Clinical and Biochemical Differences in Patients with Pure Calcium Oxalate Monohydrate and Calcium Oxalate Dihydrate Kidney Stones

1994 ◽  
Vol 151 (3) ◽  
pp. 571-574 ◽  
Author(s):  
A.E. Pierratos ◽  
H. Khalaff ◽  
P.T. Cheng ◽  
K. Psihramis ◽  
M.A.S. Jewett
Keyword(s):  
Calcium Oxalate ◽  
Kidney Stones ◽  
Calcium Oxalate Monohydrate ◽  
Calcium Oxalate Dihydrate ◽  
Oxalate Dihydrate

Role of Magnesium in the Growth of Calcium Oxalate Monohydrate and Calcium Oxalate Dihydrate Crystals

1987 ◽  
Vol 42 (2) ◽  
pp. 89-93 ◽  
Author(s):  
Toshitsugu Oka ◽  
Toshiaki Yoshioka ◽  
Takuo Koide ◽  
Minato Takaha ◽  
Takao Sonoda
Keyword(s):  
Calcium Oxalate ◽  
Calcium Oxalate Monohydrate ◽  
Calcium Oxalate Dihydrate ◽  
Oxalate Dihydrate

Calcium Oxalate Dihydrate-Monohydrate Association in Grape (Vitis Vinifera) Endosperm

1982 ◽  
Vol 40 ◽  
pp. 154-155
Author(s):  
Mary Alice Webb ◽  
Howard J. Arnott
Keyword(s):  
Vitis Vinifera ◽  
Calcium Oxalate ◽  
Plant Species ◽  
Calcium Oxalate Monohydrate ◽  
Optical Methods ◽  
Calcium Oxalate Dihydrate ◽  
Characteristic Morphology ◽  
Oxalate Dihydrate

Calcium oxalate occurs in two forms, monohydrate (whewellite) and dihydrate (weddelite). Both forms occur intracellularly in plants, typically within vacuoles. In particular plant species a given tissue usually has crystals with specific and characteristic morphology. The occurrence of calcium oxalate monohydrate and dihydrate together in the same cell is thought to be extremely rare and has been reported only in Allium and Begonia. In vitro the dihydrate is unstable under certain conditions and may dissolve and reprecipitate as the monohydrate. In this paper we report observations of crystals isolated from grape (Vitis vinifera) endosperm. Using optical methods both calcium oxalate monohydrate and dihydrate, as well as dihydratemonohydrate associations, have been identified.

scholarly journals Chemical and morphological analysis of kidney stones: a double-blind comparative study

2010 ◽  
Vol 25 (5) ◽  
pp. 444-448 ◽  
Author(s):  
Silvia Fernandes Ribeiro da Silva ◽  
Djamile Cordeiro de Matos ◽  
Sônia Leite da Silva ◽  
Elizabeth De Francesco Daher ◽  
Henry de Holanda Campos ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Calcium Oxalate ◽  
Kidney Stones ◽  
Morphological Analysis ◽  
Calcium Oxalate Monohydrate ◽  
Composition Analysis ◽  
Minor Components ◽  
Double Blind ◽  
Stone Composition ◽  
Calcium Oxalate Dihydrate

PURPOSE: To compare chemical to morphological kidney stone composition analysis based on a sample of 50 stones retrieved from patients at a nephrology service. METHODS: The chemical analysis was performed with a Bioclin® kit, while a 10-mm magnifying glass (10x; Prolabo, Paris, France) was employed in the morphological analysis. Findings obtained with the two methods were compared and classified as concordant (100% agreement), partly concordant (concordant for major components, discordant for minor components) or discordant (discordant for major components). RESULTS: In the chemical analysis, the most commonly observed major component was calcium (70%), followed by oxalate (66%), ammonium (56%), urate (28%) and carbonate (24%). In the morphological analysis, the most commonly observed major components were calcium phosphate and magnesium (32% each), followed by calcium oxalate monohydrate (24%), uric acid and urates (20% each), calcium oxalate dihydrate (18%) and cystine (6%). Infectious kidney stones were identified in 34% and 24% of cases by morphological and chemical analysis, respectively. Thirty-eight percent of the samples were classified as concordant, 52% were partly concordant and 10% were discordant. CONCLUSION: We suggest kidney stones be routinely submitted to both types of analysis for a better understanding of the mechanisms involved in lithogenesis.

scholarly journals Identification of Calcium Oxalate Monohydrate Crystals by X-ray Diffraction in Urine of Ethylene Glycol-Intoxicated Dogs

1985 ◽  
Vol 22 (6) ◽  
pp. 625-628 ◽  
Author(s):  
M. A. Thrall ◽  
S. M. Dial ◽  
D. R. Winder
Keyword(s):  
Ethylene Glycol ◽  
Light Microscopy ◽  
Calcium Oxalate ◽  
Calcium Oxalate Monohydrate ◽  
X Ray Diffraction ◽  
Calcium Oxalate Dihydrate ◽  
X Ray ◽  
Oxalate Dihydrate ◽  
Ethylene Glycol Poisoning ◽  
Experimentally Induced

Urine sediments of dogs with experimentally induced ethylene glycol poisoning were examined by light microscopy and X-ray diffraction. Massive calcium oxalate crystalluria was observed in all poisoned dogs. By light microscopy, the frequency with which six-sided hippurate-like prisms and envelope forms of calcium oxalate dihydrate occurred was approximately equal. The hippurate-like crystals were shown to be calcium oxalate monohydrate by X-ray diffractometry.

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