|
1
|
Lau S, Eicke D, Carvalho Oliveira M, Wiegmann B, Schrimpf C, Haverich A, Blasczyk R, Wilhelmi M, Figueiredo C, Böer U. Low Immunogenic Endothelial Cells Maintain Morphological and Functional Properties Required for Vascular Tissue Engineering. Tissue Eng Part A 2018; 24:432-447. [DOI: 10.1089/ten.tea.2016.0541] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Affiliation(s)
- Skadi Lau
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Germany
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Dorothee Eicke
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Excellence Cluster “From Regenerative Biology to Reconstructive Therapy” (REBIRTH), Hannover Medical School, Hannover, Germany
| | - Marco Carvalho Oliveira
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Excellence Cluster “From Regenerative Biology to Reconstructive Therapy” (REBIRTH), Hannover Medical School, Hannover, Germany
| | - Bettina Wiegmann
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Claudia Schrimpf
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Axel Haverich
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Germany
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
- Excellence Cluster “From Regenerative Biology to Reconstructive Therapy” (REBIRTH), Hannover Medical School, Hannover, Germany
| | - Rainer Blasczyk
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Excellence Cluster “From Regenerative Biology to Reconstructive Therapy” (REBIRTH), Hannover Medical School, Hannover, Germany
| | - Mathias Wilhelmi
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Germany
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| | - Constança Figueiredo
- Institute for Transfusion Medicine, Hannover Medical School, Hannover, Germany
- Excellence Cluster “From Regenerative Biology to Reconstructive Therapy” (REBIRTH), Hannover Medical School, Hannover, Germany
| | - Ulrike Böer
- Lower Saxony Centre for Biomedical Engineering, Implant Research and Development (NIFE), Hannover Medical School, Hannover, Germany
- Division for Cardiothoracic, Transplant and Vascular Surgery, Hannover Medical School, Hannover, Germany
| |
Collapse
|
|
2
|
Lobo HG, Lobo JG, Pimentel MD, Silva BGB, de Souza CS, Montenegro ML, Leitão MCDA, Jamacuru FVF. Intraoperative Analysis of Flow Dynamics in Arteriovenous Composite Y Grafts. Braz J Cardiovasc Surg 2016; 31:351-357. [PMID: 27982343 PMCID: PMC5144566 DOI: 10.5935/1678-9741.20160053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 08/04/2016] [Indexed: 11/20/2022] Open
Abstract
Objective Composite graft of left internal thoracic artery and great saphenous vein in
revascularization of the left coronary system is a technique well described
in literature. The aim of this study is to analyze blood flow dynamics in
this configuration of composite graft especially in what concerns left
internal thoracic artery's adaptability and influence of great saphenous
vein segment on left internal thoracic artery's flow. Methods Revascularization of left coronary system with composite graft, with left
internal thoracic artery revascularizing the anterior interventricular
artery and a great saphenous vein segment, anastomosed to the left internal
thoracic artery, revascularizing another branch of the left coronary system,
was performed in 23 patients. Blood flow was evaluated by transit time
flowmetry in all segments of the composite graft (left internal thoracic
artery proximal segment, left internal thoracic artery distal segment and
great saphenous vein segment). Measures were performed in baseline condition
and after dobutamine-induced stress, without and with non-traumatic
temporary clamping of the distal segments of the composite graft. Results Pharmacological stress resulted in increase of blood flow values in the
analyzed segments (P<0.05). Non-traumatic temporary
clamping of great saphenous vein segment did not result in statistically
significant changes in the flow of left internal thoracic artery distal
segment, both in baseline condition and under pharmacological stress.
Similarly, non-traumatic temporary clamping of left internal thoracic artery
distal segment did not result in statistically significant changes in great
saphenous vein segment flow. Conclusion Composite grafts with left internal thoracic artery and great saphenous vein
for revascularization of left coronary system, resulted in blood flow
dynamics with physiological adaptability, both at rest and after
pharmacological stress, according to demand. Presence of great saphenous
vein segment did not alter physiological blood flow dynamics in distal
segment of left internal thoracic artery.
Collapse
Affiliation(s)
- Heraldo Guedis Lobo
- Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil; Hospital de Messejana Dr. Carlos Alberto Studart Gomes, Fortaleza, CE, Brazil
| | - José Glauco Lobo
- Department of Surgery, Universidade Federal do Ceará (UFC), Fortaleza, CE, Brazil
| | | | | | | | | | | | | |
Collapse
|
|
3
|
Arrigoni SC, Mecozzi G, Grandjean JG, Hillege JL, Kappetein AP, Mariani MA. Off-pump no-touch technique: 3-year results compared with the SYNTAX trial. Interact Cardiovasc Thorac Surg 2015; 20:601-4. [DOI: 10.1093/icvts/ivv012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 12/22/2014] [Indexed: 11/14/2022] Open
|
|
4
|
Lau S, Schrimpf C, Klingenberg M, Helfritz F, Aper T, Haverich A, Wilhelmi M, Böer U. Evaluation of autologous tissue sources for the isolation of endothelial cells and adipose tissue-derived mesenchymal stem cells to pre-vascularize tissue-engineered vascular grafts. ACTA ACUST UNITED AC 2015. [DOI: 10.1515/bnm-2015-0014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractCurrently used synthetic vascular grafts bear a high infection risk due to insufficient microvascularization of the graft wall disabling the infiltration of immune cells. Tissue-engineered grafts with a functional pre-vascularization thus would be desirable. However, autologous tissue sources for capillary forming cells need to be evaluated. Here, peripheral blood outgrowth endothelial cells (PB-OEC) from 17 healthy donors and pericyte-like mesenchymal stem cells derived from adipose tissue (ASC) of 17 patients scheduled for visceral surgery were characterized and investigated regarding their ability to form capillary-like networks in plasma-derived fibrin gels. To obtain proliferating PB-OEC with endothelial cell-specific properties (CD31-, VE-cadherin-expression, ac-LDL uptake and three-dimensional (3D)-tube formation in fibrin gels) both enrichment of CD34
Collapse
|