1. During ATP supported active calcium uptake oxalate as well as phosphate are accumulated with calcium. The uptake of calcium exceeds that of both anions by a small quantity--accounting for calcium binding to vesicular proteins and lipids. 2. From assay media containing phosphate and oxalate--nearly exclusively either oxalate or phosphate are taken up together with calcium by the sarcoplasmic ...

We present two cases of pulmonary aspergillosis in which calcium oxalate crystals in the sputum proved to be a useful diagnostic clue. In case 1, Aspergillus hyphae was not identified; however, calcium oxalate crystals were present, and chronic necrotizing pulmonary aspergillosis was diagnosed. In case 2, calcium oxalate was detected and Aspergillus fumigatus was identified later. Thus, the pre...

Objective: Urolithiasis remains a global problem. Despite the availability of numerous methods, no definite therapeutic agent has been yet introduced for the prevention or treatment of kidney stones. In this study, we evaluated the possible preventive effects of aqueous extract of Cichorium intybus L. (chicory) flowers on ethylene glycol-induced renal calculi in rats. Materials and Methods: A t...

Water extract of the leaves of Coleus aromaticus  Benth. Was tested for its antiurolithiatic activity against calcium oxalate stones in male albino rats. Calcium oxalate stones were induced by feeding 3% w/w sodium oxalate along with normal feed. The water extract of coleus aromaticus (0.5 g/kg and 1.0 g/kg, once, orally for 30 days) was found to be effective in reducing deposition of calcium o...

17-45 ABSTRACT The objective of this investigation was to study the formation of calcium oxalate crystals in situ in kikuyu grass (Pennisetum clandestinum) and to determine the effect of calcium uptake on the soluble and insoluble oxalate content of the grass. Oxalate crystals were more abundant in high-calcium leaves than in low-calcium leaves. Electron microscopy showed that the oxalate cryst...

1. The urinary F1 activation peptide of prothrombin is the predominant protein incorporated into calcium oxalate crystals precipitated from human urine. The aim of this study was to examine the effect of pure urinary prothrombin F1 on calcium oxalate crystallization in human urine. 2. Urinary prothrombin F1 was purified from demineralized calcium oxalate crystals precipitated from human urine, ...

Serum oxalate rises in uremia because of decreased renal clearance, and crystals of calcium oxalate occur in the tissues of uremic patients. Crystal formation suggests that either uremic serum is supersaturated with calcium oxalate, or local oxalate production or accumulation causes regional supersaturation. To test the first alternative, we ultrafiltered uremic serum and measured supersaturati...

objective: this study was carried out to investigate the preventive effects of hydroalcoholic extract of cynodon dactylon(c.dactylon) roots on calcium oxalate calculi in rat. materials and methods: 24 wistar rats were randomly divided into 4 groups: group a received tap drinking water while, groups b, c, and d received 1% ethylene glycol daily for 28 days. rats in groups c and d received ethano...

Potassium citrate is prescribed to decrease stone recurrence in patients with calcium nephrolithiasis. Citrate binds intestinal and urine calcium and increases urine pH. Citrate, metabolized to bicarbonate, should decrease calcium excretion by reducing bone resorption and increasing renal calcium reabsorption. However, citrate binding to intestinal calcium may increase absorption and renal excr...

OBJECTIVE To assess the effects of a glycoprotein (mucine) on calcium oxalate crystal development in different conditions and situations, to clarify some of its possible effects. MATERIALS AND METHODS Crystallization was assessed using a batch system in presence of mucine suspensions, by kinetic-turbidimetric measurements, and using a flow system in the presence of retained agglomerates of mu...