THE TRANSNEURONAL DEGENERATION IN THE LATERAL GENICULATE BODY OF INFANT RABBITS AFTER EYEBALL ENUCLEATION
- VernacularTitle:幼小家兔眼球摘除后外侧膝状体的跨元溃变
- Author:
Xiangting ZHOU
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1957;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Twenty eight rabbits were divided into two groups with exception of three used as control. The right monocular enucleation was performed at five and twenty days postnatal respectively in the two experimental groups. The animals were sacrificed at intervals that ranged from 1 to 150 days.The qualitative and quantitative observations showed that the cell changes in the dorsal lateral geniculate nucleus following enucleation were different in the 2 groups, In the first group, the developing cells in the dorsal lateral geniculate nucleus arrested growth immediately following enucleation, but the affected cells continued to differentiate for 1～10 days postoperatively. Subsequently, there were no marked further cell changes until 150 days after enucleation. In the second, the mature neurons in the dorsal lateral geniculate nucleus atrophied rapidly to the maximization during 5～7 days postoperatively. There was no any cell loss to be found in either group. The average decrease in perikaryon size was 30～40％, in nucleus size was 25～30％, and in nucleolus size was 20～25％.The cell changes in the lateral part of the contralateral dorsal lateral geniculate nucleus were compared to the medial part of the ipsilateral dorsal lateral geniculate nucleus after monocular removal. While the cells in the lateral part of the ipsilateral dorsal lateral geniculate nucleus were normal just as in the medial part of the contralateral dorsal lateral geniculate nucleus.The neurons in the ventral lateral geniculate nucleus had no changes to be found in every case.
