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Lee S, Kim J, Kong H, Kim YS. Ameliorative effects of elderberry (Sambucus nigra L.) extract and extract-derived monosaccharide-amino acid on H2O2-induced decrease in testosterone-deficiency syndrome in a TM3 Leydig cell. PLoS One 2024; 19:e0302403. [PMID: 38662754 PMCID: PMC11045058 DOI: 10.1371/journal.pone.0302403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
With aging, men develop testosterone-deficiency syndrome (TDS). The development is closely associated with age-related mitochondrial dysfunction of Leydig cell and oxidative stress-induced reactive oxygen species (ROS). Testosterone-replacement therapy (TRT) is used to improve the symptoms of TDS. However, due to its various side effects, research on functional ingredients derived from natural products that do not have side effects is urgently needed. In this study, using the mitochondrial dysfunction TM3 (mouse Leydig) cells, in which testosterone biosynthesis is reduced by H2O2, we evaluated the effects of elderberry extract and monosaccharide-amino acid (fructose-leucine; FL) on mRNA and protein levels related to steroidogenesis-related enzymes steroidogenic acute regulatory protein (StAR), cytochrome P450 11A1(CYP11A1, cytochrome P450 17A1(CYP17A1), cytochrome P450 19A1(CYP19A1, aromatase), 3β-hydroxysteroid dehydrogenase (3β-HSD), and 17β-hydroxysteroid dehydrogenase(17β-HSD). We analyzed elderberry extract and extract-derived FL for changes in ROS scavenging activity and testosterone secretion. Elderberry extract and FL significantly reduced H2O2-induced intracellular ROS levels, improved testosterone secretion, and increased the mRNA and protein expression levels of steroidogenesis-related enzymes (StAR, 3b-HSD, 17b-HSD, CYP11A1, CYp17A1). However, the conversion of testosterone to estradiol was inhibited by elderberry extract and extract-derived FL, which reduced the mRNA and protein expression of CYP19A1. In conclusion, elderberry extract and FL are predicted to have value as novel functional ingredients that may contribute to the prevention of TDS by ameliorating reduced steroidogenesis.
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Affiliation(s)
- Sujung Lee
- Gochang Food & Industry Institute, Gochang, Korea
- Department of Food Science & Technology Jeonbuk National University, Jeonju, Korea
| | | | - Hyunseok Kong
- College of Animal Biotechnology and Resource, Sahmyook University, Seoul, Korea
- PADAM Natural Material Research Institute, Sahmyook University, Seoul, Korea
| | - Yong-Suk Kim
- Department of Food Science & Technology Jeonbuk National University, Jeonju, Korea
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2
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Visanji M, Venegas-Pino DE, Werstuck GH. Understanding One Half of the Sex Difference Equation: The Modulatory Effects of Testosterone on Diabetic Cardiomyopathy. Am J Pathol 2024; 194:551-561. [PMID: 38061627 DOI: 10.1016/j.ajpath.2023.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/31/2023] [Accepted: 11/20/2023] [Indexed: 12/20/2023]
Abstract
Diabetes is a prevalent disease, primarily characterized by high blood sugar (hyperglycemia). Significantly higher rates of myocardial dysfunction have been noted in individuals with diabetes, even in those without coronary artery disease or high blood pressure (hypertension). Numerous molecular mechanisms have been identified through which diabetes contributes to the pathology of diabetic cardiomyopathy, which presents as cardiac hypertrophy and fibrosis. At the cellular level, oxidative stress and inflammation in cardiomyocytes are triggered by hyperglycemia. Although males are generally more likely to develop cardiovascular disease than females, diabetic males are less likely to develop diabetic cardiomyopathy than are diabetic females. One reason for these differences may be the higher levels of serum testosterone in males compared with females. Although testosterone appears to protect against cardiomyocyte oxidative stress and exacerbate hypertrophy, its role in inflammation and fibrosis is much less clear. Additional preclinical and clinical studies will be required to delineate testosterone's effect on the diabetic heart.
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Affiliation(s)
- Mika'il Visanji
- Faculty of Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Geoff H Werstuck
- Thrombosis and Atherosclerosis Research Institute, Hamilton, Ontario, Canada; Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
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Wang L, Dai W, Zhu R, Long T, Zhang Z, Song Z, Mu S, Wang S, Wang H, Lei J, Zhang J, Xia W, Li G, Gao W, Zou H, Li Y, Zhan L. Testosterone and soluble ST2 as mortality predictive biomarkers in male patients with sepsis-induced cardiomyopathy. Front Med (Lausanne) 2024; 10:1278879. [PMID: 38259843 PMCID: PMC10801257 DOI: 10.3389/fmed.2023.1278879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/15/2023] [Indexed: 01/24/2024] Open
Abstract
Sepsis-induced cardiomyopathy (SIC) is characterized by high mortality and poor outcomes. This study aimed to explore the relationship between testosterone and soluble ST2 (sST2) and all-cause mortality in patients with SIC. Clinical data from SIC patients at Renmin Hospital of Wuhan University from January 2021 and March 2023 were reviewed. Serum testosterone and sST2 were measured at admission. Kaplan-Meier analysis and receiver operative characteristic curve (ROC) were used to estimate the predictive values of testosterone and sST2 on 28 days and 90 days mortality of SIC. A total of 327 male subjects with SIC were enrolled in this study. During the 28 days and 90 days follow-up, 87 (26.6%) and 103 deaths (31.5%) occurred, respectively. Kaplan-Meier analysis showed significantly higher 28 days and 90 days survival in patients with higher testosterone and decreased sST2 levels (p < 0.001). Testosterone, sST2, and N-terminal pro-B-type natriuretic peptide (NT-proBNP) were significantly associated with 28 days and 90 days mortality (p < 0.05). Partial correlation analysis showed strong positive correlation between testosterone and left ventricular ejection fraction (LVEF) (p < 0.001), and negative correlation between testosterone and sST2 (p < 0.001), high-sensitivity troponin I (hs-TnI) levels (p < 0.001) and smoke history (p < 0.01). The concentrations of sST2 were positively related with E/e' ratio (p < 0.001), and negatively correlated with TAPSE (p < 0.001). The combination of testosterone and sST2 enhanced the prediction of both 28 days [area under the ROC curve (AUC), 0.805] and 90 days mortality (AUC, 0.833). Early serum testosterone and sST2 levels could predict mortality of SIC independently and jointly. Further research is needed to determine the utility of biochemical markers in identifying high-risk patients with SIC.
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Affiliation(s)
- Lu Wang
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wen Dai
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Ruiyao Zhu
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
- Department of Infection Prevention and Control, Renmin Hospital of Wuhan University, Wuhan, China
| | - Tingting Long
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhaocai Zhang
- Department of Critical Care Medicine, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhenju Song
- Department of Emergency Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Sucheng Mu
- Department of Emergency Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Shasha Wang
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Huijuan Wang
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jiaxi Lei
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jing Zhang
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenfang Xia
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Guang Li
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Wenwei Gao
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Handong Zou
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yan Li
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, China
| | - Liying Zhan
- Department of Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, China
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Mgbudom-Okah CJ, Abarikwu SO, Wegwu MO, Henkel R. Testosterone restores TM3 and TM4 cell viability, reduces reactive oxygen species generation, and protects against atrazine-induced stereological changes in rat testes. J Biochem Mol Toxicol 2024; 38:e23562. [PMID: 37842800 DOI: 10.1002/jbt.23562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 10/17/2023]
Abstract
In this study, we performed the stereological examination of rat testes and evaluated the protective effect of testosterone against atrazine (ATZ) toxicity in TM3 Leydig and TM4 Sertoli cells. Testosterone intake in rats increased the volumetric density of the seminiferous tubules; tubular diameter; germinal epithelial height; number of spermatogonia, primary and secondary spermatocytes, round spermatids, Sertoli cells, and Leydig cells; and Johnsen scores compared with the values after ATZ treatment (p < 0.05). Furthermore, testosterone increased the viability of TM3 cells and reduced reactive oxygen species (ROS) generation in TM4 cells compared to the ATZ-treated group. In conclusion, exogenous testosterone intake maintains testicular morphometry and spermatogenesis in rats, and minimizes cell death and ROS generation in testicular cell lines exposed to ATZ. However, TM4 cells are more responsive to testosterone-mediated regulation of ROS generation induced by ATZ than TM3 cells.
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Affiliation(s)
- Chidimma J Mgbudom-Okah
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Sunny O Abarikwu
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Matthew O Wegwu
- Reproductive Biology and Molecular Toxicology Research Group, Department of Biochemistry, University of Port Harcourt, Choba, Nigeria
| | - Ralf Henkel
- Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
- LogixX Pharma, Berkshire, UK
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Dos Santos DC, de Souza Bittencout R, Arêas ID, Pena LSC, Almeida CF, de Brito Guimarães BC, Dórea RSDM, Correia TML, Júnior MNS, Morbeck LLB, Dos Santos TC, Souza CLS, de Souza SI, de Jesus Soares T, Yatsuda R, Campos GB, Marques LM. Effects of 5α-dihydrotestosterone on the modulation of monocyte/macrophage response to Staphylococcus aureus: an in vitro study. Biol Sex Differ 2023; 14:15. [PMID: 37004108 PMCID: PMC10065996 DOI: 10.1186/s13293-023-00501-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
BACKGROUND Staphylococcus aureus (S. aureus) is a pathogen responsible for a wide range of clinical manifestations and potentially fatal conditions. There is a paucity of information on the influence of androgens in the immune response to S. aureus infection. In this study, we evaluated the influence of the hormone 5α-dihydrotestosterone (DHT) on mouse peritoneal macrophages (MPMs) and human peripheral blood monocytes (HPBMs) induced by S. aureus. METHODS An in vitro model of MPMs from BALB/c sham males, orchiectomised (OQX) males, and females was used. Cells were inoculated with 10 μL of S. aureus, phage-type 80 or sterile saline (control) for 6 h. The MPMs of OQX males and females were pre-treated with 100 μL of 10-2 M DHT for 24 h before inoculation with S. aureus. The concentration of the cytokines TNF-α, IL-1α, IL-6, IL-8, and IL-10; total nitrites (NO-2); and hydrogen peroxide (H2O2) were measured in the supernatant of MPM cultures. In addition, the toll-like receptor 2 (TLR2) and nuclear factor kappa B (NF-kB) genes that are involved in immune responses were analysed. For the in vitro model of HPBMs, nine men and nine women of childbearing age were selected and HPBMs were isolated from samples of the volunteers' peripheral blood. In women, blood was collected during the periovulatory period. The HPBMs were inoculated with S. aureus for 6 h and the supernatant was collected for the analysis of cytokines TNF-α, IL-6, IL-12; and GM-CSF, NO-2, and H2O2. The HPBMs were then removed for the analysis of 84 genes involved in the host's response to bacterial infections by RT-PCR array. GraphPad was used for statistical analysis with a p value < 0.05. RESULTS Our data demonstrated that MPMs from sham males inoculated with S. aureus displayed higher concentrations of inflammatory cytokines and lower concentrations of IL-10, NO-2, and H2O2 when compared with MPMs from OQX males and females. A similar result was observed in the HPBMs of men when compared with those of women. Previous treatment with DHT in women HPBMs increased the production of pro-inflammatory cytokines and decreased the levels of IL-10, NO-2, and H2O2. The analysis of gene expression showed that DHT increased the activity of the TLR2 and NF-kB pathways in both MPMs and HPBMs. CONCLUSIONS We found that DHT acts as an inflammatory modulator in the monocyte/macrophage response induced by S. aureus and females exhibit a better immune defence response against this pathogen.
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Affiliation(s)
- Déborah Cruz Dos Santos
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Rafaela de Souza Bittencout
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Iago Dórea Arêas
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Larissa Silva C Pena
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Carolline Florentino Almeida
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Bruna Carolina de Brito Guimarães
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Rafael Santos Dantas Miranda Dórea
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Thiago Macêdo Lopes Correia
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | | | - Lorena Lôbo Brito Morbeck
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Talita Costa Dos Santos
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Clarissa Leal S Souza
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | | | - Telma de Jesus Soares
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Regiane Yatsuda
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
| | - Guilherme Barreto Campos
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil
- University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Brazil
| | - Lucas Miranda Marques
- Multidisciplinary Institute of Health, Federal University of Bahia (UFBA), Rua Hormindo Barros, 58, Candeias, Vitória da Conquista, Bahia, 45029-094, Brazil.
- University of Santa Cruz (UESC), Campus Soane Nazaré de Andrade, Ilhéus, Brazil.
- Department of Microbiology, Institute of Biomedical Science, University of São Paulo, São Paulo, Brazil.
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Szadkowska I, Guligowska A, Jegier A, Pawlikowski M, Pisarek H, Winczyk K, Kostka T. Serum testosterone level correlates with left ventricular hypertrophy in older women. Front Endocrinol (Lausanne) 2023; 13:1079043. [PMID: 36686418 PMCID: PMC9853043 DOI: 10.3389/fendo.2022.1079043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/19/2022] [Indexed: 01/09/2023] Open
Abstract
Introduction Sex hormones may play an important role in age-related cardiac remodeling. However, their impact on cardiac structure and function in females of advanced age still remains unclear. The aim of this study is to evaluate the relationship between sex hormones level and echocardiographic parameters in older women with concomitant cardiovascular diseases. Materials and Methods The study group included 52 community-dwelling women with mean age 79.5 ± 2.8 years, consecutive patients of an outpatient geriatric clinic. In all the subjects, a transthoracic echocardiogram was performed and serum testosterone, estradiol, follicle-stimulating hormone, luteinising hormone, dehydroepiandrosterone sulphate, and cortisol levels were determined. Results Testosterone level correlated positively with interventricular septum diastolic dimension (IVSd) (rS=0.293, p<0.05), left ventricular mass index (rS=0.285, p<0.05), E/E' ratio (rS=0.301, p<0.05), and negatively with E' (rS=-0.301, p<0.05). Estradiol level showed a positive correlation with the posterior wall dimension (rS=0.28, p<0.05). Besides, no significant correlations between clinical or echocardiographic parameters and other hormones were observed. Female subjects with diagnosed left ventricular hypertrophy (LVH) (n=34) were characterized by a significantly higher rate of hypertension (p=0.011), higher waist-to-height ratio (p=0.009), higher testosterone level (0.82 vs. 0.48 nmol/L, p=0.024), higher testosterone/estradiol ratio (16.4 vs. 9.9, p=0.021), and received more anti-hypertensive drugs (p=0.030). In a multiple stepwise logistic regression, the best determinants of LVH were the presence of hypertension (OR=6.51; 95% CI 1.62-26.1), and testosterone level (OR= 6.6; 95% CI 1.19-36.6). Conclusions Higher serum testosterone levels may contribute to pathological cardiac remodeling, especially in hypertensive women. Estradiol, gonadotropins, DHEAS, and cortisol were not related to echocardiographic parameters.
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Affiliation(s)
- Iwona Szadkowska
- Department of Sports Medicine, Medical University of Lodz, Lodz, Poland
| | - Agnieszka Guligowska
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, Lodz, Poland
| | - Anna Jegier
- Department of Sports Medicine, Medical University of Lodz, Lodz, Poland
| | - Marek Pawlikowski
- Department of Immunoendocrinology, Medical University of Lodz, Lodz, Poland
| | - Hanna Pisarek
- Department of Neuroendocrinology, Chair of Laboratory and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Katarzyna Winczyk
- Department of Neuroendocrinology, Chair of Laboratory and Molecular Diagnostics, Medical University of Lodz, Lodz, Poland
| | - Tomasz Kostka
- Department of Geriatrics, Healthy Ageing Research Centre, Medical University of Lodz, Lodz, Poland
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7
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Enina TN, Kuznetsov VA, Soldatova AM. [Testosterone and congestive heart failure]. Kardiologiia 2022; 62:61-67. [PMID: 35989631 DOI: 10.18087/cardio.2022.7.n1242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 09/11/2020] [Indexed: 06/15/2023]
Abstract
This article summarizes current information about the interrelation between testosterone concentrations and chronic heart failure (CHF). The authors described key publications that address the prevalence of testosterone deficiency in patients with CHF, the effect of endogenous and exogenous testosterone on the cardiovascular system, the relationship between testosterone levels and the severity and prognosis of CHF, and the efficacy of interventional treatments for CHF.
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Affiliation(s)
- T N Enina
- Tyumen Cardiology Research Center, Tomsk National Research Medical Center, Tomsk
| | - V A Kuznetsov
- Tyumen Cardiology Research Center, Tomsk National Research Medical Center, Tomsk
| | - A M Soldatova
- Tyumen Cardiology Research Center, Tomsk National Research Medical Center, Tomsk
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Armeni E, Lambrinoudaki I. Menopause, androgens, and cardiovascular ageing: a narrative review. Ther Adv Endocrinol Metab 2022; 13:20420188221129946. [PMID: 36325501 PMCID: PMC9619256 DOI: 10.1177/20420188221129946] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 09/09/2022] [Indexed: 11/07/2022] Open
Abstract
Cardiovascular disease is the leading cause of death worldwide; however, women tend to be less affected than men during their reproductive years. The female cardiovascular risk increases significantly around the time of the menopausal transition. The loss of the protective action of ovarian oestrogens and the circulating androgens has been implicated in possibly inducing subclinical and overt changes in the cardiovascular system after the menopausal transition. In vitro studies performed in human or animal cell lines demonstrate an adverse effect of testosterone on endothelial cell function and nitric oxide bioavailability. Cohort studies evaluating associations between testosterone and/or dehydroepiandrosterone and subclinical vascular disease and clinical cardiovascular events show an increased risk for women with more pronounced androgenicity. However, a mediating effect of insulin resistance is possible. Data on cardiovascular implications following low-dose testosterone treatment in middle-aged women or high-dose testosterone supplementation for gender affirmatory purposes remain primarily inconsistent. It is prudent to consider the possible adverse association between testosterone and endothelial function during the decision-making process of the most appropriate treatment for a postmenopausal woman.
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Affiliation(s)
| | - Irene Lambrinoudaki
- Second Department of Obstetrics and Gynecology, Aretaieio Hospital, National and Kapodistrian University of Athens, Athens, Greece
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9
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Lynch S, Boyett JE, Smith MR, Giordano-Mooga S. Sex Hormone Regulation of Proteins Modulating Mitochondrial Metabolism, Dynamics and Inter-Organellar Cross Talk in Cardiovascular Disease. Front Cell Dev Biol 2021; 8:610516. [PMID: 33644031 PMCID: PMC7905018 DOI: 10.3389/fcell.2020.610516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 11/30/2020] [Indexed: 12/11/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of death in the U.S. and worldwide. Sex-related disparities have been identified in the presentation and incidence rate of CVD. Mitochondrial dysfunction plays a role in both the etiology and pathology of CVD. Recent work has suggested that the sex hormones play a role in regulating mitochondrial dynamics, metabolism, and cross talk with other organelles. Specifically, the female sex hormone, estrogen, has both a direct and an indirect role in regulating mitochondrial biogenesis via PGC-1α, dynamics through Opa1, Mfn1, Mfn2, and Drp1, as well as metabolism and redox signaling through the antioxidant response element. Furthermore, data suggests that testosterone is cardioprotective in males and may regulate mitochondrial biogenesis through PGC-1α and dynamics via Mfn1 and Drp1. These cell-signaling hubs are essential in maintaining mitochondrial integrity and cell viability, ultimately impacting CVD survival. PGC-1α also plays a crucial role in inter-organellar cross talk between the mitochondria and other organelles such as the peroxisome. This inter-organellar signaling is an avenue for ameliorating rampant ROS produced by dysregulated mitochondria and for regulating intrinsic apoptosis by modulating intracellular Ca2+ levels through interactions with the endoplasmic reticulum. There is a need for future research on the regulatory role of the sex hormones, particularly testosterone, and their cardioprotective effects. This review hopes to highlight the regulatory role of sex hormones on mitochondrial signaling and their function in the underlying disparities between men and women in CVD.
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Affiliation(s)
- Shannon Lynch
- Biomedical Sciences Program, Graduate School, University of Alabama at Birmingham, Birmingham, AL, United States
| | - James E Boyett
- Biomedical Sciences Program, Department of Clinical and Diagnostic Science, University of Alabama at Birmingham, Birmingham, AL, United States
| | - M Ryan Smith
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University, Atlanta, GA, United States
| | - Samantha Giordano-Mooga
- Biomedical Sciences Program, Department of Clinical and Diagnostic Science, University of Alabama at Birmingham, Birmingham, AL, United States
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10
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Cruz-Topete D, Dominic P, Stokes KY. Uncovering sex-specific mechanisms of action of testosterone and redox balance. Redox Biol 2020; 31:101490. [PMID: 32169396 PMCID: PMC7212492 DOI: 10.1016/j.redox.2020.101490] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 02/17/2020] [Accepted: 03/01/2020] [Indexed: 12/11/2022] Open
Abstract
The molecular and pharmacological manipulation of the endogenous redox system is a promising therapy to limit myocardial damage after a heart attack; however, antioxidant therapies have failed to fully establish their cardioprotective effects, suggesting that additional factors, including antioxidant system interactions with other molecular pathways, may alter the pharmacological effects of antioxidants. Since gender differences in cardiovascular disease (CVD) are prevalent, and sex is an essential determinant of the response to oxidative stress, it is of particular interest to understand the effects of sex hormone signaling on the activity and expression of cellular antioxidants and the pharmacological actions of antioxidant therapies. In the present review, we briefly summarize the current understanding of testosterone effects on the modulation of the endogenous antioxidant systems in the CV system, cardiomyocytes, and the heart. We also review the latest research on redox balance and sexual dimorphism, with particular emphasis on the role of the natural antioxidant system glutathione (GSH) in the context of myocardial infarction, and the pro- and antioxidant effects of testosterone signaling via the androgen receptor (AR) on the heart. Finally, we discuss future perspectives regarding the potential of using combing antioxidant and testosterone replacement therapies to protect the aging myocardium.
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Affiliation(s)
- Diana Cruz-Topete
- Department of Molecular and Cellular Physiology, Shreveport, LA, USA; Center for Cardiovascular Diseases and Sciences, Shreveport, LA, USA.
| | - Paari Dominic
- Center for Cardiovascular Diseases and Sciences, Shreveport, LA, USA; Department of Cardiology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Karen Y Stokes
- Department of Molecular and Cellular Physiology, Shreveport, LA, USA; Center for Cardiovascular Diseases and Sciences, Shreveport, LA, USA
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Chen YM, Yu XJ, Liu KL, Gao HL, Li Y, Sun TZ, Shi XL, Li HB, Zhu GQ, Qi J, Kang YM. Inhibition of Hypothalamic Inhibitor κB Kinase β/Nuclear Transcription Factor κB Pathway Attenuates Metabolism and Cardiac Dysfunction in Type 2 Diabetic Rats. Neuroendocrinology 2020; 110:899-913. [PMID: 31671427 DOI: 10.1159/000504444] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 10/30/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Inflammation and oxidative stress play important roles in energy imbalance and its complications. Recent research indicates that hypothalamic inflammation may contribute to the pathogenesis of metabolic syndrome and cardiac dysfunction, but the mechanisms remain unclear. We hypothesized that suppression of the proinflammatory IKKβ/NF-κB pathway in the hypothalamus can improve energy balance and cardiac function in type 2 diabetic (T2D) rats. METHODS Normal and T2D rats received bilateral hypothalamic arcuate nucleus (ARC) infusions of the IKKβ inhibitor SC-514 or vehicle via osmotic minipump. Metabolic phenotyping, immunohistochemical analyses, and biochemical analyses were used to investigate the outcomes of inhibition of the hypothalamic IKKβ. Echocardiography and glucometer were used for measuring cardiac function and blood glucose, respectively. Blood samples were collected for the evaluation of circulating proinflammatory cytokines. Heart was harvested for cardiac morphology evaluations. The ARC was harvested and analyzed for IKKβ, NF-κB, proinflammatory cytokines, reactive oxygen species (ROS), and NAD(P)H (gp91phox, p47phox) oxidase activity levels and neuropeptides. RESULTS Compared with normal rats, T2D rats were characterized by hyperglycemia, hyperinsulinemia, glucose intolerance, cardiac dysfunction, as well as higher ARC levels of IKKβ, NF-κB, proinflammatory cytokines, ROS, gp91phox, and p47phox. ARC infusion of the IKKβ inhibitor SC-514 attenuated all these changes in T2D rats, but not in normal rats. CONCLUSIONS Our results indicate that the hypothalamic IKKβ/NF-κB pathway plays a key role in modulating energy imbalance and cardiac dysfunction, suggesting its potential therapeutic role during type 2 diabetes mellitus.
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Affiliation(s)
- Yan-Mei Chen
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Xiao-Jing Yu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Kai-Li Liu
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Hong-Li Gao
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Ying Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Tian-Ze Sun
- Department of Human Anatomy and Histology and Embryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Xiao-Lian Shi
- Department of Pharmacology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Hong-Bao Li
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
| | - Guo-Qing Zhu
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Jie Qi
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China,
| | - Yu-Ming Kang
- Department of Physiology and Pathophysiology, Xi'an Jiaotong University School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, China
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Abstract
The cardiovascular system is particularly sensitive to androgens, but some controversies exist regarding the effect of testosterone on the heart. While among anabolic abusers, cases of sudden cardiac death have been described, recently it was reported that low serum level of testosterone was correlated with increased risk of cardiovascular diseases (CVD) and mortality rate. This review aims to evaluate the effect of testosterone on myocardial tissue function, coronary artery disease (CAD), and death. Low testosterone level is associated with increased incidence of CAD and mortality. Testosterone administration in hypogonadal elderly men and women has a positive effect on cardiovascular function and improved clinical outcomes and survival time. Although at supraphysiologic doses, androgen may have a toxic effect, and at physiological levels, testosterone is safe and exerts a beneficial effect on myocardial function including mechanisms at cellular and mitochondrial level. The interaction with free testosterone and estradiol should be considered. Further studies are necessary to better understand the interaction mechanisms for an optimal androgen therapy in CVD.
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Affiliation(s)
- Vittorio Emanuele Bianchi
- Clinical Center Stella Maris, Laboratory of Physiology of Exercise, Strada Rovereta 42, 47891, Falciano, Republic of San Marino.
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Svensson F, Zoufir A, Mahmoud S, Afzal AM, Smit I, Giblin KA, Clements PJ, Mettetal JT, Pointon A, Harvey JS, Greene N, Williams RV, Bender A. Information-Derived Mechanistic Hypotheses for Structural Cardiotoxicity. Chem Res Toxicol 2018; 31:1119-1127. [PMID: 30350600 DOI: 10.1021/acs.chemrestox.8b00159] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adverse events resulting from drug therapy can be a cause of drug withdrawal, reduced and or restricted clinical use, as well as a major economic burden for society. To increase the safety of new drugs, there is a need to better understand the mechanisms causing the adverse events. One way to derive new mechanistic hypotheses is by linking data on drug adverse events with the drugs' biological targets. In this study, we have used data mining techniques and mutual information statistical approaches to find associations between reported adverse events collected from the FDA Adverse Event Reporting System and assay outcomes from ToxCast, with the aim to generate mechanistic hypotheses related to structural cardiotoxicity (morphological damage to cardiomyocytes and/or loss of viability). Our workflow identified 22 adverse event-assay outcome associations. From these associations, 10 implicated targets could be substantiated with evidence from previous studies reported in the literature. For two of the identified targets, we also describe a more detailed mechanism, forming putative adverse outcome pathways associated with structural cardiotoxicity. Our study also highlights the difficulties deriving these type of associations from the very limited amount of data available.
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Affiliation(s)
- Fredrik Svensson
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Azedine Zoufir
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Samar Mahmoud
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Avid M Afzal
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Ines Smit
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Kathryn A Giblin
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
| | - Peter J Clements
- GlaxoSmithKline R&D Ltd , Park Road , Ware, Hertfordshire SG12 0DP , United Kingdom
| | - Jerome T Mettetal
- Drug Safety and Metabolism , AstraZeneca , 35 Gatehouse Drive , Waltham , Massachusetts 02451 , United States
| | - Amy Pointon
- Safety and ADME Translational Sciences , AstraZeneca , Cambridge Science Park, Milton Road , Cambridge CB4 0WG , United Kingdom
| | - James S Harvey
- GlaxoSmithKline R&D Ltd , Park Road , Ware, Hertfordshire SG12 0DP , United Kingdom
| | - Nigel Greene
- Predictive Compound Safety and ADME , AstraZeneca , 35 Gatehouse Drive , Waltham , Massachusetts 02451 , United States
| | - Richard V Williams
- Lhasa Limited , Granary Wharf House, 2 Canal Wharf , Leeds LS11 5PS , United Kingdom
| | - Andreas Bender
- Centre for Molecular Informatics, Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
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Jonker SS, Louey S, Roselli CE. Cardiac myocyte proliferation and maturation near term is inhibited by early gestation maternal testosterone exposure. Am J Physiol Heart Circ Physiol 2018; 315:H1393-H1401. [PMID: 30095996 PMCID: PMC6297822 DOI: 10.1152/ajpheart.00314.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 07/19/2018] [Accepted: 08/06/2018] [Indexed: 12/27/2022]
Abstract
Polycystic ovary syndrome is a complex and common disorder in women, and those affected experience an increased burden of cardiovascular disease. It is an intergenerational syndrome, as affected women with high androgen levels during pregnancy "program" fetal development, leading to a similar phenotype in their female offspring. The effect of excess maternal testosterone exposure on fetal cardiomyocyte growth and maturation is unknown. Pregnant ewes received biweekly injections of vehicle (control) or 100 mg testosterone propionate between 30 and 59 days of gestation (early T) or between 60 and 90 days of gestation (late T). Fetuses were delivered at ~135 days of gestation, and their hearts were enzymatically dissociated to measure cardiomyocyte growth (dimensional measurements), maturation (proportion binucleate), and proliferation (nuclear Ki-67 protein). Early T depressed serum insulin-like growth factor 1 and caused intrauterine growth restriction (IUGR; P < 0.0005). Hearts were smaller with early T ( P < 0.001) due to reduced cardiac myocyte maturation ( P < 0.0005) and proliferation ( P = 0.017). Maturation was also lower in male than female fetuses ( P = 0.004) independent of treatment. Late T did not affect cardiac growth. Early excess maternal testosterone exposure depresses circulating insulin-like growth factor 1 near term and causes IUGR in both female and male offspring. These fetuses have small, immature hearts with reduced proliferation, which may reduce cardiac myocyte endowment and predispose to adverse cardiac growth in postnatal life. While excess maternal testosterone exposure leads to polycystic ovary syndrome and cardiovascular disease in female offspring, it may also predispose to complications of IUGR and cardiovascular disease in male offspring. NEW & NOTEWORTHY Using measurements of cardiac myocyte growth and maturation in an ovine model of polycystic ovary syndrome, this study demonstrates that early gestation excess maternal testosterone exposure reduces near-term cardiomyocyte proliferation and maturation in intrauterine growth-restricted female and male fetuses. The effect of testosterone is restricted to exposure during a specific period early in pregnancy, and the effects appear mediated through reduced insulin-like growth factor 1 signaling. Furthermore, male fetuses, regardless of treatment, had fewer mature cardiomyocytes than female fetuses.
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Affiliation(s)
- Sonnet S Jonker
- Center for Developmental Health, Oregon Health & Science University , Portland, Oregon
- Knight Cardiovascular Institute, Oregon Health & Science University , Portland, Oregon
| | - Samantha Louey
- Center for Developmental Health, Oregon Health & Science University , Portland, Oregon
- Knight Cardiovascular Institute, Oregon Health & Science University , Portland, Oregon
| | - Charles E Roselli
- Department of Physiology and Pharmacology, Oregon Health & Science University , Portland, Oregon
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15
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Chen HL, Liu Y, Jiang W, Wang XX, Yuan GL, Zhao YL, Yu C. Secretoneurin suppresses cardiac hypertrophy through suppression of oxidant stress. Eur J Pharmacol 2018; 822:13-24. [PMID: 29337195 DOI: 10.1016/j.ejphar.2018.01.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 12/25/2017] [Accepted: 01/10/2018] [Indexed: 02/05/2023]
Abstract
The neuropeptide secretoneurin (SN) plays protective roles in myocardial ischemia. In the present study, the effect of SN in cardiac hypertrophy was investigated. We observed that, in isoproterenol (ISO) treatment induced cardiac or cardiomyocytes hypertrophy, a marked increase in the expression of endogenous SN in mouse plasma, myocardium and primary-cultured cardiomyocytes occurs. In hypertrophic mice, the heart size, heart weight/body weight (HW/BW) ratio, cardiomyocyte size, and atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) expression were significantly higher than those in controls but were effectively suppressed by SN gene therapy. Similarly, the protective effects of SN were also observed in cultured cardiomyocytes following ISO treatment. SN significantly increased the activity of catalase and superoxide dismutase (SOD) in parallel with the decrease in reactive oxygen species levels in cardiomyocytes. We observed that SN evoked the activation of all of the AMPK, P38/MAPK and ERK/MAPK pathways in cardiomyocytes, but pretreatment with only AMPK inhibitor (compound C) and ERK1/2/MAPK inhibitor (PD98059) counteracted the protective effects of SN against cardiomyocyte hypertrophy and the suppressive effects of SN on oxidant stress in cardiomyocytes. These results indicated that endogenous SN is induced in hypertrophic cardiomyocytes, and may play a protective role in the pathogenesis of cardiac hypertrophy. These results suggest that exogenous SN supplementation protects the cardiac hypertrophy induced by ISO treatment through the activation of AMPK and ERK/MAPK pathways, thus upregulating antioxidants and suppressing oxidative stress.
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16
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Zhang C, Liu X, Zhang C, Li J, Guo W, Yan D, Yang C, Zhao J, Wu X, Shi J. Phosphorylated eEF2 is SUMOylated and induces cardiomyocyte apoptosis during myocardial ischemia reperfusion. J Cardiol 2017; 69:689-698. [DOI: 10.1016/j.jjcc.2016.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 05/21/2016] [Accepted: 05/27/2016] [Indexed: 12/13/2022]
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17
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Toro-Urrego N, Garcia-Segura LM, Echeverria V, Barreto GE. Testosterone Protects Mitochondrial Function and Regulates Neuroglobin Expression in Astrocytic Cells Exposed to Glucose Deprivation. Front Aging Neurosci 2016; 8:152. [PMID: 27445795 PMCID: PMC4921852 DOI: 10.3389/fnagi.2016.00152] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 06/13/2016] [Indexed: 12/11/2022] Open
Abstract
Testosterone is a hormone that has been shown to confer neuroprotection from different insults affecting the central nervous system (CNS). Testosterone induces this protection by different mechanisms that include the activation of anti-apoptotic pathways that are directly implicated in neuronal survival. However, little attention has been devoted to its actions on glial cells. In the present study, we have assessed whether testosterone exerts protection in a human astrocyte cell model, the T98G cells. Our results indicate that testosterone improves cell survival and mitochondrial membrane potential and reduces nuclear fragmentation and reactive oxygen species (ROS) generation. These effects were accompanied by a positive regulation of neuroglobin, an oxygen-binding and sensor protein, which may serve as a regulator of ROS and nitrogen reactive species (NOS), and these protective effects of testosterone may be at least in part mediated by estradiol and DHT. In conclusion, these findings suggest that astroglia may mediate some of the protective actions of testosterone in the brain upon pathological conditions.
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Affiliation(s)
- Nicolas Toro-Urrego
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana Bogotá, Colombia
| | | | | | - George E Barreto
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad JaverianaBogotá, Colombia; Instituto de Ciencias Biomédicas, Universidad Autónoma de ChileSantiago, Chile; Universidad Científica del SurLima, Perú
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18
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Gonçalves RV, Novaes RD, Sarandy MM, Damasceno EM, da Matta SLP, de Gouveia NM, Freitas MB, Espindola FS. 5α-Dihydrotestosterone enhances wound healing in diabetic rats. Life Sci 2016; 152:67-75. [PMID: 27009546 DOI: 10.1016/j.lfs.2016.03.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/19/2016] [Accepted: 03/09/2016] [Indexed: 10/22/2022]
Abstract
UNLABELLED Wound healing involves a complex interaction between the cells, extracellular matrix and oxidative response. AIMS Analyze the effects of 5α-Dihydrotestosterone (5α-DTH) ointment in cutaneous wound healing by secondary intention in diabetic Wistar rats. MAIN METHODS Rats (302.23±26.23g, n=48) were maintained in cages with food and water ad libitum in accordance with the Guiding Principles in the Use of Animal Ethics Committee. Diabetes was induced by intraperitoneal injection of streptozotocin (60mg/kg). Three skin wounds (12mm diameter) were created on the animals' back, which were randomized into 6 groups according to the application received: VT group: Vehicle (lanolin), SA group: 0.9% saline solution, NC group: Non-diabetic, CP group: positive control (silver sulfadiazine 0001%), T1 group: Testosterone (10%), T2 group: Testosterone (20%) emulsified in lanolin. The applications were made daily within 21days, and tissues from different wounds were removed every 7days. KEY FINDINGS Both groups treated with testosterone (T1 and T2) showed a significantly higher proportion of type I and type III collagen fibers. Superoxide dismutase levels were significantly higher on days 7 and 14 in testosterone treated groups. Protein carbonyls and MDA were lower in both groups. SIGNIFICANCE We conclude that groups treated with 5α-DTH showed a better healing pattern with complete wound closure, and proved to have a positive effect on the morphology of the scar tissue as well as an antioxidant stimulating effect during secondhand intention skin wounds repair in diabetic rats.
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Affiliation(s)
| | - Rômulo D Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, MG, Brazil
| | - Mariáurea M Sarandy
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Eduardo M Damasceno
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Sérgio L P da Matta
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Neire M de Gouveia
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlandia, MG, Brazil
| | - Mariella B Freitas
- Department of Animal Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Foued S Espindola
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlandia, MG, Brazil
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