Abstract
Apoptosis is a form of programmed cell death that plays an important role in small intestine ischemia-reperfusion (IR) injury. The aim of this study was to determine the total proportion of apoptotic cell death (apoptotic index) following injury induced by ischemia and during various subsequent reperfusion periods, total histopathological status and the intestine regeneration dynamics after the IR injury. Experimental animals, Wistar rats (n = 45) were divided into three experimental and one control groups. In the experimental groups 1 h ischemia was followed by 1, 4 and 24 h reperfusion. Intestinal ischemia was induced by superior mesenteric artery (SMA) occlusion. Segments of jejunum were stained with hematoxylin and eosin and studied immunohistochemically using M30 CytoDEATH and in situ TUNEL methods for apoptosis detection. Our experimental data showed that: (i) apoptosis is an important form of cell death in the small intestine after IR injury induced by SMA occlusion; (ii) maximum levels of histopathological damage and apoptotic index of mucosa occurred after 1 h ischemia and 1 h of reperfusion; and (iii) mucosa possesses great regeneration ability. The lowest levels of histopathological damage and apoptotic index were observed in the group with 1 h ischemia and 24 h reperfusion where, however, the highest mitotic index was present.
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Abbreviations
- CK:
-
cytokeratin
- H&E:
-
hematoxylin and eosin
- IR:
-
ischemia-reperfusion
- MI:
-
mitotic index
- PCD:
-
programmed cell death
- SMA:
-
superior mesenteric artery
- TUNEL:
-
terminal deoxynucleotidyltransferase-mediated deoxyuridine triphosphate in situ nick end-labelling
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Tóth, Š., Pomfy, M., Wohlfahrt, P. et al. Detection of early stages of apoptosis in experimental intestinal ischemia-reperfusion injury. Biologia 62, 491–497 (2007). https://doi.org/10.2478/s11756-007-0098-0
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DOI: https://doi.org/10.2478/s11756-007-0098-0