Annual changes of the incidence and clinical characteristics of magnesium ammonium phosphate urinary stones

2003 ◽  
Vol 10 (1) ◽  
pp. 1-5 ◽  
Author(s):  
TAKAHIDE OGATA ◽  
KOICHIRO AKAKURA ◽  
KEN-ICHI MIZOGUCHI ◽  
KAZUO MIKAMI ◽  
KUNIYOSHI NOZUMI ◽  
...  
Keyword(s):  
Clinical Characteristics ◽  
Ammonium Phosphate ◽  
Urinary Stones ◽  
Magnesium Ammonium Phosphate ◽  
Magnesium Ammonium ◽  
Annual Changes

The Influence of Disodium Ethane-1-Hydroxy-1,1-Diphosphonate (Ehdp) on the Development of Experimentally Induced Urinary Stones in Rats

1972 ◽  
Vol 42 (2) ◽  
pp. 197-207 ◽  
Author(s):  
D. Fraser ◽  
R. G. G. Russell ◽  
Ortrun Pohler ◽  
W. G. Robertson ◽  
H. Fleisch
Keyword(s):  
Calcium Oxalate ◽  
Stone Formation ◽  
Ammonium Phosphate ◽  
Urinary Stones ◽  
Hydrogen Phosphate ◽  
Magnesium Ammonium Phosphate ◽  
Magnesium Ammonium ◽  
The Difference ◽  
Calcium Oxalate Calculi

1. Bladder stones composed of calcium hydrogen phosphate dihydrate, calcium oxalate mono- and di-hydrate and magnesium ammonium phosphate hexahydrate (struvite) were successfully induced in rats by various dietary manipulations and by implanting zinc pellets in the bladder. 2. The effect of a diphosphonate, disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP), given in the drinking water at concentrations of 0·0025, 0·05 and 0·5% (w/v), on the size and composition of these stones was examined. 3. All the concentrations of EHDP decreased the weight of the calcium oxalate calculi. In contrast, only the highest concentration of EHDP inhibited calcium hydrogen phosphate stone formation and the magnesium ammonium phosphate stones were unaffected. 4. The difference between the effects on calcium oxalate and magnesium ammonium phosphate stones is consistent with the finding that EHDP inhibited the precipitation of calcium oxalate from solution in vitro but had only a slight effect on magnesium ammonium phosphate precipitation. 5. It is suggested that EHDP might be of use in the prevention of some types of urinary stones in man.

scholarly journals Chemical composition of urinary stones in Rahim Yar Khan and adjacent districts of Sindh and Baluchistan

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Abdul Hakeem ◽  
Muhammad Tariq ◽  
Mehboob Bari ◽  
Muhammad Hassan Abbas ◽  
Muhammad Anwar
Keyword(s):  
Calcium Oxalate ◽  
Urinary Calculi ◽  
Ammonium Phosphate ◽  
Upper Urinary Tract ◽  
Pure Form ◽  
Urinary Stones ◽  
Magnesium Ammonium Phosphate ◽  
Female Ratio ◽  
Magnesium Ammonium ◽  
Urinary Tract Calculi

Aim: To find out the constituents of the urinary stones, so that preventive measures would be taken against recurrence. Patients and methods: A total No. of 200 consecutive patients with upper urinary tract calculi, that were operated in the urology and general surgical wards of Sh. Zayed Hospital Rahim Yar Khan were included in the study. In addition to Rahim Yar Khan the patients also came from adjacent districts of Sindh and Baluchistan. Qualitative Chemical analysis was carried out using Merchognost (Germany) urinary calculi analysis kit. All the tests were performed according to the instruction of manufacturers of the kit. Results: Stone samples were collected from 200 patients, out of these 138 (69%) were male and 62 (31%) of patients were female with male to female ratio 2.2:1 age range was between 9-72 years. Results of stone analysis indicate that calcium oxalate is the most common ingredient found in 100% of the stone samples. In 83% of patients it was found mixed with other varieties of stones while in 17% samples it was seen in pure form. Uric acid was the second most common ingredient seen in 73% of patients mixe d with calcium oxalate and magnesium ammonium phosphate but it was not found as pure form. Magnesium Ammonium phosphate found in 13% of stones samples in mixed form only, not as isolated stone.

scholarly journals A Giant Ureteral Stone without Underlying Anatomic or Metabolic Abnormalities: A Case Report

2013 ◽  
Vol 2013 ◽  
pp. 1-3 ◽  
Author(s):  
Selcuk Sarikaya ◽  
Berkan Resorlu ◽  
Ekrem Ozyuvali ◽  
Omer Faruk Bozkurt ◽  
Ural Oguz ◽  
...  
Keyword(s):  
Ureteral Stone ◽  
Ammonium Phosphate ◽  
Intravenous Urography ◽  
Metabolic Abnormalities ◽  
Magnesium Ammonium Phosphate ◽  
Distal Ureter ◽  
Double J Stent ◽  
Magnesium Ammonium ◽  
Left Flank Pain ◽  
Plain Abdominal Film

A 28-year old man presented with left flank pain and dysuria. Plain abdominal film and computed tomography showed a left giant ureteral stone measuring 11.5 cm causing ureteral obstruction and other stones 2.5 cm in size in the lower pole of ipsilateral kidney and 7 mm in size in distal part of right ureter. A left ureterolithotomy was performed and then a double J stent was inserted into the ureter. The patient was discharged from the hospital 4 days postoperatively with no complications. Stone analysis was consistent with magnesium ammonium phosphate and calcium oxalate. Underlying anatomic or metabolic abnormalities were not detected. One month after surgery, right ureteral stone passed spontaneously, left renal stone moved to distal ureter, and it was removed by ureterolithotomy. Control intravenous urography and cystography demonstrated unobstructed bilateral ureter and the absence of vesicoureteral reflux.

In vitro production of struvite by Bacillus pumilus

1991 ◽  
Vol 37 (12) ◽  
pp. 978-983 ◽  
Author(s):  
Berlin Nelson ◽  
James Struble ◽  
Gregory McCarthy
Keyword(s):  
Bacillus Pumilus ◽  
Potassium Phosphate ◽  
Ammonium Phosphate ◽  
Maximum Size ◽  
In Vitro Production ◽  
Magnesium Ammonium Phosphate ◽  
X Ray ◽  
Magnesium Ammonium ◽  
Vitro Production

A strain of Bacillus pumilus, isolated from the soilborne sclerotia of a fungus, produced crystals of the mineral struvite (magnesium ammonium phosphate hexahydrate) on Difco nutrient agar and a yeast extract agar containing magnesium sulphate and potassium phosphate. Crystals were macroscopically observed after 6–20 days of bacterial growth and reached a maximum size of 3 × 0.5 mm. Crystals were identified by X-ray powder diffractometry. These findings support the hypothesis that bacteria are involved in the biogenic formation of struvite in nature. Key words: struvite, magnesium ammonium phosphate hexahydrate, Bacillus pumilus, biomineral.

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