Searchable abstracts of presentations at key conferences in endocrinology

ea0081p644 | Endocrine-Related Cancer | ECE2022

Sublethal hyperthermia decreases cellular proliferation and transiently disrupts steroidogenesis in adrenal cells

Mullen Nathan , Donlon Padraig , Duffy Katen , Feely Sarah , Warde Kate M , Sorushanova Anna , Prakash Punit , O'Halloran Martin , Dennedy Michael Conall

Introduction: Primary Aldosteronism is the most common cause of secondary hypertension. First-line treatment; adrenalectomy resects adrenal nodules and adjacent normal tissue, limiting suitability to those who present with unilateral disease. Use of thermal ablation represents an emerging approach as a possible minimally invasive therapy for unilateral and bilateral disease, to target and disrupt hypersecreting aldosterone producing adenomas, while preserving adjacent normal a...

ea0081ep74 | Adrenal and Cardiovascular Endocrinology | ECE2022

Magnetic iron oxide nanoparticles for the delivery of thermal therapy for the treatment of primary aldosteronism

Sorushanova Anna , Donlon Padraig , Covarrubias-Zambrano Obdulia , Covarrubias Jose , Varghese Sunitha , Owens Peter , O'Halloran Martin , Prakash Punit , Bossmann Stefan , Dennedy Michael Conall

To minimise damage to surrounding tissues, targeted delivery of therapeutics to the tumour is highly desirable, and the development of nanotechnology has shown promising results. Magnetic iron oxide nanoparticles (MIONPs) have been gaining traction over the years for applications such as drug delivery, molecular imaging and delivering hyperthermia for treatment of various cancers (1). MIONPs have great therapeutic potential as they can be produced in various sizes and shapes, ...

ea0090p282 | Adrenal and Cardiovascular Endocrinology | ECE2023

Characterisation of a Three-Dimensional (3D) Cell Culture Model of Adrenocortical Carcinoma

Feely Sarah , Donlon Padraig , Mullen Nathan , Sorushanova Anna , P Finn David , Hernan Brendan , Carroll Oliver , Owens Peter , Pandit Abhay , Hantel Constanze , C Dennedy Michael

Adrenocortical carcinoma (ACC) is a rare malignancy associated with a poor prognosis (1). Current treatments are limited with surgical resection the only option for a complete cure (2). The development of translational therapies is limited by pre-clinical disease models. Three-dimensional (3D) cell culture models can accurately reflect the tumour micro-environment but are lacking in ACC (3). In the current study, we developed and characterised novel 3D models of MUC-1, HAC15 a...

ea0090p552 | Adrenal and Cardiovascular Endocrinology | ECE2023

Non-specific uptake of magnetic iron oxide nanoparticles by Adrenocortical carcinoma and Endothelial cells

Sorushanova Anna , Donlon Padraig , Mullen Nathan , Covarrubias-Zambrano Obdulia , Covarrubias Jose , Varghese Sunitha , Hantel Constanza , Owens Peter , O'Halloran Martin , Prakash Punit , Bossman Stefan , Conall Dennedy Michael

Adrenocortical carcinoma is a rare malignant tumour that starts in the adrenal gland, accounting for 4% of all adrenal tumours. Functioning ACC can cause symptoms related to the overproduction of hormones and large tumours can press on nearby organs. Primary treatment for ACC tumour is surgery to remove the tumour, and may also include Chemotherapy or Radiation to stop the cancer cells from spreading. Therefore, more affective therapies for delivering therapeutics to the tumou...

ea0073aep77 | Adrenal and Cardiovascular Endocrinology | ECE2021

Hyperthermia differentially affects cortisol and aldosterone secretion under stimulated conditions

Donlon Padraig , Mullen Nathan , Warde Kate , Bottiglieri Anna , Cappiello Grazia , Farina Laura , Basel Matthew , Martin O’Halloran , Prakash Punit , Paula O’Shea , Dennedy Michael Conall

IntroductionPrimary Aldosteronism (PA) is the commonest secondary cause of hypertension. Mainstay therapy, adrenalectomy resects both hypersecreting and adjacent normal tissue. It is therefore only suitable for patients with unilateral disease (40% cases), whom are surgical candidates. Thermal therapy presents a plausible minimally invasive therapy, to target and disrupt hypersecreting aldosterone producing adenomas (APA), while also preserving adjacent ...

ea0063p441 | Adrenal and Neuroendocrine Tumours 2 | ECE2019

Microwave ablation of the adrenal gland for treatment of functioning adrenocortical tumours: porcine in vivo study

Donlon Padraig , Fallahi Hojjatollah , Beard Warren Beard , Shazad Atif , Heflin Lindsay , Cox Whitney , Bloomberg Brooke , Lillich James , Ganta Chanran , O'Sullivan Gerard , Ruvio Giuseppi , O'Shea Paula , O'Halloran Martin , Prakash Punit , Dennedy Michael

Objective: To evaluate MTA as a precision ablation methodology for adrenocortical tissue, simultaneously evaluating effects on adjacent non-targeted tissue.Methodology: A directional MTA applicator was used in vivo on adrenals of 8 male pigs: (i) sham (n=2); (ii) 45 watts for 60 seconds (n=3); (iii) 70 watts for 60 seconds (n=3). Blood was drawn intraprocedurally and at 48h for measurement of metanephrines, cortisol, A...