Otchere Addai-Mensah, Edward Y Afriyie, Samuel Asamoah Sakyi, Christian Obirikorang, Max Efui Annani-Akollor, Eddie-Williams Owiredu, Francis A Amponsah, Richard Vikpebah Duneeh, Evans Asamoah Adu
{"title":"胎儿恒河猴D基因分型和胎儿D阴性胎儿血浆性别测定:传统聚合酶链反应在资源有限环境下的实用性。","authors":"Otchere Addai-Mensah, Edward Y Afriyie, Samuel Asamoah Sakyi, Christian Obirikorang, Max Efui Annani-Akollor, Eddie-Williams Owiredu, Francis A Amponsah, Richard Vikpebah Duneeh, Evans Asamoah Adu","doi":"10.1155/2020/4913793","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>This prospective cohort study evaluated the usefulness of conventional PCR in genotyping fetal Rhesus D (RhD) and sex from the maternal plasma of RhD-negative (RhD-) antenatal population in resource-limited settings.</p><p><strong>Methods: </strong>Thirty apparently healthy RhD- pregnant women with RhD positive (RhD+) partners were included. Blood samples were collected from each participant (in the third trimester of pregnancy) for DNA extraction/purification and fetal RhD genotyping.</p><p><strong>Results: </strong>Out of the 30 samples, 26 (86.7%) were found to be RhD+ while 4 (13.3%) were RhD-. The RhD+ comprised 24 (80.0%) RhD+ based on exons 5, 7, and 10 combined. Exons 5 and 7 were detected in two additional samples but not exon 10. Serological phenotyping of neonatal blood confirmed 26 RhD+ and 4 RhD-. There was a perfect agreement between the fetal RhD genotype and neonatal RhD phenotyping after delivery for exons 5 and 7 (concordance = 100%, <i>κ</i> = 100.0%, diagnostic accuracy = 100%, <i>p</i> < 0.0001) while exon 10 presented with an almost perfect agreement (concordance = 93.3%, <i>κ</i> = 76.2%, diagnostic accuracy = 93.3%, <i>p</i> < 0.0001). Regarding the prenatal test for the SRY gene, 9 (30.0%) were predicted to be males and the remaining 21 (60.0%) were females. All the 9 and 21 anticipated males and females, respectively, were confirmed after delivery (concordance = 100%, <i>κ</i> = 100.0%, diagnostic accuracy = 100%).</p><p><strong>Conclusion: </strong>Our study suggests that conventional PCR using the SRY, RhD exons 5 and 7 could be useful for predicting fetal sex and RhD from maternal peripheral blood in resource-limited settings.</p>","PeriodicalId":19439,"journal":{"name":"Obstetrics and Gynecology International","volume":"2020 ","pages":"4913793"},"PeriodicalIF":1.6000,"publicationDate":"2020-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1155/2020/4913793","citationCount":"0","resultStr":"{\"title\":\"Fetal Rhesus D Genotyping and Sex Determination from Maternal Plasma of Rhesus D-Negative Antenatal Population: The Usefulness of Conventional Polymerase Chain Reaction in Resource-limited Settings.\",\"authors\":\"Otchere Addai-Mensah, Edward Y Afriyie, Samuel Asamoah Sakyi, Christian Obirikorang, Max Efui Annani-Akollor, Eddie-Williams Owiredu, Francis A Amponsah, Richard Vikpebah Duneeh, Evans Asamoah Adu\",\"doi\":\"10.1155/2020/4913793\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>This prospective cohort study evaluated the usefulness of conventional PCR in genotyping fetal Rhesus D (RhD) and sex from the maternal plasma of RhD-negative (RhD-) antenatal population in resource-limited settings.</p><p><strong>Methods: </strong>Thirty apparently healthy RhD- pregnant women with RhD positive (RhD+) partners were included. Blood samples were collected from each participant (in the third trimester of pregnancy) for DNA extraction/purification and fetal RhD genotyping.</p><p><strong>Results: </strong>Out of the 30 samples, 26 (86.7%) were found to be RhD+ while 4 (13.3%) were RhD-. The RhD+ comprised 24 (80.0%) RhD+ based on exons 5, 7, and 10 combined. Exons 5 and 7 were detected in two additional samples but not exon 10. Serological phenotyping of neonatal blood confirmed 26 RhD+ and 4 RhD-. There was a perfect agreement between the fetal RhD genotype and neonatal RhD phenotyping after delivery for exons 5 and 7 (concordance = 100%, <i>κ</i> = 100.0%, diagnostic accuracy = 100%, <i>p</i> < 0.0001) while exon 10 presented with an almost perfect agreement (concordance = 93.3%, <i>κ</i> = 76.2%, diagnostic accuracy = 93.3%, <i>p</i> < 0.0001). Regarding the prenatal test for the SRY gene, 9 (30.0%) were predicted to be males and the remaining 21 (60.0%) were females. All the 9 and 21 anticipated males and females, respectively, were confirmed after delivery (concordance = 100%, <i>κ</i> = 100.0%, diagnostic accuracy = 100%).</p><p><strong>Conclusion: </strong>Our study suggests that conventional PCR using the SRY, RhD exons 5 and 7 could be useful for predicting fetal sex and RhD from maternal peripheral blood in resource-limited settings.</p>\",\"PeriodicalId\":19439,\"journal\":{\"name\":\"Obstetrics and Gynecology International\",\"volume\":\"2020 \",\"pages\":\"4913793\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2020-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1155/2020/4913793\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Obstetrics and Gynecology International\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1155/2020/4913793\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2020/1/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q3\",\"JCRName\":\"OBSTETRICS & GYNECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Obstetrics and Gynecology International","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/2020/4913793","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2020/1/1 0:00:00","PubModel":"eCollection","JCR":"Q3","JCRName":"OBSTETRICS & GYNECOLOGY","Score":null,"Total":0}
Fetal Rhesus D Genotyping and Sex Determination from Maternal Plasma of Rhesus D-Negative Antenatal Population: The Usefulness of Conventional Polymerase Chain Reaction in Resource-limited Settings.
Background: This prospective cohort study evaluated the usefulness of conventional PCR in genotyping fetal Rhesus D (RhD) and sex from the maternal plasma of RhD-negative (RhD-) antenatal population in resource-limited settings.
Methods: Thirty apparently healthy RhD- pregnant women with RhD positive (RhD+) partners were included. Blood samples were collected from each participant (in the third trimester of pregnancy) for DNA extraction/purification and fetal RhD genotyping.
Results: Out of the 30 samples, 26 (86.7%) were found to be RhD+ while 4 (13.3%) were RhD-. The RhD+ comprised 24 (80.0%) RhD+ based on exons 5, 7, and 10 combined. Exons 5 and 7 were detected in two additional samples but not exon 10. Serological phenotyping of neonatal blood confirmed 26 RhD+ and 4 RhD-. There was a perfect agreement between the fetal RhD genotype and neonatal RhD phenotyping after delivery for exons 5 and 7 (concordance = 100%, κ = 100.0%, diagnostic accuracy = 100%, p < 0.0001) while exon 10 presented with an almost perfect agreement (concordance = 93.3%, κ = 76.2%, diagnostic accuracy = 93.3%, p < 0.0001). Regarding the prenatal test for the SRY gene, 9 (30.0%) were predicted to be males and the remaining 21 (60.0%) were females. All the 9 and 21 anticipated males and females, respectively, were confirmed after delivery (concordance = 100%, κ = 100.0%, diagnostic accuracy = 100%).
Conclusion: Our study suggests that conventional PCR using the SRY, RhD exons 5 and 7 could be useful for predicting fetal sex and RhD from maternal peripheral blood in resource-limited settings.
期刊介绍:
Obstetrics and Gynecology International is a peer-reviewed, Open Access journal that aims to provide a forum for scientists and clinical professionals working in obstetrics and gynecology. The journal publishes original research articles, review articles, and clinical studies related to obstetrics, maternal-fetal medicine, general gynecology, gynecologic oncology, uro-gynecology, reproductive medicine and infertility, reproductive endocrinology, and sexual medicine.