ESPE Abstracts

Objective: This project aims to evaluate the effect of two isotopically labelled internal standards on the quantification of 17OHP by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) as an orthogonal technique.Methods: Three LC-MS/MS and one GC-MS/MS laboratories, spanning four countries worldwide, who routinely measure serum17OHP, compared two internal ...

Background: Serum dihydrotestosterone (DHT) is an important analyte for the clinical assessment of disorders of sex development. It is also reportedly a difficult analyte to measure. Currently there are significant gaps in the standardisation of this analyte, including no external quality assurance (EQA) program available worldwide to allow for peer performance review of DHT.Objective and hypotheses: We therefore proposed to establish an EQA program for ...

Objective: This project aims to evaluate the effect of two isotopically labelled internal standards on the quantification of 17OHP by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS) as an orthogonal technique.Methods: Three LC-MS/MS and one GC-MS/MS laboratories, spanning four countries worldwide, who routinely measure serum17OHP, compared two internal ...

Precocious puberty is defined by the development of secondary sexual characteristics before the age of 8 in girls and before the age of 9 in boys. If not diagnosed and treated at an early stage, precocious puberty can compromise final adult height and trigger psychological disturbances. Gonadotropin- releasing hormone analogs (GnRHa) contributes to achievement of target final height by reducing the acceleration of bone maturation.Objectives: To analyze c...

A full-term baby girl born with birth weight of 2.75 kg (10th–25th percentile) had an uneventful perinatal course and no history of gestational diabetes. She was admitted to nursery on day 4 for poor feeding. Physical examination was unremarkable. Blood glucose was 0.6 mmol/l upon admission and urine ketone was negative. Electrolytes and blood gas were normal. Glucose infusion rate of 11 mg/kg per min was required to maintain euglycemia. Critical samples revealed insulin ...

Background: Bone marrow transplantation (BMTx) involves pre-conditioning regimens that compromise fertility Delayed puberty and hypogonadism are common in children with beta thalassemia major, due to chronic disease and transfusion requirements, due to iron overload in endocrine glands.Objective and hypotheses: Pubertal induction using hCG and FSH prior to gonadotoxic conditioning before BMTx should result in spermatogenesis sufficient to store sperm. We...

Background: Wolfram syndrome, also known as Diabetes Insipidus, Diabetes Mellitus, Optic Atrophy, Deafness (DIDMOAD), is a rare neurodegenerative disease of autosomal recessive inheritance with incomplete penetrance. In addition, it may present with different endocrine and metabolic abnormalities such as pituitary dysfunction. We reported clinical features, biochemical features and mutational analysis of a boy with Wolfram syndrome.Case presentation: A 7...

Objective: To investigate the serum levels of omentin-1 and vaspin in obese children and their correlation with lipid metabolism.Methods: Fifty-nine children participated in the study, among the 59 subjects, 30 of were obese [(9.43±2.02) years old] and 29 were non-obese controls [(10.3±2.2) years old], there was no statistical difference in age between the two groups. Serum levels of omentin-1 and vaspin were measured by ELISA method.The concen...

Background: In paediatric patients with metabolic bone diseases, measurement of the concentrations of minerals including inorganic phosphate is often indicated, and hypophosphataemia is a clinically manageable biochemical disorder. The clinical interpretation of plasma or serum phosphate concentrations depends, to a certain extent, on the age- and gender-specific reference intervals applicable to the laboratory methods employed.Whereas h...

The girl was born full-term vaginally with birth weight 3.380kg. She had stayed in neonatal unit for 3 days for neonatal fever. Physical examination was unremarkable. She had normal-looking female external genitalia. She was discharged after a negative infection screen.She presented again at the age of 11 years with hoarseness of voice. Physical examination revealed normal growth and blood pressure. She had hoarseness of voice with mild laryngeal promine...