{"title":"抗坏血酸再灌注改善缺血后红细胞抗氧化能力的保存:大鼠后肢模型的比较研究","authors":"Y. Coban, E. Bulbuloglu, A. Polat, F. Inanç","doi":"10.5580/c56","DOIUrl":null,"url":null,"abstract":"Aim of the study: We aimed to measure lipid peroxidation and antioxidant enzymes in erythrocytes before and after ischemiareperfusion in a rat hindlimb model, and to compare the effects of reperfusion with Vitamin C and dexamethasone on the erythrocyte antioxidant capacity. Material and method: Thiobarbituric acid -reactive substances (TBARS), a measure of lipid peroxidation, Superoxide dismutase (SOD), Glutathion (GSH) and catalase (CAT) were determined in erythrocytes. Erythrocytes were prepared by classical washing method (0,9 %Nacl) from venous samples. A total of 42 rats were used in the study which were divided into 6 groups 7 rats in each as follows: control group or the sham-operated group, short ischemia-reperfusion, long ischemiareperfusion, short ischemia and reperfusion with ascorbic acid (AA), short ischemia and reperfusion with dexamethasone, the double extremity I-R with short duration groups. A non-traumatic vascular clamp (Acland, V3 vascular clamp) was placed accross the right iliac artery for 45 minutes in short ischemia and for 3 hours in long ischemia groups. Venous blood samples were taken to evaluate the Cat, SOD, GSH and TBARS levels in erythrocytes at the completion of reperfusion. Results: Elevated TBARS levels and decreased Cat, SOD and GSH levels in erythrocytes were seen after i-r of rat hindlimb (P<0.001). When compared with reperfusion with dexamethasone, AA had a more improved effect on antioxidant capacity of erythrocytes after ischemia of hindlimb in rats. Conclusions: Reperfusion with AA after ischemia resulted an improved antioxidant capacity preservation in erythrocytes. In clinical setting, addition of vitamin C to reperfusion solution may be benefical.","PeriodicalId":107168,"journal":{"name":"The Internet Journal of Alternative Medicine","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2004-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":"{\"title\":\"Improved Preservation Of Erythrocyte Antioxidant Capacity With Ascorbic Acid Reperfusion After Ischemia: A Comparative Study In A Rat Hindlimb Model\",\"authors\":\"Y. Coban, E. Bulbuloglu, A. Polat, F. Inanç\",\"doi\":\"10.5580/c56\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Aim of the study: We aimed to measure lipid peroxidation and antioxidant enzymes in erythrocytes before and after ischemiareperfusion in a rat hindlimb model, and to compare the effects of reperfusion with Vitamin C and dexamethasone on the erythrocyte antioxidant capacity. Material and method: Thiobarbituric acid -reactive substances (TBARS), a measure of lipid peroxidation, Superoxide dismutase (SOD), Glutathion (GSH) and catalase (CAT) were determined in erythrocytes. Erythrocytes were prepared by classical washing method (0,9 %Nacl) from venous samples. A total of 42 rats were used in the study which were divided into 6 groups 7 rats in each as follows: control group or the sham-operated group, short ischemia-reperfusion, long ischemiareperfusion, short ischemia and reperfusion with ascorbic acid (AA), short ischemia and reperfusion with dexamethasone, the double extremity I-R with short duration groups. A non-traumatic vascular clamp (Acland, V3 vascular clamp) was placed accross the right iliac artery for 45 minutes in short ischemia and for 3 hours in long ischemia groups. Venous blood samples were taken to evaluate the Cat, SOD, GSH and TBARS levels in erythrocytes at the completion of reperfusion. Results: Elevated TBARS levels and decreased Cat, SOD and GSH levels in erythrocytes were seen after i-r of rat hindlimb (P<0.001). When compared with reperfusion with dexamethasone, AA had a more improved effect on antioxidant capacity of erythrocytes after ischemia of hindlimb in rats. Conclusions: Reperfusion with AA after ischemia resulted an improved antioxidant capacity preservation in erythrocytes. In clinical setting, addition of vitamin C to reperfusion solution may be benefical.\",\"PeriodicalId\":107168,\"journal\":{\"name\":\"The Internet Journal of Alternative Medicine\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2004-12-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"8\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Internet Journal of Alternative Medicine\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5580/c56\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Internet Journal of Alternative Medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5580/c56","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Improved Preservation Of Erythrocyte Antioxidant Capacity With Ascorbic Acid Reperfusion After Ischemia: A Comparative Study In A Rat Hindlimb Model
Aim of the study: We aimed to measure lipid peroxidation and antioxidant enzymes in erythrocytes before and after ischemiareperfusion in a rat hindlimb model, and to compare the effects of reperfusion with Vitamin C and dexamethasone on the erythrocyte antioxidant capacity. Material and method: Thiobarbituric acid -reactive substances (TBARS), a measure of lipid peroxidation, Superoxide dismutase (SOD), Glutathion (GSH) and catalase (CAT) were determined in erythrocytes. Erythrocytes were prepared by classical washing method (0,9 %Nacl) from venous samples. A total of 42 rats were used in the study which were divided into 6 groups 7 rats in each as follows: control group or the sham-operated group, short ischemia-reperfusion, long ischemiareperfusion, short ischemia and reperfusion with ascorbic acid (AA), short ischemia and reperfusion with dexamethasone, the double extremity I-R with short duration groups. A non-traumatic vascular clamp (Acland, V3 vascular clamp) was placed accross the right iliac artery for 45 minutes in short ischemia and for 3 hours in long ischemia groups. Venous blood samples were taken to evaluate the Cat, SOD, GSH and TBARS levels in erythrocytes at the completion of reperfusion. Results: Elevated TBARS levels and decreased Cat, SOD and GSH levels in erythrocytes were seen after i-r of rat hindlimb (P<0.001). When compared with reperfusion with dexamethasone, AA had a more improved effect on antioxidant capacity of erythrocytes after ischemia of hindlimb in rats. Conclusions: Reperfusion with AA after ischemia resulted an improved antioxidant capacity preservation in erythrocytes. In clinical setting, addition of vitamin C to reperfusion solution may be benefical.