Endocrine Abstracts

We present a case of severe malignant pheochromocytoma complicated with intestinal pseudo-obstruction, which was refractory to conventional therapies but reacted to intravenous administration of an α-blocker, phentolamine.Malignant pheochromocytoma typically metastasizes to bones, liver, lungs, and lymph nodes, and average 5-year survival rate in the patient with metastases is approximately 50%. Treatment options for malignant pheochromocytoma inclu...

Back ground: Numerous researches indicate that DHEA administration decreases fat mass in human and rodent. We evaluated the effects of DHEA treatment on adiposity. Male Otsuka Long evans fatty (OLETF) rats, hereditary obese type 2 diabetic animals derived from long evans tokushima (LETO) rats. These rats were fed with or without (control) 0.4% DHEA containing food for 52 weeks. Telomere length as a marker of whole cell division in adipose tissue were assessed. Genomic DNA isol...

Objective: Bisphenol A (BPA) exposure may promote obesity, but its effect on bone mineral density (BMD) has not been reported in humans. In the present study, we aimed to examine the complex interplay between BPA exposure, fat mass, fat-free mass, serum estradiol, leptin, osteocalcin levels and BMDs in a group of premenopausal women.Methods: A total of 246 Chinese premenopausal women aged 20 years and older with regular menstrual cycles were investigated...

Introduction: Pheochromocytoma (PHEO) is a rare tumor of chromaffin cells with variable clinical presentation. Adrenal PHEOs secrete excessive amounts of noradrenaline or of noradrenaline plus adrenaline, whereas extra-adrenal PHEOs (paragangliomas) mostly secrete noradrenaline alone due to lack of expression of phenylethanolamine-N-methyltransferase (PNMT), the key enzyme converting noradrenaline into adrenaline. We report two exceptional cases of paragangliomas responsible f...

Introduction: Recent studies have elucidated that C-type natriuretic peptide (CNP), a member of natriuretic peptide family, is a potent stimulator of endochondral bone growth; CNP and its membranous guanylyl cyclase receptor, GC-B are expressed in growth plate, and mice with targeted overexpression of CNP in growth plate exhibit prominent skeletal overgrowth, whereas CNP or GC-B knockout mice develop severely short stature phenotype owing to their impaired endochondral bone gr...

Background and aims: Excess GH causes insulin resistance resulting in impaired glucose metabolism. Although diabetes mellitus (DM) is common in patients with acromegaly, diabetic ketoacidosis (DKA) is rarely associated with acromegaly. Actually only 11 DKA patients have been anecdotally reported as the first presentation of acromegaly so far. Here we present nine cases of DKA as the first presentation of 860 consecutive patients with acromegaly and their clinical characteristi...

Objective: This study was designed to determine whether TRAb levels are correlated with the activity and severity of Graves’ ophthalmopathy (GO).Subjects and Methods: The subjects were 179 untreated Graves’ disease patients. TRAb was assayed with Elecsys TRAb at the initial visit, and an ophthalmic assessment was performed within 3 months. The activity of the ophthalmopathy was assessed by clinical activity scores (CASs) and MRI T2 relaxation t...

Context: Postpartum hyperthyroidism (PH) is one of the postpartum thyroid disorders that occurs during the first year postpartum and PH is caused by destructive thyroiditis and recurrent Graves’ disease. PH is an exacerbation of an underlying autoimmune thyroiditis that is aggravated by the immunological rebound that follows the partial immunosuppression that occurs during pregnancy. The prevalence of PH among women with Graves’ disease (GD) who had been treated with...

Introduction: Activating somatic mutation of the BRAF gene (V600E) has been identified as the most common genetic event in papillary thyroid carcinoma (PTC) with a variable frequency (32–87%) in various races by different methods.In this study, we report the genetic analysis of BRAF mutation in a Korean cohort of 211 PTC by peptide nucleic acid clamp real-time PCR.Methods: PNA clamp real-time PCR was applied for BRAF analysis ...

Background: Various molecular mechanisms play a role in the pathogenesis of papillary thyroid cancer(PTC). Understanding the underlying pathogenesis and genetic changes is needed to improve clinical outcomes in PTC. In this study, it was aimed to determine the frequency of, BRAF V600E TERT promoter and NRAS mutations in Turkish patients with papillary thyroid cancer, the relationship of mutations between clinicopathological features and distant met...