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Genomes and GenesSpecies | Dirk VordermarkSummaryCountry: Germany Publications
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Publications
3-D reconstruction of anterior mantle-field techniques in Hodgkin's disease survivors: doses to cardiac structuresDirk Vordermark
Dept of Radiation Oncology, University of Wurzburg, Germany
Radiat Oncol 1:10. 2006..Dose-volume histograms (DVHs) were generated for these heart structures and results compared between techniques...
Glioblastoma multiforme with oligodendroglial component (GBMO): favorable outcome after post-operative radiotherapy and chemotherapy with nimustine (ACNU) and teniposide (VM26)Dirk Vordermark
Dept of Radiation Oncology, University of Wurzburg, Wurzburg, Germany
BMC Cancer 6:247. 2006....
Endogenous markers of tumor hypoxia predictors of clinical radiation resistance?Dirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Germany
Strahlenther Onkol 179:801-11. 2003..Recently, the immunohistochemical detection of proteins involved in the "hypoxic response" of tumor cells has been discussed as a method to estimate hypoxia in clinical tumor specimens...
Glucose requirement for hypoxic accumulation of hypoxia-inducible factor-1alpha (HIF-1alpha)Dirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Josef Schneider Str 11, 97080 Wurzburg, Germany
Cancer Lett 230:122-33. 2005..This glucose effect was confirmed in a hypoxia-responsive-element (HRE)/enhanced-green-fluorescent-protein (EGFP) reporter assay in transfected HT 1080 cells and possibly explains a lack of HIF-1alpha protein in hypoxic tumor cells...
Patterns of care in the radiotherapy of prostate cancer in Northern Bavaria 1998-2000Dirk Vordermark
Department of Radiation Oncology, University of Wuerzburg, Josef Schneider Strasse 11, 97080 Wurzburg, Germany
Strahlenther Onkol 183:314-20. 2007..A patterns-of-care study of radiotherapy (RT) in prostate cancer was performed in Northern Bavaria, Germany, to characterize patient selection, treatment strategies and outcome for the time period 1998-2000...
Hypofractionated stereotactic re-irradiation: treatment option in recurrent malignant gliomaDirk Vordermark
Dept of Radiation Oncology, University of Wurzburg, Germany
BMC Cancer 5:55. 2005..Hypofractionated stereotactic radiotherapy (HFSRT) is one salvage treatment option in previously irradiated patients with recurrent malignant glioma. We analyzed the results of HFSRT and prognostic factors in a single-institution series...
Local control in 118 consecutive high-risk breast cancer patients treated with breast-conserving therapyDirk Vordermark
Department of Radiation Oncology, University of Wurzburg, 97080 Wurzburg, Germany
Oncol Rep 18:1335-9. 2007..Younger patients and patients who received adjuvant chemotherapy (due to the presence of histopathological risk factors) were at increased risk of in-breast recurrence and should be considered for intensified local treatment...
Prospective evaluation of quality of life after permanent prostate brachytherapy with I-125: importance of baseline symptoms and of prostate-V150Dirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Germany
Radiother Oncol 91:217-24. 2009..Detailed knowledge of quality of life (QoL) after permanent I-125 brachytherapy may aid in counselling patients with early-stage prostate cancer...
Plasma osteopontin levels in patients with head and neck cancer and cervix cancer are critically dependent on the choice of ELISA systemDirk Vordermark
Dept of Radiation Oncology, University of Wurzburg, Germany
BMC Cancer 6:207. 2006..The clinical introduction of plasma OPN measurements requires the availability of a reliable enzyme-linked immunosorbence assay (ELISA)...
3-D conformal treatment of prostate cancer to 74 Gy vs. high-dose-rate brachytherapy boost: a cross-sectional quality-of-life surveyDirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Germany
Acta Oncol 45:708-16. 2006..Dose escalation in prostate cancer by either 3-DC boost to 74 Gy or HDR brachytherapy boost appears to result in similar HRQOL profiles...
Cell type-specific association of hypoxia-inducible factor-1 alpha (HIF-1 alpha) protein accumulation and radiobiologic tumor hypoxiaDirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Wurzburg, Germany
Int J Radiat Oncol Biol Phys 58:1242-50. 2004..To explain this discrepancy, we studied the in vitro conditions under which HIF-1 alpha protein accumulates...
Oxygen-dependent regulation of NDRG1 in human glioblastoma cells in vitro and in vivoHarun M Said
Department of Radiation Oncology, University of Wurzburg, D 97080 Wurzburg, Germany
Oncol Rep 21:237-46. 2009....
Rapid detection of the hypoxia-regulated CA-IX and NDRG1 gene expression in different glioblastoma cells in vitroHarun M Said
Department of Radiation Oncology, University of Wurzburg, 97080 Wurzburg, Germany
Oncol Rep 20:413-9. 2008....
Effects of HIF-1 inhibition by chetomin on hypoxia-related transcription and radiosensitivity in HT 1080 human fibrosarcoma cellsAdrian Staab
Department of Radiation Oncology, University of Wurzburg, 97080 Wurzburg, Germany
BMC Cancer 7:213. 2007..We investigated whether targeting of HIF-1 using chetomin, a disrupter of the interaction of HIF-1 with the transcriptional coactivator p300, influences the radiosensitivity of hypoxic HT 1080 human fibrosarcoma cells...
Expression patterns of the hypoxia-related genes osteopontin, CA9, erythropoietin, VEGF and HIF-1alpha in human glioma in vitro and in vivoHarun M Said
Department of Radiation Oncology, University of Wurzburg, Germany
Radiother Oncol 83:398-405. 2007....
Small interfering RNA targeting HIF-1α reduces hypoxia-dependent transcription and radiosensitizes hypoxic HT 1080 human fibrosarcoma cells in vitroAdrian Staab
Department of Radiation Oncology, University of Wurzburg, Wurzburg, Germany
Strahlenther Onkol 187:252-9. 2011....
Distinct effects of rectum delineation methods in 3D-conformal vs. IMRT treatment planning of prostate cancerMatthias Guckenberger
Department of Radiation Oncology, University of Wuerzburg, Josef Schneider Str, 11, 97080 Wuerzburg, Germany
Radiat Oncol 1:34. 2006..The dose distribution to the rectum, delineated as solid organ, rectal wall and rectal surface, in 3D conformal (3D-CRT) and intensity-modulated radiotherapy treatment (IMRT) planning for localized prostate cancer was evaluated...
Expression analysis of the autosomal recessive primary microcephaly genes MCPH1 (microcephalin) and MCPH5 (ASPM, abnormal spindle-like, microcephaly associated) in human malignant gliomasCarsten Hagemann
Department of Neurosurgery, University of Wurzburg, D 97080 Wurzburg, Germany
Oncol Rep 20:301-8. 2008..Our findings are significant as the expression of ASPM may be used as a marker for glioma malignancy and represents a potential therapeutic target...
GAPDH is not regulated in human glioblastoma under hypoxic conditionsHarun M Said
University of Wurzburg, Dept of Radiation Oncology, Germany
BMC Mol Biol 8:55. 2007..HIF-1alpha protein regulation under hypoxia was also determined on mRNA level in vitro in GaMG and on protein level in U251, U373 and GaMG cells...
Does intensity modulated radiation therapy (IMRT) prevent additional toxicity of treating the pelvic lymph nodes compared to treatment of the prostate only?Matthias Guckenberger
Department of Radiation Oncology, Julius Maximilians University, Wuerzburg, Germany
Radiat Oncol 3:3. 2008..To evaluate the risk of rectal, bladder and small bowel toxicity in intensity modulated radiation therapy (IMRT) of the prostate only compared to additional irradiation of the pelvic lymphatic region...
Distinct patterns of hypoxic expression of carbonic anhydrase IX (CA IX) in human malignant glioma cell linesHarun M Said
Department of Radiation Oncology, University of Wuerzburg, Josef Schneider Strasse 11, 97080 Wuerzburg, Germany
J Neurooncol 81:27-38. 2007..Therefore, immunohistochemical CA IX staining in human malignant glioma specimens can result from low oxygen concentrations or constitutive, oncogene-related, overexpression both of which may be prognostically relevant...
Precision required for dose-escalated treatment of spinal metastases and implications for image-guided radiation therapy (IGRT)Matthias Guckenberger
Department of Radiation Oncology, University of Wuerzburg, Wuerzburg, Germany
Radiother Oncol 84:56-63. 2007..To evaluate the precision required in dose-escalated IMRT treatment of spinal metastases and paraspinal tumors...
Influence of rectum delineation (rectal volume vs. rectal wall) on IMRT treatment planning of the prostateMatthias Guckenberger
Department of Radiation Oncology, University of Wuerzburg, Wuerzburg, Germany
Strahlenther Onkol 182:721-6. 2006..To evaluate the delineation of either the rectal volume (RV) or the rectal wall (RW) in intensity-modulated radiotherapy (IMRT) for prostate cancer: influence on dose distribution to the targets and organs at risk (OARs) was investigated...
Modulation of carbonic anhydrase 9 (CA9) in human brain cancerHarun M Said
Department of Radiation, Oncology, University of Wurzburg, Josef Schneider Strasse 11, Wurzburg, Germany
Curr Pharm Des 16:3288-99. 2010....
Cardiac magnetic resonance imaging findings in 20-year survivors of mediastinal radiotherapy for Hodgkin's diseaseWolfram Machann
Department of Radiology, University of Wurzburg, Wurzburg, Germany
Int J Radiat Oncol Biol Phys 79:1117-23. 2011..Cardiac magnetic resonance imaging (MRI) permits excellent quantification of cardiac function and identification of localized myocardial defects and has now been applied to a group of 20-year Hodgkin's disease survivors...
RAF expression in human astrocytic tumorsCarsten Hagemann
Department of Neurosurgery, Tumorbiology Laboratory, University of Wurzburg, D 97080 Wurzburg, Germany
Int J Mol Med 23:17-31. 2009..Our data indicate that RAF proteins might be valuable targets for small molecule therapies. However, initially specific functions of RAF during tumorigenesis have to be elucidated...
Reliability of the bony anatomy in image-guided stereotactic radiotherapy of brain metastasesMatthias Guckenberger
Department of Radiation Oncology, Julius Maximilians University, Wuerzburg, Germany
Int J Radiat Oncol Biol Phys 69:294-301. 2007..To evaluate whether the position of brain metastases remains stable between planning and treatment in cranial stereotactic radiotherapy (SRT)...
Characterization of carbonic anhydrase IX (CA IX) as an endogenous marker of chronic hypoxia in live human tumor cellsDirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Josef Schneider Str, 97080 Wurzburg, Germany
Int J Radiat Oncol Biol Phys 61:1197-207. 2005....
Inhibition of N-Myc down regulated gene 1 in in vitro cultured human glioblastoma cellsHarun M Said
Harun M Said, Buelent Polat, Mathias Guckenberger, Adrian Staab, Astrid Katzer, Michael Flentje, Dirk Vordermark, Department of Radiation Oncology, University of Wuerzburg, 97080 Wurzburg, Germany
World J Clin Oncol 3:104-10. 2012....
Modulation of glucose metabolism inhibits hypoxic accumulation of hypoxia-inducible factor-1alpha (HIF-1alpha)Adrian Staab
Department of Radiotherapy, University of Wuerzburg, Germany
Strahlenther Onkol 183:366-73. 2007..The aim of this study was to investigate the underlying mechanism of this effect...
Association of anorectal dose-volume histograms and impaired fecal continence after 3D conformal radiotherapy for carcinoma of the prostateDirk Vordermark
Department of Radiation Oncology, , Josef-Schneider-Street 11, , Germany
Radiother Oncol 69:209-14. 2003..CONCLUSIONS: Excluding the inferior part of the anal canal from the treated volume in 3D conformal therapy for carcinoma of the prostate appears to be a promising strategy to prevent radiation-induced fecal incontinence...
Response of the plasma hypoxia marker osteopontin to in vitro hypoxia in human tumor cellsHarun M Said
Department of Radiation Oncology, , , Germany
Radiother Oncol 76:200-5. 2005..OPN mRNA response to hypoxia and reoxygenation was very heterogeneous between cell lines. CONCLUSION: Reoxygenation rather than hypoxia appears to induce OPN secretion from human tumor cells in a cell-type specific manner...
Steep dose gradients for simultaneous integrated boost IMRTKlaus Bratengeier
Universitat Wurzburg, Klinik und Poliklinik für Strahlentherapie, Josef Schneider Str 11, D 97080 Wurzburg, Germany
Z Med Phys 19:129-35. 2009..The segment numbers were lower or equal--with better sparing of the surrounding tissue. In summary, it was demonstrated that 2-Step IMRT was able to achieve steep dose gradients for SIB constellations...
Target motion measurement without implanted markers and its validation by comparison with manually obtained dataLucia Vences
, , Josef-Schneider-Str. 11, , Germany
Med Phys 32:3431-9. 2005..The results of this novel method were validated by comparison with manually determined target position...
Magnitude and clinical relevance of translational and rotational patient setup errors: a cone-beam CT studyMatthias Guckenberger
Department of Radiation Oncology, University of Wuerzburg, Wuerzburg, Germany
Int J Radiat Oncol Biol Phys 65:934-42. 2006..To establish volume imaging using an on-board cone-beam CT (CB-CT) scanner for evaluation of three-dimensional patient setup errors...
Chronic fatigue after radiotherapy for carcinoma of the prostate: correlation with anorectal and genitourinary functionDirk Vordermark
Department of Radiation Oncology, , Josef-Schneider-Strasse 11, Germany
Radiother Oncol 62:293-7. 2002..2+/-1.8 and 5%, respectively). Fatigue was significantly correlated with fecal incontinence and urinary symptoms, suggesting an association of chronic fatigue and late radiation toxicity in carcinoma of the prostate...
Adverse effect of a distended rectum in intensity-modulated radiotherapy (IMRT) treatment planning of prostate cancerMatthias Guckenberger
Department of Radiation Oncology, University of Wuerzburg, Germany
Radiother Oncol 79:59-64. 2006....
Egr-1 is not upregulated in response to hypoxic and oxygenation conditions in human glioblastoma in vitroHarun M Said
Department of Radiation Oncology, University of W rzburg, 97080 W rzburg, Germany
Mol Med Report 2:757-63. 2009....
Hypoxia-specific targets in cancer therapy: role of splice variantsDirk Vordermark
Department of Radiation Oncology, Martin Luther University Halle Wittenberg, Germany
BMC Med 8:45. 2010..This preliminary study addresses the possibility that specific targeting of individual isoforms resulting from alternative splicing may play a role in HIF-1-directed treatment approaches...
Absence of GAPDH regulation in tumor-cells of different origin under hypoxic conditions in - vitroHarun M Said
Department of Radiation Oncology, Faculty of Medicine, , , Germany
BMC Res Notes 2:8. 2009..The results confirm our previous findings in human glioblastoma that this gene is not an attractive target for tumor therapeutic approaches because of the lack of GAPDH regulation under hypoxia...
Impaired sphincter function and good quality of life in anal carcinoma patients after radiotherapy: a paradox?Dirk Vordermark
Department of Radiation Oncology, University of Wurzburg, Germany
Front Radiat Ther Oncol 37:132-9. 2002
The relationship between belly board position and patient anatomy and its influence on dose-volume histogram of small bowel for postoperative radiotherapy of rectal cancerOliver Koelbl
Department of Radiotherapy, University of Wuerzburg, Josef-Schneider-Strasse 11, 97080 Wuerzburg, Germany
Radiother Oncol 67:345-9. 2003....
Evaluation of hypoxia-inducible factor-1alpha (HIF-1alpha) as an intrinsic marker of tumor hypoxia in U87 MG human glioblastoma: in vitro and xenograft studiesDirk Vordermark
Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
Int J Radiat Oncol Biol Phys 56:1184-93. 2003..High protein levels have been linked to poor prognosis in several tumor types, and HIF-1alpha has been suggested as a potential endogenous marker of tumor hypoxia and associated radioresistance...
Ten years of progress in radiation oncologyDirk Vordermark
Department of Radiation Oncology, Martin Luther University Halle Wittenberg, Halle Saale, Germany
BMC Cancer 11:503. 2011....
Secretory activity and cell cycle alteration of alveolar type II cells in the early and late phase after irradiationJochen Willner
Department of Radiotherapy, University of Wuerzburg, Wuerzburg, Germany
Int J Radiat Oncol Biol Phys 55:617-25. 2003..We analyzed the secretory function and proliferation parameters of alveolar type II cells in the early (until 24 h) and late phase (1-5 weeks) after irradiation (RT) in vitro and in vivo...
Patient information in radiation oncology: a cross-sectional pilot study using the EORTC QLQ-INFO26 moduleJohannes Adler
Department of Radiation Oncology, Martin Luther University Halle Wittenberg, Halle Saale, Germany
Radiat Oncol 4:40. 2009..The purpose of the present study was to assess perception of information in cancer patients during radiotherapy as well as media preferences and specifically the utilization of the internet...
Quality of training in radiation oncology in Germany. Results of a 2006 surveyRobert Semrau
Department of Radiation Oncology, University Hospital Cologne, Germany
Strahlenther Onkol 184:239-44. 2008..To evaluate residents' satisfaction with their training in radiation oncology, the first nationwide survey was done in 2006. Results were presented at the 2006 annual meeting of the German Society of Radiation Oncology (DEGRO)...
Radiation therapy and internet - what can patients expect? homepage analysis of german radiotherapy institutionsStefan Janssen
Department of Radiation Oncology, Medical School Hannover, Hannover, Germany
Strahlenther Onkol 186:700-4. 2010..There is a confusing amount of medical websites with a great diversity of quality. Websites of radiotherapy institutions could offer a safe and an easy-to-control way to assist patients' requests...
Temporal changes in quality of life (QoL) of patients with primary brain tumors: raw QoL data from a randomized trial as reference for future studiesDirk Vordermark
J Clin Oncol 26:2061-2; author reply 2062. 2008
Radiotherapy of prostate cancer with multileaf collimators (MLCs) optimization of the undulating dose distribution at the MLC edgeOliver Koelbl
Department of Radiotherapy, University Hospital Regensburg, Franz Josef Strauss Allee 11, 93053 Regensburg, Germany
Strahlenther Onkol 181:108-12. 2005..A technical modification for radiotherapy of prostate cancer is presented to smooth the scalloped dose pattern that occurs at treatment field edge, when a multileaf collimator (MLC) has been used...
An experimental evaluation of three preoperative radiation regimens for resectable rectal cancerGenc Basha
Department of Abdominal Surgery, University Hospital Gasthuisberg, Katholieke Universiteit Leuven, Belgium
Ann Surg Oncol 9:292-7. 2002..CONCLUSIONS: A shorter treatment time offered the best therapeutic efficacy. The schedule involving two daily fractions of 3 Gy over 5 days should be less toxic than 5 x 5 Gy and may therefore provide a therapeutic advantage...
Lack of survival benefit after stereotactic radiosurgery boost for glioblastoma multiforme: randomized comparison of stereotactic radiosurgery followed by conventional radiotherapy with carmustine to conventional radiotherapy with carmustine for patients Dirk Vordermark
Int J Radiat Oncol Biol Phys 62:296-7; author reply 297. 2005
In regard to Kapp et al.: experience with split-course external beam irradiation +/- chemotherapy and integrated (192)Ir high-dose-rate brachytherapy in the treatment of primary carcinomas of the anal canal. IJROBP 2001;49:997--1005Dirk Vordermark
Int J Radiat Oncol Biol Phys 52:580-1. 2002
Significance of hypoxia in malignant glioma. Re: Evans et al. Hypoxia is important in the biology and aggression of human glial brain tumors. Clin Cancer Res 2004;10:8177-84Dirk Vordermark
Clin Cancer Res 11:3966-7; author reply 3967-8. 2005
Cardiac toxicity of mediastinal radiotherapy: which are the critical structures?Dirk Vordermark
J Clin Oncol 23:3634-6; author reply 3636. 2005
Immunohistochemical detection of osteopontin in advanced head-and-neck cancer: prognostic role and correlation with oxygen electrode measurements, hypoxia-inducible-factor-1alpha-related markers, and hemoglobin levelsMatthias Bache
Department of Radiotherapy, Martin-Luther-University Halle-Wittenberg, Halle, Germany
Int J Radiat Oncol Biol Phys 66:1481-7. 2006..When the results of OPN, HIF-1alpha, and CA IX immunohistochemistry are combined into a hypoxic profile, a strong and statistically significant impact on overall survival is found...
Prophylactic radiotherapy for glioblastoma in the elderlyDirk Vordermark
N Engl J Med 357:195-6; author reply 196. 2007
Skin-sparing intensity-modulated radiotherapy of the breastDirk Vordermark
J Clin Oncol 26:3292; author reply 3292-3. 2008
Transperineal injection of hyaluronic acid in anterior perirectal fat to decrease rectal toxicity from radiation delivered with intensity-modulated brachytherapy or EBRT for prostate cancer patients: in regard to Prada et al. (Int J Radiat Oncol Biol PhysDirk Vordermark
Int J Radiat Oncol Biol Phys 71:316-7. 2008
Quality of life and satisfaction with outcome among prostate-cancer survivorsDirk Vordermark
N Engl J Med 359:201; author reply 201-2. 2008
Potential and limitations of intensity-modulated radiotherapy in anal cancerDirk Vordermark
J Clin Oncol 26:688; author reply 688-9. 2008
In regard to DAI et al.: inhibition of hypoxia inducible factor 1alpha causes oxygen-independent cytotoxicity and induces p53 independent apoptosis in glioblastoma cells. IJROBP 2003;55:1027-1036)Dirk Vordermark
Int J Radiat Oncol Biol Phys 57:1196. 2003
Immunohistochemical detection of HIF-1alpha and CAIX in advanced head-and-neck cancer. Prognostic role and correlation with tumor markers and tumor oxygenation parametersMatthias Kappler
Department of Radiotherapy, Martin Luther University of Halle Wittenberg, Germany
Strahlenther Onkol 184:393-9. 2008..Furthermore, the association of these hypoxia markers with tumor markers or tumor oxygenation parameters is of importance for understanding the relationship between the different factors...
Similar radiation sensitivities of acutely and chronically hypoxic cells in HT 1080 fibrosarcoma xenograftsDirk Vordermark
Department of Radiation Oncology, Division of Radiation and Cancer Biology, Stanford University School of Medicine, CCSR-South, Room 1255, 269 Campus Drive, Stanford, California 94305-5152, USA
Radiat Res 159:94-101. 2003..We therefore conclude that, at least in this tumor model, the radiation sensitivity of chronically hypoxic cells is similar to that of the acutely hypoxic cells...
Expression of hypoxia-inducible factor-1alpha in oligodendrogliomas: its impact on prognosis and on neoangiogenesisDirk Vordermark
Cancer 94:2317-8; author reply 2318-9. 2002
Avoiding bias in the prospective evaluation of patients with brain metastasesDirk Vordermark
J Clin Oncol 25:4023; author reply 4024-5. 2007
Quality of life after treatment for prostate cancer: no difference between surgery and radiotherapy?Dirk Vordermark
J Clin Oncol 21:4655; author reply 4655-6. 2003
