Table 1

Cytogenetic analysis of mouse metaphase II oocytes following in vitro exposure to the proteasome inhibitor MG-132

MG-132 (mcg/ml)
No. cells analyzed
No. MI oocytes (%)
No. MII oocytes (%)
No. premature centromere separation (%)
No. single chromatids (%)
No. haploid (%)
No. hypoploid (%)
No. hyperploid (%)

Control
130
13 (10.0)a
117 (90.0)
43 (36.8)a
1 (0.9)a
101 (86.3)
16 (13.7)
-0-a
5.0
158
19 (12.0)a
139 (88.0)
38 (27.3)
3 (2.2)a,b
121 (87.1)
18 (12.9)
-0-a
7.5
191
26 (13.6)a
165 (86.4)
44 (26.7)
11 (6.7)b
142 (86.1)
18 (10.9)
5 (3.0)b
10.0
125
53 (42.4)b
72 (57.6)
13 (18.1)b
11 (15.3)c
62 (86.1)
3 (4.2)
7 (9.7)c

Different superscripts among proportions in the same column indicate significant (P < 0.01) differences.

Mailhes et al. Cell & Chromosome 2002 1:2   doi:10.1186/1475-9268-1-2