Effects of angiopeptin on transplant arteriosclerosis in the rat.

Abstract

The influence of the somatostatin analogue angiopeptin on transplant arteriosclerosis was investigated using two aortic transplantation rat models. One was characterized by ischemia/reperfusion-induced changes in syngeneic transplants while immunologically induced changes dominated in the other allogeneic model. Angiopeptin, 100 micrograms/kg per day, was administered continuously until the sacrifice of the rats after 8 weeks. No additional immunosuppression was used in either model. An image analysis system was used to quantify the intimal and medial thicknesses of the grafts. In the syngeneic grafts, the intimal thickness was less than 50% of that of control grafts (P < 0.05), but no difference was seen in the allogeneic model. The expression of selected cells, TGF-beta s, and PDGF and PDGF alpha-receptors was detected immunohistochemically and displayed a similar picture in control and angiopeptin-treated grafts in both models. We conclude that angiopeptin has no clear immunosuppressive properties but may counteract ischemia-induced transplant arteriosclerosis.

• Authors: M L Akyürek, A Wanders, M Aurivillius, E Larsson, K Funa, B C Fellström
• Journal: Transplant international : official journal of the European Society for Organ Transplantation (Transpl Int) Vol. 8 Issue 2 Pg. 103-10 ( 1995) ISSN: 0934-0874 [Print] Switzerland
• PMID: 7766291 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Oligopeptides
• Peptides, Cyclic
• Platelet-Derived Growth Factor
• Transforming Growth Factor beta
• lanreotide
• Somatostatin

Topics

• Animals
• Aorta (transplantation)
• Arteriosclerosis (drug therapy, etiology)
• Image Processing, Computer-Assisted
• Male
• Oligopeptides (pharmacology)
• Peptides, Cyclic
• Platelet-Derived Growth Factor (analysis)
• Rats
• Reperfusion Injury (complications)
• Somatostatin (analogs & derivatives, pharmacology)
• Transforming Growth Factor beta (analysis)
• Transplantation, Homologous (pathology)
• Transplantation, Isogeneic (pathology)
• Tunica Intima (pathology)
• Tunica Media (pathology)