[Neurosecretory activity during regeneration in the oligochaete annelid Tubifex tubifex].
Following amputation of the posterior half of Tubifex, all the nerve cells stainable by paraldehyde fuchsin (NF) immediately discharged. Fifteen minutes later, some stained NFs reappeared. Their number increased, reached a peak far above the normal level, then slowly decreased. This peak occurred 8 hours after amputation in the brain, after 3-4 days in the ventral ganglia. A similar cycle took place during the anterior regeneration of Tubifex whose four anterior segments were previously cut away. Following a double amputation (behind the first or fourth segment and at half length), the stimulation of the neurosecretory activity was even clearer, the number of NFs reaching a higher and earlier peak. Correlatively, the regenerative histogenesis was accelerated in the caudal blastema.
D000818:Animals; D009474:Neurons / Q000502:physiology; D009489:Neurosecretion; D009835:Oligochaeta / Q000502:physiology*; D010242:Paraldehyde; D012038:Regeneration; D012394:Rosaniline Dyes; D013194:Staining and Labeling / Q000379:methods; D013997:Time Factors
D012394:Rosaniline Dyes; D010242:Paraldehyde
Activité neurosésecretoire au cours de la régénération, chez l-annélide oligochète Tubifex tubifex.