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  • 1
    Electronic Resource
    Electronic Resource
    Dissolution and growth of calcium oxalate monohydrate I. Effect of magnesium and pH
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/General Subjects 313 (1973), S. 256-267 
    Details
    ISSN: 0304-4165
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0304-4165(73)90025-1
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  • 2
    Electronic Resource
    Electronic Resource
    Crystallisation of calcium oxalate dihydrate in normal urine in presence of sodium copper chlorophyllin (1982)
    Springer
    Urological research 10 (1982), S. 173-176 
    Details
    ISSN: 1434-0879
    Keywords: Inhibitors ; Calcium oxalate dihydrate ; Growth kinetics ; Soluble chlorophyllin ; Calcium stones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A method is described for the growth of calcium oxalate dihydrate in normal urine. Soluble chlorophyllin, at a concentration of 20 μg/ml inhibited the crystallisation and the growth kinetics of the dihydrate crystals. The inhibitory capacity of chlorophyllin was compared with previous results. Data obtained suggest that the food and drug colourant chlorophyllin might be useful in the treatment of calcium oxalate stone disease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00255940
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  • 3
    Electronic Resource
    Electronic Resource
    Calcium oxalate crystal growth in normal urine: Role of contraceptive hormones (1984)
    Springer
    Urological research 12 (1984), S. 7-9 
    Details
    ISSN: 1434-0879
    Keywords: Oral contraceptives ; Calcium oxalate crystals ; Growth inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Oral contraceptives inhibited the growth of calcium oxalate crystals in female urine, and the growth rate inhibition depended on the dose of ethinyl-oestradiol in the oral contraceptive agent. The results suggest that the crystallization kinetics of calcium oxalate in urine could be under the control of oestrogenic hormones by an unidentified mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256302
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  • 4
    Electronic Resource
    Electronic Resource
    Methylene blue as an inhibitor of stone formation (1978)
    Springer
    Urological research 6 (1978), S. 77-81 
    Details
    ISSN: 1434-0879
    Keywords: Calcium oxalate ; Methylene blue ; Growth ; Dissolution ; Inhibition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Kinetics of growth and dissolution of calcium oxalate monohydrate were examined in the presence of small concentrations of methylene blue. The data presented show moderate retardation in growth and dissolution rates. It was also found that methylene blue decreased the decalcification rate of calcium oxalate renal calculi. The implications of these findings in the treatment of urolithiasis are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00255577
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  • 5
    Electronic Resource
    Electronic Resource
    Calcium oxalate crystal formation in the kidneys of rats injected with 4-hydroxy-L-proline (1980)
    Springer
    Urological research 8 (1980), S. 121-127 
    Details
    ISSN: 1434-0879
    Keywords: Experimental nephrolithiasis ; Calcium oxalate ; Growth kinetics ; Phase transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Calcium oxalate crystal formation induced in rat kidneys by intraperitoneal injection of 4-hydroxy-L-proline were studied by chemical, microscopic and size analysis techniques. Crystal growth rates were determined at different intervals of time from the size distribution curves. Calcium oxalate dihydrate (weddelite), formed in the first 2 hour after injection, undergoes gradual phase transformation to the more stable monohydrate (whewellite). This finding emphasizes the significance of crystal transformation in the development of experimental nephrolithiasis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00271440
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  • 6
    Electronic Resource
    Electronic Resource
    In vitro formation of calcite concretions (1974)
    Springer
    Cellular and molecular life sciences 30 (1974), S. 1153-1154 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Résumé Des concrétions de calcite identiques à celles produites par des organismes vivants ont été développées dans un gel de gélatine. La méthode décrite offre une matrice organique adéquate qui permet de contrôler la nucléation, la croissance et l'orientation des cristaux de calcite dans ces structures organisées.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01923661
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  • 7
    Electronic Resource
    Electronic Resource
    Calcite growth under controlled diffusion (1977)
    Springer
    Cellular and molecular life sciences 33 (1977), S. 584-586 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The growth of calcite was studied in a gelatin-gel medium under variable environmental conditions by 2 different methods. The results suggest that the organic matrix, the temperature, the diffusion fluctuation depending on ionic concentrations, and the presence of additives exert a fine control on the evolution of single crystals, polycrystalline aggregates, and highly structured concretions of calcite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01946510
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  • 8
    Electronic Resource
    Electronic Resource
    The effect of pH and urine dilution on the electrophoretic mobility of uric acid crystals (1985)
    Springer
    International urology and nephrology 17 (1985), S. 3-10 
    Details
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract As a result of a continuing programme to understand better the uric acid stone treatment and prophylaxis, an investigation of the effect of pH and urine dilution on the surface charge of uric acid crystals was undertaken. A microelectrophoretic technique was employed to characterize the nature of the surface charge and the electrokinetics of uric acid crystals both in natural and synthetic urines under different conditions of pH and dilution. Both dilution and alkalization reduced the specific conductance of urine and increased the electrophoretic mobility (zeta potential) of uric acid crystals. The presence of cationic additives in diluted urine altered the zeta potential of uric acid crystals. Such findings suggest that proper control of the pH level and urine dilution as well as the surface charge at the solid-liquid interface represent an important factor in the uric acid stone prophylaxis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02089396
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  • 9
    Electronic Resource
    Electronic Resource
    Study of the microstructure of renal stones: Uric acid and calcium oxalate (1982)
    Springer
    International urology and nephrology 14 (1982), S. 201-207 
    Details
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract This paper represents the results of experimental study on the microstructure of uric acid and calcium oxalate crystallites in renal stones. The size distribution parameters and morphological characteristics of the microcrystals forming the stone were determined using SEM and image analysing system. Information on the fabric of the renal stones examined indicates that the mean volume diameter is 15.5 μm for uric acid and 32 μm for calcium oxalate stones. The polydispersity index γ, the shape factor Φ, and the distribution of particle shape show close similarity. Quantitative studies on stone microstructure could furnish valuable information on stone genesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02081805
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  • 10
    Electronic Resource
    Electronic Resource
    S.E.M. study of urease-induced crystalluria in the presence of hydroxamic derivatives (1986)
    Springer
    International urology and nephrology 18 (1986), S. 227-233 
    Details
    ISSN: 1573-2584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of 3 hydroxamic acid derivatives on urease-induced crystalluria was studiedin vitro. Acetohydroxamic acid is more effective than salicylhydroxamic and gentisohydroxamic acids in inhibiting the kinetic of urease enzymatic reaction and in retarding the formation of struvite and apatite. Crystal deposits studied by scanning electron microscope (S.E.M.) and X-ray microanalysis indicated that acetohydroxamic acid favours the formation of large crystals of struvite, and less aggregation is observed. Salicyl and gentiso derivatives favour the formation of brushite together with struvite and apatite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02082708
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