We studied the expression of neurosynthesis and nerve endings. Following acoustic trophins and their Trk receptors in the chicken cotrauma, regenerated hair cells acquired BDNF mRNA chlea. Based on in situ hybridization, brain-derived expression at early stages of differentiation. Trunneurotrophic f
Distribution of neurotrophin and TrK receptor-like immunoreactivity in the adrenal gland of birds
✍ Scribed by Nadia Arcamone; Carla Lucini; Lucianna Maruccio; Luciana Castaldo; Giuliana Gargiulo; Paolo De Girolamo
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 522 KB
- Volume
- 69
- Category
- Article
- ISSN
- 1059-910X
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✦ Synopsis
Abstract
The occurrence and localization of neurotrophins and their specific TrK receptor‐like proteins in the adrenal gland of chicken, duck and ostrich were examined by immunohistochemical methods. In all species studied NGF‐, TrK A‐ and TrK C‐like immunoreactivity was observed in neurons and fibers of adrenal ganglia. Thin TrK A‐ and TrK C‐like immunoreactive fibers were also observed among chromaffin cells. NT‐3‐like immunoreactivity was detected in chromaffin cells as revealed by the double immunolabelings NT‐3/chromogranin A and NT‐3/DβH. The interrenal tissue never showed IR to any neurotrophins and TrK tested, and none of the adrenal structures displayed immunoreactivity to BDNF and TrK B. Double immunolabelings NGF/TrK A, NGF/TrK C and TrK A/TrK C showed colocalization in some neurons and fibers in adrenal ganglia. In adrenal glands of the species studied, the distribution of neurotrophins and TrK receptors could suggest an involvement of NT‐3 on neuronal populations innervating adrenal ganglia by means of its high affinity receptor TrK C and low affinity receptor TrK A. In addition, NGF could be utilized by neuronal populations of adrenal ganglia through its preferential receptor TrK A by an autocrine or paracrine modality of action. Microsc. Res. Tech. 69:130–137, 2006. © 2006 Wiley‐Liss, Inc.
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