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- Zaghrini, C., et al.
(författare)
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Novel ELISA for thrombospondin type 1 domain-containing 7A autoantibodies in membranous nephropathy
- 2019
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Ingår i: Kidney International. - : Elsevier BV. - 0085-2538. ; 95:3, s. 666-679
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Tidskriftsartikel (refereegranskat)abstract
- Autoantibodies against phospholipase A2 receptor 1 (PLA2R1) and thrombospondin type 1 domain-containing 7A (THSD7A) are emerging as biomarkers to classify membranous nephropathy (MN) and to predict outcome or response to treatment. Anti-THSD7A autoantibodies are detected by Western blot and indirect immunofluorescence test (IIFT). Here, we developed a sensitive enzyme-linked immunosorbent assay (ELISA) optimized for quantitative detection of anti-THSD7A autoantibodies. Among 1012 biopsy-proven MN patients from 6 cohorts, 28 THSD7A-positive patients were identified by ELISA, indicating a prevalence of 2.8%. By screening additional patients, mostly referred because of PLA2R1-unrelated MN, we identified 21 more cases, establishing a cohort of 49 THSD7A-positive patients. Twenty-eight patients (57%) were male, and male patients were older than female patients (67 versus 49 years). Eight patients had a history of malignancy, but only 3 were diagnosed with malignancy within 2 years of MN diagnosis. We compared the results of ELISA, IIFT, Western blot, and biopsy staining, and found a significant correlation between ELISA and IIFT titers. Anti-THSD7A autoantibodies were predominantly IgG4 in all patients. Eight patients were double positive for THSD7A and PLA2R1. Levels of anti-THSD7A autoantibodies correlated with disease activity and with response to treatment. Patients with high titer at baseline had poor clinical outcome. In a subgroup of patients with serial titers, persistently elevated anti-THSD7A autoantibodies were observed in patients who did not respond to treatment or did not achieve remission. We conclude that the novel anti-THSD7A ELISA can be used to identify patients with THSD7A-associated MN and to monitor autoantibody titers during treatment.
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- Gauckler, Philipp, et al.
(författare)
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Rituximab in adult minimal change disease and focal segmental glomerulosclerosis - What is known and what is still unknown?
- 2020
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Ingår i: Autoimmunity Reviews. - : Elsevier BV. - 1568-9972 .- 1873-0183. ; 19:11
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Forskningsöversikt (refereegranskat)abstract
- Primary forms of minimal change disease and focal segmental glomerulosclerosis are rare podocytopathies and clinically characterized by nephrotic syndrome. Glucocorticoids are the cornerstone of the initial immunosuppressive treatment in these two entities. Especially among adults with minimal change disease or focal segmental glomerulosclerosis, relapses, steroid dependence or resistance are common and necessitate re-initiation of steroids and other immunosuppressants. Effective steroid-sparing therapies and introduction of less toxic immunosuppressive agents are urgently needed to reduce undesirable side effects, in particular for patients whose disease course is complex. Rituximab, a B cell depleting monoclonal antibody, is increasingly used off-label in these circumstances, despite a low level of evidence for adult patients. Hence, critical questions concerning drug-safety, long-term efficacy and the optimal regimen for rituximab-treatment remain unanswered. Evidence in the form of large, multicenter studies and randomized controlled trials are urgently needed to overcome these limitations.
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- Gauckler, Philipp, et al.
(författare)
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Rituximab in Membranous Nephropathy
- 2021
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Ingår i: Kidney International Reports. - : Elsevier BV. - 2468-0249. ; 6:4, s. 881-893
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Forskningsöversikt (refereegranskat)abstract
- Membranous nephropathy (MN) is the most common cause of primary nephrotic syndrome among adults. The identification of phospholipase A2 receptor (PLA2R) as target antigen in most patients changed the management of MN dramatically, and provided a rationale for B-cell depleting agents such as rituximab. The efficacy of rituximab in inducing remission has been investigated in several studies, including 3 randomized controlled trials, in which complete and partial remission of proteinuria was achieved in approximately two-thirds of treated patients. Due to its favorable safety profile, rituximab is now considered a first-line treatment option for MN, especially in patients at moderate and high risk of deterioration in kidney function. However, questions remain about how to best use rituximab, including the optimal dosing regimen, a potential need for maintenance therapy, and assessment of long-term safety and efficacy outcomes. In this review, we provide an overview of the current literature and discuss both strengths and limitations of “the new standard.”
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- Nelen, W. L., et al.
(författare)
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The methodological quality of clinical guidelines of the European Society of Human Reproduction and Embryology (ESHRE)
- 2008
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Ingår i: Human Reproduction. - : Oxford University Press (OUP). - 1460-2350 .- 0268-1161. ; 23:8, s. 1786-92
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Clinical practice guidelines bridge the gap between the evidence from literature and clinical practice, and they may provide guidance in ethical, legal and societal dilemmas. To explore the potentials for future international guideline development within the field of human reproduction and embryology, we assessed the quality of existing guidelines produced by the European Society of Human Reproduction and Embryology (ESHRE). METHODS: We systematically searched for the ESHRE guidelines produced after 1996 in electronic databases and on the Internet. Subsequently, we assessed the methodological quality of these guidelines using the validated Appraisal of Guidelines for Research and Evaluation (AGREE) Instrument. RESULTS: The overall methodological quality of most of the 11 selected ESHRE guidelines was poor. Most of the guidelines scored <30% in the domains of 'stakeholder involvement', 'rigour of development', 'applicability' and 'editorial independence'. Only one guideline was rated 'strongly recommended'. CONCLUSIONS: The methodological quality of the guidelines produced under the auspices of ESHRE can be improved. We suggest a systematic, up-to-date methodology, investment in guideline development specialists, systematic quality control and the incorporation of indicator development. Furthermore, attention should be paid to the document nomenclature, and an ESHRE guidelines' summary on a special part of the ESHRE website would be a good initiative.
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