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Zhou TW, Cappellini G, Tusi D, Franchi L, Parravicini J, Repellin C, Greschner S, Inguscio M, Giamarchi T, Filippone M, Catani J, Fallani L. Observation of universal Hall response in strongly interacting Fermions. Science 2023; 381:427-430. [PMID: 37498998 DOI: 10.1126/science.add1969] [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] [Received: 05/26/2022] [Accepted: 06/14/2023] [Indexed: 07/29/2023]
Abstract
The Hall effect, which originates from the motion of charged particles in magnetic fields, has deep consequences for the description of materials, extending far beyond condensed matter. Understanding such an effect in interacting systems represents a fundamental challenge, even for small magnetic fields. In this work, we used an atomic quantum simulator in which we tracked the motion of ultracold fermions in two-leg ribbons threaded by artificial magnetic fields. Through controllable quench dynamics, we measured the Hall response for a range of synthetic tunneling and atomic interaction strengths. We unveil a universal interaction-independent behavior above an interaction threshold, in agreement with theoretical analyses. The ability to reach hard-to-compute regimes demonstrates the power of quantum simulation to describe strongly correlated topological states of matter.
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Affiliation(s)
- T-W Zhou
- Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
| | - G Cappellini
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
| | - D Tusi
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
| | - L Franchi
- Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy
| | - J Parravicini
- Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
| | - C Repellin
- Université Grenoble Alpes, CNRS, LPMMC, 38000 Grenoble, France
| | - S Greschner
- Department of Quantum Matter Physics, University of Geneva, 1211 Geneva, Switzerland
| | - M Inguscio
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
- Department of Engineering, Campus Bio-Medico University of Rome, 00128 Rome, Italy
| | - T Giamarchi
- Department of Quantum Matter Physics, University of Geneva, 1211 Geneva, Switzerland
| | - M Filippone
- Université Grenoble Alpes, CEA, IRIG-MEM-L_SIM, 38000 Grenoble, France
| | - J Catani
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
| | - L Fallani
- Department of Physics and Astronomy, University of Florence, 50019 Sesto Fiorentino, Italy
- Istituto Nazionale di Ottica del Consiglio Nazionale delle Ricerche (CNR-INO), Sezione di Sesto Fiorentino, 50019 Sesto Fiorentino, Italy
- European Laboratory for Non-Linear Spectroscopy (LENS), 50019 Sesto Fiorentino, Italy
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Franchi M, Karamanos KA, Cappadone C, Calonghi N, Greco N, Franchi L, Onisto M, Masola V. Colorectal Cancer Cell Invasion and Functional Properties Depend on Peri-Tumoral Extracellular Matrix. Biomedicines 2023; 11:1788. [PMID: 37509428 PMCID: PMC10376217 DOI: 10.3390/biomedicines11071788] [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: 05/24/2023] [Revised: 06/16/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
We investigated how the extracellular matrix (ECM) affects LoVo colorectal cancer cells behavior during a spatiotemporal invasion. Epithelial-to-mesenchymal transition (EMT) markers, matrix-degrading enzymes, and morphological phenotypes expressed by LoVo-S (doxorubicin-sensitive) and higher aggressive LoVo-R (doxorubicin-resistant) were evaluated in cells cultured for 3 and 24 h on Millipore filters covered by Matrigel, mimicking the basement membrane, or type I Collagen reproducing a desmoplastic lamina propria. EMT and invasiveness were investigated with RT-qPCR, Western blot, and scanning electron microscopy. As time went by, most gene expressions decreased, but in type I Collagen samples, a strong reduction and high increase in MMP-2 expression in LoVo-S and -R cells occurred, respectively. These data were confirmed by the development of an epithelial morphological phenotype in LoVo-S and invading phenotypes with invadopodia in LoVo-R cells as well as by protein-level analysis. We suggest that the duration of culturing and type of substrate influence the morphological phenotype and aggressiveness of both these cell types differently. In particular, the type I collagen meshwork, consisting of large fibrils confining inter fibrillar micropores, affects the two cell types differently. It attenuates drug-sensitive LoVo-S cell aggressiveness but improves a proteolytic invasion in drug-resistant LoVo-R cells as time goes by. Experimental studies on CRC cells should examine the peri-tumoral ECM components, as well as the dynamic physical conditions of TME, which affect the behavior and aggressiveness of both drug-sensitive and drug-resistant LoVo cells differently.
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Affiliation(s)
- Marco Franchi
- Department for Life Quality Studies, University of Bologna, 47900 Rimini, Italy
| | | | - Concettina Cappadone
- Department of Pharmacy and Biotechnologies, University of Bologna, 40126 Bologna, Italy
| | - Natalia Calonghi
- Department of Pharmacy and Biotechnologies, University of Bologna, 40126 Bologna, Italy
| | - Nicola Greco
- Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy
| | - Leonardo Franchi
- Department of Medicine, University of Bologna, 40126 Bologna, Italy
| | - Maurizio Onisto
- Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy
| | - Valentina Masola
- Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy
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d'Apuzzo F, Nucci L, Correra A, Minervini G, Quinzi V, Marzo G, Franchi L, Grassia V. Analysis of maxillary arch expansion in growing patients treated with early Class III protocol versus RME. Eur J Paediatr Dent 2023. [PMID: 37038825 DOI: 10.23804/ejpd.2023.1881] [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] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
Abstract
Aim To evaluate and compare the maxillary arch expansion obtained in growing patients treated with Class III early treatment protocol (the modified SEC III protocol), or rapid maxillary expansion (RME). Methods This retrospective observational study included patients in the mixed dentition with maxillary constriction and/ or dental crowding. The first group consisted of 30 patients (11 males and 19 females, mean age 9.4 ±1.7 years) with dentoskeletal Class III malocclusion treated with the modified SEC III protocol. The second group of 30 patients (14 males and 16 females, mean age 9.3 ±1.5 years) with Class I or II malocclusion was treated with a Hyrax-type expander applied to bands on the first upper molars. For each subject, initial (T0) and post expansion (T1) digital dental casts were collected. The intermolar and intercanine widths, the arch lengths at both cusp and gingival levels, the anteroposterior length and the palatal depth were measured at T0 and T1. Results At T1 there were statistically significant differences for 3-3 occlusal (OC) (P < 0.009), arch-length OC (P <0.030), anteroposterior arch-length (AP) (P <0.003), Depth (P <0.030) and Ap (P <0.000). No statistically significant T0-T1 changes were found between the modified SEC III and Hyrax groups except for Depth (P <0.011) with a mean difference of 2.3 mm between the two groups. Conclusions Both bonded and banded expanders, used in the modified SEC III protocol and RME treatment respectively, produced similar changes in the upper arch. The different initial dentoskeletal malocclusions of the two sample groups were not relevant to the post-expansion arch changes.
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Affiliation(s)
- F d'Apuzzo
- DDS, MS, PhD, Research fellow,Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - L Nucci
- DDS, PhD student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - A Correra
- DDS, Postgraduate student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - G Minervini
- DDS, MS, PhD student, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
| | - V Quinzi
- DDS, MS, PhD, Assistant Professor, Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy
| | - G Marzo
- DDS, MS, PhD, Full Professor, Director of the Postgraduate Orthodontic Program, Department of Life, Health and Environmental Sciences, University of L'Aquila, Italy
| | - L Franchi
- DDS, MS, PhD, Associate Professor, Dean of the School of Dentistry, Director of the Postgraduate Orthodontic Program, Department of Experimental and Clinical Medicine, University of Florence, Italy
| | - V Grassia
- DDS, MS, PhD, Assistant Professor, Multidisciplinary Department of Medical-Surgical and Dental Specialties, University of Campania Luigi Vanvitelli, Naples, Italy
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Pace R, Giuliani V, Di Nasso L, Pagavino G, Franceschi D, Franchi L. Regenerative Endodontic Therapy using a New Antibacterial Root Canal Cleanser in necrotic immature permanent teeth: Report of two cases treated in a single appointment. Clin Case Rep 2021; 9:1870-1875. [PMID: 33936606 PMCID: PMC8077429 DOI: 10.1002/ccr3.3696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/06/2020] [Revised: 12/04/2020] [Accepted: 12/09/2020] [Indexed: 12/20/2022] Open
Abstract
A case of regenerative endodontics: (a) before treatment; (b) post-treatment Xray; (c) follow-up at 6 months; (d) follow-up at 12 months.
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Affiliation(s)
- R Pace
- Department of Experimental and Clinical Medicine University of Florence Italy
| | - V Giuliani
- Department of Experimental and Clinical Medicine University of Florence Italy
| | - L Di Nasso
- Department of Experimental and Clinical Medicine University of Florence Italy
| | - G Pagavino
- Department of Experimental and Clinical Medicine University of Florence Italy
| | - D Franceschi
- Department of Experimental and Clinical Medicine University of Florence Italy
| | - L Franchi
- Department of Experimental and Clinical Medicine University of Florence Italy
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Favero V, Zanotti G, Franchi L, Zago G, Zarantonello M, Winkler A, Sivolella S, De Santis D, Favero L. Interceptive use of pendulum for advance resolution of class II patient: a guided eruption plan to reduce stress on permanent teeth root. J BIOL REG HOMEOS AG 2020; 34:21-36. [PMID: 33541062] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Use of the so-called distalizing mechanics is a common treatment to correct class II malocclusion. One of the first appliances made for molar distalization was the pendulum, which resulted immediately efficient. The knowledge of pendulum efficacy, in regards to distalizing treatment in adolescence, has guided the research to analyze pendulum effect in childhood: checking the pre-eruptive, natural and distal movement of upper second premolar following first upper molar distalization in order to obtain an advance resolution on Angle's Class II patient, limited treatment time, reduced periodontal inflammation and stress on permanent teeth root. A pilot study testing the possibility of a prospective study was necessary on 6 patients treated following an accurate protocol (6 months and 1-year Rx control) and 6 patient control after one year. Statistical analysis by T-Test was done. Oral hygiene controls every month were done. Second upper bicuspid vertical (1.6mm) and sagittal (2.5mm) movement mean values allow to emphasize a distal variation of tooth axis inclination of treatment group than control group, and a second upper bicuspid distal departure from "gubernaculus dentis" of second deciduous molar in treated patients. Periodontal inflammation appears inexistent on second and first upper premolar germs after the comparison between RX exam of treatment and control groups because of exploiting deciduous teeth. Besides periodontal inflammation and teeth root stress on first upper molar of treatment group, after RX analysis, results were limited compared to control groups because of the advanced orthodontic interceptive treatment during a previous stage of first upper molar root development.
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Affiliation(s)
- V Favero
- University of Verona-Surgical Science, Dentistry, Gynecology and Pediatrics Department, Verona, Italy
| | | | - L Franchi
- University of Florence-Clinical and Experimental Medicine Department, Florence, Italy
| | - G Zago
- Free practitioner in Padua, Italy
| | | | | | - S Sivolella
- University of Padua-Neuroscience Department, Padua, Italy
| | - D De Santis
- University of Verona-Surgical Science, Dentistry, Gynecology and Pediatrics Department, Verona, Italy
| | - L Favero
- University of Padua-Neuroscience Department, Padua, Italy
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Franchi M, Piperigkou Z, Karamanos KA, Franchi L, Masola V. Extracellular Matrix-Mediated Breast Cancer Cells Morphological Alterations, Invasiveness, and Microvesicles/Exosomes Release. Cells 2020; 9:E2031. [PMID: 32899718 PMCID: PMC7564980 DOI: 10.3390/cells9092031] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/13/2022] Open
Abstract
Breast cancer is a leading disease in women. Several studies are focused to evaluate the critical role of extracellular matrix (ECM) in various biochemical and molecular aspects but also in terms of its effect on cancer cell morphology and therefore on cancer cell invasion and metastatic potential. ECM fibrillar components, such as collagen and fibronectin, affect cell behavior and properties of mammary cancer cells. The aim of this study was to investigate using the scanning electron microscopy (SEM) how the highly invasive MDA-MB-231 breast cancer cells, interplaying with ECM substrates during cell migration/invasion, modify their morphological characteristics and cytoplasmic processes in relation to their invasive potential. In particular we reproduced and analyzed how natural structural barriers to cancer cell invasion, such as the basement membrane (Matrigel) and fibrillar components of dermis (fibronectin as well as the different concentrations/array of type I collagen), could induce morphological changes in 3D cultures. Interestingly, we demonstrate that, even with different effects, all collagen concentrations/arrays lead to morphological alterations of breast cancer cells. Intriguingly, the elongated mesenchymal shaped cells were more prominent in 3D cultures with a dense and thick substrate (thick Matrigel, high concentrated collagen network, and densely packed collagen fibers), even though cells with different shape produced and released microvesicles and exosomes as well. It is therefore evident that the peri-tumoral collagen network may act not only as a barrier but also as a dynamic scaffold which stimulates the morphological changes of cancer cells, and modulates tumor development and metastatic potential in breast cancer.
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Affiliation(s)
- Marco Franchi
- Department for Life Quality Study, University of Bologna, 47921 Rimini, Italy
| | - Zoi Piperigkou
- Biochemistry, Biochemical Analysis & Matrix Pathobiology Research Group, Laboratory of Biochemistry, Department of Chemistry, University of Patras, 26504 Patras, Greece;
| | | | - Leonardo Franchi
- Department of Medicine, University of Bologna, 40100 Bologna, Italy;
| | - Valentina Masola
- Department of Biomedical Sciences, University of Padova, 35129 Padova, Italy;
- Renal Unit, Department of Medicine, University Hospital of Verona, 37100 Verona, Italy
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Paoloni V, Gastaldi G, Franchi L, De Razza FC, Cozza P. Evaluation of the morphometric covariation between palatal and craniofacial skeletal morphology in class III malocclusion growing subjects. BMC Oral Health 2020; 20:152. [PMID: 32460800 PMCID: PMC7251885 DOI: 10.1186/s12903-020-01140-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 05/14/2020] [Indexed: 12/12/2022] Open
Abstract
Background To study the covariation between palatal and craniofacial skeletal morphology in Class III growing patients through geometric morphometric analysis (GMM). Methods In this retrospective study, 54 Class III subjects (24F,30M;7.6 ± 0.8yy) were enrolled following these inclusion criteria: European ancestry, Class III skeletal and dental relationship, early mixed dentition, prepubertal skeletal maturation, familiarity for Class III malocclusion, no pseudo Class III malocclusion. Each patient provided upper digital cast and cephalogram before starting the therapy. Landmarks and semilandmarks were digitized (239 on the casts;121 on the lateral radiographs) and GMM was used. Procrustes analysis and principal component analysis (PCA) were applied to show the principal components of palatal and craniofacial skeletal shape variation. Two-block partial least squares analysis (PLS) was used to assess pattern of covariation between palatal and craniofacial morphology. Results Regarding palatal shape variation, PC with largest variance (PC1) described morphological changes in the three space dimensions, while, concerning the craniofacial complex components, PC1 revealed morphological differences along the vertical plane. A significant covariation was found between palatal and craniofacial shape. PLS1 accounted for more than 61,7% of the whole covariation, correlating the craniofacial divergence to palatal height and width. Conclusions In Class III subjects increments of angle divergence are related to a narrow and high palate.
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Affiliation(s)
- V Paoloni
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy.
| | - G Gastaldi
- Department of Orthodontics, University Vita-Salute San Raffaele, Milan, Italy
| | - L Franchi
- Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
| | - F C De Razza
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
| | - P Cozza
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
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Souki BQ, Vilefort PLC, Oliveira DD, Andrade I, Ruellas AC, Yatabe MS, Nguyen T, Franchi L, McNamara JA, Cevidanes LHS. Three-dimensional skeletal mandibular changes associated with Herbst appliance treatment. Orthod Craniofac Res 2018; 20:111-118. [PMID: 28414870 DOI: 10.1111/ocr.12154] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 02/26/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Three-dimensional evaluation of skeletal mandibular changes following Herbst appliance treatment. SETTING AND SAMPLE POPULATION Retrospective case-control study, based on a sample size calculation. Twenty-five pubertal patients treated with Herbst appliance (HAG), and 25 matched Class II patients who received other non-orthopaedic dental treatments (CG). MATERIAL AND METHODS Three-dimensional models were generated from pre-treatment (T0) and post-treatment (T1) cone beam computed tomograms. Volumetric registration on the cranial base was used to assess mandibular displacement; volumetric regional registration was performed to evaluate mandibular growth. Quantitative measurements of X, Y, Z and 3D Euclidian changes, and also qualitative visualization by colour-mapping and semi-transparent overlays were obtained. RESULTS Downward displacement of the mandible was observed in both HAG and CG (2.4 mm and 1.5 mm, respectively). Significant forward displacement of the mandible was observed in the HAG (1.7 mm). HAG showed greater 3D superior and posterior condylar growth than the CG (3.5 mm and 2.0 mm, respectively). Greater posterior growth of the ramus was noted in the HAG than in CG. CONCLUSIONS Immediately after Herbst therapy, a significant mandibular forward displacement was achieved, due to increased bone remodelling of the condyles and rami compared to a comparison group. Three-dimensional changes in the direction and magnitude of condylar growth were observed in Herbst patients.
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Affiliation(s)
- B Q Souki
- Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | - P L C Vilefort
- Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | - D D Oliveira
- Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | - I Andrade
- Pontifical Catholic University of Minas Gerais, Belo Horizonte, Brazil
| | - A C Ruellas
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - T Nguyen
- University of North Carolina, Chapel Hill, NC, USA
| | - L Franchi
- University of Florence, Florence, Italy
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Angelieri F, Franchi L, Cevidanes LHS, Hino CT, Nguyen T, McNamara JA. Zygomaticomaxillary suture maturation: A predictor of maxillary protraction? Part I - A classification method. Orthod Craniofac Res 2018; 20:85-94. [PMID: 28414869 DOI: 10.1111/ocr.12143] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [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: 02/23/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this study was to present a method of classifying the maturational level of the zygomaticomaxillary sutures (ZMSs). METHODS Cone-beam CT (CBCT) images from 74 subjects (5.6-58.4 years) were examined to define the radiographic stages of ZMS maturation. Five stages of maturation of the ZMS were identified and defined: Stage A-uniform high-density sutural line, with no or little interdigitation; Stage B-scalloped appearance of the high-density sutural line; Stage C-two parallel, scalloped, high-density lines, separated in some areas by small low-density spaces; Stage D-fusion in the inferior portion of the suture; and Stage E-complete fusion. Intra- and inter-examiner agreements were evaluated by weighted kappa tests. RESULTS The intra- and inter-examiners reproducibility values demonstrated substantial to almost perfect agreement. No fusion of ZMSs was observed in patients up to 10 years of age. From 10 to 15 years, all maturational stages were identified. After 15 years of age, the majority of patients showed fusion of ZMSs. CONCLUSIONS The classification of ZMS maturation using CBCT is a reliable method that allows the assessment of the morphology of the ZMSs in the individual patient.
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Affiliation(s)
- F Angelieri
- Department of Orthodontics, Guarulhos University, Guarulhos, Brazil.,Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | - L Franchi
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA.,Department of Orthodontics, The University of Florence, Florence, Italy
| | - L H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | - C T Hino
- Special Studies in Orthodontics, São Paulo Military Hospital, São Paulo, Brazil
| | - T Nguyen
- Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - J A McNamara
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Ann Arbor, MI, USA.,Cell and Development Biology, School of Medicine, Ann Arbor, MI, USA.,Center of Human Growth and Development, The University of Michigan, Ann Arbor, MI, USA
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Angelieri F, Franchi L, Cevidanes L, Gonçalves J, Nieri M, Wolford L, McNamara J. Cone beam computed tomography evaluation of midpalatal suture maturation in adults. Int J Oral Maxillofac Surg 2017; 46:1557-1561. [DOI: 10.1016/j.ijom.2017.06.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Revised: 05/09/2017] [Accepted: 06/27/2017] [Indexed: 10/19/2022]
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Angelieri F, Ruellas AC, Yatabe MS, Cevidanes LHS, Franchi L, Toyama-Hino C, De Clerck HJ, Nguyen T, McNamara JA. Zygomaticomaxillary suture maturation: Part II-The influence of sutural maturation on the response to maxillary protraction. Orthod Craniofac Res 2017; 20:152-163. [PMID: 28660731 DOI: 10.1111/ocr.12191] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [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: 05/25/2017] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To evaluate the influence of the maturational stages of zygomaticomaxillary sutures (ZMS) on the response to maxillary protraction. SUBJECTS AND METHODS A total of 40 Class III patients were treated retrospectively with either a combination of rapid maxillary expansion and facial mask (RME/FM) or bone-anchored maxillary protraction (BAMP). The RME/FM group consisted of 18 patients (mean age 8.3 years), while the BAMP group was comprised of 22 patients (mean age 11.8 years). The initial CBCT images (T1) of the ZMSs were classified blindly. 3D models from CBCT images at the start and at the end of orthopaedic treatment were registered on the anterior cranial base, and corresponding structures were measured on colour-coded maps and semitransparent overlays. The amounts of protraction of the maxilla, zygoma, orbitale and maxillary first molars for both groups were analysed with two-way ANOVA with Holm-Sidak post hoc test for multiple comparisons. RESULTS A significant association was found between the early maturation stages of the ZMSs and the amount of maxillary protraction, regardless of the protraction method used. Class III patients with ZMS stages A and B showed greater maxillary protraction than patients at stage C. CONCLUSION The maturational stages of ZMS are associated with the response maxillary protraction.
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Affiliation(s)
- F Angelieri
- Department of Orthodontics, Guarulhos University, Guarulhos, Brazil.,Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | - A C Ruellas
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA.,Department of Orthodontics and Pediatric Dentistry, School of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - M S Yatabe
- Bauru Dental School, University of São Paulo, Bauru, Brazil
| | - L H S Cevidanes
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA
| | - L Franchi
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA.,Department of Surgery and Translational Medicine, The University of Florence, Florence, Italy
| | - C Toyama-Hino
- Special Studies in Orthodontics, São Paulo Military Hospital, São Paulo, Brazil
| | - H J De Clerck
- Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA.,Private Practice, Brussels, Belgium
| | - T Nguyen
- Department of Orthodontics, School of Dentistry, University of North Carolina, Chapel Hill, NC, USA
| | - J A McNamara
- Department of Orthodontics and Pediatric Dentistry, School of Dentistry, The University of Michigan, Ann Arbor, MI, USA.,Center of Human Growth and Development, School of Medicine, The University of Michigan, Ann Arbor, MI, USA
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Livi LF, Cappellini G, Diem M, Franchi L, Clivati C, Frittelli M, Levi F, Calonico D, Catani J, Inguscio M, Fallani L. Synthetic Dimensions and Spin-Orbit Coupling with an Optical Clock Transition. Phys Rev Lett 2016; 117:220401. [PMID: 27925719 DOI: 10.1103/physrevlett.117.220401] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Indexed: 06/06/2023]
Abstract
We demonstrate a novel way of synthesizing spin-orbit interactions in ultracold quantum gases, based on a single-photon optical clock transition coupling two long-lived electronic states of two-electron ^{173}Yb atoms. By mapping the electronic states onto effective sites along a synthetic "electronic" dimension, we have engineered fermionic ladders with synthetic magnetic flux in an experimental configuration that has allowed us to achieve uniform fluxes on a lattice with minimal requirements and unprecedented tunability. We have detected the spin-orbit coupling with fiber-link-enhanced clock spectroscopy and directly measured the emergence of chiral edge currents, probing them as a function of the flux. These results open new directions for the investigation of topological states of matter with ultracold atomic gases.
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Affiliation(s)
- L F Livi
- LENS European Laboratory for Nonlinear Spectroscopy, I-50019 Sesto Fiorentino, Italy
- INO-CNR Istituto Nazionale di Ottica del CNR, Sezione di Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy
| | - G Cappellini
- Department of Physics and Astronomy, University of Florence, I-50019 Sesto Fiorentino, Italy
- INO-CNR Istituto Nazionale di Ottica del CNR, Sezione di Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy
| | - M Diem
- ILP Institut für Laserphysik, Universität Hamburg, D-20355 Hamburg, Germany
- INRIM Istituto Nazionale di Ricerca Metrologica, I-10135 Torino, Italy
| | - L Franchi
- Department of Physics and Astronomy, University of Florence, I-50019 Sesto Fiorentino, Italy
| | - C Clivati
- INRIM Istituto Nazionale di Ricerca Metrologica, I-10135 Torino, Italy
| | - M Frittelli
- INRIM Istituto Nazionale di Ricerca Metrologica, I-10135 Torino, Italy
| | - F Levi
- INRIM Istituto Nazionale di Ricerca Metrologica, I-10135 Torino, Italy
| | - D Calonico
- INRIM Istituto Nazionale di Ricerca Metrologica, I-10135 Torino, Italy
| | - J Catani
- LENS European Laboratory for Nonlinear Spectroscopy, I-50019 Sesto Fiorentino, Italy
- INO-CNR Istituto Nazionale di Ottica del CNR, Sezione di Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy
- INFN Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, I-50019 Sesto Fiorentino, Italy
| | - M Inguscio
- LENS European Laboratory for Nonlinear Spectroscopy, I-50019 Sesto Fiorentino, Italy
- Department of Physics and Astronomy, University of Florence, I-50019 Sesto Fiorentino, Italy
- INO-CNR Istituto Nazionale di Ottica del CNR, Sezione di Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy
| | - L Fallani
- LENS European Laboratory for Nonlinear Spectroscopy, I-50019 Sesto Fiorentino, Italy
- Department of Physics and Astronomy, University of Florence, I-50019 Sesto Fiorentino, Italy
- INO-CNR Istituto Nazionale di Ottica del CNR, Sezione di Sesto Fiorentino, I-50019 Sesto Fiorentino, Italy
- INFN Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, I-50019 Sesto Fiorentino, Italy
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Ghi T, Franchi L, Fieni S, Dall’Asta A, Gaibazzi N, Siniscalchi C, Pedrazzi G, Sciatti E, Bonadei I, Vizzardi E, Montaguti E, Degli Esposti D, Borghi C, Orabona R, Prefumo F, Frusca T. C4. Maternal cardiac changes during uncomplicated twin pregnancy: does the chorionicity matter? J Matern Fetal Neonatal Med 2016. [DOI: 10.1080/14767058.2016.1234774] [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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Lione R, Buongiorno M, Laganà G, Cozza P, Franchi L. Early treatment of Class III malocclusion with RME and facial mask: evaluation of dentoalveolar effects on digital dental casts. Eur J Paediatr Dent 2015; 16:217-220. [PMID: 26418925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
AIM To analyse the dental effects on digital dental casts in subjects with Class III malocclusion treated with bonded Rapid Maxillary Expansion and Facial Mask (RME/FM). MATERIALS AND METHODS A study group sample (SG) of 29 subjects (13 females and 16 males) and mean age of 7.4 years (SD 1.2 years) was selected. A bonded RME was placed and activated 1/4 of a turn per day until overcorrection of the transverse width. At the end of expansion, patients were given FMs and treated at least to a positive overjet. The SG was compared with a control group (CG) of 21 prepubertal subjects (9 females; 12 males) presenting with normal occlusion and mean age of 7.9 years (SD 1.6 years). For each subject of the SG and CG initial (pretreatment, T1) and final (post-treatment, T2) digital dental casts were available. Significant in between-group differences were tested with the Student's t-test. RESULTS The transverse dimension of the upper arch was significantly greater in SG vs. CG (IMAW: +2.6 mm; ICAW: +3.1 mm). Anterior arch length and arch depth were significantly smaller in SG when compared with CG (AAL: -3.2 mm, AD: -3.4 mm) at the end of therapy. CONCLUSION The orthopaedic treatment with bonded RME/FM produced in subjects treated in the deciduous or early mixed dentition a significant expansion of the maxillary arch and mesialisation of the posterior teeth with a reduction of the arch depth.
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Affiliation(s)
- R Lione
- Research Fellow, Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - M Buongiorno
- Research Fellow, Department of Surgery and Translational Medicine, University of Florence, Italy
| | - G Laganà
- Research Fellow, Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - P Cozza
- Professor and Department Chair, Department of Clinical Sciences and Translational Medicine, University of Rome "Tor Vergata", Rome, Italy
| | - L Franchi
- Assistant Professor, Department of Surgery and Translational Medicine, University of Florence, Florence, Italy
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D'Antò V, Bucci R, Franchi L, Rongo R, Michelotti A, Martina R. Class II functional orthopaedic treatment: a systematic review of systematic reviews. J Oral Rehabil 2015; 42:624-42. [DOI: 10.1111/joor.12295] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2015] [Indexed: 01/08/2023]
Affiliation(s)
- V. D'Antò
- Department of Neuroscience, Reproductive Sciences and Oral Sciences; School of Orthodontics and Temporomandibular disorders; University of Naples “Federico II”; Naples Italy
- Dentist Unit; Department of Pediatric Surgery; “Bambino Gesù” Children Hospital; Rome Italy
| | - R. Bucci
- Department of Neuroscience, Reproductive Sciences and Oral Sciences; School of Orthodontics and Temporomandibular disorders; University of Naples “Federico II”; Naples Italy
| | - L. Franchi
- Department of Surgery and Translational Medicine-Orthodontics; University of Florence; Florence Italy
| | - R. Rongo
- Department of Neuroscience, Reproductive Sciences and Oral Sciences; School of Orthodontics and Temporomandibular disorders; University of Naples “Federico II”; Naples Italy
| | - A. Michelotti
- Department of Neuroscience, Reproductive Sciences and Oral Sciences; School of Orthodontics and Temporomandibular disorders; University of Naples “Federico II”; Naples Italy
| | - R. Martina
- Department of Neuroscience, Reproductive Sciences and Oral Sciences; School of Orthodontics and Temporomandibular disorders; University of Naples “Federico II”; Naples Italy
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Mucedero M, Franchi L, Ricchiuti MR, Cozza P. Association between mesially displaced maxillary first premolars and early displaced maxillary canines. Eur J Paediatr Dent 2015; 16:45-50. [PMID: 25793953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM To evaluate the association between the mesially displaced maxillary first premolar (MDP) and the early displacement of the adjacent permanent canine (EDC) before their eruption. MATERIALS AND METHODS A sample of 1247 subjects in the intermediate mixed dentition stage was assessed for the presence of MDP and EDC. All subjects were divided into two groups: MDP group and noMDP group. For each subject two angular measurements (premolar-occlusal plane η and л premolar-midline angles) were analysed on panoramic radiographs. The chi-square test with Yates correction was performed to compare the prevalence rate of EDC in MDP (MDP-EDC) and noMDP groups. The statistical comparisons for the values of η and л angles between MDP vs noMDP, MDP vs MDP-EDC, and noMDP vs MDP-EDC groups were performed by means of ANOVA with Bonferroni correction. RESULTS The prevalence rate of EDC in the MDP group was significantly greater than in the noMDP group (66% vs. 12.1%). MDP-EDC group showed a significantly larger л angle than in the MDP group resulting in an increased mesial inclination of displaced premolars. CONCLUSION MDP can be considered a dental anomaly associated to maxillary canine displacement.
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Affiliation(s)
- M Mucedero
- Department of Orthodontics, University of Rome "Tor Vergata", Rome, Italy
| | - L Franchi
- Department of Surgery and Translational Medicine, Orthodontics, University of Florence, Florence, Italy
| | - M R Ricchiuti
- Department of Orthodontics, University of Rome "Tor Vergata", Rome, Italy
| | - P Cozza
- Department of Orthodontics, University of Rome "Tor Vergata", Rome, Italy
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Perinetti G, Perillo L, Franchi L, Di Lenarda R, Contardo L. Maturation of the middle phalanx of the third finger and cervical vertebrae: a comparative and diagnostic agreement study. Orthod Craniofac Res 2014; 17:270-9. [PMID: 25230196 DOI: 10.1111/ocr.12052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [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: 08/14/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Diagnostic agreement on individual basis between the third middle phalanx maturation (MPM) method and the cervical vertebral maturation (CVM) method has conjecturally been based mainly on overall correlation analyses. Herein, the true agreement between methods according to stage and sex has been evaluated through a comprehensive diagnostic performance analysis. SUBJECTS AND METHODS Four hundred and fifty-one Caucasian subjects were included in the study, 231 females and 220 males (mean age, 12.2 ± 2.5 years; range, 7.0-17.9 years). The X-rays of the middle phalanx of the third finger and the lateral cephalograms were examined for staging by blinded operators, blinded for MPM stages and subjects' age. The MPM and CVM methods based on six stages, two pre-pubertal (1 and 2), two pubertal (3 and 4), and two post-pubertal (5 and 6), were considered. Specifically, for each MPM stage, the diagnostic performance in the identification of the corresponding CVM stage was described by Bayesian statistics. RESULTS For both sexes, overall agreement was 77.6%. Most of the disagreement was due to 1 stage apart. Slight disagreement was seen for the stages 5 and 6, where the third middle phalanx shows an earlier maturation. CONCLUSIONS The two maturational methods show an overall satisfactorily diagnostic agreement. However, at post-pubertal stages, the middle phalanx of the third finger appears to mature earlier than the cervical vertebrae. Post-pubertal growth phase should thus be based on the presence of stage 6 in MPM.
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Affiliation(s)
- G Perinetti
- Department of Medical, Surgical and Health Sciences, School of Dentistry, University of Trieste, Trieste, Italy
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Masucci C, Franchi L, Giuntini V, Defraia E. Short-term effects of a modified Alt-RAMEC protocol for early treatment of Class III malocclusion: a controlled study. Orthod Craniofac Res 2014; 17:259-69. [PMID: 25041370 DOI: 10.1111/ocr.12051] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To assess the effects of a modified alternate rapid maxillary expansion and constriction (Alt-RAMEC) protocol in combination with facemask (FM) in Class III growing patients. SETTING AND SAMPLE POPULATION Thirty one Class III patients (17 males, 14 females) were treated with a modified Alt-RAMEC/FM protocol at the Department of Orthodontics of the University of Florence. MATERIAL AND METHODS All patients were evaluated at the beginning (T1, mean age 6.4 ± 0.8 years) and at the end of orthopedic therapy (T2, mean age 8.1 ± 0.9 years), and they were compared to a matched sample of 31 Class III patients (16 males and 15 females) treated with rapid maxillary expansion and facemask (RME/FM) and to a matched control group of 21 subjects (9 males and 12 females) with untreated Class III malocclusion. The three groups were compared with anova with Benjamini-Hochberg correction for multiple tests. RESULTS Both the Alt-RAMEC/FM and the RME/FM protocols showed significantly favorable effects leading to correction of the Class III malocclusion. The Alt-RAMEC/FM protocol produced a more effective advancement of the maxilla (SNA +1.2°) and greater intermaxillary changes (ANB +1.7°) vs. the RME/FM protocol. No significant differences were recorded as for mandibular skeletal changes and vertical skeletal relationships. CONCLUSION The Alt-RAMEC/FM protocol induced more favorable skeletal short-term effects compared with RME/FM therapy in Class III growing patients.
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Affiliation(s)
- C Masucci
- Department of Surgery and Translational Medicine, The University of Florence, Florence, Italy
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Pavoni C, Franchi L, Laganà G, Cozza P. Radiographic assessment of maxillary incisor position after rapid maxillary expansion in children with clinical signs of eruption disorder. J Orofac Orthop 2013; 74:468-79. [PMID: 24158584 DOI: 10.1007/s00056-013-0180-x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 03/12/2013] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE In this study we assessed the influence of rapid maxillary expansion (RME) on the intraosseous vertical position and inclination of the impacted incisors diagnosed at an early developmental stage on panoramic radiographs and subsequently treated by surgical removal of the obstacle. MATERIALS AND METHODS Following surgical removal of the obstacles to incisor eruption (T1), a group of 34 subjects (mean age 8 years 11 months ± 11 months) underwent RME, while a group of 28 subjects (mean age 9 years 1 month ± 1 year) was monitored after surgery without further treatment. At T2 (on average 10 months after T1), the prevalence rate of subjects with erupted incisors was recorded. The measurements were taken on the panoramic radiographs at T1 and T2 to assess the vertical position and angulation of delayed unerupted incisors. RESULTS At T2, impacted incisors erupted in 82.4% of the patients in the RME group versus 39.3% of those in the monitored group (χ(2) =8.45, p<0.001). All the patients treated with RME showed an improvement in the vertical and angular position of the unerupted teeth. Logistic regression revealed RME therapy as the only significant predictive variable (p<0.001) for successful eruption of the delayed incisors at T2. CONCLUSION RME in early mixed dentition appears to be an effective procedure to increase the prevalence rate of impacted maxillary incisor eruption.
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Affiliation(s)
- C Pavoni
- Department of Orthodontics, The University of Rome "Tor Vergata", Rome, Italy
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Franchi L, Pavoni C, Cerroni S, Cozza P. Thin-plate spline analysis of mandibular morphological changes induced by early class III treatment: a long-term evaluation. Eur J Orthod 2013; 36:425-30. [DOI: 10.1093/ejo/cjt067] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Auconi P, Scazzocchio M, Defraia E, McNamara JA, Franchi L. Forecasting craniofacial growth in individuals with class III malocclusion by computational modelling. Eur J Orthod 2013; 36:207-16. [DOI: 10.1093/ejo/cjt036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Conti G, Franchi L, Camporesi M, Defraia E. Treatment protocol for the impaction of deciduous maxillary anterior teeth due to compound odontoma. Eur J Paediatr Dent 2012; 13:337-341. [PMID: 23270296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The purpose of this paper was to describe the dental and surgical management of the impaction of deciduous maxillary anterior teeth due to compound odontoma. In all analysed patients impaction of the maxillary deciduous canine was associated with the presence of an odontoma. Therefore, impaction of the maxillary deciduous canine can be considered as pathognomonic of the presence of an intraosseous odontoma. The analysis of the described cases showed that early diagnosis and early removal of the odontoma are essential in improving the prognosis of the involved teeth. Early treatment allows the impacted tooth to re-start the physiological eruption. A conservative surgical approach is advisable in order to minimise damage to the impacted teeth and preserve their normal timing and path of eruption.
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Affiliation(s)
- G Conti
- Dept. Orthodontics, University of Florence, Italy.
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Lione R, Franchi L, Fanucci E, Laganà G, Cozza P. Three-dimensional densitometric analysis of maxillary sutural changes induced by rapid maxillary expansion. Dentomaxillofac Radiol 2012; 42:71798010. [PMID: 22996394 DOI: 10.1259/dmfr/71798010] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE This prospective study evaluated the density of the midpalatal and transverse sutures as assessed by low-dose CT before rapid maxillary expansion (T0), at the end of active expansion (T1) and after a retention period of 6 months (T2). METHODS The study sample comprised 17 pre-pubertal subjects (mean age 11.2 years) with constricted maxillary arches. Total amount of expansion was 7 mm in all subjects. Multislice low-dose CT scans were taken at T0, T1 and T2. On the axial CT scanned images six regions of interest (ROIs) were placed along the midpalatal and transverse sutures and two in maxillary and palatal bony areas. Density was measured in Hounsfield units. Mann-Whitney U test and Friedman analysis of variance with post hoc tests were used (p < 0.05). RESULTS The three ROIs in the midpalatal suture showed a significant decrease in density from T0 to T1, a significant increase from T1 to T2 and a lack of statistically significant differences from T0 to T2. Both ROIs located in the transverse suture showed a significant decrease in density from T0 to T1, followed by a non-significant increase in density from T1 to T2. CONCLUSIONS At the end of the active phase of expansion a significant reduction in density along the midpalatal and transverse sutures was observed in all subjects. The sutural density of the midpalatal suture at T2 indicated reorganization of the midpalatal suture while the density along the transverse suture increased without reaching the pre-treatment values, possibly due to different morphology between midpalatal and transverse sutures.
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Affiliation(s)
- R Lione
- Department of Orthodontics, University of Rome "Tor Vergata", Italy.
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Ozkurede VU, Franchi L. Immunology in clinic review series; focus on autoinflammatory diseases: role of inflammasomes in autoinflammatory syndromes. Clin Exp Immunol 2012; 167:382-90. [PMID: 22288581 PMCID: PMC3374270 DOI: 10.1111/j.1365-2249.2011.04535.x] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [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] [Accepted: 11/18/2011] [Indexed: 12/12/2022] Open
Abstract
UNLABELLED OTHER THEMES PUBLISHED IN THIS IMMUNOLOGY IN THE CLINIC REVIEW SERIES Allergy, Host Responses, Cancer, Type 1 diabetes and viruses, Metabolic diseases. SUMMARY Autoinflammatory syndromes are disorders characterized by the hyperactivation of the innate immune system in the absence of microbial infection or autoantibody production. Some autoinflammatory syndromes are associated with recurrent episodes of fever and systemic inflammation that are caused by dysregulated activation of inflammasomes, molecular platforms responsible for the activation of caspase-1 and the production of interleukin (IL)-1β. In this review we will discuss the role of IL-1β and the inflammasomes in host defence and how mutations of two genes, NLRP3 and PYRIN, leads to the autoinflammatory syndromes, cryopyrin-associated periodic syndromes (CAPS) and familial Mediterranean fever (FMF). Both CAPS and FMF are characterized by increased inflammasome activity and overproduction of IL-1β which is ultimately responsible for disease manifestations. Importantly, understanding the molecular mechanisms of these syndromes has led to effective treatment for these rare diseases with biological drugs that target IL-1β-mediated signalling.
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Affiliation(s)
- V U Ozkurede
- Department of Pathology and Comprehensive Cancer Center, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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Primozic J, Baccetti T, Franchi L, Richmond S, Farcnik F, Ovsenik M. Three-dimensional assessment of palatal change in a controlled study of unilateral posterior crossbite correction in the primary dentition. Eur J Orthod 2011; 35:199-204. [DOI: 10.1093/ejo/cjr125] [Citation(s) in RCA: 22] [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] [Indexed: 11/14/2022]
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Baccetti T, Franchi L. Prediction of the outcome of orthodontic treatment of Class III malocclusion. Eur J Orthod 2011; 33:332; author reply 332-3. [DOI: 10.1093/ejo/cjr066] [Citation(s) in RCA: 3] [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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Laganà G, Lombardi CC, Franchi L, Cozza P. Tooth agenesis: dento-skeletal characteristics in subjects with orthodontic treatment need. Eur J Paediatr Dent 2011; 12:17-20. [PMID: 21434730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
AIM The aim of this study was to analyse skeletal, dental and arch morphology in a group of subjects with dental agenesis and to compare it with a control group. STUDY DESIGN 2 groups of subjects were selected: an experimental group (84 patients) with tooth agenesis and a control group (84 subjects) without tooth agenesis. MATERIALS AND METHODS Skeletal, dental, morphological and aesthetic parameters were studied using lateral and posteroanterior cephalograms and dental casts. RESULTS Transversal and sagittal measurements showed a significant decrease in maxillary size associated with tooth agenesis in the agenesis group. No changes were observed in mandibular size. CONCLUSION Orthodontists should consider that patients with agenesis present altered craniofacial dimensions.
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Affiliation(s)
- G Laganà
- University of Rome Tor Vergata, Specialty School in Orthodontics. giuseppinalagana@ libero.it
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Patrelli TS, D'Addetta F, Gizzo S, Franchi L, Di Gangi S, Sianesi N, Peri F, Pedrazzi G, Berretta R, Piantelli G, Lukanovic A, Nardelli GB, Modena AB. Correlation between fetal movement revealed in actography and fetal-neonatal well-being: observational study on 3,805 pregnancies followed in a Northern Italy tertiary care hospital. CLIN EXP OBSTET GYN 2011; 38:382-385. [PMID: 22268280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
PURPOSE OF INVESTIGATION To evaluate the correlation between fetal movement revealed in cardiotocography and fetal-neonatal well-being as well as to assess the value of cardiotocography in our clinical practice. METHODS Retrospective analysis of 3,805 pregnancies followed at Parma General Hospital. Exclusion criteria were cesarean section, preterm delivery, and stillbirth. We analyzed the predictive power of actography during the dilating and expulsive phases of labor by establishing a correlation between number of fetal movements and our neonatal indexes of well being, i.e., cardiotocographic score, Apgar index and neonatal pH value. Statistical tests used were Fisher's test, chi-square test (X2), Pearson correlation and Spearman Rho; p value was considered significant if it was less than 0.05. RESULTS We considered 2,389 vaginal deliveries. Analyzing the correlation between fetal movement and cardiotocographic score in the two different phases of labor, the comparison among subpopulations identified by different cardiotocograph scores revealed no statistical difference. CONCLUSION Cardiotocography is reconfirmed as a good instrument to evaluate neonatal outcome, while actigraphy cannot be used alone to define fetal well-being, mainly due to the inability to standardize assessment of the actographic study.
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Affiliation(s)
- T S Patrelli
- Department of Obstetrics and Gynecology, University Medical Center Parma, Italy.
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Baccetti T, De Clerck HJ, Cevidanes LH, Franchi L. Morphometric analysis of treatment effects of bone-anchored maxillary protraction in growing Class III patients. Eur J Orthod 2010; 33:121-5. [PMID: 21187527 DOI: 10.1093/ejo/cjq170] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The aim of the present morphometric investigation was to evaluate the effects of bone-anchored maxillary protraction (BAMP) in the treatment of growing patients with Class III malocclusion. The shape and size changes in the craniofacial configuration of a sample of 26 children with Class III malocclusions consecutively treated with the BAMP protocol were compared with a matched sample of 15 children with untreated Class III malocclusions. All subjects in the two groups were at a prepubertal stage of skeletal development at time of first observation. Average duration of treatment was 14 months. Significant treatment-induced modifications involved both the maxilla and the mandible. The most evident deformation consisted of marked forward displacement of the maxillary complex with more moderate favourable effects in the mandible. Deformations in the vertical dimension were not detected. The significant deformations were associated with significant differences in size in the group treated with the BAMP protocol.
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Affiliation(s)
- T Baccetti
- Department of Orthodontics, The University of Florence, Florence, Italy.
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Perinetti G, Contardo L, Ceschi M, Antoniolli F, Franchi L, Baccetti T, Di Lenarda R. Surface corrosion and fracture resistance of two nickel-titanium-based archwires induced by fluoride, pH, and thermocycling. An in vitro comparative study. Eur J Orthod 2010; 34:1-9. [DOI: 10.1093/ejo/cjq093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Baccetti T, Franchi L, Mucedero M, Cozza P. Treatment and post-treatment effects of facemask therapy on the sagittal pharyngeal dimensions in Class III subjects. Eur J Orthod 2009; 32:346-50. [DOI: 10.1093/ejo/cjp092] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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Santoro P, Macchioni P, Franchi L, Tassone F, Ielo MC, Fiego DPL. Effect of Dietary Pantothenic Acid Supplementation on Meat and Carcass Traits in the Heavy Pig. Vet Res Commun 2006. [DOI: 10.1007/s11259-006-0087-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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34
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Monteleone G, Franchi L, Fina D, Caruso R, Vavassori P, Monteleone I, Calabrese E, Naccari GC, Bellinvia S, Testi R, Pallone F. Silencing of SH-PTP2 defines a crucial role in the inactivation of epidermal growth factor receptor by 5-aminosalicylic acid in colon cancer cells. Cell Death Differ 2006; 13:202-11. [PMID: 16082388 DOI: 10.1038/sj.cdd.4401733] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Recent studies have suggested that 5-aminosalicylic acid (5-ASA) inhibits colorectal cancer (CRC) development. However, the mechanism underlying the antineoplastic effect of 5-ASA remains unknown. We here examined the effect of 5-ASA on epidermal growth factor receptor (EGFR) activation, a pathway that triggers mitogenic signals in CRC cells. We show that 5-ASA inhibits EGFR activation, through a mechanism that does not rely on CRC cell death induction. 5-ASA enhances the activity, but not expression, of phosphorylated (p)-EGFR-targeting phosphatases (PTPs), and treatment of cells with PTP inhibitors abrogates the 5-ASA-mediated EGFR dephosphorylation. Both SH-PTP1 and SH-PTP2 interact with EGFR upon 5-ASA treatment. However, knockdown of SH-PTP2 but not SH-PTP1 by small interference RNAs prevents the 5-ASA-induced EGFR dephosphorylation. Finally, we show that 5-ASA attenuates p-EGFR in ex vivo organ cultures of CRC explants. Data indicate that 5-ASA disrupts EGFR signalling by enhancing SH-PTP2 activity, and suggest a mechanism by which 5-ASA interferes with CRC growth.
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Affiliation(s)
- G Monteleone
- Dipartimento di Medicina Interna, Cattedra di Gastroenterologia e Centro di Eccellenza per lo studio delle malattie complesse e multifattoriali, University Tor Vergata of Rome, Rome, Italy.
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35
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Sozio A, Schietroma M, Franchi L, Mazzotta C, Cappelli S, Amicucci G. [Parathyroidectomy: bilateral exploration of the neck vs minimally invasive radioguided treatment]. MINERVA CHIR 2005; 60:83-9. [PMID: 15973213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
AIM In the therapy of primary hyperparathyroidism, the first surgical intervention, if efficacious, can remarkably reduce the incidence of persistence and relapses which are approximately about 5%. At present, the surgical approach of choice should involve the bilateral exploration of the neck. METHODS In the light of the high sensibility (91%) and specificity (98.8%) in the localization of parathyroid adenomas obtained by the parathyroid 99mTc-MIBI scintigraphy, we submitted, prospective and at random, between January 2001 and July 2004, 69 patients with primary hyperparathyroidism, to a conventional surgical treatment (bilateral exploration of the neck: 35 patients) or minimally-invasive approach (minimally invasive radioguided parathyroidectomy: 34 patients). This method consists of the injection of 50 mCi of 99mTc Sestamibi 2 h before the operation and the execution of parathyroid scintigraphy. When the adenoma is evident, we perform an incision of about 4 cm in the neck, 2 cm over the jugulum and the surgical dissection is guided by a probe showing the emission of gamma rays. RESULTS The parameters considered in order to compare the 2 groups, i.e. operating time, hospital stay and time of recovery were reduced in a significant way in the group submitted to the minimally invasive radioguided parathyroidectomy (MIRP). There were no complications in the 2 groups. In the follow-up we did not observe cases of persistence or relapses. CONCLUSIONS Therefore, we can confirm that the minimally invasive radioguided parathyroidectomy is a safe and efficacious method as well as the bilateral exploration of the neck. Moreover, cost reduction may convince many surgeons to consider MIRP the <<gold standard>> in the management of primary hyperparathyroidism.
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Affiliation(s)
- A Sozio
- Divisione di Chirurgia Generale, Dipartimento di Scienze Chirurgiche, Università degli Studi di L'Aquila, L'Aquila, Italy
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Franchi L, Baccetti T. Transverse maxillary deficiency in Class II and Class III malocclusions: a cephalometric and morphometric study on postero-anterior films. Orthod Craniofac Res 2005; 8:21-8. [PMID: 15667642 DOI: 10.1111/j.1601-6343.2004.00312.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
UNLABELLED AUTHORS: Franchi L, Baccetti T. OBJECTIVES The aim of the present study is to evaluate the dentoskeletal features of subjects with either Class II or Class III malocclusions in the mixed dentition using both conventional cephalometric analysis and TPS morphometric analysis applied to posteroanterior (PA) cephalograms. DESIGN TPS analyses of PA cephalograms on 49 Cl-II, and 20 Cl-III subjects. Tracings were done by hand. SETTING AND SAMPLE POPULATION The Department of Orthodontics, University of Florence. OUTCOME MEASURE Size and shape differences between Cl-II and Cl-III malocclusions. RESULTS Maxillary width was smaller in both Cl-II and Cl-III subjects compared with normal as measured conventionally. The TPS analysis revealed transverse plane compression and extension in the vertical plane. CONCLUSION In Cl-II and Cl-III subjects the maxillary width was smaller 2.5 and 4 mm, respectively. TPS analyses corroborate these findings.
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Affiliation(s)
- L Franchi
- Department of Orthodontics, The University of Florence, Florence, Italy.
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Schietroma M, Carlei F, Franchi L, Mazzotta C, Sozio A, Lygidakis NJ, Amicucci G. A comparison of serum interleukin-6 concentrations in patients treated by cholecystectomy via laparotomy or laparoscopy. Hepatogastroenterology 2004; 51:1595-9. [PMID: 15532785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
BACKGROUND/AIMS Interleukin-6 (IL-6), a multifunctional cytokine, is expressed by various cells after many stimuli. This cytokine release is related, among other things, to the extent of the surgically-induced trauma. Laparoscopic cholecystectomy (LC) is a so-called "mini-invasive" surgical procedure and, on the basis of this consideration, the aim of the present prospective non-randomized study, is to examine (a) whether the IL-6 is modified and how, in patients after LC compared to patients undergoing open cholecystectomy (OC), (b) whether these findings are indicative of an increased risk to develop infectious complications and whether they are therefore clinically significant. METHODOLOGY Circulating IL-6 level was measured using a random access chemiluminescense-immunoassay system in 71 patients before the operation (time 0) and 1, 2, 3, 6, 24 and 48 hours after the beginning of the operation. Thirty-five patients underwent OC and 36 LC. RESULTS The increase in the serum IL-6 during LC was found to be significantly smaller than that during OC and resulted in a smaller extent of postoperative elevations for C-reactive protein. We recorded three cases (8.5%) of postoperative infections in the "open" group and IL-6 concentration normalized only 6 days after surgery. CONCLUSIONS An increase in the serum IL-6 level during LC is lower in comparison to OC and results in lower postoperative elevation in C-reactive protein. Laparoscopic surgery, associated with a small skin incision and the avoidance of open laparotomy, can thus minimize surgical stress, and provide more favorable postoperative conditions for patients. Indeed excessive and prolonged post-injury elevations are associated with increased morbidity.
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Affiliation(s)
- M Schietroma
- Department of Surgery, University of L'Aquila, Coppito, Italy.
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38
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Schietroma M, Carlei F, Mownah A, Franchi L, Mazzotta C, Sozio A, Amicucci G. Changes in the blood coagulation, fibrinolysis, and cytokine profile during laparoscopic and open cholecystectomy. Surg Endosc 2004; 18:1090-6. [PMID: 15136925 DOI: 10.1007/s00464-003-8819-0] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2003] [Accepted: 09/08/2003] [Indexed: 12/13/2022]
Abstract
BACKGROUND It has long been known that a hypercoagulability state develops after surgery. A surge in circulating cytokine levels is also commonly found in the postoperative period. These cytokines have all been shown to be capable of inducing a hypercoagulability state. Recently laparoscopic cholecystectomy (LC) has been introduced, and its advantages over the open procedure seem related to the reduced surgical trauma. LC is associated with a diminished acute-phase response compared with the open procedure. Our present knowledge on the influence of laparoscopic upon coagulation and fibrinolysis is incomplete and based on a few studies. METHODS The aim of this prospective, nonrandomized study was to investigate hemostatic system alterations in patients who undergo open and laparoscopic cholecystectomy. In addition we also measured the plasma cytokine profile to explore any relationship between changes in plasma cytokine levels and postoperative coagulation profile. Between September 1999 and April 2002, 71 patients were nonrandomly assigned to open (group 1) or laparoscopic cholecystectomy (group 2). All patients from group 1 were operated by a surgical team different from ours, who prefers the OC procedure. The patients with acute cholecystitis were excluded. Prothrombin fragment 1.2 (F1.2), thrombin-antithrombin (TAT), fibrinogen, soluble fibrin, antithrombin III (AT), protein C, plasminogen, and D-dimer levels were measured at baseline and at 1, 24, 48, and 72 h postoperatively. Serial serum levels of IL-1beta and IL-6 were measured by colorimetric enzyme-linked immunosorbent assay (ELISA). RESULTS Plasma levels of F1.2, TAT, fibrinogen, soluble fibrin, and D-dimer increased significantly in group 1. Plasma levels of AT, protein C, and plasminogen decreased in both groups. In the OC group, the serum IL-3 and IL-6 levels began to significantly increased as early as 1 h from the beginning of the operation, revealing a peak at the sixth hour. When IL-6 and IL-1 levels were markedly elevated also, F1.2, fibrinogen, and soluble fibrin levels were increased. CONCLUSIONS Only mild hypercoagulability was observed in patients who had undergone laparoscopic cholecystectomy. The cytokine surge was correlated with hypercoagulability. There was in fact a positive correlation between IL-6 level and hypercoagulability. The correlation between cytokine levels and coagulation activation may be related to the type of surgery performed. Further studies are required to investigate these issues.
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Affiliation(s)
- M Schietroma
- Department of Surgery, University of L'Aquila, Via Vetoio, Blocco 11, 67100 Coppito (AQ), Italy.
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Guadagni S, Sozio A, Mazzotta C, Franchi L, Amicucci G. Hypoxic Pelvic Perfusion and Hyperthermia. Tumori 2002. [DOI: 10.1177/030089160208800451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- S Guadagni
- Dipartimento Scienze Chirurgiche, Università de L'Aquila, Italy
| | - A Sozio
- Dipartimento Scienze Chirurgiche, Università de L'Aquila, Italy
| | - C Mazzotta
- Dipartimento Scienze Chirurgiche, Università de L'Aquila, Italy
| | - L Franchi
- Dipartimento Scienze Chirurgiche, Università de L'Aquila, Italy
| | - G Amicucci
- Dipartimento Scienze Chirurgiche, Università de L'Aquila, Italy
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Guadagni S, D'Alessandro V, Marsili L, Palumbo G, Franchi L, Sozio A, Mazzotta C, Amicucci G. [Isolation regional perfusion]. Suppl Tumori 2002; 1:S32-4. [PMID: 12415784] [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: 02/27/2023]
Affiliation(s)
- S Guadagni
- Università di L'Aquila, AUSL di L'Aquila
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Abstract
The aim of this study was to evaluate the short-term and long-term treatment effects of rapid maxillary expansion in 2 groups of subjects treated with the Haas appliance. Treatment outcomes were evaluated before and after the peak in skeletal maturation, as assessed by the cervical vertebral maturation (CVM) method, in a sample of 42 patients compared to a control sample of 20 subjects. Posteroanterior cephalograms were analyzed for the treated subjects at T1 (pretreatment), T2 (immediate post-expansion) and T3 (long-term observation), and were available at T1 and at T3 for the controls. The mean age (years: months) at T1 was 11:10 for both the treated and the control groups. The mean ages at T3 also were comparable (20:6 for the treated group and 17:8 for the controls). Following expansion and retention (2 months on average), fixed standard edgewise appliances were placed. The study included transverse measurements on dentoalveolar structures, maxillary and mandibular bases and other craniofacial regions (nasal, zygomatic, orbital, and cranial). Treated and control samples were divided into 2 groups according to individual skeletal maturation. The early-treated and early-control groups had not reached the pubertal peak in skeletal growth velocity at T1 (CVM 1 to 3), whereas the late-treated and late-control groups were during or slightly after the peak at T1 (CVM 4 to 6). The group treated before the pubertal peak showed significantly greater short-term increases in the width of the nasal cavities. In the long-term, maxillary skeletal width, maxillary intermolar width, lateronasal width, and lateroorbitale width were significantly greater in the early-treated group. The late-treated group exhibited significant increases in lateronasal width and in maxillary and mandibular intermolar widths. Rapid Maxillary Expansion treatment before the peak in skeletal growth velocity is able to induce more pronounced transverse craniofacial changes at the skeletal level.
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Affiliation(s)
- T Baccetti
- Department of Orthodontics, The University of Florence, Italy.
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Abstract
Neurospora crassa is the only molecular genetic model system for circadian rhythms research in the fungi. Its strengths as a model organism lie in its relative simplicity--compared to photosynthesizing and vertebrate organisms, it is a stripped-down version of life. It forms syncitial hyphae, propagates and reproduces, and the circadian clock is manifest in numerous processes therein. As with other model circadian systems, Neurospora features a transcription/translation feedback loop that is fundamental to an intact circadian system. The molecular components of this loop converge with those of blue light photoreception, thus bringing the clock and one of its input pathways together.
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Affiliation(s)
- M Merrow
- Institute for Medical Psychology, University of Munich, 80336 Munich, Germany.
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Abstract
The analysis of mandibular growth changes around the pubertal spurt in humans has several important implications for the diagnosis and orthopedic correction of skeletal disharmonies. The purpose of this study was to evaluate mandibular shape and size growth changes around the pubertal spurt in a longitudinal sample of subjects with normal occlusion by means of an appropriate morphometric technique (thin-plate spline analysis). Ten mandibular landmarks were identified on lateral cephalograms of 29 subjects at 6 different developmental phases. The 6 phases corresponded to 6 different maturational stages in cervical vertebrae during accelerative and decelerative phases of the pubertal growth curve of the mandible. Differences in shape between average mandibular configurations at the 6 developmental stages were visualized by means of thin-plate spline analysis and subjected to permutation test. Centroid size was used as the measure of the geometric size of each mandibular specimen. Differences in size at the 6 developmental phases were tested statistically. The results of graphical analysis indicated a statistically significant change in mandibular shape only for the growth interval from stage 3 to stage 4 in cervical vertebral maturation. Significant increases in centroid size were found at all developmental phases, with evidence of a prepubertal minimum and of a pubertal maximum. The existence of a pubertal peak in human mandibular growth, therefore, is confirmed by thin-plate spline analysis. Significant morphological changes in the mandible during the growth interval from stage 3 to stage 4 in cervical vertebral maturation may be described as an upward-forward direction of condylar growth determining an overall "shrinkage" of the mandibular configuration along the measurement of total mandibular length. This biological mechanism is particularly efficient in compensating for major increments in mandibular size at the adolescent spurt.
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Affiliation(s)
- L Franchi
- Department of Orthodontics, The University of Florence, Italy.
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Baccetti T, Franchi L, McNamara JA. Treatment and posttreatment craniofacial changes after rapid maxillary expansion and facemask therapy. Am J Orthod Dentofacial Orthop 2000; 118:404-13. [PMID: 11029736 DOI: 10.1067/mod.2000.109840] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.0] [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: 11/22/2022]
Abstract
The aim of this study was to evaluate treatment and posttreatment dentoskeletal changes in 2 groups of subjects with Class III malocclusions. Subjects were treated with a bonded acrylic-splint expander and a face mask, and the optimal timing for this treatment protocol was assessed. The treated sample (29 subjects) was divided into 2 groups according to the stage of dental development. The early treatment group consisted of 16 subjects in the early mixed dentitional (erupting permanent incisors and/or first molars), whereas the late treatment group consisted of 13 subjects in the late mixed dentition (erupting permanent canines and premolars). Cephalograms were available at 3 time periods: T(1), pretreatment, T(2), end of active treatment, and T(3), posttreatment. The mean T(1)-T(2) interval (active treatment period) and the mean T(2)-T(3) interval (posttreatment period) were approximately 1 year each in both treatment groups. None of the patients wore any skeletal retention appliance during the posttreatment period (T(2)-T(3)). Groups of subjects with untreated Class III malocclusion were used as controls at both observation intervals. A significant increase in the sagittal growth of the maxilla was seen only when treatment was performed in the early mixed dentition. A restraining effect on mandibular growth rate associated with a more upward and forward direction of condylar growth was found in both treatment groups. An increase in vertical intermaxillary relationships was observed in Class III patients treated in the late mixed dentition. Posttreatment, the Class III craniofacial growth pattern was re-established in the absence of any skeletal retention appliance. Relapse tendency affects the sagittal growth of the maxilla in the early treated subjects and the sagittal position of the mandible in the late treated subjects. Orthopedic treatment of Class III malocclusion in the early mixed dentition is able to induce more favorable craniofacial adaptations than treatment in the late mixed dentition.
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Affiliation(s)
- T Baccetti
- Department of Orthodontics, The University of Florence, Florence, Italy.
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Abstract
The purpose of this study was to analyze the validity of 6 stages of cervical vertebral maturation (Cvs1 through Cvs6) as a biologic indicator for skeletal maturity in 24 subjects (15 females, 9 males). The method was able to detect the greatest increment in mandibular and craniofacial growth during the interval from vertebral stage 3 to vertebral stage 4 (Cvs3 to Cvs4), when the peak in statural height also occurred. The prevalence rate of examined subjects who presented with the peak in body height at this interval was 100% for boys and 87% for girls. Statural height and total mandibular length (Co-Gn) showed significant increments during the growth interval Cvs3 to Cvs4 when compared with the growth interval Cvs2 to Cvs3, and significant growth deceleration occurred during the interval Cvs4 to Cvs5 when compared with Cvs3 to Cvs4. Ramus height (Co-Goi) and S-Gn also showed significant deceleration of growth during the interval Cvs4 to Cvs5 when compared with Cvs3 to Cvs4. Cervical vertebral maturation appears to be an appropriate method for the appraisal of mandibular skeletal maturity in individual patients on the basis of a single cephalometric observation and without additional x-ray exposure. The accuracy of the cervical vertebral method in the detection of the onset of the pubertal spurt in mandibular growth provides helpful indications concerning treatment timing of mandibular deficiencies.
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Affiliation(s)
- L Franchi
- Department of Orthodontics, University of Florence, Italy.
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Abstract
This cephalometric study evaluated skeletal and dentoalveolar changes induced by the Twin-block appliance in 2 groups of subjects with Class II malocclusion treated at different skeletal maturation stages in order to define the optimal timing for this type of therapy. Skeletal maturity in individual patients was assessed on the basis of the stages of cervical vertebrae maturation. The early-treated group was composed of 21 subjects (11 females and 10 males). Mean age of these subjects at time 1 (immediately before treatment) was 9 years +/- 11 months, and at time 2 (immediately after discontinuation of the Twin-block appliance) was 10 years 2 months +/- 11 months. According to the cervical vertebrae maturation staging at times 1 and 2, the peak in growth velocity was not included in the treatment period for any of the subjects in the early group. The late-treated group consisted of 15 subjects (6 females and 9 males). Mean age of this group was 12 years 11 months +/- 1 year 2 months at time 1 and 14 years 4 months +/- 1 year 3 months at time 2. In the late group, treatment was performed during or slightly after the onset of the pubertal growth spurt. Both treated samples were compared with control samples consisting of subjects with untreated Class II malocclusions also selected on the basis of the stage in cervical vertebrae maturation. A modification of Pancherz's cephalometric analysis was applied to the lateral cephalograms of all examined groups at both time periods. Linear and angular measurements for mandibular dimensions, cranial base angulation, and vertical relationships were added to the original analysis. Annualized differences for all the variables from time 1 to time 2 were calculated for both treated groups and contrasted to the annualized differences in the corresponding untreated groups by means of nonparametric statistics. The findings of this short-term cephalometric study indicate that optimal timing for Twin-block therapy of Class II disharmony is during or slightly after the onset of the pubertal peak in growth velocity. When compared with treatment performed before the peak, late Twin-block treatment produces more favorable effects that include: (1) greater skeletal contribution to molar correction, (2) larger increments in total mandibular length and in ramus height, and (3) more posterior direction of condylar growth, leading to enhanced mandibular lengthening and to reduced forward displacement of the condyle in favor of effective skeletal changes. The importance of the biological evaluation of skeletal maturity in individual patients with Class II disharmony to be treated with functional appliances is emphasized.
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Affiliation(s)
- T Baccetti
- Department of Orthodontics, University of Florence, Italy.
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Abstract
Mutations in either white collar-1 (wc-1) or white collar-2 (wc-2) lead to a loss of most blue-light-induced phenomena in Neurospora crassa. Sequence analysis and in vitro experiments show that WC-1 and WC-2 are transcription factors regulating the expression of light-induced genes. The WC proteins form homo- and heterodimers in vitro; this interaction could represent a fundamental step in the control of their activity. We demonstrate in vivo that the WC proteins are assembled in a white collar complex (WCC) and that WC-1 undergoes a change in mobility due to light-induced phosphorylation events. The phosphorylation level increases progressively upon light exposure, producing a hyperphosphorylated form that is degraded and apparently replaced in the complex by a newly synthesized WC-1. WC-2 is unmodified and also does not change quantitatively in the time frame examined. Light-dependent phosphorylation of WC-1 also occurs in a wc-2 mutant, suggesting that a functional WC-2 is dispensable for this light-specific event. These results suggest that light-induced phosphorylation and degradation of WC-1 could play a role in the transient expression of blue-light-regulated genes. Our findings suggest a mechanism by which WC-1 and WC-2 mediate light responses in Neurospora.
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Affiliation(s)
- C Talora
- Dipartimento di Biotecnologie Cellulari Ed Ematologia, Sezione di Genetica Molecolare, Universita' di Roma 'La Sapienza', Policlinico Umberto I, Viale Regina Elena 32, 00161 Rome, Italy
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Baccetti T, Franchi L, McNamara JA. Thin-plate spline analysis of treatment effects of rapid maxillary expansion and face mask therapy in early Class III malocclusions. Eur J Orthod 1999; 21:275-81. [PMID: 10407536 DOI: 10.1093/ejo/21.3.275] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
An effective morphometric method (thin-plate spline analysis) was applied to evaluate shape changes in the craniofacial configuration of a sample of 23 children with Class III malocclusions in the early mixed dentition treated with rapid maxillary expansion and face mask therapy, and compared with a sample of 17 children with untreated Class III malocclusions. Significant treatment-induced changes involved both the maxilla and the mandible. Major deformations consisted of forward displacement of the maxillary complex from the pterygoid region and of anterior morphogenetic rotation of the mandible, due to a significant upward and forward direction of growth of the mandibular condyle. Significant differences in size changes due to reduced increments in mandibular dimensions were associated with significant shape changes in the treated group.
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Affiliation(s)
- T Baccetti
- Department of Orthodontics, University of Florence, Italy
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49
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Abstract
This study evaluated the skeletal and dentoalveolar changes induced by acrylic splint Herbst therapy of Class II malocclusion. The treated group comprised 55 subjects with Class II malocclusion treated with the acrylic splint Herbst appliance followed by comprehensive edgewise therapy. The mean age at Time 1 (immediately before treatment) was 12 years and 10 months +/- 1 year and 2 months. The mean age at Time 2 (immediately after debonding of the Herbst appliance) and Time 3 (posttreatment) was 13 years and 10 months +/- 1 year and 2 months and 15 years and 2 months +/- 1 year and 4 months, respectively. The two control groups were one group of 30 subjects with untreated Class II malocclusion and another group of 33 subjects with Class I occlusion. The three groups were homogeneous as to the stage of maturation of cervical vertebrae at all observation times. A modification of Pancherz's cephalometric analysis was applied to the lateral cephalograms of the three groups at Time 1, Time 2, and Time 3. Linear and angular measurements for mandibular dimensions, cranial base angulation, and vertical relationships were added to the original analysis. Differences for all the variables from Time 1 to Time 2 (active treatment effects), from Time 2 to Time 3 (posttreatment effects), and from Time 1 to Time 3 (overall treatment effects) were calculated for the treated group and contrasted to corresponding differences of both untreated groups by means of ANOVA (P <.05). The study showed that two thirds of the achieved occlusal correction was due to skeletal effects and only one third to dentoalveolar adaptations. Both skeletal and dentoalveolar effects were due mainly to changes in mandibular structures. A significant amount of relapse in molar relationship occurred during the posttreatment period, and this change could be ascribed to the mesial movement of the upper molars.
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Affiliation(s)
- L Franchi
- Department of Orthodontics, The University of Florence, Italy.
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Franchi A, Gallo O, Bocciolini C, Franchi L, Paglierani M, Santucci M. Reduced E-cadherin expression correlates with unfavorable prognosis in adenoid cystic carcinoma of salivary glands of the oral cavity. Am J Clin Pathol 1999; 111:43-50. [PMID: 9894453 DOI: 10.1093/ajcp/111.1.43] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Reduced expression of E-cadherin (E-cad), a transmembrane glycoprotein, is associated with loss of differentiation, acquisition of an invasive phenotype, and an unfavorable prognosis in carcinomas from several sites. We used immunohistochemistry to study the expression of E-cad in 50 adenoid cystic carcinomas (ACCs) in salivary glands to evaluate correlations with clinicopathologic parameters and patient survival. Absent or low E-cad expression was observed more frequently in solid than in cribriform or tubular carcinomas. E-cad expression also was significantly correlated with histologic grade and the growth pattern. In addition, ACCs showing low or absent E-cad expression were more frequently larger than 4 cm in diameter, and distant metastases developed more frequently. Reduced expression correlated with shorter disease-free intervals and actuarial survival rates. Univariate and multivariate analysis identified tumor stage and E-cad expression as the only 2 parameters predictive of the disease-free interval. E-cad expression and tumor stage, grade, and type of growth were significant prognostic factors for survival in univariate analysis, while tumor stage, type of growth, and E-cad expression were the only significant covariates in multivariate analysis. These findings indicate that the loss of E-cad has an important role in the natural history of ACC, as it is associated with loss of differentiation and development of metastases. We also provide evidence that E-cad expression is an independent indicator of clinical aggressiveness in patients with ACC, together with clinical stage and type of growth at the periphery of the tumor.
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Affiliation(s)
- A Franchi
- Institute of Anatomic Pathology, University of Florence Medical School, Italy
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