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Kwon E, Jin T, You YA, Kim B. Joint effect of long-term exposure to ambient air pollution on the prevalence of chronic obstructive pulmonary disease using the Korea National Health and Nutrition Examination Survey 2010-2019. Chemosphere 2024:142137. [PMID: 38670507 DOI: 10.1016/j.chemosphere.2024.142137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 04/03/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
BACKGROUND Little is known about the relationship between long-term joint exposure to mixtures of air pollutants and the prevalence of chronic obstructive pulmonary disease (COPD). We aimed to assess the joint impact of long-term exposure to ambient air pollution on the prevalence of COPD in Korea, especially in areas with high levels of air pollution. METHODS We included 22,387 participants who underwent spirometry tests in 2010-2019. The community multiscale air quality model was used to estimate the levels of ambient air pollution at residential addresses. The average exposure over the 5 years before the examination date was used to calculate the concentrations of air pollution. Forced expiratory volume in 1 second and forced vital capacity were used to define restrictive lung disease, COPD, and moderate-to-severe COPD. Quantile-based g-computation models were used to assess the joint impact of air pollution on COPD prevalence. RESULTS A total of 2,535 cases of restrictive lung disease, 2,787 cases of COPD, and 1,399 cases of moderate-to-severe COPD were identified. In the individual pollutant model, long-term exposure was significantly associated with both restrictive lung disease and COPD. In the mixture pollutant model, the odds ratios (ORs, 95% confidence intervals) for restrictive lung disease increased with each quartile increment in the 1- to 5-year average mixtures: 1.14 (1.02-1.28,1 year), 1.25 (1.11-1.41, 2 years), 1.26 (1.11-1.42, 3 years), 1.32 (1.16-1.51, 4 years), and 1.37 (1.19-1.58, 5 years), respectively. The increase in ORs of restrictive lung disease accelerated over time. By contrast, the ORs of COPD showed a decreasing trend over time. CONCLUSIONS Long-term exposure to air pollutants, both individually and jointly, was associated with an increased risk of developing COPD, particularly restrictive lung disease. Our findings highlight the importance of comprehensively assessing exposure to various air pollutants in relation to COPD.
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Affiliation(s)
- Eunjin Kwon
- Division of Allergy and Respiratory Disease Research, Department of Chronic Disease Convergence Research, National Institute of Health, Cheongju, Korea
| | - Taiyue Jin
- Division of Cancer Prevention, National Cancer Control Institute, National Cancer Center, Goyang, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, 07985 Seoul, Korea
| | - Byungmi Kim
- Division of Cancer Prevention, National Cancer Control Institute, National Cancer Center, Goyang, Korea; Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea.
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Ahn TG, Kim YJ, Lee G, You YA, Kim SM, Chae R, Hur YM, Park MH, Bae JG, Lee SJ, Kim YH, Na S. Association Between Individual Air Pollution (PM 10, PM 2.5) Exposure and Adverse Pregnancy Outcomes in Korea: A Multicenter Prospective Cohort, Air Pollution on Pregnancy Outcome (APPO) Study. J Korean Med Sci 2024; 39:e131. [PMID: 38599601 PMCID: PMC11004777 DOI: 10.3346/jkms.2024.39.e131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Accepted: 03/05/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND Prenatal exposure to ambient air pollution is linked to a higher risk of unfavorable pregnancy outcomes. However, the association between pregnancy complications and exposure to indoor air pollution remains unclear. The Air Pollution on Pregnancy Outcomes research is a hospital-based prospective cohort research created to look into the effects of aerodynamically exposed particulate matter (PM)10 and PM2.5 on pregnancy outcomes. METHODS This prospective multicenter observational cohort study was conducted from January 2021 to June 2023. A total of 662 women with singleton pregnancies enrolled in this study. An AirguardK® air sensor was installed inside the homes of the participants to measure the individual PM10 and PM2.5 levels in the living environment. The time-activity patterns and PM10 and PM2.5, determined as concentrations from the time-weighted average model, were applied to determine the anticipated exposure levels to air pollution of each pregnant woman. The relationship between air pollution exposure and pregnancy outcomes was assessed using logistic and linear regression analyses. RESULTS Exposure to elevated levels of PM10 throughout the first, second, and third trimesters as well as throughout pregnancy was strongly correlated with the risk of pregnancy problems according to multiple logistic regression models adjusted for variables. Except for in the third trimester of pregnancy, women exposed to high levels of PM2.5 had a high risk of pregnancy complications. During the second trimester and entire pregnancy, the risk of preterm birth (PTB) increased by 24% and 27%, respectively, for each 10 μg/m3 increase in PM10. Exposure to high PM10 levels during the second trimester increased the risk of gestational diabetes mellitus (GDM) by 30%. The risk of GDM increased by 15% for each 5 μg/m3 increase in PM2.5 during the second trimester and overall pregnancy, respectively. Exposure to high PM10 and PM2.5 during the first trimester of pregnancy increased the risk of delivering small for gestational age (SGA) infants by 96% and 26%, respectively. CONCLUSION Exposure to high concentrations of PM10 and PM2.5 is strongly correlated with the risk of adverse pregnancy outcomes. Exposure to high levels of PM10 and PM2.5 during the second trimester and entire pregnancy, respectively, significantly increased the risk of PTB and GDM. Exposure to high levels of PM10 and PM2.5 during the first trimester of pregnancy considerably increased the risk of having SGA infants. Our findings highlight the need to measure individual particulate levels during pregnancy and the importance of managing air quality in residential environment.
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Affiliation(s)
- Tae Gyu Ahn
- Department of Obstetrics and Gynecology, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University Mokdong Hospital, Ewha Medical Research Institute College of Medicine, Seoul, Korea
| | - Gain Lee
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Soo Min Kim
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Korea
| | - Rin Chae
- Division of Artificial Intelligence and Software/Artificial Intelligence Convergence, Ewha Womans University, Seoul, Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, School of Medicine, Keimyung University, Dongsan Medical Center, Daegu, Korea
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, Severance Hospital, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea.
| | - Sunghun Na
- Department of Obstetrics and Gynecology, Kangwon National University School of Medicine, Chuncheon, Korea.
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Park S, Shim M, Lee G, You YA, Kim SM, Hur YM, Ko H, Park MH, Na SH, Kim YH, Cho GJ, Bae JG, Lee SJ, Lee SH, Lee DK, Kim YJ. Urinary metabolite biomarkers of pregnancy complications associated with maternal exposure to particulate matter. Reprod Toxicol 2024; 124:108550. [PMID: 38280687 DOI: 10.1016/j.reprotox.2024.108550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 01/02/2024] [Accepted: 01/23/2024] [Indexed: 01/29/2024]
Abstract
Particulate matter 2.5 (PM2.5) is associated with reproductive health and adverse pregnancy outcomes. However, studies evaluating biological markers of PM2.5 are lacking, and identifying biomarkers for estimating prenatal exposure to prevent pregnancy complications is essential. Therefore, we aimed to explore urine metabolites that are easy to measure as biomarkers of exposure. In this matched case-control study based on the PM2.5 exposure, 30 high PM2.5 group (>15 μg/m3) and 30 low PM2.5 group (<15 μg/m3) were selected from air pollution on pregnancy outcome (APPO) cohort study. We used a time-weighted average model to estimate individual PM exposure, which used indoor PM2.5 and outdoor PM2.5 concentrations by atmospheric measurement network based on residential addresses. Clinical characteristics and urine samples were collected from participants during the second trimester of pregnancy. Urine metabolites were quantitatively measured using gas chromatography-mass spectrometry following multistep chemical derivatization. Statistical analyses were conducted using SPSS version 21 and MetaboAnalyst 5.0. Small for gestational age and gestational diabetes (GDM) were significantly increased in the high PM2.5 group, respectively (P = 0.042, and 0.022). Fifteen metabolites showed significant differences between the two groups (P < 0.05). Subsequent pathway enrichment revealed that four pathways, including pentose and glucuronate interconversion with three pentose sugars (ribose, arabinose, and xylose; P < 0.05). The concentration of ribose increased preterm births (PTB) and GDM (P = 0.044 and 0.049, respectively), and the arabinose concentration showed a tendency to increase in PTB (P = 0.044). Therefore, we identified urinary pentose metabolites as biomarkers of PM2.5 and confirmed the possibility of their relationship with pregnancy complications.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Minki Shim
- College of Pharmacy, Chung-Ang University, Seoul, Korea
| | - Gain Lee
- Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Soo Min Kim
- Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Hyejin Ko
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, Korea
| | - Sung Hun Na
- Department of Obstetrics and Gynecology, Kangwon National University, School of Medicine, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, Korea University College of Medicine, Korea
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, Keimyung University, School of Medicine, Dongsan Medical Center, Korea
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Korea
| | | | - Dong-Kyu Lee
- College of Pharmacy, Chung-Ang University, Seoul, Korea.
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea; Graduate program in system health science and engineering, Ewha Womans University, Seoul, Korea.
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You YA, Park S, Kwon E, Kim YA, Hur YM, Lee GI, Kim SM, Song JM, Kim MS, Kim YJ, Kim YH, Na SH, Park MH, Bae JG, Cho GJ, Lee SJ. Maternal PM2.5 exposure is associated with preterm birth and gestational diabetes mellitus, and mitochondrial OXPHOS dysfunction in cord blood. Environ Sci Pollut Res Int 2024; 31:10565-10578. [PMID: 38200189 PMCID: PMC10850187 DOI: 10.1007/s11356-023-31774-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024]
Abstract
Maternal exposure to fine particulate matter (PM2.5) is associated with adverse pregnancy and neonatal health outcomes. To explore the mechanism, we performed mRNA sequencing of neonatal cord blood. From an ongoing prospective cohort, Air Pollution on Pregnancy Outcome (APPO) study, 454 pregnant women from six centers between January 2021 and June 2022 were recruited. Individual PM2.5 exposure was calculated using a time-weighted average model. In the APPO study, age-matched cord blood samples from the High PM2.5 (˃15 ug/m3; n = 10) and Low PM2.5 (≤ 15 ug/m3; n = 30) groups were randomly selected for mRNA sequencing. After selecting genes with differential expression in the two groups (p-value < 0.05 and log2 fold change > 1.5), pathway enrichment analysis was performed, and the mitochondrial pathway was analyzed using MitoCarta3.0. The risk of preterm birth (PTB) increased with every 5 µg/m3 increase of PM2.5 in the second trimester (odds ratio 1.391, p = 0.019) after adjusting for confounding variables. The risk of gestational diabetes mellitus (GDM) increased in the second (odds ratio 1.238, p = 0.041) and third trimester (odds ratio 1.290, p = 0.029), and entire pregnancy (odds ratio 1.295, p = 0.029). The mRNA-sequencing of cord blood showed that genes related to mitochondrial activity (FAM210B, KRT1, FOXO4, TRIM58, and FBXO7) and PTB-related genes (ADIPOR1, YBX1, OPTN, NFkB1, HBG2) were upregulated in the High PM2.5 group. In addition, exposure to high PM2.5 affected mitochondrial oxidative phosphorylation (OXPHOS) and proteins in the electron transport chain, a subunit of OXPHOS. These results suggest that exposure to high PM2.5 during pregnancy may increase the risk of PTB and GDM, and dysregulate PTB-related genes. Alterations in mitochondrial OXPHOS by high PM2.5 exposure may occur not only in preterm infants but also in normal newborns. Further studies with larger sample sizes are required.
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Affiliation(s)
- Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea
| | - Sunwha Park
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea
| | - Eunjin Kwon
- Division of Allergy and Respiratory Disease Research, Department of Chronic Disease Convergence, National Institute of Health, Cheongju, 28159, Republic of Korea
| | - Ye-Ah Kim
- Translational-Transdisciplinary Research Center, Clinical Research Institute, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea
| | - Ga In Lee
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea
| | - Jeong Min Song
- Translational-Transdisciplinary Research Center, Clinical Research Institute, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
- Department of Obstetrics and Gynecology, Kyung Hee University Hospital at Gangdong, Kyung Hee University, Seoul, Republic of Korea
| | - Man S Kim
- Translational-Transdisciplinary Research Center, Clinical Research Institute, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology and Ewha Medical Institute, College of Medicine, Ewha Womans University, 1071, Anyangcheon-Ro, Yangcheon-Gu, Seoul, 07985, Republic of Korea.
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5
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Park S, Kwon E, Lee G, You YA, Kim SM, Hur YM, Jung S, Jee Y, Park MH, Na SH, Kim YH, Cho GJ, Bae JG, Lee SJ, Lee SH, Kim YJ. Correction: Park et al. Effect of Particulate Matter 2.5 on Fetal Growth in Male and Preterm Infants through Oxidative Stress. Antioxidants 2023, 12, 1916. Antioxidants (Basel) 2024; 13:135. [PMID: 38397852 PMCID: PMC10886171 DOI: 10.3390/antiox13020135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 02/25/2024] Open
Abstract
In the original publication [...].
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Eunjin Kwon
- Division of Allergy and Respiratory Disease Research, Department of Chronic Disease Convergence Research, Korea National Institute of Health, Cheongju-si 28159, Republic of Korea;
| | - Gain Lee
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Soo Min Kim
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Sooyoung Jung
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Yongho Jee
- Advanced Biomedical Research Institute, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea;
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea;
| | - Sung Hun Na
- Department of Obstetrics and Gynecology, School of Medicine, Kangwon National University, Chuncheon-si 24289, Republic of Korea;
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea;
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul 02841, Republic of Korea;
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, School of Medicine, Keimyung University, Dongsan Medical Center, Daegu 42601, Republic of Korea;
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ulsan University, Ulsan 44610, Republic of Korea;
| | - Sun Hwa Lee
- Seegene Medical Foundation, Seoul 04805, Republic of Korea;
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
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Ansari A, You YA, Lee G, Kim SM, Park SW, Hur YM, Kim YJ. Dysbiotic Vaginal Microbiota Induces Preterm Birth Cascade via Pathogenic Molecules in the Vagina. Metabolites 2024; 14:45. [PMID: 38248848 PMCID: PMC10821287 DOI: 10.3390/metabo14010045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024] Open
Abstract
Dysbiotic vaginal microbiota (DVM) disturb the vaginal environment, including pH, metabolite, protein, and cytokine profiles. This study investigated the impact of DVM on the vaginal environment in 40 Korean pregnant women and identified predictable biomarkers of birth outcomes. Cervicovaginal fluid (CVF) samples were collected in the third trimester using vaginal swabs, examined for pH, and stored at -80 °C for further analysis. The samples were grouped as full-term (FTB, n = 20) and preterm (PTB, n = 20) births. The microbiota was profiled in the V1-V9 regions. The levels of targeted metabolites, TLR-4, and cytokines were determined. The pH of CVF from PTB (>4.5) was significantly higher than that of the CVF from FTB (>3.5) (p < 0.05). Neonatal gestational age at delivery, birth weight, and Apgar score differed significantly between groups. The relative abundances of beneficial Lactobacillus spp., such as Lactobacillus gasseri, Lactobacillus jensenii, and Bifidobacterium, were higher in FTB, whereas those of pathogenic Enterococcus faecalis, Staphylococcus, Prevotella, Ureaplasma parvum, and Corynebacterium spp. were higher in PTB. Acetate, methanol, TLR-4, and TNF-α levels were negatively correlated with gestational age at delivery and birth weight. Moreover, ethanol, methanol, TLR-4, IL-6, IL-1β, and TNF-α levels were positively correlated with succinate, acetate, acetoacetate, formate, and ammonia. Overall, DVM induces preterm birth via pathogenic molecules in the vagina.
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Affiliation(s)
- AbuZar Ansari
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
| | - Gain Lee
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Sun Wha Park
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
| | - Young Min Hur
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
| | - Young Ju Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University, Seoul 07985, Republic of Korea; (Y.-A.Y.); (G.L.); (S.M.K.); (S.W.P.); (Y.M.H.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
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Jeong Y, Park S, Kwon E, Hur YM, You YA, Kim SM, Lee G, Lee KA, Kim SJ, Cho GJ, Oh MJ, Na SH, Lee SJ, Bae JG, Kim YH, Lee SJ, Kim YH, Kim YJ. Personal exposure of PM 2.5 and metabolic syndrome markers of pregnant women in South Korea: APPO study. Environ Sci Pollut Res Int 2023; 30:123893-123906. [PMID: 37996573 PMCID: PMC10746774 DOI: 10.1007/s11356-023-30921-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 11/02/2023] [Indexed: 11/25/2023]
Abstract
We examined the association between exposure to PM2.5, focused on individual exposure level, and metabolic dysfunction during pregnancy. APPO study (Air Pollution on Pregnancy Outcome) was a prospective, multicenter, observational cohort study conducted from January 2021 to March 2023. Individual PM2.5 concentrations were calculated using a time-weighted average model. Metabolic dysfunction during pregnancy was assessed based on a modified definition of metabolic syndrome and its components, accounting for pregnancy-specific criteria. Exposure to PM2.5 during pregnancy was associated with worsened metabolic parameters especially glucose metabolism. In comparison to participants exposed to the low PM2.5 group, those exposed to high PM2.5 levels exhibited increased odds of gestational diabetes mellitus (GDM) after adjusting for confounding variables in different adjusted models. Specifically, in model 1, the adjusted odds ratio (aOR) was 3.117 with a 95% confidence interval (CI) of 1.234-7.870; in model 2, the aOR was 3.855 with a 95% CI of 1.255-11.844; in model 3, the aOR was 3.404 with a 95% CI of 1.206-9.607; and in model 4, the aOR was 2.741 with a 95% CI of 0.712-10.547. Exposure to higher levels of PM2.5 during pregnancy was associated with a tendency to worsen metabolic dysfunction markers specifically in glucose homeostasis. Further research is needed to investigate the mechanisms underlying the effects of ambient PM2.5 on metabolic dysfunction during pregnancy.
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Affiliation(s)
- Yeonseong Jeong
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Eunjin Kwon
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Young-Ah You
- 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
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Gain Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Kyung A Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Soo Jung Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, College of Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Min-Jeong Oh
- Department of Obstetrics and Gynecology, College of Medicine, Korea University Guro Hospital, Seoul, Korea
| | - Sung Hun Na
- Department of Obstetrics and Gynecology, College of Medicine, Kangwon National University Hospital, Chuncheon, Korea
| | - Se Jin Lee
- Department of Obstetrics and Gynecology, College of Medicine, Kangwon National University Hospital, Chuncheon, Korea
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, College of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Yu-Hwan Kim
- Department of Obstetrics and Gynecology, College of Medicine, Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, Ulsan university hospital, University of Ulsan College of Medicine Ulsan, Ulsan, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, Institute of Women's Life Medical Science, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea.
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea.
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8
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Park S, Kwon E, Lee G, You YA, Kim SM, Hur YM, Jung S, Jee Y, Park MH, Na SH, Kim YH, Cho GJ, Bae JG, Lee SJ, Lee SH, Kim YJ. Effect of Particulate Matter 2.5 on Fetal Growth in Male and Preterm Infants through Oxidative Stress. Antioxidants (Basel) 2023; 12:1916. [PMID: 38001768 PMCID: PMC10669397 DOI: 10.3390/antiox12111916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/17/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Particulate matter 2.5 (PM2.5) levels are associated with adverse pregnancy outcomes. In this retrospective cohort study, we examined whether the concentration of indoor PM2.5 affected pregnancy outcomes. Additionally, we evaluated biomarkers of pregnancy-related complications caused by fine dust. We collected clinical information and data based on residential addresses from the Air Korea database to assess PM2.5 exposure levels. As a multicenter prospective cohort study, we measured the indoor PM2.5 concentration and inflammatory and oxidative stress markers. The PM2.5 concentration of the low-birth-weight (LBW) delivery group was 27.21 μg/m3, which was significantly higher than that of the normal-birth-weight (NBW) group (26.23 μg/m3) (p = 0.02). When the newborns were divided by sex, the PM2.5 concentration of the LBW group was 27.89 μg/m3 in male infants, which was significantly higher than that of the NBW group (26.26 μg/m3) (p = 0.01). In the prospective study, 8-hydroxy-2-deoxyguanosine significantly increased in the high-concentration group (113.55 ng/mL, compared with 92.20 ng/mL in the low-concentration group); in the high-concentration group, the rates of preterm birth (PTB) and small size for gestational age significantly increased (p < 0.01, p = 0.01). This study showed an association between PM2.5, oxidative stress, and fetal growth, with the PTB group being more vulnerable.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Eunjin Kwon
- Division of Allergy and Respiratory Disease Research, Department of Chronic Disease Convergence Research, Korea National Institute of Health, Cheongju-si 28159, Republic of Korea;
| | - Gain Lee
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Soo Min Kim
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Sooyoung Jung
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
| | - Yongho Jee
- Advanced Biomedical Research Institute, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea;
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea;
| | - Sung Hun Na
- Department of Obstetrics and Gynecology, School of Medicine, Kangwon National University, Chuncheon-si 24289, Republic of Korea;
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul 03722, Republic of Korea;
| | - Geum Joon Cho
- Department of Obstetrics and Gynecology, College of Medicine, Korea University, Seoul 02841, Republic of Korea;
| | - Jin-Gon Bae
- Department of Obstetrics and Gynecology, School of Medicine, Keimyung University, Dongsan Medical Center, Daegu 42601, Republic of Korea;
| | - Soo-Jeong Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ulsan University, Ulsan 44610, Republic of Korea;
| | - Sun Hwa Lee
- Seegene Medical Foundation, Seoul 04805, Republic of Korea;
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Republic of Korea; (S.P.); (Y.-A.Y.); (Y.M.H.); (S.J.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07985, Republic of Korea; (G.L.); (S.M.K.)
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9
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Ansari A, Son D, Hur YM, Park S, You YA, Kim SM, Lee G, Kang S, Chung Y, Lim S, Kim YJ. Lactobacillus Probiotics Improve Vaginal Dysbiosis in Asymptomatic Women. Nutrients 2023; 15:nu15081862. [PMID: 37111086 PMCID: PMC10143682 DOI: 10.3390/nu15081862] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Vaginal dysbiosis can lead to serious infections in asymptomatic women. Lactobacillus probiotics (LBPs) are being investigated as a promising therapy for reversing vaginal microbiota dysbiosis. This study aimed to investigate whether administering LBPs could improve vaginal dysbiosis and facilitate the colonization of Lactobacillus species in asymptomatic women. 36 asymptomatic women were classified based on the Nugent score as Low-NS (n = 26) and High-NS (n = 10) groups. A combination of Lactobacillus acidophilus CBT LA1, Lactobacillus rhamnosus CBT LR5, and Lactobacillus reuteri CBT LU4 was administered orally for 6 weeks. The study found that among women with a High-NS, 60% showed improved vaginal dysbiosis with a Low-NS after LBP intake, while four retained a High-NS. Among women with a Low-NS, 11.5 % switched to a High-NS. Genera associated with vaginal dysbiosis were positively correlated with the alpha diversity or NS, while a negative correlation was observed between Lactobacillus and the alpha diversity and with the NS. Vaginal dysbiosis in asymptomatic women with an HNS improved after 6 weeks of LBP intake, and qRT-PCR revealed the colonization of Lactobacillus spp. in the vagina. These results suggested that oral administration of this LBP could improve vaginal health in asymptomatic women with an HNS.
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Affiliation(s)
- AbuZar Ansari
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Dooheon Son
- R&D Center, Cell Biotech Co., Ltd., Gimpo 10003, Republic of Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Sunwha Park
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Gain Lee
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
| | - Seungbeom Kang
- R&D Center, Cell Biotech Co., Ltd., Gimpo 10003, Republic of Korea
| | - Yusook Chung
- R&D Center, Cell Biotech Co., Ltd., Gimpo 10003, Republic of Korea
| | - Sanghyun Lim
- R&D Center, Cell Biotech Co., Ltd., Gimpo 10003, Republic of Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul 07984, Republic of Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 07984, Republic of Korea
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10
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Hur YM, Park S, Kwon E, You YA, Ansari A, Kim SM, Lee G, Park MH, Lee KA, Kim SJ, Kim YH, Jung YS, Cho GJ, Oh MJ, Na SH, Lee SJ, An TG, Bae JG, Kim YH, Lee SJ, Kim NK, Ha EH, Kim YJ. The introduction to air pollution on pregnancy outcome (APPO) study: a multicenter cohort study. Obstet Gynecol Sci 2023; 66:169-180. [PMID: 36973177 DOI: 10.5468/ogs.22278] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/15/2023] [Indexed: 03/29/2023] Open
Abstract
The air pollution on pregnancy outcome, (APPO) study is a prospective hospital-based cohort study designed to investigate the maternal and fetal effects of particulate matter with an aerodynamic diameter <10 μm (PM10) and particulate matter with an aerodynamic diameter below 10 μm <2.5 μm (PM2.5) exposure. Specifically, approximately 1,200 pregnant women will be recruited for 3 years to collect data on exposure to fine dust, and the methods for measuring exposure to fine particles for each pregnant woman and estimating output will be established. This study aims to analyze the relationship between particulate matter and adverse pregnancy outcomes, identify related biomarkers, and develop management guidelines. We recruited early pregnant women without underlying diseases and collected biological samples using 5 mL of maternal venous blood and 15 mL of urine in each trimester of pregnancy; in addition, 5 mL of umbilical cord blood and 2×2×2 cm of placental tissue were collected after delivery. By applying PM10 and PM2.5 and time-activity patterns from the time-weighted average model, the individual predicted exposure to air pollution for the pregnant women was obtained. The APPO study can identify the degree of exposure to air pollution in pregnant women and use it as basic data for estimating individual exposure to particulate matter. The results of this APPO study will facilitate the development of health management strategies for pregnant women against air pollution.
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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
| | - Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Eunjin Kwon
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - AbuZar Ansari
- 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
| | - Mi Hye Park
- Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Kyung A Lee
- Ewha Womans University Seoul Hospital, Seoul, Korea
| | - Soo Jung Kim
- Ewha Womans University Seoul Hospital, Seoul, Korea
| | | | - Yeon-Sung Jung
- Yonsei University Gangnam Severance Hospital, Seoul, Korea
| | | | | | - Sung Hun Na
- Kangwon National University Hospital, Chuncheon, Korea
| | - Se Jin Lee
- Kangwon National University Hospital, Chuncheon, Korea
| | - Tae Gyu An
- Kangwon National University Hospital, Chuncheon, Korea
| | - Jin-Gon Bae
- Keimyung University Dongsan Medical Center, Daegu, Korea
| | - Yu-Hwan Kim
- Keimyung University Dongsan Medical Center, Daegu, Korea
| | | | - Na Kyung Kim
- Department of Environmental Science and Engineering, Ewha Womans University, Seoul, Korea
| | - Eun-Hee Ha
- Department of Preventive Medicine, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 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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11
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You YA, Park S, Kim K, Kwon EJ, Hur YM, Kim SM, Lee G, Ansari A, Park J, Kim YJ. Transition in vaginal Lactobacillus species during pregnancy and prediction of preterm birth in Korean women. Sci Rep 2022; 12:22303. [PMID: 36566290 PMCID: PMC9789976 DOI: 10.1038/s41598-022-26058-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 12/08/2022] [Indexed: 12/25/2022] Open
Abstract
The predominance of vaginal Lactobacillus species, specifically L. crispatus, is important for pregnancy maintenance, but varies by race. The composition of the vaginal microbiome can affect susceptibility to adverse pregnancy outcomes. We performed 16S rRNA gene amplicon sequencing on vaginal swabs taken from Korean pregnant women. Here, we report the transition of Lactobacillus spp. in samples of full-term birth (FTB) collected longitudinally in the second and third trimesters of pregnancy in a cohort study (n = 23) and their association with Lactobacillus abundance and preterm birth (PTB) in a case-control study (n = 200). Lactobacillus species, which was dominant in FTB samples including those that received interventions in the second trimester, did not change until 37 weeks of gestation. However, L. crispatus was replaced by other Lactobacillus species after 37 weeks. The PTB risk showed a closer association with the Lactobacillus abundance than with community state type determined by Lactobacillus species. PTB was associated with less than 90% of Lactobacillus abundance and an increase in Ureplasma parvum in the second trimester. Thus, the vaginal microbiome may change in preparation for childbirth in response to multiple intrinsic factors after 37 weeks of gestation. Monitoring the Lactobacillus abundance may help improve the reliability of microbial PTB biomarkers.
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Affiliation(s)
- Young-Ah You
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea
| | - Sunwha Park
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Womans University Mok Dong Hospital, Seoul, 158-051 South Korea
| | | | - Eun Jin Kwon
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea
| | - Young Min Hur
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Womans University Mok Dong Hospital, Seoul, 158-051 South Korea
| | - Soo Min Kim
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - Gain Lee
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | - AbuZar Ansari
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
| | | | - Young Ju Kim
- grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985 Republic of Korea ,grid.255649.90000 0001 2171 7754Department of Obstetrics and Gynecology, Ewha Womans University Mok Dong Hospital, Seoul, 158-051 South Korea ,grid.255649.90000 0001 2171 7754Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul, Republic of Korea
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12
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Park S, Moon J, Kang N, Kim YH, You YA, Kwon E, Ansari A, Hur YM, Park T, Kim YJ. Predicting preterm birth through vaginal microbiota, cervical length, and WBC using a machine learning model. Front Microbiol 2022; 13:912853. [PMID: 35983325 PMCID: PMC9378785 DOI: 10.3389/fmicb.2022.912853] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/05/2022] [Indexed: 11/13/2022] Open
Abstract
An association between the vaginal microbiome and preterm birth has been reported. However, in practice, it is difficult to predict premature birth using the microbiome because the vaginal microbial community varies highly among samples depending on the individual, and the prediction rate is very low. The purpose of this study was to select markers that improve predictive power through machine learning among various vaginal microbiota and develop a prediction algorithm with better predictive power that combines clinical information. As a multicenter case–control study with 150 Korean pregnant women with 54 preterm delivery group and 96 full-term delivery group, cervicovaginal fluid was collected from pregnant women during mid-pregnancy. Their demographic profiles (age, BMI, education level, and PTB history), white blood cell count, and cervical length were recorded, and the microbiome profiles of the cervicovaginal fluid were analyzed. The subjects were randomly divided into a training (n = 101) and a test set (n = 49) in a two-to-one ratio. When training ML models using selected markers, five-fold cross-validation was performed on the training set. A univariate analysis was performed to select markers using seven statistical tests, including the Wilcoxon rank-sum test. Using the selected markers, including Lactobacillus spp., Gardnerella vaginalis, Ureaplasma parvum, Atopobium vaginae, Prevotella timonensis, and Peptoniphilus grossensis, machine learning models (logistic regression, random forest, extreme gradient boosting, support vector machine, and GUIDE) were used to build prediction models. The test area under the curve of the logistic regression model was 0.72 when it was trained with the 17 selected markers. When analyzed by combining white blood cell count and cervical length with the seven vaginal microbiome markers, the random forest model showed the highest test area under the curve of 0.84. The GUIDE, the single tree model, provided a more reasonable biological interpretation, using the 10 selected markers (A. vaginae, G. vaginalis, Lactobacillus crispatus, Lactobacillus fornicalis, Lactobacillus gasseri, Lactobacillus iners, Lactobacillus jensenii, Peptoniphilus grossensis, P. timonensis, and U. parvum), and the covariates produced a tree with a test area under the curve of 0.77. It was confirmed that the association with preterm birth increased when P. timonensis and U. parvum increased (AUC = 0.77), which could also be explained by the fact that as the number of Peptoniphilus lacrimalis increased, the association with preterm birth was high (AUC = 0.77). Our study demonstrates that several candidate bacteria could be used as potential predictors for preterm birth, and that the predictive rate can be increased through a machine learning model employing a combination of cervical length and white blood cell count information.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
| | - Jeongsup Moon
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Nayeon Kang
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, South Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
| | - Eunjin Kwon
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
| | - AbuZar Ansari
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
| | - Taesung Park
- Interdisciplinary Program in Bioinformatics, Seoul National University, Seoul, South Korea
- Department of Statistics, Seoul National University, Seoul, South Korea
- *Correspondence: Taesung Park,
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, South Korea
- Young Ju Kim,
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13
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Park S, You YA, Kim YH, Kwon E, Ansari A, Kim SM, Lee G, Hur YM, Jung YJ, Kim K, Kim YJ. Ureaplasma and Prevotella colonization with Lactobacillus abundance during pregnancy facilitates term birth. Sci Rep 2022; 12:10148. [PMID: 35710793 PMCID: PMC9203766 DOI: 10.1038/s41598-022-13871-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Ureaplasma and Prevotella infections are well-known bacteria associated with preterm birth. However, with the development of metagenome sequencing techniques, it has been found that not all Ureaplasma and Prevotella colonizations cause preterm birth. The purpose of this study was to determine the association between Ureaplasma and Prevotella colonization with the induction of preterm birth even in the presence of Lactobacillus. In this matched case–control study, a total of 203 pregnant Korean women were selected and their cervicovaginal fluid samples were collected during mid-pregnancy. The microbiome profiles of the cervicovaginal fluid were analyzed using 16S rRNA gene amplification. Sequencing data were processed using QIIME1.9.1. Statistical analyses were performed using R software, and microbiome analysis was performed using the MicrobiomeAnalyst and Calypso software. A positive correlation between Ureaplasma and other genera was highly related to preterm birth, but interestingly, there was a negative correlation with Lactobacillus and term birth, with the same pattern observed with Prevotella. Ureaplasma and Prevotella colonization with Lactobacillus abundance during pregnancy facilitates term birth, although Ureaplasma and Prevotella are associated with preterm birth. Balanced colonization between Lactobacillus and Ureaplasma and Prevotella is important to prevent preterm birth.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea
| | - Eunjin Kwon
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - AbuZar Ansari
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Gain Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Young Min Hur
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea
| | - Yun Ji Jung
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea
| | | | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul, 07985, Korea.
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You YA, Kwon EJ, Hwang HS, Choi SJ, Choi SK, Kim YJ. Elevated methylation of the vault RNA2-1 promoter in maternal blood is associated with preterm birth. BMC Genomics 2021; 22:528. [PMID: 34246240 PMCID: PMC8272312 DOI: 10.1186/s12864-021-07865-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 06/30/2021] [Indexed: 11/23/2022] Open
Abstract
Background Preterm birth, defined as parturition before 37 completed weeks of gestation, is associated with an increased risk of neonatal complications and death, as well as poor health and disease later in life. Epigenetics could contribute to the mechanism underlying preterm birth. Results Genome-wide DNA methylation analysis of whole blood cells from 10 women (5 term and 5 preterm deliveries) was performed using an Illumina Infinium HumanMethylation450 BeadChips array. We identified 1,581 differentially methylated CpG sites in promoter regions between term and preterm birth. Although the differences were not significant after correcting for multiple tests, seven CpGs on the genomically imprinted vault RNA2-1 (VTRNA2-1; also known as non-coding RNA, nc886 or miR-886) showed the largest differences (range: 26–39 %). Pyrosequencing verification was performed with blood samples from pregnant women recruited additionally (39 term and 43 preterm deliveries). In total, 28 (34.1 %) samples showed hypomethylation of the VTRNA2-1 promoter (< 13 % methylation), while 54 (65.9 %) samples showed elevated methylation levels between 30 and 60 %. Elevated methylation of VTRNA2-1 promoter was associated with an increased risk of preterm birth after adjusting for maternal age, season of delivery, parity and white blood cell count. The mRNA expression of VTRNA2-1 was 0.51-fold lower in women with preterm deliveries (n = 20) compared with women with term deliveries (n = 20). Conclusions VTRNA2-1 is a noncoding transcript to environmentally responsive epialleles. Our results suggest that elevated methylation of the VTRNA2-1 promoter may result in increased risk of PTB caused by the pro-inflammatory cytokines. Further studies are needed to confirm the association of VTRNA2-1 methylation with preterm birth in a large population, and to elucidate the underlying mechanism. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07865-y.
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Affiliation(s)
- Young-Ah You
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, 07985, Seoul, Korea
| | - Eun Jin Kwon
- Graduate Program in System Health Science and Engineering, Ewha Womans University, 03760, Seoul, Korea
| | - Han-Sung Hwang
- Department of Obstetrics and Gynecology, Research Institute of Medical Science, Konkuk University School of Medicine, 143-729, Seoul, Korea
| | - Suk-Joo Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710, Seoul, Korea
| | - Sae Kyung Choi
- College of Medicine, The Catholic University of Korea, 505 Banpo-dong, Seocho-gu, 137-040, Seoul, Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University Medical School, 07985, Seoul, Korea. .,Graduate Program in System Health Science and Engineering, Ewha Womans University, 03760, Seoul, Korea. .,Department of Obstetrics and Gynecology, Ewha Womans University Mok Dong Hospital, 158-051, Seoul, South Korea.
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Park S, Oh D, Heo H, Lee G, Kim SM, Ansari A, You YA, Jung YJ, Kim YH, Lee M, Kim YJ. Prediction of preterm birth based on machine learning using bacterial risk score in cervicovaginal fluid. Am J Reprod Immunol 2021; 86:e13435. [PMID: 33905152 DOI: 10.1111/aji.13435] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/04/2021] [Accepted: 04/22/2021] [Indexed: 12/16/2022] Open
Abstract
PROBLEM Preterm birth (PTB) is a major cause of increased morbidity and mortality in newborns. The main cause of spontaneous PTB (sPTB) is the activation of an inflammatory response as a result of ascending genital tract infection. Despite various studies on the effects of the vaginal microbiome on PTB, a practical method for its clinical application has yet to be developed. METHOD OF STUDY In this case-control study, 94 Korean pregnant women with PTB (n = 38) and term birth (TB; n = 56) were enrolled. Their cervicovaginal fluid (CVF) was sampled, and a total of 10 bacteria were analyzed using multiplex quantitative real-time PCR (qPCR). The PTB and TB groups were compared, and a PTB prediction model was created using bacterial risk scores using machine learning techniques (decision tree and support vector machine). The predictive performance of the model was validated using random subsampling. RESULTS Bacterial risk scoring model showed significant differences (P < 0.001). The PTB risk was low when the Lactobacillus iners ratio was 0.812 or more. In groups with a ratio under 0.812, moderate and high risk was classified as a U. parvum ratio of 4.6 × 10-3 . The sensitivity and specificity of the PTB prediction model using bacteria risk score were 71% and 59%, respectively, and 77% and 67%, respectively, when white blood cell (WBC) data were included. CONCLUSION Using machine learning, the bacterial risk score in CVF can be used to predict PTB.
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Affiliation(s)
- Sunwha Park
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | | | - Hanna Heo
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Gain Lee
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea.,System Health & Engineering Major in Graduate School (BK21 Plus Program, Seoul, Korea
| | - Soo Min Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea.,System Health & Engineering Major in Graduate School (BK21 Plus Program, Seoul, Korea
| | - AbuZar Ansari
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea
| | - Yun Ji Jung
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea
| | - Young-Han Kim
- Department of Obstetrics and Gynecology, College of Medicine, Yonsei University, Seoul, Korea
| | | | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Medical Research Institute, Ewha Womans University, Seoul, Korea.,System Health & Engineering Major in Graduate School (BK21 Plus Program, Seoul, Korea
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16
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Oh SS, Park S, You YA, Jee Y, Ansari A, Kim SM, Lee G, Kim YJ. Prenatal Exposure to Alcohol, Tobacco, and Coffee: Associated Congenital Complications and Adverse Birth Outcomes. Int J Environ Res Public Health 2021; 18:3140. [PMID: 33803679 PMCID: PMC8003057 DOI: 10.3390/ijerph18063140] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 03/17/2021] [Accepted: 03/17/2021] [Indexed: 12/11/2022]
Abstract
A few studies to date have examined the association between prenatal exposure to alcohol, tobacco, and coffee, and congenital complications/adverse birth outcomes among South Korean populations. Thus, this study analyzed the data of 1675 Korean women with birth experience within the last 3 years for pregnancy-related health and nutritional behaviors and relative outcomes. During their pregnancies, 11.58% of the study population consumed alcohol at least once, 1.43% drank throughout all three trimesters, 1.13% smoked, 25.43% were exposed to secondhand smoking, and 28.18% consumed 3 coffees or more every day. Prenatal alcohol exposure was associated with 11.24 times increased risk of birth defects/disabilities [Odds Ratio (OR): 11.24, 95% Confidence Interval (CI) 1.07-117.86] and 10.66 times increased risk of inherited metabolic diseases (OR: 10.66, 95% CI: 1.08-104.82). Prenatal secondhand smoke exposure (OR: 1.62, 95% CI: 1.01-2.62) and coffee consumption (OR: 1.92, 95% CI: 1.22-3.03) was associated with increased risk of low birth weight. Such results were in alignment with that of previous studies and confirmed that prenatal alcohol, tobacco, and coffee exposure can have detrimental neonatal and maternal consequences.
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Affiliation(s)
- Sarah Soyeon Oh
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Department of Obstetrics & Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Korea
| | - Sunwha Park
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Department of Obstetrics & Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Korea
| | - Young-Ah You
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Medical Research Institute, College of Medicine, Ewha Womans University Seoul Hospital, Seoul 07985, Korea
| | - Yongho Jee
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Advanced Biomedical Research Institute, Ewha Womans University Seoul Hospital, Seoul 07985, Korea
| | - AbuZar Ansari
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Medical Research Institute, College of Medicine, Ewha Womans University Seoul Hospital, Seoul 07985, Korea
| | - Soo Min Kim
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Gain Lee
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
| | - Young Ju Kim
- Fetal Alcohol Syndrome Prevention Center, Ewha Institute of Convergence Medicine, Ewha Womans University, Mokdong Hospital, Seoul 07985, Korea; (S.S.O.); (S.P.); (Y.-A.Y.); (Y.J.); (A.A.); (S.M.K.); (G.L.)
- Department of Obstetrics & Gynecology, College of Medicine, Ewha Womans University, Seoul 07985, Korea
- Medical Research Institute, College of Medicine, Ewha Womans University Seoul Hospital, Seoul 07985, Korea
- Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Korea
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17
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Kwon EJ, Lee HA, You YA, Yoo JY, Park H, Park EA, Ha EH, Kim YJ. MC4R and HNF4α promoter methylation at birth contribute to triglyceride levels in childhood: A prospective cohort study. Medicine (Baltimore) 2019; 98:e16424. [PMID: 31305461 PMCID: PMC6641802 DOI: 10.1097/md.0000000000016424] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Although the changes in DNA methylation are assumed to be due to the association between adverse intrauterine conditions and adult metabolic health, evidence from human studies is rare. Little is known about the changes in DNA methylation present at birth that affect metabolic profiles in childhood. Previous studies have shown that the melanocortin 4 receptor (MC4R) and hepatocyte nuclear factor 4 alpha (HNF4α) genes are associated with obesity and metabolic disorders. Thus, we investigated the associations of the DNA methylation statuses of MC4R and HNF4α in cord blood with metabolic profiles in childhood.We collected data from 90 children 7 to 9 years of age included in the Ewha Birth & Growth Cohort Study in Korea. DNA methylation was analyzed by pyrosequencing. The children were split into 2 groups according to the cutoff triglyceride (TG) levels (<110 and ≥110 mg/dL).The methylation statuses of MC4R and HNF4α at birth were significantly associated with the TG level in childhood (P < .05). It was interesting to note that the methylation statuses of MC4R and HNF4α in cord blood were significantly decreased, whereas childhood body mass index was significantly increased, in children with high TG levels compared with children with low TG levels (P < .05).Our findings show that the methylation statuses of MC4R and HNF4α at birth are associated with metabolic profiles in childhood. These epigenetic modifications occurring in early life may contribute to subsequent metabolic-related disorders. Thus, we suggest that DNA methylation status in cord blood may be predictive of the risk of developing metabolic syndrome.
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Affiliation(s)
| | | | | | | | | | | | - Eun Hee Ha
- Department of Occupational and Environmental Medicine
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
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18
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You YA, Kwon EJ, Choi SJ, Hwang HS, Choi SK, Lee SM, Kim YJ. Vaginal microbiome profiles of pregnant women in Korea using a 16S metagenomics approach. Am J Reprod Immunol 2019; 82:e13124. [PMID: 31134711 DOI: 10.1111/aji.13124] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 04/03/2019] [Accepted: 04/04/2019] [Indexed: 12/28/2022] Open
Abstract
PROBLEM The stability and dominance of Lactobacillus spp. in vaginal fluid are important for reproductive health. However, the characterization of the vaginal microbiota of women with preterm labor (PTL) or preterm premature rupture of membranes (P-PROM), and its association with preterm birth (PTB) are poorly understood. METHOD OF STUDY We collected vaginal fluid from women at risk of PTB (n = 58) in five university hospitals in Korea. We performed a hierarchical clustering analysis and classification according to the Lactobacillus spp. and Lactobacillus abundance using Illumina MiSeq sequencing of 16S rRNA gene amplicons. RESULTS Women at risk for PTB caused by P-PROM had greater bacterial richness and diversity at the time of admission than those with PTL (P < 0.05). However, they were not significantly different between term and preterm samples. In the classification by Lactobacillus spp., the community commonly dominated by Bacteroides and Lactobacillus crispatus was found for the first time in pregnant women in Korea, and all women with this community delivered preterm. Intriguingly, women with an abundance of Weissella in a Bacteroides-dominant community delivered at term. Moreover, in the classification by Lactobacillus proportion, the abundances of Weissella and Rickettsiales were associated with term deliveries, but the abundances of Bacteroides and Escherichia-Shigella were associated with PTBs (P < 0.05). CONCLUSION This result suggests that Lactobacillus abundance-based classification of vaginal fluid may reveal the microbiome associated with PTB. Further studies are needed to investigate the mechanism underlying the link between the microbiome and PTB.
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Affiliation(s)
- Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Eun Jin Kwon
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Suk-Joo Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Han-Sung Hwang
- Department of Obstetrics and Gynecology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Sae-Kyung Choi
- Department of Obstetrics and Gynecology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung Mi Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
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You YA, Yoo JY, Kwon EJ, Kim YJ. Blood Microbial Communities During Pregnancy Are Associated With Preterm Birth. Front Microbiol 2019; 10:1122. [PMID: 31214131 PMCID: PMC6558066 DOI: 10.3389/fmicb.2019.01122] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 05/03/2019] [Indexed: 12/15/2022] Open
Abstract
Microbial infection of the placenta, amniotic fluid, vaginal canal, and oral cavity is known to significantly contribute to preterm birth (PTB). Although microbes can be translocated into the blood, little is known regarding the blood microbiota during pregnancy. To assess changes in the microbiome during pregnancy, blood samples were obtained 2 or 3 times during pregnancy from a cohort of 45 pregnant women enrolled between 2008 and 2010. To analyze the association with PTB, we conducted a case-control study involving 41 pregnant women upon admission for preterm labor and rupture of membrane (20 with term delivery; 21 with PTB). Bacterial diversity was assessed in number and composition between the first, second, and third trimesters in term delivered women according to 16S rRNA gene amplicon sequencing, and data were analyzed using Quantitative Insight Into Microbial Ecology (QIIME). Taxonomy was assigned using the GreenGenes 8.15.13 database. Dominant microorganisms at the phylum level in all pregnant women were identified as Firmicutes, Proteobacteria, Bacteroidetes, and Actinobacteria. However, the number and composition of bacteria in women with PTB differed from that in women with term delivery. Firmicutes and Bacteroidetes were more abundant in women with PTB than in women with term delivery, while Proteobacteria was less prevalent in women with PTB. At the genus level, Bacteroides, Lactobacillus, Sphingomonas, Fastidiosipila, Weissella, and Butyricicoccus were enriched in PTB samples. These observational results suggest that several taxa in the maternal blood microbiome are associated with PTB. Further studies are needed to confirm the composition of the blood microbiota in women with PTB. Additionally, the mechanism by which pathogenic microbes in maternal blood cause infection and PTB requires further analysis.
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Affiliation(s)
- Young-Ah You
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University School of Medicine, Seoul, South Korea
| | - Jae Young Yoo
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University School of Medicine, Seoul, South Korea
| | - Eun Jin Kwon
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University School of Medicine, Seoul, South Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Medical Research Institute, Ewha Womans University School of Medicine, Seoul, South Korea
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Kwon EJ, You YA, Park B, Ha EH, Kim HS, Park H, Kim YJ. Association between the DNA methylations of POMC, MC4R, and HNF4A and metabolic profiles in the blood of children aged 7-9 years. BMC Pediatr 2018; 18:121. [PMID: 29598821 PMCID: PMC5877386 DOI: 10.1186/s12887-018-1104-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Accepted: 03/27/2018] [Indexed: 02/07/2023] Open
Abstract
Background Proopiomelanocortin (POMC), melanocortin 4 receptor (MC4R), and hepatocyte nuclear factor 4 alpha (HNF4A) are closely associated with weight gain and metabolic traits. In a previous study, we demonstrated associations between the methylations of POMC, MC4R, and HNF4A and metabolic profiles at birth. However, little is known about these associations in obese children. To evaluate the clinical utility of epigenetic biomarkers, we investigated to determine whether an association exists between the methylations of POMC, MC4R, and HNF4A and metabolic profiles in blood of normal weight and overweight and obese children. Methods We selected 79 normal weight children and 41 overweight and obese children aged 7–9 years in the Ewha Birth and Growth Cohort study. POMC methylation levels at exon 3, and MC4R and HNF4A methylation levels in promoter regions were measured by pyrosequencing. Serum glucose, total cholesterol (TC), triglyceride, high-density lipoprotein cholesterol (HDL–c), and insulin levels were analyzed using a biochemical analyzer and an immunoradiometric assay. Partial correlation and multiple regression analysis were used to assess relationships between POMC, MC4R, and HNF4A methylation levels and metabolic profiles. Results Significant correlations were found between POMC methylation and HDL–c levels, and between HNF4A methylation and both TC and HDL–c levels. Interestingly, associations were found between POMC methylation status and HDL–c levels, and between HNF4A methylation status and TC levels independent of body mass index. Conclusions These findings show that POMC, MC4R, and HNF4A methylation status in the blood of children are associated with metabolic profiles. Therefore, we suggest that the DNA methylation status might serve as a potential epigenetic biomarkers of metabolic syndrome.
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Affiliation(s)
- Eun Jin Kwon
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985, South Korea.,Department of Occupational and Environmental Medicine, Ewha Womans University Medical School, Seoul, 07985, South Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul, 07985, South Korea
| | - Bohyun Park
- Department of Preventive Medicine, Ewha Womans University Medical School, Seoul, 07985, South Korea
| | - Eun Hee Ha
- Department of Occupational and Environmental Medicine, Ewha Womans University Medical School, Seoul, 07985, South Korea
| | - Hae Soon Kim
- Department of Pediatrics, Ewha Womans University Medical School, Seoul, 07985, South Korea
| | - Hyesook Park
- Department of Preventive Medicine, Ewha Womans University Medical School, Seoul, 07985, South Korea.
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University Medical School, Seoul, 07985, South Korea.
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You YA, Mohamed EA, Rahman MS, Kwon WS, Song WH, Ryu BY, Pang MG. 2,3,7,8-Tetrachlorodibenzo-p-dioxin can alter the sex ratio of embryos with decreased viability of Y spermatozoa in mice. Reprod Toxicol 2018; 77:130-136. [PMID: 29505796 DOI: 10.1016/j.reprotox.2018.02.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 02/21/2018] [Accepted: 02/27/2018] [Indexed: 12/16/2022]
Abstract
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a reproductive and developmental toxicant that can alter the sex ratio of offspring (proportion of male offspring). We hypothesized that the alteration of sex ratio is associated with sex chromosome ratio of live spermatozoa affected by exposure to TCDD. After exposure to TCDD we analyzed simultaneously sperm sex chromosome constitution and viability, and evaluated sperm sex chromosome ratio association with embryo sex ratio in mice. Short-term exposure to TCDD affects the decreased sperm motility and viability, and the increased acrosome reaction. Interestingly, Y spermatozoa survived shorter than X spermatozoa at high concentrations of TCDD. Moreover, the decreased sex ratio of embryos was associated with the short lifespan of Y spermatozoa. Our results suggest that TCDD may affect the fertility of Y spermatozoa more than X spermatozoa. Further studies are needed to compare the difference of fertilizing capability between X and Y spermatozoa by the effect of TCDD.
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Affiliation(s)
- Young-Ah You
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Elsayed A Mohamed
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Md Saidur Rahman
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Woo-Sung Kwon
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Won-Hee Song
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Buom-Yong Ryu
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
| | - Myung-Geol Pang
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Republic of Korea.
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Seo H, Kwon EJ, You YA, Park Y, Min BJ, Yoo K, Hwang HS, Kim JH, Kim YJ. Deleterious genetic variants in ciliopathy genes increase risk of ritodrine-induced cardiac and pulmonary side effects. BMC Med Genomics 2018; 11:4. [PMID: 29368655 PMCID: PMC5784607 DOI: 10.1186/s12920-018-0323-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 01/08/2018] [Indexed: 12/13/2022] Open
Abstract
Background Ritodrine is a commonly used tocolytic to prevent preterm labour. However, it can cause unexpected serious adverse reactions, such as pulmonary oedema, pulmonary congestion, and tachycardia. It is unknown whether such adverse reactions are associated with pharmacogenomic variants in patients. Methods Whole-exome sequencing of 13 subjects with serious ritodrine-induced cardiac and pulmonary side-effects was performed to identify causal genes and variants. The deleterious impact of nonsynonymous substitutions for all genes was computed and compared between cases (n = 13) and controls (n = 30). The significant genes were annotated with Gene Ontology (GO), and the associated disease terms were categorised into four functional classes for functional enrichment tests. To assess the impact of distributed rare variants in cases with side effects, we carried out rare variant association tests with a minor allele frequency ≤ 1% using the burden test, the sequence Kernel association test (SKAT), and optimised SKAT. Results We identified 28 genes that showed significantly lower gene-wise deleteriousness scores in cases than in controls. Three of the identified genes—CYP1A1, CYP8B1, and SERPINA7—are pharmacokinetic genes. The significantly identified genes were categorized into four functional classes: ion binding, ATP binding, Ca2+-related, and ciliopathies-related. These four classes were significantly enriched with ciliary genes according to SYSCILIA Gold Standard genes (P < 0.01), thus representing ciliary genes. Furthermore, SKAT showed a marginal trend toward significance after Bonferroni correction with Joubert Syndrome ciliopathy genes (P = 0.05). With respect to the pharmacokinetic genes, rs1048943 (CYP1A1) and rs1804495 (SERPINA7) showed a significantly higher frequency in cases than controls, as determined by Fisher’s exact test (P < 0.05 and P < 0.01, respectively). Conclusions Ritodrine-induced cardiac and pulmonary side effects may be associated with deleterious genetic variants in ciliary and pharmacokinetic genes.
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Affiliation(s)
- Heewon Seo
- Seoul National University Biomedical Informatics (SNUBI), Div. of Biomedical Informatics, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Eun Jin Kwon
- Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, 07985, Korea
| | - Young-Ah You
- Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, 07985, Korea
| | - Yoomi Park
- Seoul National University Biomedical Informatics (SNUBI), Div. of Biomedical Informatics, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Byung Joo Min
- Seoul National University Biomedical Informatics (SNUBI), Div. of Biomedical Informatics, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Kyunghun Yoo
- Seoul National University Biomedical Informatics (SNUBI), Div. of Biomedical Informatics, Seoul National University College of Medicine, Seoul, 03080, Korea
| | - Han-Sung Hwang
- Department of Obstetrics and Gynecology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, 05030, Korea
| | - Ju Han Kim
- Seoul National University Biomedical Informatics (SNUBI), Div. of Biomedical Informatics, Seoul National University College of Medicine, Seoul, 03080, Korea.
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, College of Medicine, Ewha Womans University Mok Dong Hospital, Seoul, 07985, Korea.
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You YA, Kwon WS, Saidur Rahman M, Park YJ, Kim YJ, Pang MG. Sex chromosome-dependent differential viability of human spermatozoa during prolonged incubation. Hum Reprod 2017; 32:1183-1191. [DOI: 10.1093/humrep/dex080] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 04/03/2017] [Indexed: 12/29/2022] Open
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Lee S, You YA, Kwon EJ, Jung SC, Jo I, Kim YJ. Maternal Food Restriction during Pregnancy and Lactation Adversely Affect Hepatic Growth and Lipid Metabolism in Three-Week-Old Rat Offspring. Int J Mol Sci 2016; 17:ijms17122115. [PMID: 27983688 PMCID: PMC5187915 DOI: 10.3390/ijms17122115] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/02/2016] [Accepted: 12/11/2016] [Indexed: 12/14/2022] Open
Abstract
Maternal malnutrition influences the early development of foetal adaptive changes for survival. We explored the effects of maternal undernutrition during gestation and lactation on hepatic growth and function. Sprague-Dawley rats were fed a normal or a food-restricted (FR) diet during gestation and/or lactation. We performed analyses of covariance (adjusting for the liver weight/body weight ratio) to compare hepatic growth and lipid metabolism among the offspring. Maternal FR during gestation triggered the development of wide spaces between hepatic cells and increased the expression of mammalian target of rapamycin (mTOR) in three-week-old male offspring compared with controls (both p < 0.05). Offspring nursed by FR dams exhibited wider spaces between hepatic cells and a lower liver weight/body weight ratio than control offspring, and increased mTOR expression (p < 0.05). Interestingly, the significant decrease in expression of lipogenic-related genes was dependent on carbohydrate-responsive element-binding protein, despite the increased expression of sterol regulatory element-binding protein 1 (SREBP1) (p < 0.05). This study demonstrated increased expression of key metabolic regulators (mTOR and SREBP1), alterations in lipid metabolism, and deficits in hepatic growth in the offspring of FR-treated dams.
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Affiliation(s)
- Sangmi Lee
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul 07985, Korea.
- Department of Molecular Medicine and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul 07985, Korea.
| | - Young-Ah You
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul 07985, Korea.
| | - Eun Jin Kwon
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul 07985, Korea.
| | - Sung-Chul Jung
- Department of Biochemistry, Ewha Womans University Medical School, Seoul 07985, Korea.
| | - Inho Jo
- Department of Molecular Medicine, Ewha Womans University Medical School, Seoul 07985, Korea.
| | - Young Ju Kim
- Department of Obstetrics and Gynecology and Ewha Medical Research Institute, Ewha Womans University Medical School, Seoul 07985, Korea.
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Abstract
The association of preterm birth with obesity and metabolic syndrome later in life is well established. Although the biological mechanism for this association is poorly understood, epigenetic alterations of metabolic-related genes in early life may have important roles in metabolic dysfunction. Thus, we investigated the associations of DNA methylations of melanocortin 4 receptor (MC4R) and hepatocyte nuclear factor 4 alpha (HNF4α) with metabolic profiles in cord blood of term and preterm infants.We measured metabolic profiles in cord blood samples of 85 term and 85 preterm infants. DNA methylation and mRNA expression levels of MC4R and HNF4α in cord blood cells were quantified using pyrosequencing and real-time PCR. Triglyceride (TG) levels were grouped by percentile as low (<10th percentile), mid (11th-89th percentiles), and high (>90th percentile). A multiple linear regression model was used to assess the differential effects of DNA methylation on metabolic indices in cord blood between term and preterm infants.The beta-coefficients for associations between TG levels and methylation statuses of MC4R-CpG3 and HNF4α-CpG2 in the P1 promoter differed significantly between term and preterm infants (P = 0.04 and P = 0.003, respectively). DNA methylation statuses of MC4R-CpG3 and HNF4α-CpG2 in the P1 promoter were significantly lower in preterm infants in the high-TG group compared with those in the mid- and low-TG groups (P = 0.01). Notably, preterm infants in the high-TG group had higher TG levels in cord blood than term infants in the high-TG group (60.49 vs 54.57 mg/dL). In addition, MC4R and HNF4α expression levels were higher in preterm infants than in term infants (P < 0.05).Epigenetic alterations of the newly identified genes MC4R and HNF4α in early life might contribute to metabolic profile changes, especially increased TG levels, in the cord blood of preterm infants.
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Affiliation(s)
- Eun Jin Kwon
- Department of Obstetrics and Gynecology
- Department of Occupational and Environmental Medicine
| | | | | | | | - Su Jin Cho
- Department of Pediatrics, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Eun Hee Ha
- Department of Occupational and Environmental Medicine
| | - Young Ju Kim
- Department of Obstetrics and Gynecology
- Correspondence: Young Ju Kim, Department of Obstetrics and Gynecology, School of Medicine, Ewha Womans University, 1071 Anyangcheon-ro, Yangcheon-ku, Seoul 158-710, Republic of Korea (e-mail: )
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You YA, Son GH, Kwon EJ, Park MH, Lee KY, Kim YJ. New insight into the analysis of amniotic fluid microflora using 16S rRNA gene sequencing. JMM Case Rep 2016. [DOI: 10.1099/jmmcr.0.005021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Young-Ah You
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul, 158-710, Korea
| | - Ga-Hyun Son
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Eun Jin Kwon
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea
| | - Mi Hye Park
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea
| | - Keun-Young Lee
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Young Ju Kim
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul, 158-710, Korea
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea
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Yoo JY, Rho M, You YA, Kwon EJ, Kim MH, Kym S, Jee YK, Kim YK, Kim YJ. 16S rRNA gene-based metagenomic analysis reveals differences in bacteria-derived extracellular vesicles in the urine of pregnant and non-pregnant women. Exp Mol Med 2016; 48:e208. [PMID: 26846451 PMCID: PMC4892867 DOI: 10.1038/emm.2015.110] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 10/07/2015] [Accepted: 10/08/2015] [Indexed: 02/08/2023] Open
Abstract
Recent evidence has indicated that bacteria-derived extracellular vesicles (EVs) are important for host–microbe communication. The aims of the present study were to evaluate whether bacteria-derived EVs are excreted via the urinary tract and to compare the composition of bacteria-derived EVs in the urine of pregnant and non-pregnant women. Seventy-three non-pregnant and seventy-four pregnant women were enrolled from Dankook University and Ewha Womans University hospitals. DNA was extracted from urine EVs after EV isolation using the differential centrifugation method. 16S ribosomal RNA (16S rRNA) gene sequencing was performed using high-throughput 454 pyrosequencing after amplification of the V1–V3 region of the 16S rDNA. The composition of 13 taxa differed significantly between the pregnant and non-pregnant women. At the genus level, Bacillus spp. EVs were more significantly enriched in the urine of the pregnant women than in that of the non-pregnant women (45.61% vs 0.12%, respectively). However, Pseudomonas spp. EVs were more dominant in non-pregnant women than in pregnant women (13.2% vs 4.09%, respectively). Regarding the compositional difference between pregnant women with normal and preterm delivery, EVs derived from Ureaplasma spp. and the family Veillonellaceae (including Megasphaera spp.) were more abundant in the urine of preterm-delivered women than in that of women with normal deliveries. Taken together, these data showed that Bacillus spp. EVs predominate in the urine of pregnant women, whereas Pseudomonas spp. EVs predominate in the urine of non-pregnant women; this suggests that Bacillus spp. EVs might have an important role in the maintenance of pregnancy.
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Affiliation(s)
- Jae Young Yoo
- Department of Obstetrics and Gynecology, School of Medicine and Ewha Medical Institute, Ewha Womans University, Ewha Medical Center, Seoul, South Korea.,National Agency for Breeding Stock Improvement, National Institute of Animal Science, Cheonan, Korea
| | - Mina Rho
- Department of Computer Engineering, Hanyang University, Seoul, South Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, School of Medicine and Ewha Medical Institute, Ewha Womans University, Ewha Medical Center, Seoul, South Korea
| | - Eun Jin Kwon
- Department of Obstetrics and Gynecology, School of Medicine and Ewha Medical Institute, Ewha Womans University, Ewha Medical Center, Seoul, South Korea
| | - Min-Hye Kim
- Department of Internal Medicine, School of Medicine, Ewha Womans University, Seoul, South Korea
| | - Sungmin Kym
- Department of Internal Medicine, Inje University College of Medicine, Busan, South Korea
| | - Young-Koo Jee
- Department of Internal Medicine, College of Medicine, Dankook University, Cheonan, South Korea
| | - Yoon-Keun Kim
- Department of Medicine, School of Medicine, Ewha Womans University and Ewha Institute of Convergence Medicine, Ewha Medical Center, Seoul, South Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, School of Medicine and Ewha Medical Institute, Ewha Womans University, Ewha Medical Center, Seoul, South Korea
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Son GH, You YA, Kwon EJ, Lee KY, Kim YJ. Comparative Analysis of Midtrimester Amniotic Fluid Cytokine Levels to Predict Spontaneous Very Pre-term Birth in Patients with Cervical Insufficiency. Am J Reprod Immunol 2015; 75:155-61. [PMID: 26589553 DOI: 10.1111/aji.12451] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 10/16/2015] [Indexed: 01/16/2023] Open
Abstract
PROBLEM Few studies have investigated the roles of cytokines and chemokines in women with cervical insufficiency, and those that have done so evaluated only a limited number of cytokines in amniotic fluid. METHOD OF STUDY A retrospective cohort study enrolled 71 patients undergoing physical examination-indicated cerclage to determine whether expanded amniotic fluid cytokine levels predict spontaneous very pre-term birth (≤32 weeks of gestation) in patients with cervical insufficiency. Analysis of multiple cytokines and chemokines was performed with the multiplex immunoassay. RESULTS Sixty-seven amniotic fluid samples were available for analysis and assayed for 15 cytokines. Thirty-eight (56.7%) patients delivered pre-term. Of these, 26 (38.8%) were spontaneous very pre-term births. Most cytokine levels were significantly increased in the amniotic fluid from the study group when compared with those from controls. The levels of interleukin-1β (IL-1β), IL- 6, IL- 7, IL-15, IL-17α, tumour necrosis factor-α (TNF-α), MIP-1α, and MIP-1β were higher in patients with a very pre-term delivery than in those with a late pre-term delivery. IL-1β, IL-6, IL-7, IL-17α, TNF-α, and cervical dilation were independently associated with a very pre-term birth. CONCLUSION Intra-amniotic inflammation may contribute to cervical insufficiency, and the severity of inflammation is associated with a very pre-term birth in women with cervical insufficiency.
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Affiliation(s)
- Ga-Hyun Son
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Young-Ah You
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul, Korea
| | - Eun-Jin Kwon
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
| | - Keun-Young Lee
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Hallym University College of Medicine, Kangnam Sacred Heart Hospital, Seoul, Korea
| | - Young Ju Kim
- Medical Research Institute, School of Medicine, Ewha Womans University, Seoul, Korea.,Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, Korea
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You YA, Lee JH, Kwon EJ, Yoo JY, Kwon WS, Pang MG, Kim YJ. Proteomic Analysis of One-carbon Metabolism-related Marker in Liver of Rat Offspring. Mol Cell Proteomics 2015; 14:2901-9. [PMID: 26342040 PMCID: PMC4638034 DOI: 10.1074/mcp.m114.046888] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Indexed: 01/17/2023] Open
Abstract
Maternal food intake has a significant effect on the fetal environment, and an inadequate maternal diet may result in intrauterine growth restriction. Intrauterine growth restriction newborn rat pups nursed by normal diet-fed dams exhibited rapid catch-up growth, which plays a critical role in the risk for metabolic and cardiovascular disease in later life. Specifically, one-carbon metabolism in the liver plays a critical role in placental and fetal growth. Impaired functioning of one-carbon metabolism is associated with increased homocysteine levels. In this study, we applied a comprehensive proteomic approach to identify differential expression of proteins related to one-carbon metabolism in the livers of rat offspring as an effect of maternal food restriction during gestation. Data are available via ProteomeXchange with identifier PXD002578. We determined that betaine-homocysteine S-methyltransferase 1, methylenetetrahydrofolate dehydrogenase 1, and ATP synthase subunit beta mitochondrial (ATP5B) expression levels were significantly reduced in the livers of rat offspring exposed to maternal food restriction during gestation compared with in the offspring of rats fed a normal diet (p < 0.05). Moreover, the expression levels of betaine-homocysteine S-methyltransferase 1, methylenetetrahydrofolate dehydrogenase 1, and ATP synthase subunit beta mitochondrial were negatively correlated with serum homocysteine concentration in male offspring exposed to maternal food restriction during gestation and normal diet during lactation. However, in female offspring only expression levels of methylenetetrahydrofolate dehydrogenase 1 were negatively correlated with homocysteine concentration. This study shows that maternal food restriction during late gestation and normal diet during lactation lead to increased homocysteine concentration through disturbance of one-carbon metabolism in the livers of male offspring. This suggests that male offspring have an increased gender-specific susceptibility to disease in later life through fetal programming.
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Affiliation(s)
- Young-Ah You
- From the ‡Medical Research Institute, School of Medicine, Ewha Womans University, Seoul 158-710, Korea
| | - Ji Hye Lee
- §Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea
| | - Eun Jin Kwon
- §Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea
| | - Jae Young Yoo
- From the ‡Medical Research Institute, School of Medicine, Ewha Womans University, Seoul 158-710, Korea
| | - Woo-Sung Kwon
- ¶Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Korea
| | - Myung-Geol Pang
- ¶Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, Korea
| | - Young Ju Kim
- From the ‡Medical Research Institute, School of Medicine, Ewha Womans University, Seoul 158-710, Korea; §Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, 158-710, Korea;
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Lee JH, Yoo JY, You YA, Kwon WS, Lee SM, Pang MG, Kim YJ. Proteomic analysis of fetal programming-related obesity markers. Proteomics 2015; 15:2669-77. [PMID: 25886259 DOI: 10.1002/pmic.201400359] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 02/16/2015] [Accepted: 04/14/2015] [Indexed: 12/14/2022]
Abstract
The objectives of this study were to analyze fetal programming in rat brain using proteomic analysis and to identify fetal programming-related obesity markers. Sprague-Dawley rats were divided into four feeding groups: (i) the Ad Libitum (AdLib)/AdLib group was given a normal diet during pregnancy and the lactation period; (ii) the AdLib/maternal food restriction group (FR) was subjected to 50% FR during the lactation period; (iii) the FR/AdLib group was subjected to 50% FR during pregnancy; and (iv) the FR/FR group was subjected to 50% FR during pregnancy and the lactation period. Offspring from each group were sacrificed at 3 weeks of age and whole brains were dissected. To obtain a maximum number of protein markers related to obesity, 2DE and Pathway Studio bioinformatics analysis were performed. The identities of the markers among the selected and candidate proteins were confirmed by Western blotting and immunohistochemistry. Proteomic and bioinformatics analyses revealed that expression of ubiquitin carboxy-terminal hydrolase L1 (UCHL1) and Secernin 1 (SCRN1) were significantly different in the FR/AdLib group compared with the AdLib/AdLib group for both male and female offspring. These findings suggest that UCHL1 and SCRN1 may be used as fetal programming-related obesity markers.
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Affiliation(s)
- Ji Hye Lee
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, South Korea
| | - Jae Young Yoo
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, South Korea
| | - Young-Ah You
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, South Korea
| | - Woo-Sung Kwon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, South Korea
| | - Sang Mi Lee
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, South Korea
| | - Myung-Geol Pang
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456-756, South Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul, South Korea
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Kim J, Kwon WS, Rahman MS, Lee JS, Yoon SJ, Park YJ, You YA, Pang MG. Effect of sodium fluoride on male mouse fertility. Andrology 2015; 3:544-51. [PMID: 25854509 DOI: 10.1111/andr.12006] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/04/2014] [Accepted: 12/11/2014] [Indexed: 11/28/2022]
Abstract
Sodium fluoride (NaF), an environmental pollutant, has been tested for its impact on fertility in several species of laboratory animals. A literature demonstrated that NaF adversely affects sperm motility, morphology, capacitation, and the acrosome reaction. However, the molecular mechanisms underlying these alterations have not yet been elucidated. Therefore, present study was designed to evaluate the regulatory pathways involved in the effect of NaF on sperm function and fertilization. In this in vitro study, mouse spermatozoa were incubated with a range of concentrations (2.5, 5, and 10 mm) of NaF for 90 min in media that support in vitro fertilization. Our results showed that NaF was associated with reduced intracellular ATP generation, motility, and motion kinematics. Likewise, short-term exposure of spermatozoa to NaF significantly reduced the intracellular calcium concentration, protein kinase-A activity, and tyrosine phosphorylation of sperm proteins, which were associated with a significant decrease in the rate of capacitation and the acrosome reaction. Finally, NaF significantly reduced the fertilization and blastocyst formation during early embryonic development. On the basis of these results, we propose that NaF reduces sperm motility, capacitation, and the acrosome reaction leading to poor fertilization and suppressed embryonic development.
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Affiliation(s)
- Jin Kim
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Woo-Sung Kwon
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Md Saidur Rahman
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - June-Sub Lee
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Sung-Jae Yoon
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Yoo-Jin Park
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Young-Ah You
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Korea
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You YA, Park YJ, Kwon WS, Yoon SJ, Ryu BY, Kim YJ, Pang MG. Increased frequency of aneuploidy in long-lived spermatozoa. PLoS One 2014; 9:e114600. [PMID: 25490252 PMCID: PMC4260881 DOI: 10.1371/journal.pone.0114600] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 11/12/2014] [Indexed: 11/18/2022] Open
Abstract
Aneuploidy commonly causes spontaneous abortions, stillbirths, and aneuploid births in humans. Notably, the majority of sex chromosome aneuploidies in live births have a paternal origin. An increased frequency of aneuploidy is also associated with male infertility. However, the dynamics and behavior of aneuploid spermatozoa during fertilization in humans have not been studied in detail. Therefore, we compared the frequency of aneuploidy and euploidy in live spermatozoa from normozoospermic men over a 3-day period. To assess the dynamics and behavior of aneuploid spermatozoa, we simultaneously evaluated sperm viability using the hypo-osmotic swelling test and sperm aneuploidy using fluorescence in situ hybridization. Whereas the frequency of viable euploid spermatozoa significantly decreased over 3 days, the frequency of viable spermatozoa with aneuploidy interestingly showed a time-dependent increase. In addition, spermatozoa with abnormal sex chromosomes survived longer. To compared with spermatozoa with other swelling patterns, those with tail-tip swelling patterns had a lower frequency of aneuploidy at all time points. This study revealed the novel finding that the frequency of aneuploid spermatozoa with fertilization capability significantly increased compared to that of euploid spermatozoa over 3 days, suggesting that aneuploid spermatozoa can survive longer than euploid spermatozoa and have a greater chance of fertilizing oocytes.
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Affiliation(s)
- Young-Ah You
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Yoo-Jin Park
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Woo-Sung Kwon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Sung-Jae Yoon
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Buom-Yong Ryu
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
| | - Young Ju Kim
- Department of Obstetrics and Gynecology, Ewha Womans University, Seoul 158–710, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science and Technology, Chung-Ang University, Anseong, Gyeonggi-Do 456–756, Republic of Korea
- * E-mail:
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Kwon WS, Rahman MS, Lee JS, Kim J, Yoon SJ, Park YJ, You YA, Hwang S, Pang MG. A comprehensive proteomic approach to identifying capacitation related proteins in boar spermatozoa. BMC Genomics 2014; 15:897. [PMID: 25315394 PMCID: PMC4287242 DOI: 10.1186/1471-2164-15-897] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Accepted: 10/06/2014] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Mammalian spermatozoa must undergo capacitation, before becoming competent for fertilization. Despite its importance, the fundamental molecular mechanisms of capacitation are poorly understood. Therefore, in this study, we applied a proteomic approach for identifying capacitation-related proteins in boar spermatozoa in order to elucidate the events more precisely. 2-DE gels were generated from spermatozoa samples in before- and after-capacitation. To validate the 2-DE results, Western blotting and immunocytochemistry were performed with 2 commercially available antibodies. Additionally, the protein-related signaling pathways among identified proteins were detected using Pathway Studio 9.0. RESULT We identified Ras-related protein Rab-2, Phospholipid hydroperoxide glutathione peroxidase (PHGPx) and Mitochondrial pyruvate dehydrogenase E1 component subunit beta (PDHB) that were enriched before-capacitation, and NADH dehydrogenase 1 beta subcomplex 6, Mitochondrial peroxiredoxin-5, (PRDX5), Apolipoprotein A-I (APOA1), Mitochondrial Succinyl-CoA ligase [ADP-forming] subunit beta (SUCLA2), Acrosin-binding protein, Ropporin-1A, and Spermadhesin AWN that were enriched after-capacitation (>3-fold) by 2-DE and ESI-MS/MS. SUCLA2 and PDHB are involved in the tricarboxylic acid cycle, whereas PHGPx and PRDX5 are involved in glutathione metabolism. SUCLA2, APOA1 and PDHB mediate adipocytokine signaling and insulin action. The differentially expressed proteins following capacitation are putatively related to sperm functions, such as ROS and energy metabolism, motility, hyperactivation, the acrosome reaction, and sperm-egg interaction. CONCLUSION The results from this study elucidate the proteins involved in capacitation, which may aid in the design of biomarkers that can be used to predict boar sperm quality.
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Affiliation(s)
- Woo-Sung Kwon
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Md Saidur Rahman
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - June-Sub Lee
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Jin Kim
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Sung-Jae Yoon
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Yoo-Jin Park
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Young-Ah You
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
| | - Seongsoo Hwang
- />Animal Biotechnology Division, National Institute of Animal Science, RDA, Suwon, Gyeonggi-do, 441-706 Republic of Korea
| | - Myung-Geol Pang
- />Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, 456-756 Republic of Korea
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Lee JS, Park YJ, Kim J, Rahman MS, Kwon WS, Yoon SJ, You YA, Pang MG. Effect of Arp2/3 Complex on Sperm Motility and Membrane Structure in Bovine. ACTA ACUST UNITED AC 2013. [DOI: 10.12749/rdb.2013.37.4.169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Abstract
Ubiquinol-cytochrome-c reductase core protein 2 (UQCRC2) is a component of ubiquinol-cytochrome c reductase complex that is known to correlate with male fertility via spermatogenesis. Simultaneously, nutlin-3a is a small molecule antagonist of mouse double minute 2 repressor (MDM2), activate p53 and induce apoptosis responsible for spermatogenesis. To date, however there are no known effects of nutlin-3a on reproduction. Therefore, present study was designed to investigate the effect of nutlin-3a on male fertility via UQCRC2. In this in vitro trial with mice spermatozoa, we utilized CASA, CTC staining, ATP assay, western blotting, and IVF to measure the main study outcome. The short-term exposure of spermatozoa in nutlin-3a decreases sperm motion kinematics, intracellular ATP production, capacitation, the acrosome reaction, UQCRC2, and tyrosine phosphorylation (TYP) of sperm proteins in a dose-dependent manner. Notably, the decreased UQCRC2 and TYP were associated with reduced sperm kinematics, ATP production, and capacitation, which ultimately led to adverse effects on male fertility such as poor fertilization rates and embryo development. Thus, nutlin-3a may be considered as a potential male contraceptive agent due to its ability to decrease fertility secondary to changes in overall sperm physiology and embryonic development. However, the results of this preliminary study have to be confirmed by additional independent trial.
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Affiliation(s)
- Kamla Kant Shukla
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
| | - Woo-Sung Kwon
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
| | - Md Saidur Rahman
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
| | - Yoo-Jin Park
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
| | - Young-Ah You
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology, Chung-Ang University, Anseong, Gyeonggi-do, South Korea
- * E-mail:
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Affiliation(s)
- Yoo-Jin Park
- Department
of Animal Science
and Technology, Chung-Ang University, Anseong, Gyeonggi-do 456-756, Korea
| | - Jin Kim
- Department
of Animal Science
and Technology, Chung-Ang University, Anseong, Gyeonggi-do 456-756, Korea
| | - Young-Ah You
- Department
of Animal Science
and Technology, Chung-Ang University, Anseong, Gyeonggi-do 456-756, Korea
| | - Myung-Geol Pang
- Department
of Animal Science
and Technology, Chung-Ang University, Anseong, Gyeonggi-do 456-756, Korea
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Park YJ, Mohamed ESA, Kwon WS, You YA, Ryu BY, Pang MG. Xenoestrogenic chemicals effectively alter sperm functional behavior in mice. Reprod Toxicol 2011; 32:418-24. [PMID: 22036770 DOI: 10.1016/j.reprotox.2011.09.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 08/30/2011] [Accepted: 09/28/2011] [Indexed: 01/03/2023]
Abstract
Xenoestrogenic compounds (XCs) can disrupt endogenous hormone function and affect sperm function by binding to receptors on sperm membrane. Albeit spermatozoa are potentially a useful model for screening estrogenic activities of endocrine disruptors, high-quality in vitro test system that examination of the XCs effects on sperm function is required. The objective of this study was to compare the effects of XCs (genistein and 4-tert-octylphenol) to those of steroids (estrogen and progesterone) and heparin on in vitro capacitation and acrosome reaction (AR) in mouse spermatozoa. Mouse spermatozoa were incubated with various concentrations (0.001-100 μM) of each chemical for 15 or 30 min, and then capacitation and AR were assessed using chlortetracycline. All chemicals studied effectively alter capacitation and/or AR in mouse spermatozoa with different manner. Therefore, we believed that our system will provide a good in vitro model system to characterize the physiological effect of XCs especially when compared with steroids.
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Affiliation(s)
- Yoo-Jin Park
- Department of Animal Science and Technology, School of Bioresource and Bioscience, Chung-Ang University, Ansung, Gyeonggi-Do, Republic of Korea.
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Mohamed ESA, Park YJ, Song WH, Shin DH, You YA, Ryu BY, Pang MG. Xenoestrogenic compounds promote capacitation and an acrosome reaction in porcine sperm. Theriogenology 2011; 75:1161-9. [DOI: 10.1016/j.theriogenology.2010.11.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 11/23/2010] [Accepted: 11/23/2010] [Indexed: 01/26/2023]
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Oh SA, Park YJ, You YA, Mohamed EA, Pang MG. Capacitation status of stored boar spermatozoa is related to litter size of sows. Anim Reprod Sci 2010; 121:131-8. [PMID: 20573460 DOI: 10.1016/j.anireprosci.2010.05.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2010] [Revised: 03/31/2010] [Accepted: 05/31/2010] [Indexed: 11/29/2022]
Abstract
Semen parameters can be considered useful predictors of sperm fertility. The objective of this study was to address the question of whether differences in in vivo fertility after the use of different ejaculates could be predicted using sperm kinematics, capacitation status, and sperm penetration ability under commercial pig production conditions. The percentage of capacitated sperm, as assessed by chlortetracycline (CTC) staining, was positively correlated with litter size (p<0.01). Our data suggest that litter size increases in proportion to the number of capacitated spermatozoa. When all semen parameters (kinematics, sperm capacitation status, and sperm penetration ability) and litter size were included in a multiple linear regression analysis, significant associations were found between the percentage of capacitated sperm (B-type), the sperm fertility index as assessed by a sperm penetration assay (SPA), and litter size. This relationship between capacitated sperm and litter size, however, was more predictive for smaller litter groups than larger ones. We found that the percentage of B-type sperm was significantly correlated with historic average litter size. However, there was no significant correlation between the percentage of B-type sperm and historic farrowing rates. To determine the normal range for B-type sperm, the lower limits were established as 30% for small litters (<8 piglets) and 35% for large litters. The overall accuracy of the assay was 92% and 83% for small and large litters, respectively. These results indicate that capacitation status as measured by CTC staining is a useful predictor of sperm fertility, equivalent to SPA. Moreover, original capacitation status exhibited better predictive ability for small litters than for large ones. Therefore, subfertile boars can be identified primarily by capacitation status.
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Affiliation(s)
- S A Oh
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Ansung, Gyeonggi-Do, Republic of Korea
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Abstract
The prediction of sperm fertility is of paramount importance for breeding animals. Multiple laboratory approaches have been developed for this purpose, but they have yielded equivocal results. The objective of this study was to develop and standardize to a method for predicting fertility in vivo in boars using the in vitro penetration assay. To increase the sensitivity and reduce false-negative results of the assay, each step in the procedure was standardized and quality control was applied. Maximum penetration of hamster zona-free oocytes and immature porcine oocytes was obtained using heparin-treated sperm cells. Hamster zona-free oocytes showed a significantly higher penetration than immature porcine oocytes. To eliminate interassay variability, two frozen bull semen samples were applied. All possible variables related to the female were excluded. The SPA (sperm penetration assay using zona-free oocytes) result showed significant correlation with historic average litter size but had no significant correlation with farrowing rates. To determine the normal range for the SPA, lower limits of the sperm fertility index were established as 1.2 for the small litter sizes (<8 piglets) and 2.5 for the large litter sizes. The overall accuracy was 92 and 96% respectively, for the small and large litter sizes. Our laboratory has standardized the procedure for the SPA, resulting in greatly increased sensitivities for small and large litter sizes. The protocol increases the ability to discriminate between good and poor fertility groups and it was highly effective at ranking 24 boars by litter size into large and small litter groups.
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Affiliation(s)
- Shin-Ae Oh
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Ansung, Gyeonggi-Do 456-756, Korea
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Pang MG, You YA, Park YJ, Oh SA, Kim DS, Kim YJ. Numerical chromosome abnormalities are associated with sperm tail swelling patterns. Fertil Steril 2009; 94:1012-20. [PMID: 19505688 DOI: 10.1016/j.fertnstert.2009.04.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 04/07/2009] [Accepted: 04/13/2009] [Indexed: 10/20/2022]
Abstract
OBJECTIVE To assess whether the differential sperm tail swelling patterns observed following hypo-osmotic shock are useful in discriminating normal sperm from aneuploid sperm. DESIGN Prospective study. SETTING University research setting. INTERVENTION(S) Fluorescence in situ hybridization (FISH) was combined with hypo-osmotic swelling for a simultaneous assessment of aneuploidy and viability in human spermatozoa. MAIN OUTCOME MEASURE(S) FISH for chromosomes 1, 13, 18, 21, X, and Y after hypo-osmotic stress was used to investigate the distribution of sperm aneuploidy related to sperm-tail swelling patterns. A total of 16,473 sperm cells were scored from three normal fertile donors and six oligoasthenoteratozoospermic (OAT) patients. RESULT(S) There was a 17.2-fold decrease in the frequency of total aneuploidy in the sperm with a tail-tip swelling pattern compared with the initial nonselected sperm in the OAT patients. Strikingly, when the sperm with tail-tip swelling patterns were screened from the patients, the frequency of total aneuploidy was actually lower by a factor of four than in the nonselected sperm from fertile donors. CONCLUSION(S) The sperm cells with tail-tip swelling patterns are related to a low frequency of aneuploidy.
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Affiliation(s)
- Myung-Geol Pang
- Department of Animal Science and Technology and BET Research Institute, Chung-Ang University, Ansung, Gyeonggi-Do, South Korea.
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Abstract
PURPOSE To assess the efficacy of intraoperative mitomycin C (MMC) in external dacryocystorhinostomy (EXT-DCR). METHODS Forty-six cases (50 lacrimal drainage systems [LDS]) with nasolacrimal duct obstruction were randomized into three groups. In the control group, a standard EXT-DCR procedure was performed. In the two MMC groups, a piece of cotton soaked with 0.2 mg/ml MMC (group 1) or 0.5 mg/ml MMC (group 2) was applied to the nasal mucosa and the mucosa of the lacrimal sac in the osteotomy site for 5 minutes. RESULTS The dacryocystorhinostomy in all patients was patent by irrigation 2 to 3 weeks postoperatively. After a mean follow-up interval of 35.2 +/- 5.3 months, the dacryocystorhinostomy was patent in 15 (83%) of 18 LDS in the control group, 16 (100%) of 16 LDS in group 1, and 15 (94%) of 16 LDS in group 2. The mean ostium sizes were 22.2 +/- 5.0 mm2 in group 1, 20.6 +/- 4.5 mm2 in group 2, and 13.2 +/- 2.7 mm2 in group 3 at the final follow-up visit; the difference between the patients treated with MMC and the control group was statistically significant. There was no statistically significant difference between the two MMC groups, however. No surgical complications occurred. CONCLUSIONS Intraoperative MMC in DCR is a safe and effective adjuvant that helps achieve favorable long-term success rates.
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Affiliation(s)
- Y A You
- Department of Ophthalmology, First Affiliated Hospital, Wenzhou Medical College, China
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