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Tritiated thymidine ([H-3]-TdR) and immunocytochemical tracing of cellular fate within the asexually dividing cestode Mesocestoides vogae (syn. M-corti)

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Smith, AG and McKerr, George (2000) Tritiated thymidine ([H-3]-TdR) and immunocytochemical tracing of cellular fate within the asexually dividing cestode Mesocestoides vogae (syn. M-corti). PARASITOLOGY, 121 (Part 1). pp. 105-110. [Journal article]

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Abstract

This report documents the presence of an active thymidine kinase (TK) system within Mesocestoides vogae tetrathyridia as quantified by tritiated thymidine ([H-3]-TdR) incorporation using liquid scintillation counting. A 100-fold increase in [H-3]-TdR incorporation was observed at 37 degrees C when compared with its incorporation at 0 degrees C. Thymidine's competitive analogue, BrdU, competed for sites within newly replicated DNA. Immunohistochemical trials performed here using antibodies against BrdU identified cells that have entered and passed through S-phase. Positively stained nuclei were most numerous at the anterior tip of tetrathyridia especially within the ganglia, lesser numbers of these cells occurred along the growing commissure arid amongst surface tegumental cytons suggesting that stem cells do not exist in one region but are found throughout the entire body. As M. vogae has no internal organ systems the major sites for cell proliferation are those exhibiting maximal cell recruitment and undergoing tissue repair. These results show that it is possible to monitor changes in the cell recruitment pattern within this cestode. Thus use of BrdU and immunohistochemistry demonstrates how spatial arrangement and cellular reorganization can be successfully traced within M. vogae.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
Biomedical Sciences Research Institute > Molecular Medicine
Biomedical Sciences Research Institute > Molecular Medicine > Nano Systems Biology
ID Code:12016
Deposited By:Dr G McKerr
Deposited On:17 Feb 2010 11:08
Last Modified:10 Jun 2010 12:03

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