title: Attenuation of intestinal ischemia/reperfusion induced liver and lung injury by intraperitoneal administration of (-)-epigallocatechin-3-gallate.
abstract: The aim of this study was to evaluate the effect of ( - )-epigallocatechin-3-gallate (EGCG), a natural antioxidant, on liver and lungs after warm intestinal ischemia/reperfusion (I/R). Thirty male Wistar rats were equally divided into a sham-operation group, an intestinal I/R group and an intestinal I/R group pretreated with EGCG intraperitoneally. Intestinal ischemia was induced by occlusion of the superior mesenteric artery for 60 min followed by reperfusion for 120 min. Immediately after reperfusion, liver, lung and blood samples were collected and analyzed. Results showed that intestinal I/R increased the levels of aspartate (AST) and alanine (ALT) transaminase in serum to 987 and 752 IU/l, respectively. Malondialdehyde (MDA) increased in liver to 1.524 nmol/g in the group subjected to intestinal I/R compared to 0.995 nmol/g in the sham operation group. MDA was also increased in lungs to 1.581 nmol/g compared to 0.896 nmol/g in the sham operation group. Myeloperoxidase (MPO) increased in liver, after intestinal I/R, to 5.16 U/g compared to 1.59 U/g in the sham operation group. MPO was also increased in lungs to 3.89 U/g compared to 1.65 U/g in the sham operation group. Pretreatment with EGCG decreased serum levels of AST and ALT to 236 and 178 IU/l, respectively. It also decreased mean MDA levels in liver and lungs to 1.061 and 1.008 nmol/g, respectively, and mean MPO levels in liver and lungs to 1.88 and 1.71 U/g, respectively. Light microscopy and transmission electron microscopy examinations showed significant alteration in liver and lungs and protection of liver and lung parenchyma in the animals treated with EGCG.
authors.affiliation: Department of Transplantation Surgery, Medical School, Hippokration Hospital, Aristotle University, Thessaloniki, Greece.
authors.forename: Alexandros E
authors.initials: AE
authors.lastname: Giakoustidis
authors.forename: Dimitrios E
authors.initials: DE
authors.lastname: Giakoustidis
authors.forename: Stavros
authors.initials: S
authors.lastname: Iliadis
authors.forename: Georgios
authors.initials: G
authors.lastname: Papageorgiou
authors.forename: Kokona
authors.initials: K
authors.lastname: Koliakou
authors.forename: Nicholas
authors.initials: N
authors.lastname: Kontos
authors.forename: Ioannis
authors.initials: I
authors.lastname: Taitzoglou
authors.forename: Evropi
authors.initials: E
authors.lastname: Botsoglou
authors.forename: Vasilis
authors.initials: V
authors.lastname: Papanikolaou
authors.forename: Kostas
authors.initials: K
authors.lastname: Atmatzidis
authors.forename: Dimitrios
authors.initials: D
authors.lastname: Takoudas
authors.forename: Antonios
authors.initials: A
authors.lastname: Antoniadis
mesh_terms: D000818:Animals; D002392:Catechin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000494:pharmacology; D007413:Intestinal Mucosa / Q000378:metabolism; D007511:Ischemia / Q000378:metabolism; D015227:Lipid Peroxidation / Q000187:drug effects; D008099:Liver / Q000098:blood supply* / Q000187:drug effects* / Q000378:metabolism; D008168:Lung / Q000098:blood supply* / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D008854:Microscopy, Electron; D008859:Microscopy, Polarization; D051381:Rats; D017208:Rats, Wistar; D015427:Reperfusion Injury / Q000188:drug therapy*
chemical_list: D008315:Malondialdehyde; D002392:Catechin; C045651:epigallocatechin gallate