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01 December 2008

Development of jejunal graft damage during intestinal transplantation

Ján Varga, Pavel Staško, Štefan Tóth, Zuzana Pristášová, Martin Bujdoš, Mikuláš Pomfy

Ann Transplant 2009; 14(3): 62-69 :: ID: 880543


Background: Intestinal transplantation (ITx) represents difficult life-saving intervention reserved for patients with irreversible intestinal failure. A serious complication of ITx is jejunal graft (JG) damage. The aim of the study was to evaluate the development of JG damage during ITx and determine the share of pathological elements (mechanical manipulation, ischemia, reperfusion) in this damage.
Material/Methods: Male Wistar rats (n=60; 30 donors and 30 recipients) were used. The harvest of JG as well as heterotopic allotransplantation was performed using a technique adapted from Balaz et al. (2003). In all transplantations, three samples of JG were obtained: immediately after harvest (Sa1), after preservation (Sa2) and 60min after transplantation (Sa3). The samples were stained using the Hematoxylin&Eosin method and histopathological injury index (HII) was assessed using Park/Chiu classification. For detection and quantification of neuroendocrine cells (NECs) Singh's modification of the Masson-Hamperl argentaffin technique was used.
Results: The lowest level of HII was detected in Sa1=0.25±0.18; higher after preservation Sa2=1.42±0.38 and the highest HII was observed after transplantation Sa3=3.08±0.38. The percentage share of mechanical manipulation with the graft in jejunal damage during ITx was 8.11% (Sa1), the share of the ischemic element represented 37.98% (Sa2) and reperfusion had 53.91% of the share in jejunal damage (Sa3). The activity of NECs had sinusoidal character (Sa1=0.5±0.1; Sa2=1.4±0.0; Sa3=0.35±0.05).
Conclusions: The development of JG damage during ITx had progressive character. Mechanical manipulation had minimal influence on jejunal damage. One third of damage was caused by the ischemic component and the largest impact on JG damage resulted from reperfusion.

Keywords: Intestinal transplantation, neuroendocrine cells



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