LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 34

Search options

  1. Book ; Thesis: Klinische und radiologische Beurteilung des ARDS

    Hirt, Stephan W.

    Vergl. von konventionellen Röntgenbildern u. Computertomogramm bei Intensivpatienten

    1985  

    Size 145 S. : Ill., graph. Darst.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Bonn, Univ., Diss., 1985
    HBZ-ID HT003141563
    Database Catalogue ZB MED Medicine, Health

    Kategorien

  2. Article ; Online: European Reflections on New Indications for Extracorporeal Photopheresis in Solid Organ Transplantation.

    Ahrens, Norbert / Geissler, Edward K / Witt, Volker / Berneburg, Mark / Wolff, Daniel / Hirt, Stephan W / Banas, Bernhard / Schlitt, Hans J / Hutchinson, James A

    Transplantation

    2018  Volume 102, Issue 8, Page(s) 1279–1283

    MeSH term(s) Animals ; Apoptosis ; Dendritic Cells/cytology ; Europe ; Graft vs Host Disease/immunology ; Humans ; Immunosuppressive Agents ; Mice ; Mice, Inbred C57BL ; Monocytes/cytology ; Organ Transplantation/methods ; Photopheresis/instrumentation ; Photopheresis/methods ; Photopheresis/standards ; Quality Control ; T-Lymphocytes/cytology ; United States
    Chemical Substances Immunosuppressive Agents
    Language English
    Publishing date 2018-04-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 208424-7
    ISSN 1534-6080 ; 0041-1337
    ISSN (online) 1534-6080
    ISSN 0041-1337
    DOI 10.1097/TP.0000000000002244
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Synergism of imatinib, vatalanib and everolimus in the prevention of chronic lung allograft rejection after lung transplantation (LTx) in rats.

    Keil, Laura / Schaub, Anna-Lena / Hirt, Stephan W / Schmid, Christof / Lehle, Karla / von Suesskind-Schwendi, Marietta

    Histology and histopathology

    2019  Volume 34, Issue 7, Page(s) 821–834

    Abstract: Chronic lung allograft dysfunction (CLAD) still remains a major drawback in the outcome following lung transplantation (LTx). New therapeutic strategies are warranted. Growth factors and their receptors like platelet-derived growth factor-receptor (PDGFR) ...

    Abstract Chronic lung allograft dysfunction (CLAD) still remains a major drawback in the outcome following lung transplantation (LTx). New therapeutic strategies are warranted. Growth factors and their receptors like platelet-derived growth factor-receptor (PDGFR) and vascular endothelial growth factor-receptor (VEGFR), may play a crucial role in the development of CLAD, especially bronchiolitis obliterans (BO) and vasculopathy. In this study, we used an orthotopic left lung transplantation model from Fischer (F344) to Wystar Kyoto (WKY) rats to investigate the effect of the receptor tyrosine kinase inhibitor (RTKI) vatalanib alone, the dual combination of vatalanib and imatinib and a triple therapy consisting of vatalanib, imatinib and the mammalian target of rapamycin inhibitor (mTORI) everolimus on the development of CLAD after LTx in rats. With this trial we demonstrated that monotherapy with vatalanib attenuated mild and severe chronic vascular rejection, whereas dual therapy (vatalanib and imatinib) after LTx also showed a significant reduction of chronic bronchiolar rejection and interstitial fibrosis. By adding everolimus, the effect of vatalanib and imatinib could additionally be increased. In conclusion, the combination of mTORI and RTKIs might be a possible strategy in the prevention of CLAD and BO.
    MeSH term(s) Animals ; Bronchiolitis Obliterans/pathology ; Bronchiolitis Obliterans/prevention & control ; Drug Synergism ; Everolimus/therapeutic use ; Fibrosis ; Graft Rejection/pathology ; Graft Rejection/prevention & control ; Imatinib Mesylate/therapeutic use ; Immunohistochemistry ; Lung Transplantation ; Phthalazines/therapeutic use ; Protein Kinase Inhibitors/therapeutic use ; Pyridines/therapeutic use ; Rats ; Rats, Inbred F344 ; Rats, Inbred WKY ; Receptor Protein-Tyrosine Kinases/antagonists & inhibitors ; Receptor, Platelet-Derived Growth Factor alpha/metabolism ; TOR Serine-Threonine Kinases/antagonists & inhibitors ; Transplantation, Homologous ; Vascular Endothelial Growth Factor Receptor-2/metabolism
    Chemical Substances Phthalazines ; Protein Kinase Inhibitors ; Pyridines ; vatalanib (5DX9U76296) ; Imatinib Mesylate (8A1O1M485B) ; Everolimus (9HW64Q8G6G) ; TOR Serine-Threonine Kinases (EC 2.7.1.1) ; Kdr protein, rat (EC 2.7.10.1) ; Receptor Protein-Tyrosine Kinases (EC 2.7.10.1) ; Receptor, Platelet-Derived Growth Factor alpha (EC 2.7.10.1) ; Vascular Endothelial Growth Factor Receptor-2 (EC 2.7.10.1)
    Language English
    Publishing date 2019-02-01
    Publishing country Spain
    Document type Journal Article
    ZDB-ID 83911-5
    ISSN 1699-5848 ; 0213-3911
    ISSN (online) 1699-5848
    ISSN 0213-3911
    DOI 10.14670/HH-18-088
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: The activity of nintedanib in an animal model of allogenic left lung transplantation resembling aspects of allograft rejection.

    von Suesskind-Schwendi, Marietta / Boxhammer, Elke / Hirt, Stephan W / Schreml, Stephan / Schmid, Christof / Wollin, Lutz / Lehle, Karla

    Experimental lung research

    2017  Volume 43, Issue 6-7, Page(s) 259–270

    Abstract: Aim of the study: The prevention and treatment of chronic lung allograft dysfunction (CLAD) after lung transplantation (LTx) remain unsatisfactory. Growth factors may play an important role in the development of CLAD. This study evaluated the effects of ...

    Abstract Aim of the study: The prevention and treatment of chronic lung allograft dysfunction (CLAD) after lung transplantation (LTx) remain unsatisfactory. Growth factors may play an important role in the development of CLAD. This study evaluated the effects of nintedanib, a receptor tyrosine kinase inhibitor, in the treatment of CLAD after experimental LTx.
    Materials and methods: A rat model of left lung allo-transplantation (Fisher 344 to Wistar Kyoto) was used to evaluate the effect of nintedanib (50 mg/kg per day) on the development of CLAD. Therapy with nintedanib began 2 days before LTx and ended on postoperative day (POD) 20 (n = 6) or 60 (n = 6). Nontreated animals who underwent LTx (n = 12) were used as controls, whereas naïve lungs (n = 24) served as reference for physiological healthy organs without transplantation damage or medical effects. Acute and chronic rejection were evaluated on POD 20 and 60, respectively.
    Results: Immunohistologic analysis showed a decrease in growth factors/receptors on POD 60 (nintedanib-treated vs. nontreated controls: platelet-derived growth factor (PDGF) A: [P ≤ 0.001]; PDGF receptor-α: [P ≤ 0.001]; vascular endothelial growth factor (VEGF) A: [P ≤ 0.001]; VEGF receptor-2: [P ≤ 0.001]). However, no reductions in fibrotic changes were observed in nintedanib-treated allografts compared with nontreated allografts. Although nintedanib treatment started before LTx none of the animals showed impaired wound healing. No dehiscence of the sutures of the bronchus, vessels or skin, or stenosis of the bronchus was found.
    Conclusion: In conclusion, while nintedanib reduced the expression of growth factors/receptors in a rat LTx model, a reduction in fibrotic alterations was not observed at POD 60.
    MeSH term(s) Allografts/drug effects ; Allografts/metabolism ; Animals ; Disease Models, Animal ; Graft Rejection/drug therapy ; Graft Rejection/metabolism ; Immunosuppressive Agents/pharmacology ; Indoles/pharmacology ; Lung/drug effects ; Lung/metabolism ; Lung Transplantation/adverse effects ; Platelet-Derived Growth Factor/metabolism ; Rats ; Rats, Inbred F344 ; Rats, Inbred WKY ; Vascular Endothelial Growth Factor A/metabolism
    Chemical Substances Immunosuppressive Agents ; Indoles ; Platelet-Derived Growth Factor ; Vascular Endothelial Growth Factor A ; platelet-derived growth factor A ; nintedanib (G6HRD2P839)
    Language English
    Publishing date 2017-08
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 603791-4
    ISSN 1521-0499 ; 0190-2148
    ISSN (online) 1521-0499
    ISSN 0190-2148
    DOI 10.1080/01902148.2017.1354408
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Comparing everolimus-based immunosuppression with reduction or withdrawal of calcineurin inhibitor reduction from six months after heart transplantation: the randomized MANDELA study.

    Barten, Markus J / Hirt, Stephan W / Garbade, Jens / Bara, Christoph / Doesch, Andreas O / Knosalla, Christoph / Grinninger, Carola / Stypmann, Jörg / Sieder, Christian / Lehmkuhl, Han B / Porstner, Martina / Schulz, Uwe

    American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons

    2019  

    Abstract: In the 12-month, open-label MANDELA study, patients were randomized at month 6 after heart transplantation to (i) convert to calcineurin inhibitor (CNI)-free immunosuppression with everolimus (EVR), mycophenolic acid and steroids (CNI-free, n=71), or to ( ...

    Abstract In the 12-month, open-label MANDELA study, patients were randomized at month 6 after heart transplantation to (i) convert to calcineurin inhibitor (CNI)-free immunosuppression with everolimus (EVR), mycophenolic acid and steroids (CNI-free, n=71), or to (ii) continue reduced-exposure CNI, with EVR and steroids (EVR/redCNI, n=74). Tacrolimus was administered in 48.8% of EVR/redCNI patients and 52.6% of CNI-free patients at radomization. Both strategies improved and stabilized renal function based on the primary endpoint (estimated GFR at month 18 post-transplant post-randomization) with superiority of the CNI-free group versus EVR/redCNI : mean 64.1mL/min/1.73m
    Language English
    Publishing date 2019-03-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2060594-8
    ISSN 1600-6143 ; 1600-6135
    ISSN (online) 1600-6143
    ISSN 1600-6135
    DOI 10.1111/ajt.15361
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Impact of Elevated Donor Troponin I as Predictor of Adverse Outcome in Adult Heart Transplantation: A Single-center Experience.

    Freundt, Miriam / Philipp, Alois / Kolat, Philipp / Rupprecht, Leopold / Friedrich, Christine / Hirt, Stephan W / Haneya, Assad

    The Thoracic and cardiovascular surgeon

    2017  Volume 66, Issue 5, Page(s) 417–424

    Abstract: Background: Due to globally increasing donor organ shortage, investigation of previously described risk factors for utilizing marginal donor hearts is needed. The aim of this study was to determine the impact of elevated donor serum troponin I (TnI) ... ...

    Abstract Background: Due to globally increasing donor organ shortage, investigation of previously described risk factors for utilizing marginal donor hearts is needed. The aim of this study was to determine the impact of elevated donor serum troponin I (TnI) levels on outcome after heart transplantation (HTx).
    Methods: Between January 1996 and August 2013, 161 patients were reviewed for donor TnI serum levels (>0.3 ng/mL was considered elevated), postoperative outcome parameters, 30-day mortality, and 1-, 3-, and 5-year survival.
    Results: TnI levels were elevated in 45 (28.0%) donors. Recipients of hearts with elevated TnI had higher incidence of postoperative systolic dysfunction, prolonged inotropic support, prolonged mechanical ventilation, and longer intensive care unit (ICU) stay (
    Conclusions: Elevated donor TnI serum concentration seems to be a marker for adverse outcome and increased short- and long-term mortality after HTx. Nevertheless, many other perioperative variables and parameters can be associated with outcome.
    MeSH term(s) Adult ; Biomarkers/blood ; Donor Selection ; Female ; Germany ; Heart Transplantation/adverse effects ; Heart Transplantation/mortality ; Humans ; Kaplan-Meier Estimate ; Male ; Middle Aged ; Postoperative Complications/etiology ; Postoperative Complications/mortality ; Postoperative Complications/physiopathology ; Postoperative Complications/therapy ; Retrospective Studies ; Risk Factors ; Time Factors ; Tissue Donors ; Treatment Outcome ; Troponin I/blood ; Up-Regulation
    Chemical Substances Biomarkers ; Troponin I
    Language English
    Publishing date 2017-09-18
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0037-1606363
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Minimized extracorporeal circulation is improving outcome of coronary artery bypass surgery in the elderly.

    Freundt, Miriam / Ried, Michael / Philipp, Alois / Diez, Claudius / Kolat, Philipp / Hirt, Stephan W / Schmid, Christof / Haneya, Assad

    Perfusion

    2016  Volume 31, Issue 2, Page(s) 143–148

    Abstract: Advanced age is a known risk factor for morbidity and mortality after coronary artery bypass grafting (CABG). Minimized extracorporeal circulation (MECC) has been shown to reduce the negative effects associated with conventional extracorporeal ... ...

    Abstract Advanced age is a known risk factor for morbidity and mortality after coronary artery bypass grafting (CABG). Minimized extracorporeal circulation (MECC) has been shown to reduce the negative effects associated with conventional extracorporeal circulation (CECC). This trial assesses the impact of MECC on the outcome of elderly patients undergoing CABG. Eight hundred and seventy-five patients (mean age 78.35 years) underwent isolated CABG using CECC (n=345) or MECC (n=530). The MECC group had a significantly shorter extracorporeal circulation time (ECCT), cross-clamp time and reperfusion time and lower transfusion needs. Postoperatively, these patients required significantly less inotropic support, fewer blood transfusions, less postoperative hemodialysis and developed less delirium compared to CECC patients. In the MECC group, intensive care unit (ICU) stay was significantly shorter and 30-day mortality was significantly reduced [2.6% versus 7.8%; p<0.001]. In conclusion, MECC improves outcome in elderly patients undergoing CABG surgery.
    MeSH term(s) Aged ; Aged, 80 and over ; Coronary Artery Bypass/adverse effects ; Coronary Artery Bypass/methods ; Disease-Free Survival ; Extracorporeal Circulation/adverse effects ; Extracorporeal Circulation/methods ; Female ; Humans ; Male ; Retrospective Studies ; Survival Rate
    Language English
    Publishing date 2016-03
    Publishing country England
    Document type Clinical Trial ; Journal Article
    ZDB-ID 645038-6
    ISSN 1477-111X ; 0267-6591
    ISSN (online) 1477-111X
    ISSN 0267-6591
    DOI 10.1177/0267659115588634
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Everolimus's influence on persistent acute rejection after experimental lung transplantation.

    Brunner, Elisabeth / Lehle, Karla / Hirt, Stephan W / Schmid, Christof / von Suesskind-Schwendi, Marietta

    Advances in clinical and experimental medicine : official organ Wroclaw Medical University

    2013  Volume 22, Issue 3, Page(s) 355–359

    Abstract: Background: In lung transplantation, acute rejection episodes increase the risk of chronic rejection. Therefore treatment of acute rejection needs to be optimized for better long-term outcome of lung-transplantation and patient survival.: Objectives: ...

    Abstract Background: In lung transplantation, acute rejection episodes increase the risk of chronic rejection. Therefore treatment of acute rejection needs to be optimized for better long-term outcome of lung-transplantation and patient survival.
    Objectives: The aim was to verify whether an inhibitor of the mammalian target of rapamycin (Everolimus) contained the extent of persistent acute rejection after left lung allo-transplantation in rats.
    Material and methods: Rats (F344-to-WKY) with a high grade of acute rejection were treated with methylprednisolone (10mg/kg, postoperative days 14-16) alone or in combination with everolimus (2.5 mg/kg, postoperative days 14-30). The rats were killed on postoperative day 20 and 30. Infiltration of inflammatory cells (ED1, CD11a, CD18) and activation of endothelial cells (ICAM-1) were measured by immunohistochemistry
    Results: Everolimus treatment significantly reduced the number of ICAM-1 positive small vessels (66%; p<0.05) and suppressed the infiltration of leucocytes (CD11a (64%), CD18 (42%); p<0.05) and macrophages (ED1; 22%) in the allografts on POD 30. Despite this clear anti-inflammatory effects, lung allografts still showed severe acute vascular rejection in combination with high grade small airway inflammation.
    Conclusions: The shown anti-inflammatory effects of Everolimus could not delay the progression of acute rejection in rat lung allografts.
    MeSH term(s) Acute Disease ; Animals ; Bronchiolitis/drug therapy ; Bronchiolitis/immunology ; Everolimus ; Graft Rejection/drug therapy ; Graft Rejection/immunology ; Lung Transplantation ; Lymphocytes/drug effects ; Lymphocytes/immunology ; Rats ; Rats, Inbred F344 ; Sirolimus/analogs & derivatives ; Sirolimus/pharmacology ; Sirolimus/therapeutic use
    Chemical Substances Everolimus (9HW64Q8G6G) ; Sirolimus (W36ZG6FT64)
    Language English
    Publishing date 2013-05
    Publishing country Poland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2270257-X
    ISSN 1899-5276 ; 1230-025X
    ISSN 1899-5276 ; 1230-025X
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Re-exploration for bleeding or tamponade after cardiac surgery: impact of timing and indication on outcome.

    Haneya, Assad / Diez, Claudius / Kolat, Philipp / Suesskind-Schwendi, Marietta von / Ried, Michael / Schmid, Christof / Hirt, Stephan W

    The Thoracic and cardiovascular surgeon

    2015  Volume 63, Issue 1, Page(s) 51–57

    Abstract: Objectives: Re-exploration after cardiac surgery remains a frequent complication with adverse outcomes. The aim of this study was to evaluate the impact of timing and indication of re-exploration on outcome.: Methods: A retrospective, observational ... ...

    Abstract Objectives: Re-exploration after cardiac surgery remains a frequent complication with adverse outcomes. The aim of this study was to evaluate the impact of timing and indication of re-exploration on outcome.
    Methods: A retrospective, observational study on a cohort of 209 patients, who underwent re-exploration after cardiac surgery between January 2005 and December 2011, was performed. The cohort was matched for age, gender, and procedure with patients who were not re-explored during the same period.
    Results: The intraoperative and postoperative transfusion requirements were higher in the re-exploration group (p < 0.01). Patients in the re-exploration group had significantly higher incidences of postoperative acute renal injury (10.0 vs. 3.3%), sternal wound (9.1 vs. 2.4%) and pulmonary (13.4 vs. 4.3%) infections, longer ventilation time (22 [range, 14-52] vs. 12 [range, 9-16] hours) and intensive care unit stay (5 [range, 3-7] vs. 2 [range, 2-4] days), and higher mortality rate (9.6 vs. 3.3%). However, the multivariate logistic regression analysis demonstrated that not the re-exploration itself, but the deleterious effects of re-exploration (blood loss and transfusion requirement) were independent risk factors for mortality. Mortality was 5.3% for patients who were re-explored within the first 12 hours and 20.3% for patients who were re-explored after 12 hours (p = 0.003). Mortality was 3.6% for patients with bleeding and 31.4% for patients with cardiac tamponade for indication of re-exploration (p < 0.001).
    Conclusions: This study suggests that re-exploration after cardiac surgery is associated with increased mortality and morbidity. Patients with delayed re-exploration and suffering from cardiac tamponade have adverse outcome.
    MeSH term(s) Aged ; Blood Transfusion ; Cardiac Surgical Procedures ; Cardiac Tamponade/complications ; Cardiac Tamponade/etiology ; Female ; Humans ; Intraoperative Care ; Logistic Models ; Male ; Postoperative Care ; Postoperative Complications/mortality ; Postoperative Hemorrhage/etiology ; Reoperation ; Retrospective Studies ; Risk Factors ; Treatment Outcome
    Language English
    Publishing date 2015-02
    Publishing country Germany
    Document type Journal Article ; Observational Study
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0034-1390154
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article: Impact of Elevated Donor Troponin I as Predictor of Adverse Outcome in Adult Heart Transplantation: A Single-center Experience

    Freundt, Miriam / Philipp, Alois / Kolat, Philipp / Rupprecht, Leopold / Friedrich, Christine / Hirt, Stephan W. / Haneya, Assad

    The Thoracic and Cardiovascular Surgeon

    2017  Volume 66, Issue 05, Page(s) 417–424

    Abstract: Background: Due to globally increasing donor organ shortage, investigation of previously described risk factors for utilizing marginal donor hearts is needed. The aim of this study was to determine the impact of elevated donor serum troponin I (TnI) ... ...

    Abstract Background: Due to globally increasing donor organ shortage, investigation of previously described risk factors for utilizing marginal donor hearts is needed. The aim of this study was to determine the impact of elevated donor serum troponin I (TnI) levels on outcome after heart transplantation (HTx).
    Methods: Between January 1996 and August 2013, 161 patients were reviewed for donor TnI serum levels (>0.3 ng/mL was considered elevated), postoperative outcome parameters, 30-day mortality, and 1-, 3-, and 5-year survival.
    Results: TnI levels were elevated in 45 (28.0%) donors. Recipients of hearts with elevated TnI had higher incidence of postoperative systolic dysfunction, prolonged inotropic support, prolonged mechanical ventilation, and longer intensive care unit (ICU) stay ( p  < 0.001). This group had higher 30-day mortality (22.2% vs 8.6%, p  = 0.03) and lower 1-, 3-, and 5-year survival (56%, 53%, and 50% versus 82%, 76%, and 69%, p  = 0.032). Elevated TnI was the only independent risk factor for 30-day mortality (odds ratio [OR] 3.63, 95% confidence interval [CI] 1.28–10.27, p  = 0.015).
    Conclusions: Elevated donor TnI serum concentration seems to be a marker for adverse outcome and increased short- and long-term mortality after HTx. Nevertheless, many other perioperative variables and parameters can be associated with outcome.
    Keywords heart transplantation ; organ donor selection ; transplant outcome ; troponin I
    Language English
    Publishing date 2017-09-18
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 800050-5
    ISSN 1439-1902 ; 0171-6425 ; 0946-4778 ; 0172-6137
    ISSN (online) 1439-1902
    ISSN 0171-6425 ; 0946-4778 ; 0172-6137
    DOI 10.1055/s-0037-1606363
    Database Thieme publisher's database

    More links

    Kategorien

To top