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Reappraisal of evolving methods in non-invasive prenatal screening: Discovery, biology and clinical utility. Heliyon 2023; 9:e13923. [PMID: 36879971 PMCID: PMC9984859 DOI: 10.1016/j.heliyon.2023.e13923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 01/16/2023] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
Non-invasive prenatal screening (NIPS) offers an opportunity to screen or determine features associated with the fetus. Earlier, prenatal testing was done with cytogenetic procedures like karyotyping or fluorescence in-situ hybridization, which necessitated invasive methods such as fetal blood sampling, chorionic villus sampling or amniocentesis. Over the last two decades, there has been a paradigm shift away from invasive prenatal diagnostic methods to non-invasive ones. NIPS tests heavily rely on cell-free fetal DNA (cffDNA). This DNA is released into the maternal circulation by placenta. Like cffDNA, fetal cells such as nucleated red blood cells, placental trophoblasts, leukocytes, and exosomes or fetal RNA circulating in maternal plasma, have enormous potential in non-invasive prenatal testing, but their use is still limited due to a number of limitations. Non-invasive approaches currently use circulating fetal DNA to assess the fetal genetic milieu. Methods with an acceptable detection rate and specificity such as sequencing, methylation, or PCR, have recently gained popularity in NIPS. Now that NIPS has established clinical significance in prenatal screening and diagnosis, it is critical to gain insights into and comprehend the genesis of NIPS de novo. The current review reappraises the development and emergence of non-invasive prenatal screen/test approaches, as well as their clinical application, with a focus, on the scope, benefits, and limitations.
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Nemescu D, Constantinescu D, Gorduza V, Carauleanu A, Caba L, Navolan DB. Comparison between paramagnetic and CD71 magnetic activated cell sorting of fetal nucleated red blood cells from the maternal blood. J Clin Lab Anal 2020; 34:e23420. [PMID: 32588489 PMCID: PMC7521243 DOI: 10.1002/jcla.23420] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 04/29/2020] [Accepted: 05/18/2020] [Indexed: 11/28/2022] Open
Abstract
Background Fetal nucleated red blood cells (NRBC) from maternal circulation are rare events but can be enriched and used to evaluate the genetics of the fetus. We compared two simplified selection methods of the fetal cells from the maternal blood. Methods We isolated fetal cells from maternal blood through double‐density gradient centrifugation followed either by magnetic cell selection, based on the paramagnetic proprieties of the NRBC hemoglobin, converted to methemoglobin, or by a positive magnetic‐activated cell sorting (MACS) enrichment, using anti‐CD71 monoclonal antibodies. Finally, the cells were identified through fluorescence in situ hybridization (FISH) with specific chromosome X and Y probes. Results We processed 10 mL of peripheral blood samples from 27 pregnant women with singleton normal male fetuses. Hemoglobin‐based enrichment isolated significantly more NRBCs: 29.7 × 104 cells than anti‐CD71 MACS: 10.1 × 104 cells (P < .001). The FISH analysis found at least one XY cell in 81.5% and 61.5% of cases, respectively, for paramagnetic and anti‐CD71 selection. Also, the average number of XY cells identified through paramagnetic selection was 5.09 ± 2.5, significantly higher than those observed through CD71 sorting: 3.38 ± 1.7 cells (average ± SE) (P = .03). Conclusion The combination of density gradient centrifugation with paramagnetic selection has the advantage of simplicity and achieves a minimal manipulation and treatment of cells. It yields an increased number of NRBCs and FISH confirmed fetal cells, compared to the anti‐CD71 sorting.
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Affiliation(s)
- Dragos Nemescu
- Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | | | - Vlad Gorduza
- Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
| | | | - Lavinia Caba
- Grigore T Popa University of Medicine and Pharmacy, Iasi, Romania
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Investigating Pregnancy Outcomes After Abnormal Cell-Free DNA Test Results. J Genet Couns 2018; 27:902-908. [DOI: 10.1007/s10897-018-0219-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Accepted: 01/16/2018] [Indexed: 10/18/2022]
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Saraswathy S, Sahai K, Yadav TP, Arora D, Mendiratta SL, Naqvi SH, Biswas S, Krishnan M, Abraham KM. Evaluation of fetal hypermethylated RASSF1A in pre-eclampsia and its relationship with placental protein-13, pregnancy associated plasma protein-A and urine protein. Pregnancy Hypertens 2016; 6:306-312. [PMID: 27939474 DOI: 10.1016/j.preghy.2016.06.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Cell free fetal DNA (cffDNA) and its hypermethylated RASSF1A gene signify a recent advancement in non-invasive prenatal diagnosis of feto-placental anomalies like pre-eclampsia. The study uses hypermethylated RASSF1A gene to quantify cffDNA and to assess its relationship with placental and urine proteins in pre-eclampsia cases. DESIGN AND METHODS DNA was isolated from plasma samples of clinically diagnosed cases of pre-eclampsia (n=103) and normal pregnancy (n=616) from 21weeks of gestation. Through methylation sensitive enzyme (BstUI) digestion; followed by real time-polymerase chain reaction (RT-PCR), quantification of hypermethylated RASSF1A was done. Immunoassays determined: placental protein-13 (pp-13) and pregnancy associated plasma protein A (PAPP-A) and pyrogallol red molybdate assay for 24h urine protein. RESULTS Highly significant differences between control and pre-eclampsia cases for hypermethylated RASSF1A concentrations were found; Group I: 33±7.35 vs 74.46±16.71, Group II: 53.75±16.65 vs 244.22±35.68, Group III: 93.25±19.08 vs 412.31±80.18, Group IV: 144.30±18.13 vs 1056.89±153.78, Group V: 307.55±40.76 vs 2763.76±259.76copies/ml. Multivariate Pearson's correlation analysis of hypermethylated RASSF1A with pp-13, PAPP-A and urine proteins showed positive and very highly significant (P<0.001) associations. CONCLUSIONS Diagnostic potential of fetal specific, hypermethylated RASSF1A was evaluated. Its positive relationship with placental and urine proteins submit the case for considering it as a reliable marker for pre-eclampsia.
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Affiliation(s)
- Seema Saraswathy
- Base Hospital, Delhi Cantt, School of Medicine & Paramedical Health Sciences, Guru Gobind Singh Indraprastha University, Delhi, India.
| | - Kavita Sahai
- Department of Pathology, Armed Forces Medical College (AFMC), Pune, India
| | | | - Devendra Arora
- Dept of Obstetrics and Gynaecology, Base Hospital and Army College of Medical Sciences (ACMS), Delhi Cantt, India
| | | | | | - Shilpie Biswas
- Department of Biosciences, Jamia Millia Islamia, Delhi, India
| | - Manu Krishnan
- Institute of Nuclear Medicine & Allied Sciences (INMAS), Defence Research & Development Organization (DRDO), Ministry of Defence, Govt of India, Delhi, India
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Saraswathy S, Sahai K, Arora D, Krishnan M, Mendiratta SL, Biswas S, Abraham KM. Fetal-specific hypermethylated RASSF1A quantification in pregnancy. J Matern Fetal Neonatal Med 2016; 30:849-853. [PMID: 27165812 DOI: 10.1080/14767058.2016.1188917] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE To quantify cell free fetal DNA (cffDNA) with fetal specific epigenetic marker, hypermethylated RASSF1A, in maternal plasma of normal pregnant women from 20 weeks of gestation and to assess its relationship with maternal age, height, pre-pregnancy weight and body mass index (BMI). METHODS Hundred normal pregnant women within the gestational age of 21-40 weeks were randomly selected and grouped into five (n = 20). Group 1: 21-24, Group 2: 25-28, Group 3: 29-32, Group 4: 33-36 and Group 5: 37-40 weeks. Maternal plasma DNA was extracted, digested with methylation-sensitive restriction enzyme, BstUI and the fetal specific DNA (cffDNA) was quantified by Real-time polymerase chain reaction (qRT-PCR). RESULTS The mean hypermethylated RASSF1A concentrations in different gestational groups were Group 1: 30.1 ± 14.9, Group 2: 52.6 ± 22.18, Group 3: 93.2 ± 19.08, Group 4: 172.8 ± 26.81 and Group 5: 337.8 ± 52.9 copies/ml. Pearson's correlation analysis showed highly significant positive correlation between cffDNA and gestational age (r = 0.899, p < 0.001). BMI was also found to be positively related to cffDNA (r = 0.217, p < 0.05). However, it did not show any correlation with maternal age, height and pre-pregnancy weight. CONCLUSIONS The gestational age-dependent increase of hypermethylated RASSF1A; the fetal specific epigenetic marker in maternal plasma was demonstrated, in an Indian study group of normal pregnant women. Findings would form the basis of future studies involving pregnancy complications that would aid in the early diagnosis of placental pathologies with hypermethylated RASSF1A.
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Affiliation(s)
- Seema Saraswathy
- a Base Hospital, Delhi Cantt, School of Medicine & Paramedical Health Sciences, Guru Gobind Singh Indraprastha University , Delhi , India
| | - Kavita Sahai
- b Department of Pathology , Armed Forces Medical College (AFMC) , Pune , India
| | - Devendra Arora
- c Department of Obstetrics and Gynecology , Base Hospital and Army College of Medical Sciences (ACMS) , Delhi Cantt , India
| | - Manu Krishnan
- d Institute of Nuclear Medicine & Allied Sciences (INMAS), Defence Research & Development Organization(DRDO), Ministry of Defence, Govt. of India , Delhi , India
| | | | - Shilpie Biswas
- f Department of Biosciences , Jamia Millia Islamia , Delhi , India , and
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Saadeldin IM, Oh HJ, Lee BC. Embryonic-maternal cross-talk via exosomes: potential implications. STEM CELLS AND CLONING-ADVANCES AND APPLICATIONS 2015; 8:103-7. [PMID: 26185458 PMCID: PMC4500606 DOI: 10.2147/sccaa.s84991] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A myriad of locally produced factors into the microenvironment of the reproductive tract is regulated, not one-way but rather, through embryonic-maternal cross-talk. In this mini-review, we focused on the exosomes, which are cell-derived vesicles of 30-100 nm in diameter, as a communicating language facilitating this dialog. These nanovesicles are secreted from pre-implantation embryos, oviduct epithelium, and endometrium as well as from the placenta, and contain proteins, messenger RNA (mRNA), microRNA, and DNA cargoes, and have pleiotropic effects on both embryonic and maternal environments. A better understanding of the molecular mechanisms mediating this cross-talk will lead to the development of new regulating agents, with novel diagnostic, biological, and therapeutic potential for either supporting or hindering the normal reproductive functions.
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Affiliation(s)
- Islam M Saadeldin
- Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Hyun Ju Oh
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea
| | - Byeong Chun Lee
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea ; Institute of Green Bio Science and Technology, Seoul National University, Pyeong Chang, Kangwon do, Republic of Korea
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Alteration of Delta-like ligand 1 and Notch 1 receptor in various placental disorders with special reference to early onset preeclampsia. Hum Pathol 2015; 46:1129-37. [PMID: 26014475 DOI: 10.1016/j.humpath.2015.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Revised: 03/02/2015] [Accepted: 03/08/2015] [Indexed: 12/12/2022]
Abstract
Notch signaling pathway has been shown to be dysregulated in placentas with preeclampsia, but there has been a lack of studies on methylation of Notch family genes in this disorder. We therefore executed methylation-specific polymerase chain reaction and immunostaining for Notch 1 receptor and the activating ligand, Delta-like (DLL) 1, with placental tissues from cases of preeclampsia (early onset, n = 18; late-onset, n = 19) and other placental disorders, including maternal complications such as diabetes mellitus and collagen disease (n = 10), fetal growth restriction (n = 17), fetal anomaly (n = 23), preterm birth (n = 15), miscarriage (n = 25), and hydatidiform moles (n = 9) as well as term births (n = 12). The frequency of DLL1 methylation was higher in early onset preeclamptic placentas (61%) than the other subjects (0%-36%; P ≤ .016). Appreciable samples (36%) of miscarriage also represented DLL1 methylation. None of the samples studied showed Notch 1 methylation. On gestational period-matched analysis, the rate of DLL1 methylation was higher in early onset preeclampsia (83.3%) than preterm birth (13.3%; P < .001), with no significant differences in clinical backgrounds between the two. In this analysis, increase of syncytial knots and accelerated villous maturation were most prominent in DLL1-methylated placentas with early onset preeclampsia. Notch 1 and DLL1 expressions in villous trophoblasts and endothelial cells were significantly lower in early onset preeclamptic placentas as compared with preterm birth controls. In conclusion, altered Notch signaling via methylation of DLL1 is likely involved in possible disease-related mechanisms of early onset preeclampsia. Alternatively, DLL1 methylation in early onset preeclampsia could be a manifestation of a lack of placental maturation, similar to miscarriage.
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Nishida K, Smith Z, Rana D, Palmer J, Gallicano GI. Cystic fibrosis: A look into the future of prenatal screening and therapy. ACTA ACUST UNITED AC 2015; 105:73-80. [DOI: 10.1002/bdrc.21091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 02/20/2015] [Indexed: 12/31/2022]
Affiliation(s)
- Kevin Nishida
- Georgetown University School of Medicine, Georgetown University Special Master's Program in Physiology; NW, Med/Dent NE Washington DC
| | - Zachary Smith
- Georgetown University School of Medicine, Georgetown University Special Master's Program in Physiology; NW, Med/Dent NE Washington DC
| | - Dane Rana
- Georgetown University School of Medicine, Georgetown University Special Master's Program in Physiology; NW, Med/Dent NE Washington DC
| | - Jereme Palmer
- Georgetown University School of Medicine, Georgetown University Special Master's Program in Physiology; NW, Med/Dent NE Washington DC
| | - G. Ian Gallicano
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Georgetown University School of Medicine; NW, Med/Dent NE Washington DC
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Lew RM, Burnett L, Proos AL, Delatycki MB. Tay-Sachs disease: current perspectives from Australia. APPLICATION OF CLINICAL GENETICS 2015; 8:19-25. [PMID: 25653550 PMCID: PMC4309774 DOI: 10.2147/tacg.s49628] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Tay-Sachs disease (TSD) is a fatal, recessively inherited neurodegenerative condition of infancy and early childhood. Although rare in most other populations, the carrier frequency is one in 25 in Ashkenazi Jews. Australian high-school-based TSD preconception genetic screening programs aim to screen, educate, and optimize reproductive choice for participants. These programs have demonstrated high uptake, low psychological morbidity, and have been shown to result in fewer than expected Jewish TSD-affected births over 18 years of operation. The majority of Jewish individuals of reproductive age outside of the high school screening program setting in Australia have not accessed screening. Recent recommendations advocate supplementing the community high school screening programs with general practitioner- and obstetrician-led genetic screening of Ashkenazi Jewish individuals for TSD and other severe recessive diseases for which this group is at risk. Massively parallel DNA sequencing is expected to become the testing modality of choice over the coming years.
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Affiliation(s)
- Raelia M Lew
- Department of Obstetrics and Gynecology, QEII Research Institute for Mothers and Infants, The University of Sydney, Australia ; Department of Obstetrics and Gynaecology, Dentistry and Health Sciences, Faculty of Medicine, The University of Melbourne, Melbourne, Australia
| | - Leslie Burnett
- NSW Health Pathology North, Royal North Shore Hospital, St Leonards, Australia ; SEALS, Prince of Wales Hospital, Randwick, Australia ; Sydney Medical School-Northern, Royal North Shore Hospital E25, University of Sydney, Sydney, Australia
| | - Anné L Proos
- NSW Health Pathology North, Royal North Shore Hospital, St Leonards, Australia
| | - Martin B Delatycki
- Department of Clinical Genetics, Austin Health, Heidelberg, Australia ; Bruce Lefroy Centre for Genetic Health Research, Murdoch Childrens Research Institute, Parkville, Australia
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Validation of automatic scanning of microscope slides in recovering rare cellular events: application for detection of fetal cells in maternal blood. Prenat Diagn 2014; 34:538-46. [DOI: 10.1002/pd.4345] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Revised: 02/23/2014] [Accepted: 02/23/2014] [Indexed: 12/16/2022]
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Yotsumoto J, Sekizawa A, Koide K, Purwosunu Y, Ichizuka K, Matsuoka R, Kawame H, Okai T. Attitudes toward non-invasive prenatal diagnosis among pregnant women and health professionals in Japan. Prenat Diagn 2012; 32:674-9. [DOI: 10.1002/pd.3886] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Akihiko Sekizawa
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
| | - Keiko Koide
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
| | - Yuditiya Purwosunu
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
| | - Kiyotake Ichizuka
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
| | - Ryu Matsuoka
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
| | - Hiroshi Kawame
- Department of Genetic Counseling; Ochanomizu University Graduate School of Humanities and Sciences; Tokyo; Japan
| | - Takashi Okai
- Department of Obstetrics and Gynecology; Showa University School of Medicine; Tokyo; Japan
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Efficiency of manual scanning in recovering rare cellular events identified by fluorescence in situ hybridization: simulation of the detection of fetal cells in maternal blood. J Biomed Biotechnol 2012; 2012:610856. [PMID: 22505816 PMCID: PMC3312578 DOI: 10.1155/2012/610856] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Accepted: 12/19/2011] [Indexed: 11/22/2022] Open
Abstract
Fluorescence in situ hybridization (FISH) and manual scanning is a widely used strategy for retrieving rare cellular events such as fetal cells in maternal blood. In order to determine the efficiency of these techniques in detection of rare cells, slides of XX cells with predefined numbers (1–10) of XY cells were prepared. Following FISH hybridization, the slides were scanned blindly for the presence of XY cells by different observers. The average detection efficiency was 84% (125/148). Evaluation of probe hybridization in the missed events showed that 9% (2/23) were not hybridized, 17% (4/23) were poorly hybridized, while the hybridization was adequate for the remaining 74% (17/23). In conclusion, manual scanning is a relatively efficient method to recover rare cellular events, but about 16% of the events are missed; therefore, the number of fetal cells per unit volume of maternal blood has probably been underestimated when using manual scanning.
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Sedrak M, Hashad D, Adel H, Azzam A, Elbeltagy N. Use of Free Fetal DNA in Prenatal Noninvasive Detection of Fetal RhD Status and Fetal Gender by Molecular Analysis of Maternal Plasma. Genet Test Mol Biomarkers 2011; 15:627-31. [DOI: 10.1089/gtmb.2010.0263] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mona Sedrak
- Department of Clinical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Doaa Hashad
- Department of Clinical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Hesham Adel
- Department of Obstetrics and Gynecology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Amal Azzam
- Department of Obstetrics and Gynecology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Nermeen Elbeltagy
- Department of Obstetrics and Gynecology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
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Fenech M. Micronuclei and their association with sperm abnormalities, infertility, pregnancy loss, pre-eclampsia and intra-uterine growth restriction in humans. Mutagenesis 2011; 26:63-7. [PMID: 21164184 DOI: 10.1093/mutage/geq084] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The micronucleus (MN) assay is increasingly being used to study the association between DNA damage and infertility or pregnancy complications in humans. This review provides a brief overview of the studies published to date. The results of these studies appear to support the plausibility of the following hypotheses: (i) MN in spermatids in semen may be indicative of infertility risk, (ii) MN in peripheral blood lymphocytes in males correlate positively with DNA damage in sperm, (iii) infertile couples exhibit higher frequencies of MN than fertile couples and (iv) an abnormally high frequency of MN in peripheral blood lymphocytes is associated with pregnancy complications including miscarriage, intra-uterine growth restriction and pre-eclampsia. The studies published to date consistently indicate an association of MN in peripheral blood lymphocytes with impaired reproductive capacity. However, the conclusions of these studies, although statistically significant, are limited by small sample sizes and the need for verification in other independent cohorts. In conclusion, more attention should be given to the possibility of using MN assays in peripheral blood lymphocytes and reproductive tissues as a biomarker of risk for infertility and pregnancy complications in humans.
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Affiliation(s)
- Michael Fenech
- CSIRO Food and Nutritional Sciences, Gate 13, Kintore Avenue, Adelaide SA 5000, Australia.
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Sekizawa A, Purwosunu Y, Farina A, Shimizu H, Nakamura M, Wibowo N, Rizzo N, Okai T. Prediction of pre-eclampsia by an analysis of placenta-derived cellular mRNA in the blood of pregnant women at 15-20 weeks of gestation. BJOG 2010; 117:557-64. [DOI: 10.1111/j.1471-0528.2010.02491.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Guay-Woodford LM, Knoers NV. Genetic Testing: Considerations for Pediatric Nephrologists. Semin Nephrol 2009; 29:338-48. [DOI: 10.1016/j.semnephrol.2009.03.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Geifman-Holtzman O, Ober Berman J. Prenatal diagnosis: update on invasive versus noninvasive fetal diagnostic testing from maternal blood. Expert Rev Mol Diagn 2009; 8:727-51. [PMID: 18999924 DOI: 10.1586/14737159.8.6.727] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The modern obstetrics care includes noninvasive prenatal diagnosis testing such as first trimester screening performed between 11 and 14 weeks' gestation and second trimester screening performed between 15 and 20 weeks. In these screening tests, biochemical markers are measured in the maternal blood with or without ultrasound for fetal nuchal translucency with reported accuracy of up to 90%. Invasive procedures, including amniocentesis or chorionic villi sampling, are used to achieve over 99% accuracy. During these procedures direct fetal material is examined and, therefore, these tests are highly accurate with the caveat of a small risk for pregnancy loss. Much research now focuses on other noninvasive highly accurate and risk-free tests that will identify fetal material in the maternal blood. Fetal cells and fetal DNA/RNA provide fetal information but are hard to find in an overwhelming background of maternal cells and in the absence of specific fetal cell markers. The most experience has been accumulated with fetal rhesus and fetal sex determination from maternal blood, with an accuracy of up to 100% by using gene sequences that are absent from maternal blood. Although not clinically applicable yet, fetal cells, fetal DNA/RNA and fetal proteomics in combination with cutting edge technology are described to prenatally diagnose aneuploidies and single-gene disorders.
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Affiliation(s)
- Ossie Geifman-Holtzman
- Division of Reproductive Genetics and Maternal-Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, Temple University School of Medicine, Philadelphia, PA, USA.
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Zhang Y, Li Q, Hui N, Fei M, Hu Z, Sun S. Effect of formaldehyde treatment on the recovery of cell-free fetal DNA from maternal plasma at different processing times. Clin Chim Acta 2008; 397:60-4. [DOI: 10.1016/j.cca.2008.07.017] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2008] [Revised: 07/16/2008] [Accepted: 07/16/2008] [Indexed: 10/21/2022]
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