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Tenascin expression and postnatal development of the human prostate
T Shiraishi1, H Kato, S Komada
1Department of Pathology, Mie Univeristy School of Medicine, Japan.
The International Journal of Developmental Biology
|June 1, 1994
Summary
Tenascin distribution in the human prostate changes during development, concentrating in the peripheral zone post-puberty. This pattern may explain the higher incidence of prostate cancer in this region.
Area of Science:
- Urology
- Developmental Biology
- Oncology
Background:
- The human prostate undergoes significant morphological changes during postnatal development.
- Understanding the molecular changes associated with prostate development is crucial for identifying disease risks.
Purpose of the Study:
- To investigate the spatiotemporal distribution of tenascin during human prostate postnatal development.
- To correlate tenascin expression patterns with prostatic growth and maturation.
- To explore the potential role of tenascin in the preferential development of prostatic carcinoma in the peripheral zone.
Main Methods:
- Immunohistochemistry using a monoclonal antibody specific to human tenascin.
- Avidin-biotin-complex method applied to paraffin-embedded prostate sections.
- Analysis of tenascin localization across different age groups: infantile, pubertal (9-13 years), and post-pubertal (14-21 years).
Main Results:
- Tenascin was weakly and diffusely distributed in infantile prostates, with occasional periglandular immunoreactivity.
- During puberty (9-13 years), prostate morphology showed increased acini density, with low tenascin immunoreactivity.
- In post-pubertal subjects (14-21 years), tenascin preferentially localized to the peripheral zone, coinciding with increased acini crowding, taller epithelium, and a rise in glandular area percentage in this zone.
Conclusions:
- Tenascin expression dynamics are closely linked to the development and maturation of the human prostate.
- The preferential distribution of tenascin in the peripheral zone during the post-puberal period suggests its potential involvement in the higher incidence of prostate cancer observed in this region.