Publications by authors named "Ragnhildur Bergthorsdottir"

Introduction: Adrenal insufficiency (AI) is a rare disorder characterised by an impaired secretion of glucocorticoids from the adrenal glands. Treatment strategies for AI have developed over time with reduced glucocorticoid replacement doses and improved circadian exposure regimens, but whether this has resulted in better survival is unknown. The main purpose of this systematic review is to gather and synthesise available evidence on long-term mortality in patients with AI.

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Article Synopsis
  • * While the infection rates of COVID-19 were similar between the two groups, AI patients had significantly higher rates of hospitalization (2.1% vs. 0.8%), intensive care admissions (0.3% vs. 0.1%), and deaths (0.8% vs. 0.2%).
  • * The study concluded that AI patients face over twice the risk of severe COVID-19 outcomes, highlighting the need for prioritized vaccinations and targeted treatments for these individuals.
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Glucocorticoid (GC) treatment suppresses the hypothalamic-pituitary-adrenal axis and can cause GC-induced adrenal insufficiency. In this study, we investigated the incidence of GC-induced adrenal insufficiency in patients receiving intermittent short-term high-dose oral GC treatment for newly diagnosed diffuse large B-cell lymphoma. Cosyntropin stimulation test was used to assess adrenal function at study entry (baseline), at 2 months (before the 5th cycle), and 6 months from baseline (3 months after the last cycle).

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Objective: Glucocorticoids suppress the hypothalamic-pituitary-adrenal axis, which may lead to glucocorticoid-induced adrenal insufficiency. The study aimed to investigate the prevalence of this state in patients with oral lichen planus treated with topical clobetasol propionate.

Methods: In this cross-sectional study, 30 patients with oral lichen planus receiving long-term (>6 weeks) clobetasol propionate gel 0.

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Objective: Autoimmune Addison's disease (AAD) entails a chronic adrenal insufficiency and is associated with an increased risk of severe infections. It is, however, unknown how patients with AAD were affected by the coronavirus disease 2019 (COVID-19) pandemic of 2020-2021. This study was aimed at investigating the incidence of COVID-19 in patients with AAD in Sweden, the self-adjustment of medications during the disease, impact on social aspects, and treatment during hospitalization.

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Background: Glucocorticoids are among the most commonly prescribed drugs, but there is no biomarker that can quantify their action. The aim of the study was to identify and validate circulating biomarkers of glucocorticoid action.

Methods: In a randomized, crossover, single-blind, discovery study, 10 subjects with primary adrenal insufficiency (and no other endocrinopathies) were admitted at the in-patient clinic and studied during physiological glucocorticoid exposure and withdrawal.

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Context: Oral once-daily dual-release hydrocortisone (DR-HC) replacement therapy has demonstrated an improved metabolic profile compared to conventional 3-times-daily (TID-HC) therapy among patients with primary adrenal insufficiency. This effect might be related to a more physiological cortisol profile, but also to a modified pattern of cortisol metabolism.

Objective: This work aimed to study cortisol metabolism during DR-HC and TID-HC.

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Context: Appropriate management of adrenal insufficiency (AI) in pregnancy can be challenging due to the rarity of the disease and lack of evidence-based recommendations to guide glucocorticoid and mineralocorticoid dosage adjustment.

Objective: Multicenter survey on current clinical approaches in managing AI during pregnancy.

Design: Retrospective anonymized data collection from 19 international centers from 2013 to 2019.

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Objective: This study aimed at comparing precursors of endogenous corticosteroid production in patients with primary adrenal insufficiency and in secondary adrenal insufficiency.

Design: Twenty patients with primary adrenal insufficiency and matched controls and 19 patients with secondary adrenal insufficiency participated in this ancillary analysis of two different studies.

Patients And Measurements: Patients with primary adrenal insufficiency were on stable hydrocortisone and fludrocortisone therapy.

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Context: Patients with Addison's disease (AD) have increased cardiovascular mortality.

Objective: To study visceral fat and conventional and exploratory cardiovascular risk factors in patients with AD.

Design: A cross-sectional, single-center, case-control study.

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Patients with Cushing's Syndrome (CS) in remission were used as a model to test the hypothesis that long-standing excessive cortisol exposure induces changes in DNA methylation that are associated with persisting neuropsychological consequences. Genome-wide DNA methylation was assessed in 48 women with CS in long-term remission (cases) and 16 controls matched for age, gender and education. The Fatigue impact scale and the comprehensive psychopathological rating scale were used to evaluate fatigue, depression and anxiety.

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Objective: To investigate the long-term safety and tolerability of a once-daily, dual-release hydrocortisone (DR-HC) tablet as oral glucocorticoid replacement therapy in patients with primary adrenal insufficiency (AI).

Design: Prospective, open-label, multicenter, 5-year extension study of DR-HC conducted at five university clinics in Sweden.

Methods: Seventy-one adult patients diagnosed with primary AI who were receiving stable glucocorticoid replacement therapy were recruited.

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Objective: Our hypothesis was that patients with diabetes mellitus obtain an additional risk of death if they develop Addison's disease (AD).

Design And Methods: Nationwide, matched, observational cohort study cross-referencing the Swedish National Diabetes Register with Inpatient, Cancer and Cause of Death Registers in patients with diabetes (type 1 and 2) and AD and matched controls with diabetes. Clinical characteristics at baseline, overall, and cause-specific mortality were assessed.

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Context: Studies of the clinical and immunological features of autoimmune Addison disease (AAD) are needed to understand the disease burden and increased mortality.

Objective: To provide upgraded data on autoimmune comorbidities, replacement therapy, autoantibody profiles, and cardiovascular risk factors.

Design, Setting, And Participants: A cross-sectional, population-based study that included 660 AAD patients from the Swedish Addison Registry (2008-2014).

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Objective: Adverse body compositional features and low bone mineral density (BMD) are the characteristic of patients with active Cushing's syndrome (CS). The aim of this study was to evaluate body composition and BMD in women with CS in long-term remission and the influence of polymorphisms in genes affecting glucocorticoid (GC) sensitivity on these end-points.

Design, Patients And Methods: This was a cross-sectional, case-controlled study, including 50 women previously treated for CS and 50 age and gender-matched controls.

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Context: Cognitive function is impaired in patients with Cushing's syndrome (CS) in remission.

Objective: The objective of the investigation was to study the effects of polymorphisms in genes associated with glucocorticoid (GC) sensitivity on cognitive function in patients with CS in long-term remission.

Design: This was a cross-sectional, case-controlled, single-center study.

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Background: Patients with Addison's disease (AD) in Scandinavia have an increased risk for premature death due to cardiovascular disease (CVD). Serum lipids are important risk factors for CVD and vascular mortality. Replacement doses of hydrocortisone have historically been higher in Sweden than South Africa.

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Background: Endogenous plasma cortisol levels have a well-defined circadian rhythm. The aim of this project is to develop a once daily oral dual-release formulation for cortisol replacement therapy that mimics the diurnal variation in the plasma cortisol profile.

Objective: To determine single-dose plasma pharmacokinetics and dose-proportionality of oral 5 and 20 mg dual-release hydrocortisone tablets in healthy volunteers.

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Background: Glucocorticoid (GC) deficiency is a consequence of various disorders that are by themselves rare. Because of this low prevalence, the low cost of GC replacement therapy and the belief that existing outcomes are good, there has been little interest in development of new and improved pharmaceutical products for treatment of GC deficiency. However, GC replacement therapy is complex: diurnal variation of endogenous cortisol must be replicated, GC needs may change during times of physical and psychological stress and there is no biomarker of its action that can be used to monitor individual dose response.

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Background: The survival rate of patients with primary adrenal insufficiency (Addison's disease) undergoing currently accepted replacement therapy is not known, although well-informed patients are considered to have a normal survival rate. In this study, we evaluated the mortality of patients with Addison's disease in Sweden.

Methods: A population-based, retrospective, observational study was performed, using the National Swedish Hospital and Cause of Death Registers, covering the period from 1987-2001.

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We report a middle aged smoker with recurrent pneumonia caused by endobronchial actinomycosis secondary to a tooth aspiration. Unlike previously reported cases, our patient was not chronically debilitated. The case suggests that a follow-up bronchoscopy is beneficial after the initiation of antibiotic therapy for endobronchial actinomycosis.

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