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Jin R, Chen A, Ye Y, Ren Y, Lu J, Xuan F, Zhou W. Effect of berberine combined with metformin on autophagy in polycystic ovary syndrome by regulating AMPK/AKT/mTOR pathway. Mol Reprod Dev 2024; 91:e23768. [PMID: 39155689 DOI: 10.1002/mrd.23768] [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: 05/14/2024] [Revised: 07/05/2024] [Accepted: 08/01/2024] [Indexed: 08/20/2024]
Abstract
The pathologic mechanism of polycystic ovary syndrome (PCOS) is related to increased autophagy of granulosa cells. Both berberine and metformin have been shown to improve PCOS, but whether the combination of berberine and metformin can better improve PCOS by inhibiting autophagy remains unclear. PCOS models were constructed by injecting dehydroepiandrosterone into rats, and berberine, metformin or berberine combined with metformin was administered to rats after modeling. Rats' body weight and ovarian weight were measured before and after modeling. Histopathological examination of ovarian tissue and estrous cycle analysis of rats were performed. Insulin resistance, hormone levels, oxidative stress, and lipid metabolism in PCOS rats were assessed. Expression of the AMPK/AKT/mTOR pathway and autophagy-related proteins was analyzed by Western blot assays. Granulosa cells were isolated from rat ovarian tissue and identified by immunofluorescence staining followed by transmission electron microscopy analysis. Berberine combined with metformin reduced the body weight and ovarian weight of PCOS rats, increased the number of primordial and primary follicles, decreased the number of secondary and atretic follicles, normalized the estrous cycle, and improved insulin resistance, androgen biosynthesis, oxidative stress and lipid metabolism disorders, and increased estrogen production. In addition, berberine combined with metformin reduced the number of autophagosomes in granulosa cells, which may be related to AMPK/AKT/mTOR pathway activation, decreased Beclin1 and LC3II/LC3I levels, and increased p62 expression. Berberine combined with metformin could inhibit autophagy by activating the AMPK/AKT/mTOR pathway in PCOS, indicating that berberine combined with metformin is a potential treatment strategy for PCOS.
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Affiliation(s)
- Ruiying Jin
- Department of Gynecology, Jiaojiang Maternal and Child Health Hospital, Taizhou City, China
| | - Aixue Chen
- Department of Gynecology, Changxing People's Hospital of Chongming District, Shanghai, China
| | - Yongju Ye
- Department of Gynaecology, Lishui Hospital of Traditional Chinese Medicine, Lishui, China
| | - Yuefang Ren
- Department of Gynecology, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Jiali Lu
- Department of Gynecology, Huzhou Maternity & Child Health Care Hospital, Huzhou, China
| | - Feilan Xuan
- Department of Obstetrics and Gynecology, Hangzhou TCM Hospital Affiliated to Zhejiang Chinese Medical University, Hangzhou City, China
| | - Weimei Zhou
- Department of Ultrasound, Jiaojiang Maternal and Child Health Hospital, Taizhou City, China
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2
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高 慧, 钱 贝, 倪 艳, 孙 莉, 傅 君. [Research Progress in the Pathogenesis of Polycystic Ovary Syndrome]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2024; 55:1049-1054. [PMID: 39170002 PMCID: PMC11334293 DOI: 10.12182/20240760208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Indexed: 08/23/2024]
Abstract
Polycystic ovary syndrome (PCOS) is one of the most common gynecological endocrine disorders. Most pathophysiological changes of PCOS begin in the peripubertal phase, and these pathophysiological changes will continuously affect women's health in the later stages of their lives. The pathogenic mechanisms of PCOS remain unclear, involving key aspects such as the regulation of hypothalamic-pituitary function, ovarian cellular functions, androgen levels, and insulin resistance. Herein, we summarized the latest findings on the pathogenesis of PCOS from the perspectives of the genetic background, intrauterine development, neuroendocrine function, inflammatory factors, gut microbiome, and environmental factors. This review will help provide new ideas for a deeper understanding of the disease, as well as its clinical diagnosis and treatment.
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Affiliation(s)
- 慧慧 高
- 浙江大学医学院附属儿童医院 小儿青少年妇科 国家儿童健康与疾病临床医学研究中心 (杭州 310052)National Clinical Research Center for Child Health, Department of Pediatric and Adolescent Gynecology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - 贝冉 钱
- 浙江大学医学院附属儿童医院 小儿青少年妇科 国家儿童健康与疾病临床医学研究中心 (杭州 310052)National Clinical Research Center for Child Health, Department of Pediatric and Adolescent Gynecology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - 艳 倪
- 浙江大学医学院附属儿童医院 小儿青少年妇科 国家儿童健康与疾病临床医学研究中心 (杭州 310052)National Clinical Research Center for Child Health, Department of Pediatric and Adolescent Gynecology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - 莉颖 孙
- 浙江大学医学院附属儿童医院 小儿青少年妇科 国家儿童健康与疾病临床医学研究中心 (杭州 310052)National Clinical Research Center for Child Health, Department of Pediatric and Adolescent Gynecology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - 君芬 傅
- 浙江大学医学院附属儿童医院 小儿青少年妇科 国家儿童健康与疾病临床医学研究中心 (杭州 310052)National Clinical Research Center for Child Health, Department of Pediatric and Adolescent Gynecology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
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Bayrami A, Sojoudi M, Rahim Pouran S, Habibi-Yangjeh A, Sojoudi S. Linum usitatissimum Delivery over Chitosan Nanobiopolymer: Enhanced Effects on Polycystic Ovary Syndrome Condition. IET Nanobiotechnol 2024; 2024:6693566. [PMID: 39050969 PMCID: PMC11268972 DOI: 10.1049/2024/6693566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 06/12/2024] [Accepted: 07/04/2024] [Indexed: 07/27/2024] Open
Abstract
Herein, chitosan nanoparticle (CHIT) was used as a safe and biocompatible matrix to carry flaxseed (Linum usitatissimum L.) extract (FSE). The number of main features and bio-interface properties of CHIT-FSE were determined by SEM, DLS, FTIR, XRD, TGA, and zeta potential analyses and compared to those of chitosan lacking FSE. A GC-MS analysis was also conducted to reveal the bioactive compounds of FSE. The active anchoring of the FSE phytomolecules over chitosan nanoparticles with enhanced thermal and structural stability was correspondingly verified. Subsequently, the influence of CHIT-FSE, CHIT-TPP, and FSE supplementation was assessed on hormonal and biochemical markers of polycystic ovary syndrome (PCOS) in female rats and compared with untreated and healthy control groups. After 16 days of treatment, CHIT-FSE represented the best performance for controlling the serum levels of the studied biochemical (lipid profile and blood glucose level) and hormonal (insulin, testosterone, luteinizing, and follicle-stimulating hormone) parameters. Considering the negligible therapeutic activity of CHIT-TPP, the enhanced activity of CHIT-FSE compared to only FSE was expounded based on the potent action of chitosan nanoparticles in enhanced stabilization, bioavailability, transport, and permeability of the therapeutically important phytomolecules. As per the results of this investigation, supporting medically important biomolecules over chitosan can enhance their therapeutic effectiveness in controlling PCOS.
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Affiliation(s)
- Abolfazl Bayrami
- Department of BiologyFaculty of ScienceUniversity of Mohaghegh Ardabili, Ardabil P.O. Box 179, Iran
| | - Maryam Sojoudi
- Department of BiologyFaculty of ScienceUniversity of Mohaghegh Ardabili, Ardabil P.O. Box 179, Iran
| | - Shima Rahim Pouran
- Department of Environmental and Occupational HealthSocial Determinants of Health Research CentreArdabil University of Medical Sciences, Ardabil, Iran
| | - Aziz Habibi-Yangjeh
- Department of ChemistryFaculty of ScienceUniversity of Mohaghegh Ardabili, Ardabil P.O. Box 179, Iran
| | - Sanaz Sojoudi
- Department of BiologyFaculty of ScienceUniversity of Mohaghegh Ardabili, Ardabil P.O. Box 179, Iran
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Moenter SM, Starrett JR. Estradiol action in the female hypothalamo-pituitary-gonadal axis. J Neuroendocrinol 2024:e13390. [PMID: 38606585 DOI: 10.1111/jne.13390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Revised: 03/06/2024] [Accepted: 03/27/2024] [Indexed: 04/13/2024]
Abstract
It has now been about a century since a flurry of discoveries identified first the pituitary, then more specifically the anterior pituitary and soon thereafter the central nervous system as components regulating gonadal and downstream reproductive functions. This was an era of ablation/replacement designs using at first rudimentary and then increasingly pure preparations of gonadal and pituitary "activities" or transplanting actual glands, whole or homogenized, among subjects. There was, of course, controversy as is typical of lively and productive scientific debates to this day. The goals of this commentary are to briefly review the history of this work and how the terms referring to interactions among the components of the hypothalamo (as the central neural component was soon associated with)-pituitary-gonadal (HPG) axis evolved, and then to question if the current terms used have kept up with our understanding of the system. The focus in this review will be the actions of estradiol primarily upon the hypothalamus. Important actions of progesterone on the hypothalamus as well as both steroids on the pituitary response to hypothalamic factors are both acknowledged and largely ignored in this document, as are any sex differences as we focus on females.
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Affiliation(s)
- Suzanne M Moenter
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Obstetrics & Gynecology, University of Michigan, Ann Arbor, Michigan, USA
- The Reproductive Sciences Program, University of Michigan, Ann Arbor, Michigan, USA
| | - J Rudolph Starrett
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
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Jaime J, DeFazio RA, Moenter SM. Development and prenatal exposure to androgens alter potassium currents in gonadotropin-releasing hormone neurons from female mice. J Neuroendocrinol 2024; 36:e13373. [PMID: 38403894 PMCID: PMC10939810 DOI: 10.1111/jne.13373] [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: 11/21/2023] [Revised: 01/24/2024] [Accepted: 01/30/2024] [Indexed: 02/27/2024]
Abstract
Pulsatile gonadotropin-releasing hormone (GnRH) release is critical for reproduction. Disruptions to GnRH secretion patterns may contribute to polycystic ovary syndrome (PCOS). Prenatally androgenized (PNA) female mice recapitulate many neuroendocrine abnormalities observed in PCOS patients. PNA and development induce changes in spontaneous GnRH neuron firing rate, response to synaptic input, and the afterhyperpolarization potential of the action potential. We hypothesized potassium currents are altered by PNA treatment and/or development. Whole-cell patch-clamp recordings were made of transient and residual potassium currents of GnRH neurons in brain slices from 3-week-old and adult control and PNA females. At 3 weeks of age, PNA treatment increased transient current density versus controls. Development and PNA altered voltage-dependent activation and inactivation of the transient current. In controls, transient current activation and inactivation were depolarized at 3 weeks of age versus in adulthood. In GnRH neurons from 3-week-old mice, transient current activation and inactivation were more depolarized in control than PNA mice. Development and PNA treatment interacted to shift the time-dependence of inactivation and recovery from inactivation. Notably, in cells from adult PNA females, recovery was prolonged compared to all other groups. Activation of the residual current occurred at more depolarized membrane potentials in 3-week-old than adult controls. PNA depolarized activation of the residual current in adults. These findings demonstrate the properties of GnRH neuron potassium currents change during typical development, potentially contributing to puberty, and further suggest PNA treatment may both alter some typical developmental changes and induce additional modifications, which together may underlie aspects of the PNA phenotype. There was not any clinical trial involved in this work.
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Affiliation(s)
- Jennifer Jaime
- The Neuroscience Graduate Program, University of Michigan, Ann Arbor, Michigan, USA
| | - R Anthony DeFazio
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Suzanne M Moenter
- The Neuroscience Graduate Program, University of Michigan, Ann Arbor, Michigan, USA
- Department of Molecular & Integrative Physiology, University of Michigan, Ann Arbor, Michigan, USA
- Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan, USA
- Department of Obstetrics & Gynecology, University of Michigan, Ann Arbor, Michigan, USA
- The Reproductive Sciences Program, University of Michigan, Ann Arbor, Michigan, USA
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6
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Abbott DH, Hutcherson BA, Dumesic DA. Anti-Müllerian Hormone: A Molecular Key to Unlocking Polycystic Ovary Syndrome? Semin Reprod Med 2024; 42:41-48. [PMID: 38908381 DOI: 10.1055/s-0044-1787525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2024]
Abstract
Anti-Müllerian hormone (AMH) is an important component within androgen receptor (AR)-regulated pathways governing the hyperandrogenic origin of polycystic ovary syndrome (PCOS). In women with PCOS, granulosa cell AMH overexpression in developing ovarian follicles contributes to elevated circulating AMH levels beginning at birth and continuing in adolescent daughters of PCOS women. A 6 to 7% incidence among PCOS women of gene variants coding for AMH or its receptor, AMHR2, suggests genetic contributions to AMH-related pathogenesis. Discrete gestational AMH administration to pregnant mice induces hypergonadotropic hyperandrogenic, PCOS-like female offspring with high circulating AMH levels that persist over three generations, suggesting epigenetic contributions to PCOS through developmental programming. Moreover, adult-onset, selective hyperactivation of hypothalamic neurons expressing gonadotropin-releasing hormone (GnRH) induces hypergonadotropic hyperandrogenism and PCOS-like traits in female mice. Both gestational and adult AMH inductions of PCOS-like traits are prevented by GnRH antagonist coadministration, implicating luteinizing hormone-dependent ovarian theca cell testosterone (T) action, mediated through the AR in AMH-induced pathogenesis. Interestingly, gestational or peripubertal exogenous T or dihydrotestosterone induction of PCOS-like traits in female mice, rats, sheep, and monkeys fails to elicit ovarian AMH hypersecretion; thus, AMH excess per se may lead to a distinct pathogenic contribution to hyperandrogenic PCOS origins.
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Affiliation(s)
- David H Abbott
- Department of Obstetrics and Gynecology, University of Wisconsin, Madison, Wisconsin
- Wisconsin National Primate Research Center, University of Wisconsin, Madison, Wisconsin
- Endocrinology and Reproductive Physiology Training Program, University of Wisconsin, Madison, Wisconsin
| | - Beverly A Hutcherson
- Wisconsin National Primate Research Center, University of Wisconsin, Madison, Wisconsin
- Endocrinology and Reproductive Physiology Training Program, University of Wisconsin, Madison, Wisconsin
- Dean's Office, University of Wisconsin School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin
| | - Daniel A Dumesic
- Department of Obstetrics and Gynecology, University of California, Los Angeles, California
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Khatun M, Lundin K, Naillat F, Loog L, Saarela U, Tuuri T, Salumets A, Piltonen TT, Tapanainen JS. Induced Pluripotent Stem Cells as a Possible Approach for Exploring the Pathophysiology of Polycystic Ovary Syndrome (PCOS). Stem Cell Rev Rep 2024; 20:67-87. [PMID: 37768523 PMCID: PMC10799779 DOI: 10.1007/s12015-023-10627-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/05/2023] [Indexed: 09/29/2023]
Abstract
Polycystic ovary syndrome (PCOS) is the most prevalent endocrine condition among women with pleiotropic sequelae possessing reproductive, metabolic, and psychological characteristics. Although the exact origin of PCOS is elusive, it is known to be a complex multigenic disorder with a genetic, epigenetic, and environmental background. However, the pathogenesis of PCOS, and the role of genetic variants in increasing the risk of the condition, are still unknown due to the lack of an appropriate study model. Since the debut of induced pluripotent stem cell (iPSC) technology, the ability of reprogrammed somatic cells to self-renew and their potential for multidirectional differentiation have made them excellent tools to study different disease mechanisms. Recently, researchers have succeeded in establishing human in vitro PCOS disease models utilizing iPSC lines from heterogeneous PCOS patient groups (iPSCPCOS). The current review sets out to summarize, for the first time, our current knowledge of the implications and challenges of iPSC technology in comprehending PCOS pathogenesis and tissue-specific disease mechanisms. Additionally, we suggest that the analysis of polygenic risk prediction based on genome-wide association studies (GWAS) could, theoretically, be utilized when creating iPSC lines as an additional research tool to identify women who are genetically susceptible to PCOS. Taken together, iPSCPCOS may provide a new paradigm for the exploration of PCOS tissue-specific disease mechanisms.
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Affiliation(s)
- Masuma Khatun
- Department of Obstetrics and Gynecology, University of Helsinki, Helsinki University Central Hospital, Haartmaninkatu 8, Helsinki, 00029 HUS, Finland.
| | - Karolina Lundin
- Department of Obstetrics and Gynecology, University of Helsinki, Helsinki University Central Hospital, Haartmaninkatu 8, Helsinki, 00029 HUS, Finland
| | - Florence Naillat
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Liisa Loog
- Institute of Genomics, University of Tartu, Tartu, 51010, Estonia
- Department of Genetics, University of Cambridge, Cambridge, CB2 3EH, UK
| | - Ulla Saarela
- Department of Obstetrics and Gynecology, Research Unit of Clinical Medicine, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Timo Tuuri
- Department of Obstetrics and Gynecology, University of Helsinki, Helsinki University Central Hospital, Haartmaninkatu 8, Helsinki, 00029 HUS, Finland
| | - Andres Salumets
- Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tartu, Tartu, 50406, Estonia
- Competence Centre of Health Technologies, Tartu, 50411, Estonia
- Division of Obstetrics and Gynecology, Department of Clinical Science, Intervention and Technology, Karolinska Institutet and Karolinska University Hospital, Huddinge, Stockholm, 14186, Sweden
| | - Terhi T Piltonen
- Department of Obstetrics and Gynecology, Research Unit of Clinical Medicine, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Juha S Tapanainen
- Department of Obstetrics and Gynecology, University of Helsinki, Helsinki University Central Hospital, Haartmaninkatu 8, Helsinki, 00029 HUS, Finland
- Department of Obstetrics and Gynecology, HFR - Cantonal Hospital of Fribourg and University of Fribourg, Fribourg, Switzerland
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Huffman AM, Rezq S, Basnet J, Romero DG. Biomarkers in Polycystic Ovary Syndrome. CURRENT OPINION IN PHYSIOLOGY 2023; 36:100717. [PMID: 37842179 PMCID: PMC10569288 DOI: 10.1016/j.cophys.2023.100717] [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] [Indexed: 10/17/2023]
Abstract
Polycystic Ovary Syndrome (PCOS) is the most common endocrine disorder in reproductive-age women. PCOS is diagnosed by the presence of two of the following three characteristics: hyperandrogenemia and/or hyperandrogenism, oligo/amenorrhea, and polycystic ovarian morphology. PCOS is associated with reproductive and non-reproductive complications, including obesity, insulin resistance and diabetes, dyslipidemia, and increased blood pressure. There is an urgent need for biomarkers that address both the reproductive and non-reproductive aspects of this complex syndrome. This review focuses on biomarkers, or potential ones, associated with the reproductive and non-reproductive aspects of PCOS, including anthropometric and clinical biomarkers, insulin and the IGF-1 system, lipids, anti-Müllerian hormone and gonadotropins, steroids, inflammatory and renal injury biomarkers, oxidative stress, and non-coding RNAs. We expect that this review will bring some light on the recent updates in the field and encourage researchers to join the exciting and promising field of PCOS biomarkers.
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Affiliation(s)
- Alexandra M. Huffman
- Department of Cell and Molecular Biology, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Mississippi Center of Excellence in Perinatal Research, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Women’s Health Research Center, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Samar Rezq
- Department of Cell and Molecular Biology, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Mississippi Center of Excellence in Perinatal Research, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Women’s Health Research Center, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Zagazig University, Zagazig, Egypt
| | - Jelina Basnet
- Department of Cell and Molecular Biology, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Mississippi Center of Excellence in Perinatal Research, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Women’s Health Research Center, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Damian G. Romero
- Department of Cell and Molecular Biology, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Mississippi Center of Excellence in Perinatal Research, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Women’s Health Research Center, Jackson, Mississippi, USA, University of Mississippi Medical Center, Jackson, Mississippi, USA
- Department of Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
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9
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Panda SP, Kesharwani A, Singh GD, Prasanth D, Vatchavai BR, Kumari PVK, Panda SK, Mallick SP. Impose of KNDy/GnRH neural circuit in PCOS, ageing, cancer and Alzheimer's disease: StAR actions in prevention of neuroendocrine dysfunction. Ageing Res Rev 2023; 92:102086. [PMID: 37821047 DOI: 10.1016/j.arr.2023.102086] [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: 08/22/2023] [Revised: 10/06/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023]
Abstract
The Kisspeptin1 (KISS1)/neurokinin B (NKB)/Dynorphin (Dyn) [KNDy] neurons in the hypothalamus regulate the reproduction stage in human beings and rodents. KNDy neurons co-expressed all KISS1, NKB, and Dyn peptides, and hence commonly regarded as KISS1 neurons. KNDy neurons contribute to the "GnRH pulse generator" and are implicated in the regulation of pulsatile GnRH release. The estradiol (E2)-estrogen receptor (ER) interactions over GnRH neurons in the hypothalamus cause nitric oxide (NO) discharge, in addition to presynaptic GABA and glutamate discharge from respective neurons. The released GABA and glutamate facilitate the activity of GnRH neurons via GABAA-R and AMPA/kainate-R. The KISS1 stimulates MAPK/ERK1/2 signaling and cause the release of Ca2+ from intracellular store, which contribute to neuroendocrine function, increase apoptosis and decrease cell proliferation and metastasis. The ageing in women deteriorates KISS1/KISS1R interaction in the hypothalamus which causes lower levels of GnRH. Because examining the human brain is so challenging, decades of clinical research have failed to find the causes of KNDy/GnRH dysfunction. The KISS1/KISS1R interactions in the brain have a neuroprotective effect against Alzheimer's disease (AD). These findings modulate the pathophysiological role of the KNDy/GnRH neural network in polycystic ovarian syndrome (PCOS) associated with ageing and, its protective role in cancer and AD. This review concludes with protecting effect of the steroid-derived acute regulatory enzyme (StAR) against neurotoxicity in the hippocampus, and hypothalamus, and these measures are fundamental for delaying ageing with PCOS. StAR could serve as novel diagnostic marker and therapeutic target for the most prevalent hormone-sensitive breast cancers (BCs).
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Affiliation(s)
- Siva Prasad Panda
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India.
| | - Adarsh Kesharwani
- Institute of Pharmaceutical Research, GLA University, Mathura, Uttar Pradesh, India
| | | | - Dsnbk Prasanth
- KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada, Andhrapradesh, India
| | - Bhaskara Raju Vatchavai
- Sri Vasavi Institute of Pharmaceutical Sciences, Pedatadepalli, Tadepalligudem, Andhrapradesh, India
| | - P V Kamala Kumari
- Vignan Institute of Pharmaceutical Technology, Duvvada, Visakhapatnam, Andhrapradesh, India
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Patel A, Dewani D, Jaiswal A, Yadav P, Reddy LS. Exploring Melatonin's Multifaceted Role in Polycystic Ovary Syndrome Management: A Comprehensive Review. Cureus 2023; 15:e48929. [PMID: 38106751 PMCID: PMC10725523 DOI: 10.7759/cureus.48929] [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: 10/27/2023] [Accepted: 11/07/2023] [Indexed: 12/19/2023] Open
Abstract
Polycystic Ovary Syndrome (PCOS) is a complex endocrine disorder affecting a significant portion of the female population, characterized by hormonal imbalances, oxidative stress, sleep disturbances, and mood disorders. This review explores the multifaceted role of melatonin, a hormone primarily known for regulating circadian rhythms, in PCOS management. Melatonin's potential impact on hormonal balance, oxidative stress, sleep quality, and mood is comprehensively examined. It has been shown to enhance insulin sensitivity, regulate sex hormones, and influence gonadotropins, offering promise in addressing the intricate hormonal imbalances common in PCOS. As a potent antioxidant and anti-inflammatory agent, melatonin mitigates oxidative stress and its associated complications. Its role in improving sleep quality and mood can significantly enhance the psychological well-being and daily functioning of PCOS patients. We discuss the potential implications of melatonin as a complementary or adjunct therapy, alongside existing PCOS treatments, and its significance in improving the overall quality of life for individuals with this syndrome. While further research is needed, melatonin's multifaceted effects promise a brighter future for PCOS patients.
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Affiliation(s)
- Archan Patel
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Deepika Dewani
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Arpita Jaiswal
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Pallavi Yadav
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
| | - Lucky Srivani Reddy
- Obstetrics and Gynaecology, Jawaharlal Nehru Medical College, Datta Meghe Institute of Higher Education and Research, Wardha, IND
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11
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Lissaman AC, Girling JE, Cree LM, Campbell RE, Ponnampalam AP. Androgen signalling in the ovaries and endometrium. Mol Hum Reprod 2023; 29:gaad017. [PMID: 37171897 PMCID: PMC10663053 DOI: 10.1093/molehr/gaad017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 04/27/2023] [Indexed: 05/14/2023] Open
Abstract
Currently, our understanding of hormonal regulation within the female reproductive system is largely based on our knowledge of estrogen and progesterone signalling. However, while the important functions of androgens in male physiology are well known, it is also recognized that androgens play critical roles in the female reproductive system. Further, androgen signalling is altered in a variety of gynaecological conditions, including endometriosis and polycystic ovary syndrome, indicative of regulatory roles in endometrial and ovarian function. Co-regulatory mechanisms exist between different androgens, estrogens, and progesterone, resulting in a complex network of steroid hormone interactions. Evidence from animal knockout studies, in vitro experiments, and human data indicate that androgen receptor expression is cell-specific and menstrual cycle stage-dependent, with important regulatory roles in the menstrual cycle, endometrial biology, and follicular development in the ovaries. This review will discuss the expression and co-regulatory interactions of androgen receptors, highlighting the complexity of the androgen signalling pathway in the endometrium and ovaries, and the synthesis of androgens from additional alternative pathways previously disregarded as male-specific. Moreover, it will illustrate the challenges faced when studying androgens in female biology, and the need for a more in-depth, integrative view of androgen metabolism and signalling in the female reproductive system.
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Affiliation(s)
- Abbey C Lissaman
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
| | - Jane E Girling
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Lynsey M Cree
- Department of Obstetrics and Gynaecology, University of Auckland, Auckland, New Zealand
| | - Rebecca E Campbell
- Department of Physiology and Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
| | - Anna P Ponnampalam
- Department of Physiology, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand
- Pūtahi Manawa-Healthy Hearts for Aotearoa New Zealand, Centre of Research Excellence, New Zealand
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12
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Sudhakaran G, Babu SR, Mahendra H, Arockiaraj J. Updated experimental cellular models to study polycystic ovarian syndrome. Life Sci 2023; 322:121672. [PMID: 37028548 DOI: 10.1016/j.lfs.2023.121672] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 03/27/2023] [Accepted: 04/03/2023] [Indexed: 04/08/2023]
Abstract
Polycystic ovarian syndrome (PCOS) develops due to hormonal imbalance and hyperandrogenism. Animal models are widely used to study PCOS because they mimic essential characteristics of human PCOS; however, the pathogenesis of PCOS remains unclear. Different sources of novel drugs are currently being screened as therapeutic strategies to alleviate PCOS and its symptoms. Simplified cell line in-vitro models could be preliminarily used to screen the bioactivity of various drugs. This review describes different cell line models focusing on the PCOS condition and its complications. Therefore, the bioactivity of the drugs could be preliminarily screened in a cell line model before moving to higher animal models.
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Affiliation(s)
- Gokul Sudhakaran
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Sarvesh Ramesh Babu
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Hridai Mahendra
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India
| | - Jesu Arockiaraj
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Kattankulathur, 603 203 Chennai, Tamil Nadu, India.
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13
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Forghani N, Karimi Z, Mokhtari M, Shariati M, Masjedi F. Association of Oxidative Stress with Kidney Injury in a Hyperandrogenemic Female Rat Model. IRANIAN JOURNAL OF MEDICAL SCIENCES 2023; 48:187-197. [PMID: 36895462 PMCID: PMC9989239 DOI: 10.30476/ijms.2022.93594.2497] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 03/03/2022] [Accepted: 04/10/2022] [Indexed: 03/11/2023]
Abstract
Background Polycystic ovary syndrome (PCOS) is the most common reproductive dysfunction in premenopausal women. PCOS is associated with oxidative stress (OS), which is the main risk factor for renal diseases. This study aimed to investigate the mechanisms responsible for renal injury in a hyperandrogenemic female rat model. Methods This study was conducted from December 2019 to September 2021 at Shiraz Nephro-Urology Research Centre, Shiraz University of Medical Sciences (Shiraz, Iran). Thirty female Sprague-Dawley rats were randomly divided into three groups (n=10), namely control, sham, and dehydroepiandrosterone (DHEA). Plasma total testosterone, plasma creatinine (Cr), and blood urea nitrogen (BUN) levels were measured. In addition, total oxidant status (TOS), total antioxidant capacity (TAC), oxidative stress index (OSI), and histopathological changes in the ovaries and kidneys were determined. Data were analyzed using the GraphPad Prism software, and P<0.05 was considered statistically significant. Results Plasma total testosterone levels increased by nine-fold in DHEA-treated rats compared to controls (P=0.0001). Administration of DHEA increased Cr and BUN levels and caused severe renal tubular cell injury. In addition, plasma and tissue (kidney and ovary) TAC levels decreased significantly, but TOS levels and OSI values were significantly increased (P=0.019). Significant damage to both glomerular and tubular parts of the kidney and ovarian follicular structure was observed in the DHEA group. Conclusion Hyperandrogenemia caused systemic abnormalities through OS-related mechanisms and damaged renal and ovarian tissues. DHEA treatment in rat models is recommended to study the mechanisms that mediate PCOS-associated renal injury.
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Affiliation(s)
- Nima Forghani
- Department of Biology, School of Sciences, Islamic Azad University, Kazerun Branch, Kazerun, Iran
| | - Zeinab Karimi
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mokhtar Mokhtari
- Department of Biology, School of Sciences, Islamic Azad University, Kazerun Branch, Kazerun, Iran
| | - Mehrdad Shariati
- Department of Biology, School of Sciences, Islamic Azad University, Kazerun Branch, Kazerun, Iran
| | - Fatemeh Masjedi
- Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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14
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Khant Aung Z, Masih RR, Desroziers E, Campbell RE, Brown RSE. Enhanced pup retrieval behaviour in a mouse model of polycystic ovary syndrome. J Neuroendocrinol 2022; 34:e13206. [PMID: 36416198 PMCID: PMC10077988 DOI: 10.1111/jne.13206] [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: 05/12/2022] [Revised: 08/23/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022]
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrinopathy to affect women of reproductive-age world-wide. Hyperandrogenism is both a hallmark feature of PCOS, and is hypothesised to be an underlying mechanism driving the development of the condition in utero. With circulating hormones known to profoundly influence maternal responses in females, we aimed to determine whether maternal behaviour is altered in a well-described prenatally androgenised (PNA) mouse model of PCOS. Mouse dams were administered with dihydrotestosterone or vehicle on days 16, 17 and 18 of pregnancy. Maternal responses were assessed in both the dihydrotestosterone-injected dams following parturition and in their adult female PNA offspring. Exposure of dams to excess androgens during late pregnancy had no detrimental effects on pregnancy outcomes, including gestation length, pup survival and gestational weight gain, or on subsequent maternal behaviour following parturition. By contrast, PNA virgin females, modelling PCOS, exhibited enhanced maternal behaviour when tested in an anxiogenic novel cage environment, with females rapidly retrieving pups and nesting with them. In comparison, most control virgin females failed to complete this retrieval task in the anxiogenic environment. Assessment of progesterone receptor and oestrogen receptor α immunoreactivity in the brains of virgin PNA and control females revealed increased numbers of oestrogen receptor α positive cells in the brains of PNA females in regions well known to be important for maternal behaviour. This suggests that increased oestrogenic signalling in the neural circuit that underlies maternal behaviour may be a possible mechanism by which maternal behaviour is enhanced in PNA female mice.
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Affiliation(s)
- Zin Khant Aung
- Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Department of Anatomy, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Renee R Masih
- Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Elodie Desroziers
- Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
- Sorbonne Université - Faculté de Sciences et Ingénierie, Neuroplasticité des Comportements de la Reproduction, Neurosciences Paris Seine, UM119 - CNRS UMR 8246 - INSERM UMRS 1130, Paris, France
| | - Rebecca E Campbell
- Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
| | - Rosemary S E Brown
- Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
- Department of Physiology, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand
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15
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Siddiqui S, Mateen S, Ahmad R, Moin S. A brief insight into the etiology, genetics, and immunology of polycystic ovarian syndrome (PCOS). J Assist Reprod Genet 2022; 39:2439-2473. [PMID: 36190593 PMCID: PMC9723082 DOI: 10.1007/s10815-022-02625-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/19/2022] [Indexed: 10/10/2022] Open
Abstract
Polycystic ovarian syndrome (PCOS) is a prevailing endocrine and metabolic disorder occurring in about 6-20% of females in reproductive age. Most symptoms of PCOS arise early during puberty. Since PCOS involves a combination of signs and symptoms, thus it is considered as a heterogeneous disorderliness. The most accepted diagnostic criteria is Rotterdam criteria which involves two of the latter three features: (a) hyperandrogenism, (b) oligo- or an-ovulation, and (c) polycystic ovaries. The persistent hormonal imbalance leads to multiple small antral follicles formation and irregular menstrual cycle, ultimately causing infertility among females. Insulin resistance, cardiovascular diseases, abdominal obesity, psychological disorders, infertility, and cancer are also related to PCOS. These pathophysiologies associated with PCOS are interrelated with each other. Hyperandrogenism causes insulin resistance and hyperglycemia, leading to ROS formation, oxidative stress, and abdominal adiposity. In consequence, inflammation, ROS production, insulin resistance, and hyperandrogenemia also increase. Elevation of AGEs in the body either produced endogenously or consumed from diet exaggerates PCOS symptoms and is also related to ovarian dysfunction. This review summarizes how AGE formation, inflammation, and oxidative stress are significantly essential in PCOS progression. Alterations during prenatal development like exposure to excess AMH, androgens, or toxins (bisphenol-A, endocrine disruptors, etc.) may also be the etiologic mechanism behind PCOS. Although the etiology of this disorder is unclear, environmental and genetic factors are primarily involved. Physical inactivity, as well as unhealthy eating habits, has a vital role in the progression of PCOS. This review outlines a collection of specific genes phenotypically linked with PCOS. Furthermore, beneficial effect of metformin in maintaining endocrine abnormalities and ovarian function is also mentioned. Kisspeptin is a protein which helps in onset of puberty and increases GnRH pulsatile release during ovulation as well as role of KNDy neurons in GnRH pulsatile signal required for reproduction are also elaborated. This review also focuses on the immunology related to PCOS involving chronic low-grade inflammation, and how the alterations within the follicular microenvironment are intricated in the development of infertility in PCOS patients. How PCOS develops following antiepileptic and psychiatric medication is also expanded in this review. Initiation of antiandrogen treatment in early age (≤ 25 years) might be helpful in spontaneous conception in PCOS women. The role of BMP (bone morphogenetic proteins) in folliculogenesis and their expression in oocytes and granulosa cells are also explained. GDF8 and SERPINE1 expression in PCOS is given in detail.
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Affiliation(s)
- Sana Siddiqui
- Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar, Pradesh -202002, India
| | - Somaiya Mateen
- Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar, Pradesh -202002, India
| | - Rizwan Ahmad
- Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar, Pradesh -202002, India
| | - Shagufta Moin
- Department of Biochemistry, Faculty of Medicine, Jawaharlal Nehru Medical College, Aligarh Muslim University, Aligarh, Uttar, Pradesh -202002, India.
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16
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Emanuel RHK, Roberts J, Docherty PD, Lunt H, Campbell RE, Möller K. A review of the hormones involved in the endocrine dysfunctions of polycystic ovary syndrome and their interactions. Front Endocrinol (Lausanne) 2022; 13:1017468. [PMID: 36457554 PMCID: PMC9705998 DOI: 10.3389/fendo.2022.1017468] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 10/27/2022] [Indexed: 11/16/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) affects up to 20% of women but remains poorly understood. It is a heterogeneous condition with many potential comorbidities. This review offers an overview of the dysregulation of the reproductive and metabolic systems associated with PCOS. Review of the literature informed the development of a comprehensive summarizing 'wiring' diagram of PCOS-related features. This review provides a justification for each diagram aspect from the relevant academic literature, and explores the interactions between the hypothalamus, ovarian follicles, adipose tissue, reproductive hormones and other organ systems. The diagram will provide an efficient and useful tool for those researching and treating PCOS to understand the current state of knowledge on the complexity and variability of PCOS.
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Affiliation(s)
- Rebecca H. K. Emanuel
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Josh Roberts
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
| | - Paul D. Docherty
- Department of Mechanical Engineering, University of Canterbury, Christchurch, New Zealand
- Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
- *Correspondence: Paul D. Docherty,
| | - Helen Lunt
- Diabetes Services, Te Whatu Ora Waitaha Canterbury, Canterbury, New Zealand
- Department of Medicine, University of Otago, Christchurch, New Zealand
| | - Rebecca E. Campbell
- School of Biomedical Sciences, Department of Physiology, Centre for Neuroendocrinology, University of Otago, Dunedin, New Zealand
| | - Knut Möller
- Institute of Technical Medicine, Furtwangen University, Villingen-Schwenningen, Germany
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17
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Jamieson BB, Moore AM, Lohr DB, Thomas SX, Coolen LM, Lehman MN, Campbell RE, Piet R. Prenatal androgen treatment impairs the suprachiasmatic nucleus arginine-vasopressin to kisspeptin neuron circuit in female mice. Front Endocrinol (Lausanne) 2022; 13:951344. [PMID: 35992143 PMCID: PMC9388912 DOI: 10.3389/fendo.2022.951344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 07/06/2022] [Indexed: 01/13/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is associated with elevated androgen and luteinizing hormone (LH) secretion and with oligo/anovulation. Evidence indicates that elevated androgens impair sex steroid hormone feedback regulation of pulsatile LH secretion. Hyperandrogenemia in PCOS may also disrupt the preovulatory LH surge. The mechanisms through which this might occur, however, are not fully understood. Kisspeptin (KISS1) neurons of the rostral periventricular area of the third ventricle (RP3V) convey hormonal cues to gonadotropin-releasing hormone (GnRH) neurons. In rodents, the preovulatory surge is triggered by these hormonal cues and coincident timing signals from the central circadian clock in the suprachiasmatic nucleus (SCN). Timing signals are relayed to GnRH neurons, in part, via projections from SCN arginine-vasopressin (AVP) neurons to RP3VKISS1 neurons. Because rodent SCN cells express androgen receptors (AR), we hypothesized that these circuits are impaired by elevated androgens in a mouse model of PCOS. In prenatally androgen-treated (PNA) female mice, SCN Ar expression was significantly increased compared to that found in prenatally vehicle-treated mice. A similar trend was seen in the number of Avp-positive SCN cells expressing Ar. In the RP3V, the number of kisspeptin neurons was preserved. Anterograde tract-tracing, however, revealed reduced SCNAVP neuron projections to the RP3V and a significantly lower proportion of RP3VKISS1 neurons with close appositions from SCNAVP fibers. Functional assessments showed, on the other hand, that RP3VKISS1 neuron responses to AVP were maintained in PNA mice. These findings indicate that PNA changes some of the neural circuits that regulate the preovulatory surge. These impairments might contribute to ovulatory dysfunction in PNA mice modeling PCOS.
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Affiliation(s)
- Bradley B. Jamieson
- Centre for Neuroendocrinology and Department of Physiology, University of Otago, Dunedin, New Zealand
| | - Aleisha M. Moore
- Brain Health Research Institute and Department of Biological Sciences, Kent State University, Kent, OH, United States
| | - Dayanara B. Lohr
- Brain Health Research Institute and Department of Biological Sciences, Kent State University, Kent, OH, United States
| | - Simone X. Thomas
- Centre for Neuroendocrinology and Department of Physiology, University of Otago, Dunedin, New Zealand
| | - Lique M. Coolen
- Brain Health Research Institute and Department of Biological Sciences, Kent State University, Kent, OH, United States
| | - Michael N. Lehman
- Brain Health Research Institute and Department of Biological Sciences, Kent State University, Kent, OH, United States
| | - Rebecca E. Campbell
- Centre for Neuroendocrinology and Department of Physiology, University of Otago, Dunedin, New Zealand
| | - Richard Piet
- Centre for Neuroendocrinology and Department of Physiology, University of Otago, Dunedin, New Zealand
- Brain Health Research Institute and Department of Biological Sciences, Kent State University, Kent, OH, United States
- *Correspondence: Richard Piet,
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