Page 49 - 南京医科大学自然版
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第45卷第8期 郭 爽,倪 曼,程 丽,等. 烟酸通过SIRT3/SOD2通路改善老龄小鼠体外成熟的卵母细胞质量[J].
2025年8月 南京医科大学学报(自然科学版),2025,45(8):1101-1109,1177 ·1105 ·
A B
Young Old Old+NA
100 ***
*
80
(%) 60
MⅡ PBE 40
20
0
Young Old Old+NA
C Young Old Old+NA D
8 ***
Fluorescence intensity 2 CG signals
(AU)
CG 6 4 *
of
0
Young Old Old+NA
C E 60
*** **
DAPI (%) 40
Mos⁃location of CG percentage 20
0
Young Old Old+NA
Merge
A:Representative images of the MⅡ⁃stage oocytes(Scale bars=200 μm). B:The percent of PBE in the young,old,and old+NA groups(n=20). C:
Representative figures of CG distribution in the young,old,and old+NA groups(Scale bars=25 μm). D:The statistical analysis of CG signals(n=15). E:
* ** ***
The statistical analysis of the percentage of mislocalized CG in MⅡ⁃stage oocytes(n=15). P < 0.05,P < 0.01 and P < 0.001.
图2 卵母细胞PBE和CG分布
Figure 2 PBE and CG distribution in MⅡ⁃stage oocytes
A B C
Young Old Old+NA
(%) 40 *** * 40 *** *
Percentage of aberrant spindle 30 0 Percentage of misaligned (%) chromosome 30 0
20
20
10
10
Old Old+NA
Young
Young
Old Old+NA
A:Representative images of the spindle morphology and chromosome alignment in MⅡ⁃stage oocytes(Scale bars=25 μm). B:The rate of abnormal
*
spindles(n=30). C:The rate of misaligned chromosomes(n=30). P < 0.05 and *** P < 0.001.
图3 MⅡ期卵母细胞纺锤体组装和染色体排列
Figure 3 Spindle assembly and chromosome alignment in MⅡ⁃stage oocytes

