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Karagul MI, Yildirim A, Demiray Asoglu Z, Dogan S, Aktas S, Un I, Barlas IO. Endoplasmic Reticulum Stress in Myometrial Smooth Muscle Cells and Spontaneous Contraction Changes in the Uterus of Dehydroepiandrosterone-induced Polycystic Ovary Syndrome Rats. Cell Biochem Biophys 2024:10.1007/s12013-024-01521-4. [PMID: 39259408 DOI: 10.1007/s12013-024-01521-4] [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] [Accepted: 08/29/2024] [Indexed: 09/13/2024]
Abstract
Myometrial changes in polycystic ovary syndrome (PCOS) are poorly investigated. Thus, we aimed to investigate endoplasmic reticulum (ER) stress in myometrial smooth muscle cells and changes in spontaneous uterine contraction in PCOS. Twenty-one female Sprague-Dawley rats (21 days old) were divided into control (n = 7), vehicle (n = 7) and PCOS (n = 7) groups. While the control group was not injected subcutaneously, the vehicle group was injected subcutaneously with sesame oil (0.2 ml/day) for 20 consecutive days. The PCOS group was injected subcutaneously with dehydroepiandrosterone (6 mg/100 g/day dissolved in 0.2 ml sesame oil) for 20 consecutive days. Blood samples were collected for the measurement of follicle stimulating-hormone (FSH), luteinizing hormone (LH), testosterone (T), estradiol (E2) and glucose-regulated protein 78 (GRP78). The mRNA expression of GRP78 in the uterine tissue samples was analysed by quantitative real-time polymerase chain reaction. GRP78 protein expression was assessed by immunohistochemistry. Myometrial smooth muscle cells were examined by transmission electron microscopy. Uterine contractions were evaluated with isolated organ bath experiments. In the PCOS group, T and LH levels increased significantly, although FSH and E2 levels decreased, but this decrease was not statistically significant. Additionally, GRP78 levels increased significantly in the PCOS group. In the PCOS group, the mRNA level, immunostaining intensity of GRP78, and ER damage grade increased, but the uterine tissue calcium levels, and the frequency and amplitude of spontaneous uterine contractions decreased. The results indicated that increased ER stress in myometrial smooth muscle cells may play a causative role in the decreased spontaneous uterine contractions in PCOS.
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Affiliation(s)
- Meryem Ilkay Karagul
- Department of Histology and Embryology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Turkey.
| | - Ayse Yildirim
- Department of Histology and Embryology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Zehra Demiray Asoglu
- Department of Histology and Embryology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Serdar Dogan
- Department of Medical Biochemistry, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Savas Aktas
- Department of Histology and Embryology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ismail Un
- Department of Medical Pharmacology, Faculty of Medicine, Mersin University, Mersin, Turkey
| | - Ibrahim Omer Barlas
- Department of Medical Biology and Genetics, Faculty of Medicine, Mersin University, Mersin, Turkey
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Kurt I, Kulhan M, AlAshqar A, Borahay MA. Uterine Collagen Cross-Linking: Biology, Role in Disorders, and Therapeutic Implications. Reprod Sci 2024; 31:645-660. [PMID: 37907804 DOI: 10.1007/s43032-023-01386-7] [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: 06/22/2023] [Accepted: 10/13/2023] [Indexed: 11/02/2023]
Abstract
Collagen is an essential constituent of the uterine extracellular matrix that provides biomechanical strength, resilience, structural integrity, and the tensile properties necessary for the normal functioning of the uterus. Cross-linking is a fundamental step in collagen biosynthesis and is critical for its normal biophysical properties. This step occurs enzymatically via lysyl oxidase (LOX) or non-enzymatically with the production of advanced glycation end-products (AGEs). Cross-links found in uterine tissue include the reducible dehydro-dihydroxylysinonorleucine (deH-DHLNL), dehydro-hydroxylysinonorleucine (deH-HLNL), and histidinohydroxymerodesmosine (HHMD); and the non-reducible pyridinoline (PYD), deoxy-pyridinoline (DPD); and a trace of pentosidine (PEN). Collagen cross-links are instrumental for uterine tissue integrity and the continuation of a healthy pregnancy. Decreased cervical cross-link density is observed in preterm birth, whereas increased tissue stiffness caused by increased cross-link density is a pathogenic feature of uterine fibroids. AGEs disrupt embryo development, decidualization, implantation, and trophoblast invasion. Uterine collagen cross-linking regulators include steroid hormones, such as progesterone and estrogen, prostaglandins, proteoglycans, metalloproteinases, lysyl oxidases, nitric oxide, nicotine, and vitamin D. Thus, uterine collagen cross-linking presents an opportunity to design therapeutic targets and warrants further investigation in common uterine disorders, such as uterine fibroids, cervical insufficiency, preterm birth, dystocia, endometriosis, and adenomyosis.
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Affiliation(s)
- Irem Kurt
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Selcuk University Faculty of Medicine, 42000, Konya, Turkey
| | - Mehmet Kulhan
- Department of Gynecology and Obstetrics, Selcuk University Faculty of Medicine, 42000, Konya, Turkey
| | - Abdelrahman AlAshqar
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, 06510, USA
| | - Mostafa A Borahay
- Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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Han S, Wang S, Fan X, Chen M, Wang X, Huang Y, Zhang H, Ma Y, Wang J, Zhang C. Abnormal Expression of Prolyl Oligopeptidase (POP) and Its Catalytic Products Ac-SDKP Contributes to the Ovarian Fibrosis Change in Polycystic Ovary Syndrome (PCOS) Mice. Biomedicines 2023; 11:1927. [PMID: 37509566 PMCID: PMC10377061 DOI: 10.3390/biomedicines11071927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/28/2023] [Accepted: 07/04/2023] [Indexed: 07/30/2023] Open
Abstract
Polycystic ovary syndrome (PCOS) is an endocrine disorder and metabolic syndrome. Ovarian fibrosis pathological change in PCOS has gradually attracted people's attention. In this study, we constructed a PCOS mouse model through the use of dehydroepiandrosterone. Sirius red staining showed that the ovarian tissues in PCOS mice had obvious fibrosis. Prolyl oligopeptidase (POP) is a serine protease and N-acetyl-seryl-aspartyl-lysyl-proline (Ac-SDKP) is its catalytic product. Studies show that abnormal expression and activity of POP and Ac-SDKP are closely related to tissue fibrosis. It was found that the expression of POP and Ac-SDKP was decreased in the ovaries of PCOS mice. Further studies showed that POP and Ac-SDKP promoted the expression of matrix metalloproteinases 2 (MMP-2) expression and decreased the expression of transforming growth factor beta 1 (TGF-β1) in granulosa cells. Hyperandrogenemia is a typical symptom of PCOS. We found that testosterone induced the low expression of POP and MMP2 and high expression of TGF-β1 in granulosa cells. POP overexpression and Ac-SDKP treatment inhibited the effect of testosterone on TGF-β1 and MMP2 in vitro and inhibited ovarian fibrosis in the PCOS mouse model. In conclusion, PCOS ovarian tissue showed obvious fibrosis. Low expression of POP and Ac-SDKP and changes in fibrotic factors contribute to the ovarian pathological fibrosis induced by androgen.
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Affiliation(s)
- Suo Han
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
- Center for Drug Inspection of Guizhou Medical Products Administration, Guizhou Medical Products Administration, Guiyang 550081, China
| | - Shimeng Wang
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Xiang Fan
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Mengchi Chen
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Xiaojie Wang
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Yingtong Huang
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Hongdan Zhang
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Yinyin Ma
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Jing Wang
- Department of Microbiology, College of Medicine, Nanchang University, Nanchang 330006, China
| | - Chunping Zhang
- Department of Cell Biology, College of Medicine, Nanchang University, Nanchang 330006, China
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Effects of myo-inositol plus folic acid on ovarian morphology and oocyte quality in PCOS mouse model. ZYGOTE 2023; 31:111-122. [PMID: 36617989 DOI: 10.1017/s0967199422000557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Although the role of myo-inositol (MYO) in promoting the oocyte quality of PCOS patients has been documented in human studies; the cellular effects of this supplement on oocytes have not been directly examined due to ethical limitations. In the first phase of this study, MYO dosimetry was carried out simultaneously with the PCOS model development. An effective dose was obtained following the assessment of fasting insulin and testosterone levels using ELISA and ovarian morphology appraisal by histopathology. In the second phase, following the continuous administration of the effective dose of MYO and dehydroepiandrosterone (DHEA), cellular evaluation was performed. The quality of oocytes from superovulation was analyzed by examining maturity and normal morphology percentage using a stereomicroscope, intracellular reactive oxygen species (ROS) and glutathione (GSH) levels using fluorometry, and ATP count evaluation using ELISA. The results revealed that, among the four different MYO concentrations, the 0.36 mg/g dose compared with the DHEA group reduced testosterone levels and large atretic antral follicles (LAtAnF) diameter. This dose also increased the corpus luteum count and the granulosa:theca (G/T)layer thickness ratio in antral follicles. Furthermore, this dose increased mature oocytes and normal morphology percentage, ATP count, and GSH levels; however, it decreased ROS levels in mature oocytes. Our findings provide the grounds for further cellular and molecular studies on the PCOS mouse model, suggesting that the improvement in mitochondrial function and its antioxidant properties is probably one of the mechanisms by which MYO increases oocyte quality.
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Mouanness M, Nava H, Dagher C, Merhi Z. Contribution of Advanced Glycation End Products to PCOS Key Elements: A Narrative Review. Nutrients 2022; 14:nu14173578. [PMID: 36079834 PMCID: PMC9460172 DOI: 10.3390/nu14173578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/23/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
In the last decade, data has suggested that dietary advanced glycation end products (AGEs) play an important role in both reproductive and metabolic dysfunctions associated with polycystic ovary syndrome (PCOS). AGEs are highly reactive molecules that are formed by the non-enzymatic glycation process between reducing sugars and proteins, lipids, or nucleic acids. They can be formed endogenously under normal metabolic conditions or under abnormal situations such as diabetes, renal disease, and other inflammatory disorders. Bodily AGEs can also accumulate from exogenous dietary sources particularly when ingested food is cooked and processed under high-temperature conditions, such as frying, baking, or grilling. Women with PCOS have elevated levels of serum AGEs that are associated with insulin resistance and obesity and that leads to a high deposition of AGEs in the ovarian tissue causing anovulation and hyperandrogenism. This review will describe new data relevant to the role of AGEs in several key elements of PCOS phenotype and pathophysiology. Those elements include ovarian dysfunction, hyperandrogenemia, insulin resistance, and obesity. The literature findings to date suggest that targeting AGEs and their cellular actions could represent a novel approach to treating PCOS symptoms.
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Affiliation(s)
| | - Henry Nava
- Rejuvenating Fertility Center, New York, NY 10019, USA
| | - Christelle Dagher
- Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut P.O. Box 100, Lebanon
| | - Zaher Merhi
- Rejuvenating Fertility Center, New York, NY 10019, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, SUNY Downstate Health Sciences University, Brooklyn, NY 11203, USA
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Maimonides Medical Center, Brooklyn, NY 11219, USA
- Correspondence: ; Tel.: +1-(203)-557-9696
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Parker EA, Meyer AM, Garcia Fleury I, Buckwalter JA. Menstrual hormone-induced cyclic thumb CMC instability and degeneration in women: a systematic review. Biol Sex Differ 2022; 13:32. [PMID: 35725646 PMCID: PMC9208132 DOI: 10.1186/s13293-022-00438-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/30/2022] [Indexed: 12/05/2022] Open
Abstract
Background Relaxin is a hormone which peaks during the luteal phase of the menstrual cycle, and a known collagenolytic promoter that has been shown to avidly bind tissues supporting the trapeziometacarpal (TMC) joint in women. We hypothesize a causal linkage between cyclic binding of relaxin to the supporting tissues of the female TMC joint; and to the earlier onset of more severe TMC osteoarthritis (OA) commonly seen in women. Methods A systematic literature review was performed per PRISMA guidelines, qualitatively and quantitatively assessing papers regarding relaxin–TMC joint stability interactions. The primary outcome variable was TMC joint degeneration/loss of function; the “late stage” consequences of relaxin-induced instability. The secondary outcome variable was presence of early signs of relaxin-induced instability; specifically asymptomatic TMC joint laxity in young women. Results In healthy young women, menstrual cycle relaxin peaks corresponded with asymptomatic TMC joint instability. Immunohistochemical studies of TMC arthroplasty patients showed avidly increased relaxin binding to supporting tissues around the TMC joint in women but not men. Demographic analysis of patients from the TMC arthroplasty studies show a predominantly female cohort, who were on average significantly younger than the male surgical patients. Conclusions Each relaxin peak during the menstrual cycle can target receptors on the soft tissues supporting the TMC joint, including—critically—the main stabilizing ligament: the anterior oblique. The cyclic instability is typically asymptomatic for years after menarche, but causes cumulative chondral microtrauma. This likely causes the early-onset, high severity TMC joint OA clinically pervasive among female patients at orthopedic hand clinics. Further research is indicated to develop risk assessment strategies and potential interventional options before and after the onset of hormonal laxity-induced OA. It is widely recognized among hand surgeons that female patients present at a younger age for basal thumb osteoarthritis, with more severe degeneration. The little-known menstrual hormone relaxin, which peaks every ovulatory cycle, may be responsible for the female predominance of this pathology. The soft tissue support structures for the thumb are known to express relaxin receptors which, when activated, trigger lysis of collagen and other extracellular matrix components. Laxity in soft tissues supporting the thumb, such as the deep anterior oblique ligament, would result in joint instability and microtrauma. If women cyclically experience thumb instability and cumulative cartilage microtrauma from menarche through menopause, the female propensity to develop TMC arthritis is aptly justified.
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Affiliation(s)
- Emily A Parker
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa, IA, 52242, USA.
| | - Alex M Meyer
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa, IA, 52242, USA
| | - Ignacio Garcia Fleury
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa, IA, 52242, USA
| | - Joseph A Buckwalter
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa, IA, 52242, USA
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Parker EA, Meyer AM, Goetz JE, Willey MC, Westermann RW. Do Relaxin Levels Impact Hip Injury Incidence in Women? A Scoping Review. Front Endocrinol (Lausanne) 2022; 13:827512. [PMID: 35185802 PMCID: PMC8855110 DOI: 10.3389/fendo.2022.827512] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/05/2022] [Indexed: 01/10/2023] Open
Abstract
PURPOSE The aim of this review is to assess the current evidence regarding the impact of relaxin on incidence of soft tissue hip injuries in women. METHODS A trained research librarian assisted with searches of PubMed, Embase, CINAHL, and SPORTDiscus, with a preset English language filter. The review was completed per the Joanna Briggs Institute (JBI) Manual for Evidence Synthesis methodology. Included studies required assessment of relaxin effects on musculoskeletal health, pelvic girdle stability, or hip joint structures in human subjects. Letters, texts, and opinion papers were excluded. RESULTS Our screen yielded 82 studies. Molecularly, relaxin activates matrix metalloproteinases (MMPs) including collagenases MMP-1/-13 and gelatinases MMP-2/-9 to loosen pelvic ligaments for parturition. However, relaxin receptors have also been detected in female periarticular tissues, such as the anterior cruciate ligament, which tears significantly more often during the menstrual cycle peak of relaxin. Recently, high concentrations of relaxin-activated MMP-9 receptors have been found on the acetabular labrum; their expression upregulated by estrogen. CONCLUSIONS Menstrual cycle peaks of relaxin activate MMPs, which locally degrade collagen and gelatine. Women have relaxin receptors in multiple joints including the hip and knee, and increased relaxin correlates with increased musculoskeletal injuries. Relaxin has paracrine effects in the female pelvis on ligaments adjacent to hip structures, such as acetabular labral cells which express high levels of relaxin-targeted MMPs. Therefore, it is imperative to investigate the effect of relaxin on the hip to determine if increased levels of relaxin are associated with an increased risk of acetabular labral tears.
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Affiliation(s)
- Emily A. Parker
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
- *Correspondence: Emily A. Parker,
| | - Alex M. Meyer
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Jessica E. Goetz
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
- Orthopedic Biomechanics Laboratories, Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Michael C. Willey
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
| | - Robert W. Westermann
- Department of Orthopedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, United States
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Seow KM, Liu PS, Chen KH, Chen CW, Chen LK, Ho CH, Hwang JL, Wang PH, Juan CC. Cysteine-Cysteine Motif Chemokine Receptor 5 Expression in Letrozole-Induced Polycystic Ovary Syndrome Mice. Int J Mol Sci 2021; 23:ijms23010134. [PMID: 35008567 PMCID: PMC8745167 DOI: 10.3390/ijms23010134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Revised: 12/20/2021] [Accepted: 12/20/2021] [Indexed: 12/27/2022] Open
Abstract
Polycystic ovary syndrome (PCOS), which affects 5–10% of women of reproductive age, is associated with reproductive and metabolic disorders, such as chronic anovulation, infertility, insulin resistance, and type 2 diabetes. However, the mechanism of PCOS is still unknown. Therefore, this study used a letrozole-exposed mouse model in which mice were orally fed letrozole for 20 weeks to investigate the effects of letrozole on the severity of reproductive and metabolic consequences and the expression of cysteine–cysteine motif chemokine receptor 5 (CCR5) in letrozole-induced PCOS mice. The letrozole-treated mice showed a disrupted estrous cycle and were arrested in the diestrus phase. Letrozole treatment also increased plasma testosterone levels, decreased estradiol levels, and caused multicystic follicle formation. Furthermore, histological analysis of the perigonadal white adipose tissue (pgWAT) showed no significant difference in the size and number of adipocytes between the letrozole-treated mice and the control group. Further, the letrozole-treated mice demonstrated glucose intolerance and insulin resistance during oral glucose and insulin tolerance testing. Additionally, the expression of CCR5 and cysteine-cysteine motif ligand 5 (CCL5) were significantly higher in the pgWAT of the letrozole-treated mice compared with the control group. CCR5 and CCL5 were also significantly correlated with the homeostasis model assessment of insulin resistance (HOMA-IR). Finally, the mechanisms of insulin resistance in PCOS may be caused by an increase in serine phosphorylation and a decrease in Akt phosphorylation.
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Affiliation(s)
- Kok-Min Seow
- Department of Obstetrics and Gynecology, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei 111, Taiwan; (K.-M.S.); (J.-L.H.)
- Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-H.H.); (P.-H.W.)
| | - Pin-Shiou Liu
- Institute of Physiology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (P.-S.L.); (L.-K.C.)
| | - Kuo-Hu Chen
- Department of Obstetrics and Gynecology, Taipei Tzu-Chi Hospital, The Buddhist Tzu-Chi Medical Foundation, Taipei 231, Taiwan;
- School of Medicine, Buddhist Tzu-Chi University, Hualien 970, Taiwan
| | - Chien-Wei Chen
- College of Human Development and Health, National Taipei University of Nursing and Health Sciences, Taipei 112, Taiwan;
| | - Luen-Kui Chen
- Institute of Physiology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (P.-S.L.); (L.-K.C.)
| | - Chi-Hong Ho
- Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-H.H.); (P.-H.W.)
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei 112, Taiwan
| | - Jiann-Loung Hwang
- Department of Obstetrics and Gynecology, Shin-Kong Wu Ho-Su Memorial Hospital, Taipei 111, Taiwan; (K.-M.S.); (J.-L.H.)
- Department of Obstetrics and Gynecology, Taipei Medical University, Taipei 110, Taiwan
- Taipei IVF, Taipei 104, Taiwan
| | - Peng-Hui Wang
- Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (C.-H.H.); (P.-H.W.)
- Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan
- Female Cancer Foundation, Taipei 104, Taiwan
- Department of Medical Research, China Medical University Hospital, Taichung 404, Taiwan
| | - Chi-Chang Juan
- Institute of Physiology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan; (P.-S.L.); (L.-K.C.)
- Department of Medical Research, Taipei Veterans General Hospital, Taipei 112, Taiwan
- Correspondence: ; Tel.: +886-2-2826-7000
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Grin L, Vo KCT, Sato Y, Mizrachi Y, Kohara M, Sankai T, Kawamura K. Ageing and chronic disease-related changes in the morphometric characteristics of ovarian follicles in cynomolgus monkeys (Macaca fascicularis). Hum Reprod 2021; 36:2732-2742. [PMID: 34411244 DOI: 10.1093/humrep/deab191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 06/15/2021] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION How is the localisation of ovarian follicles affected by ageing and chronic diseases? SUMMARY ANSWER Ovarian follicles shift deeper towards the medulla, due to thickening of the tunica albuginea (TA), with ageing and some major common chronic diseases. WHAT IS KNOWN ALREADY The ovary undergoes morphological and functional changes with ageing. The follicular pool follows these changes with alterations in the amount and distribution of residual follicles. Diseases causing a chronic inflammatory process are associated with morphological changes and impaired ovarian function. STUDY DESIGN, SIZE, DURATION We conducted a cross-sectional study, examining 90 ovaries from 90 female monkeys. The samples were collected from April 2018 to March 2019 at Tsukuba Primate Research Center in National Institutes of Biomedical Innovation, Health and Nutrition, Japan. PARTICIPANTS/MATERIALS, SETTING, METHODS Ovarian samples were obtained from cynomolgus monkeys that died from natural causes or were euthanised. Ovarian sections were stained with haematoxylin and eosin (H&E) for histological analyses. In ovarian sections from 64 female macaques aged 0-25 years, a total of 13 743 follicles at different developmental stages (primordial, intermediary, primary, early secondary and late secondary) were assessed to determine the depth of each follicle from the outer surface of the ovarian cortex to the far end of the follicle, by using a digital imaging software. TA thickness was measured as sum of basal membrane and tunica collagen layer for each ovary under H&E staining. To explore the possibility of age-related trends in ovarian morphometric characteristics, samples were divided into four different age groups (0-3 years (pre-menarche), 4-9 years, 10-14 years and 15-20 years). To evaluate the effect of common chronic diseases on ovarian morphometric characteristics, macaques with diabetes mellitus (DM) (n = 10), endometriosis (n = 8) or inflammatory bowel disease (IBD) (n = 8) were compared to age-matched controls without chronic diseases. MAIN RESULTS AND THE ROLE OF CHANCE Ovarian morphometric analysis revealed that the relative location of follicles became deeper in all age groups according to development of follicles (P < 0.05). Total follicle distance from the ovarian surface was increased with ageing (P < 0.05). In a sub-analysis according to developmental stage, only primordial and intermediary follicles were localised deeper with increasing age (P < 0.05). TA thickness was also increased with ageing (P < 0.05). The localisation of the total number of follicles became deeper in ovaries from monkeys with DM, endometriosis or IBD as compared to the control group (P < 0.05). With DM, analysis of follicles distance at almost each developmental stage was significantly deeper compared to controls (P < 0.05) with the exception of early secondary follicles. With endometriosis, follicles at primary and early and late secondary stages were significantly deeper compared to controls (P < 0.05). Also with IBD, follicles at primary and early and late secondary follicles were significantly deeper compared to controls (P < 0.001). The TA was thicker with DM and endometriosis compared to controls (P < 0.05), but not with IBD (P = 0.16). LARGE SCALE DATA NA. LIMITATIONS, REASONS FOR CAUTION Two-dimensional histology was used to assess follicle localisation. The possibility of minimal variations between the measured distance to the actual distance in a spherical structure cannot be excluded. Additionally, the severity of disease was not assessed. WIDER IMPLICATIONS OF THE FINDINGS This study is the first step towards enhancing our understanding of how ageing and chronic diseases affect the relative localisation of dormant and developing follicles. These observations, combined with possible future human studies, may have managerial implications in the field of fertility preservation and other conditions involving ovarian tissue cryopreservation. STUDY FUNDING/COMPETING INTEREST(S) The present work was supported by the Grant-in-Aid for Scientific Research B (19H03801) (to K.K.), Challenging Exploratory Research (18K19624), Japan Agency for Medical Research and Development, Mochida Memorial Foundation for Medical and Pharmaceutical Research, Takeda Science Foundation and Naito Foundation (to K.K.). All authors have no conflicts of interest directly relevant to the content of this article.
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Affiliation(s)
- L Grin
- Advanced Reproductive Medicine Research Center, Department of Obstetrics and Gynecology, International University of Health and Welfare School of Medicine, Chiba, Japan.,Assisted Reproductive Technology Unit, Department of Obstetrics and Gynecology, Barzilai University Medical Center, Ben-Gurion University of the Negev, Ashkelon Campus, Ashkelon, Israel
| | - K C T Vo
- Graduate School of Medicine, International University of Health and Welfare School of Medicine, Chiba, Japan
| | - Y Sato
- Advanced Reproductive Medicine Research Center, Department of Obstetrics and Gynecology, International University of Health and Welfare School of Medicine, Chiba, Japan
| | - Y Mizrachi
- Department of Obstetrics & Gynecology, Edith Wolfson Medical Center, Holon, Affiliated With Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - M Kohara
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Department of Health and Nutrition, Tsukuba-shi, Ibaraki, Japan
| | - T Sankai
- Tsukuba Primate Research Center, National Institutes of Biomedical Innovation, Department of Health and Nutrition, Tsukuba-shi, Ibaraki, Japan
| | - K Kawamura
- Advanced Reproductive Medicine Research Center, Department of Obstetrics and Gynecology, International University of Health and Welfare School of Medicine, Chiba, Japan.,Graduate School of Medicine, International University of Health and Welfare School of Medicine, Chiba, Japan
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Rushton DH, Westgate GE, Van Neste DJ. Following historical "tracks" of hair follicle miniaturisation in patterned hair loss: Are elastin bodies the forgotten aetiology? Exp Dermatol 2021; 31:102-109. [PMID: 34008225 PMCID: PMC9290669 DOI: 10.1111/exd.14393] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 01/04/2023]
Abstract
Pattern hair loss (PHL) is a chronic regressive condition of the scalp, where follicular miniaturisation and decreased scalp hair coverage occurs in affected areas. In all PHL cases, there is a measurable progressive shortening of the terminal hair growth duration, along with reduced linear growth rates. In both genders, PHL initially shows an increase in short telogen hairs ≤30 mm in length, reflecting a cycle completion of under 6 months in affected terminal hair follicles. To understand the miniaturisation process, we re-examine the dynamics of miniaturisation and ask the question, "why do miniaturised hair follicles resist treatment?" In the light of recent developments in relation to hair regeneration, we looked back in the older literature for helpful clues "lost to time" and reprise a 1978 Hermann Pinkus observation of an array of elastin deposits beneath the dermal papilla following subsequent anagen/telogen transitions in male balding, originally described by Arao and Perkins who concluded that these changes provide a "morphologic marker of the entire biologic process in the balding scalp." Thus, we have reviewed the role of the elastin-like bodies in hair pathology and we propose that alterations in elastin architecture may contribute to the failure of vellus-like hair reverting back to their terminal status and may indicate a new area for therapeutic intervention.
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Affiliation(s)
- D Hugh Rushton
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, Portsmouth, UK
| | - Gillian E Westgate
- Centre for Skin Sciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
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D Prabhu Y, Bhati M, Vellingiri B, Valsala Gopalakrishnan A. The effect of γ-linolenic acid on Polycystic Ovary Syndrome associated Focal Segmental Glomerulosclerosis via TGF-β pathway. Life Sci 2021; 276:119456. [PMID: 33811895 DOI: 10.1016/j.lfs.2021.119456] [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: 01/26/2021] [Revised: 03/21/2021] [Accepted: 03/29/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND In recent years, female infertility from Polycystic Ovary Syndrome (PCOS) has gained scientific interest. PCOS alters the metabolic and endocrine functioning in females. The elevation in androgens can damage the androgen receptors present on the kidney giving rise to renal disorders like Focal Segmental Glomerulosclerosis (FSGS). Transforming Growth Factor Beta (TGF-β) in the ovary is activated by activin for Follicle Stimulating Hormone (FSH) secretion and in the kidney by thrombospondin 1 (TSP1) for cell growth and apoptosis. Studies show that gamma-linolenic acid (GLA) effectively treats breast cancer, eczema, inflammatory conditions and PCOS. AIM The study aimed to find out the possibility of FSGS development in PCOS and to understand the effect of GLA on FSGS via the TGF-β pathway. METHOD To carry out the study, the dehydroepiandrosterone (DHEA) induced PCOS model was used. Three groups namely vehicle control, DHEA, and DHEA+GLA, were used with six animals in each. TGF-β1, TGF-β2, and TSP1 genes were studied using real-time PCR. RESULTS The study showed an increase in the level of renal fibrosis biomarker, TSP1, in the DHEA group, which was further decreased by an anti-inflammatory agent, GLA. The TGF-β1 and TGF-β2 genes associated with the TGF-β pathway were seen to be increased in DHEA-induced PCOS rats which showed a possible relation between the two conditions. CONCLUSION The study shows a possible development of renal fibrosis in the DHEA-induced PCOS model. The GLA might act as a ligand to regulate TGF-β signaling in glomerulosclerosis in a DHEA-induced PCOS model.
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Affiliation(s)
- Yogamaya D Prabhu
- Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu 632014, India
| | - Monica Bhati
- Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu 632014, India
| | - Balachandar Vellingiri
- Human Molecular Cytogenetics and Stem Cell Laboratory, Department of Human Genetics and Molecular Biology, Bharathiar University, Coimbatore 641 046, Tamil Nadu, India
| | - Abilash Valsala Gopalakrishnan
- Department of Biomedical Sciences, School of Bio Sciences and Technology, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu 632014, India.
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Jafari Khorchani M, Zal F, Neisy A. The phytoestrogen, quercetin, in serum, uterus and ovary as a potential treatment for dehydroepiandrosterone-induced polycystic ovary syndrome in the rat. Reprod Fertil Dev 2021; 32:313-321. [PMID: 31661670 DOI: 10.1071/rd19072] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 07/01/2019] [Indexed: 12/14/2022] Open
Abstract
The exact mechanisms of polycystic ovary syndrome (PCOS) are unknown and there is no effective cure for the disease. The aim of this study was to evaluate the alterations in serum oestradiol and adiponectin levels and in the expression of some important genes in the uterine and ovarian tissues of PCOS rats. The therapeutic effect of quercetin on PCOS was also assessed. Rats were divided into five groups: control, ethanol, quercetin (Q), PCOS and PCOS+Q. After 30 days of oral treatments, the rats' ovaries and uteri were removed and nesfatin-1, aromatase and adipoR1 expressions were quantified with real-time polymerase chain reaction. Serum adiponectin and oestradiol levels were evaluated using enzyme-linked immunosorbent assay technique. The results of this study showed that expression of nesfatin-1 and adipoR1 genes and adiponectin serum levels decreased in the PCOS rats, but aromatase expression and oestradiol level increased. Treatment with quercetin increased the adiponectin level and expression of adipoR1 and nesfatin-1 and decreased both the expression of aromatase and the oestradiol level. Quercetin improved PCOS by phytoestrogenic effects and mimicking oestrogen's function. Quercetin also affects important factors in both the uterus and ovary and could improve the obesity and the diabetic and infertility symptoms of PCOS.
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Affiliation(s)
- Majid Jafari Khorchani
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794, Iran
| | - Fatemeh Zal
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794, Iran; and Infertility Research Center, Shiraz University of Medical Sciences, Shiraz 7134845794, Iran; and Corresponding author.
| | - Asma Neisy
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794, Iran
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13
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Retinoic acid and fibroblast growth factor-2 play a key role on modulation of sex hormones and apoptosis in a mouse model of polycystic ovary syndrome induced by estradiol valerate. Taiwan J Obstet Gynecol 2020; 59:882-890. [PMID: 33218406 DOI: 10.1016/j.tjog.2020.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2020] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE The main goal of the present study is to investigate the effects of retinoic acid and fibroblast growth factor-2 on serum levels of FSH and LH, histology, and apoptosis in the mouse model of Poly Cystic Ovary Syndrome (PCOS). MATERIALS AND METHODS 80 female NMRI mice have been randomly divided into eight groups. Group 1 received normal saline as a control, and Group 2 received estradiol valerate (EV) at 4 mg/100 g of body weight. Moreover, Groups 3-4 were administered with RA (a dose of 0.05 μg/μl) and FGF2 (a dose of 0.01 μg/kg), respectively. Groups 5 and 6 respectively received the EV plus the RA (0.05 μg/μl) and FGF2 (0.01 μg/kg). Group 7 received the RA and FGF2 at doses corresponding to healthy mice, and Group 8 received the EV plus the RA + FGF2 (similar to previous doses). RA and FGF2 were injected three times per week for four weeks. Finally, histological and immunohistological parameters of the ovary were evaluated. RESULTS The study revealed that both single and combined injection of fibroblast growth factor-2 (FGF2) and retinoic acid (RA) in groups 5, 6, and 8 significantly reduced follicular diameters compared to group 2. Measurements confirmed that simultaneous injection of RA and FGF2 into polycystic mice significantly increased antral follicles, corpus luteum (CL), epithelial thickness, and oocyte diameter as well as decreased cystic follicles. Positive TUNEL cells that were considerably increased in the antral follicle of group 2 significantly decreased in the RA and FGF2 recipient groups, either alone or in combination. Besides, the injection of FGF2 increased preantral follicles and CL. CONCLUSION The findings of the present investigation reveal that injection of RA and FGF2 has both protective and ameliorative effects that can promise new therapies for women with PCOS.
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Safaei Z, Bakhshalizadeh SH, Nasr Esfahani MH, Akbari Sene A, Najafzadeh V, Soleimani M, Shirazi R. Effect of Vitamin D3 on Mitochondrial Biogenesis in Granulosa Cells Derived from Polycystic Ovary Syndrome. INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2020; 14:143-149. [PMID: 32681627 PMCID: PMC7382678 DOI: 10.22074/ijfs.2020.6077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 01/05/2020] [Indexed: 12/15/2022]
Abstract
Background Polycystic ovary syndrome (PCOS) is an endocrine disorder diagnosed by anovulation hyperandro-
genism. Hyperandrogenism increases apoptosis, which will eventually disturb follicular growth in PCOS patients.
Since mitochondria regulate apoptosis, they might be affected by high incidence of follicular atresia. This may cause
infertility. Since vitamin D3 has been shown to improve the PCOS symptoms, the aim of study was to investigate the
effects vitamin D3 on mtDNA copy number, mitochondrial biogenesis, and membrane integrity of granulosa cells in
a PCOS-induced mouse model. Materials and Methods In this experimental study, the PCOS mouse model was induced by dehydroepiandrosterone
(DHEA). Granulosa cells after identification by follicle-stimulating hormone receptor (FSHR) were cultured in three
groups: 1. granulosa cells treated with vitamin D3 (100 nM for 24 hours), 2. granulosa cells without any treatments,
3. Non-PCOS granulosa cells (control group). Mitochondrial biogenesis gene (TFAM) expression was compared
between different groups using real-time PCR. mtDNA copy number was also investigated by qPCR. The mitochon-
drial structure was evaluated by transmission electron microscopy (TEM). Hormonal levels were measured by an
enzymelinked immunosorbent assay (ELISA) kit. Results The numbers of pre-antral and antral follicles increased in PCOS group in comparison with the non-PCOS
group. Mitochondrial biogenesis genes were downregulated in granulosa cells of PCOS mice when compared to the
non-PCOS granulosa cells. However, treatment with vitamin D3 increased mtDNA expression levels of these genes
compared to PCOS granulosa cells with no treatments. Most of the mitochondria in the PCOS group were spherical
with almost no cristae. Our results showed that in the PCOS group treated with vitamin D3, the mtDNA copy number
increased significantly in comparison to PCOS granulosa cells with no treatments. Conclusion According to this study, we can conclude, vitamin D3 improves mitochondrial biogenesis and membrane
integrity, mtDNA copy number in granulosa cells of PCOS mice which might improve follicular development and
subsequently oocyte quality.
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Affiliation(s)
- Zahra Safaei
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - S Habnam Bakhshalizadeh
- Reproductive Development, Murdoch Children's Research Institute, Melbourne, Victoria, Australia.,Department of Paediatrics, University of Melbourne, Melbourne, Victoria, Australia
| | - Mohammad Hossein Nasr Esfahani
- Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Azadeh Akbari Sene
- Shahid Akbarabadi Clinical Research Development Unit (SHACRDU), Iran University of Medical Sciences (IUMS), Tehran, Iran
| | - Vahid Najafzadeh
- Department of Veterinary and Animal Sciences, Anatomy and Biochemistry Section, University of Copenhagen, Copenhagen, Denmark
| | - Mansoureh Soleimani
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Reza Shirazi
- Department of Anatomical Sciences, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. Electronic Address: .,Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran.,Department of Health and Medical Sciences, Faculty of Health, Arts and Design, Swinburne University, Hawthorn, Melbourne, Australia
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15
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Kuyucu Y, Sencar L, Tap Ö, Mete UÖ. Investigation of the effects of vitamin D treatment on the ovarian AMH receptors in a polycystic ovary syndrome experimental model: an ultrastructural and immunohistochemical study. Reprod Biol 2020; 20:25-32. [DOI: 10.1016/j.repbio.2020.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/02/2019] [Accepted: 01/01/2020] [Indexed: 12/20/2022]
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16
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Gill V, Kumar V, Singh K, Kumar A, Kim JJ. Advanced Glycation End Products (AGEs) May Be a Striking Link Between Modern Diet and Health. Biomolecules 2019; 9:biom9120888. [PMID: 31861217 PMCID: PMC6995512 DOI: 10.3390/biom9120888] [Citation(s) in RCA: 113] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 12/12/2022] Open
Abstract
The Maillard reaction is a simple but ubiquitous reaction that occurs both in vivo and ex vivo during the cooking or processing of foods under high-temperature conditions, such as baking, frying, or grilling. Glycation of proteins is a post-translational modification that forms temporary adducts, which, on further crosslinking and rearrangement, form permanent residues known as advanced glycation end products (AGEs). Cooking at high temperature results in various food products having high levels of AGEs. This review underlines the basis of AGE formation and their corresponding deleterious effects on the body. Glycated Maillard products have a direct association with the pathophysiology of some metabolic diseases, such as diabetes mellitus type 2 (DM2), acute renal failure (ARF), Alzheimer’s disease, dental health, allergies, and polycystic ovary syndrome (PCOS). The most glycated and structurally abundant protein is collagen, which acts as a marker for diabetes and aging, where decreased levels indicate reduced skin elasticity. In diabetes, high levels of AGEs are associated with carotid thickening, ischemic heart disease, uremic cardiomyopathy, and kidney failure. AGEs also mimic hormones or regulate/modify their receptor mechanisms at the DNA level. In women, a high AGE diet directly correlates with high levels of androgens, anti-Müllerian hormone, insulin, and androstenedione, promoting ovarian dysfunction and/or infertility. Vitamin D3 is well-associated with the pathogenesis of PCOS and modulates steroidogenesis. It also exhibits a protective mechanism against the harmful effects of AGEs. This review elucidates and summarizes the processing of infant formula milk and the associated health hazards. Formulated according to the nutritional requirements of the newborn as a substitute for mother’s milk, formula milk is a rich source of primary adducts, such as carboxy-methyl lysine, which render an infant prone to inflammation, dementia, food allergies, and other diseases. We therefore recommend that understanding this post-translational modification is the key to unlocking the mechanisms and physiology of various metabolic syndromes.
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Affiliation(s)
- Vidhu Gill
- Central Research Station, Subharti Medical College, Swami Vivekanand Subharti University, Meerut 250002, India; (V.G.); (K.S.)
| | - Vijay Kumar
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
- Correspondence: (V.K.); (J.-J.K.); Tel.: +82-53-810-3027 or +82-10-9668-3464 (J.-J.K.); Fax: +82-53-801-3027 (J.-J.K.)
| | - Kritanjali Singh
- Central Research Station, Subharti Medical College, Swami Vivekanand Subharti University, Meerut 250002, India; (V.G.); (K.S.)
| | - Ashok Kumar
- Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow 226014, India;
| | - Jong-Joo Kim
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
- Correspondence: (V.K.); (J.-J.K.); Tel.: +82-53-810-3027 or +82-10-9668-3464 (J.-J.K.); Fax: +82-53-801-3027 (J.-J.K.)
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17
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Neisy A, Zal F, Seghatoleslam A, Alaee S. Amelioration by quercetin of insulin resistance and uterine GLUT4 and ERα gene expression in rats with polycystic ovary syndrome (PCOS). Reprod Fertil Dev 2019; 31:315-323. [PMID: 30103849 DOI: 10.1071/rd18222] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 07/05/2018] [Indexed: 12/23/2022] Open
Abstract
Insulin resistance (IR) and infertility are two major complications of polycystic ovary syndrome (PCOS), which are the results of changes in certain parts of the reproductive and metabolic systems. We aimed to observe the effect of quercetin on dehydroepiandrosterone (DHEA)-induced PCOS and insulin resistance in rats. All animals were divided into five groups and DHEA was used to induce PCOS. Bodyweight and ovarian morphology of all groups were observed. Fasting blood glucose and insulin levels were analysed. The homeostasis model assessment of insulin resistance (HOMA-IR) method was used for IR level determination. The expression of oestrogen receptor α (ERα) and glucose transporter 4 (GLUT4) genes in the uterus was examined by real-time polymerase chain reaction. Liver hexokinase (HK) and glucokinase (GK) activity was determined using spectrophotometry. Quercetin significantly improved the IR state in PCOS rats. PCOS resulted in a decrease in liver GK and an increase in liver HK specific activity, whereas quercetin increased both liver HK and GK activity. Our data also showed a significant reduction in uterine ERα and GLUT4 expression in the PCOS group, which was increased by quercetin. A remarkable effect of quercetin was the intensive reduction of PCOS-IR and significant induction of uterine GLUT4 and ERα gene expression; it could thus be a possible effective treatment for PCOS and its complications, IR and infertility.
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Affiliation(s)
- Asma Neisy
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794 Iran
| | - Fatemeh Zal
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794 Iran
| | - Atefeh Seghatoleslam
- Biochemistry Department, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 7134845794 Iran
| | - Sanaz Alaee
- Reproductive Biology Department, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, 7134845794 Iran
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Divyashree S, Janhavi P, Ravindra P, Muthukumar S. Experimental models of polycystic ovary syndrome: An update. Life Sci 2019; 237:116911. [DOI: 10.1016/j.lfs.2019.116911] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/11/2019] [Accepted: 09/24/2019] [Indexed: 01/30/2023]
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Perturbed ovarian and uterine glucocorticoid receptor signaling accompanies the balanced regulation of mitochondrial function and NFκB-mediated inflammation under conditions of hyperandrogenism and insulin resistance. Life Sci 2019; 232:116681. [PMID: 31344428 DOI: 10.1016/j.lfs.2019.116681] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/16/2019] [Accepted: 07/21/2019] [Indexed: 11/23/2022]
Abstract
AIM This study aimed to determine whether glucocorticoid receptor (GR) signaling, mitochondrial function, and local inflammation in the ovary and uterus are intrinsically different in rats with hyperandrogenism and insulin resistance compared to controls. MAIN METHODS Female Sprague Dawley rats were exposed to daily injections of human chorionic gonadotropin and/or insulin. KEY FINDINGS In both the ovary and the uterus, decreased expression of the two GR isoforms was concurrent with increased expression of Fkbp51 but not Fkbp52 mRNA in hCG + insulin-treated rats. However, these rats exhibited contrasting regulation of Hsd11b1 and Hsd11b2 mRNAs in the two tissues. Further, the expression of several oxidative phosphorylation-related proteins decreased in the ovary and uterus following hCG and insulin stimulation, in contrast to increased expression of many genes involved in mitochondrial function and homeostasis. Additionally, hCG + insulin-treated rats showed increased expression of ovarian and uterine NFκB signaling proteins and Tnfaip3 mRNA. The mRNA expression of Il1b, Il6, and Mmp2 was decreased in both tissues, while the mRNA expression of Tnfa, Ccl2, Ccl5, and Mmp3 was increased in the uterus. Ovaries and uteri from animals co-treated with hCG and insulin showed increased collagen deposition compared to controls. SIGNIFICANCE Our observations suggest that hyperandrogenism and insulin resistance disrupt ovarian and uterine GR activation and trigger compensatory or adaptive effects for mitochondrial homeostasis, allowing tissue-level maintenance of mitochondrial function in order to limit ovarian and uterine dysfunction. Our study also suggests that hyperandrogenism and insulin resistance activate NFκB signaling resulting in aberrant regulation of inflammation-related gene expression.
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Merhi Z, Kandaraki EA, Diamanti-Kandarakis E. Implications and Future Perspectives of AGEs in PCOS Pathophysiology. Trends Endocrinol Metab 2019; 30:150-162. [PMID: 30712978 DOI: 10.1016/j.tem.2019.01.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 01/07/2019] [Accepted: 01/08/2019] [Indexed: 01/12/2023]
Abstract
Human, animal, and in vitro studies provide evidence that advanced glycation end-products (AGEs) may contribute to the pathogenesis of polycystic ovary syndrome (PCOS) and its metabolic and reproductive consequences. AGEs are able to induce, via activation of key intracellular signaling pathways, the generation of oxidative stress and proinflammatory cytokines, thus contributing to the adverse health impact of PCOS. This review presents the implications of AGEs in several disease pathophysiologies, including PCOS, as well as the cellular and systemic effects of AGEs on insulin resistance (IR), hyperandrogenemia, endoplasmic reticulum (ER) stress, hypoxia, and ovarian function. The gaps in our knowledge will serve as launching pad for future developments ranging from dietary and lifestyle changes to pharmaceutical interventions aiming at potential applications in women with PCOS.
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Affiliation(s)
- Zaher Merhi
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY, USA; Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Eleni A Kandaraki
- St Bartholomew's Hospital, Department of Endocrinology, London EC1A 7BE, UK
| | - Evanthia Diamanti-Kandarakis
- Medical School, University of Athens, 11527 Goudi, Athens, Greece; Endocrinology and Diabetes Department, Hygeia Hospital, 15123 Marousi, Athens, Greece
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21
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The use of dehydroepiandrosterone-treated rats is not a good animal model for the study of metabolic abnormalities in polycystic ovary syndrome. Taiwan J Obstet Gynecol 2018; 57:696-704. [DOI: 10.1016/j.tjog.2018.08.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2018] [Indexed: 11/18/2022] Open
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22
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Zhang C, Ma J, Wang W, Sun Y, Sun K. Lysyl oxidase blockade ameliorates anovulation in polycystic ovary syndrome. Hum Reprod 2018; 33:2096-2106. [DOI: 10.1093/humrep/dey292] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 09/20/2018] [Indexed: 01/05/2023] Open
Affiliation(s)
- Chuyue Zhang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R.China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, P.R.China
| | - Jin Ma
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R.China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, P.R.China
| | - Wangsheng Wang
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R.China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, P.R.China
| | - Yun Sun
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R.China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, P.R.China
| | - Kang Sun
- Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R.China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, P.R.China
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23
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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]
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24
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Kim EJ, Jang M, Choi JH, Park KS, Cho IH. An Improved Dehydroepiandrosterone-Induced Rat Model of Polycystic Ovary Syndrome (PCOS): Post-pubertal Improve PCOS's Features. Front Endocrinol (Lausanne) 2018; 9:735. [PMID: 30564195 PMCID: PMC6288467 DOI: 10.3389/fendo.2018.00735] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 11/19/2018] [Indexed: 11/13/2022] Open
Abstract
Complete animal models investigating the pathogenesis and treatment of polycystic ovarian syndrome (PCOS) are not completely established. Although dehydroepiandrosterone (DHEA)-induced pre-pubertal rat model for PCOS has been widely used, the model exhibits weaknesses such as decreased ovary weight. Here, we report an innovative DHEA-induced PCOS model that addresses limitations of the pre-pubertal model. The 21-day-old (pre-pubertal) and 42-day-old (post-pubertal) female rats were subcutaneously injected with DHEA (60 mg/kg body weight) daily for up to 20-30 days. The post-pubertal model showed a steady increase in ovary weight and the number of ovarian cysts as well as uterine weight and thickness, which may be key features of PCOS, compared with the pre-pubertal model. Therefore, a post-pubertal PCOS model induced by DHEA may be an improved model to investigate the etiology of PCOS and development of therapeutic interventions.
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Affiliation(s)
- Eun-Jeong Kim
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Minhee Jang
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Jong Hee Choi
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Kyoung Sun Park
- Department of Korean Medicine Obstetrics and Gynecology, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Ik-Hyun Cho
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
- Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
- *Correspondence: Ik-Hyun Cho
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Wang Z, Zhai D, Zhang D, Bai L, Yao R, Yu J, Cheng W, Yu C. Quercetin Decreases Insulin Resistance in a Polycystic Ovary Syndrome Rat Model by Improving Inflammatory Microenvironment. Reprod Sci 2016; 24:682-690. [DOI: 10.1177/1933719116667218] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Zhenzhi Wang
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
- Department of Traditional Chinese Gynecology, Pudong TCM Hospital, Shanghai, China
| | - Dongxia Zhai
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Danying Zhang
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Lingling Bai
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ruipin Yao
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Jin Yu
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Wen Cheng
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Chaoqin Yu
- Department of Traditional Chinese Gynecology, Changhai Hospital, Second Military Medical University, Shanghai, China
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Nikmard F, Hosseini E, Bakhtiyari M, Ashrafi M, Amidi F, Aflatoonian R. Effects of melatonin on oocyte maturation in PCOS mouse model. Anim Sci J 2016; 88:586-592. [PMID: 27530294 DOI: 10.1111/asj.12675] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 04/28/2016] [Accepted: 05/30/2016] [Indexed: 10/21/2022]
Abstract
The purpose of oocyte in vitro maturation is generation of mature oocytes that could support future development. Efforts have been made to enhance oocyte developmental competence by developing optimal culture conditions. The present study is conducted to determine melatonin effects on quality of polycystic ovarian syndrome (PCOS) oocytes when it has been added during in vitro maturation, and immature oocytes were cultured in defined conditioned medium with and without different melatonin concentrations. Melatonin could significantly improve nuclear maturation of PCOS oocytes (81.1% vs. 56.3%, P < 0.05 were achieved with 10-6 mol/L concentration). Cleavage rate was significantly higher in 10-5 mol/L concentration compared to untreated oocytes in PCOS (54% vs. 35%, respectively) and it was significantly higher with 10-6 mol/L concentration in the control group, 55% versus 38%, compared to untreated oocytes. This study showed that melatonin has the potential to induce oocyte nuclear maturation and guarantee fertilization potential. © 2016 Japanese Society of Animal Science.
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Affiliation(s)
- Fatemeh Nikmard
- Anatomy Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Elham Hosseini
- Anatomy Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mehrdad Bakhtiyari
- Anatomy Department, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.,Cellular and Molecular Research Center, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Ashrafi
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute, ACECR, Tehran, Iran
| | - Fardin Amidi
- Anatomy Department, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Aflatoonian
- Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute, ACECR, Tehran, Iran
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Fang Y, Chang HM, Cheng JC, Klausen C, Leung PCK, Yang X. Transforming growth factor-β1 increases lysyl oxidase expression by downregulating MIR29A in human granulosa lutein cells. Reproduction 2016; 152:205-13. [PMID: 27335131 DOI: 10.1530/rep-16-0144] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 06/17/2016] [Indexed: 12/28/2022]
Abstract
Lysyl oxidase (LOX), a key enzyme in the formation and stabilization of the extracellular matrix, is expressed in granulosa cells and plays a critical role in the regulation of granulosa cell differentiation, oocyte maturation and ovulation. To date, the regulation of LOX expression in human granulosa cells remains largely unknown. In this study, using primary and immortalized human granulosa lutein cells, we demonstrated that transforming growth factor (TGF)-β1 (TGFB1) upregulated LOX expression and downregulated microRNA-29a (MIR29A) expression via a TGF-β type I receptor-mediated signaling pathway. Additionally, we showed that MIR29A downregulated the expression of LOX in both types of cells. Furthermore, the downregulation of MIR29A contributed to the TGFB1-induced increase in LOX expression because the inhibition of MIR29A with a MIR29A inhibitor not only reversed the MIR29A-induced downregulation of LOX but also enhanced the TGFB1-induced upregulation of LOX. Our findings suggest that TGFB1 and MIR29A may play essential roles in the regulation of extracellular matrix remodeling during the periovulatory phase.
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Affiliation(s)
- Ying Fang
- Department of Human Reproductive MedicineBeijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China Department of Obstetrics and GynaecologyChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hsun-Ming Chang
- Department of Obstetrics and GynaecologyChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jung-Chien Cheng
- Department of Obstetrics and GynaecologyChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christian Klausen
- Department of Obstetrics and GynaecologyChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Peter C K Leung
- Department of Obstetrics and GynaecologyChild & Family Research Institute, University of British Columbia, Vancouver, British Columbia, Canada
| | - Xiaokui Yang
- Department of Human Reproductive MedicineBeijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China
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28
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Early ovarian follicular development in prepubertal Wistar rats acutely exposed to androgens. J Dev Orig Health Dis 2016; 7:384-90. [DOI: 10.1017/s2040174416000222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Androgens may directly modulate early ovarian follicular development in preantral stages and androgen excess before puberty may disrupt this physiological process. Therefore, the aim of this study was to investigate the dynamics of follicular morphology and circulating androgen and estradiol levels in prepubertal Wistar rats acutely exposed to androgens. Prepubertal female Wistar rats were distributed into three groups: control, equine chorionic gonadotropin (eCG) intervention and eCG plus dehydroepiandrosterone (DHEA) intervention (eCG+DHEA). Serum DHEA, testosterone and estradiol levels were determined, and ovarian morphology and morphometry were assessed. The eCG+DHEA group presented increased serum estradiol and testosterone levels as compared with the control group (P<0.01), and higher serum DHEA concentration v. the eCG-only and control groups (P<0.01). In addition, the eCG+DHEA group had a higher number of, and larger-sized, primary and secondary follicles as compared with the control group (P<0.05). The eCG group presented intermediate values for number and size of primary and secondary follicles, without significant differences as compared with the other two groups. The number of antral follicles was higher in the eCG+DHEA and eCG groups v. controls (P<0.05). The number of primordial, atretic and cystic follicles were similar in all groups. In conclusion, the present experimental model using an acute eCG+DHEA intervention was useful to investigate events involved in initial follicular development under hyperandrogenic conditions, and could provide a reliable tool to study defective follicular development with possible deleterious reproductive consequences later in life.
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Sun L, Ji C, Jin L, Bi Y, Feng W, Li P, Shen S, Zhu D. Effects of Exenatide on Metabolic Changes, Sexual Hormones, Inflammatory Cytokines, Adipokines, and Weight Change in a DHEA-Treated Rat Model. Reprod Sci 2016; 23:1242-9. [DOI: 10.1177/1933719116635278] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Lingjun Sun
- Department of Radiology, Sixth People’s Hospital affiliated to Shanghai Jiaotong University, Shanghai, China
| | - Cheng Ji
- Department of Pharmacy, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Lu Jin
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Yan Bi
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Wenhuan Feng
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Ping Li
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Shanmei Shen
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
| | - Dalong Zhu
- Department of Endocrinology, Drum Tower Hospital affiliated to Nanjing University Medical School, Nanjing, China
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Tessaro I, Modina SC, Franciosi F, Sivelli G, Terzaghi L, Lodde V, Luciano AM. Effect of oral administration of low-dose follicle stimulating hormone on hyperandrogenized mice as a model of polycystic ovary syndrome. J Ovarian Res 2015; 8:64. [PMID: 26437930 PMCID: PMC4594749 DOI: 10.1186/s13048-015-0192-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/29/2015] [Indexed: 11/20/2022] Open
Abstract
Background Polycystic Ovary Syndrome (PCOS) is a widespread reproductive disorder characterized by a disruption of follicular growth and anovulatory infertility. In women with PCOS, follicular growth and ovulation can be induced by subcutaneous injections of low doses of follicle stimulating hormone (FSH). The aim of this study was to determine the effect of oral administration of recombinant human FSH (rhFSH) on follicle development in a PCOS murine model. Moreover, since it is unlikely that intact rhFSH is present into the circulation after oral administration, the biological activity of a peptide fragment, derived from the predicted enzymatic cleavage sites with the FSH molecule, was investigated in vitro on cumulus-enclosed oocytes (COCs). Methods Female peripubertal mice were injected with dehydroepiandrosterone (DHEA) diluted in sesame oil for 20 consecutive days and orally treated with a saline solution of rhFSH. A control group received only sesame oil and saline solution. At the end of treatments, blood was analyzed for hormone concentrations and ovaries were processed for morphological analysis. The presumptive bioactive peptide was added during in vitro maturation of bovine COCs and the effects on cumulus expansion and on maturation rate were evaluated. Results DHEA treatment increased serum levels of testosterone, estradiol and progesterone as well as the percentage of cystic follicles. Orally administered rhFSH restored estradiol level and reduced the percentage of cystic follicles. Despite these results indicating a reduction of the severity of PCOS in the mouse model, the presumptive bioactive peptide did not mimic the effect of rhFSH and failed to induce bovine cumulus expansion and oocyte maturation in vitro. Conclusions Although further studies are needed, the present data supports the concept that orally administrated FSH could attenuate some of the characteristic of PCOS in the mouse model. Electronic supplementary material The online version of this article (doi:10.1186/s13048-015-0192-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Irene Tessaro
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Silvia C Modina
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy. .,Interdepartmental Research Centre for the Study of Biological Effects of Nano-concentrations (CREBION), Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Federica Franciosi
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Giulia Sivelli
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Laura Terzaghi
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Valentina Lodde
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
| | - Alberto M Luciano
- Reproductive and Developmental Biology Laboratory, Department of Health, Animal Science and Food Safety, Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy. .,Interdepartmental Research Centre for the Study of Biological Effects of Nano-concentrations (CREBION), Università degli Studi di Milano, Via Celoria 10, Milan, 20133, Italy.
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Abstract
Androgens mediate their actions via the androgen receptor (AR), a member of the nuclear receptor superfamily. AR-mediated androgen action is essential in male reproductive development and function; however, only in the last decade has the suspected but unproven role for AR-mediated actions in female reproduction been firmly established. Deciphering the specific roles and precise pathways by which AR-mediated actions regulate ovarian function has been hindered by confusion on how to interpret results from pharmacological studies using androgens that can be converted into oestrogens, which exert actions via the oestrogen receptors. The generation and analysis of global and cell-specific femaleArknockout mouse models have deduced a role for AR-mediated actions in regulating ovarian function, maintaining female fertility, and have begun to unravel the mechanisms by which AR-mediated androgen actions regulate follicle health, development and ovulation. Furthermore, observational findings from human studies and animal models provide substantial evidence to support a role for AR-mediated effects not only in normal ovarian function but also in the development of the frequent ovarian pathological disorder, polycystic ovarian syndrome (PCOS). This review focuses on combining the findings from observational studies in humans, pharmacological studies and animal models to reveal the roles of AR-mediated actions in normal and pathological ovarian function. Together these findings will enable us to begin understanding the important roles of AR actions in the regulation of female fertility and ovarian ageing, as well as providing insights into the role of AR actions in the androgen-associated reproductive disorder PCOS.
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Zhu G, Jiang Y. Polymorphism, genetic effect and association with egg production traits of chicken matrix metalloproteinases 9 promoter. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 27:1526-31. [PMID: 25358310 PMCID: PMC4213695 DOI: 10.5713/ajas.2014.14209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/05/2014] [Accepted: 07/17/2014] [Indexed: 11/27/2022]
Abstract
Matrix metalloproteinases (MMP) are key enzymes involved in cell and tissue remodeling during ovarian follicle development and ovulation. The control of MMP9 transcription in ovarian follicles occurs through a core promoter region (−2,400 to −1,700 bp). The aim of this study was to screen genetic variations in the core promoter region and examine MMP9 transcription regulation and reproduction performance. A single cytosine deletion/insertion polymorphism was found at −1954 C+/C−. Genetic association analysis indicated significant correlation between the deletion genotype (C−) with total egg numbers at 28 weeks (p = 0.031). Furthermore, luciferase-reporter assay showed the deletion genotype (C−) had significantly lower promoter activity than the insertion genotype (C+) in primary granulosa cells (p<0.01). Therefore, the identified polymorphism could be used for marker-assisted selection to improve chicken laying performance.
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Affiliation(s)
- Guiyu Zhu
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China ; Department of Biology Science and Technology, Taishan University, Taian 271021, China
| | - Yunliang Jiang
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Taian 271018, China
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Ikeda K, Baba T, Morishita M, Honnma H, Endo T, Kiya T, Saito T. Long-term treatment with dehydroepiandrosterone may lead to follicular atresia through interaction with anti-Mullerian hormone. J Ovarian Res 2014; 7:46. [PMID: 24851135 PMCID: PMC4029985 DOI: 10.1186/1757-2215-7-46] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Accepted: 04/24/2014] [Indexed: 11/15/2022] Open
Abstract
Background Hyperandrogenism is the primary manifestation of polycystic ovary syndrome (PCOS), which appears to be caused by excess exposure to androgen. As such, androgenized animal models have been developed and investigated to study the etiology of PCOS. Anti-Mullerian hormone (AMH) is known to be associated with follicle growth, and its levels are two to three times higher in women with PCOS than in those with normal ovaries. We studied how duration of androgen administration affects folliculogenesis and AMH expression. Methods We divided 30 immature (3-week-old) Sprague Dawley rats into six groups. Three groups were injected each evening with dehydroepiandrosterone (DHEA) (6 mg/100 g body weight/0.2 ml sesame oil) for 7, 15 or 30 days, respectively. The three control groups were injected with 0.2 ml of sesame oil for the corresponding lengths of time. Resected ovaries were sectioned and examined to determine follicle numbers at each developmental stage, and immunostained to assess AMH expression. Results On day 7, follicle numbers and AMH expression levels at each developmental stage of follicle growth were similar in the respective control and DHEA groups. On day 15, the total follicle number (P = 0.041), the percentage of primordial follicles (P = 0.039) and AMH expression were significantly greater in the DHEA than the control group. On day 30, the percentages of primordial (P = 0.005), primary (P = 0.0002) and atretic (P = 0.03) follicles were significantly greater in the DHEA group, whereas the percentage of intermediary follicles (early pre-antral, late preantral, and early antral follicles) was significantly lower in the DHEA group (P = <0.0001). AMH expression in DHEA-treated rats on day 30 was seen exclusively in the primordial (P = 0.0413) and late antral follicles (p = 0.028). Conclusions Androgen administration increases AMH production in a process that regulates the growth of primordial follicles. That is, androgen-induced AMH expression provides local negative feedback to folliculogenesis augmented by androgen.
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Affiliation(s)
- Keiko Ikeda
- Department of Obstetrics and Gynecology, Steel Memorial Muroran Hospital, 1-45, Chiribethutown, Muroran, Hokkaido 050 0076, Japan
| | - Tsuyoshi Baba
- Department of Obstetrics and Gynecology, Sapporo Medical University, South 1 West 16, Sapporo, Hokkaido 060 8543, Japan
| | - Miyuki Morishita
- Department of Obstetrics and Gynecology, Sapporo Medical University, South 1 West 16, Sapporo, Hokkaido 060 8543, Japan
| | - Hiroyuki Honnma
- Kamiya Ladies Clinic Sapporo, North 3 West 2, Sapporo, Hokkaido 060 0003, Japan
| | - Toshiaki Endo
- Department of Obstetrics and Gynecology, Sapporo Medical University, South 1 West 16, Sapporo, Hokkaido 060 8543, Japan
| | - Tamotsu Kiya
- Ena Ladies Clinic, 9-1-86 Hanakawa-minami, Ishikari, Hokkaido 061-3209, Japan
| | - Tsuyoshi Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University, South 1 West 16, Sapporo, Hokkaido 060 8543, Japan
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Maurya VK, Sangappa C, Kumar V, Mahfooz S, Singh A, Rajender S, Jha RK. Expression and activity of Rac1 is negatively affected in the dehydroepiandrosterone induced polycystic ovary of mouse. J Ovarian Res 2014; 7:32. [PMID: 24628852 PMCID: PMC3995551 DOI: 10.1186/1757-2215-7-32] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 02/22/2014] [Indexed: 02/07/2023] Open
Abstract
Background Polycystic ovarian syndrome (PCOS) is characterized by the presence of multiple follicular cysts, giving rise to infertility due to anovulation. This syndrome affects about 10% of women, worldwide. The exact molecular mechanism leading to PCOS remains obscure. RhoGTPase has been associated with oogenesis, but its role in PCOS remains unexplored. Therefore, we attempted to elucidate the Vav-Rac1 signaling in PCOS mice model. Methods We generated a PCOS mice model by injecting dehydroepiandrosterone (DHEA) for a period of 20 days. The expression levels of Rac1, pRac1, Vav, pVav and Caveolin1 were analyzed by employing immuno-blotting and densitometry. The association between Vav and Rac1 proteins were studied by immuno-precipitation. Furthermore, we analyzed the activity of Rac1 and levels of inhibin B and 17β-estradiol in ovary using biochemical assays. Results The presence of multiple follicular cysts in ovary were confirmed by histology. The activity of Rac1 (GTP bound state) was significantly reduced in the PCOS ovary. Similarly, the expression levels of Rac1 and its phosphorylated form (pRac1) were decreased in PCOS in comparison to the sham ovary. The expression level and activity (phosphorylated form) of guanine nucleotide exchanger of Rac1, Vav, was moderately down-regulated. We observed comparatively increased expressions of Caveolin1, 17β-estradiol, and inhibin B in the polycystic ovary. Conclusion We conclude that hyperandrogenization (PCOS) by DHEA diminishes ovarian Rac1 and Vav expression and activity along with an increase in expression of Caveolin1. This is accompanied by an increase in the intra-ovarian level of '17 β-estradiol and inhibin B.
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Affiliation(s)
| | | | | | | | | | | | - Rajesh Kumar Jha
- Division of Endocrinology, Life Science North 111B/101, CSIR-Central Drug Research Institute, B,S, 10/1, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India.
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WANG YUXIA, ZHU WEIJIE, XIE BAOGUO. Expression of PPAR-γ in adipose tissue of rats with polycystic ovary syndrome induced by DHEA. Mol Med Rep 2014; 9:889-93. [DOI: 10.3892/mmr.2014.1895] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2013] [Accepted: 12/17/2013] [Indexed: 11/06/2022] Open
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Abstract
STUDY QUESTION Do advanced glycation end products (AGEs) and their receptors play a role in female reproduction? SUMMARY ANSWER AGEs might contribute to the etiology of polycystic ovary syndrome (PCOS) and infertility. WHAT IS KNOWN ALREADY The endogenous AGEs are produced in the body by chemical reactions. Exogenous sources of AGEs are diet and smoking. AGEs have been proposed to be among the main intermediaries involved in several diseases, such as metabolic syndrome, type 2 diabetes mellitus, cardiovascular disease, ovarian aging, inflammation, neurodegenerative disorders and PCOS. STUDY DESIGN, SIZE, DURATION A systematic review was performed for all available basic science and clinical peer-reviewed articles published in PubMed from 1987 to date. Abstracts of annual meetings of the Endocrine Society and American Society for Reproductive Medicine were also reviewed. PARTICIPANTS/MATERIALS, SETTING, METHODS A total of 275 publications and scientific abstracts were identified from the initial search. Sixty-two papers and four published scientific abstracts were selected for full review. The main outcomes were the regulatory effects of AGEs on: (i) granulosa cells, adipocyte physiology, obesity and insulin resistance in women with PCOS and in polycystic ovary animal models and (ii) infertility and measures of ovarian reserve. MAIN RESULTS AND THE ROLE OF CHANCE There is an intricate relationship between the AGE-RAGE (receptor for AGEs) system and some aspects of PCOS, such as granulosa cell dysfunction, adipocyte pathophysiology, obesity and insulin resistance. Additionally, irregular ovarian AGE signaling might in part explain the abnormal ovarian histology observed in women with PCOS. The ovarian dysfunction due to AGEs in women without PCOS suggests a role for the AGE-RAGE system in the ovarian follicular environment, and might relate to assisted reproduction technology outcome and measures of ovarian reserve. LIMITATIONS, REASONS FOR CAUTION The body of literature currently available limits these findings. The results obtained from granulosa cell lines and animal models may not fully extrapolate to humans. WIDER IMPLICATIONS OF THE FINDINGS This review underscores a critical need to unveil the exact mechanistic actions of AGEs in reproductive physiology and more specifically the hypothalamic-pituitary-ovarian axis. AGE inhibitors might present an emerging therapeutic approach with significant applications in the context of PCOS and infertility. STUDY FUNDING/COMPETING INTEREST(S) American Society for Reproductive Medicine New Investigator Award and University of Vermont College of Medicine Internal Funds. No competing interests.
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Affiliation(s)
- Z Merhi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Division of Reproductive Endocrinology and Infertility, University of Vermont College of Medicine, 111 Colchester Avenue, Burlington VT 05401, USA
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Ikeda K, Baba T, Noguchi H, Nagasawa K, Endo T, Kiya T, Saito T. Excessive androgen exposure in female-to-male transsexual persons of reproductive age induces hyperplasia of the ovarian cortex and stroma but not polycystic ovary morphology. Hum Reprod 2012. [DOI: 10.1093/humrep/des385] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wu J, Cai C, Tong D, Hou H. Lysyl Oxidase G473A Polymorphism Is Associated with Increased Risk of Ovarian Cancer. Genet Test Mol Biomarkers 2012; 16:915-9. [PMID: 22533780 DOI: 10.1089/gtmb.2011.0374] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Affiliation(s)
- Jie Wu
- Medical Department, The Maternal and Child Health Hospital of Jinan City, Shandong, China
| | - Chen Cai
- Department of Special Clinic, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Danian Tong
- Department of Surgery, The Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Hongchun Hou
- Department of Gynaecology, The Maternal and Child Health Hospital of Jinan City, Shandong, China
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Abramovich D, Irusta G, Bas D, Cataldi NI, Parborell F, Tesone M. Angiopoietins/TIE2 system and VEGF are involved in ovarian function in a DHEA rat model of polycystic ovary syndrome. Endocrinology 2012; 153:3446-56. [PMID: 22577112 DOI: 10.1210/en.2012-1105] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Polycystic ovary syndrome (PCOS) is the most common endocrinological pathology among women of reproductive age. It is characterized by anovulation, oligo- or amenorrhea, hyperandrogenism, obesity, and insulin resistance. PCOS patients present with elevated levels of vascular endothelial growth factor (VEGF) in serum and follicular fluid. In this study, we examined the ovarian expression of angiopoietins (ANGPT) and their receptor tyrosine kinase receptor (TIE2), involved in the stabilization of blood vessels, in a rat model of dehydroepiandrosterone-induced PCOS. We also analyzed the effect of ovarian VEGF inhibition on ANGPT/TIE2, follicular development, and vascular stability. VEGF levels were increased in the PCOS ovaries, whereas the levels of its receptor fetal liver kinase-1 were decreased. In addition, the periendothelial cell area and the ANGPT1 to ANGPT2 ratio in the ovary were increased in the PCOS group. Percentage of primary follicles was increased and the percentage of preantral follicles and corpora lutea was decreased in the PCOS group. VEGF inhibition decreased the percentage of primary follicles close to control values. Interestingly, despite the presence of cysts in the ovaries from VEGF inhibitor-treated PCOS rats, its percentage was lower than the PCOS group without treatment. In summary, this study describes an alteration not only in the VEGF/fetal liver kinase-1 system but also in the ANGPT/TIE2 system in a dehydroepiandrosterone-induced PCOS rat model. This leads to an increase in periendothelial cell recruitment. We also demonstrated that ovarian VEGF inhibition can partially restore the accumulation of small follicles in PCOS rats and reduces cyst formation, improving ovulation and follicular development. Therefore, the inhibition of VEGF could be considered, in addition to other currently applied treatments, as a new strategy to be studied in PCOS patients to restore ovarian function.
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Affiliation(s)
- Dalhia Abramovich
- Instituto de Biología y Medicina Experimental-Consejo Nacional de Investigaciones Cientificas y Técnicas, Universidad de Buenos Aires, C1428ADN, Buenos Aires, Argentina
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Shi D, Vine DF. Animal models of polycystic ovary syndrome: a focused review of rodent models in relationship to clinical phenotypes and cardiometabolic risk. Fertil Steril 2012; 98:185-93. [DOI: 10.1016/j.fertnstert.2012.04.006] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 03/29/2012] [Accepted: 04/04/2012] [Indexed: 01/22/2023]
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Walters KA, Allan CM, Handelsman DJ. Rodent models for human polycystic ovary syndrome. Biol Reprod 2012; 86:149, 1-12. [PMID: 22337333 DOI: 10.1095/biolreprod.111.097808] [Citation(s) in RCA: 196] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Polycystic ovary syndrome (PCOS) is the most frequent female endocrine disorder, affecting 5%-10% of women, causing infertility due to dysfunctional follicular maturation and ovulation, distinctive multicystic ovaries and hyperandrogenism, together with metabolic abnormalities including obesity, hyperinsulinism, an increased risk of type 2 diabetes, and cardiovascular disease. The etiology of PCOS is unclear, and decisive clinical studies are limited by ethical and logistic constraints. Consequently treatment is palliative rather than curative and focuses on symptomatic approaches. Hence, a suitable animal model could provide a valuable means with which to study the pathogenesis of the characteristic reproductive and metabolic abnormalities and thereby identify novel and more effective treatments. So far there is no consensus on the best experimental animal model, which should ideally reproduce the key features associated with human PCOS. The prenatally androgenized rhesus monkey displays many characteristics of the human condition, including hyperandrogenism, anovulation, polycystic ovaries, increased adiposity, and insulin insensitivity. However, the high cost of nonhuman primate studies limits the practical utility of these large-animal models. Rodent models, on the other hand, are inexpensive, provide well-characterized and stable genetic backgrounds readily accessible for targeted genetic manipulation, and shorter reproductive life spans and generation times. Recent rodent models display both reproductive and metabolic disturbances associated with human PCOS. This review aimed to evaluate the rodent models reported to identify the advantages and disadvantages of the distinct rodent models used to investigate this complex endocrine disorder.
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Affiliation(s)
- Kirsty A Walters
- Andrology Laboratory, ANZAC Research Institute, Concord Hospital, University of Sydney, Sydney, New South Wales, Australia.
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Gomes VA, Vieira CS, Jacob-Ferreira AL, Belo VA, Soares GM, França JB, Ferriani RA, Tanus-Santos JE. Oral contraceptive containing chlormadinone acetate and ethinylestradiol reduces plasma concentrations of matrix metalloproteinase-2 in women with polycystic ovary syndrome. Basic Clin Pharmacol Toxicol 2012; 111:211-6. [PMID: 22510229 DOI: 10.1111/j.1742-7843.2012.00895.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Accepted: 04/10/2012] [Indexed: 12/28/2022]
Abstract
Biochemical markers of cardiovascular disease, including matrix metalloproteinases (MMPs), are altered in women with polycystic ovary syndrome (PCOS), with many of these alterations thought to be due to excess androgen concentrations. Despite oral contraceptives (OCs) being the first-line pharmacological treatment in women with PCOS and the importance of MMPs in many physiological conditions and pathological states, including cardiovascular diseases, no study has yet evaluated whether OCs alter plasma concentrations of MMPs. We therefore assessed whether treatment with an OC containing the anti-androgenic progestogen alters MMP profiles in women with PCOS. We analysed 20 women with PCOS who wanted hormonal contraception (OC-PCOS group), 20 ovulatory women who required hormonal contraception (OC-control group) and 20 ovulatory women who wanted non-hormonal contraception (non-OC-control group). OC consisted of cyclic use of 2 mg chlormadinone acetate/30 μg ethinylestradiol for 6 months. Plasma concentrations of MMP-2, MMP-9, TIMP-1 and TIMP-2 were measured by gelatin zymography or enzyme-linked immunoassays. OC treatment for 6 months significantly reduced plasma MMP-2 concentrations in the OC-control and OC-PCOS groups and TIMP-2 and TIMP-1 concentrations levels in the OC-control group (all p < 0.05), but had no effects on MMP-9 concentrations or on MMP-2/TIMP-2 and MMP-9/TIMP-1 ratios in any group (all p > 0.05). These findings indicated that long-term treatment with an OC containing chlormadinone acetate plus ethinylestradiol reduced plasma MMP-2 concentrations in both healthy and PCOS women. As the latter have imbalances in circulating matrix MMPs, treatment of these women with an OC may be beneficial.
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Affiliation(s)
- Valéria A Gomes
- Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, SP, Brazil
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Solano ME, Sander VA, Ho H, Motta AB, Arck PC. Systemic inflammation, cellular influx and up-regulation of ovarian VCAM-1 expression in a mouse model of polycystic ovary syndrome (PCOS). J Reprod Immunol 2011; 92:33-44. [PMID: 22018827 DOI: 10.1016/j.jri.2011.09.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Revised: 09/07/2011] [Accepted: 09/23/2011] [Indexed: 10/16/2022]
Abstract
PCOS, a major cause of anovulatory sterility, is associated with obesity, insulin resistance and chronic inflammation. New evidence suggests that the immune system aggravates the clinical features of PCOS. Our aim was to study the immune, metabolic and endocrine features of a mouse model of PCOS elicited by androgenisation using dehydroepiandrosterone (DHEA). We observed a significant weight gain and insulin resistance in DHEA-androgenised mice, coupled with the formation of ovarian follicular cysts. DHEA up-regulated the expression of vascular cell adhesion molecule (VCAM)-1 and intercellular adhesion molecule (ICAM)-1 in the granulosa cell layer of the majority of cysts, and VCAM-1 expression in the theca cell layer of all follicles and cysts. The expression of these markers was low in control tissue. Peritoneal cells from PCOS-mice showed enhanced production of inflammatory cytokines, suggesting an association between chronic inflammation and PCOS. In addition, DHEA-androgenisation induced the activation of CD4(+) cells both in vivo and in vitro, and their expression of the respective ligands for VCAM-1 and ICAM-1, VLA-4 and LFA-1, as assessed in vitro. CD4(+) cells were present in androgenised ovaries, especially in the granulosa cell layer of cysts with high VCAM-1 expression. Herein, we present novel evidence that the immune system is activated systemically and locally in a mouse model for PCOS. We propose that VCAM-1 is involved in aggravating PCOS symptoms by promoting leukocyte recruitment to the ovaries and perpetuating local inflammation. These findings offer novel therapeutic opportunities for PCOS, such as blockage of VCAM-1 expression.
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Affiliation(s)
- María Emilia Solano
- Laboratory for Experimental Feto-Maternal Medicine, Department of Obstetrics and Fetal Medicine, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246 Hamburg, Germany.
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Skrtic A, Sokolic L, Borovecki A, Rosa J, Fenzl V. Immunohistochemical localization of CD31, NOTCH1 and JAGGED1 proteins in experimentally induced polycystic ovaries of immature rats. Acta Histochem 2011; 113:262-9. [PMID: 19932502 DOI: 10.1016/j.acthis.2009.10.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2009] [Revised: 10/13/2009] [Accepted: 10/14/2009] [Indexed: 11/16/2022]
Abstract
We analyzed histomorphometrical changes and blood vessel immunohistochemical staining of CD31, NOTCH1 and JAGGED1 in induced polycystic ovaries of immature female Wistar rats, as well as serum hormone levels. The rats were randomly divided into control (n=18) and treated (n=18) groups. Treated animals received intramuscularly testosteronenantat weekly (0.1mg/g). Controls received the same amount of ricinus oil. Rats were weighed daily. Control and treated subgroups (6 rats per subgroup) were subsequently sacrificed after 21, 28 and 35 days of treatment. In ovaries of treated rats we found large cystic follicles, thick stromal tissue, many atretic preantral follicles, no ovulation and a thinner granulosa cell layer. CD31 stained blood vessels in the theca layer were reduced, with reduced JAGGED1 and NOTCH1 immunostaining. In controls, preantral and antral follicles were larger than in the treated group. Treated animals showed statistically significant lower progesterone and higher testosterone levels. They gained more weight than controls. Reduced immunostaining for NOTCH1 and JAGGED1 of reduced blood vessels of the theca layer was found in all stages of folliculogenesis with a distinct reduction in cystic and atretic follicles. Our results provide evidence of intrinsic abnormality during all stages of folliculogenesis in polycystic ovaries and this may result from crosstalk between circulating gonadotropins and follicular angiogenesis.
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Affiliation(s)
- Anita Skrtic
- Department of Gynaecological Pathology and GY & OB, University Hospital Merkur, Zajceva 19, Zagreb, Croatia.
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Altered expression of Bcl-2 and Bax in follicles within dehydroepiandrosterone-induced polycystic ovaries in rats. Cell Biol Int 2011; 35:423-9. [DOI: 10.1042/cbi20100542] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Papachroni KK, Piperi C, Levidou G, Korkolopoulou P, Pawelczyk L, Diamanti-Kandarakis E, Papavassiliou AG. Lysyl oxidase interacts with AGE signalling to modulate collagen synthesis in polycystic ovarian tissue. J Cell Mol Med 2011; 14:2460-9. [PMID: 19583806 PMCID: PMC3823163 DOI: 10.1111/j.1582-4934.2009.00841.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Connective tissue components – collagen types I, III and IV – surrounding the ovarian follicles undergo drastic changes during ovulation. Abnormal collagen synthesis and increased volume and density of ovarian stroma characterize the polycystic ovary syndrome (PCOS). During the ovulatory process, collagen synthesis is regulated by prolyl hydroxylase and lysyl oxidase (LOX) activity in ovarian follicles. LOX catalyzes collagen and elastin cross-linking and plays essential role in coordinating the control of ovarian extracellular matrix (ECM) during follicular development. We have recently shown accumulation of advanced glycation end products (AGEs), molecules that stimulate ECM production and abnormal collagen cross-linking, in ovarian tissue. However, the possible link between LOX and AGEs-induced signalling in collagen production and stroma formation in ovarian tissue from PCOS remains elusive. The present study investigates the hypothesis of AGE signalling pathway interaction with LOX gene activity in polycystic ovarian (PCO) tissue. We show an increased distribution and co-localization of LOX, collagen type IV and AGE molecules in the PCO tissue compared to control, as well as augmented expression of AGE signalling mediators/effectors, phospho(p)-ERK, phospho(p)-c-Jun and nuclear factor κB (NF-κB) in pathological tissue. Moreover, we demonstrate binding of AGE-induced transcription factors, NF-κB and activator protein-1 (AP-1) on LOX promoter, indicating a possible involvement of AGEs in LOX gene regulation, which may account for the documented increase in LOX mRNA and protein levels compared to control. These findings suggest that deposition of excess collagen in PCO tissue that induces cystogenesis may, in part, be due to AGE-mediated stimulation of LOX activity.
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Affiliation(s)
- Katerina K Papachroni
- Department of Biological Chemistry, Medical School, University of Athens, Athens, Greece
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Honnma H, Endo T, Kiya T, Shimizu A, Nagasawa K, Baba T, Fujimoto T, Henmi H, Kitajima Y, Manase K, Ishioka S, Ito E, Saito T. Remarkable features of ovarian morphology and reproductive hormones in insulin-resistant Zucker fatty (fa/fa) rats. Reprod Biol Endocrinol 2010; 8:73. [PMID: 20576113 PMCID: PMC2907382 DOI: 10.1186/1477-7827-8-73] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 06/24/2010] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Zucker fatty (fa/fa) rats are a well-understood model of obesity and hyperinsulinemia. It is now thought that obesity/hyperinsulinemia is an important cause of endocrinological abnormality, but to date there have been no reports on the changes in ovarian morphology or the ovarian androgen profile in rat models of obesity and insulin resistance. METHODS In this study we investigated the effects of obesity and hyperinsulinemia on ovarian morphology and the hormone profile in insulin-resistant Zucker fatty rats (5, 8, 12 and 16 weeks of age, n = 6-7). RESULTS Ovaries from 5-week-old fatty rats had significantly greater total and atretic follicle numbers, and higher atretic-to-total follicle ratios than those from lean rats. Ovaries from 12- and 16-week-old fatty rats showed interstitial cell hyperplasia and numerous cysts with features of advanced follicular atresia. In addition, serum testosterone and androstenedione levels significantly declined in fatty rats from age 8 to 16 weeks, so that fatty rats showed significantly lower levels of serum testosterone (12 and 16 weeks) and androstenedione (all weeks) than lean rats. This may reflect a reduction of androgen synthesis during follicular atresia. Serum adiponectin levels were high in immature fatty rats, and although the levels declined significantly as they matured, it remained significantly higher in fatty rats than in lean rats. On the other hand, levels of ovarian adiponectin and its receptors were significantly lower in mature fatty rats than in lean mature rats or immature fatty rats. CONCLUSIONS Our findings indicate that ovarian morphology and hormone profiles are significantly altered by the continuous insulin resistance in Zucker fatty rats. Simultaneously, abrupt reductions in serum and ovarian adiponectin also likely contribute to the infertility seen in fatty rats.
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Affiliation(s)
- Hiroyuki Honnma
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Toshiaki Endo
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Tamotsu Kiya
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Ayumi Shimizu
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Kunihiko Nagasawa
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Tsuyoshi Baba
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Takashi Fujimoto
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Hirofumi Henmi
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Yoshimitsu Kitajima
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Kengo Manase
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Shinichi Ishioka
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Eiki Ito
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
| | - Tsuyoshi Saito
- Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, South 1 West 16, Chuo-ku, Sapporo 060-8543, Japan
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Motta AB. Dehydroepiandrosterone to induce murine models for the study of polycystic ovary syndrome. J Steroid Biochem Mol Biol 2010; 119:105-11. [PMID: 20188831 DOI: 10.1016/j.jsbmb.2010.02.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Revised: 02/05/2010] [Accepted: 02/16/2010] [Indexed: 12/25/2022]
Abstract
During the last decade a battery of animal models used for the study of polycystic ovary syndrome (PCOS) have allowed a focus on different aspects of the pathology. Since dehydroepiandrosterone (DHEA) was found to be one of the most abundant circulating androgens in women with PCOS, a rodent model showing the salient features found in women with PCOS was developed by the injection of DHEA. Although insulin-sensitizing agents, such as biguanides, are clinically used in the treatment of diabetes and PCOS, the complete understanding of their mechanisms of action remains unknown. The present review discusses the molecular mechanisms involved in the development of PCOS by using the DHEA-PCOS murine model and analyzes the role of the biguanide metformin as treatment.
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Affiliation(s)
- A B Motta
- Laboratorio de Fisio-patología Ovárica, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Facultad de Medicina, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Paraguay 2155, 1121 Buenos Aires, Argentina.
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Belgorosky D, Sander VA, Yorio MPD, Faletti AG, Motta AB. Hyperandrogenism alters intraovarian parameters during early folliculogenesis in mice. Reprod Biomed Online 2010; 20:797-807. [PMID: 20362510 DOI: 10.1016/j.rbmo.2010.02.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 11/23/2009] [Accepted: 01/21/2010] [Indexed: 01/31/2023]
Abstract
This study aimed to investigate how hyperandrogenism affects early folliculogenesis. Hyperandrogenism was induced in prepuberal female BALB/c mice by daily s.c. injection of dehydroepiandrosterone (60 mg/kg body weight in 0.1 ml sesame oil) for 10 consecutive days. Although hyperandrogenism increased the growth rate of primary follicles, it also increased ovarian oxidative stress (evaluated by the increase in lipid peroxidation, the decrease in superoxide dismutase activity and the fact that glutathione content was not modified). By using the annexin V/cytometry assay it was found that the excess of androgens decreased viable ovarian cells and increased early apoptotic ones. The increased lipid peroxidation induced enhanced ovarian prostaglandin E production. In addition, hyperandrogenism increased the number of T lymphocytes that infiltrate ovarian tissue and modified their phenotype (decreased CD4+ or helper and increased the suppressor/cytotoxic CD8+). The excess of androgens decreased the ovarian expression of the long isoform of leptin receptor (Ob-Rb, the only isoform expressed in the ovarian tissue) when compared with controls. All these alterations increased serum concentrations of oestradiol, a pro-apoptotic agent. It is concluded that the excess of androgens impairs early follicular development by modulating some endocrine and immune parameters that are either directly or indirectly related to follicular atresia.
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Affiliation(s)
- Denise Belgorosky
- Laboratorio de Fisiopatología Ovárica, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Departamento de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 1121ABG Buenos Aires, Argentina
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Sander VA, Facorro GB, Piehl L, Rubín de Celis E, Motta AB. Effect of DHEA and metformin on corpus luteum in mice. Reproduction 2009; 138:571-9. [PMID: 19502455 DOI: 10.1530/rep-08-0325] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We evaluated the effect of hyperandrogenism in ovaries with functional and regressing corpora lutea (CL) and the action of metformin in preventing these possible alterations using a mouse model. To obtain a CL functional for 9+/-1 days, immature female mice of the BALB/c strain were injected i.p. with 10 IU/mouse of pregnant mare's serum gonadotropin (PMSG). DHEA (60 mg/kg body weight s.c., 24 and 48 h prior to kill) decreased both serum progesterone (P) and estradiol (E(2)) levels and increased the activity of superoxide dismutase (SOD) from ovaries with functional CL (on day 5 after PMSG). It increased P and E(2) and the activities of SOD and catalase (CAT) and decreased lipoperoxidation of ovaries with regressing CL (on day 9 after PMSG). Treatment with DHEA did not affect the production of prostaglandin F(2alpha) (PGF(2alpha)) or PGE by ovaries with functional CL, whereas DHEA decreased PGF(2alpha) and increased PGE production by ovaries with regressing CL. Metformin (50 mg/kg body weight, orally) given together with DHEA restored E(2) levels from mice with ovaries with functional CL and serum P, PGF(2alpha) and PGE levels, and oxidative balance in mice with ovaries with regressing CL. Metformin alone was able to modulate serum P and E(2) levels, lipoperoxidation, SOD and CAT, and the 5,5-dimethyl-1-pyrroline N-oxide/(*)OH signal. These findings suggest that hyperandrogenism is able to induce or to rescue CL from luteolysis and metformin treatment is able to prevent these effects.
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Affiliation(s)
- Valeria A Sander
- Laboratorio de Fisiopatología Ovárica- Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET)- Departamento de Farmacología, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 1121 Buenos Aires, Argentina
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