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Lin P, Zhang X, Zhu B, Gao J, Yin D, Zeng J, Kang Z. Naringenin protects pancreatic β cells in diabetic rat through activation of estrogen receptor β. Eur J Pharmacol 2023; 960:176115. [PMID: 37866740 DOI: 10.1016/j.ejphar.2023.176115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/24/2023]
Abstract
Naringenin is a citrus flavonoid that potently improves metabolic parameters in animal models of metabolic disorders, such as type 2 diabetes. Estrogen receptor (ER) activation promotes β cell function and survival, thereby improving systemic glucose metabolism. In this study, we used a luciferase reporter assay, isolated rat islets and a diabetic rat model to investigate the effects of naringenin on ER signaling and the underlying mechanism of naringenin-mediated improvement of islet function in diabetes. Naringenin specifically activated ERβ without affecting the activity of ERα, G protein-coupled estrogen receptor (GPER) or estrogen-related receptor (ERR) α/β/γ. Additionally, treatment with naringenin enhanced glucose-stimulated insulin secretion in isolated rat islets. This effect was abrogated by PHTPP, an ERβ antagonist. Transcriptomic analysis revealed that naringenin upregulated the expression of genes, such as Pdx1 and Mafa, which are closely linked to improved β-cell function. In consistence, single administration of naringenin to normal rats elevated plasma insulin levels and improved glucose responses. These beneficial effects were blocked by PHTPP. In streptozocin-nicotinamide induced diabetic rats, treatment for 2 weeks with naringenin alone, but not in combination with PHTPP, significantly restored pancreatic β cell mass and improved glucose metabolism. Collectively, these data support that naringenin specifically activate ERβ to improve insulin secretion in the primary rat islets. Furthermore, naringenin administration also protected β cell function and reversed glucose dysregulation in diabetic rats. These beneficial effects are at least partially dependent on the ERβ pathway.
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Affiliation(s)
- Peibin Lin
- Department of Basic Medical Research, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China
| | - Xiaojing Zhang
- Department of Pharmacy, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China
| | - Baoyi Zhu
- Department of Urology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China; Guangdong Engineering Research Center of Urinary Continence and Reproductive Medicine, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China
| | - Jun Gao
- Department of Basic Medical Research, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China
| | - Dazhong Yin
- Department of Basic Medical Research, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China
| | - Jianwen Zeng
- Department of Urology, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China; Guangdong Engineering Research Center of Urinary Continence and Reproductive Medicine, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China.
| | - Zhanfang Kang
- Department of Basic Medical Research, Qingyuan People's Hospital, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China; Guangdong Engineering Research Center of Urinary Continence and Reproductive Medicine, The Sixth Affiliated Hospital of Guangzhou Medical University, Qingyuan, Guangdong, China.
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Inada A, Fukatsu A. Persistence and expansion of hypoxia detected by pimonidazole adduct immunostaining during progression of diabetic nephropathy in diabetic mice. Am J Physiol Renal Physiol 2023; 325:F527-F535. [PMID: 37615048 DOI: 10.1152/ajprenal.00160.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/25/2023] [Accepted: 08/17/2023] [Indexed: 08/25/2023] Open
Abstract
Hypoxia and oxidative stress are considered to be underlying factors in the deterioration of renal function and pathogenesis in acute kidney injury (AKI) and chronic kidney disease, including diabetic nephropathy (DN). However, the long-term role of hypoxia in DN is unknown. Here, we investigated the distribution, severity, and time course of hypoxia during DN development in our well-established severely diabetic transgenic (Tg) DN mouse model that mimics human DN up to 80 wk of age, using pimonidazole adduct immunohistochemistry. The relationship between pimonidazole adduct distribution and hypoxia-inducible factor (HIF) expression was also examined. We found 1) persistent pimonidazole immunostaining mainly in the outer zone of the outer medulla, extending into the inner zone, 2) significant expansion of area and intensity up to 40 wk of age, and 3) characteristic subcellular localization mainly at apical sites in vesicular form by laser scanning microscopy of thin slices. The distribution of pimonidazole adducts was different from that of HIF reported previously, indicating that hypoxia does not directly contribute to persistent abnormal HIF expression. These results suggest that pimonidazole adducts produced under low [Formula: see text] conditions are sustained by a mechanism distinct from direct ischemia. We propose that in the long course of DN development, persistent hyperfiltration and hyperexcretion of glucose, albumin, and water increase metabolism and energy expenditure in the tubules, and such chronic stimulation leads to relative ischemia and local hypoxia, which may contribute in part to the loss of nephrons.NEW & NOTEWORTHY This study provides new insights into hypoxia during the long course of diabetic nephropathy development. Hypoxia was persistently localized only in limited areas and its distribution differed significantly from that of hypoxia-inducible factors. These findings suggests that in the long course of diabetic nephropathy development, increased energy requirements and limited blood supply may lead to relative ischemia and induction of local and persistent hypoxia, which may contribute in part to the loss of nephrons.
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Affiliation(s)
- Akari Inada
- Clinical Research Department, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Japan
- Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Inada A, Yasunami Y, Yoshiki A, Nabeshima YI, Inada O. Greb1 Transiently Accelerates Pancreatic β-Cell Proliferation in Diabetic Mice Exposed to Estradiol. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1081-1100. [PMID: 37516458 DOI: 10.1016/j.ajpath.2023.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/14/2023] [Accepted: 04/04/2023] [Indexed: 07/31/2023]
Abstract
Decrease of pancreatic β cells leads to diabetes. In an inducible cAMP early suppressor (ICER-Iγ) transgenic mouse model of severe type 2 diabetes with reduced insulin production and depleted β cells, supplementation with high concentrations of 17β-estradiol (E2) markedly enhances β-cell proliferation and normalizes glucose levels. The current study explored the underlying mechanisms leading to a dynamic increase of β cells and pathologic changes in diabetic mice exposed to E2. Gene expression profiling of pancreatic islets of 6-month-old ICER-transgenic mice recovering from diabetes due to elevated E2 levels identified growth regulation by estrogen in breast cancer 1 (Greb1) as a gene significantly up-regulated during the recovery phase. To substantiate this, β-cell-specific Greb1-deficient mice were generated, and Greb1 was shown to be essential for recovery of depleted β cells in diabetic mice. Graft growth and glucose lowering were observed in 50 islets with increased Greb1 expression transplanted adjacent to E2 pellets beneath the kidney capsule of streptozotocin-induced diabetic mice. Greb1 expression due to a drastic increase in exogenous or endogenous E2 was transient and closely correlated with changes in E2-related and some cell cycle-related genes. These findings provide new insights into in vivo proliferation of deficient β cells and suggest the possibility of new therapeutic approaches targeting pancreatic β cells that could revolutionize the concept of diabetes treatment, which has been considered difficult to cure completely.
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Affiliation(s)
- Akari Inada
- Clinical Research Department, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Japan; Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Japan; Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | | | - Atsushi Yoshiki
- Experimental Animal Division, RIKEN BioResource Research Center, Tsukuba, Japan
| | - Yo-Ichi Nabeshima
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Foundation for Biomedical Research and Innovation at Kobe, Kobe, Japan
| | - Oogi Inada
- Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Estrogen as a key regulator of energy homeostasis and metabolic health. Biomed Pharmacother 2022; 156:113808. [DOI: 10.1016/j.biopha.2022.113808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/23/2022] Open
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Inada A, Inada O. Differences in long-term effects of standard rodent diets on blood glucose and body weight of offspring. Diabetol Int 2022; 13:615-623. [PMID: 36117929 PMCID: PMC9477981 DOI: 10.1007/s13340-022-00578-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 03/10/2022] [Indexed: 01/03/2023]
Abstract
Standard rodent diets are similar and contain well-balanced components, such as crude protein, fat, fiber, and ash. However, it is not clear whether there are differences in their long-term effects on metabolism. Here, we investigated the effects of long-term feeding of major standard diets, CRF-1, CE-2, and FR-1 to wild-type (WT) C57BL/6 mice on the blood glucose levels and body weight gain of their offspring, which were raised on the same diet and in the same environment as the mothers. The offspring have been influenced by the maternal diet during the fetal and neonatal stages, and were maintained on the same diet thereafter (until 60 weeks of age). In the CE-2 group, the offspring showed stable blood glucose levels and had the lowest body weight. The FR1 group showed the lowest blood glucose level, but body weight was increased significantly compared to the CE-2 group. In the CRF-1 group, higher blood glucose levels were seen from the neonatal stage and body weight increased more rapidly than in the other groups. Next, to determine the effects of blood glucose level and housing pattern on food and water consumption, severely diabetic (hyperglycemic) inducible cAMP early repressor (ICER) transgenic (Tg) mice and littermate WT mice (normoglycemic) were fed CE-2 diet and housed individually or in groups. Food and water consumption of WT mice was independent of housing pattern, whereas Tg mice showed significantly increased food and water consumption when housed individually, compared to group housing, and this did not change at different ages. Thus, the selection of standard diet and rearing method can have a marked impact on experimental outcomes in experiments using mice and presumably mouse cells, especially in studies of metabolism, diabetes, and obesity.
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Affiliation(s)
- Akari Inada
- grid.177174.30000 0001 2242 4849Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- grid.417982.10000 0004 0623 246XPresent Address: Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation (IBRI), 6-3-7 Minatojima Minamimachi, Chuo-ku, Kobe, Hyogo 650-0047 Japan
| | - Oogi Inada
- grid.177174.30000 0001 2242 4849Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Inada A, Inada O, Yasunami Y, Arakawa K, Nabeshima YI, Fukatsu A. Amelioration of Murine Diabetic Nephropathy with a SGLT2 Inhibitor Is Associated with Suppressing Abnormal Expression of Hypoxia-Inducible Factors. THE AMERICAN JOURNAL OF PATHOLOGY 2022; 192:1028-1052. [PMID: 35460614 DOI: 10.1016/j.ajpath.2022.03.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/27/2022] [Accepted: 03/31/2022] [Indexed: 06/14/2023]
Abstract
Diabetic nephropathy (DN), once manifested, is unlikely to completely recover. Factors that influence DN progression were explored by investigating the process of glomerulosclerosis and interstitial fibrosis and chronological changes in glucose, albuminuria, hyperfiltration, and expressions of sodium-glucose cotransporter 2 (SGLT2) and hypoxia-inducible factors (HIFs) up to 50 weeks in inducible cAMP early repressor transgenic mice, a model of severe DN. Long-term intervention with the SGLT2 inhibitor canagliflozin or islet transplantation or heminephrectomy was used. Inducible cAMP early repressor transgenic mice exhibited progressive diabetic glomerulosclerosis and mild interstitial fibrosis, and expressed extensive HIF-1α and HIF-2α in glomerulus and tubules, with sustained hyperfiltration up to 50 weeks. Canagliflozin ameliorated glomerulosclerosis/interstitial fibrosis gradually and reduced HIF overexpression. Islet-transplanted mice exhibited no amelioration. None of the heminephrectomized diabetic mice survived the hyperfiltration overload, but all of the canagliflozin-treated mice survived with re-expressions of HIF-1α and HIF-2α. These results suggest that persistent glomerular hyperfiltration might initiate glomerular injury, and persistent overexpression of HIFs could promote the development of glomerulosclerosis and interstitial fibrosis. Canagliflozin attenuated both changes. Oxidative stress or hypoxia was undetectable in this model. The abnormal expression of HIF-1α and HIF-2α may be a potential therapeutic target for preventing glomerulosclerosis and interstitial fibrosis.
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Affiliation(s)
- Akari Inada
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation (IBRI), Kobe, Japan; Clinical Research Department, Institute of Biomedical Research and Innovation (IBRI), Kobe, Japan.
| | - Oogi Inada
- Diabetes and Genes, Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Kenji Arakawa
- Medical Intelligence Department, Ikuyaku, Integrated Value Development Division, Tanabe Mitsubishi Pharma Corporation, Tokyo, Japan
| | - Yo-Ichi Nabeshima
- Clinical Research Department, Institute of Biomedical Research and Innovation (IBRI), Kobe, Japan
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张 玲, 李 贵, 苏 莉, 杜 磊, 周 东, 程 晓, 林 紫, 曲 伸. [Correlation between total testosterone levels and insulin resistance in patients with acanthosis nigricans and non-acanthosis nigrican]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2021; 41:1780-1786. [PMID: 35012908 PMCID: PMC8752425 DOI: 10.12122/j.issn.1673-4254.2021.12.04] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVE To investigate the correlation of the total testosterone (TT) level with insulin secretion and resistance in patients with acanthosis nigricans (AN) and non-acanthosis nigricans (NAN). METHODS This study was conducted in a total of 639 overweight patients (body mass index ≥24 kg/m2), including 137 female AN patients, 277 female NAN patients, 129 male AN patients, and 146 male NAN patients. Each group was further divided into 4 subgroups according to the quartile of TT level for comparison of insulin secretion and insulin resistance parameters. RESULTS Both female and male patients with AN showed obvious hyperinsulinemia with increased area under the curve for insulin (AUC-INS) (P < 0.05), increased homeostatic model assessment of insulin resistance (HOMA-IR) index (P < 0.05) and decreased whole-body insulin sensitivity index (WBISI) (P < 0.01) as compared with those in NAN groups, but these parameters did not show significant variations with the change of TT levels. In female patients with NAN, insulin secretion level increased progressively as the TT level increased; the AUC-INS increased (P < 0.01) and WBISI decreased significantly (P < 0.05) when the TT levels increased to Q4. In male patients with NAN, insulin secretion level increased progressively as the TT levels decreased, and the AUC-INS increased (P < 0.05) and the WBISI decreased significantly (P < 0.05) when the TT levels decreased to Q1. CONCLUSIONS The TT level has a significant effect on insulin resistance and insulin secretion, but its effect varies between genders and is more significant in NAN patients than in AN patients.
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Affiliation(s)
- 玲 张
- 南京医科大学附属上海十院临床医学院内分泌与代谢病科,上海 200072Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital of Nanjing Medical University, Shanghai 200072, China
- 苏州大学附属常州肿瘤医院内分泌科,江苏 常州 213000Department of Endocrinology, Changzhou Cancer Hospital of Soochow University, Changzhou 213000, China
| | - 贵芳 李
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 莉莉 苏
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 磊 杜
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 东雷 周
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 晓芸 程
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 紫薇 林
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
| | - 伸 曲
- 南京医科大学附属上海十院临床医学院内分泌与代谢病科,上海 200072Department of Endocrinology and Metabolism, Shanghai Tenth People's Hospital of Nanjing Medical University, Shanghai 200072, China
- 同济大学附属第十人民医院内分泌代谢中心,同济大学附属第十人民医院减重糖尿病代谢外科,国家标准化代谢性疾病管理中心(上海市第十人民医院),同济大学医学院肥胖症研究所,上海 200072Endocrinology and Metabolism Center, Department of Metabolic Surgery for Obesity and Diabetes, Tenth People's Hospital of Tongji University; National Metabolic Management Center (Shanghai Tenth People's Hospital), Research Institute of Obesity, Tongji University School of Medicine, Shanghai 200072, China
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Sexual hormones and diabetes: The impact of estradiol in pancreatic β cell. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2021. [PMID: 33832654 DOI: 10.1016/bs.ircmb.2021.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/13/2023]
Abstract
Diabetes is one of the most prevalent metabolic diseases and its incidence is increasing throughout the world. Data from World Health Organization (WHO) point-out that diabetes is a major cause of blindness, kidney failure, heart attacks, stroke and lower limb amputation and estimated 1.6 million deaths were directly caused by it in 2016. Population studies show that the incidence of this disease increases in women after menopause, when the production of estrogen is decreasing in them. Knowing the impact that estrogenic signaling has on insulin-secreting β cells is key to prevention and design of new therapeutic targets. This chapter explores the role of estrogen and their receptors in the regulation of insulin secretion and biosynthesis, proliferation, regeneration and survival in pancreatic β cells. In addition, delves into the genetic animal models developed and its application for the specific study of the different estrogen signaling pathways. Finally, discusses the impact of menopause and hormone replacement therapy on pancreatic β cell function.
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Mauvais-Jarvis F, Le May C, Tiano JP, Liu S, Kilic-Berkmen G, Kim JH. The Role of Estrogens in Pancreatic Islet Physiopathology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1043:385-399. [PMID: 29224104 DOI: 10.1007/978-3-319-70178-3_18] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In rodent models of insulin-deficient diabetes, 17β-estradiol (E2) protects pancreatic insulin-producing β-cells against oxidative stress, amyloid polypeptide toxicity, gluco-lipotoxicity, and apoptosis. Three estrogen receptors (ERs)-ERα, ERβ, and the G protein-coupled ER (GPER)-have been identified in rodent and human β-cells. This chapter describes recent advances in our understanding of the role of ERs in islet β-cell function, nutrient homeostasis, survival from pro-apoptotic stimuli, and proliferation. We discuss why and how ERs represent potential therapeutic targets for the maintenance of functional β-cell mass.
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Affiliation(s)
- Franck Mauvais-Jarvis
- Department of Medicine, Section of Endocrinology and Metabolism, Tulane University Health Sciences Center, School of Medicine, New Orleans, LA, USA.
| | - Cedric Le May
- L'institut du Thorax, INSERM-CNRS, University of Nantes, Nantes, France
| | - Joseph P Tiano
- Diabetes, Endocrinology, and Obesity Branch, NIDDK, Bethesda, MD, USA
| | - Suhuan Liu
- Xiamen Diabetes Institute, the First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Gamze Kilic-Berkmen
- Department of Pediatric, Emory University School of Medicine, Atlanta, GA, USA
| | - Jun Ho Kim
- Department of Food and Biotechnology, Korea University, Sejong, South Korea
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Zhao F, Jiang G, Wei P, Wang H, Ru S. Bisphenol S exposure impairs glucose homeostasis in male zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:794-802. [PMID: 28946120 DOI: 10.1016/j.ecoenv.2017.09.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 09/14/2017] [Accepted: 09/16/2017] [Indexed: 05/27/2023]
Abstract
Bisphenol S (BPS) is a substitute of the plastic additive bisphenol A (BPA). Its concentrations detected in surface waters and urine samples are on the same order of magnitude as BPA. Human exposure to BPA has been implicated in the development of diabetes mellitus; however, whether BPS can disrupt glucose homeostasis and increase blood glucose concentration remains unclear. We extensively investigated the effects of environmentally relevant concentrations of BPS on glucose metabolism in male zebrafish (Danio rerio) and the underlying mechanisms of these effects. Male zebrafish were exposed to 1, 10, or 100μg/L of BPS for 28 d. Fasting blood glucose (FBG) levels, glycogen levels in the liver and muscle, and mRNA levels of key glucose metabolic enzymes and the activities of the encoded proteins in tissues were evaluated to assess the effect of BPS on glucose metabolism. Plasma insulin levels and expression of preproinsulin and glucagon genes in the visceral tissue were also evaluated. Compared with the control group, exposure to 1 and 10μg/L of BPS significantly increased FBG levels but decreased insulin levels. Gluconeogenesis and glycogenolysis in the liver were promoted, and glycogen synthesis in the liver and muscle and glycolysis in the muscle were inhibited. Exposure to 100μg/L of BPS did not significantly alter plasma insulin and blood glucose levels, but nonetheless pronouncedly interfered with gluconeogenesis, glycogenolysis, glycolysis, and glycogen synthesis. Our data indicates that BPS at environmentally relevant concentrations impairs glucose homeostasis of male zebrafish possibly by hampering the physiological effect of insulin; higher BPS doses also pronouncedly interfered with glucose metabolism.
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Affiliation(s)
- Fei Zhao
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003 Shandong Province, PR China
| | - Guobin Jiang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003 Shandong Province, PR China
| | - Penghao Wei
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003 Shandong Province, PR China
| | - Hongfang Wang
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003 Shandong Province, PR China
| | - Shaoguo Ru
- Marine Life Science College, Ocean University of China, 5 Yushan Road, Qingdao, 266003 Shandong Province, PR China.
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Inada A, Fujii NL, Inada O, Higaki Y, Furuichi Y, Nabeshima YI. Effects of 17β-Estradiol and Androgen on Glucose Metabolism in Skeletal Muscle. Endocrinology 2016; 157:4691-4705. [PMID: 27653033 DOI: 10.1210/en.2016-1261] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Diabetes develops predominantly in males in experimental models, and extensive evidence suggests that 17β-estradiol (E2) modulates progression of diabetes in humans. We previously developed a severely diabetic transgenic (Tg) mouse model by β-cell-specific overexpression of inducible cAMP early repressor (ICER) and found that male ICER-Tg mice exhibit sustained severe hyperglycemia, but female ICER-Tg mice gradually became normoglycemic with aging. This implies that differences in circulating androgen and E2 levels might influence skeletal muscle glucose uptake and glycemic status. Here we examined whether a decrease of androgen or E2 excess can improve muscle glucose uptake in hyperglycemic male ICER-Tg mice and, conversely, whether a decrease of E2 or androgen excess can elevate blood glucose levels and impair muscle glucose uptake in normoglycemic female ICER-Tg mice. We treated hyperglycemic male ICER-Tg mice with orchiectomy (ORX) or ORX+E2 pellet implantation and normoglycemic female ICER-Tg mice with ovariectomy (OVX) or OVX+5α-DHT pellet implantation to alter the androgen to E2 ratio. ORX+E2 treatment of male ICER-Tg mice caused a rapid drop in blood glucose via both a dramatic increase of β-cells and significantly improved muscle glucose uptake due to the induction of glucose transporter type 4 (GLUT4) expression and translocation of GLUT4 to the cell membrane. In contrast, OVX+5α-DHT-treated female ICER-Tg mice showed an elevation of blood glucose without any decrease of β-cells; instead, they showed decreased muscle glucose uptake due to decreased activation of serine/threonine-specific protein kinase AKT and GLUT4 expression. These findings suggest that androgen (5α-DHT) promotes insulin resistance in females, whereas E2 improves insulin sensitivity in severely diabetic male mice.
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Affiliation(s)
- Akari Inada
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
| | - Nobuharu L Fujii
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
| | - Oogi Inada
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
| | - Yasuki Higaki
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
| | - Yasuro Furuichi
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
| | - Yo-Ichi Nabeshima
- Laboratory of Molecular Life Science (A.I., Y.N.), Institute of Biomedical Research and Innovation, Kobe 650-0047, Japan; Department of Diabetes and Genes (A.I., O.I.), Advanced Medical Initiatives, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan; Department of Health Promotion Sciences (N.L.F.), Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo 192-0397, Japan; and Faculty of Sports and Health Science (Y.H.) and Institute for Physical Activity (Y.H.), Fukuoka University, Fukuoka 814-0180, Japan
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Mauvais-Jarvis F. Role of Sex Steroids in β Cell Function, Growth, and Survival. Trends Endocrinol Metab 2016; 27:844-855. [PMID: 27640750 PMCID: PMC5116277 DOI: 10.1016/j.tem.2016.08.008] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 08/27/2016] [Accepted: 08/29/2016] [Indexed: 01/08/2023]
Abstract
The gonads have long been considered endocrine glands, producing sex steroids such as estrogens, androgens, and progesterone (P4) for the sole purpose of sexual differentiation, puberty, and reproduction. Reproduction and energy metabolism are tightly linked, however, and gonadal steroids play an important role in sex-specific aspects of energy metabolism in various physiological conditions. In that respect, gonadal steroids also influence the secretion of insulin in a sex-specific manner. This review presents a perspective on the physiological roles of estrogens, androgens, and P4 via their receptors in pancreatic β cells in the gender-specific tuning of insulin secretion. I also discuss potential gender-specific therapeutic avenues that this knowledge may open in the future.
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Affiliation(s)
- Franck Mauvais-Jarvis
- Diabetes Discovery and Gender Medicine Laboratory, Section of Endocrinology and Metabolism, Department of Medicine, Tulane University Health Sciences Center, School of Medicine, New Orleans, LA, USA.
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Inada A, Inada O, Fujii NL, Nagafuchi S, Katsuta H, Yasunami Y, Matsubara T, Arai H, Fukatsu A, Nabeshima YI. Adjusting the 17β-Estradiol-to-Androgen Ratio Ameliorates Diabetic Nephropathy. J Am Soc Nephrol 2016; 27:3035-3050. [PMID: 26940099 PMCID: PMC5042662 DOI: 10.1681/asn.2015070741] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Accepted: 01/14/2016] [Indexed: 12/28/2022] Open
Abstract
Diabetes is manifested predominantly in males in experimental models, and compelling evidence suggests that 17β-estradiol (E2) supplementation improves hyperglycemia in humans. We previously generated a severely diabetic transgenic (Tg) mouse model by β-cell–specific overexpression of inducible cAMP early repressor (ICER) and found that male but not female ICER-Tg mice exhibit sustained hyperglycemia and develop major clinical and pathologic features of human diabetic nephropathy (DN). Thus, we hypothesized that differences in circulating hormone levels have a key role in determining susceptibility to diabetes. Here, we examined whether DN in male ICER-Tg mice is rescued by adjusting the androgen-to-E2 ratio to approximate that in normoglycemic female ICER-Tg mice. We treated hyperglycemic male ICER-Tg mice with orchiectomy (ORX), E2 pellet implantation, or both. E2 pellet implantation at an early stage of DN with or without ORX caused a rapid drop in blood glucose and a dramatic increase in β-cell number, and it markedly inhibited DN progression [namely, E2 reduced glomerulosclerosis, collagen 4 deposition and albuminuria, and prevented hyperfiltration]. Furthermore, E2 pellet implantation was more effective than ORX alone and induced a remarkable improvement, even when initiated at advanced-stage DN. In contrast, induction of normoglycemia by islet transplant in ICER-Tg mice eliminated albuminuria but was less effective than E2 + ORX in reducing glomerulosclerosis, collagen 4 deposition, and hyperfiltration. These findings indicate that E2 treatment is effective, even after establishment of DN, whereas glucose normalization alone does not improve sclerotic lesions. We propose that E2 intervention is a potential therapeutic option for DN.
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Affiliation(s)
- Akari Inada
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Kobe, Japan;
| | - Oogi Inada
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Kobe, Japan; Diabetes and Genes, Advanced Medical Initiatives and
| | - Nobuharu L Fujii
- Health Promotion Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan
| | - Seiho Nagafuchi
- Department of Medical Science and Technology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hitoshi Katsuta
- Department of Medical Science and Technology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Takeshi Matsubara
- Department of Nephrology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hidenori Arai
- Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan; and
| | | | - Yo-Ichi Nabeshima
- Laboratory of Molecular Life Science, Institute of Biomedical Research and Innovation, Kobe, Japan
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Polycystic Ovary Syndrome as a Paradigm for Prehypertension, Prediabetes, and Preobesity. Curr Hypertens Rep 2014; 16:500. [DOI: 10.1007/s11906-014-0500-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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