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Fatemi Abhari SM, Khanbabaei R, Hayati Roodbari N, Parivar K, Yaghmaei P. Curcumin-loaded super-paramagnetic iron oxide nanoparticle affects on apoptotic factors expression and histological changes in a prepubertal mouse model of polycystic ovary syndrome-induced by dehydroepiandrosterone - A molecular and stereological study. Life Sci 2020; 249:117515. [PMID: 32147428 DOI: 10.1016/j.lfs.2020.117515] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 02/09/2023]
Abstract
AIMS This study investigated the effects of curcumin-loaded super-paramagnetic iron oxide (Fe3O4) nanoparticles (NPs) (SPIONs) on histological parameters and apoptosis-inducing factors (AIFs) in an experimental mouse model of polycystic ovary syndrome (PCOS). MATERIALS AND METHODS A total number of 40 female prepuberal BALB/c mice were randomly divided into four groups. Group 1 was selected as control and Group 2 was considered as a vehicle taking sesame oil, in the form of a curcumin carrier. Moreover, Group 3 was administered with dehydroepiandrosterone (DHEA) at 6 mg/100 g of the body weight and Group 4 received the DHEA plus the NPs of curcumin (5.4 mg/100 g) for twenty consecutive days. Finally, histology, stereology, and apoptosis of the ovary were evaluated. KEY FINDINGS The results revealed that the NPs of curcumin had reduced ovarian volume (p < 0.05) and a total number of primary, secondary, antral, and primordial follicles in comparison with the PCOS and vehicle groups (p < 0.05). Furthermore, curcumin treatment following administration of the DHEA resulted in a significant decrease in BAX (p < 0.001) and levels of expression of Caspase3 (CASP3) protein, increased levels of B-cell lymphoma 2 (Bcl2) expression (p < 0.05), and moderated apoptosis in granulosa cells in comparison with the ones seen in the PCOS group. SIGNIFICANCE Ovarian injuries and DHEA-induced apoptosis were efficiently suppressed by curcumin, indicating the probable protective property of NPs of curcumin against PCOS.
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Affiliation(s)
| | - Ramzan Khanbabaei
- Department of Biology, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran.
| | - Nasim Hayati Roodbari
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Kazem Parivar
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Parichehreh Yaghmaei
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Effect of DHT-Induced Hyperandrogenism on the Pro-Inflammatory Cytokines in a Rat Model of Polycystic Ovary Morphology. ACTA ACUST UNITED AC 2020; 56:medicina56030100. [PMID: 32120970 PMCID: PMC7142739 DOI: 10.3390/medicina56030100] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 02/07/2023]
Abstract
Background and Objectives: Polycystic ovary syndrome (PCOS) is one of the most prevalent disorders among women of reproductive age. It is considered as a pro-inflammatory state with chronic low-grade inflammation, one of the key factors contributing to the pathogenesis of this disorder. Polycystic ovary is a well-established criterion for PCOS. The present investigation aimed at finding the role of hyperandrogenism, the most important feature of PCOS, in the development of this inflammatory state. To address this problem, we adopted a model system that developed polycystic ovary morphology (PCOM), which could be most effectively used in order to study the role of non-aromatizable androgen in inflammation in PCOS. Materials and Methods: Six rats were used to induce PCOM in 21-days-old female Wistar albino rats by using a pre-determined release of dihydrotestosterone (DHT), a potent non-aromatizable androgen, achieved by implanting a DHT osmotic pump, which is designed to release a daily dose of 83 μg. Results: After 90 days, the rats displayed irregular estrous cycles and multiple ovarian cysts similar to human PCOS. Elevated serum inflammatory markers such as tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), and the presence of a necrotic lesion in the liver, osteoclast in the femur, multinucleated giant cells and lymphocytes in the ovary based on histopathological observation of DHT-treated rats clearly indicated the onset of inflammation in the hyperandrogenic state. Our results show no significant alterations in serum hormones such as luteinizing hormone (LH), follicle stimulating hormone (FSH), insulin, and cortisol between control and hyperandrogenised rats. DHT was significantly elevated as compared to control. mRNA studies showed an increased expression level of TNF-α and IL-1β, further, the mRNA expression of urocortin 1 (Ucn-1) was stupendously elevated in the liver of hyperandrogenised rats. Conclusions: Thus, results from this study provide: (1) a good PCOM model system in order to study the inflammatory changes in PCOS aspects, (2) alteration of inflammatory markers in PCOM rats that could be either due to its direct effect or by the regulation of various inflammatory genes and markers in the liver of hyperandrogenic state suggesting the regulatory role of DHT, and (3) alteration in stress-related protein in the liver of PCOM rats.
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Yang Y, Cheung HH, Zhang C, Wu J, Chan WY. Melatonin as Potential Targets for Delaying Ovarian Aging. Curr Drug Targets 2020; 20:16-28. [PMID: 30156157 DOI: 10.2174/1389450119666180828144843] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 08/02/2018] [Accepted: 08/15/2018] [Indexed: 12/21/2022]
Abstract
In previous studies, oxidative stress damage has been solely considered to be the mechanism of ovarian aging, and several antioxidants have been used to delay ovarian aging. But recently, more reports have found that endoplasmic reticulum stress, autophagy, sirtuins, mitochondrial dysfunction, telomeres, gene mutation, premature ovarian failure, and polycystic ovary syndrome are all closely related to ovarian aging, and these factors all interact with oxidative stress. These novel insights on ovarian aging are summarized in this review. Furthermore, as a pleiotropic molecule, melatonin is an important antioxidant and used as drugs for several diseases treatment. Melatonin regulates not only oxidative stress, but also the various molecules, and normal and pathological processes interact with ovarian functions and aging. Hence, the mechanism of ovarian aging and the extensive role of melatonin in the ovarian aging process are described herein. This systematic review supply new insights into ovarian aging and the use of melatonin to delay its onset, further supply a novel drug of melatonin for ovarian aging treatment.
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Affiliation(s)
- Yanzhou Yang
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Ningxia Medical University, Yinchuan, Ningxia, 75004, China
| | - Hoi-Hung Cheung
- Chinese University of Hong Kong - Shandong University Joint Laboratory for Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, SAR, Hong Kong
| | - Cheng Zhang
- College of Life Science, Capital Normal University, Beijing 100048, China
| | - Ji Wu
- Key Laboratory of Fertility Preservation and Maintenance, Ministry of Education, Key Laboratory of Reproduction and Genetics in Ningxia, Ningxia Medical University, Yinchuan, Ningxia, 75004, China.,Renji Hospital, Key Laboratory for the Genetics of Developmental & Neuropsychiatric Disorders (Ministry of Education), Bio-X Institutes, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wai-Yee Chan
- Chinese University of Hong Kong - Shandong University Joint Laboratory for Reproductive Genetics, School of Biomedical Sciences, Faculty of Medicine, the Chinese University of Hong Kong, SAR, Hong Kong
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54
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Mitochondrial dysfunction: An emerging link in the pathophysiology of polycystic ovary syndrome. Mitochondrion 2020; 52:24-39. [PMID: 32081727 DOI: 10.1016/j.mito.2020.02.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/31/2019] [Accepted: 02/12/2020] [Indexed: 12/19/2022]
Abstract
Polycystic ovary syndrome (PCOS) is a common endocrine disorder characterized by irregular menstrual cycles, hyperandrogenism and subfertility. Due to its complex manifestation, the pathogenic mechanism of PCOS is not well defined. Cumulative effect of altered genetic and epigenetic factors along with environmental factors may play a role in the manifestation of PCOS leading to systemic malfunction. With failure of genome-wide association study (GWAS) and other studies performed on nuclear genome to provide any clue for precise mechanism of PCOS pathogenesis, attention has been diverted to mitochondria. Mitochondrion plays an important role in cellular metabolic functions and is linked to Insulin Resistance (IR). Recently, increasing reports suggest that mitochondrial dysfunction may be a contributing factor in the pathogenesis of PCOS. Hence, in this review, we have discussed mitochondrial biology in brief and emphasizes on genetic and epigenetic aspects of mitochondrial dysfunction studied in PCOS women and PCOS-like animal models. We also highlight underlying mechanism behind mitochondrial dysfunction contributing to PCOS and its related complications such as obesity, diabetes, cardiovascular diseases, metabolic syndrome, non-alcoholic fatty liver disease (NAFLD) and cancer. Furthermore, contrasting remarks against involvement of mitochondrial dysfunction in PCOS pathophysiology have also been presented. This review enhances our understanding in relation to mitochondrial dysfunction in the etiology of PCOS and stimulates further research to explore a clear link between mitochondrial dysfunction and PCOS pathogenesis and progression. Understanding pathogenic mechanisms underlying PCOS will open new windows to develop promising therapeutic strategies against PCOS.
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Alizadeh F, Ramezani M, Piravar Z. Effects of Stachys sylvatica hydroalcoholic extract on the ovary and hypophysis-gonadal axis in a rat with polycystic ovary syndrome. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2020. [DOI: 10.1186/s43043-020-0015-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Polycystic ovary syndrome (PCOS) is the most common endocrinopathy affecting women. The purpose of this study is to evaluate the effects of Stachys sylvatica hydroalcoholic extract on biochemical and histological parameters in a rat model of polycystic ovary syndrome. Thirty adult female Wistar rats with an average weight of 180 g were divided into five groups of six rats. Animals were divided into groups of control, PCOS (intramuscular injection of 2 mg estradiol valerate, Aburaihan Co., Iran/rat, once), and treated with hydroalcoholic extract of Stachys sylvatica. After 60 days of PCOS induction, 100, 250, and 500 mg/kg BW Stachys sylvatica hydroalcoholic extract were injected intraperitoneally. The control group was just injected with olive oil as a solvent. After 10 days of treatment, animals were weighed and then sacrificed and blood samples were taken from their heart for hormonal studies. Ovaries of all groups were cut for histological studies and fixed in formaldehyde, and 7-μm sections were prepared by microtome and stained using hematoxylin–eosin. The data were analyzed by one-way ANOVA and Tukey-Kramer post hoc test with the SPSS software. The significant level was p < 0.05.
Results
The Stachys sylvatica extract can improve obesity in the PCOS group. The histological and hormonal results showed that PCOS induction can decrease the number of preantral, antral, and Graafian follicles as well as corpus luteum in comparison with the control (p < 0.001), whereas the number of cystic follicles increased significantly (p < 0.001). After treatment with Stachys sylvatica hydroalcoholic extract (500 mg/kg), a significant increase was observed in all these parameters. In addition, the number of cystic follicles decreased significantly (p < 0.001). The level of LH and FSH hormones decreased significantly (p < 0.01) in the PCOS group compared with the control. In contrast, the estrogen level increased significantly (p < 0.01). In the 250 and 500 mg/kg group, treatment with the extract could increase FSH and decrease estrogen concentration significantly relative to the PCOS group (p < 0.01). Results of antral follicle morphometry indicated an increase in follicle diameter and theca thickness, but the thickness of the granulosa layer decreased significantly. An improvement in these measurements was observed in the treated PCOS groups with all doses.
Conclusions
It can be concluded that Stachys sylvatica hydroalcoholic extract can improve some symptoms of polycystic ovary syndrome because of components such as iridoids, flavonoids, and sesquiterpenes with antioxidant and anti-inflammatory effects. In this experiment, 500 mg/kg dose of extract was considered as the most effective dose.
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56
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Chu W, Zhai J, Xu J, Li S, Li W, Chen ZJ, Du Y. Continuous Light-Induced PCOS-Like Changes in Reproduction, Metabolism, and Gut Microbiota in Sprague-Dawley Rats. Front Microbiol 2020; 10:3145. [PMID: 32038578 PMCID: PMC6990112 DOI: 10.3389/fmicb.2019.03145] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 12/29/2019] [Indexed: 12/12/2022] Open
Abstract
The interplay between genetic and environmental risk factors contributes to the pathogenesis of metabolic disease. Polycystic ovary syndrome (PCOS) is the most common endocrine and metabolic disorder in women of reproductive age. Circadian rhythm disruption is an important risk factor for PCOS. In this study, we evaluated the effect of circadian disorder on reproduction as well as metabolism, and determined its influence on gut microbiota in a rat model. Female Sprague Dawley (SD) rats were kept under continuous light exposure (12-h:12-h light/light cycle, L/L group) or a control cycle (12-h:12-h light/dark cycle, L/D group) for four consecutive weeks. Manifestations in endocrine hormones and metabolism were detected and gut microbiota were analyzed with the 16s rRNA gene sequencing technique. To our knowledge, this is the first study to report PCOS-like reproductive manifestation, such as anti-Müllerian hormone (AMH) elevation induced by continuous light exposure. Moreover, continuous light resulted in abnormal glucose metabolism and gut microbial community variations, including enrichment of the microbial genus of Parasutterella and reduced abundance of genus Corynebacterium, genus Odoribacter, and genus Acinetobacter. Increased Parasutterella abundance was positively correlated with serum testosterone level. A PICRUSt analysis revealed that reproductive and metabolic-related genes were enriched in rats of L/D group. In conclusion, the present study demonstrates that continuous light exposure, an important environmental factor, contributes to the occurrence and developmental progress of PCOS and changes in microbial component and structure. Continuous light exposure is one of vital causes of PCOS, which is closely related to microbial structure and functions.
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Affiliation(s)
- Weiwei Chu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Junyu Zhai
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Jieying Xu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Shang Li
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Weiping Li
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China.,Center for Reproductive Medicine, Shandong University, Jinan, China.,National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Jinan, China.,The Key Laboratory for Reproductive Endocrinology of the Ministry of Education, Center for Reproductive Medicine, Jinan, China
| | - Yanzhi Du
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.,Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
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57
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Zhang S, Tu H, Zhu J, Liang A, Huo P, Shan K, He J, Zhao M, Chen X, Lei X. Dendrobium nobile Lindl. polysaccharides improve follicular development in PCOS rats. Int J Biol Macromol 2020; 149:826-834. [PMID: 31978473 DOI: 10.1016/j.ijbiomac.2020.01.196] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 01/13/2020] [Accepted: 01/20/2020] [Indexed: 12/11/2022]
Abstract
Polycystic ovary syndrome (PCOS) is the most typical and common metabolic abnormalities in women of reproductive age. This study examined the protective effects of Dendrobium nobile Lindl. polysaccharides (DNLP) on ovarian follicular development in letrozole-induced PCOS rats and explored the underlying molecular mechanisms. The PCOS rats showed the increased body weight, serum testosterone and luteinizing hormone levels and insulin resistance. DNLP treatment reduced the body weight, serum testosterone level and insulin resistance, but failed to affect luteinizing hormone level in the PCOS rats. DNLP treatment recovered disrupted estrous cycle in the PCOS rats. DNLP treatment decreased antral follicles and increased the thickness of the granular cell layer. DNLP treatment increased the PCNA mRNA and protein expression levels in the PCOS ovarian tissues, and inhibited cell apoptosis in the PCOS ovarian tissues via regulating apoptosis-related proteins including Bax, Bcl-2 and caspase-3. In summary, this study demonstrated the protective effects of DNLP on the ovaries in the letrozole-induced PCOS rat model. DNLP exerted its protective effects via improving follicular development and inhibiting apoptosis of ovarian granular cells in PCOS rats. This study will provide experimental basis for the future clinical application of DNLP in the treatment of PCOS.
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Affiliation(s)
- Shun Zhang
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China.
| | - Haoyan Tu
- Department of Reproductive Medical Center, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Jiamin Zhu
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi 563000, China
| | - Aihong Liang
- Clinical Anatomy and Reproductive Medicine Application Institute, Department of Histology and Embryology, University of South China, Hengyang 421001, China
| | - Peng Huo
- School of Public and Health, Guilin Medical University, Guilin 541004, China
| | - Ke Shan
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi 563000, China
| | - Junyi He
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi 563000, China
| | - Meng Zhao
- School of Basic Medical Sciences, Zunyi Medical University, Zunyi 563000, China
| | - Xi Chen
- Clinical Anatomy and Reproductive Medicine Application Institute, Department of Histology and Embryology, University of South China, Hengyang 421001, China.
| | - Xiaocan Lei
- Clinical Anatomy and Reproductive Medicine Application Institute, Department of Histology and Embryology, University of South China, Hengyang 421001, China.
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58
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Lin PH, Chang CC, Wu KH, Shih CK, Chiang W, Chen HY, Shih YH, Wang KL, Hong YH, Shieh TM, Hsia SM. Dietary Glycotoxins, Advanced Glycation End Products, Inhibit Cell Proliferation and Progesterone Secretion in Ovarian Granulosa Cells and Mimic PCOS-like Symptoms. Biomolecules 2019; 9:biom9080327. [PMID: 31370285 PMCID: PMC6723748 DOI: 10.3390/biom9080327] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 07/24/2019] [Accepted: 07/29/2019] [Indexed: 12/17/2022] Open
Abstract
Women with polycystic ovary syndrome (PCOS) have been reported to have an elevated serum advanced glycation end product (AGE) level. However, the effect of AGEs on the pathophysiological ovarian granulosa cells of PCOS is still unclear. In this study, five indented BSA-derived AGE products were used to evaluate their effect on the function of human granulosa cells. We found that the proliferation of both primary human ovarian granulosa (hGC) cells and human granulosa-like tumor (KGN) cells were inhibited by treatment with these five AGE products. The progesterone secretion level was also reduced in both hGC and KGN cells by treatment with these AGE products through downregulation of LH receptor/cAMP regulatory activity. The granulosa cell layer and serum progesterone level were reduced in rats by treatment with MG-BSA; moreover, an increased number of follicle cysts and an irregular estrous cycle were observed. MG-BSA treatment had a similar effect on the phenotypes of the DHEA-induced PCOS model. Additionally, the insulin resistance and hepatic lesions seen in the DHEA-induced PCOS model were observed in the MG-BSA treatment group. Taken together, we found that AGEs exert a toxic effect on ovarian granulosa cells, ovarian morphology, and the estrous cycle that mimics the DHEA-induced PCOS phenotypes.
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Affiliation(s)
- Po-Han Lin
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan
| | - Chih-Chao Chang
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan
| | - Kun-Hsuan Wu
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Chun-Kuang Shih
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan
| | - Wenchang Chiang
- Institute of Food Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Hsin-Yuan Chen
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan
| | - Yin-Hwa Shih
- Department of Healthcare Administration, Asia University, Taichung 41354, Taiwan
| | - Kei-Lee Wang
- Department of Nursing, Ching Kuo Institute of Management and Health, Keelung 20301, Taiwan
| | - Yong-Han Hong
- Department of Nutrition, I-Shou University, Kaohsiung 84001, Taiwan
| | - Tzong-Ming Shieh
- School of Dentistry, College of Dentistry, China Medical University, Taichung 40402, Taiwan
| | - Shih-Min Hsia
- School of Nutrition and Health Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan.
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei 11031, Taiwan.
- School of Food and Safety, Taipei Medical University, Taipei 11031, Taiwan.
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan.
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59
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Affiliation(s)
- Mohamed A Abedal-Majed
- Department of Animal Production, School of Agriculture, University of Jordan, Amman, Jordan
| | - Andrea S Cupp
- Department of Animal Science, University of Nebraska-Lincoln, Lincoln, NE
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Animal Models for Human Polycystic Ovary Syndrome (PCOS) Focused on the Use of Indirect Hormonal Perturbations: A Review of the Literature. Int J Mol Sci 2019; 20:ijms20112720. [PMID: 31163591 PMCID: PMC6600358 DOI: 10.3390/ijms20112720] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/14/2019] [Accepted: 05/23/2019] [Indexed: 02/07/2023] Open
Abstract
Hormonal disturbances, such as hyperandrogenism, are considered important for developing polycystic ovary syndrome (PCOS) in humans. Accordingly, directly hormone-regulated animal models are widely used for studying PCOS, as they replicate several key PCOS features. However, the pathogenesis and treatment of PCOS are still unclear. In this review, we aimed to investigate animal PCOS models and PCOS-like phenotypes in animal experiments without direct hormonal interventions and determine the underlying mechanisms for a better understanding of PCOS. We summarized animal PCOS models that used indirect hormonal interventions and suggested or discussed pathogenesis of PCOS-like features in animals and PCOS-like phenotypes generated in other animals. We presented integrated physiological insights and shared cellular pathways underlying the pathogenesis of PCOS in reviewed animal models. Our review indicates that the hormonal and metabolic changes could be due to molecular dysregulations, such as upregulated PI3K-Akt and extracellular signal-regulated kinase (ERK) signalling, that potentially cause PCOS-like phenotypes in the animal models. This review will be helpful for considering alternative animal PCOS models to determine the cellular/molecular mechanisms underlying PCOS symptoms. The efforts to determine the specific cellular mechanisms of PCOS will contribute to novel treatments and control methods for this complex syndrome.
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61
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Bevilacqua A, Dragotto J, Giuliani A, Bizzarri M. Myo-inositol and D-chiro-inositol (40:1) reverse histological and functional features of polycystic ovary syndrome in a mouse model. J Cell Physiol 2019; 234:9387-9398. [PMID: 30317628 DOI: 10.1002/jcp.27623] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 09/24/2018] [Indexed: 12/16/2022]
Abstract
Mice exposed to continuous light undergo functional and histological changes that mimic those of human Polycystic Ovary Syndrome (PCOS). We herein induced the syndrome by exposing 30-day-old females to 10 weeks of permanent light. Ovarian morphology and histology, as well as reproductive parameters (time of observed pregnancy/delivery) were investigated. Ovaries of PCOS-modeled mice showed lack of tertiary follicles and corpora lutea, altered ovarian architecture, and increased thickness of the theca layer. When mice were returned to a normal light-dark regimen for 10 days, a slight, spontaneous improvement occurred, whereas a quick and almost complete recovery from PCOS signs and symptoms was obtained by treating animals with a daily supplementation of 420 mg/kg myo-inositol and D-chiro-inositol (MyoIns/DCIns) in a 40:1 molar ratio. Namely, ovaries from mice treated by this protocol recovered normal histological features and a proper ratio of theca/granulosa cell layer thickness (TGR), suggesting that the androgenic phenotype was efficiently reversed. Indeed, we identified TGR as a useful index of PCOS, as its increase in PCOS-modeled mice correlated linearly with reduced reproductive capability ( r = 0.75, p < 0.0001). Mice treated with a 40:1 formula regained low TGR values and faster recovery of their fertility, with a physiological delivery time after mating. On the other hand, a higher D-chiro-inositol treatment formula, such as MyoIns versus DCIns 5:1, was ineffective or even had a negative effect on clinical-pathological outcomes.
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Affiliation(s)
- Arturo Bevilacqua
- Department of Dynamic and Clinical Psychology, Sapienza University of Rome and Research Center in Neurobiology Daniel Bovet" (CRiN), Rome, Italy
| | - Jessica Dragotto
- Department of Psychology, Sapienza University of Rome, Rome, Italy
| | - Alessandro Giuliani
- Department of Environment and Primary Prevention, Istituto Superiore di Sanità, Rome, Italy
| | - Mariano Bizzarri
- Department of Experimental Medicine, Sapienza University of Rome, Systems Biology Group Lab, Rome, Italy
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Chika C, Ifeyinwa N, Azubuike U, David O. Oestrous cycle of Wistar rats altered by sterol and triterpenes rich fraction of Adansonia digitata (Linn) root bark - A scientific rationale for contraceptive use. ASIAN PACIFIC JOURNAL OF REPRODUCTION 2019. [DOI: 10.4103/2305-0500.254649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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63
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Polycystic Ovarian Condition May Be a Risk Factor for Ovarian Tumor Development in the Laying Hen Model of Spontaneous Ovarian Cancer. J Immunol Res 2018; 2018:2590910. [PMID: 30596106 PMCID: PMC6286744 DOI: 10.1155/2018/2590910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 08/26/2018] [Accepted: 09/17/2018] [Indexed: 12/28/2022] Open
Abstract
Chronic inflammation and long-standing oxidative stress are potential predisposing factors for developing malignancies, including ovarian cancer (OVCA). Information on the association of ovarian chronic abnormal conditions, including polycystic ovarian syndrome (PCOS), with the development of OVCA is unknown. The goal of this study was to examine if polycystic ovarian conditions are associated with OVCA development. In the exploratory study, 3-4-year-old laying hens were randomly selected and examined for the presence of polycystic ovaries with cancer (PCOC). In the prospective study, hens were monitored by ultrasound scanning to detect the incidence of a polycystic ovaries and subsequent development of OVCA. Tissues from normal ovaries and PCOC were examined for macrophage infiltration, expression of interleukin-16, and superoxide dismutase 2. The exploratory study detected spontaneous PCOC at early and late stages in hens. PCOC in hens were accompanied with influx of macrophages (17.33 ± 2.26 in PCOC at the early stage and 24.24 ± 2.5 in PCOC at the late stage in 20 mm2 areas of tissue as compared with 6.77 ± 1.58 in normal hens). Expression of interleukin-16 was more than 2.5-fold higher and superoxide dismutase 2 was approximately 3-fold higher in PCOC hens than normal hens. The prospective study showed the development of OVCA in some hens with polycystic ovarian condition (PCO). PCOC development in hens was associated with chronic inflammation in the ovary. Laying hens may represent a potential model for the study of spontaneous PCOS and its long-term risk of PCOC development.
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Shah AB, Nivar I, Speelman DL. Elevated androstenedione in young adult but not early adolescent prenatally androgenized female rats. PLoS One 2018; 13:e0196862. [PMID: 29723293 PMCID: PMC5933698 DOI: 10.1371/journal.pone.0196862] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 04/20/2018] [Indexed: 12/26/2022] Open
Abstract
Background Elevated testosterone (T) is routinely reported as a marker of hyperandrogenemia in rodent models for polycystic ovary syndrome (PCOS). In women with PCOS, elevated serum androstenedione (A4) is associated with more severe phenotypes, including a positive correlation with serum T, DHEAS, free androgen index (FAI), LH, and LH/FSH ratio. Furthermore, A4, along with calculated free T and FAI, was identified as one of the best predictors of PCOS in adult women of all ages (18 to > 50 y). Objective The objective of this study was to investigate serum A4 levels in early adolescent and young adult prenatally androgenized (PNA) female rats, a model for PCOS. Methods Pregnant rats were injected with 5 mg T daily during gestational days 16–19 (PNA rats, experimental group) or an equal volume of vehicle (control group). Female offspring of both groups had tail vein blood drawn for serum analysis at 8 and 16 weeks of age. ELISAs were used to quantify serum A4 and T levels. Results Serum A4 and T were elevated in 16-week-old PNA rats compared to controls. There was no significant difference in either hormone at 8 weeks of age. Conclusions The PNA rats demonstrated elevated serum A4 and T in young adulthood, as has been observed in women with PCOS, further validating this as a model for PCOS and underscoring the importance of serum A4 elevation as a parameter inherent to PCOS and a rodent model for the disorder. Significant A4 elevation develops between early adolescence and early adulthood in this PNA rat model.
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Affiliation(s)
- Ami B. Shah
- Department of Biochemistry, Lake Erie College of Osteopathic Medicine, Erie, PA, United States of America
| | - Isaac Nivar
- Department of Biochemistry, Lake Erie College of Osteopathic Medicine, Erie, PA, United States of America
| | - Diana L. Speelman
- Department of Biochemistry, Lake Erie College of Osteopathic Medicine, Erie, PA, United States of America
- * E-mail:
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Patel R, Shah G. High-fat diet exposure from pre-pubertal age induces polycystic ovary syndrome (PCOS) in rats. Reproduction 2018; 155:141-151. [DOI: 10.1530/rep-17-0584] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 10/30/2017] [Accepted: 11/09/2017] [Indexed: 01/17/2023]
Abstract
Polycystic ovary syndrome (PCOS) is associated with hyperandrogenism, oligo-anovulation, polycystic ovaries and metabolic syndrome. Many researchers reported that PCOS often starts with menarche in adolescents. Presently available animal model focuses on ovarian but not metabolic features of PCOS. Therefore, we hypothesized that high-fat diet feeding to pre-pubertal female rats results in both reproductive and metabolic features of PCOS. Pre-pubertal female rats were divided into two groups: group I received normal pellet diet and group II received high-fat diet (HFD). In the letrozole study, adult female rats were divided into two groups: group I received 1% carboxy methyl cellulose and group II received 1 mg/kg letrozole orally. Oral glucose tolerance test, lipid profile, fasting glucose, insulin, estrus cycle, hormonal profile, ovary weight, luteinizing hormone (LH) receptor and follicle-stimulating hormone receptor expression were measured. Polycystic ovarian morphology was assessed through histopathological changes of ovary. Feeding of HFD gradually increase glucose intolerance and fasting insulin levels. Triglyceride level was higher in HFD study while total cholesterol level was higher in the letrozole study. Alteration in testosterone and estrogen levels was observed in both studies. LH receptor expression was upregulated only in HFD study. Histopathological changes like increase cystic follicle, diminished granulosa cell layer and thickened theca cell layer were observed in letrozole as well as HFD study. High-fat diet initiated at pre-puberty age in rats produces both metabolic disturbances and ovarian changes similar to that observed clinically in PCOS patients. Letrozole on the other hand induces change in ovarian structure and function.
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Affiliation(s)
- Roshni Patel
- 1Department of Pharmacology and Pharmacy Practice, K. B. Institute of Pharmaceutical Education and Research, Gandhinagar, Gujarat, India
| | - Gaurang Shah
- 2Department of Pharmacology, L. M. College of Pharmacy, Ahmedabad, Gujarat, India
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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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Ersoy B, Kizilay D, Cayirli H, Temiz P, Gunsar C. Central Precocious Puberty Secondary to Adrenocortical Adenoma in a Female Child: Case Report and Review of the Literature. J Pediatr Adolesc Gynecol 2017; 30:591-594. [PMID: 28578183 DOI: 10.1016/j.jpag.2017.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/19/2017] [Accepted: 05/25/2017] [Indexed: 11/15/2022]
Abstract
BACKGROUND Pediatric adrenocortical tumors are rare but significant causes of virilization and peripheral precocious puberty (PPP). CASE A 4-year-old girl presented with development of breast, pubic hair, and facial acne. Her bone age was advanced, and her gonadotropin level did not elevate in a gonadotropin-releasing hormone (GnRH) test. High levels of dehydroepiandrosterone sulfate, estradiol, and testosterone, and detection of a tumor in the left adrenal gland of the abdomen using computed tomography led to a diagnosis of PPP due to adrenal tumor. Adrenal adenoma was diagnosed with pathology after the tumor was removed. Ultrasonography detected multicystic ovaries before surgery. Although the androgen levels decreased, high estrogen levels persisted after complete tumor resection. Approximately 1 year after the surgery, the patient's breast development persisted, bone age progressed rapidly, and gonadotropin levels increased in a GnRH test. Central precocious puberty was diagnosed, and treatment with GnRH analogues was started. SUMMARY AND CONCLUSION Adrenal adenoma might present with isosexual PPP as well as virilization in girls. The ovaries should be carefully assessed in these patients. Prolonged exposure to androgen and estrogen might cause ovarian multicysts leading to persistence of high estrogen levels and initiation of central precocious puberty.
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Affiliation(s)
- Betul Ersoy
- Division of Pediatric Endocrinology, Celal Bayar University, School of Medicine, Manisa, Turkey
| | - Deniz Kizilay
- Division of Pediatric Endocrinology, Celal Bayar University, School of Medicine, Manisa, Turkey
| | - Hasan Cayirli
- Department of Pediatric Surgery, Celal Bayar University, School of Medicine, Manisa, Turkey.
| | - Peyker Temiz
- Department of Pathology, Celal Bayar University, School of Medicine, Manisa, Turkey
| | - Cuneyt Gunsar
- Department of Pediatric Surgery, Celal Bayar University, School of Medicine, Manisa, Turkey
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Wilkinson M, Brown RE, Imran SA, Wilkinson DA. Letter to the Editor: Hypothalamic Kisspeptin in Female Rat Models of PCOS. Endocrinology 2017; 158:2011. [PMID: 28575428 DOI: 10.1210/en.2017-00327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 04/04/2017] [Indexed: 11/19/2022]
Affiliation(s)
| | | | - Syed A Imran
- Dalhousie University, Halifax, Nova Scotia B3K 6R8, Canada
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