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Castells-Sala C, Pérez ML, Agustí E, Aiti A, Tarragona E, Navarro A, Tabera J, Fariñas O, Pomar JL, Vilarrodona A. Last twenty-years activity of cardiovascular tissue banking in Barcelona. Cell Tissue Bank 2024; 25:11-26. [PMID: 36849631 PMCID: PMC9970124 DOI: 10.1007/s10561-022-10059-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/04/2022] [Indexed: 03/01/2023]
Abstract
The Barcelona Tissue Bank was established from the merge of two previous multi-tissue banks. Potential donors are screened by Donor Center staff and multi-tissue retrieval is performed by specialized own teams. Tissue processing and preservation is performed in clean room facilities by specialised personnel. After quality control of both donor and all tissues results, the heart valves and vascular segments are stored until medical request. The aim of this report is to present the cardiovascular tissue activity and retrospectively evaluate the outcomes of the changes performed in last 20 years. Cardiovascular tissue from 4088 donors was received, specifically 3115 hearts and 2095 vascular segments were processed and evaluated. A total of 48% of the aortic valves, 68% of the pulmonary valves and 75% of the vascular segments were suitable for transplant. The main reason for discarding tissue was macroscopic morphology followed by microbiological results, for both valves and arteries. Altogether, 4360 tissues were distributed for transplantation: 2032 (47%) vascular segments, 1545 (35%) pulmonary valves and 781 (18%) aortic valves. The most common indication for aortic valve surgery was the treatment of endocarditis, while for pulmonary valves, it was congenital malformation reconstruction. Vascular segments were mainly used for reconstruction after ischemia. During this period, a number of changes were made with the goal of enhancing tissue quality, safety and efficacy. These improvements were achieved through the use of a new antibiotic cocktail, increasing of donor age criteria and changing the microbiological control strategy.
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Affiliation(s)
- C. Castells-Sala
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
- Barcelona Tissue Bank (BTB), Banc de Sang i Teixits (BST, GenCAT) Passeig Taulat 116, E-08005 Barcelona, Spain
| | - M. L. Pérez
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Vall Hebron Institute of Research (VHIR), Barcelona, Spain
| | - E. Agustí
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Vall Hebron Institute of Research (VHIR), Barcelona, Spain
| | - A. Aiti
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
| | - E. Tarragona
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
| | - A. Navarro
- Organització Catalana de Trasplantaments (OCATT), Barcelona, Spain
| | - J. Tabera
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| | - O. Fariñas
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Biomedical Research Institute (IIB-Sant Pau; SGR1113), Barcelona, Spain
| | - J. L. Pomar
- Institute for Cardiovascular Diseases. Hospital Clinic de Barcelona, University of Barcelona, Barcelona, Spain
| | - A. Vilarrodona
- Barcelona Tissue Bank, Banc de Sang i Teixits (BST), Barcelona, Spain
- Vall Hebron Institute of Research (VHIR), Barcelona, Spain
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Jashari R, Bouzet V, Alcaraz Blanco MJ, Oleffe A, Lecocq E, Mastrobuoni S. Vascular allografts for clinical application in Europe: assessment of 30 years of experience with vascular tissue banking in Brussels. Cell Tissue Bank 2023; 24:613-625. [PMID: 36595150 PMCID: PMC9809507 DOI: 10.1007/s10561-022-10063-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/06/2022] [Indexed: 01/04/2023]
Abstract
Vascular tissue banking has been carried out in Brussels for over 30 years in compliance with EU and Swiss tissue banking regulations. A total of 2.765 vascular tissue donations were performed in Belgian, French, Netherlands and Suisse transplant centres: 547(20%), 1.013(37%) and 1.205(43%) during the first, second and third periods, respectively. 85% and 18% increase in donations during the second and third decades compared to previous one, were remarkable. Of the 7.066 evaluated vascular tissues, 2.407(227, 921 and 1.259) were discarded (34.1%), whereas 4.659(523, 1.861 and 2.275) accepted (65.9%) during the respective period. Of the 92 donated veins, 44(47.8%) were discarded and 48(52.2%) accepted. Allografts available for clinical application were stored in vapours of liquid nitrogen. A total of 4.636 allografts were delivered and transplanted for cases of infection (58%), critical limb ischaemia (16%) and congenital cardiac surgery (15%). Thirty veins were implanted. The progressive increases in donations of 20%, 37% and 43% and in transplantations of 20.8%, 34.6% and 45% during the first, second and third periods, respectively, were remarkable. Complications were reported after transplantation and these included acute rejection of two femoral arteries one month after transplantation. We conclude that the donation and transplantation of cryopreserved vascular allografts was stable with a progressive increase over time. Allografts were used predominantly for the treatment of infection, limb salvage for critical ischaemia and for neonates and infants with congenital cardiac malformation. Immune related rejection was observed. This should be a subject of future investigation.
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Affiliation(s)
- Ramadan Jashari
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
| | - Vanessa Bouzet
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
| | - Maria-Josee Alcaraz Blanco
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
| | - Alison Oleffe
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
| | - Emilie Lecocq
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
| | - Stefano Mastrobuoni
- European Homograft Bank (EHB), Cliniques Universitaires St. Luc (UCL), Av. Emmanuel Mounier 49, Tour Rosalind Franklin (Entrée F), Route 703, 2E Étage, 1200 Brussels, Belgium
- Department of Cardiac Surgery, Hospital Saint Luc, UCL, Brussels, Belgium
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Ren ZY, Pan B, Wang FF, Lyu SC, He Q. Effects of different preservation methods of human iliac veins. Cell Tissue Bank 2023; 24:571-582. [PMID: 36441442 DOI: 10.1007/s10561-022-10055-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 11/18/2022] [Indexed: 11/30/2022]
Abstract
With the progress of vascular anastomosis technology, the radical resection surgery of cancer combining with vascular resection and reconstruction has been focused by surgeon. As a natural substitute material for blood vessel, vascular allografts have good vascular compliance and histocompatibility. Generally, the donated veins could not be used immediately, and need to be well preserved. So, it is greatly significant to do research in the preservation effects of different preservation methods on veins. In this study, the effects of different preservative methods of human iliac veins were compared and analyzed in terms of cell viability, vascular wall structure and tension resistance. The donated human iliac veins were randomly divided into three groups: Cold Storage Group (4 °C) (CSG), Frozen Storage Group (-186 °C) (FSG)and Fresh Control Group (FCG). Six detection time-points of preservation for 1, 3, 5, 7, 14, 28 days were set respectively. There are ten samples in each group and each time-point separately. Survival and apoptosis of vascular cell were evaluated by MTT assay and Tunel fluorescence staining. Tensile test was used to evaluate mechanical properties of vessels. The changes of vascular endothelial cells, smooth muscle cells, collagen fibers and elastic fibers were evaluated by HE staining, Masson staining and EVG staining. Furthermore, the changes of organelles were observed by transmission electron microscope. With the extension of preservation period, the vascular cell viability and tension resistance of two groups decreased, and the apoptotic cells increased gradually. The apoptosis index of CSG was higher than FSG at each time point (P < 0.05). In terms of cell viability, CSG was higher within 3 days (P < 0.05), both groups were same between 3 and 14 days, and then CSG lower than FSG after 14 days (P < 0.05). In terms of tension resistance, CSG was stronger than FSG (P < 0.05) in first 7 days, both groups were same in 2nd week, and then CSG was weaker in 4th week (P < 0.05). In terms of vascular wall structure, in CSG, vascular endothelial cells were damaged and shed, smooth muscle cells were edema after 14 days, but the cell membrane and intercellular connection were still intact. In 4th week, endothelial cells were completely damaged and shed, the boundary of smooth muscle cell membrane was unclear, intercellular connection was damaged. Moreover, organelles were destroyed and disappeared, perinuclear condensation of chromatin was observed, and some cells had incomplete nuclear membrane or nuclear fragmentation; However, there were no obvious changes in the FSG within 28 days. Finally, local exfoliation and destruction of endothelial cells and edema-like changes of organelles were observed; the collagen fibers and elastic fibers of blood vessels in the two groups had no obvious damage and change within 28 days. For excised human iliac vein, cold and frozen storage can effectively preserve the cell viability, wall structure and tension resistance of blood vessels. With the extension of preservation time, the related performance of vessels declined in varying degrees. Within first week, the effect of cold storage is better than frozen storage, but frozen storage is significantly better than cold storage after 2 weeks.
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Affiliation(s)
- Zhang-Yong Ren
- Department of Hepatobiliary Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Bing Pan
- Department of Hepatobiliary Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Fang-Fei Wang
- Department of Hepatobiliary Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Shao-Cheng Lyu
- Department of Hepatobiliary Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qiang He
- Department of Hepatobiliary Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, China.
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Ren ZY, Lyu SC, Wang HX, Wang J, Zhou L, He Q, Lang R. Protective Effects of Different Hypothermal Preservation Solutions on Structure and Function of Isolated Rat Arteries. Curr Med Sci 2023; 43:768-778. [PMID: 37480414 DOI: 10.1007/s11596-023-2766-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 01/03/2023] [Indexed: 07/24/2023]
Abstract
OBJECTIVE With the increasing application of vascular reconstruction in surgical procedures, allogeneic vessels are becoming more popular in clinical practice due to their abundant sources, precise diameter matching, improved histocompatibility, and higher long-term patency rate. This study aimed to investigate the protective effect of various preservation solutions on the function and structure of the isolated rat abdominal aorta preserved under hypothermal conditions. METHODS The study utilized a total of 150 Sprague-Dawley (SD) rats, with 144 rats allocated to the experimental groups and 6 rats allocated to the control groups. The abdominal aorta of the rats was chosen as the subject of our research. The aorta in the experimental groups were randomly assigned to 4 groups: University of Wisconsin (UW) solution group, histidine-tryptophan-ketoglutarate (HTK) solution group, normal saline (NS) group, and sodium lactate Ringer's solution (RS) group. Samples were subjected to examination after preservation periods of 1 day, 3 days, 5 days, 7 days, 14 days, 30 days, and 90 days. Evaluation of vascular physiological function involved detecting and assessing vasoconstriction ability and measuring cell viability through the MTT test. Evaluation of the vascular wall structure involved tension tolerance tests and pathological staining. RESULTS The pathogen-positive rate in the HTK group and NS group at 1 month was 16.7%. Regarding the vascular skeleton structure, both the UW group and HTK group exhibited intact structures after 2 weeks of preservation, with slightly edematous collagen and elastic fibers, which was significantly better than that of the NS group and RS group. In terms of cell activity and contractile function, all preservation groups showed similar effects within 2 weeks. However, after 2 weeks, the UW group showed the most favorable preservation effect (P<0.05). In terms of vascular tension, different groups exhibited similar effects within 1 week. However, after 2 weeks, the UW group showed the best preservation effect (P<0.05). CONCLUSION All 4 types of preservation solution had a preservation effect on the structure and function of isolated blood vessels during short-term hypothermal preservation. However, after 2-week preservation, the UW solution was found to be the most suitable solution for the preservation of blood vessels.
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Affiliation(s)
- Zhang-Yong Ren
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Shao-Cheng Lyu
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Han-Xuan Wang
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Jing Wang
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Lin Zhou
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qiang He
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Ren Lang
- Department of Hepatobiliary and Pancreaticosplenic Surgery, Beijing Organ Transplant Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
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Peivandi AD, Martens S, Asfour B, Martens S. Grafts and Patches: Optimized but Not Optimal Materials for Congenital Heart Surgery. Pediatr Cardiol 2023; 44:996-1002. [PMID: 37038028 PMCID: PMC10224861 DOI: 10.1007/s00246-023-03153-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 03/20/2023] [Indexed: 04/12/2023]
Abstract
A variety of materials are available for the surgery of children with congenital heart defects. In addition to growth-related mismatch, degeneration of the material in particular frequently leads to reoperation. Therefore, the choice of conduits and patches should be made carefully. This article provides an overview of the most commonly implanted materials in pediatric cardiac surgery.Structural changes can be detected in all available materials. Depending on the age at implantation and the site of implantation, the extent and time course of material degeneration vary. Autologous material is still the gold standard in reconstructive surgery. Biological materials have largely replaced artificial materials in clinical use.The search for the ideal material continues. In pediatric cardiac surgery, there are only optimized but no optimal materials.
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Affiliation(s)
- Armin Darius Peivandi
- Department of Cardiothoracic Surgery, University Hospital Muenster, Muenster, Germany
| | - Sven Martens
- Department of Cardiothoracic Surgery, University Hospital Muenster, Muenster, Germany
| | - Boulos Asfour
- Department of Pediatric Cardiac Surgery, University Hospital Bonn, Bonn, Germany
| | - Sabrina Martens
- Department of Cardiothoracic Surgery, Division of Pediatric Cardiac Surgery, University Hospital Muenster, Muenster, Germany.
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6
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Ren Z, Cui S, Lyu S, Wang J, Zhou L, Jia Y, He Q, Lang R. Establishment of rat allogenic vein replacement model and pathological characteristics of the replaced vessels. Front Surg 2022; 9:984959. [PMID: 36157414 PMCID: PMC9500297 DOI: 10.3389/fsurg.2022.984959] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Accepted: 08/25/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundWith the advancement of vascular anastomosis techniques in recent years, radical surgery for tumors combined with venous vascular resection and reconstruction has been widely used. This study intends to establish two different rat vein replacement models, and further analyze the pathological changes of blood vessels after replacement.MethodsBrown-Norway (BN) rats were selected as donors and recipients, randomly divided into control group, cuff group (1-week group, 2-week group, and 4-week group), and suture group (1-week group, 2-week group, and 4-week group), with 6 rats in each group. The perioperative conditions, inner diameter, flow velocity and histopathological changes of the replaced vessels at different time points were analyzed.ResultsBoth cuff group and suture group can safely establish the rat vein replacement model. From the surgical operation, the operation time and venous cross-clamp time in the cuff group were shorter than those in the suture group (P < 0.05). At 2 and 4 weeks after operation, the diameter of suture group was wider than that of cuff group, and the flow rate was faster (P < 0.05). With prolonged postoperative survival, the wall of the replaced vessels underwent infiltration of CD4+ and CD8+ lymphocytes and high TGF-β1 gene expression. This leads to the proliferation of blood vessels and intimal layer. The results of vascular pathological staining showed that the infiltration degree of CD4+ lymphocytes at 2 weeks after operation and CD8+ lymphocytes at 4 weeks after operation in the suture group was lighter than that in the cuff group (P < 0.05). Meanwhile, TGF-β1 gene content at 4 weeks after operation in suture group was significantly lower than that in cuff group (P < 0.05).ConclusionCompared with cuff method, suture method is more suitable for the study of long-term pathological changes after vein replacement in rats. The main pathological changes in the long term after venous replacement in syngeneic background may be vascular fibrosis caused by inflammatory cell infiltration.
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Affiliation(s)
| | | | | | | | | | | | - Qiang He
- Correspondence: Ren Lang Qiang He
| | - Ren Lang
- Correspondence: Ren Lang Qiang He
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7
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Měřička P, Janoušek L, Benda A, Lainková R, Sabó J, Dalecká M, Prokšová P, Salmay M, Špunda R, Pecha O, Jandová M, Gregor J, Štěrba L, Špaček M, Lindner J. Cell Viability Assessment Using Fluorescence Vital Dyes and Confocal Microscopy in Evaluating Freezing and Thawing Protocols Used in Cryopreservation of Allogeneic Venous Grafts. Int J Mol Sci 2021; 22:ijms221910653. [PMID: 34638994 PMCID: PMC8509073 DOI: 10.3390/ijms221910653] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/24/2021] [Accepted: 09/26/2021] [Indexed: 12/29/2022] Open
Abstract
The authors present their contribution to the improvement of methods suitable for the detection of the freezing and thawing damage of cells of cryopreserved venous grafts used for lower limb revascularization procedures. They studied the post-thaw viability of cells of the wall of cryopreserved venous grafts (CVG) immediately after thawing and after 24 and 48 h culture at +37 °C in two groups of six CVG selected randomly for slow thawing in the refrigerator and rapid thawing in a water bath at +37 °C. The grafts were collected from multi-organ and tissue brain-dead donors, cryopreserved, and stored in a liquid nitrogen vapor phase for five years. The viability was assessed from tissue slices obtained by perpendicular and longitudinal cuts of the thawed graft samples using in situ staining with fluorescence vital dyes. The mean and median immediate post-thaw viability values above 70% were found in using both thawing protocols and both types of cutting. The statistically significant decline in viability after the 48-h culture was observed only when using the slow thawing protocol and perpendicular cutting. The possible explanation might be the “solution effect damage” during slow thawing, which caused a gentle reduction in the graft cellularity. The possible influence of this phenomenon on the immunogenicity of CVG should be the subject of further investigations.
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Affiliation(s)
- Pavel Měřička
- Tissue Bank, University Hospital, 500 05 Hradec Králové, Czech Republic; (P.M.); (M.J.); (J.G.); (L.Š.)
| | - Libor Janoušek
- Department of Transplantation Surgery, Institute for Clinical and Experimental Medicine, 140 21 Prague, Czech Republic;
| | - Aleš Benda
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, 252 50 Prague, Czech Republic; (A.B.); (J.S.); (M.D.); (P.P.)
| | - Radka Lainková
- 2nd Department of Surgery–Department of Cardiovascular Surgery, 1st Medical Faculty, Charles University and General University Hospital, 128 08 Prague, Czech Republic; (R.L.); (M.S.); (R.Š.); (J.L.)
| | - Ján Sabó
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, 252 50 Prague, Czech Republic; (A.B.); (J.S.); (M.D.); (P.P.)
| | - Markéta Dalecká
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, 252 50 Prague, Czech Republic; (A.B.); (J.S.); (M.D.); (P.P.)
- Department of Cell Biology, Charles University, Viničná 7, 128 00 Prague, Czech Republic
| | - Petra Prokšová
- Imaging Methods Core Facility at BIOCEV, Faculty of Science, Charles University, 252 50 Prague, Czech Republic; (A.B.); (J.S.); (M.D.); (P.P.)
| | - Myroslav Salmay
- 2nd Department of Surgery–Department of Cardiovascular Surgery, 1st Medical Faculty, Charles University and General University Hospital, 128 08 Prague, Czech Republic; (R.L.); (M.S.); (R.Š.); (J.L.)
| | - Rudolf Špunda
- 2nd Department of Surgery–Department of Cardiovascular Surgery, 1st Medical Faculty, Charles University and General University Hospital, 128 08 Prague, Czech Republic; (R.L.); (M.S.); (R.Š.); (J.L.)
| | - Ondřej Pecha
- Technology Centre of the Czech Academy of Sciences, 160 00 Prague, Czech Republic;
| | - Miroslava Jandová
- Tissue Bank, University Hospital, 500 05 Hradec Králové, Czech Republic; (P.M.); (M.J.); (J.G.); (L.Š.)
- Department of Anatomy, Histology and Embryology Medical Faculty in Hradec Králové, Charles University, 500 03 Hradec Králové, Czech Republic
| | - Jiří Gregor
- Tissue Bank, University Hospital, 500 05 Hradec Králové, Czech Republic; (P.M.); (M.J.); (J.G.); (L.Š.)
| | - Lubomír Štěrba
- Tissue Bank, University Hospital, 500 05 Hradec Králové, Czech Republic; (P.M.); (M.J.); (J.G.); (L.Š.)
| | - Miroslav Špaček
- 2nd Department of Surgery–Department of Cardiovascular Surgery, 1st Medical Faculty, Charles University and General University Hospital, 128 08 Prague, Czech Republic; (R.L.); (M.S.); (R.Š.); (J.L.)
- Correspondence:
| | - Jaroslav Lindner
- 2nd Department of Surgery–Department of Cardiovascular Surgery, 1st Medical Faculty, Charles University and General University Hospital, 128 08 Prague, Czech Republic; (R.L.); (M.S.); (R.Š.); (J.L.)
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8
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Microbiological assessment of arterial allografts processed in a tissue bank. Cell Tissue Bank 2021; 22:539-549. [PMID: 34549351 DOI: 10.1007/s10561-021-09951-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 08/09/2021] [Indexed: 10/20/2022]
Abstract
The transmission of microbial infection through tissue allografts is one of the main risks that must be controlled in tissue banks. Therefore, microbiological monitoring controls and validated protocols for the decontamination of tissues during processing have been implemented. This study is based on the evaluation of data from microbiological cultures of arteries (mainly long peripheral arteries) processed in the tissue bank of Valencia (Spain). Donors' profile, pre- and post-disinfection tissue samples were assessed. The presence of residual antibiotics in disinfected tissues was determined and the antimicrobial potential of these tissues was tested. Our overall contamination rate was 23.69%, with a disinfection rate (after antibiotic incubation) of 87.5%. Most (76.09%) of the microbial contaminants were identified as Gram positive. Arterial allografts collected from body sites affected by prior organ removal showed higher risk of contamination. Only vancomycin was detected as tissue release. The antimicrobial effect on Candida albicans was lower than that for bacterial species. Risk assessment for microbial contamination suggested the donor's skin and the environment during tissue collection as the main sources for allograft contamination. Antibiotic-disinfected arterial allografts showed antimicrobial potential.
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9
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Lin CH, Hsia K, Lu JH, Ma H. Cryopreserved allogenic vascular graft in free-flap reconstructive microsurgery: case report. J Surg Case Rep 2021; 2021:rjab375. [PMID: 34457239 PMCID: PMC8390391 DOI: 10.1093/jscr/rjab375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 08/04/2021] [Indexed: 11/13/2022] Open
Abstract
The use of cryopreserved allogenic vascular graft in reconstructive microsurgery has rarely been reported. Here, we report a case of lower extremity reconstruction using cryopreserved hepatic artery as the vein conduit. Postoperative flap perfusion was uneventful with satisfactory wound healing, and graft patency was observed on follow-up color Doppler. Thus, cryopreserved allogenic vascular graft could be a source of vascular conduit in microsurgery.
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Affiliation(s)
- Chih-Hsun Lin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Kai Hsia
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan
| | - Jen-Her Lu
- Section of pediatric cardiology, department of pediatrics, Taipei medical university hospital, Taipei11031, Taiwan
| | - Hsu Ma
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan
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10
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Kurokawa S, Hashimoto Y, Funamoto S, Murata K, Yamashita A, Yamazaki K, Ikeda T, Minatoya K, Kishida A, Masumoto H. In vivo recellularization of xenogeneic vascular grafts decellularized with high hydrostatic pressure method in a porcine carotid arterial interpose model. PLoS One 2021; 16:e0254160. [PMID: 34292963 PMCID: PMC8297896 DOI: 10.1371/journal.pone.0254160] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Autologous vascular grafts are widely used in revascularization surgeries for small caliber targets. However, the availability of autologous conduits might be limited due to prior surgeries or the quality of vessels. Xenogeneic decellularized vascular grafts from animals can potentially be a substitute of autologous vascular grafts. Decellularization with high hydrostatic pressure (HHP) is reported to highly preserve extracellular matrix (ECM), creating feasible conditions for recellularization and vascular remodeling after implantation. In the present study, we conducted xenogeneic implantation of HHP-decellularized bovine vascular grafts from dorsalis pedis arteries to porcine carotid arteries and posteriorly evaluated graft patency, ECM preservation and recellularization. Avoiding damage of the luminal surface of the grafts from drying significantly during the surgical procedure increased the graft patency at 4 weeks after implantation (P = 0.0079). After the technical improvement, all grafts (N = 5) were patent with mild stenosis due to intimal hyperplasia at 4 weeks after implantation. Neither aneurysmal change nor massive thrombosis was observed, even without administration of anticoagulants nor anti-platelet agents. Elastica van Gieson and Sirius-red stainings revealed fair preservation of ECM proteins including elastin and collagen after implantation. The luminal surface of the grafts were thoroughly covered with von Willebrand factor-positive endothelium. Scanning electron microscopy of the luminal surface of implanted grafts exhibited a cobblestone-like endothelial cell layer which is similar to native vascular endothelium. Recellularization of the tunica media with alpha-smooth muscle actin-positive smooth muscle cells was partly observed. Thus, we confirmed that HHP-decellularized grafts are feasible for xenogeneic implantation accompanied by recellularization by recipient cells.
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Affiliation(s)
- Shunji Kurokawa
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yoshihide Hashimoto
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Seiichi Funamoto
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Biomedical Engineering, Osaka Institute of Technology, Osaka, Japan
| | - Kozue Murata
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan
| | - Akitatsu Yamashita
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kazuhiro Yamazaki
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tadashi Ikeda
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kenji Minatoya
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Akio Kishida
- Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
| | - Hidetoshi Masumoto
- Department of Cardiovascular Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
- * E-mail:
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Georges G, Allard B, Dakkak M, Nourissat G, Febrer G. Appraising 5 years in activity of the largest public Canadian vascular graft bank. J Vasc Surg 2021; 74:972-978. [PMID: 33684476 DOI: 10.1016/j.jvs.2021.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 02/08/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND In Canada, tissue distribution is managed by provincial entities. In 2014, Hema-Quebec established a cryopreserved vascular tissue bank accessible to all Canadian hospitals. The objectives of this report were to review the first 5 years of activity of Hema-Quebec's vascular bank and to briefly assess the competitiveness of its products. METHODS Deceased donors, ages 15 to 60, were screened for common blood-borne diseases. Grafts were treated in a triple-antibiotic solution at 35°C before preservation at -100°C. Hema-Quebec's vascular graft records were analyzed from 2014 to 2019 inclusively. RESULTS The average donor age was 35 years old and 78% of donors were men. Overall, 63% of harvested grafts cleared the quality management system. Positive microbial cultures and morphologic defects were the major reasons for graft discard. As such, a total of 60 grafts were delivered between 2016 and 2019 to 8 hospital centers. Moreover, the bank achieved a mean activity increase of 55% per year and Hema-Quebec's homografts were 48% less costly compared with similar homographs from for-profit organizations. CONCLUSIONS Our findings demonstrate that Hema-Quebec has established a viable cryopreserved vascular tissue bank with steady increase in activity and an acceptable graft discard rates and pricing. Based on our findings, we recommend that efforts should be directed to expand the tissue bank graft distribution outside the province of Quebec.
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Affiliation(s)
- Gabriel Georges
- Laval University, Cardiac Surgery Department, Institut Universitaire de Cardiologie et de Pneumologie de Québec (IUCPQ), Quebec City, Canada.
| | | | - Mazen Dakkak
- Héma-Québec, Côte-Vertu Ouest, Saint-Laurent, Canada
| | - Ghislain Nourissat
- Laval University, Vascular Surgery Department, Saint-François d'Assise Hospital, Quebec City, Canada
| | - Guillaume Febrer
- Hôpital du Sacré-Coeur de Montréal, Vascular Surgery Department, Montreal, Canada
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12
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Transplantation of cryopreserved human heart valves in Europe: 30 years of banking in Brussels and future perspectives. Cell Tissue Bank 2021; 22:519-537. [PMID: 33532987 PMCID: PMC7853167 DOI: 10.1007/s10561-021-09902-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/20/2021] [Indexed: 11/27/2022]
Abstract
For over 30 years, our TE has processed, controlled for quality and distributed cryopreserved allograft valves for human application. We present a review of this activity and future perspectives of cardiovascular tissue banking. The donor age and medical/behavioral history are in compliance with the regulations of the EUMS. Allograft morphology and function are evaluated in a class A cleanroom. Tests for viral/bacterial infection, histological control of structure/infection/malignancy and control-rate cryopreservation are performed. A total of 7562 hearts were sent to our TE, whereas 7290 valves (pulmonary, aortic and mitral) were transplanted. The donations increased over time: 1934, 2566 and 3062 hearts were donated during the first, second and third decades (increases of 32.7 and 19.3% during the second and third decades). Likewise, there was a significant increase in transplantations with 2050, 2550 and 2690 valves implanted during the first, second and third decades (24.4 and 5.5% increase during the second and third decades). A total of 4475 pulmonary (61.4%), 2760 aortic (37.9%) and 55 mitral valves (0.7%) were transplanted. Outstanding long-term results in adults and evidence of immune-related deterioration of allografts in neonates and infants were demonstrated. Decellularization was suggested as a solution. One hundred pulmonary and 180 aortic valves were sent for transplantation after decellularization for the ESPOIR and ARISE clinical trials and beyond. The donation and transplantation activity increased progressively. Although cryopreserved valves represent the best substitute for diseased valves, accelerated failure appears after implantation in neonates and infants. The implementation of new technologies, such as decellularization, as a standard procedure for treatment of allograft valves will offer further improvements in allograft quality and increase of durability.
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13
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Situación actual de los bancos de tejidos en Colombia: tejido cardiovascular. REVISTA COLOMBIANA DE CARDIOLOGÍA 2020. [DOI: 10.1016/j.rccar.2018.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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14
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Masmejan S, Deslarzes-Dubuis C, Petitprez S, Longchamp A, Haller C, Saucy F, Corpataux JM, Déglise S. Ten Year Experience of Using Cryopreserved Arterial Allografts for Distal Bypass in Critical Limb Ischaemia. Eur J Vasc Endovasc Surg 2019; 57:823-831. [PMID: 31130420 DOI: 10.1016/j.ejvs.2018.11.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 11/27/2018] [Indexed: 01/19/2023]
Abstract
OBJECTIVE/BACKGROUND In critical limb ischaemia (CLI), current guidelines recommend revascularisation whenever possible, preferentially through endovascular means. However, in the case of long occlusions or failed endovascular attempts, distal bypasses still have a place. Single segment great saphenous vein (GSV), which provides the best conduit, is often not available and currently there is no consensus about the best alternative graft. METHODS From January 2006 to December 2015, 42 cryopreserved arterial allografts were used for a distal bypass. Autologous GSVs or alternative autologous conduits were unavailable for all patients. The patients were observed for survival, limb salvage, and allograft patency. The results were analysed with Kaplan-Meier graphs. RESULTS Estimates of secondary patency at one, two and five years were 81%, 73%, and 57%, respectively. Estimates of primary patency rates at one, two and five years were 60%, 56%, and 26%, respectively. Estimates of limb salvage rates at one, two and five years were 89%, 89%, and 82%, respectively. Estimates of survival rates at one, two and five years were 92%, 76% and 34%, respectively. At 30 days, major amputations and major adverse cardiac events were one and zero, respectively. Six major amputations occurred during the long-term follow up. CONCLUSION Despite a low primary patency rate at two years, the secondary patency of arterial allografts is acceptable for distal bypasses. This suggests that cryopreserved arterial allografts are a suitable alternative for limb saving distal bypasses in the absence of venous conduits, improving limb salvage rates and, possibly, quality of life.
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Affiliation(s)
| | | | | | | | - Claude Haller
- Department of General Surgery, Vascular Surgery Unit, Hôpital de Sion, Sion, Switzerland
| | - François Saucy
- Department of Vascular Surgery, CHUV, Lausanne, Switzerland
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15
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Obturator Bypass with Bovine Carotid Artery Graft: A Novel Twist to a Traditional Technique. Case Rep Surg 2019; 2019:2653058. [PMID: 30915253 PMCID: PMC6399526 DOI: 10.1155/2019/2653058] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 02/04/2019] [Indexed: 11/18/2022] Open
Abstract
When managing an infected groin, though rarely performed, a transobturator bypass remains an important alternative in the armament of a vascular surgeon. Autologous vein and synthetic PTFE are known conduit options for obturator bypasses, although the advantage of utilizing an autologous biological conduit when dealing with infection may not be an option for every patient. On literature review, bovine carotid grafts have been used in infrainguinal revascularizations with comparable results to autologous vein; however, no cases can be found for its use in obturator bypass thus far.
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16
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Pless-Petig G, Knoop S, Rauen U. Serum- and albumin-free cryopreservation of endothelial monolayers with a new solution. Organogenesis 2018; 14:107-121. [PMID: 30081735 PMCID: PMC6150062 DOI: 10.1080/15476278.2018.1501136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Cryopreservation is the only long-term storage option for the storage of vessels and vascular constructs. However, endothelial barrier function is almost completely lost after cryopreservation in most established cryopreservation solutions. We here aimed to improve endothelial function after cryopreservation using the 2D-model of porcine aortic endothelial cell monolayers. The monolayers were cryopreserved in cell culture medium or cold storage solutions based on the 4°C vascular preservation solution TiProtec®, all supplemented with 10% DMSO, using different temperature gradients. After short-term storage at −80°C, monolayers were rapidly thawed and re-cultured in cell culture medium. Thawing after cryopreservation in cell culture medium caused both immediate and delayed cell death, resulting in 11 ± 5% living cells after 24 h of re-culture. After cryopreservation in TiProtec and chloride-poor modifications thereof, the proportion of adherent viable cells was markedly increased compared to cryopreservation in cell culture medium (TiProtec: 38 ± 11%, modified TiProtec solutions ≥ 50%). Using these solutions, cells cryopreserved in a sub-confluent state were able to proliferate during re-culture. Mitochondrial fragmentation was observed in all solutions, but was partially reversible after cryopreservation in TiProtec and almost completely reversible in modified solutions within 3 h of re-culture. The superior protection of TiProtec and its modifications was apparent at all temperature gradients; however, best results were achieved with a cooling rate of −1°C/min. In conclusion, the use of TiProtec or modifications thereof as base solution for cryopreservation greatly improved cryopreservation results for endothelial monolayers in terms of survival and of monolayer and mitochondrial integrity.
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Affiliation(s)
- Gesine Pless-Petig
- a Institut für Physiologische Chemie , Universitätsklinikum Essen , Essen , Germany
| | - Sven Knoop
- a Institut für Physiologische Chemie , Universitätsklinikum Essen , Essen , Germany
| | - Ursula Rauen
- a Institut für Physiologische Chemie , Universitätsklinikum Essen , Essen , Germany
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17
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Špaček M, Měřička P, Janoušek L, Štádler P, Adamec M, Vlachovský R, Guňka I, Navrátil P, Thieme F, Mitáš P, Špunda R, Špatenka J, Staffa R, Němec P, Lindner J. Organization model for allotransplantations of cryopreserved vascular grafts in Czech Republic. Cell Tissue Bank 2018; 19:437-445. [PMID: 29502254 DOI: 10.1007/s10561-018-9691-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 03/01/2018] [Indexed: 11/30/2022]
Abstract
The transplantation of fresh or cryopreserved vascular allografts in patients with a prosthetic graft infection or critical limb ischemia is necessary for their limb salvage and, in many cases, represents a lifesaving procedure. While transplantation of fresh allografts has a long history in the Czech Republic, the standard use of cryopreserved vascular allografts was introduced into the clinical practice in 2011 as a result of the implementation of EU Directive 2004/23/EC into national legislation (Human Cell and Tissue Act No. 296/2008 Coll.). The authors present an organizational model based on cooperation between the majority of Czech Transplant Centers with a tissue establishment licensed by the national competent authority. In various points, we are addressing individual aspects of experimental and clinical studies which affect clinical practice. Based on experimental and clinical work, the first validation of cryopreserved arterial and venous grafts for clinical use was performed between 2011 and 2013. The growing number of centers participating in this programme led to a growing number of patients who underwent transplantation of vascular allografts. In 2015 the numbers of transplanted fresh versus cryopreserved allografts in the Czech Republic were almost equal. Cooperation of the participating centers in the Czech Republic with the licensed Tissue Establishment made it possible to achieve a full compliance with the European Union Directives, and harmonized national legal norms and assured a high quality of cryopreserved vascular allografts.
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Affiliation(s)
- Miroslav Špaček
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic.
| | - Pavel Měřička
- Tissue Bank, University Hospital Hradec Králové, Hradec Králové, Czech Republic
| | - Libor Janoušek
- Department of Transplant Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petr Štádler
- Department of Vascular Surgery, Na Homolce Hospital, Prague, Czech Republic
| | - Miloš Adamec
- Transplants Coordinating Centre, Prague, Czech Republic
| | - Robert Vlachovský
- 2nd Department of Surgery, St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Igor Guňka
- Department of Surgery, University Hospital and Faculty of Medicine Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic.,Transplant Center, University Hospital and Faculty of Medicine Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - Pavel Navrátil
- Transplant Center, University Hospital and Faculty of Medicine Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic
| | - Filip Thieme
- Department of Transplant Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Petr Mitáš
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Rudolf Špunda
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Jaroslav Špatenka
- Department of Transplantation and Tissue Bank, University Hospital Motol, Prague, Czech Republic
| | - Robert Staffa
- 2nd Department of Surgery, St. Anne's University Hospital, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Petr Němec
- Center of Cardiovascular Surgery and Transplantations Brno, Brno, Czech Republic
| | - Jaroslav Lindner
- 2nd Department of Surgery - Department of Cardiovascular Surgery, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
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18
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Cryopreserved human aortic root allografts arterial wall: Structural changes occurring during thawing. PLoS One 2017; 12:e0175007. [PMID: 28414740 PMCID: PMC5393551 DOI: 10.1371/journal.pone.0175007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Accepted: 03/20/2017] [Indexed: 11/19/2022] Open
Abstract
Background The aim of our experimental work was to assess morphological changes of arterial wall that arise during different thawing protocols of a cryopreserved human aortic root allograft (CHARA) arterial wall. Methods The experiment was performed on CHARAs. Two thawing protocols were tested: 1, CHARAs were thawed at a room temperature at +23°C; 2, CHARAs were placed directly into a water bath at +37°C. Microscopic samples preparation After fixation, all samples were washed in distilled water for 5 min, and dehydrated in a graded ethanol series (70, 85, 95, and 100%) for 5 min at each level. The tissue samples were then immersed in 100% hexamethyldisilazane for 10 minutes and air dried in an exhaust hood at room temperature. Processed samples were mounted on stainless steel stubs, coated with gold. Results Thawing protocol 1: All 6 (100%) samples showed loss of the endothelium and damage to the subendothelial layers with randomly dispersed circular defects and micro-fractures without smooth muscle cells contractions in the tunica media. Thawing protocol 2: All 6 (100%) samples showed loss of endothelium from the luminal surface, longitudinal corrugations in the direction of blood flow caused by smooth muscle cells contractions in the tunica media with frequent fractures in the subendothelial layer Conclusion All the samples thawed at the room temperature showed smaller structural damage to the CHARA arterial wall with no smooth muscle cell contraction in tunica media when compared to the samples thawed in a water bath.
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19
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Díaz-Moreno E, Durand-Herrera D, Carriel V, Martín-Piedra MÁ, Sánchez-Quevedo MDC, Garzón I, Campos A, Fernández-Valadés R, Alaminos M. Evaluation of freeze-drying and cryopreservation protocols for long-term storage of biomaterials based on decellularized intestine. J Biomed Mater Res B Appl Biomater 2017; 106:488-500. [DOI: 10.1002/jbm.b.33861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 12/05/2016] [Accepted: 01/26/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Eloísa Díaz-Moreno
- Division of Pediatric Surgery; University of Granada Hospital Complex; Granada Spain
- PhD Programme in Clinical Medicine and Public Health; University of Granada; Spain
| | | | - Víctor Carriel
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - Miguel-Ángel Martín-Piedra
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - María-del-Carmen Sánchez-Quevedo
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - Ingrid Garzón
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - Antonio Campos
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - Ricardo Fernández-Valadés
- Division of Pediatric Surgery; University of Granada Hospital Complex; Granada Spain
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
| | - Miguel Alaminos
- Department of Histology (Tissue Engineering Group); University of Granada; Spain
- Biosanitary Research Institute of Granada (ibs.GRANADA); Spain
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20
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Heo SH, Kim YW, Woo SY, Park YJ, Kim DK, Chung DR. Recent Results of In Situ Abdominal Aortic Reconstruction with Cryopreserved Arterial Allograft. Eur J Vasc Endovasc Surg 2017; 53:158-167. [DOI: 10.1016/j.ejvs.2016.07.090] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Accepted: 07/26/2016] [Indexed: 11/29/2022]
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21
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Díaz Rodríguez R, Van Hoeck B, De Gelas S, Blancke F, Ngakam R, Bogaerts K, Jashari R. Determination of residual dimethylsulfoxide in cryopreserved cardiovascular allografts. Cell Tissue Bank 2017; 18:263-270. [DOI: 10.1007/s10561-016-9607-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 12/15/2016] [Indexed: 10/20/2022]
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22
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Repair of access-related brachial artery aneurysm with cadaveric homograft: mid-term follow-up. J Vasc Access 2016; 17:e156-e157. [PMID: 27516140 DOI: 10.5301/jva.5000597] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2016] [Indexed: 11/20/2022] Open
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23
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Sotres-Vega A, Villalba-Caloca J, Azrad-Daniel S, García-Montes JA, Torre-Jaime JL, Guadarrama-Sánchez I, Pérez-Covarrubias D, Santibañez-Salgado JA. Surgical Skills Training with Cryopreserved Rat Stomachs. JOURNAL OF VETERINARY MEDICAL EDUCATION 2016; 43:420-426. [PMID: 27404548 DOI: 10.3138/jvme.0515-074r3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The objective of this study is to present a high-fidelity bench model of cryopreserved stomachs that can be used while learning surgical skills. Thirty stomachs were harvested from Wistar rats at the end of non-abdominal research studies. The stomachs were washed with cold saline solution and filled with hyaluronic acid solution. The organs were then placed into cryovials and cryopreserved at -30 °C for 60 days. The stomachs were thawed to room temperature on the day of the surgical skills practice and two full-thickness incisions were made. Reporting on their experiences, 22 participants (73.33%) felt that the cryopreserved stomach was identical to in vivo rat stomachs, 24 (80.00%) reported that the stomach was easy to handle, and 27 (90%) reported the tissue was non-friable. Moreover, 29 participants (96.6%) finished the suturing without tears and 100% recommended it as a biomaterial for surgical training. The cryopreserved stomach is a practical, reproducible, low-cost, and high-fidelity bench model that allows surgical fellows to learn how to handle a stomach and improve their surgical abilities before performing surgery on patients or laboratory animals.
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Kilbride P, Gonzalez-Molina J, Maurmann N, Mendonça da Silva J, Gibbons S, Selden C, Fuller B, Morris J. Impact of Storage at -80°C on Encapsulated Liver Spheroids After Liquid Nitrogen Storage. Biores Open Access 2016; 5:146-54. [PMID: 27298755 PMCID: PMC4900228 DOI: 10.1089/biores.2016.0017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
For many bioengineered tissues to have practical clinical application, cryopreservation for use on demand is essential. This study examined different thermal histories on warming and short holding periods at different subzero temperatures on subsequent functional recoveries of alginate encapsulated liver spheroids (ELS) for use in a bioartificial liver device. This mimicked transport at liquid nitrogen (−196°C) or dry ice (∼−80°C) temperatures. Holding at −80°C on warming after −196°C storage resulted in ELS expressing significant (p < 0.001) damage compared with direct thaw from liquid nitrogen, with viable cell number falling from 74.0 ± 8.4 million viable cells/mL without −80°C storage to 1.9 ± 0.6 million viable cells/mL 72 h post-thaw after 8 days storage at −80°C. Even 1 day at −80°C after −196°C storage resulted in lower viability (down 21% 24 h post-thaw), viable cell count (down 29% 24 h post-thaw), glucose, and alpha-1-fetoprotein production (reduced by 59% and 95% 24 h from 1 day post-thaw, respectively). Storage at −80°C was determined to be harmful only during the warming cycle. Chemical measurements of the alginate component of ELS were unchanged by cryogenic exposure in either condition.
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Affiliation(s)
- Peter Kilbride
- Asymptote Ltd., St. John's Innovation Centre, Cambridge, United Kingdom.; UCL Institute for Liver and Digestive Health, Royal Free Hospital Campus, London, United Kingdom
| | - Jordi Gonzalez-Molina
- UCL Institute for Liver and Digestive Health , Royal Free Hospital Campus, London, United Kingdom
| | - Natasha Maurmann
- UCL Institute for Liver and Digestive Health, Royal Free Hospital Campus, London, United Kingdom.; UCL Department of Surgery, Royal Free Hospital Campus, London, United Kingdom
| | - Joana Mendonça da Silva
- UCL Institute for Liver and Digestive Health , Royal Free Hospital Campus, London, United Kingdom
| | - Stephanie Gibbons
- UCL Institute for Liver and Digestive Health , Royal Free Hospital Campus, London, United Kingdom
| | - Clare Selden
- UCL Institute for Liver and Digestive Health , Royal Free Hospital Campus, London, United Kingdom
| | - Barry Fuller
- UCL Department of Surgery , Royal Free Hospital Campus, London, United Kingdom
| | - John Morris
- Asymptote Ltd. , St. John's Innovation Centre, Cambridge, United Kingdom
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25
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Kilbride P, Lamb S, Milne S, Gibbons S, Erro E, Bundy J, Selden C, Fuller B, Morris J. Spatial considerations during cryopreservation of a large volume sample. Cryobiology 2016; 73:47-54. [PMID: 27256662 PMCID: PMC4962858 DOI: 10.1016/j.cryobiol.2016.05.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 05/26/2016] [Accepted: 05/29/2016] [Indexed: 12/22/2022]
Abstract
There have been relatively few studies on the implications of the physical conditions experienced by cells during large volume (litres) cryopreservation - most studies have focused on the problem of cryopreservation of smaller volumes, typically up to 2 ml. This study explores the effects of ice growth by progressive solidification, generally seen during larger scale cryopreservation, on encapsulated liver hepatocyte spheroids, and it develops a method to reliably sample different regions across the frozen cores of samples experiencing progressive solidification. These issues are examined in the context of a Bioartificial Liver Device which requires cryopreservation of a 2 L volume in a strict cylindrical geometry for optimal clinical delivery. Progressive solidification cannot be avoided in this arrangement. In such a system optimal cryoprotectant concentrations and cooling rates are known. However, applying these parameters to a large volume is challenging due to the thermal mass and subsequent thermal lag. The specific impact of this to the cryopreservation outcome is required. Under conditions of progressive solidification, the spatial location of Encapsulated Liver Spheroids had a strong impact on post-thaw recovery. Cells in areas first and last to solidify demonstrated significantly impaired post-thaw function, whereas areas solidifying through the majority of the process exhibited higher post-thaw outcome. It was also found that samples where the ice thawed more rapidly had greater post-thaw viability 24 h post-thaw (75.7 ± 3.9% and 62.0 ± 7.2% respectively). These findings have implications for the cryopreservation of large volumes with a rigid shape and for the cryopreservation of a Bioartificial Liver Device.
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Affiliation(s)
- Peter Kilbride
- Institute for Liver and Digestive Health, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK; Asymptote Ltd. St. John's Innovation Centre, Cowley Road, Cambridge, CB4 0WS, UK.
| | - Stephen Lamb
- Asymptote Ltd. St. John's Innovation Centre, Cowley Road, Cambridge, CB4 0WS, UK
| | - Stuart Milne
- Asymptote Ltd. St. John's Innovation Centre, Cowley Road, Cambridge, CB4 0WS, UK
| | - Stephanie Gibbons
- Institute for Liver and Digestive Health, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK
| | - Eloy Erro
- Institute for Liver and Digestive Health, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK
| | - James Bundy
- Institute for Liver and Digestive Health, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK
| | - Clare Selden
- Institute for Liver and Digestive Health, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK
| | - Barry Fuller
- Department of Surgery, Royal Free Hospital Campus, UCL, London, NW3 2PF, UK
| | - John Morris
- Asymptote Ltd. St. John's Innovation Centre, Cowley Road, Cambridge, CB4 0WS, UK
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Long-Term Results of Biological Grafts for Haemodialysis Vascular Access. J Vasc Access 2015; 16 Suppl 9:S82-6. [DOI: 10.5301/jva.5000355] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/15/2014] [Indexed: 11/20/2022] Open
Abstract
The quest for suitable conduits for dialysis access has continued since the first patients were dialysed. Whilst synthetic grafts made from expanded polytetrafluoroethylene (ePTFE) have been the main definitive option after autologous arteriovenous fistulas they have a number of drawbacks, which has led to the use and development of biological grafts such as autografts, homografts or xenografts. Technology continues to improve and currently biosynthetic options are available which may combine the benefits of a readily available product without the drawbacks of PTFE. The history and evidence of biological options for haemodialysis access are discussed.
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Wayne S, Milne C, Cox G. Fresh arterial homograft for bypass in critical limb ischaemia with infection. BMJ Case Rep 2015; 2015:bcr-2015-210218. [PMID: 25994436 DOI: 10.1136/bcr-2015-210218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
We present what we believe is Australia's first fresh peripheral arterial transplant for revascularisation of an ischaemic limb. Although cryopreserved homografts are accepted as a management option for revascularisation of critical limb ischaemia in infected fields, cryopreserved peripheral vascular tissue is not currently available in Australia. We describe a 72-year-old man without autologous conduit in whom infected prosthetic grafts were explanted, causing critical limb ischaemia of a below knee stump. Fresh peripheral arterial tissue was procured via the Australian organ donation authority, DonateLife, and was used to revascularise the stump with an axillofemoral bypass. This permitted successful healing of the stump within 6 weeks and mobilisation with a prosthesis. This case illustrates that fresh arterial homografts are a viable bridging solution for revascularisation of limb ischaemia with infection. However, it also highlights the need to establish a peripheral homograft bank so that cryopreserved conduits are readily available for similar scenarios.
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Ali MA, Yong CC, Eng HL, Wang CC, Lin TL, Li WF, Wang SH, Lin CC, Yap A, Chen CL. Cryopreserved arterial grafts as a conduit in outflow reconstruction in living donor liver transplantation. JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES 2015; 22:498-504. [PMID: 25783415 DOI: 10.1002/jhbp.240] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 02/17/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND Few reports have addressed the use of cryopreserved arterial grafts (CAG) for anterior section drainage in right lobe living donor liver transplantation (RL LDLT), and the impact of atherosclerosis on patency rate (PR) is not well studied. Also, those reports have limited case numbers. The aim of the present study is to report the largest experience with CAG in outflow reconstruction in RL LDLT and the impact of atherosclerosis on its patency. METHODS During 2010 and 2011, 62 of 243 patients who underwent LDLT received outflow reconstruction with CAG for RL grafts. Atherosclerosis in CAG was classified into early, intermediate and advanced lesions according to the classification adopted by the American Heart Association: group 1 with grafts having no atherosclerosis or early lesions; and group 2 with grafts having intermediate and advanced lesions. Patency rates of CAG correlated with atherosclerotic change of CAG were retrospectively analyzed. RESULTS The study group comprised 65 CAGs with 1, 3 and 6 months PR of 86.2%, 84.6% and 75.2% respectively. Histopathological examination was successful in 53 CAGs. The 1, 3 and 6 months PR of group with no/early atherosclerosis were 86%, 83.7% and 76.7%, respectively, while for groups with intermediate/advanced lesions they were 90%. However, there was no significant difference between the two groups (P = 0.384). CONCLUSIONS Cryopreserved arterial grafts can be used for outflow reconstruction in RL LDLT with a good patency rate. Atherosclerosis appears to have minimal effect on CAG patency, yet further studies with larger cohorts are needed to support our results.
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Affiliation(s)
- Mahmoud Abdelwahab Ali
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Chee-Chien Yong
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Hock-Liew Eng
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chih-Chi Wang
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan. .,Department of Surgery, Chang Gung Memorial Hospital Chiayi, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
| | - Ting-Lung Lin
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Wei-Feng Li
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Shih-Ho Wang
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Chih-Che Lin
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Anthony Yap
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
| | - Chao-Long Chen
- Liver Transplant Program and Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, 123 Ta-Pei Road, Niao-Song, Kaohsiung 833, Taiwan
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Flameng W, Daenen W, Jashari R, Herijgers P, Meuris B. Durability of homografts used to treat complex aortic valve endocarditis. Ann Thorac Surg 2015; 99:1234-8. [PMID: 25661581 DOI: 10.1016/j.athoracsur.2014.11.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/21/2014] [Accepted: 11/03/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND Acute bacterial endocarditis may be extremely destructive for cardiac valves and their periannular structures. It has been suggested that complex reconstruction procedures require the use of homografts because of their versatility and potency to resist repeated infection. METHODS We studied the long-term results of 69 patients with complex endocarditis who received homografts in the aortic position. RESULTS The results after a mean follow-up of 8.1 ± 5.1 years (median, 8.0 years) showed that the recurrence of endocarditis even in these complex cases is low (7%), but the incidence of structural valve degeneration (SVD) is high. Freedom from SVD at 10 years is only 60.0%. When aortic homografts degenerate, they predominantly calcify. CONCLUSIONS The use of homografts to reconstruct endocarditis-related aortic valve destruction is associated with a low recurrence of endocarditis but a high incidence of SVD in the long run.
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Affiliation(s)
- Willem Flameng
- Department of Cardiac Surgery, KU Leuven, University Hospitals Leuven, Leuven, Belgium
| | - Willem Daenen
- Department of Cardiac Surgery, KU Leuven, University Hospitals Leuven, Leuven, Belgium
| | | | - Paul Herijgers
- Department of Cardiac Surgery, KU Leuven, University Hospitals Leuven, Leuven, Belgium
| | - Bart Meuris
- Department of Cardiac Surgery, KU Leuven, University Hospitals Leuven, Leuven, Belgium.
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Buzzi M, Guarino A, Gatto C, Manara S, Dainese L, Polvani G, Tóthová JD. Residual antibiotics in decontaminated human cardiovascular tissues intended for transplantation and risk of falsely negative microbiological analyses. PLoS One 2014; 9:e112679. [PMID: 25397402 PMCID: PMC4232473 DOI: 10.1371/journal.pone.0112679] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 10/10/2014] [Indexed: 11/19/2022] Open
Abstract
We investigated the presence of antibiotics in cryopreserved cardiovascular tissues and cryopreservation media, after tissue decontamination with antibiotic cocktails, and the impact of antibiotic residues on standard tissue bank microbiological analyses. Sixteen cardiovascular tissues were decontaminated with bank-prepared cocktails and cryopreserved by two different tissue banks according to their standard operating procedures. Before and after decontamination, samples underwent microbiological analysis by standard tissue bank methods. Cryopreserved samples were tested again with and without the removal of antibiotic residues using a RESEP tube, after thawing. Presence of antibiotics in tissue homogenates and processing liquids was determined by a modified agar diffusion test. All cryopreserved tissue homogenates and cryopreservation media induced important inhibition zones on both Staphylococcus aureus- and Pseudomonas aeruginosa-seeded plates, immediately after thawing and at the end of the sterility test. The RESEP tube treatment markedly reduced or totally eliminated the antimicrobial activity of tested tissues and media. Based on standard tissue bank analysis, 50% of tissues were found positive for bacteria and/or fungi, before decontamination and 2 out of 16 tested samples (13%) still contained microorganisms after decontamination. After thawing, none of the 16 cryopreserved samples resulted positive with direct inoculum method. When the same samples were tested after removal of antibiotic residues, 8 out of 16 (50%) were contaminated. Antibiotic residues present in tissue allografts and processing liquids after decontamination may mask microbial contamination during microbiological analysis performed with standard tissue bank methods, thus resulting in false negatives.
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Affiliation(s)
- Marina Buzzi
- Cardiovascular Tissue Bank of Emilia-Romagna, Azienda Ospedaliero-Universitaria Policlinico S. Orsola-Malpighi, Bologna, Italy
| | - Anna Guarino
- Cardiovascular Tissue Bank of Lombardia, Centro Cardiologico Monzino, Milan, Italy
| | - Claudio Gatto
- Research and Development department, AL.CHI.MI.A. S.r.l., Ponte San Nicolò, Italy
| | - Sabrina Manara
- Cardiovascular Tissue Bank of Emilia-Romagna, Azienda Ospedaliero-Universitaria Policlinico S. Orsola-Malpighi, Bologna, Italy
| | - Luca Dainese
- Cardiovascular Tissue Bank of Lombardia, Centro Cardiologico Monzino, Milan, Italy
| | - Gianluca Polvani
- Cardiovascular Tissue Bank of Lombardia, Centro Cardiologico Monzino, Milan, Italy
| | - Jana D'Amato Tóthová
- Research and Development department, AL.CHI.MI.A. S.r.l., Ponte San Nicolò, Italy
- * E-mail:
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Heng WL, Madhavan K, Wee P, Seck T, Lim YP, Lim CH. Banking of cryopreserved iliac artery and vein homografts: clinical uses in transplantation. Cell Tissue Bank 2014; 16:235-42. [PMID: 25151404 PMCID: PMC4426133 DOI: 10.1007/s10561-014-9469-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/16/2014] [Indexed: 11/27/2022]
Abstract
Iliac artery and vein homografts are critical for revascularization in living-donor liver transplantation. Since 2010, National Cardiovascular Homograft Bank and National University Hospital have collaborated in the pioneer endeavor of banking iliac vessel homografts for such surgeries in Singapore. This article aims to demonstrate that the processing, decontamination and cryopreservation techniques that our bank follow, help preserve iliac vessel homografts for a longer duration as compared to homografts preserved using short-term preservation techniques. This paper reports the first 4 years of post-operative outcome for recipients as a preliminary report for a longer-term outcome study. Criteria for donor assessment, techniques of iliac vessel homograft recovery, processing, decontamination, cryopreservation and storage according to the American Association of Tissue Banks standards are also described. From 2010 until 2013, we discovered of the iliac vessel homografts processed, 17 (94.4 %) were suitable for clinical use. Nine iliac artery grafts (64 %) and one iliac vein graft (14 %) were implanted. Irrespective of vessel type, homografts <90 mm in length were of little use. Of the nine current iliac vessel homograft recipients, eight patients (89 %) had living-donor liver transplantation and one patient (11 %) had reconstruction of the right internal carotid artery after resection of an aneurysm. Our preliminary results supports existing literatures that suggest cryopreserved iliac vessel homografts can be successfully used for revascularization in liver transplantation and reconstruction of carotid artery. Encouraging short-term post-operative patient outcomes have been achieved, with no report of adverse event attributed to implanted homografts. We believe that our processing, decontamination and cryopreservation techniques have helped preserve the homografts for longer duration as compared to homografts preserved using short-term preservation techniques.
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Affiliation(s)
- Wee Ling Heng
- National Cardiovascular Homograft Bank, National Heart Centre Singapore, Singapore, Singapore,
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Kwon SK, Song JJ, Cho CG, Park SW, Kim JR, Oh SH, Lee JH. Tracheal reconstruction with asymmetrically porous polycaprolactone/pluronic F127 membranes. Head Neck 2013; 36:643-51. [DOI: 10.1002/hed.23343] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 01/25/2013] [Accepted: 04/05/2013] [Indexed: 12/11/2022] Open
Affiliation(s)
- Seong Keun Kwon
- Department of Otorhinolaryngology - Head and Neck Surgery; Seoul National University Hospital; Seoul Republic of Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology - Head and Neck Surgery; Dongguk University Ilsan Hospital; Goyang Republic of Korea
| | - Chang Gun Cho
- Department of Otorhinolaryngology - Head and Neck Surgery; Dongguk University Ilsan Hospital; Goyang Republic of Korea
| | - Seok-Won Park
- Department of Otorhinolaryngology - Head and Neck Surgery; Dongguk University Ilsan Hospital; Goyang Republic of Korea
| | - Jin Rae Kim
- Department of Advanced Materials; Hannam University; Yuseong Gu Daejeon Republic of Korea
| | - Se Heang Oh
- Department of Nanobiomedical Science and WCU Research Center; Dankook University; Cheonan Republic of Korea
| | - Jin Ho Lee
- Department of Advanced Materials; Hannam University; Yuseong Gu Daejeon Republic of Korea
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