scholarly journals Histopathological Classification—A Prognostic Tool for Rapidly Progressive Glomerulonephritis

Medicina ◽  
2018 ◽  
Vol 54 (2) ◽  
pp. 17 ◽  
Author(s):  
Marta Kantauskaitė ◽  
Agnė Laučytė-Cibulskienė ◽  
Marius Miglinas
Keyword(s):  
Cox Regression ◽  
Rapidly Progressive Glomerulonephritis ◽  
Glomerular Sclerosis ◽  
Histopathological Classification ◽  
Prognostic Effect ◽  
Autoimmune Antibodies ◽  
Renal Biopsies ◽  
One Year ◽  
Stage Renal Disease ◽  
End Stage

Background: Recently proposed histopathological classification may predict patient outcome in pauci-immune glomerulonephritis. This study sought to prove that the prognostic effect could be extended to all types of rapidly progressive glomerulonephritis. Methods: Retrospective analysis of patients diagnosed with rapidly progressive glomerulonephritis between April 1999 and August 2015 was performed. Epidemiological and clinical data were collected from medical records. The descriptions of renal biopsies were reviewed and classified into focal, sclerotic, crescentic and mixed class according to classification proposed by Berden et al. The study end points were end stage renal disease (ESRD) or death. Survival analyses were modelled using Cox regression. Results: 73 renal biopsies with diagnosis of rapidly progressive glomerulonephritis were included in the study. 25 (34.2%), 16 (21.9%), 24 (32.9%) and 8 (11%) patients were assigned to focal, crescentic, mixed and sclerotic class, respectively. Thirty-two (42.5%) patients were anti-neutrophil cytoplasmic antibody (ANCA) negative, of which eight (10.9%) were anti–glomerular basement membrane antibody (anti–GBM) positive and 24 (32.8%) were negative for autoimmune antibodies. Six (8.2%) patients died within one year. Among patients who survived, median change in estimated glomerular filtration rate (eGFR) values were: −10.5 mL/min in focal, 4.2 mL/min in crescentic, −4.3 mL/min in mixed and 4.1 mL/min in sclerotic group, p > 0.05. In the Cox regression model, there was no significant predictor of patient survival whereas the sclerotic group (HR 3.679, 95% CI, 1.164–11.628, p < 0.05) and baseline eGFR of <15 mL/min (HR 4.832, 95% CI, 1.55–15.08, p < 0.01) had an unfavorable effect for renal survival. Conclusions: Predominant glomerular sclerosis and low eGFR at baseline are associated with higher risk of ESRD in cases with crescentic glomerulonephritis. Therefore, despite the origin of injury, histological classification might aid in prediction of patient outcomes in rapidly progressive glomerulonephritis.

P0476THE ABSENCE OF REMISSION PREDICTS MORTALITY IN RAPIDLY PROGRESSIVE GLOMERULONEPHRITIS

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Leydy Yohana Gil Giraldo ◽  
Patricia Muñoz Ramos ◽  
Antonio Carlos Fernández Perpen ◽  
Borja Quiroga
Keyword(s):  
Renal Function ◽  
Associated Factors ◽  
Cox Regression ◽  
Independent Predictor ◽  
Rapidly Progressive Glomerulonephritis ◽  
Epidemiological Data ◽  
Induction Treatment ◽  
Stage Renal Disease ◽  
End Stage

Abstract Background and Aims Rapidly progressive glomerulonephritis (RPGN) encompasses a group of diseases with a common histology in which the absence of treatment progress to end-stage renal disease. Induction treatment includes the use of immunosuppressants, and in certain cases, plasmapheresis. The final objective of this study was to determine the long-term prognosis of the RPGN. Method A retrospective observational study was conducted, including patients diagnosed with RPGN between 2004 and 2019. Baseline epidemiological data and comorbidities were collected, as well as renal function and treatment at the time of diagnosis. During the follow up [median of 42 (5-101 months)], we analyzed the evolution of renal function, mortality and associated factors. Results Forty-three patients (65% women) were included, with a mean age of 70 ± 16 years. At the time of diagnosis, mean creatinine was 4.8 ± 2.6 mg/dl, proteinuria 1094 ± 856 mg/day and 37 patients (86%) presented hematuria Thirty-one patients (72%) presented positivity for antibodies against the neutrophil cytoplasm, 7 (16%) for antibodies against the glomerular basement membrane and 5 (12%) for both. Regarding the induction treatment, 41 patients received cyclophosphamide and corticoids and two patients received rituximab. Seventeen (31%) plasmapheresis were performed with a median of 7 (6-7 sessions). At 6 months, 55% of the patients presented remission (15 patients complete remission and 8 patients partial remission). The median creatinine was 1.9 (1.2-3.1) mg/dl and the proteinuria was 380 (85 -542) mg/day (p&lt;0.0001 compared to the initial data). At that time, 21% (9) of the patients needed dialysis. Associated factors with the absence of remission were diabetes mellitus (p= 0.016), creatinine at diagnosis (p= 0.002) and the need for hemodialysis at admission (p&lt;0.0001). The only independent predictor of remission was initial creatinine (HR 0.5 [0.3-0.9], p= 0.048). During follow up, renal function improved with a median of creatinine at 18 months of 1.6 (1.2 – 2.9) mg/dl and 1.5 (0.8-2.4) mg/dl at the end. Twelve (28%) patients died during follow up. Associated factors with mortality were age (p=0.02), the need for hemodialysis (p=0.015) and the absence of remission at 6 months (p=0.012) (figure 1). An adjusted model using Cox regression demonstrated that the absence of remission was an independent predictor of mortality (HR 0.2 [0.5-0.8], p= 0.032). Conclusion Initial renal function and 6-month remission predicts mortality in the RPGN.

Increased urinary miR-196a level predicts the progression of renal injury in patients with diabetic nephropathy

2018 ◽  
Vol 35 (6) ◽  
pp. 1009-1016 ◽  
Author(s):  
Yu An ◽  
Changming Zhang ◽  
Feng Xu ◽  
Wei Li ◽  
Caihong Zeng ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Diabetic Nephropathy ◽  
Renal Injury ◽  
Cox Regression ◽  
Interstitial Fibrosis ◽  
Glomerular Sclerosis ◽  
Tubular Atrophy ◽  
Cox Regression Analysis ◽  
Stage Renal Disease ◽  
End Stage

Abstract Background Recent data suggest that miR-196a is predominantly expressed in the kidney and plays an inhibitory role in the progress of renal interstitial fibrosis (IF). However, the predictive value of miR-196a in diabetic nephropathy (DN) remains unknown. We validated the role of urinary miR-196a in the progression of renal injury in a cohort of patients with type 2 diabetes mellitus. Methods Our study included 209 patients with biopsy-proven DN. The mean follow-up time was 54.03 ± 32.94 months. Histological lesions were assessed using the pathological classification established by the Renal Pathology Society. Percentages of IF and tubular atrophy were assessed using the Aperio ScanScope system. We measured the correlation of urinary miR-196a with clinical and pathological parameters using the Spearman’s correlation test. The influence of urinary miR-196a on renal outcomes was assessed using Cox regression analysis. Results Urinary miR-196a levels correlated positively with proteinuria (ρ = 0.385, P &lt; 0.001), duration of diabetes mellitus (ρ = 0.255, P &lt; 0.001) and systolic blood pressure (ρ = 0.267, P &lt; 0.001). The baseline estimated glomerular filtration rate (eGFR) and hemoglobin level showed a negative correlation with urinary miR-196a (ρ = −0.247, P &lt; 0.001 and ρ = −0.236, P = 0.001, respectively). Pathologically, urinary miR-196a levels correlated with glomerular sclerosis and IF in patients with DN. Urinary miR-196a was significantly associated with progression to end-stage renal disease [hazard ratio (HR) 2.03, P &lt; 0.001] and a 40% reduction of baseline eGFR (HR 1.75, P = 0.001), independent of age, gender, body mass index, mean arterial pressure and hemoglobinA1c level. However, urinary miR-196a did not improve predictive power to proteinuria and eGFR in DN patients. Conclusions Increased urinary miR-196a was significantly associated with the progression of renal injury and might be a noninvasive prognostic marker of renal fibrosis in DN patients.

scholarly journals Application of regularized regression to identify novel predictors of mortality in a cohort of hemodialysis patients

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Stanislas Werfel ◽  
Georg Lorenz ◽  
Bernhard Haller ◽  
Roman Günthner ◽  
Julia Matschkal ◽  
...  
Keyword(s):  
Statistical Learning ◽  
Cox Regression ◽  
Serum Levels ◽  
Hemodialysis Patients ◽  
Derivation Cohort ◽  
Predictors Of Mortality ◽  
Stage Renal Disease ◽  
End Stage ◽  
Study Participants ◽  
Related Mortality

AbstractCohort studies often provide a large array of data on study participants. The techniques of statistical learning can allow an efficient way to analyze large datasets in order to uncover previously unknown, clinically relevant predictors of morbidity or mortality. We applied a combination of elastic net penalized Cox regression and stability selection with the aim of identifying novel predictors of mortality in a cohort of prevalent hemodialysis patients. In our analysis we included 475 patients from the “rISk strAtification in end-stage Renal disease” (ISAR) study, who we split into derivation and confirmation cohorts. A wide array of examinations was available for study participants, resulting in over a hundred potential predictors. In the selection approach many of the well established predictors were retrieved in the derivation cohort. Additionally, the serum levels of IL-12p70 and AST were selected as mortality predictors and confirmed in the withheld subgroup. High IL-12p70 levels were specifically prognostic of infection-related mortality. In summary, we demonstrate an approach how statistical learning can be applied to a cohort study to derive novel hypotheses in a data-driven way. Our results suggest a novel role of IL-12p70 in infection-related mortality, while AST is a promising additional biomarker in patients undergoing hemodialysis.

scholarly journals Vasculitis ANCA: Alternativas de tratamiento y las expectativas en los pacientes

2021 ◽  
pp. 1-2
Author(s):  
Carolina Aguilar-Martínez 
Keyword(s):  
Systematic Review ◽  
Cox Regression ◽  
Meta Analysis ◽  
Significant Risk ◽  
Limiting Factor ◽  
Significant Survival ◽  
Stage Renal Disease ◽  
End Stage ◽  
Immunosuppression Therapy

<b>Background:</b> The benefits of treating anti-neutrophil cytoplasmic autoantibody-associated vasculitis (AAV) in advancing age remains unclear with most published studies defining elderly as ≥65 years. This study aims to determine outcomes of induction immunosuppression in patients aged ≥75 years. <b>Methods:</b> A cohort of patients aged ≥75 years with a diagnosis of AAV between 2006 and 2018 was constructed from 2 centres. Follow-up was to 2 years or death. Analysis included multivariable Cox regression to compare mortality and end-stage renal disease (ESRD) based on receipt of induction immunosuppression therapy with either cyclophosphamide or rituximab. A systematic review of outcome studies was subsequently undertaken amongst this patient group through Pubmed, Cochrane and Embase databases from inception until October 16, 2019. <b>Results:</b> Sixty-seven patients were identified. Mean age was 79 ± 2.9 years and 82% (<i>n</i> = 55) received induction immunosuppression. Following systematic review, 4 studies were eligible for inclusion, yielding a combined total of 290 patients inclusive of our cohort. The aggregated 1-year mortality irrespective of treatment was 31% (95% CI 25–36%). Within our cohort, induction immunosuppression therapy was associated with a significantly lower 2-year mortality risk (hazard ratio [HR] 0.29 [95% CI 0.09–0.93]). The pooled HR by meta-analysis confirmed this with a significant risk reduction for death (HR 0.31 [95% CI 0.16–0.57], <i>I</i><sup>2</sup> = 0%). Treated patients had a lower pooled rate of ESRD, but was not statistically significant (HR 0.71 [95% CI 0.15–3.35]). <b>Conclusion:</b> This meta-analysis suggests that patients ≥75 years with AAV do benefit from induction immunosuppression with a significant survival benefit. Age alone should not be a limiting factor when considering treatment.

scholarly journals Real-world evidence and optimization of vocal dysfunction in end-stage renal disease patients with secondary hyperparathyroidism

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Geng-He Chang ◽  
Fong-Fu Chou ◽  
Ming-Shao Tsai ◽  
Yao-Te Tsai ◽  
Ming-Yu Yang ◽  
...  
Keyword(s):  
Renal Disease ◽  
Secondary Hyperparathyroidism ◽  
Real World ◽  
End Stage Renal Disease ◽  
Cox Regression ◽  
Electrolyte Imbalance ◽  
Research Database ◽  
Cox Regression Analysis ◽  
Stage Renal Disease ◽  
End Stage

AbstractPatients with end-stage renal disease (ESRD) may demonstrate secondary hyperparathyroidism (SHPT), characterized by parathyroid hormone oversecretion in response to electrolyte imbalance (e.g., hypocalcemia and hyperphosphatemia). Moreover, this electrolyte imbalance may affect vocal cord muscle contraction and lead to voice change. Here, we explored the effects of SHPT on the voices of patients with ESRD. We used data of 147,026 patients with ESRD from the registry for catastrophic illness patients, a sub-database of Taiwan National Health Insurance Research Database. We divided these patients into 2 groups based on whether they had hyperparathyroidism (HPT) and compared vocal dysfunction (VD) incidence among them. We also prospectively included 60 ESRD patients with SHPT; 45 of them underwent parathyroidectomy. Preoperatively and postoperatively, voice analysis was used to investigate changes in vocal parameters. In the real-world database analysis, the presence of HPT significantly increased VD incidence in patients with ESRD (p = 0.003): Cox regression analysis results indicated that patients with ESRD had an approximately 1.6-fold increased VD risk (p = 0.003). In the clinical analysis, the “jitter” and “shimmer” factors improved significantly after operation, whereas the aerodynamic factors remained unchanged. In conclusion, SHPT was an independent risk factor for VD in patients with ESRD, mainly affecting their acoustic factors.

Kidney transplantation in the extremely elderly from extremely aged deceased donors: a kidney for each age

2020 ◽  
Vol 35 (4) ◽  
pp. 687-696
Author(s):  
Jimena Cabrera ◽  
Mario Fernández-Ruiz ◽  
Hernando Trujillo ◽  
Esther González ◽  
María Molina ◽  
...  
Keyword(s):  
Kidney Transplantation ◽  
Graft Survival ◽  
Cox Regression ◽  
Patient Survival ◽  
Incidence Rates ◽  
Allocation Policy ◽  
Recipient Age ◽  
Deceased Donors ◽  
Stage Renal Disease ◽  
End Stage

Abstract Background Advances in life expectancy have led to an increase in the number of elderly people with end-stage renal disease (ESRD). Scarce information is available on the outcomes of kidney transplantation (KT) in extremely elderly patients based on an allocation policy prioritizing donor–recipient age matching. Methods We included recipients ≥75 years that underwent KT from similarly aged deceased donors at our institution between 2002 and 2015. Determinants of death-censored graft and patient survival were assessed by Cox regression. Results We included 138 recipients with a median follow-up of 38.8 months. Median (interquartile range) age of recipients and donors was 77.5 (76.3–79.7) and 77.0 years (74.7–79.0), with 22.5% of donors ≥80 years. Primary graft non-function occurred in 8.0% (11/138) of patients. Cumulative incidence rates for post-transplant infection and biopsy-proven acute rejection (BPAR) were 70.3% (97/138) and 15.2% (21/138), respectively. One- and 5-year patient survival were 82.1 and 60.1%, respectively, whereas the corresponding rates for death-censored graft survival were 95.6 and 93.1%. Infection was the leading cause of death (46.0% of fatal cases). The occurrence of BPAR was associated with lower 1-year patient survival [hazard ratio (HR) = 4.21, 95% confidence interval (CI) 1.64–10.82; P = 0.003]. Diabetic nephropathy was the only factor predicting 5-year death-censored graft survival (HR = 4.82, 95% CI 1.08–21.56; P = 0.040). Conclusions ESRD patients ≥75 years can access KT and remain dialysis free for their remaining lifespan by using grafts from extremely aged deceased donors, yielding encouraging results in terms of recipient and graft survival.

scholarly journals The Profile of Timing Dialysis Initiation in Patients with End-stage Renal Disease in China: A Cohort Study

2020 ◽  
Vol 45 (2) ◽  
pp. 180-193
Author(s):  
Ying Liu ◽  
Luping Wang ◽  
Xianfeng Han ◽  
Yang Wang ◽  
Xuefeng Sun ◽  
...  
Keyword(s):  
Renal Disease ◽  
End Stage Renal Disease ◽  
Cox Regression ◽  
Mainland China ◽  
Dialysis Initiation ◽  
Significant Difference ◽  
Initiation Of Dialysis ◽  
Stage Renal Disease ◽  
End Stage ◽  
The Relationship

Background: Hemodialysis is the main approach for renal replacement therapy in patients with end-stage renal disease (ESRD) in China. The timing of dialysis initiation is one of the key factors influencing patient survival and prognosis. Over the past decade, the relationship between the timing of dialysis initiation and mortality has remained unclear in patients with ESRD in China. Methods: Patients who commenced maintenance hemodialysis from 2009 to 2014 from 24 hemodialysis centers in Mainland China were enrolled in the study (n = 1,674). Patients were divided into 2 groups based on the year they started hemodialysis (patients who started hemodialysis from 2009 to 2011, and patients who started hemodialysis from 2012 to 2014). Analysis of the yearly change in the estimated glomerular filtration rate (eGFR) at the initiation of dialysis was performed for the 2 groups. Meanwhile, the patients were divided into 3 groups based on their eGFR at the initiation of dialysis (<4, 4–8, and >8 mL/min/1.73 m2). For these 3 groups, the relationship between the eGFR at the start of dialysis and mortality were analyzed. Results: The average eGFRs were 5.68 and 5.94 mL/min/1.73 m2 for 2009–2011 and 2012–2014, respectively. Compared with the 2009–2011 group, the proportion of patients with diabetes in 2012–2014 increased from 26.7 to 37.7%. The prognosis of patients with different eGFRs at the start of dialysis was analyzed using Kaplan-Meier survival curves. After adjusting for confounding factors through a Cox regression model, no significant difference was demonstrated among the 3 groups (<4 mL/min/1.73 m2 was used as the reference, in comparison with 4–8 mL/min/1.73 m2 [p = 0.681] and >8 mL/min/1.73 m2 [p = 0.403]). Conclusion: In Mainland China, the eGFR at the start of dialysis did not change significantly over time from 2008 to 2014 and had no association with the mortality of patients with ESRD.

MO757COMPARISON OF ANTI-COAGULATION AND NO ANTI-COAGULATION IN DIALYSIS PATIENTS WITH ATRIAL FIBRILLATION: A SINGLE CENTER RETROSPECTIVE STUDY

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Jun Young Lee ◽  
Jae Won Yang ◽  
Jae Seok Kim ◽  
Seong Ok Choi ◽  
Byoung Geun Han
Keyword(s):  
Atrial Fibrillation ◽  
Cox Regression ◽  
Dialysis Patients ◽  
Dialysis Therapy ◽  
Cox Regression Analysis ◽  
Significant Difference ◽  
Baseline Characteristics ◽  
Stage Renal Disease ◽  
End Stage ◽  
Risk And Benefit

Abstract Background and Aims Atrial fibrillation (AF) is common arrhythmia in end stage renal disease patients. Although, the need of anticoagulation to prevent stroke and thromboembolism is increasing, the efficacy of anticoagulation is not proven in most of study. We retrospectively analyzed the risk and benefit of anticoagulation in dialysis patients with AF. Method By using medical record, we retrospectively analyzed all data of 99 patients who received dialysis therapy and diagnosed AF. Results Among 99 patients who diagnosed AF with dialysis 36 patients received anticoagulation (17 coumadin, 19 apixaban 2.5mg bid), 63 patients received no anticoagulation. There was no significant difference of baseline characteristics between anticoagulation, and no anticoagulation patients. Although no anticoagulation group experienced more all-cause (39.7% vs 32.4%, p=0.572) and cardiovascular mortality (17.6% vs 10.8%, p=0.197) than anticoagulation group it was not statistically significant. Compared to apixaban 2.5mg bid patients, coumadin anticoagulation patients experienced more frequent mfig ajor adverse cardiovascular events (35.3% vs 15.8%, p=0.109) but it was not statistically significant in multi variate Cox regression analysis (Hazard ratio 1.143, 95% Confidence Interval 0.503-2.597). Conclusion Apixaban 2.5mg bid was not inferior than coumadin considering risk and benefit of anticoagulation in dialysis patients.

Staphylococcus-induced glomerulonephritis: potential role for corticosteroids

2021 ◽  
Vol 14 (1) ◽  
pp. e237011
Author(s):  
Rui Filipe Nogueira ◽  
Nuno Oliveira ◽  
Vítor Sousa ◽  
Rui Alves
Keyword(s):  
Kidney Function ◽  
Potential Role ◽  
Graft Infection ◽  
Clinical Manifestations ◽  
Rapidly Progressive Glomerulonephritis ◽  
Vascular Graft Infection ◽  
Systemic Corticosteroids ◽  
Life Threatening ◽  
Stage Renal Disease ◽  
End Stage

Staphylococcus aureus is a troublesome pathogen, responsible for a broad range of clinical manifestations, ranging from benign skin infections to life-threatening conditions such as endocarditis and osteomyelitis. The kidney can be affected through a rapidly progressive glomerulonephritis mediated by an inflammatory reaction against a superantigen deposited in the glomerulus during the infection’s course. This glomerulopathy has a poor prognosis, often leading to chronically impaired kidney function, eventually progressing to end-stage renal disease. Treatment rests on antibiotherapy. Despite the inflammatory role in this disease’s pathophysiology, most authors discourage a simultaneous immunosuppressive approach given the concomitant infection. However, there are some reports of success after administration of systemic corticosteroids in these patients. We present a 66-year-old man with a staphylococcus-induced glomerulonephritis brought on by a vascular graft infection, with rapidly deteriorating kidney function despite extraction of the infected graft and 3 weeks of antibiotherapy with achievement of infection control. Kidney function improved after the introduction of corticosteroids. This case highlights the potential role of corticosteroids in selected cases of staphylococcus-induced glomerulonephritis, particularly those in which the infection is under control.

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