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Testosterone suppression impacts craniofacial growth structures during puberty : An animal study
Caio Luiz Bitencourt Reis1,2, Magali de Fátima Pereira Madureira2, Caio Luis Rocha Cunha2
1Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
Summary
Testosterone suppression during puberty negatively impacts craniofacial development in male rats. This study found altered growth measurements and histological changes in key facial structures following testosterone suppression.
Area of Science:
- Endocrinology
- Craniofacial Biology
- Developmental Biology
Background:
- Hormones are critical for growth and development.
- The specific effects of testosterone suppression during puberty on craniofacial growth are not fully understood.
Purpose of the Study:
- To investigate the impact of testosterone suppression during puberty on cephalometric measurements.
- To analyze histological changes in facial growth centers due to testosterone suppression.
Main Methods:
- Wistar male rats underwent orchiectomy (testosterone suppression) or sham surgery.
- Cephalometric measurements were taken during and after puberty.
- Histological analysis of condyle, premaxilla, and median palatine suture was performed.
Main Results:
- Testosterone suppression led to significant differences in linear and angular craniofacial measurements.
- Histology revealed decreased prechondroblast differentiation, delayed mineralization, and reduced collagen synthesis in suppressed rats.
- Reduced vascularization was observed in the median palatine suture of suppressed rats.
Conclusions:
- Testosterone suppression during puberty adversely affects craniofacial growth.
- These findings highlight the role of testosterone in normal pubertal craniofacial development.
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