Publications by authors named "Brazier F"

Background: The serum calcification propensity test (or T50 test) might become a standard tool for the assessment of vascular calcification risk and T50 might be a valuable biomarker in clinical trials of treatments intended to slow the progression of vascular calcification. Literature data suggest that non-calcium-containing phosphate binders can influence T50 in chronic dialysed patients. However, it is not clear whether similar interventions are effective in patients at earlier stages of chronic kidney disease (CKD).

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Background: The development of noninvasive markers to assess mucosal healing in ulcerative colitis (UC) is essential in the treat-to-target era. The aim of this study was to evaluate the performance of intestinal ultrasound (IUS), fecal calprotectin (FC), and their combination to assess mucosal healing in UC patients.

Methods: All consecutive patients between January 2021 and September 2022 with UC who underwent a complete colonoscopy and IUS and/or an FC test within 4 weeks were included in a prospective cohort.

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Polyomaviruses BK (BKPyV) and JC (JCPyV), belonging to the Polyomaviridae, are responsible for human pathologies. In kidney transplant recipients, BKPyV replication can lead to irreversible nephron damage whereas JCPyV replication remains asymptomatic. Concomitant replication is rare and potential competition between the infections has been described.

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Introduction: Endoscopy is still the gold, standard for assessing disease activity in Crohn's disease (CD). Its invasiveness, poor acceptability, and cost limit its use in the era of tight control and treat-to-target management. Fecal calprotectin (FC) and intestinal ultrasound (IUS) are non-invasive alternatives to colonoscopy to assess disease activity.

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Background/objectives: In the absence of an effective antiviral treatment for BK polyomavirus (BKPyV), a better understanding of the epidemiology and time course of BKPyV replication after kidney transplantation is needed to limit the virus's impact on the graft outcome.

Methods: In a 7-year study, we screened more than 430 kidney transplant recipients and analyzed the time course and virological characteristics of BKPyV replication.

Results: Urinary viral replication was observed in 116 (27%) of the 430 patients, and 90 of the 116 (78%) had viral DNAemia.

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To understand how open research data sharing and reuse can be further improved in the field of Epidemiology, this study explores the facilitating role that infrastructural and institutional arrangements play in this research discipline. It addresses two research questions: 1) What influence do infrastructural and institutional arrangements have on open research data sharing and reuse practices in the field of Epidemiology? And 2) how could infrastructural and institutional instruments used in Epidemiology potentially be useful to other research disciplines? First, based on a systematic literature review, a conceptual framework of infrastructural and institutional instruments for open research data facilitation is developed. Second, the conceptual framework is applied in interviews with Epidemiology researchers.

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Pendrin (SLC26A4) is an anion exchanger from the SLC26 transporter family which is mutated in human patients affected by Pendred syndrome, an autosomal recessive disease characterized by sensoneurinal deafness and hypothyroidism. Pendrin is also expressed in the kidney where it mediates the exchange of internal HCO for external Cl at the apical surface of renal type B and non-A non-B-intercalated cells. Studies using pendrin knockout mice have first revealed that pendrin is essential for renal base excretion.

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Background: Statins are recommended in kidney transplant recipients (KTRs)-a population with a high risk of major cardiovascular (CV) events. However, the literature data on the effectiveness of statins in KTRs are sparse and inconclusive. The present study's objective was to evaluate the association between statin exposure and atherosclerotic CV events in KTRs and the biochemical effectiveness of statins on the lipid profile.

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Article Synopsis
  • The study examines kidney transplantation outcomes for patients with renal AA amyloidosis, revealing previously unclear results regarding survival and disease recurrence, mostly based on older data.
  • Conducted as a retrospective multicenter cohort study, it analyzed patients who underwent transplantation in France from 2008 to 2018, focusing on factors like age and treatment methods.
  • Results indicated high survival rates (94% at 1 year, 85.5% at 5 years) but also significant complications, including infection (55.8%) and acute rejection episodes (27.9%), with a low recurrence rate of amyloidosis (5.8%).
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  • Kidney transplant recipients (KTRs) show a weak humoral response to COVID-19 vaccines, and the specific factors affecting this response to three vaccine doses are still unclear.
  • A study at Amiens University Hospital analyzed KTRs and found that 66.3% were seropositive while only 26.1% had an optimal antibody response; seropositivity was strongly linked to a history of COVID-19.
  • Significant non-response factors included being female, time since transplant, higher creatinine levels, and specific immunosuppressive medications.
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Background: The risk of fragility fractures is high in kidney transplant recipients, and steroids are reportedly a major cause. Other drugs known to induce fragility fractures have been studied in the general population but not in kidney transplant recipients. Here, we investigated the association between exposure over time to drugs that can injure bone (namely vitamin K antagonists, insulin, loop diuretics, proton pump inhibitors, opioids, selective serotonin reuptake inhibitors, antiepileptics and benzodiazepines) and incident fractures and changes over time in T-scores in this population.

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Introduction: There is debate over the impact of residual microscopic disease after ileocecal resection in Crohn's disease (CD) to predict recurrence. We conducted a meta-analysis to evaluate the impact of positive histological margins and plexitis after ileocecal resection on the risk of postoperative recurrence.

Methods: Using a systematic search, we identified.

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Biallelic pathogenic variants in the SLC34A3 gene, encoding for the NPT2c cotransporter, cause Hereditary Hypophosphatemic Rickets with Hypercalciuria (HHRH). However, the associated phenotype is highly variable. In addition, mice deleted for Slc34a3 exhibit a different phenotype compared to humans, without urinary phosphate leakage.

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Iron deficiency is very common in chronic kidney disease, even before the dialysis stage. It is an independent factor of morbidity and mortality in patients with non-dialysis chronic kidney disease. During chronic kidney disease, iron deficiency is defined by a transferrin saturation <20% and/or a serum ferritin <100 μg/L.

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Background: Endoscopy is the gold standard for the treatment of postoperative gastric leaks (GL). Large fistulas are associated with high rate of treatment failure. The objective of this study was to assess the clinical efficacy of a combining technique using a covered stent (CS) crossing through pigtails (PDs) for large postsurgical GL leaks.

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Introduction: Elective stoma closure (ESC) is a common procedure. The main complication of ESC is anastomotic leakage, which can be revealed by peritonitis or an enterocutaneous fistula (ECF). The objective of the present study was to describe the natural history of AL after ESC.

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Article Synopsis
  • Patients with chronic inflammatory diseases like IBD have a higher risk of colorectal cancer, primarily adenocarcinomas, but leiomyosarcomas are very rare.
  • A case study highlights a 40-year-old woman with ulcerative colitis who developed a 2cm malignant tumor infiltrating the rectal wall.
  • The tumor showed specific cellular characteristics and further studies include a review of 5 similar cases linked to Crohn's disease and ulcerative colitis from existing literature.
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Background: Generalized anxiety disorder (GAD) refers to extreme, uncontrollable, and persistent worry and anxiety. The disorder is known to affect the social functioning and well-being of millions of people, but despite its prevalence and burden to society, it has proven difficult to identify unique behavioral markers. Interestingly, the worrying behavior observed in GAD is argued to stem from a verbal linguistic process.

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Introduction: Crohn's disease (CD) has a significant impact on health status and quality of life, affecting physical and emotional well-being and impairing social and functional abilities. In the era of the treat-to-target concept, endoscopic healing has emerged as the goal to achieve to prevent intestinal damage and disability. It is not clear what level of endoscopic healing is associated with lower disability.

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Crohn's disease is a chronic inflammatory bowel disease that affects various intestinal segments and can involve the perianal region. Although anti-tumor necrosis factor (TNF) agents have revolutionized the management of Crohn's disease and improved the prognosis for patients with perianal Crohn's disease (pCD), their long-term effectiveness is limited: over 60% of patients relapse after one year of maintenance therapy. In recent years, significant advances have been made in the treatment of complex perianal fistulas after anti-TNF failure.

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Article Synopsis
  • Endoscopic treatment for enterocutaneous fistulas in Crohn's disease shows promise, with a short-term clinical success rate of 75% in this study of 8 patients.
  • Most patients had fistulas located at ileocolonic or colocolonic anastomoses, with various endoscopic techniques successfully applied.
  • Limitations include the small sample size and retrospective design, suggesting further research is necessary to validate the findings.
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Background: Chronic kidney disease (CKD) is one of the main long-term prognosis factors in methylmalonic acidemia (MMA), a rare disease of propionate catabolism. Our objective was to precisely address the clinical and biological characteristics of long-term CKD in MMA adolescent and adult patients.

Patients And Methods: In this retrospective study, we included MMA patients older than 13 years who had not received kidney and/or liver transplantation.

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