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Lee CI, Huang CC, Lee TH, Chen HH, Cheng EH, Lin PY, Yu TN, Chen CI, Chen CH, Lee MS. Associations between the artificial intelligence scoring system and live birth outcomes in preimplantation genetic testing for aneuploidy cycles. Reprod Biol Endocrinol 2024; 22:12. [PMID: 38233926 PMCID: PMC10792866 DOI: 10.1186/s12958-024-01185-y] [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: 07/29/2023] [Accepted: 01/12/2024] [Indexed: 01/19/2024] Open
Abstract
BACKGROUND Several studies have demonstrated that iDAScore is more accurate in predicting pregnancy outcomes in cycles without preimplantation genetic testing for aneuploidy (PGT-A) compared to KIDScore and the Gardner criteria. However, the effectiveness of iDAScore in cycles with PGT-A has not been thoroughly investigated. Therefore, this study aims to assess the association between artificial intelligence (AI)-based iDAScore (version 1.0) and pregnancy outcomes in single-embryo transfer (SET) cycles with PGT-A. METHODS This retrospective study was approved by the Institutional Review Board of Chung Sun Medical University, Taichung, Taiwan. Patients undergoing SET cycles (n = 482) following PGT-A at a single reproductive center between January 2017 and June 2021. The blastocyst morphology and morphokinetics of all embryos were evaluated using a time-lapse system. The blastocysts were ranked based on the scores generated by iDAScore, which were defined as AI scores, or by KIDScore D5 (version 3.2) following the manufacturer's protocols. A single blastocyst without aneuploidy was transferred after examining the embryonic ploidy status using a next-generation sequencing-based PGT-A platform. Logistic regression analysis with generalized estimating equations was conducted to assess whether AI scores are associated with the probability of live birth (LB) while considering confounding factors. RESULTS Logistic regression analysis revealed that AI score was significantly associated with LB probability (adjusted odds ratio [OR] = 2.037, 95% confidence interval [CI]: 1.632-2.542) when pulsatility index (PI) level and types of chromosomal abnormalities were controlled. Blastocysts were divided into quartiles in accordance with their AI score (group 1: 3.0-7.8; group 2: 7.9-8.6; group 3: 8.7-8.9; and group 4: 9.0-9.5). Group 1 had a lower LB rate (34.6% vs. 59.8-72.3%) and a higher rate of pregnancy loss (26% vs. 4.7-8.9%) compared with the other groups (p < 0.05). The receiver operating characteristic curve analysis verified that the iDAScore had a significant but limited ability to predict LB (area under the curve [AUC] = 0.64); this ability was significantly weaker than that of the combination of iDAScore, type of chromosomal abnormalities, and PI level (AUC = 0.67). In the comparison of the LB groups with the non-LB groups, the AI scores were significantly lower in the non-LB groups, both for euploid (median: 8.6 vs. 8.8) and mosaic (median: 8.0 vs. 8.6) SETs. CONCLUSIONS Although its predictive ability can be further enhanced, the AI score was significantly associated with LB probability in SET cycles. Euploid or mosaic blastocysts with low AI scores (≤ 7.8) were associated with a lower LB rate, indicating the potential of this annotation-free AI system as a decision-support tool for deselecting embryos with poor pregnancy outcomes following PGT-A.
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Affiliation(s)
- Chun-I Lee
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chun-Chia Huang
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Tsung-Hsien Lee
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Hsiu-Hui Chen
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - En-Hui Cheng
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Pin-Yao Lin
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Tzu-Ning Yu
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
| | - Chung-I Chen
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan
| | - Chien-Hong Chen
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan.
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan.
| | - Maw-Sheng Lee
- Division of Infertility, Lee Women's Hospital, Taichung, Taiwan.
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan.
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
- Department of Post-Baccalaureate Medicine, National Chung Hsing University, Taichung, Taiwan.
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Yu TN, Cheng EH, Lin YP, Chen YC, Huang CC, Lee TH, Lee MS. Significantly shortened telomere length and altered androgen receptor level in cumulus cells from women with polycystic ovary syndrome. Taiwan J Obstet Gynecol 2023; 62:845-851. [PMID: 38008503 DOI: 10.1016/j.tjog.2023.07.035] [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] [Accepted: 07/20/2023] [Indexed: 11/28/2023] Open
Abstract
OBJECTIVE The aim of this study was to investigate the correlation between hormone receptor levels and telomere length (TL) in infertile women with and without polycystic ovary syndrome (PCOS). MATERIALS AND METHODS This prospective cohort study recruited a total of 431 cumulus oocyte complex (COC) from 88 infertile women between July 2012 and June 2014. The participants were divided into three groups: young age (<38 years, n = 42 and 227 COC), advanced age (≥38 years, n = 33 and 107 COC) and PCOS patients (n = 13 and 97 COC). Cumulus cells were collected from individual follicle during oocyte pick-up, and the mRNA levels of hormone receptors and TL were measured using real-time PCR. RESULTS The cumulus cells of PCOS patients demonstrated lower mRNA levels of LH receptor (75.57 ± 138.10 vs. 171.07 ± 317.68; p < 0.01) and androgen receptor (1.13 ± 1.52 vs. 4.08 ± 9.57; p < 0.01), as well as a shorter TL (2.39 ± 2.58 vs. 3.96 ± 4.72; p < 0.01) compared to those of the young age group. In the young age group, only androgen receptor mRNA level showed a significant association with TL (rho = 0.148, p = 0.026), while FSH receptor mRNA level was the only factor associated with TL (rho = 0.247, p = 0.015) in PCOS patients. For advanced-aged patients, no significant relationship was observed between hormone receptor mRNA levels and TL. Alternative splicing of androgen receptors was identified in some PCOS patients but not in young age controls. CONCLUSION The findings suggest that the androgen receptor level and function may be altered in the cumulus cells of PCOS patients, leading to a shorter TL in cumulus cells in PCOS patients.
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Affiliation(s)
- Tzu-Ning Yu
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - En-Hui Cheng
- Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - Yi-Ping Lin
- Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - Yi-Chun Chen
- Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - Chun-Chia Huang
- Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - Tsung-Hsien Lee
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan; Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Maw-Sheng Lee
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan; Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan.
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Yu TN, Cheng EH, Tsai HN, Lin PY, Chen CH, Huang CC, Lee TH, Lee MS. Assessment of Telomere Length and Mitochondrial DNA Copy Number in Granulosa Cells as Predictors of Aneuploidy Rate in Young Patients. J Clin Med 2022; 11:jcm11071824. [PMID: 35407431 PMCID: PMC9000104 DOI: 10.3390/jcm11071824] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 02/17/2022] [Revised: 03/13/2022] [Accepted: 03/23/2022] [Indexed: 01/10/2023] Open
Abstract
Background: To identify the correlation among female age, cellular aging markers, and aneuploidy rate in in vitro fertilization (IVF) and the preimplantation genetic test for aneuploidy (PGT-A) cycles. Methods: This is a prospective cohort study recruiting 110 infertile women between August 2017 and July 2018. They were divided into young-age (<38 years, n = 60) and advanced-age (≥38 years, n = 50) groups. Peripheral leukocytes were assessed, and the granulosa cells were pooled during oocyte pickup. Mitochondrial DNA (mtDNA) copy number and telomere length (TL) were measured using real-time polymerase chain reaction. PGT-A was performed on the NGS platform. Results: mtDNA copy number and TL were positively correlated in both leukocytes (rho = 0.477, p < 0.001) and granulosa cells (rho = 0.361, p < 0.001), but the two parameters in leukocytes were not correlated with those in granulosa cells. In the young-age group, TL in the granulosa cells was the only factor correlated with the aneuploidy rate (rho = −0.283, p = 0.044), whereas in the advanced-age group, age was the main factor (rho = 0.358, p = 0.018). Conclusions: TL in the granulosa cells was negatively correlated with the aneuploidy rate in the young-age group, supporting the application of PGT-A in younger women.
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Affiliation(s)
- Tzu-Ning Yu
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - En-Hui Cheng
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - Han-Ni Tsai
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - Pin-Yao Lin
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - Chien-Hong Chen
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - Chun-Chia Huang
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
| | - Tsung-Hsien Lee
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- Correspondence: (T.-H.L.); (M.-S.L.)
| | - Maw-Sheng Lee
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan;
- Division of Infertility, Lee Women’s Hospital, Taichung 40652, Taiwan; (E.-H.C.); (H.-N.T.); (P.-Y.L.); (C.-H.C.); (C.-C.H.)
- Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- Correspondence: (T.-H.L.); (M.-S.L.)
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Chang YE, Yu TN, Chen CH, Chou SY, Lu BJ, Chen CH. The debated role of bariatric surgery in improving in-vitro fertilization outcomes in morbidly-obese infertile women-a case report and brief overview. Taiwan J Obstet Gynecol 2021; 60:935-937. [PMID: 34507679 DOI: 10.1016/j.tjog.2021.07.029] [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] [Accepted: 07/16/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Obesity has a negative impact on in-vitro fertilization (IVF) outcomes, and obese women who plan IVF treatments are often encouraged to pursue weight reduction. Bariatric surgery is an effective strategy for the treatment of morbidly obese women. The current case report is to investigate the impact of bariatric surgery on IVF outcome in a morbidly obese woman with subfertility. CASE REPORT A 37-year-old, morbidly obese woman with subfertility was indicated for IVF treatment. Due to her high body mass index (47.9 kg/m2), she was advised to lose weight; initial failure at conservative measures of weight loss prompted her to undergo bariatric surgery, combined with post-operative lifestyle change, prior to receiving IVF treatment. The woman successfully conceived at the second cycle and delivered twins by cesarean section smoothly at 36 + 3/7 weeks of gestation. Both twins have normal development up to two years of age. CONCLUSIONS Weight reduction mediated by bariatric surgery in subfertile and morbidly obese women can be considered before IVF treatment.
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Affiliation(s)
- Yi-En Chang
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Tzu-Ning Yu
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Division of Infertility Clinic, Lee Women's Hospital, Taichung, Taiwan
| | - Ching-Hui Chen
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Nuwa Fertility Center, Taipei, Taiwan
| | - Szu-Yuan Chou
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Buo-Jia Lu
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
| | - Chi-Huang Chen
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
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Liu YL, Yu TN, Wang PH, Tzeng CR, Chen CH, Chen CH. Could PGT-A pick up true abnormalities that have clinical relevance? Retrospective analysis of 1043 embryos. Taiwan J Obstet Gynecol 2021; 59:496-501. [PMID: 32653119 DOI: 10.1016/j.tjog.2020.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2019] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To determine whether preimplantation genetic testing for aneuploidy (PGT-A) could pick up true abnormalities that have clinical relevance. MATERIALS AND METHODS This was a retrospective cohort study of patients who underwent in vitro fertilization with PGT-A from 2015 to 2017. We evaluated the associations of aneuploidy and mosaicism with maternal age, the chromosome abnormalities present in individual chromosomes, and the effect of embryo sex on the proportion of each type of error in the four chromosomes most frequently affected. RESULT(S) A total of 1043 embryos from 255 patients (mean maternal age = 39 ± 4 years) were included in the initial analysis. Of these, 36% (377/1043) were euploid, 47% (487/1043) were aneuploid, 13% (140/1043) contained mosaicism, and 4% (39/1043) gave no result. We excluded the 39 embryos with no result; thus, 1004 embryos were included in the analysis. Increased aneuploidy was associated with increased maternal age, but the rate of embryo mosaicism was not. A combined analysis of aneuploidy with noncomplex abnormalities and mosaicism showed that chromosomes 22, 21, 16, and 15 were the most frequently involved. Chromosome 22 showed the highest proportion of mosaicism and chromosome 15 showed the highest proportion of aneuploidy. When we included embryo sex in the analysis, embryo sex was associated with these chromosome errors in the most susceptible chromosome, 22. CONCLUSION(S) PGT-A showed that chromosomes 22, 21, 16, and 15 were the most frequently involved among common chromosome abnormalities, comparable with those of published data analyzed from spontaneous abortion. This result suggested that PGT-A could pick up abnormalities that have clinical relevance to spontaneous abortion. Moreover, we identified a role of embryo sex in these chromosomal errors on chromosome 22.
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Affiliation(s)
- Yung-Liang Liu
- Department of Obstetrics and Gynecology, Tri-Service General Hospital, National Defense Medical Center, No. 161, Sec. 6, Minquan E. Rd., Neihu Dist., Taipei, 11490, Taiwan; Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, No. 252, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan
| | - Tzu-Ning Yu
- Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, No. 252, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, No.250, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan
| | - Peng-Hui Wang
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chii-Ruey Tzeng
- Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, No. 252, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, No.250, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan
| | - Ching-Hui Chen
- Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, No. 252, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, No.250, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan.
| | - Chi-Huang Chen
- Division of Infertility, Department of Obstetrics and Gynecology, Taipei Medical University Hospital, No. 252, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, No.250, Wuxing St., Xinyi Dist., Taipei, 11031, Taiwan.
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Chou SY, Chan C, Lee YC, Yu TN, Tzeng CR, Chen CH. Evaluation of adenomyosis after gonadotrophin-releasing hormone agonist therapy using ultrasound post-processing imaging: a pilot study. J Int Med Res 2020; 48:300060520920056. [PMID: 32536293 PMCID: PMC7297488 DOI: 10.1177/0300060520920056] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective We explored a method for the quantitative sonographic analysis of myometrial texture using computer-aided image analysis software to assess outcomes following treatment with gonadotrophin-releasing hormone (GnRH) agonist for adenomyosis in women with infertility. Method Data for patients with ultrasound images of the myometrium obtained at Taipei Medical University Hospital from 1 September 2018 to 5 April 5 2019 were analyzed. Only 10 patients with 20 ultrasound images matched the eligibility criteria. The images were divided into pre-treatment (n = 10) and post-treatment images (n = 10) and quantitative grayscale histograms were obtained from the ultrasound images using publicly available ImageJ computer-aided image analysis software. We analyzed the differences between the pre- and post-treatment images using the Mann–Whitney test and compared the results with outcomes assessed by serum CA-125 levels. Results Image analysis of the grayscale histograms revealed significant differences between before and after treatment. The classification of the myometrium pre-treatment and post-treatment was similar using CA-125 and histogram grayscale analysis. Conclusion Computer-aided image analysis of grayscale histograms of the myometrium obtained from ultrasound images is an alternative method for assessing myometrial conditions after GnRH agonist treatment in patients with adenomyosis.
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Affiliation(s)
- Szu-Yuan Chou
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital,Taipei
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei
| | - Cindy Chan
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital,Taipei
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei
| | - Yu-Chieh Lee
- Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei
| | - Tzu-Ning Yu
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital,Taipei
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei
| | - Chii-Ruey Tzeng
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital,Taipei
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei
| | - Chi-Huang Chen
- Division of Reproductive Medicine, Department of Obstetrics and Gynecology, Taipei Medical University Hospital,Taipei
- Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei
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Liu YL, Yu TN, Chen CH, Wang PH, Chen CH, Tzeng CR. Healthy live births after mosaic blastocyst transfers with the use of next-generation sequencing. Taiwan J Obstet Gynecol 2019; 58:872-876. [DOI: 10.1016/j.tjog.2019.07.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/02/2019] [Indexed: 11/29/2022] Open
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Yu TN, Liu YL, Wang PH, Chen CH, Chen CH, Tzeng CR. A novel strategy of using corifollitropin alfa in the ultrashort gonadotropin-releasing hormone agonist (GnRHa) protocol in unselected patients: A patient-friendly alternative. Taiwan J Obstet Gynecol 2019; 58:656-661. [DOI: 10.1016/j.tjog.2019.07.013] [Citation(s) in RCA: 1] [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] [Accepted: 07/01/2019] [Indexed: 10/26/2022] Open
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Lee HC, Yin PH, Yu TN, Chang YD, Hsu WC, Kao SY, Chi CW, Liu TY, Wei YH. Accumulation of mitochondrial DNA deletions in human oral tissues -- effects of betel quid chewing and oral cancer. Mutat Res 2001; 493:67-74. [PMID: 11516716 DOI: 10.1016/s1383-5718(01)00160-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Accumulation of mitochondrial DNA (mtDNA) mutations in human tissues has been associated with intrinsic aging and environmental insult. Recently, mtDNA mutations have been detected in various tumors, including head and neck tumors. However, the factors affecting the occurrence and accumulation of mtDNA deletions in tumor tissues are poorly understood. In Taiwan, betel quid chewing is a major risk factor for oral cancer. Using polymerase chain reaction (PCR) techniques, we examined large-scale deletions of mtDNA in 53 pairs of tumor and non-tumor oral tissues from the patients with or without betel quid chewing history. The results revealed that irrespective of the history of betel quid chewing, the incidences of the 4977bp deletion and other deletions of mtDNA were lower in the tumor portion as compared with the non-tumor portion. The average proportions of the 4977bp deleted mtDNA in the tumor tissues of the betel quid chewers and non-betel quid chewers were 13- and 5-fold, respectively, lower than those in the corresponding non-tumor tissues. Moreover, the average proportion of 4977bp deleted mtDNA was significantly higher (P<0.05) in the non-tumor oral tissues of the patients with betel quid chewing history than that of the patients without the history of betel quid chewing. These results suggest that betel quid chewing may increase mtDNA mutation in human oral tissues and that accumulation of mtDNA deletions and subsequent cytoplasmic segregation of these mutations during cell division could be an important contributor to the early phase of oral carcinogenesis.
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Affiliation(s)
- H C Lee
- Department of Biochemistry and Center for Cellular and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan, ROC
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Chu CC, Huang CC, Kao LY, Kuo HC, Yu TN, Tso DJ, Lee HC, Wei YH. Clinical phenotype and the G11778A mutation of mitochondrial DNA in patients with Leber’s hereditary optic neuropathy in Taiwan. Neuroophthalmology 2001. [DOI: 10.1076/noph.26.4.207.15871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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