mortality/aging
• fewer than expected homozygotes are found, no time of lethality is provided
|
renal/urinary system
• microcystic tubules
|
• mild
|
• mild
|
• mild increase in Mg2+ excretion
• no alterations are detected in Ca2+, protein, or glucose excretion
|
• urine osmolality is decreased and water deprivation fails to increase urine osmolality
|
• significantly lower at 6 weeks of age
|
• in males fractional excretion of urate is about 100% indicating severely impaired urate reabsorption
• in females fractional excretion of urate is about 150% indicating severely impaired urate reabsorption and increased tubular excretion
• in males and females, 24 hr urate excretion is increased 20 to 30 fold
|
• severe chronic interstitial fibrosis is seen in fibrotic areas
• granular precipitates in atrophic tubules are surrounded by severe chronic inflammation
|
• progressive and severe chronic tubulo-interstitial nephritis
|
• cortical atrophy
|
• at 16 weeks of age interstitial fibrosis with tubular atrophy is seen in about 50% of the superficial renal cortex
• granular precipitates in atrophic tubules are surrounded by interstitial fibrosis
|
• at 16 weeks of age interstitial fibrosis with tubular atrophy is seen in about 50% of the superficial renal cortex
|
• newborns display discrete signs of tubular dilation
|
• develop obstructive intratubular urate lithiasis by 2 weeks of age
|
• severely impaired urate reabsorption in the kidney
|
homeostasis/metabolism
• plasma urate levels are increased
|
• mild increase
|
• mild
|
• mild
|
• mild increase in Mg2+ excretion
• no alterations are detected in Ca2+, protein, or glucose excretion
|
• urine osmolality is decreased and water deprivation fails to increase urine osmolality
|
• significantly lower at 6 weeks of age
|
• in males fractional excretion of urate is about 100% indicating severely impaired urate reabsorption
• in females fractional excretion of urate is about 150% indicating severely impaired urate reabsorption and increased tubular excretion
• in males and females, 24 hr urate excretion is increased 20 to 30 fold
|
behavior/neurological
polydipsia
(
J:153089
)
• increase in water intake
|
growth/size/body
• beyond 37 weeks of age, males weigh less than controls
|
• microcystic tubules
|
immune system
• severe chronic interstitial fibrosis is seen in fibrotic areas
• granular precipitates in atrophic tubules are surrounded by severe chronic inflammation
|
• progressive and severe chronic tubulo-interstitial nephritis
|