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Hur YM, Yoo JY, You YA, Park S, Kim SM, Lee G, Kim YJ. A genome-wide and candidate gene association study of preterm birth in Korean pregnant women. PLoS One 2023; 18:e0294948. [PMID: 38019868 PMCID: PMC10686439 DOI: 10.1371/journal.pone.0294948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 11/12/2023] [Indexed: 12/01/2023] Open
Abstract
Preterm birth (PTB) refers to delivery before 37 weeks of gestation. Premature neonates exhibit higher neonatal morbidity and mortality rates than term neonates; therefore, it is crucial to predict and prevent PTB. Advancements enable the prediction and prevention of PTB using genetic approaches, especially by investigating its correlation with single nucleotide polymorphisms (SNPs). We aimed to identify impactive and relevant SNPs for the prediction of PTB via whole-genome sequencing analyses of the blood of 31 pregnant women with PTB (n = 13) and term birth (n = 18) who visited the Ewha Womans University Mokdong Hospital from November 1, 2018 to February 29, 2020. A genome-wide association study was performed using PLINK 1.9 software and 256 SNPs were selected and traced through protein-protein interactions. Moreover, a validation study by genotyping was performed on 60 other participants (preterm birth, n = 30; term birth, n = 30) for 25 SNPs related to ion channel binding and receptor complex pathways. Odds ratios were calculated using additive, dominant, and recessive genetic models. The risk of PTB in women with the AG allele of rs2485579 (gene name: RYR2) was significantly 4.82-fold increase, and the risk of PTB in women with the AG allele of rs7903957 (gene name: TBX5) was significantly 0.25-fold reduce. Our results suggest that rs2485579 (in RYR2) can be a genetic marker of PTB, which is considered through the association with abnormal cytoplasmic Ca2+ concentration and dysfunctional uterine contraction due to differences of RYR2 in the sarcoplasmic reticulum.
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Affiliation(s)
- Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Jae Young Yoo
- Division of Biobank, Korea National Institute of Health (KNIH), Korea Disease Control and Prevention Agency (KDCA), Cheongju, Korea
| | - Young Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Gain Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
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Huang G, Yao D, Yan X, Zheng M, Yan P, Chen X, Wang D. Emerging role of toll-like receptors signaling and its regulators in preterm birth: a narrative review. Arch Gynecol Obstet 2023; 308:319-339. [PMID: 35916961 DOI: 10.1007/s00404-022-06701-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 07/03/2022] [Indexed: 11/02/2022]
Abstract
INTRODUCTION Despite intensive research, preterm birth (PTB) rates have not decreased significantly in recent years due to a lack of understanding of the underlying causes and insufficient treatment options for PTB. We are committed to finding promising biomarkers for the treatment of PTB. METHODS An extensive search of the literature was conducted with MEDLINE/PubMed, and in total, 151 studies were included and summarized in the present review. RESULTS Substantial evidence supports that the infection and/or inflammatory cascade associated with infection is an early event in PTB. Toll-like receptor (TLR) is a prominent pattern recognition receptor (PRR) found on both immune and non-immune cells, including fetal membrane cells. The activation of TLR downstream molecules, followed by TLR binding to its ligand, is critical for infection and inflammation, leading to the involvement of the TLR signaling pathway in PTB. TLR ligands are derived from microbial components and molecules released by damaged and dead cells. Particularly, TLR4 is an essential TLR because of its ability to recognize lipopolysaccharide (LPS). In this comprehensive overview, we discuss the role of TLR signaling in PTB, focus on numerous host-derived genetic and epigenetic regulators of the TLR signaling pathway, and cover ongoing research and prospective therapeutic options for treating PTB by inhibiting TLR signaling. CONCLUSION This is a critical topic because TLR-related molecules and mechanisms may enable obstetricians to better understand the physiological changes in PTB and develop new treatment and prevention strategies.
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Affiliation(s)
- Ge Huang
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Dan Yao
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoli Yan
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Mingyu Zheng
- Department of Pharmacy, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Ping Yan
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Xiaoxia Chen
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Dan Wang
- Department of Gynecology and Obstetrics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China.
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Genes, exposures, and interactions on preterm birth risk: an exploratory study in an Argentine population. J Community Genet 2022; 13:557-565. [PMID: 35976607 DOI: 10.1007/s12687-022-00605-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Accepted: 08/12/2022] [Indexed: 10/15/2022] Open
Abstract
Preterm birth (PTB) is the main condition related to perinatal morbimortality worldwide. The aim of this study was to identify associations of spontaneous PTB with genetic variants, exposures, and interactions between and within them. We carried out a retrospective case-control study including parental sociodemographic and obstetric data, and fetal genetic variants. We sequenced the coding and flanking regions of five candidate genes from the placental blood cord of 69 preterm newborns and 61 at term newborns. We identify the characteristics with the greatest predictive power of PTB using penalized regressions, in which we include exposures (E), genetic variants (G), and two-way interactions. Few prenatal visits (< 5) was the main predictor of PTB from 26 G, 35 E, 299 G × G, 564 E × E, and 875 G × E evaluated terms. Within the fetal genetic characteristics, we observed associations of rs4845397 (KCNN3, allele T) variant; G × G interaction between rs12621551 (COL4A3, allele T) and rs73993878 (COL4A3, allele A), which showed sensitivity to anemia; and G × G interaction between rs11680670 (COL4A3, allele T) and rs2074351 (PON1, allele A), which showed sensitivity to vaginal discharge. The results of this exploratory study suggest that social disparities and metabolic pathways linked to uterine relaxation, inflammation/infections, and collagen metabolism would be involved in PTB etiology. Future studies with a larger sample size are necessary to confirm these findings and to analyze a greater number of exposures.
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Rengarajan A, Mauro AK, Boeldt DS. Maternal disease and gasotransmitters. Nitric Oxide 2020; 96:1-12. [PMID: 31911124 DOI: 10.1016/j.niox.2020.01.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 12/20/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023]
Abstract
The three known gasotransmitters, nitric oxide, carbon monoxide, and hydrogen sulfide are involved in key processes throughout pregnancy. Gasotransmitters are known to impact on smooth muscle tone, regulation of immune responses, and oxidative state of cells and their component molecules. Failure of the systems that tightly regulate gasotransmitter production and downstream effects are thought to contribute to common maternal diseases such as preeclampsia and preterm birth. Normal pregnancy-related changes in uterine blood flow depend heavily on gasotransmitter signaling. In preeclampsia, endothelial dysfunction is a major contributor to aberrant gasotransmitter signaling, resulting in hypertension after 20 weeks gestation. Maintenance of pregnancy to term also requires gasotransmitter-mediated uterine quiescence. As the appropriate signals for parturition occur, regulation of gasotransmitter signaling must work in concert with those endocrine signals in order for appropriate labor and delivery timing. Like preeclampsia, preterm birth may have origins in abnormal gasotransmitter signaling. We review the evidence for the involvement of gasotransmitters in preeclampsia and preterm birth, as well as mechanistic and molecular signaling targets.
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Affiliation(s)
- Aishwarya Rengarajan
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA
| | - Amanda K Mauro
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA
| | - Derek S Boeldt
- Perinatal Research Laboratories, Dept Ob/ Gyn, UW - Madison, Madison, WI, 53715, USA.
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Strauss JF, Romero R, Gomez-Lopez N, Haymond-Thornburg H, Modi BP, Teves ME, Pearson LN, York TP, Schenkein HA. Spontaneous preterm birth: advances toward the discovery of genetic predisposition. Am J Obstet Gynecol 2018; 218:294-314.e2. [PMID: 29248470 PMCID: PMC5834399 DOI: 10.1016/j.ajog.2017.12.009] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Revised: 12/04/2017] [Accepted: 12/06/2017] [Indexed: 02/08/2023]
Abstract
Evidence from family and twin-based studies provide strong support for a significant contribution of maternal and fetal genetics to the timing of parturition and spontaneous preterm birth. However, there has been only modest success in the discovery of genes predisposing to preterm birth, despite increasing sophistication of genetic and genomic technology. In contrast, DNA variants associated with other traits/diseases have been identified. For example, there is overwhelming evidence that suggests that the nature and intensity of an inflammatory response in adults and children are under genetic control. Because inflammation is often invoked as an etiologic factor in spontaneous preterm birth, the question of whether spontaneous preterm birth has a genetic predisposition in the case of pathologic inflammation has been of long-standing interest to investigators. Here, we review various genetic approaches used for the discovery of preterm birth genetic variants in the context of inflammation-associated spontaneous preterm birth. Candidate gene studies have sought genetic variants that regulate inflammation in the mother and fetus; however, the promising findings have often not been replicated. Genome-wide association studies, an approach to the identification of chromosomal loci responsible for complex traits, have also not yielded compelling evidence for DNA variants predisposing to preterm birth. A recent genome-wide association study that included a large number of White women (>40,000) revealed that maternal loci contribute to preterm birth. Although none of these loci harbored genes directly related to innate immunity, the results were replicated. Another approach to identify DNA variants predisposing to preterm birth is whole exome sequencing, which examines the DNA sequence of protein-coding regions of the genome. A recent whole exome sequencing study identified rare mutations in genes encoding for proteins involved in the negative regulation (dampening) of the innate immune response (eg, CARD6, CARD8, NLRP10, NLRP12, NOD2, TLR10) and antimicrobial peptide/proteins (eg, DEFB1, MBL2). These findings support the concept that preterm labor, at least in part, has an inflammatory etiology, which can be induced by pathogens (ie, intraamniotic infection) or "danger signals" (alarmins) released during cellular stress or necrosis (ie, sterile intraamniotic inflammation). These findings support the notion that preterm birth has a polygenic basis that involves rare mutations or damaging variants in multiple genes involved in innate immunity and host defense mechanisms against microbes and their noxious products. An overlap among the whole exome sequencing-identified genes and other inflammatory conditions associated with preterm birth, such as periodontal disease and inflammatory bowel disease, was observed, which suggests a shared genetic substrate for these conditions. We propose that whole exome sequencing, as well as whole genome sequencing, is the most promising approach for the identification of functionally significant genetic variants responsible for spontaneous preterm birth, at least in the context of pathologic inflammation. The identification of genes that contribute to preterm birth by whole exome sequencing, or whole genome sequencing, promises to yield valuable population-specific biomarkers to identify the risk for spontaneous preterm birth and potential strategies to mitigate such a risk.
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Affiliation(s)
- Jerome F Strauss
- Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, VA; Department of Human and Molecular Genetics, Virginia Commonwealth University School of Medicine, Richmond, VA.
| | - Roberto Romero
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute for Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI; Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI.
| | - Nardhy Gomez-Lopez
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute for Child Health and Human Development, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD and Detroit, MI; Department of Obstetrics and Gynecology and the Department of Immunology, Microbiology and Biochemistry, Wayne State University School of Medicine, Detroit, MI
| | - Hannah Haymond-Thornburg
- Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, VA
| | - Bhavi P Modi
- Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, BC, Canada
| | - Maria E Teves
- Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, VA
| | - Laurel N Pearson
- Department of Anthropology, Pennsylvania State University, University Park, PA
| | - Timothy P York
- Department of Obstetrics and Gynecology, Virginia Commonwealth University School of Medicine, Richmond, VA; Department of Human and Molecular Genetics, Virginia Commonwealth University School of Medicine, Richmond, VA
| | - Harvey A Schenkein
- Department of Periodontics, Virginia Commonwealth University School of Dentistry, Richmond, VA
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Gimenez LG, Momany AM, Poletta FA, Krupitzki HB, Gili JA, Busch TD, Saleme C, Cosentino VR, Pawluk MS, Campaña H, Gadow EC, Murray JC, Lopez-Camelo JS. Association of candidate gene polymorphisms with clinical subtypes of preterm birth in a Latin American population. Pediatr Res 2017; 82:554-559. [PMID: 28426651 PMCID: PMC5570637 DOI: 10.1038/pr.2017.109] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 03/01/2017] [Indexed: 11/09/2022]
Abstract
BackgroundPreterm birth (PTB) is the leading cause of neonatal mortality and morbidity. PTB is often classified according to clinical presentation as follows: idiopathic (PTB-I), preterm premature rupture of membranes (PTB-PPROM), and medically induced (PTB-M). The aim of this study was to evaluate the associations between specific candidate genes and clinical subtypes of PTB.MethodsTwenty-four single-nucleotide polymorphisms (SNPs) were genotyped in 18 candidate genes in 709 infant triads. Of them, 243 were PTB-I, 256 were PTB-PPROM, and 210 were PTB-M. These data were analyzed with a Family-Based Association.ResultsPTB was nominally associated with rs2272365 in PON1, rs883319 in KCNN3, rs4458044 in CRHR1, and rs610277 in F3. Regarding clinical subtypes analysis, three SNPs were associated with PTB-I (rs2272365 in PON1, rs10178458 in COL4A3, and rs4458044 in CRHR1), rs610277 in F3 was associated with PTB-PPROM, and rs883319 in KCNN3 and rs610277 in F3 were associated with PTB-M.ConclusionOur study identified polymorphisms potentially associated with specific clinical subtypes of PTB in this Latin American population. These results could suggest a specific role of such genes in the mechanisms involved in each clinical subtype. Further studies are required to confirm our results and to determine the role of these genes in the pathophysiology of clinical subtypes.
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Affiliation(s)
- Lucas G. Gimenez
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
| | | | - Fernando A. Poletta
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
| | - Hugo B. Krupitzki
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | - Juan A. Gili
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
| | - Tamara D. Busch
- Department of Pediatrics, University of Iowa, Iowa City, Iowa
| | - Cesar Saleme
- Maternity Nuestra Señora de la Merced, Tucumán, Argentina
| | - Viviana R. Cosentino
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
| | - Mariela S. Pawluk
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
| | - Hebe Campaña
- CIC (Comisión de Investigaciones Científicas), La Plata, Buenos Aires, Argentina
| | - Enrique C. Gadow
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina
| | | | - Jorge S. Lopez-Camelo
- Research Unit, CEMIC-CONICET (Centro de Educación Médica e Investigaciones Clínicas-Consejo Nacional de Investigaciones Científicas y Técnicas), Buenos Aires, Argentina,ECLAMC (Estudio Colaborativo Latinoamericano de Malformaciones Congénitas) at INAGEMP (Instituto Nacional de Genética Médica Populacional), Buenos Aires, Argentina
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Sheikh IA, Ahmad E, Jamal MS, Rehan M, Assidi M, Tayubi IA, AlBasri SF, Bajouh OS, Turki RF, Abuzenadah AM, Damanhouri GA, Beg MA, Al-Qahtani M. Spontaneous preterm birth and single nucleotide gene polymorphisms: a recent update. BMC Genomics 2016; 17:759. [PMID: 27766960 PMCID: PMC5073925 DOI: 10.1186/s12864-016-3089-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background Preterm birth (PTB), birth at <37 weeks of gestation, is a significant global public health problem. World-wide, about 15 million babies are born preterm each year resulting in more than a million deaths of children. Preterm neonates are more prone to problems and need intensive care hospitalization. Health issues may persist through early adulthood and even be carried on to the next generation. Majority (70 %) of PTBs are spontaneous with about a half without any apparent cause and the other half associated with a number of risk factors. Genetic factors are one of the significant risks for PTB. The focus of this review is on single nucleotide gene polymorphisms (SNPs) that are reported to be associated with PTB. Results A comprehensive evaluation of studies on SNPs known to confer potential risk of PTB was done by performing a targeted PubMed search for the years 2007–2015 and systematically reviewing all relevant studies. Evaluation of 92 studies identified 119 candidate genes with SNPs that had potential association with PTB. The genes were associated with functions of a wide spectrum of tissue and cell types such as endocrine, tissue remodeling, vascular, metabolic, and immune and inflammatory systems. Conclusions A number of potential functional candidate gene variants have been reported that predispose women for PTB. Understanding the complex genomic landscape of PTB needs high-throughput genome sequencing methods such as whole-exome sequencing and whole-genome sequencing approaches that will significantly enhance the understanding of PTB. Identification of high risk women, avoidance of possible risk factors, and provision of personalized health care are important to manage PTB. Electronic supplementary material The online version of this article (doi:10.1186/s12864-016-3089-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ishfaq A Sheikh
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia
| | - Ejaz Ahmad
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia
| | - Mohammad S Jamal
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia
| | - Mohd Rehan
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia
| | - Mourad Assidi
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Iftikhar A Tayubi
- Faculty of Computing and Information Technology, King Abdulaziz University, Rabigh, Saudi Arabia
| | - Samera F AlBasri
- Department of Obstetrics and Gynecology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Osama S Bajouh
- Department of Obstetrics and Gynecology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rola F Turki
- Department of Obstetrics and Gynecology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia.,KACST Innovation Center in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adel M Abuzenadah
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia.,KACST Innovation Center in Personalized Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ghazi A Damanhouri
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia
| | - Mohd A Beg
- King Fahd Medical Research Center, King Abdulaziz University, PO Box 80216, Jeddah, 21589, Saudi Arabia.
| | - Mohammed Al-Qahtani
- Center of Excellence in Genomic Medicine Research, King Abdulaziz University, Jeddah, Saudi Arabia
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Aliloo H, Pryce JE, González-Recio O, Cocks BG, Hayes BJ. Validation of markers with non-additive effects on milk yield and fertility in Holstein and Jersey cows. BMC Genet 2015; 16:89. [PMID: 26193888 PMCID: PMC4509610 DOI: 10.1186/s12863-015-0241-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/25/2015] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND It has been suggested that traits with low heritability, such as fertility, may have proportionately more genetic variation arising from non-additive effects than traits with higher heritability, such as milk yield. Here, we performed a large genome scan with 408,255 single nucleotide polymorphism (SNP) markers to identify chromosomal regions associated with additive, dominance and epistatic (pairwise additive × additive) variability in milk yield and a measure of fertility, calving interval, using records from a population of 7,055 Holstein cows. The results were subsequently validated in an independent set of 3,795 Jerseys. RESULTS We identified genomic regions with validated additive effects on milk yield on Bos taurus autosomes (BTA) 5, 14 and 20, whereas SNPs with suggestive additive effects on fertility were observed on BTA 5, 9, 11, 18, 22, 27, 29 and the X chromosome. We also confirmed genome regions with suggestive dominance effects for milk yield (BTA 2, 3, 5, 26 and 27) and for fertility (BTA 1, 2, 3, 7, 23, 25 and 28). A number of significant epistatic effects for milk yield on BTA 14 were found across breeds. However on close inspection, these were likely to be associated with the mutation in the diacylglycerol O-acyltransferase 1 (DGAT1) gene, given that the associations were no longer significant when the additive effect of the DGAT1 mutation was included in the epistatic model. CONCLUSIONS In general, we observed a low statistical power (high false discovery rates and small number of significant SNPs) for non-additive genetic effects compared with additive effects for both traits which could be an artefact of higher dependence on linkage disequilibrium between markers and causative mutations or smaller size of non-additive effects relative to additive effects. The results of our study suggest that individual non-additive effects make a small contribution to the genetic variation of milk yield and fertility. Although we found no individual mutation with large dominance effect for both traits under investigation, a contribution to genetic variance is still possible from a large number of small dominance effects, so methods that simultaneously incorporate genotypes across all loci are suggested to test the variance explained by dominance gene actions.
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Affiliation(s)
- Hassan Aliloo
- Biosciences Research Division, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia. .,School of Applied Systems Biology, La Trobe University, Bundoora, VIC, 3083, Australia. .,Dairy Futures Cooperative Research Centre (CRC), AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia.
| | - Jennie E Pryce
- Biosciences Research Division, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia. .,School of Applied Systems Biology, La Trobe University, Bundoora, VIC, 3083, Australia. .,Dairy Futures Cooperative Research Centre (CRC), AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia.
| | - Oscar González-Recio
- Biosciences Research Division, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia. .,Dairy Futures Cooperative Research Centre (CRC), AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia.
| | - Benjamin G Cocks
- Biosciences Research Division, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia. .,School of Applied Systems Biology, La Trobe University, Bundoora, VIC, 3083, Australia. .,Dairy Futures Cooperative Research Centre (CRC), AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia.
| | - Ben J Hayes
- Biosciences Research Division, Department of Economic Development, Jobs, Transport and Resources, AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia. .,School of Applied Systems Biology, La Trobe University, Bundoora, VIC, 3083, Australia. .,Dairy Futures Cooperative Research Centre (CRC), AgriBio, 5 Ring Road, Bundoora, VIC, 3083, Australia.
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9
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Wang Y, Yang X, Zheng Y, Wu ZH, Zhang XA, Li QP, He XY, Wang CZ, Feng ZC. The SEPS1 G-105A polymorphism is associated with risk of spontaneous preterm birth in a Chinese population. PLoS One 2013; 8:e65657. [PMID: 23776519 PMCID: PMC3679159 DOI: 10.1371/journal.pone.0065657] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 04/25/2013] [Indexed: 11/23/2022] Open
Abstract
Inflammation plays an important role in the etiology and pathophysiology of spontaneous preterm birth (SPTB), and selenoprotein S (SEPS1) is involved in regulating the inflammatory response. Recently the G-105A promoter polymorphism in SEPS1 was shown to increase pro-inflammatory cytokine expression. We examined whether this functional polymorphism was related to the risk of SPTB in a Chinese population. We also examined the impact of premature rupture of membranes (PROM) on susceptibility to SPTB. The SEPS1 G-105A polymorphism was genotyped in 569 preterm singleton neonates and 673 term neonates by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis. χ2 tests and logistic regression analyses were used to calculate the odds ratios (ORs) and 95% confidence intervals (95% CIs). We observed that, compared with the GG genotype, –105A positive genotypes (GA + AA genotypes) were associated with significantly increased susceptibility to SPTB (adjusted OR, 1.87; 95% CI, 1.36–2.57; P<0.001). The –105A positive genotypes were also significantly associated with increased susceptibility to SPTB, both in the patients with PROM (adjusted OR, 2.65; 95% CI, 1.73–4.03; P<0.001) and in those without PROM (adjusted OR, 1.56; 95% CI, 1.09–2.24; P = 0.015). The –105A positive genotypes were also significantly associated with increased susceptibility to SPTB between extremely preterm neonates and controls (adjusted OR, 4.46; 95% CI, 1.86–10.73; P = 0.002) and between moderately preterm neonates and controls (adjusted OR, 1.76; 95% CI, 1.25–2.47; P = 0.001). Our findings suggest that the SEPS1 G-105A polymorphism contributes to the risk of developing SPTB in a Chinese population.
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Affiliation(s)
- Yan Wang
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
| | - Xiao Yang
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
| | - Yong Zheng
- The 309 Hospital of PLA, Beijing, P. R. China
| | - Zhi-Hao Wu
- Department of Infectious Disease Control, Beijing Institute of Disease Control and Prevention, Beijing, P. R. China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Qiu-Ping Li
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
| | - Xi-Yu He
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
| | - Chun-Zhi Wang
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
- * E-mail: (ZCF); (CZW)
| | - Zhi-Chun Feng
- BaYi Children’s Hospital, General Military Hospital of Beijing PLA, P. R. China
- * E-mail: (ZCF); (CZW)
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10
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Mann PC, Cooper ME, Ryckman KK, Comas B, Gili J, Crumley S, Bream EN, Byers HM, Piester T, Schaefer A, Christine PJ, Lawrence A, Schaa KL, Kelsey KJ, Berends SK, Gadow E, Cosentino V, Castilla EE, Camelo JL, Saleme C, Day LJ, England SK, Marazita ML, Dagle JM, Murray JC, Murray JC. Polymorphisms in the fetal progesterone receptor and a calcium-activated potassium channel isoform are associated with preterm birth in an Argentinian population. J Perinatol 2013; 33:336-40. [PMID: 23018797 PMCID: PMC3719965 DOI: 10.1038/jp.2012.118] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To investigate genetic etiologies of preterm birth (PTB) in Argentina through evaluation of single-nucleotide polymorphisms (SNPs) in candidate genes and population genetic admixture. STUDY DESIGN Genotyping was performed in 389 families. Maternal, paternal and fetal effects were studied separately. Mitochondrial DNA (mtDNA) was sequenced in 50 males and 50 females. Y-chromosome anthropological markers were evaluated in 50 males. RESULT Fetal association with PTB was found in the progesterone receptor (PGR, rs1942836; P=0.004). Maternal association with PTB was found in small conductance calcium activated potassium channel isoform 3 (KCNN3, rs883319; P=0.01). Gestational age associated with PTB in PGR rs1942836 at 32-36 weeks (P=0.0004). MtDNA sequencing determined 88 individuals had Amerindian consistent haplogroups. Two individuals had Amerindian Y-chromosome consistent haplotypes. CONCLUSION This study replicates single locus fetal associations with PTB in PGR, maternal association in KCNN3, and demonstrates possible effects for divergent racial admixture on PTB.
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Affiliation(s)
- Paul C. Mann
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Margaret E. Cooper
- Department of Oral Biology and Center for Craniofacial and Dental Genetics, Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219
| | - Kelli K. Ryckman
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Belén Comas
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina,Instituto Nacional de Genética Médica Populacional and Estudio Colaborativo Latino Americano de Malformaciones Congénitas at Laboratório de Epidemiologia de Malformações Congênitas Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Juan Gili
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina,Instituto Nacional de Genética Médica Populacional and Estudio Colaborativo Latino Americano de Malformaciones Congénitas at Laboratório de Epidemiologia de Malformações Congênitas Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Suzanne Crumley
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Elise N.A. Bream
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Heather M. Byers
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Travis Piester
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Amanda Schaefer
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Paul J. Christine
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Amy Lawrence
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Kendra L. Schaa
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | | | - Susan K. Berends
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Enrique Gadow
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina
| | - Viviana Cosentino
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina
| | - Eduardo E. Castilla
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina,Instituto Nacional de Genética Médica Populacional and Estudio Colaborativo Latino Americano de Malformaciones Congénitas at Laboratório de Epidemiologia de Malformações Congênitas Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
| | - Jorge López Camelo
- Centro de Educación Médica e Investigaciones Clínicas, Buenos Aires, Capital Federal, Argentina,Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Capital Federal, Argentina,Instituto Multidisciplinario de Biología Celular, La Plata, Buenos Aires, Argentina
| | - Cesar Saleme
- Instituto de Maternidad y Ginecología Nuestra Señora de las Mercedes, San Miguel de Tucumán, Tucumán, Argentina
| | - Lori J. Day
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, Iowa, 52242
| | - Sarah K. England
- Department of Obstetrics and Gynecology, University of Iowa, Iowa City, Iowa, 52242,Department of Molecular Physiology and Biophysics, University of Iowa, Iowa City, Iowa, 52242
| | - Mary L. Marazita
- Department of Oral Biology and Center for Craniofacial and Dental Genetics, Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, 15219
| | - John M. Dagle
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242
| | - Jeffrey C. Murray
- Department of Pediatrics, University of Iowa, Iowa City, Iowa, 52242,Corresponding Author: Jeffrey C. Murray, MD Professor, Departments of Pediatrics, Epidemiology, and Biological Sciences University of Iowa Carver College of Medicine 500 Newton Road, 2182 ML, Iowa City, IA 52242-1181 319-335-6897 phone; 319-335-6970 fax
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11
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Simonsen SE, Lyon JL, Stanford JB, Porucznik CA, Esplin MS, Varner MW. Risk factors for recurrent preterm birth in multiparous Utah women: a historical cohort study. BJOG 2013; 120:863-72. [DOI: 10.1111/1471-0528.12182] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2013] [Indexed: 12/01/2022]
Affiliation(s)
- SE Simonsen
- Department of Family and Preventive Medicine; Division of Public Health; University of Utah; Salt Lake City; UT; USA
| | - JL Lyon
- Department of Family and Preventive Medicine; Division of Public Health; University of Utah; Salt Lake City; UT; USA
| | - JB Stanford
- Department of Family and Preventive Medicine; Division of Public Health; University of Utah; Salt Lake City; UT; USA
| | - CA Porucznik
- Department of Family and Preventive Medicine; Division of Public Health; University of Utah; Salt Lake City; UT; USA
| | - MS Esplin
- Department of Obstetrics and Gynecology; University of Utah; Salt Lake City; UT; USA
| | - MW Varner
- Department of Obstetrics and Gynecology; University of Utah; Salt Lake City; UT; USA
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12
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Smith R, Paul J, Maiti K, Tolosa J, Madsen G. Recent advances in understanding the endocrinology of human birth. Trends Endocrinol Metab 2012; 23:516-23. [PMID: 22682480 DOI: 10.1016/j.tem.2012.05.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Revised: 04/23/2012] [Accepted: 05/01/2012] [Indexed: 02/06/2023]
Abstract
The timing of human birth has a crucial impact upon the survival of the fetus. New knowledge on the regulation of human birth includes the role of endogenous retroviruses in the formation of the syncytiotrophoblast cells and consequently the secretion of corticotrophin releasing hormone, a hormone linked to gestational length determination. miRNAs have been identified that mediate progesterone withdrawal at labor by suppressing progesterone-induced transcription factors. Progress has also been made in understanding how the contractile machinery of the uterine myocytes is activated at labor and the role of small heat-shock proteins in this process. From this work, new therapeutic targets have been identified that may be used to regulate the onset of labor and improve neonatal mortality.
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Affiliation(s)
- Roger Smith
- Mothers and Babies Research Centre, Faculty of Health, University of Newcastle, Callaghan, NSW 2308, Australia.
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13
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Progesterone interactions with the cervix: translational implications for term and preterm birth. Infect Dis Obstet Gynecol 2011; 2011:353297. [PMID: 22114461 PMCID: PMC3206389 DOI: 10.1155/2011/353297] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 08/29/2011] [Indexed: 01/04/2023] Open
Abstract
The uterine cervix plays a vital role in maintaining pregnancy and an equally important role in allowing parturition to occur. Progesterone, either endogenously produced or supplied exogenously, supports the function of the cervix in sustaining intrauterine pregnancy, and the withdrawal of progesterone, either through natural processes or pharmacologic intervention, leads to delivery which underscores the importance of the progesterone's biological activities manifest in normal gestation and pregnancy that ends prematurely. Research crossing many scientific disciplines has demonstrated that progesterone is a pleotropic compound that affects the cervix through cytoplasmic and membrane receptors with profound effects on cellular and molecular functions that influence inflammatory cascades and extracellular matrix, both of which have consequences for parturition. Beyond the local cell and molecular biology of progesterone, it has systemic effects of relevance to pregnancy as well. This paper examines the biology of the cervix from its gross to cellular structure and biological activities of its cell and molecular processes that may be affected by progesterone. The implications of these processes for preterm birth are explored, and direction of current research is in relation to translational medicine implications for diagnostic, prognostic, and therapeutic approaches to threatened preterm birth.
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