Publications by authors named "P W Norup"

In recent years, the national Gender Identity Service for individuals under 18 years of age in Denmark has seen a considerable increase in referrals of youngsters during puberty. Given this development, it is important to deepen our understanding of the characteristics of contemporary youngsters seeking help for gender incongruence. This understanding can serve as the foundation for improving current treatment regimens by ensuring optimal individual assessment and care.

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Article Synopsis
  • Endogenous sex steroids significantly influence growth during puberty, but little research has focused on their effects in transgender adolescents undergoing hormone therapy.
  • This observational study analyzed the growth patterns, serum IGF-I, and IGFBP-3 levels in 219 transgender adolescents between 2016 and 2023, revealing that most trans girls reached adult heights consistent with their assigned sex at birth, while trans boys often remained shorter than their peers.
  • Findings indicated trans girls experienced a growth spurt during estradiol therapy, leading to a minor reduction in adult height compared to their target height, while trans boys did not benefit from hormone treatment in terms of height, highlighting disparities in growth outcomes between the two groups.
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Background: Serum insulin-like factor 3 (INSL3) is a Leydig cell biomarker, but little is known about the circulating concentration of INSL3 during hypothalamus-pituitary-testicular suppression.

Aim: To study the concomitant changes in serum concentrations of INSL3, testosterone, and LH during experimental and therapeutic testicular suppression.

Methods: We included serum samples from 3 different cohorts comprising subjects before and after testicular suppression: (1) 6 healthy young men who were treated with androgens (Sustanon, Aspen Pharma, Dublin, Ireland); 2) 10 transgender girls (male sex assigned at birth) who were treated with 3-monthly GnRH agonist injections (Leuprorelinacetat, Abacus Medicine, Copenhagen, Denmark); and (3) 55 patients with prostate cancer who were randomized to surgical castration (bilateral subcapsular orchiectomy) or treatment with GnRH agonist (Triptorelin, Ipsen Pharma, Kista, Sweden).

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The acrosome of the spermatozoa is required for fertilization and in the raw ejaculate the percentage of viable acrosome-intact spermatozoa, the acrosomal status, is higher among men with good semen quality. Here we investigated if the acrosomal status of the processed semen preparations used at a fertility clinic can also be informative and whether it is associated with fecundity. The acrosomal status was measured by image cytometry on purified semen samples from couples during in vitro fertilization (IVF) ( = 99) and intracytoplasmic sperm injection (ICSI) ( = 107) treatment.

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Sleeping disturbance constitutes a major problem occurring in 25% of people aged over 65. Among the most frequent reasons of insomnia one can mention the overuse of coffee, alcohol, smoking, using some drugs, stress, depression, neurosis, dementia, chronic diseases. Idiopathic insomnia constitutes less than 5% of cases.

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