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Calis P, Seymen M, Soykan Y, Delen K, Aral BS, Take Kaplanoglu G, Karcaaltincaba D. Does Exposure of Smart Phones during Pregnancy Affect the Offspring's Ovarian Reserve? A Rat Model Study. Fetal Pediatr Pathol 2021; 40:142-152. [PMID: 31820670 DOI: 10.1080/15513815.2019.1692112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We investigated the effect of prenatal exposure to smart phone radiation and the protective effect of omega-3 on ovarian reserve of offspring. Methods: 24 pregnant Wistar albino rats were divided into four groups. Group-I received neither radiofrequency (RF) radiation nor omega-3, group-II received RF, group-III received RF radiation and 300 mg omega-3 and group-IV received RF radiation and 600 mg Omega-3 till birth. At 42 days, bilateral oophorectomy was performed on all female offspring for follicle count and immunohistochemical staining (GDF9, FOXO1 and TUNEL). Results: Group-II had significantly lower mean number of primordial (p = 0.006), secondary follicles(p = 0.003) and a higher atresia score. Group-III variables were comparable with group-I variables. Group-IV had statistically higher median number of atretic follicles than group-I (p = 0.023). Conclusions: Ovarian reserve of offspring diminished with RF exposure during pregnancy. Omega-3 supplementation during pregnancy may reduce the potential premature ovarian failure.
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Affiliation(s)
- Pinar Calis
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Gazi University, Ankara, Turkey
| | - Merve Seymen
- Department of Histology and Embryology, Gazi University, Ankara, Turkey
| | - Yagmur Soykan
- Department of Obstetrics and Gynecology, Gazi University, Ankara, Turkey
| | - Kevser Delen
- Department of Biophysics, Gazi University, Ankara, Turkey
| | | | | | - Deniz Karcaaltincaba
- Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Gazi University, Ankara, Turkey
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Meinsohn MC, Hughes CHK, Estienne A, Saatcioglu HD, Pépin D, Duggavathi R, Murphy BD. A role for orphan nuclear receptor liver receptor homolog-1 (LRH-1, NR5A2) in primordial follicle activation. Sci Rep 2021; 11:1079. [PMID: 33441767 PMCID: PMC7807074 DOI: 10.1038/s41598-020-80178-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/17/2020] [Indexed: 02/07/2023] Open
Abstract
Liver receptor homolog-1 (NR5A2) is expressed specifically in granulosa cells of developing ovarian follicles where it regulates the late stages of follicle development and ovulation. To establish its effects earlier in the trajectory of follicular development, NR5A2 was depleted from granulosa cells of murine primordial and primary follicles. Follicle populations were enumerated in neonates at postnatal day 4 (PND4) coinciding with the end of the formation of the primordial follicle pool. The frequency of primordial follicles in PND4 conditional knockout (cKO) ovaries was greater and primary follicles were substantially fewer relative to control (CON) counterparts. Ten-day in vitro culture of PND4 ovaries recapitulated in vivo findings and indicated that CON mice developed primary follicles in the ovarian medulla to a greater extent than did cKO animals. Two subsets of primordial follicles were observed in wildtype ovaries: one that expressed NR5A2 and the second in which the transcript was absent. Neither expressed the mitotic marker. KI-67, indicating their developmental quiescence. RNA sequencing on PND4 demonstrated that loss of NR5A2 induced changes in 432 transcripts, including quiescence markers, inhibitors of follicle activation, and regulators of cellular migration and epithelial-to-mesenchymal transition. These experiments suggest that NR5A2 expression poises primordial follicles for entry into the developing pool.
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Affiliation(s)
- Marie-Charlotte Meinsohn
- Centre de recherche en reproduction et fertilité, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC, J2S 7C6, Canada
| | - Camilla H K Hughes
- Centre de recherche en reproduction et fertilité, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC, J2S 7C6, Canada
| | - Anthony Estienne
- Centre de recherche en reproduction et fertilité, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC, J2S 7C6, Canada
| | - Hatice D Saatcioglu
- Pediatric Surgical Research Laboratories, Simches Research Center, Massachusetts General Hospital, 185 Cambridge St., Boston, MA, 02114, USA
| | - David Pépin
- Pediatric Surgical Research Laboratories, Simches Research Center, Massachusetts General Hospital, 185 Cambridge St., Boston, MA, 02114, USA
| | - Raj Duggavathi
- Department of Animal Science, McGill University, 21111 Lakeshore Rd., MS1085, Ste-Anne de Bellevue, QC, H9X 3V9, Canada
| | - Bruce D Murphy
- Centre de recherche en reproduction et fertilité, Université de Montréal, 3200 rue Sicotte, St-Hyacinthe, QC, J2S 7C6, Canada.
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Jazwiec PA, Li X, Matushewski B, Richardson BS, Sloboda DM. Fetal Growth Restriction Is Associated With Decreased Number of Ovarian Follicles and Impaired Follicle Growth in Young Adult Guinea Pig Offspring. Reprod Sci 2019; 26:1557-1567. [PMID: 30744513 DOI: 10.1177/1933719119828041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND The mechanisms mediating the impacts of fetal growth restriction (FGR) on follicular development are commonly studied in mouse/rat models, where ovarian development occurs largely during the early postnatal period. These models have shown that FGR is associated with premature follicle loss, early pubertal onset, and accelerated ovarian aging. Whether the same occurs in precocious species is unknown. OBJECTIVE Since guinea pig follicle development occurs in utero in a manner consistent with human ovarian development, we sought to determine whether FGR had similar impacts on guinea pig ovarian development. METHODS Dunkin-Hartley guinea pig dams were randomized to receive a control (CON) or a nutrient-restricted diet (FGR) prior to conception until weaning. Offspring ovaries were collected at prepubertal (postnatal day [P] 25) and young adult (P110) time points. RESULTS Prepubertal offspring exposed to FGR showed little differences in ovarian transcript levels and follicle counts. Young adult FGR offspring, however, showed reductions in the number of transitioning, primary, and antral follicles, as well as corpora lutea. This loss in follicles was associated with reduced insulin-like growth factor receptor and growth differentiation factor-9 messenger RNA levels in FGR P110 offspring compared to CON. CONCLUSION We demonstrate that FGR in guinea pigs is accompanied by perturbations in signaling pathways essential for proper follicle growth and manifests as reductions in growing follicles in offspring, but these changes do not manifest until postpuberty. These data support the fact that accelerated reproductive maturation/aging is a conserved phenotype that is associated with in utero nutritional adversity.
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Affiliation(s)
- Patrycja A Jazwiec
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Xinglin Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
| | - Brad Matushewski
- Department of Obstetrics and Gynecology, University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
- Children's Health Research Institute, University of Western Ontario, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Bryan S Richardson
- Department of Obstetrics and Gynecology, University of Western Ontario, London, Ontario, Canada
- Department of Physiology and Pharmacology, University of Western Ontario, London, Ontario, Canada
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
- Children's Health Research Institute, University of Western Ontario, London, Ontario, Canada
- Schulich School of Medicine and Dentistry, University of Western Ontario, London, Ontario, Canada
| | - Deborah M Sloboda
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Canada
- Departments of Pediatrics and Obstetrics and Gynecology, McMaster University, Hamilton, Canada
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, Canada
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Garrido MP, Fernandois D, Venegas M, Paredes AH. Effects of sympathectomy on ovarian follicular development and steroid secretion. Reproduction 2018; 155:173-181. [DOI: 10.1530/rep-17-0318] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 11/14/2017] [Accepted: 11/21/2017] [Indexed: 11/08/2022]
Abstract
Recently, the influence of adrenergic activity over ovarian function, and thus fertility, has begun to gain importance. Previous studies have shown that adrenergic activity through norepinephrine (NE) participates in the control of follicular development and steroidal secretion from the ovary, among other functions. To examine this phenomenon, the denervation of the gonad has been widely used to observe changes in the ovary’s performance. Nevertheless, the effect of the absence of adrenergic nerves in the ovary has only been studied in short times periods. In the present work, we used guanethidine (a drug that produces an irreversible sympathectomy) during the infantile period of rats, and we observed its effects in the adult rat (6 months old). Our results indicate that ovarian NE content is recovered at 6 months old, alongside with an increase of the adrenal content of NE and a dysfunctional celiac ganglion. Together, these results suggest that the recovery of ovarian NE does not come from a neural origin. In addition, ovarian performance was impaired because the changes in follicular development and steroidal secretion are not recovered despite the recovery of ovarian NE content. In conclusion, these results suggest that the nerve–ovarian connections, which are established during infantile development, are necessary for the accurate response of the ovary to sympathetic stimulation.
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Affiliation(s)
- Maritza P Garrido
- 1Department of Biochemistry and Molecular Biology, Laboratory for Neurobiochemistry Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile
- 2Department of Obstetrics and Gynecology, Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital University of Chile, Clinical Hospital, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Daniela Fernandois
- 1Department of Biochemistry and Molecular Biology, Laboratory for Neurobiochemistry Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile
| | - Mauricio Venegas
- 3Sección de Gastroenterología, Hospital Clínico Universidad de Chile, Santiago, Chile
| | - Alfonso H Paredes
- 1Department of Biochemistry and Molecular Biology, Laboratory for Neurobiochemistry Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile
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Abdel-Ghani MA, El-sherry TM, Abdelhafeez HH. Effect of growth differentiation factor-9 (GDF-9) on the progression of buffalo follicles in vitrified-warmed ovarian tissues. Reprod Domest Anim 2016; 51:795-803. [DOI: 10.1111/rda.12753] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 07/12/2016] [Indexed: 11/30/2022]
Affiliation(s)
- MA Abdel-Ghani
- Department of Theriogenology; Faculty of Veterinary Medicine; Assuit University; Assuit Egypt
| | - TM El-sherry
- Department of Theriogenology; Faculty of Veterinary Medicine; Assuit University; Assuit Egypt
| | - HH Abdelhafeez
- Department of Anatomy and Histology; Faculty of Veterinary Medicine; Assuit University; Assuit Egypt
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Zhang S, Zheng D, Wu Y, Lin W, Chen Z, Meng L, Liu J, Zhou Y. Simulated Microgravity Using a Rotary Culture System Compromises the In Vitro Development of Mouse Preantral Follicles. PLoS One 2016; 11:e0151062. [PMID: 26963099 PMCID: PMC4786255 DOI: 10.1371/journal.pone.0151062] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/22/2016] [Indexed: 01/03/2023] Open
Abstract
Background Growing cells in simulated weightlessness condition might be a highly promising new technique to maintain or generate tissue constructs in a scaffold-free manner. There is limited evidence that microgravity condition may affect development of ovarian follicles. The objective of the present study was to investigate the effects of simulated microgravity on the in vitro development of mouse preantral follicles. Methods and Results Ovarian tissue from 14-day-old mice, or preantral follicles mechanically isolated from 14-day-old mouse ovaries were cultured at a simulated microgravity condition generated using a rotating wall vessel apparatus. Follicle survival was assessed quantitatively using H&E staining. Follicle diameter and oocyte diameter were measured under an inverted microscope. Ultrastructure of oocytes was evaluated using transmission electron microscopy. We observed that simulated microgravity compromised follicle survival in vitro, downregulated PCNA and GDF-9 expressions, and caused ultrastructural abnormalities in oocytes. Conclusion This study showed for the first time that three-dimensional culture condition generated by simulated microgravity is detrimental to the initial stage development of mouse preantral follicles in vitro. The experimental setup provides a model to further investigate the mechanisms involved in the in vitro developmental processes of oocytes/granulosa cells under the microgravity condition.
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Affiliation(s)
- Shen Zhang
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Dahan Zheng
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Yonggen Wu
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Wei Lin
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Zaichong Chen
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Luhe Meng
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Jun Liu
- Stem Cells and Genetic Engineering Group, Department of Materials Engineering, Monash University, Clayton, Victoria, Australia
- * E-mail: (JL); (YZ)
| | - Ying Zhou
- Reproductive Medicine Center, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
- Department of Histology and Embryology, Wenzhou Medical University, Wenzhou, Zhejiang Province, China
- * E-mail: (JL); (YZ)
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Investigation ofin vitroparameters and fertility of mouse ovary after storage at an optimal temperature and duration for transportation. Hum Reprod 2016; 31:774-81. [DOI: 10.1093/humrep/dew023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/27/2016] [Indexed: 12/25/2022] Open
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BMP-15 m-RNA expression of mouse oocytes in vitro maturation in different droplet medium volume. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2015. [DOI: 10.1016/j.apjr.2015.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Nieweglowska D, Hajdyla-Banas I, Pitynski K, Banas T, Grabowska O, Juszczyk G, Ludwin A, Jach R. Age-related trends in anti-Mullerian hormone serum level in women with unilateral and bilateral ovarian endometriomas prior to surgery. Reprod Biol Endocrinol 2015; 13:128. [PMID: 26596960 PMCID: PMC4657379 DOI: 10.1186/s12958-015-0125-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 11/17/2015] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Endometriosis is a well-known cause of infertility, and the anti-Mullerian hormone (AMH) is an accepted biomarker of ovarian reserve and response to artificial reproductive technology procedures. The present study was a prospective analysis of age-dependent AMH serum concentration in women with bilateral and unilateral ovarian endometriomas before therapy onset compared with healthy controls. METHODS This prospective cross-sectional study included 384 women aged 18-48 years. AMH serum concentration was assessed between days 3 and 6 of the menstrual cycle in 78 patients with bilateral and 157 patients with unilateral ovarian endometriomas and compared with 149 healthy controls. Ovarian endometriosis was confirmed histopathologically, and data were presented as medians with interquartile range (IQR). RESULTS Stage III endometriosis was diagnosed in 53.2 %, stage IV in 18.3 %, stage V in 23.4 % and stage VI in 5.4 % of the patients. Patients with bilateral ovarian endometriomas showed the lowest median AMH levels compared with patients suffering from unilateral ovarian endometriosis (0.55; IQR: 0.59 vs. 2.00; IQR: 2.80; p < 0.001) and the control group (0.55; IQR: 0.59 vs. 2.84; IQR: 3.2; p < 0.001). Median AMH concentration values were not significantly different between patients with unilateral ovarian endometriosis and the healthy controls (2.00; IQR: 2.80 vs. 2.84; IQR: 3.2; p = 0.182). A strongly negative correlation between AMH levels and age was confirmed in healthy individuals (R = -0.834; p < 0.001) and women with unilateral ovarian endometriomas (R = -0.774; p < 0.001). Patients with bilateral ovarian endometriosis showed a significantly negative but only moderate correlation between AMH levels and age (R = -0.633; p < 0.001), which was significantly lower than in the healthy controls (R = -0.633 vs. R = -0.834; p = 0.006) but not in the patients with unilateral ovarian endometriosis (R = -0.663 vs. R-0.774; p = 0.093). Based on a multivariate regression analysis, only bilateral localization of ovarian endometrial cysts (p = 0.003) and patient age (p < 0.001), but not left/right localization of unilateral cyst or cyst volume, were negatively associated with AMH serum concentration. CONCLUSION According to our data, unilateral ovarian endometriosis had a moderately negative and nonsignificant effect on AMH-based ovarian reserve evaluated prior to surgery, irrespective of age. In contrast, the ovarian reserve was significantly reduced in women with bilateral ovarian endometriomas.
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Affiliation(s)
- Dorota Nieweglowska
- Department of Gynecology and Oncology, Jagiellonian University, Chair of Gynecology and Obstetrics, Krakow, 21 Kopernika Str, 30-501, Krakow, Poland
| | - Iwona Hajdyla-Banas
- Center of Rheumatology, Immunology and Rehabilitation, Dietl Specialistic Hospital, Krakow, Poland
| | - Kazimierz Pitynski
- Department of Gynecology and Oncology, Jagiellonian University, Chair of Gynecology and Obstetrics, Krakow, 21 Kopernika Str, 30-501, Krakow, Poland.
| | - Tomasz Banas
- Department of Gynecology and Oncology, Jagiellonian University, Chair of Gynecology and Obstetrics, Krakow, 21 Kopernika Str, 30-501, Krakow, Poland
| | - Oliwia Grabowska
- Nuffield Division of Clinical Laboratory Science, University of Oxford, Level 4, John Radcliffe Hospital, Headington, OX3 9DU, Oxford, UK
| | - Grzegorz Juszczyk
- Department of Public Health, Medical University of Warsaw, Warsaw, Poland
| | - Artur Ludwin
- Department of Gynecology and Oncology, Jagiellonian University, Chair of Gynecology and Obstetrics, Krakow, 21 Kopernika Str, 30-501, Krakow, Poland
| | - Robert Jach
- Department of Gynecological Endocrinology, Jagiellonian University Medical College, Krakow, Poland
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Loss of vascular endothelial growth factor A (VEGFA) isoforms in granulosa cells using pDmrt-1-Cre or Amhr2-Cre reduces fertility by arresting follicular development and by reducing litter size in female mice. PLoS One 2015; 10:e0116332. [PMID: 25658474 PMCID: PMC4320103 DOI: 10.1371/journal.pone.0116332] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Accepted: 12/08/2014] [Indexed: 11/19/2022] Open
Abstract
Because VEGFA has been implicated in follicle development, the objective of this study was to determine the effects of granulosa- and germ cell-specific VEGFA loss on ovarian morphogenesis, function, and female fertility. pDmrt1-Cre mice were mated to floxed VEGFA mice to develop granulosa-/germ cell-specific knockouts (pDmrt1-Cre;Vegfa-/-). The time from mating to first parturition was increased when pDmrt1-Cre;Vegfa-/- females were mated to control males (P = 0.0008) and tended to be longer for heterozygous females (P < 0.07). Litter size was reduced for pDmrt1-Cre;Vegfa-/- females (P < 0.007). The time between the first and second parturitions was also increased for heterozygous females (P < 0.04) and tended to be increased for pDmrt1-Cre;Vegfa-/- females (P < 0.07). pDmrt1-Cre;Vegfa-/- females had smaller ovaries (P < 0.04), reduced plasma estradiol (P < 0.007), fewer developing follicles (P < 0.008) and tended to have fewer corpora lutea (P < 0.08). Expression of Igf1r was reduced (P < 0.05); expression of Foxo3a tended to be increased (P < 0.06); and both Fshr (P < 0.1) and Sirt6 tended to be reduced (P < 0.06) in pDmrt1-Cre;Vegfa-/- ovaries. To compare VEGFA knockouts, we generated Amhr2-Cre;Vegfa-/- mice that required more time from mating to first parturition (P < 0.003) with variable ovarian size. Both lines had more apoptotic granulosa cells, and vascular staining did not appear different. Taken together these data indicate that the loss of all VEGFA isoforms in granulosa/germ cells (proangiogenic and antiangiogenic) causes subfertility by arresting follicular development, resulting in reduced ovulation rate and fewer pups per litter.
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Tan SJ, Lee LJ, Tzeng CR, Wang CW, Hsu MI, Chen CH. Targeted anti-apoptosis activity for ovarian protection against chemotherapy-induced ovarian gonadotoxicity. Reprod Biomed Online 2014; 29:612-20. [DOI: 10.1016/j.rbmo.2014.07.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 07/05/2014] [Accepted: 07/08/2014] [Indexed: 11/28/2022]
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Kristensen SG, Andersen K, Clement CA, Franks S, Hardy K, Andersen CY. Expression of TGF-beta superfamily growth factors, their receptors, the associated SMADs and antagonists in five isolated size-matched populations of pre-antral follicles from normal human ovaries. ACTA ACUST UNITED AC 2013; 20:293-308. [DOI: 10.1093/molehr/gat089] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Shahed A, Young KA. Anti-Müllerian hormone (AMH), inhibin-α, growth differentiation factor 9 (GDF9), and bone morphogenic protein-15 (BMP15) mRNA and protein are influenced by photoperiod-induced ovarian regression and recrudescence in Siberian hamster ovaries. Mol Reprod Dev 2013; 80:895-907. [PMID: 23877969 PMCID: PMC3835454 DOI: 10.1002/mrd.22215] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 07/12/2013] [Indexed: 11/07/2022]
Abstract
Exposure of Siberian hamsters to short photoperiod (SD) inhibits ovarian function, including folliculogenesis, whereas function is restored with their transfer to long photoperiods (LD). To investigate the mechanism of photo-stimulated recrudescence, we assessed key folliculogenic factors-anti-Müllerian hormone (AMH), inhibin-α, growth differentiation factor-9 (GDF9), and bone morphogenic protein-15 (BMP15)-across the estrus cycle and in photo-regressed and recrudescing ovaries. Adult hamsters were exposed to either LD or SD for 14 weeks, which respectively represent functional and regressed ovaries. Select regressed hamsters were transferred back to LD for 2 (post-transfer week 2; PTw2) or 8 weeks (PTw8). Ovaries were collected and fixed in formalin for immunohistochemistry or frozen in liquid nitrogen for real-time PCR. AMH, inhibin-α, GDF9, and BMP15 mRNA and protein were detected in all stages of the estrus cycle. Fourteen weeks of SD exposure increased (P < 0.05) ovarian AMH, GDF9, and BMP15, but not inhibin-α mRNA levels as compared to LD. Transfer of regressed hamsters to stimulatory long photoperiod for 8 weeks returned AMH and GDF9 mRNA levels to LD-treated levels, and further increased mRNA levels for inhibin-α and BMP15. Immunostaining for AMH, inhibin-α, GDF9, and BMP15 proteins was most intense in preantral/antral follicles and oocytes. The overall immunostaining extent for AMH and inhibin-α generally mirrored the mRNA data, though no changes were observed for GDF9 or BMP15 immunostaining. Shifts in mRNA and protein levels across photoperiod conditions suggest possible syncretic roles for these folliculogenic factors in photo-stimulated recrudescence via potential regulation of follicle recruitment, preservation, and development.
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Affiliation(s)
- Asha Shahed
- Department of Biological Sciences, California State University Long Beach, Long Beach, California
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Parte S, Bhartiya D, Manjramkar DD, Chauhan A, Joshi A. Stimulation of ovarian stem cells by follicle stimulating hormone and basic fibroblast growth factor during cortical tissue culture. J Ovarian Res 2013; 6:20. [PMID: 23547966 PMCID: PMC3635909 DOI: 10.1186/1757-2215-6-20] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 03/22/2013] [Indexed: 12/11/2022] Open
Abstract
Background Cryopreserved ovarian cortical tissue acts as a source of primordial follicles (PF) which can either be auto-transplanted or cultured in vitro to obtain mature oocytes. This offers a good opportunity to attain biological parenthood to individuals with gonadal insufficiency including cancer survivors. However, role of various intra- and extra-ovarian factors during PF growth initiation still remain poorly understood. Ovarian biology has assumed a different dimension due to emerging data on presence of pluripotent very small embryonic-like stem cells (VSELs) and ovarian germ stem cells (OGSCs) in ovary surface epithelium (OSE) and the concept of postnatal oogenesis. The present study was undertaken to decipher effect of follicle stimulating hormone (FSH) and basic fibroblast growth factor (bFGF) on the growth initiation of PF during organ culture with a focus on ovarian stem cells. Methods Serum-free cultures of marmoset (n=3) and human (young and peri-menopausal) ovarian cortical tissue pieces were established. Cortical tissue pieces stimulated with FSH (0.5 IU/ml) or bFGF (100 ng/ml) were collected on Day 3 for histological and molecular studies. Gene transcripts specific for pluripotency (Oct-4A, Nanog), early germ cells (Oct-4, c-Kit, Vasa) and to reflect PF growth initiation (oocyte-specific Gdf-9 and Lhx8, and granulosa cells specific Amh) were studied by q-RTPCR. Results A prominent proliferation of OSE (which harbors stem cells) and transition of PF to primary follicles was observed after FSH and bFGF treatment. Ovarian stem cells were found to be released on the culture inserts and retained the potential to spontaneously differentiate into oocyte-like structures in extended cultures. q-RTPCR analysis revealed an increased expression of gene transcripts specific for VSELs, OGSCs and early germ cells suggestive of follicular transition. Conclusion The present study shows that both FSH and bFGF stimulate stem cells present in OSE and also lead to PF growth initiation. Thus besides being a source of PF, cryopreserved ovarian cortical tissue could also be a source of stem cells which retain the ability to spontaneously differentiate into oocyte-like structures in vitro. Results provide a paradigm shift in the basic understanding of FSH action and also offer a new perspective to the field of oncofertility research.
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Affiliation(s)
- Seema Parte
- Stem Cell Biology Department, National Institute for Research in Reproductive Health (NIRRH), JM Street, Parel, Mumbai, 400 012, India.
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Monniaux D, Drouilhet L, Rico C, Estienne A, Jarrier P, Touzé JL, Sapa J, Phocas F, Dupont J, Dalbiès-Tran R, Fabre S. Regulation of anti-Müllerian hormone production in domestic animals. Reprod Fertil Dev 2013; 25:1-16. [DOI: 10.1071/rd12270] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In mammals, anti-Müllerian hormone (AMH) expression is detected in the granulosa cells of all growing follicles and is highest in healthy small antral follicles, which contribute most significantly to AMH endocrine levels. AMH is a reliable endocrine marker of this population of gonadotrophin-responsive follicles in ruminants and, over the longer term, plasma AMH concentrations are characteristic of individual animals. In the cow, plasma AMH concentrations follow specific dynamic profiles throughout the prepubertal period, the oestrous cycle and the change from gestation to the post partum period, with the alterations most likely reflecting numerical changes in the population of high AMH-producing follicles. In granulosa cells, bone morphogenetic proteins (BMP) enhance AMH gene expression and AMH synthesis, with these effects antagonised by FSH. BMP could both support follicular growth and contribute significantly to the induction and/or maintenance of AMH expression in small growing follicles. AMH expression decreases sharply in large follicles when they become oestrogenic, suggesting a role for FSH and/or oestradiol in these changes, but the underlying mechanisms remain hypothetical. A better understanding of the factors and mechanisms regulating AMH production is needed to propose new strategies for managing the reserve of primordial and small growing follicles, as well as for improving embryo production.
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16
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Pangas SA. Regulation of the ovarian reserve by members of the transforming growth factor beta family. Mol Reprod Dev 2012; 79:666-79. [PMID: 22847922 DOI: 10.1002/mrd.22076] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 07/13/2012] [Indexed: 11/08/2022]
Abstract
Genetic or environmental factors that affect the endowment of oocytes, their assembly into primordial follicles, or their subsequent entry into the growing follicle pool can disrupt reproductive function and may underlie disorders such as primary ovarian insufficiency. Mouse models have been instrumental in identifying genes important in ovarian development, and a number of genes now associated with ovarian dysfunction in women were first identified as causing reproductive defects in knockout mice. The transforming growth factor beta (TGFB) family consists of developmentally important growth factors that include the TGFBs, anti-Müllerian hormone (AMH), activins, bone morphogenetic proteins (BMPs), and growth and differentiation factor 9 (GDF9). The ovarian primordial follicle pool is the source of oocytes in adults. Development of this pool can be grossly divided into three key processes: (1) establishment of oocytes during embryogenesis followed by (2) assembly and (3) activation of the primordial follicle. Disruptions in any of these processes may cause reproductive dysfunction. Most members of the TGFB family show pivotal roles in each of these areas. Understanding the phenotypes of various mouse models for this protein family will be directly relevant to understanding how disruptions in TGFB family signaling result in reproductive diseases in women and will present new areas for development of tailored diagnostics and interventions for infertility.
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Affiliation(s)
- Stephanie A Pangas
- Department of Pathology and Immunology, Baylor College of Medicine, Houston, Texas 77030, USA.
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17
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Transgenerational toxicity of Zearalenone in pigs. Reprod Toxicol 2012; 34:110-9. [DOI: 10.1016/j.reprotox.2012.03.004] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/28/2012] [Accepted: 03/16/2012] [Indexed: 01/13/2023]
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18
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Choi JH, Yoo CR, Ahn JY, Park JH, Lim JM. Growth of Ovarian Primary Follicles Retrieved from Neonates of Different Ages and Derivation of Mature Oocytes Following In vitro-Culture. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2012; 25:629-34. [PMID: 25049606 PMCID: PMC4093109 DOI: 10.5713/ajas.2010.10249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 12/31/2010] [Accepted: 08/31/2010] [Indexed: 11/27/2022]
Abstract
This study was conducted to improve the yield of mature oocytes from in vitro-culture of ovarian primary follicles by optimizing follicle retrieval from neonatal mice of different ages. Primary follicles of 75 to 99 μm in diameter were collected daily from 7- to 14-day-old neonatal mice, and subsequently cultured in α-MEM medium. Number of primary follicles isolated, growth of the follicle during in vitro-culture and maturation of intrafollicular oocytes were monitored. Overall, mean number of preantral follicles per animal was improved from 10.7 to 88.7 as the age of follicle donors was increased from 7 to 14-day-old. Number of primary follicles was increased gradually up to 11-day-old (35.7 follicle per an animal), then reduced to 29 in 14-day-old (p = 0.0013). More follicles retrieved from 10-day-old or 11-day-old females maintained their morphological normality at the end of primary culture than the follicles retrieved from 9-day-old. Of those cultured, primary follicles retrieved from 11-day-old mice yielded largest larger number of early secondary follicles than the follicles retrieved from in the other ages (39 vs. 13 to 29%). More than 3.3-times increase (0.86 to 2.86; p<0.05) in an average number of mature oocytes per animal was observed in the group of 11-day-old, compared with 9-day-old. However, no difference was found in the percentage of primary follicles developing into the pseudoantral stage (21 to 30%; p = 0.5222) and in the percentage of oocytes mucified (32 to 39%; p = 0.5792). In conclusion, a positive correlation between retrieval time and follicle growth was detected, which influences the efficiency to derive mature oocytes by follicle culture.
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Affiliation(s)
- J H Choi
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-912, Korea
| | - C R Yoo
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-912, Korea
| | - J Y Ahn
- WCU Biomodulation Program, Seoul National University, Seoul 151-742, Korea
| | - J H Park
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-912, Korea
| | - J M Lim
- Department of Agricultural Biotechnology, Seoul National University, Seoul 151-912, Korea ; WCU Biomodulation Program, Seoul National University, Seoul 151-742, Korea ; Institutes for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
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19
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Li Y, Zhang C. The relationship between Evi-1 expression and mouse ovarian follicular development. Acta Histochem 2012; 114:79-86. [PMID: 21397932 DOI: 10.1016/j.acthis.2011.02.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 02/13/2011] [Accepted: 02/16/2011] [Indexed: 11/28/2022]
Abstract
The ecotropic viral integration site-1 (Evi-1) is a transcription factor with two sets of zinc finger domains. It is an important regulator of the transforming growth factor beta superfamily. In the present study, we investigated the spatiotemporal expression patterns of Evi-1 using immunohistochemistry in ovaries from neonatal mice, gonadotropin-induced immature mice and mice in estrous cycle. Positive staining for Evi-1 was detected in the cytoplasm of oocytes. In postnatal mice, a high level of Evi-1 immunostaining was found from day 1 to 6, an intermediate level from day 10 to 16 and a low level on day 23. After gonadotropin treatment, Evi-1 was mainly expressed in small follicles and exhibited a very low level in large antral follicles. During the estrous cycle, the expression of Evi-1 was higher in diestrus and estrus than in proestrus and metestrus. Real-time PCR was performed to examine the relationship between Evi-1 mRNA and ovulation related genes (Ptgs2, Tnfaip6, Has2, Cd44, C1qbp). At 4 h after hCG treatment, Evi-1 mRNA was down-regulated whereas ovulation related genes were up-regulated. Overall, the results indicate that Evi-1 is expressed in a stage-specific manner during ovarian follicular development and may be involved in early follicle development.
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Affiliation(s)
- Yang Li
- Key Laboratory of Animal Resistance Research, College of Life Science, Shandong Normal University, Ji'nan, China
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20
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Choi JH, Kim GA, Park JH, Song GH, Park JW, Kim DY, Lim JM. Generation of viable embryos and embryonic stem cell-like cells from cultured primary follicles in mice. Biol Reprod 2011; 85:744-54. [PMID: 21697516 DOI: 10.1095/biolreprod.110.084137] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Primary follicles retrieved from B6CBAF1 prepubertal mice were cultured in a stepwise manner in an alpha-minimum essential medium-based medium to generate viable embryos and embryonic stem cell (ESC)-like cells. A significant increase in follicle growth and oocyte maturation accompanied by increased secretion of 17beta-estradiol and progesterone was achieved by exposing primary follicles to 100 or 200 mIU of follicle-stimulating hormone (FSH) during culture. More oocytes developed into blastocysts following in vitro fertilization (IVF) or parthenogenetic activation after culture with 200 mIU of FSH during the entire culture period than with 100 mIU. Eleven ESC-like cell lines, consisting of four heterozygotic and seven homozygotic phenotypes, were established from 25 trials of primary follicle culture combined with IVF or parthenogenetic activation. In conclusion, primary follicles can potentially yield developmentally competent oocytes, which produce viable embryos and ESC-like cell lines following in vitro manipulation. We suggest a method to utilize immature follicles, which are most abundant in ovaries, to improve reproductive efficiency and for use in regenerative medicine.
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Affiliation(s)
- Jun Hee Choi
- Laboratory of Stem Cell and Bioevaluation, World Class University Biomodulation Program, Seoul National University, Seoul, Republic of Korea
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21
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Oocyte growth in vitro: potential model for studies of oocyte-granulosa cell interactions. Reprod Med Biol 2011; 11:1-9. [PMID: 29699101 DOI: 10.1007/s12522-011-0096-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Accepted: 06/06/2011] [Indexed: 02/01/2023] Open
Abstract
Various factors such as gonadotrophins, growth factors, and steroid hormones play important roles in the regulation of oocyte/follicular growth in mammalian ovaries. In addition to these factors, there is a bidirectional interaction between oocytes and granulosa cells that is essential for achieving optimal oocyte developmental competence. Oocytes play a key role in this interaction by secreting paracrine factors that alter the activities of neighboring cumulus cells, such as the expression of a specific amino acid transporter, cholesterol biosynthesis, and levels of glycolysis in the cumulus cells. Among the known oocyte-derived factors, growth differentiation factor 9 (GDF9) is the dominant factor mediating the regulation by oocytes leading to cumulus expansion and granulosa cell proliferation. GDF9 frequently interacts with other oocyte-derived factors in a synergistic manner. It seems reasonable to speculate that oocytes growing in vitro require interactions similar to those in vivo. Some of the oocyte-mediated regulations have been confirmed in vitro, providing evidence of the usefulness of culture systems as a strong tool for such studies. This review discusses in vitro culture of growing oocytes in terms of oocyte-granulosa cell interactions.
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Celestino JJH, Lima-Verde IB, Bruno JB, Matos MHT, Chaves RN, Saraiva MVA, Silva CMG, Faustino LR, Rossetto R, Lopes CAP, Donato MAM, Peixoto CA, Campello CC, Silva JRV, Figueiredo JR. Steady-state level of bone morphogenetic protein-15 in goat ovaries and its influence on in vitro development and survival of preantral follicles. Mol Cell Endocrinol 2011; 338:1-9. [PMID: 21333714 DOI: 10.1016/j.mce.2011.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 12/21/2010] [Accepted: 02/10/2011] [Indexed: 11/23/2022]
Abstract
This study investigates steady-state level of bone morphogenetic protein-15 (BMP-15) mRNA in caprine follicles, and the effects of BMP-15 on in vitro development of preantral follicles. Ovarian fragments were cultured for one or seven days in Minimal Essential Medium (MEM(+)) with BMP-15 (0, 1, 10, 50, 100 or 200 ng/mL), and further analyzed by histology, transmission electron and fluorescent microscopy. BMP-15 mRNA in secondary follicles was higher than in primordial and primary follicles. After seven days, 10, 50 or 100 ng/mL of BMP-15 maintained the percentage of normal follicles similar to the control (non-cultured), and increased the oocyte and follicle diameters when compared to the control and MEM(+). BMP-15 at 100 ng/mL increased the secondary follicles and maintained their ultrastructural integrity. In conclusion, the BMP-15 mRNAs were detected in all follicular categories. BMP-15 (100 ng/mL) maintained the integrity and promoted the growth of caprine preantral follicles cultured for seven days.
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Affiliation(s)
- J J H Celestino
- Faculty of Veterinary Medicine, LAMOFOPA, PPGCV, State University of Ceara, Fortaleza, CE, Brazil.
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23
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Sun RZ, Lei L, Cheng L, Jin ZF, Zu SJ, Shan ZY, Wang ZD, Zhang JX, Liu ZH. Expression of GDF-9, BMP-15 and their receptors in mammalian ovary follicles. J Mol Histol 2010; 41:325-32. [DOI: 10.1007/s10735-010-9294-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Accepted: 09/07/2010] [Indexed: 10/19/2022]
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24
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Oron G, Fisch B, Ao A, Zhang XY, Farhi J, Ben-Haroush A, Haroush AB, Kesseler-Icekson G, Abir R. Expression of growth-differentiating factor 9 and its type 1 receptor in human ovaries. Reprod Biomed Online 2010; 21:109-17. [PMID: 20427239 DOI: 10.1016/j.rbmo.2010.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Revised: 02/21/2010] [Accepted: 03/09/2010] [Indexed: 11/15/2022]
Abstract
The expression of growth-differentiating factor 9 (GDF9) has not been studied in ovaries from girls and human fetuses nor has its receptor transforming growth factor-beta1 receptor (TGFbetaR1) been investigated in ovaries of girls/women. The aim of this study was to fill these gaps. Ovarian samples were obtained from 16 human fetuses at 21-35 gestational weeks and from 34 girls/women aged 5-39years. These specimens were prepared for immunohistochemical staining of the GDF9 and TGFbetaR1 proteins. Reverse transcription polymerase chain reaction was used to detect GDF9 mRNA transcripts and in-situ hybridization to localize TGFbetaR1 mRNA transcripts. Positive staining for the GDF9 protein was identified in oocytes and granulosa cells in all samples tested. GDF9 mRNA transcripts were present in all samples. Protein expression of TGFbetaR1 was identified in granulosa cells in all samples. Oocyte staining was identified in samples from girls/women but in only one fetal sample. TGFbetaR1 mRNA transcripts were identified in granulosa cells and oocytes in 50% of the samples from fetuses aged over 22 gestational weeks and in samples from girls/women. The detection of GDF9 and TGFbetaR1 at both at the protein and mRNA levels suggests that GDF9 may have functions in human preantral follicles.
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Affiliation(s)
- Galia Oron
- Infertility and IVF Unit, Helen Schneider Hospital for Women, Rabin Medical Center, Beilinson Hospital, Petach Tikva 49100, Israel
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25
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Margulis S, Abir R, Felz C, Nitke S, Krissi H, Fisch B. Bone morphogenetic protein 15 expression in human ovaries from fetuses, girls, and women. Fertil Steril 2008; 92:1666-73. [PMID: 18980767 DOI: 10.1016/j.fertnstert.2008.08.119] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2008] [Revised: 08/10/2008] [Accepted: 08/24/2008] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To investigate, for the first time, the protein expression of bone morphogenetic protein (BMP) 15 in human ovaries from fetuses, girls/women as well as its mRNA transcripts in ovaries from fetuses and girls. DESIGN Controlled immunohistochemical and in situ hybridization study of expression of BMP-15 protein and mRNA transcripts in human ovaries. SETTING Major tertiary care academic center. PATIENT(S) Nine patients that underwent pregnancy terminations at 21-33 gestational weeks and 18 girls and women aged 5-39 years that underwent ovarian laparoscopies. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Immunohistochemistry (protein detection) in all specimens and in situ hybridization (mRNA detection) in specimens from fetuses and girls. Both procedures were conducted on paraffin sections. RESULT(S) The expression of the BMP-15 protein and its mRNA was identified already from primordial stages. Protein expression was detected in all oocytes and stroma cells from both ovarian sources, and in granulosa cells of specimens from girls and women. The mRNA transcripts were detected in the oocyte, granulosa, and stroma cells from fetuses and girls. CONCLUSION(S) The BMP-15 protein is expressed already at primordial stages in fetuses, girls, and women, and its mRNA transcripts in fetuses and girls. Further studies should be conducted to elucidate if indeed BMP-15 is involved in the activation of human primordial follicles.
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Affiliation(s)
- Sima Margulis
- Infertility and In Vitro Fertilization Unit, Helen Schneider Hospital for Women, Rabin Medical Center, Beilinson Hospital, Petach Tikva, Israel
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26
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Varghese AC, du Plessis SS, Falcone T, Agarwal A. Cryopreservation/transplantation of ovarian tissue and in vitro maturation of follicles and oocytes: challenges for fertility preservation. Reprod Biol Endocrinol 2008; 6:47. [PMID: 18828928 PMCID: PMC2567323 DOI: 10.1186/1477-7827-6-47] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2008] [Accepted: 10/02/2008] [Indexed: 11/10/2022] Open
Abstract
Cryopreservation of ovarian tissue and in vitro follicle maturation are two emerging techniques for fertility preservation, especially in cancer patients. These treatment regimes are opening up more options and allow for more suitable choices to preserve fertility according to the patient's specific circumstances. If these technologies are to become widely accepted, they need to be safe, easy to perform and must obtain favorable results. The generation of healthy eggs with the normal genetic complement and the ability to develop into viable and healthy embryos requires tight regulation of oocyte development and maturation. Novel freezing techniques such as vitrification, along with whole ovary cryopreservation and three-dimensional follicle cultures, have shown favorable outcomes. The scope of this article is to take a comprehensively look at the challenges still faced in order for these novel technologies to be routinely employed with the aim of successful fertility preservation.
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Affiliation(s)
- Alex C Varghese
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute and Department of Obstetrics and Gynecology and Women's Health Institute, Cleveland Clinic, Ohio, USA
| | - Stefan S du Plessis
- Division of Medical Physiology, University of Stellenbosch, Tygerberg, South Africa
| | - Tommaso Falcone
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute and Department of Obstetrics and Gynecology and Women's Health Institute, Cleveland Clinic, Ohio, USA
| | - Ashok Agarwal
- Center for Reproductive Medicine, Glickman Urological and Kidney Institute and Department of Obstetrics and Gynecology and Women's Health Institute, Cleveland Clinic, Ohio, USA
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