scholarly journals Vitamin D, Thyroid Hormones and Cardiovascular Risk: Exploring the Components of This Novel Disease Triangle

2021 ◽  
Vol 12 ◽  
Author(s):  
Cristina Vassalle ◽  
Alessandra Parlanti ◽  
Alessandro Pingitore ◽  
Sergio Berti ◽  
Giorgio Iervasi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Thyroid Hormones ◽  
Thyroid Autoimmunity ◽  
Cell Activity ◽  
Cardiometabolic Disease ◽  
Clinical Effects ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Thyroid Profile ◽  
Peripheral Conversion

The role of thyroid hormones (THs) in the cardiovascular (CV) system, through several direct and indirect effects is recognized. Even very small modification in TH levels (as those observed in subclinical hypothyroidism or hyperthyroidism, and low triiodothyronine syndrome) may adversely affect the CV system, whereas thyroid hormones benefit the CV system and improve the prognosis. There is also evidence of vitamin D effects on cardiometabolic disease (e.g., through modulation of endothelial and smooth muscle cell activity, renin-angiotensin-aldosterone system, nitric oxide, oxidative stress, and inflammatory response), as well as an association between vitamin D [25(OH)D] deficiency and autoimmune thyroid diseases or cancer, and a relationship between vitamin D concentration and titers of antibodies and thyroid autoimmunity replacement. Interestingly, experimental data indicate a direct effect of vitamin D on Type 2 deiodinase expression causing subsequential peripheral conversion of T4 into T3. However, the functional links among THs, vitamin D and the cardiovascular system, and clinical effects of coexisting abnormalities in this new troublesome triad, have not yet been reviewed. The main aim of this review is to discuss pathophysiology of this relationship, proposing new mechanistic insights involving vitamin D in the modulation of cardiometabolic disease and thyroid profile.

scholarly journals Modern problems of thyroidology

2019 ◽  
Vol 45 (1) ◽  
pp. 3-8 ◽  
Author(s):  
V. I. Kandror
Keyword(s):  
Thyroid Hormones ◽  
Molecular Mechanisms ◽  
Thyroid Diseases ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Endocrine Diseases

Modern reports about molecular mechanisms of the effects of thyroid hormones and the pathogenesis of autoimmune thyroid diseases are reviewed. The significance of fundamental studies in thyroidology for deciphering the pathogenesis of the most prevalent endocrine and other than endocrine diseases is emphasized.

Vitamin D and autoimmune thyroid diseases (part 1)

2021 ◽  
pp. 6-15
Author(s):  
N. V. Volkova ◽  
A. V. Solntseva
Keyword(s):  
Vitamin D ◽  
Autoimmune Diseases ◽  
Immune Cells ◽  
Therapeutic Potential ◽  
Immunosuppressive Agents ◽  
Thyroid Tissue ◽  
Thyroid Diseases ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Autoimmune Pathology

Autoimmune thyroiditis (AIT) and Graves’ disease (GD) are common autoimmune diseases, and their prevalence assessed as 5 % of general population. Currently, selective immunosuppressive agents for pathogenetic treatment of autoimmune pathology are being developed. Vitamin D with the known anti­inflammatory and immunoregulatory properties, is also of great interest. The first part of the article reviews the roles of various immune cells in the pathogenesis of autoimmune thyroid diseases, which is necessary to reveal the therapeutic potential of calcitriol in these disorders. Classically, AIT was considered to be mediated by T­helpers type 1 (Th1), and GD — by T­helpers type 2 (Th2). This misunderstanding was based on the idea that humoral immunity is controlled by Th2 cytokines, and cellular immunity — by Th1. In the past decades, the role of new subsets of immune cells in the pathogenesis of autoimmune thyroid diseases is being studied, displacing the traditional paradigm of Th1/Th2 dichotomy. It has been established that T­helpers type 17 (Th17) play an important role in the development of various inflammatory and autoimmune diseases, previously classified as Th1­dependent pathologies. The involvement of T­ and B­regulatory lymphocytes in the autoimmune process is also of particular interest. It was found that these cells accumulate in inflamed thyroid tissue in patients with thyroid pathology, but they are unable to suppress the immune response effectively. Further research will help to find out which immune cells can become targets for vitamin D agonists in the complex treatment of autoimmune diseases.

scholarly journals High Prevalence of Antinuclear Antibodies in Children with Thyroid Autoimmunity

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Maria Segni ◽  
Ida Pucarelli ◽  
Simona Truglia ◽  
Ilaria Turriziani ◽  
Chiara Serafinelli ◽  
...  
Keyword(s):  
Autoimmune Diseases ◽  
Rheumatic Diseases ◽  
Antinuclear Antibodies ◽  
Pediatric Patients ◽  
Thyroid Autoimmunity ◽  
Disease Onset ◽  
Nuclear Antigen ◽  
Chronic Lymphocytic Thyroiditis ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid

Background. Antinuclear antibodies (ANA) are a hallmark of many autoimmune diseases and can be detected many years before disease onset. Autoimmune thyroid diseases (AITD) are frequently associated with other organ- and non-organ-specific autoimmune disorders.Objectives. To assess the prevalence of ANA in pediatric patients with AITD and their clinical correlations.Methods. Ninety-three consecutive pediatric patients with AITD were enrolled (86 children with chronic lymphocytic thyroiditis and 7 with Graves’ disease). ANA, anti-double DNA (anti-dsDNA) antibodies, anti-extractable nuclear antigen (anti-ENA), anti-cyclic citrullinated peptide antibodies (anti-CCP), and rheumatoid factor (RF) was obtained. Signs and symptoms potentially related to rheumatic diseases in children were investigated by a questionnaire.Results. ANA positivity was found in 66/93 children (71%), anti-ENA in 4/93 (4.3%), anti-dsDNA in 1/93 (1.1%), RF in 3/93 (3.2%), and anti-CCP in none. No significant differences were found between the ANA-positive and ANA-negative groups with respect to age, sex, L-thyroxine treatment, or prevalence of other autoimmune diseases. Overall, parental autoimmunity was found in 23%.Conclusions. ANA positivity was demonstrated in 71% of children with AITD. ANA positivity was not related to overt immune-rheumatic diseases. However, because the positivity of ANA can occur even many years before the onset of systemic autoimmune diseases, prospective studies are warranted.

RELATIONSHIP OF VITAMIN D DEFICIENCY AND AUTOIMMUNE THYROID DISEASES

2011 ◽  
Vol 22 ◽  
pp. S87 ◽  
Author(s):  
Gulbuz Sezgin ◽  
M. Esref Ozer ◽  
Oya Uygur Bayramicli ◽  
A. Melih Ozel ◽  
Fehime Aksungar ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Thyroid Diseases ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Relationship Of

scholarly journals Immunological Mechanisms of Autoimmune Thyroid Diseases: A Shift in The Traditional TH1/TH2 Paradigm

2019 ◽  
Vol 73 (2) ◽  
pp. 67-77
Author(s):  
Tatjana Zaķe ◽  
Sandra Skuja ◽  
Aivars Lejnieks ◽  
Valērija Groma ◽  
Ilze Konrāde
Keyword(s):  
Thyroid Autoimmunity ◽  
Treg Cells ◽  
Thyroid Diseases ◽  
Autoimmune Response ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Th17 Lymphocytes ◽  
Immunological Mechanisms ◽  
Thyroid Autoantigens ◽  
The Impact

Abstract Autoimmune thyroid diseases (AITD) mainly include Hashimoto’s thyroiditis (HT) and Graves’ disease (GD), which are characterised by the presence of circulating antibodies against various thyroid autoantigens and infiltration of the thyroid gland by autoreactive lymphocytes. Despite the significant advancement in the knowledge of AITD pathogenesis in the last decade, the specific immunological mechanisms responsible for development of the disease are not thoroughly understood. Classically, HT has long been considered as a T helper (Th)1-mediated disease, while a Th2-driven autoimmune response is dominant for GD development. However, this classification has changed due to the description of Th17 lymphocytes, which suggested participation of these cells in AITD, particularly HT pathogenesis. Moreover, a shift in the balance between Th17 and T regulatory (Treg) cells has been observed in thyroid autoimmunity. We have observed overexpression of IL-17, the prominent effector cytokine of Th17, within thyroid tissues from HT and GD patients in our studies. The present review will focus on recent data regarding the role of Treg and Th17 lymphocytes in AITD pathogenesis. In addition, the impact and proposed mechanisms of the predominant environmental factors triggering the autoimmune response to the thyroid will be discussed.

scholarly journals Vitamin D and Autoimmune Thyroid Diseases - a Review

Folia Medica ◽  
2020 ◽  
Vol 62 (2) ◽  
pp. 223-229
Author(s):  
Mariya Zh. Miteva ◽  
Boyan I. Nonchev ◽  
Maria M. Orbetzova ◽  
Snejana D. Stoencheva
Keyword(s):  
Vitamin D ◽  
Lupus Erythematosus ◽  
Thyroid Tissue ◽  
Vitamin D Supplementation ◽  
Thyroid Diseases ◽  
Autoimmune Thyroid Diseases ◽  
Local Synthesis ◽  
Autoimmune Thyroid ◽  
Vitamin D Receptors ◽  
The Impact

The essential biological action of vitamin D is regulation of calcium and phosphorus metabolism and preserving bone health. In recent years there have been reports about the extraskeletal actions of vitamin D and its role in the regulation of immune system. Vitamin D supplementation appears to reduce the incidence of cardiovascular diseases, cancer, and infections and be able to reduce all-cause mortality. Deficiency of vitamin D has been found to correlate with the increased incidence of autoimmune diseases, including type 1 diabetes mellitus, rheumatoid arthritis, systemic lupus erythematosus, multiple sclerosis. Autoimmune thyroid diseases (AITD), including Graves’ disease, Hashimoto’s thyroiditis are relatively common autoimmune disorders affecting more than 5% of general population. It has been shown that vitamin D receptors (VDR) and 1-alpha hydroxylase are expressed in papillary thyroid cancer and normal thyroid tissue, suggesting local synthesis of 1,25(OH)2D in the thyroid. While VDR gene polymorphism has been found in much research to be associated with AITDs, very few studies have examined the impact of vitamin D deficiency on the incidence of AITDs in humans with conflicting results. This review focuses on the association between vitamin D and autoimmune thyroid diseases and summarizes the results of vitamin D supplementation studies in patients with AITD.

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