Endocrine Abstracts

Background: Klinefelter syndrome (KS), karyotype 47XXY, affects 1 in 650 males. Subjects develop primary gonadal failure requiring life-long testosterone replacement. Many different testosterone formulations are available and long-term monitoring is necessary to avoid secondary polycythaemia.Objective: To investigate the effect of testosterone formulations used in KS subjects and estimate frequency of association with secondary polycythaemia.<p class...

Aims: Meteorin-like (Metrnl) was recently identified as a novel adipomyokine induced by exercise and cold exposure. Metrnl improves glucose tolerance, increases systemic energy expenditure, induces white adipose browning, and promotes anti-inflammatory gene programs in obese/diabetic mice. However, the relationship of Metrnl with diabetes and cardiometabolic risk variables in humans has not been explored.Methods: In 800 subjects (400 patients with type 2...

Background: Distant metastasis rarely occurs in differentiated thyroid carcinoma (DTC), but represents most common cause of death in patients with DTC. Lung and bone are the most frequent sites of distant metastases. This study investigated long term outcomes of lung metastasis in DTC patients and its prognostic factors influencing disease progression and cancer specific survival (CSS).Methods: A total of 134 DTC patients presenting with lung metastasis ...

A 30-year-old man of Asian descent presented to the emergency department with recurrent episodes of sudden onset limb weakness and difficulty walking over a period of 3 years. Each episode resolved within 2–3 h and he had fully normal mobility in between episodes. He denied any visual, bulbar symptoms or other focal neurology. He had a 9 year history of Graves’ disease for which he had recently discontinued carbimazole therapy in preparation fo...

Introduction: Proinsulin is a propeptide of insulin and C-peptide during physiological insulin production and is increased in patients with type 2 diabetes. Increased proinsulin in peripheral blood indicates impairment of cleavage capacity to process insulin within the beta cell. Recently, chemiluminescence assays have been developed that are able to specifically measure uncleaved intact proinsulin in peripheral blood. In this cross-sectional study, we investigated the relatio...

Background: Early detection of residual or recurrent cancer in patients with differentiated thyroid cancer (DTC) is important, especially, when they do not uptake 131I uptake because these tumors do not likely benefit from radioiodine therapy (RAIT). We aimed to evaluate the usefulness of FDG-PET/CT as an early diagnostic work up in DTC patients with negative radioiodine whole body scan (I-WBS) and elevated stimulated Tg (sTg) levels.Methods: ...

A 31-year-old female was referred to Endocrinology clinic for review of her hypergonadotrophic-hypogonadism. She had cleft palate operation at age 3. At age 15y lack of pubertal signs prompted investigations showing XX genotype, FSH:120 IU/L, LH:32 IU/L and low E2. She was started on cyclo-progynova (elsewhere). She has tall stature, span 2.5 cm longer than height, bifid uvula, arachnodactyly with positive ‘wrist sign’, mild scoliosis, pectus excavatum and reduced mu...

Background: Urinary metanephrine (MN) and normetanephrine (NMN) are used to detect recurrence of pheochromocytoma during post-operative period. Currently, reference ranges of urinary MN and NMN obtained from healthy individuals are applied to subjects with adrenalectomy. However, studies regarding the property of using reference ranges from healthy subjects in pheochromocytoma subjects with adrenalectomy are limited.Aim: To compare urinary MN and NMN con...

Carotid intima–media thickness (IMT) has been shown an independent predictive marker of coronary artery disease (CAD) and cardiovascular disease in many studies. We investigated the usefulness of carotid IMT as a screening test for CAD in Korean diabetic patients. We conducted retrospective study and found the type 2 diabetic patients without cardiovascular disease history who underwent carotid ultrasonography (US) and stress echocardiography (SE) from June 2006 to Decemb...

Background/aims: Maternal subclinical hypothyroidism has been reported to be associated with risks of adverse pregnancy outcomes such as fetal loss and possible fetal neurodevelopmental deficit. However, current guidelines seem to overestimate subclinical hypothyroidism in pregnant women in some regions. Therefore, we aim to evaluate trimester-specific reference range of serum TSH for pregnant women in Korea and whether maternal subclinical hypothyroidism affects perinatal out...