murine-cervical-aortic-transplantation-model-using-modified-non

Murine Cervical Aortic Transplantation Model using a Modified Non-Suture Cuff Technique

With the introduction of powerful immunosuppressive protocols, distinct advances are possible in the prevention and therapy of acute rejection episodes. ...

Ludwig Maximilian University of Munich

Inhibition or destruction of Kupffer cells (KC) may protect against ischemia-reperfusion (IR) induced primary graft nonfunction (PNF) in liver transplantation. Besides KC activation, PNF is characterized by microvascular perfusion failure, intrahepatic leukocyte accumulation, cell death and hepatocellular dysfunction. KCs can be inactivated by different agents including gadolinium chloride (GdCl3), methyl palmitate (MP) and glycine. The effects of three KC inactivators on IR-injury after rat liver transplantation were compared in the present study. Lewis liver donors were treated with GdCl3, MP, glycine or saline (control). Liver grafts were transplanted following 24 h storage (UW solution). KC populations and IR damage were assessed by histologic analysis, quantitative real-time polymerase chain reaction (RT-PCR) and intravital microscopy. The number of hepatic ED-1 positive macrophages was diminished after GdCl3 (114.8+/-4.4/mm2 liver tissue) and MP treatment (176.0+/-5.0), versus the glycine (263.9+/-5.5) and control (272.1+/-5.6) groups. All three treatment modalities downregulated phagocytic activity for latex particles, paralleled by reduced microvascular injury (acinar perfusion index, GdCl3: 0.75+/-0.03; MP: 0.83+/-.03; glycine: 0.84+/-0.03; 0.63+/-0.03). Quantitative RT-PCR revealed elevated myeloperoxidase mRNA after glycine versus GdCl3 and MP pretreatment (3.2- and 3.4-fold, P=0.011, respectively), without difference to controls (2.9-fold of glycine). TNFalpha-mRNA was reduced after glycine- (5.2-fold), GdCl3- (19.7-fold), MP-treatment (39.5-fold) compared with controls. However, profound prevention of intrahepatic cell death and liver graft failure was solely achieved with glycine preconditioning. Different than GdCl3 and MP, glycine modulates rather than destroys KCs. Glycine appears to preserve cell viability and to TNFalpha/leukocyte dependent organ regeneration capacity, which is related to increase graft survival following liver transplantation.

Benefit of Kupffer cell modulation with glycine versus Kupffer cell depletion after liver transplantation in the rat: effects on postischemic reperfusion injury, apoptotic cell death graft regeneration and survival.

Post-hepatectomy liver failure (PHLF) is the major cause of death following liver resection. The aim of this study was to evaluate the feasibility of an intraoperative simulation of post-resection liver function.

Intraoperative simulation of remnant liver function during anatomic liver resection with indocyanine green clearance (LiMON) measurements.

CyberKnife radiosurgery (CK) is an effective tool for the treatment of malignancies. Its greatest potential is in high-dose radiosurgery delivered to targets in organs that move with respiration, e.g., liver tumors. For hepatocellular carcinoma (HCC), however, surgical treatment (resection, transplantation) is most likely to produce long-term survival; for non-resectable tumors, therapies other than radiosurgery are typically recommended. This study evaluated the long-lasting anti-tumor effects of CK combined with surgery in patients with HCC. MATERIALS AND METHODS : Eighteen patients (three women, 15 men) were included in this prospective observational study. They received 21 single-fraction CK treatments (26 Gy). Patient characteristics, treatment effects, tumor response (according to the Response Evaluation Criteria In Solid Tumors (RECIST) grading) and survival were measured for a median period of 29 months.

Markus Rentsch

Department of General,
Visceral,
and Transplant Surgery,
Department of General, Visceral, and Transplant Surgery

Ludwig Maximilian University of Munich

Murine Cervical Aortic Transplantation Model using a Modified Non-Suture Cuff Technique

Markus Rentsch

Department of General,Visceral,and Transplant Surgery,Department of General, Visceral, and Transplant Surgery

Ludwig Maximilian University of Munich

Murine Cervical Aortic Transplantation Model using a Modified Non-Suture Cuff Technique

Department of General,
Visceral,
and Transplant Surgery,
Department of General, Visceral, and Transplant Surgery