Distinguishing Features of Childhood Renal Dysplasia.

Background: Renal dysplasia (RD) is a major cause of chronic kidney disease (CKD) in childhood. Herein, we present a single-center experience about distinctive features of different subtypes of dysplasia.

Methods: All children with RD admitted between January 2018 and June 2019 were included in this cross-sectional study.

Risk factors for recurrence in pediatric urinary stone disease.

Background: Children's urinary system stones may develop from environmental, metabolic, anatomical, and other causes. Our objective is to determine the recurrence and prognosis, demographic, clinical, and etiological characteristics of children with urolithiasis.

Methods: Medical records of patients were evaluated retrospectively.

Antibiotic Prophylaxis in Infants with Grade III, IV, or V Vesicoureteral Reflux.

Background: The efficacy of continuous antibiotic prophylaxis in preventing urinary tract infection (UTI) in infants with grade III, IV, or V vesicoureteral reflux is controversial.

Methods: In this investigator-initiated, randomized, open-label trial performed in 39 European centers, we randomly assigned infants 1 to 5 months of age with grade III, IV, or V vesicoureteral reflux and no previous UTIs to receive continuous antibiotic prophylaxis (prophylaxis group) or no treatment (untreated group) for 24 months. The primary outcome was the occurrence of the first UTI during the trial period.

Childhood-Onset Sacroiliitis: Causes and Correlation Between Clinical Findings and Magnetic Resonance Imaging.

Objective: The aims of this study were to describe disease associations of magnetic resonance imaging (MRI)-confirmed and clinically symptomatic sacroiliitis in pediatric patients with rheumatic diseases and to examine the relationship between patient characteristics and MRI findings of the sacroiliac joint (SIJ).

Methods: Demographic and clinical data were extracted from the electronic medical records of the patients with sacroiliitis followed in the last 5 years. Active inflammatory and structural damage lesions of the SIJ-MRI were examined by the modified Spondyloarthritis Research Consortium of Canada scoring system, and correlation analysis of these results with clinical characteristics was evaluated.

Antenatal Hyperechogenic Colon and Cystinuria.

A male newborn was investigated for history of antenatal hyperechogenic colon (HEC) detected at 32 weeks of gestation. In the first week of life, urinary ultrasonography showed nephrolithiasis. Urinary amino acid analysis expressed increased excretion of dibasic amino acids, and high urinary cystine levels were detected in both spot and 24-hour urine specimens.

What are the factors associated with the duration of remission of intra-articular corticosteroid injection in juvenile idiopathic arthritis?

Introduction: Intra-articular corticosteroid injection (IACI) is generally used in the management of juvenile idiopathic arthritis (JIA) to obtain rapid relief of active synovitis and functional recovery and to prevent the need for regular systemic therapy. The aim of this study was to investigate the outcome of IACI treatment and the factors associated with remission of synovitis.

Methods: The clinical records of JIA patients who received IACI between January 2014 and December 2020 in two pediatric rheumatology centers were reviewed.

Erysipelas-Like Erythema: A Manifestation of Severe Disease Phenotype in Pediatric Patients with Familial Mediterranean Fever.

Objective: Erysipelas-like erythema is the pathognomonic skin manifestation of familial Mediterranean fever although not frequently seen in the pediatric population. This study aims to describe the differences between patients presenting with and without erysipelas-like erythema and to examine the relation of erysipelas-like erythema with subclinical inflammation in a large pediatric cohort of familial Mediterranean fever patients.

Materials And Methods: This retrospective study from a single pediatric rheumatology referral center included familial Mediterranean fever patients with a follow-up for at least 6 months in the last 5 years.

The Characteristics of Pediatric Patients with Familial Mediterranean Fever Treated with Anti-Interleukin-1 Treatment.

Objective: Interleukin-1 inhibitors are effective agents used in colchicine resistance or intoler- ance during the treatment of familial Mediterranean fever. This study aims to review the char- acteristics of patients treated with interleukin-1 inhibitors and their long-term follow-up in a large pediatric cohort of familial Mediterranean fever patients.

Materials And Methods: The study was conducted in a pediatric rheumatology reference cen- ter.

The expanded spectrum of arthritis in children with familial Mediterranean fever.

Introduction: Familial Mediterranean fever (FMF) is the most common monogenic autoinflammatory disease that can present with various forms of arthritis. This retrospective study aims to evaluate the characteristics of patients with arthritis in a large pediatric cohort of FMF patients.

Methods: The demographic and clinical data were extracted from electronic medical records.

Nutcracker syndrome: a potentially underdiagnosed cause of proteinuria in children with familial Mediterranean fever.

Introduction: Familial Mediterranean fever (FMF) is the most common hereditary autoinflammatory disease with an increased risk for secondary amyloidosis. Since lifelong colchicine has been the treatment of choice that prevents renal amyloidosis, non-amyloid kidney diseases are more frequently considered in the differential diagnosis of proteinuria. Nutcracker syndrome (NCS) can be one of the confounding causes.

Low-Dose Antibiotic Prophylaxis Induces Rapid Modifications of the Gut Microbiota in Infants With Vesicoureteral Reflux.

Maturation of the gut microbiota (GM) in infants is critically affected by environmental factors, with potential long-lasting clinical consequences. Continuous low-dose antibiotic prophylaxis (CAP) is the standard of care for children with vesicoureteral reflux (VUR), in order to prevent recurrent urinary tract infections. We aimed to assess short-term GM modifications induced by CAP in infants.

Infantile systemic lupus erythematous presenting as nephrotic syndrome in a 12-month-old boy: a case report.

Background: Systemic lupus erythematous (SLE) is extremely rare in infants and has been reported to be a much more severe disease with higher prevalence of critical organ involvement. Herein we present the clinical and laboratory features of infantile SLE (iSLE) with an onset of nephrotic syndrome (NS) during the first year of life.

Case: A 12-month-old boy was suffering from generalized edema for two months.

Chronic non-bacterial osteomyelitis: another disease associated with MEFV gene mutations.

Objectives: Chronic non-bacterial osteomyelitis (CNO) is an autoinflammatory bone disease of unknown aetiology. The relationship between CNO and familial Mediterranean fever (FMF) is not clearly documented so far. This cross-sectional study aims to evaluate the clinical and laboratory characteristics of a cohort of CNO patients within the context of its relationship with FMF and MEFV gene mutations.

Active vitamin D is cardioprotective in experimental uraemia but not in children with CKD Stages 3-5.

Background: Uraemic cardiac remodelling is associated with vitamin D and Klotho deficiency, elevated fibroblast growth factor 23 (FGF23) and activation of the renin-angiotensin system (RAS). The cardioprotective properties of active vitamin D analogues in this setting are unclear.

Methods: In rats with 5/6 nephrectomy (5/6Nx) treated with calcitriol, the cardiac phenotype and local RAS activation were investigated compared with controls.

The changing resistance patterns of bacterial uropathogens in children.

Background: Increased antimicrobial resistance is a problem in managing urinary tract infections (UTI). With this study we assessed the resistance patterns of urinary isolates in children with UTI between January 2017 and January 2018.

Methods: A retrospective cohort study was conducted.

The effect of genotype on musculoskeletal complaints in patients with familial Mediterranean fever.

: Familial Mediterranean fever (FMF) is an autosomal recessive disease, characterized by recurrent, self limited attacks of fever with serositis. The aim of this study was to describe the frequency of musculoskeletal complaints in children with FMF and to investigate the effect of genotype on these findings.: Files of patients who had been seen in our department (during routine follow-up visits) were retrospectively evaluated.

Management of antenatal hydronephrosis.

Antenatal hydronephrosis (AHN) is the most frequently detected abnormality by prenatal ultrasonography. Differential diagnosis of AHN includes a wide variety of congenital abnormalities of the kidney and urinary tract ranging from mild abnormalities such as transient or isolated AHN to more important ones as high-grade congenital vesicoureteral reflux or ureteropelvic junction obstruction. It is well known that the outcome depends on the underlying etiology.

Clinical features and disease severity of Turkish FMF children carrying E148Q mutation.

Background: Familial Mediterranean fever (FMF) is the most common hereditary monogenic autoinflammatory disease caused by mutations in the MEFV gene. It is controversial whether E148Q alteration is an insignificant variant or a disease-causing mutation. The aim of this study was to evaluate the clinical features and disease severity of FMF patients carrying E148Q mutation.