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Toia F, Di Stefano AB, Muscolino E, Sabatino MA, Giacomazza D, Moschella F, Cordova A, Dispenza C. In-situ gelling xyloglucan formulations as 3D artificial niche for adipose stem cell spheroids. Int J Biol Macromol 2020; 165:2886-2899. [PMID: 33470202 DOI: 10.1016/j.ijbiomac.2020.10.158] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 10/16/2020] [Accepted: 10/20/2020] [Indexed: 12/11/2022]
Abstract
Three-dimensional spheroidal cell aggregates of adipose stem cells (SASCs) are a distinct upstream population of stem cells present in adipose tissue, with enhanced regeneration properties in vivo. The preservation of the 3D structure of the cells, from extraction to administration, can be a promising strategy to ensure optimal conditions for cell viability and maintenance of stemness potential. With this aim, an artificial niche was created by incorporating the spheroids into an injectable, in-situ gelling solution of partially degalactosylated xyloglucan (dXG) and an ad hoc formulated culture medium for the preservation of stem cell spheroid features. The evolution of the mechanical properties and the morphological structure of this artificial niche was investigated by small amplitude rheological analysis and scanning electron microscopy, respectively. Comparatively, systems produced with the same polymer and the typical culture medium (DMEM) used for adipose stem cell (ASC) growth in adherent cell culture conditions were also characterised. Cell viability of both SASCs and ASCs incorporated inside the hydrogel or seeded on top of the hydrogel were investigated as well as the preservation of SASC stemness conditions when embedded in the hydrogel.
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Affiliation(s)
- F Toia
- Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy; BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy
| | - A B Di Stefano
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy
| | - E Muscolino
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze 6, 90128 Palermo, Italy
| | - M A Sabatino
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze 6, 90128 Palermo, Italy
| | - D Giacomazza
- Istituto di BioFisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy
| | - F Moschella
- BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy
| | - A Cordova
- Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy; BIOPLAST-Laboratory of BIOlogy and Regenerative Medicine-PLASTic Surgery, Dipartimento di Discipline Chirurgiche, Oncologiche e Stomatologiche, Università degli Studi di Palermo, via del Vespro 129, 90127 Palermo, Italy
| | - C Dispenza
- Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze 6, 90128 Palermo, Italy; Istituto di BioFisica, Consiglio Nazionale delle Ricerche, Via U. La Malfa 153, 90146 Palermo, Italy.
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Dispenza C, Sabatino MA, Ajovalasit A, Ditta LA, Ragusa M, Purrello M, Costa V, Conigliaro A, Alessandro R. Nanogel-antimiR-31 conjugates affect colon cancer cells behaviour. RSC Adv 2017. [DOI: 10.1039/c7ra09797b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Soft nanogels, produced by electron beam irradiation, are conjugated to the inhibitor of miR-31, an important molecule in colorectal cancer progression. AntimiR-31 interacts with its biological target in vitro, without being detached from the nanogel.
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Affiliation(s)
- C. Dispenza
- Dipartimento dell'Innovazione Industriale e Digitale (DIID)
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
- Istituto di Biofisica (IBF)
| | - M. A. Sabatino
- Dipartimento dell'Innovazione Industriale e Digitale (DIID)
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | - A. Ajovalasit
- Dipartimento dell'Innovazione Industriale e Digitale (DIID)
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | - L. A. Ditta
- Dipartimento dell'Innovazione Industriale e Digitale (DIID)
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | - M. Ragusa
- Dipartimento di Scienze Biomediche e Biotecnologiche
- Unità di BioMedicina Molecolare
- Genomica e dei Sistemi Complessi (BMGS)
- Università di Catania
- 95123 Catania
| | - M. Purrello
- Dipartimento di Scienze Biomediche e Biotecnologiche
- Unità di BioMedicina Molecolare
- Genomica e dei Sistemi Complessi (BMGS)
- Università di Catania
- 95123 Catania
| | - V. Costa
- Piattaforma Tecnologica per l'Ingegneria Tissutale
- Teranostica ed Oncologia
- Palermo
- Italy
| | - A. Conigliaro
- Dipartimento di Biopatologia e Biotecnologie Mediche
- Sezione di Biologia e Genetica
- Università degli Studi di Palermo
- Palermo
- Italy
| | - R. Alessandro
- Dipartimento di Biopatologia e Biotecnologie Mediche
- Sezione di Biologia e Genetica
- Università degli Studi di Palermo
- Palermo
- Italy
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Abstract
Nanogels combine the favourable properties of hydrogels with those of colloids. They can be soft and conformable, stimuli-responsive and highly permeable, and can expose a large surface with functional groups for conjugation to small and large molecules, and even macromolecules. They are among the very few systems that can be generated and used as aqueous dispersions. Nanogels are emerging materials for targeted drug delivery and bio-imaging, but they have also shown potential for water purification and in catalysis. The possibility of manufacturing nanogels with a simple process and at relatively low cost is a key criterion for their continued development and successful application. This paper highlights the most important structural features of nanogels related to their distinctive properties, and briefly presents the most common manufacturing strategies. It then focuses on synthetic approaches that are based on the irradiation of dilute aqueous polymer solutions using high-energy photons or electron beams. The reactions constituting the basis for nanogel formation and the approaches for controlling particle size and functionality are discussed in the context of a qualitative analysis of the kinetics of the various reactions.
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Affiliation(s)
- C Dispenza
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy. .,School of Chemical Science and Engineering, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden.
| | - G Spadaro
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica, Università degli Studi di Palermo, Viale delle Scienze, Edificio 6, 90128, Palermo, Italy
| | - M Jonsson
- School of Chemical Science and Engineering, Royal Institute of Technology (KTH), 100 44, Stockholm, Sweden
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Dispenza C, Sabatino MA, Grimaldi N, Mangione MR, Walo M, Murugan E, Jonsson M. On the origin of functionalization in one-pot radiation synthesis of nanogels from aqueous polymer solutions. RSC Adv 2016. [DOI: 10.1039/c5ra23926e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
E-beam irradiation is a “green”, one-step route for the production of biocompatible nanogels from polymer aqueous solutions. Functional group density is tuned independently from size and molecular weight by a proper choice of irradiation conditions.
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Affiliation(s)
- C. Dispenza
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
- School of Chemical Science and Engineering
| | - M. A. Sabatino
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | - N. Grimaldi
- Dipartimento di Ingegneria Chimica, Gestionale, Informatica, Meccanica
- Università degli Studi di Palermo
- 90128 Palermo
- Italy
| | - M. R. Mangione
- CNR – Istituto di Biofisica (IBF) UOS Palermo
- 90146 Palermo
- Italy
| | - M. Walo
- Centre for Radiation Research and Technology
- Institute of Nuclear Chemistry and Technology
- 03-195 Warsaw
- Poland
| | - E. Murugan
- School of Chemical Science and Engineering
- Applied Physical Chemistry
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
| | - M. Jonsson
- School of Chemical Science and Engineering
- Applied Physical Chemistry
- KTH Royal Institute of Technology
- SE-100 44 Stockholm
- Sweden
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Grimaldi N, Sabatino M, Przybytniak G, Kaluska I, Bondì M, Bulone D, Alessi S, Spadaro G, Dispenza C. High-energy radiation processing, a smart approach to obtain PVP-graft-AA nanogels. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.04.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Spadaro G, Alessi S, Dispenza C, Sabatino M, Pitarresi G, Tumino D, Przbytniak G. Radiation curing of carbon fibre composites. Radiat Phys Chem Oxf Engl 1993 2014. [DOI: 10.1016/j.radphyschem.2013.05.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dispenza C, Rigogliuso S, Grimaldi N, Sabatino M, Bulone D, Bondì M, Ghersi G. Structure and biological evaluation of amino-functionalized PVP nanogels for fast cellular internalization. REACT FUNCT POLYM 2013. [DOI: 10.1016/j.reactfunctpolym.2013.04.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Dispenza C, Sabatino MA, Niconov A, Chmielewska D, Spadaro G. E-beam crosslinked, biocompatible functional hydrogels incorporating polyaniline nanoparticles. Radiat Phys Chem Oxf Engl 1993 2012. [DOI: 10.1016/j.radphyschem.2011.11.043] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Alessi S, Conduruta D, Pitarresi G, Dispenza C, Spadaro G. Accelerated ageing due to moisture absorption of thermally cured epoxy resin/polyethersulphone blends. Thermal, mechanical and morphological behaviour. Polym Degrad Stab 2011. [DOI: 10.1016/j.polymdegradstab.2010.12.027] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Dispenza C, Ricca M, LoPresti C, Battaglia G, La Valle M, Giacomazza D, Bulone D. E-beam irradiation and UV photocrosslinking of microemulsion-laden poly(N-vinyl-2-pyrrolidone) hydrogels for “in situ” encapsulation of volatile hydrophobic compounds. Polym Chem 2011. [DOI: 10.1039/c0py00161a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Dispenza C, Alessi S, Spadaro G. Carbon fiber composites cured by γ-radiation-induced polymerization of an epoxy resin matrix. Adv Polym Technol 2008. [DOI: 10.1002/adv.20127] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alessi S, Dispenza C, Fuochi P, Corda U, Lavalle M, Spadaro G. E-beam curing of epoxy-based blends in order to produce high-performance composites. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2007.02.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Alessi S, Parlato A, Dispenza C, De Maria M, Spadaro G. The influence of the processing temperature on gamma curing of epoxy resins for the production of advanced composites. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2007.02.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dispenza C, Fiandaca G, Lo Presti C, Piazza S, Spadaro G. Electrical properties of γ-crosslinked hydrogels incorporating organic conducting polymers. Radiat Phys Chem Oxf Engl 1993 2007. [DOI: 10.1016/j.radphyschem.2007.02.036] [Citation(s) in RCA: 13] [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: 10/23/2022]
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Dispenza C, Presti CL, Belfiore C, Spadaro G, Piazza S. Electrically conductive hydrogel composites made of polyaniline nanoparticles and poly(N-vinyl-2-pyrrolidone). POLYMER 2006. [DOI: 10.1016/j.polymer.2005.12.071] [Citation(s) in RCA: 120] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Cordova A, Corradino B, Pirrello R, Di Lorenzo S, Dispenza C, Moschella F. Surgical treatment of pharyngostomes in irradiated patients. Our experience with musculocutaneous pectoralis major flap and hyperbaric oxygen therapy. Acta Otolaryngol 2005; 125:759-64. [PMID: 16012039 DOI: 10.1080/00016480510027556] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
CONCLUSION Our experience confirms that pectoralis major flap is the first-choice technique for repairing recurrent hypopharyngeal fistulae in previously irradiated patients in whom microsurgical techniques are not indicated, and that hyperbaric oxygen therapy helps to solve this complex pathology. OBJECTIVES A pharyngostome is a complication encountered when performing surgical operations on pharyngolaryngeal structures. The authors present their experience of treating recurrent complex pharyngostomes in previously irradiated patients in poor physical health. These patients need a simple, safe reconstruction with a low incidence of postoperative complications. MATERIAL AND METHODS A pedicled pectoralis major flap was used for reconstruction: the skin side of the flap was used to restore the continuity of the pharyngeal mucosa, while the muscle was used to reconstruct the intermediate layer. The skin layer was completed by means of a free skin graft. In all cases, surgical treatment was combined with hyperbaric oxygen therapy before and after the operation. RESULTS A total of 10 patients, all of whom had previously undergone surgery and radiotherapy, had recurring or pluri-recurring pharyngostomes. All patients (8 males, 2 females; age range 52-80 years) had previously been affected by carcinoma of the pharyngolaryngeal region. All underwent major local Ablation together with radical neck dissection and radiotherapy. In all cases there was mucosa on the posterior wall; a musculocutaneous pectoralis major flap was used in all cases for reconstruction.
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Affiliation(s)
- A Cordova
- Dipratimento di Discipline Chirurgiche ed Oncologiche, Divisione di Chirurgia Plastica e Ricostruttiva, Facolta di Medicina, Universita di Palermo, Palermo, Italy.
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Tutino M, Restivo S, Casanova S, Ochoa E, Dispenza C, Gargano R. Far infrared radiofrequency (RF) generated as new non invasive method for the treatment of head and neck pathologies. Int J Oral Maxillofac Surg 2005. [DOI: 10.1016/s0901-5027(05)81222-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dispenza C, Saraniti C, Ferrara S, Martines F, Caramanna C, Salzano FA. Frontal sinus osteoma and palpebral abscess: case report. Rev Laryngol Otol Rhinol (Bord) 2005; 126:49-51. [PMID: 16080649] [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: 05/03/2023]
Abstract
Osteomas of the paranasal sinuses are slow-growing, benign tumours most frequently found in the frontal sinus with an incidence that varies from 47% to 80% of the cases; there are often no symptoms and they are diagnosed by chance during an x-ray examination. The symptoms are usually headaches and those secondary to ocular or neurological complications. The therapy to be preferred is surgery. The authors describe a case of frontal osteoma complicated by frontal sinusitis and palpebral abscess.
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Affiliation(s)
- C Dispenza
- Istituto di Clinica Otorinolaringoiatrica R, Dir. Prof. P. Ferrara, Università degli Studi di Palermo, Via del Vespro 129, I-90100 Palermo, Italy
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Dispenza C, Martines F, Dispenza F, Caramanna C, Saraniti C. Frontal sinus osteoma complicated by palpebral abscess: case report. Acta Otorhinolaryngol Ital 2004; 24:357-60. [PMID: 15952687] [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: 05/02/2023]
Abstract
Osteomas of the paranasal sinuses are slow-growing, benign tumours most frequently found in the frontal sinus with an incidence that varies from 47% to 80% of the cases; there are often no symptoms and they are diagnosed by chance during an X-ray examination. When there are symptoms, they are usually headaches and ocular or neurological complications. The treatment of choice is surgery. A case of frontal osteoma complicated by frontal sinusitis and by a palpebral abscess is described.
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Affiliation(s)
- C Dispenza
- ENT Institute R, Department of Specialistic Surgery, P. Giaccone Polyclinic, University of Palermo, Italy.
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Dispenza C, Saraniti C, Dispenza F, Caramanna C, Salzano FA. Management of nasal septal abscess in childhood: our experience. Int J Pediatr Otorhinolaryngol 2004; 68:1417-21. [PMID: 15488974 DOI: 10.1016/j.ijporl.2004.05.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2004] [Revised: 05/24/2004] [Accepted: 05/26/2004] [Indexed: 10/26/2022]
Abstract
UNLABELLED A nasal septal abscess is usually the result of an infected hematoma of the septum. A secondary septal abscess may be the result of infections extending from any of the neighbouring tissues. The necrosis of septal cartilage may lead to nasal deformities and severe impairment of nasal patency and growth. OBJECTIVES Assess if the drainage of the abscess and the immediate reconstruction of the destroyed nasal septum in the acute phase is the best treatment to prevent short- and long-term effect on nasal and midface growth. METHODS Three pediatric patients treated with drainage and immediate implantation of homologous bank cartilage prior to 1990 and four treated with mosaic plastic using small pieces of residual septal cartilage assembled with fibrin glue. RESULT No complication were observed in the follow-up and any deformities in the long-term controls. CONCLUSIONS The drainage and immediate reconstruction of the nasal septum are the golden standard in the treatment of the septum infected haematoma.
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Affiliation(s)
- C Dispenza
- Clinica Otorinolaringoiatrica, Università di Palermo, Azienda Ospedaliera Policlinico P. Giaccone, Via P. E. Giudici n. 37, Palermo 90127, Italy.
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Dispenza C, Saraniti C, Caramanna C, Dispenza F. Endoscopic treatment of maxillary sinus mucocele. Acta Otorhinolaryngol Ital 2004; 24:292-6. [PMID: 15871612] [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: 05/02/2023]
Abstract
Four patients with mucocele of maxillary sinus, observed between 1995 and 2001, with two years' follow-up, are described. Aim of the present study was to establish whether endoscopic marsupialization of the maxillary sinus mucocele is adequate resolutive treatment without complete removal of the mucocele wall, using more invasive approaches. The surgical procedure used was endoscopic endonasal marsupialization by a middle and/or inferior meatal antrostomy. Outcome confirms that this technique is the gold standard treatment in this disorder. In fact, complete removal of the mucocele wall is not necessary thus avoiding the risk of iatrogenic lesions of neighbouring structures in the case of a bony erosion (orbital floor, posterior wall of the maxillary sinus).
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Affiliation(s)
- C Dispenza
- Otorhinolaryngology Department, University of Palermo, Palermo, Italy.
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Spadaro G, Dispenza C, Mc Grail PT, Valenza A, Cangialosi D. Submicron structured polymethyl methacrylate/acrylonitrile-butadiene rubber blends obtained via gamma radiation induced ?in situ? polymerization. Adv Polym Technol 2004. [DOI: 10.1002/adv.20010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Dispenza C, Saraniti C, Caramanna C. [Frontal-lateral laryngectomy]. An Otorrinolaringol Ibero Am 2003; 30:201-11. [PMID: 12784571] [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: 03/02/2023]
Abstract
We present our series of 21 patients treated since 1991 to 2000 with glottic carcinomas T1a-b with commissure extension. The surgical technique used has been frontolateral laryngectomy as Leroux-Robert in 8 cases, and in the other 13 cases we have contributed with somme variations using a piece of superficial cervical fascia to close the thyroid opening and a piece of the vestibular band for the reconstruction at the glottic level. We studied the functional and oncological results we have obtained with a minimum control of one year and maximum of seven years.
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Affiliation(s)
- C Dispenza
- Istituto di Clinica Otorinolaringoiatrica r Università degli Studi di Palermo
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Dispenza C, Scró F, Valenza A, Spadaro G. High energy radiation cure of resin systems for structural adhesives and composite applications. Radiat Phys Chem Oxf Engl 1993 2002. [DOI: 10.1016/s0969-806x(01)00484-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Affiliation(s)
- C Dispenza
- Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, University of Palermo, Viale delle Scienze, 90128, Palermo, Italy
| | - J T Carter
- ICI Technology, Wilton Centre, PO Box 90, Middlesbrough TS90 8JE, UK
| | - P T McGrail
- ICI Technology, Wilton Centre, PO Box 90, Middlesbrough TS90 8JE, UK
| | - G Spadaro
- Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, University of Palermo, Viale delle Scienze, 90128, Palermo, Italy
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Filardo G, Dispenza C, Silvestri G, Spadaro G. Irradiation of low density and high density polyethylenes in presence of carbon dioxide in subcritical and supercritical conditions. J Supercrit Fluids 1998. [DOI: 10.1016/s0896-8446(98)00080-1] [Citation(s) in RCA: 5] [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: 11/24/2022]
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Dispenza C, Filardo G, Silvestri G, Spadaro G. Carboxylation of linear low density polyethylene through gamma irradiation in presence of supercritical carbon dioxide. Grafted groups analysis via derivatization procedures. Colloid Polym Sci 1997. [DOI: 10.1007/s003960050096] [Citation(s) in RCA: 5] [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: 11/29/2022]
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Spadaro G, Dispenza C, Giammona G, Pitarresi G, Cavallaro G. Cytarabine release from alpha, beta-poly (N-hydroxyethyl)-DL-aspartamide matrices cross-linked through gamma-radiation. Biomaterials 1996; 17:953-8. [PMID: 8736728 DOI: 10.1016/0142-9612(96)84668-0] [Citation(s) in RCA: 23] [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: 02/01/2023]
Abstract
alpha, beta-Poly (N-hydroxyethyl)-DL-aspartamide solutions were cross-linked through gamma-radiation and the systems obtained were tested as matrices for drug sustained release, using cytarabine as model drug. We performed the characterization of the cross-linked polymer, both drug-loaded and unloaded. through water swelling measurements, scanning electron microscopy and X-ray analysis. Finally, we investigated the in vitro release behaviour of cytarabine.
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Affiliation(s)
- G Spadaro
- Dipartimento di Ingegneria Chimica dei Processi e Materiali, Università di Palermo, Palermo, Italy
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