% vs integrated 9.8% p = 0.016), total hip or knee revision, fixation device removal before hip prosthesis, systemic hypertension and coronary heart disease.
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113
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Borghi B, Bassi A, Grazia M, Gargioni G, Pignotti E. Anaesthesia and Autologous Transfusion. Int J Artif Organs 2018. [DOI: 10.1177/039139889501800308] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The anaesthesiologist plays a central role in co-ordinating the combined application of the various blood saving techniques. In fact, to carry out transfusion therapy correctly, the anaesthesiologist must plan the right number of units of predeposit blood during the first examination, estimate the salvage of intra and post operative blood loss and spread the infusion of the units over the first three days in order to keep the patient in a state of haemodilution. From January 1992 to June 1994 in the department of anaesthesia and the intensive care unit, 980 patients were treated for total joint replacement: 714 total hips (7 after removal of plates and screws) 145 revisions, and 121 total knee prostheses. Basal Hb was 13.4 ± 1.4 g/dl (range 6.7 – 17.9 g/dl). Homologous transfusions were carried out in 6.3% of these patients. The need to use homologous transfusions was negatively influenced by female sex, coronary heart disease (p = 0.005), length of surgery and type of antithromboembolic prophylaxis (indobufen has a significantly low incidence - p = 0.0001 - compared to calcium heparin or low molecular weight heparin).
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114
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Makovac E, Garfinkel S, Bassi A, Basile B, Macaluso E, Cercignani M, Calcagnini G, Mattei E, Mancini M, Agalliu D, Cortelli P, Caltagirone C, Critchley H, Bozzali M. Fear processing is differentially affected by lateralized stimulation of carotid baroreceptors. Cortex 2018; 99:200-212. [DOI: 10.1016/j.cortex.2017.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 03/21/2017] [Accepted: 07/05/2017] [Indexed: 10/19/2022]
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115
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Nwankwo EA, Wudiri WW, Bassi A. Practice Pattern of Hemodialysis Vascular Access in Maiduguri, Nigeria. Int J Artif Organs 2018; 29:956-60. [PMID: 17211817 DOI: 10.1177/039139880602901006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Despite available evidence based recommendations and guidelines there are differences in the preferred type of vascular access in use in different localities and geographical regions. This one center study on the practice pattern of vascular access was carried out in Maiduguri, Nigeria covering a period of the first 5 years of renal care in the area. Methods We analysed the dialysis and hospital records of consecutive patients that received hemodialysis in the renal center during the period between January 2000 and December 2004. Data comprised patients' demographics, vascular access used, complications encountered during the treatment period. Clinical and laboratory features of the patients were also recorded and analysed. Results The study involved one hundred and seventy-nine patients (M:F=2:1) who suffered kidney failure whose cause was clinically determined to be mainly due to chronic glomerulonephritis, hypertension, obstructive nephropathy and interstitial nephritis. Majority presented as late referrals to the nephrologist. Overall 9 % of the study population used AVFs while 91 % used catheters inserted into the femoral or internal jugular veins. Conclusion The use of catheters for vascular access was the practice in the majority of the patients and this is possibly related to the poor survival of the patients on hemodialysis. Socioeconomic circumstances of the patients in turn largely influenced the rate of AVF use.
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Bassi A, Zamma Gallarati B, Sardi I, Guidi M, Caporalini C, Pelosi P, de Martino M. Alveolar rhabdomyosarcoma in a 6-month-old boy. Arch Dis Child 2018; 103:95. [PMID: 28501810 DOI: 10.1136/archdischild-2016-312547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/11/2017] [Indexed: 11/04/2022]
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117
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Espinoza D, Córdova T, Diaz J, Bassi A, Vivaldi E, Ocampo-Garcés A. Envelope analysis of electromyogram in REM sleep behavior disorder patients. Sleep Med 2017. [DOI: 10.1016/j.sleep.2017.11.261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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118
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Coxa L, Bassi A, Kolling J, Procter A, Flanders N, Tanners N, Araujo R. Exploring synergies between transit investment and dense redevelopment: a scenario analysis in a rapidly urbanizing landscape. LANDSCAPE AND URBAN PLANNING 2017; 167:429-440. [PMID: 30034064 PMCID: PMC6052455 DOI: 10.1016/j.landurbplan.2017.07.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Like many urban areas around the world, Durham and Orange counties in North Carolina, USA are experiencing population growth and sprawl that is putting stress on the transportation system. Light rail and denser transit-oriented development are being considered as possible solutions. However, local agencies and stakeholders are concerned the light rail may worsen housing affordability and have questioned whether investment in both light rail and dense redevelopment are necessary to achieve community goals. We developed an integrated system dynamics model to quantitatively explore the outcomes of these land use and transportation options across multiple societal dimensions. The model incorporates feedbacks among the land, transportation, economic, equity, and energy sectors. This paper uses the results of four model scenarios, run between 2000 and 2040, to address two main questions: (1) what role does redevelopment play in capturing the socioeconomic benefits of transit infrastructure investment? And (2) how do redevelopment and light-rail transit interact to affect housing and transportation affordability? We find that transit investment and dense redevelopment combine synergistically to better achieve the goals of the light-rail line, including economic development, mobility, and compact growth. However, housing affordability does worsen in the combined scenario, as transportation-cost savings are not sufficient to offset the rise in housing costs. We emphasize that model users may input their own assumptions to explore the dynamics of alternative scenarios. We demonstrate how spatially-aggregated systems models can complement traditional land use and transportation models in the regional planning process.
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119
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Selinger CP, Parkes GC, Bassi A, Fogden E, Hayee B, Limdi JK, Ludlow H, McLaughlin S, Patel P, Smith M, Raine T. A multi-centre audit of excess steroid use in 1176 patients with inflammatory bowel disease. Aliment Pharmacol Ther 2017; 46:964-973. [PMID: 28949018 DOI: 10.1111/apt.14334] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/01/2017] [Accepted: 08/31/2017] [Indexed: 12/11/2022]
Abstract
BACKGROUND Corticosteroids are central to inducing remission in inflammatory bowel disease (IBD) but are ineffective maintenance agents. AIM To benchmark steroid usage in British outpatients and assess factors associated with excess exposure. METHODS We recorded steroid use in unselected IBD outpatients. Cases meeting criteria for steroid dependency or excess were blind peer reviewed to determine whether steroid prescriptions were avoidable. Associations between steroid use and patient/institutional factors were analysed. RESULTS Of 1176 patients, 30% received steroids in the prior 12 months. 14.9% had steroid dependency or excess, which was more common in moderate/severe ulcerative colitis (UC) than Crohn's disease (CD) (42.6% vs 28.1%; P = .027). Steroid dependency or excess was deemed avoidable in 49.1%. The annual incidence of inappropriate steroid excess was 7.1%. Mixed-effects logistic regression analysis revealed independent predictors of inappropriate steroid excess. The odds ratio (OR, 95%CI) for moderate/severe compared to mild/quiescent disease activity was 4.59 (1.53-20.64) for UC and 4.60 (2.21-12.00) for CD. In CD, lower rates of inappropriate steroid excess were found in centres with an IBD multi-disciplinary team (OR 0.62 [0.46-0.91]), whilst dedicated IBD clinics protected against inappropriate steroid excess in UC (OR 0.64, 95% CI 0.21-0.94). The total number of GI trainees was associated with rates of inappropriate steroid excess. CONCLUSIONS Steroid dependency or excess occurred in 14.9% of British IBD patients (in 7.1% potentially avoidable). We demonstrated positive effects of service configurations (IBD multi-disciplinary team, dedicated IBD clinics). Routine recording of steroid dependency or excess is feasible and should be considered a quality metric.
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120
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Vinante A, Mezzena R, Falferi P, Carlesso M, Bassi A. Improved Noninterferometric Test of Collapse Models Using Ultracold Cantilevers. PHYSICAL REVIEW LETTERS 2017; 119:110401. [PMID: 28949215 DOI: 10.1103/physrevlett.119.110401] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Indexed: 06/07/2023]
Abstract
Spontaneous collapse models predict that a weak force noise acts on any mechanical system, as a consequence of the collapse of the wave function. Significant upper limits on the collapse rate have been recently inferred from precision mechanical experiments, such as ultracold cantilevers and the space mission LISA Pathfinder. Here, we report new results from an experiment based on a high-Q cantilever cooled to millikelvin temperatures, which is potentially able to improve the current bounds on the continuous spontaneous localization (CSL) model by 1 order of magnitude. High accuracy measurements of the cantilever thermal fluctuations reveal a nonthermal force noise of unknown origin. This excess noise is compatible with the CSL heating predicted by Adler. Several physical mechanisms able to explain the observed noise have been ruled out.
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121
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Mori F, Fili L, Barni S, Sarti L, Montemaggi A, Bassi A, Filippeschi C, Galli L, Parronchi P, Novembre E. T-cell activation in two cases of Stevens-Johnson syndrome after receiving amoxicillin-clavulanic acid. Pediatr Allergy Immunol 2017; 28:602-606. [PMID: 28599076 DOI: 10.1111/pai.12741] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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122
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De Col V, Fuchs P, Nietzel T, Elsässer M, Voon CP, Candeo A, Seeliger I, Fricker MD, Grefen C, Møller IM, Bassi A, Lim BL, Zancani M, Meyer AJ, Costa A, Wagner S, Schwarzländer M. ATP sensing in living plant cells reveals tissue gradients and stress dynamics of energy physiology. eLife 2017; 6. [PMID: 28716182 PMCID: PMC5515573 DOI: 10.7554/elife.26770] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/28/2017] [Indexed: 12/13/2022] Open
Abstract
Growth and development of plants is ultimately driven by light energy captured through photosynthesis. ATP acts as universal cellular energy cofactor fuelling all life processes, including gene expression, metabolism, and transport. Despite a mechanistic understanding of ATP biochemistry, ATP dynamics in the living plant have been largely elusive. Here, we establish MgATP2- measurement in living plants using the fluorescent protein biosensor ATeam1.03-nD/nA. We generate Arabidopsis sensor lines and investigate the sensor in vitro under conditions appropriate for the plant cytosol. We establish an assay for ATP fluxes in isolated mitochondria, and demonstrate that the sensor responds rapidly and reliably to MgATP2- changes in planta. A MgATP2- map of the Arabidopsis seedling highlights different MgATP2- concentrations between tissues and within individual cell types, such as root hairs. Progression of hypoxia reveals substantial plasticity of ATP homeostasis in seedlings, demonstrating that ATP dynamics can be monitored in the living plant.
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123
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Farina A, Betcke M, di Sieno L, Bassi A, Ducros N, Pifferi A, Valentini G, Arridge S, D'Andrea C. Multiple-view diffuse optical tomography system based on time-domain compressive measurements. OPTICS LETTERS 2017; 42:2822-2825. [PMID: 28708178 DOI: 10.1364/ol.42.002822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Compressive sensing is a powerful tool to efficiently acquire and reconstruct an image even in diffuse optical tomography (DOT) applications. In this work, a time-resolved DOT system based on structured light illumination, compressive detection, and multiple view acquisition has been proposed and experimentally validated on a biological tissue-mimicking phantom. The experimental scheme is based on two digital micromirror devices for illumination and detection modulation, in combination with a time-resolved single element detector. We fully validated the method and demonstrated both the imaging and tomographic capabilities of the system, providing state-of-the-art reconstruction quality.
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124
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Candeo A, Doccula FG, Valentini G, Bassi A, Costa A. Light Sheet Fluorescence Microscopy Quantifies Calcium Oscillations in Root Hairs of Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2017; 58:1161-1172. [PMID: 28379562 PMCID: PMC6383626 DOI: 10.1093/pcp/pcx045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Calcium oscillations play a role in the regulation of the development of tip-growing plant cells. Using optical microscopy, calcium oscillations have been observed in a few systems (e.g. pollen tubes, fungal hyphae and algal rhizoids). High-resolution, non-phototoxic and rapid imaging methods are required to study the calcium oscillation in root hairs. We show that light sheet fluorescence microscopy is optimal to image growing root hairs of Arabidopsis thaliana and to follow their oscillatory tip-focused calcium gradient. We describe a protocol for performing live imaging of root hairs in seedlings expressing the cytosol-localized ratiometric calcium indicator Yellow Cameleon 3.6. Using this protocol, we measured the calcium gradient in a large number of root hairs. We characterized their calcium oscillations and correlated them with the rate of hair growth. The method was then used to screen the effect of auxin on the properties of the growing root hairs.
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125
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Vitale G, Gaudenzi G, Circelli L, Manzoni MF, Bassi A, Fioritti N, Faggiano A, Colao A. Animal models of medullary thyroid cancer: state of the art and view to the future. Endocr Relat Cancer 2017; 24:R1-R12. [PMID: 27799362 DOI: 10.1530/erc-16-0399] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 10/24/2016] [Indexed: 12/16/2022]
Abstract
Medullary thyroid carcinoma is a neuroendocrine tumour originating from parafollicular C cells accounting for 5-10% of thyroid cancers. Increased understanding of disease-specific molecular targets of therapy has led to the regulatory approval of two drugs (vandetanib and cabozantinib) for the treatment of medullary thyroid carcinoma. These drugs increase progression-free survival; however, they are often poorly tolerated and most treatment responses are transient. Animal models are indispensable tools for investigating the pathogenesis, mechanisms for tumour invasion and metastasis and new therapeutic approaches for cancer. Unfortunately, only few models are available for medullary thyroid carcinoma. This review provides an overview of the state of the art of animal models in medullary thyroid carcinoma and highlights future developments in this field, with the aim of addressing salient features and clinical relevance.
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