INVESTIGATING ETIOLOGIES AND RENAL HISTOLOGIC PATTERNS IN 6 ELDERLY PATIENTS WITH NEPHROTIC SYNDROME

2015 ◽  
pp. 85-92
Author(s):  
Bach Nguyen ◽  
Thi Thuy Trang Le ◽  
Ngoc Linh Huynh
Keyword(s):  
Nephrotic Syndrome ◽  
Elderly Patients ◽  
Kidney Biopsy ◽  
The Elderly ◽  
Minimal Change ◽  
Renal Pathology ◽  
Invasive Technique ◽  
Renal Amyloidosis ◽  
Glomerular Diseases

Background: Nephrotic syndrome (NS) is the most common manifestation of glomerular diseases in the elderly and a most common indication of kidney biopsy. NS in the elderly is not as common as the young but more difficult to make diagnosis of etiologies, classification of renal histologic patterns and treatment because NS is frequently associated with various coexisting conditions. In Vietnam, the elderly population has been increased significantly therefore frequency of the elderly patients with NS is also increasing. Kidney biopsy is an invasive technique that is useful in diagnosing etiologies and classifying renal pathology. During recent years, renal pathology and biochemical immunology have been progressing rapidly. Therefore, the results of kidney biopsy are usually potential and valuable in clinical practice. We reported 6 elderly patients with NS performed kidney biopsy in Department of Nephrology, HCMCity during the period from 2/2012 to 12/2014 to investigate etiologies and renal histologic patterns. Materials and method: case report. The reported clinical cases were primary renal amyloidosis, IgA nephropathy secondary to liver cancer, minimal change NS associated with diabetes, NS caused by renal lymphoma infiltration, NS with minimal change associated by interferon and thrombotic microangiopathy. Conclusions: Nephrotic syndrome in the elderly might be associated with coexisting conditions and caused by several primary and secondary causes. Therefore, kidney biopsy should be considered to perform to make exact diagnosis in etiology, and to classify histologic patterns. Key words: Nephrotic syndrome, elderly, histologic patterns, kidney biopsy

scholarly journals Biopsy or Biomarker? Children With Minimal Change Disease Have a Distinct Profile of Urinary Epidermal Growth Factor

2021 ◽  
Vol 9 ◽  
Author(s):  
Niels Lodeweyckx ◽  
Kristien Wouters ◽  
Kristien J. Ledeganck ◽  
Dominique Trouet
Keyword(s):  
Nephrotic Syndrome ◽  
Kidney Function ◽  
Genetic Predisposition ◽  
Minimal Change Disease ◽  
Kidney Biopsy ◽  
Ace Inhibition ◽  
Minimal Change ◽  
Healthy Children ◽  
Glomerular Diseases ◽  
Epidermal Growth

Background: In this study, the profile of urinary EGF excretion (uEGF/uCreat) was mapped in children presenting with prolonged proteinuria or with nephrotic syndrome refractory to or dependent of steroids. We investigated whether uEGF/uCreat could be linked to the underlying biopsy result, taking into account its response to immunosuppressive medication and to ACE inhibition, as well as genetic predisposition.Methods: Ninety-eight pediatric patients with initial presentation of nephrotic syndrome or prolonged proteinuria were included in this study, along with 49 healthy controls and 20 pediatric Alport patients. All patients had a normal kidney function and were normotensive during the course of the study, whether or not under ACE inhibition. In repeated urine samples, uEGF was measured and concentration was normalized by urine creatinine. In order to compare diagnosis on kidney biopsy, genetic predisposition and response of uEGF/uCreat to immunosuppression and to ACE inhibition, uEGF/uCreat is studied in a linear mixed effects model.Results: Patients with Minimal Change Disease (MCD) showed a significantly different profile of uEGF/uCreat in comparison to healthy children, as well as compared to patients with Focal Segmental Glomerulosclerosis (FSGS) or another glomerulopathy on kidney biopsy. The response of uEGF/uCreat to ACE inhibition was absent in minimal change disease and contrasted with an impressive beneficial effect of ACE inhibition on uEGF/uCreat in FSGS and other proteinuric glomerulopathies. Absence of a genetic predisposition was also associated with a significantly lower uEGF/uCreat.Conclusions: Despite preserved kidney function, children with a proteinuric or nephrotic glomerular disease on kidney biopsy show a significantly lower uEGF/uCreat, indicative of early tubulo-interstitial damage, which appears reversible under ACE inhibition in any underlying glomerulopathy except in minimal change disease. In view of the distinct profile of uEGF/uCreat in minimal change disease compared to other glomerulopathies, and the link between genetic predisposition and uEGF/uCreat, our study suggests that uEGF/uCreat can be a helpful tool to decide on the need for a renal biopsy in order to differentiate minimal change disease from other proteinuric glomerular diseases.

scholarly journals Kidney biopsy in very elderly patients: indications, therapeutic impact and complications. 

2021 ◽  
Author(s):  
Mathilde Fedi ◽  
Mickaël Bobot ◽  
Julia Torrents ◽  
Pierre Gobert ◽  
Eric Magnant ◽  
...  
Keyword(s):  
Elderly Patients ◽  
Kidney Biopsy ◽  
Renal Involvement ◽  
Specific Treatment ◽  
Kidney Injury ◽  
Severe Bleeding ◽  
Very Elderly ◽  
Hypertensive Nephropathy ◽  
Glomerular Diseases ◽  
Therapeutic Impact

Abstract Background: Few data is available on the risk/benefit balance of native kidney biopsy (KB) in very elderly patients.Methods: Multicenter retrospective cohort study in the Aix-Marseille area: the results of KB and medical charts of all patients over 85 years biopsied between January 2010 and December 2018 were reviewed. Results: 104 patients were included. Median age was 87 years. Indications for KB were: acute kidney injury (AKI) in 69.2% of patients, nephrotic syndrome (NS) with AKI in 13.5%, NS without AKI in 12.5%, and proteinuria in 4.8%. Median serum creatinine was 262 mmol/L, 21% of patients required dialysis at the time of KB. Significant bleeding occurred in 7 (6.7%) patients, requiring blood cell transfusion in 4 (3.8%), and radiological embolization in 1 (1%). The most frequent pathological diagnoses were: non-diabetic glomerular diseases (29.8%, including pauci-immune crescentic glomerulonephritis in 9.6%), hypertensive nephropathy (27.9%), acute interstitial nephritis (16.3%), renal involvement of hematological malignancy (8.7%), and acute tubular necrosis (6.7%). After KB, 51 (49%) patients received a specific treatment: corticosteroids (41.3%), cyclophosphamide (6.7%), rituximab (6.7%), bortezomib (3.8%), other chemotherapies (3.8%). Median overall survival was 31 months. Median renal survival was higher in patients without AKI (p=0.007) or treated with corticosteroids (p=0.046). Dialysis-free survival censored for death was higher in patients without AKI (p=0.019), or treated (p=0.022), especially with corticosteroids (p=0.006).Conclusions: KB can reveal a diagnosis with therapeutic impact even in very elderly patients. Severe bleeding was not frequent in this cohort, but KB may have not been performed in more vulnerable patients.

scholarly journals Acute Kidney Injury Associated with Minimal Change Nephrotic Syndrome in an Elderly Patient Successfully Treated with both Fluid Management and Specific Therapy Based on Kidney Biopsy Findings

2020 ◽  
Vol 10 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Yuko Oyama ◽  
Yoichi Iwafuchi ◽  
Tetsuo Morioka ◽  
Ichiei Narita
Keyword(s):  
Elderly Patient ◽  
Acute Kidney Injury ◽  
Nephrotic Syndrome ◽  
Kidney Biopsy ◽  
Fluid Management ◽  
Kidney Injury ◽  
Oral Prednisolone ◽  
Minimal Change Nephrotic Syndrome ◽  
Minimal Change ◽  
Fluid Removal

Oliguric acute kidney injury (AKI) with minimal change nephrotic syndrome (MCNS) has long been recognized. Several mechanisms such as hypovolemia due to hypoalbuminemia and the nephrosarca hypothesis have been proposed. However, the precise mechanism by which MCNS causes AKI has not been fully elucidated. Herein, we describe an elderly patient with AKI caused by MCNS who fully recovered after aggressive volume withdrawal by hemodialysis and administration of a glucocorticoid. A 75-year-old woman presented with diarrhea and oliguria, and laboratory examination revealed nephrotic syndrome (NS) and severe azotemia. Fluid administration had no effect on renal dysfunction, and hemodialysis was initiated. Her renal function improved upon aggressive fluid removal through hemodialysis. Renal pathological findings revealed minimal change disease with faint mesangial deposits of IgA. After administration of methylprednisolone pulse therapy followed by oral prednisolone, she achieved complete remission from NS. The clinical course of this case supports the nephrosarca hypothesis regarding the mechanism of AKI caused by MCNS. Furthermore, appropriate fluid management and kidney biopsy are also important in elderly patients with AKI caused by NS.

Nephrotic syndrome

2018 ◽  
Author(s):  
William G. Herrington ◽  
Aron Chakera ◽  
Christopher A. O’Callaghan
Keyword(s):  
Nephrotic Syndrome ◽  
Diabetic Nephropathy ◽  
Membranous Nephropathy ◽  
Clinical Syndrome ◽  
Minimal Change ◽  
Renal Amyloidosis ◽  
Creatinine Ratio ◽  
Heavy Proteinuria ◽  
Nephrotic Range Proteinuria ◽  
Secondary Causes

Nephrotic syndrome is a clinical syndrome of heavy proteinuria (greater than 3.5 g per 24 hours), oedema, and hypoalbuminaemia, which is associated with hyperlipidaemia and a procoagulant state. Causes of nephrotic syndrome are traditionally classified by their histopathological descriptions. In most cases, the histological picture can have a primary (idiopathic) or secondary cause. Minimal change, membranous nephropathy, and focal segmental glomerulosclerosis account for over 60% of cases. Diabetic nephropathy and renal amyloidosis are common secondary causes of nephrotic syndrome. Nephrotic-range proteinuria will show up as at least 3+ protein on urinalysis. The diagnosis is confirmed by a urinary protein-to-creatinine ratio over 300 mg/mmol, and hypalbuminaemia. In adults, renal biopsy is the diagnostic test. This chapter addresses the causes, diagnosis, and management of nephrotic syndrome in adults.

scholarly journals Establishment of a novel nomogram for the clinically diagnostic prediction of minimal change disease, −a common cause of nephrotic syndrome

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Gaofei Yan ◽  
Guanzhi Liu ◽  
Xuefei Tian ◽  
Lifang Tian ◽  
Hao Wang ◽  
...  
Keyword(s):  
Nephrotic Syndrome ◽  
Renal Biopsy ◽  
Minimal Change Disease ◽  
Clinical Manifestations ◽  
Minimal Change ◽  
Adult Patients ◽  
Lasso Regression ◽  
Glomerular Diseases ◽  
Laboratory Test Results ◽  
Primary Glomerular Diseases

Abstract Background Minimal change disease (MCD) is one of the major causes of nephrotic syndrome (NS). A confirmed MCD diagnosis mainly depends on renal biopsy at present, which is an invasive procedure with many potential risks. The overall incidence of complications caused by renal biopsy procedures has been reported as approximately 11 and 6.6% outside and within China, respectively. Unfortunately, there is currently no noninvasive procedure or practical classification method for distinguishing MCD from other primary glomerular diseases available. Method A total of 1009 adult patients who underwent renal biopsy between January 2017 and November 2019 were enrolled in this study. Twenty-five parameters extracted from patient demographics, clinical manifestations, and laboratory test results were statistically analysed. LASSO regression analysis was further performed on these parameters. The parameters with the highest area under the curve (AUC) were selected and used to establish a logistic diagnostic prediction model. Results Of the 25 parameters, 14 parameters were significantly different (P < 0.05). MCD patients were mostly younger (36 (22, 55) vs. 41 (28.75, 53)) and male (59% vs. 52%) and had lower levels of diastolic blood pressure (DBP) (79 (71, 85.5) vs. 80 (74, 89)) and IgG (5.42 (3.17, 6.36) vs. 9.38 (6.79, 12.02)) and higher levels of IgM (1.44 (0.96, 1.88) vs. 1.03 (0.71, 1.45)) and IgE (160 (46.7, 982) vs. 47.3 (19, 126)) than those in the non-MCD group. Using the LASSO model, we established a classifier for adults based on four parameters: DBP and the serum levels of IgG, IgM, IgE. We were able to clinically classify adult patients with NS into MCD and non-MCD using this model. The validation accuracy of the logistic regression model was 0.88. A nomogram based on these four classifiers was developed for clinical use that could predict the probability of MCD in adult patients with NS. Conclusions A LASSO model can be used to distinguish MCD from other primary glomerular diseases in adult patients with NS. Combining the model and the nomogram potentially provides a novel and valuable approach for nephrologists to diagnose MCD, avoiding the complications caused by renal biopsy.

scholarly journals The Transition From Minimal Change Disease to Focal and Segmental Glomerulosclerosis in a Patient With Nephrotic Syndrome: a Case Report

2021 ◽  
Author(s):  
Long Tang ◽  
Zhen Cai ◽  
Yuan Meng ◽  
Wen-jing Zhao ◽  
Su-Xia Wang
Keyword(s):  
Nephrotic Syndrome ◽  
Minimal Change Disease ◽  
Kidney Biopsy ◽  
Elevated Serum ◽  
Minimal Change ◽  
Segmental Glomerulosclerosis ◽  
Stage Renal Disease ◽  
End Stage ◽  
The Relationship

Abstract Background:Although minimal change disease (MCD) and focal segmental glomerulosclerosis (FSGS) have been described as two separate forms of nephrotic syndrome(NS), they are not completely independent. We report a patient presenting a transition from MCD to FSGS, review the literature and explore the relationship between the two diseases.Case presentation:A 42-year-old male welder, Asian, presenting lower extremity edema and elevated serum creatinine, had laboratory exams indicating NS and end-stage renal disease(ESRD). The patient had a kidney biopsy 20 years earlier for NS, which indicated MCD, and this repeated kidney biopsy suggested FSGS. After treatment follow-up, the patient was eventually admitted to renal replacement therapy. Conclusions:MCD and FSGS may be different stages of the same disease. The transition from MCD to FSGS in this case indicates the progression of the disease, which may be related to the excessive metal caused by occupation.

scholarly journals An Update of Management of Idiopathic Nephrotic Syndrome: A Review Article

2013 ◽  
Vol 37 (2) ◽  
pp. 102-121
Author(s):  
MH Rahman ◽  
T Jesmin ◽  
G Muinuddin
Keyword(s):  
Nephrotic Syndrome ◽  
Kidney Disease ◽  
Child Health ◽  
Idiopathic Nephrotic Syndrome ◽  
Indian Subcontinent ◽  
Minimal Change Nephrotic Syndrome ◽  
Review Article ◽  
Minimal Change ◽  
Historical Background

Nephrotic syndrome (NS) is a common childhood kidney disease characterized by protein leakage from the blood to the urine through the glomeruli, resulting of proteinuria, hypoalbuminemia, generalized edema and hypercholesterolemia. The prevalence of minimal change nephrotic syndrome is higher in Indian subcontinent. Such incidence in Bangladesh is yet unknown. This review article discusses historical background, epidemiology, pathogenesis, pathophysiology and classification of nephrotic syndrome. In this review article focuses have been made on management of children aged between 1 to 18 years with idiopathic nephrotic syndrome. This article also provides information of different guideline recommendations and a brief review of relevant treatment trials related to each recommendation. DOI: http://dx.doi.org/10.3329/bjch.v37i2.17268 BANGLADESH J CHILD HEALTH 2013; VOL 37 (2) : 102-121

scholarly journals Beyond the microscope: interpreting renal biopsy findings in the era of precision medicine

2018 ◽  
Vol 315 (6) ◽  
pp. F1652-F1655
Author(s):  
Serena M. Bagnasco
Keyword(s):  
Renal Disease ◽  
Gold Standard ◽  
New Technologies ◽  
Kidney Biopsy ◽  
Diagnostic Assessment ◽  
Renal Pathology ◽  
Diagnostic Process ◽  
Rapid Progress ◽  
New Knowledge

As rapid progress in science and biotechnology is affecting the practice of renal medicine, increasingly precise diagnostic assessment is needed to select the most effective therapeutic approach for individual patients. The kidney biopsy remains the gold standard for the diagnosis of renal disease, but the field of renal pathology is evolving, classification of renal parenchyma lesions and histopathological diagnostic criteria are undergoing more validation and updates, and new technologies and assays are sought to improve efficiency and accuracy of the diagnostic process. How new knowledge and scientific advances may potentially affect renal pathology is discussed.

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