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Evaluation of anemia and serum iPTH, calcium, and phosphorus in patients with primary glomerulonephritis

Ya Li1, Wen Zhang, Hong Ren

  • 1Department of Nephrology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, PR China.

Contributions to Nephrology
|May 22, 2013
PubMed

Insights

Primary glomerular diseases are the main cause of chronic kidney disease (CKD) in China. Anemia and metabolic bone disease, including abnormal parathyroid hormone, calcium, and phosphorus, are common complications in patients with glomerulonephritis (GN).

Area of Science:

  • Nephrology
  • Internal Medicine
  • Endocrinology

Background:

  • Glomerulonephritis (GN) is a significant contributor to chronic kidney disease (CKD) globally and in China.
  • Primary glomerular diseases are the leading cause of CKD in the Chinese population studied.
  • Complications like anemia and metabolic bone disease are prevalent in GN patients.

Purpose of the Study:

  • To determine the prevalence of anemia, abnormal serum intact parathyroid hormone (iPTH), calcium, and phosphorus in Chinese patients with primary GN.
  • To analyze the relationship between these complications and the stages of CKD.
  • To understand the impact of primary glomerular diseases on CKD development and progression in China.

Main Methods:

  • Retrospective analysis of medical histories and laboratory results from 2,924 primary GN patients.
  • Categorization of patients based on CKD stages (1-5) using glomerular filtration rate.
  • Statistical analysis to assess the prevalence of anemia, hypocalcemia, hyperphosphatemia, and elevated iPTH levels across different CKD stages.

Main Results:

  • Anemia prevalence increased significantly with CKD progression, reaching 80.2% in stage 5.
  • Hypocalcemia was significantly more prevalent in advanced CKD stage 5 (13.7%).
  • Hyperphosphatemia and elevated serum iPTH levels were significantly higher in advanced CKD stages (4-5) and correlated negatively with renal function.
  • Vitamin D insufficiency and deficiency increased as renal function declined.

Conclusions:

  • Primary glomerular diseases are the predominant cause of CKD in China.
  • Anemia and metabolic bone disease (abnormal calcium, phosphorus, iPTH, and vitamin D) are frequent complications in Chinese GN patients.
  • These complications worsen with the progression of CKD, highlighting the need for monitoring and management.

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