Anesthetic Management and Remote Reperfusion Injuries
Ključne riječi
Sažetak
Opis
Seven ml blood sample were taken from arterial line after stabilization of anesthesia (T1), 30 minutes after total CPB (T2), one hour after weaning from CPB (T3) and 24 hours after weaning from CPB (T4). One ml blood sample was immediately wrapped in aluminum foil and kept in ice to immediate measurements of MetHb, COHb and CL (ROS). CL assay was carried out within 2 hours of sampling. Six ml samples remained was placed into tubes containing ethylenediamine tetraacetic acid. Serum were separated ( at 2000rpm for 10 minutes) immediately after sampling and stored at -80℃ for TAS assay, cytokine measurements, malondialdehyde (MDA) determination, complements and leukocyte elastase measurements. Those assay and measurements were carried out within 4 weeks of surgery.
Measurements of hemoglobin (Hb), COHb and MetHb: Hb, COHb and MetHb were measured immediately with ABL520, Radiometer, Copenhagen, Denmark).
Measurement of Redox balance: 0.2ml of fresh drawn blood was used to measure ROS production by lucigenin Chemiluminescence (CL) (detecting superoxide mainly) and luminal CL (detecting H2O2 and HOCl mainly) as previous study.The total antioxidant status in 20 uL of plasma was measured with a total antioxidant status (TAS) kit ( TAS CAL, Randox). Hemodilution effects with CPB, TAS levels at T2 were corrected with the hematocrits. Lipid peroxidation was determined by the thiobarbiturate reaction measuring the formation of MDA in plasma by TBARS assay kit (Cayman chemical co. USA) Cytokines analysis: Inflammatory cytokines were analysis with RayBio human inflammation antibody array 3 according to the manufacturer's instruction. (Cat# AAH-INF-3, RayBiotech Inc. Norcross, GA, USA).29 Measurements of complement activation and leukocytes activation: Complement Component 3a (C3a), C5a, and Human Terminal Complement Complex C5b-9 (C5b-9) were measured with human C3a EIA kit, human C5a EIA kit, Human Terminal Complement Complex C5b-9 kit, Life Science Inc.). Leukocyte elastase were measured by Elisa kit for Human Elastase 2,Neutrophil(NE, Life Science Inc.)
Datumi
Posljednja provjera: | 05/31/2011 |
Prvo podneseno: | 08/30/2008 |
Predviđena prijava poslana: | 08/30/2008 |
Prvo objavljeno: | 09/02/2008 |
Posljednje ažuriranje poslano: | 10/12/2011 |
Posljednje ažuriranje objavljeno: | 10/16/2011 |
Stvarni datum početka studija: | 07/31/2008 |
Procijenjeni datum primarnog završetka: | 10/31/2010 |
Procijenjeni datum završetka studije: | 11/30/2010 |
Stanje ili bolest
Intervencija / liječenje
Other: 1
Faza
Grupe ruku
Ruka | Intervencija / liječenje |
---|---|
1 sequential changes before and after cardiopulmonary bypass including ROS, antioxidant status, leukocyte elastase, complements, inflammatory cytokines | Other: 1 sequential changes of oxidative injuries before and after cardiopulmonary bypass |
Kriterij prihvatljivosti
Dobni uvjeti za studiranje | 20 Years Do 20 Years |
Spolovi koji ispunjavaju uvjete za studij | All |
Metoda uzorkovanja | Non-Probability Sample |
Prihvaća zdrave volontere | Da |
Kriteriji | Inclusion Criteria: - age > 20 y/0, need cardiopulmonary bypass Exclusion Criteria: - severe anemia, hematologic diseases, hormone therapy, previous valvular surgery, blood transfusion in recent 3 months |