growth/size/body
weight loss
(
J:114988
)
• exhibit substantial loss of body weight before 9 months of age
|
renal/urinary system
• develop proteinuria before 3 weeks of age which progresses to massive proteinuria with age
• the onset and degree of proteinuria are variable
|
albuminuria
(
J:114988
)
• urinary albumin increases with age and reaches a plateau at 6 wks of age
|
• focal interstitial inflammation in close proximity to interlobular blood vessels
|
• mice exhbit renal abnormalities that are seen in patients with nephropathy with pretibial epidermolysis bullosa and deafness, however do no develop the typical skin or hearing abnormalities
|
• capsules are granulated because of cortical degeneration in severely affected kidneys
|
• exhibit loss of podocyte foot processes
|
• foot processes in contact with the abnormal GBM are effaced
|
• exhibit complete loss of glomerular epithelial slit diaphragm architecture
• glomerulosclerosis precedes the loss of glomerular epithelial slit diaphragm components
|
• glomerular basement membrane (GBM) of some capillary loops is disorganized, laminated, abnormally thick and forms extensive spikes
|
• GBM of some capillary loops is abnormally thick
|
• capillary collapse in severely affected kidneys
|
• the capillary endothelium is swollen
|
• fenestrations are occasionally lost
|
• mesangial hypercellularity
|
• show expansion of the mesangial matrix
|
• exhibit focal glomerulosclerosis; glomeruli are segmentally or globally sclerosed with extensive deposits of basement membrane components
|
• parietal epithelial crescents in severely affected kidneys
|
• tuft adhesions to Bowman's capsule with extracapillary cell proliferation and fibrosis are observed
|
• exhibit interstitial and periglomerular fibrosis
|
• severely affected kidneys are contracted
|
• proximal tubules either show degeneration of varying severity or are dilated
|
• proximal tubules are either dilated or show degeneration of varying severity
|
renal cast
(
J:114988
)
• in severe cases, proximal tubules exhibit protein casts indicative of proteinuria
|
• severely affected kidneys have a granular surface while mildly affected kidneys show a relatively smooth and intact surface
|
• capsules are granulated because of cortical degeneration in severely affected kidneys
• proximal tubules may show degeneration of varying severity
|
• develop severe renal failure, caused by progressive abnormalities of the glomerular basement membrane, loss of podocyte foot processes, glomeruloscelrosis, and cystic tubular dilation
|
homeostasis/metabolism
• develop proteinuria before 3 weeks of age which progresses to massive proteinuria with age
• the onset and degree of proteinuria are variable
|
albuminuria
(
J:114988
)
• urinary albumin increases with age and reaches a plateau at 6 wks of age
|
immune system
• focal interstitial inflammation in close proximity to interlobular blood vessels
|
cardiovascular system
• capillary collapse in severely affected kidneys
|
• the capillary endothelium is swollen
|
• fenestrations are occasionally lost
|
hearing/vestibular/ear
N |
• do not exhibit a hearing impairment
|
integument
N |
• skin integrity is not impaired
|
cellular
• mesangial hypercellularity
|