Fetal prostate growth and development

Area of Science:

• Urology
• Developmental Biology
• Histology

Background:

• The prostate gland's development is crucial for male reproductive health.
• Understanding early prostate growth and secretory function is essential for identifying potential developmental abnormalities.

Purpose of the Study:

• To investigate the growth patterns, histogenesis, and secretory activity of normal fetal and newborn prostates.
• To characterize the developmental stages of the human prostate from 20 weeks gestation to 1 month of age.

Main Methods:

• Analysis of 107 whole cross-sectioned prostates from fetuses and newborns (20 weeks gestation to 1 month).
• Histological examination using Periodic Acid-Schiff (PAS) and alcian blue-PAS staining to assess secretory activity.
• Evaluation of squamous metaplasia and microcyst formation.
• Detection of prostate-specific antigen (PSA) and its relation to secretory activity.

Main Results:

• Prostate development progresses through three distinct stages: bud (20-30 weeks), bud-tubule (31-36 weeks), and acinotubular (37-42 weeks gestation).
• Secretory activity, indicated by PAS and alcian blue-PAS positivity, was observed in 65% of specimens by 20-30 weeks and over 87% by 37+ weeks gestation.
• Squamous metaplasia and microcysts were noted in the urethra and ducts; PSA was weakly detected and not correlated with PAS-detected secretion.

Conclusions:

• Normal prostate development involves sequential stages with increasing secretory activity.
• Early prostate secretory function is established prenatally, with PSA levels not directly correlating with this activity.
• Findings provide a baseline for understanding normal prostate development and potential deviations.