title: [Studies on the half-life of C-terminal parathyroid hormone in chronic renal failure].
abstract: Subtotal parathyroidectomy (PTX) was performed for patients with hyperparathyroidism associated with chronic renal failure, and from sequential determination of PTH after PTX, the half-life of 2 different C-PTH was calculated. The half-life (T 1/2) of 46 approximately 84 PTH and 65 approximately 84 PTH was 18.1 +/- 3.9 and 14.0 +/- 2.2 hours (Mean +/- SD) respectively. Half-life of both C-PTH was markedly prolonged compared with that (30 approximately 60 minutes) of healthy subjects. It is considered that the longer half-life of 46 approximately 84 PTH than 65 approximately 84 PTH might be attributed to the difference of molecular weight, degrading enzymes and operative procedures. Determined value of C-PTH in chronic renal failure should be evaluated in consideration of prolonged metabolic clearance of C-PTH.
mesh_terms: D000328:Adult; D005260:Female; D006207:Half-Life; D006801:Humans; D006961:Hyperparathyroidism / Q000209:etiology / Q000601:surgery; D007676:Kidney Failure, Chronic / Q000097:blood* / Q000150:complications; D008297:Male; D008875:Middle Aged; D008970:Molecular Weight; D010280:Parathyroid Glands / Q000601:surgery; D010281:Parathyroid Hormone / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*
chemical_list: D010281:Parathyroid Hormone; D010446:Peptide Fragments; C023443:carboxyl-terminal parathyroid hormone