1
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Leemkuil M, Messner F, Benjamens S, Krendl FJ, Leuvenink HG, Margreiter C, Pol RA. The impact of donor pancreas extraction time on graft survival and postoperative complications in pancreas transplant recipients. Pancreatology 2021; 21:S1424-3903(21)00152-6. [PMID: 34039529 DOI: 10.1016/j.pan.2021.05.001] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 04/16/2021] [Accepted: 05/04/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND Simultaneous pancreas kidney transplantation (SPK) is the best therapeutic option for patients with diabetes mellitus type 1 and end-stage renal disease. Recently, donor organ extraction time has been shown to affect kidney and liver graft survival. This study aimed to assess the effect of pancreas donor extraction time on graft survival and postoperative complications. METHODS We retrospectively analyzed all pancreas transplants performed in two Eurotransplant centers. The association of pancreas extraction time with pancreas graft survival was analyzed by a Cox proportional hazards regression analysis after 3 months, 1 and 5 year. Besides, the effect of pancreas extraction time on the incidence of severe postoperative complications was analyzed. RESULTS A total of 317 pancreas transplants were included in this study. Death-censored pancreas graft survival was 85.7% after one year and 76.7% after five years. Median pancreas donor extraction time was 64 min [IQR: 52-79 min]. After adjustment for potential confounders, death censored graft survival after 30 days (HR 1.01, 95% CI 0.9-1.03 (p = 0.23), 1 year (HR 1.01, 95% CI 0.99-1.03 (p = 0.22) and 5 years (HR 1.00, 95% CI 0.99-1.02 (p = 0.57) was not associated with pancreas donor extraction time. However, extraction time was significantly associated with a higher incidence of Clavien-Dindo ≥3 complications compared to Clavien-Dindo 1 + 2 complications: OR 1.012, 95% CI 1.00-1.02 (p = 0.039). CONCLUSIONS Our findings suggest that although no effect on graft survival was found, limiting pancreas extraction time can have a significant impact on lowering postoperative complications.
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Affiliation(s)
- Marjolein Leemkuil
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
| | - Franka Messner
- Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Stan Benjamens
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Felix J Krendl
- Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Henri Gd Leuvenink
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Christian Margreiter
- Department of Visceral, Transplant and Thoracic Surgery, Medical University of Innsbruck, Innsbruck, Austria
| | - Robert A Pol
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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2
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Bakker IS, Morks AN, ten Cate Hoedemaker HO, Burgerhof JGM, Leuvenink HG, van Praagh JB, Ploeg RJ, Havenga K, Bakker IS, Morks AN, ten Cate Hoedemaker HO, Leuvenink HG, Ploeg RJ, Havenga K, van Etten B, Lange JFM, Hemmer PHJ, Burgerhof JGM, Sonneveld DJA, Tanis PJ, Wegdam JA, Jonk A, Lutke Holzik MF, Bosker RJI, Lamme B, Spillenaar Bilgen EJ, Bremers AJ, van der Mijle HC, Hoff C, de Vries DP, Logeman F, Sietses C, Lesanka Versluijs-Ossewaarde FN, Leijtens JW, Tobon Morales RE, Neijenhuis PA, Kloppenberg FW, Schasfoort R, Bleeker WA, Hess D, Rosman C, Wit F, Ton van Engelenburg KC, Pronk A, Bonsing BA, Dekker JW, Consten EC, Patijn GA, Bogdan Rajcs S, Csapó Z, Bálint A, Harsányi L, István G, Horisberger K, Bader F, Kutup A, Mariette C, Cebrián F. Randomized clinical trial of biodegradeable intraluminal sheath to prevent anastomotic leak after stapled colorectal anastomosis. Br J Surg 2017; 104:1010-1019. [DOI: 10.1002/bjs.10534] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 06/09/2016] [Accepted: 02/08/2017] [Indexed: 12/11/2022]
Abstract
Abstract
Background
Anastomotic leakage is a potential major complication after colorectal surgery. The C-seal was developed to help reduce the clinical leakage rate. It is an intraluminal sheath that is stapled proximal to a colorectal anastomosis, covering it intraluminally and thus preventing intestinal leakage in case of anastomotic dehiscence. The C-seal trial was initiated to evaluate the efficacy of the C-seal in reducing anastomotic leakage in stapled colorectal anastomoses.
Methods
This RCT was performed in 41 hospitals in the Netherlands, Germany, France, Hungary and Spain. Patients undergoing elective surgery with a stapled colorectal anastomosis less than 15 cm from the anal verge were eligible. Included patients were randomized to the C-seal and control groups, stratified for centre, anastomotic height and intention to create a defunctioning stoma. Primary outcome was anastomotic leakage requiring invasive treatment.
Results
Between December 2011 and December 2013, 402 patients were included in the trial, 202 in the C-seal group and 200 in the control group. Anastomotic leakage was diagnosed in 31 patients (7·7 per cent), with a 10·4 per cent leak rate in the C-seal group and 5·0 per cent in the control group (P = 0·060). Male sex showed a trend towards a higher leak rate (P = 0·055). Construction of a defunctioning stoma led to a lower leakage rate, although this was not significant (P = 0·095).
Conclusion
C-seal application in stapled colorectal anastomoses does not reduce anastomotic leakage. Registration number: NTR3080 (http://www.trialregister.nl/trialreg/index.asp).
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Affiliation(s)
- I S Bakker
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - A N Morks
- Department of Surgery, Groene Hart Ziekenhuis, Gouda, The Netherlands
| | - H O ten Cate Hoedemaker
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - J G M Burgerhof
- Departments of Epidemiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - H G Leuvenink
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - J B van Praagh
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - R J Ploeg
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
- Nuffield Department of Surgical Sciences, University of Oxford, Oxford, UK
| | - K Havenga
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - I S Bakker
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - A N Morks
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - H O ten Cate Hoedemaker
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - H G Leuvenink
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - R J Ploeg
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - K Havenga
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - B van Etten
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - J F M Lange
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - P H J Hemmer
- Departments of Surgery, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | - J G M Burgerhof
- Departments of Epidemiology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
| | | | - P J Tanis
- Academic Medical Centre, Amsterdam, The Netherlands
| | - J A Wegdam
- Elkerliek Ziekenhuis, Helmond, The Netherlands
| | - A Jonk
- Streekziekenhuis Koningin Beatrix, Winterswijk, The Netherlands
| | | | | | - B Lamme
- Albert Schweitzer Hospital, Dordrecht, The Netherlands
| | | | - A J Bremers
- Radboud University, Nijmegen Medical Centre, The Netherlands
| | | | - C Hoff
- Medical Centre, Leeuwarden, The Netherlands
| | - D P de Vries
- Ommelander Ziekenhuis Group, Winschoten, The Netherlands
| | - F Logeman
- Beatrix Hospital, Gorinchem, The Netherlands
| | - C Sietses
- Gelderse Vallei Hospital, Ede, The Netherlands
| | | | | | | | | | | | | | | | - D Hess
- Antonius Hospital, Sneek, The Netherlands
| | - C Rosman
- Canisius Wilhelmina Hospital, Nijmegen, The Netherlands
| | - F Wit
- Tjongerschans Hospital, Heerenveen, The Netherlands
| | | | - A Pronk
- Diakonessenhuis, Utrecht, The Netherlands
| | - B A Bonsing
- Leiden University Medical Centre, The Netherlands
| | - J W Dekker
- Reinier de Graaf Hospital, Delft, The Netherlands
| | - E C Consten
- Meander Medical Centre, Amersfoort, The Netherlands
| | | | - S Bogdan Rajcs
- Szabolcs-Szatmár-Bereg County Hospitals, Jósa András University Teaching Hospital, Nyíregyháza, Hungary
| | - Z Csapó
- Flór Ferenc Hospital of County Pest, Kistarcsa, Hungary
| | - A Bálint
- Szent Imre Hospital, Budapest, Hungary
| | - L Harsányi
- Semmelweis University, First Department of surgery, Budapest, Hungary
| | - G István
- Semmelweis University, Second Department of Surgery, Budapest, Hungary
| | - K Horisberger
- University Medical Centre Mannheim, University of Heidelberg, Germany
| | - F Bader
- Klinikum Rechts der Isar, Technische Universität München, Germany
| | - A Kutup
- University Medical Centre Hamburg–Eppendorf, Germany
| | - C Mariette
- Claude Huriez University Hospital, Lille, France
| | - F Cebrián
- Hospital Universitario Fundación Alcorcón, Madrid, Spain
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3
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Akhtar MZ, Huang H, Kaisar M, Lo Faro ML, Rebolledo R, Morten K, Heather LC, Dona A, Leuvenink HG, Fuggle SV, Kessler BM, Pugh CW, Ploeg RJ. Using an Integrated -Omics Approach to Identify Key Cellular Processes That Are Disturbed in the Kidney After Brain Death. Am J Transplant 2016; 16:1421-40. [PMID: 26602379 DOI: 10.1111/ajt.13626] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 10/26/2015] [Accepted: 11/12/2015] [Indexed: 01/25/2023]
Abstract
In an era where we are becoming more reliant on vulnerable kidneys for transplantation from older donors, there is an urgent need to understand how brain death leads to kidney dysfunction and, hence, how this can be prevented. Using a rodent model of hemorrhagic stroke and next-generation proteomic and metabolomic technologies, we aimed to delineate which key cellular processes are perturbed in the kidney after brain death. Pathway analysis of the proteomic signature of kidneys from brain-dead donors revealed large-scale changes in mitochondrial proteins that were associated with altered mitochondrial activity and morphological evidence of mitochondrial injury. We identified an increase in a number of glycolytic proteins and lactate production, suggesting a shift toward anaerobic metabolism. Higher amounts of succinate were found in the brain death group, in conjunction with increased markers of oxidative stress. We characterized the responsiveness of hypoxia inducible factors and found this correlated with post-brain death mean arterial pressures. Brain death leads to metabolic disturbances in the kidney and alterations in mitochondrial function and reactive oxygen species generation. This metabolic disturbance and alteration in mitochondrial function may lead to further cellular injury. Conditioning the brain-dead organ donor by altering metabolism could be a novel approach to ameliorate this brain death-induced kidney injury.
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Affiliation(s)
- M Z Akhtar
- Centre for Cellular and Molecular Physiology, Oxford University, Oxford, UK.,Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK
| | - H Huang
- Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK.,Target Discovery Institute, Oxford University, Oxford, UK
| | - M Kaisar
- Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK.,Target Discovery Institute, Oxford University, Oxford, UK
| | - M L Lo Faro
- Centre for Cellular and Molecular Physiology, Oxford University, Oxford, UK.,Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK
| | - R Rebolledo
- Surgical Research Laboratory, University of Groningen, Groningen, the Netherlands
| | - K Morten
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Oxford, UK
| | - L C Heather
- Department of Physiology, Anatomy and Genetics, University of Oxford, Oxford, UK
| | - A Dona
- Department of Surgery, Imperial College, London, UK.,Kolling Institute for Medical Research, The University of Sydney, New South Wales, Australia
| | - H G Leuvenink
- Surgical Research Laboratory, University of Groningen, Groningen, the Netherlands
| | - S V Fuggle
- Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK
| | - B M Kessler
- Target Discovery Institute, Oxford University, Oxford, UK
| | - C W Pugh
- Centre for Cellular and Molecular Physiology, Oxford University, Oxford, UK
| | - R J Ploeg
- Oxford Transplant Centre, Nuffield Department of Surgical Sciences, Churchill Hospital, Oxford, UK
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4
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Poppelaars F, Damman J, de Vrij EL, Burgerhof JGM, Saye J, Daha MR, Leuvenink HG, Uknis ME, Seelen MAJ. New insight into the effects of heparinoids on complement inhibition by C1-inhibitor. Clin Exp Immunol 2016; 184:378-88. [PMID: 26874675 DOI: 10.1111/cei.12777] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2016] [Indexed: 01/22/2023] Open
Abstract
Complement activation is of major importance in numerous pathological conditions. Therefore, targeted complement inhibition is a promising therapeutic strategy. C1-esterase inhibitor (C1-INH) controls activation of the classical pathway (CP) and the lectin pathway (LP). However, conflicting data exist on inhibition of the alternative pathway (AP) by C1-INH. The inhibitory capacity of C1-INH for the CP is potentiated by heparin and other glycosaminoglycans, but no data exist for the LP and AP. The current study investigates the effects of C1-INH in the presence or absence of different clinically used heparinoids on the CP, LP and AP. Furthermore, the combined effects of heparinoids and C1-INH on coagulation were investigated. C1-INH, heparinoids or combinations were analysed in a dose-dependent fashion in the presence of pooled serum. Functional complement activities were measured simultaneously using the Wielisa(®) -kit. The activated partial thrombin time was determined using an automated coagulation analyser. The results showed that all three complement pathways were inhibited significantly by C1-INH or heparinoids. Next to their individual effects on complement activation, heparinoids also enhanced the inhibitory capacity of C1-INH significantly on the CP and LP. For the AP, significant potentiation of C1-INH by heparinoids was found; however, this was restricted to certain concentration ranges. At low concentrations the effect on blood coagulation by combining heparinoids with C1-INH was minimal. In conclusion, our study shows significant potentiating effects of heparinoids on the inhibition of all complement pathways by C1-INH. Therefore, their combined use is a promising and a potentially cost-effective treatment option for complement-mediated diseases.
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Affiliation(s)
- F Poppelaars
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groninge, Groningen
| | - J Damman
- Department of Pathology, University of Amsterdam, Academic Medical Centre, Amsterdam
| | - E L de Vrij
- Department of Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - J G M Burgerhof
- Department of Epidemiology, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands
| | - J Saye
- ViroPharma, Inc., Exton, PA, USA
| | - M R Daha
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groninge, Groningen.,Department of Nephrology, University of Leiden, Leiden University Medical Center, Leiden
| | - H G Leuvenink
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | | | - M A J Seelen
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groninge, Groningen
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5
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van Werkhoven MB, Damman J, van Dijk MCRF, Daha MR, de Jong IJ, Leliveld A, Krikke C, Leuvenink HG, van Goor H, van Son WJ, Olinga P, Hillebrands JL, Seelen MAJ. Complement mediated renal inflammation induced by donor brain death: role of renal C5a-C5aR interaction. Am J Transplant 2013; 13:875-882. [PMID: 23398742 DOI: 10.1111/ajt.12130] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Revised: 11/26/2012] [Accepted: 12/10/2012] [Indexed: 01/25/2023]
Abstract
Kidneys retrieved from brain-dead donors have impaired allograft function after transplantation compared to kidneys from living donors. Donor brain death (BD) triggers inflammatory responses, including both systemic and local complement activation. The mechanism by which systemic activated complement contributes to allograft injury remains to be elucidated. The aim of this study was to investigate systemic C5a release after BD in human donors and direct effects of C5a on human renal tissue. C5a levels were measured in plasma from living and brain-dead donors. Renal C5aR gene and protein expression in living and brain-dead donors was investigated in renal pretransplantation biopsies. The direct effect of C5a on human renal tissue was investigated by stimulating human kidney slices with C5a using a newly developed precision-cut method. Elevated C5a levels were found in plasma from brain-dead donors in concert with induced C5aR expression in donor kidney biopsies. Exposure of precision-cut human kidney slices to C5a induced gene expression of pro-inflammatory cytokines IL-1 beta, IL-6 and IL-8. In conclusion, these findings suggest that systemic generation of C5a mediates renal inflammation in brain-dead donor grafts via tubular C5a-C5aR interaction. This study also introduces a novel in vitro technique to analyze renal cells in their biological environment.
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Affiliation(s)
- M B van Werkhoven
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - J Damman
- Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M C R F van Dijk
- Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M R Daha
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.,Department of Nephrology, Leiden University Medical Center, Leiden, the Netherlands
| | - I J de Jong
- Department of Urology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - A Leliveld
- Department of Urology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - C Krikke
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - H G Leuvenink
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - H van Goor
- Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - W J van Son
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - P Olinga
- Department of Pharmaceutical Technology and Biopharmacy, University of Groningen, Groningen Research Institute of Pharmacy, Groningen, the Netherlands
| | - J-L Hillebrands
- Department of Pathology and Medical Biology, Division of Pathology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - M A J Seelen
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
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6
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Damman J, Daha MR, Leuvenink HG, van Goor H, Hillebrands JL, Dijk MCV, Hepkema BG, Snieder H, Born JVD, de Borst MH, Bakker SJ, Navis GJ, Ploeg RJ, Seelen MA. Association of complement C3 gene variants with renal transplant outcome of deceased cardiac dead donor kidneys. Am J Transplant 2012; 12:660-8. [PMID: 22176838 DOI: 10.1111/j.1600-6143.2011.03880.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Local renal complement activation by the donor kidney plays an important role in the pathogenesis of renal injury inherent to kidney transplantation. Contradictory results were reported about the protective effects of the donor C3F allotype on renal allograft outcome. We investigated the influence of the donor C3F allotype on renal transplant outcome, taking all different donor types into account. C3 allotypes of 1265 donor-recipient pairs were determined and divided into four genotypic groups according to the C3F allotype of the donor and the recipient. The four genotypic groups were analyzed for association with primary nonfunction (PNF), delayed graft function, acute rejection, death-censored graft survival and patient survival. Considering all donor types, multivariable analysis found no association of the donor C3F allotype with renal allograft outcome. Also, for living and deceased brain-dead donors, no association with allograft outcome was found. Post hoc subgroup analysis within deceased cardiac dead (DCD) donors revealed an independent protective association of donor C3F allotype with PNF. This study shows that the donor C3F allotype is not associated with renal allograft outcome after kidney transplantation. Subgroup analysis within DCD donors revealed an independent protective association of the donor C3F allotype with PNF, which is preliminary and warrants further validation.
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Affiliation(s)
- J Damman
- Department of Surgery, University Medical Center Groningen, Groningen, the Netherlands.
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de Groot M, Keizer PP, de Haan BJ, Schuurs TA, Leuvenink HG, van Schilfgaarde R, de Vos P. Microcapsules and their ability to protect islets against cytokine-mediated dysfunction. Transplant Proc 2001; 33:1711-2. [PMID: 11267481 DOI: 10.1016/s0041-1345(00)02653-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- M de Groot
- Department of Surgery, Groningen University Hospital, Groningen, The Netherlands
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8
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Leuvenink HG, Bleumer EJ, Bongers LJ, van Bruchem J, van der Heide D. Effect of short-term propionate infusion on feed intake and blood parameters in sheep. Am J Physiol 1997; 272:E997-1001. [PMID: 9227443 DOI: 10.1152/ajpendo.1997.272.6.e997] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The hypothesis that propionate is a short-term feed intake-regulating agent was studied. Mature wether sheep were infused over 20 min with Na propionate into the mesenteric vein, while feed intake and feeding pattern were monitored over 1.5 h. Feed intake was reduced by infusions at 2 mmol/min, which were associated with marked increases in jugular as well as portal concentrations of insulin, glucose, and propionate. In a second experiment, animals were infused with 2 mmol/min Na propionate into the portal vein. No decrease in feed intake was observed, although there were similar increases in insulin, glucose, and propionate as found in mesenteric vein-infused animals. It is concluded that mesenteric propionate in high doses acts as a satiety factor. Possible explanations for the difference between site of infusion may be a different distribution of the infusate over the liver and/or the presence of propionate-sensitive receptors in the mesenteric/portal vein region. It seems unlikely that insulin concentrations are involved in inducing satiety in propionate-infused animals.
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Affiliation(s)
- H G Leuvenink
- Department of Human and Animal Physiology, Wageningen Institute of Animal Sciences, Agricultural University, The Netherlands
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9
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Abstract
Sheep and pigs with chronic silastic catheters with a partial blockage of the catheter were treated locally with streptokinase. After one week of treatment all affected catheters were patent again for many weeks. In sheep it proved necessary to use the enzyme treatment as a maintenance tool by contrast with pigs. This treatment may reduce the number of animals used in long-term trials requiring vascular access.
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Affiliation(s)
- H G Leuvenink
- Wageningen Institute of Animal Sciences, Department of Human and Animal Physiology, Agricultural University Wageningen, The Netherlands
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