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Meregildo-Rodriguez ED, Asmat-Rubio MG, Bardales-Zuta VH, Vásquez-Tirado GA. Effect of calcium-channel blockers on the risk of active tuberculosis and mortality: systematic review and meta-analysis. Front Pharmacol 2024; 15:1298919. [PMID: 38303987 PMCID: PMC10830796 DOI: 10.3389/fphar.2024.1298919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/05/2024] [Indexed: 02/03/2024] Open
Abstract
Introduction: Recent studies suggest that calcium channel blockers (CCBs) could reduce the risk of active tuberculosis and improve clinical outcomes. We aimed to synthesize the evidence regarding the effect of CCBs on the risk of developing active tuberculosis and mortality. Methods: We systematically searched for observational studies and clinical trials published in six databases until 31 August 2023, following a PECO/PICO strategy. Results: We included eight observational studies, 4,020,830 patients, among whom 241,761 had diabetes mellitus and 30,397 had active tuberculosis. According to our results, CCBs reduce the risk of developing active tuberculosis by 29% (RR 0.71; 95% CI 0.67-0.75) in patients with and without diabetes mellitus. However, CCBs do not show any benefit in terms of tuberculosis-related mortality (RR 1.00; 95% CI 0.98-1.02). For both outcomes, no statistical heterogeneity was found (I2 = 0, p > 0.10). This protective effect of CCBs on the risk of active tuberculosis remained independent of the type of patient (with diabetes mellitus vs. general population) or the class of CCB administered (DHP-CCB vs. non-DHP-CCB) (test for subgroup differences I2 = 0, p > 0.10). However, this beneficial effect was more significant among the general population (RR 0.70; 95% CI 0.66-0.74) compared to patients with diabetes mellitus (RR 0.72; 95% CI 0.61-0.86) and among those patients treated with DHP-CCBs (RR 0.69; 95% CI 0.63-0.74) compared to patients treated with non-DHP-CCBs (RR 0.72; 95% CI 0.67-0.78). Conclusion: CCBs may reduce the risk of active TB in patients with diabetes and the general population. On the contrary, CCBs do not seem to have a protective effect on tuberculosis-related mortality. However, more evidence is still needed. We recommend developing clinical trials to verify these findings, including more diverse populations. Systematic Review Registration: [https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=352129].
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Xi X, Wu Q, Wang X, Sun X, Yu G, Jiang L, Wu H, Zhang L. The association between iron metabolism with the change of blood pressure and risk of hypertension: A large cross-sectional study. J Trace Elem Med Biol 2023; 79:127193. [PMID: 37269648 DOI: 10.1016/j.jtemb.2023.127193] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 05/01/2023] [Accepted: 05/02/2023] [Indexed: 06/05/2023]
Abstract
BACKGROUND The relationship between iron metabolism and variations in blood pressure and hypertension risk is still not clear. This study aimed to determine whether iron metabolism is associated with changes in blood pressure and hypertension prevalence in the general United States population. METHODS The National Health and Nutrition Examination Survey (NAHNES) database contains data on 116876 Americans from 1999 to 2020 years. Data from the NHANES database were used to examine the relationships between iron metabolism (serum iron [SI], serum ferritin [SF], and soluble transferrin receptor [sTfR]) and changes in blood pressure and hypertension prevalence. Generalized linear models and restricted cubic spline (RCS) plot curves were used to estimate the relationship between iron metabolism and hypertension. Further, generalized additive models with smooth functions were used to identify the relationship between iron metabolism and blood pressure. Finally, a stratified subgroup analysis was performed. RESULTS A total of 6710 participants were included in our analysis. The RCS plot showed a linear relationship between SI, as well as sTfR, and hypertension prevalence. SF and hypertension prevalence were associated in a J-shape. In addition, the relationship between SI and systolic blood pressure (SBP) and diastolic blood pressure (DBP) decreased initially and then increased. A correlation between SF, SBP, and DBP first decreased, then increased, and finally decreased. A positive linear correlation existed between sTfR and SBP, but it increased and then decreased with DBP. CONCLUSION The correlation between SF and hypertension prevalence displayed a J-curve. In contrast, the correlation between SI, as well as sTfR, and hypertension risk was negative and positive, respectively.
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Affiliation(s)
- Xiaolong Xi
- Department of Critical Care Medicine, Shaoxing People's Hospital, No.568 Zhong Xing Road, Shaoxing, Zhejiang, 312000, China
| | - Qiong Wu
- Department of Cardiology, Kunshan Hospital of Traditional Chinese Medicine, Suzhou, Jiangsu, 215300, China
| | - Xiaotong Wang
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221000, China
| | - Xuedong Sun
- Department of Critical Care Medicine, Shaoxing People's Hospital, No.568 Zhong Xing Road, Shaoxing, Zhejiang, 312000, China
| | - Guofeng Yu
- Department of Critical Care Medicine, Shaoxing People's Hospital, No.568 Zhong Xing Road, Shaoxing, Zhejiang, 312000, China
| | - Lixian Jiang
- Department of Cardiology, Wuxi No.2 People's Hospital, Wuxi Clinical College of Nanjing Medical University, Wuxi, Jiangsu, 214000, China
| | - Hanzhi Wu
- Department of Cardiology, Wuxi No.2 People's Hospital, Wuxi Clinical College of Nanjing Medical University, Wuxi, Jiangsu, 214000, China
| | - Lizhu Zhang
- Department of Cardiology, Jiangnan University Medical Center, No.68 Zhongshan Road, Wuxi, Jiangsu, 214001, China.
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Szklarz M, Gontarz-Nowak K, Matuszewski W, Bandurska-Stankiewicz E. Can Iron Play a Crucial Role in Maintaining Cardiovascular Health in the 21st Century? INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11990. [PMID: 36231287 PMCID: PMC9565681 DOI: 10.3390/ijerph191911990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/01/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
In the 21st century the heart is facing more and more challenges so it should be brave and iron to meet these challenges. We are living in the era of the COVID-19 pandemic, population aging, prevalent obesity, diabetes and autoimmune diseases, environmental pollution, mass migrations and new potential pandemic threats. In our article we showed sophisticated and complex regulations of iron metabolism. We discussed the impact of iron metabolism on heart diseases, treatment of heart failure, diabetes and obesity. We faced the problems of constant stress, climate change, environmental pollution, migrations and epidemics and showed that iron is really essential for heart metabolism in the 21st century.
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Distribution and Associated Factors of Hepatic Iron-A Population-Based Imaging Study. Metabolites 2021; 11:metabo11120871. [PMID: 34940629 PMCID: PMC8705957 DOI: 10.3390/metabo11120871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/09/2021] [Accepted: 12/11/2021] [Indexed: 11/17/2022] Open
Abstract
Hepatic iron overload can cause severe organ damage; therefore, an early diagnosis and the identification of potential risk factors is crucial. We aimed to investigate the sex-specific distribution of hepatic iron content (HIC) in a population-based cohort and identify relevant associated factors from a panel of markers. We analyzed N = 353 participants from a cross-sectional sample (KORA FF4) who underwent whole-body magnetic resonance imaging. HIC was assessed by single-voxel spectroscopy with a high-speed T2-corrected multi-echo technique. A large panel of markers, including anthropometric, genetic, and laboratory values, as well as behavioral risk factors were assessed. Relevant factors associated with HIC were identified by variable selection based on LASSO regression with bootstrap resampling. HIC in the study sample (mean age at examination: 56.0 years, 58.4% men) was significantly lower in women (mean ± SD: 39.2 ± 4.1 s-1) than in men (41.8 ± 4.7 s-1, p < 0.001). Relevant factors associated with HIC were HbA1c as well as prediabetes for men and visceral adipose tissue as well as age for women. Hepatic fat, alcohol consumption, and genetic risk score for iron levels were associated with HIC in both sexes. In conclusion, there are sex-specific associations of HIC with markers of body composition, glucose metabolism, and alcohol consumption.
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Lee CC, Lee MTG, Hsu WT, Park JY, Porta L, Liu MA, Chen SC, Chang SC. Use of Calcium Channel Blockers and Risk of Active Tuberculosis Disease: A Population-Based Analysis. Hypertension 2020; 77:328-337. [PMID: 33307850 DOI: 10.1161/hypertensionaha.120.15534] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Calcium channel blockers (CCBs) are known to reduce the availability of iron-an important mineral for intracellular pathogens. Nonetheless, whether the use of CCBs modifies the risk of active tuberculosis in the clinical setting remains unclear. To determine whether CCBs may modify the risk of active tuberculosis disease, we conducted a nested case-control study using the National Health Insurance Research Database of Taiwan between January 1999 and December 2011. Conditional logistic regression and disease risk score adjustment were used to calculate the risk of active tuberculosis disease associated with CCB use. Subgroup analyses investigated the effect of different types of CCBs and potential effect modification in different subpopulations. A total of 8164 new active tuberculosis cases and 816 400 controls were examined. Use of CCBs was associated with a 32% decrease in the risk of active tuberculosis (relative risk [RR], 0.68 [95% CI, 0.58-0.78]) after adjustment with disease risk score. Compared with nonuse of CCBs, the use of dihydropyridine CCBs was associated with a lower risk of tuberculosis (RR, 0.63 [95% CI, 0.53-0.79]) than nondihydropyridine CCBs (RR, 0.73 [95% CI, 0.57-0.94]). In contrast, use of β-blockers (RR, 0.99 [95% CI, 0.83-1.12]) or loop diuretics (RR, 0.88 [95% CI, 0.62-1.26]) was not associated with lower risk of tuberculosis. In subgroup analyses, the risk of tuberculosis associated with the use of CCBs was similar among patients with heart failure or cerebrovascular diseases. Our study confirms that use of dihydropyridine CCBs decreases the risk of active tuberculosis.
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Affiliation(s)
- Chien-Chang Lee
- Department of Emergency Medicine (C.-C.L., M.-t.G.L., S.-C. Chen), National Taiwan University Hospital, Taipei.,Center of Intelligent Healthcare, National Taiwan University Hospital, Taipei (C.-C.L.)
| | - Meng-Tse Gabriel Lee
- Department of Emergency Medicine (C.-C.L., M.-t.G.L., S.-C. Chen), National Taiwan University Hospital, Taipei
| | - Wan-Ting Hsu
- Department of Epidemiology (W.-T.H.), Harvard TH Chan School of Public Health, Boston, MA
| | - James Yeongjun Park
- Department of Biostatistics (J.Y.P.), Harvard TH Chan School of Public Health, Boston, MA
| | - Lorenzo Porta
- Department of Emergency Medicine, School of Medicine and Surgery, Università degli studi di Milano Bicocca, Italy (L.P.)
| | - Michael A Liu
- Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI (M.A.L.)
| | - Shyr-Chyr Chen
- Department of Emergency Medicine (C.-C.L., M.-t.G.L., S.-C. Chen), National Taiwan University Hospital, Taipei
| | - Shan-Chwen Chang
- Division of Infection, Department of Internal Medicine (S.-C. Chang), National Taiwan University Hospital, Taipei
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The Influence of Cardiovascular Medications on Iron Metabolism in Patients with Heart Failure. ACTA ACUST UNITED AC 2019; 55:medicina55070329. [PMID: 31269687 PMCID: PMC6681074 DOI: 10.3390/medicina55070329] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 06/16/2019] [Accepted: 06/27/2019] [Indexed: 02/07/2023]
Abstract
Background and objectives: The etiology of anemia associated with heart failure is not fully understood, but there are data suggesting the involvement of multiple mechanisms, including various drug therapies used in patients with heart failure. Our primary objective was to evaluate the impact of beta blockers, angiotensin-converting enzyme inhibitors, and calcium-channel blockers on iron metabolism in patients with heart failure. Materials and Methods: This was a prospective observational study that included patients diagnosed with heart failure and iron deficiency (defined by ferritin <100 μg/L, or 100-300 μg/L with transferrin saturation <20%). Patients with anemia secondary to a known cause were excluded. Results: We found a statistically significant correlation between beta-blocker treatment and ferritin values (p = 0.02). Iron, hemoglobin, and hematocrit levels were significantly lower in the patients using calcium-channel blockers than those who were not. We also found a statistically significant indirect correlation (p = 0.04) between the use of angiotensin-converting enzyme inhibitors and hematocrit levels. Conclusion: The contribution of our study arises from the additional data regarding the drug-induced etiology of iron deficiency. Practitioners should be aware of the potential impact of therapeutic recommendations and this should imply a close monitoring of the biochemical parameters of iron deficiency in this category of patients.
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Suliburska J, Skrypnik K, Szulińska M, Kupsz J, Markuszewski L, Bogdański P. Diuretics, Ca-Antagonists, and Angiotensin-Converting Enzyme Inhibitors Affect Zinc Status in Hypertensive Patients on Monotherapy: A Randomized Trial. Nutrients 2018; 10:nu10091284. [PMID: 30208601 PMCID: PMC6164079 DOI: 10.3390/nu10091284] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 08/29/2018] [Accepted: 09/09/2018] [Indexed: 02/07/2023] Open
Abstract
Background: Antihypertensive drugs affect mineral metabolism, inflammation, and the oxidative state. The aim of this study was to evaluate the effects of antihypertensive monopharmacotherapy with diuretics, β-blockers, calcium antagonists (Ca-antagonists), angiotensin-converting enzyme inhibitors (ACE-I), and angiotensin II receptor antagonists (ARBs) on zinc (Zn), iron (Fe), and copper (Cu) status, parameters of oxidative and inflammatory states, and glucose and lipid metabolism in patients with newly diagnosed primary arterial hypertension (AH). Methods: Ninety-eight hypertensive subjects received diuretics, β-blockers, Ca-antagonists, ACE-I, or ARB for three months. Zn, Fe, and Cu concentrations were determined in blood, urine, and hair. Results: A decrease in zinc serum and erythrocyte concentration and an increase in zinc urine concentration were registered after diuretic administration. Ca-antagonists led to a decrease in erythrocyte zinc concentration. A decrease in serum zinc concentration was observed after ACE-I. A decrease in triglyceride serum concentration was noted after ACE-I therapy, and a decrease in tumor necrosis factor-α serum concentration was seen following administration of Ca-antagonists. Hypotensive drugs led to decreases in catalase and superoxide dismutase serum concentrations. Conclusions: Three-months of monotherapy with diuretics, Ca-antagonists, or ACE-I impairs zinc status in patients with newly diagnosed primary AH. Antihypertensive monopharmacotherapy and zinc metabolism alterations affect lipid metabolism, the oxidative state, and the inflammatory state.
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Affiliation(s)
- Joanna Suliburska
- Institute of Human Nutrition and Dietetics, Poznan University of Life Sciences, Wojska Polskiego St. 31, 60-624 Poznań, Poland.
| | - Katarzyna Skrypnik
- Institute of Human Nutrition and Dietetics, Poznan University of Life Sciences, Wojska Polskiego St. 31, 60-624 Poznań, Poland.
| | - Monika Szulińska
- Department of Treatment of Obesity, Metabolic Disorders and Clinical Dietetics, Poznan University of Medical Sciences, Szamarzewskiego St. 82/84, 60-569 Poznań, Poland.
| | - Justyna Kupsz
- Department of Physiology, Poznan University of Medical Sciences, Święcickiego St. 6, 61-781 Poznań, Poland.
| | - Leszek Markuszewski
- Department of Endocrinology and Metabolic Diseases, Polish Mother's Memorial Hospital-Research Institute, 281/289 Rzgowska St., 93-338 Łódź, Poland.
| | - Paweł Bogdański
- Department of Treatment of Obesity, Metabolic Disorders and Clinical Dietetics, Poznan University of Medical Sciences, Szamarzewskiego St. 82/84, 60-569 Poznań, Poland.
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Mohammadifard N, Humphries KH, Gotay C, Mena-Sánchez G, Salas-Salvadó J, Esmaillzadeh A, Ignaszewski A, Sarrafzadegan N. Trace minerals intake: Risks and benefits for cardiovascular health. Crit Rev Food Sci Nutr 2017; 59:1334-1346. [PMID: 29236516 DOI: 10.1080/10408398.2017.1406332] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Minerals play a major role in regulating cardiovascular function. Imbalances in electrolyte minerals are frequent and potentially hazardous occurrences that may lead to the development of cardiovascular diseases (CVDs). Transition metals, such as iron, zinc, copper and selenium, play a major role in cell metabolism. However, there is controversy over the effects of dietary and supplemental intake of these metals on cardiovascular risk factors and events. Since their pro-oxidant or antioxidant functions can have different effects on cardiovascular health. While deficiency of these trace elements can cause cardiovascular dysfunction, several studies have also shown a positive association between metal serum levels and cardiovascular risk factors and events. Thus, a J- or U-shaped relationship between the transition minerals and cardiovascular events has been proposed. Given the existing controversies, large, well-designed, long-term, randomized clinical trials are required to better examine the effects of trace mineral intake on cardiovascular events and all-cause mortality in the general population. In this review, we discuss the role of dietary and/or supplemental iron, copper, zinc, and selenium on cardiovascular health. We will also clarify their clinical applications, benefits, and harms in CVDs prevention.
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Affiliation(s)
- Noushin Mohammadifard
- a Hypertension Research Center , Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan , Iran.,b Interventional Cardiology Research Center , Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Karin H Humphries
- c Women's Cardiovascular Health , Department of Medicine, The University of British Columbia , Vancouver , Canada
| | - Carolyn Gotay
- d Centre of Excellence in Cancer Prevention, Faculty of Medicine, School of Population and Public Health, The University of British Columbia , Vancouver , Canada
| | - Guillermo Mena-Sánchez
- e Human Nutrition Unit , Department of Biochemistry & Biotechnology , IISPV, School of Medicine, Rovira i Virgili University, and CIBER Obesity and Nutrition , Reus , Spain
| | - Jordi Salas-Salvadó
- e Human Nutrition Unit , Department of Biochemistry & Biotechnology , IISPV, School of Medicine, Rovira i Virgili University, and CIBER Obesity and Nutrition , Reus , Spain
| | - Ahmad Esmaillzadeh
- f Obesity and Eating Habits Research Center , Endocrinology and Metabolism Molecular, Cellular Sciences Institute, Tehran University of Medical Sciences , Tehran , Iran.,g Department of Community Nutrition , School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences , Tehran , Iran.,h Department of Community Nutrition , School of Nutrition and Food Science, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Andrew Ignaszewski
- i Division of Cardiology, Faculty of Medicine, The University of British Columbia , Vancouver , Canada
| | - Nizal Sarrafzadegan
- j Isfahan Cardiovascular Research Center , Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan , Iran
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Wijarnpreecha K, Kumfu S, Chattipakorn SC, Chattipakorn N. Cardiomyopathy Associated with Iron Overload: How Does Iron Enter Myocytes and What are the Implications for Pharmacological Therapy? Hemoglobin 2015; 39:9-17. [DOI: 10.3109/03630269.2014.987869] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Li B, Lin W, Lin N, Dong X, Liu L. Study of the correlation between serum ferritin levels and the aggregation of metabolic disorders in non-diabetic elderly patients. Exp Ther Med 2014; 7:1671-1676. [PMID: 24926364 PMCID: PMC4043604 DOI: 10.3892/etm.2014.1668] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 03/25/2014] [Indexed: 12/12/2022] Open
Abstract
The present study aimed to explore the correlation between serum ferritin (SF) levels and the aggregation of metabolic disorders in non-diabetic elderly patients. A total of 2,600 patients were enrolled in the study. Various parameters, including blood pressure (BP), height, weight, lipid profiles, blood glucose (BG), body mass index (BMI), fasting insulin (FINS), serum uric acid (SUA), the urinary albumin/creatinine ratio (UACR) and SF levels were measured. A homeostatic model was used to evaluate insulin resistance (HOMA-IR) and β-cell function (HOMA-β). The quantitative insulin sensitivity check index (QUICKI) and disposition index (DI) were calculated. The QUICKI and DI decreased significantly and other parameters increased significantly when the number of metabolic disorders increased. Patients with high triglycerides (TG), high total cholesterol (TC), high SUA and obesity demonstrated higher SF levels than those with normal TG, normal TC, normal SUA and normal weight, respectively (P<0.01). Male patients with metabolic disorders (high TG, high TC, high BP, high SUA and obesity) had higher SF levels than female patients with the corresponding disorders (P<0.01). BG, FINS, BMI, TC, TG, SUA, HOMA-IR and HOMA-β were positively correlated with SF, while DI and QUICKI were negatively correlated with SF (P<0.01). Stepwise regression analysis showed that HOMA-IR, BMI, TC, TG and SUA were risk factors for elevated SF levels. In conclusion, the SF levels in non-diabetic, elderly individuals with metabolic disorders may be significantly related to the clustering of the metabolic disorders. Dyslipidemia, obesity, disorders of purine metabolism and insulin resistance may be important risk factors for higher SF levels in the elderly.
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Affiliation(s)
- Biqiang Li
- Department of Cadre Ward, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Wei Lin
- Department of Cadre Ward, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Nan Lin
- Department of Cadre Ward, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Xiaowen Dong
- Department of Cadre Ward, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
| | - Libin Liu
- Department of Endocrinology, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, P.R. China
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Sripetchwandee J, KenKnight SB, Sanit J, Chattipakorn S, Chattipakorn N. Blockade of mitochondrial calcium uniporter prevents cardiac mitochondrial dysfunction caused by iron overload. Acta Physiol (Oxf) 2014; 210:330-41. [PMID: 24034353 DOI: 10.1111/apha.12162] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2013] [Revised: 07/15/2013] [Accepted: 08/29/2013] [Indexed: 12/24/2022]
Abstract
AIM Iron overload in the heart can lead to iron-overload cardiomyopathy and cardiac arrhythmia. In the past decades, growing evidence has suggested that cardiac mitochondrial dysfunction is associated with the development of cardiac dysfunction and lethal arrhythmias. Despite these facts, the effect of iron overload on cardiac mitochondrial function is still unclear. In this study, we determined the effects of iron overload on the cardiac mitochondrial function and the routes of cardiac mitochondrial iron uptake. We tested the hypothesis that iron overload can lead to cardiac mitochondrial dysfunction and that mitochondrial calcium uniporter (MCU) plays a major role for cardiac mitochondrial iron uptake under iron-overload condition. Cardiac mitochondrial function was assessed via the determination of mitochondrial swelling, mitochondrial reactive oxygen species (ROS) production and mitochondrial membrane potential changes. METHODS Isolated cardiac mitochondria from male Wistar rats were used in this study. To determine the routes for cardiac mitochondrial iron uptake, isolated mitochondria were exposed to MCU blocker (Ru360), mitochondrial permeability transition pore (mPTP) blocker (cyclosporin A) and an iron chelator (deferoxamine). RESULTS We found that (i) iron overload caused cardiac mitochondrial dysfunction, indicated by increased ROS production, mitochondrial membrane depolarization and mitochondrial swelling; and (ii) only MCU blocker completely protected cardiac mitochondrial dysfunction caused by iron overload. CONCLUSIONS These findings strongly suggest that MCU could be the major route for iron uptake into cardiac mitochondria. The inhibition of MCU could be the novel pharmacological intervention for preventing iron-overload cardiomyopathy.
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Affiliation(s)
- J. Sripetchwandee
- Cardiac Electrophysiology Research and Training Center; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Cardiac Electrophysiology Unit; Department of Physiology; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
| | - S. B. KenKnight
- Cardiac Electrophysiology Research and Training Center; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Cardiac Electrophysiology Unit; Department of Physiology; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
| | - J. Sanit
- Cardiac Electrophysiology Research and Training Center; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Cardiac Electrophysiology Unit; Department of Physiology; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
| | - S. Chattipakorn
- Cardiac Electrophysiology Research and Training Center; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Faculty of Dentistry; Chiang Mai University; Chiang Mai Thailand
| | - N. Chattipakorn
- Cardiac Electrophysiology Research and Training Center; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Cardiac Electrophysiology Unit; Department of Physiology; Faculty of Medicine; Chiang Mai University; Chiang Mai Thailand
- Biomedical Engineering Center; Chiang Mai University; Chiang Mai Thailand
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