Intestinal and hepatic response to combined partial hepatectomy and small bowel resection in mice.
BACKGROUND
Both partial-hepatectomy (PHx) and massive small bowel resection (SBR) are strong mitogenic signals to the remnant liver and intestine, respectively. This study tested the hypothesis that PHx was an additive signal for intestinal adaptation after massive SBR.


METHODS
Male mice underwent either sham SBR or 50% proximal SBR. Mice from these two groups were then subjected to a 70% PHx or sham PHx. After 3 days, parameters of intestinal adaptation and liver regeneration were recorded in the remnant intestine and liver, respectively.


RESULTS
Intestinal adaptation following SBR occurred normally, but was not enhanced after concomitant PHx. On the other hand, SBR impaired the regenerative ability of the liver following PHx.


CONCLUSIONS
Intestinal adaptation after SBR takes priority over liver regeneration after PHx. These data implicate a hierarchy with regard to adaptive alterations to organ loss and endorse an important role for the intestinal mucosa in the regulation of hepatic regeneration.
Nelson
Lindsey A
LA
Division of Pediatric Surgery, Children's Hospital Medical Center, Department of Surgery, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA.
O'Brien
David P
DP
Kemp
Christopher J
CJ
Williams
Jodi L
JL
Dunke-Jacobs
Erik
E
Erwin
Christopher R
CR
Warner
Brad W
BW
D000222:Adaptation, Physiological; D000818:Animals; D015153:Blotting, Western; D006498:Hepatectomy / Q000379:methods; D007421:Intestine, Small / Q000502:physiology* / Q000601:surgery*; D008099:Liver / Q000166:cytology / Q000473:pathology / Q000502:physiology; D008115:Liver Regeneration / Q000502:physiology*; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D023421:Models, Animal; D009929:Organ Size; D018809:Proliferating Cell Nuclear Antigen / Q000502:physiology
D018809:Proliferating Cell Nuclear Antigen