scholarly journals Immunoglobulin G/albumin staining in tubular protein reabsorption droplets in minimal change disease and focal segmental glomerulosclerosis

2020 ◽  
Author(s):  
Lihong Bu ◽  
James Mirocha ◽  
Mark Haas
Keyword(s):  
Focal Segmental Glomerulosclerosis ◽  
Immunoglobulin G ◽  
Minimal Change Disease ◽  
Minimal Change ◽  
Direct Immunofluorescence ◽  
Histologic Diagnosis ◽  
Not Otherwise Specified ◽  
Segmental Glomerulosclerosis ◽  
Renal Biopsies ◽  
Protein Reabsorption

Abstract Background Some renal biopsies cannot distinguish minimal change disease (MCD) from primary focal segmental glomerulosclerosis (FSGS) because of inadequate sampling and/or a lack of sampled glomeruli with segmental sclerosis. As protein excretion in MCD has been described as being albumin-selective, we examined whether the ratio of immunoglobulin G (IgG)/albumin staining in protein reabsorption droplets (tPRD) might help distinguish MCD from FSGS. Methods Frozen tissue from 144 native renal biopsies from patients with nephrotic syndrome and a diagnosis of MCD or FSGS [73 MCD, 30 FSGS tip variant (FSGS-tip), 38 FSGS-not otherwise specified (FSGS-NOS), 3 FSGS collapsing] was retrospectively stained by direct immunofluorescence for IgG and albumin; none of these samples showed diagnostic lesions of FSGS. IgG and albumin staining of tPRD were graded on a scale of 0 to 3+ based on the distribution and intensity of staining. Results Mean (standard deviation) IgG/albumin staining ratios were 0.186 ± 0.239 for MCD, 0.423 ± 0.334 for FSGS-tip (P = 0.0001 versus MCD) and 0.693 ± 0.297 for FSGS-NOS (P < 0.0001 versus MCD; P = 0.0001 versus FSGS-tip). Of 84 biopsies with a ratio ≤0.33, 63 (75%) showed MCD, whereas among 21 with a ratio of 1.0, all but one showed FSGS (15 FSGS-NOS). Conclusions In summary, IgG/albumin staining in tPRD was correlated with histologic diagnosis in renal biopsies with MCD and FSGS. A ratio of ≤0.33 was associated with MCD, whereas a ratio of 1.0 was most often seen with FSGS-NOS.

scholarly journals RENAL BIOPSY IN PAEDIATRIC POPULATION

1969 ◽  
Vol 3 (2) ◽  
pp. 314-317
Author(s):  
AHMAD ZEB KHAN ◽  
RIAZ GUL ◽  
AZIZ AHMAD
Keyword(s):  
Nephrotic Syndrome ◽  
Renal Biopsy ◽  
Focal Segmental Glomerulosclerosis ◽  
Minimal Change Disease ◽  
Paediatric Population ◽  
Minimal Change ◽  
Segmental Glomerulosclerosis ◽  
Renal Biopsies ◽  
A Prospective Study ◽  
Nephrotic Range Proteinuria

OBJECTIVE: To find out the pattern of glomerulopathies in paediatric population, undergoing renalbiopsy at Khyber Teaching Hospital, Peshawar.METHODS: This was a prospective study carried out at the department of Nephrology at Khyber TeachingHospital, Peshawar from June 2010 till June 2012. Ultrasound guided percutaneous renal biopsies werecarried out in patients with the finding of; 1 ) Nephrotic range proteinuria in children. 2) Non-Nephroticrange proteinuria with evidence of hypertension / haematuria / deranged renal function or active sedimentson urine microscopy. 3) Steroid resistant nephrotic syndrome in children (patients not responding to steroidin eight weeks time) and 4) Children with nephrotic syndrome who were not tolerant of steroid therapy orwere considered for immunosuppressive drugs.RESULT: A total of 155 renal biopsies were done. Out of these 90 were male patients and 65 were females.The most common histopathological lesion among children population was minimal change disease(42.66%) followed by focal segmental glomerulosclerosis (25.33%) and membranous GN (16.0%). Weobserved that nephrotic range proteinuria was most prevalent in minimal change disease and membranousGN followed by focal segmental glomerulosclerosis. While non-nephrotic range proteinuria was mostlyseen in patients with membranoprolifirative GN.CONCLUSION: In paediatric population, minimal change disease is the most common encounteredglomerulopathy, followed by focal segmental glomerulosclerosisand membranous GN.KEY WORDS: Nephrotic syndrome, Renal biopsy, Proteinuria, Glomerulopathy

scholarly journals Clinical manifestations of focal segmental glomerulosclerosis in Japan from the Japan Renal Biopsy Registry: age stratification and comparison with minimal change disease

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Takaya Ozeki ◽  
Shoichi Maruyama ◽  
Toshiyuki Imasawa ◽  
Takehiko Kawaguchi ◽  
Hiroshi Kitamura ◽  
...  
Keyword(s):  
Nephrotic Syndrome ◽  
Renal Biopsy ◽  
Focal Segmental Glomerulosclerosis ◽  
Clinical Diagnosis ◽  
Clinical Characteristics ◽  
Minimal Change Disease ◽  
Multivariable Analysis ◽  
Laboratory Data ◽  
Minimal Change ◽  
Segmental Glomerulosclerosis

AbstractFocal segmental glomerulosclerosis (FSGS) is a serious condition leading to kidney failure. We aimed to investigate the clinical characteristics of FSGS and its differences compared with minimal change disease (MCD) using cross-sectional data from the Japan Renal Biopsy Registry. In Analysis 1, primary FSGS (n = 996) were stratified by age into three groups: pediatric (< 18 years), adult (18–64 years), and elderly (≥ 65 years), and clinical characteristics were compared. Clinical diagnosis of nephrotic syndrome (NS) was given to 73.5% (97/132) of the pediatric, 41.2% (256/622) of the adult, and 65.7% (159/242) of the elderly group. In Analysis 2, primary FSGS (n = 306) and MCD (n = 1303) whose clinical diagnosis was nephrotic syndrome (NS) and laboratory data were consistent with NS, were enrolled. Logistic regression analysis was conducted to elucidate the variables which can distinguish FSGS from MCD. On multivariable analysis, higher systolic blood pressure, higher serum albumin, lower eGFR, and presence of hematuria associated with FSGS. In Japanese nationwide registry, primary FSGS patients aged 18–64 years showed lower rate of NS than those in other ages. Among primary nephrotic cases, FSGS showed distinct clinical features from MCD.

Pathogenesis of proteinuria in minimal change disease and focal segmental glomerulosclerosis

2018 ◽  
Author(s):  
Patrick Niaudet ◽  
Alain Meyrier
Keyword(s):  
Serum Albumin ◽  
Focal Segmental Glomerulosclerosis ◽  
Minimal Change Disease ◽  
Minimal Change ◽  
Slit Diaphragm ◽  
Segmental Glomerulosclerosis ◽  
Podocyte Loss ◽  
Glomerular Filtrate

It is now well established that the podocyte, and in particular the slit diaphragm structure, are critical to the barrier to serum albumin entering glomerular filtrate in large quantities. In minimal change disease there is proteinuria without podocyte death, whereas in focal segmental glomerulosclerosis there is not only podocyte dysfunction but also podocyte loss.

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