Differential effects of concomitant use of vitamins C and E on trophoblast apoptosis and autophagy between normoxia and hypoxia-reoxygenation

Concomitant supplementation of vitamins C and E during pregnancy has been reportedly associated with low birth weight, the premature rupture of membranes and fetal loss or perinatal death in women at risk for preeclampsia; however, the cause is unknown. We surmise that hypoxia-reoxygenation (HR) wit...

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Veröffentlicht in:PloS one 2010-08, Vol.5 (8), p.e12202
Hauptverfasser: Hung, Tai-Ho, Chen, Szu-Fu, Li, Meng-Jen, Yeh, Yi-Lin, Hsieh, T'sang-T'ang
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Chen, Szu-Fu
Li, Meng-Jen
Yeh, Yi-Lin
Hsieh, T'sang-T'ang
description Concomitant supplementation of vitamins C and E during pregnancy has been reportedly associated with low birth weight, the premature rupture of membranes and fetal loss or perinatal death in women at risk for preeclampsia; however, the cause is unknown. We surmise that hypoxia-reoxygenation (HR) within the intervillous space due to abnormal placentation is the mechanism and hypothesize that concomitant administration of aforementioned vitamin antioxidants detrimentally affects trophoblast cells during HR. Using villous explants, concomitant administration of 50 microM of vitamins C and E was observed to reduce apoptotic and autophagic changes in the trophoblast layer at normoxia (8% oxygen) but to cause more prominent apoptosis and autophagy during HR. Furthermore, increased levels of Bcl-2 and Bcl-xL in association with a decrease in the autophagy-related protein LC3-II were noted in cytotrophoblastic cells treated with vitamins C and E under standard culture conditions. In contrast, vitamin treatment decreased Bcl-2 and Bcl-xL as well as increased mitochondrial Bak and cytosolic LC3-II in cytotrophoblasts subjected to HR. Our results indicate that concomitant administration of vitamins C and E has differential effects on the changes of apoptosis, autophagy and the expression of Bcl-2 family of proteins in the trophoblasts between normoxia and HR. These changes may probably lead to the impairment of placental function and suboptimal growth of the fetus.
doi_str_mv 10.1371/journal.pone.0012202
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drug effects</subject><subject>Cytosol - metabolism</subject><subject>Drug Synergism</subject><subject>Enzymes</subject><subject>Explants</subject><subject>Female</subject><subject>Fetuses</subject><subject>Growth factors</subject><subject>Gynecology</subject><subject>Humans</subject><subject>Hypoxia</subject><subject>Infant mortality</subject><subject>Kinases</subject><subject>Low birth weight</subject><subject>Membrane Proteins - metabolism</subject><subject>Membranes</subject><subject>Microtubule-Associated Proteins - metabolism</subject><subject>Mitochondria</subject><subject>Mitochondria - drug effects</subject><subject>Mitochondria - metabolism</subject><subject>Obstetrics</subject><subject>Obstetrics/Hypertensive Disorders</subject><subject>Obstetrics/Management of High-Risk Pregnancies</subject><subject>Obstetrics/Pregnancy</subject><subject>Oxidative stress</subject><subject>Oxygen</subject><subject>Oxygen - metabolism</subject><subject>Phagocytosis</subject><subject>Phosphorylation</subject><subject>Placenta</subject><subject>Pre-eclampsia</subject><subject>Preeclampsia</subject><subject>Pregnancy</subject><subject>Proteins</subject><subject>Proto-Oncogene Proteins c-bcl-2 - genetics</subject><subject>Proto-Oncogene Proteins c-bcl-2 - metabolism</subject><subject>Supplementation</subject><subject>Supplements</subject><subject>Transcription, Genetic - drug effects</subject><subject>Trophoblasts</subject><subject>Trophoblasts - cytology</subject><subject>Trophoblasts - drug effects</subject><subject>Trophoblasts - metabolism</subject><subject>Vitamin C</subject><subject>Vitamin E - pharmacology</subject><subject>Vitamins</subject><issn>1932-6203</issn><issn>1932-6203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><sourceid>DOA</sourceid><recordid>eNqNk12L1DAUhoso7rr6D0QDguDFjPno542wjKsOLCz4dRvS5mQmQ5t0k3Sd-RH-ZzMz3WUKCtKLnpzznLfJ25wkeUnwnLCCvN_YwRnRzntrYI4xoRTTR8k5qRid5RSzxyfxWfLM-w3GGSvz_GlyRnGJyyrNz5PfH7VS4MAELVoEMW6CR1ahxprGdjoIE9DgYZ-6i6tOG48WSBiJrpA1KDjbr23dCh-Q6G0frNf-UBZDiCWx2qEawi8Ag4x1nd1qcSivd_0-njmw290KjAjamufJEyVaDy_G90Xy49PV98WX2fXN5-Xi8nrWFFkRZhIK0oAURZXWJFO0VLSSBBqMc1kyksbTQSqIYFnWxBMVNc6xYIWUFINUTLKL5PVRt2-t56OTnhNGyoqlVYYjsTwS0ooN753uhNtxKzQ_JKxbceGCblrgoHJS1TiVZcbSTEH0tcwLVecZISWkELU-jF8b6g5kE812op2ITitGr_nK3nFaUcqKMgq8GQWcvR3Ah39seaRWIu5KG2WjWNNp3_DLtGBlkROcRmr-Fyo-EjodfzooHfOThneThsgE2IaVGLzny29f_5-9-Tll356waxBtWHvbDvt74KdgegQbZ713oB6cI5jvR-HeDb4fBT6OQmx7der6Q9P93Wd_AMa3Bzg</recordid><startdate>20100816</startdate><enddate>20100816</enddate><creator>Hung, Tai-Ho</creator><creator>Chen, Szu-Fu</creator><creator>Li, Meng-Jen</creator><creator>Yeh, Yi-Lin</creator><creator>Hsieh, T'sang-T'ang</creator><general>Public Library of Science</general><general>Public Library of Science (PLoS)</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>IOV</scope><scope>ISR</scope><scope>3V.</scope><scope>7QG</scope><scope>7QL</scope><scope>7QO</scope><scope>7RV</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7TG</scope><scope>7TM</scope><scope>7U9</scope><scope>7X2</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8AO</scope><scope>8C1</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>C1K</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>FR3</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>H94</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>KB.</scope><scope>KB0</scope><scope>KL.</scope><scope>L6V</scope><scope>LK8</scope><scope>M0K</scope><scope>M0S</scope><scope>M1P</scope><scope>M7N</scope><scope>M7P</scope><scope>M7S</scope><scope>NAPCQ</scope><scope>P5Z</scope><scope>P62</scope><scope>P64</scope><scope>PATMY</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>RC3</scope><scope>5PM</scope><scope>DOA</scope></search><sort><creationdate>20100816</creationdate><title>Differential effects of concomitant use of vitamins C and E on trophoblast apoptosis and autophagy between normoxia and hypoxia-reoxygenation</title><author>Hung, Tai-Ho ; Chen, Szu-Fu ; Li, Meng-Jen ; Yeh, Yi-Lin ; Hsieh, T'sang-T'ang</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c757t-de71ceda794b15f28f29d1ec006d8314080e4a1a355cffe7b060a37dd20edf3d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Analysis</topic><topic>Antioxidants</topic><topic>Antioxidants (Nutrients)</topic><topic>Apoptosis</topic><topic>Apoptosis - drug effects</topic><topic>Apoptosis Regulatory Proteins - metabolism</topic><topic>Ascorbic Acid - pharmacology</topic><topic>Autophagy</topic><topic>Autophagy - drug effects</topic><topic>bcl-2 Homologous Antagonist-Killer Protein - genetics</topic><topic>bcl-2 Homologous Antagonist-Killer Protein - metabolism</topic><topic>Bcl-2 protein</topic><topic>Bcl-x protein</topic><topic>bcl-X Protein - genetics</topic><topic>bcl-X Protein - metabolism</topic><topic>Beclin-1</topic><topic>Birth weight</topic><topic>Cell culture</topic><topic>Cell death</topic><topic>Cell Hypoxia</topic><topic>Chorionic Villi - drug effects</topic><topic>Chorionic Villi - metabolism</topic><topic>Clinical trials</topic><topic>Clinical Trials as Topic</topic><topic>Cytokines</topic><topic>Cytosol - drug effects</topic><topic>Cytosol - metabolism</topic><topic>Drug Synergism</topic><topic>Enzymes</topic><topic>Explants</topic><topic>Female</topic><topic>Fetuses</topic><topic>Growth factors</topic><topic>Gynecology</topic><topic>Humans</topic><topic>Hypoxia</topic><topic>Infant mortality</topic><topic>Kinases</topic><topic>Low birth weight</topic><topic>Membrane Proteins - 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We surmise that hypoxia-reoxygenation (HR) within the intervillous space due to abnormal placentation is the mechanism and hypothesize that concomitant administration of aforementioned vitamin antioxidants detrimentally affects trophoblast cells during HR. Using villous explants, concomitant administration of 50 microM of vitamins C and E was observed to reduce apoptotic and autophagic changes in the trophoblast layer at normoxia (8% oxygen) but to cause more prominent apoptosis and autophagy during HR. Furthermore, increased levels of Bcl-2 and Bcl-xL in association with a decrease in the autophagy-related protein LC3-II were noted in cytotrophoblastic cells treated with vitamins C and E under standard culture conditions. In contrast, vitamin treatment decreased Bcl-2 and Bcl-xL as well as increased mitochondrial Bak and cytosolic LC3-II in cytotrophoblasts subjected to HR. Our results indicate that concomitant administration of vitamins C and E has differential effects on the changes of apoptosis, autophagy and the expression of Bcl-2 family of proteins in the trophoblasts between normoxia and HR. These changes may probably lead to the impairment of placental function and suboptimal growth of the fetus.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>20808946</pmid><doi>10.1371/journal.pone.0012202</doi><tpages>e12202</tpages><oa>free_for_read</oa></addata></record>
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subjects Analysis
Antioxidants
Antioxidants (Nutrients)
Apoptosis
Apoptosis - drug effects
Apoptosis Regulatory Proteins - metabolism
Ascorbic Acid - pharmacology
Autophagy
Autophagy - drug effects
bcl-2 Homologous Antagonist-Killer Protein - genetics
bcl-2 Homologous Antagonist-Killer Protein - metabolism
Bcl-2 protein
Bcl-x protein
bcl-X Protein - genetics
bcl-X Protein - metabolism
Beclin-1
Birth weight
Cell culture
Cell death
Cell Hypoxia
Chorionic Villi - drug effects
Chorionic Villi - metabolism
Clinical trials
Clinical Trials as Topic
Cytokines
Cytosol - drug effects
Cytosol - metabolism
Drug Synergism
Enzymes
Explants
Female
Fetuses
Growth factors
Gynecology
Humans
Hypoxia
Infant mortality
Kinases
Low birth weight
Membrane Proteins - metabolism
Membranes
Microtubule-Associated Proteins - metabolism
Mitochondria
Mitochondria - drug effects
Mitochondria - metabolism
Obstetrics
Obstetrics/Hypertensive Disorders
Obstetrics/Management of High-Risk Pregnancies
Obstetrics/Pregnancy
Oxidative stress
Oxygen
Oxygen - metabolism
Phagocytosis
Phosphorylation
Placenta
Pre-eclampsia
Preeclampsia
Pregnancy
Proteins
Proto-Oncogene Proteins c-bcl-2 - genetics
Proto-Oncogene Proteins c-bcl-2 - metabolism
Supplementation
Supplements
Transcription, Genetic - drug effects
Trophoblasts
Trophoblasts - cytology
Trophoblasts - drug effects
Trophoblasts - metabolism
Vitamin C
Vitamin E - pharmacology
Vitamins
title Differential effects of concomitant use of vitamins C and E on trophoblast apoptosis and autophagy between normoxia and hypoxia-reoxygenation
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