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Minipuberty: Why Does it Happen?
Marianne Becker1, Volker Hesse2
1Pediatric Endocrinology and Diabetology (DECCP), Centre Hospitalier de Luxembourg, Luxembourg, Luxembourg, becker.marianne@chl.lu.
Hormone Research in Paediatrics
|June 30, 2020
Summary
Minipuberty is a temporary activation of the hypothalamic-pituitary-gonadal (HPG) axis in infants, crucial for development. This early hormonal surge influences genital growth, body composition, and cognitive functions, though its exact purpose remains under investigation.
Area of Science:
- Pediatric endocrinology
- Human development
- Reproductive biology
Background:
- Minipuberty is the transient activation of the hypothalamic-pituitary-gonadal (HPG) axis in early infancy.
- This hormonal surge occurs in the first 6 months for boys and 2 years for girls.
- Despite being known for decades, the precise function of minipuberty is not fully understood.
Purpose of the Study:
- To explore the significance of minipuberty as a critical imprinting period for various bodily functions.
- To review the established and potential roles of minipuberty in infant development.
- To highlight areas for future research in this developmental phase.
Main Methods:
- This study is a review of existing literature on minipuberty.
- It synthesizes findings on hormonal changes and their developmental impacts.
- No new experimental data were generated.
Main Results:
- Minipuberty involves elevated luteinizing hormone, follicle-stimulating hormone, estradiol, and testosterone.
- Key roles include genital organ development (penile growth, Sertoli cells, spermatogenesis).
- It influences infant body composition (BMI, body weight, growth velocity) and cognitive functions (language, vocalization).
Conclusions:
- Minipuberty is essential for imprinting critical bodily functions during early life.
- Testosterone and estradiol play significant roles in physical and cognitive development.
- Further research is needed to fully elucidate the long-term impacts and mechanisms of minipuberty.
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