BACKGROUND: During surgery, ischaemic pre- (IPC) and post-conditioning (IPO) protects the liver against ischaemia/reperfusion injuries (I/R-injuries). The impact of ischaemic conditioning on liver regeneration has been less well studied. Angiogenesis is an important part of liver regeneration after hepatectomy. The aim of the present study was to investigate the effect of ischaemia/reperfusion and ischaemic conditioning on the expression of genes with angiogenic potential in a model of rat liver ischaemia. METHODS: A model of total liver ischaemia (30 min) and reperfusion (30 min) was employed using Wistar rats. Rats were randomized into five groups: (C) control (IRI) ischaemic, IPC, IPO and IPC + IPO. Liver enzymes were sampled at the end of reperfusion. Liver biopsies were analysed using cDNA microarrays. RESULTS: Alanine aminotransferase (ALT) increased significantly in all the ischaemic groups compared with controls (P= 0.000). Searching databases 99 genes involved in rat liver angiogenesis were identified. Compared with group (C) the number of genes significantly up-regulated was as follows: IRI (n= 5), IPC (n= 24), IPO (n= 33) and IPC + IPO (n= 18). No genes were down-regulated in the four groups compared with controls. CONCLUSION: Ischaemic conditioning, as demonstrated in the present study, seems to be potent activators of angiogenic genes. This might be favourable to the regenerating liver.
BACKGROUND: During surgery, ischaemic pre- (IPC) and post-conditioning (IPO) protects the liver against ischaemia/reperfusion injuries (I/R-injuries). The impact of ischaemic conditioning on liver regeneration has been less well studied. Angiogenesis is an important part of liver regeneration after hepatectomy. The aim of the present study was to investigate the effect of ischaemia/reperfusion and ischaemic conditioning on the expression of genes with angiogenic potential in a model of ratliver ischaemia. METHODS: A model of total liver ischaemia (30 min) and reperfusion (30 min) was employed using Wistar rats. Rats were randomized into five groups: (C) control (IRI) ischaemic, IPC, IPO and IPC + IPO. Liver enzymes were sampled at the end of reperfusion. Liver biopsies were analysed using cDNA microarrays. RESULTS: Alanine aminotransferase (ALT) increased significantly in all the ischaemic groups compared with controls (P= 0.000). Searching databases 99 genes involved in rat liver angiogenesis were identified. Compared with group (C) the number of genes significantly up-regulated was as follows: IRI (n= 5), IPC (n= 24), IPO (n= 33) and IPC + IPO (n= 18). No genes were down-regulated in the four groups compared with controls. CONCLUSION: Ischaemic conditioning, as demonstrated in the present study, seems to be potent activators of angiogenic genes. This might be favourable to the regenerating liver.
Authors: Jarmila D W van der Bilt; Onno Kranenburg; Maarten W Nijkamp; Niels Smakman; Liesbeth M Veenendaal; Elisabeth A Te Velde; Emile E Voest; Paul J van Diest; Inne H M Borel Rinkes Journal: Hepatology Date: 2005-07 Impact factor: 17.425
Authors: M W Nijkamp; J D W van der Bilt; N Snoeren; F J H Hoogwater; W J van Houdt; I Q Molenaar; O Kranenburg; R van Hillegersberg; I H M Borel Rinkes Journal: Eur J Surg Oncol Date: 2009-11-18 Impact factor: 4.424
Authors: Ulrich Linnemann; Christoph C Schimanski; Christoph Gebhardt; Martin R Berger Journal: Int J Colorectal Dis Date: 2003-11-21 Impact factor: 2.571
Authors: Ian B Nicoud; Christopher M Jones; Janene M Pierce; T Mark Earl; Lynn M Matrisian; Ravi S Chari; D Lee Gorden Journal: Cancer Res Date: 2007-03-15 Impact factor: 12.701
Authors: Kristy Hamilton; Erik M Wolfswinkel; William M Weathers; Amy S Xue; Daniel A Hatef; Shayan Izaddoost; Larry H Hollier Journal: Craniomaxillofac Trauma Reconstr Date: 2014-02-21