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Bøtkjær JA, Kristensen SG, Olesen HØ, Larsson P, Mannaerts B, Andersen CY. Dose-dependent stimulation of human follicular steroidogenesis by a novel rhCG during ovarian stimulation with fixed rFSH dosing. Front Endocrinol (Lausanne) 2022; 13:1004596. [PMID: 36339420 PMCID: PMC9632659 DOI: 10.3389/fendo.2022.1004596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background Choriogonadotropin (CG) beta (FE 999302), a novel recombinant human (h)CG produced by a human cell line, has a longer half-life and higher potency than CG alfa produced by a Chinese hamster ovary cell line. hCG augments steroid production, but the extent of which CG beta treatment during ovarian stimulation (OS) increases steroidogenesis is unknown. Objective To explore how increasing doses of CG beta during OS augment follicular steroidogenesis and change gene expression in cumulus cells. Study design This study is part of a randomized, double-blind, placebo-controlled trial to investigate the efficacy and safety of CG beta plus recombinant follicle-stimulating hormone (rFSH) in women undergoing OS during a long gonadotrophin-releasing hormone agonist protocol. The study primary endpoint was intrafollicular steroid concentrations after CG beta administration. Secondary outcomes were gene expression of FSHR , LHR, CYP19a1, and androgen receptor (AR). Participants/methods 619 women with anti-Müllerian hormone levels 5-35 pmol/L were randomized to receive placebo or 1, 2, 4, 8, or 12 µg/day CG beta from Day 1 of OS plus rFSH. Follicular fluid (FF) (n=558), granulosa (n=498) and cumulus cells (n=368) were collected at oocyte retrieval. Steroid FF hormones were measured using enzyme-linked immunosorbent assays, gene expression was analyzed in cumulus cells by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and single nucleotide polymorphism (SNP) analysis was performed in granulosa cells. Results 17-OH-progesterone, androstenedione, testosterone, and estradiol concentrations significantly increased in a CG-beta dose-dependent manner during OS (p<0.0001), reaching up to 10 times higher values in the highest dose group versus placebo. There was no difference between CG beta dose groups and placebo for progesterone. Expression levels of CYP19a1 increased significantly in the highest dose group of CG beta (p=0.0325) but levels of FSHR , LHR and AR were not affected by CG beta administration. There were no differences between the FSHR (307) or LHR(312) SNP genotypes for dose-dependent effects of CG beta in relation to number of oocytes, intrafollicular steroid hormone levels, or gene expression levels. Conclusions These results reflect the importance of the combined effect of FSH and hCG/LH during OS on granulosa cell activity, follicle health and potentially oocyte quality. Trial Registration number 2017-003810-13 (EudraCT Number). Trial Registration date 21 May 2018. Date of first patient’s enrolment 13 June 2018. Presented at the 38th Annual Meeting of the European Society of Human Reproduction and Embryology, P-567, 2022.
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Affiliation(s)
- Jane Alrø Bøtkjær
- Laboratory of Reproductive Biology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Stine Gry Kristensen
- Laboratory of Reproductive Biology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Hanna Ørnes Olesen
- Laboratory of Reproductive Biology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Per Larsson
- Global Biometrics, Ferring Pharmaceuticals A/S, Copenhagen, Denmark
| | - Bernadette Mannaerts
- Reproductive Medicine & Maternal Health, Ferring Pharmaceuticals A/S, Copenhagen, Denmark
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, University Hospital of Copenhagen, Rigshospitalet, Copenhagen, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Lunding SA, Pors SE, Kristensen SG, Bøtkjær JA, Ramløse M, Jeppesen JV, Flachs EM, Pinborg A, Macklon KT, Pedersen AT, Andersen CY, Andersen AN. Ovarian cortical follicle density in infertile women with low anti-Müllerian hormone. J Assist Reprod Genet 2019; 37:109-117. [PMID: 31758514 DOI: 10.1007/s10815-019-01633-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 11/08/2019] [Indexed: 10/25/2022] Open
Abstract
PURPOSE To evaluate the association between anti-Müllerian hormone (AMH) and follicle density in infertile women with diminished ovarian reserve (DOR) versus women with normal ovarian reserve? METHODS Case-control study comparing follicle densities in ovarian cortex from 20 infertile women with DOR (AMH ≤ 5 pmol/L) and 100 controls with presumed normal ovarian reserve. RESULTS For all women > 25 years, the follicle densities correlated positively with AMH levels. For each single picomole per liter increase in AMH the follicle density increased by 6% (95% CI 3.3-8.5%) when adjusted for age. This was similar for women with DOR and controls. The follicle density was 1.8 follicles/mm3 cortical tissue in women with DOR versus 7.0 in age-paired controls (p = 0.04). The women with DOR had a median AMH of 1.8 pmol/L versus 14.4 pmol/L in the age-paired control group (p < 0.001). The ratio of AMH/follicle density was 1:1 (1.8/1.8) in women with DOR and 2:1 (14.4/7.0) in the age-paired controls. Analyses for gonadotropin receptor polymorphisms could not explain the characteristics of women with DOR. The proportion of secondary follicles was higher in women with DOR compared with controls (4.6% versus 1.4%, p = 0.0003). Pooling all patients, the follicle density decreased significantly by 7.7% for every year added (p < 0.0001). The women with DOR had lower follicle densities than the controls, but the slopes were equal in the two cohorts. CONCLUSIONS Follicle density and AMH concentrations correlate also when AMH is low. However, AMH is only a reliable marker for the true ovarian reserve when age is included in the estimation and women with DOR may have more follicles than their AMH levels imply.
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Affiliation(s)
- Stine Aagaard Lunding
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark.
| | - Susanne Elisabeth Pors
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Stine Gry Kristensen
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jane Alrø Bøtkjær
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Maja Ramløse
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Janni Vikkelsø Jeppesen
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Esben Meulengracht Flachs
- Department of Occupational and Environmental Medicine, Bispebjerg University Hospital, Copenhagen, Denmark
| | - Anja Pinborg
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
- The Fertility Clinic, Department of Obstetrics and Gynecology, Copenhagen University Hospital, Hvidovre Hospital, Hvidovre, Denmark
| | - Kirsten Tryde Macklon
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
| | - Anette Tønnes Pedersen
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
- Department of Gynecology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anders Nyboe Andersen
- The Fertility Clinic, Section 4071, Copenhagen University Hospital, Rigshospitalet, Blegdamsvej 9, 2100, Copenhagen, Denmark
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Branavan U, Muneeswaran K, Wijesundera S, Jayakody S, Chandrasekharan V, Wijeyaratne C. Identification of selected genetic polymorphisms in polycystic ovary syndrome in Sri Lankan women using low cost genotyping techniques. PLoS One 2018; 13:e0209830. [PMID: 30596735 PMCID: PMC6312267 DOI: 10.1371/journal.pone.0209830] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 12/12/2018] [Indexed: 12/14/2022] Open
Abstract
Background Polycystic ovary syndrome (PCOS), the commonest endocrine disorder affecting young women, appears to be a multigenic trait with contributing genes being unclear. Hence, analysis of polymorphisms in multiple candidate genes is required. Currently available genotyping methods are expensive, time-consuming with limited analytical sensitivity. Aim (i) Develop and validate high resolution melting (HRM) assay and allele-specific real-time quantitative PCR (AS-qPCR) for genotyping selected SNPs associated with PCOS. (ii) Identify selected SNPs and their association with a Sri Lankan cohort of well-characterized PCOS. Methods DNA was extracted from women with well-characterized PCOS from adolescence (n = 55) and ethnically matched controls (n = 110). FTO (Fat mass and obesity associated gene; rs9939609), FSHB (Follicle stimulating hormone beta subunit; rs6169), FSHR (Follicle stimulating hormone receptor; rs6165/rs6166), and INSR (Insulin receptor; rs1799817) genes were genotyped using HRM assay. GnRH1 (Gonadotropin releasing hormone; rs6185), LHB (Luteinizing hormone beta subunit; rs1800447/rs34349826) and LHCGR (Luteinizing hormone/choriogonadotropin receptor; rs2293275) genes were genotyped using AS-qPCR method. Genotyping results were validated using Sanger sequencing. Results A significant association was observed within FTO gene polymorphism (rs9939609) and PCOS. Genotype frequency of FTO gene (rs9939609)—cases versus controls were TT-36.4% vs.65.4% (p<0.05), AT-23.6% vs.20.9%, AA-40% vs.13.6% (p<0.05). Genotype frequencies of the SNPs GnRH1 (rs6185), FSHB (rs6169), FSHR (rs6165 & rs6166), LHB (rs1800447 & rs34349826), LHCGR (rs2293275) and INSR (rs1799817) were not significantly different between cases and controls (p>0.05). Only the mutant alleles were observed for LHB rs1800447 and rs34349826 SNPs in both groups. The HRM and AS-qPCR assay results had 100% concordance with sequencing results. Conclusions FTO gene rs9939609 polymorphism is significantly more prevalent among Sri Lankan PCOS subjects while the other selected SNPs of HPG axis genes and INSR gene showed no association. HRM and AS-qPCR assays provide a reliable, fast and user-friendly genotyping method facilitating wider implication in clinical practice.
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Affiliation(s)
- Umayal Branavan
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Kajan Muneeswaran
- Department of Chemistry, Faculty of Science, University of Colombo, Colombo, Sri Lanka
- Department of Psychiatry, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Sulochana Wijesundera
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Surangi Jayakody
- Department of Community Medicine, Faculty of Medical Sciences, University of Sri Jayawardanapura, Nugegoda, Sri Lanka
| | | | - Chandrika Wijeyaratne
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
- * E-mail: ,
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Borgbo T, Chrudimska J, Macek M, Jeppesen JV, Bøtkjær JA, Kristensen SG, Macklon KT, Ernst E, Hansen LL, Yding Andersen C. The polymorphic insertion of the luteinizing hormone receptor "insLQ" show a negative association to LHR gene expression and to the follicular fluid hormonal profile in human small antral follicles. Mol Cell Endocrinol 2018; 460:57-62. [PMID: 28684292 DOI: 10.1016/j.mce.2017.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 06/21/2017] [Accepted: 07/02/2017] [Indexed: 11/26/2022]
Abstract
The luteinizing hormone receptor (LHCGR) has a little studied polymorphic 6 bp insertion (rs4539842/insLQ). This study has evaluated the insLQ polymorphism in relation to potential associations with hormonal characteristics of human small antral follicles (hSAFs). In total, 310 hSAFs were collected from 86 women undergoing fertility preservation. Analysis included hormonal profile of 297 follicular fluid (FF) samples and 148 corresponding granulosa cells samples were evaluated by qPCR for selected genes. Significantly reduced and non-detectable mRNA levels of anti-Müllerian hormone receptor II (AMHR2) and LHCGR, respectively, were observed for insLQ/insLQ compared to -/insLQ and the -/- genotypes. Moreover, LHCGR and CYP19a1 together with oestradiol and inhibin-B were significantly increased in -/insLQ compared to the -/- genotype. The homozygous insLQ genotype showed strong significant associations to GC specific genes LHCGR and CYP19a1, which may translate into significant changes in FF hormone profiles and an altered LH signaling.
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Affiliation(s)
- T Borgbo
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark; Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - J Chrudimska
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czech Republic
| | - M Macek
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czech Republic
| | - J V Jeppesen
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - J A Bøtkjær
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - S G Kristensen
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - K T Macklon
- The Fertility Clinic, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - E Ernst
- The Fertility Clinic, Aarhus University Hospital, Aarhus, Denmark
| | - L L Hansen
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - C Yding Andersen
- Laboratory of Reproductive Biology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark.
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Koechling W, Plaksin D, Croston GE, Jeppesen JV, Macklon KT, Andersen CY. Comparative pharmacology of a new recombinant FSH expressed by a human cell line. Endocr Connect 2017; 6:297-305. [PMID: 28450423 PMCID: PMC5510450 DOI: 10.1530/ec-17-0067] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 04/27/2017] [Indexed: 12/02/2022]
Abstract
Recombinant FSH proteins are important therapeutic agents for the treatment of infertility, including follitropin alfa expressed in Chinese Hamster Ovary (CHO) cells and, more recently, follitropin delta expressed in the human cell line PER.C6. These recombinant FSH proteins have distinct glycosylation, and have distinct pharmacokinetic and pharmacodynamic profiles in women. Comparative experiments demonstrated that follitropin delta and follitropin alfa displayed the same in vitro potency at the human FSH receptor, but varied in their pharmacokinetics in mouse and rat. While follitropin delta clearance from serum depended in part on the hepatic asialoglycoprotein receptor (ASGPR), follitropin alfa clearance was unaffected by ASGPR inhibition in rat or genetic ablation in mice. The distinct properties of follitropin delta and follitropin alfa are likely to contribute to the differing pharmacokinetic and pharmacodynamic profiles observed in women and to influence their efficacy in therapeutic protocols for the treatment of infertility.
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Affiliation(s)
| | - Daniel Plaksin
- Bio-Technology General Israel LtdFerring Pharmaceuticals, Kiryat Malachi, Israel
| | | | - Janni V Jeppesen
- The Laboratory of Reproductive BiologyThe Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark
| | - Kirsten T Macklon
- The Laboratory of Reproductive BiologyThe Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark
| | - Claus Yding Andersen
- The Laboratory of Reproductive BiologyThe Department of Fertility at The Juliane Marie Centre, Rigshospitalet, Copenhagen University Hospital and The University of Copenhagen, Copenhagen, Denmark
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Borgbo T, Klučková H, Macek M, Chrudimska J, Kristensen SG, Hansen LL, Andersen CY. The Common Follicle-Stimulating Hormone Receptor (FSHR) Promoter Polymorphism FSHR -29G > A Affects Androgen Production in Normal Human Small Antral Follicles. Front Endocrinol (Lausanne) 2017. [PMID: 28626448 PMCID: PMC5454067 DOI: 10.3389/fendo.2017.00122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Follicle-stimulating hormone receptors (FSHRs) are almost exclusively expressed on granulosa cells, and FSH action is probably most clearly reflected in intrafollicular hormone milieu of antral follicles. Little is known about the possible effects of the common single nucleotide polymorphism (SNP) FSHR -29G > A (rs1394205) on hormonal conditions in humsan small antral follicles (hSAFs) obtained from women in the natural menstrual cycle. This study investigated the follicle fluid (FF) concentrations of anti-Müllerian hormone, estradiol, progesterone, androstenedione, and testosterone in hSAF in relation to the different genotypes of FSHR -29G > A. FF from 362 follicles was collected in 95 women undergoing fertility preservation, who did not suffer from a disease that directly affected ovarian function. The testosterone levels of the minor A/A genotype were significantly increased compared to the A/G and the G/G genotype. Furthermore, significantly reduced androstenedione levels were observed for the G/G genotype, as compared to the A/G genotype, while the other hormones did not show statistical significant differences. In conclusion, the androgen levels of hSAF were significantly elevated in the minor SNP genotype in the FSHR promoter polymorphism FSHR -29G > A.
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Affiliation(s)
- Tanni Borgbo
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, Copenhagen, Denmark
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - Hana Klučková
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czechia
| | - Milan Macek
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czechia
| | - Jana Chrudimska
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czechia
| | - Stine Gry Kristensen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, Copenhagen, Denmark
| | | | - Claus Yding Andersen
- Laboratory of Reproductive Biology, The Juliane Marie Centre for Women, Children and Reproduction, University Hospital of Copenhagen, Copenhagen, Denmark
- *Correspondence: Claus Yding Andersen,
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Bøtkjær JA, Borgbo T, Kløverpris S, Noer PR, Oxvig C, Andersen CY. Effect of pregnancy-associated plasma protein-A (PAPP-A) single-nucleotide polymorphisms on the level and activity of PAPP-A and the hormone profile in fluid from normal human small antral follicles. Fertil Steril 2016; 106:1778-1786.e8. [PMID: 27793387 DOI: 10.1016/j.fertnstert.2016.09.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 08/10/2016] [Accepted: 09/07/2016] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To reveal a possible relationship between two single nucleotide polymorphisms (SNPs) in PAPP-A-1224 (rs7020782) and 327 (rs12375498)-and the level and activity of PAPP-A in follicular fluid (FF) of human small antral follicles, and to analyze the intrafollicular hormone levels. DESIGN Laboratory investigation. SETTING University hospital. PATIENT(S) Fifty volunteer women who contributed a total of 210 samples of FF from normal small antral follicles. INTERVENTION(S) Genotyping and measurement of antigen levels of steroids, PAPP-A, stanniocalcin-2 (STC2), and antimüllerian hormone (AMH) plus activity of PAPP-A toward insulin-like growth factor binding protein 4 (IGFBP-4). MAIN OUTCOME MEASURE(S) Measurement of PAPP-A levels and hormones with enzyme-linked immunosorbent assay (ELISA) and PAPP-A activity toward radiolabeled IGFBP-4. RESULT(S) Women homozygous for the minor C allele of the 1224 SNP showed a statistically significantly lower level of PAPP-A protein and activity in FF compared with women carrying the major A allele. These women also displayed nonsignificant reduced levels of estradiol and increased levels of AMH and androgen. A statistically significant correlation between FF levels of PAPP-A activity and the molar ratio of PAPP-A/STC2 was obtained. The 327 SNP did not show statistically significant associations. CONCLUSION(S) This study presents a statistically significant effect of the 1224 SNP on the level and activity of PAPP-A in human follicles, suggesting that the FF level of bioactive insulin-like growth factor depends on the genotype. We observed STC2 to be an important regulator of PAPP-A in human FF. The 1224 SNP has previously been associated with recurrent pregnancy loss, so further evaluation of an underlying mechanism including aberrant control of insulin-like growth factor activity is warranted.
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Affiliation(s)
- Jane Alrø Bøtkjær
- Laboratory of Reproductive Biology, Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital, Copenhagen University, Copenhagen, Denmark.
| | - Tanni Borgbo
- Laboratory of Reproductive Biology, Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital, Copenhagen University, Copenhagen, Denmark
| | - Søren Kløverpris
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Pernille Rimmer Noer
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Claus Oxvig
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Claus Yding Andersen
- Laboratory of Reproductive Biology, Juliane Marie Centre for Women, Children and Reproduction, Copenhagen University Hospital, Copenhagen University, Copenhagen, Denmark
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Drábek J. Surmounting a PCR challenge using a Contradictory matrix from the Theory of Inventive Problem Solving (TRIZ). SPRINGERPLUS 2016; 5:56. [PMID: 26835236 PMCID: PMC4720617 DOI: 10.1186/s40064-015-1577-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 12/01/2015] [Indexed: 11/21/2022]
Abstract
In this paper I tested whether Contradictory Matrix with 40 Inventive Principles, the simplest instrument from the Theory of Inventive Problem Solving (TRIZ), is a useful approach to a real-life PCR scenario. The PCR challenge consisted of standardization of fluorescence melting curve measurements in Competitive Amplification of Differentially Melting Amplicons (CADMA) PCR for multiple targets. Here I describe my way of using the TRIZ Matrix to generate seven alternative solutions from which I can choose the successful solution, consisting of repeated cycles of amplification and melting in a single PCR run.
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Affiliation(s)
- Jiří Drábek
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacký University, Teaching Hospital Olomouc, Hněvotínská 5, 779 00 Olomouc, The Czech Republic
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Borgbo T, Macek M, Chrudimska J, Jeppesen JV, Hansen LL, Andersen CY. Size matters: Associations between the androgen receptor CAG repeat length and the intrafollicular hormone milieu. Mol Cell Endocrinol 2016; 419:12-7. [PMID: 26404660 DOI: 10.1016/j.mce.2015.09.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 09/16/2015] [Accepted: 09/16/2015] [Indexed: 10/23/2022]
Abstract
Granulosa cell (GC) expressed androgen receptors (AR) and intrafollicular androgens are central to fertility. The transactivating domain of the AR contains a polymorphic CAG repeat sequence, which is linked to the transcriptional activity of AR and may influence the GC function. This study aims to evaluate the effects of the AR CAG repeat length on the intrafollicular hormone profiles, and the gene expression profiles of GC from human small antral follicles. In total, 190 small antral follicles (3-11 mm in diameter) were collected from 58 women undergoing ovarian cryopreservation for fertility preservation. The biallelic mean of the CAG repeat lengths were calculated for each woman, and grouped in three groups: Long CAG repeats (23-26 mean CAG); medium CAG repeats (20.5-22.5 mean CAG) and short CAG repeats (17.5-20.0 mean CAG). The following parameters were measured: follicle diameter, intrafollicular levels of Anti-Müllerian Hormone (AMH), progesterone, oestradiol, testosterone and androstenedione, and GC gene expression levels of FSHR, LHR, AR, CYP19A1, and AMH. The long CAG repeat lengths were associated with significantly decreased testosterone levels, as compared to medium CAG repeats (P = 0.05) and short CAG repeats (P = 0.003). Furthermore, in follicles 3-6 mm in diameter, the long CAG repeats were associated with significantly increased LHR and CYP19A1 gene expression levels compared to short CAG repeat lengths (P = 0.004 and P = 0.04 respectively), and significantly increased LHR expression compared to medium CAG repeat lengths (P = 0.03). In conclusion, long CAG repeat lengths in the AR were associated to significant attenuated levels of androgens and an increased conversion of testosterone into oestradiol, in human small antral follicles.
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Affiliation(s)
- T Borgbo
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark; Laboratory of Reproductive Biology, Rigshospitalet, Copenhagen, Denmark.
| | - M Macek
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czech Republic
| | - J Chrudimska
- Department of Biology and Medical Genetics, 2nd Faculty of Medicine Charles University, University Hospital Motol, Prague, Czech Republic
| | - J V Jeppesen
- Laboratory of Reproductive Biology, Rigshospitalet, Copenhagen, Denmark
| | - L L Hansen
- Department of Biomedicine, University of Aarhus, Aarhus, Denmark
| | - C Yding Andersen
- Laboratory of Reproductive Biology, Rigshospitalet, Copenhagen, Denmark
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Borgbo T, Jeppesen J, Lindgren I, Lundberg Giwercman Y, Hansen L, Yding Andersen C. Effect of the FSH receptor single nucleotide polymorphisms (FSHR 307/680) on the follicular fluid hormone profile and the granulosa cell gene expression in human small antral follicles. ACTA ACUST UNITED AC 2014; 21:255-61. [DOI: 10.1093/molehr/gau106] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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