Structure and behaviour of ultimobranchial gland in response to vitamin D3--induced hypercalcemia in male Clarias batrachus
Swarup, K.; Srivastav, S.P.
Archives d'Anatomie Microscopique et de Morphologie Experimentale 73(4): 223-229
1984
ISSN/ISBN: 0003-9594 PMID: 6085715 Document Number: 241061
Hypercalcemia was induced in C. batrachus by treating them with vitamin D3 (5000 I.U./100 g body wt) and/or 0.5% solution of CaCl2. The animals were killed on the 1st, 5th, 9th, 13th and 17th days after the initiation of the experiment. Histological preparations of the ultimobranchial gland (UBG) were made. The gland exhibited nuclear hypertrophy, hyperplasia and loss of staining response corresponding to the rise in serum Ca levels. At later intervals, the UBG shows exhaustion and degeneration which is evident from vacuolization and nuclear shrinkage of the ultimobranchial cells after day 13 in groups B and C and day 9 in group D.