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Background: Proliferative glomerulonephritis with monoclonal immunoglobulin deposits (PGNMID) is a rare entity classified under the umbrella of monoclonal gammopathy of renal significance. The clinical implications of circulating monoclonal immunoglobulin (MIg), light chain restriction on immunofluorescence (IF) microscopy, histopathological pattern, and type of therapy on renal outcomes are not clearly defined.

Materials And Methods: Sixteen patients of PGNMID diagnosed between 2013 and 2020 were included from a biopsy registry of 11,459 patients at a single center.

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Immune complex-mediated membranoproliferative glomerulonephritis (IC-MPGN) and complement 3 glomerulopathy (C3G) are rare, complement-mediated kidney diseases, previously classified under the group of kidney disorders termed membranoproliferative glomerulonephritis (MPGN) type 1, type 2, and type 3. Despite new advances in our understanding of IC-MPGN and C3G, several unmet needs persist in the diagnosis and management of patients with these nephropathies, due in part to their rarity and their overlapping clinical presentations, histologic features, and underlying pathophysiologies. This review summarizes our current understanding of the role of complement in IC-MPGN and C3G, and underlines the key histopathologic differences between the diseases.

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Article Synopsis
  • Membranous proliferative glomerulonephritis (MPGN) is a rare kidney condition characterized by specific pathological changes, observed in a 77-year-old man with mild proteinuria and hematuria.
  • Laboratory tests indicated elevated MPO-ANCA levels and a renal biopsy showed distinct features that confirmed MPGN type 3.
  • The patient responded well to treatment with an SGLT2 inhibitor and the case raises questions about the association between high MPO-ANCA levels and latent tuberculosis infection, suggesting a potential link that needs further investigation.*
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Case report: membranoproliferative glomerulonephritis associated with Q fever causing chronic endocarditis.

BMC Nephrol

September 2024

Department of Internal Medicine and Nephrology, Herz-Jesu-Krankenhaus Münster-Hiltrup, Münster-Hiltrup, Germany.

Background: Membranoproliferative glomerulonephritis is a rare entity which can be a result from autoimmune diseases, caused by various medications and infections.

Case Presentation: We herein present the case of a 62-year-old male patient who presented with fatigue and was found to have severe anemia, impaired renal function, and nephrotic syndrome. A renal biopsy revealed membranoproliferative glomerulonephritis (MPGN) of the immune complex type with activation of the classical complement pathway.

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Background: Globally, the predominant histopathologic characteristic of childhood nephrotic syndrome has been minimal change nephropathy (MCN). However, some studies from Africa and Nigeria have revealed otherwise. It is imperative that this pattern is re-examined from time to time given changing disease and environmental dynamics from place to place.

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