Please use this identifier to cite or link to this item:
|Title:||Age-related morphometric changes in the pineal gland. A comparative study between C57BLI6J and CBA mice|
|Publisher:||Murcia : F. Hernández|
|Related subjects:||CDU::6 - Ciencias aplicadas::61 - Medicina|
|Abstract:||Relatively little is known about the effects of melatonin on the aging of the pineal, the organ which is the main place for synthesis of this hormone. Using simple morphometric methods, some parameters of the pineal gland, such as total volume, number of pinealocytes and pinealocyte volume were estimated in two mice strains: normal CBA and melatonin-deficient C57BLl6J. Two age groups, 6 weeks and 10 months, were studied in order to evaluate possible differential age-related changes between both strains. Pineals of both strains have similar morphometric and morphological features at 6 weeks of age. This suggests that pineal development, which has already concluded at 6 weeks of age, is not affected by the absence of melatonin synthesis in the pinealocytes. Later on, CBA pineal showed an increase in size caused by cellular hypertrophy. In contrast, the C57BLl6J pineal volume decreased by loss of pinealocytes in the same period of time. Semithin sections analysed by light microscopy did not show that this cell death was evident in the C57BL16J strain at any of the ages studied. Thus, a gradual loss of pinealocytes could be hypothesised in these pineals. These results suggest that pineal melatonin could have a role in the maintenance of pinealocyte viability and the increase of pineal size which takes place after development. The abnormal pattern observed in the C57BL16J pineal should be taken into account in future studies on this gland.|
|Primary author:||Cernuda-Cernuda, R.|
Muñoz Llamosas, M.
|Published in:||Histology and histopathology|
|Number of pages / Extensions:||6|
|Appears in Collections:||Vol.15, nº 4 (2000)|
Files in This Item:
|Agerelated morphometric changes in the pineal gland. A comparative study between C57BLI6J and CBA mice.pdf||3,95 MB||Adobe PDF||View/Open|
Items in Digitum are protected by copyright, with all rights reserved, unless otherwise indicated.