Browsing by Subject "Thyroid"

Now showing 1 - 7 of 7
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    COVID-19-Induced Graves' Disease
    (Springer Nature, 2022-02-15) Ghareebian, Hagop; Mariash, Cary; Medicine, School of Medicine
    COVID-19, a multi-system disease, could potentially play a role in thyroid dysfunction. New reports show a prevalence of COVID-related thyroiditis. Recent studies suggest that there may be a higher risk of thyroiditis in the setting of SARS-CoV-2, and several cases of Graves’ disease have been reported in individuals with SARS-CoV-2, although the incidence of such findings and their relationship to COVID-19 is unknown. In this report, we present Graves’ hyperthyroidism in a 48-year-old African American male who was admitted to the hospital for complaints of cough, fatigue, and palpitations. He tested positive for SARS-CoV-2 and was found to have suppressed thyroid-stimulating hormone (TSH) and an elevated free T4. The patient had no prior history of thyroid disease. Initially, it was thought to be a case of viral thyroiditis, and he was discharged on prednisone. However, he was found to have positive thyroid-stimulating immunoglobulin (TSI) and a diffuse increase in flow on doppler ultrasound of the thyroid. Subsequently, he was started on anti-thyroid medications with significant improvement. What is unique about this case is that, unlike other described cases in the literature where there was a relapse of a known Graves' disease after COVID-19 disease, our patient did not have a history or symptoms of thyroid disease prior to this event, which should raise the concern about possible activation of Graves' disease after SARS-CoV-2 infection through an autoimmune pathway. In our opinion, physicians, particularly endocrinologists, must be aware of this condition and keep it in mind as a potential differential diagnosis when encountering a similar clinical scenario.
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    Dietary Patterns and Hypothyroidism in U.S. Adult Population
    (MDPI, 2024-01-28) Alkhatib, Dana; Shi, Zumin; Ganji, Vijay; Nutrition and Dietetics, School of Health and Human Sciences
    The thyroid gland produces hormones that are essential for various body functions. Hypothyroidism is defined as insufficient thyroid hormone production. Several studies have found associations between specific micronutrients and overall thyroid function; however, the amount of evidence regarding the relationship between dietary patterns and hypothyroidism among the U.S. population is limited. Data from three cycles of National Health and Nutrition Examination Surveys (NHANES), 2007–2008, 2009–2010, and 2011–2012, were used (n = 8317). Subjects with serum thyroid stimulating hormone >4.5 mIU/L or on levothyroxine were considered to have hypothyroidism. Age, sex, race/ethnicity, body mass index, and several lifestyle factors were considered as covariates. Three patterns were extracted using factor analysis. These were labeled as fat–processed grains–sugars–meats (FPSM), oils–nuts–potatoes–low-fat meats (ONPL), and fruits–whole grains–vegetables–dairy (FWVD) patterns. In a weighted multiple logistic regression, FPSM and ONPL were inversely associated with hypothyroidism (OR, 0.75; 95% CI, 0.57–1; p = 0.049 and OR, 0.81; 95% CI, 0.67–0.97; p = 0.025, respectively). However, FWVD demonstrated no association with hypothyroidism (p = 0.63). In conclusion, FPSM and ONPL patterns but not FWVD patterns were associated with hypothyroidism in U.S. adults. Nutrient deficiencies and their interactions may be linked to hypothyroidism.
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    Lactation Duration and Long-Term Thyroid Function: A Study among Women with Gestational Diabetes
    (MDPI, 2018-07-21) Panuganti, Pranati L.; Hinkle, Stefanie N.; Rawal, Shristi; Grunnet, Louise G.; Lin, Yuan; Liu, Aiyi; Thuesen, Anne C.B.; Ley, Sylvia H.; Olesen, Sjurdur F.; Zhang, Cuilin; Epidemiology, School of Public Health
    Lactation is associated with reduced postpartum weight retention and a lower risk of several cardiometabolic disorders in population-based studies. We examined the association between lactation and long-term thyroid function among women with history of gestational diabetes mellitus (GDM), a high-risk population for subsequent metabolic complications. The study included 550 women who developed GDM in the Danish National Birth Cohort (1996⁻2002) and followed-up in the Diabetes & Women's Health Study (2012⁻2014). We assessed adjusted associations between cumulative lactation duration and concentrations of thyroid stimulating hormone (TSH), free triiodothyronine (fT3), and free thyroxine (fT4) measured at follow-up. Women with longer cumulative lactation duration tended to have higher fT3 levels (adjusted β and 95% confidence interval (CI) for ≥12 months vs. none: 0.19 (0.03⁻0.36); p-trend = 0.05). When restricted to women with a single lifetime pregnancy to control for parity (n = 70), women who lactated for >6 months (vs. none) had higher fT3 levels (0.46 pmol/L (0.12⁻0.80); p-trend = 0.02) and a higher fT3:fT4 ratio (0.61 (0.17⁻1.05); p-trend = 0.007). Our findings suggested that a longer duration of lactation may be related to greater serum fT3 levels and fT3:fT4 ratio 9⁻16 years postpartum among Danish women with a history of GDM. The association was particularly pronounced among women who only had one lifetime pregnancy.
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    Malignant effusions secondary to metastatic thyroid carcinomas: A review of 15 cases
    (Wiley, 2023) Mustafa, Mohamed Amin; Malenie, Renuka; Mir, Fatima; Hamadeh, Fatima; Policarpio‐Nicolas, Maria Luisa; Pathology and Laboratory Medicine, School of Medicine
    Background: Malignant effusions secondary to thyroid carcinomas are rare, and publications on this topic are limited. This study presents a large cohort of thyroid carcinomas involving effusion cytology. Methods: A 20-year computerized search for fluid cytology diagnosed with thyroid malignancy was performed. The following data were collected: patients' demographics, clinical findings, and histologic diagnoses. The cytology slides and ancillary tests were reviewed. Results: Among 47,593 specimens, 15 thyroid carcinomas involving the pleural fluid from 11 patients were found. There were six males and five females with a mean age of 72 years. Ten patients with available follow-up died of their disease. Papillary thyroid carcinoma (PTC) was the only histologic type. Ten cytology cases were available for review. The cytologic findings common to all cases were nonspecific (clusters/three-dimensional architecture, enlarged irregular nuclei, and scant to abundant to vacuolated cytoplasm). The classic PTC features were not present in all cases (fine/powdery chromatin [80%], micronucleoli [70%], nuclear grooves [50%], papillary-like architecture [40%], psammoma bodies [40%], and pseudo-nuclear inclusions [20%; present on the cell block only]). In 11 of the 15 cases, the diagnosis was rendered with immunohistochemical stains performed on the cell block (paired box 8, thyroid transcription factor 1, and thyroglobulin). In four of the 15 cases, the cytologic diagnosis was made after a comparison with prior surgical pathology or fluid cytology. Conclusions: PTC is the most common histologic type of thyroid malignancy involving pleural effusion. Because the cytologic findings are nonspecific and classic PTC features are not always present, the clinical history in conjunction with immunohistochemical stains is helpful in arriving at the correct diagnosis.
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    Steroids Precipitating Acute Thyrotoxic Paralysis
    (2022-03-25) Garcia, Jennifer; Pelton, Sarah; Vander Missen, Marissa; Vultorius, Daniela; Patel, Neha; Saeed, Zeb
    Case Description: A 34-year-old Black male was admitted with a new diagnosis of Graves’ disease and impending thyroid storm with a Burch-Wartofsky Score of 25. Initial labs showed undetectable TSH, total T3 of >800, free T4 of 7.21, and TrAb of 21.53. He was started on methimazole, propranolol, and hydrocortisone 100mg q8h. On day 2 of hospitalization, he presented with acute bilateral lower extremity paralysis shortly after eating lunch. His blood glucose was 231, and a stat BMP showed a potassium of 2.0. He was found to have thyrotoxic periodic paralysis (TPP). Steroids were stopped immediately, and he was given additional propranolol and potassium repletion. He received a total of 60mEq KCl and did not have recurrence after steroids were stopped. Conclusion: Steroids are very commonly used in treatment of thyroid storm but can potentially exacerbate endocrine emergencies, such as thyrotoxic periodic paralysis. Additionally, demographic factors may have also decreased the likelihood of considering the potential for TPP as the patient’s race did not correspond to the most common demographics, Asian populations. Thus, it is important to be aware of the potential effects of steroids. Clinical Significance: TPP is a rare complication of thyrotoxicosis. Excess thyroid hormones in the blood increase activity of the Na+/K+-ATPase pump, leading to intracellular shifts of potassium and consequential hypokalemia. Glucocorticoids have been shown to increase the relative amounts of Na+/K+-ATPase pumps and exacerbate hypokalemia. Steroids are one of four common treatments for thyroid storm, so their effects on transcellular ion balance must be monitored. Insulin was also found to increase Na+/K+-ATPase pump activity, explaining why episodes of TPP often correlate with carbohydrate-rich meals. Treatment of TPP, which can be done with repletion of KCl and beta blockers, must monitor for and avoid inducing a hyperkalemic state.
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    The Thyroid Hormone Axis and Female Reproduction
    (MDPI, 2023-06-06) Brown, Ethan D. L.; Obeng-Gyasi, Barnabas; Hall, Janet E.; Shekhar, Skand; Medicine, School of Medicine
    Thyroid function affects multiple sites of the female hypothalamic-pituitary gonadal (HPG) axis. Disruption of thyroid function has been linked to reproductive dysfunction in women and is associated with menstrual irregularity, infertility, poor pregnancy outcomes, and gynecological conditions such as premature ovarian insufficiency and polycystic ovarian syndrome. Thus, the complex molecular interplay between hormones involved in thyroid and reproductive functions is further compounded by the association of certain common autoimmune states with disorders of the thyroid and the HPG axes. Furthermore, in prepartum and intrapartum states, even relatively minor disruptions have been shown to adversely impact maternal and fetal outcomes, with some differences of opinion in the management of these conditions. In this review, we provide readers with a foundational understanding of the physiology and pathophysiology of thyroid hormone interactions with the female HPG axis. We also share clinical insights into the management of thyroid dysfunction in reproductive-aged women.