Journal of Morphological Sciences
http://www.jms.periodikos.com.br/article/587cb44c7f8c9d0d058b45c4
Journal of Morphological Sciences
Original Article

INCREASE IN THE CELL VOLUME OF THE RAT SUBMANDIBULAR GLAND DURING POSTNATAL DEVELOPMENT

Fernanda Amaral Silveira Coire; Adriano Luiz Odahara Umemura; Tania Mary Cestari; Rumio Taga

Downloads: 0
Views: 315

Abstract

The increase in the volume of acinar and convoluted granular tubule cells of the rat submandibular gland during the first 96 days of postnatal development was studied by morphometry. Absolute glandular mass increased significantly by 2,364% during the period studied, whereas the relative glandular mass decreased 0.21-fold from day 2 to day 7, remained stable from day 7 to day 28, and showed a significant 0.31-fold decrease between 28 and 96 days of life. Acinar cell volume did not increase during the first two weeks of postnatal development, but showed a significant increase (168%) by the end of the study period. Convoluted granular tubule cell volume increased by 132% between 28 and 96 days of postnatal life. The cell volume growth rate (daily gain) was similar for both cell types (about 14.7 μm3/day). These results show that there is a marked increase in the volume of acinar cells and of convoluted granular tubule cells during the postnatal development of the rat submandibular gland.

Keywords

Acinus, convoluted granular tubule, submandibular gland development
587cb44c7f8c9d0d058b45c4 jms Articles
Links & Downloads

J. Morphol. Sci.

Share this page
Page Sections