1
|
Mirzoyan Z, Valenza A, Zola S, Bonfanti C, Arnaboldi L, Ferrari N, Pollard J, Lupi V, Cassinelli M, Frattaroli M, Sahin M, Pasini ME, Bellosta P. A Drosophila model targets Eiger/TNFα to alleviate obesity-related insulin resistance and macrophage infiltration. Dis Model Mech 2023; 16:dmm050388. [PMID: 37828911 PMCID: PMC10651092 DOI: 10.1242/dmm.050388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 10/05/2023] [Indexed: 10/14/2023] Open
Abstract
Obesity is associated with various metabolic disorders, such as insulin resistance and adipose tissue inflammation (ATM), characterized by macrophage infiltration into adipose cells. This study presents a new Drosophila model to investigate the mechanisms underlying these obesity-related pathologies. We employed genetic manipulation to reduce ecdysone levels to prolong the larval stage. These animals are hyperphagic and exhibit features resembling obesity in mammals, including increased lipid storage, adipocyte hypertrophy and high circulating glucose levels. Moreover, we observed significant infiltration of immune cells (hemocytes) into the fat bodies, accompanied by insulin resistance. We found that attenuation of Eiger/TNFα signaling reduced ATM and improved insulin sensitivity. Furthermore, using metformin and the antioxidants anthocyanins, we ameliorated both phenotypes. Our data highlight evolutionarily conserved mechanisms allowing the development of Drosophila models for discovering therapeutic pathways in adipose tissue immune cell infiltration and insulin resistance. Our model can also provide a platform to perform genetic screens or test the efficacy of therapeutic interventions for diseases such as obesity, type 2 diabetes and non-alcoholic fatty liver disease.
Collapse
Affiliation(s)
- Zhasmine Mirzoyan
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - Alice Valenza
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Sheri Zola
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - Carola Bonfanti
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | | | - Nicholas Ferrari
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
| | - John Pollard
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | - Valeria Lupi
- Department of Biosciences, University of Milan, 20133 Milan, Italy
| | | | | | - Mehtap Sahin
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
- Department of Biology, University of Ankara, 06110 Ankara, Turkey
| | | | - Paola Bellosta
- Department of Computational, Cellular and Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy
- Department of Medicine, NYU Langone Medical Center, 10016 New York, USA
| |
Collapse
|
2
|
Loi M, Bonucci I, Masi L, Doro R, Francolini G, Di Cataldo V, Bonomo P, Visani L, Tempobono M, Bellosi N, Pazzaglini S, Cassinelli M, Simontacchi G, Greto D, Desideri I, Lucidi S, Aquilano M, Livi L. PO-1469 CT-Guided Fiducial Placement for Robotic Stereotactic Body Radiotherapy: Efficacy and Safety. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03433-8] [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]
|
3
|
Masi L, Doro R, Hernandez V, Saez J, Bellosi N, Cassinelli M, Pazzaglini S, Tempobono M, Livi L. Modulation complexity metrics for Robotic MLC plans: predictors of quality assurance results? Phys Med 2021. [DOI: 10.1016/s1120-1797(22)00116-8] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
4
|
Zani M, Calusi S, Doro R, Bellosi N, Cassinelli M, Pazzaglini S, Tempobono M, Masi L. 11. Sensitivity of patient specific quality assurance to simulated delivery errors for CyberKnife MLC treatments and effects on DVH. Phys Med 2018. [DOI: 10.1016/j.ejmp.2018.04.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
5
|
Cassinelli M, Müller S, Voss KO, Trautmann C, Völklein F, Gooth J, Nielsch K, Toimil-Molares ME. Influence of surface states and size effects on the Seebeck coefficient and electrical resistance of Bi 1-xSb x nanowire arrays. Nanoscale 2017; 9:3169-3179. [PMID: 28221383 DOI: 10.1039/c6nr09624g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The Seebeck coefficient and electrical resistance of Bi1-xSbx nanowire arrays electrodeposited in etched ion-track membranes have been investigated as a function of wire diameter (40-750 nm) and composition (0 ≤ x ≤ 1). The experimental data reveal a non-monotonic dependence between thermopower and wire diameter for three different compositions. Thus, the thermopower values decrease with decreasing wire diameter, exhibiting a minimum around ∼60 nm. This non-monotonic dependence of the Seebeck coefficient is attributed to the interplay of surface and bulk states. On the one hand, the metallic properties of the surface states can contribute to decreasing the thermopower of the nanostructure with increasing surface-to-volume ratio. On the other hand, for wires thinner than ∼60 nm, the relative increase of the thermopower can be tentatively attributed to the presence of quantum-size effects on both surface and bulk states. These measurements contribute to a better understanding of the interplay between bulk and surface states in nanostructures, and indicate that the decrease of Seebeck coefficient with decreasing diameter caused by the presence of surfaces states can possibly be overcome for even thinner nanowires.
Collapse
Affiliation(s)
- M Cassinelli
- Material Research Department, GSI Helmholtz Centre for Heavy Ion Research GmbH, Planckstrasse. 1, D-64291 Darmstadt, Germany. and Technische Universität Darmstadt, Material- und Geowissenschaften, Petersenstrasse 23, D-64287 Darmstadt, Germany
| | - S Müller
- Material Research Department, GSI Helmholtz Centre for Heavy Ion Research GmbH, Planckstrasse. 1, D-64291 Darmstadt, Germany.
| | - K-O Voss
- Material Research Department, GSI Helmholtz Centre for Heavy Ion Research GmbH, Planckstrasse. 1, D-64291 Darmstadt, Germany.
| | - C Trautmann
- Material Research Department, GSI Helmholtz Centre for Heavy Ion Research GmbH, Planckstrasse. 1, D-64291 Darmstadt, Germany. and Technische Universität Darmstadt, Material- und Geowissenschaften, Petersenstrasse 23, D-64287 Darmstadt, Germany
| | - F Völklein
- University of Applied Sciences Wiesbaden, Am Brückweg 26, 65428, Rüsselsheim, Germany
| | - J Gooth
- Institute of Applied Physics, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany and IBM Research Zurich, Sauemerstrasse 4, 8803 Rueschlikon, Switzerland
| | - K Nielsch
- Institute of Applied Physics, Universität Hamburg, Jungiusstrasse 11, 20355 Hamburg, Germany
| | - M E Toimil-Molares
- Material Research Department, GSI Helmholtz Centre for Heavy Ion Research GmbH, Planckstrasse. 1, D-64291 Darmstadt, Germany.
| |
Collapse
|
6
|
Filgueira JL, Cassinelli M, Battistessa SA, Estable H, Lorenzo A, Scola R. Right atrial approach for acquired posterior ventricular septal defect. Ann Thorac Surg 1988; 45:587-8. [PMID: 3365055 DOI: 10.1016/s0003-4975(10)64556-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
|
7
|
Filgueira JL, Battistessa SA, Estable H, Lorenzo A, Cassinelli M, Scola R. Delayed repair of an acquired posterior septal defect through a right atrial approach. Ann Thorac Surg 1986; 42:208-9. [PMID: 3741017 DOI: 10.1016/s0003-4975(10)60521-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A patient with chronic postinfarction ventricular septal defect located posteriorly is described. The right atrial approach is suggested for these defects and the operative differences between chronic and acute defects are discussed.
Collapse
|
8
|
Binda GA, Terlizzi C, Cassinelli M, De Martini R, Morando GC. [Our experience with fundoplication according to Nissen in the treatment of hiatal hernia]. Chir Ital 1984; 36:85-90. [PMID: 6525679] [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: 01/20/2023]
Abstract
The authors illustrate their experience with the fundoplication according to Nissen in the treatment of hiatal hernia and gastroesophageal reflux, and appraise its effectiveness in the light of the most modern diagnostical methods, among which chiefly the monitored pH-metry of distal oesophagus.
Collapse
|