Mice deficient in α-actinin-4 have severe glomerular disease
J. Clin. Invest. Claudine H. Kos, et al. 111:1683 doi:10.1172/JCI17988 [
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Figure 3(
a and
b) Kidney sections from 4-week-old mice, stained with H&E.
Actn4+/+ kidney (
a) and
Actn4–/– kidney (
b) photographed at ×10 magnification. (
c and
d) At higher magnification (×40), glomerular abnormalities are clearly visible in the
Actn4–/– mouse (
d), but not in the
Actn4+/+ littermate (
c): the
Actn4–/– kidney shows FSGS, with protein in tubules and areas of glomerular capillary collapse. A diseased glomerulus is indicated by an arrow (labeled “G”). A tubule filled with proteinaceous material is also indicated by an arrow (labeled “T”). (
e and
f) Kidney sections from 10-week-old mice, stained with H&E. (
e)
Actn4+/+ kidney; (
f)
Actn4–/– kidney. The
Actn4–/– kidney shows extensive disease, with sclerosed glomeruli, dilated tubules with proteinaceous material, and disrupted architecture. (
g) Gross appearance of
Actn4+/+ (left) and
Actn4–/– (right) kidneys from 10-week-old mice.