scholarly journals The association of genetic factors, educational attainment, and their interaction, with kidney function outcomes

2020 ◽  
Author(s):  
Chris H L Thio ◽  
Sander K R van Zon ◽  
Peter J van der Most ◽  
Harold Snieder ◽  
Ute Bültmann ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Educational Attainment ◽  
Kidney Function ◽  
Genetic Risk ◽  
Ordinary Least Squares ◽  
Environment Interaction ◽  
Genetic Score ◽  
Interaction Term ◽  
Egfr Decline

Abstract Both genetic predisposition and low educational attainment (EA) are associated with higher risk of chronic kidney disease. We examined the interaction of EA and genetic risk in kidney function outcomes. We included 3,597 participants from the Prevention of REnal and Vascular ENd stage Disease Cohort Study, a longitudinal study in a community-based sample from Groningen, the Netherlands (median follow-up 11 years, 1997-2012). Kidney function was approximated by estimating glomerular filtration rate (eGFR) from serum creatinine and cystatin C. Individual longitudinal linear eGFR trajectories were derived from linear mixed models. Genotype data on 63 single nucleotide polymorphisms, with known associations to eGFR, were used to calculate an allele-weighted genetic score (WGS). EA was categorized into high, medium, and low. In ordinary least squares analysis, higher WGS and lower EA showed additive effects on reduced baseline eGFR; the interaction term was non-significant. In analysis of eGFR decline, the significant interaction term suggested amplification of genetic risk by low EA. Adjustment for known renal risk factors did not affect our results. This study presents the first evidence of gene-environment interaction between EA and a WGS on eGFR decline, and provides population-level insights into the mechanisms underlying socioeconomic disparities in chronic kidney disease.

scholarly journals Association of Arterial Stiffness With Kidney Function Among Adults Without Chronic Kidney Disease

2020 ◽  
Vol 33 (11) ◽  
pp. 1003-1010
Author(s):  
Seiji Itano ◽  
Yuichiro Yano ◽  
Hajime Nagasu ◽  
Hirofumi Tomiyama ◽  
Hiroshi Kanegae ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Arterial Stiffness ◽  
Kidney Function ◽  
Proportional Hazards ◽  
Multivariable Analysis ◽  
Cox Proportional Hazards ◽  
Kidney Dysfunction ◽  
Cox Proportional Hazards Models ◽  
Egfr Decline

Abstract BACKGROUND Our aims were to assess whether arterial stiffness is associated with a higher risk for kidney dysfunction among persons without chronic kidney disease (CKD). METHODS We analyzed data from the national health checkup system in Japan; for our analyses, we selected records of individuals who completed assessments of cardio-ankle vascular index (CAVI) and kidney function from 2005 to 2016. We excluded participants who had CKD at baseline, defined as the presence of proteinuria or estimated glomerular filtration rate (eGFR) <60 ml/min/1.73 m2. We compared 2 groups of CAVI measurements—the highest quartile (≧8.1) and the combined lower 3 quartiles (<8.1). We used Cox proportional hazards models to assess associations between these 2 groups and subsequent CKD events, proteinuria, eGFR <60 ml/min/1.73 m2, and rapid eGFR decline (greater than or equal to −3 ml/min/1.73 m2 per year). RESULTS The mean age of the 24,297 included participants was 46.2 years, and 60% were female. Over a mean follow-up of 3.1 years, 1,435 CKD events occurred. In a multivariable analysis, the hazard ratios with 95% confidence intervals (CIs) for the highest vs. combined lower quartiles of CAVI measurements were 1.3 (1.1, 1.5) for CKD events, 1.3 (0.96, 1.62) for proteinuria, 1.4 (1.1, 1.7) for eGFR <60 ml/min/1.73 m2, and the odds ratio with 95% CI was 1.3 (1.1, 1.4) for rapid eGFR decline. CONCLUSIONS Persons with CAVI measurements ≧8.1 had a higher risk for CKD events compared with their counterparts with CAVI measurements <8.1. Greater arterial stiffness among adults without CKD may be associated with kidney dysfunction.

scholarly journals Associations between urinary cysteine-rich protein 61 excretion and kidney function decline in outpatients with chronic kidney disease: a prospective cohort study in Taiwan

BMJ Open ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. e051165
Author(s):  
Chun-Fu Lai ◽  
Jian-Jhong Wang ◽  
Ya-Chun Tu ◽  
Chia-Yu Hsu ◽  
Hon-Yen Wu ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Cohort Study ◽  
Kidney Disease ◽  
Kidney Function ◽  
Creatinine Ratio ◽  
Discriminative Performance ◽  
Cysteine Rich Protein ◽  
Kidney Function Decline ◽  
Egfr Decline

ObjectivesTo examine whether urinary excretion of cysteine-rich protein 61 (Cyr61), an acknowledged proinflammatory factor in kidney pathologies, increases in chronic kidney disease (CKD) and is associated with subsequent rapid kidney function decline.DesignAn observational cohort study.SettingIn the nephrology outpatient clinics of a tertiary hospital in Taiwan.ParticipantsWe enrolled 138 adult CKD outpatients (n=12, 32, 18, 18, 29 and 29 in stages 1, 2, 3a, 3b, 4 and 5 CKD, respectively) between February and October 2014 and followed them for 1 year. Their mean age was 60.46±13.16 years, and 51 (37%) of them were women.Primary outcome measuresUrinary Cyr61 levels were measured by ELISA. Rapid kidney function decline was defined as an estimated glomerular filtration rate (eGFR) decline rate ≥ 4 mL/min/1.73 m2/year or developing end-stage renal disease during subsequent 3-month or 1-year follow-up period. Models were adjusted for demographic and clinical variables.ResultsThe urine Cyr61-to-creatinine ratio (UCyr61CR) increased significantly in patients with stage 4 or 5 CKD. Multivariable linear regression analysis showed that log(UCyr61CR) was positively correlated with log(urine protein-to-creatinine ratio) (p<0.001) but negatively correlated with baseline eGFR (p<0.001) and hypertension (p=0.007). Complete serum creatinine data during the follow-up were available for 112 patients (81.2%). Among them, multivariable logistic regression identified log(UCyr61CR) was independently associated with rapid kidney function decline (adjusted OR 2.29, 95% CI 1.27 to 4.15) during the subsequent 3 months. UCyr61CR improved the discriminative performance of clinical models to predict 3-month rapid kidney function decline. In contrast, log(UCyr61CR) was not associated with rapid eGFR decline during the entire 1-year follow-up.ConclusionsElevated urinary Cyr61 excretion is associated with rapid short-term kidney function deterioration in patients with CKD. Measuring urinary Cyr61 excretion is clinically valuable for monitoring disease trajectory and may guide treatment planning.

scholarly journals Kidney Outcomes Associated With SGLT2 Inhibitors Versus Other Glucose-Lowering Drugs in Real-world Clinical Practice: The Japan Chronic Kidney Disease Database

2021 ◽  
Author(s):  
Hajime Nagasu ◽  
Yuichiro Yano ◽  
Hiroshi Kanegae ◽  
Hiddo J.L. Heerspink ◽  
Masaomi Nangaku ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Clinical Practice ◽  
Kidney Disease ◽  
Kidney Function ◽  
Sglt2 Inhibitor ◽  
Sglt2 Inhibitors ◽  
Glucose Lowering ◽  
Glucose Transporter 2 ◽  
Egfr Decline

<b>Objective: </b>Randomized controlled trials have shown kidney protective effects of sodium glucose transporter 2 (SGLT2) inhibitors, and clinical practice databases have suggested that these effects translate to clinical practice. However, long-term efficacy as well as whether the presence or absence of proteinuria and the rate of estimated glomerular filtration rates (eGFR) decline prior to SGLT2 inhibitors initiation modifies treatment efficacy among type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD) patients is unknown. <p><b>Research Design and Methods: </b>Using the Japan Chronic Kidney Disease Database (J-CKD-DB), a nationwide multicenter CKD registry, we developed propensity scores for SGLT2 inhibitor initiation, with 1:1 matching with patients who were initiated on other glucose-lowering drugs. The primary outcome included rate of eGFR decline, and the secondary outcomes included a composite outcome of 50% eGFR decline or end-stage kidney disease. </p> <p><b>Results: </b>At baseline, mean age at initiation of the SGLT2 inhibitor (n=1,033) or other glucose-lowering drug (n=1,033) was 64.4 years; mean eGFR was 68.1 mL/min per 1.73 m²; and proteinuria was apparent in 578 (28.0%) of included patients. During follow-up, SGLT2 inhibitor initiation was associated with reduced eGFR decline (difference in slope for SGLT2 inhibitors vs other drugs 0.75 mL/min/1.73 m² per year (0.51 to 1.00). During a mean follow-up of 24 months, 103 c<a>omposite kidney outcomes </a>occurred: 30 (14 events per 1,000 patient-years) among the SGLT2 inhibitors group and 73 (36 events per 1,000 patient-years) among the other drugs group (hazard ratio 0.40, 95% CI 0.26 to 0.61). The benefit provided by SGLT2 inhibitors was consistent irrespective of proteinuria and rate of eGFR decline before initiating SGLT2 inhibitors (p<sub>heterogeneity</sub> ≥0.35). </p> <p><b>Conclusions: </b>The benefits of SGLT2 inhibitors on kidney function as observed in clinical trials translate to patients treated in clinical practice with no evidence that the effects are modified by the underlying rate of kidney function decline or the presence of proteinuria.</p>

scholarly journals Kidney Outcomes Associated With SGLT2 Inhibitors Versus Other Glucose-Lowering Drugs in Real-world Clinical Practice: The Japan Chronic Kidney Disease Database

2021 ◽  
Author(s):  
Hajime Nagasu ◽  
Yuichiro Yano ◽  
Hiroshi Kanegae ◽  
Hiddo J.L. Heerspink ◽  
Masaomi Nangaku ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Clinical Practice ◽  
Kidney Disease ◽  
Kidney Function ◽  
Sglt2 Inhibitor ◽  
Sglt2 Inhibitors ◽  
Glucose Lowering ◽  
Glucose Transporter 2 ◽  
Egfr Decline

<b>Objective: </b>Randomized controlled trials have shown kidney protective effects of sodium glucose transporter 2 (SGLT2) inhibitors, and clinical practice databases have suggested that these effects translate to clinical practice. However, long-term efficacy as well as whether the presence or absence of proteinuria and the rate of estimated glomerular filtration rates (eGFR) decline prior to SGLT2 inhibitors initiation modifies treatment efficacy among type 2 diabetes mellitus (T2DM) and chronic kidney disease (CKD) patients is unknown. <p><b>Research Design and Methods: </b>Using the Japan Chronic Kidney Disease Database (J-CKD-DB), a nationwide multicenter CKD registry, we developed propensity scores for SGLT2 inhibitor initiation, with 1:1 matching with patients who were initiated on other glucose-lowering drugs. The primary outcome included rate of eGFR decline, and the secondary outcomes included a composite outcome of 50% eGFR decline or end-stage kidney disease. </p> <p><b>Results: </b>At baseline, mean age at initiation of the SGLT2 inhibitor (n=1,033) or other glucose-lowering drug (n=1,033) was 64.4 years; mean eGFR was 68.1 mL/min per 1.73 m²; and proteinuria was apparent in 578 (28.0%) of included patients. During follow-up, SGLT2 inhibitor initiation was associated with reduced eGFR decline (difference in slope for SGLT2 inhibitors vs other drugs 0.75 mL/min/1.73 m² per year (0.51 to 1.00). During a mean follow-up of 24 months, 103 c<a>omposite kidney outcomes </a>occurred: 30 (14 events per 1,000 patient-years) among the SGLT2 inhibitors group and 73 (36 events per 1,000 patient-years) among the other drugs group (hazard ratio 0.40, 95% CI 0.26 to 0.61). The benefit provided by SGLT2 inhibitors was consistent irrespective of proteinuria and rate of eGFR decline before initiating SGLT2 inhibitors (p<sub>heterogeneity</sub> ≥0.35). </p> <p><b>Conclusions: </b>The benefits of SGLT2 inhibitors on kidney function as observed in clinical trials translate to patients treated in clinical practice with no evidence that the effects are modified by the underlying rate of kidney function decline or the presence of proteinuria.</p>

Lesser eGFR Decline with Dulaglutide Regardless of Weight Changes in People with Type 2 Diabetes and Moderate to Severe Chronic Kidney Disease (AWARD-7)

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 1066-P ◽  
Author(s):  
KATHERINE R. TUTTLE ◽  
MARK LAKSHMANAN ◽  
BRIAN L. RAYNER ◽  
ROBERT S. BUSCH ◽  
ALAN G. ZIMMERMANN ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Weight Changes ◽  
Severe Chronic Kidney Disease ◽  
Egfr Decline

scholarly journals Oxidized LDL Modifies the Association between Proteinuria and Deterioration of Kidney Function in Proteinuric Diabetic Kidney Disease

Life ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 504
Author(s):  
Stefanos Roumeliotis ◽  
Panagiotis I. Georgianos ◽  
Athanasios Roumeliotis ◽  
Theodoros Eleftheriadis ◽  
Aikaterini Stamou ◽  
...  
Keyword(s):  
Kidney Disease ◽  
Kidney Function ◽  
Diabetic Kidney Disease ◽  
Oxidized Ldl ◽  
Low Density Lipoprotein ◽  
Density Lipoprotein ◽  
Secondary Outcome ◽  
Diabetic Kidney ◽  
Egfr Decline ◽  
Over Time

Proteinuria is characterized by low accuracy for predicting onset and development of diabetic kidney disease (DKD) because it is not directly associated with molecular changes that promote DKD, but is a result of kidney damage. Oxidized low-density lipoprotein (ox-LDL) reflects oxidative stress and endothelial dysfunction, both underlying the development of proteinuria and loss of kidney function in DKD. We aimed to investigate whether ox-LDL modifies the association between proteinuria and progression of DKD in a cohort of 91 patients with proteinuric DKD and diabetic retinopathy, followed for 10 years. The primary endpoint was a combined kidney outcome of eGFR decline ≥30% or progression to end-stage kidney disease. After the end of the study, we considered the percentage change of eGFR over time as our secondary outcome. Proteinuria was associated with both outcomes, and ox-LDL amplified the magnitude of this link (p < 0.0001 for primary and p < 0.0001 for secondary outcome, respectively). After adjustment for duration of diabetes, history of cardiovascular disease and serum albumin, ox-LDL remained a significant effect modifier of the association between proteinuria and eGFR decline over time (p = 0.04). Our study shows that in proteinuric DKD, circulating ox-LDL levels amplified the magnitude of the association between proteinuria and progression of DKD.

scholarly journals Lipocalin 2 stimulates bone fibroblast growth factor 23 production in chronic kidney disease

Bone Research ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Guillaume Courbon ◽  
Connor Francis ◽  
Claire Gerber ◽  
Samantha Neuburg ◽  
Xueyan Wang ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Growth Factor ◽  
Kidney Disease ◽  
Iron Deficiency ◽  
Fibroblast Growth Factor ◽  
Kidney Function ◽  
Fibroblast Growth Factor 23 ◽  
Left Ventricular ◽  
Fibroblast Growth ◽  
Lipocalin 2

AbstractBone-produced fibroblast growth factor 23 (FGF23) increases in response to inflammation and iron deficiency and contributes to cardiovascular mortality in chronic kidney disease (CKD). Neutrophil gelatinase-associated lipocalin (NGAL or lipocalin 2; LCN2 the murine homolog) is a pro-inflammatory and iron-shuttling molecule that is secreted in response to kidney injury and may promote CKD progression. We investigated bone FGF23 regulation by circulating LCN2. At 23 weeks, Col4a3KO mice showed impaired kidney function, increased levels of kidney and serum LCN2, increased bone and serum FGF23, anemia, and left ventricular hypertrophy (LVH). Deletion of Lcn2 in CKD mice did not improve kidney function or anemia but prevented the development of LVH and improved survival in association with marked reductions in serum FGF23. Lcn2 deletion specifically prevented FGF23 elevations in response to inflammation, but not iron deficiency or phosphate, and administration of LCN2 increased serum FGF23 in healthy and CKD mice by stimulating Fgf23 transcription via activation of cAMP-mediated signaling in bone cells. These results show that kidney-produced LCN2 is an important mediator of increased FGF23 production by bone in response to inflammation and in CKD. LCN2 inhibition might represent a potential therapeutic approach to lower FGF23 and improve outcomes in CKD.

scholarly journals Renal function trajectories in hepatitis C infection: differences between renal healthy and chronic kidney disease individuals

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Cheng-Kai Hsu ◽  
Tai-Shuan Lai ◽  
Yih-Ting Chen ◽  
Yi-Ju Tseng ◽  
Chin-Chan Lee ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Function ◽  
Hepatitis C ◽  
Kidney Disease ◽  
Normal Renal Function ◽  
Elderly Women ◽  
Hcv Infection ◽  
Diabetic Patients ◽  
Subgroup Analyses ◽  
Egfr Decline

AbstractAssociations between hepatitis C virus (HCV) and chronic kidney disease (CKD) have been reported; however, differences of renal progression between general and CKD population remain to be elucidated in prospective studies. A total of 1179 participants, who have tested for anti-HCV antibody, were enrolled and prospectively followed for 3 years. The risks associated with HCV infection, in terms of incidence of CKD, annual estimated glomerular filtration rate (eGFR) changes and 50% decline of eGFR at 3-year from baseline, were compared between normal renal function subjects and CKD patients. Overall, 111 of 233 (47.6%) CKD patients and 167 of 946 (17.7%) non-CKD subjects had HCV infection. The crude incidence rates of CKD were 226.9 per 1000 person-years and 14.8 per 1000 person-years in in HCV and non-HCV infected patients, respectively. The adjusted hazard ratio of HCV infection for incident CKD was 7.9 (95% CI 5–12.7). The HCV-infected normal renal function subjects were independently associated with increased risks of eGFR decline in the 1-year, 2-year and 3-year, respectively. The risk associations remained significant in 50% decline of eGFR at 3 years models and in different subgroup analyses. The increases of risks of eGFR decline were also notorious among overall HCV-infected CKD patients. However, the risk associations were less prominent in subgroup analyses (elderly, women and diabetic patients). The findings highlighted the importance of viral diagnosis with not only prognostic but also public health implications for preserving kidney function.

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