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1842. Optic nerve ultrasound for fluid status assessment in patients with severe preeclampsiaGabrijela Bržan Šimenc, Jana Ambrožič, Katja Prokšelj, Nataša Tul, Marta Cvijić, Tomislav Mirković, Helmut Karl Lackner, Miha Lučovnik, 2018, izvirni znanstveni članek Ključne besede: preeclampsia, fluid status, ocular ultrasound, optic nerve sheath diameter, lung ultrasound, comet tail (B-lines) sign
Objavljeno v DiRROS: 11.06.2024; Ogledov: 341; Prenosov: 198
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1843. Pharmacogenomic markers of glucorticoid responses in the initial phase of remission induction therapy in childhood acute lymphoblastic leukemiaVladimir Gasic, Branka Zukic, Biljana Stanković, Dragana Janić, Lidija Dokmanovic, Jelena Lazic, Nada Krstovski, Vita Dolžan, Janez Jazbec, Sonja Pavlovič, Nikola Kotur, 2018, izvirni znanstveni članek Ključne besede: pharmacogenomics, childhood ALL, glucocorticoids, glucocorticoid receptor gene, glutathione S-transferase genes, multidrug resistance 1 gene
Objavljeno v DiRROS: 11.06.2024; Ogledov: 337; Prenosov: 116
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1844. Localization patterns of cathepsins K and X and their predictive value in glioblastomaBarbara Breznik, Clara Limbaeck Stanic, Andrej Porčnik, Andrej Blejec, Miha Koprivnikar Krajnc, Roman Bošnjak, Janko Kos, Cornelis J. F. van Noorden, Tamara Lah Turnšek, 2018, izvirni znanstveni članek Ključne besede: cathepsins, glioblastoma, immunohistochemistry, patient survival, cancer stem cell niches
Objavljeno v DiRROS: 11.06.2024; Ogledov: 293; Prenosov: 196
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1845. Electrochemotherapy with bleomycin of different types of cutaneous tumours in a ferret (Mustela putorius furo)Joško Račnik, Tanja Švara, Marko Zadravec, Mitja Gombač, Maja Čemažar, Gregor Serša, Nataša Tozon, 2018, izvirni znanstveni članek Povzetek: Mast cell tumour, sebaceous gland adenoma, and less common squamous papilloma are skin tumours in ferrets (Mustela putorius furo), and early excisional surgery is usually the treatment of choice. The aim of our study was to investigate the effectiveness of electrochemotherapy (ECT), a new, minimally invasive non-surgical method, as first treatment option of different types of ferret skin tumours located on surgically difficult sites. Materials and methods A 5-year-old castrated male ferret with two cutaneous masses, presenting 4 months apart and a 7-year-old spayed female ferret with two cutaneous masses, that appeared simultaneously on two locations are presented. In the first patient, both masses were diagnosed as mast cell tumours, and in the second patient, squamous papilloma and sebaceous adenoma were diagnosed. One session of ECT with bleomycin injected intratumourally was applied in all tumours. Results Complete response (CR) of all tumours was obtained, without recurrence during observation period of 15 months after ECT for first tumour and 11 months after ECT of the tumour located on the right hock in first patient, and 8 months after treatment for the second patient. Conclusions In present study, ECT with bleomycin proved to be safe and effective against different cutaneous tumours in ferrets. Due of good results, low cost and relatively easy procedure, ECT could be the treatment of choice instead of surgery for the selected skin tumours in ferrets.
Objavljeno v DiRROS: 11.06.2024; Ogledov: 332; Prenosov: 214
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1846. In silico selection approach to develop DNA aptamers for a stem-like cell subpopulation of non-small lung cancer adenocarcinoma cell line A549Mateja Vidic, Tina Šmuc, Nikolaja Janež, Michael Blank, Tomaž Accetto, Jan Mavri, Isis Nascimento, Arthur A. Nery, Henning Ulrich, Tamara Lah Turnšek, 2018, izvirni znanstveni članek Objavljeno v DiRROS: 11.06.2024; Ogledov: 284; Prenosov: 153
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1847. Locoregional disease control after external beam radiotherapy in 91 patients with differentiated thyroid carcinoma and pT4 tumor stage : a single institution experienceNikola Bešić, Marta Dremelj, Gašper Pilko, 2018, izvirni znanstveni članek Povzetek: Locoregional recurrence is common in patients with locally advanced differentiated thyroid carcinoma (DTC). Our aim was to find out the rate of locoregional control of the disease after external beam radiotherapy (EBRT) of the neck and mediastinum in patients with DTC and pT4 tumor. Patients and methods Altogether 91 patients (47 males, 44 females, median age 61 years) with DTC had EBRT of the neck and mediastinum as part of the multimodal treatment of pT4 tumor (63 cases pT4a, 28 cases pT4b) from the year 1973 to 2015. Data on clinical factors, histopathology and recurrence were collected. Disease-free, disease-specific and overall survival was calculated. Results Median tumor size was 5 cm (range 1%30 cm). Out of 91 patients, 23 had distant and 38 regional metastases. A total or near-total thyroidectomy, lobectomy, subtotal thyroidectomy and lymph node dissection was performed in 70%, 14%, 2% and 30% of cases, respectively. Thirteen percent of patients were not treated with surgery. All patients had EBRT and 39 had chemotherapy. Radioiodine (RAI) ablation of thyroid remnant and RAI therapy was applied in 90% and 40% of cases, respectively. Recurrence was diagnosed in 29/64 patients without a persistent disease: locoregional and distant in 16 and 13 cases, respectively. Five-year and ten-year disease-free survival rate was 64% and 48%, respectively. Conclusions The majority of patients with DTC and pT4 tumors who were treated with EBRT of the neck and mediastinum region as part of multimodal treatment have long-lasting locoregional control of the disease.
Ključne besede: thyroid carcinoma, radiotherapy, survival, pathology
Objavljeno v DiRROS: 11.06.2024; Ogledov: 387; Prenosov: 118
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1848. Nuclear magnetic resonance metabolic fingerprint of bevacizumab in mutant IDH1 glioma cellsTanja Mesti, Nadia Bouchemal, Claire Banissi, Mohamed N. Triba, Carole Marbeuf-Gueye, Maja Čemažar, Laurence Le Moyec, Antoine F. Carpentier, Philippe Savarin, Janja Ocvirk, 2018, izvirni znanstveni članek Povzetek: Malignant gliomas are rapidly growing tumours that extensively invade the brain and have bad prognosis. Our study was performed to assess the metabolic effects of bevacizumab on the glioma cells carrying the IDH1 mutation, a mutation, associated with better prognosis and treatment outcome. Bevacizumab is known to inhibit tumour growth by neutralizing the biological activity of vascular endothelial growth factor (VEGF). However, the direct effects of bevacizumab on tumour cells metabolism remain poorly known. Materials and methods The immunoassay and MTT assay were used to assess the concentration of secreted VEGF and cell viability after bevacizumab exposure. Metabolomic studies on cells were performed using high resolution magic angle spinning spectroscopy (HRMAS). Results mIDH1-U87 cells secreted VEGF (13 ng/mL). Regardless, bevacizumab had no cytotoxic effect, even after a 72h exposure and with doses as high as 1 mg/mL. Yet, HRMAS analysis showed a significant effect of bevacizumab (0.1 mg/mL) on the metabolic phenotype of mIDH1-U87 cells with elevation of 2-hydroxyglutarate and changes in glutamine group metabolites (alanine, glutamate, glycine) and lipids (polyunsaturated fatty acids [PUFA], glycerophosphocholine, and phosphocholine). Conclusions In mIDH1-U87 cells, changes in glutamine group metabolites and lipids were identified as metabolic markers of bevacizumab treatment. These data support the possibility of a functional tricarboxylic acid cycle that runs in reductive manner, as a probable mechanism of action of bevacizumab in IDH1 mutated gliomas and propose a new target pathway for effective treatment of malignant gliomas.
Ključne besede: symptomatic pseudoprogression, atypical response, immunotherapy, lung cancer, idh1 mutation, malignant glioma, bevacizumab, metabolic fingerprint
Objavljeno v DiRROS: 11.06.2024; Ogledov: 324; Prenosov: 140
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1849. Ultrasonographic changes in the liver tumors as indicators of adequate tumor coverage with electric field for effective electrochemotherapyNina Boc, Ibrahim Edhemović, Bor Kos, Maja Marolt-Mušič, Erik Brecelj, Blaž Trotovšek, Maša Omerzel, Mihajlo Djokić, Damijan Miklavčič, Maja Čemažar, Gregor Serša, 2018, izvirni znanstveni članek Povzetek: The aim of the study was to characterize ultrasonographic (US) findings during and after electrochemotherapy of liver tumors to determine the actual ablation zone and to verify the coverage of the treated tumor with a sufficiently strong electric field for effective electrochemotherapy. Patients and methods. US findings from two representative patients that describe immediate and delayed tumor changes after electrochemotherapy of colorectal liver metastases are presented. Results. The US findings were interrelated with magnetic resonance imaging (MRI). Electrochemotherapy-treated tumors were exposed to electric pulses based on computational treatment planning. The US findings indicate immediate appearance of hyperechogenic microbubbles along the electrode tracks. Within minutes, the tumors became evenly hyperechogenic, and simultaneously, an oedematous rim was formed presenting as a hypoechogenic formation which persisted for several hours after treatment. The US findings overlapped with computed electric field distribution in the treated tissue, indicating adequate coverage of tumors with sufficiently strong electric field, which may predict an effective treatment outcome. Conclusions. US provides a tool for assessment of appropriate electrode insertion for intraoperative electrochemotherapy of liver tumors and assessment of the appropriate coverage of a tumor with a sufficiently strong electric field and can serve as predictor of the response of tumors.
Ključne besede: elctrochemotherapy, ultrasound, treatment plan, liver
Objavljeno v DiRROS: 11.06.2024; Ogledov: 409; Prenosov: 131
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1850. Primary debulking surgery versus primary neoadjuvant chemotherapy for high grade advanced stage ovarian cancer : comparison of survivalsBorut Kobal, Marco Noventa, Branko Cvjetičanin, Matija Barbič, Leon Meglič, Maruša Herzog, Giulia Bordi, Amerigo Vitagliano, Carlo Saccardi, Erik Škof, 2018, izvirni znanstveni članek Povzetek: The aim of the study was to analyze the overall survival (OS) and progression free survival (PFS) of patients with high grade and advanced stage epithelial ovarian cancer (EOC) with at least 60 months of follow-up treated in a single gynecologic oncology institute. We compared primary debulking surgery (PDS) versus neoadjuvant chemotherapy plus interval debulking surgery (NACT + IDS) stratifying data based on residual disease with the intent to identify the rationale for therapeutic option decision and the role of laparoscopic evaluation of resectability for that intention. Patients and methods. This is observational retrospective study on consecutive patients with diagnosis of high grade and International Federation of Gynecology and Obstetrics (FIGO) stage III/IV EOC referred to our center between January 2008 and May 2012. We selected only patients with a follow-up of at least 60 months. Primary endpoint was to compare PDS versus NACT + IDS in term of progression free survival (PFS) and overall survival (OS). Secondary endpoints were PFS and OS stratifying data according to residual disease after surgery in patients receiving PDS versus NACT + IDS. Finally, through Cox hazards models, we tested the prognostic value of different variables (patient age at diagnosis, residual disease after debulking, American Society of Anesthesiologists (ASA) stage, number of adjuvantchemotherapy cycles) for predicting OS. Results. A total number of 157 patients were included in data analysis. Comparing PDS arm (108 patients) and NACT + IDS arm (49 patients) we found no significant differences in term of OS (41.3 versus 34.5 months, respectively) and PFS (17.3 versus 18.3 months, respectively). According to residual disease we found no significant differences in term of OS between NACT + IDS patients with residual disease = 0 and PDS patients with residual disease = 0 or residual disease = 1, as well as no significant differences in PFS were found comparing NACT + IDS patients with residual disease = 0 and PDS patients with residual disease = 0; contrarily, median PFS resulted significantly lower in PDS patients receiving optimal debulking (residual disease = 1) in comparison to NACT + IDS patients receiving complete debulking (residual disease = 0). PDS arm was affected by a significant higher rate of severe post-operative complications (grade 3 and 4). Diagnostic laparoscopy before surgery was significantly associated with complete debulking. Conclusions. We confirm previous findings concerning the non-superiority of NACT + IDS compared to PDS for the treatment of EOC, even if NACT + IDS treatment was associated with significant lower rate of post-operative complications. On the other hand, selecting patients for NACT + IDS, based on laparoscopic evaluation of resectabilty prolongs the PFS and does not worse the OS compared to the patients not completely debulked with PDS.
Ključne besede: epithelial ovarian cancer, advanced stage, primary debulking surgery, interval debulking surgery
Objavljeno v DiRROS: 11.06.2024; Ogledov: 432; Prenosov: 193
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