Logo Annals of Transplantation Logo Annals of Transplantation Logo Annals of Transplantation

17 May 2016 : Original article  

Binding of ATGs to Endothelial Cells In Vivo

Andres Beiras-FernandezABCDEFG, Astrid Hernandez-SierraDEF, Uwe SchulzCD, Manfred RichterBCD, Eckart TheinACDE, Anton MoritzD, Isabella WernerABCD

DOI: 10.12659/AOT.896158

Ann Transplant 2016; 21:311-316

Abstract

BACKGROUND: Polyclonal anti-thymocyte globulins (ATGs) are immunosuppressive drugs widely used in induction of immunosuppression and treatment of acute rejection after solid organ transplantation. We have previously demonstrated that ATGs bind to endothelial cells in vitro, and are able to modulate ECs. The aim of this study was to investigate the binding of ATGs to endothelial cells under in vivo conditions.

MATERIAL AND METHODS: Muscle biopsies from extremities of cynomolgus monkeys were obtained after ischemia/reperfusion at 4°C. ATGs (Thymoglobulin, Sanofi-Aventis, France; 1 mg/kg) were added to the blood 30 min prior to the reperfusion. Biopsies (n=10) of patients undergoing heart transplantation and preoperatively treated with ATGs (Thymoglobulin, Sanofi-Aventis, France; 1.5 mg/kg) as induction therapy were also analyzed 6 hours and 7 days after induction. Binding of ATGs to ECs was analyzed with an anti-rabbit IgG antibody by means of immunohistochemistry.

RESULTS: Binding of ATGs to endothelial cells could be demonstrated in vivo in our animal experiments 4 hours after reperfusion, as well as in the clinical biopsies 6 hours after induction of immunosuppression in heart transplant patients, showing a preferred localization in post-capillary veins. No expression of ATGs on the endothelial surface could be observed after 7 days, suggesting that ATGs may be washed out from the endothelial surface in a time-dependent manner.

CONCLUSIONS: Our results show that ATGs are able to bind to endothelial cells in an experimental model and in clinical practice, supporting preconditioning strategies with ATGs in solid organ transplantation.

Keywords: endothelial cells, Heart Transplantation, Immunosuppressive Agents

0 Comments

SARS-CoV-2/COVID-19

17 June 2022 : Case report  

Extrapulmonary Manifestations of SARS-CoV-2: A Report of 3 Cases and a Literature Review

Ann Transplant In Press; DOI: 10.12659/AOT.935874  

12 April 2022 : Letter/Correspondence  

Pancreas Allograft Thrombosis as a Post-COVID-19 Complication in a Diabetic Patient After Pancreas Transpla...

Ann Transplant 2022; 27:e935863

12 November 2021 : Original article  

Coronavirus Disease 2019 (COVID-19) in Solid Organ Transplant Recipients: A Case-Control Study

Ann Transplant 2021; 26:e933152

26 October 2021 : Original article  

Safety of Antithymocyte Globulin Use in Kidney Graft Recipients During the COVID-19 Pandemic

Ann Transplant 2021; 26:e933001

In Press

23 Jun 2022 : Original article  

Evaluation of Deceased Donor Kidney Transplantation in the Eurotransplant Senior Program in Comparison to S...

Ann Transplant In Press; DOI: 10.12659/AOT.936514  

21 Jun 2022 : Case report  

Extrapulmonary Manifestations of SARS-CoV-2: A Report of 3 Cases and a Literature Review

Ann Transplant In Press; DOI: 10.12659/AOT.935874  

20 Jun 2022 : Original article  

The Association Between Tacrolimus Levels and Hyperkalemia in Allograft Recipients Who Underwent Heart or L...

Ann Transplant In Press; DOI: 10.12659/AOT.935607  

15 Jun 2022 : Original article  

Donor CYP3A5 Expression Decreases Renal Transplantation Outcomes in White Renal Transplant Recipients

Ann Transplant In Press; DOI: 10.12659/AOT.936276  

Most Viewed Current Articles

26 Jan 2022 : Review article  

Recurrence of Hepatocellular Carcinoma After Liver Transplantation: Risk Factors and Predictive Models

DOI :10.12659/AOT.934924

Ann Transplant 2022; 27:e934924

29 Dec 2021 : Original article  

Efficacy and Safety of Tacrolimus-Based Maintenance Regimens in De Novo Kidney Transplant Recipients: A Sys...

DOI :10.12659/AOT.933588

Ann Transplant 2021; 26:e933588

24 Jul 2020 : Review article  

Kidney Transplantation in the Times of COVID-19 – A Literature Review

DOI :10.12659/AOT.925755

Ann Transplant 2020; 25:e925755

15 Mar 2022 : Case report  

Combined Liver, Pancreas-Duodenum, and Kidney Transplantation for Patients with Hepatitis B Cirrhosis, Urem...

DOI :10.12659/AOT.935860

Ann Transplant 2022; 27:e935860

Your Privacy

We use cookies to ensure the functionality of our website, to personalize content and advertising, to provide social media features, and to analyze our traffic. If you allow us to do so, we also inform our social media, advertising and analysis partners about your use of our website, You can decise for yourself which categories you you want to deny or allow. Please note that based on your settings not all functionalities of the site are available. View our privacy policy.

Annals of Transplantation eISSN: 2329-0358
Annals of Transplantation eISSN: 2329-0358