title: Long-term treatment with calcium-alpha-ketoglutarate corrects secondary hyperparathyroidism.
abstract: Calcium-alpha-ketoglutarate (Ca-ket) is known as a highly effective phosphate (P) binder in hemodialysis (HD) patients. In addition, alpha-ketoglutarate has been shown to improve metabolic alterations. We investigated the effect of long-term P-binding therapy with Ca-ket to determine whether P accumulation is the main reason of secondary hyperparathyroidism (HPT) in HD patients or not. Ca-ket was prescribed to 14 HD patients as a soluble preparation in a mean dosage of 4.5 g/day (0.975 g elemental Ca) for a period of 36 months. Serum P continuously dropped from prestudy 2.6 +/- 0.1 (mean +/- SEM) to 1.9 +/- 0.07 mmol/l (p < 0.001), whereas serum Ca increased from 2.2 +/- 0.1 to 2.47 +/- 0.08 mmol/l (p < 0.05). Thus, Ca/P ratio in serum converted significantly from 0.91 +/- 0.02 (prestudy) to 1.28 +/- 0.01 (p < 0.001). Intact parathyroid hormone (iPTH) continuously normalized in all patients from 29 +/- 5 to 8 +/- 2 pmol/l (p < 0.001). The present data show that long-term treatment with Ca-ket normalizes secondary HPT by simultaneously P binding and correcting Ca/P ratio in serum without vitamin D treatment.
authors.forename: E
authors.initials: E
authors.lastname: Zimmermann
authors.forename: S
authors.initials: S
authors.lastname: Wassmer
authors.forename: V
authors.initials: V
authors.lastname: Steudle
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology / Q000517:prevention & control* / Q000628:therapy; D007656:Ketoglutaric Acids / Q000627:therapeutic use*; D008875:Middle Aged; D010281:Parathyroid Hormone / Q000097:blood*; D010710:Phosphates / Q000097:blood*; D012016:Reference Values; D006435:Renal Dialysis; D013997:Time Factors
chemical_list: D007656:Ketoglutaric Acids; D010281:Parathyroid Hormone; D010710:Phosphates