Endocrine Abstracts

Introduction: In lambs, the rapid increase in heat production after birth is due to the initiation of nonshivering thermogenesis in brown adipose tissue (BAT). This occurs in conjunction with an increase in amount and activity of the BAT specific uncoupling protein 1 (UCP1). Both mRNA and protein for the long and short forms of the prolactin receptor are highly abundant in ovine BAT up to the time of birth. The following study aimed to determine whether prolactin administratio...

Background: Syndrome of Inappropriate Anti-diuretic Hormone (SIADH) secretion is the most common cause of hyponatremia in cancer patients. About 14% of hyponatremia in medical inpatients is due to underlying tumor-related conditions. We performed an audit to evaluate prevalence of lung malignancy in patients newly diagnosed with SIADH and to assess proportion of patients having radiological evidence of lung cancer through chest x ray and/or CT chest imaging six months after es...

Background: Relapse rates in young people with Graves’ disease (GD) are around 75% after 2 years of antithyroid drugs (ATD). However, there is little mechanistic insight into the pathophysiology of relapse and a lack of robust predictive biomarkers. B cell subsets and related cytokines may reflect humoral immune activity, for which T cells have an important supporting role.Aims: The purpose of this study was to evaluate T and B cell subpopulations, ...

Background and Aims: Relapse in Graves’ disease (GD) often occurs after antithyroid drugs (ATD) are withdrawn, however there is a lack of robust predictive biomarkers for relapse and little mechanistic insight into its pathophysiology. B-cell related cytokines and chemokines may reflect humoral immune activity and therefore be predictive of outcome. The purpose of this study was to evaluate serum B-cell activating factor (BAFF), Chemokine ligand 13 (CXCL13), A-proliferati...

Background: HLA-DRB1*04 is one of the MHC alleles which is associated with several autoimmune endocrinopathies, including autoimmune Addison’s disease (AAD). The two versions of the gene which encodes the main target of the autoimmune attack in AAD, steroid 21-hydroxylase, are encoded in a gene cluster, called RCCX module, which is a copy number variation located in the MHC class III locus. Previous data from our group showed that AAD patients are more likely to have no c...

Background: Diagnostic work-up for Cushing Syndrome (CS) can be challenging and is based on clinical and biochemical assessments. Biochemical evidence of endogenous steroid excess is demonstrated through overnight dexamethasone suppression test (ODST), low dose dexamethasone suppression test and/or 24-hour urinary free cortisol estimation (UFC). Once endogenous steroid excess is confirmed, random serum ACTH measurement is key in determining the suspected source of steroid exce...

Objective: The SH2B3 gene encodes the src homology-2B adaptor protein 3, also known as lymphocyte adaptor protein (LNK), and is a negative regulator of T lymphocyte activation and the cytokine signalling pathways involved in inflammation and haematopoiesis. rs3184504, a non-synonymous SNP (R262W) in exon 3 of the SH2B3 gene, has been associated with numerous autoimmune conditions including type 1 diabetes, rheumatoid arthritis and coeliac disease. Th...

Background: Congenital adrenal hyperplasia (CAH) is the commonest genetic endocrine disorder, affecting 1 in 18 000 UK births. The 2010 CaHASE Study identified a myriad of health problems associated with CAH and its treatment, and a lack of consensus on treatment strategies in adults. Endocrine Society guidelines (2010, revised 2018) have since been published to support management. As one of the original CaHASE centres, we have audited our recent practice against these new sta...

Ipilimumab and tremelimumab are monoclonal antibodies directed against the extracellular domain of cytotoxic T-lymphocyte-associated antigen 4 (CTLA4) and have been used as the immunotherapies against immune checkpoints that suppress T cell activation. These anti-CTLA4 antibody-based therapies are effective in treating various cancers including metastatic melanoma. However, a few immune-related adverse events including hypophysitis and transient thyroiditis have been reported....

Context: Perturbations in thyroid function are common in older people, and subclinical hyperthyroidism has been associated with increased risk of dementia in people aged 55 years and above. The significance of subtle perturbations of thyroid function in the very old remains poorly understood.Objective: This study sought to determine if subtle abnormalities of thyrotropin and variations of free thyroid hormones within the reference range correlate with co...