1993 Fiscal Year Final Research Report Summary
STUDY ON ISCHEMIC TOLERRANCE OF FATTY LIVER -INFLUENCE OF GRADE OF FATTY DEPOSITION-
| Project/Area Number |
04670774
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Digestive surgery
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| Research Institution | GIFU UNIVERSITY |
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Principal Investigator |
IIDA Tatsumi GIFU UNIVERSITY HOSPITAL ASSISTANT PROFESSOR, 医学部・附属病院, 講師 (20222812)
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| Co-Investigator(Kenkyū-buntansha) |
SENGA Shohei GIFU UNIVERSITY HOSPITAL INSTRUCTOR, 医学部・附属病院, 助手 (20226690)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Fatty liver / Fepatic ischemia-reperfusion injury / L-SOD / SOD / Bile flow / High energy phosphate / Plasma amino acid profiles |
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| Research Abstract |
We have studied on the ischemic tolerance of the fatty liver in the rat. Recovery rate of bile flow after resperfusion (RRBF) is the good indicator of the viability of the warm-ischemically injured liver. Among the values of plasma free amino acids, alanine, glycine, methionine, aromatic amino acids and total plasma free amino acids correlate inversely to RRBF.These data suggested that these amino acids would be the good indicators of the viability of the warm-ischemically injured liver.
Liposomal encapsulated superoxide dismutase (L-SOD) contains superoxide dismutase, a highly specific scavenger of superoxide anion, in the liposomal encapsulation. By the administration of L-SOD, serum transaminases (GOT,GPT,LDH) are decreased and RRBF is increased after reperfusion. These data suggested that L-SOD has protective effect on the ischemically injured liver.
We have divided rats into 3 groupes to investigate the influence of the fatty deposition on the ischemic tolerance. Group 1 : normal liver group, group 2 : mild fatty liver group, group 3 : severe fatty liver group. All rats underwent hepatic ischemia for 60 minutes. One week survival after reperfusion in group 1 (100 %) and group 2 (75 %) are higher than in group 3 (0 %). RRBF in group 1 (52 %) is higher than in group 2 (34 %) and in group 2 is higher than in group 3 (11 %). Hepatic tissue ATP and total adenine nucleotides in group 1 are higher than in group 2 and group 3 at preischemia and 60 minutes after reperfusion.
These data suggested that :
Though mild fatty livers would not have ischemic resistances as much as normal livers, they have better ischemic resistance than severe fatty livers.
But energy state in fatty liver should be depressed compared with in normal liver even though the fatty deposit in liver is mild
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Research Products
(10 results)
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[Publications] Shohei Senga, Atsuyoshi Onitsuka, Hideo Ito, Masatoshi Hayashi, Katagiri Yoshihumi, Hirokazu Matsutomo, Tomoyuki Miyata, Kei Watanabe, Koji Miyamoto, Tatsumi Iida, Masatomo Hayashi, Hajime Hirose: Japanese Journal of Transplantation. 29. 6-12 (1994)
Description
「研究成果報告書概要(欧文)」より
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[Publications] Shohei Senga, Atsuyoshi Onitsuka, Hideo Ito, Naoki Imai, Masaya Shibata, Masatoshi Hayashi, Yoshihumi Katagiri, Hirokazu Matsutomo, Tomoyuki Miyata, Kei Watanabe, Tatsumi Iida, Masatomo Hayashi, Hajime Hirose: "Study on serum amino acid profiles after hepatic ischemia in the rat. Beneficial effect of liposomal encapsulated superoxide dismutase." Japanese Journal of Transplantation. in printing.
Description
「研究成果報告書概要(欧文)」より
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