Abstract：
:Tritiated thymidine ([3H]TdR) autoradiography revealed a correlation between the rate of cell proliferation of rod precursor cells in the outer nuclear layer (ONL) of the goldfish retina and the postoperative interval after crush of the optic nerve (ONC). Ten days after unilateral ONC there were more labeled nuclei in the ONL of the nerve-crushed retina than in the intact, contralateral retina of the same fish one day after single bilateral intraocular injections of [3H]TdR. From 15 to 25 days after ONC, however, fewer labeled nuclei were found in the ONL of nerve-crushed retinae than in controls, illustrating a decrease in the number of cells entering the S-phase of the cell cycle; by 35 days the differences had disappeared, demonstrating that cell birth recovered to normal. When examined one month after [3H]TdR injection, fewer labeled cells were present in the nerve-crushed retina at all postoperative intervals. Examination of the numbers of labeled cells at various postoperative periods following bilateral ONC, when one retina was examined one day and the other retina was examined one month after [3H]TdR administration revealed that the ratios of labeled cells between the two retinae varied as a function of time after ONC. Therefore, optic nerve crush appears to enhance the proportion of initially labeled cells in the ONL that are either fated to undergo further cell generation cycles or to die.
journal_name
Brain Resjournal_title
Brain researchauthors
Henken DB,Yoon MGdoi
10.1016/0006-8993(89)90642-2subject
Has Abstractpub_date
1989-11-06 00:00:00pages
247-59issue
2eissn
0006-8993issn
1872-6240pii
0006-8993(89)90642-2journal_volume
501pub_type
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