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Rodríguez-Santiago Y, Garay-Canales CA, Nava-Castro KE, Morales-Montor J. Sexual dimorphism in colorectal cancer: molecular mechanisms and treatment strategies. Biol Sex Differ 2024; 15:48. [PMID: 38867310 PMCID: PMC11170921 DOI: 10.1186/s13293-024-00623-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 05/26/2024] [Indexed: 06/14/2024] Open
Abstract
INTRODUCTION Sexual dimorphism significantly influences cancer incidence and prognosis. Notably, females exhibit a lower risk and favorable prognosis for non-reproductive cancers compared to males, a pattern observable beyond the scope of risk behaviors such as alcohol consumption and smoking. Colorectal cancer, ranking third in global prevalence and second in mortality, disproportionately affects men. Sex steroid hormones, particularly estrogens and androgens, play crucial roles in cancer progression, considering epidemiological in vivo and in vitro, in general estrogens imparting a protective effect in females and androgens correlating with an increasing risk of colorectal cancer development. MAIN BODY The hormonal impact on immune response is mediated by receptor interactions, resulting in heightened inflammation, modulation of NF-kB, and fostering an environment conducive to cancer progression and metastasis. These molecules also influence the enteric nervous system, that is a pivotal in neuromodulator release and intestinal neuron stimulation, also contributes to cancer development, as evidenced by nerve infiltration into tumors. Microbiota diversity further intersects with immune, hormonal, and neural mechanisms, influencing colorectal cancer dynamics. A comprehensive understanding of hormonal influences on colorectal cancer progression, coupled with the complex interplay between immune responses, microbiota diversity and neurotransmitter imbalances, underpins the development of more targeted and effective therapies. CONCLUSIONS Estrogens mitigate colorectal cancer risk by modulating anti-tumor immune responses, enhancing microbial diversity, and curbing the pro-tumor actions of the sympathetic and enteric nervous systems. Conversely, androgens escalate tumor growth by dampening anti-tumor immune activity, reducing microbial diversity, and facilitating the release of tumor-promoting factors by the nervous system. These findings hold significant potential for the strategic purposing of drugs to fine-tune the extensive impacts of sex hormones within the tumor microenvironment, promising advancements in colorectal cancer therapies.
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Affiliation(s)
- Yair Rodríguez-Santiago
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacán, Mexico City, 04510, México
- Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Edificio D, 1er piso, Circuito de Posgrados, Ciudad Universitaria, Ciudad de México, 04510, México
| | - Claudia Angelica Garay-Canales
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacán, Mexico City, 04510, México
| | - Karen Elizabeth Nava-Castro
- Grupo de Biología y Química Atmosféricas, Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México, Ciudad Universitaria, CDMX, 04510, México
| | - Jorge Morales-Montor
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Coyoacán, Mexico City, 04510, México.
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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] [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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Wadthaisong M, Wattanapermpool J, de Tombe PP, Bupha-Intr T. Suppression of myofilament cross-bridge kinetic in the heart of orchidectomized rats. Life Sci 2020; 261:118342. [PMID: 32853655 DOI: 10.1016/j.lfs.2020.118342] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/11/2020] [Accepted: 08/21/2020] [Indexed: 11/30/2022]
Abstract
AIMS The increased incidence of heart failure with reduced ejection fraction in men compared with women suggests that male sex hormones significantly impact myocardial contractile activation. This study aims to examine associations among molecular alterations, cellular modulations and in vivo cardiac contractile function upon deprivation of testicular hormones. MAIN METHODS Myocardial structure and functions were compared among sham-operated control and twelve-week orchidectomized (ORX) male rats with and without testosterone supplementation. KEY FINDINGS Echocardiography and pressure-volume relationships demonstrated a decreased left ventricular ejection fraction compared with sham-operated controls. The percentage of contractility reduction was generally similar to the decrease in tension development detected in both right ventricular trabeculae and skinned isolated left ventricular cardiomyocytes of ORX rats. Reductions in tension cost and the rate constant of tension redevelopment (ktr) in ORX samples suggested a decrease in the rate of cross-bridge formation, reflecting a reduced number of cross-bridges. Slow cross-bridge detachment in ORX rat hearts could result from a shift of myosin heavy chain isoforms towards a slower ATPase activity β-isoform and reductions in the phosphorylation levels of cardiac troponin I and myosin binding protein-C. All the changes in the ORX rat heart, including ejection fractions and myofilament protein expression and phosphorylation, were completed attenuated by a physiological dose of testosterone. SIGNIFICANCE Testosterone plays a critical role in regulating the mechanical and contractile dynamics of the heart. Deprivation of male sex hormones cause the loss of normal preserved cardiac contractile function leading to a high risk of severe cardiomyopathy progression.
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Affiliation(s)
- Munthana Wadthaisong
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Cell and Molecular Physiology, Loyola University Chicago Health Sciences Division, Maywood, IL, United States of America
| | | | - Pieter P de Tombe
- Department of Cell and Molecular Physiology, Loyola University Chicago Health Sciences Division, Maywood, IL, United States of America; Department of Physiology and Biophysics, University of Illinois at Chicago, Chicago, IL, United States of America
| | - Tepmanas Bupha-Intr
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand.
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Wilhelmson AS, Lantero Rodriguez M, Stubelius A, Fogelstrand P, Johansson I, Buechler MB, Lianoglou S, Kapoor VN, Johansson ME, Fagman JB, Duhlin A, Tripathi P, Camponeschi A, Porse BT, Rolink AG, Nissbrandt H, Turley SJ, Carlsten H, Mårtensson IL, Karlsson MCI, Tivesten Å. Testosterone is an endogenous regulator of BAFF and splenic B cell number. Nat Commun 2018; 9:2067. [PMID: 29802242 PMCID: PMC5970247 DOI: 10.1038/s41467-018-04408-0] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 04/26/2018] [Indexed: 12/15/2022] Open
Abstract
Testosterone deficiency in men is associated with increased risk for autoimmunity and increased B cell numbers through unknown mechanisms. Here we show that testosterone regulates the cytokine BAFF, an essential survival factor for B cells. Male mice lacking the androgen receptor have increased splenic B cell numbers, serum BAFF levels and splenic Baff mRNA. Testosterone deficiency by castration causes expansion of BAFF-producing fibroblastic reticular cells (FRCs) in spleen, which may be coupled to lower splenic noradrenaline levels in castrated males, as an α-adrenergic agonist decreases splenic FRC number in vitro. Antibody-mediated blockade of the BAFF receptor or treatment with the neurotoxin 6-hydroxydopamine revert the increased splenic B cell numbers induced by castration. Among healthy men, serum BAFF levels are higher in men with low testosterone. Our study uncovers a previously unrecognized regulation of BAFF by testosterone and raises important questions about BAFF in testosterone-mediated protection against autoimmunity. Testosterone deficiency is associated with autoimmunity and increased B cell numbers, but the underlying mechanism is unclear. Here the authors show that testosterone may modulate the production of B cell survival factor BAFF by fibroblastic reticular cells via regulation of splenic neurotransmitter levels.
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Affiliation(s)
- Anna S Wilhelmson
- Wallenberg Laboratory for Cardiovascular and Metabolic Research, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Bruna Stråket 16, SE-413 45, Gothenburg, Sweden.,The Finsen Laboratory, Rigshospitalet; Biotech Research and Innovation Centre (BRIC); Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Faculty of Health Sciences, University of Copenhagen, Ole Maaløesvej 5, DK-2200, Copenhagen N, Denmark
| | - Marta Lantero Rodriguez
- Wallenberg Laboratory for Cardiovascular and Metabolic Research, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Bruna Stråket 16, SE-413 45, Gothenburg, Sweden
| | - Alexandra Stubelius
- Center for Bone and Arthritis Research (CBAR), Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Vita Stråket 11, SE-413 45, Gothenburg, Sweden.,Center of Excellence in Nanomedicine and Engineering, University of California San Diego, 9500 Gilman Dr., La Jolla, CA, 92093, USA
| | - Per Fogelstrand
- Wallenberg Laboratory for Cardiovascular and Metabolic Research, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Bruna Stråket 16, SE-413 45, Gothenburg, Sweden
| | - Inger Johansson
- Wallenberg Laboratory for Cardiovascular and Metabolic Research, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Bruna Stråket 16, SE-413 45, Gothenburg, Sweden
| | - Matthew B Buechler
- Department of Cancer Immunology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Steve Lianoglou
- Department of Cancer Immunology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Varun N Kapoor
- Department of Cancer Immunology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Maria E Johansson
- Department of Physiology, Institute of Neuroscience and Physiology, University of Gothenburg, Box 432, SE-405 30, Gothenburg, Sweden
| | - Johan B Fagman
- Sahlgrenska Cancer Center, Department of Surgery, Institute of Clinical Sciences, University of Gothenburg, Box 100, SE-405 30, Gothenburg, Sweden
| | - Amanda Duhlin
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Prabhanshu Tripathi
- Centre for Human Microbial Ecology, Translational Health Science and Technology Institute, NCR Biotech Science Cluster, 3rd Milestone Faridabad-Gurgaon Expressway, Faridabad, 121001, Haryana, India
| | - Alessandro Camponeschi
- Department of Rheumatology and Inflammation Research, Institute of Medicine, University of Gothenburg, Box 480, SE-405 30, Gothenburg, Sweden
| | - Bo T Porse
- The Finsen Laboratory, Rigshospitalet; Biotech Research and Innovation Centre (BRIC); Novo Nordisk Foundation Center for Stem Cell Biology (DanStem), Faculty of Health Sciences, University of Copenhagen, Ole Maaløesvej 5, DK-2200, Copenhagen N, Denmark
| | - Antonius G Rolink
- Department of Biomedicine, Developmental and Molecular Immunology, University of Basel, Mattenstrasse 28, 4058, Basel, Switzerland
| | - Hans Nissbrandt
- Department of Pharmacology, Institute of Neuroscience and Physiology, University of Gothenburg, Box 431, SE-405 30, Gothenburg, Sweden
| | - Shannon J Turley
- Department of Cancer Immunology, Genentech, 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Hans Carlsten
- Center for Bone and Arthritis Research (CBAR), Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Vita Stråket 11, SE-413 45, Gothenburg, Sweden
| | - Inga-Lill Mårtensson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, University of Gothenburg, Box 480, SE-405 30, Gothenburg, Sweden
| | - Mikael C I Karlsson
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institute, SE-171 77, Stockholm, Sweden
| | - Åsa Tivesten
- Wallenberg Laboratory for Cardiovascular and Metabolic Research, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Bruna Stråket 16, SE-413 45, Gothenburg, Sweden.
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Latorzeff I, Ploussard G, Guillotreau J, Jonca F, Labarthe P, Rollin G, Beauval JB, Pathak A. [Cardiovascular risks with prostate cancer hormonal treatment: rationale for a department of oncocardiology]. Cancer Radiother 2016; 20:405-10. [PMID: 27344534 DOI: 10.1016/j.canrad.2016.02.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 02/19/2016] [Accepted: 02/24/2016] [Indexed: 11/16/2022]
Abstract
Prostate cancer, the most frequent cancer in man, is an adenocarcinoma sensible to chemical castration in more than 80% of cases due to its hormonal dependency. Androgen deprivation is the treatment for advanced cancer and can be associated with radiotherapy locally or in locally advanced situations. Multidisciplinary therapeutic choice depends on patient age and co-morbidities and clinical stage. The impact of hormonal treatment confers varied side effects and cardiovascular effects are now better known. Responsible mechanisms of this cardiotoxicity are at the same time direct but also indirect by metabolic thermogenic effects. Analysis of these clinical or biological effects, their correlations to the used type of hormonal treatment and the possible precautions of prescription will be detailed in this analysis of the literature. The collaboration of the oncologist or the urologist with the cardiologist becomes necessary and the existence of a unit of oncocardiology could improve the evaluation of the risk-benefit balance and the tolerance of the treatment.
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Affiliation(s)
- I Latorzeff
- Groupe Oncorad-Garonne, service d'oncologie-radiothérapie, clinique Pasteur, bâtiment Atrium, 1, rue de la Petite-Vitesse, 31300 Toulouse, France; Groupe Oncorad-Garonne, unité d'oncocardiologie, clinique Pasteur, bâtiment Atrium, 1, rue de la Petite-Vitesse, 31300 Toulouse, France.
| | - G Ploussard
- Service d'urologie, clinique Saint-Jean-du-Languedoc, 20, route de Revel, 31400 Toulouse, France
| | - J Guillotreau
- Service d'urologie, clinique Pasteur, 45, avenue de Lombez, 31300 Toulouse, France
| | - F Jonca
- Service d'urologie, clinique Ambroise-Paré, 387, route de Saint-Simon, 31100 Toulouse, France
| | - P Labarthe
- Service d'urologie, clinique des Cèdres, château d'Alliez, 31700 Cornebarrieu, France
| | - G Rollin
- Service d'urologie, clinique d'Occitanie, 20, avenue Bernard-IV, 31600 Muret, France
| | - J-B Beauval
- Service d'urologie, andrologie et transplantation rénale, CHU Rangueil, 1, avenue du Professeur-Jean-Poulhès, TSA 50032, 31059 Toulouse cedex 9, France
| | - A Pathak
- Groupe Oncorad-Garonne, unité d'oncocardiologie, clinique Pasteur, bâtiment Atrium, 1, rue de la Petite-Vitesse, 31300 Toulouse, France; Service de cardiologie, clinique Pasteur, 45, avenue de Lombez, 31300 Toulouse, France
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6
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Testosterone Replacement Modulates Cardiac Metabolic Remodeling after Myocardial Infarction by Upregulating PPARα. PPAR Res 2016; 2016:4518754. [PMID: 27413362 PMCID: PMC4927959 DOI: 10.1155/2016/4518754] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/17/2016] [Accepted: 05/24/2016] [Indexed: 01/04/2023] Open
Abstract
Despite the importance of testosterone as a metabolic hormone, its effects on myocardial metabolism in the ischemic heart remain unclear. Myocardial ischemia leads to metabolic remodeling, ultimately resulting in ATP deficiency and cardiac dysfunction. In the present study, the effects of testosterone replacement on the ischemic heart were assessed in a castrated rat myocardial infarction model established by ligating the left anterior descending coronary artery 2 weeks after castration. The results of real-time PCR and Western blot analyses showed that peroxisome proliferator-activated receptor α (PPARα) decreased in the ischemic myocardium of castrated rats, compared with the sham-castration group, and the mRNA expression of genes involved in fatty acid metabolism (the fatty acid translocase CD36, carnitine palmitoyltransferase I, and medium-chain acyl-CoA dehydrogenase) and glucose transporter-4 also decreased. A decline in ATP levels in the castrated rats was accompanied by increased cardiomyocyte apoptosis and fibrosis and impaired cardiac function, compared with the sham-castration group, and these detrimental effects were reversed by testosterone replacement. Taken together, our findings suggest that testosterone can modulate myocardial metabolic remodeling by upregulating PPARα after myocardial infarction, exerting a protective effect on cardiac function.
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Santos MRD, Sayegh ALC, Groehs RVR, Fonseca G, Trombetta IC, Barretto ACP, Arap MA, Negrão CE, Middlekauff HR, Alves MJDNN. Testosterone deficiency increases hospital readmission and mortality rates in male patients with heart failure. Arq Bras Cardiol 2015. [PMID: 26200897 PMCID: PMC4592174 DOI: 10.5935/abc.20150078] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background Testosterone deficiency in patients with heart failure (HF) is associated with
decreased exercise capacity and mortality; however, its impact on hospital
readmission rate is uncertain. Furthermore, the relationship between testosterone
deficiency and sympathetic activation is unknown. Objective We investigated the role of testosterone level on hospital readmission and
mortality rates as well as sympathetic nerve activity in patients with HF. Methods Total testosterone (TT) and free testosterone (FT) were measured in 110
hospitalized male patients with a left ventricular ejection fraction < 45% and
New York Heart Association classification IV. The patients were placed into low
testosterone (LT; n = 66) and normal testosterone (NT; n = 44) groups.
Hypogonadism was defined as TT < 300 ng/dL and FT < 131 pmol/L. Muscle
sympathetic nerve activity (MSNA) was recorded by microneurography in a
subpopulation of 27 patients. Results Length of hospital stay was longer in the LT group compared to in the NT group (37
± 4 vs. 25 ± 4 days; p = 0.008). Similarly, the cumulative hazard of readmission
within 1 year was greater in the LT group compared to in the NT group (44% vs.
22%, p = 0.001). In the single-predictor analysis, TT (hazard ratio [HR], 2.77;
95% confidence interval [CI], 1.58–4.85; p = 0.02) predicted hospital readmission
within 90 days. In addition, TT (HR, 4.65; 95% CI, 2.67–8.10; p = 0.009) and
readmission within 90 days (HR, 3.27; 95% CI, 1.23–8.69; p = 0.02) predicted
increased mortality. Neurohumoral activation, as estimated by MSNA, was
significantly higher in the LT group compared to in the NT group (65 ± 3 vs. 51 ±
4 bursts/100 heart beats; p < 0.001). Conclusion These results support the concept that LT is an independent risk factor for
hospital readmission within 90 days and increased mortality in patients with HF.
Furthermore, increased MSNA was observed in patients with LT.
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Affiliation(s)
| | | | | | - Guilherme Fonseca
- Instituto do Coração, Faculdade de Medicina, Universidade de São Paulo, BR
| | | | | | | | | | - Holly R Middlekauff
- Division of Cardiology, David Geffen School of Medicine, University of California, US
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Chang CC, Chang HA, Chen TY, Fang WH, Huang SY. Brain-derived neurotrophic factor (BDNF) Val66Met polymorphism affects sympathetic tone in a gender-specific way. Psychoneuroendocrinology 2014; 47:17-25. [PMID: 25001952 DOI: 10.1016/j.psyneuen.2014.04.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 04/24/2014] [Accepted: 04/25/2014] [Indexed: 01/19/2023]
Abstract
The Val/Val genotype of the brain-derived neurotrophic factor (BDNF) polymorphism (Val66Met) has been reported to affect human anxiety-related phenotypes. Substantial research has demonstrated that anxiety is associated with sympathetic activation, while sex steroid hormones have been shown to exert differential actions in regulating BDNF expression. Thus, we examined whether the BDNF variant modulates autonomic function in a gender-dependent manner. From 708 adults initially screened for medical and psychiatric illnesses, a final cohort of 583 drug-free healthy Han Chinese (355 males, 228 females; age 34.43±8.42 years) was recruited for BDNF genotyping (Val/Val: 136, 23.3%, Val/Met: 294, 50.4%, and Met/Met: 153, 26.2%). Time- and frequency-domain analyses of heart rate variability (HRV) were used to assess autonomic outflow to the heart. Significant genotype-by-gender interaction effects were found on HRV indices. Even after adjusting for possible confounders, male participants bearing the Val/Val genotype had significant increases in low frequency (LF), LF% and LF/high frequency (HF) ratio, indicating altered sympathovagal balance with increased sympathetic modulation, compared to male Met/Met homozygotes. Females, however, showed an opposite but non-significant pattern. These results suggest that the studied BDNF polymorphism is associated with sympathetic control in a gender-specific way. The findings here support the view that male subjects with the Val/Val genotype have increased risk of anxiety by association with sympathetic activation.
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Affiliation(s)
- Chuan-Chia Chang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Hsin-An Chang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Tien-Yu Chen
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Wen-Hui Fang
- Department of Family and Community Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - San-Yuan Huang
- Department of Psychiatry, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan; Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan.
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Pilipović I, Radojević K, Kosec D, Perišić Nanut M, Stojić-Vukanić Z, Arsenović-Ranin N, Leposavić G. Gonadal hormone dependent developmental plasticity of catecholamine:β2-adrenoceptor signaling complex in male rat thymus: Putative implications for thymopoiesis. J Neuroimmunol 2013; 265:20-35. [DOI: 10.1016/j.jneuroim.2013.09.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 09/26/2013] [Accepted: 09/30/2013] [Indexed: 01/27/2023]
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Li S, Zhang L, Guo Y, Li X. Relationship of cardiac sympathetic nerve innervation and excitability to cardiac hypertrophy in very elderly male hypertensive patients. High Blood Press Cardiovasc Prev 2013; 20:115-21. [PMID: 23918154 DOI: 10.1007/s40292-013-0018-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 04/08/2013] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Our study aimed to disclose the relationship of cardiac sympathetic nerve innervation and excitability to myocardial hypertrophy in very old elderly male hypertensive patients with low serum testosterone level. METHODS A total of 80 elderly male hypertensive patients aged from 80 to 95 years were recruited. Heart rate variability is determined by 24 h dynamic electrocardiogram and heart rate variability analysis system. Cardiac function and left ventricular mass index were determined using color Doppler ultrasound. RESULTS Standard deviation of all normal sinus R-R intervals over 24 h (SDNN) significantly decreased in hypertensive cardiac hypertrophy patients as compared with those without cardiac hypertrophy. SDANN and Standard deviation of the average normal sinus R-R intervals for all 5-min segment index, time-domain index reflecting sympathetic nerve tension, obviously decreased and LFnu and LFnu/HFnu, frequency-domain index representing sympathetic nerve excitability, significantly increased in hypertensive cardiac hypertrophy patients as compared with those without cardiac hypertrophy. Myocardial norepinephrine content significantly increased while tyrosine hydroxylase expression significantly lowered in hypertensive cardiac hypertrophy patients, and a negative correlation between myocardial tyrosine hydroxylase expression and myocardial norepinephrine content was present. Serum total testosterone level decreased in hypertensive cardiac hypertrophy patients and was an independent risk factor for the increase in myocardial norepinephrine content and decrease in tyrosine hydroxylase expression. CONCLUSIONS These data confirm that cardiac sympathetic nerve hypoinnervation and relative increase in cardiac sympathetic nerve excitability are closely related to cardiac hypertrophy in very old hypertensive patients. A lower serum total testosterone level was the independent risk factor of cardiac sympathetic nerve hypoinnervation and relative increase in excitability in very old male hypertensive patients.
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Affiliation(s)
- Shijun Li
- Division of Geriatric Cardiology, Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
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Chen Y, Fu L, Han Y, Teng Y, Sun J, Xie R, Cao J. Testosterone replacement therapy promotes angiogenesis after acute myocardial infarction by enhancing expression of cytokines HIF-1a, SDF-1a and VEGF. Eur J Pharmacol 2012; 684:116-24. [DOI: 10.1016/j.ejphar.2012.03.032] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 03/09/2012] [Accepted: 03/22/2012] [Indexed: 12/31/2022]
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Chua S, Wang HL, Lin YC, Wu CH, Tsai TH, Chang LT, Kao YH, Yen CH, Yip HK, Sun CK. Enhanced Expression of Plasminogen Activator Inhibitor May Prevent Cardiac Rupture in Female and Castrated Mice After Myocardial Infarction. ACTA ACUST UNITED AC 2011; 8:239-51. [PMID: 21664194 DOI: 10.1016/j.genm.2011.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2010] [Revised: 04/27/2011] [Accepted: 05/17/2011] [Indexed: 01/28/2023]
Affiliation(s)
- Sarah Chua
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Taiwan
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13
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Sun J, Fu L, Tang X, Han Y, Ma D, Cao J, Kang N, Ji H. Testosterone modulation of cardiac β-adrenergic signals in a rat model of heart failure. Gen Comp Endocrinol 2011; 172:518-25. [PMID: 21549119 DOI: 10.1016/j.ygcen.2011.04.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2010] [Revised: 03/16/2011] [Accepted: 04/20/2011] [Indexed: 01/08/2023]
Abstract
In this study, we examined the effects of castration and testosterone replacement on β-adrenoceptor and G protein expression in rats subjected to doxorubicin-induced heart failure. Five groups were included in this report: control, sham-castration with heart failure, castration with heart failure, castration+testosterone replacement with heart failure and castration+testosterone replacement and flutamide with heart failure. At 4 weeks post-treatment, echocardiography, hemodynamics and histopathology were assessed. Castration led to a further deterioration in myocardial performance, apoptosis and fibrosis, while testosterone replacement ameliorated these effects. Data obtained from Western blots revealed that testosterone upregulated the expression of β(2)-adrenoceptor, Gs, Gi(2) and bcl2 levels, downregulated the expression of β(3)-adrenoceptor, Gi(3) and GRK2 levels, and did not modify the expression of β(1)-adrenoceptor levels in the hearts of castrated rats subjected to doxorubicin-induced heart failure. Analyses of serum 17β-estradiol concentrations test confirmed that these effects of testosterone were exerted through the androgen pathway. Thus our findings suggest that testosterone may have beneficial effects for male heart failure patients with androgen deficiency and this protection involves modulation of the cardiac β-adrenergic system.
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Affiliation(s)
- Junfeng Sun
- Department of Cardiovascular Medicine, First Affiliated Hospital, Harbin Medical University, Harbin, China
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Abstract
PURPOSE OF REVIEW Chronic heart failure (CHF) is a common condition with significant morbidity despite optimal medical therapy. Standard therapy involves inhibiting the maladaptive changes of metabolism and neuro-hormones that characterize the syndrome of CHF. Anabolic deficiency is a major component of the CHF syndrome and testosterone replacement therapy has been subject to recent trials. RECENT FINDINGS The recent literature shows that physiological testosterone replacement therapy leads to modest improvements in voluntary muscle strength, lean muscle mass, endurance and positive effects on neuro-muscular and baro-receptor reflexes. Long-term efficacy and safety remain unstudied at present. SUMMARY Testosterone replacement therapy appears to improve metabolism and endurance in patients with CHF; further trials will be necessary before widespread use. Physicians who regularly treat patients with CHF may consider testosterone therapy but it is likely that they will require the advice and support from endocrine specialists.
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Affiliation(s)
- Chris J Malkin
- Department of Cardiology Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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