Publications by authors named "John Fuqua"

A retrospective review of gender-affirming hormone therapy was conducted in 101 transgender boys followed in the pediatric endocrine clinic. Eighty-seven percent were postmenarchal at the initial visit. Of the 44% prescribed gonadotropin-releasing hormone analogs (GnRHas), insurance coverage was denied in 34% and an average of 4.

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Androgen blockers are an essential part of gender affirming care in post-pubertal transfeminine patients. Bicalutamide is a highly potent androgen receptor blocker that is used primarily in adults. We aimed to review our experience with the use of bicalutamide in transgender adolescents who were assigned male at birth.

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Delayed puberty is defined as absent testicular enlargement in boys or breast development in girls at an age that is 2 to 2.5 SDS later than the mean age at which these events occur in the population (traditionally, 14 years in boys and 13 years in girls). One cause of delayed/absent puberty is hypogonadotropic hypogonadism (HH), which refers to inadequate hypothalamic/pituitary function leading to deficient production of sex steroids in males and females.

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Article Synopsis
  • - Peripheral precocious puberty (PPP) is the early sexual maturation that occurs without influence from the central nervous system.
  • - Diagnosis involves identifying the underlying causes, which can be congenital or acquired, and requires hormonal tests, imaging, and sometimes genetic analysis.
  • - There are effective treatments for almost all forms of PPP, and ongoing research aims to improve these treatments and enhance our understanding of the underlying mechanisms.
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Spanning from bench to bedside, the history of normal and precocious puberty is characterized by a series of remarkable advances that have illuminated reproductive physiology and profoundly impacted clinical care. Early recognition of the hypothalamic and pituitary control of ovarian and testicular function led to the identification of GnRH as the key driver of pubertal onset. Decades later, discovery of the kisspeptin system further refined our understanding of human reproductive neuroendocrinology.

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Article Synopsis
  • Pediatric reference intervals are essential for effective clinical decision-making and should reflect healthy child development changes, but current intervals vary widely for common biomarkers.
  • A review analyzed existing pediatric reference intervals from various sources but found that many published intervals are not utilized in practice, leading to inconsistency in care.
  • There is an urgent need to accurately represent the biochemistry of child development and create reliable pediatric reference intervals to enhance pediatric healthcare.
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Article Synopsis
  • Many individuals assigned female at birth who identify as transgender males or nonbinary often start testosterone therapy by age 24, but there's limited research on their cardiovascular health.
  • This review aims to provide youth-serving practitioners with insights on evaluating cardiovascular health in this specific group during testosterone treatment.
  • Notable cardiovascular changes from testosterone include increased red blood cell mass, with potential effects on heart health that may be influenced by mental health factors and lifestyle choices.
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Children with spina bifida are at greater risk of developing central precocious puberty (CPP) compared to others. Therefore, early recognition and timely referral for further evaluation by a pediatric endocrinologist allows appropriate management that reduces the impact of CPP. This article discusses the diagnosis and management of CPP in children with spina bifida.

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It is estimated that a significant percentage of individuals with spina bifida (SB) are shorter than their age-matched typical peers. Parents of children with spina bifida may ask if human growth hormone is appropriate for their child. This article discusses short stature and the use of human growth hormone among children with SB.

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The care of individuals with disorders/differences of sex development aims to enable affected individuals and their families to have the best quality of life, particularly those born with severe genital ambiguity. Two of the biggest concerns for parents and health professionals are: (1) making a gender assignment and (2) the decisions of whether or not surgery is indicated, and if so, when is best for the patient and parents. These decisions, which can be overwhelming to families, are almost always made in the face of uncertainties.

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This update, written by authors designated by multiple pediatric endocrinology societies (see List of Participating Societies) from around the globe, concisely addresses topics related to changes in GnRHa usage in children and adolescents over the last decade. Topics related to the use of GnRHa in precocious puberty include diagnostic criteria, globally available formulations, considerations of benefit of treatment, monitoring of therapy, adverse events, and long-term outcome data. Additional sections review use in transgender individuals and other pediatric endocrine related conditions.

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Purpose: The purpose of the study was to describe the novel use of bicalutamide in transgender youth.

Methods: This is a retrospective review of patients with gender dysphoria followed in the pediatric endocrine clinic at Riley Hospital for Children.

Results: Of 104 patients with gender dysphoria, 23 male-to-female adolescents received bicalutamide 50 mg daily as a second-line puberty blocker after insurance company denial of a gonadotropin-releasing hormone analog.

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Purpose: Our Pediatric Endocrinology Clinic has seen a sharp increase in referrals for gender dysphoria (GD) during recent years. However, the frequency and characteristics of referrals have not been objectively examined.

Methods: A retrospective chart review of referrals for GD during the past 13 years was performed.

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Turner syndrome is one of the most common chromosomal abnormalities affecting female infants. The severity of clinical manifestations varies and it affects multiple organ systems. Women with Turner syndrome have a 3-fold increase in mortality, which becomes even more pronounced in pregnancy.

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