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Enkephalin positive sites in the developing human cerebellum
1Department of Anatomy, Chinese University of Hong Kong, Shatin, Hong Kong.
The International Journal of Neuroscience
|July 1, 1996
Summary
Enkephalin (ENK) positive sites appear in the developing human cerebellum early in gestation. These neurochemical markers are found in various cerebellar cells and fibers before birth.
Area of Science:
- Neuroscience
- Developmental Biology
- Neuroanatomy
Background:
- Enkephalin (ENK) is a key neuropeptide involved in pain modulation and reward pathways.
- Understanding the developmental expression of ENK in the human brain is crucial for insights into neurodevelopmental processes.
Purpose of the Study:
- To investigate the temporal and spatial expression patterns of enkephalin (ENK) in the developing human cerebellum.
Main Methods:
- Immunohistochemistry using the ABC method was employed.
- The study analyzed cerebellar tissue from human fetuses between 18 and 30 weeks of gestation.
Main Results:
- Enkephalin (ENK) positive sites were detected as early as 20 weeks gestation, initially in deep cerebellar nuclei.
- By 27 weeks, ENK positivity was observed in mossy fibers, climbing fibers, Purkinje basket, Golgi, and granule cells.
Conclusions:
- The human cerebellum exhibits enkephalin (ENK) positive fibers and neurons during prenatal development.
- These findings suggest a role for ENK in cerebellar maturation prior to birth.