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Effect of a GnRH injection on kisspeptin levels in girls with suspected precocious puberty: a randomized-controlled pilot study.
J Pediatr Endocrinol Metab
January 2025
Department of Paediatrics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Objectives: Kisspeptin plays a major role in the onset of puberty by stimulating the gonadotropin-releasing hormone (GnRH) neurons. The aim of this study was to investigate whether GnRH inhibits kisspeptin secretion via a negative feedback mechanism and potential associations between kisspeptin levels and other hormones of importance for pubertal onset.
Methods: Thirteen girls with suspected central precocious puberty underwent a GnRH stimulation test twice in a randomized, placebo-controlled manner.
Elevated estradıol ın a prepubertal female: wıthın-laboratory systematıc and practıcal ınterference screenıng.
Scand J Clin Lab Invest
January 2025
Department of Medical Biochemistry, Ministry of Health, Ankara Bilkent City Hospital, Ankara, Turkey.
Analytical errors related to endogenous or exogenous substances are a cause of unnecessary investigation, intervention, and patient concern especially in immunoassay platforms. In this report, we systematically screened for estradiol interference using a practical algorithm. For extended research in interference screening, repeated estradiol measurements for control and case samples were carried out for method comparison (three immunoassay platforms and one liquid chromatography-mass spectrometry (LC-MS/MS) measurement), dilution test, polyethylene glycol (PEG) precipitation, and heterophile antibody blocking tube.
View Article and Find Full Text PDFPseudoprecocious puberty and gynaecomastia as presenting features of Peutz-Jeghers syndrome.
BMJ Case Rep
January 2025
Diabetes and Endocrinology, Children's Health Ireland at Crumlin, Dublin 12, Ireland.
A boy in mid-childhood presented with right-sided gynaecomastia, which was excised. He represented and, on review by endocrinology, Tanner staging showed stage 2 left-sided glandular breast tissue and some features of virilisation. His testicular volumes remained prepubertal (3 mL).
View Article and Find Full Text PDFDiagnostic value of fasting insulin and insulin-like growth factor-1 levels in girls with central precocious puberty.
J Pediatr Endocrinol Metab
January 2025
117977 The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan Province, China.
Objectives: The gonadotropin-releasing hormone (GnRH) provocation test is crucial for diagnosing central precocious puberty (CPP). However, due to its invasion and high cost, it is essential to find a simpler biomarker. This study aimed to investigate the feasibility of fasting insulin (FINS) and insulin-like growth factor-1 (IGF-1) as potential biomarkers for diagnosing girls with CPP and to analyze their effects on puberty development.
View Article and Find Full Text PDFChanges in blood glucose and lipid metabolism levels in children with central precocious puberty and its correlation with obesity.
Front Pediatr
January 2025
Department of Pediatrics, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
Objective: This study analyzed the changes in blood glucose and lipid metabolism levels in children with central precocious puberty (CPP) and the correlation between CPP and obesity.
Methods: In total, 88 children with CPP aged 6-10 years who were admitted to our hospital between January 2023 and June 2024 (the CPP group), and 88 children without CPP in the same age group who received health check-ups (the non-CPP group) were retrospectively enrolled in this study. General data [gender, age, bone age, and body mass index (BMI)] were collected.
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