BACKGROUND: Liver resection is a feasible treatment for multiple liver diseases. There is no evidence about the impact of age on liver regeneration. OBJECTIVE: To assess the effect of age on liver regeneration in an experimental in vivo animal model of 70%-partial hepatectomy. METHODS: Forty young (Y) and old (O) Wistar male rats (n = 80) were distributed into four groups [controls (C), sham operated (SO), hepatectomy 6 h (H6), and 48 h (H48)]. Different morphometric and biochemical factors, oxidative and nitrosative stress, lipid peroxidation, cytokines kinetics, and histopathologic tissular parameters were determined. RESULTS: Early postoperative mortality was higher in aged rats (P = 0.049). Morphometric determinations, liver regeneration index, and total volume weight were favorable to young rats. Serum transaminase levels were higher in aged rats. Parameters of necrosis (measured by histopathologic injury [HI: 0-I-II-III]), regeneration (measured by bromodeoxyuridine-BrdU incorporation) and apoptosis (determined by the TDT-mediated dUTP nick end labeling-TUNEL) were well-synchronized in young rats. Parameters of oxidative stress such as reduced (GSH), oxidized (GSSG) glutathione and lipid peroxidation (measured by hepatic malondialdehyde -MDA-) were lower in young animals throughout the studied period. Nitrosative stress measured by nitric oxide (NO) end-products was higher in late stages in resected old rats. Pro-inflammatory cytokines (TNF- α) reached higher and earlier levels in aged rats while pro-regenerative cytokines (IL-6) were significantly higher in early stages for young rats and in late stages for aged rats. The levels of TGF-β were higher in young rats. CONCLUSION: Liver regeneration is delayed and reduced in aged animals submitted to liver resection.
BACKGROUND: Liver resection is a feasible treatment for multiple liver diseases. There is no evidence about the impact of age on liver regeneration. OBJECTIVE: To assess the effect of age on liver regeneration in an experimental in vivo animal model of 70%-partial hepatectomy. METHODS: Forty young (Y) and old (O) Wistar male rats (n = 80) were distributed into four groups [controls (C), sham operated (SO), hepatectomy 6 h (H6), and 48 h (H48)]. Different morphometric and biochemical factors, oxidative and nitrosative stress, lipid peroxidation, cytokines kinetics, and histopathologic tissular parameters were determined. RESULTS: Early postoperative mortality was higher in aged rats (P = 0.049). Morphometric determinations, liver regeneration index, and total volume weight were favorable to young rats. Serum transaminase levels were higher in aged rats. Parameters of necrosis (measured by histopathologic injury [HI: 0-I-II-III]), regeneration (measured by bromodeoxyuridine-BrdU incorporation) and apoptosis (determined by the TDT-mediated dUTP nick end labeling-TUNEL) were well-synchronized in young rats. Parameters of oxidative stress such as reduced (GSH), oxidized (GSSG) glutathione and lipid peroxidation (measured by hepatic malondialdehyde -MDA-) were lower in young animals throughout the studied period. Nitrosative stress measured by nitric oxide (NO) end-products was higher in late stages in resected old rats. Pro-inflammatory cytokines (TNF- α) reached higher and earlier levels in aged rats while pro-regenerative cytokines (IL-6) were significantly higher in early stages for young rats and in late stages for aged rats. The levels of TGF-β were higher in young rats. CONCLUSION: Liver regeneration is delayed and reduced in aged animals submitted to liver resection.
Authors: Martin de Santibañes; Agustin Dietrich; Fernando A Alvarez; Victoria Ardiles; Monica Loresi; Maximiliano D'adamo; Eduardo de Santibañes Journal: J Gastrointest Surg Date: 2015-10-20 Impact factor: 3.452
Authors: Laurent Sulpice; Michel Rayar; Boris Campillo; Claire Pery; Antoine Guillaud; Bernard Meunier; Karim Boudjema Journal: World J Surg Date: 2014-04 Impact factor: 3.352
Authors: Philipp Stiegler; Michael Sereinigg; Andreas Puntschart; Andrea Bradatsch; Thomas Seifert-Held; Iris Wiederstein-Grasser; Bettina Leber; Elke Stadelmeyer; Nadia Dandachi; Siglinde Zelzer; Florian Iberer; Vanessa Stadlbauer Journal: J Transl Med Date: 2013-10-02 Impact factor: 5.531
Authors: Gloria Alvarez-Sola; Iker Uriarte; Maria U Latasa; Maddalen Jimenez; Marina Barcena-Varela; Eva Santamaría; Raquel Urtasun; Carlos Rodriguez-Ortigosa; Jesús Prieto; Fernando J Corrales; Anna Baulies; Carmen García-Ruiz; Jose C Fernandez-Checa; Pedro Berraondo; Maite G Fernandez-Barrena; Carmen Berasain; Matías A Avila Journal: Cell Death Dis Date: 2017-10-05 Impact factor: 8.469