Abstract | BACKGROUND: METHODS: In vitro (enterocyte anoxia-normoxia) and in vivo (rat intestinal ischemia-reperfusion) models of ischemia-reperfusion injury were tested with or without the addition of hydrogen sulfide. Apoptotic index was determined in vitro, and gross appearance, histology, and villus height (a measure of mucosal integrity) were assessed in vivo. Statistical analysis was performed, and significance was defined as p < 0.05. RESULTS: In vitro, cells treated with 10 microM hydrogen sulfide after 1-hour anoxia experienced a significant decrease in apoptotic index compared with untreated control (0.5 +/- 0.3 percent versus 2.8 +/- 0.7 percent); after 3 hours of anoxia, cells treated with 1 microM, 10 microM, and 100 microM hydrogen sulfide experienced significant decreases in apoptotic index versus untreated control (1.6 +/- 0.8 percent, 1.8 +/- 0.9 percent, and 2.8 +/- 0.7 percent versus 8.6 +/- 1.7 percent). In vivo, intestine treated with [10 microM] or [100 microM] hydrogen sulfide retained normal coloration and villus architecture after 1-hour ischemia; after 2 hours of ischemia, only intestine treated with [10 microM] hydrogen sulfide appeared uninjured. After 1, 2, or 3 hours of ischemia, villus heights of intestine treated with [10 microM] or [100 microM] hydrogen sulfide were significantly higher than heights of non- hydrogen sulfide-treated villi. CONCLUSIONS:
Hydrogen sulfide significantly attenuates ischemia-reperfusion injury in intestinal tissue in vitro and in vivo. These results have significant implications for enteric free tissue transfers and other gastrointestinal procedures in which ischemic intervals may be anticipated.
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Authors | Peter W Henderson, Andrew L Weinstein, Josephine Sung, Sunil P Singh, Vijay Nagineni, Jason A Spector |
Journal | Plastic and reconstructive surgery
(Plast Reconstr Surg)
Vol. 125
Issue 6
Pg. 1670-1678
(Jun 2010)
ISSN: 1529-4242 [Electronic] United States |
PMID | 20517090
(Publication Type: Journal Article)
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Chemical References |
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Topics |
- Animals
- Cell Line
- Cell Survival
(drug effects)
- Cytoprotection
(drug effects)
- Disease Models, Animal
- Enterocytes
(cytology, drug effects)
- Hydrogen Sulfide
(pharmacology)
- In Vitro Techniques
- Jejunum
(drug effects, metabolism, pathology)
- Male
- Microvilli
(drug effects)
- Oxygen
(pharmacology)
- Rats
- Rats, Sprague-Dawley
- Reperfusion Injury
(drug therapy, metabolism, pathology)
- Signal Transduction
(drug effects)
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