9 results on '"Tränka, Christopher"'
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2. Dissektionen der extrakraniellen hirnversorgenden Arterien
- Author
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Engelter, Stefan, primary, Lyrer, Philippe, additional, and Tränka, Christopher, additional
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- 2022
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3. Mechanical Thrombectomy Versus Best Medical Treatment in the Late Time Window in Non-DEFUSE-Non-DAWN Patients: A Multicenter Cohort Study
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Dittrich, Tolga D; https://orcid.org/0000-0002-9987-3631, Sporns, Peter B; https://orcid.org/0000-0002-3028-0539, Kriemler, Lilian F, Rudin, Salome, Nguyen, Anh; https://orcid.org/0000-0002-9343-8276, Zietz, Annaelle; https://orcid.org/0000-0002-4362-2497, Polymeris, Alexandros A; https://orcid.org/0000-0002-9475-2208, Tränka, Christopher, Thilemann, Sebastian; https://orcid.org/0000-0002-2735-0794, Wagner, Benjamin; https://orcid.org/0000-0001-9330-1790, Altersberger, Valerian L; https://orcid.org/0000-0002-0610-9328, Piot, Ines; https://orcid.org/0000-0001-8502-7453, Barinka, Filip; https://orcid.org/0000-0002-5823-0656, Müller, Susanne; https://orcid.org/0000-0002-5638-722X, Hänsel, Martin; https://orcid.org/0000-0001-9300-1130, Gensicke, Henrik; https://orcid.org/0000-0002-0949-2422, Engelter, Stefan T; https://orcid.org/0000-0003-3855-6234, Lyrer, Philippe A; https://orcid.org/0000-0002-1435-1114, Sutter, Raoul; https://orcid.org/0000-0002-6575-356X, Nickel, Christian H, Katan, Mira; https://orcid.org/0000-0002-9265-8066, Peters, Nils, Kulcsár, Zsolt; https://orcid.org/0000-0002-6805-5150, Karwacki, Grzegorz M; https://orcid.org/0000-0001-5963-6220, Pileggi, Marco; https://orcid.org/0000-0002-7691-8999, Cereda, Carlo; https://orcid.org/0000-0002-6479-1476, Wegener, Susanne; https://orcid.org/0000-0003-4369-7023, Bonati, Leo H; https://orcid.org/0000-0003-1163-8133, Fischer, Urs; https://orcid.org/0000-0003-0521-4051, Psychogios, Marios; https://orcid.org/0000-0002-0016-414X, et al, Dittrich, Tolga D; https://orcid.org/0000-0002-9987-3631, Sporns, Peter B; https://orcid.org/0000-0002-3028-0539, Kriemler, Lilian F, Rudin, Salome, Nguyen, Anh; https://orcid.org/0000-0002-9343-8276, Zietz, Annaelle; https://orcid.org/0000-0002-4362-2497, Polymeris, Alexandros A; https://orcid.org/0000-0002-9475-2208, Tränka, Christopher, Thilemann, Sebastian; https://orcid.org/0000-0002-2735-0794, Wagner, Benjamin; https://orcid.org/0000-0001-9330-1790, Altersberger, Valerian L; https://orcid.org/0000-0002-0610-9328, Piot, Ines; https://orcid.org/0000-0001-8502-7453, Barinka, Filip; https://orcid.org/0000-0002-5823-0656, Müller, Susanne; https://orcid.org/0000-0002-5638-722X, Hänsel, Martin; https://orcid.org/0000-0001-9300-1130, Gensicke, Henrik; https://orcid.org/0000-0002-0949-2422, Engelter, Stefan T; https://orcid.org/0000-0003-3855-6234, Lyrer, Philippe A; https://orcid.org/0000-0002-1435-1114, Sutter, Raoul; https://orcid.org/0000-0002-6575-356X, Nickel, Christian H, Katan, Mira; https://orcid.org/0000-0002-9265-8066, Peters, Nils, Kulcsár, Zsolt; https://orcid.org/0000-0002-6805-5150, Karwacki, Grzegorz M; https://orcid.org/0000-0001-5963-6220, Pileggi, Marco; https://orcid.org/0000-0002-7691-8999, Cereda, Carlo; https://orcid.org/0000-0002-6479-1476, Wegener, Susanne; https://orcid.org/0000-0003-4369-7023, Bonati, Leo H; https://orcid.org/0000-0003-1163-8133, Fischer, Urs; https://orcid.org/0000-0003-0521-4051, Psychogios, Marios; https://orcid.org/0000-0002-0016-414X, and et al
- Abstract
Background: We assessed the efficacy and safety of mechanical thrombectomy (MT) in adult stroke patients with anterior circulation large vessel occlusion presenting in the late time window not fulfilling the DEFUSE-3 (Thrombectomy for Stroke at 6 to 16 Hours With Selection by Perfusion Imaging trial) and DAWN (Thrombectomy 6 to 24 Hours After Stroke With a Mismatch Between Deficit and Infarct trial) inclusion criteria. Methods: Cohort study of adults with anterior circulation large vessel occlusion admitted between 6 and 24 hours after last-seen-well at 5 participating Swiss stroke centers between 2014 and 2021. Mismatch was assessed by computer tomography or magnetic resonance imaging perfusion with automated software (RAPID or OLEA). We excluded patients meeting DEFUSE-3 and DAWN inclusion criteria and compared those who underwent MT with those receiving best medical treatment alone by inverse probability of treatment weighting using the propensity score. The primary efficacy end point was a favorable functional outcome at 90 days, defined as a modified Rankin Scale score shift toward lower categories. The primary safety end point was symptomatic intracranial hemorrhage within 7 days of stroke onset; the secondary was all-cause mortality within 90 days. Results: Among 278 patients with anterior circulation large vessel occlusion presenting in the late time window, 190 (68%) did not meet the DEFUSE-3 and DAWN inclusion criteria and thus were included in the analyses. Of those, 102 (54%) received MT. In the inverse probability of treatment weighting analysis, patients in the MT group had higher odds of favorable outcomes compared with the best medical treatment alone group (modified Rankin Scale shift: acOR, 1.46 [1.02–2.10]; P=0.04) and lower odds of all-cause mortality within 90 days (aOR, 0.59 [0.37–0.93]; P=0.02). There were no significant differences in symptomatic intracranial hemorrhage (MT versus best medical treatment alone: 5% versus 2%, P=0.63). Conclusio
- Published
- 2023
4. Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients
- Author
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Dittrich, Tolga D, primary, Sporns, Peter B, additional, Kriemler, Lilian F, additional, Rudin, Salome, additional, Nguyen, Anh, additional, Zietz, Annaelle, additional, Polymeris, Alexandros A, additional, Tränka, Christopher, additional, Thilemann, Sebastian, additional, Wagner, Benjamin, additional, Altersberger, Valerian L, additional, Piot, Ines, additional, Barinka, Filip, additional, Hänsel, Martin, additional, Gensicke, Henrik, additional, Engelter, Stefan T, additional, Lyrer, Philippe A, additional, Sutter, Raoul, additional, Nickel, Christian H, additional, Katan, Mira, additional, Peters, Nils, additional, Michels, Lars, additional, Kulcsár, Zsolt, additional, Karwacki, Grzegorz M, additional, Pileggi, Marco, additional, Cereda, Carlo, additional, Wegener, Susanne, additional, Bonati, Leo H, additional, Fischer, Urs, additional, Psychogios, Marios, additional, and De Marchis, Gian Marco, additional
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- 2022
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5. Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients.
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Dittrich, Tolga D, Sporns, Peter B, Kriemler, Lilian F, Rudin, Salome, Nguyen, Anh, Zietz, Annaelle, Polymeris, Alexandros A, Tränka, Christopher, Thilemann, Sebastian, Wagner, Benjamin, Altersberger, Valerian L, Piot, Ines, Barinka, Filip, Hänsel, Martin, Gensicke, Henrik, Engelter, Stefan T, Lyrer, Philippe A, Sutter, Raoul, Nickel, Christian H, and Katan, Mira
- Subjects
THROMBECTOMY ,INTRACRANIAL hemorrhage ,STROKE ,TREATMENT effectiveness ,MORTALITY - Abstract
Background: The DEFUSE-3 and DAWN trials showed that mechanical thrombectomy (MT) improves the outcome of selected patients with anterior circulation large vessel occlusions (LVO) up to 24 h after stroke onset. However, it is unknown whether only those patients fulfilling the trial inclusion criteria benefit, or whether benefit is seen in a broader range of patients presenting between 6 and 24 h. Aims: We determined whether fulfilling the DEFUSE-3 and DAWN selection criteria affects outcomes in MT patients in clinical practice. Methods: We reviewed adult patients with LVO treated with MT between 6 and 24 h after stroke onset at five Swiss stroke centers between 2014 and 2021. We compared two groups: (1) patients who satisfied neither DEFUSE-3 nor DAWN criteria (NDND) and (2) those who satisfied DEFUSE-3 or DAWN criteria (DOD). We used logistic regression to examine the impact of trial eligibility on two safety outcomes (symptomatic intracranial hemorrhage [sICH] and all-cause mortality at 3 months) and two efficacy outcomes (modified Rankin Score [mRS] shift toward lower categories and mRS of 0–2 at 3 months). Results: Of 174 patients who received MT, 102 (59%) belonged to the NDND group. Rates of sICH were similar between the NDND group and the DOD group (3% vs. 4%, p = 1.00). Multivariable regression revealed no differences in 3-month all-cause mortality (aOR 2.07, 95% CI 0.64–6.84, p = 0.23) or functional outcomes (mRS shift: acOR 0.81, 95% CI 0.37–1.79, p = 0.60; mRS 0–2: aOR 0.91, 95% CI 0.31–2.57, p = 0.85). Conclusion: Among adult patients with LVO treated with MT between 6 and 24 h, safety and efficacy outcomes were similar between DEFUSE-3/DAWN eligible and ineligible patients. Our data provide a compelling rationale for randomized trials with broader inclusion criteria for MT. [ABSTRACT FROM AUTHOR]
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- 2023
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6. sj-docx-1-wso-10.1177_17474930221140793 – Supplemental material for Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients
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Dittrich, Tolga D, Sporns, Peter B, Kriemler, Lilian F, Rudin, Salome, Nguyen, Anh, Zietz, Annaelle, Polymeris, Alexandros A, Tränka, Christopher, Thilemann, Sebastian, Wagner, Benjamin, Altersberger, Valerian L, Piot, Ines, Barinka, Filip, Hänsel, Martin, Gensicke, Henrik, Engelter, Stefan T, Lyrer, Philippe A, Sutter, Raoul, Nickel, Christian H, Katan, Mira, Peters, Nils, Michels, Lars, Kulcsár, Zsolt, Karwacki, Grzegorz M, Pileggi, Marco, Cereda, Carlo, Wegener, Susanne, Bonati, Leo H, Fischer, Urs, Psychogios, Marios, and De Marchis, Gian Marco
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FOS: Clinical medicine ,Cardiology ,Medicine ,110904 Neurology and Neuromuscular Diseases - Abstract
Supplemental material, sj-docx-1-wso-10.1177_17474930221140793 for Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients by Tolga D Dittrich, Peter B Sporns, Lilian F Kriemler, Salome Rudin, Anh Nguyen, Annaelle Zietz, Alexandros A Polymeris, Christopher Tränka, Sebastian Thilemann, Benjamin Wagner, Valerian L Altersberger, Ines Piot, Filip Barinka, Martin Hänsel, Henrik Gensicke, Stefan T Engelter, Philippe A Lyrer, Raoul Sutter, Christian H Nickel, Mira Katan, Nils Peters, Lars Michels, Zsolt Kulcsár, Grzegorz M Karwacki, Marco Pileggi, Carlo Cereda, Susanne Wegener, Leo H Bonati, Urs Fischer, Marios Psychogios and Gian Marco De Marchis in International Journal of Stroke
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- 2022
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7. sj-docx-2-wso-10.1177_17474930221140793 – Supplemental material for Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients
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Dittrich, Tolga D, Sporns, Peter B, Kriemler, Lilian F, Rudin, Salome, Nguyen, Anh, Zietz, Annaelle, Polymeris, Alexandros A, Tränka, Christopher, Thilemann, Sebastian, Wagner, Benjamin, Altersberger, Valerian L, Piot, Ines, Barinka, Filip, Hänsel, Martin, Gensicke, Henrik, Engelter, Stefan T, Lyrer, Philippe A, Sutter, Raoul, Nickel, Christian H, Katan, Mira, Peters, Nils, Michels, Lars, Kulcsár, Zsolt, Karwacki, Grzegorz M, Pileggi, Marco, Cereda, Carlo, Wegener, Susanne, Bonati, Leo H, Fischer, Urs, Psychogios, Marios, and De Marchis, Gian Marco
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FOS: Clinical medicine ,Cardiology ,Medicine ,110904 Neurology and Neuromuscular Diseases - Abstract
Supplemental material, sj-docx-2-wso-10.1177_17474930221140793 for Mechanical thrombectomy for large vessel occlusion between 6 and 24 h: outcome comparison of DEFUSE-3/DAWN eligible versus non-eligible patients by Tolga D Dittrich, Peter B Sporns, Lilian F Kriemler, Salome Rudin, Anh Nguyen, Annaelle Zietz, Alexandros A Polymeris, Christopher Tränka, Sebastian Thilemann, Benjamin Wagner, Valerian L Altersberger, Ines Piot, Filip Barinka, Martin Hänsel, Henrik Gensicke, Stefan T Engelter, Philippe A Lyrer, Raoul Sutter, Christian H Nickel, Mira Katan, Nils Peters, Lars Michels, Zsolt Kulcsár, Grzegorz M Karwacki, Marco Pileggi, Carlo Cereda, Susanne Wegener, Leo H Bonati, Urs Fischer, Marios Psychogios and Gian Marco De Marchis in International Journal of Stroke
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- 2022
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8. Dose-Related Effects of Statins on Symptomatic Intracerebral Hemorrhage and Outcome After Thrombolysis for Ischemic Stroke
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Scheitz, Jan F., Seiffge, David J., Tütüncü, Serdar, Gensicke, Henrik, Audebert, Heinrich J., Bonati, Leo H., Fiebach, Jochen B., Tränka, Christopher, Lyrer, Philippe A., Endres, Matthias, Engelter, Stefan T., and Nolte, Christian H.
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- 2014
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9. Investigation of the expression and function of the 'LIM and SH3 Domain Protein' LASP-1 in Medulloblastoma
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Tränka, Christopher
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Medulloblastom ,ddc:610 - Abstract
Medulloblastome (MB) gehören zu den häufigsten Tumorerkrankungen des Kindes- und Jugendalters, in der Gruppe der intrakraniell und intraspinal gelegenen Tumoren stellen sie gar die häufigste Entität in dieser Altersgruppe dar. Die Einteilung der nach WHO Grad IV klassifizierten Medulloblastome erfolgt derzeit hauptsächlich in vier Subgruppen entsprechend der jeweils vorherrschenden molekulargenetischen Veränderungen. Aberrationen der Chromosomen 7 und 17 sind dabei die häufigsten molekulargenetischen Veränderungen der als Hochrisiko-MB eingestuften Tumoren der Gruppe 3 und 4. Das LIM- und SH3-Domänen-Protein „LASP-1“ ist auf Chromosom 17 in der Region q11 – q21.3 codiert und wird im humanen Organismus ubiquitär exprimiert. LASP-1 wurde in vergleichenden mRNA-Analysen als eines der am stärksten hochregulierten Transkripte in MB mit Chromosom 17q – Zugewinn identifiziert. Als ein Aktin – bindendes Gerüstprotein spielt LASP-1 eine wichtige Rolle in der Zytoskelettorganisation humaner Zellen. Die pathophysiologische Bedeutung einer LASP-1-Überexpression wurde bereits unter anderem in Brustkrebs- und Ovarialkrebszellen demonstriert, in denen ein LASP-1-silencing die Migration und Proliferation der Zellen hemmte. Die Ergebnisse dieser Dissertation unterstreichen bisherige Annahmen, dass eine LASP-1-Überexpression eine wichtige Rolle in der Tumorigenese und Metastasenbildung humaner Tumoren spielt. Mittels Immunfluoreszenz konnte die Ko-Lokalisation von LASP-1 und F-Aktin in MB bestätigt werden. Aufgefallen ist dabei eine besonders starke Akkumulation der phosphorylierten Variante von LASP-1 in MB-Zellkernen. Funktionelle Untersuchungen zu LASP-1 in MB erbrachten zudem folgende Ergebnisse: ein LASP-1 silencing mittels small-interfering-RNA (siRNA) führte zu einer signifikant verringerten Proliferations- und Migrationsfähigkeit der untersuchten Tumorzellen. Die Adhäsionsfähigkeit der MB-Zellen konnte durch ein LASP-1-silencing hingegen signifikant gesteigert werden – ein erstmaliger direkter Nachweis des möglichen Einflusses von LASP-1 auf die Adhäsionsfähigkeit humaner Tumorzellen. Die Ergebnisse der vorliegenden Arbeit bestätigen bisherige Erkenntnisse zur Funktion von LASP-1 in humanen Tumorzellen und übertragen diese auf das humane Medulloblastom. Parallel zu dieser Dissertation durchgeführte immunhistochemische Untersuchungen (DKFZ, Heidelberg) stellten eine signifikante Korrelation einer hohen LASP-1-Expression in humanen MB und einem Zugewinn auf Chromosom 17q, einer fortgeschrittenen Metastasierung sowie schlechterem progressfreien und schlechterem Gesamtüberleben her. Nicht zuletzt im Kontext individualisierter Therapieansätze, basierend auf jeweiligen molekulargenetischen Veränderungen der Tumoren, könnte LASP-1 somit als ein prognostischer Marker in humanen Medulloblastomen dienen und zum Beispiel eine Therapie-(De)Eskalation stützen., Medulloblastoma is the most common malignant pediatric brain tumor. This WHO grade IV tumor is currently classified into four subgroups, based on the predominant molecular and cytogenetic changes in each tumor. Aberrations of the chromosomes 7 and 17 are most common in high-risk Medulloblastoma (group 3 and group 4 Medulloblastoma). The LIM- and SH3-domain protein "LASP-1" is ubiquitiously expressed in human tissue, but has been shown to be upregulated in several human cancers. Further, it has been identified as one of the most upregulated transcripts in Medulloblastoma harboring a 17q gain. This analysis identifies LASP-1 as an important regulator of cell migration, proliferation and cell adhesion in Medulloblastoma. Upon siRNA LASP-1-silencing in Medulloblastoma celllines, cell migration and proliferation were significantly inhibited, whereas cell adhesion was significantly increased.
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- 2015
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