Accumulation of advanced glycation end products in women with preeclampsia: possible involvement of placental oxidative and nitrative stress
| Autor: | Lin Hao, Aiko Sasaki, Soichi Noguchi, Chebib Chekir, Yuji Hiramatsu, Mikiya Nakatsuka, Yasuhiko Kamada, Hideki Konishi |
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| Rok vydání: | 2004 |
| Předmět: |
Adult
Glycation End Products Advanced medicine.medical_specialty Placenta Receptor for Advanced Glycation End Products medicine.disease_cause RAGE (receptor) Preeclampsia chemistry.chemical_compound Pre-Eclampsia Glycation Pregnancy Internal medicine medicine Humans Receptors Immunologic reproductive and urinary physiology Aldehydes business.industry Nitrotyrosine Obstetrics and Gynecology Deoxyguanosine DNA medicine.disease Lipid Metabolism Immunohistochemistry Reactive Nitrogen Species Blot Oxidative Stress medicine.anatomical_structure Endocrinology Reproductive Medicine chemistry 8-Hydroxy-2'-Deoxyguanosine embryonic structures Advanced glycation end-product Tyrosine Female business Oxidative stress Biomarkers Developmental Biology |
| Zdroj: | Placenta. 27(2-3) |
| ISSN: | 0143-4004 |
| Popis: | Advanced glycation end products (AGEs) are known to cause oxidative damage in various cells by binding with its receptor, RAGE. We measured the serum level of AGEs and examined the AGEs, RAGE, and the other biomarkers of oxidative stress in the placentas from preeclamptic women. Competitive ELISA was carried out to measure the AGEs in serum. Western blotting was performed to analyze AGEs and RAGE in the placenta. Immunohistochemical analyses were performed to examine the localization of AGEs, RAGE, and other biomarkers of oxidative stress in the placenta. The mean level of serum AGEs in preeclamptic women was significantly higher than that in healthy non-pregnant women or healthy pregnant women. Western blotting revealed that the level of AGEs or RAGE in preeclamptic placenta was significantly higher than that in normal placenta. Immunohistochemical analyses showed that levels of nitrotyrosine and nitroguanosine, which are formed by reactive nitrogen species, in preeclamptic placenta were higher than those in normal placenta. Accumulation of 4-hydroxy-2-nonenal and 8-hydroxy-2'-deoxyguanosine indicated enhanced oxidative modifications of lipids and DNA in preeclamptic placenta. The AGE-RAGE system, which is upregulated in preeclampsia, is likely to be involved in the oxidative stress of preeclampsia. |
| Databáze: | OpenAIRE |
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