Abstract：
BACKGROUND:Postoperative ileus, a transient impairment of bowel motility initiated by intestinal inflammation, is common after an abdominal operation and leads to increased hospital stays and costs. Hydrogen has potent anti-inflammatory and antioxidant properties and potential therapeutic value. Solubilized hydrogen may be a portable and practical means of administering therapeutic hydrogen gas. We hypothesized that intraperitoneal administration of hydrogen-rich saline would ameliorate postoperative ileus. METHODS:Ileus was induced via surgical manipulation in mice and rats. The peritoneal cavity was filled with 1.0 mL saline or hydrogen-rich saline (≥1.5-2.0 ppm) before closure of the abdominal incision. Intestinal transit was assessed 24 hours postoperatively. Inflammation was examined by quantitation of neutrophil extravasation and expression of proinflammatory markers. Nitric oxide production was assessed in cultured muscularis propria. RESULTS:Surgical manipulation resulted in a marked delay in intestinal transit and was associated with upregulation of proinflammatory cytokines and increased neutrophil extravasation. Bowel dysmotility, induced by surgical manipulation and inflammatory events, was significantly attenuated by intra-abdominal administration of hydrogen-rich saline. Nitric oxide production in the muscle layers of the bowel was inhibited by hydrogen treatment. CONCLUSION:A single intraperitoneal dose of hydrogen-rich saline ameliorates postoperative ileus by inhibiting the inflammatory response and suppressing nitric oxide production.
journal_name
Surgeryjournal_title
Surgeryauthors
Okamoto A,Kohama K,Aoyama-Ishikawa M,Yamashita H,Fujisaki N,Yamada T,Yumoto T,Nosaka N,Naito H,Tsukahara K,Iida A,Sato K,Kotani J,Nakao Adoi
10.1016/j.surg.2016.05.026subject
Has Abstractpub_date
2016-09-01 00:00:00pages
623-31issue
3eissn
0039-6060issn
1532-7361pii
S0039-6060(16)30201-Xjournal_volume
160pub_type
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