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Träfflista för sökning "WFRF:(Hosseini Abolfazl) ;pers:(Wiklund Peter)"

Sökning: WFRF:(Hosseini Abolfazl) > Wiklund Peter

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1.
  • Ibarra, Cristian, et al. (författare)
  • BCG-induced cytokine release in bladder cancer cells is regulated by Ca2+ signaling
  • 2019
  • Ingår i: Molecular Oncology. - : WILEY. - 1574-7891 .- 1878-0261. ; 13:2, s. 202-211
  • Tidskriftsartikel (refereegranskat)abstract
    • Bacillus Calmette-Guerin (BCG) is widely used in the clinic to effectively treat superficial urinary bladder cancer. However, a significant proportion of patients who fail to respond to BCG risk cystectomy or death. Though more than 3 million cancer treatments with BCG occur annually, surprisingly little is known about the initial signaling cascades activated by BCG. Here, we report that BCG induces a rapid intracellular Ca2+ (calcium ion) signal in bladder cancer cells that is essential for activating the transcription factor nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kappa B) and for synthesizing and secreting proinflammatory cytokines, including interleukin 8 (IL-8). A similar Ca2+ response was observed when cells were exposed to the supernatant of BCG. Studying cellular molecular mechanisms involved in the BCG signaling event, we found pivotal roles for phospholipase C and the Toll-like receptor 4. Further assessment revealed that this signaling pathway induces synthesis of IL-8, whereas exocytosis appeared to be controlled by global Ca2+ signaling. These results shed new light on the molecular mechanisms underlying BCG treatment of bladder cancer, which can help in improving therapeutic efficacy and reducing adverse side effects.
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2.
  • Collins, Justin, et al. (författare)
  • Live streaming of robotic surgery from leading educational centres enables a global approach to surgical teaching
  • 2016
  • Ingår i: Journal of Urology. - : Ovid Technologies (Wolters Kluwer Health). - 0022-5347 .- 1527-3792. ; 195:4, s. E116-E116
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • Following recently published EAU Policy on Live Surgical Events (LSE's) it is assured that live surgery will be ongoing at conferences in the immediate future. However, the panel reached >80% consensus view that performing at a home institution may be safer. The committee also identified issues with a ‘travelling surgeon’ performing complex surgery in an unfamiliar environment with a surgical team that is not experienced with the intricacies of surgeons techniques. LSE's from home institutions remove or minimize these negative aspects.
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3.
  • Hosseini, Abolfazl, et al. (författare)
  • Enhanced formation of nitric oxide in bladder carcinoma in situ and in BCG treated bladder cancer
  • 2006
  • Ingår i: Nitric oxide. - Orlando, Fla. : Academic Press. - 1089-8603 .- 1089-8611. ; 15:4, s. 337-343
  • Tidskriftsartikel (refereegranskat)abstract
    • The purpose of the study was to analyze endogenous nitric oxide (NO) formation and NO-synthase (NOS) gene expression in the urinary bladder from patients with urinary bladder cancer and to investigate the relationship between local NO formation, treatment with Bacillus Calmette Guerin (BCG) and clinical stage in bladder cancer patients. One hundred and three patients with bladder cancer were studied. Endogenous formation of NO was measured in 72 patients, including 6 patients with BCG treated bladder cancer and 6 tumor free control subjects. iNOS expression was analyzed at transcriptional and protein level in biopsies from 31 patients with bladder cancer by real time polymerase chain reaction (PCR) and Western blot (WB), respectively. Three patients in this group had received BCG treatment. Eight biopsies from normal bladder served as control for PCR and WB analysis. Patients with carcinoma in situ (CIS) had higher iNOS expression (p<0.01) and NO formation (p<0.01) than control subjects and patients with papillary tumors without concomitant CIS. Markedly increased iNOS expression (p<0.05) and NO formation (p<0.001) were also found in patients treated with BCG as compared to the other groups. In conclusion, the presence of elevated NO concentration and iNOS expression in the urinary bladder from BCG treated patients and patients with CIS further supports the notion that NO may be an important factor in bladder cancer biology and that the BCG effect on superficial bladder cancer may partly be due to stimulation of local NO formation.
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5.
  • Ranti, Daniel, et al. (författare)
  • Surveillance for Nonmuscle Invasive Bladder Cancer: Identifying the Point of Diminishing Returns
  • 2023
  • Ingår i: UROLOGY. - 0090-4295 .- 1527-9995. ; 181, s. 84-91
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE To characterize first and second recurrence patterns using 26 years of cohort-level follow-up and microsimulation modeling.METHODS Patients diagnosed with nonmuscle-invasive bladder cancer in Stockholm County between 1995 and 1996 were included. Clinical, pathological, and longitudinal follow-up data were gathered. Logistic regressions, Kaplan Meier curves, and Cox proportional hazards models were run to generate assumptions for a microsimulation model, simulating first and second recurrence and progression for 10,000 patients.RESULTS Three hundred eighty-six patients were included: 67.4% were male; > 50% were TaLG; and 37.5% were American Urological Association high-risk. Median time to recurrence was 300 days. Three patients had missing data. Cohort follow-up has been carried out for 26 years. For simulated firstrecurrences, low-risk patients recurred at 56.6% over 15 years of follow-up, with 2.2% muscleinvasive (MI) progression; intermediate-risk patients recurred at 62.8%, with 4.3% MI progression; high-risk patients recurred at 48.7% over 15 years, with MI progression at 14.3%. For second recurrences, 70.7%, 75.7%, and 84.7% of low, medium, and high-risk patients recurred. No patients were seen to have first recurrences after 9 years, with low, but notable, rates beyond 5 years.CONCLUSION These data suggest that low-, intermediate-, and high-risk patients without recurrence at 5 years may be potentially transitioned to less invasive monitoring.
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