ISSN:
1432-0568
Keywords:
Supraoptic nucleus
;
Cell nucleus
;
Perichromatin granules
;
Nuclear inclusions
;
Osmotic stimulation
;
Cycloheximide
;
Coiled body
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract The distribution of perichromatin granules (PGs), a storage form of pre-mRNAs, was studied in supraoptic neurons of control and osmotically stimulated rats, and also after treatment with cycloheximide, a protein-synthesis inhibitor. In non-cycloheximide-treated rats, neuronal activation by dehydration significantly decreased the number of PGs. Conversely, PGs were drastically increased in the supraoptic neurons of dehydrated rats treated with cycloheximide for 4 h. This suggests that cycloheximide does not interfere with the transcriptional activation induced by dehydration, but it affects the processing of newly synthesized pre-mRNAs. Moreover, protein-synthesis inhibition was associated with the formation of intranuclear bundles of tubular filaments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00185894
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