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Patrizio A, Ferrari SM, Elia G, Ragusa F, Balestri E, Botrini C, Rugani L, Mazzi V, Antonelli A, Fallahi P, Benvenga S. Hypothyroidism and metabolic cardiovascular disease. Front Endocrinol (Lausanne) 2024; 15:1408684. [PMID: 38887272 PMCID: PMC11180764 DOI: 10.3389/fendo.2024.1408684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 05/20/2024] [Indexed: 06/20/2024] Open
Abstract
Cardiovascular disease (CVD) remains the leading cause of death worldwide, representing a major health issue of social and economic relevance. Both hyperthyroidism and hypothyroidism are very common in the adult population, and both disorders may contribute to the onset and progression of CVD. After a brief description of the role of thyroid hormones (THs) on the physiology of the cardiovascular system and the potential mechanism that links THs alterations with changes in cardiac function, blood pressure, endothelial function, and lipid levels, we review updated data about the clinical impact of overt hypothyroidism (OH) and subclinical hypothyroidism (SCH) on CV risk, CVD, and mortality. Furthermore, we summarize the current evidence for treating SCH with levothyroxine (L-T4). Several guidelines of distinguished endocrine societies recommend treatment for SCH with TSH higher than 10 mIU/L, where the benefit of L-T4 therapy is more evident for younger people, but still controversial in those aged over 65 years. Based on current knowledge, more research efforts are needed to better address the clinical management of CV risk and CVD in the elderly affected by SCH.
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Affiliation(s)
- Armando Patrizio
- Department of Emergency Medicine, Azienda Ospedaliero-Universitaria Pisana, Pisa, Italy
| | | | - Giusy Elia
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Francesca Ragusa
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Eugenia Balestri
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Chiara Botrini
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Licia Rugani
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Valeria Mazzi
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Alessandro Antonelli
- Department of Surgical, Medical and Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
| | - Poupak Fallahi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Salvatore Benvenga
- Department of Clinical and Experimental Medicine-Endocrinology, University of Messina, Messina, Italy
- Master Program on Childhood, Adolescent and Women’s Endocrine Health, University of Messina, Messina, Italy
- Interdepartmental Program of Molecular & Clinical Endocrinology and Women’s Endocrine Health, University Hospital Policlinico “G. Martino”, Messina, Italy
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Okamura T, Tsukamoto K, Arai H, Fujioka Y, Ishigaki Y, Koba S, Ohmura H, Shoji T, Yokote K, Yoshida H, Yoshida M, Deguchi J, Dobashi K, Fujiyoshi A, Hamaguchi H, Hara M, Harada-Shiba M, Hirata T, Iida M, Ikeda Y, Ishibashi S, Kanda H, Kihara S, Kitagawa K, Kodama S, Koseki M, Maezawa Y, Masuda D, Miida T, Miyamoto Y, Nishimura R, Node K, Noguchi M, Ohishi M, Saito I, Sawada S, Sone H, Takemoto M, Wakatsuki A, Yanai H. Japan Atherosclerosis Society (JAS) Guidelines for Prevention of Atherosclerotic Cardiovascular Diseases 2022. J Atheroscler Thromb 2024; 31:641-853. [PMID: 38123343 DOI: 10.5551/jat.gl2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023] Open
Affiliation(s)
- Tomonori Okamura
- Preventive Medicine and Public Health, Keio University School of Medicine
| | | | | | - Yoshio Fujioka
- Faculty of Nutrition, Division of Clinical Nutrition, Kobe Gakuin University
| | - Yasushi Ishigaki
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Iwate Medical University
| | - Shinji Koba
- Division of Cardiology, Department of Medicine, Showa University School of Medicine
| | - Hirotoshi Ohmura
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine
| | - Tetsuo Shoji
- Department of Vascular Medicine, Osaka Metropolitan University Graduate school of Medicine
| | - Koutaro Yokote
- Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine
| | - Hiroshi Yoshida
- Department of Laboratory Medicine, The Jikei University Kashiwa Hospital
| | | | - Juno Deguchi
- Department of Vascular Surgery, Saitama Medical Center, Saitama Medical University
| | - Kazushige Dobashi
- Department of Pediatrics, School of Medicine, University of Yamanashi
| | | | | | - Masumi Hara
- Department of Internal Medicine, Mizonokuchi Hospital, Teikyo University School of Medicine
| | - Mariko Harada-Shiba
- Cardiovascular Center, Osaka Medical and Pharmaceutical University
- Department of Molecular Pathogenesis, National Cerebral and Cardiovascular Center Research Institute
| | - Takumi Hirata
- Institute for Clinical and Translational Science, Nara Medical University
| | - Mami Iida
- Department of Internal Medicine and Cardiology, Gifu Prefectural General Medical Center
| | - Yoshiyuki Ikeda
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Shun Ishibashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University, School of Medicine
- Current affiliation: Ishibashi Diabetes and Endocrine Clinic
| | - Hideyuki Kanda
- Department of Public Health, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University
| | - Shinji Kihara
- Medical Laboratory Science and Technology, Division of Health Sciences, Osaka University graduate School of medicine
| | - Kazuo Kitagawa
- Department of Neurology, Tokyo Women's Medical University Hospital
| | - Satoru Kodama
- Department of Prevention of Noncommunicable Diseases and Promotion of Health Checkup, Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine
| | - Masahiro Koseki
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine
| | - Yoshiro Maezawa
- Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine
| | - Daisaku Masuda
- Department of Cardiology, Center for Innovative Medicine and Therapeutics, Dementia Care Center, Doctor's Support Center, Health Care Center, Rinku General Medical Center
| | - Takashi Miida
- Department of Clinical Laboratory Medicine, Juntendo University Graduate School of Medicine
| | | | - Rimei Nishimura
- Department of Diabetes, Metabolism and Endocrinology, The Jikei University School of Medicine
| | - Koichi Node
- Department of Cardiovascular Medicine, Saga University
| | - Midori Noguchi
- Division of Public Health, Department of Social Medicine, Graduate School of Medicine, Osaka University
| | - Mitsuru Ohishi
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Sciences, Kagoshima University
| | - Isao Saito
- Department of Public Health and Epidemiology, Faculty of Medicine, Oita University
| | - Shojiro Sawada
- Division of Metabolism and Diabetes, Faculty of Medicine, Tohoku Medical and Pharmaceutical University
| | - Hirohito Sone
- Department of Hematology, Endocrinology and Metabolism, Niigata University Faculty of Medicine
| | - Minoru Takemoto
- Department of Diabetes, Metabolism and Endocrinology, International University of Health and Welfare
| | | | - Hidekatsu Yanai
- Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine Kohnodai Hospital
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Isailă OM, Stoian VE, Fulga I, Piraianu AI, Hostiuc S. The Relationship between Subclinical Hypothyroidism and Carotid Intima-Media Thickness as a Potential Marker of Cardiovascular Risk: A Systematic Review and a Meta-Analysis. J Cardiovasc Dev Dis 2024; 11:98. [PMID: 38667716 PMCID: PMC11049994 DOI: 10.3390/jcdd11040098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/21/2024] [Accepted: 03/23/2024] [Indexed: 04/28/2024] Open
Abstract
BACKGROUND AND OBJECTIVES Thyroid dysfunction is known to have significant consequences on the cardiovascular system. The correlation between carotid intima-media thickness (CIMT) and subclinical hypothyroidism (SCH) has been frequently evaluated in clinical studies in recent years. This study aimed to evaluate the significance of this association through a meta-analysis. METHODS We conducted a systematic search of PubMed, MedLine, Scopus, and Web of Science databases using the keywords 'subclinical hypothyroidism and carotid intima-media thickness', from the beginning of each database until January 2023. We established the inclusion and exclusion criteria and considered studies that met the inclusion criteria. We used Jamovi for statistical analysis of the data. RESULTS We identified 39 observational studies that met the inclusion criteria, with 3430 subjects: 1545 SCH and 1885 EU. Compared to euthyroid subjects (EU), subjects with subclinical hypothyroidism (SCH) had significantly increased carotid intima-media thickness (CIMT) values; the estimated average mean difference was 0.08 (95% CI 0.05 to 0.10), p < 0.01, I2 = 93.82%. After the sensitivity analysis, a total of 19 from the 39 abovementioned studies were analyzed, with most studies showing a positive association between SCH and thickening of the carotid wall; the estimated average mean difference was 0.04 (95% CI 0.02 to 0.07), p = 0.03, I2 = 77.7. In addition, female sex, advanced age, and high cholesterol levels statistically significantly influenced this association. CONCLUSIONS Our meta-analysis indicates a significant positive association between SCH and increased CIMT, but with some limitations.
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Affiliation(s)
- Oana-Maria Isailă
- Department of Legal Medicine and Bioethics, Faculty of Dentistry, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
| | - Victor Eduard Stoian
- Department of Legal Medicine, Legal Medicine Service Dâmbovița, 130083 Târgoviște, Romania
| | - Iuliu Fulga
- Department of Legal Medicine, Dunărea de Jos University, 800201 Galați, Romania (A.-I.P.)
| | - Alin-Ionut Piraianu
- Department of Legal Medicine, Dunărea de Jos University, 800201 Galați, Romania (A.-I.P.)
| | - Sorin Hostiuc
- Department of Legal Medicine and Bioethics, Faculty of Dentistry, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania;
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Vudu S, Behnke A. C-reactive Protein Levels in Patients With Autoimmune Hypothyroidism Before and After Levothyroxine Treatment. Cureus 2023; 15:e50848. [PMID: 38249164 PMCID: PMC10798680 DOI: 10.7759/cureus.50848] [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] [Accepted: 12/15/2023] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND Hypothyroidism is one of the most common endocrine disorders. Most patients with hypothyroidism have autoimmune thyroiditis (Hashimoto's), characterized by elevated concentrations of anti-thyroperoxidase (ATPO) antibodies. Both overt hypothyroidism (OH) and subclinical hypothyroidism (SH) have been associated with cardiovascular risk factors, including markers of inflammation. High-sensitivity C-reactive protein (hs-CRP) is a veridical marker of systemic inflammation. Even a minor increase in hs-CRP is considered a cardiovascular risk; therefore, evidence of a beneficial effect of levothyroxine treatment on hs-CRP could be an argument in favor of therapy for SH. AIM To assess hs-CRP levels in patients with hypothyroidism and evaluate levothyroxine treatment's effect on hs-CRP. STUDY DESIGN This is a cohort study in which patients with hypothyroidism were evaluated before and after treatment with levothyroxine. METHODS 37 patients (17 with OH and 20 with SH) and 38 healthy controls were included in the study. hs-CRP was measured at the baseline visit, then after 2 and 4 months of levothyroxine therapy at a dose necessary to achieve euthyroidism as evidenced by a normal level of thyroid-stimulating hormone (TSH). RESULTS hs-CRP was significantly increased in OH (p < 0.001) and SH (p = 0.001) at baseline as compared to controls. hs-CRP significantly decreased in SH (2.2±1.6 mg/L at baseline visit, 1.4±1.1 mg/L after 2 months of levothyroxine treatment, P = 0.017) and tended to decrease in OH (2.3±1.6 mg/L at baseline visit, 1.6±1.1 mg/L after 4 months of levothyroxine treatment, P = 0.067*). CONCLUSIONS Patients with hypothyroidism have increased hs-CRP levels compared to a healthy control group and, thereby, a moderately increased cardiovascular risk. Achievement of euthyroidism by levothyroxine treatment decreased the levels of hs-CRP in patients with hypothyroidism.
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Affiliation(s)
- Stela Vudu
- Diabetes and Endocrinology, Nicolae Testemițanu State University of Medicine and Pharmacy, Chisinau, MDA
| | - Andrew Behnke
- Diabetes and Endocrinology, Virginia Tech Carilion School of Medicine, Roanoke, USA
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Ettleson MD. Cardiovascular outcomes in subclinical thyroid disease: an update. Curr Opin Endocrinol Diabetes Obes 2023; 30:218-224. [PMID: 37288727 PMCID: PMC10527066 DOI: 10.1097/med.0000000000000818] [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] [Indexed: 06/09/2023]
Abstract
PURPOSE OF REVIEW Subclinical thyroid disease is defined by a thyroid stimulating hormone (TSH) level outside of the normal range with normal circulating thyroid hormone levels. Excess adverse cardiovascular outcomes have been observed in certain patient populations with subclinical hypothyroidism (SCH) and hyperthyroidism (SCHr). The role of thyroid hormone and antithyroid treatments for subclinical thyroid disease remains debated. RECENT FINDINGS Cardiovascular disease appears to be a major mediator of all-cause mortality in patients with SCH, in particular those aged at least 60 years of age. In contrast, pooled clinical trial results did not find that levothyroxine reduced the incidence of cardiovascular events or mortality in this patient population. The association between SCHr and atrial fibrillation is well established; however, a 5-year follow-up of older patients with mild (TSH 0.1-0.4 mIU/l) SCHr found no increased incidence of atrial fibrillation. Separately, SCHr was associated with derangements in endothelial progenitor cell function that may underlie vascular disease independent from effects on cardiac function. SUMMARY The impact of treatment of subclinical thyroid disease on cardiovascular outcomes remains uncertain. Additional prospective and trial data are needed to evaluate treatment effects on cardiovascular outcomes in younger populations.
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Affiliation(s)
- Matthew D. Ettleson
- University of Chicago, Section of Endocrinology, Diabetes, and Metabolism, Chicago, IL
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Urgatz B, Razvi S. Subclinical hypothyroidism, outcomes and management guidelines: a narrative review and update of recent literature. Curr Med Res Opin 2023; 39:351-365. [PMID: 36632720 DOI: 10.1080/03007995.2023.2165811] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Subclinical hypothyroidism (SCH) is diagnosed when serum thyroid stimulation hormone (thyrotropin; TSH) levels are above the reference range, accompanied by levels of free thyroxine within its reference range. The management of SCH remains a diagnostic and therapeutic challenge despite many years of research relating to its epidemiology, aetiology, effectiveness of treatment and safety. European Thyroid Association (ETA) guidelines for the management of SCH were published almost a decade ago. This narrative review summarizes the clinical literature relating to SCH and outcomes since the publication of these guidelines. Clinical evidence emerging during the previous decade generally supports the view that SCH is associated with adverse outcomes to an extent that is intermediate between euthyroidism and overt hypothyroidism although evidence that treatment with thyroid hormone replacement is beneficial is lacking. Accordingly, the rationale for the recommendations for intervention in the ETA guidelines based on the age of the patient, level of serum TSH, symptoms and comorbidities remains valid today.
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Affiliation(s)
| | - Salman Razvi
- Translational and Clinical Research Institute, Newcastle University, Newcastle-upon-Tyne, UK
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Xie C, Jiang Y, Shen X, Liu M, Xu Y, Zhong W, Ge Z, Qian M, Dong N, Gong C, Zhang G. Thyroid hormone levels paradox in acute ischemic stroke. Transl Neurosci 2023; 14:20220289. [PMID: 37303476 PMCID: PMC10251163 DOI: 10.1515/tnsci-2022-0289] [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: 01/06/2023] [Revised: 04/27/2023] [Accepted: 05/09/2023] [Indexed: 06/13/2023] Open
Abstract
Objective Accumulating evidence has suggested that thyroid hormone levels affect the prognosis of acute ischemic stroke (AIS), but the results have been inconsistent. Methods Basic data, neural scale scores, thyroid hormone levels, and other laboratory examination data of AIS patients were collected. The patients were divided into excellent and poor prognosis group at discharge and 90 days after discharge. Logistic regression models were applied to evaluate the relationship between thyroid hormone levels and prognosis. A subgroup analysis was performed based on stroke severity. Results A number of 441 AIS patients were included in this study. Those in the poor prognosis group were older, with higher blood sugar levels, higher free thyroxine (FT4) levels, and severe stroke (all p < 0.05) at baseline. Free thyroxine (FT4) showed a predictive value (all p < 0.05) for prognosis in the model adjusted for age, gender, systolic pressure, and glucose level. However, after adjustment for types and severity of stroke, FT4 showed insignificant associations. In the severe subgroup at discharge, the change in FT4 was statistically significant (p = 0.015), odds ratio (95% confidence interval) = 1.394 (1.068-1.820) but not in the other subgroups. Conclusions High-normal FT4 serum levels in patients with severe stroke receiving conservative medical treatment at admission may indicate a worse short-term prognosis.
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Affiliation(s)
- Chunhui Xie
- Department of Neurology, The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang, China
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Yi Jiang
- Department of Geriatrics, Lianyungang Clinical College of Bengbu Medical College (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Xiaozhu Shen
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Mengqian Liu
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Yiwen Xu
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Wen Zhong
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Zhonglin Ge
- Department of Neurology, Lianyungang Second People’s Hospital, Lianyungang, China
| | - Mingyue Qian
- Department of Neurology, Lianyungang Second People’s Hospital, Lianyungang, China
| | - Nan Dong
- Department of Neurology, Suzhou Industrial Park Xinghai Hospital, Suzhou, China
| | - Chen Gong
- Department of Geriatrics, Lianyungang Hospital Affiliated to Jiangsu University (Lianyungang Second People’s Hospital), Lianyungang, China
| | - Guanghui Zhang
- Department of Neurology, Lianyungang Hospital affiliated to Xuzhou Medical University, Lianyungang, China
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Yan J, Tian J, Yang H, Han G, Liu Y, He H, Han Q, Zhang Y. A clinical decision support system for predicting coronary artery stenosis in patients with suspected coronary heart disease. Comput Biol Med 2022; 151:106300. [PMID: 36410096 DOI: 10.1016/j.compbiomed.2022.106300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/16/2022] [Accepted: 11/06/2022] [Indexed: 11/09/2022]
Abstract
Invasive coronary angiography imposes risks and high medical costs. Therefore, accurate, reliable, non-invasive, and cost-effective methods for diagnosing coronary stenosis are required. We designed a machine learning-based risk-prediction system as an accurate, noninvasive, and cost-effective alternative method for evaluating suspected coronary heart disease (CHD) patients. Electronic medical record data were collected from suspected CHD patients undergoing coronary angiography between May 1, 2017, and December 31, 2019. Multi-Class XGBoost, LightGBM, Random Forest, NGBoost, logistic models and MLP were constructed to identify patients with normal coronary arteries (class 0: no coronary artery stenosis), minimum coronary artery stenosis (class 1: 0 < stenosis <50%), and CHD (class 2: stenosis ≥50%). Model stability was verified externally. A risk-assessment and management system was established for patient-specific intervention guidance. Of 1577 suspected CHD patients, 81 (5.14%) had normal coronary arteries. The XGBoost model demonstrated the best overall classification performance (micro-average receiver operating characteristic [ROC] curve: 0.92, macro-average ROC curve: 0.89, class 0 ROC curve: 0.88, class 1 ROC curve: 0.90, class 2 ROC curve: 0.89), with good external verification. In class-specific classification, the XGBoost model yielded F1 values of 0.636, 0.850, and 0.858, for Classes 0, 1, and 2, respectively. The visualization system allowed disease diagnosis and probability estimation, and identified the intervention focus for individual patients. Thus, the system distinguished coronary artery stenosis well in suspected CHD patients. Personalized probability curves provide individualized intervention guidance. This may reduce the number of invasive inspections in negative patients, while facilitating decision-making regarding appropriate medical intervention, improving patient prognosis.
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Affiliation(s)
- Jingjing Yan
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China
| | - Jing Tian
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China; Department of Cardiology, The First Hospital of Shanxi Medical University, Taiyuan, China
| | - Hong Yang
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China
| | - Gangfei Han
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China
| | - Yanling Liu
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China
| | - Hangzhi He
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China
| | - Qinghua Han
- Department of Cardiology, The First Hospital of Shanxi Medical University, Taiyuan, China.
| | - Yanbo Zhang
- Department of Health Statistics, School of Public Health, Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment, Shanxi Medical University, Taiyuan, China; Shanxi University of Chinese Medicine, Taiyuan, China.
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Mazeto GMFDS, Sgarbi JA, Ramos HE, Villagelin DGP, Nogueira CR, Vaisman M, Graf H, Carvalho GAD. Approach to adult patients with primary hypothyroidism in some special situations: a position statement from the Thyroid Department of the Brazilian Society of Endocrinology and Metabolism (SBEM). ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2022; 66:871-882. [PMID: 36394484 PMCID: PMC10118754 DOI: 10.20945/2359-3997000000545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Primary hypothyroidism is a common disorder in clinical practice. The management of most cases of hypothyroidism is usually straightforward, but the best approach in some special situations may raise questions among physicians. This position statement was prepared by experts from the Brazilian Society of Endocrinology and Metabolism to guide the management of three special situations, namely, hypothyroidism in the elderly, subclinical hypothyroidism in patients with heart disease, and difficult-to-control hypothyroidism. The authors prepared the present statement after conducting a search on the databases MEDLINE/PubMed, LILACS, and SciELO and selecting articles with the best evidence quality addressing the selected situations. The statement presents information about the current approach to patients in these special situations.
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Gluvic ZM, Zafirovic SS, Obradovic MM, Sudar-Milovanovic EM, Rizzo M, Isenovic ER. Hypothyroidism and Risk of Cardiovascular Disease. Curr Pharm Des 2022; 28:2065-2072. [PMID: 35726428 DOI: 10.2174/1381612828666220620160516] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 04/12/2022] [Indexed: 11/22/2022]
Abstract
Thyroid hormones (TH) have a significant impact on cellular oxidative metabolism. Besides that, they maintain vascular homeostasis by positive effects on endothelial and vascular smooth muscle cells. Subclinical (SCH) and clinical (CH) hypothyroidism influences target organs by changing their morphology and function and impaired blood and oxygen supply induced by accelerated atherosclerosis. The increased risk of acceleration and extension of atherosclerosis in patients with SCH and CH could be explained by dyslipidemia, diastolic hypertension, increased arterial stiffness, endothelial dysfunction, and altered blood coagulation. Instability of atherosclerotic plaque in hypothyroidism could cause excessive activity of the elements of innate immunity, which are characterized by: the significant presence of macrophages in atherosclerotic plaques, increased nuclear factor kappa B (NFkB) expression, and elevated levels of tumor necrosis factor α (TNF-α) and matrix metalloproteinase (MMP) 9, with reduced interstitial collagen, which all together creates inflammation milieu resulted in plaque rupture. Optimal substitution by levothyroxine (LT4) restores biochemical euthyroidism. In postmenopausal women and elderly patients with hypothyroidism and associated vascular comorbidity, excessive LT4 substitution could lead to atrial rhythm disorders and osteoporosis. Therefore, it is of interest to maintain thyroid-stimulating hormone (TSH) levels in the reference range, thus eliminating the deleterious effects of lower or higher TSH levels on the cardiovascular system. This review summarizes the recent literature on subclinical and clinical hypothyroidism and atherosclerotic cardiovascular disease and discusses the effects of LT4 replacement therapy on restoring biochemical euthyroidism and atherosclerosis processes.
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Affiliation(s)
- Zoran M Gluvic
- Department of Endocrinology and Diabetes, Clinic for Internal Medicine, Zemun Clinical Hospital, School of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Sonja S Zafirovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Milan M Obradovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Emina M Sudar-Milovanovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
| | - Manfredi Rizzo
- Promise Department, School of Medicine, University of Palermo, Italy
| | - Esma R Isenovic
- Department of Radiobiology and Molecular Genetics, VINČA Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia
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Ruderich F, Feldkamp J. [Subclinical hypothyroidism]. Dtsch Med Wochenschr 2022; 147:289-294. [PMID: 35291032 DOI: 10.1055/a-1612-4816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Subclinical hypothyroidism is usually a laboratory diagnosis without significant symptoms and is defined by an elevated thyroid-stimulating hormone (thyrotropin, TSH) with normal thyroid hormone levels. On laboratory checks after two to three months, spontaneous normalization is found in 50 % of all cases in the sense of a transient elevation.With persistently elevated TSH levels, subclinical hypothyroidism is associated with evidence of thyroid-specific antibodies in the sense of autoimmune thyroiditis. Physiologically higher TSH levels are found in old age. It can therefore be assumed that the diagnosis of subclinical hypothyroidism is made and treated too frequently in older people over 70 years of age.Studies have so far failed to show a positive effect of substitution therapy of subclinical hypothyroidism, especially in elderly patients. On the other hand, there is a not inconsiderable risk of overtreatment with the development of subclinical hyperthyroidism. Its negative consequences in the form of atrial fibrillation and osteoporosis impair the quality and duration of life. Therefore, the indication for substitution therapy of subclinical hypothyroidism should be made with caution.One group in which diagnosis and therapy require special sensitivity is pregnant women. Here, two individuals, mother and child, must be treated. Varying target values and dosages in relation to the gestational age must be taken into account.
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Paschou SA, Bletsa E, Stampouloglou PK, Tsigkou V, Valatsou A, Stefanaki K, Kazakou P, Spartalis M, Spartalis E, Oikonomou E, Siasos G. Thyroid disorders and cardiovascular manifestations: an update. Endocrine 2022; 75:672-683. [PMID: 35032315 DOI: 10.1007/s12020-022-02982-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 01/09/2022] [Indexed: 12/25/2022]
Abstract
Cardiovascular disease (CVD) remains the leading cause of death worldwide, representing a major health, social, and economic issue. Thyroid disorders are very common and affect >10% of the adult population in total. The aim of this review is to describe the physiologic role of thyroid hormones on cardiovascular system, to present cardiovascular manifestations in patients with thyroid disorders, emphasizing in molecular mechanisms and biochemical pathways, and to summarize current knowledge of treatment options. Thyroid hormone receptors are located both in myocardium and vessels, and changes in their concentrations affect cardiovascular function. Hyperthyroidism or hypothyroidism, both clinical and subclinical, without the indicated therapeutical management, may contribute to the progression of CVD. According to recent studies, even middle changes in thyroid hormones levels increase cardiovascular mortality from 20% to 80%. In more details, thyroid disorders seem to have serious effects on the cardiovascular system via plenty mechanisms, including dyslipidemia, hypertension, systolic and diastolic myocardial dysfunction, as well endothelial dysfunction. On top of clinical thyroid disorders management, current therapeutics focus on younger patients with subclinical hypothyroidism and elderly patients with subclinical hyperthyroidism.
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Affiliation(s)
- Stavroula A Paschou
- Endocrine Unit and Diabetes Centre, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
| | - Evanthia Bletsa
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Panagiota K Stampouloglou
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasiliki Tsigkou
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Angeliki Valatsou
- 1st Department of Cardiology, Hippokration General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Katerina Stefanaki
- Endocrine Unit and Diabetes Centre, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Paraskevi Kazakou
- Endocrine Unit and Diabetes Centre, Department of Clinical Therapeutics, Alexandra Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Michael Spartalis
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleftherios Spartalis
- 2nd Department of Propaedeutic Surgery, Laiko General Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Evangelos Oikonomou
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerasimos Siasos
- 3rd Department of Cardiology, Sotiria Chest Disease Hospital, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Sgarbi JA, Ward LS. A practical contemporary approach to decision-making on subclinical hypothyroidism. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2021; 65:32-39. [PMID: 33320453 PMCID: PMC10528698 DOI: 10.20945/2359-3997000000317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 10/02/2020] [Indexed: 11/23/2022]
Abstract
Subclinical hypothyroidism (Shypo) is an increasingly frequent condition in common medical practice. Its diagnosis continues to pose a challenge since a series of non-thyroidal and temporary conditions can elevate serum TSH levels. In addition, the consequences of Shypo are still up for debate. Although detrimental cardiovascular effects have been consistently demonstrated in the young, they are less evident in older adults (65-79 years), and even more so in the oldest old (≥80 years). In the absence of evidence of any benefits of treating Shypo in patients' clinical manifestations and unfavorable outcomes, the most effective decision-making approach should include a thorough investigation of the patient's condition integrating all relevant clinical data, such as TSH levels, age, quality of life, comorbidities, cardiovascular risk, safety, and personal preferences. The decision-making process needs to take into account the risk of levothyroxine overtreatment and the resulting adverse consequences, such as reduction of bone mineral density, heart failure, and atrial fibrillation. Hence, current evidence suggests that individuals with TSH > 10 mU/L, who test positive for TPO Ab or are symptomatic may benefit from levothyroxine treatment. However, a more cautious and conservative approach is required in older (≥65 years of age), and oldest-old (≥80 years) patients, particularly those with frailty, in which the risk of treatment can outweigh potential benefits. The latter may benefit from a wait-and-see approach.
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Affiliation(s)
- José Augusto Sgarbi
- Unidade de Tireoide, Divisão de Endocrinologia e Metabolismo, Faculdade de Medicina de Marília (Famema), Marília, SP, Brasil,
| | - Laura Sterian Ward
- Laboratório de Genética Molecular do Câncer, Faculdade de Ciências Médicas (FCM), Universidade Estadual de Campinas (Unicamp), Campinas, SP, Brasil
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The role of thyroid hormones in carotid arterial wall remodeling in women. ACTA ACUST UNITED AC 2021; 60:24-33. [PMID: 34303321 DOI: 10.2478/rjim-2021-0028] [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: 02/09/2021] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Thyroid hormones affect the cardiovascular system, but the precise mechanisms of their effects on the development of atherosclerosis are not entirely clear. The relationship between subclinical hypothyroidism, dyslipidemia and carotid atherosclerosis has been widely investigated, but the findings were controversial. The aim of the present study was to determine whether female subjects with subclinical hypothyroidism (SHypo) have increased carotid intima-media thickness (IMT) compared with euthyroid subjects, as well as to examine the association of SHypo, carotid atherosclerosis and dyslipidemia. METHODS This research included 100 women aged 30 to 70 years who were divided into two groups: the SHypo group including subjects with signs of subclinical hypothyroidism and the control group of euthyroid subjects. Carotid IMT thickness using B mode ultrasound was determined and its correlation with serum concentrations of fT4, TSH, CRP, and lipid profile including small dense LDL (sdLDL) was analysed. RESULTS Subjects with SHypo had significantly increased carotid IMT (IMT ≥ 75th centile) in all three measured segments of the right (p <0.001) and the left (p = 0.001) carotid artery compared to the control group, with a significantly more frequent appearance of plaque (25% vs. 9%; p = 0.05). Significant positive correlations were found between higher TSH and higher IMT values. Increased age, LDL cholesterol, and TSH predicted thickening of the carotid artery IMT. CONCLUSIONS It is important to screen people showing early, subclinical signs of thyroid gland dysfunction due to its impact on carotid atherosclerosis development.
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Zhou XZ, Shi R, Wang J, Shi K, Liu X, Li Y, Gao Y, Guo YK, Yang ZG. Characteristics of coronary artery disease in patients with subclinical hypothyroidism: evaluation using coronary artery computed tomography angiography. BMC Cardiovasc Disord 2021; 21:303. [PMID: 34130657 PMCID: PMC8207731 DOI: 10.1186/s12872-021-02116-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 06/07/2021] [Indexed: 02/08/2023] Open
Abstract
Background Subclinical hypothyroidism (SCH) has recently been acknowledged as an independent risk factor for coronary artery disease (CAD). However, the characteristics of CAD in patients with SCH are not fully understood. This study aims to evaluate the features of CAD in patients with SCH using coronary computed tomographic angiography (CCTA). Materials and methods From 1 April, 2018 to 30 June, 2020, 234 consecutive SCH patients with coronary plaques identified on CCTA were included retrospectively. They were further subdivided into different degree of SCH groups (mild SCH vs. moderate SCH vs. severe SCH: 143 vs 62 vs 28) and different gender groups (men with SCH vs. women with SCH:116 vs 118). The distributions and types of plaques, luminal narrowing, segment involvement scores (SIS) and segment stenosis scores (SSS) were evaluated and compared among the different groups. Results Patients with severe SCH had fewer calcified plaques (0.7 ± 0.9 vs. 2.0 ± 1.9, p < 0.001) and more non-calcified plaques (0.9 ± 1.0 vs. 0.3 ± 0.5, p < 0.001) than those with mild SCH. As the SCH condition worsened, the proportion of non-calcified plaques significantly increased. Whereas there were no significant discrepancies in SIS and SSS among patients with different grades of SCH (all p > 0.05). Men with SCH had higher SIS (3.9 ± 2.3 vs. 3.0 ± 2.3, p = 0.004) and SSS (7.8 ± 5.4 vs. 5.4 ± 3.0, p = 0.002) than women. Multivariate logistic and linear regression analysis demonstrated that grades of SCH (Moderate SCH, odds ratio [OR] 2.11; 95% CI 1.03–4.34, p = 0.042; severe SCH, OR: 10.00; 95% CI 3.82–26.20, p < 0.001, taken mild SCH as a reference) was independently associated with the presence of non-calcified plaques, whereas sex (B: 1.67; 95% CI 0.27–3.10, p = 0.009) was independently associated with SSS. Conclusions Severe SCH is associated with non-calcified plaques, and men with SCH have higher total plaque burden than women. We suggest that it is important to evaluate for coronary plaque in SCH patients, especially those with severe SCH and men with SCH.
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Affiliation(s)
- Xin-Zhu Zhou
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Rui Shi
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Jin Wang
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Ke Shi
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Xi Liu
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Yuan Li
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Yue Gao
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China
| | - Ying-Kun Guo
- Department of Radiology, Key Laboratory of Birth Defects and Related Diseases of Women and Children of Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Zhi-Gang Yang
- Department of Radiology, West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, 610041, Sichuan, China.
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Yurtdaş M, Asoğlu R, Özaydın A, Doğan Z. Lymphocyte to monocyte ratio may predict increased carotid intima-media thickness in patients with subclinical hypothyroidism. Clin Hemorheol Microcirc 2021; 77:133-142. [PMID: 33074218 DOI: 10.3233/ch-200820] [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] [Indexed: 12/30/2022]
Abstract
BACKGROUND Inflammation has an important role in the pathogenesis of atherosclerosis. Lymphocyte-to-monocyte ratio (LMR) is accepted as an indicator of inflammation. OBJECTIVE Our aim was to scrutinize the relationship between LMR and subclinical atherosclerosis (SubAth) measured by carotid intima-media thickness (CIMT) in subclinical hypothyroidism (SubHT). METHODS Newly identified 190 SubHT patients were prospectively included into the study. Blood samples were taken for measuring laboratory parameters. Then, CIMT was computed. Patients were seperated into 2 groups by their CIMT value (Group-1: ≤0.9 and Group-2: >0.9 mm), and then stratified into tertiles pursuant to LMR and thyroid-stimulating hormone (TSH) levels, respectively. RESULTS 59 patients had an increased CIMT value (Group-2), and 131 patients had a normal CIMT value (Group-1). Group-2 had a lower LMR and a greater high-sensitivity C-reactive protein (hsCRP), CIMT and TSH than Group-1 (for all, p < 0.05). Patients in the lowest tertile of LMR had a higher hsCRP, TSH and CIMT than those in the highest tertile (for all, p < 0.05). LMR was negatively associated with hsCRP, CIMT and TSH (for all, p < 0.05). LMR and TSH were independent predictors of increased CIMT. CONCLUSIONS Pre-ultrasonographic LMR, which is a simple and inexpensive inflammatory marker, may give additional predictive information to determine SubAth in SubHT.
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Affiliation(s)
- Mustafa Yurtdaş
- Istanbul Atlas University, School of Medicine, Istanbul Medicine Hospital, Department of Cardiology, Istanbul, Turkey
| | - Ramazan Asoğlu
- Adiyaman University, School of Medicine, Education and Research Hospital, Department of Cardiology, Adıyaman, Turkey
| | - Adnan Özaydın
- Balıkesir Sevgi Hospital, Department of Internal Medicine, Balıkesir, Turkey
| | - Zeki Doğan
- Istanbul Atlas University, School of Medicine, Istanbul Medicine Hospital, Department of Cardiology, Istanbul, Turkey
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Chen X, Deng S, Sena C, Zhou C, Thaker VV. Relationship of TSH Levels with Cardiometabolic Risk Factors in US Youth and Reference Percentiles for Thyroid Function. J Clin Endocrinol Metab 2021; 106:e1221-e1230. [PMID: 33274355 PMCID: PMC7947754 DOI: 10.1210/clinem/dgaa900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Indexed: 12/12/2022]
Abstract
CONTEXT Thyroid hormones play an important role in metabolic homeostasis, and higher levels have been associated with cardiometabolic risk. OBJECTIVE To examine the association of cardiometabolic risk factors with TSH levels in US youth. METHODS Cross-sectional study of youth aged 12 to 18 years without known thyroid abnormalities from 5 National Health and Nutrition Examination Survey cycles (n = 2818) representing 15.4 million US children. Subclinical hypothyroidism (SH) was defined as thyrotropin (TSH) levels of 4.5 to 10 mIU/L. Assessed cardiometabolic risk factors include abdominal obesity (waist circumference >90th percentile), hypertriglyceridemia (triglyceride ≥130 mg/dL), low high-density lipoprotein cholesterol (<40 mg/dL), elevated blood pressure (systolic and diastolic blood pressure ≥90th percentile), hyperglycemia (fasting blood glucose ≥100 mg/dL, or known diabetes), insulin resistance (homeostatic model for insulin resistance > 3.16), and elevated alanine transferase (≥ 50 for boys and ≥44 U/L for girls). Age and sex- specific percentiles for thyroid parameters were calculated. RESULTS In this cohort of youth (51.3% male), 31.2% had overweight/obesity. The prevalence of SH was 2.0% (95% CI 1.2-3.1). The median TSH levels were higher in youth with overweight/obesity (P < 0.001). Adjusting for age, sex, race/ethnicity, and obesity, youth with TSH in the fourth quantile had higher odds of abdominal obesity (OR 2.53 [1.43-4.46], P = .002), insulin resistance (OR 2.82 [1.42-5.57], P = .003), and ≥2 cardiometabolic risk factors (CMRF) (OR 2.20 [1.23-3.95], P = .009). CONCLUSION The prevalence of SH is low in US youth. The higher odds of insulin resistance and cardiometabolic risk factors in youth with TSH levels >75th percentile requires further study.
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Affiliation(s)
- Xinlei Chen
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, USA
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, PA, USA
| | - Shuliang Deng
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, USA
- Division of Cardiovascular Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Cecilia Sena
- Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Chuhan Zhou
- Institute of Human Nutrition, Columbia University, New York, NY, USA
| | - Vidhu V Thaker
- Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
- Correspondence: Vidhu V. Thaker, MD, Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, 1150, St. Nicholas Avenue, New York, NY 10032, USA.
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Yanai H, Yoshida H. Secondary dyslipidemia: its treatments and association with atherosclerosis. Glob Health Med 2021; 3:15-23. [PMID: 33688591 PMCID: PMC7936375 DOI: 10.35772/ghm.2020.01078] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 04/15/2023]
Abstract
Dyslipidemia is classified into primary and secondary types. Primary dyslipidemia is basically inherited and caused by single or multiple gene mutations that result in either overproduction or defective clearance of triglycerides and cholesterol. Secondary dyslipidemia is caused by unhealthy lifestyle factors and acquired medical conditions, including underlying diseases and applied drugs. Secondary dyslipidemia accounts for approximately 30-40% of all dyslipidemia. Secondary dyslipidemia should be treated by finding and addressing its causative diseases or drugs. For example, treatment of secondary dyslipidemia, such as hyperlipidemia due to hypothyroidism, by using statin without controlling hypothyroidism, may lead to myopathy and serious adverse events such as rhabdomyolysis. Differential diagnosis of secondary dyslipidemia is very important for safe and effective treatment. Here, we describe an overview about diseases and drugs that interfere with lipid metabolism leading to secondary dyslipidemia. Further, we show the association of each secondary dyslipidemia with atherosclerosis and the treatments for such dyslipidemia.
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Affiliation(s)
- Hidekatsu Yanai
- Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine Kohnodai Hospital, Chiba, Japan
- Address correspondence to:Hidekatsu Yanai, Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine Kohnodai Hospital, 1-7-1 Kohnodai, Ichikawa, Chiba 272- 8516, Japan. E-mail:
| | - Hiroshi Yoshida
- Department of Laboratory Medicine, The Jikei University Kashiwa Hospital, Chiba, Japan
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Hypothyroidism and risks of cerebrovascular complications among patients with head and neck cancer after radiotherapy. BMC Neurol 2021; 21:30. [PMID: 33468088 PMCID: PMC7814701 DOI: 10.1186/s12883-021-02047-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 01/04/2021] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Hypothyroidism (HT) and carotid artery stenosis (CAS) are complications of radiotherapy (RT) in patients with head and neck cancer (HNC). The impact of post-RT HT on CAS progression remains unclear. METHODS Between 2013 and 2014, HNC patients who had ever received RT and were under regular follow-up in our hospital were initially screened. Patients were categorized into euthyroid (EU) and HT groups. Details of RT and HNC were recorded. Total plaque scores and degrees of CAS were measured during annual extracranial duplex follow-up. Patients were monitored for CAS progression to > 50 % stenosis or ischemic stroke (IS). Cumulative time to CAS progression and IS between the 2 groups were compared. Data were further analyzed based on the use or nonuse of thyroxine of the HT group. RESULTS 333 HNC patients with RT history were screened. Finally, 216 patients were recruited (94 and 122 patients in the EU and HT groups). Patients of the HT group received higher mean RT doses (HT vs. EU; 7021.55 ± 401.67 vs. 6869.69 ± 425.32 centi-grays, p = 0.02). Multivariate Cox models showed comparable CAS progression (p = 0.24) and IS occurrence (p = 0.51) between the 2 groups. Moreover, no significant difference was observed in time to CAS progression (p = 0.49) or IS (p = 0.31) among patients with EU and HT using and not using thyroxine supplement. CONCLUSIONS Our results did not demonstrate significant effects of HT and thyroxine supplementation on CAS progression and IS incidence in patients with HNC after RT.
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Yang Y, Jia Y, Ning Y, Wen W, Qin Y, Zhang H, Du Y, Li L, Jiao X, Yang Y, Liu G, Huang M, Zhang M. TAK1-AMPK Pathway in Macrophages Regulates Hypothyroid Atherosclerosis. Cardiovasc Drugs Ther 2020; 35:599-612. [PMID: 32495070 DOI: 10.1007/s10557-020-06996-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
PURPOSE Hypothyroidism (HT) is associated with accelerated atherosclerosis (AS). The efficacy of traditional strategies of hypothyroid AS remains controversial. Here, we aimed to deepen the understanding of the HT-induced acceleration of AS, to decrease the residual risk of coronary artery disease (CAD) and to find a new therapeutic target. METHODS We collected peripheral venous blood samples from 20 patients and divided them into 4 groups, namely, the normal group, the HT group, the CAD group and the HT + CAD group. Then we performed mRNA microarray analysis and bioinformatics analysis to screen the differentially expressed genes and pathways, and we also conducted validations on ApoE knockout mice models and Raw264.7 cell models. RESULTS In short, (1) in the analysis between the CAD group and the HT + CAD group, we found a total of 1218 differentially expressed genes, 11 upregulated pathways and 40 downregulated pathways. (2) We validated that patients with HT and CAD had a significantly decreased expression of MAP3K7 (encoding transforming growth factor-β-activated kinase 1, TAK1) gene than normal subjects. (3) In animal and cell experiments, we found the decreased expression of TAK1 and the reduced phosphorylation of AMP-activated protein kinase (AMPK) under the hypothyroid and atherosclerotic condition. (4) Changes in the expressions of TAK1 may affect the progression of AS. CONCLUSION Taken together, these data suggest that the accelerated AS in hypothyroid patients may be due to the suppression of TAK1-AMPK pathway in macrophages. This new finding may become a novel therapeutic target in hypothyroid AS.
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Affiliation(s)
- Yunxiao Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Yifan Jia
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Yu Ning
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Wanwan Wen
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Yanwen Qin
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Huina Zhang
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Yunhui Du
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Linyi Li
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Xiaolu Jiao
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Yunyun Yang
- Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Guanghui Liu
- Endocrinology Department, Tongji Hospital affiliated to School of Medicine, Tongji University, Shanghai, China
| | - Mengling Huang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Ming Zhang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, No.2, Anzhen Road, Chaoyang District, Beijing, 100029, China.
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Głowinska-Olszewska B, Borysewicz-Sańczyk H, Sawicka B, Klonowska B, Charemska D, Żelazowska-Rutkowska B, Bossowski A. Does Hashimoto's Thyroiditis Increase the Risk of Cardiovascular Disease in Young Type 1 Diabetic Patients? Front Endocrinol (Lausanne) 2020; 11:431. [PMID: 32793113 PMCID: PMC7393727 DOI: 10.3389/fendo.2020.00431] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/01/2020] [Indexed: 12/11/2022] Open
Abstract
Background: Immunological and hormonal disorders have undoubted influence on the development of atherosclerotic process. Autoimmune diseases accompanying type 1 diabetes (T1D) may additionally accelerate atherosclerosis progression and increase the risk of cardiovascular events in the future. The influence of subclinical hypothyroidism on the cardiovascular system, in particular, has recently aroused great interest. The aim of our study was to assess intima-media thickness (cIMT) of common carotid arteries and the occurrence of classical atherosclerosis risk factors together with selected new biomarkers of cardiovascular diseases in young patients with type 1 diabetes mellitus coexisting with Hashimoto's disease (HD). Patients and Methods: The study included 50 adolescents and young adults with T1D with mean age 17.1 ± 3 years, with mean diabetes duration of 10.5 ± 3.3 years, including 20 patients with diagnosed HD: T1D and HD(+), and 30 patients with no additional diseases: T1D and HD(-). Twenty-two healthy, age-matched volunteers formed control group (C). We analyzed mean HbA1c value from all years of disease, BMI, blood pressure, lipids, new biomarkers of atherosclerosis (hsCRP, adiponectin, myeloperoxidase, NT-proBNP peptide, vitamin D), and cIMT of common carotid arteries. Results: In the group of patients with T1D and HD(+), significantly higher BMI was found: 23.3 ± 4.4 vs. 21.28 ± 2.9 in group HD(-) and 19.65 ± 2.4 kg/m2 in group C (p = 0.003), and higher waist circumference: 79 ± 10.9 vs. 75.10 ± 7.6 in group HD(-) vs. 69.0 ± 7.4 cm in group C (p < 0.001). The mean value of HbA1c was higher in group T1D and HD(+): 8.8% than in group HD(-): 8.1% (p = 0.04). Significantly higher concentration of hsCRP and lower vitamin D were observed in T1D and HD(+) in comparison to T1D and HD(-) and the control group. The IMT index in the HD(+) group was 0.46 ± 0.05 mm and was comparable to the HD(-) group but significantly higher than in healthy controls: 0.41 ± 0.03 mm (P < 0.05). Conclusions: Young patients with type 1 diabetes mellitus and with coexisting Hashimoto's thyroiditis have a higher BMI, a higher waist circumference, and a higher HbA1c value, which altogether may cause faster development of macroangiopathy in the near future. Additional risk for cardiovascular disease may result from low vitamin D and increased hsCRP concentration in this group of patients. Coexistence of Hashimoto's thyroiditis did not significantly affect the cIMT value in the studied population.
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Affiliation(s)
- Barbara Głowinska-Olszewska
- Department of Pediatrics, Endocrinology, Diabetology With Cardiology Division, Medical University of Białystok, Białystok, Poland
- *Correspondence: Barbara Głowinska-Olszewska
| | - Hanna Borysewicz-Sańczyk
- Department of Pediatrics, Endocrinology, Diabetology With Cardiology Division, Medical University of Białystok, Białystok, Poland
| | - Beata Sawicka
- Department of Pediatrics, Endocrinology, Diabetology With Cardiology Division, Medical University of Białystok, Białystok, Poland
| | - Bożenna Klonowska
- Department of Clinical Pediatrics, Faculty of Medical Sciences, Specialist Children's Hospital, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | - Dorota Charemska
- Department of Clinical Pediatrics, Faculty of Medical Sciences, Specialist Children's Hospital, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
| | | | - Artur Bossowski
- Department of Pediatrics, Endocrinology, Diabetology With Cardiology Division, Medical University of Białystok, Białystok, Poland
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Zhou YY, Qiu HM, Yang Y, Han YY. Analysis of risk factors for carotid intima-media thickness in patients with type 2 diabetes mellitus in Western China assessed by logistic regression combined with a decision tree model. Diabetol Metab Syndr 2020; 12:8. [PMID: 32015760 PMCID: PMC6988356 DOI: 10.1186/s13098-020-0517-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/10/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in patients with type 2 diabetes (T2DM). Carotid intima-media thickness (CIMT) is considered a preclinical stage of atherosclerosis. Therefore, it is necessary to identify the related risk factors for CIMT to facilitate the early prevention of CVD. Previous studies have shown that visceral fat area (VFA) is a risk factor for T2DM and CVD. However, few studies have focused on the effects of VFA on CIMT associated with T2DM. Moreover, considering that the body fat distribution shows regional and racial heterogeneity, the purpose of this study was to investigate the predictive value of VFA and other risk factors for CIMT associated with T2DM in Western China. METHODS In a cross-sectional study, a total of 1372 patients with T2DM were divided into the CIMT (-) group (n = 965) and the CIMT (+) group (n = 407) based on CIMT values. In addition to the univariate analyses, logistic regression analysis and a decision tree model were simultaneously performed to establish a correlation factor model for CIMT. RESULTS Univariate analyses showed that sex, smoking status, age, heart rate, systolic blood pressure (SBP), diastolic blood pressure (DBP), height, weight, body mass index (BMI), waist circumference, hip circumference, waist-hip ratio, VFA, subcutaneous fat area, and the levels of 2-h C-peptide, serum creatinine, urea nitrogen and uric acid were significantly different between the two groups (all p < 0.05). Smoking, increased VFA, female sex and increased BMI were risk factors in the logistic regression analyses (OR = 5.759, OR = 1.364, OR = 2.239, OR = 1.186, respectively). In the decision tree model, smoking was the root node, followed by sex, waist circumference, VFA and chronic kidney disease (CKD) in order of importance. CONCLUSIONS In addition to smoking, sex and BMI, VFA has a significant effect on CIMT associated with T2DM in the Chinese Han population in Western China. In addition, the decision tree model could help clinicians make more effective decisions, with its simplicity and intuitiveness, making it worth promoting in future medical research.Trial registration ChiCTR, ChiCTR1900027739. Registered 24 November 2019-Retrospectively registered, http://www.chictr.org.cn/index.aspx.
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Affiliation(s)
- Yuan-Yuan Zhou
- Department of Endocrinology and Metabolism, Fourth Affiliated Hospital of Kunming Medical University, The Second People’s Hospital of Yunnan Province, Kunming, 650021 China
- Department of Endocrinology and Metabolism, Sixth Affiliated Hospital of Kunming Medical University, The People’s Hospital of Yuxi City, Yuxi, 653100 China
| | - Hong-Mei Qiu
- Department of Endocrinology and Metabolism, Sixth Affiliated Hospital of Kunming Medical University, The People’s Hospital of Yuxi City, Yuxi, 653100 China
| | - Ying Yang
- Department of Endocrinology and Metabolism, Fourth Affiliated Hospital of Kunming Medical University, The Second People’s Hospital of Yunnan Province, Kunming, 650021 China
| | - Yuan-Yuan Han
- Center of Tree Shrew Germplasm Resources, Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650021 China
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Neves JS, Vale C, von Hafe M, Borges-Canha M, Leite AR, Almeida-Coelho J, Lourenço A, Falcão-Pires I, Carvalho D, Leite-Moreira A. Thyroid hormones and modulation of diastolic function: a promising target for heart failure with preserved ejection fraction. Ther Adv Endocrinol Metab 2020; 11:2042018820958331. [PMID: 33088475 PMCID: PMC7543162 DOI: 10.1177/2042018820958331] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Accepted: 08/20/2020] [Indexed: 12/16/2022] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a clinical syndrome with high mortality for which there is no proven therapy to improve its prognosis. Thyroid dysfunction is common in heart failure (HF) and is associated with worse prognosis. In this review, we discuss the cardiovascular effects of thyroid hormones, the pathophysiology of HFpEF, the prognostic impact of thyroid function, and the potential of thyroid hormones for treatment of HFpEF. Thyroid hormones have a central role in cardiovascular homeostasis, improving cardiac function through genomic and non-genomic mechanisms. Both overt and subclinical hypothyroidism are associated with increased risk of HF. Even when plasmatic thyroid hormones levels are normal, patients with HF may have local cardiac hypothyroidism due to upregulation of type 3 iodothyronine deiodinase. Thyroid hormones improve several pathophysiological mechanisms of HFpEF, including diastolic dysfunction and extra-cardiac abnormalities. Supplementation with thyroid hormones (levothyroxine and/or liothyronine), modulation of deiodinase activity, and heart-specific thyroid receptor agonists are potential therapeutic approaches for the treatment of HFpEF. Further preclinical and clinical studies are needed to clarify the role of thyroid hormones in the treatment of HFpEF.
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Affiliation(s)
- João Sérgio Neves
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
- Department of Endocrinology, Diabetes and
Metabolism, Centro Hospitalar Universitário de São João, Faculdade de
Medicina, Universidade do Porto, Porto, Portugal
| | - Catarina Vale
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - Madalena von Hafe
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - Marta Borges-Canha
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
- Department of Endocrinology, Diabetes and
Metabolism, Centro Hospitalar Universitário de São João, Faculdade de
Medicina, Universidade do Porto, Porto, Portugal
| | - Ana Rita Leite
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - João Almeida-Coelho
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - André Lourenço
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - Inês Falcão-Pires
- Departamento de Cirurgia e Fisiologia, Unidade
de Investigação Cardiovascular, Faculdade de Medicina, Universidade do
Porto, Porto, Portugal
| | - Davide Carvalho
- Department of Endocrinology, Diabetes and
Metabolism, Centro Hospitalar Universitário de São João, Faculdade de
Medicina, Universidade do Porto, Porto, Portugal
- Instituto de Investigação e Inovação em Saúde
da Universidade do Porto, Portugal
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The effect of levothyroxine treatment in individuals with subclinical hypothyroidism on surrogate markers of atherosclerosis: a meta-analysis of randomized controlled trials. J Community Hosp Intern Med Perspect 2019; 9:305-309. [PMID: 31528277 PMCID: PMC6735337 DOI: 10.1080/20009666.2019.1625704] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Accepted: 05/24/2019] [Indexed: 12/30/2022] Open
Abstract
Introduction: Subclinical hypothyroidism is associated with increased carotid intima media thickness (CIMT) and decreased flow-mediated dilation (FMD) – surrogate markers of subclinical atherosclerotic cardiovascular disease (ASCVD). However, treatment with levothyroxine in this population remains controversial. Methods: Electronic database search was conducted for all randomized clinical trials (RCTs) that evaluated the treatment of subclinical hypothyroidism on surrogate markers of subclinical ASCVD. The primary and secondary outcomes were the mean change of CIMT and FMD, respectively. We calculated the weighted mean differences (MDs) and 95% confidence intervals (CIs) using the inverse variance random-effects method for continuous data. Results: Seven RCTs were identified with a total of 541 patients. There were 115 males and the mean age was 54.5 ± 18.7 years with mean baseline thyroid-stimulating hormone of 6.78 ± 2.5. There were no differences between levothyroxine-treated patients and placebo with regard to CIMT differences (MD −0.02; 95% CI −0.08–0.04; P = 0.49; I2 = 59%). However, the levothyroxine-treated group was associated with significantly increased FMD compared with placebo (MD 1.61; 95% CI 1.21–2.01; P < 0.01; I2 = 0%). Conclusions: Among patients with subclinical hypothyroidism, levothyroxine treatment was associated with significant improvement in FMD but not CIMT. Large, adequately powered trials with long-term follow-up are needed.
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Abstract
IMPORTANCE Subclinical hypothyroidism, defined as an elevated serum thyrotropin (often referred to as thyroid-stimulating hormone, or TSH) level with normal levels of free thyroxine (FT4) affects up to 10% of the adult population. OBSERVATIONS Subclinical hypothyroidism is most often caused by autoimmune (Hashimoto) thyroiditis. However, serum thyrotropin levels rise as people without thyroid disease age; serum thyrotropin concentrations may surpass the upper limit of the traditional reference range of 4 to 5 mU/L among elderly patients. This phenomenon has likely led to an overestimation of the true prevalence of subclinical hypothyroidism in persons older than 70 years. In patients who have circulating thyroid peroxidase antibodies, there is a greater risk of progression from subclinical to overt hypothyroidism. Subclinical hypothyroidism may be associated with an increased risk of heart failure, coronary artery disease events, and mortality from coronary heart disease. In addition, middle-aged patients with subclinical hypothyroidism may have cognitive impairment, nonspecific symptoms such as fatigue, and altered mood. In the absence of large randomized trials showing benefit from levothyroxine therapy, the rationale for treatment is based on the potential for decreasing the risk of adverse cardiovascular events and the possibility of preventing progression to overt hypothyroidism. However, levothyroxine therapy may be associated with iatrogenic thyrotoxicosis, especially in elderly patients, and there is no evidence that it is beneficial in persons aged 65 years or older. CONCLUSIONS AND RELEVANCE Subclinical hypothyroidism is common and most individuals can be observed without treatment. Treatment might be indicated for patients with subclinical hypothyroidism and serum thyrotropin levels of 10 mU/L or higher or for young and middle-aged individuals with subclinical hypothyroidism and symptoms consistent with mild hypothyroidism.
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Affiliation(s)
- Bernadette Biondi
- Department of Clinical Medicine and Surgery, University of Naples Federico II, Naples, Italy
| | - Anne R Cappola
- Perelman School of Medicine, Division of Endocrinology, Diabetes, and Metabolism, the University of Pennsylvania, Philadelphia
- Associate Editor
| | - David S Cooper
- Division of Endocrinology, Diabetes, and Metabolism, The Johns Hopkins University School of Medicine, Baltimore, Maryland
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Abstract
OBJECTIVES There is an increasing prevalence of hypothyroidism and there is a growing body of meta-analyses (MAs) on the association between hypothyroidism and other diseases. However, the methodological quality of the MAs significantly varies. Thus, this study aimed to evaluate and summarise data on the methodological quality of MAs on the associations between hypothyroidism and other diseases using the Assessment of Multiple Systematic Reviews (AMSTAR) scale, providing suggestions for clinical decision-making processes. DESIGN To assess the methodological quality of MAs using the AMSTAR scale. DATA SOURCES A systematic literature search was performed in PubMed, EMBASE, the Cochrane Library, web of science and Chinese Biomedicine Literature Database. ELIGIBILITY CRITERIA We included MAs that had assessed the association between hypothyroidism and other diseases in humans and that had full texts regardless of the publication status. No restriction applied on language or date. DATA EXTRACTION AND SYNTHESIS Two reviewers independently screened the titles and abstracts of all searched literature to acquire potentially eligible publications. The full texts of possible eligible publications were downloaded and assessed. Inconsistent comments were resolved through discussions with a third reviewer. RESULTS 52 studies were included. The average AMSTAR score of the included articles was 8.6 (range: 5-10), and those of English and Chinese MAs were 8.8 and 7.0, respectively. A total of 52 MAs were evaluated, and 19 (36.5%) and 33 (63.5%) of these MAs were of moderate and high quality, respectively. None of the MAs were of low quality. Only two MAs had an a priori design. Items 3, 5 and 9 had the highest compliance (50/52, 96.2%), and aside from item 1, items 7 and 8 had the lowest compliance (33/52,63.5%). According to the results of these MAs, hypothyroidism was significantly associated with cardiovascular diseases, metabolic diseases, neuropsychiatric disorders, breast cancer and pregnancy outcome. CONCLUSIONS The methodological quality of the included MAs on the association between hypothyroidism and other diseases was moderate to high. MAs with high qualities confirmed that hypothyroidism was significantly associated with cardiovascular diseases, metabolic syndrome, preterm birth and neonatal outcomes. Consideration of scientific quality when formulating conclusions should be made explicit and more attention should be paid to improving the methodological quality of MAs, and increasing their applicability for clinical decision-making.
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Affiliation(s)
- Limin Tian
- School of Medicine, Lanzhou University, Lanzhou, China
- Department of Endocrinology (cadre ward 3), Gansu Provincial Hospital, Lanzhou, China
- Clinical Research Center for Metabolic Diseases, Gansu Provincial Hospital, Lanzhou, China
| | - Feifei Shao
- Department of Endocrinology (cadre ward 3), Gansu Provincial Hospital, Lanzhou, China
- Clinical Research Center for Metabolic Diseases, Gansu Provincial Hospital, Lanzhou, China
| | - Yahong Qin
- Department of Endocrinology (cadre ward 3), Gansu Provincial Hospital, Lanzhou, China
- Clinical Research Center for Metabolic Diseases, Gansu Provincial Hospital, Lanzhou, China
| | - Qian Guo
- Department of Endocrinology (cadre ward 3), Gansu Provincial Hospital, Lanzhou, China
- Clinical Research Center for Metabolic Diseases, Gansu Provincial Hospital, Lanzhou, China
| | - Cuixia Gao
- Clinical Research Center for Metabolic Diseases, Gansu Provincial Hospital, Lanzhou, China
- Department of Ultrasonic Diagnosis, Gansu Provincial Hospital, Lanzhou, China
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Stamatouli A, Bedoya P, Yavuz S. Hypothyroidism: Cardiovascular Endpoints of Thyroid Hormone Replacement. Front Endocrinol (Lausanne) 2019; 10:888. [PMID: 31998229 PMCID: PMC6962138 DOI: 10.3389/fendo.2019.00888] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 12/04/2019] [Indexed: 12/11/2022] Open
Abstract
Thyroid dysfunction, either thyrotoxicosis or hypothyroidism, represents an important cardiovascular risk factor. Heart disease is the leading cause of death for men and women in the United States. Cardiovascular disease is multifactorial and many efforts have been made to assess precipitants for optimal guideline-based, primary, and secondary prevention. Thyroid hormone receptors are present in the myocardium and endothelium, and small alterations in its levels could have significant effects in cardiac function. Specifically, overt hypothyroidism is associated with an increased risk for atherosclerotic cardiovascular disease due to metabolic and hemodynamic effects. Several concomitant factors like impaired lipid profile, low-grade chronic inflammatory state, increased oxidative stress and increased insulin resistance enforce this relationship. The last decade has seen a renewed interest on the impact of subclinical hypothyroidism on the cardiovascular system and whether or not it should be treated. The aim of this review is to provide current evidence of the effect of thyroid hormone replacement, either with levothyroxine mono-therapy or in combination with liothyronine, on specific cardiovascular parameters.
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Kong SH, Yoon JW, Kim SY, Oh TJ, Park KH, Choh JH, Park YJ, Lim C. Subclinical Hypothyroidism and Coronary Revascularization After Coronary Artery Bypass Grafting. Am J Cardiol 2018; 122:1862-1870. [PMID: 30327128 DOI: 10.1016/j.amjcard.2018.08.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/07/2018] [Accepted: 08/20/2018] [Indexed: 01/07/2023]
Abstract
We aimed to investigate long-term cardiovascular sequelae after coronary artery bypass grafting (CABG) in patients with subclinical hypothyroidism (SCH). All-cause and cardiovascular-related mortality, and cardiovascular events were retrospectively reviewed in 222 euthyroid and 36 SCH patients who underwent CABG. During a mean follow-up period of 8.2 ± 4.1 years, there were 90 incidents of all-cause deaths, 20 cardiovascular-related deaths, 70 major cardiovascular adverse events, 6 myocardial infarctions, 12 unstable anginas, 31 strokes, 23 hospitalizations due to heart failure, 15 atrial fibrillation (AF) events, and 27 coronary revascularizations. The incidence rate of coronary revascularization was significantly higher in patients with SCH (n = 6, 16.6%) than in euthyroid patients (n = 20, 9.0%), with a hazard ratio (HR) of 3.179 (95% confidence interval [CI] 1.174, 8.605; p = 0.023) after adjustment. In subgroup analysis, SCH patients who experienced postoperative AF within 3 months after CABG surgery had a significantly higher risk of coronary revascularization (n = 4, 25.0%) than euthyroid patients without AF (n = 14, 8.9%) after adjustment (HR 11.759, 95% CI 2.747, 50.343, p = 0.001). The frequency of fatal or nonfatal unstable angina was also higher in patients with SCH (n = 2, 12.5%) than in euthyroid patients (n = 4, 2.5%) (HR 16.999, 95% CI 2.242, 128.860, p = 0.006). In conclusion, preoperative SCH is associated with less favorable cardiovascular outcomes, especially coronary revascularization after CABG. Moreover, SCH patients who develop postoperative AF exhibit significantly increased risks of unstable angina and coronary revascularization. Preoperative evaluation of thyroid function may be helpful for predicting long-term outcomes after CABG.
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29
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Visceral Adiposity Index Levels in Patients with Hypothyroidism. J Natl Med Assoc 2018; 110:606-613. [DOI: 10.1016/j.jnma.2018.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/28/2018] [Accepted: 03/29/2018] [Indexed: 12/30/2022]
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Valamparampil MJ, Mohan A, Jose C, Sadheesan DK, Aby JJ, Vasudevakaimal P, Varghese S, Surendrannair AT, Ashokan AL, Madhusoodhanan RS, Ilyas IS, Rajeevan A, Karthikeyan SB, Devadhas KS, Raghunath R, Surendran S, Muraleedharanpillai H, Nujum ZT. Role of Geographic Information System in Assessing Determinants of Cardiovascular Disease: An Experience From a Low- and Middle-Income Country. Asia Pac J Public Health 2018; 30:351-360. [PMID: 29649883 DOI: 10.1177/1010539518768333] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cardiovascular disease (CVD) is the leading cause of morbidity and mortality in the world. The determinants of CVD in an urban population using conventional and geographic information system techniques were attempted as a community-based census-type cross-sectional study in Kerala, India, among 1649 individuals residing in 452 households. Sociodemographic details, risk factor exposures, and self-reported disease prevalence were determined. Location of houses, wells from which subjects drew drinking water, and distances of the house from the outer road (proxy for air pollution) were mapped using differential global positioning system and pH of water samples determined. Prevalence of CVD was 5.8%. Significant predictors of CVD were male gender, diabetes mellitus, hypertension, and hypothyroidism. Statistically significant spatial association was found between CVD and groundwater pH. Geographic information system technology is useful in identification of spatial clustering and disease hotspots for designing preventive strategies targeting CVD.
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Affiliation(s)
| | - Ananth Mohan
- 1 Government Medical College Hospital, Thiruvananthapuram, Kerala, India
| | - Chinu Jose
- 2 University of Kerala, Thiruvananthapuram, Kerala, India
| | | | - Jemin Jose Aby
- 1 Government Medical College Hospital, Thiruvananthapuram, Kerala, India
| | | | - Sara Varghese
- 3 Government Medical College Hospital, Kollam, Kerala, India
| | | | | | | | | | - Amjith Rajeevan
- 5 Directorate of Health Services, Government of Kerala, Pathanamthitta, Kerala, India
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He W, Li S, Zhang JA, Zhang J, Mu K, Li XM. Effect of Levothyroxine on Blood Pressure in Patients With Subclinical Hypothyroidism: A Systematic Review and Meta-Analysis. Front Endocrinol (Lausanne) 2018; 9:454. [PMID: 30154757 PMCID: PMC6103239 DOI: 10.3389/fendo.2018.00454] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 07/24/2018] [Indexed: 12/18/2022] Open
Abstract
Background: Patients with subclinical hypothyroidism (SCH) have elevated blood pressure, but the effect of levothyroxine (LT4) therapy on blood pressure among those patients is still unclear. This study aimed to assess whether LT4 therapy could reduce blood pressure in SCH patients through a systematic review and meta-analysis. Methods: PubMed, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), and Web of Science were searched. Randomized controlled trials (RCTs) assessing the effect of LT4 therapy on blood pressure or prospective follow-up studies comparing the blood pressure level before and after LT4 treatment were included, and the mean difference of systolic blood pressure (SBP) or diastolic blood pressure (DBP) was pooled using random-effect meta-analysis. Results: Twenty-nine studies including 10 RCTs and 19 prospective follow-up studies were eligible for the analysis. Meta-analysis of 10 RCTs suggested that LT4 therapy could significantly reduce SBP in SCH patients by 2.48 mmHg (95% CI -4.63 to -0.33, P = 0.024). No heterogeneity was observed among these 10 RCTs (I2 = 0%). Meta-analysis of the 19 prospective follow-up studies found that LT4 therapy significantly decreased SBP and DBP by 4.80 mmHg (95%CI -6.50 to -3.09, P < 0.001) and 2.74 mmHg (95%CI -4.06 to -1.43, P < 0.001), respectively. Conclusion: The findings suggest that LT4 replacement therapy can reduce blood pressure in SCH patients, which needs to be validated in more clinical trials with larger samples.
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Affiliation(s)
- Weiwei He
- Department of Endocrinology, Affiliated Hospital of Yanan Medical University, Shaanxi, China
| | - Sheli Li
- Department of Endocrinology, Affiliated Hospital of Yanan Medical University, Shaanxi, China
| | - Jin-an Zhang
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Jing Zhang
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Kaida Mu
- Department of Endocrinology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Xin-ming Li
- Department of Cardiology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
- *Correspondence: Xin-ming Li
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Tanaka Y, Furusyo N, Kato Y, Ueyama T, Yamasaki S, Ikezaki H, Murata M, Hayashi J. Correlation between Thyroid Stimulating Hormone and Renal Function in Euthyroid Residents of Japan: Results from the Kyushu and Okinawa Population Study (KOPS). J Atheroscler Thromb 2017; 25:335-343. [PMID: 29046502 PMCID: PMC5906186 DOI: 10.5551/jat.41251] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Aim: The present large-scale Japanese population study was performed to evaluate the relation between the serum thyroid stimulating hormone (TSH) level and renal function. Methods: Out of 1,374 residents who participated in a free public physical examination between 2010 and 2011, we evaluated the data of 888 participants for whom the serum TSH level and estimated glomerular filtration rate (eGFR) were successfully measured. The participants were categorized into three groups based on TSH levels (normal TSH, ≤ 2.4; high-normal TSH, 2.5–4.4; and subclinical hypothyroid, ≥ 4.5 µIU/mL). Multiple linear regression analysis adjusted for cardiovascular risk factors was performed to determine the relationship between serum TSH level and renal function. Results: The mean ± SD TSH level was 2.0 ± 1.4 µIU/mL, and 75.9% (n = 674) of the participants had normal, 17.9% (n = 159) had high-normal, and 6.2% (n = 55) had subclinical hypothyroid TSH levels. The mean eGFR significantly decreased with increased TSH levels (normal TSH, 79.3 ± 14.1; high-normal TSH, 77.4 ± 13.0; and subclinical hypothyroid, 72.3 ± 12.2 mL/min/1.73 m2: P for trend < 0.01). Multiple linear regression analysis extracted log-transformed TSH level as an independent factor correlated with eGFR in the high-normal TSH group (beta = −0.18, P = 0.02). Conclusions: Our findings demonstrated a significant correlation between serum TSH levels and eGFR in high-normal TSH participants. In healthy individuals, high-normal TSH levels indicate increased the risk of chronic kidney disease.
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Affiliation(s)
- Yuki Tanaka
- Department of General Internal Medicine, Kyushu University Hospital.,Department of Environmental Medicine and Infectious Disease, Graduate School of Medical Sciences, Kyushu University
| | - Norihiro Furusyo
- Department of General Internal Medicine, Kyushu University Hospital.,Department of Environmental Medicine and Infectious Disease, Graduate School of Medical Sciences, Kyushu University
| | - Yoshifumi Kato
- Department of General Internal Medicine, Kyushu University Hospital.,Department of Environmental Medicine and Infectious Disease, Graduate School of Medical Sciences, Kyushu University
| | - Takatsugu Ueyama
- Department of General Internal Medicine, Kyushu University Hospital.,Department of Environmental Medicine and Infectious Disease, Graduate School of Medical Sciences, Kyushu University
| | - Sho Yamasaki
- Department of General Internal Medicine, Kyushu University Hospital.,Department of Environmental Medicine and Infectious Disease, Graduate School of Medical Sciences, Kyushu University
| | - Hiroaki Ikezaki
- Department of General Internal Medicine, Kyushu University Hospital
| | - Masayuki Murata
- Department of General Internal Medicine, Kyushu University Hospital
| | - Jun Hayashi
- Kyushu General Internal Medicine Center, Haradoi Hospital
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