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Mizuno R, Yamaguchi R, Matsuura K, Ishigami A, Sakumoto R, Sawai K, Koyama K, Okubo M, Souma K, Hirayama H. Expression and localization of anti-Müllerian hormone and its receptors in bovine corpus luteum. Theriogenology 2024; 226:228-235. [PMID: 38924892 DOI: 10.1016/j.theriogenology.2024.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 05/16/2024] [Accepted: 06/20/2024] [Indexed: 06/28/2024]
Abstract
Although anti-Müllerian hormone (AMH) is involved in the regulation of granulosa cell function in female animals, its role in tissues other than ovarian follicles remains poorly understood. It has also been suggested that cows with high circulating AMH concentrations have increased fertility; however, the mechanism has not been elucidated. This study was conducted to identify the presence of the AMH-signaling system and its target cells in the bovine corpus luteum formed from an ovulated follicle. Immunoblotting revealed that the proteolytically cleaved C-terminal region in AMH (AMHC), a biologically active peptide, was present in trace amounts in the early corpus luteum and significantly increased during the mid to regressed stages. AMHC and cleaved N-terminal region (AMHN) in AMH generate a noncovalent isoform that improves the activity of AMH signaling. An immunohistochemical analysis revealed that AMHC, AMHN, and type II AMH receptor (AMHR2) were localized to luteal cells during the entire estrous cycle. AMH in the corpus luteum seemed to be newly synthesized since AMH expression was detected. These findings suggest that AMH signaling is involved in the regulation of luteal cell function through an autocrine and post-translational processing mechanism. The level of AMHR2 and mRNA expression of AMHR2 and type I AMH receptors (activin-like kinase 2, 3, and 6) were highest in the mid stage. Thus, AMH signaling in the corpus luteum may also be regulated by changes in the receptor levels. Since the transforming growth factor-beta superfamily, to which AMH belongs, is a multifunctional polypeptide growth factor, further studies are needed to evaluate whether AMH signaling has a role in facilitating or inhibiting luteal cell functions.
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Affiliation(s)
- Riuru Mizuno
- Department of Bioproduction, Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Rin Yamaguchi
- Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Kaoru Matsuura
- Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Ayaha Ishigami
- Department of Bioproduction, Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Ryosuke Sakumoto
- Division of Advanced Feeding Technology Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki, 305-0901, Japan
| | - Ken Sawai
- The United Graduate School of Agricultural Sciences, Iwate University, Iwate, 020-8550, Japan
| | - Keisuke Koyama
- Laboratory of Theriogenology, Graduate School of Veterinary Science, Osaka Metropolitan University, Osaka, 598-8531, Japan
| | - Michiko Okubo
- Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Kousaku Souma
- Department of Bioproduction, Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan; Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan
| | - Hiroki Hirayama
- Department of Bioproduction, Graduate School of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan; Department of Bioproduction, Faculty of Bioindustry, Tokyo University of Agriculture, Abashiri, Hokkaido, 099-2493, Japan.
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Abbara A, Phylactou M, Eng PC, Clarke SA, Pham TD, Ho TM, Ng KY, Mills EG, Purugganan K, Hunjan T, Salim R, Comninos AN, Vuong LN, Dhillo WS. Endocrine Responses to Triptorelin in Healthy Women, Women With Polycystic Ovary Syndrome, and Women With Hypothalamic Amenorrhea. J Clin Endocrinol Metab 2023; 108:1666-1675. [PMID: 36653328 PMCID: PMC10271229 DOI: 10.1210/clinem/dgad026] [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: 09/09/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023]
Abstract
CONTEXT Limited data exist regarding whether the endocrine response to the gonadotropin-releasing hormone receptor agonist (GnRHa) triptorelin differs in women with polycystic ovary syndrome (PCOS) compared with healthy women or those with hypothalamic amenorrhea (HA). OBJECTIVE We compared the gonadotropin response to triptorelin in healthy women, women with PCOS, or those with HA without ovarian stimulation, and in women with or without polycystic ovaries undergoing oocyte donation cycles after ovarian stimulation. METHODS The change in serum gonadotropin levels was determined in (1) a prospective single-blinded placebo-controlled study to determine the endocrine profile of triptorelin (0.2 mg) or saline-placebo in healthy women, women with PCOS, and those with HA, without ovarian stimulation; and (2) a retrospective analysis from a dose-finding randomized controlled trial of triptorelin (0.2-0.4 mg) in oocyte donation cycles after ovarian stimulation. RESULTS In Study 1, triptorelin induced an increase in serum luteinizing hormone (LH) of similar amplitude in all women (mean peak LH: healthy, 52.3; PCOS, 46.2; HA, 41.3 IU/L). The AUC of change in serum follicle-stimulating hormone (FSH) was attenuated in women with PCOS compared with healthy women and women with HA (median AUC of change in serum FSH: PCOS, 127.2; healthy, 253.8; HA, 326.7 IU.h/L; P = 0.0005). In Study 2, FSH levels 4 hours after triptorelin were reduced in women with at least one polycystic morphology ovary (n = 60) vs normal morphology ovaries (n = 91) (34.0 vs 42.3 IU/L; P = 0.0003). Serum anti-Müllerian hormone (AMH) was negatively associated with the increase in FSH after triptorelin, both with and without ovarian stimulation. CONCLUSION FSH response to triptorelin was attenuated in women with polycystic ovaries, both with and without ovarian stimulation, and was negatively related to AMH levels.
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Affiliation(s)
- Ali Abbara
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Maria Phylactou
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Pei Chia Eng
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Sophie A Clarke
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Toan D Pham
- HOPE Research Centre, My Duc Hospital, Ho Chi Minh City 700000, Vietnam
| | - Tuong M Ho
- HOPE Research Centre, My Duc Hospital, Ho Chi Minh City 700000, Vietnam
| | - Kah Yan Ng
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
| | - Edouard G Mills
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Kate Purugganan
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Tia Hunjan
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
| | - Rehan Salim
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Alexander N Comninos
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
| | - Lan N Vuong
- HOPE Research Centre, My Duc Hospital, Ho Chi Minh City 700000, Vietnam
- Department of Obstetrics and Gynecology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam
| | - Waljit S Dhillo
- Section of Endocrinology and Investigative Medicine, Imperial College London, London W12 ONN, UK
- Department of Endocrinology and Diabetes, Imperial College Healthcare NHS Trust, London W12 0NN, UK
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Saito R, Bando T, Kotaniguchi M, Tamura T, Kuno T, Watanabe K, Mizukami Y, Kitamura S, Kadokawa H. Ethanolamine plasmalogens derived from whale brain stimulate both follicle-stimulating hormone and luteinizing hormone secretion by bovine gonadotrophs. Anim Sci J 2023; 94:e13839. [PMID: 37247943 DOI: 10.1111/asj.13839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 03/10/2023] [Accepted: 04/28/2023] [Indexed: 05/31/2023]
Abstract
Ethanolamine plasmalogens (EPls) are the only known ligands of a novel receptor, G protein-coupled receptor 61, and bovine brain EPls stimulate follicle-stimulating hormone (FSH) but not luteinizing hormone (LH), secreted by bovine gonadotrophs. We hypothesized that the brain EPls of whales (Balaenoptera edeni), another Cetartiodactyla with at least twice the lifespan of bovines, could stimulate FSH secretion by gonadotrophs. To test this hypothesis, bovine gonadotrophs (from approximately 2-year-old Japanese Black heifers) were cultured for 3.5 days and treated with increasing concentrations of brain EP1s from whales (approximately 22 years old). FSH and LH secretion was stimulated by all tested concentrations of whale EPls (p < 0.05). To clarify the important differences between bovine and whale EPls, we utilized two-dimensional liquid chromatography-mass spectrometry, which revealed 35 peaks. Among them, we observed significant differences between 12 EPl molecular species. Additionally, we identified differentially expressed genes for enzymes involved in EPl synthesis or degradation in the hypothalamus of young heifers and old cows (approximately 10 years old) as compared to whales (approximately 28 years old) via deep sequencing of the transcriptome. We conclude that whale brains contain unique EPls that stimulate both FSH and LH secretion by bovine gonadotrophs.
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Affiliation(s)
- Risa Saito
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | | | - Miyako Kotaniguchi
- International Polysaccharide Engineering Inc., Laboratory of Advanced Food Process Engineering, Organization for Research Promotion, Osaka Metropolitan University, Sakai, Japan
| | | | - Tomoe Kuno
- Institute of Cetacean Research, Tokyo, Japan
| | - Kenji Watanabe
- Center for Gene Research, Yamaguchi University, Ube, Japan
| | | | - Shinichi Kitamura
- Laboratory of Advanced Food Process Engineering, Organization for Research Promotion, Osaka Metropolitan University, Sakai, Japan
| | - Hiroya Kadokawa
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Ethanolamine plasmalogens derived from scallops stimulate both follicle-stimulating hormone and luteinizing hormone secretion by bovine gonadotrophs. Sci Rep 2022; 12:16789. [PMID: 36202862 PMCID: PMC9537335 DOI: 10.1038/s41598-022-20794-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 09/19/2022] [Indexed: 11/08/2022] Open
Abstract
Brain ethanolamine plasmalogens (EPls) are the only known ligands of G-protein-coupled receptor 61, a novel receptor that stimulates follicle-stimulating hormone (FSH), but not luteinizing hormone (LH), secretion by bovine gonadotrophs. We hypothesized that the recently developed neuroprotective EPls extracted from scallop (Pecten yessoensis) (scallop EPls) could stimulate FSH secretion by gonadotrophs. To test this hypothesis, bovine gonadotrophs were cultured for 3.5 days and treated with increasing concentrations of scallop EPls. FSH secretion was stimulated by all tested concentrations of scallop EPls (P < 0.05). Surprisingly, LH secretion was stimulated by both 0.5 (P < 0.05) and 5 (P < 0.01) ng/mL of scallop EPls. To clarify the important differences between bovine brain and scallop EPls, we utilized two-dimensional liquid chromatography–mass spectrometry, which revealed 44 peaks, including 10 large peaks. Among them, eight were scallop-specific EPl molecular species, occupying approximately 58% of the total area percentage of scallop EPls. Almost all large peaks contained 4, 5, or 6 unsaturated double bonds in the carbon chain at the sn-2 position of the glycerol backbone. Our results showed that EPls from scallops, lacking pituitary glands, stimulated both FSH and LH secretion by bovine gonadotrophs.
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Gültiken N, Yarim M, Aslan S, Gürler H, Yarim GF, Tuncay M, İnal S, Schäfer-Somi S. Expression of Anti-Müllerian Hormone and Its Type 2 Receptor in the Ovary of Pregnant and Cyclic Domestic Cats. Animals (Basel) 2022; 12:ani12070877. [PMID: 35405866 PMCID: PMC8997022 DOI: 10.3390/ani12070877] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/21/2022] [Accepted: 03/25/2022] [Indexed: 01/26/2023] Open
Abstract
To evaluate the expression of AMH and its receptor AMHRII, ovaries of 33 p cats were investigated by western blot and immunohistochemistry. After ovariohysterectomy, the cats were grouped according to pregnancy stages and ovarian/placental endocrine activity: group I (n = 3, 24−29 days), II (n = 8, 32−40 days), III (n = 4, 41−46 days), IV (n = 6, 53−61 days) and according to cycle stages: V (n = 6, interestrus) and VI (n = 6, estrus). Serum progesterone- and AMH-concentration was measured. Follicle numbers did not differ between groups. The number of corpora lutea was higher in pregnant cats than in the non-pregnant cats. Serum AMH concentration was at maximum between day 30 and 50 of gestation, and was higher than in non-pregnant cats, then decreased towards term (p < 0.05). In the ovaries, AMH immunopositivity was observed in granulosa cells of secondary and antral follicles, and in interstitial cells of corpora lutea; highest percentage of immunopositive areas was detected in group III (p < 0.05). A positive correlation between the number of corpora lutea and the positive AMH signals in ovarian tissue was determined (r2 = 0.832, p < 0.05); however, only during mid-gestation (group II). Expression of AMHRII was in close co-localization with AMH and strong in the interstitial cells surrounding follicles undergoing atresia. AMHRII expression did not differ between pregnant groups but was higher compared to estrus cats (p ˂ 0.05). We conclude that AMH and AMHRII expression in the feline ovary is comparable to other species. The high serum AMH concentration and ovarian AMHRII expression between day 30 and 50 of gestation are probably related to ovarian activity and follicular atresia.
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Affiliation(s)
- Nilgün Gültiken
- Department of Obstetrics and Gynecology, University of Ondokuz Mayis, Samsun 55200, Turkey; (N.G.); (H.G.); (M.T.)
| | - Murat Yarim
- Department of Pathology, University of Ondokuz Mayis, Samsun 55200, Turkey; (M.Y.); (S.İ.)
| | - Selim Aslan
- Department of Obstetrics and Gynecology, Faculty of Veterinary Medicine, Near East University, Nicosia 99138, Cyprus;
| | - Hande Gürler
- Department of Obstetrics and Gynecology, University of Ondokuz Mayis, Samsun 55200, Turkey; (N.G.); (H.G.); (M.T.)
| | - Gul Fatma Yarim
- Department of Biochemistry, Faculty of Veterinary Medicine, University of Ondokuz Mayis, Samsun 55200, Turkey;
| | - Müge Tuncay
- Department of Obstetrics and Gynecology, University of Ondokuz Mayis, Samsun 55200, Turkey; (N.G.); (H.G.); (M.T.)
| | - Sinem İnal
- Department of Pathology, University of Ondokuz Mayis, Samsun 55200, Turkey; (M.Y.); (S.İ.)
| | - Sabine Schäfer-Somi
- Platform for Artificial Insemination and Embryo Transfer, University of Veterinary Medicine, 1210 Vienna, Austria
- Correspondence:
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Abdillah DA, Kereilwe O, Ferdousy RN, Saito R, Kadokawa H. Spike protein of SARS-CoV-2 suppresses gonadotrophin secretion from bovine anterior pituitaries. J Reprod Dev 2022; 68:152-159. [PMID: 35082199 PMCID: PMC8979804 DOI: 10.1262/jrd.2021-126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Coronavirus disease (COVID-19), the ongoing global pandemic, is caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Recent evidence shows that the virus utilizes angiotensin-converting enzyme 2 (ACE2) as a spike protein receptor for entry into target host cells. The bovine ACE2 contains key residues for binding to the spike protein receptor-binding domain. This study evaluated the hypothesis that bovine gonadotroph expresses ACE2, and spike protein suppresses luteinizing hormone (LH) and follicle-stimulating hormone (FSH) secretion from cultured bovine anterior pituitary (AP) cells. ACE2 mRNA expression and ACE2 protein expression were detected in the bovine AP cells using reverse transcription PCR and western blot analysis. Immunofluorescence microscopy analysis with the anti-ACE2 antibody revealed the co-localization of ACE2 and gonadotropin-releasing hormone (GnRH) receptor on the gonadotroph plasma membrane. Approximately 90% of GnRH receptor-positive cells expressed ACE2, and approximately 46% of ACE2-positive cells expressed the GnRH receptor. We cultured bovine AP cells for 3.5 days and treated them with increasing concentrations (0, 0.07, 0.7, or 7 pM) of recombinant spike protein having both S1 and S2 regions. The spike protein (0.07-7 pM) suppressed both basal and GnRH-induced LH secretion (P < 0.05). Spike protein (0.7-7 pM) suppressed GnRH-induced (P < 0.05), but not basal FSH secretion. In contrast, pre-treatment with ERK 1/2/5 inhibitor (U0126) partially restored the GnRH-induced LH and FSH secretion from the spike protein suppression. Collectively, the results indicate that gonadotrophs express ACE2, a receptor for coronavirus 2 spike protein, which in turn suppresses LH and FSH secretion from AP cells.
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Affiliation(s)
- Dimas Arya Abdillah
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Onalenna Kereilwe
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | | | - Risa Saito
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
| | - Hiroya Kadokawa
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
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Ferdousy RN, Kadokawa H. Anti-Müllerian hormone stimulates expression of the collagen-specific chaperone 47-kDa heat shock protein in bovine uterine epithelial cells. Anim Sci J 2022; 93:e13787. [PMID: 36507591 DOI: 10.1111/asj.13787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/25/2022] [Accepted: 11/07/2022] [Indexed: 12/14/2022]
Abstract
Uterine collagen is the most abundant component of the uterine extracellular matrix and plays a critical role in pregnancy. The 47-kDa heat shock protein (HSP47) is the sole collagen-specific molecular chaperone. We investigated the mechanisms regulating the expression of HSP47 in the uterus by assessing the effect of anti-Müllerian hormone (AMH) stimulation on HSP47 expression in cultured bovine uterine epithelial cells. AMH receptor type 2 (AMHR2), AMH, and HSP47 expression was assessed by fluorescence immunocytochemistry in uterine epithelial layers of the uteri of Japanese Black cows. The effect of AMH on HSP47 expression was assessed in cultured epithelial cells. The effect of MEK/ERK inhibitor on AMH-induced HSP47 expression was also assessed. We confirmed the expression of AMHR2, AMH, and HSP47 in the uterine epithelial layers. We confirmed the expression of AMHR2, AMH, HSP47, and type IV collagen in cultured uterine epithelial cells. AMH treatment at 10 or 100 ng/ml promoted significant HSP47 expression (p < 0.05). MEK/ERK inhibitor U0126 pretreatment suppressed such AMH stimulation on HSP47. These findings indicate that AMH induced HSP47 protein expression through the ERK pathway in bovine uterine epithelial cells.
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Affiliation(s)
| | - Hiroya Kadokawa
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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Sahin NM, Ozcan HN, Yilmaz AA, Erdeve SS, Cetinkaya S, Aycan Z. The effect of GnRH stimulation on AMH regulation in central precocious puberty and isolated premature thelarche. J Pediatr Endocrinol Metab 2021; 34:1385-1391. [PMID: 34344062 DOI: 10.1515/jpem-2021-0343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 07/09/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVES There is a complex interaction between the anti-müllerian hormone (AMH) and hypothalamic-pituitary-gonadal axis. However, the effect of gonadotropin-releasing hormone (GnRH) stimulation on AMH levels is not clearly known. In the study, we aimed to evaluate the effect of GnRH stimulation on AMH levels in central precocious puberty (CPP) and isolated premature thelarche (PT) groups. METHODS Sixty-three girls with breast development before the age of 8 were enrolled in the study. GnRH test was performed on all subjects. Blood samples for follicle-stimulating hormone (FSH), luteinizing hormone (LH), and AMH levels were taken at basal, 40th, and 90th minute of GnRH test. Subjects were grouped as CPP and PT group. RESULTS After GnRH stimulation, AMH levels increased significantly at the 40th minute and the stimulating effect of GnRH on AMH continued till the 90th minute (p: 0.0001). There was a positive correlation between basal and 90th-minute AMH levels (r: 479, p: 0.0001). The highest FSH, LH, and AMH times were significantly different after the GnRH stimulation (p: 0.001, p: 0.001, and p: 0.007). Although the CPP group had a lower basal AMH level than the PT group's basal AMH level; AMH response to GnRH stimulation was not different (p>0.05). CONCLUSIONS In our study, which examined the effect of GnRH stimulation on AMH levels in early pubertal development disorders for the first time, GnRH stimulated AMH secretion rapidly, correlated with basal AMH. Basal AMH levels were lower in patients with CPP than in those with PT; however, the effect of GnRH stimulation on AMH levels was similar in both groups.
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Affiliation(s)
- Nursel Muratoglu Sahin
- Department of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Obstetrics and Gynecology, Children's Health and Disease, Health Implementation and Research Center, Ankara, Turkey
| | - H Nursun Ozcan
- Division of Pediatric Radiology, Hacettepe University, Ankara, Turkey
| | - Aslihan Arasli Yilmaz
- Department of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Obstetrics and Gynecology, Children's Health and Disease, Health Implementation and Research Center, Ankara, Turkey
| | - Senay Savas Erdeve
- Department of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Obstetrics and Gynecology, Children's Health and Disease, Health Implementation and Research Center, Ankara, Turkey
| | - Semra Cetinkaya
- Department of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Obstetrics and Gynecology, Children's Health and Disease, Health Implementation and Research Center, Ankara, Turkey
| | - Zehra Aycan
- Department of Pediatric Endocrinology, Health Sciences University, Dr Sami Ulus Obstetrics and Gynecology, Children's Health and Disease, Health Implementation and Research Center, Ankara, Turkey
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Tumurbaatar T, Kanasaki H, Tumurgan Z, Oride A, Okada H, Kyo S. Effect of anti-Müllerian hormone on the regulation of pituitary gonadotropin subunit expression: roles of kisspeptin and its receptors in gonadotroph LβT2 cells. Endocr J 2021; 68:1091-1100. [PMID: 33994401 DOI: 10.1507/endocrj.ej21-0085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Anti-Müllerian hormone (AMH) is primarily produced by ovarian granulosa cells and contributes to follicle development. AMH is also produced in other tissues, including the brain and pituitary; however, its roles in these tissues are not well understood. In this study, we examined the effect of AMH on pituitary gonadotrophs. We detected AMH and AMH receptor type 2 expression in LβT2 cells. In these cells, the expression of FSHβ- but not α- and LHβ-subunits increased significantly as the concentration of AMH increased. LβT2 cells expressed Kiss-1 and Kiss-1R. AMH stimulation resulted in decreases in both Kiss-1 and Kiss-1R. The siRNA-mediated knockdown of Kiss-1 in LβT2 cells did not alter the basal expression levels of α-, LHβ-, and FSHβ-subunits. In LβT2 cells overexpressing Kiss-1R, exogenous kisspeptin stimulation significantly increased the expression of all three gonadotropin subunits. However, kisspeptin-induced increases in these subunits were almost completely eliminated in the presence of AMH. In contrast, GnRH-induced increases in the three gonadotropin subunits were not modulated by AMH. Our observations suggested that AMH acts on pituitary gonadotrophs and induces FSHβ-subunit expression with concomitant decreases in Kiss-1 and Kiss-1R gene expression. Kisspeptin, but not GnRH-induced gonadotropin subunit expression, was inhibited by AMH, suggesting that it functions in association with the kisspeptin/Kiss-1R system in gonadotrophs.
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Affiliation(s)
- Tuvshintugs Tumurbaatar
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
| | - Haruhiko Kanasaki
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
| | - Zolzaya Tumurgan
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
| | - Aki Oride
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
| | - Hiroe Okada
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Faculty of Medicine, Shimane University, Shimane 693-8501, Japan
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Oride A, Kanasaki H, Tumurbaatar T, Tumurgan Z, Okada H, Kyo S. Effect of anti-Müllerian hormone in hypothalamic Kiss-1- and GnRH-producing cell models. Gynecol Endocrinol 2021; 37:841-847. [PMID: 34236272 DOI: 10.1080/09513590.2021.1950134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
Purpose: Anti-Müllerian hormone (AMH) is one of the local factors involved in follicle development. In addition, AMH and its receptor are broadly expressed throughout the body. In this study, we examined how AMH modifies gene expression of Kiss-1 and GnRH.Materials and methods: mHypoA-50 and mHypoA-55 cells were originated from the hypothalamic anteroventral periventricular nucleus (AVPV) and arcuate nucleus (ARC), respectively, and these cells are known as Kiss-1 (which encodes kisspeptin) expressing cell models. These cells also express gonadotropin-releasing hormone (GnRH) genes. Our experiments were performed useing these cell models.Results: Both mHypoA-50 and mHypoA-55 hypothalamic cells expressed AMH and AMH receptor type 2 (AMHR2). Exogenous AMH failed to alter the expression levels of the Kiss-1 gene in both cell models but significantly increased GnRH gene expression by 1.73 ± 0.2-fold at 100 pM in mHypoA-50 AVPV cells and by 1.74 ± 0.17-fold at 1 nM in mHypoA-55 ARC cells. AMH also augmented GnRH protein expression in both cell models. Similar to the phenomenon observed in the hypothalamic cell lines, 100 pM AMH significantly increased GnRH, but not Kiss-1, mRNA expression in primary cultures of fetal rat brain cells. Kisspeptin-10 (KP10) increased Kiss-1 gene expression in mHypoA-55 ARC cells but this was blocked by AMH. AMH did not alter the expression of the kisspeptin receptor (Kiss1R) or that of neurokinin B or dynorphin A in mHypoA-55 ARC cells.Conclusions: It was demonstrated that AMH participates in hypothalamic-pituitary-gonadal axis control by stimulating GnRH expression. In addition, AMH might be a potent repressor of Kiss-1 gene expression induced by KP10.
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Affiliation(s)
- Aki Oride
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
| | - Haruhiko Kanasaki
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
| | - Tuvshintugs Tumurbaatar
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
| | - Zolzaya Tumurgan
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
| | - Hiroe Okada
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, School of Medicine, Shimane University, Izumo, Japan
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11
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Cannarella R, Paganoni AJJ, Cicolari S, Oleari R, Condorelli RA, La Vignera S, Cariboni A, Calogero AE, Magni P. Anti-Müllerian Hormone, Growth Hormone, and Insulin-Like Growth Factor 1 Modulate the Migratory and Secretory Patterns of GnRH Neurons. Int J Mol Sci 2021; 22:ijms22052445. [PMID: 33671044 PMCID: PMC7957759 DOI: 10.3390/ijms22052445] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 02/20/2021] [Accepted: 02/24/2021] [Indexed: 12/04/2022] Open
Abstract
Anti-Müllerian hormone (AMH) is secreted by Sertoli or granulosa cells. Recent evidence suggests that AMH may play a role in the pathogenesis of hypogonadotropic hypogonadism (HH) and that its serum levels could help to discriminate HH from delayed puberty. Moreover, the growth hormone (GH)/insulin-like growth factor 1 (IGF1) system may be involved in the function of gonadotropin-releasing hormone (GnRH) neurons, as delayed puberty is commonly found in patients with GH deficiency (GHD) or with Laron syndrome, a genetic form of GH resistance. The comprehension of the stimuli enhancing the migration and secretory activity of GnRH neurons might shed light on the causes of delay of puberty or HH. With these premises, we aimed to better clarify the role of the AMH, GH, and IGF1 on GnRH neuron migration and GnRH secretion, by taking advantage of previously established models of immature (GN11 cell line) and mature (GT1-7 cell line) GnRH neurons. Expression of Amhr, Ghr, and Igf1r genes was confirmed in both cell lines. Cells were then incubated with increasing concentrations of AMH (1.5–150 ng/mL), GH (3–1000 ng/mL), or IGF1 (1.5–150 ng/mL). All hormones were able to support GN11 cell chemomigration. AMH, GH, and IGF1 significantly stimulated GnRH secretion by GT1-7 cells after a 90-min incubation. To the best of our knowledge, this is the first study investigating the direct effects of GH and IGF1 in GnRH neuron migration and of GH in the GnRH secreting pattern. Taken together with previous basic and clinical studies, these findings may provide explanatory mechanisms for data, suggesting that AMH and the GH-IGF1 system play a role in HH or the onset of puberty.
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Affiliation(s)
- Rossella Cannarella
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (R.A.C.); (S.L.V.); (A.E.C.)
- Correspondence: (R.C.); (A.C.)
| | - Alyssa J. J. Paganoni
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (A.J.J.P.); (S.C.); (R.O.); (P.M.)
| | - Stefania Cicolari
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (A.J.J.P.); (S.C.); (R.O.); (P.M.)
| | - Roberto Oleari
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (A.J.J.P.); (S.C.); (R.O.); (P.M.)
| | - Rosita A. Condorelli
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (R.A.C.); (S.L.V.); (A.E.C.)
| | - Sandro La Vignera
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (R.A.C.); (S.L.V.); (A.E.C.)
| | - Anna Cariboni
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (A.J.J.P.); (S.C.); (R.O.); (P.M.)
- Correspondence: (R.C.); (A.C.)
| | - Aldo E. Calogero
- Department of Clinical and Experimental Medicine, University of Catania, 95123 Catania, Italy; (R.A.C.); (S.L.V.); (A.E.C.)
| | - Paolo Magni
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milan, Italy; (A.J.J.P.); (S.C.); (R.O.); (P.M.)
- IRCCS MultiMedica, Sesto S. Giovanni, 20099 Milan, Italy
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12
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Ferdousy RN, Kereilwe O, Kadokawa H. Anti-Müllerian hormone receptor type 2 (AMHR2) expression in bovine oviducts and endometria: comparison of AMHR2 mRNA and protein abundance between old Holstein and young and old Wagyu females. Reprod Fertil Dev 2021; 32:738-747. [PMID: 32336320 DOI: 10.1071/rd19121] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 12/02/2019] [Indexed: 12/14/2022] Open
Abstract
Anti-Müllerian hormone (AMH) is a glycoprotein produced by granulosa cells of preantral and small antral follicles that has multiple important roles in the ovaries. Recent studies have revealed extragonadal AMH regulation of gonadotrophin secretion from bovine gonadotrophs. In this study we investigated whether the primary receptor for AMH, AMH receptor type 2 (AMHR2), is expressed in bovine oviducts and endometria. Reverse transcription-polymerase chain reaction detected expression of AMHR2 mRNA in oviductal and endometrial specimens. Western blotting and immunohistochemistry were performed to analyse AMHR2 protein expression using anti-bovine AMHR2 antibody. Immunohistochemistry revealed robust AMHR2 expression in the tunica mucosa of the ampulla and isthmus, as well as in the glandular and luminal epithelium of the endometrium. AMHR2 mRNA (measured by real-time polymerase chain reaction) and AMHR2 protein expression in these layers did not significantly differ among oestrous phases in adult Wagyu cows (P>0.1). In addition, AMHR2 mRNA and protein expression in these layers did not differ among old Holsteins (mean (±s.e.m.) age 91.9±6.4 months) and young (26.6±0.8 months) and old (98.8±10.2 months) Wagyu cows. Therefore, AMHR2 is expressed in bovine oviducts and endometria.
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Affiliation(s)
- Raihana Nasrin Ferdousy
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Yamaguchi-ken 1677-1, Japan
| | - Onalenna Kereilwe
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Yamaguchi-ken 1677-1, Japan
| | - Hiroya Kadokawa
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Yamaguchi-ken 1677-1, Japan; and Corresponding author. Email address:
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13
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McGrice H, Kelly JM, Kleemann DO, Kind KL, Hampton AJ, Hannemann P, Walker SK, van Wettere WHEJ. Plasma anti-Müllerian hormone concentration as a predictive endocrine marker for selection of donor lambs to improve success in juvenile in vitro embryo transfer programs. Reprod Fertil Dev 2021; 32:383-391. [PMID: 31718768 DOI: 10.1071/rd18498] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 07/17/2019] [Indexed: 11/23/2022] Open
Abstract
The use of juvenile invitro embryo transfer (JIVET) is limited by variation between prepubertal lambs in ovarian response to exogenous gonadotrophins. In cattle, anti-Müllerian hormone (AMH) is a predictive endocrine marker of antral follicle count. In this study we measured plasma AMH concentrations in lambs at 3 and 5 weeks of age and determined associations between AMH concentrations and ovarian response to gonadotrophins and invitro blastocyst production at 6-8 weeks of age in a JIVET program. At 5 weeks, AMH (n=38) was positively correlated with surface antral follicle count (r=0.87, P<0.001), blastocysts produced (r=0.92, P<0.001) and blastocysts produced as a proportion of oocytes collected (r=0.44, P<0.01) or cleaved (r=0.43, P<0.01). Similar associations were observed between AMH at 3 weeks (n=30) and follicle number (r=0.70, P<0.05) and blastocysts produced (r=0.87, P<0.05). Lambs with high (>2.2ngmL-1) compared with medium (0.4-2.2ngmL-1) and low (<0.4ngmL-1) AMH at 5 weeks had more antral follicles (mean (±s.e.m.) 118.7±13.9 vs 68.2±8.1 and 30.4±12.3 respectively; P<0.05) and more blastocysts produced (mean (±s.e.m.) 54.9±6.9 vs 18.9±4.0 and 7.5±6.1 respectively; P<0.05). These results suggest that AMH concentration at 5 weeks of age can be used to select donor lambs which enhance the success of JIVET programs.
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Affiliation(s)
- Hayley McGrice
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy Campus, Roseworthy, SA 5371, Australia; and Corresponding author.
| | - Jennifer M Kelly
- South Australian Research and Development Institute, Turretfield Research Centre, Rosedale, SA 5350, Australia
| | - David O Kleemann
- South Australian Research and Development Institute, Turretfield Research Centre, Rosedale, SA 5350, Australia
| | - Karen L Kind
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy Campus, Roseworthy, SA 5371, Australia
| | - Alissa J Hampton
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy Campus, Roseworthy, SA 5371, Australia
| | - Patrick Hannemann
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy Campus, Roseworthy, SA 5371, Australia
| | - Simon K Walker
- South Australian Research and Development Institute, Turretfield Research Centre, Rosedale, SA 5350, Australia
| | - William H E J van Wettere
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy Campus, Roseworthy, SA 5371, Australia
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14
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Wu HM, Chang HM, Leung PCK. Gonadotropin-releasing hormone analogs: Mechanisms of action and clinical applications in female reproduction. Front Neuroendocrinol 2021; 60:100876. [PMID: 33045257 DOI: 10.1016/j.yfrne.2020.100876] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/23/2020] [Accepted: 10/04/2020] [Indexed: 12/15/2022]
Abstract
Extra-hypothalamic GnRH and extra-pituitary GnRH receptors exist in multiple human reproductive tissues, including the ovary, endometrium and myometrium. Recently, new analogs (agonists and antagonists) and modes of GnRH have been developed for clinical application during controlled ovarian hyperstimulation for assisted reproductive technology (ART). Additionally, the analogs and upstream regulators of GnRH suppress gonadotropin secretion and regulate the functions of the reproductive axis. GnRH signaling is primarily involved in the direct control of female reproduction. The cellular mechanisms and action of the GnRH/GnRH receptor system have been clinically applied for the treatment of reproductive disorders and have widely been introduced in ART. New GnRH analogs, such as long-acting GnRH analogs and oral nonpeptide GnRH antagonists, are being continuously developed for clinical application. The identification of the upstream regulators of GnRH, such as kisspeptin and neurokinin B, provides promising potential to develop these upstream regulator-related analogs to control the hypothalamus-pituitary-ovarian axis.
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Affiliation(s)
- Hsien-Ming Wu
- Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan 333, Taiwan, ROC
| | - Hsun-Ming Chang
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, British Columbia V6H 3V5, Canada
| | - Peter C K Leung
- Department of Obstetrics and Gynaecology, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, British Columbia V6H 3V5, Canada.
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15
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Wang Z, Wang L, Zhang Y, Yao Y, Zhao W, Xu Q, Chen G. Characterization of ovarian morphology and reproductive hormones in Zhedong white geese (Anser cygnoides domesticus) during the reproductive cycle. J Anim Physiol Anim Nutr (Berl) 2020; 105:938-945. [PMID: 33381883 DOI: 10.1111/jpn.13494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 11/16/2019] [Accepted: 09/29/2020] [Indexed: 11/28/2022]
Abstract
Zhedong white goose (Anser cygnoides domesticus) is a native Chinese breed with strong broodiness and low egg production, which is related to the physiology of reproduction. However, thus far, the physiology of goose reproduction has not been well elucidated. In the present study, the ovarian morphology and reproductive hormones of Zhedong white geese were investigated during the reproductive cycle (the laying and brooding periods). The results showed that the surface of the ovary was atrophied and follicular atresia appeared to some extent in the brooding period compared with the laying period. The concentrations of follicle-stimulating hormone, progesterone and luteinizing hormone were significantly higher than those in the brooding period (p < 0.05). In contrast, the concentrations of prolactin (PRL) and anti-Müllerian hormone (AMH) in the laying period were significantly lower than those in the brooding period (p < 0.05). In addition, the mRNA expression levels of PRL, AMH, dopamine-β-hydroxylase (DβH) and cytochrome P450 side-chain cleavage enzyme (P450scc) were detected in the hypothalamus, pituitary and ovaries by using real-time polymerase chain reaction. The results showed that AMH mRNA was expressed specifically in ovary tissue. The expression levels of DβH and PRL in the brooding period was significantly higher than those in the laying period in the three tissues, especially in the early and middle stages of the brooding period. Moreover, AMH mRNA expression in the ovaries presented the same trend. In addition, P450scc mRNA was highly expressed in both the ovary and pituitary in the laying period. These results revealed the remarkable features of ovarian morphology and characterized the hormonal pattern and expression profile during the reproductive cycle, all of which contribute to understanding the differences in reproductive physiology between the laying and brooding periods in Zhedong white geese.
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Affiliation(s)
- Zhixiu Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Laidi Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yang Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Ying Yao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Wenming Zhao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Qi Xu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Guohong Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
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16
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Yan B. Role of Anti-Müllerian Hormone (AMH) in Regulating Hypothalamus-Pituitary Function. 2020 7TH INTERNATIONAL CONFERENCE ON BIOMEDICAL AND BIOINFORMATICS ENGINEERING 2020. [DOI: 10.1145/3444884.3444899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Affiliation(s)
- Bin Yan
- China Medical University, China
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17
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Nasrin Ferdousy R, Kereilwe O, Kadokawa H. Anti-Müllerian hormone is expressed and secreted by bovine oviductal and endometrial epithelial cells. Anim Sci J 2020; 91:e13456. [PMID: 32926548 DOI: 10.1111/asj.13456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 11/29/2022]
Abstract
In this study, we investigated whether bovine oviducts and endometria produce anti-Müllerian hormone (AMH) (for paracrine and autocrine signaling). Reverse transcription-polymerase chain reaction and western blotting detected AMH expression in oviductal and endometrial specimens. Immunohistochemistry revealed robust AMH expression in the ampulla and isthmus epithelia, and the glandular and luminal endometrial epithelia (caruncular endometria). AMH mRNA (measured by real-time PCR) and protein expression in these layers did not significantly differ among estrous phases in adult Japanese Black (JB) heifers (p > .1). Furthermore, the expression in these layers also did not differ among Holstein cows (93.8 ± 5.8 months old), JB heifers (25.5 ± 0.4 months old), and JB cows (97.9 ± 7.9 months old). We also compared AMH concentrations in the oviduct and uterine horn fluids among the three groups (measured by immunoassays). Interestingly, the AMH concentration in the oviduct fluid, but not in the uterine horn fluid, of Holstein cows was lower than those in JB heifers and cows (p < .05). Therefore, bovine oviducts and endometria express AMH and likely secrete it into the oviduct and uterine fluids.
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Affiliation(s)
| | - Onalenna Kereilwe
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroya Kadokawa
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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18
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Grigoletto L, Santana MHA, Bressan FF, Eler JP, Nogueira MFG, Kadarmideen HN, Baruselli PS, Ferraz JBS, Brito LF. Genetic Parameters and Genome-Wide Association Studies for Anti-Müllerian Hormone Levels and Antral Follicle Populations Measured After Estrus Synchronization in Nellore Cattle. Animals (Basel) 2020; 10:E1185. [PMID: 32668804 PMCID: PMC7401547 DOI: 10.3390/ani10071185] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/21/2022] Open
Abstract
Reproductive efficiency plays a major role in the long-term sustainability of livestock industries and can be improved through genetic and genomic selection. This study aimed to estimate genetic parameters (heritability and genetic correlation) and identify genomic regions and candidate genes associated with anti-Müllerian hormone levels (AMH) and antral follicle populations measured after estrous synchronization (AFP) in Nellore cattle. The datasets included phenotypic records for 1099 and 289 Nellore females for AFP and AMH, respectively, high-density single nucleotide polymorphism (SNP) genotypes for 944 animals, and 4129 individuals in the pedigree. The heritability estimates for AMH and AFP were 0.28 ± 0.07 and 0.30 ± 0.09, and the traits were highly and positively genetically correlated (rG = 0.81 ± 0.02). These findings indicated that these traits can be improved through selective breeding, and substantial indirect genetic gains are expected by selecting for only one of the two traits. A total of 31 genomic regions were shown to be associated with AMH or AFP, and two genomic regions located on BTA1 (64.9-65.0 Mb and 109.1-109.2 Mb) overlapped between the traits. Various candidate genes were identified to be potentially linked to important biological processes such as ovulation, tissue remodeling, and the immune system. Our findings support the use of AMH and AFP as indicator traits to genetically improve fertility rates in Nellore cattle and identify better oocyte donors.
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Affiliation(s)
- Laís Grigoletto
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
- Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900 São Paulo, Brazil; (M.H.A.S.); (F.F.B.); (J.P.E.); (J.B.S.F.)
| | - Miguel Henrique Almeida Santana
- Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900 São Paulo, Brazil; (M.H.A.S.); (F.F.B.); (J.P.E.); (J.B.S.F.)
| | - Fabiana Fernandes Bressan
- Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900 São Paulo, Brazil; (M.H.A.S.); (F.F.B.); (J.P.E.); (J.B.S.F.)
| | - Joanir Pereira Eler
- Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900 São Paulo, Brazil; (M.H.A.S.); (F.F.B.); (J.P.E.); (J.B.S.F.)
| | - Marcelo Fábio Gouveia Nogueira
- Department of Biological Sciences, School of Sciences and Languages, São Paulo State University, Assis, 19806-900 São Paulo, Brazil;
| | - Haja N. Kadarmideen
- Department of Applied Mathematics and Computer Science, Technical University of Denmark, 102500 Lyngby, Denmark;
| | - Pietro Sampaio Baruselli
- College of Veterinary Medicine and Animal Science, University of Sao Paulo, 05508-270 São Paulo, Brazil;
| | - José Bento Sterman Ferraz
- Department of Veterinary Medicine, College of Animal Science and Food Engineering, University of São Paulo, Pirassununga, 13635-900 São Paulo, Brazil; (M.H.A.S.); (F.F.B.); (J.P.E.); (J.B.S.F.)
| | - Luiz F. Brito
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
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Lv PP, Jin M, Rao JP, Chen J, Wang LQ, Huang CC, Yang SQ, Yao QP, Feng L, Shen JM, Feng C. Role of anti-Müllerian hormone and testosterone in follicular growth: a cross-sectional study. BMC Endocr Disord 2020; 20:101. [PMID: 32641160 PMCID: PMC7341602 DOI: 10.1186/s12902-020-00569-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 06/08/2020] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Anti-Müllerian hormone (AMH) is now considered the best serum biomarker of ovarian reserve, while basal sex hormones are classic markers used for assessing ovarian reserve. The interaction between AMH and sex hormones are complicated and not sufficiently addressed. In this study, we took diminished ovarian reserve (DOR) and polycystic ovarian syndrome (PCOS) as two extremes of ovarian reserve (deficient and excessive respectively) to investigate the role of AMH and sex hormones in follicular growth. METHODS A retrospective cross-sectional survey was performed. The patients assessed AMH and basal sex hormones in the Second Hospital of Zhejiang University from April 2016 to March 2019 were involved in this study. Serum AMH and sex hormone concentrations were tested with electrochemiluminescence method. Stepwise linear regression and binary logistic regression was used to determine the predictors of AMH level and to explore the involved factors determining DOR and PCOS. RESULTS In the present study, we found that age and follicle-stimulating hormone (FSH) were main negative correlation factors, and luteinizing hormone (LH) and testosterone (T) were main positive factors of AMH. In DOR group, age, FSH and estradiol (E2) increased and T decreased, while in PCOS group, LH and T increased. Binary logistic regression found that age, weight, FSH, E2, and T were the significant factors which independently predicted the likelihood of DOR, and that age, body mass index (BMI), AMH, LH, and T predicted the likelihood of PCOS. CONCLUSIONS Our study demonstrated that age, FSH, and T were factors that most closely correlated with AMH level, and T was involved in both DOR and PCOS. Since DOR and PCOS are manifested with insufficient AMH and excessive AMH respectively, it is suggested that total testosterone correlated with AMH closely and plays an important role in follicular growth. More attention should be given to testosterone level during controlled ovarian hyperstimulation (COH) process.
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Affiliation(s)
- Ping-Ping Lv
- The Women's Hospital of Zhejiang University School of Medicine, Hangzhou, 310006, Zhejiang, China
| | - Min Jin
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Jin-Peng Rao
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Jian Chen
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Li-Quan Wang
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Chang-Chang Huang
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Song-Qing Yang
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Qiu-Ping Yao
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China
| | - Lei Feng
- The First Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310006, Zhejiang, China
| | - Jin-Ming Shen
- The First Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou, 310006, Zhejiang, China
| | - Chun Feng
- The Second Affiliated Hospital of Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, Zhejiang, China.
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Kereilwe O, Kadokawa H. Anti-Müllerian hormone and its receptor are detected in most gonadotropin-releasing-hormone cell bodies and fibers in heifer brains. Domest Anim Endocrinol 2020; 72:106432. [PMID: 32169754 DOI: 10.1016/j.domaniend.2019.106432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 11/18/2019] [Accepted: 12/27/2019] [Indexed: 12/31/2022]
Abstract
Circulating concentrations of Anti-Müllerian hormone (AMH) can indicate fertility in various animals, but the physiological mechanisms underlying the effect of AMH on fertility remain unknown. We recently discovered that AMH has extragonadal functions via its main receptor, AMH receptor type 2 (AMHR2). Specifically, AMH stimulates the secretion of luteinizing hormone and follicle-stimulating hormone from bovine gonadotrophs. Moreover, gonadotrophs themselves express AMH to exert paracrine/autocrine functions, and AMH can activate gonadotropin-releasing-hormone (GnRH) neurons in mice. This study aimed to evaluate whether AMH and AMHR2 are detected in areas of the brain relevant to neuroendocrine control of reproduction: the preoptic area (POA), arcuate nucleus (ARC), and median eminence (ME), and in particular within GnRH neurons. Reverse transcription-polymerase chain reaction detected both AMH and AMHR2 mRNA in tissues containing POA, as well as in those containing both ARC and ME, collected from postpubertal heifers. Western blotting detected AMH and AMHR2 protein in the collected tissues. Triple fluorescence immunohistochemistry revealed that most cell bodies or fibers of GnRH neurons were AMHR2-positive and AMH-positive, although some were negative. Immunohistochemistry revealed that 75% to 85% of cell bodies and fibers of GnRH neurons were positive for both AMH and AMHR2 in the POA, ARC, and both the internal and external zones of the ME. The cell bodies of GnRH neurons were situated around other AMH-positive cell bodies or fibers of GnRH and non-GNRH neurons. Our findings thus indicate that AMH and AMHR2 are detected in most cell bodies or fibers of GnRH neurons in the POA, ARC, and ME of heifer brains. These data support the need for further study as to how AMH and AMHR2 act within the hypothalamus to influence GnRH and gonadotropin secretion.
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Affiliation(s)
- O Kereilwe
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Yamaguchi-ken 1677-1, Japan
| | - H Kadokawa
- Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi-shi, Yamaguchi-ken 1677-1, Japan.
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Kereilwe O, Kadokawa H. Decreased Anti-Müllerian hormone and Anti-Müllerian hormone receptor type 2 in hypothalami of old Japanese Black cows. J Vet Med Sci 2020; 82:1113-1117. [PMID: 32554955 PMCID: PMC7468072 DOI: 10.1292/jvms.20-0159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Cow fertility decreases with age, but the hypothalamic pathomechanisms are not
understood. Anti-Müllerian hormone (AMH) stimulates gonadotropin-releasing hormone (GnRH)
neurons via AMH receptor type 2 (AMHR2), and most GnRH neurons in the preoptic area (POA),
arcuate nucleus (ARC), and median eminence (ME) express AMH and AMHR2. Therefore, we
hypothesized that both protein amounts would differ in the anterior hypothalamus
(containing the POA) and posterior hypothalamus (containing the ARC and ME) between young
post-pubertal heifers and old cows. Western blot analysis showed lower
(P<0.05) expressions of AMH and AMHR2 in the posterior hypothalamus,
but not in the anterior hypothalamus, of old Japanese Black cows compared to young
heifers. Therefore, AMH and AMHR2 were decreased in the posterior hypothalami of old
cows.
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Affiliation(s)
- Onalenna Kereilwe
- The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida 1677-1, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Hiroya Kadokawa
- The United Graduate School of Veterinary Science, Yamaguchi University, Yoshida 1677-1, Yamaguchi-shi, Yamaguchi 753-8515, Japan
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Parmova O, Vlckova E, Hulova M, Mensova L, Crha I, Stradalova P, Kralickova E, Jurikova L, Podborska M, Mazanec R, Dusek L, Jarkovsky J, Bednarik J, Vohanka S, Srotova I. Anti-Müllerian hormone as an ovarian reserve marker in women with the most frequent muscular dystrophies. Medicine (Baltimore) 2020; 99:e20523. [PMID: 32502004 PMCID: PMC7306369 DOI: 10.1097/md.0000000000020523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Some muscular dystrophies may have a negative impact on fertility. A decreased ovarian reserve is 1 of the factors assumed to be involved in fertility impairment. AMH (anti-Müllerian hormone) is currently considered the best measure of ovarian reserve.A total of 21 females with myotonic dystrophy type 1 (MD1), 25 females with myotonic dystrophy type 2 (MD2), 12 females with facioscapulohumeral muscular dystrophy (FSHD), 12 female carriers of Duchenne muscular dystrophy mutations (cDMD) and 86 age-matched healthy controls of reproductive age (range 18 - 44 years) were included in this case control study. An enzymatically amplified 2-site immunoassay was used to measure serum AMH level.The MD1 group shows a significant decrease of AMH values (median 0.7 ng/mL; range 0 - 4.9 ng/mL) compared with age-matched healthy controls (P < .01). AMH levels were similar between patients and controls in terms of females with MD2 (P = .98), FSHD (P = .55) and cDMD (P = .60).This study suggests decreased ovarian reserve in women with MD1, but not in MD2, FSHD and cDMD.
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Affiliation(s)
- Olesja Parmova
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
| | - Eva Vlckova
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- CEITEC – Central European Institute of Technology, Masaryk University, Brno
| | - Monika Hulova
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
| | - Livie Mensova
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- Department of Neurology, Second Faculty of Medicine, Charles University, Prague and University Hospital Motol, Prague
| | - Igor Crha
- Faculty of Medicine, Masaryk University, Brno
- Department of Obstetrics and Gynaecology, University Hospital Brno
| | - Petra Stradalova
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
| | | | - Lenka Jurikova
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- Department of Paediatric Neurology, Masaryk University and University Hospital Brno
| | | | - Radim Mazanec
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- Department of Paediatric Neurology, Masaryk University and University Hospital Brno
| | - Ladislav Dusek
- Institute of Biostatistics and Analyses, Masaryk University, Brno, Czech Republic
| | - Jiri Jarkovsky
- Institute of Biostatistics and Analyses, Masaryk University, Brno, Czech Republic
| | - Josef Bednarik
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- CEITEC – Central European Institute of Technology, Masaryk University, Brno
| | - Stanislav Vohanka
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- CEITEC – Central European Institute of Technology, Masaryk University, Brno
| | - Iva Srotova
- Department of Neurology, University Hospital Brno
- Faculty of Medicine, Masaryk University, Brno
- European Reference Network on Rare Neuromuscular Diseases (ERN EURO-NMD), Czechia
- CEITEC – Central European Institute of Technology, Masaryk University, Brno
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Kadokawa H. Discovery of new receptors regulating luteinizing hormone and follicle-stimulating hormone secretion by bovine gonadotrophs to explore a new paradigm for mechanisms regulating reproduction. J Reprod Dev 2020; 66:291-297. [PMID: 32249236 PMCID: PMC7470908 DOI: 10.1262/jrd.2020-012] [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] [Indexed: 12/18/2022] Open
Abstract
Previous studies in the 1960s and 1970s have reported that both gonadotropin-releasing hormone (GnRH) and estradiol-activated nuclear estrogen receptors regulate gonadotropin
secretion in women. However, I had previously reported that gonadotroph function is regulated by complex crosstalk between several membrane receptors. RNA-seq had previously
revealed 259 different receptor genes expressed in the anterior pituitary of heifers. However, the biological roles of most of these receptors remain unknown. I identified four new
receptors of interest: G protein-coupled receptor 30 (GPR30), anti-Mullerian hormone (AMH) receptor type 2 (AMHR2), and G protein-coupled receptors 61 and 153 (GPR61 and GPR153).
GPR30 rapidly (within a few minutes) mediates picomolar, but not nanomolar, levels of estradiol to suppress GnRH-induced luteinizing hormone (LH) secretion from bovine
gonadotrophs, without decreasing mRNA expressions of the LHα, LHβ, or follicle-stimulating hormone (FSH) β subunits. GPR30 is activated by other endogenous estrogens, estrone and
estriol. Moreover, GPR30 activation by zearalenone, a nonsteroidal mycoestrogen, suppresses LH secretion. AMHR2, activated by AMH, stimulates LH and FSH secretion, thus regulating
gonadotrophs, where other TGF-β family members, including inhibin and activin, potentially affect FSH secretion. I also show that GPR61, activated by its ligand (recently
discovered) significantly alters LH and FSH secretion. GPR61, GPR153, and AMHR2 co-localize with the GnRH receptor in unevenly dispersed areas of the bovine gonadotroph cell
surface, probably lipid rafts. The findings summarized in this review reveal a new paradigm regarding the mechanisms regulating reproduction via novel receptors expressed on bovine
gonadotrophs.
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Affiliation(s)
- Hiroya Kadokawa
- Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi 753-8515, Japan
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Fletcher PA, Smiljanic K, Maso Prévide R, Iben JR, Li T, Rokic MB, Sherman A, Coon SL, Stojilkovic SS. Cell Type- and Sex-Dependent Transcriptome Profiles of Rat Anterior Pituitary Cells. Front Endocrinol (Lausanne) 2019; 10:623. [PMID: 31620083 PMCID: PMC6760010 DOI: 10.3389/fendo.2019.00623] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 08/28/2019] [Indexed: 01/14/2023] Open
Abstract
Understanding the physiology and pathology of an organ composed of a variety of cell populations depends critically on genome-wide information on each cell type. Here, we report single-cell transcriptome profiling of over 6,800 freshly dispersed anterior pituitary cells from postpubertal male and female rats. Six pituitary-specific cell types were identified based on known marker genes and characterized: folliculostellate cells and hormone-producing corticotrophs, gonadotrophs, thyrotrophs, somatotrophs, and lactotrophs. Also identified were endothelial and blood cells from the pituitary capillary network. The expression of numerous developmental and neuroendocrine marker genes in both folliculostellate and hormone-producing cells supports that they have a common origin. For several genes, the validity of transcriptome analysis was confirmed by qRT-PCR and single cell immunocytochemistry. Folliculostellate cells exhibit impressive transcriptome diversity, indicating their major roles in production of endogenous ligands and detoxification enzymes, and organization of extracellular matrix. Transcriptome profiles of hormone-producing cells also indicate contributions toward those functions, while also clearly demonstrating their endocrine function. This survey highlights many novel genetic markers contributing to pituitary cell type identity, sexual dimorphism, and function, and points to relationships between hormone-producing and folliculostellate cells.
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Affiliation(s)
- Patrick A. Fletcher
- Laboratory of Biological Modeling, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Kosara Smiljanic
- Section on Cellular Signaling, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Rafael Maso Prévide
- Section on Cellular Signaling, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - James R. Iben
- Molecular Genomics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Tianwei Li
- Molecular Genomics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Milos B. Rokic
- Section on Cellular Signaling, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Arthur Sherman
- Laboratory of Biological Modeling, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Steven L. Coon
- Molecular Genomics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
| | - Stanko S. Stojilkovic
- Section on Cellular Signaling, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health (NIH), Bethesda, MD, United States
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van Helden J, Evliyaoglu O, Weiskirchen R. Has GnRH a direct role in AMH regulation? Clin Endocrinol (Oxf) 2019; 90:827-833. [PMID: 30868616 DOI: 10.1111/cen.13967] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/06/2019] [Accepted: 03/07/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Anti-Mullerian hormone (AMH) together with luteinizing hormone (LH) and follicle-stimulating hormone (FSH) plays crucial roles in gonadal functions. However, the possible effects of GnRH on AMH via the hypothalamic-pituitary-gonadal (HPG) axis remain unexplored. We aimed to explore the changes in AMH levels after bolus GnRH stimulation and understand the relationship of AMH with FSH and LH in healthy subjects. METHODS Thirty-one prepubertal children (15 males/16 females) and 78 adults (36 males/42 females) were included. We collected basal (0 minute) samples for determining levels of hormones. After GnRH treatment at a dose of 2.5 μg/kg body weight (maximum of 100 μg/kg body weight) intravenously, blood was collected at 30 minutes intervals for 120 minutes. Serum LH, FSH and AMH were measured by electrochemiluminometric assays. RESULTS After injection of GnRH, AMH levels were significantly decreased in 30 minutes (P < 0.001) in all groups with parallel increase of FSH and LH. In the second 30 minutes, all hormones levels reversed. There was also a moderate correlation between AMH and FSH (r = -0.430, P < 0.001). CONCLUSIONS GnRH lowers serum AMH levels, which have a negative correlation with the increase in gonadotrophins. These data pinpoint GnRH as an important factor of the AMH regulation, leading new opportunities for the understanding of AMH role in reproductive function and dysfunction.
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Affiliation(s)
- Josef van Helden
- Laboratory Diagnostic Center, University Hospital RWTH Aachen, Aachen, Germany
| | - Osman Evliyaoglu
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, Aachen, Germany
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, Aachen, Germany
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Garrel G, Denoyelle C, L'Hôte D, Picard JY, Teixeira J, Kaiser UB, Laverrière JN, Cohen-Tannoudji J. GnRH Transactivates Human AMH Receptor Gene via Egr1 and FOXO1 in Gonadotrope Cells. Neuroendocrinology 2019; 108:65-83. [PMID: 30368511 DOI: 10.1159/000494890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 10/26/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND/OBJECTIVES Anti-Müllerian hormone (AMH) signaling is critical for sexual differentiation and gonadal function. AMH receptor type 2 (AMHR2) is expressed in extragonadal sites such as brain, and pituitary and emerging evidence indicates that AMH biological action is much broader than initially thought. We recently reported that AMH signaling enhances follicle-stimulating hormone synthesis in pituitary gonadotrope cells. However, mechanisms regulating AMHR2 expression in these extragonadal sites remain to be explored. METHOD/RESULTS Here, we demonstrated in perifused murine LβT2 gonadotrope cells that Amhr2 expression is differentially regulated by GnRH pulse frequency with an induction under high GnRH pulsatility. Furthermore, we showed that GnRH transactivates the human AMHR2 promoter in LβT2 cells. Successive deletions of the promoter revealed the importance of a short proximal region (-53/-37 bp) containing an Egr1 binding site. Using site-directed mutagenesis of Egr1 motif and siRNA mediated-knockdown of Egr1, we demonstrated that Egr1 mediates basal and GnRH-dependent activity of the promoter, identifying Egr1 as a new transcription factor controlling hAMHR2 expression. We also showed that SF1 and β-catenin are required for basal promoter activity and demonstrated that both factors contribute to the GnRH stimulatory effect, independently of their respective binding sites. Furthermore, using a constitutively active mutant of FOXO1, we identified FOXO1 as a negative regulator of basal and GnRH-dependent AMHR2 expression in gonadotrope cells. CONCLUSIONS This study identifies GnRH as a regulator of human AMHR2 expression, further highlighting the importance of AMH signaling in the regulation of gonadotrope function.
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Affiliation(s)
- Ghislaine Garrel
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris, France
| | - Chantal Denoyelle
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris, France
| | - David L'Hôte
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris, France
| | - Jean-Yves Picard
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris, France
| | - Jose Teixeira
- Department of Obstetrics, Gynecology, and Reproductive Biology, Michigan State University, Grand Rapids, Michigan, USA
| | - Ursula B Kaiser
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Jean-Noël Laverrière
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris, France
| | - Joëlle Cohen-Tannoudji
- Physiologie de l'axe gonadotrope U1133, Institut National de la Santé et de la Recherche Médicale, Centre National de la Recherche Scientifique, Biologie Fonctionnelle et Adaptative UMR 8251, Sorbonne Paris Cité, Université Paris-Diderot, Paris,
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Kereilwe O, Kadokawa H. Bovine gonadotrophs express anti-Müllerian hormone (AMH): comparison of AMH mRNA and protein expression levels between old Holsteins and young and old Japanese Black females. Reprod Fertil Dev 2019; 31:810-819. [DOI: 10.1071/rd18341] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 11/26/2018] [Indexed: 11/23/2022] Open
Abstract
Anti-Müllerian hormone (AMH) is secreted from ovaries and stimulates gonadotrophin secretion from bovine gonadotroph cells. Other important hormones for endocrinological gonadotroph regulation (e.g. gonadotrophin-releasing hormone, inhibin and activin) have paracrine and autocrine roles. Therefore, in this study, AMH expression in bovine gonadotroph cells and the relationships between AMH expression in the bovine anterior pituitary (AP) and oestrous stage, age and breed were evaluated. AMH mRNA expression was detected in APs of postpubertal heifers (26 months old) by reverse transcription-polymerase chain reaction. Based on western blotting using an antibody to mature C-terminal AMH, AMH protein expression was detected in APs. Immunofluorescence microscopy utilising the same antibody indicated that AMH is expressed in gonadotrophs. The expression of AMH mRNA and protein in APs did not differ between oestrous phases (P>0.1). We compared expression levels between old Holsteins (79.2±10.3 months old) and young (25.9±0.6 months old) and old Japanese Black females (89.7±20.3 months old). The APs of old Holsteins exhibited lower AMH mRNA levels (P<0.05) but higher AMH protein levels than those of young Japanese Black females (P<0.05). In conclusion, bovine gonadotrophs express AMH and this AMH expression may be breed-dependent.
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