Searchable abstracts of presentations at key conferences in endocrinology

ea0063p566 | Diabetes, Obesity and Metabolism 2 | ECE2019

Evaluation of the improvement in vascular endothelial function from raphanus sativus via activation of PI3K/Akt pathway

Hwang Kyung-A , Hwang Hye-Jeong , Lee Sung-Hyeon , Jang Hwan-Hee

This study investigated the role of muscarinic receptors and endothelial signaling pathways in the vascular relaxation promoted by Raphanus sativu. In our research for active constituents in Raphanus sativus with the potential for improving the vascular system, we evaluated the effect of Raphanus sativus on NO production in vascular endothelial cells. In the result, we found that the underlying mechanism for stimulating NO production by Raphanus ...

ea0063p589 | Diabetes, Obesity and Metabolism 2 | ECE2019

Discrete choice and SF-36 estimates of patient quality of life and benefits of leptin replacement therapy (LRT) in generalized and partial lipodystrophy (GL, PL)

Ali Omer , Cook Keziah , Lee Don , Shampanier Kristina , Tuttle Edward , Bradt Pamela

We report new estimates of the disutility associated with GL and PL, and the quality of life (QoL) impact of leptin replacement therapy (LRT) based on two methods. The first approach estimates utility decrements associated with a range of impairments related to lipodystrophy through a discrete choice experiment (DCE) conducted with members of the general public; the second elicits QoL estimates from 8 PL patients using the SF-36 instrument. To characterize QoL consequences of ...

ea0063p994 | Environment, Society and Governance | ECE2019

Effect of octyl-phenol and bisphenol A on calcium signaling in cardiomyocyte differentiation of mouse embryonic stem cells

Lee Jae-Hwan , Go Seon Myeong , Yoo Yeong-Min , Jeung Eui-Bae

Endocrine-disrupting chemicals (EDCs) have similar structures with steroids hormones, which can interfere with hormone synthesis and normal physiological functions of male and female reproductive organs. Sex steroid hormones influence calcium signaling of the cardiac muscle in early embryo development. Progesterone (P4) has been reported to reduce blood pressure. To confirm the effect of P4, octyl-phenol (OP) and bisphenol A (BPA) on early differentiation of mouse embryonic st...

ea0063p995 | Environment, Society and Governance | ECE2019

Second-phase validation of developmental toxicity test using embryoid body’s area

Lee Jae-Hwan , Park Seon Mi , Jung Eui-Man , Jeung Eui-Bae

The embryoid body test (EBT) is a developmental toxicity test method that assesses the half inhibitory concentrations of substances in the area of embryoid bodies (EBs), and in the viability of mouse embryonic stem cells (ESCs) and fibroblasts (3T3 cells). In the previous pre-validation study evaluated the predictive accuracy of the EBT using 26 coded test substances and highly accurate (above 80%) when substances were classified using the predictive model. EBT used two same e...

ea0049oc3.2 | Receptors & Signalling | ECE2017

Elucidating the role of Liver X receptors (LXRs) in the testis using lipid systems biology

Jarvis Sheba , Gethings Lee , Gadaleta Raffaella , Winston Lord Robert , Williamson Catherine , Bevan Charlotte

Introduction: The importance of the liver-X receptors (LXRs) in the maintenance of cholesterol homeostasis within the testis has yet to be fully characterised. By 7 months of age, Lxrα/β double knockout male mouse (Lxrα/β DKO) develops sterility with aberrations in testosterone production and lipid homeostasis. However, the underlying testicular LXR-regulated pathways are not well understood.Aim: The aim of this study was to further u...

ea0049oc6.4 | Diabetes therapy and complications | ECE2017

Copeptin and its association to cardiovascular dysfunction in type 2 diabetes

Chisalita Simona Ioana , Chong Lee Ti , Nystrom Fredrik , Ostgren Carl Johan , Lanne Toste

Background: We aim to test whether plasma copeptin (copeptin), the C-terminal fragment of vasopressin, has predictive value of cardiovascular events in patients with type 2 diabetes without previous cardiovascular disease who were treated in primary care.Methods: We measured copeptin in 697 patients who participated in the epidemiological study CARDIPP (Cardiovascular Risk Factors in Patients with Diabetes – a Prospective Study in Primary Care; Clin...

ea0049gp4 | Adrenal 1 | ECE2017

Androgen receptor signalling is essential for regression of the adrenal x-zone and regulation of the adrenal cortex in the male mouse

Gannon Anne-Louise , O'Hara Laura , Mitchell Rod , Mason Ian , Smith Lee

Introduction: Androgens have long been known to play an important role in health and wellbeing. A range of clinical disorders in males and females can arise due to disruption to production and action of androgens. Androgen receptor (AR) is widely expressed throughout the adrenal cortex, yet the wider role for androgen signalling in the adrenal remains underexplored due to the lack of suitable animal models.Methods: An adrenal-specific androgen receptor k...

ea0049gp129 | Endocrine Tumours | ECE2017

Androgen receptor activation inhibits endothelial cell proliferation through an extra-nuclear signaling pathway

Huo Yen-Nien , Yeh Shauh-Der , Chou Chih-Ming , Lee Wen-Sen

The effect of androgen on angiogenesis has been documented. However, its molecular mechanisms underlying has not been well illustrated. Here, we show that treatment with an androgen receptor (AR) agonist, metribolone (R1881) at a range of concentrations (0.05–5 nM) or dihydrotestosterone (DHT) at a range of concentrations (0.4–40 nM) caused concentration-dependent inhibition of proliferation in human umbilical venous endothelial cells (HUVEC). The R1881-induced proli...

ea0049ep248 | Calcium & Vitamin D metabolism | ECE2017

Glucocorticoids regulate expression of lung calbindin-D9k in mouse

An Jin Yong , Lee Jae-Hwan , Park Seon Yong , Jeung Eui-Bae

Introduction: Calbindin-D9k (CaBP-9k), which is a calcium ion buffering and transporter gene, is known to be regulated by the vitamin D and steroid hormones, and is mainly expressed in mammalian intestine, kidney and uterus. However, CaBP-9k expression in lung has not been studied. Maintaining lung structure using pulmonary surfactant is important for pulmonary gas exchange. Steroids are known to accelerate maturation of the fetal lung and secretion of surfactant. Otherwise th...

ea0049ep590 | Diabetes therapy | ECE2017

Efficacy of body weight reduction on SGLT-2 inhibitor in people with type 2 diabetes mellitus

Kim Chong Hwa , Cho Hyun A , Jung Su Jin , Lee Ki Young , Kim Sung Rae

Objective: Dapagliflozin, sodium-glucose cotransporter-2 (SGLT-2) inhibitor, reduces hyperglycemia and body weight by inhibiting renal glucose reabsorption. However, only a few studies have shown the efficacy of dapagliflozin in type 2 diabetic patients. We evaluated the efficacy and safety of body weight reduction of dapagliflozin in real practice with type 2 diabetes in Korea.Methods: This is a retrospective, observational study, data from 61 patients ...