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Shorthill SK, Jones TLM, Woulfe KC, Cherrington BD, Bruns DR. The influence of estrogen on myocardial post-translational modifications and cardiac function in women. Can J Physiol Pharmacol 2024; 102:452-464. [PMID: 38266237 DOI: 10.1139/cjpp-2023-0412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
The lifetime risk of heart failure (HF) is comparable in men and women; nevertheless, disparities exist in our understanding of how HF differs between sexes. Several differences in cardiac physiology exist between men and women including the propensity to develop specific HF phenotypes. Men are more likely to be diagnosed with HF failure with reduced ejection fraction, while women have a greater propensity to develop HF with preserved ejection fraction. The mechanisms responsible for these differences remain unclear. Post-translational modifications (PTMs) of myofilament proteins likely contribute to these sex-specific propensities. The role of PTMs in heart disease is an expanding field with immense potential therapeutic targets. However, numerous PTMs remain underexplored, particularly in the context of the female heart. Estrogen, a key gonadal hormone, cardioprotective in pre-menopausal women and its loss with menopause likely contributes to disease in aging women. However, how estrogen regulates PTMs to contribute to HF development is not fully clear. This review outlines key sex differences in HF along with characterizing the contributions of novel myocardial PTMs in cardiac physiology and their regulation by estrogen. Collectively, we highlight the necessity for further investigation into women's heart health and the distinctive mechanisms distinguishing women from men.
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Affiliation(s)
| | - Timothy L M Jones
- Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kathleen C Woulfe
- Division of Cardiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Brian D Cherrington
- Department of Zoology and Physiology, University of Wyoming, Laramie, WY, USA
| | - Danielle R Bruns
- Division of Kinesiology and Health, University of Wyoming, Laramie, WY, USA
- Department of Zoology and Physiology, University of Wyoming, Laramie, WY, USA
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2
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Andreadou I, Efentakis P, Frenis K, Daiber A, Schulz R. Thiol-based redox-active proteins as cardioprotective therapeutic agents in cardiovascular diseases. Basic Res Cardiol 2021; 116:44. [PMID: 34275052 DOI: 10.1007/s00395-021-00885-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 06/17/2021] [Indexed: 12/12/2022]
Abstract
Thiol-based redox compounds, namely thioredoxins (Trxs), glutaredoxins (Grxs) and peroxiredoxins (Prxs), stand as a pivotal group of proteins involved in antioxidant processes and redox signaling. Glutaredoxins (Grxs) are considered as one of the major families of proteins involved in redox regulation by removal of S-glutathionylation and thereby reactivation of other enzymes with thiol-dependent activity. Grxs are also coupled to Trxs and Prxs recycling and thereby indirectly contribute to reactive oxygen species (ROS) detoxification. Peroxiredoxins (Prxs) are a ubiquitous family of peroxidases, which play an essential role in the detoxification of hydrogen peroxide, aliphatic and aromatic hydroperoxides, and peroxynitrite. The Trxs, Grxs and Prxs systems, which reversibly induce thiol modifications, regulate redox signaling involved in various biological events in the cardiovascular system. This review focuses on the current knowledge of the role of Trxs, Grxs and Prxs on cardiovascular pathologies and especially in cardiac hypertrophy, ischemia/reperfusion (I/R) injury and heart failure as well as in the presence of cardiovascular risk factors, such as hypertension, hyperlipidemia, hyperglycemia and metabolic syndrome. Further studies on the roles of thiol-dependent redox systems in the cardiovascular system will support the development of novel protective and therapeutic strategies against cardiovascular diseases.
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Affiliation(s)
- Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece.
| | - Panagiotis Efentakis
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
| | - Katie Frenis
- Department of Cardiology 1, Molecular Cardiology, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany
| | - Andreas Daiber
- Department of Cardiology 1, Molecular Cardiology, University Medical Center of the Johannes Gutenberg University, Langenbeckstr. 1, 55131, Mainz, Germany.,Partner Site Rhine-Main, German Center for Cardiovascular Research (DZHK), Langenbeckstr 1, 55131, Mainz, Germany
| | - Rainer Schulz
- Institute of Physiology, Justus Liebig University Giessen, Giessen, Germany.
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3
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Protective Effects of Estrogen on Cardiovascular Disease Mediated by Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5523516. [PMID: 34257804 PMCID: PMC8260319 DOI: 10.1155/2021/5523516] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/16/2021] [Accepted: 05/22/2021] [Indexed: 02/07/2023]
Abstract
Perimenopause is an important stage of female senescence. Epidemiological investigation has shown that the incidence of cardiovascular disease in premenopausal women is lower than that in men, and the incidence of cardiovascular disease in postmenopausal women is significantly higher than that in men. This phenomenon reveals that estrogen has a definite protective effect on the cardiovascular system. In the cardiovascular system, oxidative stress is considered important in the pathogenesis of atherosclerosis, myocardial dysfunction, cardiac hypertrophy, heart failure, and myocardial ischemia. From the perspective of oxidative stress, estrogen plays a regulatory role in the cardiovascular system through the estrogen receptor, providing strategies for the treatment of menopausal women with cardiovascular diseases.
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4
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Anjos M, Fontes-Oliveira M, Costa VM, Santos M, Ferreira R. An update of the molecular mechanisms underlying doxorubicin plus trastuzumab induced cardiotoxicity. Life Sci 2021; 280:119760. [PMID: 34166713 DOI: 10.1016/j.lfs.2021.119760] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 06/11/2021] [Accepted: 06/11/2021] [Indexed: 12/24/2022]
Abstract
Cardiotoxicity is a major side effect of the chemotherapeutic drug doxorubicin (Dox), which is further exacerbated when it is combined with trastuzumab, a standard care approach for Human Epidermal growth factor Receptor-type 2 (HER2) positive cancer patients. However, the molecular mechanisms of the underlying cardiotoxicity of this combination are still mostly elusive. Increased oxidative stress, impaired energetic substrate uses and topoisomerase IIB inhibition are among the biological processes proposed to explain Dox-induced cardiomyocyte dysfunction. Since cardiomyocytes express HER2, trastuzumab can also damage these cells by interfering with neuroregulin-1 signaling and mitogen-activated protein kinase (MAPK), phosphoinositide 3-kinase (PI3K)/Akt and focal adhesion kinase (FAK)-dependent pathways. Nevertheless, Dox and trastuzumab target other cardiac cell types, such as endothelial cells, fibroblasts, cardiac progenitor cells and leukocytes, which can contribute to the clinical cardiotoxicity observed. This review aims to summarize the current knowledge on the cardiac signaling pathways modulated by these two antineoplastic drugs highly used in the management of breast cancer, not only focusing on cardiomyocytes but also to broaden the knowledge of the potential impact on other cells found in the heart.
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Affiliation(s)
- Miguel Anjos
- LAQV/REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | | | - Vera M Costa
- UCIBIO/REQUIMTE, Laboratory of Toxicology, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Mário Santos
- Cardiology Department, Centro Hospitalar Universitário do Porto, Porto, Portugal; UMIB, Institute of Biomedical Sciences Abel Salazar, University of Porto, Portugal
| | - Rita Ferreira
- LAQV/REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal.
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5
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Curcumin, oxidative stress, and breast cancer. Cancer 2021. [DOI: 10.1016/b978-0-12-819547-5.00032-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Jiaji (EX-B2)-Based Electroacupuncture Preconditioning Attenuates Early Ischaemia Reperfusion Injury in the Rat Myocardium. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:8854033. [PMID: 33376501 PMCID: PMC7738790 DOI: 10.1155/2020/8854033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 11/06/2020] [Accepted: 11/21/2020] [Indexed: 12/17/2022]
Abstract
Background Acupuncture preconditioning was able to reduce the extent of ischaemia reperfusion (I/R) injury. Previous studies have shown that electroacupuncture (EA) pretreatment at T4-T5 Jiaji (EX-B2) acupoints had cardioprotective effects against myocardial I/R injury. However, the molecular mechanism remains inconclusive. Methods Wistar rats were pretreated with electroacupuncture for 7 days at the Neiguan (PC6), T4-T5 Jiaji (EX-B2), Yanglingquan (GB34), and Quchi (LI11) acupoints, which belong to different meridians. Then, we investigated the genome-wide gene expression profiles of rats prestimulated at these acupoints after I/R injury. Results Our study revealed previously unknown cardioprotective roles of T4-T5 Jiaji (EX-B2) acupoints in the I/R progression. The extent of myocardial injury was significantly decreased in the Jiaji group compared with the I/R group. In addition, our data are among the first to link the EA preconditioning at Neiguan (PC6) acupoints and circadian rhythm in the I/R model. Also, for the first time, we explored the meridian and acupoint specificity involved in EA pretreatment at the heart meridian, in which Yanglingquan and Quchi acupoints were selected as the control group for heart-divergent-meridian and nonheart-meridian acupoints. Conclusions The present study suggested that EA pretreatment at Jiaji alters genome-wide gene expression and protects the rat myocardium against I/R injury, which are most likely through neurohumoral regulation.
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Filiponi M, Gougoura SG, Befani C, Bargiota Α, Liakos P, Koukoulis GN. 17-β estradiol attenuates the pro-oxidant activity of corticotropin-releasing hormone in macroendothelial cells. Cell Biol Int 2019; 43:1407-1415. [PMID: 31141240 DOI: 10.1002/cbin.11188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 05/25/2019] [Indexed: 01/24/2023]
Abstract
Corticotropin-releasing hormone, which is the predominant regulator of neuroendocrine responses to stress, attenuates inflammation through stimulation of glucocorticoid release. Enhanced corticotropin-releasing hormone expression has been detected in inflammatory cells of the vascular endothelium, where it acts as a local regulator of endothelial redox homeostasis. Estrogens have beneficial effects on endothelial integrity and function, though the mechanism underlying their antioxidative effect remains as yet largely unknown. We therefore investigated the effect of 17β-estradiol on pro-oxidant action of corticotropin-releasing hormone in vitro in macroendothelial cells, and, more specifically, the role of 17β-estradiol on corticotropin-releasing hormone-induced activities/release of the antioxidant enzymes namely, endothelial nitric oxide synthase, superoxide dismutase, catalase, and glutathione. We observed that 17β-estradiol abolished the stimulatory effect of corticotropin-releasing hormone on intracellular reactive oxygen species levels and counteracted its inhibitory effect on endothelial nitric oxide synthase activity and nitric oxide release. In addition, 17β-estradiol significantly induced superoxide dismutase and catalase activity, an effect that was not significantly influenced by corticotropin-releasing hormone. Finally, 17β-estradiol significantly increased glutathione levels and the glutathione/glutathione + glutathione disulfide ratio, an action that was partially blocked by corticotropin-releasing hormone. Our results reveal that 17β-estradiol counterbalances corticotropin-releasing hormone-mediated pro-inflammatory action and thereby maintains the physiological threshold of the endothelial cell redox environment. These observations may be of importance, considering the protective role of estrogen in the development of atherosclerosis.
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Affiliation(s)
- Maria Filiponi
- Department of Endocrinology and Metabolic Diseases, Research Laboratory, Larissa University Hospital, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Sofia G Gougoura
- Department of Endocrinology and Metabolic Diseases, Research Laboratory, Larissa University Hospital, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Christina Befani
- Laboratory of Biochemistry, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Αlexandra Bargiota
- Department of Endocrinology and Metabolic Diseases, Research Laboratory, Larissa University Hospital, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - Panagiotis Liakos
- Laboratory of Biochemistry, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
| | - George N Koukoulis
- Department of Endocrinology and Metabolic Diseases, Research Laboratory, Larissa University Hospital, Faculty of Medicine, University of Thessaly, Biopolis, 41500, Larissa, Greece
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Mishima E, Sato E, Ito J, Yamada KI, Suzuki C, Oikawa Y, Matsuhashi T, Kikuchi K, Toyohara T, Suzuki T, Ito S, Nakagawa K, Abe T. Drugs Repurposed as Antiferroptosis Agents Suppress Organ Damage, Including AKI, by Functioning as Lipid Peroxyl Radical Scavengers. J Am Soc Nephrol 2019; 31:280-296. [PMID: 31767624 DOI: 10.1681/asn.2019060570] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Accepted: 10/17/2019] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Ferroptosis, nonapoptotic cell death mediated by free radical reactions and driven by the oxidative degradation of lipids, is a therapeutic target because of its role in organ damage, including AKI. Ferroptosis-causing radicals that are targeted by ferroptosis suppressors have not been unequivocally identified. Because certain cytochrome P450 substrate drugs can prevent lipid peroxidation via obscure mechanisms, we evaluated their antiferroptotic potential and used them to identify ferroptosis-causing radicals. METHODS Using a cell-based assay, we screened cytochrome P450 substrate compounds to identify drugs with antiferroptotic activity and investigated the underlying mechanism. To evaluate radical-scavenging activity, we used electron paramagnetic resonance-spin trapping methods and a fluorescence probe for lipid radicals, NBD-Pen, that we had developed. We then assessed the therapeutic potency of these drugs in mouse models of cisplatin-induced AKI and LPS/galactosamine-induced liver injury. RESULTS We identified various US Food and Drug Administration-approved drugs and hormones that have antiferroptotic properties, including rifampicin, promethazine, omeprazole, indole-3-carbinol, carvedilol, propranolol, estradiol, and thyroid hormones. The antiferroptotic drug effects were closely associated with the scavenging of lipid peroxyl radicals but not significantly related to interactions with other radicals. The elevated lipid peroxyl radical levels were associated with ferroptosis onset, and known ferroptosis suppressors, such as ferrostatin-1, also functioned as lipid peroxyl radical scavengers. The drugs exerted antiferroptotic activities in various cell types, including tubules, podocytes, and renal fibroblasts. Moreover, in mice, the drugs ameliorated AKI and liver injury, with suppression of tissue lipid peroxidation and decreased cell death. CONCLUSIONS Although elevated lipid peroxyl radical levels can trigger ferroptosis onset, some drugs that scavenge lipid peroxyl radicals can help control ferroptosis-related disorders, including AKI.
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Affiliation(s)
- Eikan Mishima
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and
| | - Emiko Sato
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and.,Department of Clinical Pharmacology and Therapeutics, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Junya Ito
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Ken-Ichi Yamada
- Physical Chemistry for Life Science Laboratory, Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Chitose Suzuki
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and
| | | | | | - Koichi Kikuchi
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and
| | | | - Takehiro Suzuki
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and
| | - Sadayoshi Ito
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and.,Katta Public General Hospital, Shiroishi, Japan; and
| | - Kiyotaka Nakagawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
| | - Takaaki Abe
- Divisions of Nephrology, Endocrinology, and Vascular Medicine and.,Department of Medical Science, Tohoku University Graduate School of Biomedical Engineering, Sendai, Japan.,Department of Clinical Biology and Hormonal Regulation, Tohoku University Graduate School of Medicine, Sendai, Japan
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Farruggio S, Raina G, Cocomazzi G, Librasi C, Mary D, Gentilli S, Grossini E. Genistein improves viability, proliferation and mitochondrial function of cardiomyoblasts cultured in physiologic and peroxidative conditions. Int J Mol Med 2019; 44:2298-2310. [DOI: 10.3892/ijmm.2019.4365] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 08/02/2019] [Indexed: 11/06/2022] Open
Affiliation(s)
- Serena Farruggio
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
| | - Giulia Raina
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
| | - Grazia Cocomazzi
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
| | - Carlotta Librasi
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
| | - David Mary
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
| | - Sergio Gentilli
- General Surgery Unit, Department of Health of Sciences, University of East Piedmont; University Hospital Company Major of Charity, I‑28100 Novara, Italy
| | - Elena Grossini
- Laboratory of Physiology and Experimental Surgery, Department of Translational Medicine, AGING Project, University of East Piedmont, I‑28100 Novara, Italy
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Torok ZA, Busekrus RB, Hydock DS. Effects of Creatine Supplementation on Muscle Fatigue in Rats Receiving Doxorubicin Treatment. Nutr Cancer 2019; 72:252-259. [PMID: 31184509 DOI: 10.1080/01635581.2019.1623900] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The purpose of this study was to investigate the effects of in vivo creatine monohydrate (Cr) supplementation on doxorubicin (Dox)-induced muscle dysfunction. Male rats were fed a diet supplemented with 3% Cr or a standard chow for 2 wk. After 2 wk of feeding, animals received Dox or saline as a placebo. Five days post-injection, grip strength was measured, and muscle fatigue was analyzed ex vivo. When compared with controls, a significantly lower grip strength was observed with Dox treatment, but no significant handgrip difference was observed with Cr feeding prior to Dox treatment when compared to controls. In the isolated muscle fatigue experiments, solei (primarily type I muscle) from controls produced significantly less force than baseline at 60 s and solei from Dox treated rats produced significantly less force than baseline at 30 s; however, Cr feeding prior to Dox produced significantly less force than baseline at 60 s. In the primarily type II EDL, a decline in force production from baseline was observed at 50 s in controls and Cr + Dox and at 20 s in standard chow + Dox. Cr attenuated the increase in fatigue that accompanies Dox treatment suggesting that Cr supplementation may have use in managing Dox myotoxicity.
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Affiliation(s)
- Zoltan A Torok
- School of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorado, USA
| | - Raquel B Busekrus
- School of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorado, USA
| | - David S Hydock
- School of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorado, USA.,The University of Northern Colorado Cancer Rehabilitation Institute, University of Northern Colorado, Greeley, Colorado, USA
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Zsido RG, Heinrich M, Slavich GM, Beyer F, Kharabian Masouleh S, Kratzsch J, Raschpichler M, Mueller K, Scharrer U, Löffler M, Schroeter ML, Stumvoll M, Villringer A, Witte AV, Sacher J. Association of Estradiol and Visceral Fat With Structural Brain Networks and Memory Performance in Adults. JAMA Netw Open 2019; 2:e196126. [PMID: 31225892 PMCID: PMC6593958 DOI: 10.1001/jamanetworkopen.2019.6126] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
IMPORTANCE Changes in estradiol during aging are associated with increased dementia risk. It remains unclear how estradiol supports cognitive health and whether risk factors, such as midlife obesity, are exacerbated by estrogen loss. OBJECTIVES To assess whether visceral adipose tissue (VAT) moderates the association between age and brain network structure and to investigate whether estradiol moderates the association between VAT and brain network structure. DESIGN, SETTING, AND PARTICIPANTS Cross-sectional study of data from 974 cognitively healthy adults in Germany who participated in the Health Study of the Leipzig Research Centre for Civilization Diseases, a previously described population-based cohort study. Two moderation analyses were performed, including VAT as the moderator variable between age and brain network structure and estradiol as the moderator variable between VAT and brain network structure. The study was conducted from August 1, 2011, to November 23, 2014. Analyses were conducted from August 2017 to September 2018. EXPOSURES Serum estradiol levels from fasting blood and visceral adipose tissue volume from T1-weighted magnetic resonance imaging (MRI). MAIN OUTCOMES AND MEASURES Brain network covariance (individual loading on structural network derived from T1-weighted MRI) and memory performance (composite score from the Consortium to Establish a Registry for Alzheimer Disease [CERAD] verbal episodic memory test on learning [score range, 0-30], recall [score range, 0-10], and recognition [score range, 0-20]). RESULTS Final analyses included data from 473 women (mean [SD] age, 50.10 [15.63] years) and 501 men (mean [SD] age, 51.24 [15.67] years). Visceral adipose tissue was associated with an exacerbation of the negative association of aging with network covariance for women (interaction term β = -0.02; 95% bias-corrected bootstrap CI, -0.03 to -0.01; P = .001) and men (interaction term β = -0.02; 95% bias-corrected bootstrap CI, -0.03 to -0.01; P < .001). Estradiol level was associated with a reduction in the negative association of VAT with network covariance in women (interaction term β = 0.63; 95% bias-corrected bootstrap CI, 0.14-1.12; P = .01), with no significant association in men. In the female midlife subgroup (age range, 35-55 years, when menopause transition occurs), low estradiol levels were associated with lower memory network covariance (Cohen d = 0.61; t80 = 2.76; P = .007) and worse memory performance (Cohen d = 0.63; t76 = 2.76; P = .007). CONCLUSIONS AND RELEVANCE This study reports a novel association between VAT, estradiol, and structural brain networks as a potential mechanism underlying cognitive decline in women. These findings appear to highlight the need for sex-specific strategies, including VAT and hormonal screening during midlife, to support healthy cognitive aging.
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Affiliation(s)
- Rachel G Zsido
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Emotion Neuroimaging Lab, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Matthias Heinrich
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Emotion Neuroimaging Lab, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - George M Slavich
- Cousins Center for Psychoneuroimmunology, Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles
| | - Frauke Beyer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Subproject A1, Collaborative Research Centre 1052 "Obesity Mechanisms," University of Leipzig, Leipzig, Germany
| | | | - Juergen Kratzsch
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig, Leipzig, Germany
| | - Matthias Raschpichler
- Heart Center Leipzig, Department of Cardiac Surgery, Leipzig, Germany
- Integrated Research and Treatment Center (IFB) Adiposity Diseases Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Karsten Mueller
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
| | - Ulrike Scharrer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Emotion Neuroimaging Lab, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
| | - Markus Löffler
- Institute for Medical Informatics, Statistics, and Epidemiology (IMISE), University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases (LIFE), University of Leipzig, Leipzig, Germany
| | - Matthias L Schroeter
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases (LIFE), University of Leipzig, Leipzig, Germany
| | - Michael Stumvoll
- Subproject A1, Collaborative Research Centre 1052 "Obesity Mechanisms," University of Leipzig, Leipzig, Germany
- Integrated Research and Treatment Center (IFB) Adiposity Diseases Faculty of Medicine, University of Leipzig, Leipzig, Germany
| | - Arno Villringer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
- Leipzig Research Center for Civilization Diseases (LIFE), University of Leipzig, Leipzig, Germany
| | - A Veronica Witte
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Subproject A1, Collaborative Research Centre 1052 "Obesity Mechanisms," University of Leipzig, Leipzig, Germany
| | - Julia Sacher
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Emotion Neuroimaging Lab, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany
- Clinic for Cognitive Neurology, University of Leipzig, Leipzig, Germany
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12
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Yu N, Song N, Liu CY, Yang GL. The estrogen‑like protective effect of Lycium barbarum polysaccharides in reducing oxidative stress on myocardial cells from ovariectomized rats. Mol Med Rep 2019; 19:2271-2278. [PMID: 30664163 DOI: 10.3892/mmr.2019.9880] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Accepted: 11/10/2017] [Indexed: 11/06/2022] Open
Abstract
Previous studies have demonstrated that ovariectomy may lead to a reduction in antioxidative biomarkers in the myocardium, thus suggesting that estrogens may serve a protective role in the suppression of oxidative stress. Lycium barbarum polysaccharides (LBP) are a well‑known antioxidant Chinese traditional medicine, which appear to have a similar function to estrogens with regards to the regulation of cardiac function. In the present study, 30 Sprague‑Dawley rats were randomly divided into the following groups: Sham operation group, ovariectomized (OVX) group, estradiol valerate group, high‑dose LBP (LBP‑H) group and low‑dose LBP (LBP‑L) group. All of the rats were provided tap water, estradiol valerate or LBP for 12 weeks. In addition, all rats were ovariectomized, with the exception of rats in the sham operation group, which underwent fat removal only. Reactive oxygen species (ROS), malondialdehyde (MDA), glutathione peroxidase (GSH‑px), catalase (CAT) and superoxide dismutase activities were subsequently examined. The protein expression levels of cleaved caspase‑9, cleaved caspase‑3 and phosphorylated‑protein kinase B (p‑Akt) were also assessed. The results demonstrated that high‑dose LBP decreased the enhanced levels of ROS and MDA in OVX rats, whereas GSH‑px and CAT activities were increased in the LBP‑H group compared with in OVX rats. Furthermore, the expression levels of cleaved caspase‑9 and cleaved caspase‑3 were significantly upregulated in the OVX group, whereas high‑dose LBP exerted protective effects on OVX rats by decreasing the expression of apoptotic proteins. Conversely, p‑Akt expression was decreased in the OVX group and was increased in the LBP‑H group. These results indicated that LBP is essentially involved in cardiac protection by inhibiting apoptosis in response to oxidative stress. In addition, improvement of antioxidant status by LBP is associated with the Akt signaling pathway in the myocardium of OVX rats.
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Affiliation(s)
- Ning Yu
- Graduate School, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, P.R. China
| | - Nan Song
- Key Laboratory of Ministry of Education for TCM Viscera‑State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, P.R. China
| | - Chun Ying Liu
- Graduate School, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, P.R. China
| | - Guan Lin Yang
- Key Laboratory of Ministry of Education for TCM Viscera‑State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, P.R. China
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Kaushal JB, Popli P, Sankhwar P, Shukla V, Dwivedi A. Sonic hedgehog protects endometrial hyperplasial cells against oxidative stress via suppressing mitochondrial fission protein dynamin-like GTPase (Drp1). Free Radic Biol Med 2018; 129:582-599. [PMID: 30347228 DOI: 10.1016/j.freeradbiomed.2018.10.427] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 10/12/2018] [Accepted: 10/14/2018] [Indexed: 02/07/2023]
Abstract
Hh/Gli1 cascade as well as Gsk3β-Gli1 crosstalk play crucial role in estrogen-dependent progression of endometrial hyperplasia (EH). However, the underlying mechanisms involved in progression of disease still remain unclear. In the present study, we explored the role of Hh signaling in protection of endometrial hyperplasial cells against oxidative stress and the underlying mechanism involved therein. EH cells were found to be more resistant towards H2O2-induced oxidative stress (IC50: ~ 3×) as compared with normal endometrial cells. Estrogen (E2) pre-treatment followed by cytotoxic dose of H2O2, almost rescued the EH cells from apoptosis and caused the increased expression of downstream Shh signaling molecules i.e., Smo, Ptch and Gli1. Whereas pretreatment with cyclopamine was not able to curtail H2O2-induced effects indicating that estrogen protects these cells via activation of Shh pathway. Further, H2O2-induced ROS and lipid peroxidation alongwith decreased activities of antioxidant enzymes glutathione peroxidase and superoxide dismutase were found to be reversed in EH cells pre-exposed to E2 or rShh. The rShh suppressed H2O2-induced cell death and caused attenuation of mitochondrial apoptotic mediators and prevented disruption in mitochondrial morphology and mitochondrial membrane potential in EH cells. The functional blockage of signaling by Shh siRNA or Gli1siRNA led to significantly increased expression of mitochondrial fission protein dynamin-like GTPase (Drp1). The H2O2-treated EH cells showed diminished Gli1 and increased Drp1 expression, concurrent with reduced p-Drp1-(serine637). Whereas rShh pre-treated EH cells presented normal mitochondrial dynamics with dense, long networks of mitochondria alongwith nuclear accumulation of Gli1 and the decreased expression of Drp1. Overall, our results implicated that Shh signaling modulates antioxidant defense system and stabilizes mitochondrial dynamics by suppressing Drp1 protein which maintains survival of EH cells against oxidative stress.
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Affiliation(s)
- Jyoti B Kaushal
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India
| | - Pooja Popli
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India
| | - Pushplata Sankhwar
- Department of Obstetrics & Gynaecology, King George's Medical University, Lucknow 226003, U.P., India
| | - Vinay Shukla
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India
| | - Anila Dwivedi
- Division of Endocrinology, CSIR-Central Drug Research Institute, Lucknow 226031, U.P., India; Academy of Scientific and Innovative Research (AcSIR), CSIR-CDRI Campus, Lucknow 226031, U.P., India.
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14
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Celestino I, Checconi P, Amatore D, De Angelis M, Coluccio P, Dattilo R, Alunni Fegatelli D, Clemente AM, Matarrese P, Torcia MG, Mancinelli R, Mammola CL, Garaci E, Vestri AR, Malorni W, Palamara AT, Nencioni L. Differential Redox State Contributes to Sex Disparities in the Response to Influenza Virus Infection in Male and Female Mice. Front Immunol 2018; 9:1747. [PMID: 30105026 PMCID: PMC6077261 DOI: 10.3389/fimmu.2018.01747] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 07/16/2018] [Indexed: 12/29/2022] Open
Abstract
Influenza virus replicates intracellularly exploiting several pathways involved in the regulation of host responses. The outcome and the severity of the infection are thus strongly conditioned by multiple host factors, including age, sex, metabolic, and redox conditions of the target cells. Hormones are also important determinants of host immune responses to influenza and are recently proposed in the prophylaxis and treatment. This study shows that female mice are less susceptible than males to mouse-adapted influenza virus (A/PR8/H1N1). Compared with males, PR8-infected females display higher survival rate (+36%), milder clinical disease, and less weight loss. They also have milder histopathological signs, especially free alveolar area is higher than that in males, even if pro-inflammatory cytokine production shows slight differences between sexes; hormone levels, moreover, do not vary significantly with infection in our model. Importantly, viral loads (both in terms of viral M1 RNA copies and tissue culture infectious dose 50%) are lower in PR8-infected females. An analysis of the mechanisms contributing to sex disparities observed during infection reveals that the female animals have higher total antioxidant power in serum and their lungs are characterized by increase in (i) the content and biosynthesis of glutathione, (ii) the expression and activity of antioxidant enzymes (peroxiredoxin 1, catalase, and glutathione peroxidase), and (iii) the expression of the anti-apoptotic protein Bcl-2. By contrast, infected males are characterized by high expression of NADPH oxidase 4 oxidase and phosphorylation of p38 MAPK, both enzymes promoting viral replication. All these factors are critical for cell homeostasis and susceptibility to infection. Reappraisal of the importance of the host cell redox state and sex-related effects may be useful in the attempt to develop more tailored therapeutic interventions in the fight against influenza.
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Affiliation(s)
- Ignacio Celestino
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Paola Checconi
- San Raffaele Pisana, IRCCS, Telematic University, Rome, Italy
| | - Donatella Amatore
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Marta De Angelis
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Paolo Coluccio
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Rosanna Dattilo
- Department of Hematology, Oncology and Molecular Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Danilo Alunni Fegatelli
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Ann Maria Clemente
- Department of Clinical and Experimental Medicine, University of Florence, Florence, Italy
| | - Paola Matarrese
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Maria Gabriella Torcia
- Department of Clinical and Experimental Medicine, University of Florence, Florence, Italy
| | - Romina Mancinelli
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Caterina Loredana Mammola
- Department of Anatomical, Histological, Forensic Medicine and Orthopedic Sciences, Sapienza University of Rome, Rome, Italy
| | - Enrico Garaci
- San Raffaele Pisana, IRCCS, Telematic University, Rome, Italy
| | - Anna Rita Vestri
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
| | - Walter Malorni
- Center for Gender-Specific Medicine, Istituto Superiore di Sanità, Rome, Italy
| | - Anna Teresa Palamara
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
- San Raffaele Pisana, IRCCS, Telematic University, Rome, Italy
| | - Lucia Nencioni
- Department of Public Health and Infectious Diseases, Pasteur Institute Cenci Bolognetti Foundation, Sapienza University of Rome, Rome, Italy
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15
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Pokrzywinski KL, Biel TG, Rosen ET, Bonanno JL, Aryal B, Mascia F, Moshkelani D, Mog S, Rao VA. Doxorubicin-induced cardiotoxicity is suppressed by estrous-staged treatment and exogenous 17β-estradiol in female tumor-bearing spontaneously hypertensive rats. Biol Sex Differ 2018; 9:25. [PMID: 29907135 PMCID: PMC6003183 DOI: 10.1186/s13293-018-0183-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 05/28/2018] [Indexed: 12/04/2022] Open
Abstract
Background Doxorubicin (DOX), an anthracycline therapeutic, is widely used to treat a variety of cancer types and known to induce cardiomyopathy in a time and dose-dependent manner. Postmenopausal and hypertensive females are two high-risk groups for developing adverse effects following DOX treatment. This may suggest that endogenous reproductive hormones can in part suppress DOX-induced cardiotoxicity. Here, we investigated if the endogenous fluctuations in 17β-estradiol (E2) and progesterone (P4) can in part suppress DOX-induced cardiomyopathy in SST-2 tumor-bearing spontaneously hypersensitive rats (SHRs) and evaluate if exogenous administration of E2 and P4 can suppress DOX-induced cardiotoxicity in tumor-bearing ovariectomized SHRs (ovaSHRs). Methods Vaginal cytology was performed on all animals to identify the stage of the estrous cycle. Estrous-staged SHRs received a single injection of saline, DOX, dexrazoxane (DRZ), or DOX combined with DRZ. OvaSHRs were implanted with time-releasing pellets that contained a carrier matrix (control), E2, P4, Tamoxifen (Tam), and combinations of E2 with P4 and Tam. Hormone pellet-implanted ovaSHRs received a single injection of saline or DOX. Cardiac troponin I (cTnI), E2, and P4 serum concentrations were measured before and after treatment in all animals. Cardiac damage and function were further assessed by echocardiography and histopathology. Weight, tumor size, and uterine width were measured for all animals. Results In SHRs, estrous-staged DOX treatment altered acute estrous cycling that ultimately resulted in prolonged diestrus. Twelve days after DOX administration, all SHRs had comparable endogenous circulating E2. Thirteen days after DOX treatment, SHRs treated during proestrus had decreased cardiac output and increased cTnI as compared to animals treated during estrus and diestrus. DOX-induced tumor reduction was not affected by estrous-staged treatments. In ovaSHRs, exogenous administration of E2 suppressed DOX-induced cardiotoxicity, while P4-implanted ovaSHRs were partly resistant. However, ovaSHRs treated with E2 and P4 did not have cardioprotection against DOX-induced damage. Conclusions This study demonstrates that estrous-staged treatments can alter the extent of cardiac damage caused by DOX in female SHRs. The study also supports that exogenous E2 can suppress DOX-induced myocardial damage in ovaSHRs. Electronic supplementary material The online version of this article (10.1186/s13293-018-0183-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kaytee L Pokrzywinski
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Thomas G Biel
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Elliot T Rosen
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Julia L Bonanno
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Baikuntha Aryal
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Francesca Mascia
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA
| | - Delaram Moshkelani
- Division of Process Assessment III, Office of Process and Facilities, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, Silver Spring, MD, USA
| | - Steven Mog
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, MD, USA
| | - V Ashutosh Rao
- Laboratory of Applied Biochemistry, Division of Biotechnology Review and Research III, Office of Biotechnology Research, Center for Drug Evaluation and Research, U.S. Food and Drug Administration, 10903 New Hampshire Ave., Bldg., Silver Spring, MD, 20993, USA.
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16
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Calaf GM, Urzua U, Termini L, Aguayo F. Oxidative stress in female cancers. Oncotarget 2018; 9:23824-23842. [PMID: 29805775 PMCID: PMC5955122 DOI: 10.18632/oncotarget.25323] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Accepted: 04/06/2018] [Indexed: 12/16/2022] Open
Abstract
Breast, cervical and ovarian cancers are highly prevalent in women worldwide. Environmental, hormonal and viral-related factors are especially relevant in the development of these tumors. These factors are strongly related to oxidative stress (OS) through the generation of reactive oxygen species (ROS). The OS is caused by an imbalance in the redox status of the organism and is literally defined as "an imbalance between ROS generation and its detoxification by biological system leading to impairment of damage repair by cell/tissue". The multistep progression of cancer suggests that OS is involved in cancer initiation, promotion and progression. In this review, we described the role of OS and the interplay with environmental, host and viral factors related to breast, cervical and ovarian cancers initiation, promotion and progression. In addition, the role of the natural antioxidant compound curcumin and other compounds for breast, cervical and ovarian cancers prevention/treatment is discussed.
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Affiliation(s)
- Gloria M. Calaf
- Instituto de Alta Investigación (IAI), Universidad de Tarapacá, Arica, Chile
- Center for Radiological Research, Columbia University Medical Center, New York, NY, USA
| | - Ulises Urzua
- Departamento de Oncología Básico Clínica, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Lara Termini
- Instituto do Câncer do Estado de São Paulo, Centro de Investigação Translacional em Oncologia, Laboratório de Oncologia Experimental, São Paulo, SP, Brazil
| | - Francisco Aguayo
- Departamento de Oncología Básico Clínica, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Advanced Center for Chronic Diseases (ACCDiS), Universidad de Chile, Santiago, Chile
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17
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Estrogen and DPP4 inhibitor, but not metformin, exert cardioprotection via attenuating cardiac mitochondrial dysfunction in obese insulin-resistant and estrogen-deprived female rats. Menopause 2018; 23:894-902. [PMID: 27326818 DOI: 10.1097/gme.0000000000000640] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE Cardiac function was markedly compromised in obese insulin-resistant and estrogen-deprived rats. Metformin and dipeptidyl peptidase-4 inhibitor (vildagliptin) were reported to improve cardiac function in insulin-resistant rats. Their effects on the heart under estrogen-deprived conditions are, however, unknown. Therefore, the effects of metformin, vildagliptin, and estrogen on the cardiac function in estrogen-deprived insulin-resistant female rats were investigated. METHODS Bilateral ovariectomized female rats (n = 48) were divided to be fed with either a normal diet (ND) or a high-fat diet (HFD) for 12 weeks. Then, both ND- and HFD-fed groups were subdivided to receive a vehicle, estrogen (50 μg/kg), metformin (30 mg/kg), or vildagliptin (3 mg/kg) for 4 weeks (n = 6/group). Heart rate variability, echocardiography, metabolic and biochemical parameters, cardiac function, and mitochondrial function were determined. Sham-operated female rats (n = 6) were used as a control. RESULTS Both ND- and HFD-fed ovariectomized rats developed insulin resistance, depressed heart rate variability, and decreased cardiac contractility. Although treatment with metformin, vildagliptin, and estrogen improved metabolic status and cardiac function, only estrogen and vildagliptin improved diastolic blood pressure and left ventricular ±dP/dt, and also reduced mitochondrial impairment, apoptosis, and oxidative stress in HD-fed ovariectomized rats. CONCLUSIONS Treatment with estrogen and vildagliptin provided more beneficial effects in the inhibition of oxidative stress, apoptosis, and cardiac mitochondrial dysfunction, and preserved cardiac contractile performance in estrogen-deprived insulin-resistant female rats.
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18
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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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19
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Li G, Xing X, Luo Y, Deng X, Lu S, Tang S, Sun G, Sun X. Notoginsenoside R1 prevents H9c2 cardiomyocytes apoptosis against hypoxia/reoxygenation via the ERs/PI3K/Akt pathway. RSC Adv 2018; 8:13871-13878. [PMID: 35539324 PMCID: PMC9079795 DOI: 10.1039/c8ra02554a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 03/29/2018] [Indexed: 12/26/2022] Open
Abstract
Notoginsenoside R1 (NGR1) is separate from Panax notoginsenosides (PNS), and plays a role similar to phytoestrogen in preventing and treating cardiovascular diseases. However, the protective mechanism of NGR1 in the myocardial ischemia/reperfusion injury via the estrogen receptor (ER) pathway remains unclear, which hinder its application. This study aimed to study the preventive mechanisms of NGR1 in the apoptosis of H9c2 cardiomyocytes after hypoxia/reoxygenation (H/R). NGR1 did not affect the expression of ERα and ERβ proteins in normal H9c2 cardiomyocytes. However, NGR1 could upregulate the ERα and G protein-coupled receptor 30 (GPR30) proteins in H9c2 cardiomyocytes after H/R without affecting ERβ levels. Moreover, it significantly affected the expression levels of PI3K and its downstream apoptosis proteins such as Bcl-2 Associated X Protein (Bax), B cell lymphoma/lewkmia-2 (Bcl-2), caspase-3, and so forth. Whereas, after adding the PI3K protein antagonist, the modulatory expression levels of PI3K and its downstream apoptosis proteins were remarkably abolished. After adding ERα and GPR30 antagonists, NGR1 had no significant effect on the expression of PI3K and its downstream Akt protein in the model group. The data of flow cytometry showed that after adding the ERα, GPR30 and PI3K antagonists, the apoptotic rate of cardiomyocytes had no significant changes compared with the model group. This study demonstrated that NGR1 protected H9c2 cardiomyocytes from the injury after H/R by affecting ERα and GPR30 to regulate the expression levels of PI3K and its downstream apoptosis proteins. Notoginsenoside R1 (NGR1) is separate from Panax notoginsenosides (PNS), and plays a role similar to phytoestrogen in preventing and treating cardiovascular diseases.![]()
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Affiliation(s)
- Guang Li
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Yunnan Branch
| | - Xiaoyan Xing
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
| | - Yun Luo
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
| | - Xuehong Deng
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
| | - Shan Lu
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
| | - Shimin Tang
- Changchun University of Chinese Medicine
- Changchun
- China
| | - Guibo Sun
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
| | - Xiaobo Sun
- The Institute of Medicinal Plant Development
- Chinese Academy of Medical Sciences
- Beijing 100093
- China
- Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine
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20
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Ebrahimi F. S, Hemmati M, Malekaneh M. Effects of the date palm fruit (Phoenix dactylifera L.) on prolactin, IGF-1, and stress factors in lactating female rats and its impact on their litters’ development. MEDITERRANEAN JOURNAL OF NUTRITION AND METABOLISM 2017. [DOI: 10.3233/mnm-17164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Saeed Ebrahimi F.
- Student Research Committee, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mina Hemmati
- Birjand Cardiovascular Disease Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Malekaneh
- Department of Biochemistry, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
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21
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Falfushynska HI, Gnatyshyna LL, Horyn O, Stoliar OB. Vulnerability of marsh frog Pelophylax ridibundus to the typical wastewater effluents ibuprofen, triclosan and estrone, detected by multi-biomarker approach. Comp Biochem Physiol C Toxicol Pharmacol 2017; 202:26-38. [PMID: 28757214 DOI: 10.1016/j.cbpc.2017.07.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Revised: 07/23/2017] [Accepted: 07/25/2017] [Indexed: 11/24/2022]
Abstract
Pharmaceutical and personal care products (PPCPs) are the environmental pollutants of growing concern. The aim of this study was to indicate the effects of typical PPCPs on the marsh frog Pelophylax ridibundus. We treated male frogs with waterborne ibuprofen (IBU, 250ng·L-1), triclosan (TCS, 500ng·L-1), or estrone (E1, 100ng·L-1) for 14days. Common vulnerability of the frogs was detected from dramatic decrease of Zn, total and metalated metallothionein (MT) concentrations, Zn/Cu ratio, the elevation of activity of glutathione-S-transferase, cathepsin D and DNA instability in the liver, the depletion of cholinesterase in the brain and cortisol in the blood plasma in all exposures. Nevertheless, lipofuscin concentration in the liver was always decreased. The groups were best distinguished by cytochrome P450 (CYP450) activity determined by ELISA. The exposure to IBU caused lesser damage, but elevated the levels of oxyradicals and glutathione (GSH and GSSG) and lysosomal membrane instability. Exposures to TCS and E1 provoked the endocrine disturbance (increased levels of vitellogenin and thyrotropin in blood plasma), decreased lactate dehydrogenase activity and increased level of pyruvate in the liver. TCS caused the increase of GSSG by 7.3 times and lactate levels. Only E1 lead to decrease of deiodinase activity in the liver, activation of CYP450 and caspase-3 and efflux of cathepsin D from lysosomes. Spectrophotometric and ELISA assays of MTs and CYP450 gave distinct results in E1-group. Broad disruption of the hormonal pathways caused by E1 could be of concern for the health status of frogs in their habitats.
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Affiliation(s)
- Halina I Falfushynska
- Research Laboratory of Comparative Biochemistry and Molecular Biology, Ternopil National Pedagogical University, 2, M. Kryvonosa Str., Ternopil 46027, Ukraine
| | - Lesya L Gnatyshyna
- Research Laboratory of Comparative Biochemistry and Molecular Biology, Ternopil National Pedagogical University, 2, M. Kryvonosa Str., Ternopil 46027, Ukraine; I.Ya. Horbachevsky Ternopil State Medical University, 1, Maidan Voli, Ternopil 46001, Ukraine
| | - Oksana Horyn
- I.Ya. Horbachevsky Ternopil State Medical University, 1, Maidan Voli, Ternopil 46001, Ukraine
| | - Oksana B Stoliar
- Research Laboratory of Comparative Biochemistry and Molecular Biology, Ternopil National Pedagogical University, 2, M. Kryvonosa Str., Ternopil 46027, Ukraine.
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Asokan Shibu M, Kuo WW, Kuo CH, Day CH, Shen CY, Chung LC, Lai CH, Pan LF, Vijaya Padma V, Huang CY. Potential phytoestrogen alternatives exert cardio-protective mechanisms via estrogen receptors. Biomedicine (Taipei) 2017; 7:11. [PMID: 28612709 PMCID: PMC5479424 DOI: 10.1051/bmdcn/2017070204] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 02/10/2017] [Indexed: 12/19/2022] Open
Abstract
The 17 beta-estradiol (E2) is a sex hormone that is most abundant and most active estrogen in premenopausal women. The importance of E2 in providing cardioprotection and reducing the occurrence of heart disease in women of reproductive age has been well recognized. There are three subtype of estrogen receptors (ERs), including ERα, ERβ and GPR30 have been identified and accumulating evidence reveal their roles on E2-mediated genomic and nongenomic pathway in cardiomyocytes against various cardiac insults. In this review, we focus on the estrogen and ERs mediated signaling pathways in cardiomyocytes that determines cardio-protection against various stresses and further discuss the clinical implication of ERs and phytoestrogens. Further we provide some insights on phytoeostrogens which may play as alternatives in estrogen replacement therapies.
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Affiliation(s)
| | - Wei-Wen Kuo
- Department of Biological Science and Technology, China Medical University, Taichung 404, Taiwan
| | - Chia-Hua Kuo
- Laboratory of Exercise Biochemistry, Department of Sports Sciences, University of Taipei, Taipei 100, Taiwan
| | | | - Chia-Yao Shen
- Department of Nursing, Meiho University, Pingtung 912,Taiwan
| | - Li-Chin Chung
- Department of Hospital and Health Care Administration, Chia Nan University of Pharmacy & Science, Tainan 717, Taiwan
| | - Chao-Hung Lai
- Division of Cardiology, Department of Internal Medicine, Armed-Force, Taichung General Hospital, Taichung 411, Taiwan
| | - Lung-Fa Pan
- Division of Cardiology, Department of Internal Medicine, Armed-Force, Taichung General Hospital, Taichung 411, Taiwan
| | - V Vijaya Padma
- Department of Biotechnology, Bharathiyar University, Coimbatore, Tamil Nadu 641046, India
| | - Chih-Yang Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung 404, Taiwan - School of Chinese Medicine, China Medical University, Taichung 404, Taiwan - Department of Health and Nutrition Biotechnology, Asia University, Taichung 413, Taiwan
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17β-Estradiol enhances sulforaphane cardioprotection against oxidative stress. J Nutr Biochem 2017; 42:26-36. [DOI: 10.1016/j.jnutbio.2016.12.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 12/06/2016] [Accepted: 12/28/2016] [Indexed: 11/19/2022]
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Fakoya AOJ. New Delivery Systems of Stem Cells for Vascular Regeneration in Ischemia. Front Cardiovasc Med 2017; 4:7. [PMID: 28286751 PMCID: PMC5323391 DOI: 10.3389/fcvm.2017.00007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 02/07/2017] [Indexed: 01/08/2023] Open
Abstract
The finances of patients and countries are increasingly overwhelmed with the plague of cardiovascular diseases as a result of having to chronically manage the associated complications of ischemia such as heart failures, neurological deficits, chronic limb ulcers, gangrenes, and amputations. Hence, scientific research has sought for alternate therapies since pharmacological and surgical treatments have fallen below expectations in providing the desired quality of life. The advent of stem cells research has raised expectations with respect to vascular regeneration and tissue remodeling, hence assuring the patients of the possibility of an improved quality of life. However, these supposed encouraging results have been short-lived as the retention, survival, and engraftment rates of these cells appear to be inadequate; hence, the long-term beneficial effects of these cells cannot be ascertained. These drawbacks have led to the relentless research into better ways to deliver stem cells or angiogenic factors (which mobilize stem cells) to the regions of interest to facilitate increased retention, survival, engraftment, and regeneration. This review considered methods, such as the use of scaffolds, retrograde coronary delivery, improved combinations, stem cell pretreatment, preconditioning, stem cell exosomes, mannitol, magnet, and ultrasound-enhanced delivery, homing techniques, and stem cell modulation. Furthermore, the study appraised the possibility of a combination therapy of stem cells and macrophages, considering the enormous role macrophages play in repair, remodeling, and angiogenesis.
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Yao F, Abdel-Rahman AA. Estrogen Receptors α and β Play Major Roles in Ethanol-Evoked Myocardial Oxidative Stress and Dysfunction in Conscious Ovariectomized Rats. Alcohol Clin Exp Res 2016; 41:279-290. [PMID: 28032633 DOI: 10.1111/acer.13290] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Accepted: 11/10/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND We documented the dependence of ethanol (EtOH)-evoked myocardial dysfunction on estrogen (E2 ), and our recent estrogen receptor (ER) blockade study, in proestrus rats, implicated ERα signaling in this phenomenon. However, a limitation of selective pharmacological loss-of-function approach is the potential contribution of the other 2 ERs to the observed effects because crosstalk exists between the 3 ERs. Here, we adopted a "regain"-of-function approach (using selective ER subtype agonists) to identify the ER subtype(s) required for unraveling the E2 -dependent myocardial oxidative stress/dysfunction caused by EtOH in conscious ovariectomized (OVX) rats. METHODS OVX rats received a selective ERα (PPT), ERβ (DPN), or GPER (G1) agonist (10 μg/kg; i.v.) or vehicle 30 minutes before EtOH (1.0 g/kg; infused i.v. over 30 minutes) or saline, and the hemodynamic recording continued for additional 60 minutes. Thereafter, left ventricular tissue was collected for conducting ex vivo molecular/biochemical studies. RESULTS EtOH had no hemodynamic effects in OVX rats, but reduced the left ventricular contractility index, dP/dtmax , and MAP after acute ERα (PPT) or ERβ (DPN) activation. These responses were associated with increases in the phosphorylation of ERK1/2 and eNOS, and in reactive oxygen species (ROS) and malondialdehyde (MDA) levels in the myocardium. GPER activation (G1) only unraveled a modest EtOH-evoked hypotension and elevation in myocardial ROS. PPT enhanced catalase, DPN reduced ALDH2, while G1 had no effect on the activity of either enzyme, and none of the agonists influenced alcohol dehydrogenase or CYP2E1 activities in the myocardium. Blood EtOH concentration (96.0 mg/dl) was significantly reduced following ERα (59.8 mg/dl) or ERβ (62.9 mg/dl), but not GPER (100.3 mg/dl), activation in EtOH-treated OVX rats. CONCLUSIONS ERα and ERβ play major roles in the E2 -dependent myocardial dysfunction caused by EtOH by promoting combined accumulation of cardiotoxic (ROS and MDA) and cardiodepressant (NOS-derived NO) molecules in female myocardium.
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Affiliation(s)
- Fanrong Yao
- Department of Pharmacology & Toxicology (FY, AAA-R), Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Abdel A Abdel-Rahman
- Department of Pharmacology & Toxicology (FY, AAA-R), Brody School of Medicine, East Carolina University, Greenville, North Carolina
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Singla RD, Wang J, Singla DK. Fibroblast growth factor-8 inhibits oxidative stress-induced apoptosis in H9c2 cells. Mol Cell Biochem 2016; 425:77-84. [DOI: 10.1007/s11010-016-2863-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 10/22/2016] [Indexed: 10/20/2022]
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Lee JH, Lee SH, Choi SH, Asahara T, Kwon SM. The sulfated polysaccharide fucoidan rescues senescence of endothelial colony-forming cells for ischemic repair. Stem Cells 2016; 33:1939-51. [PMID: 25693733 DOI: 10.1002/stem.1973] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 01/15/2015] [Indexed: 01/08/2023]
Abstract
The efficacy of cell therapy using endothelial colony-forming cells (ECFCs) in the treatment of ischemia is limited by the replicative senescence of isolated ECFCs in vitro. Such senescence must therefore be overcome in order for such cell therapies to be clinically applicable. This study aimed to investigate the potential of sulfated polysaccharide fucoidan to rescue ECFCs from cellular senescence and to improve in vivo vascular repair by ECFCs. Fucoidan-preconditioning of senescent ECFCs was shown by flow cytometry to restore the expression of functional ECFC surface markers (CD34, c-Kit, VEGFR2, and CXCR4) and stimulate the in vitro tube formation capacity of ECFCs. Fucoidan also promoted the expression of cell cycle-associated proteins (cyclin E, Cdk2, cyclin D1, and Cdk4) in senescent ECFCs, significantly reversed cellular senescence, and increased the proliferation of ECFCs via the FAK, Akt, and ERK signaling pathways. Fucoidan was found to enhance the survival, proliferation, incorporation, and endothelial differentiation of senescent ECFCs transplanted in ischemic tissues in a murine hind limb ischemia model. Moreover, ECFC-induced functional recovery and limb salvage were markedly improved by fucoidan pretreatment of ECFCs. To our knowledge, the findings of our study are the first to demonstrate that fucoidan enhances the neovasculogenic potential of ECFCs by rescuing them from replicative cellular senescence. Pretreatment of ECFCs with fucoidan may thus provide a novel strategy for the application of senescent stem cells to therapeutic neovascularization.
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Affiliation(s)
- Jun Hee Lee
- Laboratory for Vascular Medicine and Stem Cell Biology, Department of Physiology, Medical Research Institute, School of Medicine, Pusan National University, Yangsan, Korea
| | - Sang Hun Lee
- Soonchunhyang Medical Science Research Institute, Soonchunhyang University Seoul Hospital, Yongsan-gu, Seoul, Korea.,Department of Biochemistry, School of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Sung Hyun Choi
- Laboratory for Vascular Medicine and Stem Cell Biology, Department of Physiology, Medical Research Institute, School of Medicine, Pusan National University, Yangsan, Korea
| | - Takayuki Asahara
- Department Regenerative Medicine Science, Tokai University School of Medicine, Isehara, Kanagawa, Japan
| | - Sang-Mo Kwon
- Laboratory for Vascular Medicine and Stem Cell Biology, Department of Physiology, Medical Research Institute, School of Medicine, Pusan National University, Yangsan, Korea
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Yoshioka J. Thioredoxin superfamily and its effects on cardiac physiology and pathology. Compr Physiol 2016; 5:513-30. [PMID: 25880503 DOI: 10.1002/cphy.c140042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A precise control of oxidation/reduction of protein thiols is essential for intact cardiac physiology. Irreversible oxidative modifications have been proposed to play a role in the pathogenesis of cardiovascular diseases. An imbalance of redox homeostasis with diminution of antioxidant capacities predisposes the heart to oxidant injury. There is growing interest in endoplasmic reticulum (ER) stress in the cardiovascular field, since perturbation of redox homeostasis in the ER is sufficient to cause ER stress. Because a number of human diseases are related to altered redox homeostasis and defects in protein folding, many research efforts have been devoted in recent years to understanding the structure and enzymatic properties of the thioredoxin superfamily. The thioredoxin superfamily has been well documented as thiol oxidoreductases to exert a role in various cell signaling pathways. The redox properties of the thioredoxin motif account for the different functions of several members of the thioredoxin superfamily. While thioredoxin and glutaredoxin primarily act as antioxidants by reducing protein disulfides and mixed disulfide, another member of the superfamily, protein disulfide isomerase (PDI), can act as an oxidant by forming intrachain disulfide bonds that contribute to proper protein folding. Increasing evidence suggests a pivotal role of PDI in the survival pathway that promotes cardiomyocyte survival and leads to more favorable cardiac remodeling. Thus, the thiol redox state is important for cellular redox signaling and survival pathway in the heart. This review summarizes the key features of major members of the thioredoxin superfamily directly involved in cardiac physiology and pathology.
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Affiliation(s)
- Jun Yoshioka
- Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Cambridge, Massachusetts, USA
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Nepomuceno AI, Muddiman DC, Petitte JN. Global Proteomic Analysis of Functional Compartments in Immature Avian Follicles Using Laser Microdissection Coupled to LC-MS/MS. J Proteome Res 2015. [PMID: 26211554 DOI: 10.1021/acs.jproteome.5b00346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Laser microdissection (LMD) was utilized for the separation of the yolk, follicular wall (granulosa and theca), and surrounding stromal cells of small white follicles (SWF) obtained from reproductively active domestic fowl. Herein, we provide an in situ proteomics-based approach to studying follicular development through the use of LMD and mass spectrometry. This study resulted in a total of 2889 proteins identified from the three specific isolated compartments. White yolk from the smallest avian follicles resulted in the identification of 1984 proteins, while isolated follicular wall and ovarian stroma yielded 2470 and 2456 proteins, respectively. GO annotations highlighted the functional differences between the compartments. Among the three compartments examined, the relative abundance of vitellogenins, steroidogenic enzymes, anti-Mullerian hormone, transcription factors, and proteins involved in retinoic acid receptors/retinoic acid synthesis, transcription factors, and cell surface receptors such as EGFR and their associated signaling pathways reflected known cellular function of the ovary. This study has provided a global proteome for SWF, white yolk, and ovarian stroma of the avian ovary that can be used as a baseline for future studies and verifies that the coupling of LMD with proteomic analysis can be used to evaluate proteins from small, physiologically functional compartments of complex tissue.
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Affiliation(s)
- Angelito I Nepomuceno
- W.M. Keck Fourier Transform Mass Spectrometry Laboratory, Department of Chemistry, and ‡Prestage Department of Poultry Science, North Carolina State University , Raleigh, North Carolina 27695, United States
| | - David C Muddiman
- W.M. Keck Fourier Transform Mass Spectrometry Laboratory, Department of Chemistry, and ‡Prestage Department of Poultry Science, North Carolina State University , Raleigh, North Carolina 27695, United States
| | - James N Petitte
- W.M. Keck Fourier Transform Mass Spectrometry Laboratory, Department of Chemistry, and ‡Prestage Department of Poultry Science, North Carolina State University , Raleigh, North Carolina 27695, United States
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Pons DG, Torrens-Mas M, Nadal-Serrano M, Sastre-Serra J, Roca P, Oliver J. The presence of Estrogen Receptor β modulates the response of breast cancer cells to therapeutic agents. Int J Biochem Cell Biol 2015; 66:85-94. [PMID: 26232188 DOI: 10.1016/j.biocel.2015.07.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/30/2015] [Accepted: 07/25/2015] [Indexed: 02/07/2023]
Abstract
Breast cancer is a leading cause of death for women. The estrogen receptors (ERs) ratio is important in the maintenance of mitochondrial redox status, and higher levels of ERβ increases mitochondrial functionality, decreasing ROS production. Our aim was to determine the interaction between the ERα/ERβ ratio and the response to cytotoxic treatments such as cisplatin (CDDP), paclitaxel (PTX) and tamoxifen (TAM). Cell viability, apoptosis, autophagy, ROS production, mitochondrial membrane potential, mitochondrial mass and mitochondrial functionality were analyzed in MCF-7 (high ERα/ERβ ratio) and T47D (low ERα/ERβ ratio) breast cancer cell lines. Cell viability decreased more in MCF-7 when treated with CDDP and PTX. Apoptosis was less activated after cytotoxic treatments in T47D than in MCF-7 cells. Nevertheless, autophagy was increased more in CDDP-treated MCF-7, but less in TAM-treated cells than in T47D. CDDP treatment produced a raise in mitochondrial mass in MCF-7, as well as the citochrome c oxidase (COX) and ATP synthase protein levels, however significantly reduced COX activity. In CDDP-treated cells, the overexpression of ERβ in MCF-7 caused a reduction in apoptosis, autophagy and ROS production, leading to higher cell survival; and the silencing of ERβ in T47D cells promoted the opposite effects. In TAM-treated cells, ERβ-overexpression led to less cell viability by an increment in autophagy; and the partial knockdown of ERβ in T47D triggered an increase in ROS production and apoptosis, leading to cell death. In conclusion, ERβ expression plays an important role in the response of cancer cells to cytotoxic agents, especially for cisplatin treatment.
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Affiliation(s)
- Daniel Gabriel Pons
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain
| | - Margalida Torrens-Mas
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain
| | - Mercedes Nadal-Serrano
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain
| | - Jorge Sastre-Serra
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain
| | - Pilar Roca
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain.
| | - Jordi Oliver
- Grupo multidisciplinar de Oncología Traslacional, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS-IdISPa), Universitat de les Illes Balears, E07122 Palma de Mallorca, Illes Balears, Spain; Ciber Fisiopatología Obesidad y Nutrición (CB06/03), Instituto de Salud Carlos III, Spain
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Wang L, Tang ZP, Zhao W, Cong BH, Lu JQ, Tang XL, Li XH, Zhu XY, Ni X. MiR-22/Sp-1 Links Estrogens With the Up-Regulation of Cystathionine γ-Lyase in Myocardium, Which Contributes to Estrogenic Cardioprotection Against Oxidative Stress. Endocrinology 2015; 156:2124-37. [PMID: 25825815 DOI: 10.1210/en.2014-1362] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Hydrogen sulfide, generated in the myocardium predominantly via cystathionine-γ-lyase (CSE), is cardioprotective. Our previous study has shown that estrogens enhance CSE expression in myocardium of female rats. The present study aims to explore the mechanisms by which estrogens regulate CSE expression, in particular to clarify the role of estrogen receptor subtypes and the transcriptional factor responsible for the estrogenic effects. We found that either the CSE inhibitor or the CSE small interfering RNA attenuated the protective effect of 17β-estradiol (E2) against H2O2- and hypoxia/reoxygenation-induced injury in primary cultured neonatal cardiomyocytes. E2 stimulates CSE expression via estrogen receptor (ER)-α both in cultured cardiomyocytes in vitro and in the myocardium of female mice in vivo. A specificity protein-1 (Sp-1) consensus site was identified in the rat CSE promoter and was found to mediate the E2-induced CSE expression. E2 increases ERα and Sp-1 and inhibits microRNA (miR)-22 expression in myocardium of ovariectomized rats. In primary cardiomyocytes, E2 stimulates Sp-1 expression through the ERα-mediated down-regulation of miR-22. It was confirmed that both ERα and Sp-1 were targeted by miR-22. In the myocardium of ovariectomized rats, the level of miR-22 inversely correlated to CSE, ERα, Sp-1, and antioxidant biomarkers and positively correlated to oxidative biomarkers. In summary, this study demonstrates that estrogens stimulate Sp-1 through the ERα-mediated down-regulation of miR-22 in cardiomyocytes, leading to the up-regulation of CSE, which in turn results in an increase of antioxidative defense. Interaction of ERα, miR-22, and Sp-1 may play a critical role in the control of oxidative stress status in the myocardium of female rats.
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Affiliation(s)
- Long Wang
- Department of Physiology and The Key Laboratory of Molecular Neurobiology of the Ministry of Education (L.W., W.Z., B.-H.C., X.-L.T., X.-H.L., X.-Y.Z., X.N.), Second Military Medical University, and School of Kinesiology (Z.-P.T., J.-Q.L.), Key laboratory of Exercise and Health Science of the Ministry of Education, Shanghai University of Sport, Shanghai 200433, China
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Wang YC, Xiao XL, Li N, Yang D, Xing Y, Huo R, Liu MY, Zhang YQ, Dong DL. Oestrogen inhibits BMP4-induced BMP4 expression in cardiomyocytes: a potential mechanism of oestrogen-mediated protection against cardiac hypertrophy. Br J Pharmacol 2015; 172:5586-95. [PMID: 25323043 DOI: 10.1111/bph.12983] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 09/17/2014] [Accepted: 10/06/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE Oestrogen inhibits cardiac hypertrophy and bone morphogenetic protein-4 (BMP4) induces cardiac hypertrophy. Here we have studied the inhibition by oestrogen of BMP4 expression in cardiomyocytes. EXPERIMENTAL APPROACH Cultures of neonatal rat cardiomyocytes were used in in vitro experiments. Bilatαl ovariectomy (OVX) was carried out in female Kunming mice and cardiac hypertrophy was induced by transverse aortic constriction (TAC). KEY RESULTS Oestrogen inhibited BMP4-induced cardiomyocyte hypertrophy and BMP4 expression in vitro. The inhibition of BMP4-induced BMP4 protein expression by oestrogen was prevented by the inhibitor of oestrogen receptor-β, PHTPP, but not by the inhibitor of oestrogen receptor-α MPP. BMP4 induced smad1/5/8 activation, which was not affected by oestrogen in cardiomyocytes. BMP4 induced JNK but not ERK1/2 and p38 activation, and activated JNK was inhibited by oestrogen. Treatment with the p38 inhibitor SB203580 or the JNK inhibitor SP600125 inhibited BMP4-induced BMP4 expression in cardiomyocytes, but the ERK1/2 inhibitor U0126 increased BMP4-induced BMP4 expression, indicating that JNK, ERK1/2 and p38 MAPKs were all involved, although only JNK activation contributed to the inhibition of BMP4-induced BMP4 expression by oestrogen. TAC induced significant heart hypertrophy in OVX mice in vivo and oestrogen replacement inhibited TAC-induced heart hypertrophy in OVX mice. In parallel with the data of heart hypertrophy, oestrogen replacement significantly reduced the increased BMP4 protein expression in TAC-treated OVX mice. CONCLUSIONS AND IMPLICATIONS Oestrogen treatment inhibited BMP4-induced BMP4 expression in cardiomyocytes through stimulating oestrogen receptor-β and inhibiting JNK activation. Our results provide a novel mechanism underlying oestrogen-mediated protection against cardiac hypertrophy.
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Affiliation(s)
- Yu-Chun Wang
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Xiao-Lin Xiao
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Na Li
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Di Yang
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Yue Xing
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Rong Huo
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Ming-Yu Liu
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Yan-Qiu Zhang
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - De-Li Dong
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
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Ahmad F, Nidadavolu P, Durgadoss L, Ravindranath V. Critical cysteines in Akt1 regulate its activity and proteasomal degradation: implications for neurodegenerative diseases. Free Radic Biol Med 2014; 74:118-28. [PMID: 24933620 DOI: 10.1016/j.freeradbiomed.2014.06.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 06/05/2014] [Accepted: 06/06/2014] [Indexed: 12/25/2022]
Abstract
Impaired Akt1 signaling is observed in neurodegenerative diseases, including Parkinson׳s disease (PD). In PD models oxidative modification of Akt1 leads to its dephosphorylation and consequent loss of its kinase activity. To explore the underlying mechanism we exposed Neuro2A cells to cadmium, a pan inhibitor of protein thiol disulfide oxidoreductases, including glutaredoxin 1 (Grx1), or downregulated Grx1, which led to dephosphorylation of Akt1, loss of its kinase activity, and also decreased Akt1 protein levels. Mutation of cysteines to serines at 296 and 310 in Akt1 did not affect its basal kinase activity but abolished cadmium- and Grx1 downregulation-induced reduction in Akt1 kinase activity, indicating their critical role in redox modulation of Akt1 function and turnover. Cadmium-induced decrease in phosphorylated Akt1 correlated with increased association of wild-type (WT) Akt1 with PP2A, which was absent in the C296-310S Akt1 mutant and was also abolished by N-acetylcysteine treatment. Further, increased proteasomal degradation of Akt1 by cadmium was not seen in the C296-310S Akt1 mutant, indicating that oxidation of cysteine residues facilitates degradation of WT Akt1. Moreover, preventing oxidative modification of Akt1 cysteines 296 and 310 by mutating them to serines increased the cell survival effects of Akt1. Thus, in neurodegenerative states such as PD, maintaining the thiol status of cysteines 296 and 310 in Akt1 would be critical for Akt1 kinase activity and for preventing its degradation by proteasomes. Preventing downregulation of Akt signaling not only has long-range consequences for cell survival but could also affect the multiple roles that Akt plays, including in the Akt-mTOR signaling cascade.
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Affiliation(s)
- Faraz Ahmad
- Centre for Neuroscience, Indian Institute of Science, Bangalore 560012, India
| | - Prakash Nidadavolu
- Centre for Neuroscience, Indian Institute of Science, Bangalore 560012, India
| | - Lalitha Durgadoss
- Centre for Neuroscience, Indian Institute of Science, Bangalore 560012, India
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Knowlton AA, Korzick DH. Estrogen and the female heart. Mol Cell Endocrinol 2014; 389:31-9. [PMID: 24462775 PMCID: PMC5709037 DOI: 10.1016/j.mce.2014.01.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 01/04/2014] [Accepted: 01/05/2014] [Indexed: 12/24/2022]
Abstract
Estrogen has a plethora of effects in the cardiovascular system. Studies of estrogen and the heart span human clinical trials and basic cell and molecular investigations. Greater understanding of cell and molecular responses to estrogens can provide further insights into the findings of clinical studies. Differences in expression and cellular/intracellular distribution of the two main receptors, estrogen receptor (ER) α and β, are thought to account for the specificity and differences in responses to estrogen. Much remains to be learned in this area, but cellular distribution within the cardiovascular system is becoming clearer. Identification of GPER as a third ER has introduced further complexity to the system. 17β-estradiol (E2), the most potent human estrogen, clearly has protective properties activating a signaling cascade leading to cellular protection and also influencing expression of the protective heat shock proteins (HSP). E2 protects the heart from ischemic injury in basic studies, but the picture is more involved in the whole organism and clinical studies. Here the complexity of E2's widespread effects comes into play and makes interpretation of findings more challenging. Estrogen loss occurs primarily with aging, but few studies have used aged models despite clear evidence of differences between the response to estrogen deficiency in adult and aged animals. Thus more work is needed focusing on the effects of aging vs. estrogen loss on the cardiovascular system.
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Affiliation(s)
- A A Knowlton
- The Department of Veteran's Affairs, Northern California VA, Sacramento, CA, USA; Molecular & Cellular Cardiology, Departments of Medicine and Pharmacology, University of California, Davis, USA.
| | - D H Korzick
- Intercollege Program in Physiology and Department of Kinesiology, The Pennsylvania State University, University Park, PA, USA
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Zhu X, Tang Z, Cong B, Du J, Wang C, Wang L, Ni X, Lu J. Estrogens increase cystathionine-γ-lyase expression and decrease inflammation and oxidative stress in the myocardium of ovariectomized rats. Menopause 2014; 20:1084-91. [PMID: 23571523 DOI: 10.1097/gme.0b013e3182874732] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Hydrogen sulfide (H2S), generated in the myocardium predominantly via cystathionine-γ-lyase (CSE), is cardioprotective. The objectives of the present study were to investigate the effects of estrogens on CSE expression and H2S generation in the myocardium and to examine whether serum 17β-estradiol (E2) level is associated with CSE activity and H2S generation and whether H2S or E2 level is associated with proinflammatory cytokines and oxidative stress status. METHODS Ovariectomized Sprague-Dawley rats received subcutaneous E2 (30 μg/kg/d) or vehicle for 12 weeks. At the end of the 12-week treatment, CSE expression, H2S generation, reduced glutathione/oxidized glutathione (GSH/GSSG) ratio, total antioxidant capacity (T-AOC), superoxide dismutase (SOD) activity, catalase (CAT) activity, interleukin (IL)-6 concentration, and tumor necrosis factor-α (TNF-α) concentration in the left ventricle were determined. RESULTS E2 increased CSE expression and H2S generation in the myocardium of ovariectomized rats. H2S production rate and serum E2 were positively correlated. E2 increased GSH/GSSG ratio, T-AOC, CAT, and SOD activity but decreased IL-6 and TNF-α levels. Serum E2 level was positively correlated with GSH/GSSG ratio, T-AOC, CAT, and SOD activity, and inversely correlated with IL-6 and TNF-α levels. H2S generation rate was positively correlated with T-AOC and GSH/GSSG ratio, and inversely correlated with IL-6 and TNF-α levels. CONCLUSIONS E2 increases CSE expression and endogenous H2S generation in the myocardium. The effects of E2 are associated with decreased oxidative stress and inflammatory status. Our data suggest that estrogens might exert cardioprotective effects through up-regulation of CSE expression and H2S generation.
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Affiliation(s)
- Xiaoyan Zhu
- From the 1Department of Physiology, Second Military Medical University, Shanghai, China; and 2School of Kinesiology, Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China
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Dworatzek E, Mahmoodzadeh S, Schubert C, Westphal C, Leber J, Kusch A, Kararigas G, Fliegner D, Moulin M, Ventura-Clapier R, Gustafsson JA, Davidson MM, Dragun D, Regitz-Zagrosek V. Sex differences in exercise-induced physiological myocardial hypertrophy are modulated by oestrogen receptor beta. Cardiovasc Res 2014; 102:418-28. [DOI: 10.1093/cvr/cvu065] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Chaudhari HN, Kim SW, Yun JW. Gender-dimorphic regulation of antioxidant proteins in response to high-fat diet and sex steroid hormones in rats. Free Radic Res 2014; 48:587-98. [DOI: 10.3109/10715762.2014.896003] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Chalfant M, Bernd KK. 17β-Estradiol alters rat type-II alveolar cell recovery from high levels of ozone. PLoS One 2014; 9:e90530. [PMID: 24599035 PMCID: PMC3944009 DOI: 10.1371/journal.pone.0090530] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2013] [Accepted: 02/01/2014] [Indexed: 12/12/2022] Open
Abstract
Respiratory health is negatively impacted by exposure to ozone or to estrogens. Increasingly, individuals have simultaneous environmental exposure to both compounds. Characterizing the cellular responses stimulated by the combination of ozone and estrogens, therefore, is crucial to our complete understanding of the compounds' environmental health impacts. Our work introduces an alveolar cell culture model with defined media that provides evidence of ozone damage and determines sex hormones alter the cells' susceptibility to oxidative damage. Specifically, we investigated the individual and combined effects of environmentally relevant levels of ozone and 17β-estradiol on non-cancerous rat, type-II alveolar cells by examining biomarkers of cellular health and redox balance. The data reveal a complex role for 17β-estradiol in cellular recovery from 1 hr exposure to high ozone levels. At 0.5 hr post-ozone necrosis and inflammation markers show 17β-estradiol augments the detrimental effects of 350 ppb ozone, but after 24 hr of recovery, steroid treatment alters glutathione redox ratio and allows cellular proliferation.
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Affiliation(s)
- Madeleine Chalfant
- Department of Biology, Davidson College, Davidson, North Carolina, United States of America
| | - Karen K. Bernd
- Department of Biology, Davidson College, Davidson, North Carolina, United States of America
- * E-mail:
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Victorino VJ, Panis C, Campos FC, Cayres RC, Colado-Simão AN, Oliveira SR, Herrera ACSA, Cecchini AL, Cecchini R. Decreased oxidant profile and increased antioxidant capacity in naturally postmenopausal women. AGE (DORDRECHT, NETHERLANDS) 2013; 35:1411-21. [PMID: 22645022 PMCID: PMC3705106 DOI: 10.1007/s11357-012-9431-9] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Accepted: 05/15/2012] [Indexed: 05/15/2023]
Abstract
Recent works have shown a dual side of estrogens, and research on the relationship between oxidative stress and menopausal status remains unclear and has produced controversial results. In this work, we aimed to evaluate by sensitive methods the oxidant and antioxidant changes that develop after natural menopause. Thirty premenopausal and 28 naturally postmenopausal women volunteered for this study. Blood was collected and plasma used. 17-OH estradiol levels in plasma were estimated. Plasma levels of advanced oxidation protein products (AOPP), lipid peroxidation products (such as hydroperoxides and malondialdehyde (MDA)), and nitrites were measured, and total radical antioxidant parameter testing was performed to determine the oxidant and antioxidant profiles, respectively. Estrogen levels were significantly increased (p < 0.02) in premenopausal women (54.28 ± 9.34 pg/mL) as compared with postmenopausal women (18.10 ± 1.49 pg/mL). Postmenopausal women had lower levels of lipid hydroperoxide oxidation (p < 0.0001), lipid hydroperoxide levels evaluated by the area under the curve (AUC; 1,366,000 ± 179,400 AUC; p < 0.01), and hydroperoxides as measured by the ferrous oxidation-xylenol orange method (31.48 ± 2.7 μM; p < 0.0001). The MDA levels did not differ between pre- and postmenopausal women whether measured by thiobarbituric acid-reactive substances or high-performance liquid chromatography assays. No differences in AOPP and nitrite levels were observed between pre- and postmenopausal women. Postmenopausal women also exhibited a higher total radical antioxidant level (0.89 ± 0.08 μM Trolox; p < 0.0001). Postmenopausal women demonstrated lower levels of oxidative damage and a higher antioxidant capacity than premenopausal women.
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Affiliation(s)
- V J Victorino
- Laboratory of Pathophysiology and Free Radicals, Department of General Pathology, State University of Londrina, 86051-990, Londrina, Paraná, Brazil.
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Dasari B, Prasanthi JRP, Meiers C, Singh BB, Ghribi O. Differential effects of the estrogen receptor agonist estradiol on toxicity induced by enzymatically-derived or autoxidation-derived oxysterols in human ARPE-19 cells. Curr Eye Res 2013; 38:1159-71. [PMID: 23841471 DOI: 10.3109/02713683.2013.811257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
PURPOSE/AIM OF THE STUDY Disturbances in cholesterol metabolism and increased levels of cholesterol oxidation products (oxysterols) in retina may contribute to age-related macular degeneration (AMD). The role of oxysterols or of their target receptors liver X receptors (LXRs) and estrogen receptors (ERs) in the pathogenesis of MD is ill-known. The purpose of this study is to determine the extent to which the oxysterols 27-hydroxycholesterol (27-OHC), 25-hydroxycholesterol (25-OHC) and 7-ketocholesterol (7-KC) affect the transcriptional activity of LXR and ER. MATERIALS AND METHODS ARPE-19 cells, untreated or incubated with 27-OHC, 25-OHC or 7-KC for 24 h were harvested. We used Western blot analyses for detecting ERs and LXRs expression, dual luciferase assays for measuring LXRs and ERs transcriptional activity, cytotox-ONE homogeneous membrane integrity assay for measuring cytotoxicity, JC-1 method for measuring mitochondrial membrane potential changes and ELISA for measuring cytokine levels. RESULTS Both LXRs and ERs are expressed and are transcriptionally active in ARPE-19 cells. 27-OHC, 25-OHC and 7-KC inhibited ER-mediated transcriptional activity, whereas 27-OHC and 25-OHC increased LXR-mediated transcription. E2 reduced 25-OHC and 27-OHC-induced cytotoxicity, mitochondrial permeability potential decline, and cytokine secretion. The LXR agonist GW3965 or the LXR antagonist 5α-6α-epoxycholesterol-3-sulfate (ECHS) did not offer protection against either 27-OHC and 25-OHC or 7-KC. CONCLUSIONS Increased levels of oxysterols can decrease ER and increase LXR signaling. ER agonists can offer protection against cytotoxic effects of 27-OHC and 25-OHC, two oxysterols derived by enzymatic reactions. Although they exert similar toxicity, the cellular mechanisms involved in the toxic effects of oxysterols whether derived by enzymatic or autoxidation reactions appear to be different.
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Affiliation(s)
- Bhanu Dasari
- Department of Pharmacology, Physiology and Therapeutics and
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Andrade SS, Azevedo ADC, Monasterio ICG, Paredes-Gamero EJ, Gonçalves GA, Bonetti TC, Albertoni G, Schor E, Barreto JA, Luiza Oliva M, Juliano L, Girão MJBC, da Silva IDCG. 17β-Estradiol and steady-state concentrations of H2O2: antiapoptotic effect in endometrial cells from patients with endometriosis. Free Radic Biol Med 2013; 60:63-72. [PMID: 23416363 DOI: 10.1016/j.freeradbiomed.2013.01.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Revised: 01/25/2013] [Accepted: 01/28/2013] [Indexed: 02/04/2023]
Abstract
Increased levels of hydrogen peroxide (H2O2) can initiate protective responses to limit or repair oxidative damage. However, H2O2 signals also fine-tune responses to growth factors and cytokines controlling cell division, differentiation, and proliferation. Because 17β-estradiol (E2) also plays important roles in these processes, and is considered a major risk factor in the development and progression of endometriosis, this study evaluated whether E2 has an antiapoptotic effect on oxidative stress in endometrial cells in combination with steady-state H2O2 levels ([H2O2]ss). Endometrial stromal cells were prepared from the eutopic endometrium of 18 women with and without endometriosis to produce primary cells. These cells were stimulated with E2 for 20h, exposed to [H2O2]ss, and examined for cell viability, proliferation, and apoptosis. The endometrial cells from women with endometriosis maintained the steady state for 120min at high H2O2 concentrations. When they were pretreated with E2 and exposed to [H2O2]ss, a decrease in apoptosis level was observed compared to the control cells (p<0.01). The endometrial cells from patients with endometriosis subjected to both E2 and [H2O2]ss showed increased ERK phosphorylation. These findings suggested that H2O2 is a signaling molecule that downregulates apoptosis in endometrial cells, supporting the fact that endometriosis, albeit a benign disease, shares some features with cancer such as decreased catalase levels. These results link the E2 effects on [H2O2]ss to resistance to apoptosis and progression of endometriosis.
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Affiliation(s)
- Sheila S Andrade
- Department of Gynecology, São Paulo Federal University, São Paulo 04044, Brazil.
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Korzick DH, Lancaster TS. Age-related differences in cardiac ischemia-reperfusion injury: effects of estrogen deficiency. Pflugers Arch 2013; 465:669-85. [PMID: 23525672 DOI: 10.1007/s00424-013-1255-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2013] [Revised: 02/23/2013] [Accepted: 02/25/2013] [Indexed: 01/17/2023]
Abstract
Despite conflicting evidence for the efficacy of hormone replacement therapy in cardioprotection of postmenopausal women, numerous studies have demonstrated reductions in ischemia/reperfusion (I/R) injury following chronic or acute exogenous estradiol (E2) administration in adult male and female, gonad-intact and gonadectomized animals. It has become clear that ovariectomized adult animals may not accurately represent the combined effects of age and E2 deficiency on reductions in ischemic tolerance seen in the postmenopausal female. E2 is known to regulate the transcription of several cardioprotective genes. Acute, non-genomic E2 signaling can also activate many of the same signaling pathways recruited in cardioprotection. Alterations in cardioprotective gene expression or cardioprotective signal transduction are therefore likely to result within the context of aging and E2 deficiency and may help explain the reduced ischemic tolerance and loss of cardioprotection in the senescent female heart. Quantification of the mitochondrial proteome as it adapts to advancing age and E2 deficiency may also represent a key experimental approach to uncover proteins associated with disruptions in cardiac signaling contributing to age-associated declines in ischemic tolerance. These alterations have important ramifications for understanding the increased morbidity and mortality due to ischemic cardiovascular disease seen in postmenopausal females. Functional perturbations that occur in mitochondrial respiration and Ca(2+) sensitivity with age-associated E2 deficiency may also allow for the identification of alternative therapeutic targets for reducing I/R injury and treatment of the leading cause of death in postmenopausal women.
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Affiliation(s)
- Donna H Korzick
- Department of Kinesiology, The Pennsylvania State University, University Park, PA 16802, USA.
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Arias-Loza PA, Muehlfelder M, Pelzer T. Estrogen and estrogen receptors in cardiovascular oxidative stress. Pflugers Arch 2013; 465:739-46. [DOI: 10.1007/s00424-013-1247-7] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 02/06/2013] [Accepted: 02/07/2013] [Indexed: 01/21/2023]
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Effects of estradiol on the endocytic transport of vitamin D carrier protein in hepatocytes. Biochim Biophys Acta Gen Subj 2013; 1830:3421-6. [PMID: 23416408 DOI: 10.1016/j.bbagen.2013.01.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 01/16/2013] [Accepted: 01/21/2013] [Indexed: 01/24/2023]
Abstract
BACKGROUND The possible modulation of receptor-mediated endocytosis (RME) by sex steroids is not well understood, especially in terms of the different receptor-ligand systems and cell types that may exhibit such regulation. The main objective of the current study was to examine the short-term effects of 17β-estradiol (E2) on RME of an extracellular carrier protein for calciferols, vitamin D-binding protein (DBP). METHODS Murine male and female primary hepatocytes were treated for 30min in the absence (controls) or presence of Ε2 (1μM). Labeled DBP was then added, and its endocytosis was measured after an incubation of 10min at 37°C using standard ELISA techniques. To obtain further insight into potential molecular mechanisms, fulvestrant and 17α-ethinyl estradiol (EE) were also analyzed. And as part of comparative analyses, a second nutrient carrier protein, vitamin A-binding protein (RBP), was also analyzed. RESULTS The results provide the first evidence for an estradiol-dependent stimulation of DBP endocytosis (p<0.05 relative to controls without Ε2). This stimulation, however, was only observed in female hepatocytes. Uptake of RBP was enhanced to a similar extent as DBP by estradiol. In normal (non-estradiol treated) male and female hepatocytes such changes in DBP or RBP endocytosis were not observed. Both fulvestrant and EE exhibited a significant (p<0.05), but incomplete, inhibition of Ε2-dependent stimulation of endocytosis. CONCLUSIONS The results provide novel evidence for Ε2 effects on endocytic transport; and for gender-related differences in E2-enhanced transport. These Ε2 effects may be partly dependent on estrogen receptors; but possible, additional or alternative mechanisms are also proposed. GENERAL SIGNIFICANCE Endocytic transport is a fundamental function whose regulation has implications for cell signaling, growth, survival, differentiation, and death. This study helps delineate a possible endocrine regulatory pathway involving modulation of endocytosis by a steroid hormone. It also provides a potential, new relation between different hormonal regulators, e.g., estradiol effects on cellular assimilation of calciferols.
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Identification of candidate polymorphisms on stress oxidative and DNA damage repair genes related with clinical outcome in breast cancer patients. Int J Mol Sci 2012; 13:16500-13. [PMID: 23443115 PMCID: PMC3546704 DOI: 10.3390/ijms131216500] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/23/2012] [Accepted: 11/27/2012] [Indexed: 11/16/2022] Open
Abstract
Diverse polymorphisms have been associated with the predisposition to develop cancer. On fewer occasions, they have been related to the evolution of the disease and to different responses to treatment. Previous studies of our group have associated polymorphisms on genes related to oxidative stress (rs3736729 on GCLC and rs207454 on XDH) and DNA damage repair (rs1052133 on OGG1) with a predisposition to develop breast cancer. In the present work, we have evaluated the hypothesis that these polymorphisms also play a role in a patient's survival. A population-based cohort study of 470 women diagnosed with primary breast cancer and a median follow up of 52.44 months was conducted to examine the disease-free and overall survival in rs3736729, rs207454 and rs1052133 genetic variants. Adjusted Cox regression analysis was used to that end. The Kaplan-Meier analysis shows that rs3736729 on GCLC presents a significant association with disease-free survival and overall survival. The polymorphisms rs1052133 on OGG1 and rs207454 on XDH show a trend of association with overall survival. The analysis based on hormonal receptor status revealed a stronger association. The CC genotype on rs207454 (XDH) was significantly associated with lower time of disease free survival (p = 0.024) in progesterone receptor negative (PGR-) patients and rs3736729 (GCLC) was significantly associated with disease free survival (p = 0.001) and overall survival (p = 0.012) in the subgroup of estrogen receptor negative (ER-) patients. This work suggests that unfavorable genetic variants in the rs207454 (XDH) and rs3736729 (GCLC) polymorphisms may act as predictors of the outcome in negative progesterone receptor and negative estrogen receptor breast cancer patients, respectively.
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Nakamoto M, Hirose M, Kawakatsu M, Nakayama T, Urata Y, Kamata K, Kaminogo M, Li TS, Nagata I. Serum S-glutathionylated proteins as a potential biomarker of carotid artery stenosis. Clin Biochem 2012; 45:1331-5. [DOI: 10.1016/j.clinbiochem.2012.06.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 05/18/2012] [Accepted: 06/13/2012] [Indexed: 10/28/2022]
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Bell JR, Mellor KM, Wollermann AC, Delbridge LM. Cardiac ischaemic stress: cardiomyocyte Ca²⁺, sex and sex steroids. Clin Exp Pharmacol Physiol 2012; 38:717-23. [PMID: 21722161 DOI: 10.1111/j.1440-1681.2011.05567.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
1. Important sex differences exist in ischaemic heart disease. Oestrogen has been conventionally regarded as providing a cardioprotective benefit and testosterone frequently perceived to exert a deleterious effect. However, there is accumulating evidence that argues against this simple dichotomy, suggesting that the influence of oestrogen and testosterone conferring benefit or detriment may be context specific. 2. Cardiomyocyte calcium (Ca(2+)) loading is recognized to be a major factor in acute ischaemia-reperfusion pathology, promoting cell death, contractile dysfunction and arrhythmogenic activity. Ca(2+)/calmodulin-dependent kinase II (CaMKII) is a mediator of many of the cardiomyocyte Ca(2+)-related pathologies in ischaemia-reperfusion. Cardiomyocyte Ca(2+)-handling processes have been shown to be modulated by the actions of oestrogen and testosterone. A role for these sex steroids in influencing CaMKII activation is argued. 3. Although many experimental studies of oestrogen manipulation can identify a cardioprotective role for this sex steroid, there are also numerous reports that fail to demonstrate sex differences in postischaemic recovery. Experimental studies report that testosterone can be protective in ischaemia-reperfusion in males and females in some settings. 4. Further studies of sex steroid influence in the ischaemic heart will allow the development of therapeutic interventions that are specifically targeted for male and female hearts.
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Affiliation(s)
- James R Bell
- Cardiac Phenomics, Department of Physiology, University of Melbourne, Melbourne, Victoria, Australia.
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Durgadoss L, Nidadavolu P, Valli RK, Saeed U, Mishra M, Seth P, Ravindranath V. Redox modification of Akt mediated by the dopaminergic neurotoxin MPTP, in mouse midbrain, leads to down‐regulation of pAkt. FASEB J 2011; 26:1473-83. [DOI: 10.1096/fj.11-194100] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Lalitha Durgadoss
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
| | - Prakash Nidadavolu
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
- Centre for NeuroscienceIndian Institute of ScienceBangaloreIndia
| | - Rupanagudi Khader Valli
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
| | - Uzma Saeed
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
| | - Mamata Mishra
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
| | - Pankaj Seth
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
| | - Vijayalakshmi Ravindranath
- Division of Molecular and Cellular NeurosciencesNational Brain Research CentreNainwal ModeManesarIndia
- Centre for NeuroscienceIndian Institute of ScienceBangaloreIndia
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Lin DY, Tsai FJ, Tsai CH, Huang CY. Mechanisms governing the protective effect of 17β-estradiol and estrogen receptors against cardiomyocyte injury. Biomedicine (Taipei) 2011. [DOI: 10.1016/j.biomed.2011.10.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Peng YW, Buller CL, Charpie JR. Impact of N-acetylcysteine on neonatal cardiomyocyte ischemia-reperfusion injury. Pediatr Res 2011; 70:61-6. [PMID: 21427628 DOI: 10.1203/pdr.0b013e31821b1a92] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Reactive oxygen species (ROS) are hypothesized to play a key role in myocardial ischemia-reperfusion (IR) injury after cardiopulmonary bypass in children. Clinical studies in adults and several animal models suggest that myocardial IR injury involves cardiomyocyte apoptosis and necrosis. This study investigated a potential relationship between IR-induced ROS production and neonatal cardiomyocyte apoptosis using both in vitro and ex vivo techniques. For in vitro experiments, embryonic rat cardiomyocytes (H9c2 cells) exposed to hypoxia-reoxygenation (HR) showed a time-dependent increase in gp91 phox (a marker for ROS production by NADPH oxidases), caspase-3 (a key mediator of apoptosis) expression, and a decrease in the glutathione redox ratio. N-acetylcysteine (NAC; 0.25-2 mM), a potent antioxidant, decreased gp91 phox and caspase-3 expression, inhibited apoptosis and restored the glutathione redox ratio. For ex vivo study, IR injury significantly reduced left ventricular (LV) function and increased the expression of gp91 phox and caspase-3 in Langendorff-perfused neonatal (7-14 d) rabbit hearts. NAC (0.4 mM) treatment completely attenuated LV dysfunction after IR. In summary, neonatal myocardial IR injury is associated with an increase in cardiomyocyte oxidative stress and apoptosis. NAC attenuates apoptosis in an in vitro embryonic rat cardiomyocyte model of HR, and myocardial dysfunction in an ex vivo neonatal rabbit model of myocardial IR injury.
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Affiliation(s)
- Yun-Wen Peng
- Department of Pediatrics & Communicable Diseases, University of Michigan Medical School, University of Michigan, Ann Arbor, Michigan 48109, USA
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