201
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Li W, Wang C, Zhang M, Wu J, Gu Y, Deng Y, Wang J, Zhang X, Feng J, Chen K, Zhu J, Xie J, Zhang J. Young and old adipocytes have differential influence on the development of osteoblasts. Obes Res Clin Pract 2018; 12:520-527. [DOI: 10.1016/j.orcp.2018.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 06/08/2018] [Accepted: 06/18/2018] [Indexed: 01/13/2023]
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202
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Reddi S, Mada SB, Kumar N, Kumar R, Ahmad N, Karvande A, Kapila S, Kapila R, Trivedi R. Antiosteopenic Effect of Buffalo Milk Casein-Derived Peptide (NAVPITPTL) in Ovariectomized Rats. Int J Pept Res Ther 2018. [DOI: 10.1007/s10989-018-9763-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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203
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Lee DJ, Wu L, Shimono M, Piao Z, Green DW, Lee JM, Jung HS. Differential Mechanism of Periodontitis Progression in Postmenopause. Front Physiol 2018; 9:1098. [PMID: 30246792 PMCID: PMC6113945 DOI: 10.3389/fphys.2018.01098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/23/2018] [Indexed: 01/04/2023] Open
Abstract
Over the past four decades, it has become accepted that periodontal disease is caused by specific bacterial infections and that individuals are uniformly susceptible neither to these infections nor to the damage caused by them. The specific bacterial infections and the composition of the environment in which these bacteria easily settle cause an immune response. The immune cells involved in pathogenesis of periodontitis migrate into the periodontitis lesion and advance the disease. The purpose of the present study is to investigate the correlation between immune cell migration and progression of periodontal disease by inducing estrogen deficiency through ovariectomy (OVX) to mimic postmenopausal women and treatment with lipopolysaccharide (LPS). The LPS derived from Porphyromonas gingivalis induced periodontitis and absorption of the alveolar bone dose-dependently. However, the alveolar crest level reduction after LPS injection between OVX and Sham operated mice did not show a significant difference. Matrix metallopeptidase-9 (MMP-9), which is known to be able to detect the progression of periodontitis in general, was not significantly different between OVX and Sham groups. However, immune cells such as T-lymphocytes and neutrophils migrated less overall in OVX groups than Sham operated groups. These findings can be a topic of debate on the old controversy regarding the relationship between periodontal disease and hormonal change. Currently, in clinical practice, menopause is not a major consideration in the treatment of periodontal disease. This study suggests that treatment methods and medication should be considered in the treatment of infectious periodontal disease in postmenopausal women.
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Affiliation(s)
- Dong-Joon Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Lei Wu
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea.,Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatological Hospital of Guangzhou Medical University, Guangzhou, China
| | - Masaki Shimono
- Department of Pathology, Tokyo Dental College, Chiba, Japan
| | - Zhengguo Piao
- Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatological Hospital of Guangzhou Medical University, Guangzhou, China
| | - David W Green
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jong-Min Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Oral Science Research Center, BK21 PLUS Project, Yonsei University College of Dentistry, Seoul, South Korea.,Applied Oral Biosciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, Hong Kong
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204
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Influence of Menopause on Inflammatory Cytokines during Murine and Human Bone Fracture Healing. Int J Mol Sci 2018; 19:ijms19072070. [PMID: 30013010 PMCID: PMC6073246 DOI: 10.3390/ijms19072070] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/12/2018] [Accepted: 07/15/2018] [Indexed: 12/15/2022] Open
Abstract
Postmenopausal females display a chronic inflammatory phenotype with higher levels of circulating pro-inflammatory cytokines. Furthermore, the inflammatory response to injury may be altered under estrogen-deficiency, because it was shown previously that estrogen-deficient mice displayed increased levels of the inflammatory cytokines Midkine (Mdk) and Interleukin-6 (IL-6) in the early fracture hematoma. Because a balanced immune response to fracture is required for successful bone regeneration, this might contribute to the delayed fracture healing frequently observed in osteoporotic, postmenopausal fracture patients. In this study, we aimed to investigate whether further cytokines in addition to Mdk and IL-6 might be affected by estrogen-deficiency after fracture in mice and whether these cytokines are also relevant during human fracture healing. Additionally, we aimed to investigate whether serum from male vs. female fracture patients affects osteogenic differentiation of human mesenchymal stem cells (MSCs). To address these questions, female mice were either sham-operated or ovariectomized (OVX) and subjected to standardized femur osteotomy. A broad panel of pro- and anti-inflammatory cytokines was determined systemically and locally in the fracture hematoma. In a translational approach, serum was collected from healthy controls and patients with an isolated fracture. Mdk and IL-6 serum levels were determined at day 0, day 14 and day 42 after fracture. Subgroup analysis was performed to investigate differences between male and female fracture patients after menopause. In an in vitro approach, human MSCs were cultured with the collected patient serum and osteogenic differentiation was assessed by qPCR and alkaline-phosphatase staining. Our results suggest an important role for the pro-inflammatory cytokines Mdk and IL-6 in the response to fracture in estrogen-deficient mice among all of the measured inflammatory mediators. Notably, both cytokines were also significantly increased in the serum of patients after fracture. However, only Mdk serum levels differed significantly between male and female fracture patients after menopause. MSCs cultivated with serum from female fracture patients displayed significantly reduced osteogenic differentiation, which was attenuated by Mdk-antibody treatment. In conclusion, our study demonstrated increased Mdk levels after fracture in OVX mice and female fracture patients after menopause. Because Mdk is a negative regulator of bone formation, this might contribute to impaired osteoporotic fracture healing.
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205
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Rainville JR, Tsyglakova M, Hodes GE. Deciphering sex differences in the immune system and depression. Front Neuroendocrinol 2018; 50:67-90. [PMID: 29288680 DOI: 10.1016/j.yfrne.2017.12.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 12/21/2017] [Accepted: 12/22/2017] [Indexed: 02/07/2023]
Abstract
Certain mood disorders and autoimmune diseases are predominately female diseases but we do not know why. Here, we explore the relationship between depression and the immune system from a sex-based perspective. This review characterizes sex differences in the immune system in health and disease. We explore the contribution of gonadal and stress hormones to immune function at the cellular and molecular level in the brain and body. We propose hormonal and genetic sex specific immune mechanisms that may contribute to the etiology of mood disorders.
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Affiliation(s)
- Jennifer R Rainville
- Department of Neuroscience, Virginia Polytechnic Institute and State University, 1981 Kraft Drive, Blacksburg, VA 24060, USA
| | - Mariya Tsyglakova
- Department of Neuroscience, Virginia Polytechnic Institute and State University, 1981 Kraft Drive, Blacksburg, VA 24060, USA; Translational Biology, Medicine, and Health, Virginia Polytechnic Institute and State University, 1 Riverside Circle, Roanoke, VA 24016, USA
| | - Georgia E Hodes
- Department of Neuroscience, Virginia Polytechnic Institute and State University, 1981 Kraft Drive, Blacksburg, VA 24060, USA.
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206
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Garvin AM, Jackson MA, Korzick DH. Inhibition of programmed necrosis limits infarct size through altered mitochondrial and immune responses in the aged female rat heart. Am J Physiol Heart Circ Physiol 2018; 315:H1434-H1442. [PMID: 29957016 DOI: 10.1152/ajpheart.00595.2017] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Both advancing age and estrogen loss exacerbate acute myocardial infarction in the female heart. However, the mechanistic underpinnings of age-related differences in cell death after ischemia-reperfusion (I/R) injury in female subjects and reductions in cardioprotective reserve capacity remain largely unexplored. The aim of the present study was to determine the efficacy of programmed necrosis inhibition on infarct size reduction and preservation of left ventricular (LV) function after I/R injury with female aging. Fischer 344 rats were ovariectomized (OVX) at 15 mo and studied at 24 mo (MO OVX) versus adult rats with intact ovaries (6 mo). After in vivo coronary artery ligation (55-min ischemia and 2- or 6-h reperfusion), necrostatin-1 (Nec-1; 3.5 or 5.7 mg/kg) delivered upon reperfusion significantly reduced infarct size by 37% and improved LV function in the MO OVX group ( P < 0.01). Although age-associated elevations in cyclophilin D and mitochondrial acetylation ( P < 0.001) were unaffected by Nec-1, profound reductions in IL-1, IL-6, and TNF-α ( P < 0.05) as well as cardiac immune cell infiltration were observed in MO OVX but not adult rats. We conclude that chronic inflammation and postmenopausal estrogen deficiency conspire to exacerbate acute infarction through a mechanism involving exaggerated mitochondria-mediated programmed necrosis through receptor-interacting protein 1 signaling. Modulatory effects of programmed necrosis inhibition on proinflammatory cytokine production after I/R reveal a potentially important mechanistic target to restore and preserve cardiac function in the OVX aged female heart. NEW & NOTEWORTHY Myocardial infarct size reduction by inhibition of programmed necrosis in aged female subjects suggests a dominant cell death pathway. Alterations in mitochondrial protein levels and acetylation underscore a mitochondria-dependent mechanism, whereas the profound cytokine reduction in aged subjects alone points to a divergent role for immune modulation of programmed necrosis and viable therapeutic target.
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Affiliation(s)
- Alexandra M Garvin
- Intercollege Graduate Degree Program in Physiology, The Pennsylvania State University , University Park, Pennsylvania
| | - Morgan A Jackson
- Intercollege Graduate Degree Program in Physiology, The Pennsylvania State University , University Park, Pennsylvania
| | - Donna H Korzick
- Intercollege Graduate Degree Program in Physiology, The Pennsylvania State University , University Park, Pennsylvania.,Department of Kinesiology, The Pennsylvania State University , University Park, Pennsylvania
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207
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Adeyanju OA, Soetan OA, Soladoye AO, Olatunji LA. Oral hormonal therapy with ethinylestradiol–levonorgestrel improves insulin resistance, obesity, and glycogen synthase kinase-3 independent of circulating mineralocorticoid in estrogen-deficient rats. Can J Physiol Pharmacol 2018; 96:577-586. [DOI: 10.1139/cjpp-2017-0630] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Estrogen deficiency has been associated with increased incidence of cardiovascular diseases , and recent clinical trials of standard formulations of hormonal therapies have not demonstrated consistent beneficial effects. Estrogen–progestin therapy has been used as exogenous estrogen to normalize depressed estrogen level during menopause. Ovariectomized rodents mimic an estrogen-deficient state in that they develop cardiometabolic dysfunction, including insulin resistance (IR). We therefore hypothesized that hormonal therapy with combined oral contraceptive steroids, ethinylestradiol–levonorgestrel (EEL), improves IR, obesity, and glycogen synthase kinase-3 (GSK-3) through reduction of circulating mineralocorticoid in ovariectomized rats. Twelve-week-old female Wistar rats were divided into 4 groups: sham-operated (SHM) and ovariectomized (OVX) rats were treated with or without EEL (1.0 μg ethinylestradiol and 5.0 μg levonorgestrel) daily for 8 weeks. Results showed that OVX or SHM + EEL treated rats had increased HOMA-IR (homeostatic model assessment of IR), 1 h postload glucose, HOMA-β, triglycerides (TG), total cholesterol (TC), TC/HDL cholesterol, TG/HDL cholesterol, plasma insulin, GSK-3, corticosterone, and aldosterone. On the other hand, OVX + EEL treatment ameliorated all these effects except that of aldosterone. Taken together, the results demonstrate that oral hormonal replacement with EEL improves IR and pancreatic β-cell function and suppresses GSK-3 and glucocorticoid independent of circulating aldosterone, suggesting a positive cardiometabolic effect of oral EEL therapy in estrogen-deficient rats.
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Affiliation(s)
- Oluwaseun A. Adeyanju
- Cardiovascular Research Laboratory, Department of Physiology, University of Ilorin, Ilorin, Nigeria
- Cardiometabolic Research Unit, Department of Physiology, Afe Babalola University, Ado-Ekiti, Ekiti State, Nigeria
| | - Olaniyi A. Soetan
- Cardiovascular Research Laboratory, Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - Ayodele O. Soladoye
- Cardiovascular Research Laboratory, Department of Physiology, University of Ilorin, Ilorin, Nigeria
| | - Lawrence A. Olatunji
- Cardiovascular Research Laboratory, Department of Physiology, University of Ilorin, Ilorin, Nigeria
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208
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Jeong HS, Hong SJ, Choi SJ, Kim JH, Song GG, Jung JH. Effects of oral contraceptives on rheumatoid arthritis in Korean menopausal women: A nationwide cross-sectional study. Maturitas 2018; 112:24-28. [DOI: 10.1016/j.maturitas.2018.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/20/2018] [Accepted: 03/30/2018] [Indexed: 01/21/2023]
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209
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Ohashi T, Kato M, Yamasaki A, Kuwano A, Suzuki H, Kohjima M, Ogawa Y. Effects of high fructose intake on liver injury progression in high fat diet induced fatty liver disease in ovariectomized female mice. Food Chem Toxicol 2018; 118:190-197. [PMID: 29751074 DOI: 10.1016/j.fct.2018.05.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 04/21/2018] [Accepted: 05/04/2018] [Indexed: 12/11/2022]
Abstract
Epidemiology shows that the morbidity of nonalcoholic fatty liver disease (NAFLD) is increased in postmenopausal women and chronic high fructose intake induces NAFLD progression. To analyze the effects of high fructose intake on estrogen deficiency, we evaluated liver disease progression using ovariectomized mice fed with a high fat diet (HFD) for 12 weeks. Hepatic steatosis developed in all HFD groups. Fructose intake significantly increased the liver weight and serum alanine aminotransferase, which was not exacerbated by ovariectomy alone. Ovariectomy enhanced the hepatic inflammatory activity shown by tumor necrosis factor α upregulation in the groups with or without fructose intake. Both fructose intake and ovariectomy increased the hepatocytes with ballooning degeneration and hepatic macrophage infiltration and activated hepatic stellate cells. Coexistence of fructose intake and ovariectomy markedly enhanced liver cell destruction, macrophage accumulation, and progression of fibrosis. Liver damage was ameliorated by 17β-estradiol supplementation. These findings suggest that high fructose intake enhanced the progression of NAFLD in ovariectomized female mice.
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Affiliation(s)
- Tomoko Ohashi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaki Kato
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | - Akihiro Yamasaki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Akifumi Kuwano
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideo Suzuki
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Motoyuki Kohjima
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan; Department of Molecular and Cellular Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; CREST, Japan Agency for Medical Research and Development, Tokyo, Japan
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210
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Zhou Y, Ni X, Wen B, Duan L, Sun H, Yang M, Zou F, Lin Y, Liu Q, Zeng Y, Fu X, Pan K, Jing B, Wang P, Zeng D. Appropriate dose of Lactobacillus buchneri supplement improves intestinal microbiota and prevents diarrhoea in weaning Rex rabbits. Benef Microbes 2018; 9:401-416. [DOI: 10.3920/bm2017.0055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
This study examined the effects on intestinal microbiota and diarrhoea of Lactobacillus buchneri supplementation to the diet of weaning Rex rabbits. To this end, rabbits were treated with L. buchneri at two different doses (LC: 104 cfu/g diet and HC: 105 cfu/g diet) for 4 weeks. PCR-DGGE was used to determine the diversity of the intestinal microbiota, while real-time PCR permitted the detection of individual bacterial species. ELISA and real-time PCR allowed the identification of numerous cytokines in the intestinal tissues. Zonula occludens-1, polymeric immunoglobulin receptor and immunoglobulin A genes were examined to evaluate intestinal barriers. Results showed that the biodiversity of the intestinal microbiota of weaning Rex rabbits improved in the whole tract of the treated groups. The abundance of most detected bacterial species was highly increased in the duodenum, jejunum and ileum after L. buchneri administration. The species abundance in the HC group was more increased than in the LC group when compared to the control. Although the abundance of Enterobacteriaceae exhibited a different pattern, Escherichia coli was inhibited in all treatment groups. Toll-like receptor (TLR)2 and TLR4 genes were down-regulated in all intestinal tissues as the microbiota changed. In the LC group, the secretion of the inflammatory cytokine tumour necrosis factor-α was reduced, the gene expression of the anti-inflammatory cytokine interleukin (IL)-4 was up-regulated and the expression of intestinal-barrier-related genes was enhanced. Conversely, IL-4 expression was increased and the expression of other tested genes did not change in the HC group. The beneficial effects of LC were greater than those of HC or the control in terms of improving the daily weight gain and survival rate of weaning Rex rabbits and reducing their diarrhoea rate. Therefore, 104 cfu/g L. buchneri treatment improved the microbiota of weaning Rex rabbits and prevented diarrhoea in these animals.
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Affiliation(s)
- Y. Zhou
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - X. Ni
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan 611130, China P.R
| | - B. Wen
- Sichuan Academy of Grassland Science, Chengdu, Sichuan 611731, China P.R
| | - L. Duan
- Qu Country Extension Station for Husbandry Technology, Dazhou, Sichuan 635299, China P.R
| | - H. Sun
- Ya’an City Bureau of Agriculture, Ya’an, Sichuan 625099, China P.R
| | - M. Yang
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - F. Zou
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - Y. Lin
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - Q. Liu
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - Y. Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
| | - X. Fu
- Sichuan Academy of Grassland Science, Chengdu, Sichuan 611731, China P.R
| | - K. Pan
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan 611130, China P.R
| | - B. Jing
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan 611130, China P.R
| | - P. Wang
- Sichuan Academy of Grassland Science, Chengdu, Sichuan 611731, China P.R
| | - D. Zeng
- Animal Microecology Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Huiming Road 211, Chengdu, Sichuan 611130, China P.R
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu, Sichuan 611130, China P.R
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211
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Abstract
Osteoporosis, characterized by low bone mass and micro-architectural deterioration of bone tissue with increased risk of fracture, can be categorized into two forms: primary and secondary, depending on whether it occurs as part of the natural aging process (estrogen deficiency) or as part of disease pathology. In both forms bone loss is due to an imbalance in the bone remodeling process, with resorption/formation skewed more toward bone loss. Recent studies and emerging evidence consistently demonstrate the potential of the intestinal microbiota to modulate bone health. This review discusses the process of bone remodeling and the pathology of osteoporosis and introduces the intestinal microbiota and its potential to influence bone health. In particular, we highlight recent murine studies that examine how probiotic supplementation can both increase bone density in healthy individuals and protect against primary (estrogen deficiency) as well as secondary osteoporosis. Potential mechanisms are described to account for how probiotic treatments could be exerting their beneficial effect on bone health.
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212
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Zhu S, He H, Gao C, Luo G, Xie Y, Wang H, Tian L, Chen X, Yu X, He C. Ovariectomy-induced bone loss in TNFα and IL6 gene knockout mice is regulated by different mechanisms. J Mol Endocrinol 2018; 60:185-198. [PMID: 29339399 DOI: 10.1530/jme-17-0218] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 01/15/2018] [Indexed: 02/05/2023]
Abstract
We examined the effects of tumor necrosis factor-α (TNFα) and interleukin-6 (IL6) gene knockout in preserving the bone loss induced by ovariectomy (OVX) and the mechanisms involved in bone metabolism. Twenty female wild-type (WT), TNFα-knockout (TNFα-/-) or IL6-knockout (IL6-/-) mice aged 12 weeks were sham-operated (SHAM) or subjected to OVX and killed after 4 weeks. Bone mass and skeletal microarchitecture were determined using micro-CT. Bone marrow stromal cells (BMSCs) from all three groups (WT, TNFα-/- and IL6-/-) were induced to differentiate into osteoblasts or osteoclasts and treated with 17-β-estradiol. Bone metabolism was assessed by histological analysis, serum analyses and qRT-PCR. OVX successfully induced a high turnover in all mice, but a repair effect was observed in TNFα-/- and IL6-/- mice. The ratio of femoral trabecular bone volume to tissue volume, trabecular number and trabecular thickness were significantly decreased in WT mice subjected to OVX, but increased in TNFα-/- mice (1.62, 1.34, 0.27-fold respectively; P < 0.01) and IL6-/- mice (1.34, 0.80, 0.22-fold respectively; P < 0.01). Furthermore, we observed a 29.6% increase in the trabecular number in TNFα-/- mice when compared to the IL6-/- mice. Both, TNFα-/- and IL6-/- BMSCs exhibited decreased numbers of TRAP-positive cells and an increase in ALP-positive cells, with or without E2 treatment (P < 0.05). While the knockout of TNFα or IL6 significantly upregulated mRNA expressions of osteoblast-related genes (Runx2 and Col1a1) and downregulated osteoclast-related mRNA for TRAP, MMP9 and CTSK in vivo and in vitro, TNFα knockout appeared to have roles beyond IL6 knockout in upregulating Col1a1 mRNA expression and downregulating mRNA expressions of WNT-related genes (DKK1 and Sost) and TNF-related activation-induced genes (TRAF6). TNFα seemed to be more potentially invasive in inhibiting bone formation and enhancing TRAF6-mediated osteoclastogenesis than IL6, implying that the regulatory mechanisms of TNFα and IL6 in bone metabolism may be different.
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Affiliation(s)
- Siyi Zhu
- Rehabilitation Medicine CenterWest China Hospital, Sichuan University, Chengdu, China
- Rehabilitation Key Laboratory of Sichuan ProvinceWest China Hospital, Sichuan University, Chengdu, China
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Hongchen He
- Rehabilitation Medicine CenterWest China Hospital, Sichuan University, Chengdu, China
| | - Chengfei Gao
- Rehabilitation Medicine CenterWest China Hospital, Sichuan University, Chengdu, China
- Rehabilitation Key Laboratory of Sichuan ProvinceWest China Hospital, Sichuan University, Chengdu, China
- Institute for Disaster Management and ReconstructionSichuan University-The Hong Kong Polytechnic University, Chengdu, China
| | - Guojing Luo
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Ying Xie
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Haiming Wang
- Rehabilitation Medicine CenterWest China Hospital, Sichuan University, Chengdu, China
- Rehabilitation Key Laboratory of Sichuan ProvinceWest China Hospital, Sichuan University, Chengdu, China
| | - Li Tian
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Chen
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xijie Yu
- Laboratory of Endocrinology and MetabolismDepartment of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, China
| | - Chengqi He
- Rehabilitation Medicine CenterWest China Hospital, Sichuan University, Chengdu, China
- Rehabilitation Key Laboratory of Sichuan ProvinceWest China Hospital, Sichuan University, Chengdu, China
- Institute for Disaster Management and ReconstructionSichuan University-The Hong Kong Polytechnic University, Chengdu, China
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213
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Pedersen AL, Brownrout JL, Saldanha CJ. Neuroinflammation and neurosteroidogenesis: Reciprocal modulation during injury to the adult zebra finch brain. Physiol Behav 2018; 187:51-56. [DOI: 10.1016/j.physbeh.2017.10.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 10/11/2017] [Accepted: 10/11/2017] [Indexed: 01/10/2023]
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214
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Rollick NC, Lemmex DB, Ono Y, Reno CR, Hart DA, Lo IK, Thornton GM. Gene-expression changes in knee-joint tissues with aging and menopause: implications for the joint as an organ. Clin Interv Aging 2018. [PMID: 29535510 PMCID: PMC5840269 DOI: 10.2147/cia.s151453] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Background When considering the “joint as an organ”, the tissues in a joint act as complementary components of an organ, and the “set point” is the cellular activity for homeostasis of the joint tissues. Even in the absence of injury, joint tissues have adaptive responses to processes, like aging and menopause, which result in changes to the set point. Purpose The purpose of this study in a preclinical model was to investigate age-related and menopause-related changes in knee-joint tissues with the hypothesis that tissues will change in unique ways that reflect their differing contributions to maintaining joint function (as measured by joint laxity) and the differing processes of aging and menopause. Methods Rabbit knee-joint tissues from three groups were evaluated: young adult (gene expression, n=8; joint laxity, n=7; water content, n=8), aging adult (gene expression, n=6; joint laxity, n=7; water content, n=5), and menopausal adult (gene expression, n=8; joint laxity, n=7; water content, n=8). Surgical menopause was induced with ovariohysterectomy surgery and gene expression was assessed using reverse-transcription quantitative polymerase chain reaction. Results Aging resulted in changes to 37 of the 150 gene–tissue combinations evaluated, and menopause resulted in changes to 39 of the 150. Despite the similar number of changes, only eleven changes were the same in both aging and menopause. No differences in joint laxity were detected comparing young adult rabbits with aging adult rabbits or with menopausal adult rabbits. Conclusion Aging and menopause affected the gene-expression patterns of the tissues of the knee joint differently, suggesting unique changes to the set point of the knee. Interestingly, aging and menopause did not affect knee-joint laxity, suggesting that joint function was maintained, despite changes in gene expression. Taken together, these findings support the theory of the joint as an organ where the tissues of the joint adapt to maintain joint function.
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Affiliation(s)
- Natalie C Rollick
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Devin B Lemmex
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Yohei Ono
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada.,Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Carol R Reno
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - David A Hart
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Ian Ky Lo
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Gail M Thornton
- McCaig Institute for Bone and Joint Health, Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada.,Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada
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215
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Collins FL, Rios-Arce ND, Atkinson S, Bierhalter H, Schoenherr D, Bazil JN, McCabe LR, Parameswaran N. Temporal and regional intestinal changes in permeability, tight junction, and cytokine gene expression following ovariectomy-induced estrogen deficiency. Physiol Rep 2018; 5:5/9/e13263. [PMID: 28468850 PMCID: PMC5430124 DOI: 10.14814/phy2.13263] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 03/29/2017] [Accepted: 04/03/2017] [Indexed: 12/12/2022] Open
Abstract
Estrogen deficiency that occurs during menopause is associated with wide‐ranging consequences, including effects on the gastrointestinal system. Although previous studies have implicated a role for estrogen in modulating colonic permeability and inflammatory gene expression, the kinetics of these changes following loss of estrogen and whether they are intestinal region specific are unknown. To test this, we performed sham or ovariectomy (OVX) surgery in BALB/c mice and examined permeability (in vivo and ex vivo) and gene expression changes in the duodenum, jejunum, ileum, and colon at 1, 4, and 8 weeks postsurgery. In vivo permeability, assessed by FITC‐dextran gavage and subsequent measures of serum levels, indicated that OVX significantly increased whole intestinal permeability 1 week postsurgery before returning to sham levels at 4 and 8 weeks. Permeability of individual intestinal sections, measured ex vivo by Ussing chambers, revealed specific regional and temporal responses to OVX, with the most dynamic changes exhibited by the ileum. Analysis of gene expression, by qPCR and by mathematical modeling, revealed an OVX‐specific effect with tight junction and inflammatory gene expression elevated and suppressed with both temporal and regional specificity. Furthermore, ileal and colonic expression of the tight junction protein occludin was found to be significantly correlated with expression of TNFα and IL‐1β. Together, our studies reveal previously unappreciated effects of estrogen deficiency in specific intestinal segments and further demonstrate temporal links between estrogen deficiency, inflammatory genes, and intestinal permeability.
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Affiliation(s)
- Fraser L Collins
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Naiomy D Rios-Arce
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Shelby Atkinson
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Hayley Bierhalter
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Daniel Schoenherr
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Jason N Bazil
- Department of Physiology, Michigan State University, East Lansing, Michigan
| | - Laura R McCabe
- Department of Physiology, Michigan State University, East Lansing, Michigan .,Department of Radiology, Michigan State University, East Lansing, Michigan.,Biomedical Imaging Research Centre, Michigan State University, East Lansing, Michigan
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216
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Kodama R, Muraki S, Iidaka T, Oka H, Teraguchi M, Kagotani R, Asai Y, Hashizume H, Yoshida M, Kawaguchi H, Nakamura K, Akune T, Tanaka S, Yoshimura N. Serum levels of matrix metalloproteinase-3 and autoantibodies related to rheumatoid arthritis in the general Japanese population and their association with osteoporosis and osteoarthritis: the ROAD study. J Bone Miner Metab 2018; 36:246-253. [PMID: 28365812 DOI: 10.1007/s00774-017-0834-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/12/2017] [Indexed: 10/19/2022]
Abstract
To purpose of this study was to reveal the mean levels and positive proportion of serological markers related to rheumatoid arthritis, and clarify their relationship with osteoporosis and hand osteoarthritis (OA). A total of 1546 participants from the third survey of the research on osteoarthritis/osteoporosis against disability study were enrolled in the current study. Using participant blood samples, the levels of anti-cyclic citrullinated protein (CCP) antibody, rheumatoid factor (RF), matrix metalloproteinase-3 (MMP-3), C-reactive protein (CRP), and high-sensitivity CRP (hsCRP) were measured. Subjects with higher than normal levels were defined as being positive. Osteoporosis was defined according to the recommendations set by World Health Organization criteria in 1994. Radiographic hand OA was evaluated using the modified Kellgren-Lawrence (KL) scale. The positive proportion of anti-CCP antibody, RF, MMP-3, CRP, and hsCRP was 1.8, 7.1, 15.0, 6.7, and 6.4%, respectively. MMP-3 was associated with age, and was significantly higher in men than in women. Positive MMP-3 was not significantly related to osteoporosis or severe hand OA (KL grade ≥3) after adjustment for other factors including age, sex, and body mass index. The results from this study clarified the values and positive proportion of RA-related markers and revealed their relationship with osteoporosis and hand OA.
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Affiliation(s)
- Rie Kodama
- Department of Orthopedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Shigeyuki Muraki
- Department of Joint Disease Research, 22nd Century Medical and Research Center, Faculty of Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Toshiko Iidaka
- Department of Joint Disease Research, 22nd Century Medical and Research Center, Faculty of Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Hiroyuki Oka
- Department of Medical Research and Management for Musculoskeletal Pain, 22nd Century Medical and Research Center, Faculty of Medicine, The University of Tokyo, Tokyo, Japan
| | - Masatoshi Teraguchi
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Ryohei Kagotani
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Yoshiki Asai
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hiroshi Hashizume
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Munehito Yoshida
- Department of Orthopedic Surgery, Wakayama Medical University, Wakayama, Japan
| | - Hiroshi Kawaguchi
- Department of Orthopedic Surgery, Japan Community Healthcare Organization Tokyo Shinjuku Medical Center, Tokyo, Japan
| | - Kozo Nakamura
- National Rehabilitation Center for Persons with Disabilities, Saitama, Japan
| | - Toru Akune
- National Rehabilitation Center for Persons with Disabilities, Saitama, Japan
| | - Sakae Tanaka
- Department of Orthopedic Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Noriko Yoshimura
- Department of Joint Disease Research, 22nd Century Medical and Research Center, Faculty of Medicine, Graduate School of Medicine, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-8655, Japan.
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217
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Xiong G, Lingampalli N, Koltsov JC, Leung LL, Bhutani N, Robinson WH, Chu CR. Men and Women Differ in the Biochemical Composition of Platelet-Rich Plasma. Am J Sports Med 2018; 46:409-419. [PMID: 29211968 PMCID: PMC8487642 DOI: 10.1177/0363546517740845] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Autologous platelet-rich plasma (PRP) is widely used for a variety of clinical applications. However, clinical outcome studies have not consistently shown positive effects. The composition of PRP differs based on many factors. An improved understanding of factors influencing the composition of PRP is important for the optimization of PRP use. HYPOTHESIS Age and sex influence the PRP composition in healthy patients. STUDY DESIGN Controlled laboratory study. METHODS Blood from 39 healthy patients was collected at a standardized time and processed into leukocyte-poor PRP within 1 hour of collection using the same laboratory centrifuge protocol and frozen for later analysis. Eleven female and 10 male patients were "young" (aged 18-30 years), while 8 male and 10 female patients were "older" (aged 45-60 years). Thawed PRP samples were assessed for cytokine and growth factor levels using a multiplex assay and enzyme-linked immunosorbent assay. The platelet count and high-sensitivity C-reactive protein levels were measured. Two-way analysis of variance determined age- and sex-based differences. RESULTS Platelet and high-sensitivity C-reactive protein concentrations were similar in PRP between the groups ( P = .234). Male patients had higher cytokine and growth factor levels in PRP compared with female patients for inflammatory cytokines such as interleukin-1 beta (IL-1β) (9.83 vs 7.71 pg/mL, respectively; P = .008) and tumor necrosis factor-alpha (TNF-α) (131.6 vs 110.5 pg/mL, respectively; P = .048); the anti-inflammatory IL-1 receptor antagonist protein (IRAP) (298.0 vs 218.0 pg/mL, respectively; P < .001); and growth factors such as fibroblast growth factor-basic (FGF-basic) (237.9 vs 194.0 pg/mL, respectively; P = .01), platelet-derived growth factor (PDGF-BB) (3296.2 vs 2579.3 pg/mL, respectively; P = .087), and transforming growth factor-beta 1 (TGF-β1) (118.8 vs 92.8 ng/mL, respectively; P = .002). Age- but not sex-related differences were observed for insulin-like growth factor-1 (IGF-1) ( P < .001). Age and sex interaction terms were not significant. While mean differences were significant, there was also substantial intragroup variability. CONCLUSION This study in healthy patients shows differences in the composition of PRP between men and women, with sex being a greater factor than age. There was also proteomic variability within the groups. These data support a personalized approach to PRP treatment and highlight the need for a greater understanding of the relationships between proteomic factors in PRP and clinical outcomes. CLINICAL RELEVANCE Variability in the proteomic profile of PRP may affect tissue and clinical responses to treatment. These data suggest that clinical studies should account for the composition of PRP used.
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Affiliation(s)
- Grace Xiong
- Department of Orthopaedic Surgery, Stanford University
School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo
Alto, California, USA
| | - Nithya Lingampalli
- Veterans Affairs Palo Alto Health Care System, Palo
Alto, California, USA
- Division of Immunology and Rheumatology, Department
of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Jayme C.B. Koltsov
- Department of Orthopaedic Surgery, Stanford University
School of Medicine, Stanford, California, USA
| | - Lawrence L. Leung
- Veterans Affairs Palo Alto Health Care System, Palo
Alto, California, USA
- Division of Hematology, Department of Medicine,
Stanford University School of Medicine, Stanford, California, USA
| | - Nidhi Bhutani
- Department of Orthopaedic Surgery, Stanford University
School of Medicine, Stanford, California, USA
| | - William H. Robinson
- Veterans Affairs Palo Alto Health Care System, Palo
Alto, California, USA
- Division of Immunology and Rheumatology, Department
of Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Constance R. Chu
- Department of Orthopaedic Surgery, Stanford University
School of Medicine, Stanford, California, USA
- Veterans Affairs Palo Alto Health Care System, Palo
Alto, California, USA
- Address correspondence to Constance R. Chu, MD,
Department of Orthopaedic Surgery, Stanford University School of Medicine, 450
Broadway Street, MC 6342, Redwood City, CA 94063, USA
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Liao L, Yu Y, Shao B, Su X, Wang H, Kuang H, Jing H, Situai Y, Yang D, Jin Y. Redundant let‐7a suppresses the immunomodulatory properties of BMSCs by inhibiting the Fas/FasL system in osteoporosis. FASEB J 2018; 32:1982-1992. [DOI: 10.1096/fj.201700885r] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Li Liao
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical UniversityXi'anChina
- Xi'an Institute of Tissue Engineering and Regenerative MedicineXiœanChina
| | - Yang Yu
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Bingyi Shao
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Xiaoxia Su
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine ResearchCollege of Stomatology, Xi'an Jiaotong UniversityXi'anChina
| | - Han Wang
- Department of StomatologyThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhouChina
| | - Huijuan Kuang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical UniversityXi'anChina
- Xi'an Institute of Tissue Engineering and Regenerative MedicineXiœanChina
| | - Huan Jing
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical UniversityXi'anChina
- Xi'an Institute of Tissue Engineering and Regenerative MedicineXiœanChina
| | - Yi Situai
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical UniversityXi'anChina
- Department of StomatologyNanjing General Hospital of Nanjing Military Command, People's Liberation ArmyNanjingChina
| | - Deqin Yang
- Department of EndodonticsStomatological Hospital of Chongqing Medical UniversityChongqingChina
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqingChina
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqingChina
| | - Yan Jin
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral DiseasesShaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, The Fourth Military Medical UniversityXi'anChina
- Xi'an Institute of Tissue Engineering and Regenerative MedicineXiœanChina
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219
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Zidon TM, Park YM, Welly RJ, Woodford ML, Scroggins RJ, Britton SL, Koch LG, Booth FW, Padilla J, Kanaley JA, Vieira-Potter VJ. Voluntary wheel running improves adipose tissue immunometabolism in ovariectomized low-fit rats. Adipocyte 2018; 7:20-34. [PMID: 29226756 DOI: 10.1080/21623945.2017.1402991] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Loss of ovarian hormones is associated with increased adiposity, white adipose tissue (WAT) inflammation, and insulin resistance (IR). Previous work demonstrated ovariectomized (OVX) rats bred for high aerobic fitness (HCR) are protected against weight gain and IR compared to rats bred for low aerobic fitness (LCR) yet wheel running prevents OVX-induced IR in LCR rats. The purpose of this study was to determine whether adipose tissue immunometabolic characteristics from female HCR and LCR rats differs before or after OVX, and whether wheel running mitigates OVX-induced adipose tissue immunometabolic changes in LCR rats. Female OVX HCR and LCR rats were all fed a high fat diet (HFD) (n = 7-8/group) and randomized to either a running wheel or remain sedentary for 11 weeks. Ovary-intact rats (n = 7-12/group) were fed a standard chow diet with no wheel. Ovary-intact LCR rats had a greater visceral WAT inflammatory profile compared to HCR. Following OVX, sedentary LCR rats had greater serum leptin (p<0.001) and WAT inflammation (p<0.05) than sedentary HCR. Wheel running normalized the elevated serum leptin and reduced both visceral (p<0.05) and subcutaneous (p<0.03) WAT inflammatory markers in the LCR rats. Paradoxically, wheel running increased some markers of WAT inflammation in OVX HCR rats (p<0.05), which correlated with observed weight gain. Taken together, HCR rats appear to have a healthier WAT immune and metabolic profile compared to LCR, even following OVX. Wheel running improves WAT health in previously sedentary LCR rats. On the other hand, increased WAT inflammation is associated with adiposity gain despite a high volume of wheel running in HCR rats.
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Affiliation(s)
- Terese M. Zidon
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Young-Min Park
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Rebecca J. Welly
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Makenzie L. Woodford
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Rebecca J. Scroggins
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
| | - Steven L. Britton
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, US
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI, US
| | - Lauren G. Koch
- Department of Anesthesiology, University of Michigan Medical School, Ann Arbor, MI, US
| | - Frank W. Booth
- Department of Biomedical Sciences, University of Missouri, Columbia, MO, US
| | - Jaume Padilla
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
- Department of Child Health, University of Missouri, Columbia, MO, US
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, US
| | - Jill A. Kanaley
- Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, US
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220
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Pócs L, Janovszky Á, Garab D, Terhes G, Ocsovszki I, Kaszaki J, Boros M, Piffkó J, Szabó A. Estrogen-dependent efficacy of limb ischemic preconditioning in female rats. J Orthop Res 2018; 36:97-105. [PMID: 28561381 DOI: 10.1002/jor.23621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 05/19/2017] [Indexed: 02/04/2023]
Abstract
Our aim was to examine the effects of ischemic preconditioning (IPC) on the local periosteal and systemic inflammatory consequences of hindlimb ischemia-reperfusion (IR) in Sprague-Dawley rats with chronic estrogen deficiency (13 weeks after ovariectomy, OVX) in the presence and absence of chronic 17beta-estradiol supplementation (E2, 20 µg kg-1 , 5 days/week for 5 weeks); sham-operated (non-OVX) animals served as controls. As assessed by intravital fluorescence microscopy, rolling and the firm adhesion of polymorphonuclear neutrophil leukocytes (PMNs) gave similar results in the Sham + IR and OVX + IR groups in the tibial periosteal microcirculation during the 3-h reperfusion period after a 60-min tourniquet ischemia. Postischemic increases in periosteal PMN adhesion and PMN-derived adhesion molecule CD11b expressions, however, were significantly reduced by IPC (two cycles of 10'/10') in Sham animals, but not in OVX animals; neither plasma free radical levels (as measured by chemiluminescence), nor TNF-alpha release was affected by IPC. E2 supplementation in OVX animals restored the IPC-related microcirculatory integrity and PMN-derived CD11b levels, and TNF-alpha and free radical levels were reduced by IPC only with E2. An enhanced estrogen receptor beta expression could also be demonstrated after E2 in the periosteum. Overall, the beneficial periosteal microcirculatory effects of limb IPC are lost in chronic estrogen deficiency, but they can be restored by E2 supplementation. This suggests that the presence of endogenous estrogen is a necessary facilitating factor of the anti-inflammatory protection provided by limb IPC in females. The IPC-independent effects of E2 on inflammatory reactions should also be taken into account in this model. © 2017 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 36:97-105, 2018.
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Affiliation(s)
- Levente Pócs
- Department of Traumatology and Hand Surgery, Bács-Kiskun County Teaching Hospital, Kecskemét, Hungary
| | - Ágnes Janovszky
- Department of Oral and Maxillofacial Surgery, University of Szeged, Szeged, Hungary
| | - Dénes Garab
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Gabriella Terhes
- Institute of Clinical Microbiology, University of Szeged, Szeged, Hungary
| | - Imre Ocsovszki
- Department of Biochemistry, University of Szeged, Szeged, Hungary
| | - József Kaszaki
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Mihály Boros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - József Piffkó
- Department of Oral and Maxillofacial Surgery, University of Szeged, Szeged, Hungary
| | - Andrea Szabó
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
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221
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Maas AHEM. Vasospastic angina behaves differently in men and women. Int J Cardiol 2017; 249:79-80. [PMID: 29121763 DOI: 10.1016/j.ijcard.2017.09.018] [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: 07/10/2017] [Revised: 08/23/2017] [Accepted: 09/06/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Angela H E M Maas
- Women's Cardiac Health Program, Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands.
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222
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Estrogen receptor 1 (ESR1) regulates VEGFA in adipose tissue. Sci Rep 2017; 7:16716. [PMID: 29196658 PMCID: PMC5711936 DOI: 10.1038/s41598-017-16686-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 11/15/2017] [Indexed: 02/07/2023] Open
Abstract
Vascular endothelial growth factor A (VEGFA) is a key factor in the regulation of angiogenesis in adipose tissue. Poor vascularization during adipose tissue proliferation causes fibrosis and local inflammation, and is associated with insulin resistance. It is known that 17-beta estradiol (E2) regulates adipose tissue function and VEGFA expression in other tissues; however, the ability of E2 to regulate VEGFA in adipose tissue is currently unknown. In this study, we showed that, in 3T3-L1 cells, E2 and the estrogen receptor 1 (ESR1) agonist PPT induced VEGFA expression, while ESR1 antagonist (MPP), and selective knockdown of ESR1 using siRNA decreased VEGFA and prevented the ability of E2 to modulate its expression. Additionally, we found that E2 and PPT induced the binding of hypoxia inducible factor 1 alpha subunit (HIF1A) in the VEGFA gene promoter. We further found that VEGFA expression was lower in inguinal and gonadal white adipose tissues of ESR1 total body knockout female mice compared to wild type mice. In conclusion, our data provide evidence of an important role for E2/ESR1 in modulating adipose tissue VEGFA, which is potentially important to enhance angiogenesis, reduce inflammation and improve adipose tissue function.
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223
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Nyuyki CK, Ngufor G, Mbeh G, Mbanya JC. Epidemiology of hypertension in Fulani indigenous populations-age, gender and drivers. JOURNAL OF HEALTH, POPULATION, AND NUTRITION 2017; 36:35. [PMID: 29126458 PMCID: PMC5681807 DOI: 10.1186/s41043-017-0112-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/30/2017] [Indexed: 06/07/2023]
Abstract
BACKGROUND Hypertension is a public health problem and the main contributor to cardiovascular mortality and morbidity. Little is known about hypertension among the minority, diverse and socially disadvantaged 23-24 million Fulani/Peul populations dispersed in West, Central and East Africa, undergoing a transition from traditional to transitional and modern lifestyle. This study describes age and gender variations in blood pressure and drivers of hypertension among rural Fulani population of Cameroon. METHODS We analysed population-based cross-sectional data collected in 2013 by standard methods from 1337 Fulani/Peul aged ≥ 20 years. Hypertension was defined as systolic blood pressure (SBP) ≥ 140 mmHg and/or diastolic blood pressure ≥ 90 mmHg or current use of anti-hypertensive medication. We elucidated the occurrence and drivers of hypertension by chi-square test, Student's t test and univariate and multivariable logistic regression models. RESULTS The prevalence of hypertension was 31.1% (men 36.5% and women 28.7%). Systolic and diastolic blood pressure increased with age. Older women suffered more from grades 1, 2 and 3 hypertension than older men. Old age, divorced/separated, never attended school, current/former smoker, family history (FH) of hypertension, diabetic, underweight and substantially increased risk from waist circumference were independently associated with hypertension. Insomnia and had 8-12 children were the only drivers of hypertension among men. CONCLUSION Prevalence of hypertension was high. Awareness and control were low. Hypertension prevalence increased with age and was more prevalent among men than women. Older women experienced severe hypertension more than older men. Culturally embedded interventions are warranted to curb the high burden of hypertension among the Fulani.
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Affiliation(s)
- Clement Kufe Nyuyki
- Medical Research Council/University of the Witwatersrand, Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - George Ngufor
- Health of Populations in Transition (HoPiT) Research Group, Department of Medicine and Specialities, Faculty of Medicine and Biomedical Sciences, The University of Yaoundé 1, Yaoundé, Cameroon
| | - George Mbeh
- Health of Populations in Transition (HoPiT) Research Group, Department of Medicine and Specialities, Faculty of Medicine and Biomedical Sciences, The University of Yaoundé 1, Yaoundé, Cameroon
| | - Jean Claude Mbanya
- Health of Populations in Transition (HoPiT) Research Group, Department of Medicine and Specialities, Faculty of Medicine and Biomedical Sciences, The University of Yaoundé 1, Yaoundé, Cameroon
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Campbell B, Davis SR, Abramson MJ, Mishra G, Handelsman DJ, Perret JL, Dharmage SC. Menopause, lung function and obstructive lung disease outcomes: a systematic review. Climacteric 2017; 21:3-12. [DOI: 10.1080/13697137.2017.1392504] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- B. Campbell
- Allergy and Lung Health Unit, Centre for Epidemiology & Biostatistics, Melbourne School of Population & Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - S. R. Davis
- School of Public Health & Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - M. J. Abramson
- School of Public Health & Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - G. Mishra
- School of Public Health, The University of Queensland, Brisbane, Australia
| | - D. J. Handelsman
- ANZAC Research Institute, University of Sydney, Concord Hospital, Concord, NSW, Australia
| | - J. L. Perret
- Allergy and Lung Health Unit, Centre for Epidemiology & Biostatistics, Melbourne School of Population & Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - S. C. Dharmage
- Allergy and Lung Health Unit, Centre for Epidemiology & Biostatistics, Melbourne School of Population & Global Health, The University of Melbourne, Melbourne, VIC, Australia
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225
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Choi JE, Park Y. EPA and DHA, but not ALA, have antidepressant effects with 17β-estradiol injection via regulation of a neurobiological system in ovariectomized rats. J Nutr Biochem 2017; 49:101-109. [DOI: 10.1016/j.jnutbio.2017.07.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 06/28/2017] [Accepted: 07/19/2017] [Indexed: 12/29/2022]
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226
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Schüller ÁK, Mena Canata DA, Hackenhaar FS, Engers VK, Heemann FM, Putti JS, Salomon TB, Benfato MS. Effects of lipoic acid and n-3 long-chain polyunsaturated fatty acid on the liver ovariectomized rat model of menopause. Pharmacol Rep 2017; 70:263-269. [PMID: 29475009 DOI: 10.1016/j.pharep.2017.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 09/26/2017] [Accepted: 10/17/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND Bilateral ovariectomy is an experimental model used to analyse the effects of menopause and develop strategies to mitigate the deleterious effects of this condition. Supplementation of the diet with antioxidants has been used to reduce potential oxidative stress caused by menopause. The purpose of the study was to analyse the effects of α-lipoic acid (LA), docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), dietary supplementation on oxidative stress in the livers of ovariectomized rats. METHODS In this study, we evaluated the effect of dietary supplementation with LA, DHA and EPA for a period of 16 weeks on oestrogen levels and oxidative stress biomarkers in the livers of ovariectomized 25 three-month-old rats. RESULTS Serum oestrogen levels were lower after ovariectomy but were not altered by dietary treatments. LA was capable of acting in the liver, recovering the activity of the antioxidant enzymes superoxide dismutase and glutathione peroxidase, and reducing protein oxidative damage. Moreover, LA supplementation reduced nitrite and nitrate levels. DHA and EPA recovered the antioxidant activity of cytosolic and mitochondrial superoxide dismutase, decreasing protein oxidation. Protection against lipid oxidation differed between treatments. The DHA-treated group showed increased levels of the lipid peroxidation biomarker malondialdehyde compared to the ovariectomized group. However, malondialdehyde levels were not altered by EPA treatment. CONCLUSIONS The results suggest that the antioxidant response varies among evaluated supplementations and all supplements were able to alter enzymatic and non-enzymatic antioxidants in the livers of ovariectomized rats. DHA presented the most evident antioxidant effect, decreasing protein and lipid damage.
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Affiliation(s)
- Ártur Krumberg Schüller
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Diego Antonio Mena Canata
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernanda Schäfer Hackenhaar
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Vanessa Krüger Engers
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Fernanda Maciel Heemann
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Jordana Salete Putti
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Tiago Boeira Salomon
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Mara Silveira Benfato
- Department of Biophysics, Postgraduate Programme in Cellular and Molecular Biology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
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227
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Qi M, Zhang L, Ma Y, Shuai Y, Li L, Luo K, Liu W, Jin Y. Autophagy Maintains the Function of Bone Marrow Mesenchymal Stem Cells to Prevent Estrogen Deficiency-Induced Osteoporosis. Theranostics 2017; 7:4498-4516. [PMID: 29158841 PMCID: PMC5695145 DOI: 10.7150/thno.17949] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 09/11/2017] [Indexed: 12/13/2022] Open
Abstract
Rationale: The impaired function of endogenous bone marrow mesenchymal stem cells (BMMSCs) is a determinant in the development of osteoporosis (OP). Recent researches have proved that autophagy plays an important role in maintenance of skeletal phenotype. However, whether autophagy affects the development of OP through regulating the function of BMMSCs remains elusive. Methods: Ovariectomy (OVX)-induced OP model and sham model were established in 8-week-old C57 mice. The differentiation and immunoregulation properties of BMMSCs from two models were examined by osteogenic/adipogenic induction in vitro and treatment of a dextran sulfate sodium (DSS)-induced mice colitis model in vivo. We evaluated autophagy activity in sham and OVX BMMSCs by quantitative real time-polymerase chain reaction (qRT-PCR), western blotting, laser confocal microscopy and transmission electron microscopy (TEM). Finally, to testify the effects of rapamycin, short hairpin RNA (shRNA) -BECN1 (shBECN1) and shRNA-ATG5 (shATG5), we performed Alizarin Red staining and Oil Red O staining to detect lineage differentiations of BMMSCs, and carried out micro-CT, calcein staining and Oil Red O staining to assess the skeletal phenotype. Results: BMMSCs from OVX-induced OP model mice exhibited decreased osteogenic differentiation, increased adipogenic differentiation and impaired immunoregulatory capacity. Furthermore, autophagy decreased both in bone marrow and BMMSCs of osteoporotic mice. Importantly, regulation of autophagy directly affects the functions of BMMSCs, including differentiation and immunoregulatory capacities. Moreover, treatment with rapamycin rescued the function of endogenous BMMSCs and attenuated the osteoporotic phenotype in OVX mice. Conclusion: Our findings suggest that autophagy regulates the regenerative function of BMMSCs and controls the development of OP. The restoration of autophagy by rapamycin may provide an effective therapeutic method for osteoporosis.
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Affiliation(s)
- Meng Qi
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Liqiang Zhang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yang Ma
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yi Shuai
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Liya Li
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Kefu Luo
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wenjia Liu
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
| | - Yan Jin
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, Fourth Military Medical University, Xi'an, China
- Xi'an Institute of Tissue Engineering and Regenerative Medicine, Xi'an, China
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228
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Leeners B, Geary N, Tobler PN, Asarian L. Ovarian hormones and obesity. Hum Reprod Update 2017; 23:300-321. [PMID: 28333235 DOI: 10.1093/humupd/dmw045] [Citation(s) in RCA: 194] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 11/23/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Obesity is caused by an imbalance between energy intake, i.e. eating and energy expenditure (EE). Severe obesity is more prevalent in women than men worldwide, and obesity pathophysiology and the resultant obesity-related disease risks differ in women and men. The underlying mechanisms are largely unknown. Pre-clinical and clinical research indicate that ovarian hormones may play a major role. OBJECTIVE AND RATIONALE We systematically reviewed the clinical and pre-clinical literature on the effects of ovarian hormones on the physiology of adipose tissue (AT) and the regulation of AT mass by energy intake and EE. SEARCH METHODS Articles in English indexed in PubMed through January 2016 were searched using keywords related to: (i) reproductive hormones, (ii) weight regulation and (iii) central nervous system. We sought to identify emerging research foci with clinical translational potential rather than to provide a comprehensive review. OUTCOMES We find that estrogens play a leading role in the causes and consequences of female obesity. With respect to adiposity, estrogens synergize with AT genes to increase gluteofemoral subcutaneous AT mass and decrease central AT mass in reproductive-age women, which leads to protective cardiometabolic effects. Loss of estrogens after menopause, independent of aging, increases total AT mass and decreases lean body mass, so that there is little net effect on body weight. Menopause also partially reverses women's protective AT distribution. These effects can be counteracted by estrogen treatment. With respect to eating, increasing estrogen levels progressively decrease eating during the follicular and peri-ovulatory phases of the menstrual cycle. Progestin levels are associated with eating during the luteal phase, but there does not appear to be a causal relationship. Progestins may increase binge eating and eating stimulated by negative emotional states during the luteal phase. Pre-clinical research indicates that one mechanism for the pre-ovulatory decrease in eating is a central action of estrogens to increase the satiating potency of the gastrointestinal hormone cholecystokinin. Another mechanism involves a decrease in the preference for sweet foods during the follicular phase. Genetic defects in brain α-melanocycte-stimulating hormone-melanocortin receptor (melanocortin 4 receptor, MC4R) signaling lead to a syndrome of overeating and obesity that is particularly pronounced in women and in female animals. The syndrome appears around puberty in mice with genetic deletions of MC4R, suggesting a role of ovarian hormones. Emerging functional brain-imaging data indicates that fluctuations in ovarian hormones affect eating by influencing striatal dopaminergic processing of flavor hedonics and lateral prefrontal cortex processing of cognitive inhibitory controls of eating. There is a dearth of research on the neuroendocrine control of eating after menopause. There is also comparatively little research on the effects of ovarian hormones on EE, although changes in ovarian hormone levels during the menstrual cycle do affect resting EE. WIDER IMPLICATIONS The markedly greater obesity burden in women makes understanding the diverse effects of ovarian hormones on eating, EE and body adiposity urgent research challenges. A variety of research modalities can be used to investigate these effects in women, and most of the mechanisms reviewed are accessible in animal models. Therefore, human and translational research on the roles of ovarian hormones in women's obesity and its causes should be intensified to gain further mechanistic insights that may ultimately be translated into novel anti-obesity therapies and thereby improve women's health.
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Affiliation(s)
- Brigitte Leeners
- Division of Reproductive Endocrinology, University Hospital Zurich, Frauenklinikstr. 10, CH 8091 Zurich, Switzerland.,Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland
| | - Nori Geary
- Department of Psychiatry, Weill Medical College of Cornell University, New York, NY 10065, USA
| | - Philippe N Tobler
- Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland.,Laboratory for Social and Neural Systems Research, Department of Economics, University of Zurich, 8006 Zurich, Switzerland
| | - Lori Asarian
- Center for Integrative Human Physiology (ZIHP), University of Zurich, 8057 Zurich, Switzerland.,Institute of Veterinary Physiology, University of Zurich, 8057 Zurich, Switzerland
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229
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Sapir-Koren R, Livshits G. Postmenopausal osteoporosis in rheumatoid arthritis: The estrogen deficiency-immune mechanisms link. Bone 2017; 103:102-115. [PMID: 28666971 DOI: 10.1016/j.bone.2017.06.020] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 06/13/2017] [Accepted: 06/26/2017] [Indexed: 12/20/2022]
Abstract
Rheumatoid arthritis (RA) is characterized, among other factors, by systemic bone loss, reaching ~50% prevalence of osteoporosis in postmenopausal women. This is roughly a doubled prevalence in comparison with age-matched non-RA women. Postmenopausal RA women are more likely to be sero-positive for the anti-citrullinated peptide antibody (ACPA). Our extensive review of recent scientific literature enabled us to propose several mechanisms as responsible for the accelerated bone loss in ACPA(+) RA postmenopausal women. Menopause-associated estrogen deficiency plays a major role in these pathological mechanisms, as follows.
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Affiliation(s)
- Rony Sapir-Koren
- Human Population Biology Research Group, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
| | - Gregory Livshits
- Human Population Biology Research Group, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel; Lilian and Marcel Pollak Chair of Biological Anthropology, Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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230
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Cao JJ, Gregoire BR, Shen CL. A High-Fat Diet Decreases Bone Mass in Growing Mice with Systemic Chronic Inflammation Induced by Low-Dose, Slow-Release Lipopolysaccharide Pellets. J Nutr 2017; 147:1909-1916. [PMID: 28814530 DOI: 10.3945/jn.117.248302] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 03/03/2017] [Accepted: 07/18/2017] [Indexed: 11/14/2022] Open
Abstract
Background: Chronic inflammation is associated with increased bone resorption and is linked to osteopenia, or low bone mass. Obesity is also associated with low-grade chronic upregulation of inflammatory cytokines.Objective: This study investigated the effect of high-fat (HF) diet-induced obesity on bone structure changes in growing mice with existing systemic chronic inflammation induced by low-dose, slow-release lipopolysaccharide (LPS).Methods: Forty-eight 6-wk-old female C57BL/6 mice were randomly assigned to 4 treatment groups (n = 12/group) in a 2 × 2 factorial design-control (placebo) or LPS treatment (1.5 μg/d)-and consumed either a normal-fat (NF, 10% of energy as fat) or an HF (45% of energy as fat) diet ad libitum for 13 wk. Bone structure, serum biomarkers of bone turnover, and osteoclast differentiation were measured.Results: No alterations were observed in final body weights, fat mass, or lean mass in response to LPS treatment. LPS treatment increased serum concentration of tartrate-resistant acid phosphatase (TRAP, a bone resorption marker) and bone marrow osteoclast differentiation and decreased femoral and lumbar vertebral bone volume (BV):total volume (TV) by 25% and 24%, respectively, compared with the placebo. Mice fed the HF diet had greater body weight at the end of the study (P < 0.01) due to increased fat mass (P < 0.01) than did mice fed the NF diet. The HF diet increased serum TRAP concentration, bone marrow osteoclast differentiation, and expression of tumor necrosis factor α, interleukin 1β and interleukin 6 in adipose tissue. Compared with the NF diet, the HF diet decreased BV:TV by 10% and 8% at femur and lumbar vertebrae, respectively, and the HF diet was detrimental to femoral and lumbar vertebral bone structure with decreased trabecular number and increased trabecular separation and structure model index.Conclusion: Results suggest that HF diets and systemic chronic inflammation have independent negative effects on bone structure in mice.
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Affiliation(s)
- Jay J Cao
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND; and
| | - Brian R Gregoire
- USDA, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND; and
| | - Chwan-Li Shen
- Department of Pathology, Texas Tech University Health Sciences Center, Lubbock, TX
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231
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Kim EK, Kim H, Kwon O, Chang N. Associations between fruits, vegetables, vitamin A, β-carotene and flavonol dietary intake, and age-related macular degeneration in elderly women in Korea: the Fifth Korea National Health and Nutrition Examination Survey. Eur J Clin Nutr 2017; 72:161-167. [DOI: 10.1038/ejcn.2017.152] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 12/25/2022]
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232
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Kwon HJ, Lee SM, Pak KY, Park SW, Lee JE, Byon IS. Gender Differences in the Relationship between Sex Hormone Deficiency and Soft Drusen. Curr Eye Res 2017; 42:1527-1536. [DOI: 10.1080/02713683.2017.1337155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Han Jo Kwon
- Department of Ophthalmology, Medical Research Institute, Pusan National University Hospital, Busan, South Korea
| | - Seung Min Lee
- Department of Ophthalmology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea
| | - Kang Yeun Pak
- Department of Ophthalmology, Haeundae Paik Hospital, Inje University, Busan, South Korea
| | - Sung Who Park
- Department of Ophthalmology, Medical Research Institute, Pusan National University Hospital, Busan, South Korea
- College of Medicine, Pusan National University, Busan, South Korea
| | - Ji Eun Lee
- Department of Ophthalmology, Medical Research Institute, Pusan National University Hospital, Busan, South Korea
- College of Medicine, Pusan National University, Busan, South Korea
| | - Ik Soo Byon
- Department of Ophthalmology, Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea
- College of Medicine, Pusan National University, Busan, South Korea
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233
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Chen X, Zhi X, Cao L, Weng W, Pan P, Hu H, Liu C, Zhao Q, Zhou Q, Cui J, Su J. Matrine derivate MASM uncovers a novel function for ribosomal protein S5 in osteoclastogenesis and postmenopausal osteoporosis. Cell Death Dis 2017; 8:e3037. [PMID: 28880271 PMCID: PMC5636967 DOI: 10.1038/cddis.2017.394] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Revised: 07/09/2017] [Accepted: 07/11/2017] [Indexed: 02/08/2023]
Abstract
Postmenopausal osteoporosis (POMP) is a public health problem characterized by decreased bone density and increased fracture risk. Over-activated osteoclastogenesis plays a vital role in POMP. Here we developed a novel bioactive compound MASM (M19) based on sophocarpine. Although it showed no significant effects on osteogenesis and adipogenesis for bone marrow-derived mesenchymal stem cells (BMSCs) in vitro, it could significantly inhibit RANKL/M-CSF induced osteoclastogenesis through suppressing NF-κB, MAPKs and PI3K/Akt pathways in vitro and ameliorate bone loss in ovariectomized mice in vivo. Ribosomal protein s5 (RPS5) has been identified as a target of M19 and regulates PI3K/Akt, NF-κB and MAPKs pathways in osteoclastogenesis. Overexpressions of RPS5 synergistically inhibited osteoclastogenesis with M19 while silencing RPS5 compromised M19 inhibitory effects on osteoclastogenesis in vitro. Among the three pathways, Akt plays a major role in M19 effects. The Akt activator SC79 partially reversed the inhibitory effects on osteoclastogenesis by M19 and RPS5-knocking-down. It indicates that RPS5 serves as a potential candidate target for inhibiting osteoclastogenesis and osteoporosis therapy and M19 is a promising agent for POMP treatment.
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Affiliation(s)
- Xiao Chen
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Xin Zhi
- Graduate Management Unit, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China
| | - Liehu Cao
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Weizong Weng
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Panpan Pan
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Honggang Hu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Chao Liu
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qingjie Zhao
- School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qirong Zhou
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Jin Cui
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
| | - Jiacan Su
- Department of Orthopedics Trauma, Shanghai Changhai Hospital, Second Military Medical University, Yangpu District, Shanghai 200433, China.,China-South Korea Bioengineering Center, Jiading District, Shanghai 201802, China
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234
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Santos RS, de Fatima LA, Frank AP, Carneiro EM, Clegg DJ. The effects of 17 alpha-estradiol to inhibit inflammation in vitro. Biol Sex Differ 2017; 8:30. [PMID: 28877759 PMCID: PMC5586055 DOI: 10.1186/s13293-017-0151-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/29/2017] [Indexed: 01/01/2023] Open
Abstract
Background 17 Alpha-estradiol (17 α-E2) is a natural, non-feminizing stereoisomer of 17 beta-estradiol (17 β-E2). Whereas much is known about the physiological effects of 17 β-E2, much less is known about 17 α-E2. For example, 17 β-E2 exerts anti-inflammatory effects in neurons and adipocytes through binding and activation of estrogen receptor alpha (ERα); however, if 17 α-E2 has similar effects on inflammation is currently unknown. Methods To begin to address this, we analyzed the ability of 17 α-E2 and 17 β-E2 to suppress lipopolysaccharide (LPS)-induced inflammation in vitro using embryonic fibroblast cells (MEF) from wild type and total body ERα (ERKO) male and female mice. Additionally, we further probed if there were sex differences with respect to the effects of E2s using primary pre-adipocyte cells from C57BL/6J male and female mice. Also, we probed mechanistically the effects of E2s in fully differentiated 3T3-L1 cells. Results Both E2s decreased LPS-induced markers of inflammation Tnf-α and Il-6, and increased the anti-inflammatory markers Il-4 and IL-6 receptor (Il-6ra) in MEF cells. To begin to understand the mechanisms by which both E2’s mediate their anti-inflammatory effects, we probed the role of ERα using two methods. First, we used MEF cells from ERKO mice and found reductions in ERα diminished the ability of 17 α-E2 to suppress Tnf-α in female but not in male cells, demonstrating a sexual dimorphism in regard to the role of ERα to mediate 17 α-E2’s effects. Second, we selectively reduced the expression of ERα in 3T3-L1 cells using siRNA and found reductions in ERα diminished the ability of both E2s to suppress Tnf-α and Il-6 expression. Lastly, to determine the mechanisms by which E2s reduce inflammation, we explored the role of NFκB-p65 and found both E2s decreased NFκB-p65 expression. Conclusions In conclusion, we demonstrate for the first time that 17 α-E2, as well as 17 β-E2, suppresses inflammation through their effects on ERα and NFκB-p65. Electronic supplementary material The online version of this article (10.1186/s13293-017-0151-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Roberta S Santos
- Biomedical Sciences Dept, Diabetes and Obesity Research Division, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Luciana A de Fatima
- Biomedical Sciences Dept, Diabetes and Obesity Research Division, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Aaron P Frank
- Biomedical Sciences Dept, Diabetes and Obesity Research Division, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Everardo M Carneiro
- Obesity and Comorbidities Research Center (OCRC), Institute of Biology, State University of Campinas-UNICAMP, Campinas, SP, Brazil
| | - Deborah J Clegg
- Biomedical Sciences Dept, Diabetes and Obesity Research Division, Cedars-Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA.
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235
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Verheggen RJHM, Poelkens F, Roerink SHPP, Ramakers REFS, Catoire M, Hermus ARMM, Thijssen DHJ, Hopman MTE. Exercise Improves Insulin Sensitivity in the Absence of Changes in Cytokines. Med Sci Sports Exerc 2017; 48:2378-2386. [PMID: 27414688 DOI: 10.1249/mss.0000000000001035] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE The benefits of aerobic exercise training on insulin sensitivity in subjects with metabolic syndrome (MetS) are, at least in part, associated with changes in cytokines. Recent studies identified novel cytokines (e.g., fractalkine, omentin, and osteopontin) that are strongly involved in glucose homeostasis and therefore potentially contribute in the exercise-induced changes in insulin sensitivity. Therefore, we aim to examine changes in skeletal muscle RNA expression and plasma levels of novel cytokines after exercise training and correlate these changes to the exercise-induced changes in insulin sensitivity. METHODS Women with metabolic syndrome (MetS, n = 11) and healthy women (n = 10) participated in a 6-month aerobic exercise training intervention (three times a week, 45 min per session at 65%-85% of individual heart rate reserve). Before and after training, we examined insulin sensitivity (M value during hyperinsulinemic euglycemic clamp) and circulating blood levels of cytokines (venous blood sample; leptin, adiponectin, omentin, fraktalkin, and osteopontin). The skeletal muscle RNA expression of these cytokines (muscle biopsy) was examined in two subgroups (MetS, n = 6; healthy women, n = 6). RESULTS At baseline, plasma levels of omentin (85.8 ± 26.2 ng·mL) and adiponectin (5.0 ± 1.7 μg·mL) levels were significantly higher in controls compared with MetS (51.1 ± 27.1; 3.6 ± 1.1 respectively), and leptin levels were lower in controls (18.7 ± 11.5 vs 53.0 ± 23.5 ng·mL). M value was significantly higher in controls (8.1 ± 1.9 mg·kg·min) than in MetS (4.0 ± 1.7). Exercise training significantly improved M values in both groups (P < 0.01). Exercise training did not alter plasma and skeletal muscle RNA expression levels of cytokines, but no correlation was observed between changes in cytokine level/RNA expression and M values (P > 0.05). CONCLUSION Although exercise training successfully improves insulin sensitivity in MetS and healthy women, we found no change in plasma and mRNA expression levels of novel cytokines.
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Affiliation(s)
- Rebecca J H M Verheggen
- 1Department of Physiology, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, THE NETHERLANDS; 2Division of Endocrinology, Department of Internal Medicine, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, THE NETHERLANDS; and 3Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UNITED KINGDOM
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Circulating interleukin-8 and tumor necrosis factor-α are associated with hot flashes in healthy postmenopausal women. PLoS One 2017; 12:e0184011. [PMID: 28846735 PMCID: PMC5573141 DOI: 10.1371/journal.pone.0184011] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/16/2017] [Indexed: 01/05/2023] Open
Abstract
Introduction Hot flashes have been postulated to be linked to systemic inflammation. This study aimed to investigate the relationship between hot flashes, pro-inflammatory factors, and leukocytes in healthy, non-obese postmenopausal women. Participants and design In this cross-sectional study, a total of 202 women aged 45–60 years were stratified into one of four groups according to their hot-flash status: never experienced hot flashes (Group N), mild hot flashes (Group m), moderate hot flashes (Group M), and severe hot flashes (Group S). Variables measured in this study included clinical parameters, hot flash experience, leukocytes, and fasting plasma levels of nine circulating cytokines/chemokines measured by using multiplex assays. Multiple linear regression analysis was used to evaluate the associations of hot flashes with these pro-inflammatory factors. Settings The study was performed in a hospital medical center. Results The mean values of leukocyte number were not different between these four groups. The hot flash status had a positive tendency toward increased levels of circulating IL-6 (P-trend = 0.049), IL-8 (P-trend < 0.001), TNF-α (P-trend = 0.008), and MIP1β (P-trend = 0.04). Multivariate linear regression analysis revealed that hot-flash severity was significantly associated with IL-8 (P-trend < 0.001) and TNFα (P-trend = 0.007) among these nine cytokines/chemokines after adjustment for age, menopausal duration, BMI and FSH. Multivariate analysis further revealed that severe hot flashes were strongly associated with a higher IL-8 (% difference, 37.19%; 95% confidence interval, 14.98,63.69; P < 0.001) and TNFα (51.27%; 6.64,114.57; P < 0.05). Conclusion The present study provides evidence that hot flashes are associated with circulating IL-8 and TNF-α in healthy postmenopausal women. It suggests that hot flashes might be related to low-grade systemic inflammation.
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Involvement of HSP70 and HO-1 in the protective effects of raloxifene on multiple organ dysfunction syndrome by endotoxemia in ovariectomized rats. Menopause 2017; 24:959-969. [DOI: 10.1097/gme.0000000000000864] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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238
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Pedersen AL, Brownrout JL, Saldanha CJ. Central Administration of Indomethacin Mitigates the Injury-Induced Upregulation of Aromatase Expression and Estradiol Content in the Zebra Finch Brain. Endocrinology 2017; 158:2585-2592. [PMID: 28575175 PMCID: PMC5551551 DOI: 10.1210/en.2017-00346] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 05/26/2017] [Indexed: 12/18/2022]
Abstract
Injury to the vertebrate brain causes neuroinflammation, characterized in part by increases in prostaglandins. In rodents and songbirds, brain injury also induces the transcription and translation of aromatase in reactive astrocytes around the site of damage. Interestingly, this induction is more rapid in female zebra finches relative to males. Induced aromatization is neuroprotective, as inhibition of aromatase and estrogen replacement, increases and decreases the extent of damage, respectively. Although the consequences of induced astrocytic aromatization are intensely studied, little is known about what factors induce aromatase. Inflammation is sufficient to induce astrocytic aromatase suggesting that the link between inflammation and aromatase expression may be causal. To test this hypothesis, adult male and female zebra finches received bilateral mechanical injuries through which either the cyclooxygenase (COX)-1/2 inhibitor indomethacin or vehicle was administered into contralateral hemispheres. Subjects were killed either 6 or 24 hours after injury. In both sexes, an enzyme immunoassay for prostaglandin E2 (PGE2) revealed that indomethacin decreased PGE2 relative to the contralateral hemisphere at both time points, suggesting that the dose and mode of administration used were successful in affecting neuroinflammation locally. Indomethacin reduced aromatase expression and 17β-estradiol (E2) content at 6 hours but not 24 hours following injury in females. However, in males, the inhibitory effect of indomethacin on aromatase and E2 was apparent at 24 but not 6 hours after treatment. These data suggest that COX activity, perhaps via consequent prostaglandin secretion, may induce aromatase expression and central E2, an effect that is detectable in temporally distinct patterns between sexes.
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Affiliation(s)
- Alyssa L. Pedersen
- Department of Biology, Behavior, Cognition, and Neuroscience Program, and the Center for Behavioral Neuroscience, American University, Washington, DC 20016
| | - Jenna L. Brownrout
- Department of Biology, Behavior, Cognition, and Neuroscience Program, and the Center for Behavioral Neuroscience, American University, Washington, DC 20016
| | - Colin J. Saldanha
- Department of Biology, Behavior, Cognition, and Neuroscience Program, and the Center for Behavioral Neuroscience, American University, Washington, DC 20016
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Chen X, Zhi X, Pan P, Cui J, Cao L, Weng W, Zhou Q, Wang L, Zhai X, Zhao Q, Hu H, Huang B, Su J. Matrine prevents bone loss in ovariectomized mice by inhibiting RANKL-induced osteoclastogenesis. FASEB J 2017; 31:4855-4865. [PMID: 28739641 PMCID: PMC5636701 DOI: 10.1096/fj.201700316r] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 07/05/2017] [Indexed: 01/30/2023]
Abstract
Osteoporosis is a metabolic bone disease characterized by decreased bone density and strength due to excessive loss of bone protein and mineral content. The imbalance between osteogenesis by osteoblasts and osteoclastogenesis by osteoclasts contributes to the pathogenesis of postmenopausal osteoporosis. Estrogen withdrawal leads to increased levels of proinflammatory cytokines. Overactivated osteoclasts by inflammation play a vital role in the imbalance. Matrine is an alkaloid found in plants from the Sophora genus with various pharmacological effects, including anti-inflammatory activity. Here we demonstrate that matrine significantly prevented ovariectomy-induced bone loss and inhibited osteoclastogenesis in vivo with decreased serum levels of TRAcp5b, TNF-α, and IL-6. In vitro matrine significantly inhibited osteoclast differentiation induced by receptor activator for NF-κB ligand (RANKL) and M-CSF in bone marrow monocytes and RAW264.7 cells as demonstrated by tartrate-resistant acid phosphatase (TRAP) staining and actin-ring formation as well as bone resorption through pit formation assays. For molecular mechanisms, matrine abrogated RANKL-induced activation of NF-κB, AKT, and MAPK pathways and suppressed osteoclastogenesis-related marker expression, including matrix metalloproteinase 9, NFATc1, TRAP, C-Src, and cathepsin K. Our study demonstrates that matrine inhibits osteoclastogenesis through modulation of multiple pathways and that matrine is a promising agent in the treatment of osteoclast-related diseases such as osteoporosis.-Chen, X., Zhi, X., Pan, P., Cui, J., Cao, L., Weng, W., Zhou, Q., Wang, L., Zhai, X. Zhao, Q., Hu, H., Huang, B., Su, J. Matrine prevents bone loss in ovariectomized mice by inhibiting RANKL-induced osteoclastogenesis.
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Affiliation(s)
- Xiao Chen
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Xin Zhi
- Graduate Management Unit, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China; and
| | - Panpan Pan
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Jin Cui
- Graduate Management Unit, Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China; and
| | - Liehu Cao
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Weizong Weng
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Qirong Zhou
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Lin Wang
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China.,China-South Korea Bioengineering Center, Shanghai, China
| | - Xiao Zhai
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Qingiie Zhao
- China-South Korea Bioengineering Center, Shanghai, China.,School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Honggang Hu
- China-South Korea Bioengineering Center, Shanghai, China.,School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Biaotong Huang
- China-South Korea Bioengineering Center, Shanghai, China
| | - Jiacan Su
- Department of Orthopedics Trauma and Shanghai Changhai Hospital, Second Military Medical University, Shanghai, China; .,China-South Korea Bioengineering Center, Shanghai, China
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Haffner-Luntzer M, Fischer V, Prystaz K, Liedert A, Ignatius A. The inflammatory phase of fracture healing is influenced by oestrogen status in mice. Eur J Med Res 2017; 22:23. [PMID: 28683813 PMCID: PMC5501454 DOI: 10.1186/s40001-017-0264-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 06/22/2017] [Indexed: 12/20/2022] Open
Abstract
Background Fracture healing is known to be delayed in postmenopausal, osteoporotic females under oestrogen-deficient conditions. Confirming this, experimental studies demonstrated impaired callus formation in ovariectomised animals. Oestrogen-deficiency is known to affect the immune system and the inflammatory response during wound healing. Because a balanced immune response is required for proper bone healing, we were interested to ascertain whether the early immune response after facture is affected by oestrogen depletion. Methods To address the above question, female mice received either a bilateral ovariectomy (OVX) or were sham-operated, and femur osteotomy was performed 8 weeks after OVX/sham operation. The effects of OVX on the presence of immune cells and pro-inflammatory cytokines were evaluated by flow cytometry and immunohistochemistry of the fracture calli on days 1 and 3 after fracture. Results One day after fracture, immune cell numbers and populations in the fracture haematoma did not differ between OVX- and sham-mice. However, on day 3 after fracture, OVX-mice displayed significantly greater numbers of neutrophils. Local expression of the oestrogen-responsive and pro-inflammatory cytokine midkine (Mdk) and interleukin-6 (IL-6) expression in the fracture callus were increased in OVX-mice on day 3 after fracture compared with sham-mice, indicating that both factors might be involved in the increased presence of neutrophils. Confirming this, Mdk-antibody treatment decreased the number of neutrophils in the fracture callus and reduced local IL-6 expression in OVX-mice. Conclusions These data indicate that oestrogen-deficiency influences the early inflammatory phase after fracture. This may contribute to delayed fracture healing after oestrogen depletion.
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Affiliation(s)
- Melanie Haffner-Luntzer
- Institute of Orthopaedic Research and Biomechanics, University Medical Centre Ulm, Helmholtzstraße 9, 89081, Ulm, Germany.
| | - Verena Fischer
- Institute of Orthopaedic Research and Biomechanics, University Medical Centre Ulm, Helmholtzstraße 9, 89081, Ulm, Germany
| | - Katja Prystaz
- Institute of Orthopaedic Research and Biomechanics, University Medical Centre Ulm, Helmholtzstraße 9, 89081, Ulm, Germany
| | - Astrid Liedert
- Institute of Orthopaedic Research and Biomechanics, University Medical Centre Ulm, Helmholtzstraße 9, 89081, Ulm, Germany
| | - Anita Ignatius
- Institute of Orthopaedic Research and Biomechanics, University Medical Centre Ulm, Helmholtzstraße 9, 89081, Ulm, Germany
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Bukowska A, Spiller L, Wolke C, Lendeckel U, Weinert S, Hoffmann J, Bornfleth P, Kutschka I, Gardemann A, Isermann B, Goette A. Protective regulation of the ACE2/ACE gene expression by estrogen in human atrial tissue from elderly men. Exp Biol Med (Maywood) 2017; 242:1412-1423. [PMID: 28661206 DOI: 10.1177/1535370217718808] [Citation(s) in RCA: 136] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Data from animal experiments and clinical investigations suggest that components of the renin-angiotensin system are markedly affected by sex hormones. However, whether estrogen affects human atrial myocardium has not been investigated yet. In this study, we determined the effects of estrogen on key components of atrial renin-angiotensin system: angiotensin-converting enzyme, responsible for generation of angiotensin II and angiotensin-converting enzyme 2, counteracting majority of AngII effects, and different renin-angiotensin system receptors, AT1R, AT2R, and MAS. First, the expression levels of estrogen receptors mRNA were determined in right atrial appendages obtained from patients undergoing heart surgery. The amounts of estrogen receptor α and estrogen receptor β mRNA were similar between women ( n = 14) and men ( n = 10). Atrial tissue slices (350 µm) were prepared from male donors which were exposed to estrogen (1-100 nM; n = 21) or stimulated at 4 Hz for 24 h in the presence or absence of 100 nM estrogen ( n = 16), respectively. The administration of estrogen did not change mRNA levels of estrogen receptors, but activated MAP kinases, Erk1/2. Furthermore, estrogen increased the amounts of angiotensin-converting enzyme 2-mRNA (1.89 ± 0.23; P < 0.05) but reduced that of angiotensin-converting enzyme-mRNA (0.78 ± 0.07, P < 0.05). In addition, the transcript levels of AT2R and MAS were upregulated by estrogen. Pacing of tissue slices significantly increased the angiotensin-converting enzyme/angiotensin-converting enzyme 2 ratio at both the mRNA and protein level. During pacing, administration of estrogen substantially lowered the angiotensin-converting enzyme/angiotensin-converting enzyme 2 ratio at the transcript (0.92 ± 0.21 vs. 2.12 ± 0.27 at 4 Hz) and protein level (0.94 ± 0.20 vs. 2.14 ± 0.3 at 4 Hz). Moreover, estrogen elicited anti-inflammatory and anti-oxidative effects on renin-angiotensin system-associated downstream effectors such as pro-oxidative LOX-1 and pro-inflammatory ICAM-1. An antagonist of estrogen receptor α reversed these anti-inflammatory and anti-oxidative effects of estrogen significantly. Overall, our results demonstrated that estrogen modifies the local renin-angiotensin system homeostasis and achieves protective effects in atrial myocardium from elderly men. Impact statement The present study demonstrates that estrogen affects the human atrial myocardium and mediates protective actions through estrogen receptors-(ER) dependent signaling. Estrogen substantially modulates the local RAS via downregulation of ACE and simultaneous upregulation of ACE2, AT2R and MAS expression levels. This is indicative of a shift of the classical RAS/ACE axis to the alternative, protective RAS/ACE2 axis. In support of this view, estrogen attenuated the expression of RAS-associated downstream effectors, LOX-1, and ICAM-1. A specific antagonist of ERα reversed the anti-inflammatory and anti-oxidative effects of estrogen in paced and non-paced atrial tissue slices. In summary, our data demonstrate the existence of protective effects of estrogen in atrial tissue from elderly men which are at least in part, mediated by the regulation of local RAS homeostasis.
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Affiliation(s)
- A Bukowska
- 1 Institute of Clinical Chemistry and Pathobiochemistry, Department of Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - L Spiller
- 2 Medical Department I, Division of Rheumatology, Charitá University Medicine Berlin, Berlin 12203, Germany
| | - C Wolke
- 3 Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald 17479, Germany
| | - U Lendeckel
- 3 Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald 17479, Germany
| | - S Weinert
- 4 Department of Cardiology, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - J Hoffmann
- 5 Department of Clinical Chemistry, Institute of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - P Bornfleth
- 1 Institute of Clinical Chemistry and Pathobiochemistry, Department of Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - I Kutschka
- 6 Department of Cardiothoracic Surgery, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - A Gardemann
- 1 Institute of Clinical Chemistry and Pathobiochemistry, Department of Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - B Isermann
- 5 Department of Clinical Chemistry, Institute of Clinical Chemistry and Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany
| | - A Goette
- 1 Institute of Clinical Chemistry and Pathobiochemistry, Department of Pathobiochemistry, Otto-von-Guericke University Magdeburg, Magdeburg 39120, Germany.,7 St. Vincenz-Hospital, Paderborn 33098, Germany
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Fiedler SE, George JD, Love HN, Kim E, Spain R, Bourdette D, Salinthone S. Analysis of IL-6, IL-1β and TNF-α production in monocytes isolated from multiple sclerosis patients treated with disease modifying drugs. ACTA ACUST UNITED AC 2017; 3. [PMID: 28966794 DOI: 10.15761/jsin.1000166] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
OBJECTIVE AND DESIGN The etiology of multiple sclerosis (MS) is unknown, but blood derived monocytes/macrophages are believed to be involved in the pathogenesis through phagocytosis of myelin and production of inflammatory mediators. The objective of this study is to examine inflammatory cytokines that are present at elevated levels in active MS lesions to determine whether there are differences between classically stimulated monocytes isolated from healthy control (HC) and relapsing-remitting MS (RRMS) subjects taking disease modifying drugs (DMDs), including dimethyl fumarate (DMF). SUBJECTS Thirty-nine veterans of the US Armed Forces were enrolled, 21 health controls (HC), and 18 with relapsing-remitting MS (RRMS), all taking DMDs. METHODS Use ELISAs to measure production of IL-6, IL-1β and TNF-α by LPS-stimulated peripheral monocytes. RESULTS Activation of monocytes from MS subjects produced significantly more IL-6 than healthy controls (49531 ± 20795 vs 10526 ± 4845), and IL-6 production trended higher in MS subjects taking DMF than those taking other DMDs (72186.9 ± 35156.2 vs 32585.8 ± 17135.4). There were no significant differences in IL-1β or TNF-α secretion. CONCLUSIONS Our data suggest that not all DMDs may provide disease modification by suppressing monocyte/macrophage production of pro-inflammatory mediators.
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Affiliation(s)
- Sarah E Fiedler
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA
| | - Joshua D George
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA
| | - Haley N Love
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA
| | - Edward Kim
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA.,Department of Neurology, Oregon Health & Sciences University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, USA
| | - Rebecca Spain
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA.,Department of Neurology, Oregon Health & Sciences University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, USA
| | - Dennis Bourdette
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA.,Department of Neurology, Oregon Health & Sciences University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, USA
| | - Sonemany Salinthone
- VA Portland Health Care System, Research and Development Service, 3710 SW US Veterans' Hospital Rd. Portland, OR 97239, USA.,Department of Neurology, Oregon Health & Sciences University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, USA
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A higher Dietary Inflammatory Index score is associated with a higher risk of breast cancer among Chinese women: a case-control study. Br J Nutr 2017; 117:1358-1367. [PMID: 28580895 DOI: 10.1017/s0007114517001192] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Previous studies have investigated the association between dietary inflammatory potential and the development of cancer. For breast cancer the results have been equivocal. The present study aimed to investigate whether higher Dietary Inflammatory IndexTM (DII) scores were associated with increased risk of breast cancer among Chinese women. A total of 867 cases and 824 controls were recruited into the present case-control study from September 2011 to February 2016. DII scores were computed based on baseline dietary intake assessed by a validated 81-item FFQ. The OR and 95 % CI were assessed by multivariable logistic regression after adjusting for various potential confounders. DII scores in this study ranged from -5·87 (most anti-inflammatory score) to +5·71 (most proinflammatory score). A higher DII score was associated with a higher breast cancer risk (adjusted ORquartile 4 v. 1 2·28; 95 % CI 1·71, 3·03; adjusted ORcontinuous 1·40; 95 %CI 1·25, 1·39). In stratified analyses, positive associations also were observed except for underweight women or women with either oestrogen receptor+ or progesterone receptor+ status (but not both). Results from this study indicated that higher DII scores, corresponding to more proinflammatory diets, were positively associated with breast cancer risk among Chinese women.
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Daswani B, Gavali S, Desai M, Patil A, Khatkhatay MI. Serum levels of phosphorylated heat shock protein 27 (pHSP27) are associated with bone mineral density in pre- & postmenopausal women: A pilot study. Indian J Med Res 2017; 143:288-96. [PMID: 27241641 PMCID: PMC4892074 DOI: 10.4103/0971-5916.182618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND & OBJECTIVES Phosphorylated heat shock protein 27 (pHSP27) has been implicated in the pathogenesis of osteoporosis. oxidative stress and proinflammatory cytokines, which are known to be involved in aetiology of osteoporosis, can trigger HSP27 phosphorylation. Since pHSP27 is present in circulation, it was hypothesized that serum pHSP27 would be elevated in low bone mineral density (BMD) condition and might serve as an indicator of osteoporosis/osteopenia. Hence, the aim of this study was to examine serum levels of pHSP27 in relation with BMD in pre- and postmenopausal women. METHODS Premenopausal (30 to 40 yr) and postmenopausal (50 to 60 yr) women having either low BMD (osteopenia/osteoporosis) or high BMD were selected (n=80) from a prospective cohort (n=200). Serum levels of pHSP27; along with levels of oestradiol, malondialdehyde, total antioxidant capacity, interleukin (IL)-1, IL-6, tumour necrosis factor - alpha, (TNF-α), c-telopeptide fragments of collagen type I (CTX-1) and osteocalcin were estimated. RESULTS The serum levels of pHSP27 were significantly elevated in low BMD groups in premenopausal and postmenopausal categories (p<0.05). It also exhibited a significant odds ratio (OR) to differentiate between low and high BMD in both premenopausal (OR=1.734, p=0.013) and postmenopausal (OR=1.463, p=0.042) categories. Additionally, area under the curve to predict low BMD was non-significantly higher for pHSP27 than CTX-1 in premenopausal and postmenopausal categories. INTERPRETATION & CONCLUSIONS This study highlights a novel relation between serum pHSP27 and BMD in Indian women however, these findings need to be confirmed in larger studies.
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Affiliation(s)
- Bhavna Daswani
- Division of Molecular Immunodiagnostics, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
| | - Shubhangi Gavali
- Division of Molecular Immunodiagnostics, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
| | - Meena Desai
- Division of Molecular Immunodiagnostics, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
| | - Anushree Patil
- Division of Clinical Research, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
| | - M Ikram Khatkhatay
- Division of Molecular Immunodiagnostics, National Institute for Research in Reproductive Health (ICMR), Mumbai, India
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Li J, Wang Q, Yang R, Zhang J, Li X, Zhou X, Miao D. BMI-1 Mediates Estrogen-Deficiency-Induced Bone Loss by Inhibiting Reactive Oxygen Species Accumulation and T Cell Activation. J Bone Miner Res 2017; 32:962-973. [PMID: 27943387 DOI: 10.1002/jbmr.3059] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 12/03/2016] [Accepted: 12/08/2016] [Indexed: 11/07/2022]
Abstract
Previous studies have shown that estrogen regulates bone homeostasis through regulatory effects on oxidative stress. However, it is unclear how estrogen deficiency triggers reactive oxygen species (ROS) accumulation. Recent studies provide evidence that the B lymphoma Mo-MLV insertion region 1 (BMI-1) plays a critical role in protection against oxidative stress and that this gene is directly regulated by estrogen via estrogen receptor (ER) at the transcriptional level. In this study, ovariectomized mice were given drinking water with/without antioxidant N-acetyl-cysteine (NAC, 1 mg/mL) supplementation, and compared with each other and with sham mice. Results showed that ovariectomy resulted in bone loss with increased osteoclast surface, increased ROS levels, T cell activation, and increased TNF and RANKL levels in serum and in CD4 T cells; NAC supplementation largely prevented these alterations. BMI-1 expression levels were dramatically downregulated in CD4 T cells from ovariectomized mice. We supplemented drinking water to BMI-1-deficient mice with/without NAC and compared them with each other and with wild-type (WT) mice. We found that BMI-1 deficiency mimicked alterations observed in ovariectomy whereas NAC supplementation reversed all alterations induced by BMI-1 deficiency. Because T cells are critical in mediating ovariectomy-induced bone loss, we further assessed whether BMI-1 overexpression in lymphocytes can protect against estrogen deficiency-induced osteoclastogenesis and bone loss by inhibiting oxidative stress, T cell activation, and RANKL production. When WT and Eμ-BMI-1 transgenic mice with BMI-1 specifically overexpressed in lymphocytes were ovariectomized and compared with each other and with WT sham mice, we found that BMI-1 overexpression in lymphocytes clearly reversed all alterations induced by ovariectomy. Results from this study indicate that estrogen deficiency downregulates BMI-1 and subsequently increases ROS, T cell activation, and RANKL production in T cells, thus enhancing osteoclastogenesis and accelerating bone loss. This study clarifies a novel mechanism regulating estrogen deficiency-induced bone loss. © 2016 American Society for Bone and Mineral Research.
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Affiliation(s)
- Jinbo Li
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qian Wang
- Department of Human Anatomy, School of Medicine, Jiangsu University, Zhenjiang, China
| | - Renlei Yang
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiaqi Zhang
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Xing Li
- Department of Immuno-oncology, Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xichao Zhou
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dengshun Miao
- State Key Laboratory of Reproductive Medicine, The Research Center for Bone and Stem Cells, Department of Anatomy, Histology and Embryology, Nanjing Medical University, Nanjing, Jiangsu, China
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247
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Park SK, Harlow SD, Zheng H, Karvonen-Gutierrez C, Thurston RC, Ruppert K, Janssen I, Randolph JF. Association between changes in oestradiol and follicle-stimulating hormone levels during the menopausal transition and risk of diabetes. Diabet Med 2017; 34:531-538. [PMID: 27973745 PMCID: PMC5352524 DOI: 10.1111/dme.13301] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/08/2016] [Indexed: 01/30/2023]
Abstract
AIM To investigate the association between changes in oestradiol and follicle-stimulating hormone levels during the menopausal transition and incident diabetes. METHODS We followed 1407 pre-menopausal women, aged 42-52 years at baseline, who experienced natural menopause, from baseline to the 12th annual follow-up visit in the Study of Women's Health Across the Nation (SWAN). Diabetes was defined based on fasting glucose level, medication use and self-report of physician diagnosis. Cox proportional hazards regression was used to evaluate the associations of incident diabetes with three components of the rate of change in hormones: the intercept (pre-menopausal levels) and two piece-wise slopes representing change during the early and late transition, respectively. RESULTS During 15 years of follow-up, 132 women developed diabetes. After adjusting for potential confounders, a higher oestradiol intercept, but not its rate of change, was borderline significantly associated with lower risk of diabetes [hazard ratio for an interquartile range increase (75.2 pmol/L) 0.53, 95% CI 0.27-1.06]. For follicle-stimulating hormone, a greater rate of increase in the early transition, but not the intercept or late transition, was significantly associated with lower risk of diabetes [hazard ratio for an interquartile range increase (5.9 IU/L/year) 0.31, 95% CI 0.10-0.94]. CONCLUSIONS Lower pre-menopausal oestradiol levels and a slower rate of follicle-stimulating hormone change during the early transition were associated with higher risk of developing diabetes. Given that obesity plays an important role in diabetes risk and in the levels and changes in oestradiol and follicle-stimulating hormone over the menopausal transition, weight control in earlier mid-life is important to prevent future diabetes development.
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Affiliation(s)
- S K Park
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - S D Harlow
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - H Zheng
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - C Karvonen-Gutierrez
- Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - R C Thurston
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
| | - K Ruppert
- Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, USA
| | - I Janssen
- Department of Preventive Medicine, Rush University Medical Center, Chicago, IL, USA
| | - J F Randolph
- Division of Reproductive Endocrinology and Infertility, University of Michigan Health System, Ann Arbor, MI, USA
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248
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Anti-osteoporotic effects of an antidepressant tianeptine on ovariectomized rats. Biomed Pharmacother 2017; 87:575-582. [DOI: 10.1016/j.biopha.2017.01.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/01/2017] [Accepted: 01/01/2017] [Indexed: 11/23/2022] Open
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249
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Shao MJ, Zhu YJ, Qiu YE, Hu M, He YQ. Changes in the Level of Immunoglobulins and CD4/CD8 Ratio in Young and Aged Mice with Estradiol Deficiency. Immunol Invest 2017; 46:305-313. [PMID: 28332870 DOI: 10.1080/08820139.2016.1267203] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Studies demonstrated that deficiency in 17β-estradiol (E2) in postmenopausal women influences their immune system. However, few studies have reported alterations in immunologic presentation during nonnatural menopause in young females. Here we compared the differences in immune response between young C57BL/6N mice with surgical or medical variectomy and aged C57BL/6N mice with the common feature of E2 deficiency following Con A stimulation. We observed inverted CD4/CD8 ratios in the aged group and apparent reduced production of serum immunoglobin (Ig)G, IgA, and IgM in the surgical group, whereas changes in immune parameters in the medical group were moderate. These data suggested that the immunological response to Con A stimulus differed among the three groups and that E2 deficiency was only partially responsible for the development of immune deficiency in aged mice.
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Affiliation(s)
- Ming-Jun Shao
- a Department of Obstetrics and Gynecology , Jinhua Municipal Central Hospital , Zhejiang Province , People's Republic of China
| | - Yi-Jun Zhu
- a Department of Obstetrics and Gynecology , Jinhua Municipal Central Hospital , Zhejiang Province , People's Republic of China
| | - Ying-Er Qiu
- b Jinhua Drug Checking Institute , Zhejiang Province , People's Republic of China
| | - Min Hu
- a Department of Obstetrics and Gynecology , Jinhua Municipal Central Hospital , Zhejiang Province , People's Republic of China
| | - Yun-Qin He
- a Department of Obstetrics and Gynecology , Jinhua Municipal Central Hospital , Zhejiang Province , People's Republic of China
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250
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Shapses SA, Pop LC, Wang Y. Obesity is a concern for bone health with aging. Nutr Res 2017; 39:1-13. [PMID: 28385284 DOI: 10.1016/j.nutres.2016.12.010] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/16/2016] [Accepted: 12/27/2016] [Indexed: 02/08/2023]
Abstract
Accumulating evidence supports a complex relationship between adiposity and osteoporosis in overweight/obese individuals, with local interactions and endocrine regulation by adipose tissue on bone metabolism and fracture risk in elderly populations. This review was conducted to summarize existing evidence to test the hypothesis that obesity is a risk factor for bone health in aging individuals. Mechanisms by which obesity adversely affects bone health are believed to be multiple, such as an alteration of bone-regulating hormones, inflammation, oxidative stress, the endocannabinoid system, that affect bone cell metabolism are discussed. In addition, evidence on the effect of fat mass and distribution on bone mass and quality is reviewed together with findings relating energy and fat intake with bone health. In summary, studies indicate that the positive effects of body weight on bone mineral density cannot counteract the detrimental effects of obesity on bone quality. However, the exact mechanism underlying bone deterioration in the obese is not clear yet and further research is required to elucidate the effect of adipose depots on bone and fracture risk in the obese population.
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Affiliation(s)
- Sue A Shapses
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ.
| | - L Claudia Pop
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ
| | - Yang Wang
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ
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