Publications by authors named "Bartosh S"

Article Synopsis
  • Vesicoureteral reflux (VUR) is a problem that can happen to kids who get kidney transplants, but not much is known about how it affects their new kidneys.
  • A study looked at 74 kids who got kidney transplants between 2007 and 2020 to see how VUR affected their health, checking for infections and kidney function.
  • The results showed that kids with high-grade VUR were more likely to develop urinary tract infections (UTIs), especially severe ones, but both groups had the same chances of keeping their transplanted kidney alive.
View Article and Find Full Text PDF

Background: Obesity is associated with increased complications, rejection, and graft loss after kidney transplantation in adult and pediatric recipients. Elevated body mass index (BMI) is a common contraindication to transplant at adult kidney transplant programs; however, there is no data on such limitations for pediatric patients.

Methods: Between October and December 2022, we conducted a survey of Pediatric Nephrology Research Consortium centers assessing the use of BMI in pediatric kidney transplant evaluation.

View Article and Find Full Text PDF
Article Synopsis
  • Probiotics are beneficial microorganisms that may improve health, but their use in pediatric kidney transplant recipients is not well studied.
  • A survey of pediatric nephrologists revealed that about 42.2% have prescribed probiotics to these patients primarily for treating antibiotic-associated diarrhea, with concerns about safety impacting their use.
  • There is considerable variation in practice among nephrologists regarding probiotic use, emphasizing the need for more research on safety and effectiveness in transplant recipients.
View Article and Find Full Text PDF

Background: Alemtuzumab is a lymphocyte depleting agent used for induction in kidney transplant, but long-term information on its use in pediatric recipients remains sparse.

Methods: We performed a single-center retrospective cohort study of 57 pediatric kidney transplant recipients receiving alemtuzumab 20 mg/m/dose ×2 doses for induction immunosuppression. All patients underwent surveillance biopsies, and 91.

View Article and Find Full Text PDF

Children registered for kidney transplants prior to the age of 18 years retain "pediatric" allocation status after their 18th birthday. There are no data on the impact of this policy. We performed a retrospective cohort study of 7097 candidates listed for kidney transplant prior to 18 years of age who remained on the waitlist after their 18th birthday between January 1, 2015, and April 1, 2022, using United Network for Organ Sharing data.

View Article and Find Full Text PDF
Article Synopsis
  • Focal segmental glomerular sclerosis (FSGS) is a leading cause of nephrotic syndrome that can lead to end-stage kidney disease and is known to recur after kidney transplants, increasing the risk of graft loss and patient complications.* -
  • A research group conducted a comprehensive review of existing literature to establish guidelines focused on the causes, risk factors, and management strategies for recurrent FSGS, examining 614 studies and narrowing it down to 221 relevant ones.* -
  • The resulting recommendations indicate the need for further studies to enhance and solidify the guidelines for managing recurrent FSGS in transplant patients.*
View Article and Find Full Text PDF

In pediatric kidney failure, native kidneys may pose a risk to successful transplant outcomes. The indications and timing of native nephrectomy represent a controversial management decision. A lack of high-quality, outcomes-based data has prevented development of evidence-based guidelines for intervention.

View Article and Find Full Text PDF

IgA nephropathy (IgAN) is associated with a risk for posttransplant recurrence. Data are limited regarding graft loss attributable to recurrence of IgAN among pediatric and young adult kidney transplant (KT) recipients. This was a retrospective cohort study of patients aged 0 to 25 years from the Scientific Registry of Transplant Recipients who received a primary KT for IgAN.

View Article and Find Full Text PDF

There have been no published studies evaluating competency or perceived competency in kidney transplant–related knowledge and skills among graduates of pediatric nephrology fellowships. There are also no uniform specific transplant requirements within the pediatric nephrology fellowship. We aim to further understand this potential gap to rectify it in the future.

View Article and Find Full Text PDF

Background: The SARS-CoV-2 pandemic and corresponding acute respiratory syndrome have affected all populations and led to millions of deaths worldwide. The pandemic disproportionately affected immunocompromised and immunosuppressed adult patients who had received solid organ transplants (SOTs). With the onset of the pandemic, transplant societies across the world recommended reducing SOT activities to avoid exposing immunosuppressed recipients.

View Article and Find Full Text PDF

Background: The United States organ allocation policies prioritize kidney-pancreas and other multiorgan candidates above pediatric kidney-alone candidates, but the effects of these policies are unclear.

Methods: We used OPTN data to describe trends in multiorgan and kidney-pancreas transplantation and identify 377 next-sequential pediatric kidney-alone candidates between 4/1/2015 and 10/31/2019 for individual-level analysis.

Results: Eleven percent of all kidneys were allocated as part of a multiorgan or kidney-pancreas transplant and 6% of pediatric kidney candidates were impacted.

View Article and Find Full Text PDF

Background: A new Kidney Allocation System (KAS) was implemented in the United States in 2014 with the goal of improving equity and utility.

Methods: In this study, we compare outcomes for kidney-alone candidates less than 18 years of age, at the time of listing, in the 5 years prior to and following policy implementation using Organ Procurement and Transplantation Network data.

Results: While the pediatric deceased donor transplant rate increased under KAS, this increase was due solely to improved access for children aged 11-17 years; there was an 18.

View Article and Find Full Text PDF

Background: FSGS is a common indication for kidney transplant with a high-risk of posttransplant recurrence.

Methods: In this review, we summarize current knowledge about FSGS recurrence after kidney transplantation, including epidemiology, pretransplant planning, posttransplant management, and investigational treatments.

Results: FSGS recurs in 14%-60% of first transplants, likely associated with a circulating permeability factor.

View Article and Find Full Text PDF

Introduction: The slow increase in use of telemedicine began to expand rapidly, along with reimbursement changes, during the coronavirus disease-2019 (COVID-19) pandemic. Standardized protocols for these services are lacking but are needed for effective and equitable health care. In this study, we queried pediatric nephrologists and their patients about their telemedicine experiences during the pandemic.

View Article and Find Full Text PDF

The Chronic Kidney Disease in Children (CKiD) prospective cohort study was designed to address the neurocognitive, growth, cardiovascular, and disease progression of children and adolescents with mild to moderate CKD. The study has had continuous funding from NIDDK for 17 years and has contributed significant advances in pediatric CKD. The goals of this educational review are threefold: (1) to provide an overview of the neurocognitive and psychosocial studies from CKiD to date; (2) to provide best practice recommendations for those working with the neurocognitive and psychosocial aspects of pediatric CKD based on CKiD findings; and (3) to help chart future goals and directives for both research and clinical practice.

View Article and Find Full Text PDF

Introduction: There are no guidelines regarding management of failed pediatric renal transplants.

Materials & Methods: We performed a first of its kind multicenter study assessing prevalence of transplant nephrectomy, patient characteristics, and outcomes in pediatric renal transplant recipients with graft failure from January 1, 2006, to December 31, 2016.

Results: Fourteen centers contributed data on 186 pediatric recipients with failed transplants.

View Article and Find Full Text PDF

Introduction: Prior cross-sectional studies suggest that health-related quality of life (HRQOL) worsens with more severe glomerular disease. This longitudinal analysis was conducted to assess changes in HRQOL with changing disease status.

Methods: Cure Glomerulonephropathy (CureGN) is a cohort of patients with minimal change disease, focal segmental glomerulosclerosis, membranous nephropathy, IgA vasculitis, or IgA nephropathy.

View Article and Find Full Text PDF

Background: Hyperkalemia is a potentially life-threatening complication of chronic kidney disease (CKD). Dietary potassium restriction is challenging in infants despite low-potassium formulas. Decreasing potassium in formula using patiromer, a new calcium-based cation exchange polymer may be one option to accomplish this; however, data confirming efficacy is lacking.

View Article and Find Full Text PDF

There is scant literature describing the effect of glomerular disease on health-related quality of life (HRQOL). The Cure Glomerulonephropathy study (CureGN) is an international longitudinal cohort study of children and adults with four primary glomerular diseases (minimal change disease, focal segmental glomerulosclerosis, membranous nephropathy, and IgA nephropathy). HRQOL is systematically assessed using items from the Patient-Reported Outcomes Measurement Informative System (PROMIS).

View Article and Find Full Text PDF

Pediatric renal transplant recipients experience side effects of immunosuppression. Few immunoassays exist which can assess the adequacy of immunosuppression. We developed a CKT, whereby cytokine levels are measured in a five-day mixed lymphocyte reaction.

View Article and Find Full Text PDF

In an open-label, prospective, pharmacokinetic assessment, we evaluated total drug exposure (area under the curve [AUC]) of intravenous (IV) ganciclovir (GCV) and oral (p.o.) valganciclovir when normalized for body surface area (BSA) in pediatric liver (n=20) and renal (n=26) transplant patients Reference doses for IV GCV (200 mg/m(2)) and p.

View Article and Find Full Text PDF

In an effort to reduce rejection, extend allograft survival and minimize complications, we hypothesized that robust immunosuppression during the first 6 months after transplantation would allow for the safe withdrawal of steroids. A total of 274 pediatric subjects were enrolled and received an anti-CD25 antibody, sirolimus, calcineurin inhibitor and steroids. At 6 months after transplantation, subjects were randomized to steroid withdrawal (n=73) versus continued low-dose steroids (n=59).

View Article and Find Full Text PDF

Transition of care from pediatric to adult-oriented health care providers is difficult for children with special health care needs. Children who have received solid organ transplants and their providers experience the same difficulties and frustrations as children with other major illnesses. A consensus conference was organized by several transplant organizations to identify major issues in this area and recommend possible approaches to easing the process of transition for solid organ transplant recipients.

View Article and Find Full Text PDF