Renal lithiasis is a multifactorial disease. An important number of etiologic factors can be adequately modified through diet, since it must be considered that the urine composition is directly related to diet. In fact, the change of inappropriate habitual diet patterns should be the main measure to prevent kidney stones. In this paper, the relation between different dietary factors (liquid int...

OBJECTIVE To study the chemical composition of upper renal tract (renal and ureteric) calculi in Multan. SETTING Department of Urology, Nishtar Hospital, Multan. STUDY PERIOD September 1992 to February 1999. MATERIAL AND METHODS A total of 700 renal and ureteric calculi were analyzed by chemical method of Hodgkinson. RESULTS The commonest were uric acid (28.1%) calculi, followed in freq...

The aim of this study was to establish the relative effects of dietary calcium and oxalate (in the form of oxalic acid) on the composition of urine produced by healthy adult Cairn Terriers and Miniature Schnauzers. A nutritionally complete dry dog food was fed to 7 dogs (4 Cairn terriers and 3 Miniature schnauzers) for 24 weeks. The dogs were fed the diet alone, or supplemented with six differe...

1. Dietary calcium restriction, an efficient practice in reducing urinary calcium excretion, has been reported to induce either an increase or no change in oxalate excretion, questioning its use in hypercalciuric stone-forming patients. In addition, calcium restriction has been previously demonstrated to induce other urinary changes which might influence the relative supersaturation of calcium ...

Abstract THIS paper describes laboratory studies that investigated the solubility product of calcium oxalate in the presence of water and sucrose at different temperatures, pH, and sucrose concentrations. The products obtained from these precipitation studies were examined by X-ray powder diffraction and scanning electron microscopy. A correlation was derived which states that the solubility pr...

1. Seventeen healthy controls and 63 patients with idiopathic calcium stone disease of the urinary tract were investigated for urinary calcium and oxalate excretion and for [14C]oxalate intestinal absorption. 2. Under comparable controlled dietary intake a significant increase in calcium excretion as found in patients with stone disease. Oxalate excretion and [14C]oxalate intestinal absorption ...

background & aim: this study evaluated prevention effect of hydro-alcoholic extract of punica granatum peel ethylene glycol-induced nephrolithiasis in wistar rats. experimental: 20 male wistar rats were randomly divided into 4 equal groups. group i animals served as normal control (a) and received distilled water for 28 days. group ii to iv animals received 1% v/v ethylene glycol (eg) in d...

Calcium oxalate is the most common constituent of kidney stones. Increases in urinary oxalate increase risk of calcium oxalate supersaturation more than increases in urinary calcium, as the physiological level of oxalate is about one-fifth to one-tenth that of urinary calcium. Urinary oxalate derives from two sources: endogenous synthesis and diet. Endogenous synthesis is proportional to lean b...

1. The aim of this study was to determine whether seed crystals of uric acid or monosodium urate promote the epitaxial deposition of calcium oxalate in undiluted human urine. The effects of seed crystals of uric acid, monosodium urate or calcium oxalate on calcium oxalate crystallization induced in pooled 24-h urine samples collected from six healthy men were determined by [14C]oxalate depositi...

Escherichia coli is commonly isolated from the urine of kidney stone patients and has been observed to be embedded within the nidus of calcium oxalate kidney stones. A possible association between urinary tract infections and calcium oxalate crystallogenesis was investigated using an agarose plate assay. Calcium oxalate crystallization was observed to be directly proportional to the density of ...