scholarly journals Oxford MEST classification in Iranian patients with IgA nephropathy, with regards to extracapillary proliferation; a single center experience

2020 ◽  
Vol 5 (1) ◽  
pp. e14-e14
Author(s):  
Mohsen Akhavansepahi ◽  
Maryam Rafieyan ◽  
Hamid Nasri

Introduction: IgA nephropathy is the most common glomerulonephritis in the world. Objectives: In this study we aimed to find the relationship between morphological lesions of Oxford classification for IgA nephropathy with clinical findings and some laboratory data. Patients and Methods: All kidney biopsy conducted from 2009 to 2019 conducted in medical centers and were sent to a reference laboratory in Isfahan. All kidney biopsies included two samples for immunofluorescence and light microscopy. After definitive diagnosis of IgAN (IgA nephropathy), the slides were examined to classify the disease based on the Oxford-MEST (M; mesangial hypercellularity, E; endocapillary hypercellularity, S; segmental glomerulosclerosis, and T; tubular atrophy/interstitial fibrosis and also C; crescent) classification. Results: Our study on 238 biopsy proven IgA nephropathy patients showed that 78 patients (32.8%) were male. Mean ± SD of age individuals was 38.00 ±13.68 years. The mean± SD of serum creatinine level was 1.42 ± 0.79 mg/dL and the mean ± SD of proteinuria was 1780.94 ± 1168.75 mg/d. Our study showed no significant association between M, E and S variables with patients’ age. However, a statistically significant relationship between T variable and patients’ age (P=0.028) was detected. Furthermore, morphologic variables of M, E and S were not significantly associated with proteinuria while T variable was positively associated with the quantity of proteinuria (P=0.021). Conclusion: The association of tubular atrophy/interstitial fibrosis (T variable) with quantity of proteinuria showed significance of interstitial lesion on the prognosis IgA nephropathy.

2018 ◽  
Vol 16 ◽  
pp. 205873921880268
Author(s):  
Qijun Wan ◽  
Yongcheng He ◽  
Hongtao Chen ◽  
Hongping Liu ◽  
Saodong Luan ◽  
...  

IgA nephropathy (IgAN) is now widely recognized as the most common primary glomerulonephritis worldwide, especially in China. The immunosuppressive treatment option for IgAN is still controversial. Previously, we proved that mycophenolate mofetil (MMF; Shanghai Roche, China) combined with low-dose prednisone was an effective and safe option for biopsy-proven mild to moderate IgAN patients in a short term of follow-up. This article we first reported the safety and efficacy of this regimen in a 42-year-old male biopsy-proven advanced 10-year follow-up IgAN case (Lee’s Class V; the patient was biopsied 10 years ago, so the Oxford Mesangial hypercellularity Endocapillary hypercellularity Segmental glomerulosclerosis Tubular atrophy/interstitial fibrosis (MEST) classification was not used). The mycophenolate and prednisone were only given for a limited time. The other main medications included calcium channel blockers and antiplatelet agents. Clinical and laboratory indexes were aperiodic assessed during the 10-year follow-up. The serum creatinine decreased from 356 to around 210 μmol/L and urine excretion protein reduced from 3.4 g/d to about 0.5 g/d after 6 months of the initiation of this regimen, respectively. These perfect treatment effects could maintain well during the whole follow-up period. No obvious complications were observed.


2021 ◽  
Vol 25 (3) ◽  
pp. 61-67
Author(s):  
I. A. Kazyra ◽  
А. V. Sukalo

The aim of the study was to analyze the rate of progression of IgA nephropathy (IgAN) in childhood and factors affecting prognosis. The study included 54 children with a morphologically verified diagnosis of IgAN (36 boys, 18 girls) aged 2 to 17 years, who were under observation in the nephrology department of the "2nd Children's City Clinical Hospital" of the National Center for Pediatric Nephrology and Renal Replacement therapy in Minsk in the period from 2013 to 2020. The participation of deGal-IgA1, markers of T- and B-lymphocyte activation, pro-inflammatory and pro-fibrotic molecules in the development of the disease has been shown. AG was registered in 18 of 54 (33,3 %) children, nocturnal AG in 11/43 (23,4 %), signs of cardiac remodeling in 10/49 (20,4 %). A decrease in the level of adiponectin, vitamin D, an increase in obestatin in comparison with healthy children makes it possible to attribute patients with IgAN to the risk group for the development of cardiovascular disorders, which implies the need for timely monitoring and correction. In most cases in childhood IgAN is characterized by a benign course without signs of progression. The prognostic significance of highly active nephritis, impaired renal function at the onset of the disease, T1 (tubular atrophy / interstitial fibrosis in 25–50 %) by MEST, proteinuria over 0,8 g/24 hours as risk factors for progression was shown.


2020 ◽  
Vol 9 (11) ◽  
pp. 3549
Author(s):  
Jin Sug Kim ◽  
Hyeon Seok Hwang ◽  
Sang Ho Lee ◽  
Yang Gyun Kim ◽  
Ju-Young Moon ◽  
...  

New biomarkers of IgA nephropathy (IgAN) are needed for non-invasive diagnosis and appropriate treatment. There is emerging evidence that galactose deficient IgA1 (Gd-IgA1) is a pivotal molecule in the pathogenesis of IgAN. However, few studies have investigated the role of Gd-IgA1 as a biomarker in IgAN. In this study, we investigated the clinical relevance of serum Gd-IgA1 levels in patients with IgAN. Two hundred and thirty biopsy-proven IgAN patients, 74 disease controls (patients with non-IgAN nephropathy), and 15 healthy controls were enrolled in this study. Levels of serum Gd-IgA1 were measured using an ELISA kit in serum samples obtained the day of renal biopsy. We compared levels of serum Gd-IgA1 according to the type of glomerular disease and analyzed the association between Gd-IgA1 levels and clinical and pathological parameters in patients with IgAN. We then divided IgAN patients into two groups according to Gd-IgA1 level and investigated the predictive value of Gd-IgA1 for progression of chronic kidney disease (CKD). Serum Gd-IgA1 levels were significantly higher in IgAN patients than disease controls and healthy controls. In patients with IgAN, serum Gd-IA1 levels were significantly correlated with estimated glomerular filtration rate, serum IgA level, and tubular atrophy/interstitial fibrosis. CKD progression was more frequent in IgAN patients with higher serum Gd-IgA1 levels than in those with lower serum Gd-IgA1 levels. Cox proportional hazard models showed that high GdIgA1 level was an independent risk factor for CKD progression after adjusting for several confounders. Our results suggest that serum Gd-IgA1 level is a useful diagnostic and prognostic marker in IgAN patients. Further studies with a larger sample size and longer follow-up duration are needed.


2016 ◽  
Vol 44 (6) ◽  
pp. 481-492 ◽  
Author(s):  
Jin Ho Hwang ◽  
Jung Pyo Lee ◽  
Clara Tammy Kim ◽  
Seung Hee Yang ◽  
Jin Hyuk Kim ◽  
...  

Background: Periostin is a matricellular protein and plays a vital role in tissue regeneration, fibrosis and wound healing. However, data about its significance in nephrology are limited. We investigated the correlation between urinary periostin excretion and its clinical significance including renal histologic findings and prognosis in IgA nephropathy (IgAN). Methods: Of 399 patients from a glomerulonephritis cohort recruited between January 2009 and December 2014, 314 were enrolled. Serum and urine periostin (uPOSTN) were measured using enzyme-linked immunosorbent assay. We divided the patients into 3 groups by uPOSTN/creatinine (uPOSTN/Cr): group 1 (undetectable), group 2 (lower than the median) and group 3 (higher than the median). Results: The uPOSTN level was correlated with pathologic classifications and both initial and final IDMS-MDRD estimated glomerular filtration rates (eGFRs; p < 0.001). Histologically, group 3 patients were correlated with severe interstitial fibrosis/tubular atrophy (p = 0.004), interstitial inflammation (p = 0.007), hyaline arteriolosclerosis (p = 0.001) and glomerular sclerosis (p < 0.001). A higher initial uPOSTN/Cr level was associated with a greater decline in eGFR during follow-up (p = 0.043 when initial eGFR ≥60; p = 0.025 when eGFR <60 ml/min/1.73 m2), and the renal outcomes with end-stage renal disease (ESRD; p = 0.003), ESRD and/or eGFR decrease of >30% (p = 0.033) and ESRD and/or eGFR decrease of >50% (p = 0.046) occurred significantly more in group 3. In multivariate analysis, uPOSTN group 3 (hazards ratio 2.839, 95% CI 1.013-7.957; p = 0.047) was independently associated with ESRD in IgAN patients. Conclusion: uPOSTN/Cr value at initial diagnosis correlated with renal fibrosis and predicted the renal outcomes in patients with IgAN. It could be a promising urinary biomarker for renal fibrosis.


2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Shruti Gupta ◽  
Ivy Rosales ◽  
David Wojciechowski

Background. Calcineurin inhibitors are associated with chronic nephrotoxicity, manifesting as interstitial fibrosis/tubular atrophy (IF/TA) and arteriolar hyalinosis. Conversion from tacrolimus to belatacept may be one strategy to preserve renal function. Methods. We conducted a retrospective review of renal transplant patients followed at our institution who were converted to belatacept and found to have chronic tacrolimus toxicity on biopsy. The primary outcome was eGFR at conversion as compared to eGFR at 3, 6, 12, and 24 months after conversion. We also assessed incidence of infection and rates of allograft survival at 1 year. Results. The average time between transplant and conversion was 11.9 years. There was no decrease in eGFR at any postconversion time point as compared with preconversion. The mean eGFR at time of preconversion was 32.9 mL/min, as compared with 35.6 mL/min at 3 months (p=0.09), 34.1 mL/min at 6 months (p=0.63), 34.9 mL/min at 12 months (p=0.57), and 39.6 mL/min at 24 months after conversion (p=0.92). Four of 7 patients had increases in their eGFR after conversion. All grafts were functioning at 1 year after conversion. Conclusion. While this study was limited by a small number of patients, belatacept conversion stabilized eGFR at all time points in patients with late allograft function due to chronic tacrolimus toxicity, with a trend towards increased eGFR at 3 months.


2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Qin Xue ◽  
Guang Li Zhang ◽  
Zebo Tian

Abstract Background and Aims Renal involvement is one of the most common extra-articular complications caused by ankylosing spondylitis (AS). The main pathological manifestation is secondary IgA nephropathy(SIgAN) in Chinese AS patients. The difference between SIgAN and primary IgAN (PIgAN) remains unclear due to the lack of cases. Therefore, the aim of this retrospective study was to compare the clinical and pathological features of SIgAN of AS (SIgAN-AS) and PIgAN, to detect the pathogenesis of SIgAN Method Clinical characteristics and pathological data were collected in patients who were diagnosed with IgAN by renal biopsy in our hospital from Jan 2008 to Oct 2018. Patients with SIgAN-AS were recruited by the ratio 1:5 of patients with primary IgAN as the control group in the study. Fifteen patients with SIgAN-AS and Seventy-five patients with PIgAN were enrolled in this retrospective study. Results There were 15 cases in AS group, including 13 male and 2 female. The cohort of 75 patients with PIgAN included 34 male and 41 female. There were more males in AS group 13/15 (86.7%) vs 37/75(49.3%) ,P &lt; 0.05. Compared with PIgAN patients, SIgAN-AS patients had higher incidences of hematuria( 13/15(86.7%)vs 44/75 (58.7%) , P &lt; 0.05), lower levels of 24-hour urinary protein(0.85±0.68 vs 1.57±1.54g, P &lt; 0.05), but higher levels of eGFR (CKD-MDRD formula) (117.60±37.33 vs 85.35±31.36, P &lt; 0.05),eGFR (CKD-EPI formula) (128.01±41.58 vs 92.75±36.09, P &lt; 0.05), Albumin (44.67±3.48 vs 41.09±7.07 g/L, P &lt; 0.05) ESR (43.20 ±33.94 vs 18.79±16.26mm/h, P &lt; 0.001) , and CRP (21.19±30.61 vs 2.11±4.58mg/L, P &lt; 0.001) . From the perspective of renal pathology of PIgAN, SIgA-AS patients had fewer incidences of renal tubular atrophy / interstitial fibrosis of nephropathy (P &lt;0.05). The immunohistostaining analysis showed higher incidences of dominant deposits of single IgA in mesangial cell area (P &lt; 0.05). Conclusion Patients with SIgAN-AS is more common in male and display a milder progression than those with primary IgAN. Majority of the SIgAN-AS can be improved with early intervention.


2019 ◽  
Author(s):  
Heyan Wu ◽  
Zhengkun Xia ◽  
Chunlin Gao ◽  
Pei Zhang ◽  
Xiao Yang ◽  
...  

Abstract Background The 2016 Oxford Classification's MEST-C scoring system predicts outcomes in adults with IgA nephropathy, but it lacks large cohort validation in children with IgAN in China. We would like to verify that the MEST-C score can be used to predict the renal outcome of children with IgAN.Methods A retrospective cohort analysis of data from 1243 Chinese children with IgAN who underwent renal biopsy in Jinling Hospital from 2000 to 2017 was performed and investigated with glomerular filtration rate (eGFR),24h urine proteinuria(24h-UP)and blood pressure(BP) at biopsy and during follow-up.The renal pathology was based on Oxford Classification of IgAN.Results We confirm that BP was significantly correlated with mesangial hypercellullarity(M), endocapillary hypercellularity(E), tubular atrophy/ interstitial fibrosis(T) and crescents (C) .There was a significant correlation between eGFR and segmental glomerulosclerosis(S), T and C .24h-UP and all pathological indexes were significantly correlated. S and T were shown to be independent risk factors associated with renal outcomes in our group. Kaplan-Meier revealed that M [log-rank, chi-squared(χ2)=14.679, P=0.000 ], S(χ2=31.508,P=0.000),T (χ2=78.893, P=0.000),C(χ2=16.603, P=0.000) were associated with renal outcome.In univariate analyses, M(HR 2.167, 95% CI, 1.445~3.251, P = 0.000),S(HR 3.081, 95% CI, 2.038~4.658, P = 0.000), T(HR 7.911, 95% CI, 4.670~13.400,P = 0.000) and C(HR3.346, 95% CI, 1.818~6.156,P = 0.000) lesions were significant predictors of renal outcome. In a multivariate analysis, only S(HR 2.742, 95% CI, 1.805~4.164,P = 0.000) and T(HR 6.633, 95% CI, 3.897~11.289,P = 0.000)were shown to be independent risk factors .Conclusions We found that S and T lesions were valid in predicting a poor outcome in our group.E, S, T and C lesion were important basis for doctors to choose glucocorticoids and immunosuppressive agents in the treatment of IgAN, while T and C lesion were often the basis for doctors to use RAS blockers cautiously.


2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Sheila Bermejo Garcia ◽  
Clara García Carro ◽  
Irene Agraz ◽  
Richard Mast ◽  
Ander Vergara ◽  
...  

Abstract Background and Aims Kidney biopsy (KB) is the “gold standard” to diagnose nephropathies in our renal patients and it is a procedure with a low rate of complications. Obtaining material for kidney biopsy biobank requires the extraction of one more renal cylinder. The main objective of our study is to analyze the characteristics of a cohort of patients with KB, the safety of the establishment of a renal biopsy biobank with the objective to obtain at least one core of kidney biopsy for research purposes. Method Observational and prospective study of kidney biopsies performed in our center from January 2019 and 2020. We started a collection of kidney biopsy samples to obtain a biobank at January 2019. Therefore, in patients who accepted, instead of two cylinders, three cylinders were obtained during the procedure when possible. Clinical and laboratory data of the patients were reviewed and we looked for risk factors for complications, including the number of cylinders obtained in the procedure. Results We reviewed a cohort of 221 patients in whom we performed a kidney biopsy at our hospital. Eight patients (3.6%) underwent trans-jugular renal biopsy, which we have eliminated from the analysis. Of the remaining 213, 126 (59.2%) were men, the mean age was 56.8 (± 16.9) years, 122 (57.3%) patients had hypertension, 46 (23%) were diabetics, 14 (6.5%) were under anticoagulant treatment and 35 (16.4%) were under antiplatelet treatment. Regarding the analytical values, the mean creatinine was 2.22 (± 1.9) mg / dl, protein / creatinine urine ratio 1119.6 [448.3-2957.9] mg / gr, 44.6% (n = 95) had microhematuria, the median hemoglobin pre-KB was 12.1 (± 2.3) g / dL, 254380 (± 8873) platelets, INR 0.98 (± 0.09), prothrombin time of 11.8 (± 1.16) seconds, systolic blood pressure was 135 (± 24.3) mmHg, diastolic blood pressure was 76 (± 15.5) mmHg. The median kidney size was 11 (± 1.23) cm and cortical size was 1.7 (± 0.65) cm. In 113 (53.1%) patients the right kidney was biopsied. 69.5% (n = 148) of the patients 3 renal sample cylinders were obtained, 27.2% (n = 58) 2 cylinders and in 3.3% (n = 7) one cylinder. We did not found differences regarding of renal and cortical size in the patients according to the number of cylinders obtained. We observed that patients in whom 3 cylinders were had a higher percentage of renal biopsy in the left kidney (p = 0.028). We evidenced minor complications in 13.6% (n = 29) and 3.3% (n = 7) major complications. Patients with complications in KB were older (p = 0.039) and had a higher INR (p = 0.031). Patients with one renal cylinder Jin KB, presented a higher percentage of complications with 57.1% vs 17.2% two cylinders and 14.9% with three cylinder (p =0.014). We did not find differences in terms of complications according to the laterality of kidney biopsy (right vs left). Conclusion Kidney biopsy is a procedure with a low complication rate. Obtaining three renal biopsy cylinders for biobank has not shown an increase in the rate of complications, which remains similar than previously published reports. Our results suggest that the complications are observed mainly in the first and/or second cylinder, and in that case the third core is not performed.


2019 ◽  
Vol 23 (6) ◽  
pp. 45-60
Author(s):  
V. A. Dobronravov ◽  
T. O. Muzhetskaya ◽  
D. I. Lin ◽  
Z. Sh. Kochoyan

 AIM. The analysis of incidence, clinical and morphological manifestations, and the prognosis of IgA nephropathy in the Russian population.PATIENTS AND METHODS. Six hundred cases with primary IgA nephropathy (IgAN) from 1999 to 2019 were enrolled in the single-center retrospective study. Demographic and clinical parameters, morphrology data, and the treatment were analyzed. Three hundred forty seven patients were included in follow-up study. The following outcomes were evaluated: the occurrence of complete (PR) or partial remission (CR), death from all causes, the need for renal replacement therapy (RRT). The composite endpoint (RRT or eGFR decrease ≥ 50 % from the time of biopsy) was used to evaluate the risk of IgAN progression and associated factors.RESULTS. The period-average incidence of IgAN cases was 20.5 % of all indication biopsies and 31.7 % of primary immune glomerulopathies (with gradual increase to 41,5 % in last 5 years). At the time of the kidney biopsy, the proteinuria was 2.20 (1.10; 4.40) g/24h, eGFR – 69 ± 32 ml / min / 1.73 m2. Proportions of cases with arterial hypertension and with eGFR <60 ml / min / 1.73 m2 were 75 % and 36 %, respectively. The prevalence of histological changes in accordance with the MEST-C classification was as follows: M1 – 40.5 %, E1 -22.9 %, S1-70.2 %, T1-22 %, T2 – 9 %, C1-16.7 %, C2 – 4.4 %. Combined deposits of IgA and IgM (71.1 % of cases) were more frequent compared to IgA and IgG (9,6 %). In the followup period (27 (11; 61) month), 6 deaths from all causes were registered (1.7 %). The 10-year cumulative renal survival was 75 % (by dialysis) and 55 % (by composite endpoint). PR registered in 26 % of cases, CR – 24 %. PR / CR was more frequent in patients who received immunosuppression compared with patients on renin-angiotensin system blockers only (60 % vs. 40 %, p = 0.001). In multivariable Cox regression the independent factors associated with the risk of IgAN progression were: male gender, a younger age, higher blood pressure and hematuria, lower eGFR, interstitial fibrosis/ tubular atrophy (≥50 %), peritubular capillaritis and the presence of any crescents. Compared to the cohorts of other ethnic or geographical affiliation, analyzed IgAN cases were found to have more severe clinical and morphological presentations and faster progression rate.CONCLUSION. While being the most common glomerulopathy, IgAN in the Russian population has more pronounced clinical and morphological presentations and an unfavorable prognosis.


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