Publications by authors named "Timothy D Cheetham"

Objectives: Patients with congenital adrenal hyperplasia (CAH) have increased prevalence of metabolic problems. We studied adiponectin, leptin and resistin in children with CAH, in relation to BMI, treatment, hormonal and metabolic biomarkers.

Design And Methods: We analysed 101 patients with 21-hydroxylase deficiency (54 females, 13.

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Introduction/aims: Recent clinical guidelines recommend that adolescents with Duchenne muscular dystrophy (DMD) who are on daily glucocorticoid treatment should be offered pubertal induction in order to ensure adult levels of sex hormones as they reach adulthood. However, it remains unclear how gonadal status, including androgen concentrations, impacts physical function and future fertility. The aim of this study was to give a voice to adults with DMD, exploring their perspectives around sexual health, hormone treatment, and fertility.

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Unlabelled: Glucocorticoids (GC) reduce inflammation and preserve muscle function in boys with Duchenne muscular dystrophy (DMD) but cause pubertal delay. Pubertal induction with testosterone is recommended but longer-term outcome is unknown.

Objective: To assess hypothalamic-pituitary-gonadal axis, muscle volume and function 5 years after pubertal induction.

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Objective: The specific mechanisms driving autoimmunity in Graves' disease (GD) remain largely unknown. Kappa-deleting recombination excision circles (KRECs) are circular DNA molecules generated during B cell maturation in the bone marrow which provide a measure of B cell production and proliferation. We aimed to investigate the association between KRECs and B cell subpopulations, with thyroid status and clinical outcome in GD patients.

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Context: Quality of life (QoL) has been inconsistently reported in children and young people (CYP) with congenital adrenal hyperplasia (CAH).

Objective: Assess QoL in CYP with CAH in the UK alongside biometric and androgen profiles.

Design: To define the evidence base for health care delivery, we conducted a cross-sectional study in CYP with CAH in the UK.

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Objective: There is limited knowledge on the onset of comorbidities in congenital adrenal hyperplasia (CAH) during childhood. We aimed to establish the health status of children with CAH in the UK.

Design And Methods: This cross-sectional multicentre study involved 14 tertiary endocrine UK units, recruiting 101 patients aged 8-18 years with classic 21-hydroxylase deficiency and 83 controls.

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Hyperthyroidism caused by Graves' disease (GD) is a relatively rare disease in children. Treatment options are the same as in adults - antithyroid drugs (ATD), radioactive iodine (RAI) or thyroid surgery, but the risks and benefits of each modality are different. The European Thyroid Association guideline provides new recommendations for the management of pediatric GD with and without orbitopathy.

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Objective: Patients with thyrotoxicosis are treated with anti-thyroid drug (ATD) using block and replace (BR) or a smaller, titrated dose of ATD (dose titration, DT).

Design: A multi-centre, phase III, open-label trial of newly diagnosed paediatric thyrotoxicosis patients randomised to BR/DT. We compared the biochemical response to BR/DT in the first 6 months of therapy.

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Context: 17α-Hydroxylase/17,20-lyase deficiency (17OHD) caused by mutations in the CYP17A1 gene is a rare form of congenital adrenal hyperplasia typically characterised by cortisol deficiency, mineralocorticoid excess and sex steroid deficiency.

Objective: To examine the phenotypic spectrum of 17OHD by clinical and biochemical assessment and corresponding in silico and in vitro functional analysis.

Design: Case series.

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Background: Pharmacological doses of glucocorticoids (GC) reduce inflammation and preserve muscle function in boys with Duchenne muscular dystrophy (DMD). Delayed puberty and bone fragility are consequences of GC treatment. The aim of this study was to determine the acceptability of a 2-year pubertal induction regimen using 4-weekly testosterone injections and examine changes in physique, bone integrity, muscle pathology (assessed by MRI) and muscle function.

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Objective: First-line treatment of thyrotoxicosis in young people is thionamide anti-thyroid drug (ATD) in a blocking dose with levothyroxine replacement (block and replace, BR) or in a smaller dose tailored to render the patient euthyroid (dose titration, DT). Our objective was to determine which regimen provides more stable biochemical control.

Design: A multi-centre phase III, open-label randomised trial comparing BR with DT in patients aged 2-17 years with newly diagnosed thyrotoxicosis at 15 UK centres.

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Primary adrenal insufficiency (PAI) is a potentially life-threatening condition that can present with nonspecific features and can be difficult to diagnose. We undertook next generation sequencing in a cohort of children and young adults with PAI of unknown etiology from around the world and identified a heterozygous missense variant (rs6161, c.940G>A, p.

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Background: Accelerated infant weight gain in individuals born full term is linked to cardiovascular risk in adulthood, but data in those born preterm are inconsistent.

Objective: To investigate the association between weight gain in infancy and childhood with later markers of the metabolic syndrome in adolescents who were born preterm.

Study Design: Longitudinal cohort study.

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Loss-of-function mutations of the Autoimmune Regulator (AIRE) gene results in organ-specific autoimmunity and disease Autoimmune Polyendocrinopathy type 1 (APS1)/Autoimmune Polyendocrinopathy Candidiasis Ectodermal Dystrophy (APECED). The AIRE protein is crucial in the induction of central tolerance, promoting ectopic expression of tissue-specific antigens in medullary thymic epithelial cells and enabling removal of self-reactive T-cells. AIRE expression has recently been detected in myeloid dendritic cells (DC), suggesting AIRE may have a significant role in peripheral tolerance.

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Background: Debate exists regarding the optimal treatment strategy for paediatric Graves' disease with radioiodine (RAI), and surgery, usually reserved for failure of medical therapy. We present our own experience to introduce a review of the published literature focussing on the predictors of remission after antithyroid drug (ATD) therapy from diagnosis, and discuss whether RAI should be considered as a first-line therapy.

Method: A retrospective analysis of all diagnosed cases of paediatric Graves' disease presenting to a large District General Hospital.

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Background: Preterm infants represent up to 10% of births worldwide and have an increased risk of adverse metabolic outcomes in later life. Early life exposures are key factors in determining later health but current lifestyle factors such as diet and physical activity are also extremely important and provide an opportunity for targeted intervention.

Methods/design: This current study, GROWMORE, is the fourth phase of the Newcastle Preterm Birth Growth Study (PTBGS), which was formed from two randomised controlled trials of nutrition in early life in preterm (24-34 weeks gestation) and low birthweight infants.

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Article Synopsis
  • The study explores the potential infectious origin of type 1 diabetes by analyzing temporal clustering of cases in children in northeast England from 1990 to 2007.
  • It found strong statistical evidence of clustering in diabetes diagnoses, indicating that cases often occurred in close timeframes, though no consistent seasonal pattern emerged.
  • The results support the idea that infections could play a role in triggering type 1 diabetes, potentially occurring in "mini-epidemics."
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Hypogonadotropic hypogonadism (HH) secondary to hypothalamic gonadotropin-releasing hormone deficiency is a notable feature of a number of rare syndromes, where unlike idiopathic (isolated) HH, other endocrinopathies may also be apparent. The presence of a particular spectrum of clinical features in addition to HH may suggest a particular underlying diagnosis. Placing the diagnosis of HH into that context will then have important implications in terms of management and predicting long-term functional outcome.

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Context: It is estimated that 3-30% of cases with isolated GH deficiency (IGHD) have a genetic etiology, with a number of mutations being reported in GH1 and GHRHR. The aim of our study was to genetically characterize a cohort of patients with congenital IGHD and analyze their characteristics.

Patients And Methods: A total of 224 patients (190 pedigrees) with IGHD and a eutopic posterior pituitary were screened for mutations in GH1 and GHRHR.

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Article Synopsis
  • A recent analysis linked a specific amino acid change in the IFIH1 gene to type 1 diabetes, and previous studies associated a different gene variant (PDCD1) with other autoimmune diseases.
  • The objective of this study was to see if these genetic links also exist in patients with Graves' disease and autoimmune Addison's disease.
  • Results showed a strong association of the IFIH1 variant with Graves' disease but not with Addison's disease or the PDCD1 variant, highlighting the role of the IFIH1 polymorphism in organ-specific autoimmune disorders.
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