11. Thoracobiliary fistulas : literature review and a case report of fistula closure with omentum majusAnton Crnjac, Vid Pivec, Arpad Ivanecz, 2013, review article Abstract: Background. Thoracobiliary fistulas are pathological communications between the biliary tract and the bronchial tree (bronchobiliary fistulas) or the biliary tract and the pleural space (pleurobiliary fistulas). Review of the literature. We have reviewed aetiology, pathogenesis, predilection formation points, the clinical picture, diagnostic possibilities, and therapeutic options for thoracobiliary fistulas. Case report. A patient with an iatrogenic bronchobiliary fistula which developed after radiofrequency ablation of a colorectal carcinoma metastasis of the liver is present. We also describe the closure of the bronchobiliary fistula with the greater omentum as a possible manner of fistula closure, which was not reported previously according to the knowledge of the authors. Conclusions. Newer papers report of successful non-surgical therapy, although the bulk of the literature advocates surgical therapy. Fistula closure with the greater omentum is a possible method of the thoracobiliary fistula treatment.
Keywords: thoracobiliary fistula, bronchobiliary fistula, therapy, omentum majus
Published in DiRROS: 22.03.2024; Views: 164; Downloads: 42
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12. A web-application that extends functionality of medical device for tumor treatment by means of electrochemotherapyIvan Pavlović, Peter Kramar, Selma Čorović, David Cukjati, Damijan Miklavčič, 2004, original scientific article Abstract: Electrochemotherapy (ECT) is a novel method for efficient tumor treatment in clinical environment. It combines local drug delivery and application of shorthigh voltage pulses, which permeabilize the plasma membrane by electroporation. Drug can enter only the cells with permeabilzed membrane. Recently, medical device CliniporatorTM for controlled electroporation was developed. Here, we present a web-application that extends the functionality of this medical device. The aim of the application is to collect, store and toallow the analysis of every ECT application using this medical device. The application helps transferring data collected by devčce during the electroporation process to the central database, and enables filling of medical records through the web forms. The application is based on technologies ASP, HTML, Flash, JavaScript, XML and others. The application main advantages are easy and rapid data access, scalability and independence of client computer operating system as well as easy application debugging and upgrading.
Keywords: neoplasms- drug therapy, drug delivery systems, elektroporation instrumentation
Published in DiRROS: 07.02.2024; Views: 214; Downloads: 53
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13. Influence of hydralazine on interstitial fluid pressure in experimental tumors - a preliminary study : Vpliv hydralazina na tlak medcelične tekočine v poskusnih tumorjihBlaž Podobnik, Damijan Miklavčič, 2000, original scientific article Abstract: Background. Interstitial fluid pressure (IFP) has been recognised as the most important obstacle in macromolecular drug delivery to solid tumors. Our interest was to reduce differentialy tumor IFP with respect to IFP in surrounding and normal tissues in order to increase drug delivery to tumors aswell to increase tumor blood flow and potentialy tumor tissue oxygenation. In this preliminary study we used hydralazine, a longacting arterial vasodilator. Materials and methods. Measurements of interstitial fluid pressure were performed in vivo on CBA mice bearing SAF tumors using wick-in-needle technigue. Altogether eleven measurements were obtained on different animals with tumors of different size. Results. IFP in tumors after hydralazine administration was significantly lower than initial values in corresponding tumors. On average tumor IFP decreased for 33 % from initial value. On the contrary, no change in IFP in normal tissue was observed after hydralazine administration. Also, after injection of physiological saline instead of hydralazine there was no change in IFP neither in tumors nor in muscle. The results of our preliminary study on the effect of hydralazine on IFP in SAF tumor model is in accordance to previously reported studies. The decrease in tumor IFP was only observed in tumors, but not in muscle and surrounding subcutis. Conclusion. Hydralazine is a vasodilator which is capable of decreasing tumor IFP, reproducibly and with favorably long lasting dynamics.
Keywords: sarcoma, experimental drug therapy, hydralazine, extracellular space, interstitial fluid pressure, manometry
Published in DiRROS: 23.01.2024; Views: 251; Downloads: 58
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16. Electrochemotherapy with bleomycin : The first clinical experience in malignant melanoma patientsZvonimir Rudolf, Borut Štabuc, Maja Čemažar, Damijan Miklavčič, Lojze Vodovnik, Gregor Serša, 1995, original scientific article Keywords: melanoma therapy, bleomycin, electric stimulation therapy
Published in DiRROS: 15.01.2024; Views: 254; Downloads: 56
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17. Improved therapeutic effect of electrochemotherapy with cisplatin by intratumoral drug administration and changing of electrode orientation for electropermeabilization on EAT tumor model in miceMaja Čemažar, Damijan Miklavčič, Lojze Vodovnik, Tomaž Jarm, Zvonimir Rudolf, Borut Štabuc, Tanja Čufer, Gregor Serša, 1995, original scientific article Keywords: neoplasmas, experimental therapy, cisplatin, electric stimulation therapy, cell membrane permeability
Published in DiRROS: 15.01.2024; Views: 195; Downloads: 57
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19. Elektrokemoterapija malignega melanomaGregor Serša, Borut Štabuc, Tanja Čufer, Boris Jančar, Damijan Miklavčič, Maja Čemažar, Zvonimir Rudolf, 1999, published scientific conference contribution Keywords: melanom, zdravljenje, bleomicin, cisplatin, električna stimulacija, elektrokemoterapija, elektroporacija, melanoma therapy, bleomycin, cisplatin, electric stimulation therapy, electrochemotherapy, electroporation
Published in DiRROS: 27.11.2023; Views: 233; Downloads: 76
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20. Gene electrotransfer of IL-2 and IL-12 plasmids effectively eradicated murine B16.F10 melanomaTilen Komel, Maša Omerzel, Simona Kranjc Brezar, Mariangela De Robertis, M. Mastrodonato, G. Scillitani, G. Pesole, Emanuella Signori, Gregor Serša, Maja Čemažar, 2021, original scientific article Abstract: Gene therapy has become an important approach for treating cancer, and electroporation represents a technology for introducing therapeutic genes into a cell. An example of cancer gene therapy relying on gene electrotransfer is the use of immunomodulatory cytokines, such as interleukin 2 (IL-2) and 12 (IL-12), which directly stimulate immune cells at the tumour site. The aim of our study was to determine the effects of gene electrotransfer with two plasmids encoding IL-2 and IL-12 in vitro and in vivo. Two different pulse protocols, known as EP1 (600 V/cm, 5 ms, 1 Hz, 8 pulses) and EP2 (1300 V/cm, 100 %s, 1 Hz, 8 pulses), were assessed in vitro for application in subsequent in vivo experiments. In the in vivo experiment, gene electrotransfer of pIL-2 and pIL-12 using the EP1 protocol was performed in B16.F10 murine melanoma. Combined treatment of tumours using pIL2 and pIL12 induced significant tumour growth delay and 71% complete tumour regression. Furthermore, in tumours coexpressing IL-2 and IL-12, increased accumulation of dendritic cells and M1 macrophages was obtained along with the activation of proinflammatory signals, resulting in CD4 + and CD8 + T-lymphocyte recruitment and immune memory development in the mice. In conclusion, we demonstrated high antitumour efficacy of combined IL-2 and IL-12 gene electrotransfer protocols in low-immunogenicity murine B16.F10 melanoma.
Keywords: gene therapy, gene electrotransfer, IL-12, immunotherapy, melanoma
Published in DiRROS: 23.09.2022; Views: 673; Downloads: 200
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