J Korean Med Sci.  1998 Aug;13(4):405-413. 10.3346/jkms.1998.13.4.405.

Cytokinetic pattern in the thoracic spinal cord of chick embryos (incubation day 5-13) using PCNA staining and TUNEL method

• Wang KC
• Park IS
• Chi JG
• Lee MS
• Lee YJ
• Cho BK

• KMID: 1038169
• DOI: http://doi.org/10.3346/jkms.1998.13.4.405

Abstract

For the cytokinetic studies using spinal cords of chick embryos, chronological patterns of cell proliferation and programmed cell death (apoptosis) should be known. Information in the early stages of chick embryos is available while data on later stages are seldom available. To investigate the chronological patterns of cell proliferation and apoptosis in the thoracic spinal cord of normal chick embryos on incubation day 5, 6, 8, 10 and 13 (Hamburger and Hamilton stage 26-40), proliferating cell nuclear antigen (PCNA) staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) method were used. Cell proliferation was active at the germinal layer on days 5 and 6. It markedly declined on day 8 and became negligible on day 13. TUNEL-positive cells were mainly found in the germinal layer, the ventrolateral part of the mantle layer and the dorsal root ganglion. Compared to PCNA-positive cells, TUNEL-positive cells were sparse, especially after day 10, when only a few positive cells were scattered. These results will be used as a control data for the studies such as an experimental research for neural tube defects.

MeSH Terms

Animal
Apoptosis*
Cell Division
Chick Embryo
Proliferating Cell Nuclear Antigen/metabolism*
Spinal Cord/embryology
Spinal Cord/cytology*
Staining and Labeling
Thoracic Vertebrae/embryology
Thoracic Vertebrae/cytology*