Searchable abstracts of presentations at key conferences in endocrinology

ea0074oc5 | Oral Communications | SFENCC2021

A case of parathyromatosis: All options exhausted

Lawless Thomas , Talbot Fleur , Russell Georgina , Morgan Justin

Case historyA 23-year-old woman with no significant past medical history and normal renal function was incidentally found to be hypercalcaemic in 2003. Following investigation, she was diagnosed with primary hyperparathyroidism. She underwent three-gland parathyroidectomy; histology demonstrated hyperplasia. Her bone function remained normal, but 4 years later she was found to have normocalcaemic hyperparathyroidism. Sestamibi demonstrated uptake inferio...

ea0063p426 | Adrenal and Neuroendocrine Tumours 2 | ECE2019

Validation of 24-hour human adrenal steroid rhythms measured by ULTRADIAN interstitial automated microdialysis: Comparison with plasma

Upton Thomas , Methlie Paal , Russell Georgina , Henne Nina , Tsagarakis Stelios , Kampe Olle , Lightman Stafford , Husebye Eystein

Background: Hormones oscillate in circadian and ultradian rhythms. Consequently, single time point measurements are very difficult to interpret. To address this, we developed an automated system of 24-hour ambulatory microdialysis. This allows measurement of free hormone concentrations in subcutaneous interstitial fluid collected while participants continue normal daily activities. To validate the technique for adrenal steroid hormones, we simultaneously sampled interstitial f...

ea0059oc2.1 | The best of the best | SFEBES2018

24-hour adrenal steroid rhythms are readily detected by ULTRADIAN automated ambulatory microdialysis in man

Upton Thomas , Methlie Paal , Russell Georgina , Tsagarakis Stelios , Kampe Olle , Lightman Stafford , Husebye Eystein

Background: Hormones oscillate in circadian and ultradian rhythms. Single time point samples are difficult to interpret and high frequency measurements are time consuming, expensive and invasive. We developed a minimally invasive technique of ambulatory, automated microdialysis. This allows frequent 24-hour sampling of interstitial fluid while participants continue normal daily activities.Methods: Healthy volunteers (age 18–68, no regular medication...

ea0077p227 | Neuroendocrinology and Pituitary | SFEBES2021

Ectopic Cushing’s syndrome: challenging the stereotype

Wordsworth Georgina , Talbot Fleur , Cheyne Elizabeth , Chau Fong , Lonnen Kathryn , Tatovic Danijela , Russell Georgina , Kahal Hassan , Parfitt Vernon

Ectopic Cushing’s syndrome (CS) is commonly caused by malignancy, often behaves aggressively and may not clinically manifest with features of hypercortisolism due to its rapid course and associated cachexia. This may mislead clinicians into discounting the diagnosis in patients with more indolent features of CS. We present a 41 year old woman with an 8 year history of Cushingoid features with associated hypertension, obesity and Type 2 Diabetes. Investigations confirmed C...

ea0065p7 | Adrenal and Cardiovascular | SFEBES2019

ULTRADIAN adrenal steroid metabolodynamics successfully discriminates pituitary Cushing’s disease from healthy normal variation

Upton Thomas , Zavala Eder , Fraser Diane , Methlie Paal , Russell Georgina , Tsagarakis Stelios , Kampe Olle , Lightman Stafford , Husebye Eystein

Background: Establishing endocrine diagnoses including pituitary Cushing’s remains challenging with delayed or misdiagnosis being very costly for both patient and the health care system. A key issue is that standard diagnostic tests are typically single time point, single analyte samples, which do not consider dynamic variation intrinsic to endocrine systems. Having previously demonstrated that free tissue hormones correlate strongly with plasma concentrations, we present...

ea0077p139 | Adrenal and Cardiovascular | SFEBES2021

The ULTRADIAN consortium - Ambulatory in vivo micro dialysis in primary adrenal insufficiency, preliminary data

Russell Georgina , Upton Thomas , Zavala Eder , Methlie Paal , Simunkova Katerina , Berinder Katerina , Botusan Ileena , Vassiliadi Dimitria , Tsagarakis Stelios , Kampe Olle , Husebye Eystein , Lightman Stafford , Oksnes Marianne , Bensing Sophie

Patients on long term glucocorticoid replacement therapy have higher rates of morbidity and mortality. One causative factor may be non-physiological cortisol replacement. We have developed as part of the ULTRADIAN consortium ( the U-RHYTHM, an ambulatory bio-sampling device that can collect clinical samples using in-vivo microdialysis every 20 minutes over the 24hour day whilst individuals continue with their normal everyday activities....

ea0065oc2.1 | Neuroendocrinology, Pituitary and Neoplasia | SFEBES2019

Differential effects of subcutaneous pulsatile versus oral hydrocortisone replacement therapy on fMRI resting state and task based emotional processing in patients with primary adrenal insufficiency

Russell Georgina , Kalafatakis Konstantinos , Thakrar Jamie , Hudson Elizabeth , Alim Lina , Marchant Nicola , Thirard Russell , Brooks Jonathan , Thai Jade , Harmer Catherine , Lightman Stafford

Background : Patients with primary adrenal insufficiency (PAI) describe significant impairments in quality of life. Current replacement regimes are non-physiological. Animal studies indicate that pulsatile presentation of endogenous glucocorticoids is critical for normal transcriptional and behavioural responses. Healthy volunteer work also shows that pattern of glucocorticoid presentation alters cognitive and emotional processing.Objective: To assess th...

ea0077oc4.4 | Adrenal and Cardiovascular | SFEBES2021

24-hour dynamics of free tissue adrenal hormones: A description of healthy normal variation

Upton Thomas , Zavala Eder , Russell Georgina , Oksnes Marianne , Grytaas Marianne , Simunkova Katerina , Botusan Ileana , Berinder Katarina , Bensing Sophie , Vassiliadi Dimitra , Methlie Paal , Kampe Olle , Tsagarakis Stelios , Husebye Eystein , Lightman Stafford

Adrenal hormones possess both circadian and ultradian rhythms, making interpretation of single time point measurements difficult, particularly in the context of suspected endocrine disease. Attempting to capture either normal or pathological rhythms in detail by traditional measurement of blood is impractical and generally unfeasible. However, minimally invasive microdialysis sampling of free tissue hormones coupled with a portable fraction collector (U-RHYTHM), and a targeted...