Comparison the Serum Level of Paraoxonase Activity in Frequent Relapse and Infrequent Relapse Patients with Nephrotic Syndrome
Keywords:INS, Frequent relapse , infrequent relapse, PON
Nephrotic syndrome (NS) is distinguished by heavy proteinuria (urine protein:creatinine ratio ?2000 mg/g
or ?300 mg/dL, or 3+ protein on urine dipstick), hypoalbuminemia (?2.5 g/dL), and edema. Leakage of
massive amounts of serum proteins into the urine leads to a hypercoagulable state, a higher rate of infectious
disease, and the dysregulation of fluid balance. Idiopathic nephrotic syndrome (INS)
is one of the most common renal problems in children encountered in day-to-day nephrology practices.
The present study was aimed to evaluate the oxidant/ antioxidant status by measuring paraoxonase (PON)
activities as well as total antioxidant capacity in steroid sensitive nephrotic syndrome (frequent and infrequent
relapse) and compares it with healthy control children . Paraoxonase activity by spectrophotometer in three
groups consisted of age and sex matched (30) patients with Frequent relapse nephrotic syndrome FRNS ,
(30) patients with infrequent relapse nephrotic syndrome (IFRNS) and (30) healthy control children. The
serum level of paraoxonase activity in infrequent relapse group was 101.61±43.0 IU which far less than
frequent relapse group (160.44±44.22 IU) or controls (228.35±32.35 IU) with highly significant differences.
Of note, the difference between control group and frequent relapse group was highly significant.
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