1
|
Bening C, Genser B, Keller D, Müller-Altrock S, Radakovic D, Penov K, Hassan M, Aleksic I, Leyh R, Madrahimov N. Impact of estradiol, testosterone and their ratio on left and right auricular myofilament function in male and female patients undergoing coronary artery bypass grafting. BMC Cardiovasc Disord 2023; 23:538. [PMID: 37925416 PMCID: PMC10625250 DOI: 10.1186/s12872-023-03582-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 10/26/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND The impact of sex hormones on right and left auricular contractile apparatus function is largely unknown. We evaluated the impact of sex hormones on left and right heart contractility at the level of myocardial filaments harvested from left and right auricles during elective coronary artery bypass surgery. METHODS 150 patients (132 male; 18 female) were enrolled. Preoperative testosterone and estradiol levels were measured with Immunoassay. Calcium induced force measurements were performed with left- and right auricular myofilaments in a skinned fiber model. Correlation analysis was used for comparison of force values and levels of sex hormones and their ratio. RESULTS Low testosterone was associated with higher top force values in right-sided myofilaments but not in left-sided myofilaments for both sexes (p = 0.000 in males, p = 0.001 in females). Low estradiol levels were associated with higher top force values in right-sided myofilaments (p 0.000) in females and only borderline significantly associated with higher top force values in males (p 0.056). In females, low estradiol levels correlated with higher top force values in left sided myofilaments (p 0.000). In males, higher Estradiol/Testosterone ratio (E/T ratio) was only associated with higher top force values from right auricular myofilaments (p 0.04) In contrast, in females higher E/T ratio was associated with lower right auricular myofilament top force values (p 0.03) and higher top force values in left-sided myofilaments (p 0.000). CONCLUSIONS This study shows that patients' comorbidities influence left and right sided contractility and may blur results concerning influence of sex hormones if not eliminated. A sex hormone dependent influence is obvious with different effects on the left and right ventricle. The E/T ratio and its impact on myofilament top force showed divergent results between genders, and may partially explain gender differences in patients with cardiovascular disease.
Collapse
Affiliation(s)
- C Bening
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany.
| | - B Genser
- Medical Faculty Mannheim, Center for Preventive Medicine, Heidelberg University, Digital Health Baden-Württemberg (CPD-BW), Heidelberg , Germany
| | - D Keller
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - S Müller-Altrock
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - D Radakovic
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - K Penov
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - M Hassan
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - I Aleksic
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - R Leyh
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - N Madrahimov
- Department of Thoracic and Cardiovascular Surgery, University Hospital Wuerzburg Zentrum Operative Medizin, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| |
Collapse
|
2
|
Natanov R, Madrahimov N, Rümke S, Wiegmann B, Haverich A, Kühn C. Does Repeated Levosimendan Improve ECMO Weaning and Survival in Postcardiotomy ECMO Patients? Thorac Cardiovasc Surg 2023. [DOI: 10.1055/s-0043-1761789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Affiliation(s)
- R. Natanov
- Hannover Medical School, Hannover, Deutschland
| | | | - S. Rümke
- Medizinische Hochschule Hannover, Hannover, Deutschland
| | - B. Wiegmann
- Hannover Medical School, Hannover, Deutschland
| | - A. Haverich
- Carl-Neuberg-Straße 1, Hannover, Deutschland
| | - C. Kühn
- Saldernstraße 14, Hannover, Deutschland
| |
Collapse
|
3
|
Penov K, Merz T, Radakovic D, Madrahimov N, Hamouda K, Gorski A, Leyh R, Bening C. 15 Years of Experience with 231 Ross Procedures in Adults: A Single-Center Study. Thorac Cardiovasc Surg 2023. [DOI: 10.1055/s-0043-1761767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Affiliation(s)
- K. Penov
- University Hospital Würzburg, Würzburg, Deutschland
| | - T. Merz
- University Hospital Würzburg, Würzburg, Deutschland
| | - D. Radakovic
- University Hospital Würzburg, Würzburg, Deutschland
| | | | - K. Hamouda
- University Hospital Würzburg, Würzburg, Deutschland
| | - A. Gorski
- University Hospital Würzburg, Würzburg, Deutschland
| | - R. Leyh
- University Hospital Würzburg, Würzburg, Deutschland
| | - C. Bening
- University Hospital Würzburg, Würzburg, Deutschland
| |
Collapse
|
4
|
Hassan M, Radakovic D, Berikbol M, Keller D, Madrahimov N, Hamouda K, Leyh R, Bening C. Impact of the Atrial Approach on Atrial Arrhythmia Behavior in Mitral Valve Repair/Replacement Surgery: Do the Ends Justify the Means? Thorac Cardiovasc Surg 2023. [DOI: 10.1055/s-0043-1761824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
Affiliation(s)
- M. Hassan
- University Hospital Würzburg, Würzburg, Deutschland
| | - D. Radakovic
- University Hospital Würzburg, Würzburg, Deutschland
| | - M. Berikbol
- Universitiy Clinic Würzburg, Würzburg, Deutschland
| | - D. Keller
- Klinik für Thorax-, Herz- und Thorakale Gefäßchirurgie, Würzburg, Deutschland
| | | | - K. Hamouda
- University Hospital Würzburg, Würzburg, Deutschland
| | - R. Leyh
- University Hospital Würzburg, Würzburg, Deutschland
| | - C. Bening
- Oberdärrbacherstraße 6, Wärzburg, Deutschland
| |
Collapse
|
5
|
Knöfel AK, Siemeni T, Madrahimov N, Sommer W, Salman J, Avsar M, Kühn C, Tudorache I, Haverich A, Falk C, Warnecke G, Ius F. Primary Graft Dysfunction following Lung Transplantation Is Associated with Increased In Vivo T-Cell Alloreactivity. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - T. Siemeni
- Klinik für Herz- und Thoraxchirurgie am Universitätsklinikum Jena, Jena, Deutschland
| | - N. Madrahimov
- Department of Thoracic and Cardiovascular Surgery, University Clinic Würzburg, Würzburg, Deutschland
| | - W. Sommer
- Heidelberg University, Heidelberg, Deutschland
| | - J. Salman
- Herz-, thorax-, transplantations-, gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - M. Avsar
- Herz-, thorax-, transplantations-, gefäßchirurgie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - C. Kühn
- Saldernstraße 14, Hannover, Deutschland
| | - I. Tudorache
- Heinrich-Heine-University, Department of Cardiac Surgery, Duesseldorf, Deutschland
| | - A. Haverich
- Carl-Neuberg-Straße 1, Hannover, Deutschland
| | - C. Falk
- Institute of transplant immunology, Hannover Medical School, Hannover, Deutschland
| | - G. Warnecke
- Heidelberg University, Heidelberg, Deutschland
| | - F. Ius
- Klinik für Herz-, Thorax-, Transplantations- und Gefäßchirurgie, Göttingen, Deutschland
| |
Collapse
|
6
|
Hassan M, Radakovic D, Madrahimov N, Hamouda K, Schimmer C, Leyh R, Bening C. Cerebral Near-Infrared Spectroscopy Monitoring as a Predictor for Postoperative Delirium in Adult Cardiac Surgery Patients: Myth or Reality? Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- M. Hassan
- University Hospital Würzburg, Würzburg, Deutschland
| | - D. Radakovic
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - N. Madrahimov
- Department of Thoracic and Cardiovascular Surgery, University Clinic Würzburg, Würzburg, Deutschland
| | - K. Hamouda
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - C. Schimmer
- Oberdürrbacher Str. 6, Würzburg, Deutschland
| | - R. Leyh
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - C. Bening
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Oberdärrbacherstraße 6, Würzburg, Deutschland
| |
Collapse
|
7
|
Radakovic D, Penov K, Madrahimov N, Von Bosse F, Keller D, Hassan M, Bening C, Leyh R, Aleksic I. Risk Factors for Perioperative Mortality in Postcardiotomy Patients with Extracorporeal Life Support. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- D. Radakovic
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - K. Penov
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - N. Madrahimov
- Department of Thoracic and Cardiovascular Surgery, University Clinic Würzburg, Würzburg, Deutschland
| | | | - D. Keller
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - M. Hassan
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - C. Bening
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - R. Leyh
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - I. Aleksic
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| |
Collapse
|
8
|
Madrahimov N, Mutsenko V, Makhmetov B, Malikov M, Klapproth A, Cristaldo RB, Hamouda KK, Otto C, Leyh R, Bening C. Real-Time Tissue Oxygenation Monitoring Using Fiberoptic Sensors in Cadaveric Multiorgan Preservation under Mouse ECMO. Thorac Cardiovasc Surg 2022. [DOI: 10.1055/s-0042-1742788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- N. Madrahimov
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - V. Mutsenko
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - B. Makhmetov
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - M. Malikov
- Department of Thoracic and Cardiovascular Surgery, University Clinic Würzburg, Würzburg, Deutschland
| | - A. Klapproth
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - R. Benitez Cristaldo
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - K K. Hamouda
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - C. Otto
- Department of General, Visceral, Transplantation, Vascular and Pediatric Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - R. Leyh
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| | - C. Bening
- Department of Thoracic and Cardiovascular Surgery, University Hospital Würzburg, Würzburg, Deutschland
| |
Collapse
|
9
|
Bening C, Sales VL, Alhussini K, Radakovic D, Benitez RC, Madrahimov N, Keller D, Leyh R. Clinically inapparent right heart dysfunction is associated with reduced myofilament force development in coronary artery disease. BMC Cardiovasc Disord 2021; 21:125. [PMID: 33663396 PMCID: PMC7934411 DOI: 10.1186/s12872-021-01926-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 02/15/2021] [Indexed: 11/30/2022] Open
Abstract
Background Right ventricular dysfunction after CABG is associated with poor peri- and postoperative outcomes. We aimed to identify clinical and experimental predictors for preoperative inapparent right ventricular dysfunction and therefore hypothesized that reduced myofilament force development as well as altered levels of biomarkers might predict inapparent right ventricular dysfunction. Methods From 08/2016 to 02/2018, 218 patients scheduled for CABG were divided into two groups (TAPSE ≥ 20 mm, n = 178; TAPSE < 20 mm, n = 40). Baseline serum samples for biomarkers (Galectin, TGFß1, N Acyl-SDMA, Arginine, ADMA and Pentraxin-3), clinical laboratory and transthoracic echocardiographic parameters were evaluated. To examine the myocardial apparatus of the right ventricle intraoperative right auricular tissue was harvested for stepwise skinned fiber force measurements. Results Patients with TAPSE < 20 mm had a higher incidence of DM (55 vs. 34%, p = 0.018), preoperative AFib (43 vs. 16%, p < 0.001), reduced GFR (67 ± 18 vs. 77 ± 24 ml/min/1.73 m2, p = 0.013), larger LA area (22 ± 6 vs. 20 ± 5 cm2, p = 0.005) and reduced LVEF (50 vs. 55%, p = 0.008). Furthermore, higher serum ADMA (0.70 ± 0.13 vs. 0.65 ± 0.15 µmol/l, p = 0.046) and higher serum Pentraxin-3 levels (3371 ± 1068 vs. 2681 ± 1353 pg/dl, p = 0.004) were observed in these patients. Skinned fiber force measurements showed significant lower values at almost every step of calcium concentration (pCa 4.52 to pCa 5.5, p < 0.01 and pCa 5.75–6.0, p < 0.05). Multivariable analysis revealed DM (OR 2.53, CI 1.12–5.73, Euro Score II (OR 1.34, CI 1.02–1.78), preoperative AF (OR 4.86, CI 2.06–11.47), GFR (OR 7.72, CI 1.87–31.96), albumin (OR 1.56, CI 0.52–2.60), Pentraxin-3 (OR 19.68, CI 14.13–25.24), depressed LVEF (OR 8.61, CI 6.37–10.86), lower force values: (pCa 5.4; OR 2.34, CI 0.40–4.29 and pCa 5.2; OR 2.00, CI 0.39–3.60) as predictors for clinical inapparent right heart dysfunction. Conclusions These preliminary data showed that inapparent right heart dysfunction in CAD is already associated with reduced force development of the contractile apparatus.
Collapse
Affiliation(s)
- C Bening
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany. .,Comprehensive Heart Failure Centre (CHFC) Würzburg, University of Wuerzburg, Wuerzburg, Germany.
| | - V L Sales
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - K Alhussini
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany.,Comprehensive Heart Failure Centre (CHFC) Würzburg, University of Wuerzburg, Wuerzburg, Germany
| | - D Radakovic
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - R Cris Benitez
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - N Madrahimov
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - D Keller
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany
| | - R Leyh
- Department of Thoracic and Cardiovascular Surgery, Zentrum Operative Medizin, University of Wuerzburg, Oberduerrbacherstr. 6, 97080, Wuerzburg, Germany.,Comprehensive Heart Failure Centre (CHFC) Würzburg, University of Wuerzburg, Wuerzburg, Germany
| |
Collapse
|
10
|
Madrahimov N, Cristaldo RB, Du S, Keller D, Malikov M, Zaiatc E, Klapproth A, Penov K, Hamouda K, Leyh R, Bening C. Novel Post Mortal Organ Preserving ECMO in Non–Heart‐Beating Mouse. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
11
|
Bening C, Alhussini K, Cristaldo RB, Madrahimov N, Radakovic D, Magyar A, Hassan M, Penov K, Leyh R. Correlation of DHEA as a Precursor for Androgens and Estrogens with Echocardiographic Function and Dimensions of the Heart. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
12
|
Madrahimov N, Du S, Cristaldo RB, Keller D, Malikov M, Zaiatc E, Klapproth A, Penov K, Hamouda K, Leyh R, Bening C. Mouse Model of Heart Organ Care System to Study Ex Vivo Cardio Protection and Reperfusion in Cadaveric Heart Donation. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
13
|
Knöfel AK, Siemeni T, Ius F, Madrahimov N, Sommer W, Avsar M, Salman J, Haverich A, Falk C, Warnecke G. The Effect of Ex Vivo Preservation and Regulatory T Cells on the Development of Transplant Arteriosclerosis in a Humanized Mouse Model. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Natanov R, Mogaldea A, Madrahimov N, Haverich A, Fleissner F, Kühn C. Inter-Hospital Awake Patient Transport on Extracorporeal Membrane Oxygenation. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
15
|
Natanov R, Madrahimov N, Kirchhoff F, Haverich A, Kühn C. Strategies for Weaning of Circulatory Support in Patients with Postcardiotomy Syndrome. Thorac Cardiovasc Surg 2021. [DOI: 10.1055/s-0041-1725615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
16
|
Sales V, Wendel J, Gorski A, Alhussini K, Madrahimov N, Penov K, Radakovic D, Magyar A, Leyh R, Bening C. Single Carotid Cannulation for Selective Antegrade Cerebral Perfusion: A Safe and Effective Tailored Approach in Moderate-Risk Patients undergoing Contemporary Minimally Invasive Primary Aortic Arch Repair. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
17
|
Madrahimov N, Alhussini K, Sales V, Radakovic D, Penov K, Benitez Cristaldo R, Hoffmann J, Hassan M, Leyh R, Bening C. First-Ever Built Magnetically Driven Micropump Using 3D Technology for VAD and ECMO Studies in a Mouse Model. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
18
|
Madrahimov N, Bening C, Alhussini K, Sales V, Radakovic D, Penov K, Benitez Cristaldo R, Magyar A, Hoffmann J, Leyh R. The Potential Role of Magnetorheological Elastomers as “Smart Materials” in the Future Design of the Artificial Heart and Circulatory Support. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
19
|
Alhussini K, Sales V, Benitez Cristaldo R, Penov K, Madrahimov N, Radakovic D, Magyar A, Hassan M, Leyh R, Bening C. Comparison of Half Relaxation Time and Peak Force of Intact Muscle Fibers of Elective CABG Patients with Diastolic Dysfunction Grade I–III. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
20
|
Penov K, Westarp E, Radakovic D, Sales V, Madrahimov N, Alhussini K, Gorski A, Aleksic I, Bening C, Leyh R. Surgery for Aortic and Aortic Valve Pathology in Bicuspid and Tricuspid Valves Has Excellent Short- and Long-Term Outcomes: A Single-Center Experience. Thorac Cardiovasc Surg 2020. [DOI: 10.1055/s-0040-1705405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
21
|
Knofel AK, Siemeni T, Madrahimov N, Sommer W, Avsar M, Ius F, Jansson K, Ahrens L, Salman J, Kühn C, Tudorache I, Haverich A, Falk C, Warnecke G. Lung Transplant Recipients with Severe Primary Graft Dysfunction Developed Decreased Transplant Arteriosclerosis in Humanized Mice Models. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- A.-K. Knofel
- Medical School Hannover, HTTG, Hannover, Germany
| | - T. Siemeni
- Medical School Hannover, HTTG, Hannover, Germany
| | | | - W. Sommer
- Medical School Hannover, HTTG, Hannover, Germany
| | - M. Avsar
- Medical School Hannover, HTTG, Hannover, Germany
| | - F. Ius
- Medical School Hannover, HTTG, Hannover, Germany
| | - K. Jansson
- Medical School Hannover, HTTG, Hannover, Germany
| | - L. Ahrens
- Medical School Hannover, HTTG, Hannover, Germany
| | - J. Salman
- Medical School Hannover, HTTG, Hannover, Germany
| | - C. Kühn
- Medical School Hannover, HTTG, Hannover, Germany
| | - I. Tudorache
- Medical School Hannover, HTTG, Hannover, Germany
| | - A. Haverich
- Medical School Hannover, HTTG, Hannover, Germany
| | - C. Falk
- Medical School Hannover, Institut für Transplantationsimmunologie, Hannover, Germany
| | - G. Warnecke
- Medical School Hannover, HTTG, Hannover, Germany
| |
Collapse
|
22
|
Madrahimov N, Khalikov A, Boyle C, Hoeffler K, Knofel AK, Kuehn C, Maus U, Haverich A. Novel Acute and Survival Models of Veno-venous and Veno-arterial ECMO in a Mouse as an Essential Research Tool with Clinical Relevancy in the Study of End-Stage Heart and Lung Diseases. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- N. Madrahimov
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - A. Khalikov
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - C. Boyle
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - K. Hoeffler
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - A.-K. Knofel
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - C. Kuehn
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - U. Maus
- Department of Pneumology, Hannover Medical School, Hannover, Germany
| | - A. Haverich
- Department of Cardiothoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| |
Collapse
|
23
|
Nakagiri T, Ahrens L, Lienenklaus S, Knöfel A, Jonigk D, Madrahimov N, Jannson K, Haverich A, Warnecke G. Computed Tomography for Rejection Monitoring in a Murine Orthotopic Lung Transplantation Model. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
24
|
Siemeni T, Knöfel A, Ius F, Salman J, Madrahimov N, Sommer W, Avsar M, Jansson K, Kühn C, Falk C, Tudorache I, Haverich A, Warnecke G. Linking Early Humoral Sensitization in Lung Transplant Recipients with Even Earlier Cellular Alloreactivity in Humanized Mice. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
25
|
Nakagiri T, Ahrens L, Lienenklaus S, Knöfel AK, Jonigk D, Madrahimov N, Jannson K, Haverich A, Warnecke G. Computed Tomography for Rejection Monitoring in a Murine Orthotopic Lung Transplantation Model. Thorac Cardiovasc Surg 2018. [DOI: 10.1055/s-0038-1628073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- T. Nakagiri
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - L. Ahrens
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - S. Lienenklaus
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - A.-K. Knöfel
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - D. Jonigk
- Institute of Pathology, Hannover Medical School, Hannover, Germany
| | - N. Madrahimov
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - K. Jannson
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - A. Haverich
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - G. Warnecke
- Department of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| |
Collapse
|
26
|
Knöfel A, Siemeni T, Madrahimov N, Sommer W, Avsar M, Ius F, Jansson K, Pauksch L, Salman J, Tudorache I, Kühn C, Haverich A, Falk C, Warnecke G. Cytokine Expression in Humanized Mice Reflects Development of Primary Graft Dysfunction in Lung Transplant Recipients. Thorac Cardiovasc Surg 2017. [DOI: 10.1055/s-0037-1598935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
| | - T. Siemeni
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | | | - W. Sommer
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | - M. Avsar
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | - F. Ius
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | - K. Jansson
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | - L. Pauksch
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | - J. Salman
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | | | - C. Kühn
- MHH, exp. HTTG-Chirurgie, Hannover, Germany
| | | | - C. Falk
- MHH, Transplantationsimmunologie, Hannover, Germany
| | | |
Collapse
|
27
|
Siemeni T, Knöfel AK, Madrahimov N, Sommer W, Avsar M, Salman J, Ius F, Frank N, Büchler G, Jonigk D, Jansson K, Maus U, Tudorache I, Falk CS, Haverich A, Warnecke G. In Vivo Development of Transplant Arteriosclerosis in Humanized Mice Reflects Alloantigen Recognition and Peripheral Treg Phenotype of Lung Transplant Recipients. Am J Transplant 2016; 16:3150-3162. [PMID: 27273729 DOI: 10.1111/ajt.13905] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 05/24/2016] [Accepted: 05/27/2016] [Indexed: 01/25/2023]
Abstract
Experimentally, regulatory T cells inhibit rejection. In clinical transplantations, however, it is not known whether T cell regulation is the cause for, or an epiphenomenon of, long-term allograft survival. Here, we study naïve and alloantigen-primed T cell responses of clinical lung transplant recipients in humanized mice. The pericardiophrenic artery procured from human lung grafts was implanted into the aorta of NODrag-/- /IL-2rγc-/- mice reconstituted with peripheral blood mononuclear cells (PBMCs) from the respective lung recipient. Naïve or primed allogeneic PBMCs procured 21 days post-lung transplantation with or without enriching for CD4+ CD25high T cells were used. Transplant arteriosclerosis was assessed 28 days later by histology. Mice reconstituted with alloantigen-primed PBMCs showed significantly more severe transplant arteriosclerosis than did mice with naïve PBMCs (p = 0.005). Transplant arteriosclerosis was equally suppressed by enriching for autologous naïve (p = 0.012) or alloantigen-primed regulatory T cells (Tregs) (p = 0.009). Alloantigen priming in clinical lung recipients can be adoptively transferred into a humanized mouse model. Transplant arteriosclerosis elicited by naïve or alloantigen-primed PBMCs can be similarly controlled by potent autologous Tregs. Cellular therapy with expanded autologous Tregs in lung transplantation might be a promising future strategy.
Collapse
Affiliation(s)
- T Siemeni
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - A-K Knöfel
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany.,German Centre for Lung Research, BREATH Site, Hannover Medical School, Hannover, Germany
| | - N Madrahimov
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - W Sommer
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany.,German Centre for Lung Research, BREATH Site, Hannover Medical School, Hannover, Germany
| | - M Avsar
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - J Salman
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - F Ius
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - N Frank
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - G Büchler
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - D Jonigk
- Institute for Pathology, Hannover Medical School, Hannover, Germany
| | - K Jansson
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - U Maus
- German Centre for Lung Research, BREATH Site, Hannover Medical School, Hannover, Germany.,Department of Experimental Pneumology, Hannover Medical School, Hannover, Germany
| | - I Tudorache
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - C S Falk
- Institute of Transplant Immunology, IFB-Tx, Hannover Medical School, Hannover, Germany
| | - A Haverich
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany.,German Centre for Lung Research, BREATH Site, Hannover Medical School, Hannover, Germany
| | - G Warnecke
- Division of Cardiac, Thoracic, Transplantation and Vascular Surgery, Hannover Medical School, Hannover, Germany. .,German Centre for Lung Research, BREATH Site, Hannover Medical School, Hannover, Germany.
| |
Collapse
|
28
|
Siemeni T, Knöfel A, Madrahimov N, Sommer W, Bobylev D, Avsar M, Ius F, Jansson K, Salman J, Tudorache I, Kühn C, Haverich A, Warnecke G. Leukocytes Transfer More Severe Rejection from Lung Transplant Recipients with Severe PGD into Humanized Mice and Are Sensitive to T Cell Regulation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
|
29
|
Siemeni T, Knöfel A, Madrahimov N, Sommer W, Avsar M, Ius F, Jansson K, Salman J, Tudorache I, Kühn C, Haverich A, Warnecke G. Leukocytes Transfer Activation of More Severe Rejection from Lung Transplant Recipients with Severe Primary Graft Dysfunction into Humanized Mice are Sensitive to T Cell Regulation. Thorac Cardiovasc Surg 2016. [DOI: 10.1055/s-0036-1571599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
30
|
Knoefel A, Siemeni T, Frank N, Madrahimov N, Jonigk D, Salman J, Sommer W, Jansson K, Avsar M, Haverich A, Warnecke G. Elevated Peripheral Blood Counts of CD127 Low, FoxP3+ CD4+CD25 High T Cells in Lung Transplant Recipients Leads to Less Severe Donor-Specific Transplant Arteriosclerosis in Humanized Mice. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
|
31
|
Siemeni T, Knoefel A, Madrahimov N, Sommer W, Frank N, Jansson K, Ius F, Salman J, Avsar M, Tudorache I, Kuehn C, Haverich A, Warnecke G. In Vivo Development of Transplant Arteriosclerosis in Humanized Mice Reflects Alloantigen Recognition of Lung Transplant Recipients and Is Controlled By Autologous Regulatory T Cells. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
32
|
Siemeni T, Knöfel AK, Madrahimov N, Sommer W, Tudorache I, Kühn C, Avsar M, Ius F, Janson K, Frank N, Salman J, Haverich A, Warnecke G. Transplant Arteriosclerosis in Humanized Mice Reflects Alloantigen Recognition of Lung Transplant Recipients and is Controlled by Autologous Regulatory T Cells. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
33
|
Knöfel AK, Siemeni T, Frank N, Madrahimov N, Salman J, Sommer W, Jansson K, Jonigk D, Avsar M, Haverich A, Warnecke G. Lung Transplant Recipients with Elevated Peripheral Blood Counts of CD127low, FoxP3+ and CTLA4+ CD4+CD25high T Cells Develop Less Severe Donor-Specific Transplant Arteriosclerosis in Humanized Mice. Thorac Cardiovasc Surg 2015. [DOI: 10.1055/s-0035-1544510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
34
|
Meier M, Bankstahl JP, Rodt T, Koestner W, Madrahimov N, Knöfel AK, Haverich A, Bengel FM, Wacker F, Bleich A. Combined ultra highfield MRI and SPECT-CT are promising tools in interdisciplinary research on animal models of human lung diseases. Pneumologie 2014. [DOI: 10.1055/s-0034-1376848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
35
|
Knöfel A, Sommer W, Madrahimov N, Jansson K, Avsar M, Warnecke G, Haverich A. Physical Exercise Reduces Transplant Arteriosclerosis in a Fully Allogeneic Mouse Aorta Transplantation Model. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
36
|
Madrahimov N, Cebotari S, Solovyeva A, Knoefel A, Hoeffler C, Warnecke G, Tudorache I, Haverich A. Cardiopulmonary bypass in a mouse: novel small animal model. Thorac Cardiovasc Surg 2014. [DOI: 10.1055/s-0034-1367248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
37
|
Knöfel AK, Frank N, Madrahimov N, Salman J, Sommer W, Jansson K, Ziehme P, Jonigk D, Avsar M, Haverich A, Warnecke G. T Cell Responses in Lung Transplantion – Role of Alloantigen Priming and Regulation on Development of Transplant Arteriosclerosis in a Humanized Mouse Model. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
38
|
Madrahimov N, Knöfel AK, Frank N, Haverich A, Warnecke G. Orthotopic lung transplantation in mice: Development of a bronchiolitis obliterans model. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
39
|
Knöfel AK, Madrahimov N, Salman J, Büchler G, Avsar M, Sommer W, Jonigk D, Haverich A, Warnecke G. Rejection of bronchus transplants in humanized mice is regulated by allogeneic CD4+CD25+ T cells. Thorac Cardiovasc Surg 2013. [DOI: 10.1055/s-0032-1332602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
40
|
Büchler G, Knöfel AK, Madrahimov N, Dreckmann K, Avsar M, Sommer W, Ziehme P, Jonigk D, Länger F, Gottlieb J, Haverich A, Strüber M, Warnecke G. The Induction of Stable Peripheral Tolerance Is a Result of Alloantigen Priming and Independent from Pretransplant T Cells in a Porcine Lung Transplantation Model. Transplantation 2012. [DOI: 10.1097/00007890-201211271-00914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
41
|
Knöfel AK, Madrahimov N, Büchler G, Sommer W, Avsar M, Haverich A, Warnecke G. Physical exercise reduces transplant arteriosclerosis in a fully allogeneic mouse aorta transplantation model. Thorac Cardiovasc Surg 2012. [DOI: 10.1055/s-0031-1297502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
42
|
Sommer W, Dreckmann K, Avsar M, Knöfel AK, Madrahimov N, Gottlieb J, Karstens J, Haverich A, Strüber M, Warnecke G. Modification of a preconditioning protocol for achieving immune tolerance in an allogeneic porcine lung transplantation model: Low dose total lymphoid irradiation vs. whole body irradiation. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
43
|
Warnecke G, Avsar M, Madrahimov N, Knöfel AK, Dreckmann K, Sommer W, Gottlieb J, Karstens J, Strüber M, Haverich A. Regulatory T cells in allogeneic porcine lung transplantation- in vivo function and impact on long term graft survival. Thorac Cardiovasc Surg 2011. [DOI: 10.1055/s-0030-1269182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
44
|
Knöfel A, Madrahimov N, Dreckmann K, Avsar M, Sommer W, Jonigk D, Haverich A, Strueber M, Warnecke G. ALLOGENEIC CD4+CD25+ T CELLS REGULATE REJECTION OF BRONCHUS TRANSPLANTS IN PORCINIZED MICE. Transplantation 2010. [DOI: 10.1097/00007890-201007272-01244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
45
|
Warnecke G, Avsar M, Dreckmann K, Knöfel AK, Madrahimov N, Thissen S, Kruse B, Ziehme P, Sommer W, Gottlieb J, Simon A, Karstens JH, Haverich A, Strüber M. Peripheral tolerance in porcine lung transplantation induced by splenocyte infusion and low dose irradiation – modifications of the protocol for improved clinical feasibility. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1247083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
46
|
Avsar M, Warnecke G, Dreckmann K, Knoefel AK, Madrahimov N, Thissen S, Kruse B, Ziehme P, Sommer W, Gottlieb J. 348: Splenocyte Infusion and Low Dose Irradiation Induce Peripheral Tolerance in Porcine Lung Transplantation – Modifications of the Protocol for Improved Clinical Feasibility. J Heart Lung Transplant 2010. [DOI: 10.1016/j.healun.2009.11.361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
47
|
Madrahimov N, Knöfel AK, Warnecke G, Avsar M, Dreckmann K, Thissen S, Kruse B, Haverich A, Strüber M. Allogeneic porcine CD4+CD25+ T cells regulate the development of transplant arteriosclerosis in porcinized mice. Thorac Cardiovasc Surg 2010. [DOI: 10.1055/s-0029-1247081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
48
|
Dahmen U, Radtke A, Schröder T, Chi H, Madrahimov N, Lu M, Schenk A, Peitgen KH, Dirsch O. Median liver lobe of woodchuck as a model to study hepatic outflow obstruction: a pilot study. Liver Int 2008; 28:1236-44. [PMID: 18544125 DOI: 10.1111/j.1478-3231.2008.01797.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND Hepatic vein outflow obstruction represents an important clinical problem in living-liver transplantation. An animal model is required to study the influence of outflow obstruction on the intrahepatic regulation of liver perfusion and the subsequent effects on liver injury and recovery during liver regeneration. The size of woodchucks enables the use of standard clinical imaging procedures. AIM This study aims at describing hepatic vascular and territorial anatomy of the woodchuck liver based on a virtual three-dimensional (3D) visualization of the hepatic vascular tree. METHODS Woodchucks (n=6) were subjected to an all-in-one computed tomography (CT) after contrasting the vascular and the biliary tree. CT-images were used for 3D-reconstruction of hepatic and portal veins and calculation of the corresponding portal and hepatic vein territories and their respective volume using hepavision (MeVisLab). A virtual resection was performed following the Cantlie-line and territories at risk were calculated. RESULTS The median lobe of the woodchuck liver has a similar vascular supply and drainage as the human liver with two portal (right and left median portal vein) and three hepatic veins (left, middle and right median hepatic vein). The corresponding portal and hepatic vein subterritories are of a similar relative size compared with the human liver. Virtual splitting of the median lobe of the woodchuck liver revealed areas at risk of focal outflow obstruction, as observed clinically. CONCLUSION The median liver lobe of the woodchuck represents, to a small extent, the hepatic vascular anatomy of the human liver and is therefore a suitable potential model to correlate repeated imaging of impaired liver perfusion with histomorphological findings of liver damage and regeneration.
Collapse
Affiliation(s)
- Uta Dahmen
- Department of General, Visceral and Transplantation Surgery, University Hospital of Essen, Essen, Germany.
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Dahmen U, Hall CA, Madrahimov N, Milekhin V, Dirsch O. Regulation of hepatic microcirculation in stepwise liver resection. Acta Gastroenterol Belg 2007; 70:345-351. [PMID: 18330090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
BACKGROUND After liver resection a small-for-size syndrome may result from the reduction of liver volume and additional liver damage caused by hepatic hyperperfusion. Therefore the influence of the extent of liver resection on liver perfusion is investigated. MATERIAL AND METHODS A stepwise liver resection (removal of 30%, 70%, 90%, 95% and 97% of the liver) was performed under inhalation anaesthesia with isoflurane in 6 male Lewis rats. Besides systemic arterial and venous blood pressure the portal pressure and flow was measured and the sinusoidal perfusion was visualized. Sinusoidal diameter, intersinusoidal diameter and functional capillary density were determined. RESULTS AND CONCLUSIONS A decrease in the portal flow but an increase in the portal pressure was observed. Sinusoidal diameter showed a steady but low increase when up to 70% of the liver was removed but a high increase after 90% or more of the liver was resected. This indicates a decompensation of a regulatory mechanism of sinusoidal perfusion.
Collapse
Affiliation(s)
- U Dahmen
- Department of General, Visceral and Transplantation Surgery, University Hospital Essen, Essen, Germany.
| | | | | | | | | |
Collapse
|