Epidemiology and socioeconomic aspects of urolithiasis

Asper, R.

doi:10.1007/bf00256301

Cited by 89 publications

(44 citation statements)

References 12 publications

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“…Another study (Kriang and Pote, 1992) found that the proportion of the lower urinary stones was 3%, and our survey included 16% of these cases in our total cases. Since several studies (Asper et al, 1984;Kodama and Ohno, 1989;Sriboonlue et al, 1992) have reported that the socioeconomical development increases the prevalence of upper urinary stone cases, the high proportion of lower urinary tract stone cases in our study may be a reflection of the differences of socioeconomical levels of the two countries (Florentino and Pedro,1992). There was, however, no statistically significant difference between urban and rural area dwellers with respect to the proportion of upper and lower urinary stone cases in our survey.…”

Section: Methodsmentioning

confidence: 65%

Risk factor of urolithiasis in Laos

Matsuba

Chiba

Akkhavong

et al. 2005

Jpn. J. Health Hum. Ecol

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Tsuyoshi MATSUBA1, Momoko CHIBA1, Khongsap Akkhavong2, Aporn Sisuraj2 and Yutaka INABA1A case control study on urolithiasis was conducted in Laos, where the disease was endemic in order to clarify the relationship between diet patterns and life style related factors and the disease. As subjects of the study, 114 cases and 97 hospital based unmatched comparative subjects participated. By using a questionnaire, the diet patterns and life style related factors were asked and odds ratios were calculated for each of the factors. Factor analysis was performed to ascertain how the factors of food items were assembled by the composing factors, and covariance structure analysis (structure equation model) was adopted to clarify the relationship between those factors and the disease. Then the urolithiasis cases were divided into two groups, determined by the presence of upper and lower urinary tact stones because etiological differences were detected. Lower urinary tract stones revealed a positive relationship with traditional food items and a negative one with modern food items. In contrast, upper urinary tract stones showed a higher path coefficient to modern food items than to traditional ones in the structure equation model. It is suggested that in Laos the modernization of the diet pattern may elevate the incidence of upper urinary tract stones, though it decreases lower urinary tract stones.

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Section: Methodsmentioning

confidence: 65%

Risk factor of urolithiasis in Laos

Matsuba

Chiba

Akkhavong

et al. 2005

Jpn. J. Health Hum. Ecol

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“…According to previous reports, not only calcium and oxalate excretion but excretion of inorganic phosphate is also important in the formation of urinary stone. [27] In the present study, oxalate, calcium and phosphate excretion observed in glycolic acid-treated rats is likely to have formed calcium phosphate crystals. Conversely, EHV declines the levels of oxalate, calcium as well as phosphate execretion which is known to prove valuable in preventing calculi formation due to supersaturation of these urolithiagenic substances.…”

Section: Resultsmentioning

confidence: 81%

Effect of Hordeum vulgare Linn. Seeds on glycolic acid induced urolithiasis in rats

Jignesh¹,

Bharat²,

Sandip³

et al. 2012

Phcog Commn

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“…The most common component of urinary calculi in industrialized countries is CaOx, which represents 75-90% of urinary calculi (26), but the etiology of CaOx calculus formation has remained poorly understood until recently. In the present study, CaOx was detected in 25 stones as the main component (62.5%).…”

Section: Discussionmentioning

confidence: 99%

Compositional analysis of various layers of upper urinary tract stones by infrared spectroscopy

Zhang

Zheng

et al. 2017

Experimental and Therapeutic Medicine

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Abstract. The objective of the present study was to determine the composition of various layers of upper urinary stones and assess the mechanisms of stone nucleation and aggregation. A total of 40 integrated urinary tract stones with a diameter of >0.8 cm were removed from the patients. All of the stones were cut in half perpendicularly to the longitudinal axis. Samples were selected from nuclear, internal and external layers of each stone. Fourier transform infrared spectroscopy (FT-IR) was adopted for qualitative and quantitative analysis of all of the fragments and compositional differences among nuclear, internal and external layers of various types of stone were subsequently investigated. A total of 25 cases of calcium oxalate (CaOx) stones and 10 cases of calcium phosphate (CaP) stones were identified to be mixed stones, while 5 uric acid (UA) calculi were pure stones (purity, >95%). In addition, the contents of CaOx and carbapatite (CA.AP) crystals in various layers of the mixed stones were found to be variable. In CaOx stones, the content of CA.AP in nuclear layers was significantly higher than that of the outer layers (32.0 vs. 6.8%; P<0.05), while the content of CaOx was lower in the inner than in the outer layers (57.6 vs. 86.6%; P<0.05). In CaP stones, the content of CA.AP in the nuclear layers was higher than that in the outer layers (74.0 vs. 47.3%; P<0.05), while the content of CaOx was lower in the inner than in the outer layers (7.0 vs. 40.0%; P<0.05). The UA stones showed no significant differences in their composition among different layers. In conclusion, FT-IR analysis of various layers of human upper urinary tract stones revealed that CaOx and CaP stones showed differences in composition between their core and surface, while all of the UA calculi were pure stones. The composition showed a marked variation among different layers of the stones, indicating that metabolism has an important role in different phases of the evolution of stones. The present study provided novel insight into the pathogenesis of urinary tract stones and may contribute to their prevention and treatment. IntroductionUrolithiasis, a worldwide endemic condition arising from malnutrition, has significantly impacted health-care systems in previous years due to the growing cost of diagnosis and treatment of stone episodes (1-3). Urolithiasis is a common urologic disease with multiple etiologies and risk factors. Studies have suggested an increase in the incidence of urolithiasis in developed nations over recent decades (4,5). The prevalence is 1-5% in Asia, 5-9% in Europe, 13% in North America and 20% in Saudi Arabia, and increasing throughout the world (4). The increase in incidence of urolithiasis was most likely associated with changes in environmental factors, including dietary habits, fluid intake and obesity (6). Historically, urolithiasis has been indicated to be more common among men than women (7). Early epidemiological studies placed the incidence rate of urolithiasis in men at 2.2 to 3.4 times that of women (8). ...

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Epidemiology and socioeconomic aspects of urolithiasis

Cited by 89 publications

References 12 publications

Risk factor of urolithiasis in Laos

Risk factor of urolithiasis in Laos

Effect of Hordeum vulgare Linn. Seeds on glycolic acid induced urolithiasis in rats

Compositional analysis of various layers of upper urinary tract stones by infrared spectroscopy

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