M S Rao1, J K Reddy. 1. Department of Pathology, Northwestern University Medical School, Chicago, IL 60611, USA. s-rao@northwestern.edu
Abstract
BACKGROUND/AIMS: Hepatic resection for primary and secondary liver tumors and transplantation of segments of liver into patients with severe liver disease has become a common practice. However, the information on the regenerative potential of liver with various underlying diseases, particularly, the common disorder fatty change, is sparse. METHODOLOGY: In the present study we have evaluated the regenerative potential of liver in mice lacking fatty acyl-CoA oxidase (AOX-/-) after partial hepatectomy. Liver regeneration was assessed by measuring mitotic activity and 5-bromo-2'-deoxyuridine (BrdU) labeling using immunohistochemistry. RESULTS: BrdU labeling index in AOX-/- mice was 99 +/- 32, 156 +/- 28, 54 +/- 13, and 120 +/- 33 per 1000 cells at 48, 60, 72 and 84 hours, respectively after partial hepatectomy. Comparable BrdU labeling index was observed in AOX+/+ mice. Similarly, mitotic index in both groups was comparable. CONCLUSIONS: These results suggest that DNA synthesis after partial hepatectomy in genetically altered mice with microvesicular fatty change is unaffected.
BACKGROUND/AIMS: Hepatic resection for primary and secondary liver tumors and transplantation of segments of liver into patients with severe liver disease has become a common practice. However, the information on the regenerative potential of liver with various underlying diseases, particularly, the common disorder fatty change, is sparse. METHODOLOGY: In the present study we have evaluated the regenerative potential of liver in mice lacking fatty acyl-CoA oxidase (AOX-/-) after partial hepatectomy. Liver regeneration was assessed by measuring mitotic activity and 5-bromo-2'-deoxyuridine (BrdU) labeling using immunohistochemistry. RESULTS:BrdU labeling index in AOX-/-mice was 99 +/- 32, 156 +/- 28, 54 +/- 13, and 120 +/- 33 per 1000 cells at 48, 60, 72 and 84 hours, respectively after partial hepatectomy. Comparable BrdU labeling index was observed in AOX+/+ mice. Similarly, mitotic index in both groups was comparable. CONCLUSIONS: These results suggest that DNA synthesis after partial hepatectomy in genetically altered mice with microvesicular fatty change is unaffected.
Authors: Elizabeth P Newberry; Susan M Kennedy; Yan Xie; Jianyang Luo; Susan E Stanley; Clay F Semenkovich; Roseanne M Crooke; Mark J Graham; Nicholas O Davidson Journal: Hepatology Date: 2008-10 Impact factor: 17.425