Abstract:
BACKGROUND:After an ischemia time of 1 h during aortic aneurysm surgery, muscle glutathione redox-status is not altered, indicating that this ischemic insult is well within the scavenging capacity of muscle glutathione, the most important endogenous scavenger. In the present study, the impact of elective aorto-bifemoral bypass surgery, involving a longer ischemia time, on muscle glutathione and its redox-status was investigated. METHODS:Leg muscle biopsies were obtained pre-operatively, at maximal ischemia, after 10 min and 24 h of reperfusion from 12 patients undergoing aorto-bifemoral bypass surgery. Muscle glutathione, free amino acids and energy-rich compounds were determined. RESULTS:Clamping times were 113 (99-120 min); median (quartiles). At maximal ischemia, muscle lactate increased by 7.5 (4.0-10.7) mmol/kg dry weight (dw) (P < 0.001) and phosphocreatine (PCr) decreased by 14.6 (8.9-23.3) mmol/kg dw (P < 0.001). At maximal ischemia, reduced glutathione (GSH) was unaltered but muscle glutamate decreased by 0.51 (0.30-0.85) mmol/kg wet weight (ww) (P < 0.001). At 24 h post-operatively, the reduced glutathione decreased by 0.47 (0.34-0.65) mmol/kg (ww) (P < 0.001) without changes in oxidized glutathione (GSSG) or in glutathione redox-status. Cysteine and glycine, the two other constituent amino acids to glutathione, did not change during the study period. CONCLUSION:Ischemia of 2 h during aorto-bifemoral bypass was associated with changes in muscle energy-rich compounds but without any changes in glutathione redox-status. A decreased antioxidative capacity, as reflected by a decrease in muscle glutathione concentrations, was seen 24 h post-operatively, still without changes in glutathione redox-status. This is not different from the changes seen after abdominal surgery not involving ischemia-reperfusion.
journal_name
Acta Anaesthesiol Scandjournal_title
Acta anaesthesiologica Scandinavicaauthors
Westman B,Johansson G,Söderlund K,Wernerman J,Hammarqvist Fdoi
10.1111/j.1399-6576.2006.01021.xsubject
Has Abstractpub_date
2006-07-01 00:00:00pages
699-705issue
6eissn
0001-5172issn
1399-6576journal_volume
50pub_type
杂志文章abstract::Changes in central and coronary haemodynamics and myocardial oxygenation during anaesthesia induction, intubation, skin incision and sternotomy were studied in 24 patients undergoing a coronary artery bypass grafting operation under either high-dose fentanyl or enflurane anaesthesia. The anaesthesia induction caused n...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1985.tb02234.x
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journal_title:Acta anaesthesiologica Scandinavica
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journal_title:Acta anaesthesiologica Scandinavica
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1998.tb05307.x
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journal_title:Acta anaesthesiologica Scandinavica
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journal_title:Acta anaesthesiologica Scandinavica
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doi:10.1111/j.1399-6576.2009.02017.x
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1995-01-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
doi:10.1111/j.1399-6576.1997.tb04781.x
更新日期:1997-06-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1998-03-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1993.tb03721.x
更新日期:1993-04-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1998-01-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1993.tb03689.x
更新日期:1993-02-01 00:00:00
abstract::A large and important group of acid-base disturbances are the metabolic acidoses. In general, every type of metabolic acidosis can be treated with infusion of base when the underlying cause of the disturbances is removed. In our medical centers, the use of tris and bicarbonate is common. For a long time they were comp...
journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1982.tb01752.x
更新日期:1982-06-01 00:00:00
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journal_title:Acta anaesthesiologica Scandinavica
pub_type: 杂志文章
doi:10.1111/j.1399-6576.1996.tb05558.x
更新日期:1996-11-01 00:00:00