title: Urinary excretion of inorganic pyrophosphate by normal subjects and patients with renal calculi in north-western India and the effect of diclofenac sodium upon urinary excretion of pyrophosphate in stone formers.
abstract: 24 h urinary pyrophosphate excretion was studied in 20 normal healthy subjects and 75 idiopathic stone formers from north-western regions of India. The mean 24-hour urinary excretion of pyrophosphate was significantly low in stone formers (50.67 +/- 2.16 mumol/24 h) as compared to that of normal subjects (71.46 +/- 5.46 mumol/24 h) (p less than 0.01). Diclofenac sodium, a non-steroidal anti-inflammatory agent, was administered 50 mg thrice daily for 1 week to 18 stone formers and 24-hour urinary pyrophosphate excretion was studied before and after drug therapy. The 24-hour urinary excretion of pyrophosphate increased from 54.32 +/- 21.40 to 78.31 +/- 28.03 mumol subsequent to diclofenac sodium therapy (p less than 0.01).
authors.affiliation: Department of Biochemistry, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
authors.forename: S
authors.initials: S
authors.lastname: Sharma
authors.forename: S
authors.initials: S
authors.lastname: Vaidyanathan
authors.forename: S K
authors.initials: SK
authors.lastname: Thind
authors.forename: R
authors.initials: R
authors.lastname: Nath
mesh_terms: D000328:Adult; D004008:Diclofenac / Q000627:therapeutic use*; D011756:Diphosphates / Q000652:urine*; D006801:Humans; D007194:India; D007669:Kidney Calculi / Q000188:drug therapy* / Q000652:urine*; D008875:Middle Aged; D013997:Time Factors
chemical_list: D011756:Diphosphates; D004008:Diclofenac