Objective: Ceftriaxone is a third-generation cephalosporin which is widely used for treatment of infection in children accompanied by complications like urinary tract lithiasis and gallbladder psudolithiasis or sludge. The aim of this study was to investigate the incidence and predisposing factors that contribute to these complications in children.Methods: This quasi-experimental and before- and after-study was conducted in 96 children who were hospitalized for treatment of different bacterial infections and received 50-100 mg/kg/day ceftriaxone divided into two equal doses intravenously under conditions of adequate hydration. Sonographic examinations of urinary tract and gallbladder were carried out before and after treatment for that purpose. Patients with positive sonographic findings after treatment were followed with serial sonographic examinations.Findings: Post-treatment sonography demonstrated nephrolithiasis in 6 (6.3%) and gallbladder stone in one (1%), all were asymptomatic. Comparison of the groups with and without nephrolithiasis demonstrated no significant differences with respect to age, body weight, diagnosis, season of hospitalization, dosage of drug and the duration of treatment. Nephrolithiasis had a significant relation with male gender (P=0.02).Conclusion: Our results showed that pediatric patients may develop small sized, asymptomatic renal stones during a 2-6 day course of normal or moderate dose of ceftriaxone therapy. Close monitoring of ceftriaxone treated patients especially on high dose long term therapy for nephrolithiasis and gallbladder psudolithiasis or sludge is recommended.

introduction: As the population grows older and more obese, hypertension eventually develops in more people during their life span. The prevalence of kidney stone disease is estimated at 1% to 15%, varying in degree according to age, gender, race, and geographic location. The objective of this study was to determine the frequency of nephrolithiasis in hypertensive patients.materials and methods: Using simple non probability sampling, a total of 200 patients who referred to Aria and Bahman 22nd Hospitals entered this study. The exclusion criteria were determined as: those subjects that had used carbonic anhydrase or thiazide; those who had a history of surgery on their urinary system; those who had been diagnosed with HTN before affected by nephrolithiasis. The main group was divided into 2 groups: Group 1 who had normal blood pressure (control group) and group 2, hypertensive patients (case group). All the patients were examined using both ultrasound and supine abdominal X ray (KUB) for stone scanning. Then, statistical analyses were conducted using t-test, chi-square test and Fisher’s Exact Test. All the subjects signed a testimonial before the test.results: The comparison of sex and age distribution between the case and the control groups showed no significant differences. Also, the results of Ultra sonograms showed echogenic density of the urinary system prevailing in 4.2% of the patients in the control group and in 25% of those in the hypertensive (case) group (P<0.05). Moreover, KUB revealed significantly lower frequency of stone density in kidneys in the control group (4.2%), as compared to the hypertensive group (21%). As a whole, nephrolithiasis was observed in 4% of the patients in the control group and 21% in those subjects in the hypertensive group. Such a difference between the two groups was statistically significant (P<0.001).conclusion: We believe that urinary stone is significantly more frequent in hypertensive subjects than normal subjects.

It is currently believed that melamine ingestion can lead to insoluble crystals in an animal's urinary system with subsequent physical obstruction or bladder carcinoma. However, whether melamine can cause injury of other tissues and organs in humans is yet unknown. In this study, we encountered 3 affected children with liver lesions, 2 males and 1 female, and detailed their clinical characterizations. Their ages were respectively 2, 6, and 10 months. Among the 3 patients with liver lesions, only 1 exhibited symptoms of gradual progressive jaundice, abdominal distention, hepatic intumesce, and bilirubin abnormality; the other 2 were asymptomatic. The mechanism associated with liver lesion may, at least in part, be due to physical deposition and blockage of the biliary tract system. Disturbance of the acid-base equilibrium may be another reason that accelerates stone formation in human tissues.

Nephrolithiasis is a common disease entity around the world, with an increasing prevalence and incidence. There is no consolidated information available on the cause of kidney stones in Iranian patients. As a result, we decided to review the etiology of kidney stones in Iran. PubMed, Scopus, Web of Science, Google scholar, and Scientific Information Database (SID) were searched with the following keywords “, Nephrolithiasis”, , “, Renal stone”, , “, Kidney stone”, , “, Urolithiasis”, , “, Etiology”, , “, Metabolic abnormalities”, , and “, Iran”, . There was no time period limit for selection of the papers. The inclusion criteria included any paper on evaluation of urine biochemistry regarding stone formation in Iranian adult patients (with or without children) with nephrolithiasis. We found 217 articles, of which 9 were eventually included. In conclusion, 1896 patients with nephrolithiasis from 6 provinces and 7 cities of Iran with different climates from 2000 to 2019 were evaluated collectively. The results showed that in contrast to western countries, hypercalciuria was not the most common biochemical disorder of patients with nephrolithiasis (18. 2% vs. 30 to 60%). Low urine volume (49. 6%) and hypocitraturia (27%) were the most frequent urine abnormalities in our country.

The gut microbiota (GM) is currently considered as a pathogenic factor in a number of diseases. It is known that some gastrointestinal diseases cause a high risk of developing urolithiasis. The study gives modern data demonstrating the influence of the GM, in particular Oxalobacter formigenes, on the formation of oxalate kidney stones. The relationship between the presence of inflammatory bowel diseases and the use of antimicrobial drugs with oxalate homeostasis was demonstrated, methods for correcting the GM in patients with urolithiasis, including the use of probiotics and diet therapy, were analyzed. The studies presented in the article demonstrate that the correction of the GM can be considered as a therapeutic goal and be an actual component of the complex treatment and metaphylaxis of nephrolithiasis.