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Zhang H, Fang J, Liu Y, Zhu W, Xu Y, Zhang Y, Shen W, Li D, Hao C. Hsa_circ_0043532 contributes to PCOS through upregulation of CYP19A1 by acting as a ceRNA for hsa-miR-1270. J Ovarian Res 2024; 17:151. [PMID: 39039600 PMCID: PMC11265019 DOI: 10.1186/s13048-024-01474-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 07/08/2024] [Indexed: 07/24/2024] Open
Abstract
BACKGROUND Polycystic ovarian syndrome (PCOS) accounts for about 75% of anovulatory infertility. The cause of PCOS is not clear. CircRNAs acting as miRNA sponges mediate the post-transcriptional regulation of multiple genes. CYP19A1 is a limiting enzyme in the ovarian steroidogenesis pathway. However, the mechanism of circRNAs regulating granulosa cell (GC) estradiol secretion in PCOS remains to be elucidated. METHODS Bioinformatics was used to predict the potential target miRNAs of circ_0043532 and target genes of miR-1270. Target miRNAs and mRNA expression were verified by qRT-PCR in GCs from 45 women with PCOS and 65 non-PCOS. Western blot, ELISA and dual-luciferase reporter assays were applied to confirm the substrate of miR-1270. RESULTS Circ_0043532 and CYP19A1 were significant up-regulation in GCs from patients with PCOS. The predicted target miRNAs of circ_0053432, miR-1270, miR-576-5p, miR-421 and miR-142-5p, were notably decreased in GCs from patients with PCOS. Mechanistic experiments showed that circ_0043532 specifically binds to miR-1270. MiR-1270 was negatively regulated by circ_0043532. Concomitantly, miR-1270 inhibited CYP19A1 expression and estradiol production, which could be reversed by circ_0043532 over-expression. CONCLUSION We identified that circ_0043532/miR-1270/CYP19A1 axis contributes to the aberrant steroidogenesis of GCs from patients with PCOS. This study broadens the spectrum of pathogenic factors of PCOS, and circ_0043532 might be a potential therapeutic target for PCOS.
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Affiliation(s)
- Huimin Zhang
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
- College of Medicine, Qingdao University, Qingdao, China
| | - Jianye Fang
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
| | - Yingxue Liu
- College of Medicine, Qingdao University, Qingdao, China
| | - Wenqian Zhu
- The Second Hospital of Shandong University, Jinan, China
| | - Yangying Xu
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
- College of Medicine, Qingdao University, Qingdao, China
| | - Yu Zhang
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
- College of Medicine, Qingdao University, Qingdao, China
| | - Wei Shen
- College of Life Science and Technology, Qingdao Agricultural University, Qingdao, China
| | - Duan Li
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China
- College of Medicine, Qingdao University, Qingdao, China
| | - Cuifang Hao
- Centre for Reproductive Medicine, Women and Children's Hospital, Qingdao University, Qingdao, China.
- Branch of Shandong Provincial Clinical Research Center for Reproductive Health, Qingdao, China.
- College of Medicine, Qingdao University, Qingdao, China.
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Kyei G, Sobhani A, Nekonam S, Shabani M, Ebrahimi F, Qasemi M, Salahi E, Fardin A. Assessing the effect of MitoQ 10 and Vitamin D3 on ovarian oxidative stress, steroidogenesis and histomorphology in DHEA induced PCOS mouse model. Heliyon 2020; 6:e04279. [PMID: 32760818 PMCID: PMC7393412 DOI: 10.1016/j.heliyon.2020.e04279] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/13/2020] [Accepted: 06/18/2020] [Indexed: 02/07/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) continues to be one of the most complex reproductive and endocrine disorder among women of reproductive age. Recent reports have identified close interaction of Vitamin D deficiency and oxidative stress (OS) in exacerbating the pathophysiology of PCOS. This current study aims at assessing the combine effect of MitoQ10 and Vitamin D3 on dehydroepiandrosterone (DHEA) induced PCOS. Following successful induction of PCOS using DHEA, mice were organized into five groups (n = 8) namely: Negative Control (NC), Vitamin D3 Vehicle (VDV), Vitamin D3 (VD), MitoQ10 (MQ), Vitamin D3 plus MitoQ10 (V+M) and DHEA, ethanol and distilled water, Vitamin D3, MitoQ10 and Vitamin D3 plus MitoQ10 were respectively administered for 20 consecutive days. The study also included positive control (PC) group (n = 8) in which no treatment was applied. Treatment effects were assessed using hormonal assays, biochemical assays, Real-Time PCR, western blotting and histological analysis. Combination of Vitamin D3 and MitoQ10 significantly reduced levels of estradiol, progesterone, FSH, LH, LH/FSH, SOD and MDA. The expression rate of mRNAs of 3β-HSD, Cyp19a1, Cyp11a1, StAR, Keap1, HO-1 and Nrf2 were also significantly low in V+M group. Moreover, the histomorphological inspection of ovaries from this group revealed many healthy follicles at various stages of development including few atretic follicles, pre-antral and antral follicles and many corpora lutea. The characteristics observed in this group were in many ways similar to that of the PC group. The combination of MitoQ10 and Vitamin D3 may be potential candidate to ameliorate PCOS.
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Affiliation(s)
- Gordon Kyei
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Aligholi Sobhani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeid Nekonam
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Shabani
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Ebrahimi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Qasemi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Elnaz Salahi
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Amidi Fardin
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Photobiomodulation can improve ovarian activity in polycystic ovary syndrome-induced rats. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 194:6-13. [PMID: 30897401 DOI: 10.1016/j.jphotobiol.2019.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 12/04/2018] [Accepted: 03/10/2019] [Indexed: 11/20/2022]
Abstract
Follicular cystic ovary disease is a common reproductive disorder in women and females of domestic animals, characterized by anovulation and the persistence of follicle is a common cause of reproductive failure in mammalian. Polycystic ovary syndrome (PCOS) is characterized by hyperandrogenism (HA), chronic anovulation and polycystic ovaries, and it is a common reproductive endocrine disease with clinical manifestations including hirsutism, acne, infertility and obesity that can affect 5-20% of women in their reproductive age. Photobiomodulation (PBM) has been investigated and used in clinical practice, related to biomodulatory influences on cellular functions in animals and humans, both in vivo and in vitro. In this study, we include endocrine and reproductive features in a rat model for PCOS and the effects of PBM on ovarian activities. Forty-five adult female Wistar rats PCOS-induced by a single dose of the estradiol valerate (EV) were used in the study. After the EV injection for PCO induction, rats were divided into 9 groups (n = 5/group) named C30, C45 and C60 (Control group), S30, S45 and S60 (PCO group) and L30, L45 and L60 (PCO/Laser group). The rats were irradiated with laser 3 times/week. The results shown that EV PCO-induced rats had increased body mass, reduced ovary mass, and reduced GSI. The plasma levels of P4 and T were increased, and the LH plasma level was decreased by PBM stimulation. The number of ovarian follicles and corpus luteum were increased, and the number of ovarian cysts was decreased by PBM stimulation. Thus, reproductive and endocrine characteristics were modulated by PBM.
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Liu C, Ran X, Yu C, Xu Q, Niu X, Zhao P, Wang J. Whole-genome analysis of structural variations between Xiang pigs with larger litter sizes and those with smaller litter sizes. Genomics 2018; 111:310-319. [PMID: 29481841 DOI: 10.1016/j.ygeno.2018.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 02/08/2018] [Accepted: 02/11/2018] [Indexed: 11/30/2022]
Abstract
To gain a better knowledge of structural variations (SVs) in Xiang pig, we used next-generation sequencing to analyze the Xiang pigs with larger (XL) or smaller litter sizes (XS). Our analysis yielded 28,040 putative SVs in the Xiang pig. These SVs distributed throughout all of chromosomes. Some functional regions including exons and untranslated regions were less varied than introns and intergenic regions. We detected 4637 and 4119 specific SVs, which contained 1697 and 1582 genes in XL and XS group, respectively. These genes were mainly enriched in the well-known pathways involved in development and reproduction processes. Population validation was carried out on 50 SVs candidates using PCR method in 144 Xiang pig crowds. All of 50 SVs were confirmed by PCR method and 14 SVs were associated with the litter size of Xiang pigs. These results may be helpful for the elucidation of growth and reproduction regulation in Xiang pig.
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Affiliation(s)
- Chang Liu
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Xueqin Ran
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China.
| | - Changyan Yu
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Qian Xu
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Xi Niu
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China
| | - Pengju Zhao
- College of Animal Science and Technology, China Agricultural University, Beijing 100083, China
| | - Jiafu Wang
- Institute of Agro-Bioengineering, College of Animal Science, Guizhou University, Guiyang 550025, China; Tongren University, Tongren 554300, China.
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Bakhshalizadeh S, Amidi F, Alleyassin A, Soleimani M, Shirazi R, Shabani Nashtaei M. Modulation of steroidogenesis by vitamin D3 in granulosa cells of the mouse model of polycystic ovarian syndrome. Syst Biol Reprod Med 2017; 63:150-161. [DOI: 10.1080/19396368.2017.1296046] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Shabnam Bakhshalizadeh
- Department of Anatomy, School of medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Fardin Amidi
- Department of Anatomy, School of medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ashraf Alleyassin
- Department of Obstetrics and Gynecology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Masoud Soleimani
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Reza Shirazi
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
- Department of Anatomical Sciences, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Shabani Nashtaei
- Department of Anatomy, School of medicine, Tehran University of Medical Sciences, Tehran, Iran
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Wojtkiewicz J, Jana B, Kozłowska A, Crayton R, Majewski M, Zalecki M, Baranowski W, Radziszewski P. Innervation pattern of polycystic ovaries in the women. J Chem Neuroanat 2014; 61-62:147-52. [DOI: 10.1016/j.jchemneu.2014.05.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 05/27/2014] [Accepted: 05/27/2014] [Indexed: 01/19/2023]
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Rahman KM, Lovich JE, Lam C, Camp ME, Wiley AA, Bartol FF, Bagnell CA. Nursing supports neonatal porcine testicular development. Domest Anim Endocrinol 2014; 48:84-92. [PMID: 24906933 DOI: 10.1016/j.domaniend.2014.02.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 02/22/2014] [Accepted: 02/25/2014] [Indexed: 12/11/2022]
Abstract
The lactocrine hypothesis suggests a mechanism whereby milk-borne bioactive factors delivered to nursing offspring affect development of neonatal tissues. The objective of this study was to assess whether nursing affects testicular development in neonatal boars as reflected by: (1) Sertoli cell number and proliferation measured by GATA-4 expression and proliferating cell nuclear antigen immunostaining patterns; (2) Leydig cell development and steroidogenic activity as reflected by insulin-like factor 3 (INSL3), and P450 side chain cleavage (scc) enzyme expression; and (3) expression of estrogen receptor-alpha (ESR1), vascular endothelial growth factor (VEGF) A, and relaxin family peptide receptor (RXFP) 1. At birth, boars were randomly assigned (n = 6-7/group) to nurse ad libitum or to be pan fed porcine milk replacer for 48 h. Testes were collected from boars at birth, before nursing and from nursed and replacer-fed boars at 50 h on postnatal day (PND) 2. Sertoli cell proliferating cell nuclear antigen labeling index increased (P < 0.01) from birth to PND 2 in nursed, but not in replacer-fed boars. Sertoli cell number and testicular GATA-4 protein levels increased (P < 0.01) from PND 0 to PND 2 only in nursed boars. Neither age nor nursing affected testicular INSL3, P450scc, ESR1, or VEGFA levels. However, testicular relaxin family peptide receptor 1 (RXFP1) levels increased (P < 0.01) with age and were greater in replacer-fed boars on PND 2. Results suggest that nursing supports neonatal porcine testicular development and provide additional evidence for the importance of lactocrine signaling in pigs.
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Affiliation(s)
- K M Rahman
- Department of Animal Sciences, Endocrinology and Animal Biosciences Program, Rutgers University, New Brunswick, NJ, USA
| | - J E Lovich
- Department of Animal Sciences, Endocrinology and Animal Biosciences Program, Rutgers University, New Brunswick, NJ, USA
| | - C Lam
- Department of Animal Sciences, Endocrinology and Animal Biosciences Program, Rutgers University, New Brunswick, NJ, USA
| | - M E Camp
- Department of Animal Sciences, Endocrinology and Animal Biosciences Program, Rutgers University, New Brunswick, NJ, USA
| | - A A Wiley
- Department of Anatomy, Physiology and Pharmacology, Cellular and Molecular Biosciences Program, Auburn University, Auburn, AL, USA
| | - F F Bartol
- Department of Anatomy, Physiology and Pharmacology, Cellular and Molecular Biosciences Program, Auburn University, Auburn, AL, USA
| | - C A Bagnell
- Department of Animal Sciences, Endocrinology and Animal Biosciences Program, Rutgers University, New Brunswick, NJ, USA.
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Kozłowska A, Majewski M, Jana B. Changes in the cholinergic innervation pattern of porcine ovaries with cysts induced by dexamethasone administration. J Mol Neurosci 2014; 54:10-9. [PMID: 24519145 PMCID: PMC4125811 DOI: 10.1007/s12031-014-0239-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 01/14/2014] [Indexed: 12/22/2022]
Abstract
We revealed earlier that induction of ovarian cysts in gilts by dexamethasone phosphate disodium salt (DXM) administration from the follicular phase of the estrous cycle (EC) changed the cholinergic innervation of the gonad. In the present study, the innervation of porcine ovaries by vesicular acetylcholine transporter (VAChT)-, neuronal nitric oxide synthase (nNOS)-, vasoactive intestinal peptide (VIP)- and somatostatin (SOM)-immunoreactive (IR) fibres, after induction of cystic changes from the middle luteal phase of the EC, was determined. The cystic changes were induced by DXM injections from days 7 to 21 of the EC, and 11 days later, the ovaries were collected. In the cystic ovaries, VAChT-, nNOS- and SOM-IR fibres were found around cysts and small tertiary follicles; nNOS-IR and also VAChT-IR fibres were observed near secondary follicles and veins; and VAChT- and nNOS-IR fibres were not found around cortical arteries. The number of VIP-IR fibres increased near the cysts and within the ground plexus, while the number of VAChT-IR fibres decreased within the medullar part of this structure. Thus, our study showed changes in the cholinergic innervation pattern of the porcine cystic ovaries induced from the middle phase of the cycle and confirmed that cystic ovary innervation depends partly on the phase of the EC in which the induction of cysts was started.
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Affiliation(s)
- A Kozłowska
- Division of Reproductive Biology, Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Tuwima 10, 10-748, Olsztyn, Poland,
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Rasmussen MK, Ekstrand B, Zamaratskaia G. Regulation of 3β-hydroxysteroid dehydrogenase/Δ⁵-Δ⁴ isomerase: a review. Int J Mol Sci 2013; 14:17926-42. [PMID: 24002028 PMCID: PMC3794760 DOI: 10.3390/ijms140917926] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 08/05/2013] [Accepted: 08/21/2013] [Indexed: 12/15/2022] Open
Abstract
This review focuses on the expression and regulation of 3β-hydroxysteroid dehydrogenase/Δ5-Δ4 isomerase (3β-HSD), with emphasis on the porcine version. 3β-HSD is often associated with steroidogenesis, but its function in the metabolism of both steroids and xenobiotics is more obscure. Based on currently available literature covering humans, rodents and pigs, this review provides an overview of the present knowledge concerning the regulatory mechanisms for 3β-HSD at all omic levels. The HSD isoenzymes are essential in steroid hormone metabolism, both in the synthesis and degradation of steroids. They display tissue-specific expression and factors influencing their activity, which therefore indicates their tissue-specific responses. 3β-HSD is involved in the synthesis of a number of natural steroid hormones, including progesterone and testosterone, and the hepatic degradation of the pheromone androstenone. In general, a number of signaling and regulatory pathways have been demonstrated to influence 3β-HSD transcription and activity, e.g., JAK-STAT, LH/hCG, ERα, AR, SF-1 and PPARα. The expression and enzymic activity of 3β-HSD are also influenced by external factors, such as dietary composition. Much of the research conducted on porcine 3β-HSD is motivated by its importance for the occurrence of the boar taint phenomenon that results from high concentrations of steroids such as androstenone. This topic is also examined in this review.
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Affiliation(s)
| | - Bo Ekstrand
- Department of Food Science, Aarhus University, DK-8830 Tjele, Denmark; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +45-8715-7981; Fax: +45-8715-4891
| | - Galia Zamaratskaia
- Department of Food Science, BioCenter, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden; E-Mail:
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KOZŁOWSKA A, WOJTKIEWICZ J, MAJEWSKI M, JANA B. The Noradrenergic Innervation and Steroidogenic Activity of Porcine Cystic Ovaries. Physiol Res 2013; 62:421-33. [DOI: 10.33549/physiolres.932471] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The aim of the present study was to investigate the distribution and density of noradrenergic nerve fibres (NNFs), content of catecholamines (CATs) and steroids in the cystic ovaries of gilts receiving DXM from middle luteal phase. Cystic status of ovaries was induced by i.m. DXM injections on days 7-21 of the estrous cycle. During the same time, gilts in the control group received saline. The ovaries were collected on predicted day 11 of the second studied estrous cycle. The cystic ovaries were supplied by more numerous NNFs than the control gonads. Moreover after DXM injections, the content of CATs and progesterone and androstendione (A4) in the cystic wall were elevated, while the levels of A4, testosterone and estradiol-17β in the cystic fluid were lowered. Our results show that in the porcine cystic ovaries, induced by DXM injections from middle phase of estrous cycle, increased the density of NNFs and level of CATs, and that it was accompanied by changes in the content of steroids. Moreover, this study is a further confirmation that the morphological and functional changes of cystic ovaries are partly dependent on phase of the estrous cycle in which the induction of the ovarian cysts was initiated.
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Affiliation(s)
- A. KOZŁOWSKA
- Department of Human Physiology, Faculty of Medical Sciences, University of Warmia and Mazury, Olsztyn, Poland
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Jana B, Kozłowska A, Wojtkiewicz J, Majewski M. Effect of the denervation of porcine ovaries on dexamethasone-induced cyst formation. Acta Vet Hung 2013; 61:220-33. [PMID: 23661390 DOI: 10.1556/avet.2013.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Previously, we have shown that the activity of noradrenergic nerve fibres increased and the steroid content changed in porcine ovaries with dexamethasone-(DXM-) induced polycystic status. To better understand the role of the ovarian nerves in the formation of cystic status, the morphology and steroidogenic activity of the ovaries of DXM-treated gilts after denervation of the gonads were investigated in this study. Ovarian denervation was performed on day 3 of the first studied oestrous cycle and then, on days 7-21 of the cycle, DXM was administered. Following neurectomy and DXM treatment, cysts, medium-sized follicles and corpora lutea were not present, while the number of small-sized follicles increased. Denervation and DXM application led to a reduction in the number of dopamine-β-hydroxylase- and/or neuropeptide Y-immunoreactive nerve fibres. The concentrations of progesterone, androstenedione, testosterone and oestradiol-17β in the follicular fluid and/or in the wall of small-sized follicles of the experimental gilts were lower than in the controls. A similar result was demonstrated for P450scc, 3β-HSD and P450arom protein contents in the small follicles. Our data showed that DXM was not able to stimulate the formation of cysts in denervated porcine ovaries, indicating that the ovarian peripheral nerves might participate in the aetiopathogenesis of polycystic status.
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Affiliation(s)
- Barbara Jana
- 1 Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences Division of Reproductive Biology Tuwima 10 10-748 Olsztyn Poland
| | | | - Joanna Wojtkiewicz
- 3 University of Warmia and Mazury Department of Neurology and Neurosurgery, Faculty of Medical Sciences Olsztyn Poland
| | - Mariusz Majewski
- 2 University of Warmia and Mazury Department of Human Physiology Olsztyn Poland
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Gregoraszczuk EŁ, Rak-Mardyła A. Supraphysiological leptin levels shift the profile of steroidogenesis in porcine ovarian follicles toward progesterone and testosterone secretion through increased expressions of CYP11A1 and 17β-HSD: a tissue culture approach. Reproduction 2013; 145:311-7. [DOI: 10.1530/rep-12-0269] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Evidence from both clinical and animal studies suggests that exposure to excess androgens results in cyst formation. The present in vitro study assessed the effects of supraphysiological concentrations of leptin (20 and 40 ng/ml) on progesterone (P4), androstenedione androstendione (A4), testosterone and estradiol (E2) secretion by ELISA and the expression of CYP11A1, CYP17, 17β-hydroxysteroid dehydrogenase (17β-HSD) and CYP19 by western blot to answer the question of whether leptin could be independent risk factor for cyst formation in pigs. Small- and medium-sized ovarian follicles were collected from prepubertal and cycling pigs. Increased P4 and testosterone secretions were observed in both small- and medium-sized follicles in prepubertal and cycling animals whereas there was no change in E2 secretion. Leptin treatment resulted in an increase in CYP11A1 and 17β-HSD protein expression but had no effect on CYP17 and CYP19 expression in follicles of either size from prepubertal and cycling pigs. Results of presented data suggest that leptin in elevated doses, by stimulatory effect on CYP11A1 and 17β-HSD protein expression resulting in elevated P4 and testosterone secretions could be an independent risk factor for cyst formation in both prepubertal and cycling pigs.
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