Risk Of Chronic Kidney Disease Research Articles

Comparison of EKFC, Pakistani CKD-EPI and 2021 Race-Free CKD-EPI creatinine equations in South Asian CKD population: A study from Pakistani CKD community cohort.

South Asian individuals possess a high risk of chronic kidney disease. There is a need to study, evaluate, and compare the newly suggested glomerular filtration rate (eGFR) equations for accurate CKD diagnosis, staging, and drug dosing. This study aimed to (1) evaluate the European Kidney Function Consortium (EKFC), Pakistani CKD-EPI, and 2021 Race-Free CKD-EPI creatinine equation in the South Asian population with CKD and (2) to examine the expected implications on both CKD classification as well as End Stage Renal Disease (ESRD) prevalence across these equations in South Asian population. We carried out a cross-sectional investigation on 385 participants, a CKD cohort ≥ 18 years, at Allama Iqbal Medical College, Jinnah Hospital, Lahore. Serum creatinine was measured by Jaffe's method and rGFR was measured by inulin clearance. Pakistani CKD-EPI has a lower median difference at -1.33 ml/min/1.73m2 elevated precision (IQR) at 2.33 (-2.36, -0.03) and higher P30 value at 89.35% than 2021 CKD-EPI and EKFC equations. The mean difference (ml/min/1.73m2), 95% agreement limits (ml/min/1.73m2) of CKD-EPI PK: -1.18, -6.14, 2021 CKD-EPI: -5.98, -13.24 and EKFC: -5.62, -13.01 (P <0.001). These equations highly correlated to rGFR (P <0.001). An upward re-classification in GFR categories was shown by 2021 CKD-EPI and EKFC compared to the Pakistani CKD-EPI equation. However, there was an exception regarding the G5 category, where an elevated count of 217 (56.36%) was shown for CKD-EPI PK. The prevalence of ESRD was seen in entire age groups and prevailed among females more than in males overall equations. Pakistani CKD-EPI exhibited outstanding performance, while 2021 CKD-EPI and EKFC demonstrated poor performances and could not show an adequate advantage for both CKD classification and prevalence of ESRD compared to Pakistani CKD-EPI. Therefore, Pakistani CKD-EPI appears optimal for this region and warrants future validation in other South Asian countries. In contrast, suitable measures must be implemented in Pakistani laboratories.

Abstract P421: Smoking Timing, Healthy Diet, and Risk of Incident CKD Among Smokers: A Cohort Study in UK Biobank

Introduction: While smoking is a recognized risk factor for chronic kidney disease (CKD), the relationship between the smoking timing and CKD remains largely unstudied. Hypothesis: We assessed the hypothesis that there is an association between the smoking timing and the risk of CKD. Method: A total of 32,776 participants with complete data on the time from waking to the first cigarette and free of prevalent CKD from UK Biobank were included in this prospective study. The Cox proportional hazard model was used to investigate the associations between smoking timing and risk of CKD. The potential interactions of smoking timing with risk factors in relation to CKD risk were assessed on both multiplicative and additive scales. Results: During a median follow-up of 12 years, 940 incident CKD cases were reported. Shorter time from waking to the first cigarette was significantly associated with a higher risk of incident CKD ( P -trend=0.012). The adjusted hazard ratio (HR) associated with smoking timing was 1.28 (95% CI: 0.92-1.80) for 61-120 minutes, 1.48 (95% CI: 1.11-1.96) for 30-60 minutes, 1.36 (95% CI: 1.01-1.88) for 5-15 minutes, and 1.70 (95% CI: 1.22-2.37) for &lt;5 minutes, respectively. Those who smoke within 5 minutes of waking had a 70% increased risk of CKD incident compared to those who delayed for over 120 minutes. Furthermore, there was a significant positive additive interaction between the timing of smoking and a healthy diet score ( P for additive interaction=0.01). Conclusion: Our findings indicate a significant association between the shorter time from waking to the first cigarette and a higher CKD risk; and the associations are exacerbated in the presence of an unhealthy diet.

Abstract MP16: Degree of Joint Risk Factor Control and Incident Chronic Kidney Disease Among Obese Individuals

Introduction: Individuals who are obese are at a higher risk for chronic kidney disease (CKD) than the non-obese population. Hypothesis: We assessed the hypothesis that controlling joint risk factors might reduce the increased risk of CKD observed in participants with obesity. Methods: We included a total of 97,538 participants who were obese at baseline and matched 97,538 normal weight control participants from the UK Biobank in the analysis. The degree of joint risk factor control was assessed based on 6 major CKD risk factors, including blood pressure, hemoglobin A1c, low-density lipoprotein cholesterol, albuminuria, smoking, and physical activity. The Cox proportional hazards models were used to estimate associations between the degree of risk factor control and risk of CKD. Results: Among obese participants, joint risk factor control showed an association with a stepwise reduction of incident CKD risk. Each additional risk factor control corresponded to an 11% (HR: 0.89, 95%CI: 0.86-0.91) reduced risk of CKD among obese participants; with the optimal controlling of all six risk factors associated with a 49% (HR: 0.51, 95% CI: 0.43-0.61) decrease in risk of CKD. Furthermore, in obese individuals who jointly controlled all six risk factors, the excess risk of CKD associated with obesity was effectively neutralized compared to normal weight control subjects. Notably, the protective correlations between the degree of joint risk factor control and the incidence of CKD were more pronounced in men compared to women, in individuals with a lower healthy food score versus a higher score, and among diabetes medication users as opposed to nonusers ( P for interaction=0.017, 0.033, 0.014 respectively). Conclusion: The joint risk factor control is associated with an inverse association of CKD risk in an accumulative manner among obese people. Achieving ideal control over risk factors may effectively counterbalance the excessive risk of CKD typically associated with obesity.

Abstract 35: Association of SGLT2 Inhibitors and Other Second Line Therapies With Incident Chronic Kidney Disease in Patients With Type 2 Diabetes

Introduction: Type 2 diabetes (T2D) is a strong risk factor for chronic kidney disease (CKD). Clinical trials have shown that intensive glycemic control prevents the development of kidney failure and decreases in eGFR in patients with T2D and CKD. Furthermore, sodium-glucose cotransporter-2 inhibitors (SGLT2i) slow the progression of CKD compared to other glucose lowering medications. However, it’s unknown whether SGLT2 inhibitors reduce the risk of incident CKD. Using data from the US MarketScan administrative databases (2014-21), we assessed the association between use of SGLT2i vs. other 2 nd line therapies and risk of incident CKD among patients with T2D on metformin. Methods: We included 428,814 matched patients with T2D on metformin and a 2 nd line therapy. SGLT2i users were matched with up to 5 other 2 nd line therapy users by age, sex, date of enrollment, and date of 2 nd line therapy initiation. Other 2 nd line therapies included dipeptidyl peptidase-4 (DPP-4) inhibitors, glucagon-like peptide-1 (GLP-1) receptor agonists, sulfonylureas, thiazolidinediones, and insulin. Incident CKD was defined using ICD codes. Those with prevalent CKD were excluded. Cox proportional hazards models were used. Results: Participants were on average age 53±10 years at baseline and 46% were female. Over a median follow-up of 2.0 years, 6,024 patients were diagnosed with CKD. After multivariable adjustments, SGLT2i users had a lower risk of incident CKD than those taking other 2 nd line therapies (Table; HR [95% CI]: 0.43 [0.39-0.47]). When compared to users of each 2 nd line therapy individually, SGLT2i users consistently had a lower risk of CKD. Conclusion: In this analysis using real-world data, among patients with T2D on metformin, SGLT2i use was associated with a lower risk of incident CKD than other 2 nd line diabetes therapies (when assessed as a group and individually). Results from this study may inform clinical guidelines regarding treatment options for those with diabetes at high-risk for CKD.

Abstract P538: Relations of Left Ventricular Mass With Long-Term Cardiovascular and Health Outcomes: The Framingham Heart Study

Introduction: Although elevated left ventricular mass (LVM) is associated with increased risk for cardiovascular disease (CVD) events over short-term follow-up, limited data exists regarding echocardiographic assessments in relation to long-term health outcomes. Hypothesis: We assessed the associations of LVM to the risk of incident all-cause mortality, CVD, dementia, hypertension, diabetes, and chronic kidney disease (CKD) over 20 years of follow-up. Methods: We evaluated up to 3 serial echocardiographic observations (1991-2008) for up to 8218 Framingham Heart Study participants. We modeled LVM as indexed to height 2.7 , logarithmically transformed then standardized. Utilizing multivariable-adjusted time-dependent and interval-censored Cox proportional hazards models, we related log-LVMI to the incidence of CVD and other health outcomes through the end of 2019 by updating LVM and all covariates at multiple examinations. Results: Over a median follow-up of 17 years (max 29 years), our study participants (mean age 47 years, 54% women) experienced 1353 events for all-cause mortality, 948 for CVD, 293 for dementia, 1631 for hypertension, 492 for diabetes, and 627 for CKD. Higher log-LVMI was significantly associated with increased incident all-cause mortality and CVD, including its respective components: coronary heart disease, heart failure (with reduced and preserved ejection fraction), and stroke. Results were consistent for incident hard and atherosclerotic CVD. Higher LVMI was also significantly associated with increased incidence of dementia, hypertension, diabetes, and CKD (defined as eGFR&lt;60 mL/min/1.73 m 2 and defined with urine albumin-to-creatinine ratio ≥30). Conclusions: In our large prospective community-based sample higher LVMI carries an adverse prognosis for multiple health outcomes over two decades of follow-up. These findings underscore the importance of maintaining an optimal LVM over the life course with control of its key determinants such as blood pressure and glycemia.

Abstract P416: Higher Household Income is Protective Against Chronic Kidney Disease Among White but Not Black Adults: An Analysis of 2017-2020 NHANES

Introduction: Chronic kidney disease (CKD) disproportionately affects Black adults in the U.S. Prior work suggests that lower income is a risk factor for CKD among Black but not White adults; however, this has not been examined in a nationally representative population, using the updated, race-free kidney function equation. Objective: To examine the relationship between household income and CKD between Black and White adults. Methods: We used data from the 2017-2020 NHANES. CKD was defined as an estimated glomerular filtration rate (eGFR) &lt; 60 mL/min/1.73m 2 based on the race-free CKD-EPI equation and/or a urine albumin-creatinine ratio &gt;30 mg/g. The poverty income ratio (PIR) (ranging from 0 to ≥5) was reported in NHANES (calculated as a multiple of interviewees self-reported income in dollars as compared to the federal poverty line). We examined the association between PIR and CKD using survey-weighted Poisson regression models, adjusted for age, sex, education, marital status, and medical comorbidities. We also examined how this association differed between Black and White adults aged ≥18 years old in separate subgroup analyses via interaction terms. Results: The weighted sample was 51.7% female, 15.5% Black, and 84.5% White with mean age (±SE) of 47.5±0.3 years. In the total sample, and among White adults, higher household income was associated with a lower prevalence of CKD ( Table ). A one-unit higher PIR was associated with a 11% (95% CI: 5%, 16%) lower prevalence of CKD in the total sample and a 12% (95% CI: 6%, 18%) lower prevalence of CKD among White adults. However, this association was not significant for Black adults. The interaction term for race and income was significant ( P = 0.001). Conclusion: Higher income was associated with a lower risk of CKD among White, but not Black adults. Further work is needed to characterize the complex relationship between socioeconomic status and race to address disparities in CKD.

Associations of MRI-derived kidney volume, kidney function, body composition and physical performance in ≈38000 UK Biobank participants: a population-based observational study.

Kidney volume is used as a predictive and therapeutic marker for several clinical conditions. However, there is a lack of large-scale studies examining the relationship between kidney volume and various clinicodemographic factors, including kidney function, body composition and physical performance. In this observational study, MRI-derived kidney volume measurements from 38526 UK Biobank participants were analysed. Major kidney volume-related measures included body surface area (BSA)-adjusted total kidney volume (TKV) and the difference in bilateral kidneys. Multivariable-adjusted linear regression and cubic spline analyses were used to explore the association between kidney volume-related measures and clinicodemographic factors. Cox or logistic regression was used to identify the risks of death, non-kidney cancer, myocardial infarction, ischaemic stroke and chronic kidney disease (CKD). The median of BSA-adjusted TKV and the difference in kidney volume were 141.9ml/m2 [interquartile range (IQR) 128.1-156.9] and 1.08-fold (IQR 1.04-1.15), respectively. Higher BSA-adjusted TKV was significantly associated with higher estimated glomerular filtration rate {eGFR; β=0.43 [95% confidence interval (CI) 0.42-0.44]; P<.001}, greater muscle volume [β=0.50 (95% CI 0.48-0.51); P<.001] and greater mean handgrip strength [β=0.15 (95% CI 0.13-0.16); P<.001] but lower visceral adipose tissue volume [VAT; β=-0.09 (95% CI -0.11 to -0.07); P<.001] in adjusted models. A greater difference in bilateral kidney volumes was associated with lower eGFR, muscle volume and physical performance but with higher proteinuria and VAT. Higher BSA-adjusted TKV was significantly associated with a reduced risk of CKD [odds ratio (OR) 0.7 (95% CI 0.63-0.77); P<.001], while a greater difference in kidney volume was significantly associated with an increased risk of CKD [OR 1.13 (95% CI 1.07-1.20); P<.001]. Higher BSA-adjusted TKV and lower differences in bilateral kidney volumes are associated with higher kidney function, muscle volume and physical performance and a reduced risk of CKD.

IFI16 Is Indispensable for Promoting HIF-1α-Mediated APOL1 Expression in Human Podocytes under Hypoxic Conditions.

Genetic variants in the protein-coding regions of APOL1 are associated with an increased risk and progression of chronic kidney disease (CKD) in African Americans. Hypoxia exacerbates CKD progression by stabilizing HIF-1α, which induces APOL1 transcription in kidney podocytes. However, the contribution of additional mediators to regulating APOL1 expression under hypoxia in podocytes is unknown. Here, we report that a transient accumulation of HIF-1α in hypoxia is sufficient to upregulate APOL1 expression in podocytes through a cGAS/STING/IRF3-independent pathway. Notably, IFI16 ablation impedes hypoxia-driven APOL1 expression despite the nuclear accumulation of HIF-1α. Co-immunoprecipitation assays indicate no direct interaction between IFI16 and HIF-1α. Our studies identify hypoxia response elements (HREs) in the APOL1 gene enhancer/promoter region, showing increased HIF-1α binding to HREs located in the APOL1 gene enhancer. Luciferase reporter assays confirm the role of these HREs in transcriptional activation. Chromatin immunoprecipitation (ChIP)-qPCR assays demonstrate that IFI16 is not recruited to HREs, and IFI16 deletion reduces HIF-1α binding to APOL1 HREs. RT-qPCR analysis indicates that IFI16 selectively affects APOL1 expression, with a negligible impact on other hypoxia-responsive genes in podocytes. These findings highlight the unique contribution of IFI16 to hypoxia-driven APOL1 gene expression and suggest alternative IFI16-dependent mechanisms regulating APOL1 gene expression under hypoxic conditions.

Exploring the nutritional landscape and emerging trends in kidney stone research: visualization and bibliometric analysis

BackgroundKidney stones, or renal nephrolithiasis, are common and dangerous, increasing the risk of chronic kidney disease. Dietary manipulation is essential for the prevention and recurrence of kidney stones. Research into nutrition and kidney stones lacks library analysis, making it difficult to identify new trends. This bibliometric study was conducted to explore the current landscape of research on nutrition and kidney stones worldwide. This paper also emphasizes significant research trends in this area over the past two decades, aiming to assist researchers in understanding the current research status and identifying potential future directions.MethodsThe scholarly literature pertaining to diet and kidney stones was systematically explored utilizing SciVerse Scopus to identify pertinent research articles released from 2003 to 2022. The examination encompassed an assessment of publication patterns, key contributors, focal areas of research, prevalent themes, influential articles, and emerging research avenues. Following data extraction to Excel, analyses, including frequencies, percentages, and linear regression, were conducted. Visual exploration was facilitated through the use of the VOSviewer program version 1.6.19.ResultsBetween 2003 and 2022, 697 publications on nutrition and kidney stones were identified. There were 478 original articles (68.58%), 120 reviews (17.22%) and 99 other types of publications (14.20%). The United States is the most productive country, with significant growth in research in the fields of nutrition and kidney stones. The United States has demonstrated the strongest partnerships between researchers’ networks from various countries. Cluster analysis revealed three major research themes: sex differences in kidney stone disease, the correlation between increased dietary acid consumption and calcium oxide kidney stones, and nephrolithiasis associated with a ketogenic diet.ConclusionsThis study offers a thorough examination of nutrition and kidney stone research, encompassing key research domains, collaborative networks, and emerging patterns. The findings can aid researchers in gaining insight into the present landscape of the discipline and determining future research directions.

The Fatty Liver Index's Association with Incident Chronic Kidney Disease in Korean Middle-Aged Adults: A Community-Based Cohort Study.

(1) Background: The relationship between nonalcoholic fatty liver disease (NAFLD) and incident chronic kidney disease (CKD) is unclear, and long-term follow-up data are limited. Therefore, this study aimed to evaluate whether NAFLD, as assessed by the fatty liver index (FLI), could predict the development of CKD in a community-based Korean cohort over 16 years. (2) Methods: Among the 10,030 total participants, 7778 patients without CKD were selected from the Korean Genome and Epidemiology Study (KoGES). The FLI grade ranged from 0 to 100 and was divided into three groups: low (FLI, <30), intermediate (FLI, 30-59), and high (FLI, ≥60). An estimated glomerular filtration rate (eGFR) of <60 mL/min/1.73 m2 or the development of proteinuria was considered to indicate incident CKD. (3) Results: During the 16-year follow-up period, 919 individuals (11.8%) developed CKD. The HRs of incident CKD in the intermediate FLI group (30-59) and high FLI group (≥60) increased compared with the reference low FLI group (<30) after adjusting for potentially confounding variables. NAFLD, as assessed by the FLI, was an independent risk factor for CKD. (4) Conclusions: Our findings suggest that the FLI, a simple surrogate biomarker of fatty liver disease, may be used to identify people at high risk of incident CKD in clinical practice.

Association between famine exposure during infancy and childhood and the risk of chronic kidney disease in adulthood.

Famine exposure in childhood is proven to be associated with multiple chornic disease in adult but has not been studied with chronic kidney disease (CKD). This study was conducted to identify the relationship between famine exposure during infancy and childhood - specifically, the Chinese famine of 1959-1961 - and the risk of adult-onset chronic kidney disease (CKD) among Chinese individuals. This study included 2937 individuals from the Qingdao Diabetes Prevention Program. They were stratified by birth year into infancy-exposed (1956-1958), childhood-exposed (1950-1955) and unexposed (1963-1971) groups. The estimated glomerular filtration rate (eGFR) was calculated using the Chronic Kidney Disease Epidemiology Collaboration equation. CKD was defined as an eGFR of <90 mL/min/1.73 m2 . The mean eGFR values for the infancy-exposed and childhood-exposed groups were 107.23 ± 12.53 and 103.23 ± 12.44 mL/min/1.73 m2 , respectively, both of which were lower than that of the unexposed group (114.82 ± 13.39 mL/min/1.73 m2 ; P < 0.05). In the crude model, the odds ratio (OR) for CKD was 2.00 (95% confidence interval (CI): 1.39-2.88) in the infancy-exposed group and 2.92 (95% CI: 2.17-3.93) in the childhood-exposed group. Further adjustments for urban/rural residence, body mass index, age, current smoking, type 2 diabetes, systolic blood pressure, diastolic blood pressure and total cholesterol did not significantly alter the association between famine exposure and CKD. The corresponding ORs were 1.71 (95% CI: 1.17-2.50) and 2.48 (95% CI: 1.81-3.40) for the infancy-exposed and childhood-exposed groups respectively. Famine exposure during infancy and childhood is associated with a long-term decline in eGFR and an increased adult-onset CKD risk. Early intervention for high-risk individuals may mitigate the risk of adult-onset CKD.

Exploring Risk Factors Involved in The Progression of Chronic Kidney Disease: A Prospective Study in A Quaternary Care Hospital - Chennai.

Purpose: The study investigates the rising prevalence of chronic kidney disease (CKD) and its associated challenges, including co-morbidities and uncertain prognosis. Patients often face disease progression without clear identification of those at high risk for rapid advancement to end-stage renal disease. Conducted in a hospital setting, the research examines a cohort of adults with CKD to determine the rate of progression from early to advanced stages and identify predictors of rapid advancement. Methods: Patients meeting inclusion/exclusion criteria provided written consent before screening. The Modification of Diet in Renal Disease (MDRD-4) equation determined eGFR, and staging was based on admission results. Data were categorized into early and advanced stages according to eGFR values. Demographic details, clinical features, risk factors, comorbidities, laboratory results, and other supportive care information were extracted from hospital records. The collected data were analyzed to identify risk factors influencing CKD progression. Results: A comparative analysis of baseline characteristics revealed that age, gender, and BMI significantly contributed to the development of end-stage kidney disease. Key factors such as serum creatinine, serum uric acid, eGFR, random blood sugar, and fluid intake showed statistical significance in the progression of kidney disease. The risk of end-stage CKD was notably elevated with smoking, alcohol consumption, and increased fluid intake. Conclusion: The study demonstrated a significant association between CKD progression and parameters such as age, BMI, habits like alcohol intake and smoking, as well as clinical factors including serum creatinine, serum uric acid, eGFR, and random blood sugar. Patients with diabetes, coronary artery disease (CAD), and anemia exhibited a more accelerated decline in renal function. These factors can be modified through appropriate treatment.

Modern concepts of the role of asymptomatic hyperuricemia in the formation of chronic kidney disease and cardiovascular risk

Modern concepts of the role of asymptomatic hyperuricemia in the formation of chronic kidney disease and cardiovascular risk

Association between blood pressure variability and risk of kidney function decline in hypertensive patients without chronic kidney disease: a post hoc analysis of Systolic Blood Pressure Intervention Trial study.

Blood pressure variability (BPV) is a risk factor for poor kidney function independent of blood pressure (BP) in chronic kidney disease (CKD). Little is known about the association between kidney function decline and BPV in hypertensive patients without CKD. A post-hoc analysis of the Systolic Blood Pressure Intervention Trial (SPRINT) was performed. BPV was measured as standard deviation (SD) and average real variability (ARV). Cox proportional hazard models were employed to explore the relationship between BPV and incident CKD and albuminuria. A total of 5700 patients were included, with a mean age of 66.4 years old. During a median of 3.29 years follow-up, 150 (2.6%) patients developed CKD and 222 (7.2%) patients developed albuminuria. Patients were divided into four groups according to the quartiles of BPV. Compared with SBPV Q1, the incidence of CKD was higher in SBPV Q2-Q4; hazard ratios and 95% confidence interval were 1.81 (1.07-3.04), 1.85 (1.10-3.12) and 1.90 (1.13-3.19), respectively. The association between incident CKD and albuminuria with DBPV was less significant than SBPV. Similar results were found when measuring BPV as ARV and SD. No interaction was detected in BP-lowering strategy and SBPV on incident CKD and albuminuria ( P > 0.05). This study found that BPV was a risk factor for incident CKD and albuminuria in patients without CKD, especially SBPV. Although intensive BP control increased the risk of CKD, the association between SBPV and kidney function decline did not differ between the two treatment groups. URL: https://clinicaltrials.gov/ , Unique identifier: NCT01206062.

The Association Between Thyroid Hormones and Renal Function in Euthyroid Chinese Individuals: A Population-Based Cross-Sectional Study.

Objective This population-based cross-sectional study aimed to investigate the association between thyroid hormones and renal function in euthyroid Chinese individuals, as the relationship between thyroid hormones and renal function in this population remains unclear. Methods A total of 661 participants were included in the study after excluding individuals with thyroid diseases, incomplete clinical measurements, or those taking medications affecting thyroid function. Participants were categorized into three groups based on serum thyroid hormone and antibody levels. The study adjusted for covariates and assessed the glomerular filtration rate (GFR) and urine albumin-to-creatinine ratio (ACR) in relation to thyroid hormone levels. Results After adjusting for covariates, the study found a significant increase in GFR in the middle and highest tertiles of free triiodothyronine (FT3) and the highest tertile of total triiodothyronine (TT3). Serum FT3 and TT3 levels were significantly associated with GFR. Additionally, the study observed a significantly lower GFR in the highest tertile of thyroid-stimulating hormone (TSH) compared to the lowest tertile. However, thyroid hormone and antibody levels were not associated with the ACR. Furthermore, the highest tertiles of TT3 and total thyroxine (TT4) were associated with a decreased risk of chronic kidney disease (CKD). Conclusion In our study among euthyroid Chinese individuals, we observed a significant association between thyroid functionand GFR. Specifically, lower FT3, TT3, and higher TSH were associated with reduced GFR, indicating a potential role for thyroid hormones in maintaining renal function. Furthermore, lower levels of TT3and TT4were associated with an increased risk of CKD. These findings suggest a direct link between thyroid and renal function, even in euthyroid individuals, emphasizing the need for further investigation to elucidate the underlying mechanisms and potential therapeutic implications.

Lupus nephritis and associated thrombotic microangiopathy

Lupus nephritis represents the most common manifestation of lupus of the solid organs and is associated with an increased risk of chronic kidney disease. The co-occurrence of lupus nephritis and thrombotic microangiopathy is described to be rare but implies the risk of fatal organ dysfunction. We report three patients in whom these two disease entities occurred in parallel, necessitating intensive immunosuppressive therapy, including complement blockade.

Metabolic health's central role in chronic kidney disease progression: a 20-year study of obesity-metabolic phenotype transitions

This study investigates the risk of chronic kidney disease (CKD) across four metabolic phenotypes: Metabolically Healthy-No Obesity (MH-NO), Metabolically Unhealthy-No obesity (MU-NO), Metabolically Healthy-Obesity (MH-O), and Metabolically Unhealthy-Obesity (MU-O). Data from the Tehran Lipid and Glucose Study, collected from 1999 to 2020, were used to categorize participants based on a BMI ≥ 30 kg/m2 and metabolic health status, defined by the presence of three or four of the following components: high blood pressure, elevated triglycerides, low high-density lipoprotein, and high fasting blood sugar. CKD, characterized by a glomerular filtration rate < 60 ml/min/1.72 m2. The hazard ratio (HR) of CKD risk was evaluated using Cox proportional hazard models. The study included 8731 participants, with an average age of 39.93 years, and identified 734 incidents of CKD. After adjusting for covariates, the MU-O group demonstrated the highest risk of CKD progression (HR 1.42–1.87), followed by the MU-NO group (HR 1.33–1.67), and the MH-O group (HR 1.18–1.54). Persistent MU-NO and MU-O posed the highest CKD risk compared to transitional states, highlighting the significance of exposure during early adulthood. These findings emphasize the independent contributions of excess weight and metabolic health, along with its components, to CKD risk. Therefore, preventive strategies should prioritize interventions during early-adulthood.

Association of ketone bodies with incident CKD and death: A UK Biobank study

AimsAlthough cellular and animal models have suggested a protective effect of ketone bodies (KBs), clinical data are still lacking to support these findings. This study aimed to investigate the association of KB levels with incident chronic kidney disease (CKD) and death. MethodsThis was a prospective cohort study of 87,899 UK Biobank participants without baseline CKD who had plasma levels of β-hydroxybutyrate, acetoacetate, and acetone levels measured at the time of enrollment. The main predictor was plasma total KB, which was the sum of the aforementioned three KBs. The primary outcome was a composite of incident CKD, or all-cause mortality. Secondary outcomes included the individual components of the primary outcome. ResultsDuring a median follow-up of 11.9 years, a total of 8,145 primary outcome events occurred (incidence rate 8.0/1,000 person-years). In the multivariable Cox model, a 1-standard deviation increase in log total KB was associated with a 7 % [adjusted hazard ratio (aHR), 1.07; 95 % confidence interval (CI), 1.05–1.10] higher risk of the primary outcome. When stratified into quartiles, the aHR (95 % CI) for Q4 versus Q1 was 1.18 (1.11–1.27). This association was consistent for incident CKD (aHR, 1.04; 95 % CI, 1.01–1.07), and all-cause mortality (aHR, 1.10; 95 % CI, 1.07–1.13). Compared with Q1, Q4 was associated with a 12 % (aHR 1.12; 95 % CI 1.02–1.24) and 26 % (aHR 1.26; 95 % CI 1.15–1.37) higher risk of incident CKD and all-cause mortality, respectively. ConclusionsHigher KB levels were independently associated with higher risk of incident CKD and death.

Diet quality in relation to kidney function and its potential interaction with genetic risk of kidney disease among Dutch post-myocardial infarction patients

PurposeWe examined the relation between diet quality, its components and kidney function decline in post-myocardial infarction (MI) patients, and we explored differences by genetic risk of chronic kidney disease (CKD).MethodsWe analysed 2169 patients from the Alpha Omega Cohort (aged 60–80 years, 81% male). Dietary intake was assessed at baseline (2002–2006) using a validated food-frequency questionnaire and diet quality was defined using the Dutch Healthy Diet Cardiovascular Disease (DHD-CVD) index. We calculated 40-months change in estimated glomerular filtration rate (eGFR, mL/min per 1.73m2). We constructed a weighted genetic risk score (GRS) for CKD using 88 single nucleotide polymorphisms previously linked to CKD. Betas with 95%-confidence intervals (CIs) were obtained using multivariable linear regression models for the association between DHD-CVD index and its components and eGFR change, by GRS.ResultsThe average DHD-CVD index was 79 (SD 15) points and annual eGFR decline was 1.71 (SD 3.86) mL/min per 1.73 m2. The DHD-CVD index was not associated with annual eGFR change (per 1-SD increment in adherence score: -0.09 [95% CI -0.26,0.08]). Results for adherence to guidelines for red meat showed less annual eGFR decline (per 1-SD: 0.21 [0.04,0.38]), whereas more annual eGFR decline was found for legumes and dairy (per 1-SD: -0.20legumes [-0.37,-0.04] and − 0.18dairy [-0.34,-0.01]). Generally similar results were obtained in strata of GRS.ConclusionThe DHD-CVD index for overall adherence to Dutch dietary guidelines for CVD patients was not associated with kidney function decline after MI, irrespective of genetic CKD risk. The preferred dietary pattern for CKD prevention in CVD patients warrants further research.

Gestational Exposure to Maternal Systemic Glucocorticoids and Childhood Risk of CKD

Background & ObjectivesThe potential effects of antenatal glucocorticoid exposure on the health of children are unclear. We examined the association of gestational exposure to maternal systemic glucocorticoids (SG) and the risk of developing chronic kidney disease (CKD) in childhood. Study designRetrospective cohort study. Setting & ParticipantsNewborns cared for at the largest healthcare delivery system in Taiwan between 2004 and 2018. ExposureMaternal prescriptions for SG between the last menstrual period and birth as a proxy for gestational exposure. OutcomeIncidence of childhood CKD, including congenital anomalies of the kidney and urinary tract (CAKUT) and other kidney diseases (non-CAKUT) over 10 years. Analytical ApproachCox proportional hazards models with stabilized inverse probability of treatment weighting and robust sandwich estimator were used to estimate the average association between SG and incident CKD after adjustment for offspring characteristics (aHR). ResultsAmong 23,363 singleton-born children, gestational SG exposure was significantly associated with a higher risk of childhood CKD (aHR, 1.69 [95% CI, 1.01–2.84]). Stratified analyses showed stronger associations between SG and childhood CKD within the strata of birth <37 weeks gestational age (aHR, 2.38 [95% CI, 1.19–4.78]), male sex (aHR, 1.89 [95% CI, 1.00–3.55]), gestational exposure in the second trimester (aHR, 6.70 [95% CI, 2.17–20.64]), and total dose >24 mg hydrocortisone equivalent (aHR, 1.91 [95% CI, 1.05–3.47). LimitationsStudy was limited to the Taiwan healthcare delivery system and childhood CKD events through age 10 years. ConclusionsThe findings of this study suggest that gestational exposure to systemic glucocorticoids is associated with the occurrence of kidney disease in childhood. If these findings are confirmed, they may inform clinicians who are considering prescribing SG during pregnancy.