scholarly journals Genotype association of IP6K3 gene with Hashimoto’s thyroiditis in Algerian population (Aures region)

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Warda Kherrour ◽  
Dean Kalicanin ◽  
Luka Brčić ◽  
Leila Hambaba ◽  
Mouloud Yahia ◽  
...  
Keyword(s):  
Genetic Variants ◽  
Hashimoto’S Thyroiditis ◽  
Genome Wide Association Study ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Genotype Distribution ◽  
Algerian Population ◽  
Nominal Significance ◽  
Caucasian Origin ◽  
Genotypic Association

Abstract Background Hashimoto’s thyroiditis (HT) is a chronic autoimmune disease of the thyroid gland and is also the main cause of hypothyroidism. A recent genome-wide association study (GWAS) suggested an association of three novel genetic variants with HT in a population of Caucasian origin (Croatian). A case-control study was performed to investigate the association of these three newly suggested genetic variants with HT in a non-Caucasian ethnic group, an Arab-Berber from Algeria. Three variants (rs12944194 located 206 kb from SDK2, rs791903 inside IP6K3, and rs75201096 inside GNA14) were genotyped using real-time PCR. Results There were no significant differences in allele frequencies of the three genetic variants between HT cases and controls. However, the present study showed nominal significance in the genotype distribution of rs791903 (IP6K3 gene) between HT patients and the control group (P = 0.024); we observed a decrease in the frequency of rs791903 recessive homozygotes (CC) in HT cases versus controls (OR = 0.476, P = 0.025). Conclusion This is the first study that showed the genotypic association of IP6K3 intronic variant with decreased risk for HT in non-Caucasian, Algerian, population, whereas we did not confirm the association of SDK2 and GNA14 genetic variants with HT. The IP6K3 gene (inositol hexaphosphate kinase 3), located near major histocompatibility complex (MHC), has previously been associated with other common autoimmune diseases beside HT, such as Graves’s disease and rheumatoid arthritis, which is providing more evidence of a good candidacy for the genetic contribution to the development of HT and autoimmunity.

Vitamin D Treatment in Patients with Hashimoto’s Thyroiditis may Decrease the Development of Hypothyroidism

2016 ◽  
Vol 86 (1-2) ◽  
pp. 9-17 ◽  
Author(s):  
Bekir Ucan ◽  
Mustafa Sahin ◽  
Muyesser Sayki Arslan ◽  
Nujen Colak Bozkurt ◽  
Muhammed Kizilgul ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Hashimoto’S Thyroiditis ◽  
Healthy Control Group ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Endocrine Society ◽  
Thyroid Autoantibody ◽  
Healthy Control ◽  
The Mean

Abstract.The relationship between Hashimoto’s thyroiditis and vitamin D has been demonstrated in several studies. The aim of the present study was to evaluate vitamin D concentrations in patients with Hashimoto’s thyroiditis, the effect of vitamin D therapy on the course of disease, and to determine changes in thyroid autoantibody status and cardiovascular risk after vitamin D therapy. We included 75 patients with Hashimoto’s thyroiditis and 43 healthy individuals. Vitamin D deficiency is defined as a 25-hydroxy vitamin D (25(OH)D3) concentration less than 20ng/mL. Vitamin D deficient patients were given 50.000 units of 25(OH)D3 weekly for eight weeks in accordance with the Endocrine Society guidelines. All evaluations were repeated after 2 months of treatment. Patients with Hashimoto’s thyroiditis had significantly lower vitamin D concentrations compared with the controls (9.37±0.69 ng/mL vs 11.95±1.01 ng/mL, p < 0.05, respectively). Thyroid autoantibodies were significantly decreased by vitamin D replacement treatment in patients with euthyroid Hashimoto’s thyroiditis. Also, HDL cholesterol concentrations improved in the euthyroid Hashimoto group after treatment. The mean free thyroxine (fT4) concentrations were 0.89±0.02 ng/dL in patients with Hashimoto’s thyroiditis and 1.07±0.03 ng/dL in the healthy control group (p < 0.001). The mean thyroid volumes were 7.71±0.44 mL in patients with Hashimoto’s thyroiditis and 5.46±0.63 mL in the healthy control group (p < 0.01). Vitamin D deficiency is frequent in Hashimoto’s thyroiditis and treatment of patients with this condition with Vitamin D may slow down the course of development of hypothyroidism and also decrease cardiovascular risks in these patients. Vitamin D measurement and replacement may be critical in these patients.

Vitamin D status in Hashimoto’s thyroiditis and its association with vitamin D receptor genetic variants

2021 ◽  
pp. 105922
Author(s):  
Hany William Z. Hanna ◽  
Cristiano Rizzo ◽  
Radwa Marawan Abdel Halim ◽  
Hemmat Elewa El Haddad ◽  
Randa Salam ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Receptor ◽  
Genetic Variants ◽  
Hashimoto’S Thyroiditis ◽  
Hashimoto's Thyroiditis ◽  
Vitamin D Status

Salivary gland function in women with Hashimoto’s thyroiditis without xerostomia and the correlation with auto-thyroid antibodies

2020 ◽  
Author(s):  
Xiao-an Pang ◽  
Zhi-xiao Wei ◽  
Jun-hong Li ◽  
Xiao-qi Pang
Keyword(s):  
Salivary Gland ◽  
Hashimoto’S Thyroiditis ◽  
Thyroid Stimulating Hormone ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Thyroid Peroxidase ◽  
Thyroid Autoantibody ◽  
Submandibular Glands ◽  
Quantitative Parameters ◽  
Salivary Function

Abstract Background Hashimoto’s thyroiditis (HT) may cause salivary dysfunction in patients resulting in xerostomia, but little is known about changes in salivary function in patients with no obvious dry mouth symptoms. In this study we assessed salivary function in women with HT, who had not experienced xerostomia and, for the first time, evaluated the effects of thyroid auto-antibodies on this function. Methods Sixty consecutive subjects were included, comprising 32 women (mean age, 36 ± 12 years) diagnosed with HT accompanied by differentiated thyroid cancer (DTC) in the study group (HT group), along with a control group (DTC group) of 28 women (mean age, 40 ± 12 years) diagnosed with DTC only. Salivary gland scintigraphy was used to assess salivary function with the semi-quantitative parameters of maximum absorption ratio and maximum secretion ratio, the decrease of which indicate impaired salivary function. Moreover, the HT and DTC groups were divided into four subgroups (Anti– HT, Anti+ HT, Anti– DTC, and Anti+ DTC), based on the presence of anti-thyroid peroxidase antibody (TPOAb) and anti-thyroglobulin antibody (TgAb). Finally, salivary gland semi-quantitative parameters were correlated with levels of thyroid-stimulating hormone (TSH), TGAb, and TPOAb in the HT and DTC groups. Results None of the semi-quantitative parameters examined in parotid or submandibular glands differed significantly between the HT and DTC groups. However, the maximum secretion ratio for the parotid and submandibular glands were significantly different in the subgroup comparison (p < 0.05). Furthermore, the TgAb, TPOAb, and TSH values correlated significantly with salivary excretive function (p ≤ 0.05). Conclusion Women with HT without xerostomia may not have salivary functional impairment during hypothyroidism. Serum thyroid autoantibody and TSH levels may mainly influence salivary excretive function but not uptake function.

scholarly journals Polymorphisms of IKZF3 Gene and Autoimmune Thyroid Diseases: Associated with Graves’ Disease but Not with Hashimoto’s Thyroiditis

2018 ◽  
Vol 45 (5) ◽  
pp. 1787-1796 ◽  
Author(s):  
Ling Li ◽  
Xiaolian Ding ◽  
Xuan Wang ◽  
Qiuming Yao ◽  
Xiaoqing Shao ◽  
...  
Keyword(s):  
Hashimoto’S Thyroiditis ◽  
Zinc Finger Protein ◽  
Thyroid Diseases ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Graves Disease ◽  
Autoimmune Thyroid Diseases ◽  
Autoimmune Thyroid ◽  
Significant Difference ◽  
Proliferation And Differentiation

Background/Aims: The IKZF3 gene encodes a zinc-finger protein that plays an important role in the proliferation and differentiation of B lymphocytes. Autoimmune thyroid diseases (AITDs), mainly include Graves’ disease (GD) and Hashimoto’s thyroiditis (HT), are probably caused by the aberrant proliferation of B cells. The objective of this study was to explore the association between IKZF3 polymorphisms and AITDs. Methods: We examined 915 AITD patients (604 GD and 311 HT) and 814 healthy controls. IKZF3 variants (rs2941522, rs907091, rs1453559, rs12150079 and rs2872507) were tested by PCR-ligase detection reaction. Results: It was manifested that that the minor alleles of the five loci increased susceptibility to GD (p<0.05 for rs2941522, and p<0.01 for rs907091, rs1453559, rs12150079 and rs2872507) but in HT patients, these loci showed no significant difference compared with controls. Similarly, the genotype distributions of GD patients manifested obvious differences in all these loci compared with the control group, whereas no statistical differences were observed between HT patients and controls. Furthermore, bioinformatics tools were used to analyze rs1453559, rs12150079 and rs907091. These variants were believed to be the transcription regulator. Conclusion: It is the first time we reported the association between the IKZF3 polymorphisms and GD, indicating that IKZF3 gene tends to bean important risk factor for the development of GD.

Association of established thyroid peroxidase autoantibody (TPOAb) genetic variants with Hashimoto’s thyroiditis

Autoimmunity ◽  
2016 ◽  
Vol 49 (7) ◽  
pp. 480-485 ◽  
Author(s):  
Luka Brčić ◽  
Ana Barić ◽  
Sanda Gračan ◽  
Dubravka Brdar ◽  
Vesela Torlak Lovrić ◽  
...  
Keyword(s):  
Genetic Variants ◽  
Hashimoto’S Thyroiditis ◽  
Hashimoto's Thyroiditis ◽  
Thyroid Peroxidase

scholarly journals Effect of small doses of iodine on thyroid function in patients with Hashimoto's thyroiditis residing in an area of mild iodine deficiency

1998 ◽  
pp. 23-28 ◽  
Author(s):  
W Reinhardt ◽  
M Luster ◽  
KH Rudorff ◽  
C Heckmann ◽  
S Petrasch ◽  
...  
Keyword(s):  
Thyroid Hormone ◽  
Thyroid Function ◽  
Iodine Deficiency ◽  
Subclinical Hypothyroidism ◽  
Hashimoto’S Thyroiditis ◽  
Thyroid Volume ◽  
Treated Group ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Small Doses

OBJECTIVE: Several studies have suggested that iodine may influence thyroid hormone status, and perhaps antibody production, in patients with autoimmune thyroid disease. To date, studies have been carried out using large amounts of iodine. Therefore, we evaluated the effect of small doses of iodine on thyroid function and thyroid antibody levels in euthyroid patients with Hashimoto's thyroiditis who were living in an area of mild dietary iodine deficiency. METHODS: Forty patients who tested positive for anti-thyroid (TPO) antibodies or with a moderate to severe hypoechogenic pattern on ultrasound received 250 microg potassium iodide daily for 4 months (range 2-13 months). An additional 43 patients positive for TPO antibodies or with hypoechogenicity on ultrasound served as a control group. All patients were TBII negative. RESULTS: Seven patients in the iodine-treated group developed subclinical hypothyroidism and one patient became hypothyroid. Three of the seven who were subclinically hypothyroid became euthyroid again when iodine treatment was stopped. One patient developed hyperthyroidism with a concomitant increase in TBII titre to 17 U/l, but after iodine withdrawal this patient became euthyroid again. Only one patient in the control group developed subclinical hypothyroidism during the same time period. All nine patients who developed thyroid dysfunction had reduced echogenicity on ultrasound. Four of the eight patients who developed subclinical hypothyroidism had TSH concentrations greater than 3 mU/l. In 32 patients in the iodine-treated group and 42 in the control group, no significant changes in thyroid function, antibody titres or thyroid volume were observed. CONCLUSIONS: Small amounts of supplementary iodine (250 microg) cause slight but significant changes in thyroid hormone function in predisposed individuals.

scholarly journals In vivo and in vitro effects of statins on lymphocytes in patients with Hashimoto’s thyroiditis

2005 ◽  
Vol 153 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Sevim Gullu ◽  
Rifat Emral ◽  
Mehmet Bastemir ◽  
Arthur B Parkes ◽  
John H Lazarus
Keyword(s):  
Thyroid Function ◽  
Hashimoto’S Thyroiditis ◽  
Annexin V ◽  
Normal Subjects ◽  
Hashimoto's Thyroiditis ◽  
Control Group ◽  
Cd4 Cells ◽  
Apoptotic Effects

Background: Statins have apoptotic effects on many cell types. Hashimoto’s thyroiditis (HT) is an autoimmune disease in which cell-mediated autoimmune mechanisms are pathogenetically involved. Objective: The aim of this study was to evaluate the in vivo effects of Simvastatin on thyroid function, lymphocyte subtypes and also to investigate the apoptotic effects of Simvastatin, Mevastatin, Pravastatin and Cerivastatin on lymphocytes from patients with HT. Methods: In the first part of the study, 11 patients with HT and subclinical hypothyroidism (SH) were given Simvastatin (20 mg/day) for 8 weeks. Ten patients with SH and HT served as the control group. No treatment was given to controls. Thyroid function, C-reactive protein (CRP) levels and lymphocyte subtypes of both groups were determined before the study and after 8 weeks. In the second part of the study, the apoptotic effects of statins on lymphocytes were evaluated in patients with HT (n = 10) and normal subjects (n = 10) in vitro. Apoptosis was investigated by using Annexin-V and propidium iodide. Lymphocytes from patients and controls were incubated with different concentrations of Simvastatin, Cerivastatin, Mevastatin and Pravastatin. Results: An increase in serum free tri-iodothyronine and free thyroxine levels and a decrease in TSH levels were observed (P < 0.05) with Simvastatin treatment. CD4 + cells and B lymphocytes increased whilst CD8 + cells, natural killer cells and activated T lymphocytes decreased significantly in the treatment group (P < 0.05). The CRP level of the group also decreased with Simvastatin but it did not reach significance (P = 0.057). None of parameters was found to be different from the baseline in the control group. In in vitro experiments, apoptosis was observed in CD3 + (both in CD8 + and CD4 + cells) with all statins in both patient and control samples. Mevalonate, which was used in experiments, reversed apoptosis in some but not all samples. Conclusions: The results of this study suggested that Simvastatin is an immune modulatory agent and improves thyroid function in patients with HT. This effect is probably mediated via lymphocyte apoptosis as demonstrated with in vitro experiments and is not confined to Simvastatin since Mevastatin, Pravastatin and Cerivastatin also induced apoptosis in lymphocytes.

scholarly journals Study of RsaI polymorphism of the ERβ gene in Greek women with endometriosis

2020 ◽  
Vol 19 (3) ◽  
pp. 115-122
Author(s):  
Elli Anagnostou ◽  
Agathi Theodoropoulou ◽  
Despina Mavrogianni ◽  
Athanasios Protopapas ◽  
Peter Drakakis ◽  
...  
Keyword(s):  
Estrogen Receptor ◽  
Control Group ◽  
Genetic Profile ◽  
Genotype Distribution ◽  
Female Population ◽  
Infertile Women ◽  
Caucasian Origin ◽  
Rsai Polymorphism ◽  
Esr2 Gene

Estrogens and estrogen receptors (ERs) play an important role in the pathogenesis of endometriosis. The aim of this study was to investigate the presence of gene polymorphism RsaI in the gene of the estrogen receptor ERβ in the Greek female population, and its distribution in women suffering from endometriosis and in a control group. We included 67 consecutive infertile women of Caucasian origin who were operated laparoscopically in our Gynecological Endoscopy Unit for endometriosis, and 96 women participated as control group. Patients were genotyped for RsaI (G/A, rs1256049) polymorphism in ESR2 exon 5, using real-time PCR. The patients’ genotype distribution did not differ from the control group. There were no women homozygous for the polymorphic allele in neither group. The different genotypes of ESR2 could not be associated with the stage of endometriosis. The data of this study point that in Greek population who had proven endometriosis the determination of RsaI polymorphism of ESR2 gene doesn’t offer any information for the progression of endometriosis, regarding the genetic profile of this particular gene.

Association of established hypothyroidism-associated genetic variants with Hashimoto’s thyroiditis

2017 ◽  
Vol 40 (10) ◽  
pp. 1061-1067 ◽  
Author(s):  
A. Barić ◽  
L. Brčić ◽  
S. Gračan ◽  
V. Torlak Lovrić ◽  
I. Gunjača ◽  
...  
Keyword(s):  
Genetic Variants ◽  
Hashimoto’S Thyroiditis ◽  
Hashimoto's Thyroiditis

scholarly journals Associations between NLRC4 Gene Polymorphisms and Autoimmune Thyroid Disease

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Xuerong Liu ◽  
Xiaogang Bai ◽  
Jing Zhao ◽  
Chaoqun Gao ◽  
Peng Du ◽  
...  
Keyword(s):  
Hashimoto’S Thyroiditis ◽  
Hashimoto's Thyroiditis ◽  
Genotype Distribution ◽  
Healthy Controls ◽  
Dominant Model ◽  
Autoimmune Thyroid Diseases ◽  
Age And Gender ◽  
Autoimmune Thyroid ◽  
And Gender ◽  
Allele Model

Background. Many studies have shown that NLRC4 inflammasome polymorphisms are associated with a variety of autoimmune diseases, but the associations between NLRC4 polymorphisms and autoimmune thyroid diseases (AITDs) are unclear. Our research was aimed at identifying the correlations between NLRC4 polymorphisms and AITDs. Methods. Hi-SNP high-throughput genotyping technology was used for detecting four single-nucleotide polymorphisms (SNPs) of NLRC4 in 1005 AITDs patients (including 629 Graves’ disease and 376 Hashimoto’s thyroiditis) and 781 healthy controls. Results. Compared with healthy controls, the allele frequencies and genotype distribution of rs385076 were statistically related to AITDs (P=0.016 and P=0.048, respectively) and Hashimoto’s thyroiditis (P=0.022 and P=0.046, respectively). Before adjusting for age and gender, rs385076 and AITDs had a significant association in three models of allele model, dominant model, and homozygous model. After adjusting for age and gender, in the above three models, there is still a clear relationship between them. Before adjusting for age and gender, there were prominent discrepancy between rs385076 and Hashimoto’s thyroiditis in the allele model (OR=0.81, 95% CI 0.67-0.97; P=0.021) and the dominant model (OR=0.73, 95% CI 0.57-0.94; P=0.014), after adjusting for age and gender, rs385076 and Hashimoto’s thyroiditis were significantly related to allele model, dominant model, and homozygous model. However, rs455060, rs212704, and rs675712 were not related to AITDs in our study. Conclusion. NLRC4 rs385076 was found to have a significant association with Hashimoto’s thyroiditis for the first time. It laid a foundation for the disclosure of the pathogenesis of AITDs, and provided a possible treatment prospect for HT.

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