1
|
Takahashi N, Franciosi F, Daldello EM, Luong XG, Althoff P, Wang X, Conti M. CPEB1-dependent disruption of the mRNA translation program in oocytes during maternal aging. Nat Commun 2023; 14:416. [PMID: 36697412 PMCID: PMC9877008 DOI: 10.1038/s41467-023-35994-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 01/11/2023] [Indexed: 01/27/2023] Open
Abstract
The molecular causes of deteriorating oocyte quality during aging are poorly defined. Since oocyte developmental competence relies on post-transcriptional regulations, we tested whether defective mRNA translation contributes to this decline in quality. Disruption in ribosome loading on maternal transcripts is present in old oocytes. Using a candidate approach, we detect altered translation of 3'-UTR-reporters and altered poly(A) length of the endogenous mRNAs. mRNA polyadenylation depends on the cytoplasmic polyadenylation binding protein 1 (CPEB1). Cpeb1 mRNA translation and protein levels are decreased in old oocytes. This decrease causes de-repression of Ccnb1 translation in quiescent oocytes, premature CDK1 activation, and accelerated reentry into meiosis. De-repression of Ccnb1 is corrected by Cpeb1 mRNA injection in old oocytes. Oocyte-specific Cpeb1 haploinsufficiency in young oocytes recapitulates all the translation phenotypes of old oocytes. These findings demonstrate that a dysfunction in the oocyte translation program is associated with the decline in oocyte quality during aging.
Collapse
Affiliation(s)
- Nozomi Takahashi
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA
| | - Federica Franciosi
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,Reproductive and Developmental Biology Lab, Department of Veterinary Medicine and Animal Science, Università degli Studi di Milano, 20133, Milan, Italy
| | - Enrico Maria Daldello
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,Sorbonne Université, CNRS, Laboratoire de Biologie du Développement-Institut de Biologie Paris Seine, LBD-IBPS, Paris, France
| | - Xuan G Luong
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA
| | - Peter Althoff
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA
| | - Xiaotian Wang
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA.,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA
| | - Marco Conti
- Center for Reproductive Sciences, University of California, San Francisco, CA, 94143, USA. .,USA Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, CA, 94143, USA. .,Department of Obstetrics and Gynecology and Reproductive Sciences, University of California, San Francisco, CA, 94143, USA.
| |
Collapse
|
2
|
Bühler N. The making of 'old eggs': the science of reproductive ageing between fertility and anti-ageing technologies. REPRODUCTIVE BIOMEDICINE & SOCIETY ONLINE 2022; 14:169-181. [PMID: 35024473 PMCID: PMC8732751 DOI: 10.1016/j.rbms.2021.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 05/09/2021] [Accepted: 07/29/2021] [Indexed: 06/14/2023]
Abstract
This article proposes going back in the history of reproductive medicine to shed light on the role of assisted reproductive technology (ART) in the making of 'old eggs'. Focusing on two key technologies - egg donation and cytoplasmic transfer - both of which contributed significantly to the production of scientific knowledge about reproductive ageing, the article suggests that ART can be analysed as 'in-vivo models' playing a pivotal role in the shift from age as a demographic variable to ageing understood in biological terms. It will shed light on the role of ART in locating age in the eggs and producing a cellular understanding of fertility decline. It argues that ART not only offers new means of reconfiguring the biological clock by extending fertility, but also reconfigures the biology of reproductive ageing itself. This becomes both the target and the means for new technological interventions, imaginaries and norms, anchored in women's bodies and a more plastic biology, and thereby illuminates hitherto underexplored aspects of the encounter between the science and technology of reproduction and anti-ageing.
Collapse
|
3
|
Gayatri M, Utomo B, Budiharsana M, Dasvarma G. Pregnancy resumption following contraceptive discontinuation: Hazard survival analysis of the Indonesia Demographic and Health Survey Data 2007, 2012 and 2017. PLoS One 2022; 17:e0264318. [PMID: 35196329 PMCID: PMC8865679 DOI: 10.1371/journal.pone.0264318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Accepted: 02/08/2022] [Indexed: 11/18/2022] Open
Abstract
Objective The objective of this research is to estimate the probability of pregnancy resumption after discontinuing reversible contraceptives—pills, injectables, implants and IUDs, and to examine the factors associated with the resumption of fertility. Method The study uses pregnancy calendar data from Indonesia Demographic and Health Surveys (IDHS) of 2007, 2012 and 2017. A hazard model survival method is used for estimating the time needed to resume pregnancy since discontinuing reversible contraceptives. Retrospective data on 4,573; 5,183 and 5,989 episodes of reversible contraceptive discontinuation at the three surveys respectively have been analysed. Results This study shows that women regained fecundity within one year of discontinuing IUD, pill, injectables or implants. Women using IUD could resume their pregnancy faster than those using implants, pills and injectables. Over the three IDHS 2007, 2012 and 2017 the age-specific percentages of women becoming pregnant after one year of contraceptive discontinuation vary between 72 and 85 for IUD, 75 and 81 for pills, 72 and 76 for implants and 64 and 67 for injectables, with the percentages being higher among younger women. The analysis further shows that length of contraceptive use, parity, prior sexually transmitted infections, knowledge of fertile period, household wealth status and place of residence have no impact on occurrence of pregnancy after contraceptive discontinuation. Conclusion The analysis disproves a myth that reversible contraceptives make women infertile. Depending on the type of reversible contraceptive used, 65% to 85% of the women were able to conceive after one year of discontinuation.
Collapse
Affiliation(s)
- Maria Gayatri
- Centre for Research and Development on Family Planning and Family Welfare, Badan Kependudukan dan Keluarga Berencana Nasional, East Jakarta, Indonesia
- * E-mail:
| | - Budi Utomo
- Faculty of Public Health, University of Indonesia, Depok, Indonesia
| | | | - Gouranga Dasvarma
- College of Humanities, Arts and Social Sciences, Flinders University, Adelaide, Australia
| |
Collapse
|
4
|
Newman H, Catt S, Vining B, Vollenhoven B, Horta F. DNA repair and response to sperm DNA damage in oocytes and embryos, and the potential consequences in ART: a systematic review. Mol Hum Reprod 2021; 28:6483093. [PMID: 34954800 DOI: 10.1093/molehr/gaab071] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Sperm DNA damage is considered a predictive factor for the clinical outcomes of patients undergoing ART. Laboratory evidence suggests that zygotes and developing embryos have adopted specific response and repair mechanisms to repair DNA damage of paternal origin. We have conducted a systematic review in accordance with guidelines from Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) to identify and review the maternal mechanisms used to respond and repair sperm DNA damage during early embryonic development, how these mechanisms operate and their potential clinical implications. The literature search was conducted in Ovid MEDLINE and Embase databases until May 2021. Out of 6297 articles initially identified, 36 studies were found to be relevant through cross referencing and were fully extracted. The collective evidence in human and animal models indicate that the early embryo has the capacity to repair DNA damage within sperm by activating maternally driven mechanisms throughout embryonic development. However, this capacity is limited and likely declines with age. The link between age and decreased DNA repair capacity could explain decreased oocyte quality in older women, poor reproductive outcomes in idiopathic cases, and patients who present high sperm DNA damage. Ultimately, further understanding mechanisms underlying the maternal repair of sperm DNA damage could lead to the development of targeted therapies to decrease sperm DNA damage, improved oocyte quality to combat incoming DNA insults or lead to development of methodologies to identify individual spermatozoa without DNA damage.
Collapse
Affiliation(s)
- H Newman
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| | - S Catt
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| | - B Vining
- Centre for Endocrinology and Metabolism, Hudson Institute of Medical Research, Melbourne, VIC 3168, Australia.,Department of Molecular and Translational Science, Monash University, Melbourne, VIC, 3800, Australia
| | - B Vollenhoven
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia.,Monash IVF, Melbourne, VIC, 3168, Australia.,Women's and Newborn Program, Monash Health, VIC, 3169, Australia
| | - F Horta
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia.,Monash IVF, Melbourne, VIC, 3168, Australia
| |
Collapse
|
5
|
Erzhi Tiangui Granules Improve In Vitro Fertilization Outcomes in Infertile Women with Advanced Age. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9951491. [PMID: 34422084 PMCID: PMC8378947 DOI: 10.1155/2021/9951491] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/04/2021] [Indexed: 11/17/2022]
Abstract
Background The fertility of females with advanced age declines with aging. Therefore, for medical and social reasons, it is important to establish mechanisms to protect and improve the fertility of such populations. With widespread use of traditional Chinese medicine (TCM) in in vitro fertilization (IVF), studies have evaluated their impact on improving the fertility of females with advanced age. In this study, we performed proteomic analysis of follicular fluid to reveal mechanisms of the Erzhi Tiangui (EZTG) granule (Chinese herbs for replenishing vital essence to tonify the kidney) in improving the outcomes of IVF in infertile women with advanced age. Methods This was a randomized, double-blind, and placebo-controlled trial in which 100 patients with advanced age were divided into the EZTG group and the placebo group by the random number table plus envelope method. Both groups were subjected to controlled ovarian stimulation with a GnRH antagonist regimen. Differences between the two groups were evaluated, including the TCM syndrome score after treatment, gonadotrophin (Gn) days and Gn doses, the number of retrieved oocytes, 2 pronucleus (PN) fertilization, 2PN cleavage, and high-quality embryos. Differentially expressed proteins were identified using the LC-MS/MS method, and their functions were determined through bioinformatics analyses. Results The number of high-quality embryos in the placebo group was significantly lower than that in the EZTG group (2.88 ± 1.85 vs. 4.13 ± 2.83, p=0.011). Eleven differentially expressed proteins were identified between the two groups. Four proteins were highly expressed, whereas seven were suppressed in the control group, compared to the EZTG group. The overall trend suggested that the apoptotic effect in the follicular fluid of the EZTG group was downregulated. Conclusion Treatment with the EZTG granule can improve embryo quality in IVF of advanced age females with both kidney Qi and Yin deficiency syndromes. The mechanism is attributed to downregulation of apoptotic-effector protein expressions in the follicular fluid. This trial is registered with ChiCTR1900025139.
Collapse
|
6
|
Oni TO, Ilesanmi BB, Yinusa RA, Oyeleye OJ, Oluwatope OB, Solanke BL. Individual and community factors associated with unintended pregnancies among women of advanced reproductive age in Nigeria. Women Health 2021; 61:700-712. [PMID: 34304727 DOI: 10.1080/03630242.2021.1957746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Studies have examined individual and community level factors associated with unintended pregnancies. However, existing studies tends to focus the general population of reproductive age women without isolating women of advanced reproductive age (women at the age range of 35-49 years) for specific research attention. There is need for specific attention on this group of women because pregnancies among them whether intended or unintended elevate obstetric risks for both mother and child. This study examines associated individual and community factors of unintended pregnancies among women of advanced reproductive age in Nigeria. Data were extracted from the 2018 Nigeria Demographic and Health Survey. A weighted sample of 12,509 women was analyzed. Three multilevel logistic regression models were estimated. The study revealed a 10.3% prevalence of unintended pregnancies. Individual characteristics such as maternal age, number of living children, delayed marriage, and community characteristics such as high community poverty and high community unmet contraceptive need were significantly associated with unintended pregnancies. Variations in unintended pregnancies across the communities were more attributable to individual factors. Interventions should develop specific strategies tailored toward women of advanced reproductive age.
Collapse
Affiliation(s)
- Tosin Olajide Oni
- Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Benjamin Bukky Ilesanmi
- Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Rasheed Adebayo Yinusa
- Department of Demography and Social Statistics, Federal University, Birnin-Kebbi, Nigeria
| | - Olaoye James Oyeleye
- Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Nigeria.,Action Against Hunger, ACF-International, Damaturu, Yobe
| | - Omolayo Bukola Oluwatope
- Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Nigeria.,National Centre for Technology Management, Obafemi Awolowo University, Ile-Ife, Nigeria
| | - Bola Lukman Solanke
- Department of Demography and Social Statistics, Obafemi Awolowo University, Ile-Ife, Nigeria
| |
Collapse
|
7
|
Horta F, Catt S, Ramachandran P, Vollenhoven B, Temple-Smith P. Female ageing affects the DNA repair capacity of oocytes in IVF using a controlled model of sperm DNA damage in mice. Hum Reprod 2021; 35:529-544. [PMID: 32108237 DOI: 10.1093/humrep/dez308] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/17/2019] [Indexed: 01/07/2023] Open
Abstract
STUDY QUESTION Does female ageing have a negative effect on the DNA repair capacity of oocytes fertilised by spermatozoa with controlled levels of DNA damage? SUMMARY ANSWER Compared to oocytes from younger females, oocytes from older females have a reduced capacity to repair damaged DNA introduced by spermatozoa. WHAT IS KNOWN ALREADY The reproductive lifespan in women declines with age predominantly due to poor oocyte quality. This leads to decreased reproductive outcomes for older women undergoing assisted reproductive technology (ART) treatments, compared to young women. Ageing and oocyte quality have been clearly associated with aneuploidy, but the range of factors that influence this change in oocyte quality with age remains unclear. The DNA repair activity prior to embryonic genomic activation is considered to be of maternal origin, with maternal transcripts and proteins controlling DNA integrity. With increasing maternal age, the number of mRNAs stored in oocytes decreases. This could result in diminished efficiency of DNA repair and/or negative effects on embryo development, especially in the presence of DNA damage. STUDY DESIGN, SIZE, DURATION Oocytes from two age groups of 30 super-ovulated female mice (young: 5-8 weeks old, n = 15; old: 42-45 weeks old, n = 15) were inseminated with sperm from five males with three different controlled DNA damage levels; control: ≤10%, 1 Gray (Gy): 11-30%, and 30 Gy: >30%. Inseminated oocytes (young: 125, old: 78) were assessed for the formation of zygotes (per oocyte) and blastocysts (per zygote). Five replicates of five germinal vesicles (GVs) and five MII oocytes from each age group were analysed for gene expression. The DNA damage response (DDR) was assessed in a minimum of three IVF replicates in control and 1 Gy zygotes and two-cell embryos using γH2AX labelling. PARTICIPANTS/MATERIALS, SETTING, METHODS Swim-up sperm samples from the cauda epididymidis of C57BL6 mice were divided into control (no irradiation) and 1- and 30-Gy groups. Treated spermatozoa were irradiated at 1 and 30 Gy, respectively, using a linear accelerator Varian 21iX. Following irradiation, samples were used for DNA damage assessment (Halomax) and for insemination. Presumed zygotes were cultured in a time-lapse incubator (MIRI, ESCO). Gene expression of 91 DNA repair genes was assessed using the Fluidigm Biomark HD system. The DNA damage response in zygotes (6-8 h post-fertilisation) and two-cell embryos (22-24 h post-fertilisation) was assessed by immunocytochemical analysis of γH2AX using confocal microscopy (Olympus FV1200) and 3D volumetric analysis using IMARIS software. MAIN RESULTS AND THE ROLE OF CHANCE The average sperm DNA damage for the three groups was statistically different (control: 6.1%, 1 Gy: 16.1%, 30 Gy: 53.1%, P < 0.0001), but there were no significant differences in fertilisation rates after IVF within or between the two age groups [(young; control: 86.79%, 1 Gy: 82.75%, 30 Gy: 76.74%) (old; control: 93.1%, 1 Gy: 70.37%, 30 Gy: 68.18%) Fisher's exact]. However, blastocyst rates were significantly different (P < 0.0001) among the groups [(young; control: 86.95%, 1 Gy: 33.33%, 30 Gy: 0.0%) (old; control: 70.37%, 1 Gy: 0.0%, 30 Gy: 0.0%)]. Between the age groups, 1-Gy samples showed a significant decrease in the blastocyst rate in old females compared to young females (P = 0.0166). Gene expression analysis revealed a decrease in relative expression of 21 DNA repair genes in old GV oocytes compared to young GV oocytes (P < 0.05), and similarly, old MII oocytes showed 23 genes with reduced expression compared to young MII oocytes (P < 0.05). The number of genes with decreased expression in older GV and MII oocytes significantly affected pathways such as double strand break (GV: 5; MII: 6), nucleotide excision repair (GV: 8; MII: 5) and DNA damage response (GV: 4; MII: 8). There was a decreased DDR in zygotes and in two-cell embryos from old females compared to young regardless of sperm treatment (P < 0.05). The decrease in DNA repair gene expression of oocytes and decreased DDR in embryos derived from older females suggests that ageing results in a diminished DNA repair capacity. LARGE-SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Ionising radiation was used only for experimental purposes, aiming at controlled levels of sperm DNA damage; however, it can also damage spermatozoa proteins. The female age groups selected in mice were intended to model effects in young and old women, but clinical studies are required to demonstrate a similar effect. WIDER IMPLICATIONS OF THE FINDINGS Fertilisation can occur with sperm populations with medium and high DNA damage, but subsequent embryo growth is affected to a greater extent with aging females, supporting the theory that oocyte DNA repair capacity decreases with age. Assessment of the oocyte DNA repair capacity may be a useful diagnostic tool for infertile couples. STUDY FUNDING/COMPETING INTEREST(S) Funded by the Education Program in Reproduction and Development, Department of Obstetrics and Gynaecology, Monash University. None of the authors has any conflict of interest to report.
Collapse
Affiliation(s)
- F Horta
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| | - S Catt
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| | - P Ramachandran
- Peter MacCallum Cancer Centre, Monash Health, Melbourne, VIC 3164, Australia
| | - B Vollenhoven
- Monash IVF, Melbourne, VIC 3168, Australia.,Women's and Newborn Program, Monash Health, VIC 3169, Australia.,Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| | - P Temple-Smith
- Education Program in Reproduction & Development, Department of Obstetrics and Gynecology, Monash University, Melbourne, VIC 3168, Australia
| |
Collapse
|
8
|
Zhang W, Zhang L, Liu Y, Li J, Xu X, Niu W, Xu J, Sun B, Guo Y. Higher chromosomal aberration frequency in products of conception from women older than 32 years old with diminished ovarian reserve undergoing IVF/ICSI. Aging (Albany NY) 2021; 13:10128-10140. [PMID: 33819190 PMCID: PMC8064218 DOI: 10.18632/aging.202772] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 03/02/2021] [Indexed: 12/22/2022]
Abstract
Infertile women with diminished ovarian reserve (DOR) confront an increased miscarriage rate in assisted reproductive technology (ART). Genetic abnormality is the most important factor. However, the effects of DOR and female age on the molecular karyotype of products of conception (POCs) remain unknown. We analyzed POCs using a single nucleotide polymorphism (SNP) microarray from women with DOR who experienced first-trimester miscarriage in IVF/ICSI cycles. The SNP microarray revealed chromosomal abnormalities in 74.6% (47/63) of POCs, including trisomy in 83.0% (39/47). Chromosomal aberrations were more frequent in women older than 32 years old with DOR than in young women aged 20-32 years old (86.7% vs. 44.4%, P = 0.001). Univariate and multivariable analyses identified advanced age as a risk factor for chromosomal aberration-related miscarriage in women with DOR, with odds ratios of 8.125 (95% CI: 2.291-28.820, P = 0.001) and 5.867 (95% CI: 1.395-24.673, P = 0.016), respectively. The results showed that older women (older than 32 years old) with DOR had a high risk of miscarrying a chromosomally aberrant embryo/fetus, regardless of basal follicle-stimulating hormone (FSH), anti-Mullerian hormone (AMH), antral follicle count (AFC) and previous reproductive history. This finding indicates a novel cut-off value of age for women with DOR related to chromosomal aberration-related miscarriage.
Collapse
Affiliation(s)
- Wanyu Zhang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Linghan Zhang
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Yu Liu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Jing Li
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Xiaolu Xu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Wenbin Niu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China.,Department of Preimplantation Genetic Diagnosis, Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Jiawei Xu
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China.,Department of Preimplantation Genetic Diagnosis, Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Bo Sun
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| | - Yihong Guo
- Center for Reproductive Medicine, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China.,Henan Province Key Laboratory of Reproduction and Genetics, Henan, China
| |
Collapse
|
9
|
Yen C, Curran SP. Incomplete proline catabolism drives premature sperm aging. Aging Cell 2021; 20:e13308. [PMID: 33480139 PMCID: PMC7884046 DOI: 10.1111/acel.13308] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 11/19/2020] [Accepted: 12/27/2020] [Indexed: 12/20/2022] Open
Abstract
Infertility is an increasingly common health issue, with rising prevalence in advanced parental age. Environmental stress has established negative effects on reproductive health, however, the impact of altering cellular metabolism and its endogenous reactive oxygen species (ROS) on fertility remains unclear. Here, we demonstrate the loss of proline dehydrogenase, the first committed step in proline catabolism, is relatively benign. In contrast, disruption of alh-6, which facilitates the second step of proline catabolism by converting 1-pyrroline-5-carboxylate (P5C) to glutamate, results in premature reproductive senescence, specifically in males. The premature reproductive senescence in alh-6 mutant males is caused by aberrant ROS homeostasis, which can be countered by genetically limiting the first committed step of proline catabolism that functions upstream of ALH-6 or by pharmacological treatment with antioxidants. Taken together, our work uncovers proline metabolism as a critical component of normal sperm function that can alter the rate of aging in the male reproductive system.
Collapse
Affiliation(s)
- Chia‐An Yen
- Leonard Davis School of Gerontology University of Southern California Los Angeles CA USA
- Department of Molecular and Computation Biology Dornsife College of Letters, Arts, and Sciences University of Southern California Los Angeles CA USA
| | - Sean P. Curran
- Leonard Davis School of Gerontology University of Southern California Los Angeles CA USA
- Department of Molecular and Computation Biology Dornsife College of Letters, Arts, and Sciences University of Southern California Los Angeles CA USA
| |
Collapse
|
10
|
Di Mattei VE, Perego G, Rancoita PMV, Taranto P, Carnelli L, Mangili G, Sarais V, Bergamini A, Candiani M. Psychological Aspects Associated With Fertility Preservation in Oncology: An Exploratory Study. Front Psychol 2021; 11:608651. [PMID: 33414749 PMCID: PMC7783324 DOI: 10.3389/fpsyg.2020.608651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/25/2020] [Indexed: 11/13/2022] Open
Abstract
Objective Gonadotoxicity is considered one of the most distressing side effects of cancer treatment. Although fertility preservation can be a valid solution, it also involves a challenging process. A clear understanding of the features of women who decide to pursue fertility preservation after cancer diagnosis is missing. The purpose of the present study was therefore to analyze the personality profile of female patients referred to oncofertility prior to gonadotoxic treatment. Methods Fifty-two female cancer patients took part in the study. The Temperament and Character Inventory-Revised (TCI-R), the Response Evaluation Measure-71 (REM-71), the Beck Depression Inventory (BDI-II), and the State-Trait Anxiety Inventory-Y Form (STAI-Y) were administered to examine personality characteristics, defense mechanisms, depression and anxiety symptoms. Results Compared with reference data of the Italian population, our sample reported significantly lower scores in Harm Avoidance and trait anxiety, and significantly higher levels of mature defense mechanisms. Most of the patients reported low scores in immature defense mechanisms, depression, and trait anxiety, and medium scores in state anxiety. Conclusions Our findings suggest that these women display functional personality traits and defensive style, in association with low levels of depression and trait anxiety. These features may enable a proactive attitude to cancer and the ability to make long-term plans. This may favor psychological adjustment to cancer and a projection toward the future.
Collapse
Affiliation(s)
- Valentina Elisabetta Di Mattei
- Division of Neuroscience, Clinical and Health Psychology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.,School of Psychology, Vita-Salute San Raffaele University, Milan, Italy
| | - Gaia Perego
- Department of Psychology, University of Milano-Bicocca, Milan, Italy
| | - Paola Maria Vittoria Rancoita
- University Centre for Statistics in the Biomedical Sciences (CUSSB), Vita-Salute San Raffaele University, Milan, Italy.,School of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Paola Taranto
- Division of Neuroscience, Clinical and Health Psychology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Letizia Carnelli
- Division of Neuroscience, Clinical and Health Psychology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Giorgia Mangili
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Veronica Sarais
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alice Bergamini
- Obstetrics and Gynecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Massimo Candiani
- School of Medicine, Vita-Salute San Raffaele University, Milan, Italy.,Obstetrics and Gynecology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| |
Collapse
|
11
|
|
12
|
Kordowitzki P, López de Silanes I, Guío-Carrión A, Blasco MA. Dynamics of telomeric repeat-containing RNA expression in early embryonic cleavage stages with regards to maternal age. Aging (Albany NY) 2020; 12:15906-15917. [PMID: 32860669 PMCID: PMC7485725 DOI: 10.18632/aging.103922] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 07/21/2020] [Indexed: 12/11/2022]
Abstract
Telomeres are transcribed into long non-coding RNAs known as Telomeric Repeat-Containing RNA (TERRA). They have been shown to be essential regulators of telomeres and to act as epigenomic modulators at extra-telomeric sites. However the role of TERRA during early embryonic development has never been investigated. Here, we show that TERRA is expressed in murine and bovine early development following a wave pattern. It starts at 4-cell stage, reaching a maximum at the 16-cell followed by a decline at the morula and blastocyst stages. Moreover, TERRA expression is not affected by increasing oocyte donor age whereas telomere length does. This indicates that TERRA expression is independent of the telomere length in early development. Our findings anticipate an essential role of TERRA in early stages of development and this might be useful in the future for a better understanding of age related female infertility.
Collapse
Affiliation(s)
- Paweł Kordowitzki
- Institute of Animal Reproduction and Food Research of Polish Academy of Sciences, Olsztyn, Poland.,Institute for Veterinary Medicine, Nicolaus Copernicus University, Torun, Poland
| | - Isabel López de Silanes
- Telomeres and Telomerase Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Ana Guío-Carrión
- Telomeres and Telomerase Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Maria A Blasco
- Telomeres and Telomerase Group, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| |
Collapse
|
13
|
Olsen KW, Castillo-Fernandez J, Zedeler A, Freiesleben NC, Bungum M, Chan AC, Cardona A, Perry JRB, Skouby SO, Borup R, Hoffmann ER, Kelsey G, Grøndahl ML. A distinctive epigenetic ageing profile in human granulosa cells. Hum Reprod 2020; 35:1332-1345. [DOI: 10.1093/humrep/deaa071] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 03/11/2020] [Indexed: 12/17/2022] Open
Abstract
Abstract
STUDY QUESTION
Does women’s age affect the DNA methylation (DNAm) profile differently in mural granulosa cells (MGCs) from other somatic cells?
SUMMARY ANSWER
Accumulation of epimutations by age and a higher number of age-related differentially methylated regions (DMR) in MGCs were found compared to leukocytes from the same woman, suggesting that the MGCs have a distinctive epigenetic profile.
WHAT IS KNOWN ALREADY
The mechanisms underlying the decline in women’s fertility from the mid-30s remain to be fully elucidated. The DNAm age of many healthy tissues changes predictably with and follows chronological age, but DNAm age in some reproductive tissues has been shown to depart from chronological age (older: endometrium; younger: cumulus cells, spermatozoa).
STUDY DESIGN, SIZE, DURATION
This study is a multicenter cohort study based on retrospective analysis of prospectively collected data and material derived from healthy women undergoing IVF or ICSI treatment following ovarian stimulation with antagonist protocol. One hundred and nineteen women were included from September 2016 to June 2018 from four clinics in Denmark and Sweden.
PARTICIPANTS/MATERIALS, SETTING, METHODS
Blood samples were obtained from 118 healthy women with varying ovarian reserve status. MGCs were collected from 63 of the 119 women by isolation from pooled follicles immediately after oocyte retrieval. DNA from leukocytes and MGCs was extracted and analysed with a genome-wide methylation array. Data from the methylation array were processed using the ENmix package. Subsequently, DNAm age was calculated using established and tailored age predictors and DMRs were analysed with the DMRcate package.
MAIN RESULTS AND ROLE OF CHANCE
Using established age predictors, DNAm age in MGCs was found to be considerable younger and constant (average: 2.7 years) compared to chronological age (average: 33.9 years). A Granulosa Cell clock able to predict the age of both MGCs (average: 32.4 years) and leukocytes (average: 38.8 years) was successfully developed. MGCs differed from leukocytes in having a higher number of epimutations (P = 0.003) but predicted telomere lengths unaffected by age (Pearson’s correlation coefficient = −0.1, P = 0.47). DMRs associated with age (age-DMRs) were identified in MGCs (n = 335) and in leukocytes (n = 1) with a significant enrichment in MGCs for genes involved in RNA processing (45 genes, P = 3.96 × 10−08) and gene expression (152 genes, P = 2.3 × 10−06). The top age-DMRs included the metastable epiallele VTRNA2-1, the DNAm regulator ZFP57 and the anti-Müllerian hormone (AMH) gene. The apparent discordance between different epigenetic measures of age in MGCs suggests that they reflect difference stages in the MGC life cycle.
LARGE SCALE DATA
N/A.
LIMITATIONS, REASONS FOR CAUTION
No gene expression data were available to associate with the epigenetic findings. The MGCs are collected during ovarian stimulation, which may influence DNAm; however, no correlation between FSH dose and number of epimutations was found.
WIDER IMPLICATIONS OF THE FINDINGS
Our findings underline that the somatic compartment of the follicle follows a different methylation trajectory with age than other somatic cells. The higher number of epimutations and age-DMRs in MGCs suggest that their function is affected by age.
STUDY FUNDING/COMPETING INTEREST(S)
This project is part of ReproUnion collaborative study, co-financed by the European Union, Interreg V ÖKS, the Danish National Research Foundation and the European Research Council. The authors declare no conflict of interest.
Collapse
Affiliation(s)
- K W Olsen
- Department of Obstetrics and Gynaecology, Department of Reproductive Medicine, Copenhagen University Hospital Herlev, Herlev, Denmark
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | | | - A Zedeler
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - N C Freiesleben
- Department of Obstetrics and Gynaecology, The Fertility Clinic, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Stork IVF Clinic A/S Copenhagen, VivaNeo Fertility Clinics, Copenhagen, Denmark
| | - M Bungum
- Reproductive Medicine Centre, Skåne University Hospital, Malmoe, UK
| | - A C Chan
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - A Cardona
- Medical Research Council Epidemiology Unit, University of Cambridge Addenbrooke’s Hospital, Cambridge, UK
- Department of Genetics, University of Cambridge, Cambridge, UK
| | - J R B Perry
- Medical Research Council Epidemiology Unit, University of Cambridge Addenbrooke’s Hospital, Cambridge, UK
| | - S O Skouby
- Department of Obstetrics and Gynaecology, Department of Reproductive Medicine, Copenhagen University Hospital Herlev, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - R Borup
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - E R Hoffmann
- DNRF Center for Chromosome Stability, Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - G Kelsey
- Epigenetics Programme, Babraham Institute, Cambridge, UK
- Centre for Trophoblast Research, University of Cambridge, Cambridge, UK
| | - M L Grøndahl
- Department of Obstetrics and Gynaecology, Department of Reproductive Medicine, Copenhagen University Hospital Herlev, Herlev, Denmark
| |
Collapse
|
14
|
Aung T, Hughes SM, Hone LSE, Puts DA. Operational Sex Ratio Predicts Binge Drinking Across U.S. Counties. EVOLUTIONARY PSYCHOLOGY 2019; 17:1474704919874680. [PMID: 31564134 PMCID: PMC8211380 DOI: 10.1177/1474704919874680] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 07/31/2019] [Indexed: 12/25/2022] Open
Abstract
Previous research suggests that binge drinking among young men serves as a "costly signal" to potential mates, such that the binge drinker is capable of bearing the harmful consequences of alcohol consumption. Here, we propose that binge drinking among young adults is conditionally dependent upon the signaler's willingness to take risks, which is influenced by the local operational sex ratio (OSR). Using archived binge drinking estimates from 2009 to 2012 and Census Bureau records of OSRs, we tested the relationship between OSR and binge drinking rates at the county level across 3,143 U.S. counties against hypotheses drawn from evolutionary theory. Results from our mixed-effects models revealed that a higher overall OSR (i.e., more eligible men compared to women) was associated with higher male binge drinking rates but lower female binge drinking rates. A higher OSR particularly in the 20-29 and 50+ age groups predicted higher male binge drinking rates but lower female binge drinking rates. Our findings generally support predictions derived from evolutionary theory and suggest that binge drinking may function as a costly sexual signal, conditionally regulated by age and the local sex ratio.
Collapse
Affiliation(s)
- Toe Aung
- Department of Anthropology, Pennsylvania State University, University Park, PA, USA
| | - Susan M. Hughes
- Department of Psychology, Albright College, Reading, PA, USA
| | - Liana S. E. Hone
- Research Institute on Addictions, University at Buffalo, Buffalo, NY, USA
| | - David A. Puts
- Department of Anthropology, Pennsylvania State University, University Park, PA, USA
| |
Collapse
|
15
|
Gottschalk MS, Eskild A, Tanbo TG, Bjelland EK. Childbirth close to natural menopause: does age at menopause matter? Reprod Biomed Online 2019; 39:169-175. [PMID: 31122832 DOI: 10.1016/j.rbmo.2019.03.209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/06/2019] [Accepted: 03/18/2019] [Indexed: 11/29/2022]
Abstract
RESEARCH QUESTION Does a successful spontaneous pregnancy in the years close to natural menopause depend on age at menopause? DESIGN This was a retrospective population-based study of 4157 parous postmenopausal women in Norway, born during the years 1925-1940. Data were obtained by two self-administered questionnaires in the HUNT2 Survey (1995-1997). We calculated the proportions of women who gave birth within 5 years and within 10 years prior to menopause both among all women, and according to categories of age at menopause. RESULTS Overall, 2.7% (114/4157) of all women gave birth within 5 years, and 11.7% (487/4157) gave birth within 10 years, prior to menopause. Among women with menopause before the age of 45 years, 23.5% (81/344) gave birth within 5 years, and 55.5% (191/344) gave birth within 10 years, before menopause. Among the women with menopause at the age of 55 years or older, no women (0/474) gave birth within 5 years, and 0.2% (1/474) gave birth within 10 years, prior to menopause. CONCLUSIONS More than half of the women with menopause before the age of 45 years gave birth within the 10 years before natural menopause, whereas virtually no women with menopause at the age of 55 years or older did. Thus, the length of the sterile interval before natural menopause may vary by age at menopause.
Collapse
Affiliation(s)
- Marthe Sørli Gottschalk
- Department of Obstetrics and Gynecology, Akershus University Hospital, Lørenskog, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Anne Eskild
- Department of Obstetrics and Gynecology, Akershus University Hospital, Lørenskog, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Tom Gunnar Tanbo
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Reproductive Medicine, Oslo University Hospital Rikshospitalet, Oslo, Norway
| | | |
Collapse
|
16
|
Chamani IJ, Keefe DL. Epigenetics and Female Reproductive Aging. Front Endocrinol (Lausanne) 2019; 10:473. [PMID: 31551923 PMCID: PMC6736555 DOI: 10.3389/fendo.2019.00473] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 06/28/2019] [Indexed: 12/12/2022] Open
Abstract
With more women than ever waiting until a more advanced age to have children, there exists a newfound urgency to identify the various implications aging has on human reproduction, and understand the disrupted biological processes that result in these changes. In this review, we focus on one recent area of study: the age related epigenetic changes that have been found in female reproductive organs, and the effect these changes may contribute to reproductive outcomes.
Collapse
Affiliation(s)
| | - David L. Keefe
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY, United States
- *Correspondence: David L. Keefe
| |
Collapse
|
17
|
Warshaviak M, Kalma Y, Carmon A, Samara N, Dviri M, Azem F, Ben-Yosef D. The Effect of Advanced Maternal Age on Embryo Morphokinetics. Front Endocrinol (Lausanne) 2019; 10:686. [PMID: 31708867 PMCID: PMC6823873 DOI: 10.3389/fendo.2019.00686] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 09/20/2019] [Indexed: 01/04/2023] Open
Abstract
Purpose: To compare the morphokinetic parameters of pre-implantation development between embryos of women of advanced maternal age (AMA) and young women. Methods: Time-lapse microscopy was used to compare morphokinetic variables between 495 embryos of AMA women ≥ age 42 years and 653 embryos of young patients (<age 38 years) who underwent IVF in our unit. Developmental events annotated and analyzed include observed cell divisions in correlation to the timing of fertilization, synchrony of the second (s2) and third cell cycles (s3) and the duration to the second (cc2) and third cleavages (cc3). Results: No significant differences were observed in cleavage times between the embryos of AMA and the control embryos. Interestingly, the older embryos appear to be more prone to developmental arrest (a higher percentage of embryos of older women arrested at 4-7 cells resulting in less embryos reaching the 8-cell stage (66% vs. 72%, respectively), though this difference did not reach a significance at least during the first 3 days of development (p > 0.05). Conclusions: While early morphokinetic parameters do not reflect dynamics unique to embryos of older women, a tendency toward developmental arrest was observed, which would likely be even more pronounced at later stages of development.
Collapse
Affiliation(s)
- Miriam Warshaviak
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Yael Kalma
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ariela Carmon
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Nivin Samara
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Michal Dviri
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Foad Azem
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Dalit Ben-Yosef
- IVF Lab and Wolfe PGD-Stem Cell Lab, Fertility Institute, Tel-Aviv Sourasky Medical Center, Tel Aviv, Israel
- Department of Cell Biology and Development, Sackler Faculty of Medicine, Tel-Aviv University, Tel Aviv, Israel
- *Correspondence: Dalit Ben-Yosef
| |
Collapse
|
18
|
Chang Y, Li J, Li X, Liu H, Liang X. Egg Quality and Pregnancy Outcome in Young Infertile Women with Diminished Ovarian Reserve. Med Sci Monit 2018; 24:7279-7284. [PMID: 30310048 PMCID: PMC6195787 DOI: 10.12659/msm.910410] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Background This study investigated the quality and quantity of eggs and embryos as well as the clinical pregnancy outcome in young infertile women with diminished ovarian reserve (DOR) after in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI). Material/Methods We retrospectively reviewed records of 4285 infertile women and divided them into 3 groups according to age and ovarian reserve: young women with normal ovarian reserve (n=1695), young women with DOR (n=1121), and older women with DOR (n=1469). Results In young women with DOR, the proportion of high-quality embryos was significantly higher than in older women with DOR and lower than in young women with normal ovarian reserve (P<0.01). The proportions of ovulation cancellation, ovulation without egg acquisition, and ovulation without available embryos in young women with DOR were significantly higher than in young women with normal ovarian reserve. The rates of biochemical pregnancy, clinical pregnancy, and embryo implantation in young women with DOR were significantly higher than in older women with DOR, and lower than in young women with normal ovarian reserve. The miscarriage rate was 19.17% in young women with DOR, significantly lower than in older women with DOR (33.90%), and higher than in young women with normal ovarian reserve. Conclusions Young women with DOR have ovarian hypo-response and low numbers of acquired eggs and embryos, but the possibilities of high-quality embryo and good clinical pregnancy are higher once eggs are acquired. The indications to IVF/ICSI can be widened and active treatments should be administered for these women.
Collapse
Affiliation(s)
- Yajie Chang
- Reproductive Center, Sixth Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Jingjie Li
- Reproductive Center, Sixth Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Xiaolan Li
- Reproductive Center, Sixth Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| | - Hong'e Liu
- Department of Obstetrics and Gynecology, Guangzhou Development District Hospital, Guangzhou, Guangdong, China (mainland)
| | - Xiaoyan Liang
- Reproductive Center, Sixth Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China (mainland)
| |
Collapse
|
19
|
Explaining Fertility Variation in Rural Communities: The Role of Electricity in Ghana. ECONOMIES 2018. [DOI: 10.3390/economies6030040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We believe the massive rural electrification, which began in 1992, played a significant role in the varying fertility rates across rural Ghana. Rural households with electricity, tend to have fewer children ever born to a woman than households without electricity. Using control function regressions, we identify the contribution of electrification to the rural-rural variation in fertility by exploiting the exogenous variations in the access rate to electricity at the district-level. Our results indicate that electrification contributes to a fall in fertility among rural women by between one and three children. These results are qualitatively similar to results from our two-stage least squares estimations and counterfactual analysis. Although our results may not reflect what happens in other countries, they suggest that electrification reduces fertility and should be considered when examining the costs and benefits of rural electrification programs in developing countries.
Collapse
|
20
|
Silva E, Greene AF, Strauss K, Herrick JR, Schoolcraft WB, Krisher RL. Antioxidant supplementation during in vitro culture improves mitochondrial function and development of embryos from aged female mice. Reprod Fertil Dev 2017; 27:975-83. [PMID: 25739837 DOI: 10.1071/rd14474] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 01/20/2015] [Indexed: 12/31/2022] Open
Abstract
Maternal aging results in reduced oocyte and blastocyst quality, thought to be due, in part, to mitochondrial dysfunction and accumulation of reactive oxygen species. To reduce oxidative stress, the antioxidants α-lipoic acid (ALA; 10µM), α-tocopherol (250µM), hypotaurine (1mM) and N-acetylcysteine (NAC; 1mM), and sirtuin (100ngmL(-1)) were added to embryo culture medium (AntiOX) and compared with a control (CON) without antioxidants to assess blastocyst development after in vitro maturation and fertilisation of oocytes from aged B6D2F1 female mice (13.5 months). Development to the blastocyst stage increased in the AntiOX compared with CON group (87.6% vs 72.7%, respectively; P<0.01), in addition to higher mitochondrial membrane potential and ATP levels in the AntiOX group. Expression of genes associated with oxidative stress (PI3K, FOXO3A and GLRX2) was upregulated in the CON compared with AntiOX group. In addition to AntiOX, a medium containing only NAC and ALA (rAntiOX) was used to culture embryos from young CF1 females (6-8 weeks). More blastocysts developed in the rAntiOX compared with CON group (64.1% vs 43.3%, respectively; P<0.01), although AntiOX (48.0% blastocysts) did not result in improved development in young mice. Antioxidants improved mitochondrial activity, gene expression and development in embryos of older female mice, whereas a reduced level of antioxidants during culture was beneficial to embryos from young mice.
Collapse
Affiliation(s)
- Elena Silva
- National Foundation for Fertility Research, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| | - Alison F Greene
- National Foundation for Fertility Research, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| | - Kevin Strauss
- National Foundation for Fertility Research, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| | - Jason R Herrick
- National Foundation for Fertility Research, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| | - William B Schoolcraft
- Colorado Center for Reproductive Medicine, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| | - Rebecca L Krisher
- National Foundation for Fertility Research, 10290 RidgeGate Cr., Lone Tree, CO 80124, USA
| |
Collapse
|
21
|
Yilmaz N, Kara M, Coskun B, Kaba M, Erkilinc S, Yenicesu O, Erkaya S. Perinatal outcomes and cost-effectivity of the assisted reproduction pregnancies with advanced age: A retrospective analysis. J OBSTET GYNAECOL 2016; 37:450-453. [PMID: 27868470 DOI: 10.1080/01443615.2016.1251887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We demonstrated the IVF-ICSI results, perinatal outcomes and cost-effectivity of the patients with advanced age at a tertiary centre. A total of 456 patients categorised into two groups according to age: group 1 (n = 158) (≥39years) and group 2 (n = 298) (<39years) were analysed retrospectively. In addition, subgroup analysis was performed according to the 40 years cut-off. Clinical pregnancy rate was significantly different between the groups (p< .001). Preterm delivery (< 37 gestational week) and low birth weight (< 2500 g) were significantly higher in advanced aged women than youngsters (p< .001). Mean expense per cycle for hormonal stimulation of IVF-ICSI was 1058.9 and 723.5 USD in groups 1 and 2, respectively (p< .001). Mean expense per pregnancy was 9294.7 and 1874.8 USD in groups 1 and 2, respectively (p< .001). Our study showed that perinatal outcomes and cost-effectivity might be adversely affected with increasing age.
Collapse
Affiliation(s)
- Nafiye Yilmaz
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Mustafa Kara
- b Department of Obstetrics and Gynecology, School of Medicine , Bozok University , Yozgat , Turkey
| | - Bugra Coskun
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Metin Kaba
- c Department of Obstetrics and Gynecology, School of Medicine , Akdeniz University , Antalya , Turkey
| | - Selçuk Erkilinc
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Okan Yenicesu
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| | - Salim Erkaya
- a Department of Obstetrics and Gynecology , Zekai Tahir Burak Women's Health Education and Research Hospital , Ankara , Turkey
| |
Collapse
|
22
|
Silva E, Soares AI, Costa F, Castro JP, Matos L, Almeida H. Antioxidant Supplementation Modulates Age-Related Placental Bed Morphology and Reproductive Outcome in Mice. Biol Reprod 2015; 93:56. [PMID: 26178715 DOI: 10.1095/biolreprod.114.127746] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 07/02/2015] [Indexed: 11/01/2022] Open
Abstract
The number of women who delay their first childbirth is increasing. This demographic shift is an important health issue because advanced maternal age is a risk factor for reproductive capacity loss and the occurrence of placental bed disorders that may lead to placenta abruption, preeclampsia, and placenta insufficiency. A redox imbalance status, resulting from the enhanced production of reactive oxygen species or their deficient neutralization, is proposed to occur in this setting. Thus, uterine redox status was evaluated in young (8- to 12-wk-old) and reproductively aged (38- to 42-wk-old) mice. In addition, it was hypothesized that specific dietary antioxidant supplementation would restore the balance and improve the reproductive outcome of aging female mice. To test this hypothesis, two different antioxidants, the nicotinamide adenine dinucleotide phosphate oxidase (NOX) inhibitor apocynin and the superoxide dismutase mimetic 4-hydroxy-2,2,6,6-tetramethylpiperidinyloxy (TEMPOL), were added to the drinking water of female mice prior to and during pregnancy. Compared to younger females, uteri from reproductively aged nonpregnant mice exhibited areas of endometrial cystic dilation, increased level of NOX1 expression, and enhanced protein carbonylation, especially in the apical surface of the luminal epithelium. Both antioxidants decreased protein carbonylation level in the uterus of reproductively aged mice. When reproductively aged females became pregnant, the litter size was smaller and fetuses were heavier. The change was accompanied by a significant decrease in decidua thickness. Provision of apocynin significantly increased litter size and restored decidua thickness. Reproductively aged mice provided with TEMPOL did not evidence such benefits, but whereas apocynin normalized fetal birth weight, TEMPOL further increased it. These findings emphasize that uterine redox balance is important for reproductive success and suggest that age-related redox imbalance might be compensated by specific antioxidant supplementation.
Collapse
Affiliation(s)
- Elisabete Silva
- Instituto de Inovação e Investigação em Saúde (I3S) and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal
| | - Ana Isabel Soares
- Instituto de Inovação e Investigação em Saúde (I3S) and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal
| | - Filipe Costa
- Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal
| | - José Pedro Castro
- Instituto de Inovação e Investigação em Saúde (I3S) and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal
| | - Liliana Matos
- Instituto de Inovação e Investigação em Saúde (I3S) and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal Faculty of Nutrition and Food Sciences of Porto University, Porto, Portugal
| | - Henrique Almeida
- Instituto de Inovação e Investigação em Saúde (I3S) and Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal Department of Experimental Biology, Faculty of Medicine of Porto University, Porto, Portugal Obstetrics-Gynecology, Hospital-CUF Porto, Porto, Portugal
| |
Collapse
|
23
|
Devine K, Mumford SL, Goldman KN, Hodes-Wertz B, Druckenmiller S, Propst AM, Noyes N. Baby budgeting: oocyte cryopreservation in women delaying reproduction can reduce cost per live birth. Fertil Steril 2015; 103:1446-53.e1-2. [PMID: 25813281 PMCID: PMC4457614 DOI: 10.1016/j.fertnstert.2015.02.029] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 01/24/2015] [Accepted: 02/16/2015] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether oocyte cryopreservation for deferred reproduction is cost effective per live birth using a model constructed from observed clinical practice. DESIGN Decision-tree mathematical model with sensitivity analyses. SETTING Not applicable. PATIENT(S) A simulated cohort of women wishing to delay childbearing until age 40 years. INTERVENTION(S) Not applicable. MAIN OUTCOME MEASURE(S) Cost per live birth. RESULT(S) Our primary model predicted that oocyte cryopreservation at age 35 years by women planning to defer pregnancy attempts until age 40 years would decrease cost per live birth from $55,060 to $39,946 (and increase the odds of live birth from 42% to 62% by the end of the model), indicating that oocyte cryopreservation is a cost-effective strategy relative to forgoing it. If fresh autologous assisted reproductive technology (ART) was added at age 40 years, before thawing oocytes, 74% obtained a live birth, and cost per live birth increased to $61,887. Separate sensitivity analyses demonstrated that oocyte cryopreservation remained cost effective as long as performed before age 38 years, and more than 49% of those women not obtaining a spontaneously conceived live birth returned to thaw oocytes. CONCLUSION(S) In women who plan to delay childbearing until age 40 years, oocyte cryopreservation before 38 years of age reduces the cost to obtain a live birth.
Collapse
Affiliation(s)
- Kate Devine
- Program in Reproductive and Adult Endocrinology, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, New York, New York.
| | - Sunni L Mumford
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, New York, New York
| | - Kara N Goldman
- New York University School of Medicine, New York, New York
| | | | | | | | - Nicole Noyes
- New York University School of Medicine, New York, New York
| |
Collapse
|
24
|
Ehrlich S. Effect of fertility and infertility on longevity. Fertil Steril 2015; 103:1129-35. [DOI: 10.1016/j.fertnstert.2015.03.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2015] [Revised: 03/23/2015] [Accepted: 03/23/2015] [Indexed: 10/23/2022]
|
25
|
Bühler N. Ovules vieillissants, mères sans âge? Infertilité féminine et recours au don d’ovocytes en Suisse. ENFANCES, FAMILLES, GÉNÉRATIONS 2014. [DOI: 10.7202/1025958ar] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Cette contribution1 examine l’impact des possibilités d’extension de la fertilité féminine ouvertes par le don d’ovocytes sur les significations de l’« âge limite de la maternité », dans le contexte suisse où cette technique est interdite. En me focalisant sur les expériences de femmes recourant au don d’ovocytes en cas d’infertilité liée à l’âge, je montrerai comment cette technique ouvre un espace de contestation et de négociation des limites biologiques de la fertilité. La première partie examine l’utilisation des normes biologiques et statistiques du déclin de la fertilité dans le cadre du diagnostic; la deuxième montre comment les significations des limites d’âge se transforment au fil du parcours de procréation médicalement assistée (PMA); la troisième met en lumière quelques stratégies utilisées pour reconfigurer l’« horloge biologique ».
Collapse
Affiliation(s)
- Nolwenn Bühler
- Doctorante, Département d’anthropologie sociale et culturelle, Université de Zurich (Suisse)
| |
Collapse
|
26
|
Shoji M, Hamatani T, Ishikawa S, Kuji N, Ohta H, Matsui H, Yoshimura Y. Sexual satisfaction of infertile couples assessed using the Golombok-Rust Inventory of Sexual Satisfaction (GRISS). Sci Rep 2014; 4:5203. [PMID: 24902628 PMCID: PMC5381476 DOI: 10.1038/srep05203] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 05/19/2014] [Indexed: 12/26/2022] Open
Abstract
Recently, infertility treatment-related psychological effects are receiving increased attention. However, whether sexual satisfaction is reduced amongst infertile couples remains to be elucidated. In this study, sexual satisfaction of Japanese infertile couples was assessed using a validated questionnaire designed to assess the male and female partner individually, and the couple as a whole for the first time. This study randomly included 170 infertile couples seen at the outpatient clinic and 170 couples that had recently achieved spontaneous pregnancy. All couples were given the Japanese version of the Golombok-Rust Inventory of Sexual Satisfaction (GRISS). In couples aged 35 years or older, the male partners showed significantly worse sexual satisfaction scores than the female partners. Sexual satisfaction also deteriorated with therapeutic interventions, with mental factors affected more than physical factors. Therapeutic interventions such as timed sexual intercourse and assisted reproductive technology were considered emotionally stressful for infertile couples, with sexual satisfaction accordingly lower in this group than in couples achieving spontaneous pregnancy. GRISS successfully evaluated lower sexual satisfaction associated with infertility, and hence is a useful tool for identifying couples whose sexual satisfaction could be enhanced by counselling or other stress-reduction modalities.
Collapse
Affiliation(s)
- Mayumi Shoji
- Department of Obstetrics and Gynaecology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan
| | - Toshio Hamatani
- Department of Obstetrics and Gynaecology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan
| | - Shoko Ishikawa
- 1] Department of Obstetrics and Gynaecology, Tokyo Women's Medical University, 8-1 Kawadacho Shinjuku-ku, Tokyo 162-8666, Japan [2] Ginza Ladies Clinic Institute for Reproductive Medicine, 4-6-11 Ginza Chuo-ku, Tokyo 104-0045, Japan
| | - Naoaki Kuji
- Department of Obstetrics and Gynaecology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan
| | - Hiroaki Ohta
- Women's Medical Centre of Sanno Medical Centre, 8-5-35 Akasaka Minato-ku, Tokyo 107-0052, Japan
| | - Hideo Matsui
- Department of Obstetrics and Gynaecology, Tokyo Women's Medical University, 8-1 Kawadacho Shinjuku-ku, Tokyo 162-8666, Japan
| | - Yasunori Yoshimura
- Department of Obstetrics and Gynaecology, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo 160-8582, Japan
| |
Collapse
|
27
|
Labrecque R, Sirard MA. The study of mammalian oocyte competence by transcriptome analysis: progress and challenges. Mol Hum Reprod 2013; 20:103-16. [DOI: 10.1093/molehr/gat082] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
28
|
Baldwin MK, Jensen JT. Contraception during the perimenopause. Maturitas 2013; 76:235-42. [DOI: 10.1016/j.maturitas.2013.07.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 07/12/2013] [Accepted: 07/13/2013] [Indexed: 10/26/2022]
|
29
|
Bed rest after embryo transfer negatively affects in vitro fertilization: a randomized controlled clinical trial. Fertil Steril 2013; 100:729-35. [DOI: 10.1016/j.fertnstert.2013.05.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 05/02/2013] [Accepted: 05/09/2013] [Indexed: 11/22/2022]
|
30
|
Abstract
Many regard childbearing as the most life-changing and perhaps the most desirable aspect of a women's life. Correspondingly, reduced fertility has a significant negative impact on a woman and her family. To this end, gynecologists work to preserve and restore fertility. Recently, however, in developed countries, more women are becoming pregnant later in life, whether by choice or circumstance. This could be a direct result of the increasing availability of both effective contraception and infertility treatment, but perhaps more pertinently the changing lifestyles and career choices that modern women make. This article offers a perspective on pregnancy after the age of 40, the impact on maternal and fetal outcomes, the social implications and the importance of prenatal counseling.
Collapse
Affiliation(s)
- Sameena Kausar
- Guys and St. Thomas Hospital, Women's Services, 10th floor North Wing, St Thomas' Hospital, Lambeth Palace Road, London SE1 7EH, UK.
| | | |
Collapse
|
31
|
Determinants of uterine aging: lessons from rodent models. SCIENCE CHINA-LIFE SCIENCES 2012; 55:687-93. [PMID: 22932884 DOI: 10.1007/s11427-012-4356-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 06/26/2012] [Indexed: 10/27/2022]
Abstract
The uterus is an indispensable organ for the development of a new life in eutherian mammals. The female mammalian reproductive capacity diminishes with age. In this respect, the senescence of uterine endometrium is convinced to contribute to this failure. This review focuses on the physiological function of the uterus and the related influence of aging mainly in rodent models. A better understanding of the underlying mechanisms governing the process of uterine aging is hoped to generate new strategies to prolong the reproductive lifespan in humans.
Collapse
|
32
|
Li Q, Geng X, Zheng W, Tang J, Xu B, Shi Q. Current understanding of ovarian aging. SCIENCE CHINA-LIFE SCIENCES 2012; 55:659-69. [PMID: 22932881 DOI: 10.1007/s11427-012-4352-5] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2012] [Accepted: 06/22/2012] [Indexed: 02/07/2023]
Abstract
The reproductive system of human female exhibits a much faster rate of aging than other body systems. Ovarian aging is thought to be dominated by a gradual decreasing numbers of follicles, coinciding with diminished quality of oocytes. Menopause is the final step in the process of ovarian aging. This review focuses on the mechanisms underlying the ovarian aging involving a poor complement of follicles at birth and a high rate of attrition each month, as well as the alternated endocrine factors. We also discuss the possible causative factors that contribute to ovarian aging, e.g., genetic factors, accumulation of irreparable damage of microenvironment, pathological effect and other factors. The appropriate and reliable methods to assess ovarian aging, such as quantification of follicles, endocrine measurement and genetic testing have also been discussed. Increased knowledge of the ovarian aging mechanisms may improve the prevention of premature ovarian failure.
Collapse
Affiliation(s)
- Qian Li
- Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, 230027, China
| | | | | | | | | | | |
Collapse
|
33
|
Funahashi H. What is the optimal condition for fertilization of IVM oocytes? Reprod Med Biol 2012; 12:15-20. [PMID: 29662366 DOI: 10.1007/s12522-012-0134-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 07/26/2012] [Indexed: 11/25/2022] Open
Abstract
Application of in vitro maturation (IVM) is recently increasing for human infertility, especially to rescue patients of polycystic ovarian syndrome and ovarian hyperstimulation syndrome. To increase the application of IVM oocytes for embryo production and the efficiency of successful production of babies using IVM oocytes, quality control of oocytes and achievement of fertilization in the most suitable condition may be very important. In this paper, suitable conditions for fertilization of IVM oocytes will be discussed with recent knowledge about IVM and in vitro fertilization of oocytes in domestic animals. Currently, human oocytes are collected mainly from patients' ovaries 36 h following mild gonadotropin stimulation and used for IVM for 24-26 h. However, asynchronous progression of those oocytes to reach the metaphase-II stage may have occurred during the IVM culture. In the oocytes that have already progressed to the metaphase-II stage, sudden aging such as reduction in maturation promoting factor and MAP kinases will start to occur. Application of specific inhibitors of phosphodiesterase to control intracellular cAMP (cyclic adenosine monophosphate) level may be effective to synchronize timings of the germinal vesicle breakdown and consequently the meiotic progression of oocytes, and to improve the developmental competence. Furthermore, treatment of aging oocytes with caffeine appears to rescue them from reductions in maturation promoting factor and MAP kinases and to improve the developmental competence. Assessment methods to select oocytes with good quality may also be important to improve the successful rates.
Collapse
Affiliation(s)
- Hiroaki Funahashi
- Department of Animal Science Okayama University Tsushima-Naka, Kita-Ku 700-8530 Okayama Japan
| |
Collapse
|
34
|
Berlinguer F, Gonzalez-Bulnes A, Spezzigu A, Contreras-Solis I, Succu S, McNeilly AS, Naitana S, Leoni GG. Effect of aging on follicular function may be relieved by exogenous gonadotropin treatment in a sheep model. Reproduction 2012; 144:245-55. [PMID: 22685252 DOI: 10.1530/rep-12-0030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The current study investigated hormonal and ovarian changes during physiological reproductive aging in Sarda ewes. In a first experiment, follicular and corpus luteum dynamics were compared during an induced oestrus cycle in aged (12-14 years) and young adult ewes (4-5 years). Oestrus cycle characteristics did not differ between the two experimental groups. However, follicular function during the follicular phase showed significant alterations in aged ewes, as determined by a lack of dominance effect and by lower mean values of circulating oestradiol (E(2)) and inhibin levels, compared with young adult ewes. In a second experiment, differences in follicle growth, hormonal milieu and oocyte quality in response to exogenous FSH administration were assessed in aged and adult ewes. No differences were recorded in ovarian response to FSH treatment between young adult and aged ewes, as evaluated by ultrasonographic data and circulating concentrations of LH, E(2) and inhibin-A. Although the total number of recovered oocytes was similar in the two age groups, the number of good quality oocytes selected for IVM was significantly lower in aged ewes compared with adult ones. Thereafter, no differences were recorded in cleavage rates, total blastocyst output, embryo developmental kinetic and quality between aged and adult groups. In conclusion, this study demonstrated that reproductive aging in sheep is associated with impaired follicle functionality and an increase in the proportion of oocytes showing morphological abnormalities. However interestingly, oocyte developmental competence in vitro and embryo cryotolerance were not affected by the aging process, when only good quality oocytes were chosen.
Collapse
Affiliation(s)
- Fiammetta Berlinguer
- Department of Animal Biology, University of Sassari, Via Vienna 2, 07100 Sassari, Italy.
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Jiao ZX, Xu M, Woodruff TK. Age-associated alteration of oocyte-specific gene expression in polar bodies: potential markers of oocyte competence. Fertil Steril 2012; 98:480-6. [PMID: 22633262 DOI: 10.1016/j.fertnstert.2012.04.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 04/22/2012] [Accepted: 04/24/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVE To confirm that oocyte-specific messenger RNAs are detectable in the polar body (PB) of metaphase II (MII) oocytes and determine the effect of age on oocyte-specific transcript levels. DESIGN Prospective study. SETTING Hospital-based academic research laboratory. ANIMAL(S) CD1 female mice. INTERVENTION(S) Aged (40-50 weeks) and young (7-9 weeks) mice were administered pregnant mare serum gonadotropin (PMSG) and hCG. Oocytes were fertilized in vitro to assess fertilization and developmental competence. The MII oocytes were obtained and first PBs were removed. Messenger RNAs from each PB and its sibling oocyte were reverse transcribed and analyzed by real-time quantitative polymerase chain reaction (PCR). MAIN OUTCOME MEASURE(S) Fertilization and developmental rates and expression of six oocyte-specific genes (Bmp15, Gdf9, H1foo, Nlrp5, Tcl1, and Zp3) in PBs and sibling oocytes from young versus aged mice. RESULT(S) Oocytes from aged mice had lower developmental competence. Four genes (H1foo, Nlrp5, Tcl1, and Zp3) were differentially expressed in aged versus young oocytes. All six transcripts were present in PBs from aged and young mice at lower levels than in the sibling oocytes; transcript levels were lower in aged PBs compared with young PBs. CONCLUSION(S) There is a significant difference in the transcript levels of oocyte-specific genes in aged versus young PB that correlates with age-related decreases in oocyte competence. Differences in gene expression in PB may be potential biomarkers of MII oocyte competence.
Collapse
Affiliation(s)
- Ze-Xu Jiao
- Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA
| | | | | |
Collapse
|
36
|
Adams GP, Singh J, Baerwald AR. Large animal models for the study of ovarian follicular dynamics in women. Theriogenology 2012; 78:1733-48. [PMID: 22626769 DOI: 10.1016/j.theriogenology.2012.04.010] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 04/11/2012] [Accepted: 04/17/2012] [Indexed: 02/05/2023]
Abstract
Initial studies of the ovaries were based on postmortem anatomic descriptions, followed by histologic and endocrine approaches. The introduction of high-resolution ultrasonography provided a long-awaited tool to image the reproductive tissues in situ in both animals and humans. Critical studies of the characteristics and control of ovarian follicular and luteal dynamics in nonhuman primates, rodents, and domestic farm animals have involved frequent (i.e., daily or multiple times a day) blood sampling and ultrasonography. Studies of this nature in women are difficult, and often unethical to conduct. Differences in antral folliculogenesis between humans and animals appear to be more in detail rather than in essence, and may reflect differences in intrinsic physiology or merely differences in our ability to detect changes in a given species. In women, the presence of endometrial shedding and symmetric luteal and follicular phases are different from that observed during the estrous cycles of domestic farm animals but despite these differences, general similarities in antral follicular dynamics exist. A continuous pattern of antral follicle development was originally proposed in domestic livestock species; however, the use of frequent serial ultrasonography and simultaneous endocrine profiling in these animal species has resulted in a broad understanding of follicular wave dynamics. Follicular waves have now been described in every species in which this approach has been used, including humans. The relatively large diameters of antral follicles in cows and mares, compared with monkeys, sheep, and rodents provide greater feasibility for characterizing antral follicular dynamics ultrasonographically. While the use of large animal models has increased our understanding of ovarian function and provides the hypothetical basis for studies in women, differences in vocabulary, culture, and research methodologies has hampered knowledge translation. These differences represent a systemic impediment to a broad understanding of ovarian function and limits progress and innovation in the development of safer and more efficacious treatments for infertility and contraception.
Collapse
Affiliation(s)
- G P Adams
- Department of Veterinary Biomedical Sciences, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
| | | | | |
Collapse
|
37
|
Yue MX, Fu XW, Zhou GB, Hou YP, DU M, Wang L, Zhu SE. Abnormal DNA methylation in oocytes could be associated with a decrease in reproductive potential in old mice. J Assist Reprod Genet 2012; 29:643-50. [PMID: 22618193 DOI: 10.1007/s10815-012-9780-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Accepted: 04/24/2012] [Indexed: 12/28/2022] Open
Abstract
PURPOSE This study was designed to evaluate DNA methylation and the expression of DNA methyltransferases (Dnmt1, Dnmt3a, Dnmt3b and Dnmt3L) in metaphaseII (MII) oocytes and the DNA methylation of pre-implantation embryos during mouse aging to address whether such aging-related changes are associated with decreased reproductive potential in aged mice. METHODS Oocytes (MII) from 6 to 8 weeks old female mice are referred to as the 'young group'; oocytes from the same group that were maintained until 35-40 weeks old are referred to as the 'old group.' The oocytes were fertilized both in vitro and in vivo to obtain embryos. The DNA methylation levels in the oocytes (MII) and pre-implantation embryos were assessed using fluorescence staining. The expression levels of the Dnmt genes in the oocytes (MII) were assessed using Western blotting. RESULTS The DNA methylation levels in the oocytes and pre-implantation embryos (in vivo and in vitro) decreased significantly during the aging of the mice. The expression levels of all of the examined Dnmt proteins in the old group were lower than young group. Both the cleavage and blastocyst rate were significantly lower in the oocytes of the older mice (69.9 % vs. 80.9 %, P < 0.05; 33.9 % vs. 56.4 %, P < 0.05). The pregnancy rate of the old mice was lower than that of the young mice (46.7 % vs. 100 %, P < 0.05). The stillbirth and fetal malformation rate was significantly higher in the old group than in the young group (17.2 % vs. 2.9 %, P < 0.05). CONCLUSIONS The decreased expression of Dnmt1, Dnmt3a, Dnmt3b and Dnmt3L in oocytes (MII) and the change of genome-wide DNA methylation in oocytes and pre-implantation embryos due to aging may be related to lower reproductive potential in old female mice.
Collapse
Affiliation(s)
- Ming-xing Yue
- Key Laboratory of Animal Genetics, Breeding and Reproduction, Ministry of Agriculture and National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
38
|
Zhang L, Lu DY, Ma WY, Li Y. Age-related changes in the localization of DNA methyltransferases during meiotic maturation in mouse oocytes. Fertil Steril 2011; 95:1531-4.e1. [DOI: 10.1016/j.fertnstert.2010.06.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 06/09/2010] [Accepted: 06/16/2010] [Indexed: 01/27/2023]
|
39
|
Small CM, Manatunga AK, Klein M, Dominguez CE, Feigelson HS, McChesney R, Marcus M. Menstrual cycle variability and the likelihood of achieving pregnancy. REVIEWS ON ENVIRONMENTAL HEALTH 2010; 25:369-378. [PMID: 21268451 DOI: 10.1515/reveh.2010.25.4.369] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The menstrual cycle is an important indicator of underlying hormonal function. Although menstrual cycle variability (sometimes referred to as 'regularity') is associated with a variety of demographic, behavioral, occupational, and environmental factors, as well as with several chronic diseases, few studies have examined its association with fecundity. We investigated whether a woman's menstrual cycle variability was associated with the likelihood of her achieving pregnancy. In this prospective study, we analyzed 3,536 menstrual cycles from 401 women (aged 19-41) recruited from 1990-1994. The women provided daily diaries recording menstrual bleeding, intercourse, and birth control use. Urine samples were assayed for human chorionic gonadotropin to identify early pregnancies during each menstrual cycle. Each woman's menstrual cycle variability was defined by the standard deviation of her cycle lengths during followup. The median follow-up was eight cycles. The outcome was her per-cycle probability of pregnancy. We found that women with high menstrual cycle variability had a reduced (51% lower) per cycle probability of pregnancy (fecundity ratio: 0.49; 95% confidence interval: 0.31, 0.77) compared with women with minimal variability. This relationship was independent of a woman's age and her mean cycle length. Thus, researchers and clinicians using menstrual cycle characteristics as indicators of endocrine or reproductive health should include measures of cycle variability in addition to the more commonly examined cycle length.
Collapse
Affiliation(s)
- Chanley M Small
- Department of Epidemiology, Emory University, Atlanta, GA 30322, USA.
| | | | | | | | | | | | | |
Collapse
|
40
|
Cryo-survival, fertilization and early embryonic development of vitrified oocytes derived from mice of different reproductive age. J Assist Reprod Genet 2010; 27:605-11. [PMID: 20640502 DOI: 10.1007/s10815-010-9450-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 06/14/2010] [Indexed: 10/19/2022] Open
Abstract
PURPOSE to evaluate the effect of female reproductive age on oocyte cryo-survival, fertilization and the subsequent embryonic development following vitrification using the mouse model in order to address the question of how maternal reproductive age is related to fertility preservation. METHODS oocytes were collected from mice of different reproductive age: (1) 8-10 weeks, (2) 16-20 weeks, (3) 32-36 weeks, and (4) 44-48 weeks. Following vitrification and warming, the oocytes in each group were assessed for cryo-survival, fertilization and embryonic development as well as for the quality of blastocysts. Fresh oocytes without undergoing vitrification were used in each age group as controls. RESULTS the mean number of oocytes retrieved following superovulation was found to reduce significantly (P < 0.05) in mice from 32-36 weeks of age (18.1 ± 8.5) compared with 8-10 weeks of age (26.8 ± 9.8) and 16-20 weeks of age (23.9 ± 4.2) respectively. The cryo-survival rate of oocytes was reduced significantly (P < 0.05) in mice of 44-48 weeks of age (90.4% ± 7.9) compared with the other 3 groups (98.8% ± 2.1, 98.0% ± 3.3 and 98.5% ± 2.2, respectively). The cleavage rate of vitrified oocytes declined significantly following the increase in maternal age in mice of 32-36 weeks of age (69.7% ± 20.8) forward (63.6% ± 9.2). However, no significant difference in the cleavage rate was found among the control groups of different maternal ages. The rate of embryo development to the blastocyst stage in the vitrified oocytes also significantly declined following the increase in maternal age (71.8% ± 8.8, 66.4% ± 10.7, 64.2% ± 17.4 and 4.1% ± 8.3 respectively). There were no such differences in the rates of embryo development to the blastocyst stage among the control groups following the increase in maternal age (75.9% ± 12.2, 79.5% ± 28.9, 70.2% ± 17.4 and 69.3% ± 19.0 respectively). However, the quality of blastocysts produced from 32-36 weeks and 44-48 weeks of ages was significantly poor in term of total cell numbers and the ratio of inner cell mass(ICM) / trophectoderm (TE) compared to younger age in both vitrified and control groups CONCLUSIONS cryo-survival of oocytes following vitrification and warming procedures is associated with female reproductive age. There is a more negative impact on the oocytes following vitrification and warming with the increase of maternal age.
Collapse
|
41
|
Long-term effects of uterine fibroid embolization on ovarian reserve: a prospective cohort study. Fertil Steril 2010; 94:2296-300. [PMID: 20074724 DOI: 10.1016/j.fertnstert.2009.12.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2009] [Revised: 11/30/2009] [Accepted: 12/01/2009] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To determine whether uterine fibroid embolization may advance ovarian follicular depletion in reproductive-aged women with apparently normal baseline ovarian function. DESIGN Prospective cohort study. SETTING University tertiary care center. PARTICIPANT(S) Thirty-six patients aged 26 to 39 years with fibroids, regular menstrual cycles, and day 3 serum FSH levels<10 mIU/mL and 36 matched control women. INTERVENTION(S) Day 3 serum FSH and E2 levels and ultrasound-based antral follicle count and ovarian volume were determined before (baseline) and at 12, 24, 36, 48, and 60 months after embolization and compared with those of the control group. Menstrual status was determined annually on the basis of prospectively recorded menstrual calendars. MAIN OUTCOME MEASURE(S) Longitudinal changes in hormone levels, ultrasound measures, and bleeding patterns. RESULT(S) Although the FSH and E2 levels increased significantly and the antral follicle count and ovarian volume values declined significantly over time within the groups, no significant differences were found between the groups. The cycle remained regular in all but two women (one in the embolization group and one in the control group), who started having cycle irregularity after 24 months and 36 months follow-up, respectively. CONCLUSION(S) This long-term follow-up study suggests that fibroid embolization does not lead to an accelerated decline in ovarian reserve in younger patients.
Collapse
|
42
|
Luo S, Shaw WM, Ashraf J, Murphy CT. TGF-beta Sma/Mab signaling mutations uncouple reproductive aging from somatic aging. PLoS Genet 2009; 5:e1000789. [PMID: 20041217 PMCID: PMC2791159 DOI: 10.1371/journal.pgen.1000789] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 11/24/2009] [Indexed: 01/07/2023] Open
Abstract
Female reproductive cessation is one of the earliest age-related declines humans experience, occurring in mid-adulthood. Similarly, Caenorhabditis elegans' reproductive span is short relative to its total life span, with reproduction ceasing about a third into its 15–20 day adulthood. All of the known mutations and treatments that extend C. elegans' reproductive period also regulate longevity, suggesting that reproductive span is normally linked to life span. C. elegans has two canonical TGF-ß signaling pathways. We recently found that the TGF-ß Dauer pathway regulates longevity through the Insulin/IGF-1 Signaling (IIS) pathway; here we show that this pathway has a moderate effect on reproductive span. By contrast, TGF-ß Sma/Mab signaling mutants exhibit a substantially extended reproductive period, more than doubling reproductive span in some cases. Sma/Mab mutations extend reproductive span disproportionately to life span and act independently of known regulators of somatic aging, such as Insulin/IGF-1 Signaling and Dietary Restriction. This is the first discovery of a pathway that regulates reproductive span independently of longevity and the first identification of the TGF-ß Sma/Mab pathway as a regulator of reproductive aging. Our results suggest that longevity and reproductive span regulation can be uncoupled, although they appear to normally be linked through regulatory pathways. Female reproductive cessation is the earliest aging phenotype humans experience, and its importance as a clinical issue is growing as more women opt to have children later in life. While much work has been done to understand the general aging process, little is currently known about the regulation of reproductive aging. Like longevity, the ability to produce progeny with advanced age is likely to be genetically regulated. Thus, understanding the processes that regulate reproductive aging may allow us to address the problems of maternal age-related infertility and birth defects. C. elegans and humans both have long post-reproductive life spans, leaving open the possibility that their reproductive spans might be extendable. C. elegans has been used previously to discover conserved regulators of aging, and here we use worms to identify a new regulator of reproductive aging, a highly conserved TGF-ß signaling pathway. We find that TGF-ß signaling regulates reproductive aging independently of somatic aging. This is the first identification of a pathway that breaks the coupling that normally links the two processes. Our work will provide new insights into the improvement of human fertility and prevention of age-related birth defects, and it has implications for the evolutionary relationship between reproduction and longevity regulation.
Collapse
Affiliation(s)
- Shijing Luo
- Lewis-Sigler Institute for Integrative Genomics and Department of Molecular Biology, Princeton University, Princeton, New Jersey, USA
| | | | | | | |
Collapse
|
43
|
|
44
|
Atsalis S, Videan E. Reproductive aging in captive and wild common chimpanzees: factors influencing the rate of follicular depletion. Am J Primatol 2009; 71:271-82. [PMID: 19067363 DOI: 10.1002/ajp.20650] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We examine and discuss evidence of contrasting differences in fertility patterns between captive and wild female chimpanzees, Pan troglodytes, as they age; in the wild females reproduce in their 40s, but captive studies suggest that menopause occurs around that time. Thus, despite the increased longevity generally observed in captive populations reproductive life span is shortened. We outline a hypothesis to explain the apparent differential pace of reproductive decline observed between wild and captive populations. The breeding schedules of captive primates may contribute to accelerated reproductive senescence because continuous cycling in captive animals results in early depletion of the ovarian stock and premature senescence. Available evidence supports the hypothesis that women with patterns of high oocyte loss experience earlier menopause. Chimpanzees in captivity live longer, and thus, similar to humans, they may experience follicular depletion that precedes death by many years. In captivity, chimpanzees typically have an early age at menarche and first birth, shorter interbirth intervals associated with short lactational periods as young mature faster, and nursery rearing, which allows mothers to begin cycling earlier. Variables typical of wild chimpanzee populations, including late age at menarche and first birth, long interbirth intervals associated with prolonged lactational periods, and a long period of female infertility after immigration, spare ovulations and may be responsible for the later age at reproductive termination. Finally, we describe and discuss the timing of specific reproductive landmarks that occur as female chimpanzees age, distinguishing between functional menopause (age at last birth) and operational menopause (end of cycling).
Collapse
Affiliation(s)
- Sylvia Atsalis
- School of Human Evolution and Social Change, Arizona State University, Tempe, Arizona, USA.
| | | |
Collapse
|
45
|
Ramalho-Santos J, Varum S, Amaral S, Mota PC, Sousa AP, Amaral A. Mitochondrial functionality in reproduction: from gonads and gametes to embryos and embryonic stem cells. Hum Reprod Update 2009; 15:553-72. [DOI: 10.1093/humupd/dmp016] [Citation(s) in RCA: 308] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|
46
|
The role of tubal reconstructive surgery in the era of assisted reproductive technologies. Fertil Steril 2008; 90:S250-3. [PMID: 19007640 DOI: 10.1016/j.fertnstert.2008.08.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2006] [Revised: 07/28/2006] [Accepted: 07/28/2006] [Indexed: 11/27/2022]
Abstract
Tubal reconstructive surgery has fewer indications in the era of assisted reproductive technologies than in the past, but is still appropriate and effective treatment for properly selected individuals.
Collapse
|
47
|
Amenorrhea and resumption of menstruation after uterine artery embolization for fibroids. Int J Gynaecol Obstet 2008; 103:217-21. [PMID: 18768179 DOI: 10.1016/j.ijgo.2008.07.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2008] [Revised: 07/07/2008] [Accepted: 07/24/2008] [Indexed: 11/21/2022]
Abstract
OBJECTIVES To determine whether women will experience permanent amenorrhea following uterine artery embolization for fibroids, and whether rates of onset differ in the long term according to age at the time of the procedure. METHODS Over 77 months, 211 consecutive eligible women were grouped by age (group A, <40 years [n=39]; group B, 40-44 years [n=98]; and group C, > or =45 years [n=74]) and the cumulative rates of onset of permanent amenorrhea were compared between the groups. RESULTS The likelihood of incurring permanent amenorrhea was significantly higher in group C. The cumulative rates in groups A, B, and C were 0%, 1.4%, and 19.7% at 3 years and 0%, 11.2%, and 40.4% at 6 years. CONCLUSION The rates of onset of permanent amenorrhea changed over time and differed according to age at the time of the procedure, with little likelihood of permanent amenorrhea at 6 years for women younger than 40 years at the time of the procedure.
Collapse
|
48
|
Gene expression in women conceiving spontaneously over the age of 45 years. Fertil Steril 2008; 89:1641-50. [DOI: 10.1016/j.fertnstert.2007.06.058] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 06/04/2007] [Accepted: 06/04/2007] [Indexed: 01/13/2023]
|
49
|
Hamatani T, Yamada M, Akutsu H, Kuji N, Mochimaru Y, Takano M, Toyoda M, Miyado K, Umezawa A, Yoshimura Y. What can we learn from gene expression profiling of mouse oocytes? Reproduction 2008; 135:581-92. [DOI: 10.1530/rep-07-0430] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mammalian ooplasm supports the preimplantation development and reprograms the introduced nucleus transferred from a somatic cell to confer pluripotency in a cloning experiment. However, the underlying molecular mechanisms of oocyte competence remain unknown. Recent advances in microarray technologies have allowed gene expression profiling of such tiny specimens as oocytes and preimplantation embryos, generating a flood of information about gene expressions. So, what can we learn from it? Here, we review the initiative global gene expression studies of mouse and/or human oocytes, focusing on the lists of maternal transcripts and their expression patterns during oogenesis and preimplantation development. Especially, the genes expressed exclusively in oocytes should contribute to the uniqueness of oocyte competence, driving mammalian development systems of oocytes and preimplantation embryos. Furthermore, we discuss future directions for oocyte gene expression profiling, including discovering biomarkers of oocyte quality and exploiting the microarray data for ‘making oocytes’.
Collapse
|
50
|
Ginther OJ, Gastal MO, Gastal EL, Jacob JC, Siddiqui MAR, Beg MA. Effects of age on follicle and hormone dynamics during the oestrous cycle in mares. Reprod Fertil Dev 2008; 20:955-63. [DOI: 10.1071/rd08121] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2008] [Accepted: 09/03/2008] [Indexed: 12/18/2022] Open
Abstract
The effects of age (young: 5–6 years; intermediate: 10–14 years; old: ≥18 years) on follicle and hormone dynamics during an interovulatory interval (IOI; n = 46) and on preovulatory oocytes and concentrations of follicular fluid factors (n = 44) were studied in mares. Old mares were not approaching senescence, as indicated by regular lengths of the IOI (19–27 days) during the period May–October. The IOI was 1 day longer (P < 0.05) in the old group than in the two younger groups and was associated with a slower (P < 0.05) growth rate of the ovulatory follicle. The old group had diminished follicle activity, as indicated by significantly smaller and fewer follicles. Concentrations of FSH did not differ among age groups, except that the maximum concentration was greater (P < 0.05) in the old group. Concentrations of LH were greater (age × day interaction; P < 0.03) in the young group throughout the ovulatory LH surge and may have played a role in a shorter (P < 0.05) interval from maximum diameter of the preovulatory follicle to ovulation. Maximum circulating concentrations of oestradiol during the preovulatory surge were greatest (P < 0.05) in the young group. No effects of age were detected on oocyte morphology. Concentrations of ovarian steroids in preovulatory follicular fluid were not affected by the age of the mares, but concentrations of free insulin-like growth factor-1 were greater (P < 0.05) in the old group. The results indicate the importance of considering the potential confounding effects of age in experimental protocols and for considering age in the development of theriogenology programmes.
Collapse
|