Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers
Objectives: This study assessed the role of oxidative stress in parturition in Omani mothers following growing reports that late preterm neonates were at greater risk than term neonates of perinatal death. Methods: Venous blood samples were collected during labour, and cord (neonatal) blood samples...
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| Format: | Article |
| Language: | English |
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Sultan Qaboos University
2012-08-01
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| Series: | Sultan Qaboos University Medical Journal |
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| Online Access: | https://journals.squ.edu.om/index.php/squmj/article/view/1690 |
| _version_ | 1811282371604905984 |
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| author | Clifford Abiaka Lovina Machado |
| author_facet | Clifford Abiaka Lovina Machado |
| author_sort | Clifford Abiaka |
| collection | DOAJ |
| description | Objectives: This study assessed the role of oxidative stress in parturition in Omani mothers following growing reports that late preterm neonates were at greater risk than term neonates of perinatal death. Methods: Venous blood samples were collected during labour, and cord (neonatal) blood samples were taken after childbirth in late preterm and term from women at Sultan Qaboos University Hospital, Oman. Plasma nitric oxide (NO) concentrations, erythrocyte catalase (CAT). Erythrocyte glutathione peroxidase (GPx) activities were measured using spectrophotometric Methods. Results: When compared with term mothers, late preterm mothers had markedly higher NO concentrations (μmol/L) 17.1 ± 3.3 versus 11.0 ± 5.5 (P <0.0001), and lower GPx values (U/g Hb) 94.1 ± 12.9 versus 110.4 ± 12.3 (P <0.0001). Late preterm mothers were significantly younger (P = 0.027) than term mothers and had neonates that weighed significantly less (P <0.0001) than term neonates. GPx activity was significantly reduced (P = 0.001) in late preterm neonates as compared to term neonates. CAT showed no change in activity in any comparison. Conclusion: Distinctly higher values of NO and lower GPx activity were found in late preterm mothers relative to term mothers; also, lower GPx in late preterm neonates relative to term neonates suggested a pro-oxidant-antioxidant imbalance due to the greater oxidative burden in late preterm parturition. |
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| format | Article |
| id | doaj.art-1a9ceec80e7347a5aaa2c0e99ee334da |
| institution | Directory Open Access Journal |
| issn | 2075-051X 2075-0528 |
| language | English |
| last_indexed | 2024-04-13T01:51:24Z |
| publishDate | 2012-08-01 |
| publisher | Sultan Qaboos University |
| record_format | Article |
| series | Sultan Qaboos University Medical Journal |
| spelling | doaj.art-1a9ceec80e7347a5aaa2c0e99ee334da2022-12-22T03:07:52ZengSultan Qaboos UniversitySultan Qaboos University Medical Journal2075-051X2075-05282012-08-011233003051615Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani MothersClifford Abiaka0Lovina Machado1Department of Biochemistry, College of Medicine & Health Sciences, Sultan Qaboos University, Muscat, OmanDepartment of Obstetrics & Gynaecology, Sultan Qaboos University Hospital, Muscat, OmanObjectives: This study assessed the role of oxidative stress in parturition in Omani mothers following growing reports that late preterm neonates were at greater risk than term neonates of perinatal death. Methods: Venous blood samples were collected during labour, and cord (neonatal) blood samples were taken after childbirth in late preterm and term from women at Sultan Qaboos University Hospital, Oman. Plasma nitric oxide (NO) concentrations, erythrocyte catalase (CAT). Erythrocyte glutathione peroxidase (GPx) activities were measured using spectrophotometric Methods. Results: When compared with term mothers, late preterm mothers had markedly higher NO concentrations (μmol/L) 17.1 ± 3.3 versus 11.0 ± 5.5 (P <0.0001), and lower GPx values (U/g Hb) 94.1 ± 12.9 versus 110.4 ± 12.3 (P <0.0001). Late preterm mothers were significantly younger (P = 0.027) than term mothers and had neonates that weighed significantly less (P <0.0001) than term neonates. GPx activity was significantly reduced (P = 0.001) in late preterm neonates as compared to term neonates. CAT showed no change in activity in any comparison. Conclusion: Distinctly higher values of NO and lower GPx activity were found in late preterm mothers relative to term mothers; also, lower GPx in late preterm neonates relative to term neonates suggested a pro-oxidant-antioxidant imbalance due to the greater oxidative burden in late preterm parturition.https://journals.squ.edu.om/index.php/squmj/article/view/1690nitric oxidecatalaseglutathione peroxidaselate preterm birthterm birthneonatesoxidative stressoman. |
| spellingShingle | Clifford Abiaka Lovina Machado Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers Sultan Qaboos University Medical Journal nitric oxide catalase glutathione peroxidase late preterm birth term birth neonates oxidative stress oman. |
| title | Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers |
| title_full | Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers |
| title_fullStr | Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers |
| title_full_unstemmed | Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers |
| title_short | Nitric Oxide and Antioxidant Enzymes in Venous and Cord Blood of Late Preterm and Term Omani Mothers |
| title_sort | nitric oxide and antioxidant enzymes in venous and cord blood of late preterm and term omani mothers |
| topic | nitric oxide catalase glutathione peroxidase late preterm birth term birth neonates oxidative stress oman. |
| url | https://journals.squ.edu.om/index.php/squmj/article/view/1690 |
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