Serum ionized calcium in nephrotic syndrome

Area of Science:

• Nephrology
• Endocrinology
• Biochemistry

Background:

• Nephrotic syndrome is characterized by proteinuria, hypoalbuminemia, edema, and hyperlipidemia.
• Calcium homeostasis may be altered in nephrotic syndrome due to complex pathophysiological mechanisms.

Purpose of the Study:

• To investigate serum ionized calcium levels in patients with active nephrotic syndrome and during clinical remission.
• To explore the relationship between serum calcium fractions and disease activity.

Main Methods:

• Serum ionized calcium was measured in 12 patients with active nephrotic syndrome and 14 patients in remission.
• All participants had normal creatinine clearance and were untreated at the time of study.
• Serum complexed calcium and protein-bound calcium were also assessed.

Main Results:

• Mean serum ionized calcium was significantly lower in both patient groups compared to normal controls.
• Patients in remission had significantly higher serum ionized calcium than those with active disease.
• Elevated serum complexed and protein-bound calcium were observed, more pronounced in active nephrotic syndrome.

Conclusions:

• Serum ionized calcium levels are reduced in nephrotic syndrome and increase upon remission.
• Calcium dysregulation, including complexed and protein-bound forms, is associated with nephrotic syndrome activity.
• These findings highlight the importance of monitoring calcium levels in nephrotic syndrome patients.