Article
Urology & Nephrology
Megan Prochaska, John Asplin, Arlene Chapman, Elaine Worcester
Summary: The study found that men had higher calcium oxalate supersaturation in urine before RYGB, while women had higher urine calcium oxalate supersaturation and calcium phosphate supersaturation, as well as lower urine volumes after RYGB.
AMERICAN JOURNAL OF NEPHROLOGY
(2021)
Article
Urology & Nephrology
Stanislav Yuzhakov, Shavano D. Steadman, Brandon J. Otto, Vincent G. Bird, Benjamin K. Canales
Summary: The study demonstrates a correlation between 24-hour urine calcium oxalate supersaturation (CaOx SS) and in vivo stone growth in individuals with pure CaOx stones. Higher CaOx SS levels were associated with increased stone growth rates, indicating potential for noninvasive study of stone growth modulators and improved stone risk prediction through CT volumetric analysis.
JOURNAL OF UROLOGY
(2021)
Article
Transplantation
Pietro Manuel Ferraro, Fernando Lopez, Michele Petrarulo, Silvia Barbarini, Gary C. Curhan, Martino Marangella, Eric N. Taylor
Summary: One limitation of using 24-hour collection in patients with kidney stones is impracticality. This study analyzed the performance of spot urine measurements to estimate 24-hour excretion in these patients. The results showed that spot urine samples have limited utility in clinical practice, and future studies should focus on measuring or estimating 24-hour creatinine excretion.
NEPHROLOGY DIALYSIS TRANSPLANTATION
(2022)
Article
Chemistry, Multidisciplinary
Zizhi Li, Linna Chang, Xiuli Ren, Yanan Hu, Zhenhua Chen
Summary: The study found that tea polyphenol can modulate the crystallization process in rat kidneys, reducing the size of crystals and minimizing damage to cells. Additionally, tea polyphenol significantly improves oxidative stress in cases of kidney stones.
Article
Plant Sciences
Fahimeh Haghighatdoost, Reyhaneh Sadeghian, Behnood Abbasi
Summary: Higher consumption of tea is associated with an increased risk of calcium oxalate kidney stone, while coffee drinking is not relevant. However, caution should be taken when interpreting the results due to the low consumption of coffee in the population studied.
PLANT FOODS FOR HUMAN NUTRITION
(2021)
Article
Nutrition & Dietetics
Roswitha Siener, Albrecht Hesse
Summary: The study investigated the effect of black tea consumption on urinary risk factors for kidney stone formation, and found that in normal subjects, black tea intake did not significantly increase the risk of kidney stone formation. Additionally, black tea consumption did not significantly alter 24-h urinary oxalate excretion, but led to a significant increase in urinary citrate, an important inhibitor of calcium stone formation.
Article
Biochemistry & Molecular Biology
Silvia Berto, Martino Marangella, Concetta De Stefano, Demetrio Milea, Pier Giuseppe Daniele
Summary: New complexes such as [Cacit](4-) and [Ca2H2(PO4)(2)] significantly lower beta values in patients with nephrolithiasis. Investigation of the Ca-phosphate-citrate aqueous system through potentiometric titrations revealed that the [Ca(PO4)cit](4-) species is only noticeable at pH > 8.5.
Article
Biotechnology & Applied Microbiology
Feng Chen, Xuan Bao, Shiyu Liu, Kun Ye, Shasha Xiang, Liting Yu, Qingkang Xu, Yuehong Zhang, Xiu Wang, Xuan Zhu, Jian Ying, Yubiao Shen, Wei Ji, Shufeng Si
Summary: This study identified 5 genera of gut microbiota as potential biomarkers for calcium oxalate renal calculi, with Phascolarctobacterium and Faecalibacterium showing a positive relationship with short-chain fatty acid synthesis to reduce the risk of kidney stones. Additionally, Lactobacillus spp. were found to have the largest contribution to preventing kidney stones caused by tea consumption.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Linda Pastero, Alessandra Marengo, Renato Boero, Alessandro Pavese
Summary: The article introduces a new method for capturing carbon dioxide using a calcium ascorbate (vitamin C) solution, with calcium oxalate as the main reaction product. The authors successfully improved the method's performance through experimental setups and parameter optimization.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Urology & Nephrology
Stavros A. Kavouras, Hyun-Gyu Suh, Marion Vallet, Michel Daudon, Andy Mauromoustakos, Mariacristina Vecchio, Ivan Tack
Summary: The study found that 24-hour urine osmolality is positively associated with the risk of calcium-oxalate stone formation, serving as an indicator for preventing urine crystallization and stone formation. Additionally, urine volume is negatively correlated with osmolality, while osmolality is positively correlated with CRI and urea excretion.
Article
Veterinary Sciences
Lucy Kopecny, Carrie A. Palm, Gilad Segev, Jennifer A. Larsen, Jodi L. Westropp
Summary: The proportion of calcium oxalate-containing uroliths in cats has decreased over the years, while the proportion of struvite-containing uroliths has increased. Different types of uroliths have significantly different proportions in the upper urinary tract, and the predispositions based on sex and age are similar to previous reports.
JOURNAL OF VETERINARY INTERNAL MEDICINE
(2021)
Article
Veterinary Sciences
Lucy Kopecny, Carrie A. Palm, Gilad Segev, Jodi L. Westropp
Summary: The study found that calcium oxalate and struvite are the most common urolith compositions in dogs, with a decrease in the proportion of calcium oxalate and an increase in cystine-containing uroliths. Age, breed, and sex were identified as predispositions for urolithiasis, similar to previous studies.
JOURNAL OF VETERINARY INTERNAL MEDICINE
(2021)
Article
Medicine, General & Internal
Daocheng Fang, Yuanyuan Hu, Chao Wang, Chunhua Tang
Summary: This study aimed to investigate the diagnostic value of urinary Tamm-Horsfall protein (THP) and 24h urine osmolality for recurrent calcium oxalate stones. The results showed that the levels of urinary THP, 24h urine osmolality, and biochemical indices were significantly higher in the recurrence group compared to the non-recurrence and control groups. The combined detection of urinary THP and 24h urine osmolality can accurately diagnose stone recurrence.
Article
Endocrinology & Metabolism
L. M. Smith, J. C. Gallagher
Summary: A study of 959 black and white women showed differences in the normal range of 24-h urine calcium excretion, leading to recommendations for updating the normal ranges used in clinical laboratories. The study aimed to define normal ranges for 24-h urine calcium for different age groups and races, and to investigate the relationship between urine calcium, calcium absorption, and vitamin D metabolites.
OSTEOPOROSIS INTERNATIONAL
(2021)
Article
Veterinary Sciences
Reshma M. Anthony, Stephen Davidson, Jennifer M. MacLeay, John Brejda, Peter Werness, Dennis E. Jewell
Summary: Relative supersaturation (RSS) values for urine crystals are an important measure for the risk of urinary stone formation. This study evaluates a new program with known coefficients to calculate RSS and compares it to an older program. The results show that the new program can calculate RSS values for different urine crystals and provides a shared method for understanding the risk of stone formation.
FRONTIERS IN VETERINARY SCIENCE
(2023)