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


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

Add Comment 0 Comments

In Press

02 Apr 2024 : Original article  

Liver Transplantation from Brain-Dead Donors with Hepatitis B or C in South Korea: A 2014-2020 Korean Organ...

Ann Transplant In Press; DOI: 10.12659/AOT.943588  

02 Apr 2024 : Original article  

Effect of Dexmedetomidine Combined with Remifentanil on Emergence Agitation During Awakening from Sevoflura...

Ann Transplant In Press; DOI: 10.12659/AOT.943281  

03 Apr 2024 : Review article  

Alternative Therapies in Transplantology as a Promising Perspective in Medicine

Ann Transplant In Press; DOI: 10.12659/AOT.943387  

15 Apr 2024 : Original article  

Physical Activity Levels in Transplant Recipients

Ann Transplant In Press; DOI: 10.12659/AOT.944101  

Most Viewed Current Articles

05 Apr 2022 : Original article  

Impact of Statins on Hepatocellular Carcinoma Recurrence After Living-Donor Liver Transplantation

DOI :10.12659/AOT.935604

Ann Transplant 2022; 27:e935604

12 Jan 2022 : Original article  

Risk Factors for Developing BK Virus-Associated Nephropathy: A Single-Center Retrospective Cohort Study of ...

DOI :10.12659/AOT.934738

Ann Transplant 2022; 27:e934738

22 Nov 2022 : Original article  

Long-Term Effects of Everolimus-Facilitated Tacrolimus Reduction in Living-Donor Liver Transplant Recipient...

DOI :10.12659/AOT.937988

Ann Transplant 2022; 27:e937988

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