1
|
Alam M, Mustari A, Miah MA, Sujan KM, Chowdhury EH. Effects of varying doses of conjugated estrogen on body weight, hormonal and histological alterations of reproductive organs in adult swiss albino female mice. Heliyon 2023; 9:e15112. [PMID: 37095990 PMCID: PMC10121826 DOI: 10.1016/j.heliyon.2023.e15112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 03/18/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Estrogens are a group of hormones that have diverse effects on both reproductive and non-reproductive organs. Conjugated estrogens are medicine that contains a mixture of estrogen hormones. The study was conducted to observe the effects of varying doses of conjugated estrogen on body weight, hormonal and histological alterations of reproductive organs in adult swiss albino female mice. In this study, 60 female swiss albino mice (Mus musculus) aged 28-30 days with an average body weight of 28.2 ± 1 g were used. At first, the mice were randomly divided into 4 groups each containing 15 mice. Group A was served as vehicle control and fed on standard mice pellet and fresh drinking water. While, groups B, C and D were administered with conjugated estrogen orally at the daily dose rate of 125 μg, 250 μg and 500 μg/kg body weight respectively with 1 mL sesame oil as a vehicle by mixing with feed. The experiment was carried out for 90 days. After humanly euthanized, blood was collected and serum was prepared and organs were collected for histopathology. The results revealed that higher doses of conjugated estrogen resulted in weight loss in premenopausal female mice compared to lower doses. Serum estrogen and thyroxine concentration was increased significantly following the doses of conjugated estrogen. Ovarian histotexture showed congested blood vessels and cystic space with degeneration of follicles and corpus luteum. Uterine lesions included massive macrophage infiltration in endometrium and hyperplasia of glandular epithelium at a lower dose; hyperplasia and hypertrophy of glandular epithelium (pleomorphism) with normal macrophage infiltration in endometrium at a higher dose. Therefore, it can be concluded that oral conjugated estrogen therapy at high dose has more detrimental impacts on body weight and reproductive function compared to lower dose in female adult mice.
Collapse
|
2
|
Giordano LA, Giordano MV, Célia Teixeira Gomes R, Dos Santos Simões R, Baracat MCP, Giordano MG, Ferreira-Filho ES, de Medeiros SF, Baracat EC, Soares-Júnior JM. Effects of clinical and metabolic variables and hormones on the expression of immune protein biomarkers in the endometrium of women with polycystic ovary syndrome and normal-cycling controls. Gynecol Endocrinol 2022; 38:508-515. [PMID: 35393909 DOI: 10.1080/09513590.2022.2061454] [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: 10/18/2022] Open
Abstract
BACKGROUND Women with polycystic ovary syndrome (PCOS) are at an elevated risk of endometrial cancer, which may be associated with the continuous proliferative state caused by the interaction between hormones and metabolic factors. OBJECTIVE To investigate the impact of hormones and metabolic factors in the proliferation and death of endometrium during the proliferative phase. METHODS Cross-sectional study with 11 women with PCOS and eight normal-cycling non-PCOS controls at the Federal University of the State of Rio de Janeiro from February 2011 to June 2019. Clinical, biochemical, and hormonal data were collected to analyze their influence on the expression of biomarkers related to the endometrial tissue breakdown. Hysteroscopy and endometrial biopsies were conducted, and the endometrial samples underwent immunohistochemistry for markers of apoptosis B-cell lymphoma 2 (BCL2), cleaved caspase-3 (CASP3), fas cell surface death receptor (FAS), FAS ligand (FASLG), BCL2 associated X (BAX), marker of proliferation Ki-67 (MKI67), and cell death using terminal deoxynucleotidyl transferase dUTP nick and labeling (TUNEL). RESULTS CASP3 and TUNEL expressions were lower in both stroma and endometrium gland of PCOS women than in controls. MKI67 and homeostasis indexes (BCL2/BAX; FASLG/FAS) in the endometrium of the PCOS group were significantly higher. Body mass index (BMI) values were positively correlated with the expression of MKI67 and MKI67/TUNEL ratio in the endometrial stroma compartment. Fasting insulin levels were positively correlated with the expression of BCL2, and DHEA-S levels were negatively correlated with the expression of CASP3 of women with PCOS. CONCLUSION BMI, insulin, and DHEA-S influence the endometrial homeostasis breakdown in PCOS in the endometrium stroma.
Collapse
Affiliation(s)
- Luiz Augusto Giordano
- Gynecology Department, Universidade Federal de São Paulo - UNIFESP, Sao Paulo, Brazil
- Gynecology Department, Universidade Federal do Estado do Rio de Janeiro - (UNIRIO), Rio de Janeiro, Brazil
| | - Mario Vicente Giordano
- Gynecology Department, Universidade Federal do Estado do Rio de Janeiro - (UNIRIO), Rio de Janeiro, Brazil
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Regina Célia Teixeira Gomes
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Ricardo Dos Santos Simões
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Maria Candida Pinheiro Baracat
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Mario Gáspare Giordano
- Gynecology Department, Universidade Federal do Estado do Rio de Janeiro - (UNIRIO), Rio de Janeiro, Brazil
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Edson Santos Ferreira-Filho
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - Sebastião Freitas de Medeiros
- Department of Gynecology and Obstetrics, Medical School, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil
| | - Edmund Chada Baracat
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| | - José Maria Soares-Júnior
- Disciplina de Ginecologia do Departamento de Obstetrícia e Ginecologia, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, Sao Paulo, Brazil
| |
Collapse
|
3
|
Oróstica ML, Astorga I, Plaza-Parrochia F, Poblete C, Carvajal R, García V, Romero C, Vega M. Metformin Treatment Regulates the Expression of Molecules Involved in Adiponectin and Insulin Signaling Pathways in Endometria from Women with Obesity-Associated Insulin Resistance and PCOS. Int J Mol Sci 2022; 23:3922. [PMID: 35409282 PMCID: PMC8999908 DOI: 10.3390/ijms23073922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/21/2022] [Accepted: 03/21/2022] [Indexed: 02/06/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is an endocrine/metabolic disorder associated with insulin resistance (IR) and obesity. Endometria from women with PCOS present failures in insulin action, glucose uptake and signaling of insulin-sensitizing molecules, such as adiponectin, with consequences for reproduction. Metformin (MTF) treatment improves insulin signaling in endometrial tissues, but its mechanism is not fully understood. This study addresses the MTF effect, as well as adiponectin agonist action, on levels of molecules associated with insulin and adiponectin signaling pathways in endometrial tissue and cells, as assessed by immunohistochemistry and immunocytochemistry, respectively. Endometrial tissues were obtained from women and divided into five groups: Normal Weight (control); Obesity + IR; Obesity + IR + PCOS; Obesity + IR + MTF; Obesity + IR + PCOS + MTF. Endometrial cells stimulated with TNFα (as obesity-marker) were also used to partially emulate an obesity environment. The results showed low levels of insulin/adiponectin signaling in the endometria from women with obesity, IR and PCOS compared with the control group. MTF re-established these levels, independently of PCOS. TNFα-associated molecules were elevated in pathologic endometria, whereas MTF diminished these levels. The low levels of insulin/adiponectin molecules in endometrial cells treated with TNFα were reverted by MTF, similar to what was observed in the case of the adiponectin agonist. Therefore, independently of PCOS, MTF can re-establish levels of molecules involved in insulin/adiponectin signaling in endometrial cells, suggesting an improvement in insulin action and reproductive failures observed in endometria from women with obesity/PCOS.
Collapse
Affiliation(s)
- Maria Lorena Oróstica
- Laboratorio de Fisiopatología Celular y Cáncer (FICEC), Centro de Investigación Biomédica (CIB), Facultad de Medicina, Universidad Diego Portales, Santiago 8370007, Chile
- Laboratorio de Comunicaciones Celulares, Programa de Biología Celular y Molecular, Centro de Estudios en Ejercicio, Metabolismo y Cáncer (CEMC), Facultad de Medicina, Universidad de Chile, Santiago 8380453, Chile
| | - Isis Astorga
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
| | - Francisca Plaza-Parrochia
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
| | - Cristian Poblete
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
| | - Rodrigo Carvajal
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
| | - Víctor García
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
| | - Carmen Romero
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
- Department of Obstetrics and Gynecology, School of Medicine, Clinical Hospital, University of Chile, Santiago 8380456, Chile
| | - Margarita Vega
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Santos Dumont #999, Santiago 8380456, Chile; (I.A.); (F.P.-P.); (C.P.); (R.C.); (V.G.); (C.R.)
- Department of Obstetrics and Gynecology, School of Medicine, Clinical Hospital, University of Chile, Santiago 8380456, Chile
| |
Collapse
|
4
|
Pathare ADS, Hinduja I, Mahadik RC. Basic aspects of endometrial receptivity in PCOS patients. Mol Biol Rep 2022; 49:1519-1528. [PMID: 34988892 DOI: 10.1007/s11033-021-06976-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Accepted: 11/17/2021] [Indexed: 12/12/2022]
Abstract
Polycystic Ovarian Syndrome (PCOS) is an endocrine disorder commonly affecting the reproductive capacity of women leading to infertility. PCOS-related infertility is majorly due to anovulation; however, it is not the only cause. The defective endometrium causing recurrent miscarriage and implantation failure can also be accountable for infertility in PCOS women. The unusual levels of hormones and their receptors in the PCOS endometrium have a hostile effect during WOI, making the microenvironment unfavorable for embryo implantation. To date, many studies have been performed to determine the role of candidate genes in endometrial receptivity but very limited data is available using whole genome approach. This review aims at summarizing the existing studies on the basic aspects of endometrial receptivity in PCOS. The review focuses on aberrant levels of hormones and their receptors in the endometrium, affecting the receptivity. Additionally, it explores the novel approach reviewing the effect on treatment options administered for ovulation induction in PCOS on their endometrial receptivity. Overall, this review will help us to understand the molecular milieu in PCOS endometrium and its effect on the receptivity potential. However, to have a thorough understanding of the mechanistic approach of hormonal imbalance in PCOS on endometrial receptivity, there is a need to give more weightage to genome-wide studies in the future. The current review will further guide us to formulate future studies using whole genome technologies for the assessment of endometrial receptivity in different cohorts of PCOS women, which may have future diagnostic implementations.
Collapse
Affiliation(s)
- Amruta D S Pathare
- Department of IVF and Research, P. D. Hinduja Hospital and Medical Research Centre, Mumbai, 400016, India
| | - Indira Hinduja
- Department of IVF and Research, P. D. Hinduja Hospital and Medical Research Centre, Mumbai, 400016, India.
| | - Roshani C Mahadik
- Department of IVF and Research, P. D. Hinduja Hospital and Medical Research Centre, Mumbai, 400016, India
| |
Collapse
|
5
|
Hansda SR, Haldar C. Uterine anomalies in cell proliferation, energy homeostasis and oxidative stress in PCOS hamsters, M. auratus: Therapeutic potentials of melatonin. Life Sci 2021; 281:119755. [PMID: 34175318 DOI: 10.1016/j.lfs.2021.119755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/07/2021] [Accepted: 06/17/2021] [Indexed: 12/22/2022]
Abstract
AIMS Polycystic ovarian syndrome (PCOS) is a reproductive, endocrine and metabolic disorder. Less is known about the mechanism of its effect on uterine function and therapeutic potential of melatonin. Our aim was to evaluate uterine dysfunction(s) in letrozole induced PCOS and its possible rectification by melatonin. MAIN METHODS Adult female golden hamsters were divided into groups of Control (C), Melatonin (M; 1 mg/kg b.w.), Letrozole (L; 3 mg/kg b.w.) and combination of Letrozole+Melatonin (L + M; 3 mg/kg b.w. + 1 mg/kg b.w.) which were treated for 40 days. Analysis of serum testosterone/estradiol/progesterone/leptin/insulin, uterine histomorphometry, immunohistochemistry for proliferation cell nuclear antigen (PCNA), homeostatic assessment model of insulin resistance (HOMA-IR), western blotting for PCNA, androgen receptor (AR), insulin receptor (InsR), glucose tansporter-4 (GLUT-4), nuclear factor-kappa B (NFκB), cyclooxygenase-2 (COX-2) and biochemical analysis of superoxide dismutase (SOD)/catalase/lipid peroxidation (LPO) were done. KEY FINDINGS Serum testosterone, leptin and insulin increased while uterine InsR/GLUT-4 expression decreased in L group indicating metabolic abnormalities. Endometrial hyperplasia, increased expression of PCNA and AR indicated abnormal proliferation in L compared to C. Increased uterine oxidative load (SOD/catalase/LPO) and inflammatory markers NFκB/COX-2 expression in L was responsible for high tissue oxidative stress and inflammation. M administration normalized all the above parameters suggesting its ameliorative effect in L + M group. SIGNIFICANCE We report PCOS induced uterine dysfunction in Mesocricetus auratus for the first time. M administration restores uterine functions modulating cellular dynamicity, metabolic status, decreased oxidative and inflammatory load in PCOS hamsters. Therefore, we suggest the therapeutic potential of M against PCOS led uterine abnormalities to restore female fertility.
Collapse
Affiliation(s)
- Shruti R Hansda
- Pineal Research Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India.
| | - Chandana Haldar
- Pineal Research Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India.
| |
Collapse
|
6
|
Ibrahim MAA, Sadek MT, Sharaf Eldin HEM. Role of pomegranate extract in restoring endometrial androgen receptor expression, proliferation, and pinopodes in a rat model of polycystic ovary syndrome. Morphologie 2021; 106:145-154. [PMID: 34023214 DOI: 10.1016/j.morpho.2021.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS) is a multifactorial hormonal disorder accompanied by impairment of endometrial function and structure. Pomegranate is recognized for its role in normalizing the female sex hormones in PCOS with little known about its effect on the accompanying endometrial histological alterations. AIM OF THE WORK To assess the possible ameliorative role of pomegranate juice extract (PJE) on endometrial injury in a rat model of PCOS. MATERIAL AND METHODS Forty adult albino rats were equally divided into 4 groups; control, PJE-treated (400mg/kg/day for 3 weeks), letrozole-treated (PCOS) (1mg/kg/day for 3 weeks), and PJE & PCOS groups. Serum Follicle-stimulating hormone (FSH), Luteinizing hormone (LH), testosterone, estradiol, and tissue malondialdehyde (MDA) were assayed. Uterine samples were processed for histological staining with hematoxylin & eosin and Masson's trichrome stains, Ki67 and androgen receptor immunohistochemical staining, and scanning electron microscopy. RESULTS PCOS group revealed a significant increase in serum FSH, LH, testosterone, estradiol, and tissue MDA. Uterine sections depicted various histological alterations in the endometrium with signs of inflammation. A significant increase in the endometrial collagen fiber content, as well as a significant upregulation in Ki67 and androgen receptor immunohistochemical expression were detected. Scanning electron microscopy showed a significant decrease in the mean number of pinopodes. Concomitant administration of PJE efficiently restored the studied biochemical, histological, and immunohistochemical parameters. CONCLUSION PJE ameliorated PCOS accompanying endometrial histological alterations through its antioxidant, anti-inflammatory, anti-fibrotic, anti-proliferative, and anti-androgenic effects most probably due to its polyphenols content.
Collapse
Affiliation(s)
- M A A Ibrahim
- Histology and Cell Biology department, Faculty of Medicine, Tanta University, 31527 Tanta, Egypt.
| | - M T Sadek
- Histology and Cell Biology department, Faculty of Medicine, Tanta University, 31527 Tanta, Egypt
| | - H E M Sharaf Eldin
- Histology and Cell Biology department, Faculty of Medicine, Tanta University, 31527 Tanta, Egypt
| |
Collapse
|
7
|
Xu XL, Deng SL, Lian ZX, Yu K. Estrogen Receptors in Polycystic Ovary Syndrome. Cells 2021; 10:cells10020459. [PMID: 33669960 PMCID: PMC7924872 DOI: 10.3390/cells10020459] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/17/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
Female infertility is mainly caused by ovulation disorders, which affect female reproduction and pregnancy worldwide, with polycystic ovary syndrome (PCOS) being the most prevalent of these. PCOS is a frequent endocrine disease that is associated with abnormal function of the female sex hormone estrogen and estrogen receptors (ERs). Estrogens mediate genomic effects through ERα and ERβ in target tissues. The G-protein-coupled estrogen receptor (GPER) has recently been described as mediating the non-genomic signaling of estrogen. Changes in estrogen receptor signaling pathways affect cellular activities, such as ovulation; cell cycle phase; and cell proliferation, migration, and invasion. Over the years, some selective estrogen receptor modulators (SERMs) have made substantial strides in clinical applications for subfertility with PCOS, such as tamoxifen and clomiphene, however the role of ER in PCOS still needs to be understood. This article focuses on the recent progress in PCOS caused by the abnormal expression of estrogen and ERs in the ovaries and uterus, and the clinical application of related targeted small-molecule drugs.
Collapse
Affiliation(s)
- Xue-Ling Xu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Shou-Long Deng
- Institute of Laboratory Animal Sciences, Chinese Academy of Medical Sciences, Ministry of Health, Beijing 100021, China;
- CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100101, China
| | - Zheng-Xing Lian
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
- Correspondence: (Z.-X.L.); (K.Y.)
| | - Kun Yu
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
- Correspondence: (Z.-X.L.); (K.Y.)
| |
Collapse
|
8
|
Kwon CY, Cho IH, Park KS. Therapeutic Effects and Mechanisms of Herbal Medicines for Treating Polycystic Ovary Syndrome: A Review. Front Pharmacol 2020; 11:1192. [PMID: 32903374 PMCID: PMC7434855 DOI: 10.3389/fphar.2020.01192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 07/22/2020] [Indexed: 12/19/2022] Open
Abstract
Background Polycystic ovary syndrome (PCOS) is one of the most common disorders of endocrinology in reproductive-age women. In this study, we reviewed data on the effects and underlying mechanisms of herbal medicines used in the treatment of PCOS in laboratory studies. Methods Articles published in English up to June 30, 2018 were searched in Medline and EMBASE. We extracted data regarding herbal intervention; target cell (or animal model) usage; method of herbal extraction; route of administration; dosage and periods; and outcomes of the compounds isolated from herbs, individual herbal extracts, and herbal formula decoctions. We summarized the actions and the mechanisms underlying the beneficial effects of herbal medicines on PCOS. Results A total of 27 studies involving 22 herbal medicines reported their efficacy on PCOS. The herbal interventions in the 27 studies comprised four compounds isolated from herbs (6 studies), nine individual herbal extracts (11 studies), and nine herbal formula decoctions (10 studies). Herbal medicines normalized female hormones, diminished male hormones, recovered the estrous cycle, ameliorated insulin resistance, and improved lipid metabolism in PCOS. The mechanisms underlying the beneficial effects of herbal medicines on PCOS were found to be associated with anti-inflammation, anti-oxidative stress, inhibition of autophagy and/or apoptosis, and ovarian nerve growth factor reduction. Conclusions Herbal medicines are thought to be promising resources in the development of effective therapeutic agents for PCOS. Further studies that include methodological quality assessment and quantitative synthesis of outcomes are recommended.
Collapse
Affiliation(s)
- Chan-Young Kwon
- Department of Oriental Neuropsychiatry, Dong-eui University College of Korean Medicine, Busan, South Korea
| | - Ik-Hyun Cho
- Department of Convergence Medical Science, Brain Korea 21 Plus Program, and Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Kyoung Sun Park
- Jaseng Hospital of Korean Medicine, Seoul, South Korea.,Jaseng Spine and Joint Research Institute, Jaseng Medical Foundation, Seoul, South Korea
| |
Collapse
|
9
|
Oróstica L, Poblete C, Romero C, Vega M. Pro-Inflammatory Markers Negatively Regulate IRS1 in Endometrial Cells and Endometrium from Women with Obesity and PCOS. Reprod Sci 2020; 27:290-300. [PMID: 32046436 DOI: 10.1007/s43032-019-00026-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 03/31/2019] [Indexed: 02/03/2023]
Abstract
A pro-inflammatory environment is characteristic of obesity and polycystic ovary syndrome (PCOS). This environment through cytokines secretion negatively affects insulin action. Endometria from women with both conditions (obesity and PCOS) present high TNF-α level and altered insulin signaling. In addition, these patients present reproductive failures that could be associated to an abnormal endometrial function. Here, TNF-α and IL-6 effects on insulin signaling pathway were evaluated. Serum and endometrial IL-6, phospho-IRS1-S270 (inactive form) and phospho-IRS1-Y612 (active form) levels were evaluated in women with: Normal-Weight, Obesity and Obesity-PCOS. In endometrial cells under hyperandrogenic/hyperinsulinic conditions resembling PCOS, it was evaluated IL-6/TNF-α effects on phospho-IRS1-S270, phospho-IRS1-Y612, phospho-AKT-S473 levels, and S6K and JNK activation (IRS1-inactivating molecules). In obesity groups, diminution of IRS1-active form was observed, being more significantly in Obesity-PCOS; whereas, IRS1-inactive form increased in Obesity-PCOS. Serum and endometrial IL-6 were higher in Obesity-groups compared to Normal-Weight. In endometrial cells, TNF-α increases phospho-IRS1-S270, while IL-6 decreases phospho-IRS1-Y612. Importantly, TNF-α and IL-6 promote S6K and JNK activation; TNF-α increases and IL-6 decreases phospho-AKT-S473 levels. Thus, pro-inflammatory cytokines in endometrium could negatively influence insulin signaling by different mechanisms: TNF-α promotes activation of IRS1-inactivating kinases, whereas, IL-6 decreases IRS1 and AKT activation. Moreover, when obesity and PCOS are present the disruption of insulin signaling is aggravated. These effects could explain endometrial abnormal function and reproductive failures observed in women with obesity and PCOS.
Collapse
Affiliation(s)
- Lorena Oróstica
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile. .,Centro de Investigación Biomédica, Facultad de Medicina, Universidad Diego Portales, Av. Ejercito Libertador # 141, 8370007, Santiago, Chile.
| | - Cristian Poblete
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile
| | - Carmen Romero
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile.,Department of Obstetrics and Gynecology, Clinical Hospital, Faculty of Medicine, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile
| | - Margarita Vega
- Laboratory of Endocrinology and Reproductive Biology, Clinical Hospital, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile. .,Department of Obstetrics and Gynecology, Clinical Hospital, Faculty of Medicine, University of Chile, Av. Santos Dumont #999, Independencia, 8380456, Santiago, Chile.
| |
Collapse
|
10
|
Hu M, Zhang Y, Egecioglu E, Li X, Shao LR, Billig H. Uterine glycolytic enzyme expression is affected by knockout of different estrogen receptor subtypes. Biomed Rep 2019; 11:135-144. [PMID: 31565219 PMCID: PMC6759582 DOI: 10.3892/br.2019.1234] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/01/2019] [Indexed: 12/11/2022] Open
Abstract
The estrogen signaling pathway via nuclear estrogen receptors (ER) α and β is considered to be the master regulator of the cellular glucose metabolism in the uterus. While in vivo animal studies have demonstrated that 17β-estradiol (E2) treatment increases the expression levels and activities of several glycolytic enzymes in the uterus, the specific ER subtype-dependent regulation of key glycolytic enzymes in the uterus has not been experimentally verified. In this study, the localization of ERα and ERβ in human and mouse endometria were evaluated using immunohistology. Given that ERα and ERβ are not functionally equivalent, ERα, ERβ and ERαβ knockout (ERα-/-, ERβ-/- and ERαβ-/-) mice were utilized to determine the expression pattern of glycolytic enzymes in the uterus. It was found that the level of ERα was higher than that of ERβ in the human and mouse endometrial epithelial and stromal cells, and both receptors were downregulated by E2 treatment in the mouse uterus. The expression of the hexokinase 1 and GAPDH was increased in ERα-/- and ERβ-/- mice compared with wild-type controls. Increased phosphofructokinase expression was observed in ERα-/- and ERαβ-/- mice, whereas increased pyruvate kinase isozyme M2 and pyruvate dehydrogenase expression was observed in ERβ-/- and ERαβ-/- mice. The findings indicated for the first time that while estrogen regulates ERα and ERβ expression in the uterus, ERα and ERβ selectively regulate uterine glycolytic enzyme expression during glycolysis. Additionally, the link between endometrial ER subtypes and glycolysis in women with polycystic ovary syndrome (PCOS) is discussed. The findings suggested that the E2-dependent ER-mediated regulation of glycolysis may be involved in the disturbance of the glucose metabolism in patients with PCOS with endometrial dysfunction.
Collapse
Affiliation(s)
- Min Hu
- Department of Traditional Chinese Medicine, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510120, P.R. China.,Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Yuehui Zhang
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.,Department of Obstetrics and Gynecology, Key Laboratory and Unit of Infertility in Chinese Medicine, First Affiliated Hospital, Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang 150040, P.R. China
| | - Emil Egecioglu
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Xin Li
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden.,Department of Gynecology, Obstetrics and Gynecology Hospital of Fudan University, P.R. China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Fudan University, Shanghai 200011, P.R. China
| | - Linus R Shao
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| | - Håkan Billig
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, 40530 Gothenburg, Sweden
| |
Collapse
|
11
|
Li C, Zhou L, Xie Y, Guan C, Gao H. Effect of irisin on endometrial receptivity of rats with polycystic ovary syndrome. Gynecol Endocrinol 2019; 35:395-400. [PMID: 30626233 DOI: 10.1080/09513590.2018.1529158] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
To investigate the influence of irisin on endometrial receptivity of rats with polycystic ovarian syndrome (PCOS). PCOS rats were randomly divided into PCOS group and irisin group, and normal rats were used as control group. The PCOS group and control group were injected intraperitoneally with normal saline while the irisin group with recombinant irisin. The serum and uterus were obtained. Detect serum sex hormones, including Testosterone (T), Estradiol (E2), Progesterone (P), and glucose, insulin levels. Observe endometrial morphology by hematoxylin-eosin staining. Then evaluate the expression of leukemia inhibitory factor (LIF) and integrin αvβ3 in endometrium using ELISA, immunohistochemistry and Real-time PCR. (1) Levels of serum T, glucose and insulin in PCOS group were significantly higher than those in control and irisin group. (2) For the endometrial morphology, levels of equivalent diameter, area of uterine glands and gland cavity and endometrial average thickness were lower in PCOS group than those in control and irisin group. (3) LIF and integrin αvβ3 mRNA were basically consistent with protein expression. Levels of LIF and integrin αvβ3 were decreased in PCOS group when compared with control and irisin group. Irisin may improve endometrial receptivity by promoting expression of LIF and integrin αvβ3.
Collapse
Affiliation(s)
- Chenggang Li
- a School of Pharmaceutical Sciences , Hubei University of Medicine, Shiyan , China
| | - Li Zhou
- b Department of Traditional Chinese Medicine, Affliated Dongfeng Hospital , Hubei University of Medicine , Shiyan , China
| | - Yong Xie
- a School of Pharmaceutical Sciences , Hubei University of Medicine, Shiyan , China
| | - Chuang Guan
- b Department of Traditional Chinese Medicine, Affliated Dongfeng Hospital , Hubei University of Medicine , Shiyan , China
| | - Haifeng Gao
- b Department of Traditional Chinese Medicine, Affliated Dongfeng Hospital , Hubei University of Medicine , Shiyan , China
| |
Collapse
|
12
|
Yi T, Liu M, Li X, Liu X, Ding Y, He J, Xu H, Gao R, Mu X, Geng Y, Wang Y, Chen X. Benzo(a)pyrene inhibits endometrial cell apoptosis in early pregnant mice via the WNT5A pathway. J Cell Physiol 2018; 234:11119-11129. [PMID: 30443902 DOI: 10.1002/jcp.27762] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/29/2018] [Indexed: 12/14/2022]
Abstract
Benzo(a)pyrene (BaP) is an endocrine-disrupting pollutant present in various aspects of daily life, and studies have demonstrated that BaP exerts reproductive toxicity. We previously showed that BaP damages endometrial morphology and decreases the number of implantation sites in early pregnant mice, but the mechanisms underlying these effects remain unclear. The endometrial function is crucial for implantation, which is associated with endometrial cell apoptosis. In this study, we focused on the effect of BaP on endometrial cell apoptosis and the role of WNT signaling during this process. Pregnant mice were gavaged with corn oil (control group) or 0.2 mg·kg-1 ·day -1 BaP (treatment group) from Days 1 to 6 of pregnancy. BaP impaired endometrial function by decreasing the expression of HOXA10 and BMP2, two markers of receptivity and decidualization. WNT5A and β-catenin were activated in the BaP group. BaP affected the expression of apoptosis-related proteins and inhibited the apoptosis of endometrial stromal cells. In vitro, human endometrial stromal cells (HESCs) were treated with different concentrations of BaP (dimethyl sulfoxide (DMSO); 5, 10 µM). WNT5A and β-catenin were also upregulated in the BaP treatment group. HESC apoptosis was restrained by BaP. Inhibiting WNT5A by SFRP5 partially restored the effect of BaP on apoptosis. In summary, these results suggested that BaP exposure during early pregnancy activates WNT5A/β-catenin signaling pathway, which inhibits the endometrial cell apoptosis and potentially destroys endometrial function.
Collapse
Affiliation(s)
- Ting Yi
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Min Liu
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xueyan Li
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xueqing Liu
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yubin Ding
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Junlin He
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Hanting Xu
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Rufei Gao
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xinyi Mu
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yanqing Geng
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Yingxiong Wang
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| | - Xuemei Chen
- Laboratory of Reproductive Biology, School of Public Health and Management, Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China
| |
Collapse
|
13
|
Reusche N, Beineke A, Urhausen C, Beyerbach M, Schmicke M, Kramer S, Günzel-Apel A. Proliferative and apoptotic changes in the healthy canine endometrium and in cystic endometrial hyperplasia. Theriogenology 2018; 114:14-24. [DOI: 10.1016/j.theriogenology.2018.03.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 03/02/2018] [Accepted: 03/13/2018] [Indexed: 10/17/2022]
|
14
|
Investigation of the uterine structural changes in the experimental model with polycystic ovary syndrome and effects of vitamin D treatment: An ultrastructural and immunohistochemical study. Reprod Biol 2018; 18:53-59. [DOI: 10.1016/j.repbio.2018.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/17/2017] [Accepted: 01/02/2018] [Indexed: 01/26/2023]
|
15
|
Plaza-Parrochia F, Romero C, Valladares L, Vega M. Endometrium and steroids, a pathologic overview. Steroids 2017; 126:85-91. [PMID: 28827068 DOI: 10.1016/j.steroids.2017.08.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Revised: 08/07/2017] [Accepted: 08/12/2017] [Indexed: 11/27/2022]
Abstract
Normal endometrial function requires of cell proliferation and differentiation; therefore, disturbances in these processes could lead to pathological entities such as hyperplasia and endometrial adenocarcinoma, where cell proliferation is increased. The development of these pathologies is highly related to alterations in the levels and/or action of sexual steroids. In the present review, it has been analyzed how steroids, particularly estrogens, androgens and progestagens are involved in the etiopathogenesis of hyperplasia and endometrial endometrioid adenocarcinoma. The emphasis is given on pathological and pharmacological conditions that are presented as risk factors for endometrial pathologies, such as obesity, polycystic ovarian syndrome and hormone replacement postmenopausal women therapy, among others. Steroids alterations may promote changes at molecular level that enhance the development of hyperplasia and endometrioid cancer. In fact, there are solid data that indicate that estrogens stimulate cell-proliferation in this tissue; meanwhile, progestagens are able to stop cell proliferation and to increase differentiation. Nevertheless, the role of androgens is less clear, since there is contradictory information. It is most likely that the major contribution of steroids to the development of cell proliferation pathologies in endometria would be in early stages, where there is a high sensitivity to these molecules. This phenomenon is present even in stages previous to the occurrence of hyperplasia, like in the condition of polycystic ovarian syndrome, where the endometria have a greater sensitivity to steroids and high expression of cell cycle molecules. These abnormalities would contribute to the pathogenesis of hyperplasia and then in the progression to endometrioid adenocarcinoma.
Collapse
Affiliation(s)
- Francisca Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile.
| | - Carmen Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Luis Valladares
- Institute of Nutrition and Food Technology, University of Chile, Macul #5540, Chile
| | - Margarita Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile.
| |
Collapse
|
16
|
Sumarac-Dumanovic M, Apostolovic M, Janjetovic K, Jeremic D, Popadic D, Ljubic A, Micic J, Dukanac-Stamenkovic J, Tubic A, Stevanovic D, Micic D, Trajkovic V. Downregulation of autophagy gene expression in endometria from women with polycystic ovary syndrome. Mol Cell Endocrinol 2017; 440:116-124. [PMID: 27845161 DOI: 10.1016/j.mce.2016.11.009] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 10/12/2016] [Accepted: 11/10/2016] [Indexed: 01/10/2023]
Abstract
Autophagy, a process of controlled cellular self-digestion, could be involved in cyclic remodeling of the human endometrium. We investigated endometrial mRNA expression of 23 autophagy-related (ATG) genes and transcription factors in healthy controls (n = 12) and anovulatory polycystic ovary syndrome (PCOS) patients (n = 24), as well as in their subgroup (n = 12) before and after metformin treatment. The mRNA levels of transcription factor forkhead box protein O1 (FOXO1) and several molecules involved in autophagosome formation (ATG13, RB1-inducible coiled-coil 1), autophagosome nucleation (ATG14, beclin 1, SH3-domain GRB2-like endophilin B1), autophagosome elongation (ATG3, ATG5, γ-aminobutyric acid receptor-associated protein - GABARAP), and delivery of ubiquitinated proteins to autophagosomes (sequestosome 1), were significantly reduced in anovulatory PCOS compared to healthy endometrium. Free androgen index, but not free estrogen index, insulin levels, or body mass index, negatively correlated with the endometrial expression of ATG3, ATG14, and GABARAP in PCOS patients. Treatment of PCOS patients with metformin (2 g/day for 3 months) significantly increased the endometrial mRNA levels of FOXO1, ATG3, and UV radiation resistance-associated gene. These data suggest that increased androgen availability in PCOS is associated with metformin-sensitive transcriptional downregulation of endometrial autophagy.
Collapse
Affiliation(s)
- Mirjana Sumarac-Dumanovic
- Clinic for Endocrinology, Diabetes, and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia; School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Kristina Janjetovic
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Danka Jeremic
- Clinic for Endocrinology, Diabetes, and Diseases of Metabolism, Clinical Center of Serbia, Belgrade, Serbia
| | - Dusan Popadic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia
| | | | - Jelena Micic
- School of Medicine, University of Belgrade, Belgrade, Serbia; Clinic for Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia
| | - Jelena Dukanac-Stamenkovic
- School of Medicine, University of Belgrade, Belgrade, Serbia; Clinic for Gynecology and Obstetrics, Clinical Center of Serbia, Belgrade, Serbia
| | - Aleksandra Tubic
- Clinic for Gynecology and Obstetrics, Clinical Center of Nis, Nis, Serbia
| | - Darko Stevanovic
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Dragan Micic
- School of Medicine, University of Belgrade, Belgrade, Serbia.
| | - Vladimir Trajkovic
- Institute of Microbiology and Immunology, School of Medicine, University of Belgrade, Belgrade, Serbia.
| |
Collapse
|
17
|
Lee MJ, Jang M, Bae CS, Park KS, Kim HJ, Lee S, Lee SW, Kim YO, Cho IH. Effects of Oriental Medicine Kyung-Ok-Ko on Uterine Abnormality in Hyperandrogenized Rats. Rejuvenation Res 2016; 19:456-466. [DOI: 10.1089/rej.2015.1787] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Affiliation(s)
- Min Jung Lee
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
- Brain Korea 21 Plus Program, Kyung Hee University, Seoul, Republic of Korea
| | - Minhee Jang
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Chun-Sik Bae
- College of Veterinary Medicine and Animal Medical Institute, Chonnam National University, Gwangju, Republic of Korea
| | - Kyoung-Sun Park
- Department of Korean Medicine Obstetrics & Gynecology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hak-Jae Kim
- Department of Clinical Pharmacology, College of Medicine, Soonchunhyang University, Cheonan, Republic of Korea
| | - Sanghyun Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong, Republic of Korea
| | - Sang Won Lee
- Department of Medicinal Crop Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Young Ock Kim
- Department of Medicinal Crop Research Institute, National Institute of Horticultural & Herbal Science, Rural Development Administration, Eumseong, Republic of Korea
| | - Ik-Hyun Cho
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
- Brain Korea 21 Plus Program, Kyung Hee University, Seoul, Republic of Korea
- Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| |
Collapse
|
18
|
Plaza-Parrochia F, Oróstica L, García P, Vera C, Romero C, Valladares L, Vega M. Molecular Mechanisms of Androstenediol in the Regulation of the Proliferative Process of Human Endometrial Cells. Reprod Sci 2016; 24:1079-1087. [DOI: 10.1177/1933719116678689] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Francisca Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - Lorena Oróstica
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - Paula García
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - Carolina Vera
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - Carmen Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - Luis Valladares
- Institute of Nutrition and Food Technology, University of Chile, Macul, Chile
| | - Margarita Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| |
Collapse
|
19
|
Abstract
Polycystic ovary syndrome (PCOS) affects approximately 5 to 10% of women of reproductive age. It is the most common reason of anovulation in infertile women. PCOS is accompanied by such conditions as oligo- or anovulation, hipertestosteronism, lower cell sensitivity to insulin, type II diabetes, hyperlipidemia and obesity. Each of the above-mentioned conditions is an approved risk factor proved to predispose towards cancer. However, PCOS is also a disease entity which differs in its clinical manifestation. For example not all patients suffer from obesity or hipertestosteronism related symptoms. From the analysis of literature it is possible to draw conclusions, that there is a possible correlation between PCOS and endometrial cancer, which emerges from clinical trials or research focused on molecular changes in endometrium patients with PCOS. On the other hand, correlation between PCOS and breast or ovary cancer is not so strong, in spite of single papers which are showing the link. The main problem in researching the correlation between PCOS and any cancer risk, is there is a very small group of women or the trial is imperfect (e.g. no control group). There is no meta-analysis focused on this correlation in literature. The change of criteria of PCOS in the past is also a big problem, because there was a number of definitions of PCOS, which results in inconsistent PCOS diagnoses over time. In this paper we would like to provide a description of studies that aimed at showing correlation between PCOS and cancer risk and underlying theoretical assumptions.
Collapse
|
20
|
Plaza-Parrochia F, Poblete C, Gabler F, Carvajal R, Romero C, Valladares L, Vega M. Expression of steroid sulfated transporters and 3β-HSD activity in endometrium of women having polycystic ovary syndrome. Steroids 2015; 104:189-95. [PMID: 26450365 DOI: 10.1016/j.steroids.2015.10.001] [Citation(s) in RCA: 7] [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: 07/28/2015] [Revised: 09/02/2015] [Accepted: 10/03/2015] [Indexed: 12/15/2022]
Abstract
Intracrinology mechanism involves the metabolism of steroids in peripheral tissues, such as DHEA, to molecules with estrogenic or androgenic activity. Proliferation rate of endometria from Polycystic Ovary Syndrome women (PCOS) is increased, favoring hyperplasia development. Besides, in endometria from PCOS-women the synthesis of androst-5-ene-3β,17β-diol (androstenediol), an estrogenic molecule, is enhanced concomitantly to increased cellular proliferation. DHEA, the major intracrinological precursor, circulates mainly in its sulfated form and requires transporters for cell intake, that belong to the families of organic anion transporting polypeptides (OATP) and organic anion transporters (OAT). The aim of this study was to determine protein levels and activity of sulfated steroid transporters OATP2B1, OATP3A1, OATP4A1 and OAT4 in endometria from control and PCOS-women and to evaluate the activity of the enzyme 3β-HSD. Levels of transporters were done by RT-PCR (OAT4 only) and Western-blot (WB). Additionally, in primary culture cells stimulated with steroids, protein levels by WB and uptake of tritiated DHEAS, were evaluated; 3β-HSD activity was assessed using radiolabel substrate. PCOS-endometrium had higher levels of OATP2B1 and OATP4A1 than CE (p<0.05); decreased OATP4A1 levels were found in androstenediol or testosterone-stimulated cells. Accordingly, the entry of DHEAS to cells was lower in cells stimulated with testosterone (p<0.05); 3β-HSD-activity was similar in control and PCOS-endometria. Therefore, this study describes that steroids can modulate the expression and activity of transporters of OATPs-family in human endometria and that some transporter levels are increased in PCOS-endometria, suggesting a potential role in the pathogenesis of endometrial hyperplasia of these patients.
Collapse
Affiliation(s)
- Francisca Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont #999, Santiago, Chile
| | - Cristian Poblete
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont #999, Santiago, Chile
| | - Fernando Gabler
- Department of Pathology, School of Medicine, University of Chile, San Borja Arriarán Clinical Hospital, Santa Rosa #1234, Chile
| | - Rodrigo Carvajal
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont #999, Santiago, Chile
| | - Carmen Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont #999, Santiago, Chile
| | - Luis Valladares
- Institute of Nutrition and Food Technology, University of Chile, Macul #5540, Chile
| | - Margarita Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont #999, Santiago, Chile.
| |
Collapse
|
21
|
Bacallao K, Plaza-Parrochia F, Cerda A, Gabler F, Romero C, Vantman D, Vega M. Levels of Regulatory Proteins Associated With Cell Proliferation in Endometria From Untreated Patients Having Polycystic Ovarian Syndrome With and Without Endometrial Hyperplasia. Reprod Sci 2015; 23:211-8. [DOI: 10.1177/1933719115597762] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- K. Bacallao
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
- Interdisciplinary Stem Cell Institute, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - F. Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - A. Cerda
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - F. Gabler
- Department of Pathology, School of Medicine, University of Chile, San Borja Arriarán Clinical Hospital, Santiago, Chile
| | - C. Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - D. Vantman
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| | - M. Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Santiago, Chile
| |
Collapse
|
22
|
Plaza-Parrochia F, Bacallao K, Poblete C, Gabler F, Carvajal R, Romero C, Valladares L, Vega M. The role of androst-5-ene-3β,17β-diol (androstenediol) in cell proliferation in endometrium of women with polycystic ovary syndrome. Steroids 2014; 89:11-9. [PMID: 25065586 DOI: 10.1016/j.steroids.2014.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 07/04/2014] [Accepted: 07/09/2014] [Indexed: 02/07/2023]
Abstract
Women with polycystic ovary syndrome (PCOS) show high prevalence of endometrial hyperplasia and adenocarcinoma. Endometrial proliferation is increased, evaluated by high levels of Ki67 (cell cycle marker) and low levels of p27 (negative regulator of cell cycle). Nevertheless, endometrial changes in cyclin D1 (positive regulator of cell cycle) in PCOS-women are not described. Androst-5-ene-3β,17β-diol (androstenediol), steroid with estrogenic activity present in endometria, could be related to increased endometrial cell proliferation. The objective of this study was to determine protein content of cyclin D1 and androstenediol levels in endometria from PCOS and control-women and to evaluate the possible mechanism favoring cell proliferation associated with hormonal characteristics of patients. Therefore, cyclin D1 protein content in PCOS-women and control-endometrial tissue were assessed by western blot and immunohistochemistry. The androstenediol levels were evaluated by ELISA. To further analyze the effect of steroids (androstenediol, 17β-estradiol, testosterone) in cell proliferation, levels of proteins cyclin D1, p27 and Ki67 were evaluated in an in vitro model of stromal endometrial cells T-HESC and St-T1b. An increase in cyclin D1 and androstenediol was observed in tissues from PCOS-women relative to control group (p<0.05). In the in vitro model, androstenediol exerted increase in cyclin D1 (p<0.05) and a decrease in p27 protein level (p<0.05), while Ki67 in St-T1b cells increased under this stimulus (p<0.05). Testosterone produces opposite effects in the levels of the above markers (p<0.05). Therefore, the hormonal imbalance associated with this syndrome could alter endometrial tissue homeostasis, promoting cell proliferation. Androstenediol is a molecule that could be involved by stimulating proliferation, whereas testosterone elicits a role of cell cycle repressor.
Collapse
Affiliation(s)
- Francisca Plaza-Parrochia
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Ketty Bacallao
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Cristian Poblete
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Fernando Gabler
- Department of Pathology, School of Medicine, University of Chile, San Borja Arriarán Clinical Hospital, Santa Rosa #1234, Chile
| | - Rodrigo Carvajal
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Carmen Romero
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | - Luis Valladares
- Institute of Nutrition and Food Technology, University of Chile, Macul #5540, Chile
| | - Margarita Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile.
| |
Collapse
|
23
|
Shafiee MN, Khan G, Ariffin R, Abu J, Chapman C, Deen S, Nunns D, Barrett DA, Seedhouse C, Atiomo W. Preventing endometrial cancer risk in polycystic ovarian syndrome (PCOS) women: Could metformin help? Gynecol Oncol 2014; 132:248-53. [DOI: 10.1016/j.ygyno.2013.10.028] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 10/11/2013] [Accepted: 10/22/2013] [Indexed: 12/13/2022]
|
24
|
Reviewing the molecular mechanisms which increase endometrial cancer (EC) risk in women with polycystic ovarian syndrome (PCOS): Time for paradigm shift? Gynecol Oncol 2013; 131:489-92. [DOI: 10.1016/j.ygyno.2013.06.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 06/20/2013] [Accepted: 06/24/2013] [Indexed: 11/21/2022]
|
25
|
Yan L, Wang A, Chen L, Shang W, Li M, Zhao Y. Expression of apoptosis-related genes in the endometrium of polycystic ovary syndrome patients during the window of implantation. Gene 2012; 506:350-4. [PMID: 22789864 DOI: 10.1016/j.gene.2012.06.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2011] [Revised: 06/12/2012] [Accepted: 06/19/2012] [Indexed: 12/16/2022]
Abstract
The present study investigated the expression of the apoptosis-related genes fas-associated via death domain (FADD) and Bcl-2 in the endometrium during the window of implantation in polycystic ovary syndrome (PCOS) patients. The aim was to explore the role of cell apoptosis in endometrial receptivity during this period. The subjects were divided into experimental and control group. The experimental group comprised 12 infertile women with PCOS, and the control group comprised 12 women who were infertile because of tubal pathological factors but had normal menstrual cycles. Endometria were collected by biopsy 7d after ovulation. Six samples from each group were randomly selected and subjected to gene chip analyses. The expression of endometrial FADD and Bcl-2 was determined by immunohistochemistry, and cell apoptosis was detected by the TUNEL method. Compared with the control group, 194 differentially expressed genes were found in the PCOS group, 102 of which were upregulated and 92 were downregulated. The differentially expressed genes were divided into 15 types according to function. Among the nine genes related to cell apoptosis, five (including Bcl-2) were upregulated and four were downregulated (including FADD). Bcl-2 expression during the window of implantation in the PCOS group increased compared with the control group, showing a significant difference (P<0.05). FADD expression in the PCOS group notably decreased compared with that in the control group, which also showed a significant difference (P<0.05). Cell apoptosis analysis showed a significant difference between the average apoptotic indices in the PCOS and control groups (P<0.05). Significant differences were observed between the endometrial gene expression in the PCOS and control groups. The decrease in cell apoptosis during the window of implantation in PCOS patients may be one of the causes of the reduced endometrial receptivity.
Collapse
Affiliation(s)
- Ling Yan
- Obstetrics and Gynecology Department of Navy General Hospital of Chinese PLA, Beijing 100048, China
| | | | | | | | | | | |
Collapse
|
26
|
Rivero R, Garin CA, Ormazabal P, Silva A, Carvajal R, Gabler F, Romero C, Vega M. Protein expression of PKCZ (Protein Kinase C Zeta), Munc18c, and Syntaxin-4 in the insulin pathway in endometria of patients with polycystic ovary syndrome (PCOS). Reprod Biol Endocrinol 2012; 10:17. [PMID: 22390153 PMCID: PMC3317829 DOI: 10.1186/1477-7827-10-17] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 03/05/2012] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Polycystic Ovary Syndrome (PCOS) is an endocrine-metabolic disorder commonly associated with insulin resistance (IR). Previous studies indicate about the expression of molecules involved in the insulin pathway in endometria of women with PCOS-IR. Therefore, the aim of the present study was to evaluate the effect of insulin and testosterone in the expression of these proteins in the endometria and immortal endometrial stromal cell line (T-HESCs). METHODS We examined the protein levels of Munc18c, PKC zeta, phospho-PKC Zeta, and Syntaxin-4. Protein levels were assessed by Western Blot and/or immunohistochemistry in proliferative endometria (NPE = 6) and in PCOS endometria with insulin resistance (PCOSE-IR = 6). We also evaluated whether high concentrations of insulin (100 nM) and/or testosterone (100 nM), during a 24 h stimulatory period, affected the expression of these proteins in an immortal endometrial stromal cell line (T-HESCs). Once stimulated, proteins were extracted from cells and were assessed by Western Blot analysis. Immunocytochemistry was performed to detect AR in T-HESC cells. RESULTS Western Blot data showed decreased expression (p < 0,05) of Munc18c and phospho-PKC Zeta in PCOS-IR endometria (PCOSE-IR) with respect to the control (NPE). In the in vitro study, Western Blot analysis showed decreased levels of Munc18c, PKC Zeta and phospho-PKC Zeta with the different hormonal treatments when compared to the control condition (no hormonal stimulation) (p < 0,05). The AR was present in the endometrial stromal cell line (T-HESC). CONCLUSION The conditions of hyperinsulinism and hyperandrogenism present in PCOS-IR patients modulate the expression and/or phosphorylation of the proteins involved in the insulin pathway at the endometrial level. These data extend to the T-HESCs cells results, where insulin and testosterone exert an effect on both the expression and phosphorylation of proteins present in the pathway.
Collapse
Affiliation(s)
- Rodrigo Rivero
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
| | - Claire-Alix Garin
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
| | - Paulina Ormazabal
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
| | - Andrea Silva
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
| | - Rodrigo Carvajal
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
- Department of Obstetrics and Gynaecology, School of Medicine, University of Chile, Santiago, Chile
| | - Fernando Gabler
- Department of Pathology, School of Medicine, University of Chile, Santiago, Chile
| | - Carmen Romero
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
- Department of Obstetrics and Gynaecology, School of Medicine, University of Chile, Santiago, Chile
| | - Margarita Vega
- Endocrinology and Reproductive Biology Laboratory, Clinical Hospital University of Chile (HCUCH), Santiago, Chile
- Department of Obstetrics and Gynaecology, School of Medicine, University of Chile, Santiago, Chile
| |
Collapse
|
27
|
Abstract
AIMS To review the relationship between insulin resistance and polycystic ovary syndrome. METHODS A literature review. RESULTS Insulin resistance likely plays a central pathogenic role in polycystic ovary syndrome and may explain the pleiotropic presentation and involvement of multiple organ systems. Insulin resistance in the skeletal muscle of women with polycystic ovary syndrome involves both intrinsic and acquired defects in insulin signalling. The cellular insulin resistance in polycystic ovary syndrome has been further shown to involve a novel post-binding defect in insulin signal transduction. Treatment of insulin resistance through lifestyle therapy or with a diabetes drug has become mainstream therapy in women with polycystic ovary syndrome. However, effects with current pharmacologic treatment with metformin tend to be modest, with limited benefit as an agent to treat infertility. Insulin resistance contributes to increased risk for pregnancy complications, diabetes and cardiovascular disease risk profile in polycystic ovary syndrome, which is further exacerbated by obesity. While numerous studies demonstrate increased prevalence of cardiovascular disease risk factors in women with polycystic ovary syndrome, there are limited data showing that women with polycystic ovary syndrome are at increased risk for cardiovascular disease events. CONCLUSIONS Insulin resistance is linked to polycystic ovary syndrome. Further study of lifestyle and pharmacologic interventions that reduce insulin resistance, such as metformin, are needed to demonstrate that they are effective in reducing the risk of diabetes, endometrial abnormalities and cardiovascular disease events in women with polycystic ovary syndrome.
Collapse
Affiliation(s)
- J M Pauli
- Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA 17033, USA
| | | | | | | |
Collapse
|
28
|
Marshall E, Lowrey J, MacPherson S, Maybin JA, Collins F, Critchley HOD, Saunders PTK. In silico analysis identifies a novel role for androgens in the regulation of human endometrial apoptosis. J Clin Endocrinol Metab 2011; 96:E1746-55. [PMID: 21865353 PMCID: PMC3380091 DOI: 10.1210/jc.2011-0272] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
CONTEXT The endometrium is a multicellular, steroid-responsive tissue that undergoes dynamic remodeling every menstrual cycle in preparation for implantation and, in absence of pregnancy, menstruation. Androgen receptors are present in the endometrium. OBJECTIVE The objective of the study was to investigate the impact of androgens on human endometrial stromal cells (hESC). DESIGN Bioinformatics was used to identify an androgen-regulated gene set and processes associated with their function. Regulation of target genes and impact of androgens on cell function were validated using primary hESC. SETTING The study was conducted at the University Research Institute. PATIENTS Endometrium was collected from women with regular menses; tissues were used for recovery of cells, total mRNA, or protein and for immunohistochemistry. RESULTS A new endometrial androgen target gene set (n = 15) was identified. Bioinformatics revealed 12 of these genes interacted in one pathway and identified an association with control of cell survival. Dynamic androgen-dependent changes in expression of the gene set were detected in hESC with nine significantly down-regulated at 2 and/or 8 h. Treatment of hESC with dihydrotestosterone reduced staurosporine-induced apoptosis and cell migration/proliferation. CONCLUSIONS Rigorous in silico analysis resulted in identification of a group of androgen-regulated genes expressed in human endometrium. Pathway analysis and functional assays suggest androgen-dependent changes in gene expression may have a significant impact on stromal cell proliferation, migration, and survival. These data provide the platform for further studies on the role of circulatory or local androgens in the regulation of endometrial function and identify androgens as candidates in the pathogenesis of common endometrial disorders including polycystic ovarian syndrome, cancer, and endometriosis.
Collapse
Affiliation(s)
- Elaine Marshall
- Medical Research Council Centre for Reproductive Health, The University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh EH164TJ, United Kingdom
| | | | | | | | | | | | | |
Collapse
|
29
|
Poujade O, Gervaise A, Faivre E, Deffieux X, Fernandez H. Surgical management of infertility due to polycystic ovarian syndrome after failure of medical management. Eur J Obstet Gynecol Reprod Biol 2011; 158:242-7. [DOI: 10.1016/j.ejogrb.2011.05.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 04/11/2011] [Accepted: 05/05/2011] [Indexed: 11/25/2022]
|
30
|
Fornes R, Ormazabal P, Rosas C, Gabler F, Vantman D, Romero C, Vega M. Changes in the expression of insulin signaling pathway molecules in endometria from polycystic ovary syndrome women with or without hyperinsulinemia. Mol Med 2009; 16:129-36. [PMID: 20011249 DOI: 10.2119/molmed.2009.00118] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Accepted: 12/03/2009] [Indexed: 12/23/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) is an endocrine-metabolic disorder associated with insulin resistance and compensatory hyperinsulinemia. Scarce information is available on the expression of molecules involved in the insulin pathway in endometria from women with PCOS. Therefore, we examined the protein levels of insulin-signaling molecules, like insulin receptor, insulin-receptor substrate (IRS)-1, pIRS-1Y612, Akt, AS160, pAS160T642 and GLUT4 in endometria from PCOS women with or without hyperinsulinemia. Protein levels were assessed by Western blot and immunohistochemistry in 21 proliferative-phase endometria from control women (CE = 7), normoinssulinemic PCOS women (PCOSE-NI = 7) and hyperinsulinemic PCOS women (PCOSE-HI = 7). The data show no differences in the expression of insulin receptor between all groups as assessed by Western blot; however, IRS-1 and pIRS-1Y612 were lower in PCOSE-HI than controls and PCOSE-NI (P < 0.05). AS160 was detected in all analyzed tissues with similar expression levels between groups. Importantly, PCOSE-HI exhibited lower levels of pAS160T642 (P < 0.05) and of GLUT4 (P < 0.05) compared with CE. The immunohistochemistry for insulin receptor, IRS-1, Akt, AS160 and GLUT4 showed epithelial and stromal localization; IRS-1 staining was lower in PCOSE-HI (P < 0.05). In conclusion, human endometrium has the machinery for glucose uptake mediated by insulin. The diminished expression of GLUT4, as well as the lower level of pIRS-1Y612 and pAS160T642 exhibited by PCOSE-HI, suggests a disruption in the translocation of vesicles with GLUT4 to the cell surface in these patients.
Collapse
Affiliation(s)
- Romina Fornes
- Laboratory of Endocrinology and Reproductive Biology, University of Chile Clinical Hospital, Santiago, Chile
| | | | | | | | | | | | | |
Collapse
|
31
|
Villavicencio A, Goyeneche A, Telleria C, Bacallao K, Gabler F, Fuentes A, Vega M. Involvement of Akt, Ras and cell cycle regulators in the potential development of endometrial hyperplasia in women with polycystic ovarian syndrome. Gynecol Oncol 2009; 115:102-107. [PMID: 19631369 DOI: 10.1016/j.ygyno.2009.06.033] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Revised: 06/02/2009] [Accepted: 06/21/2009] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To examine whether the abundance, localization, and/or activity of cell cycle regulators CDK2, Cyclin E, p27, and survival proteins AKT and Ras in PCOS-associated endometria (with and without hyperplasia) differ from non-PCOS endometria. METHODS The expression of CDK2, Cyclin E, p27, AKT and Ras was measured by immunohistochemistry and/or Western blot in 9 normal endometria (NE), 12 endometria from PCOS patients without endometrial hyperplasia (PCOSE), 7 endometria from PCOS women with endometrial hyperplasia (HPCOSE), and 9 endometria from patients with endometrial hyperplasia (HE). The activity of CDK2 was assessed by an in vitro kinase assay. RESULTS CDK2, Cyclin E and p27 proteins were expressed mainly in the endometrial epithelial cells of the studied groups. No change in the activity of CDK2 was observed in total extracts obtained from the tissue samples. However, the nuclear expression of CDK2 in epithelial cells was slightly elevated in PCOSE and significantly increased in HPCOSE when compared to NE. Higher expression of p27 was detected in the cytoplasm of epithelial cells of PCOSE and HPCOSE when compared to NE. Also, we found an increment in Ser473-AKT phosphorylation and an over-expression of the Ras oncogene in endometria of patients with PCOS. CONCLUSION The PCOS condition is associated with increased Ser473-AKT phosphorylation, elevated expression of Ras, increased cytoplasmic abundance of p27, and increased nuclear abundance of CDK2 in the endometrial epithelial cells. These biological events could potentially provide a chance for endometrial cells from PCOS patients to exit the controlled cell cycle and become hyperplastic at a later stage.
Collapse
Affiliation(s)
- A Villavicencio
- Institute of Nutrition and Food Technology, University of Chile, Chile
| | - A Goyeneche
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, USA
| | - C Telleria
- Division of Basic Biomedical Sciences, Sanford School of Medicine, University of South Dakota, USA
| | - K Bacallao
- Department of Cell Biology and Anatomy, Miller School of Medicine, University of Miami, USA
| | - F Gabler
- Department of Pathology, San Borja-Arriarán Clinical Hospital, School of Medicine, University of Chile, Chile
| | - A Fuentes
- Institute of Maternal and Child Research, School of Medicine, University of Chile, Chile
| | - M Vega
- Department of Obstetrics and Gynecology, School of Medicine, University of Chile Clinical Hospital, Chile.
| |
Collapse
|
32
|
Bacallao K, Leon L, Gabler F, Soto E, Romero C, Valladares L, Vega M. In situ estrogen metabolism in proliferative endometria from untreated women with polycystic ovarian syndrome with and without endometrial hyperplasia. J Steroid Biochem Mol Biol 2008; 110:163-9. [PMID: 18467089 DOI: 10.1016/j.jsbmb.2008.03.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2007] [Revised: 03/06/2008] [Accepted: 03/25/2008] [Indexed: 01/18/2023]
Abstract
The aim of the present investigation was to study whether the endocrinological status of women bearing polycystic ovarian syndrome (PCOS) affects the endometrial in situ steroid metabolism. For this purpose, we evaluated the mRNA levels (RT-PCR), and the activity of steroid metabolic enzymes: P450 aromatase, steroid sulfatase (STS), estrogen sulfotransferase (EST) and 17beta-hydroxysteroid dehydrogenase (17beta-HSD) in 23 samples of normal endometria (CE), 18 PCOS endometria without treatment (PCOSE), 10 specimens from PCOS women with endometrial hyperplasia (HPCOSE), and 7 endometria from patients with endometrial hyperplasia not associated to PCOS (EH). The data showed lower levels of STS mRNA for PCOSE and HPCOSE (p<0.05, p<0.01, respectively) and of EST for HPCOSE and EH compared to control (p<0.05). However, higher levels for EST mRNA were obtained in PCOSE (p<0.05) versus CE. The mRNA and protein levels for P450 aromatase were undetectable in all analyzed endometria. The relationship between the activities of STS and EST was lower in PCOSE and HPCOSE (p<0.05) versus CE. The ratio between the mRNA from 17beta-HSD type 1/type 2 was higher in PCOSE (p<0.05), whereas, a diminution in the 17beta-HSD type 2 activity was observed in PCOSE (p<0.05). These results indicate that the activity of enzymes related to the steroid metabolism in analyzed PCOSE differ from those found in the CE. Consequently, PCOSE may present an in situ deregulation of the steroid metabolism.
Collapse
Affiliation(s)
- K Bacallao
- Institute of Maternal and Child Research, School of Medicine, University of Chile, Chile; Department of Obstetrics and Gynecology, School of Medicine, University of Chile, Clinical Hospital, Santos Dumont # 999, Santiago, Chile
| | | | | | | | | | | | | |
Collapse
|