Idrogel polimerici per lenti a contatto come mezzo di rilascio dei farmaci

Dopo una ampia descrizione delle caratteristiche delle lenti a contatto (lac) gli Autori fanno il punto sull’interesse delle lenti a contatto come mezzo di rilascio di farmaci. In effetti, solo il 5% del farmaco instillato è biodisponibile e attualmente i colliri rappresentano oltre il 90% della farmacopea oftalmologica. La biodisponibilità può essere migliorata mediante l’impiego di lenti a contatto in grado di rilasciare un principio attivo. Vengono utilizzati vari materiali: polimeri di idrogel convenzionali, polimeri di idrogel utilizzati in piggyback con un farmaco strutturato a lamine o una soluzione terapeutica, polimeri modificati per isolare il principio attivo alla superficie della lente, polimeri di idrogel nei quali viene incluso il farmaco nella struttura colloidale, polimeri di idrogel con ligandi ionici, polimeri di idrogel molecolarmente preformato che conferiscono alla lente una elevata affinità e una elevata selettività per un dato farmaco. Vengono descritti i vantaggi e gli inconvenienti di ciascun metodo

Application of Generalized Parallel Delta Networks to a Hybrid Broadband Switch

This paper deals with a new broadband switch architecture which is able to offer both the Asynchronous and the Circuit Emulation Transfer Modes (ATM and CEM) for nonisochronous and isochronous services, respectively. The switch is based on the Generalized Parallel Delta Networks (GPDNs) and operates according to the cut-through technique. The rearrangeabilityand the self-routing properties of GPDNs assure that CEM information units cross the interconnection network without conflicts, with a constant delay time and with a fully distributed transfer control. The paper provides a general description of the switch operation and the results of a preliminary performance evaluation

Central Dipsogenic Effect of Synthetic Rat Atrial Natriuretic Polypeptide in Normotensive Rats

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Wireless for the factory: The Wi-Fact analysis

Wireless in shop-floors is a bet: it outlines the possibility of making automation more flexible and to simplify plant reconfiguration. However, the specific context subtends several challenging requirements, which the available off-the-shelf solutions are not 100%-ready to cope with. By the way, the potential benefits of wireless for automation are so significant that it is worth investigating novel techniques to enforce the available wireless transceivers, so as to make them suitable for factories. The Italian regional project Wi-Fact is putting under close scrutiny the context of wireless automation to identify the most significant threats and proposing solutions to stem them. This paper take stock of the project achievements at its mid-term turning poin

Hepatitis C in the elderly: a multicentre cross-sectional study by the Italian Association for the Study of the Liver.

BACKGROUND: The prevalence of hepatitis C virus infection increases with advancing age, but elderly hepatitis C virus patients remain an understudied population. AIM: To define the virological, epidemiological and clinical profiles of Italian outpatients aged 65 years and over infected by hepatitis C virus. METHODS: We evaluated 1544 anti-hepatitis C virus positive patients aged 6565 years referred to 34 Italian outpatient specialty clinics over a two-year period. RESULTS: The study population included 1134 (73%) early elderly (65-74 years) and 410 (27%) late elderly patients ( 6575 years). Late elderly subjects were less likely to have their virus genotyped, their viral load assessed or a histological evaluation of liver disease. Overall, 30% of patients had advanced liver disease whose prevalence increased with increasing age. In both age groups, about 40% of patients had normal transaminase levels. Excluding patients with past infection, 51% had not received any antiviral treatment and only 25% were treated after the age of 65. Late elderly patients, women and patients with advanced liver diseases had been less frequently treated. The main reason for exclusion from treatment was age followed by the presence of comorbid conditions. CONCLUSIONS: Elderly hepatitis C virus patients referred to Italian specialty clinics have advanced and underestimated liver disease. Nevertheless, they are progressively understudied in parallel with increasing age

Pegylated interferon α plus ribavirin for the treatment of chronic hepatitis C: A multicentre independent study supported by the Italian Drug Agency

168nononeBackground: Data on the efficacy of Peg-interferon/ribavirin therapy for chronic hepatitis C are mostly derived from treatment of selected patients enrolled in clinical trials. This study aimed to assess the effectiveness of Peg-interferon/ribavirin therapy in "real world" chronic hepatitis C patients in Italy. Methods: Independent observational multicentre study including consecutive patients receiving Peg-interferon/ribavirin in the 18 months before (retrospective phase) and after (prospective phase) the start of the study. Results: 4176 patients were eligible. The final study population consisted of 2051 patients in the retrospective and 2073 in the prospective phase.Sustained virological response was achieved by 1036 patients (50.5%) during the retrospective phase: 325 were genotypes 1/4 (34.1%) and 684 were genotypes 2/3 (67.2%) and by 800 patients (38.6%) during the prospective phase: 300 were genotypes 1/4 (28.4%) and 473 were genotypes 2/3 (51.5%).During multivariate analysis genotypes 2/3 were significantly associated with higher sustained virological response rates; cirrhosis and γ-glutamil-transpeptidase >2 times the normal limit were associated with poorer response. Conclusions: The response to Peg-interferon/ribavirin therapy in "real world" clinical practice is distinctly lower than in registration trials. The difference in response rates was more pronounced among easy-to-treat than among difficult-to-treat hepatitis C virus genotypes. © 2014 Editrice Gastroenterologica Italiana S.r.l.Rosina, Floriano; Tosti, Maria Elena; Borghesio, Elisabetta; Masocco, Maria; Mele, Alfonso; Coppola, Carmine; Milella, Michele; Borgia, Guglielmo; Andreone, Pietro; Koch, Maurizio; Zignego, Anna Linda; Romano, Mario; Carrara, Maurizio; Almasio, Piero Luigi; Azzola, Emilio; Nardone, Gerardo; Benedetti, Antonio; Carosi, Giampiero; Mazzotta, Francesco; Sagnelli, Evangelista; Rizzetto, Mario; Mascolo, M.C.; Cursaro, C.; Scuteri, A.; Crespi, C.; Gianstefani, A.; Ranieri, J.; Monti, M.; Corti, G.; Blanc, P.L.; Baragli, F.; Bellentani, S.; Gasbarrini, A.; Pompili, M.; Mecenate, F.; Picardi, A.; Vespasiani, U.; Nosotti, Null; Gasbarrini, A.; Pompili, M.; Mecenate, F.; Null, A.Picardi; Nosotti, Null; Ricci, G.L.; Paffetti, A.; Mastropietro, C.; Moretti, A.; Spagnolo, A.L.; Puoti, C.; Bellis, L.; Regazzetti, A.; Maffezzini, E.; Pietrangelo, A.; Abbati, G.; Borghi, A.; Sardini, C.; Raimondo, G.; Scribano, L.; Martines, D.; Svegliati Baroni, G.; Faraci, G.; Schi-anchi, S.; Fornaciari, G.; Massari, M.; Fabris, P.; Bertin, T.; Salvagnini, M.; Madonia, S.; Calì, A.; Civitavecchia, G.; Pirisi, M.; Smirne, C.; Andreoletti, M.; Morisco, F.; Caporaso, N.; Gentile, I.; Brancaccio, G.; Gaeta, G.B.; Liberti, A.; Iannece, M.D.; Rocco, A.; Federico, A.; Loguercio, C.; Riegler, G.; Esposito, P.; Fargion, S.; Fatta, E.; Masutti, F.; Bonaventura, M.E.; Autolitano, A.; Russello, M.; Bellia, A.; Toniutto, P.; Bitetto, D.; Pasulo, L.; Lucà, M.G.; Grattagliano, I.; Palasciano, G.; Romagno, D.; Giannelli, G.; Napoli, N.; Plattella, M.S.; Cassano, P.; Gobbo, G.; Monti, V.; Raspanti, A.; Cuccorese, Null; Colombo, A.E.; Mandelli, G.; Spinzi, G.C.; Floridia, Null; Messina, V.; Bonfante, S.; Bellissima, P.; Toti, M.; Vecchiet, J.; Falasca, K.; Portelli, V.; Stefano, G. De; Pietromatera, G.; Viganò, P.; Re, T.; Andreoni, M.; Null, G.Raineri; Grossi, P.A.; Caputo, S.; Cassola, G.; Feasi, M.; Biagio, A. Di; Nicolini, L.; Giannini, E.G.; Corbo, M.; Foti, G.; Kunkar, A.; Caterini, L.; Migliorini, D.; Chiodera, A.; Calleri, G.; Spezia, C.; Framarin, L.; Null, M.Berrutti; Ciancio, A.; Baiguera, C.; Puoti, M.; Vento, S.; Contini, C.; Boccia, S.; Casiraghi, M.A.; Simone, L.; Tacconi, D.; Caremani, M.; Almi, P.; Chimenti, M.; Cosco, Null; Messeri, D.; Esperti, F.C.; Lomonaco, L.; Pazzi, P.; Fornari, F.; Comparato, G.; Casetti, T.; Foschi, F.G.; Samori, A.; Ferretti, E.; Marin, R.; Campo, N.; Testa, R.; Rizzo, S.Rosina, Floriano; Tosti, Maria Elena; Borghesio, Elisabetta; Masocco, Maria; Mele, Alfonso; Coppola, Carmine; Milella, Michele; Borgia, Guglielmo; Andreone, Pietro; Koch, Maurizio; Zignego, Anna Linda; Romano, Mario; Carrara, Maurizio; Almasio, Piero Luigi; Azzola, Emilio; Nardone, Gerardo; Benedetti, Antonio; Carosi, Giampiero; Mazzotta, Francesco; Sagnelli, Evangelista; Rizzetto, Mario; Mascolo, M. C.; Cursaro, C.; Scuteri, A.; Crespi, C.; Gianstefani, A.; Ranieri, J.; Monti, M.; Corti, G.; Blanc, P. L.; Baragli, F.; Bellentani, S.; Gasbarrini, A.; Pompili, M.; Mecenate, F.; Picardi, A.; Vespasiani, U.; Nosotti, Null; Gasbarrini, A.; Pompili, M.; Mecenate, F.; Null, A. Picardi; Nosotti, Null; Ricci, G. L.; Paffetti, A.; Mastropietro, C.; Moretti, A.; Spagnolo, A. L.; Puoti, C.; Bellis, L.; Regazzetti, A.; Maffezzini, E.; Pietrangelo, A.; Abbati, G.; Borghi, A.; Sardini, C.; Raimondo, G.; Scribano, L.; Martines, D.; Svegliati Baroni, G.; Faraci, G.; Schi anchi, S.; Fornaciari, G.; Massari, M.; Fabris, P.; Bertin, T.; Salvagnini, M.; Madonia, S.; Calì, A.; Civitavecchia, G.; Pirisi, M.; Smirne, C.; Andreoletti, M.; Morisco, F.; Caporaso, N.; Gentile, I.; Brancaccio, G.; Gaeta, G. B.; Liberti, A.; Iannece, M. D.; Rocco, A.; Federico, A.; Loguercio, C.; Riegler, G.; Esposito, P.; Fargion, S.; Fatta, E.; Masutti, F.; Bonaventura, M. E.; Autolitano, A.; Russello, M.; Bellia, A.; Toniutto, P.; Bitetto, D.; Pasulo, L.; Lucà, M. G.; Grattagliano, I.; Palasciano, G.; Romagno, D.; Giannelli, G.; Napoli, N.; Plattella, M. S.; Cassano, P.; Gobbo, G.; Monti, V.; Raspanti, A.; Cuccorese, Null; Colombo, A. E.; Mandelli, G.; Spinzi, G. C.; Floridia, Null; Messina, V.; Bonfante, S.; Bellissima, P.; Toti, M.; Vecchiet, J.; Falasca, K.; Portelli, V.; Stefano, G. De; Pietromatera, G.; Viganò, P.; Re, T.; Andreoni, M.; Null, G. Raineri; Grossi, PAOLO ANTONIO; Caputo, S.; Cassola, G.; Feasi, M.; Biagio, A. Di; Nicolini, L.; Giannini, E. G.; Corbo, M.; Foti, G.; Kunkar, A.; Caterini, L.; Migliorini, D.; Chiodera, A.; Calleri, G.; Spezia, C.; Framarin, L.; Null, M. Berrutti; Ciancio, A.; Baiguera, C.; Puoti, M.; Vento, S.; Contini, C.; Boccia, S.; Casiraghi, M. A.; Simone, L.; Tacconi, D.; Caremani, M.; Almi, P.; Chimenti, M.; Cosco, Null; Messeri, D.; Esperti, F. C.; Lomonaco, L.; Pazzi, P.; Fornari, F.; Comparato, G.; Casetti, T.; Foschi, F. G.; Samori, A.; Ferretti, E.; Marin, R.; Campo, N.; Testa, R.; Rizzo, S

Pegylated interferon α plus ribavirin for the treatment of chronic hepatitis C: a multicentre independent study supported by the Italian Drug Agency

BACKGROUND: Data on the efficacy of Peg-interferon/ribavirin therapy for chronic hepatitis C are mostly derived from treatment of selected patients enrolled in clinical trials. This study aimed to assess the effectiveness of Peg-interferon/ribavirin therapy in "real world" chronic hepatitis C patients in Italy. METHODS: Independent observational multicentre study including consecutive patients receiving Peg-interferon/ribavirin in the 18 months before (retrospective phase) and after (prospective phase) the start of the study. RESULTS: 4176 patients were eligible. The final study population consisted of 2051 patients in the retrospective and 2073 in the prospective phase. Sustained virological response was achieved by 1036 patients (50.5%) during the retrospective phase: 325 were genotypes 1/4 (34.1%) and 684 were genotypes 2/3 (67.2%) and by 800 patients (38.6%) during the prospective phase: 300 were genotypes 1/4 (28.4%) and 473 were genotypes 2/3 (51.5%). During multivariate analysis genotypes 2/3 were significantly associated with higher sustained virological response rates; cirrhosis and γ-glutamil-transpeptidase >2 times the normal limit were associated with poorer response. CONCLUSIONS: The response to Peg-interferon/ribavirin therapy in "real world" clinical practice is distinctly lower than in registration trials. The difference in response rates was more pronounced among easy-to-treat than among difficult-to-treat hepatitis C virus genotype

Pegylated interferon α plus ribavirin for the treatment of chronic hepatitis C: A multicentre independent study supported by the Italian Drug Agency

Background: Data on the efficacy of Peg-interferon/ribavirin therapy for chronic hepatitis C are mostly derived from treatment of selected patients enrolled in clinical trials. This study aimed to assess the effectiveness of Peg-interferon/ribavirin therapy in "real world" chronic hepatitis C patients in Italy. Methods: Independent observational multicentre study including consecutive patients receiving Peg-interferon/ribavirin in the 18 months before (retrospective phase) and after (prospective phase) the start of the study. Results: 4176 patients were eligible. The final study population consisted of 2051 patients in the retrospective and 2073 in the prospective phase.Sustained virological response was achieved by 1036 patients (50.5%) during the retrospective phase: 325 were genotypes 1/4 (34.1%) and 684 were genotypes 2/3 (67.2%) and by 800 patients (38.6%) during the prospective phase: 300 were genotypes 1/4 (28.4%) and 473 were genotypes 2/3 (51.5%).During multivariate analysis genotypes 2/3 were significantly associated with higher sustained virological response rates; cirrhosis and γ-glutamil-transpeptidase >2 times the normal limit were associated with poorer response. Conclusions: The response to Peg-interferon/ribavirin therapy in "real world" clinical practice is distinctly lower than in registration trials. The difference in response rates was more pronounced among easy-to-treat than among difficult-to-treat hepatitis C virus genotypes. © 2014 Editrice Gastroenterologica Italiana S.r.l