scholarly journals MP18-09 COMPARISON OF INTRAOPERATIVE TO LAB-BASED STONE COMPOSITION ANALYSIS AND IMPACT ON MEDICAL MANAGEMENT

2021 ◽  
Vol 206 (Supplement 3) ◽  
Author(s):  
Nilang Shah ◽  
Sriniwasan Mani ◽  
Noah Canvasser
Keyword(s):  
Medical Management ◽  
Composition Analysis ◽  
Stone Composition

scholarly journals Urinary stone composition analysis and clinical characterization of 1520 patients in central China

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Daling Zhang ◽  
Songchao Li ◽  
Zhengguo Zhang ◽  
Ningyang Li ◽  
Xiang Yuan ◽  
...  
Keyword(s):  
Calcium Oxalate ◽  
Urinary Stone ◽  
Geographic Region ◽  
Central China ◽  
Urinary Stones ◽  
Composition Analysis ◽  
Stone Composition ◽  
Calcium Oxalate Stones ◽  
Significant Difference ◽  
Lower Urinary

AbstractA total of 1520 patients with urinary stones from central China were collected and analysed by Fourier transform infrared spectroscopy between October 1, 2016 and December 31, 2019. For all patients, age, sex, comorbidities, stone location, laboratory examination and geographic region were collected. The most common stone component was calcium oxalate (77.5%), followed by calcium phosphate (8.7%), infection stone (7.6%), uric acid (UA) stone (5.3%)and cystine (0.9%). The males had more calcium oxalate stones (p < 0.001), while infection stone and cystine stones occurred more frequently in females (p < 0.001). The prevalence peak occurred at 41–60 years in both men and women. UA stones occurred frequently in patients with lower urinary pH (p < 0.001), while neutral urine or alkaline urine (p < 0.001) and urinary infection (p < 0.001) were more likely to be associated with infection stone stones. Patients with high levels of serum creatinine were more likely to develop UA stones (p < 0.001). The proportion of UA stones in diabetics was higher (p < 0.001), and the incidence of hypertension was higher in patients with UA stones (p < 0.001). Compared to the other types, more calcium oxalate stones were detected in the kidneys and ureters (p < 0.001), whereas struvite stones were more frequently observed in the lower urinary tract (p = 0.001). There was no significant difference in stone composition across the Qinling-Huaihe line in central China except UA stones, which were more frequently observed in patients south of the line (p < 0.001).

scholarly journals URINARY STONE COMPOSITION ANALYSIS IN INDONESIAN POPULATION: A SINGLE MAJOR CENTRE ANALYSIS

2018 ◽  
Vol 25 (2) ◽  
Author(s):  
Her Bayu Widyasmara ◽  
Ponco Birowo ◽  
Nur Rasyid
Keyword(s):  
Calcium Oxalate ◽  
Urinary Stone ◽  
Stone Disease ◽  
Composition Analysis ◽  
Stone Composition ◽  
Female Ratio ◽  
Urinary Stone Disease ◽  
Indonesian Population ◽  
Male Female Ratio ◽  
Stone Type

Objective: To evaluate the urinary stone composition of Indonesian population. Material & Methods: This is a retrospective study analyzing total 277 urinary stone, obtained from urinary stone patient that underwent treatment in Cipto Mangunkusumo Hospital Jakarta in period 2000-2013. Results: Urinary stone disease is more common in male, with male : female ratio 1.8 : 1, with both in male and female patient, the incidence are highest at 51-60 years old. Calcium containing stone is predominant in this study with calcium oxalate as the most frequent stone with 61% overall, 43.7% in male and 17.3% in female and founded most frequent in 51-60 years old. Uric acid become the second most common stone after calcium containing stone with 9.0% overall, 6.5% in male and 2.5% in female. Infection associated stone such as struvite is 5.8% and Amonium urate 0.7%. In our study, struvite is founded more in male 3.6% than in female 2.2%. Cystine is a rare stone which is only founded 0.7%, in young age at 21-30 years old. Conclusion: Calcium oxalate is the most frequently stone type in our country as it is worldwide. This study revealed  information of stone composition in Indonesian population, that could be beneficial for strategies and management to prevent urinary stone disease and recurrence.  

P0169DYSFUNCTION OF ABCG2, URATE TRANSPORTER, IS RELATED WITH UROLITHIASIS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Yuki Ohashi ◽  
Satoshi Yamaguchi ◽  
Hirotaka Matsuo ◽  
Makoto Hosoyamada ◽  
Kimiyoshi Ichida
Keyword(s):  
Uric Acid ◽  
Risk Factor ◽  
Functional Group ◽  
Developed Countries ◽  
High Ratio ◽  
Composition Analysis ◽  
Healthy Individuals ◽  
Uric Acid Stone ◽  
Stone Composition ◽  
Urate Transporter

Abstract Background and Aims Urolithiasis is one of the rapidly increasing diseases in developed countries. It has been reported that urolithiasis is related with lifestyles, diet, obesity, climate and chronic diseases including hyperuricemia, diabetes mellitus, metabolic syndrome, chronic kidney disease et cetera. Among them, hyperuricemia is the leading cause of urolithiasis. ATP–binding cassette subfamily G member 2 (ABCG2), urate transporter, excretes uric acid in the kidney and the intestinal tract and ABCG2 dysfunction increases a risk of hyperuricemia. In this study, we investigated the estimated ABCG2 function by common two dysfunctional variants, Q126X (rs72552713) and Q141K (rs2231142), in patients with urolithiasis, and we evaluated the relation between urolithiasis and ABCG2 dysfunction. Method One hundred and ninety-seven urolithiasis patients without gout (150 males and 47 females) were enrolled. Q126X totally abolishes ABCG2 function, while Q141K reduces its function by about 50%. Since these two SNPs do not link each other and two SNPs do not exist on same chromosome, these two are regarded as independent risks. Namely, based on the genotype of Q126X and Q141K, it can be divided into three categories: a full functional group, a 75% functional group and a ≦50% functional group. Serum uric acid levels and amount of urinary uric acid were measured. Renal uric acid handling of the patients was classified into renal uric acid underexcretion type or renal uric acid overload type based on uric acid clearance and amount of urinary uric acid. Stone composition was analysed, if it had been possible. Results ABCG2 function of the patients was evaluated as follows: 82 patients, ABCG2 full function (41.6%); 78 patients, 75% function (39.6%); 37 patients, ≦50% function (18.8%). 155 patients were classified into renal uric acid underexcretion type, 13 patients were classified into renal uric acid overload type and 2 patients were classified into normal type (27 patients have not had 24-hour urine biochemical test). Stone composition analysis was performed for 136 patients; calcium oxalate stone was identified in 107 patients and uric acid stone in 29 patients. In this study, 58.4 % of the patients with urolithiasis had some ABCG2 dysfunction as against 49.8 % of the healthy individuals previously reported (p=0.0246). In addition, the ratio of subjects with urolithiasis having 50% or less of ABCG2 function was higher than healthy individuals significantly (OR=1.773, p=0.007). The high ratio of ABCG2 dysfunctional patients with urolithiasis suggested that ABCG2 dysfunction is a risk factor for urolithiasis. In the patients with urolithiasis, renal uric acid underexcretion type accounted for about 90% of the patients. This means that this type accelerated urolithiasis as well as hyperuricosuria. Conclusion ABCG2 dysfunction and renal uric acid underexcretion type were suggested to be a risk factor for urolithiasis.

E158 Urinary stone composition analysis – five-year experience of a major Portuguese urological center

2013 ◽  
Vol 12 (3) ◽  
pp. 83
Author(s):  
A. Nunes ◽  
S. Pereira ◽  
A. Sandul ◽  
R. Garcia ◽  
R. Ramos ◽  
...  
Keyword(s):  
Urinary Stone ◽  
Composition Analysis ◽  
Stone Composition

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.

Urinary stone composition analysis by coherent scatter: Is a monoenergetic source necessary?

2004 ◽  
Author(s):  
Melanie T. M. Davidson ◽  
Deidre L. Batchelar ◽  
Sujeevan Velupillai ◽  
Ian A. Cunningham
Keyword(s):  
Urinary Stone ◽  
Composition Analysis ◽  
Stone Composition ◽  
Coherent Scatter

scholarly journals Urinary stone composition analysis of 3684 patients in the eastern Shandong region of China

2019 ◽  
Vol 48 (3) ◽  
pp. 030006051988726
Author(s):  
Xuebao Zhang ◽  
Jiajia Ma ◽  
Ning Wang ◽  
Chunhua Lin
Keyword(s):  
Uric Acid ◽  
Calcium Oxalate ◽  
Urinary Calculi ◽  
High Rate ◽  
Urinary Stones ◽  
Composition Analysis ◽  
Carbonate Apatite ◽  
Stone Composition ◽  
Calcium Oxalate Dihydrate ◽  
Uric Acid Stones

Objective There has not been a study that analyzed the composition of urinary stones from patients in the eastern Shandong region of China. Thus, we explored the composition of urinary stones in the eastern Shandong region of China and discuss the clinical significance of the findings. Methods A total of 3684 urinary calculi from the eastern Shandong region were collected in our study. Compositions of the stones were analyzed using an Automatic Infrared Spectrum Analysis System (type LIIR-20). The results were verified through manual analysis of the spectrograms, which was accompanied by polarizing microscopy and chemical analysis if necessary. Results Among the 3684 specimens, there were 1767 single-component stones and 1917 mixed-component stones. According to the main components of the stones, the stones were divided into the following types: calcium oxalate monohydrate stones (1779, 48.3%), anhydrous uric acid stones (1105, 30.0%), carbonate apatite stones (590, 16.0%), ammonium magnesium phosphate hexahydrate stones (143, 3.9%), calcium oxalate dihydrate stones (36, 1.0%), and cystine stones (31, 0.8%). Conclusions There was a relatively high rate of uric acid stones in patients from the eastern Shandong region of China.

scholarly journals Nephrolithiasis and Polycystic Ovary Syndrome: A Case-Control Study Evaluating Testosterone and Urinary Stone Metabolic Panels

2019 ◽  
Vol 2019 ◽  
pp. 1-7
Author(s):  
Donald Fedrigon ◽  
Kareem Alazem ◽  
Sri Sivalingam ◽  
Manoj Monga ◽  
Juan Calle
Keyword(s):  
Polycystic Ovary Syndrome ◽  
Sodium Excretion ◽  
Polycystic Ovary ◽  
Stone Formation ◽  
Free Testosterone ◽  
Case Control ◽  
Composition Analysis ◽  
Ovary Syndrome ◽  
Stone Composition ◽  
Stone Formers

Introduction. Both elevated testosterone and polycystic ovary syndrome (PCOS) have been speculated as possible risk factors for kidney stone formation; however, the details of this potential relationship with regards to 24-hour urine metabolic panels and stone composition have not previously been characterized. Methods. A total of 74 PCOS patients were retrospectively identified and matched with a cohort of female stone formers at a 3 : 1 ratio (by age and BMI). All patients had 24-hour urinary metabolic panels and stone compositions. These groups were compared using Pearson chi-square and Student t-tests. Additionally, the PCOS group was differentiated based on free testosterone using multivariate analysis. Results. The case-control cohort showed that PCOS patients had significantly lower sodium excretion p=0.015 and hypernatriuria rates (28.9% vs 50.9%, p=0.009). The PCOS-testosterone cohort demonstrated that high testosterone patients had significantly higher citrate values p=0.041 and significantly lower odds of hypocitraturia (36.7% vs 54.2%, OR = 0.2, p=0.042). The high testosterone group also had higher sodium excretion p=0.058 with significantly higher odds of having hypernatriuria (40.0% vs 13.6%, OR = 13.3, p=0.021). No significant patterns were revealed based on stone composition analysis. Conclusions. Compared to healthy stone formers, PCOS patients did not demonstrate significant differences in 24-hour urine and stone composition values. Elevated free testosterone in PCOS patients has a significant association with higher urinary citrate and sodium values: findings that in and of themselves do not confirm the hypothesized increased risk of stone formation. This patient cohort may provide deeper insight into the interplay between androgens and stone formation; however, further study is needed to fully characterize the possible relationship between PCOS and stone formation.

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