{"title":"PI3Kα in the pathogenesis and treatment of lupus nephritis.","authors":"Vivek Kasinath, George C Tsokos","doi":"10.1016/j.kint.2024.11.004","DOIUrl":"10.1016/j.kint.2024.11.004","url":null,"abstract":"","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142668445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Byeongzu Ghang, Jino Park, Ji Sung Lee, Joon Seo Lim, Hyunwoo Kim, David F L Liew, Jinseok Kim, Duk-Hee Kang, Bin Yoo
{"title":"Post-hoc analysis of the CARES trial suggests delayed progression of chronic kidney disease in patients with gout during urate-lowering therapy.","authors":"Byeongzu Ghang, Jino Park, Ji Sung Lee, Joon Seo Lim, Hyunwoo Kim, David F L Liew, Jinseok Kim, Duk-Hee Kang, Bin Yoo","doi":"10.1016/j.kint.2024.10.022","DOIUrl":"https://doi.org/10.1016/j.kint.2024.10.022","url":null,"abstract":"<p><p>Based on the hypothesis that hyperuricemia is a modifiable risk factor for chronic kidney disease (CKD) progression, there is an expectation that urate-lowering therapy (ULT) could delay the progression of CKD. Here, we investigated changes in kidney function and the association of the serum uric acid (sUA) level and kidney function during ULT in patients with gout. To do this we conducted post-hoc analysis on patients who received ULT with either febuxostat or allopurinol for more than six months in the CARES trial. The estimated glomerular filtration rate (eGFR) slope (annual rate of change in eGFR) was calculated using the CKD- EPI creatinine equation and linear mixed modeling. Among the 5,002 patients with gout, 3,264 (65.3%) demonstrated an increased eGFR while receiving ULT over a median follow-up of 2.5 years. Increased average sUA levels were significantly associated with declines in eGFR slope (per 1 mg/dL increase, (adjusted beta of -0.1912). Propensity score matched analysis demonstrated a significant association between low average sUA levels below 6 mg/dL during ULT and a reduced risk of eGFR decline (adjusted odds ratio: 0.66, 95% confidence interval 0.57-0.77). Despite the well-documented natural decline of eGFR over time in the general population, more than half of the patients enrolled in the CARES trial did not experience declines in eGFR while receiving ULT. Thus, our study shows maintaining low sUA levels with ULT was significantly associated with a decreased risk of CKD progression in patients with gout.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A randomized controlled trial evaluated the efficacy and safety of apixaban for prevention of recurrent thrombosis after thrombectomy of hemodialysis vascular access.","authors":"Tsung-Yu Ko, Chih-Cheng Wu, Mu-Yang Hsieh, Chung-Wei Yang, Chi-Hung Cheng, Chun-Kai Chen, Hsien-Li Kao","doi":"10.1016/j.kint.2024.10.023","DOIUrl":"https://doi.org/10.1016/j.kint.2024.10.023","url":null,"abstract":"<p><p>Dialysis vascular access thrombosis poses a substantial challenge for individuals undergoing hemodialysis. The efficacy and safety of apixaban, a direct oral coagulation factor Xa inhibitor, in preventing recurrent access thrombosis have yet to be explored. Here, a multicenter randomized control study (NCT04489849) enrolled hemodialysis patients to evaluate this who underwent successful endovascular thrombectomy within 48 hours. Participants were assigned to standard care or standard care plus apixaban, 2.5 mg twice daily for three months. The trial design involved open-label administration, with independent adjudication of endpoints. The primary efficacy endpoint was recurrent access thrombosis within three months after thrombectomy. A total of 186 patients with well-balanced baseline characteristics were enrolled, 93 randomized to the apixaban group and 93 to the control group. The apixaban group demonstrated a significantly lower rate of access thrombosis at three months than the control group (24.0% vs. 40.8%; hazard ratio, 0.52 [95% confidence interval 0.31-0.88]), along with a significantly better primary patency failure rate (32.2% vs. 49.5%, 0.57 [0.36-0.91]). Safety outcomes showed comparable death rates and major bleeding incidents but significantly higher incidence of minor bleeding in the apixaban group (22.6% vs. 7.5%). The effect of apixaban did not show interaction in subgroups of different access types, antiplatelet usage, severity of comorbidities, or history of thrombosis. Thus, apixaban effectively reduced the risk of recurrent thrombosis in hemodialysis vascular access post-thrombectomy. Despite a minor increase in bleeding adverse effects, the net clinical benefit favors the use of apixaban in this context.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142647838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An S De Vriese, Sanjeev Sethi, Fernando C Fervenza
{"title":"Lupus nephritis: redefining the treatment goals.","authors":"An S De Vriese, Sanjeev Sethi, Fernando C Fervenza","doi":"10.1016/j.kint.2024.10.018","DOIUrl":"10.1016/j.kint.2024.10.018","url":null,"abstract":"<p><p>The course of proliferative lupus nephritis is characterized by flares of activity alternating with periods of quiescence against a background of chronic immune dysregulation. An accurate assessment of disease activity is of unassailable importance to tailor therapy. In the present communication, we discuss the available clinical, serologic, and histologic tools to evaluate disease activity and how they may be applied to redefine the treatment goals in lupus nephritis. Traditionally, treatment response is judged by the degree of proteinuria reduction and improvement of kidney function, but this fails to differentiate ongoing inflammatory disease from chronic damage. Despite intensive research, no novel biomarker has proved useful for clinical practice, and we continue to rely on anti-double-stranded DNA antibody levels to assess serologic activity. Repeat kidney biopsies sometimes reveal persistent inflammation despite apparent clinical remission, giving credibility to the conviction that histologic remission should be a treatment goal and protocol biopsies be part of the decision-making process. However, the discrepancies between clinical and histologic responses to therapy can be explained by persistent systemic autoimmunity with low-grade immune complex deposition or, alternatively, by delayed clearance of intrarenal inflammation once immunologic remission has been achieved. Because persistent immune dysregulation is the motor of disease activity in lupus nephritis, it should be the principal focus of therapy and monitoring. We propose to replace the traditional induction-remission maintenance protocol by a more dynamic and individualized approach and aim for 3 treatment goals, concomitantly rather than sequentially: (i) clinical remission, by attenuating renal inflammation, using microscopic hematuria, proteinuria, estimated glomerular filtration rate, and complement levels as biomarkers; (ii) immunologic remission, by decreasing immune complex generation, using anti-double-stranded DNA antibody as a biomarker; and (iii) preservation of kidney function, by curtailing chronic kidney damage, using estimated glomerular filtration rate slope as a biomarker.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Monica Suet Ying Ng, Dylan Burger, Per Svenningsen, Elena Martens, Uta Erdbrügger, Fabian Braun
{"title":"Unlocking the potential of extracellular vesicles in nephrology: what does MISEV2023 add?","authors":"Monica Suet Ying Ng, Dylan Burger, Per Svenningsen, Elena Martens, Uta Erdbrügger, Fabian Braun","doi":"10.1016/j.kint.2024.07.037","DOIUrl":"10.1016/j.kint.2024.07.037","url":null,"abstract":"<p><p>Extracellular vesicles, small membrane-bound packages secreted by virtually all cells of the body, have become a focus of interest in nephrology over the recent years. After the first characterization of their proteomic and transcriptomic content, scientific attention shifted toward their potential as biomarkers for kidney diseases both as diagnostic and monitoring tools. More recently, researchers have begun exploring whether extracellular vesicles mediate intercellular signaling inside the nephron and between the kidney and other organs throughout the body. Nevertheless, the field of extracellular vesicle research has struggled to translate major findings to the clinical context due to numerous methods to separate extracellular vesicles, yielding fractions of different sizes and varying purity, unclear terminology, and, hence, limitations concerning reproducibility. The International Society of Extracellular Vesicles, therefore, has striven to reduce these barriers by an ongoing initiative to increase rigor and standardization of extracellular vesicle research. The \"Minimal Information for Studies of Extracellular Vesicles\" guideline is the result of this initiative and, in its now third iteration, provides the most concise suggestions for investigating extracellular vesicles to date. This mini review illustrates the advances made in extracellular vesicle research in nephrology so far using informative examples, outlines the advances made by the former Minimal Information for Studies of Extracellular Vesicles guidelines, and shows what potential using the latest iteration holds.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mark Canney, Mohammad Atiquzzaman, Yuyan Zheng, Dilshani Induruwage, Yinshan Zhao, Lee Er, Christopher B Fordyce, Sean J Barbour
{"title":"Evaluating the risk of cardiovascular events associated with different immunosuppression treatments for glomerular diseases.","authors":"Mark Canney, Mohammad Atiquzzaman, Yuyan Zheng, Dilshani Induruwage, Yinshan Zhao, Lee Er, Christopher B Fordyce, Sean J Barbour","doi":"10.1016/j.kint.2024.10.015","DOIUrl":"10.1016/j.kint.2024.10.015","url":null,"abstract":"<p><p>Patients with glomerular disease are at high risk of cardiovascular disease but the contribution of immunosuppression to this risk is unclear. In this retrospective cohort study of 1912 patients (comprised of 759 with IgA nephropathy, 540 with focal segmental glomerulosclerosis, 387 with membranous nephropathy and 226 with minimal change disease) from British Columbia, Canada, we evaluated the association between exposure to specific immunosuppressive medications and a composite outcome including coronary artery, cerebrovascular and peripheral arterial events. Survival models were adjusted for baseline cardiovascular risk factors, type of glomerular disease, estimated glomerular filtration rate (eGFR) and proteinuria over time. During a median follow-up of 6.8 years, 212 patients (11.1%) experienced the primary outcome. Corticosteroid exposure was not significantly associated with the primary outcome after adjusting for cardiovascular risk factors. In fully adjusted models, cumulative calcineurin inhibitor exposure at modest (150-300 defined daily doses [DDD]) and higher (300 or more DDD) doses were associated with a 2-fold higher risk of cardiovascular events (hazard ratio 2.98, 95% confidence interval 1.27-6.95) and (2.78, 1.32-5.84), respectively. A peak daily dose of antimetabolite (azathioprine, mycophenolate mofetil and mycophenolate sodium) of 0.5 or more DDD was associated with higher risk of cardiovascular events after adjustment for baseline risk factors and type of glomerular disease, but not after adjusting for time-varying eGFR and proteinuria (1.70, 0.91-3.20). Each 10 grams of cumulative cyclophosphamide exposure was associated with a 1.5-fold higher risk of cardiovascular events in a fully adjusted model (1.46, 1.22-1.75) Thus, our findings suggest that immunosuppressive therapies used in the treatment of glomerular disease may have different cardiovascular risk profiles, which should be considered when deciding on immunosuppression for individual patients and as a safety endpoint in future clinical trials.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rebecca Preston, Ruby Chrisp, Michal Dudek, Mychel R P T Morais, Pinyuan Tian, Emily Williams, Richard W Naylor, Bernard Davenport, Dharshika R J Pathiranage, Emma Benson, David G Spiller, James Bagnall, Leo Zeef, Craig Lawless, Syed Murtuza Baker, Qing-Jun Meng, Rachel Lennon
{"title":"The glomerular circadian clock temporally regulates basement membrane dynamics and the podocyte glucocorticoid response.","authors":"Rebecca Preston, Ruby Chrisp, Michal Dudek, Mychel R P T Morais, Pinyuan Tian, Emily Williams, Richard W Naylor, Bernard Davenport, Dharshika R J Pathiranage, Emma Benson, David G Spiller, James Bagnall, Leo Zeef, Craig Lawless, Syed Murtuza Baker, Qing-Jun Meng, Rachel Lennon","doi":"10.1016/j.kint.2024.10.016","DOIUrl":"10.1016/j.kint.2024.10.016","url":null,"abstract":"<p><p>Kidney physiology shows diurnal variation, and a disrupted circadian rhythm is associated with kidney disease. However, it remains largely unknown whether glomeruli, the filtering units in the kidney, are under circadian control. Here, we investigated core circadian clock components in glomeruli, together with their rhythmic targets and modes of regulation. With clock gene reporter mice, cell-autonomous glomerular clocks which likely govern rhythmic fluctuations in glomerular physiology were identified. Using circadian time-series transcriptomic profiling, the first circadian glomerular transcriptome with 375 rhythmic transcripts, enriched for extracellular matrix and glucocorticoid receptor signaling ontologies, were identified. Subsets of rhythmic matrix-related genes required for basement membrane assembly and turnover, and circadian variation in matrix ultrastructure, coinciding with peak abundance of rhythmic basement membrane proteins, were uncovered. This provided multiomic evidence for interactions between glomerular matrix and intracellular time-keeping mechanisms. Furthermore, glucocorticoids, which are frequently used to treat glomerular disease, reset the podocyte clock and induce rhythmic expression of potential glomerular disease genes associated with nephrotic syndrome that included Nphs1 (nephrin) and Nphs2 (podocin). Disruption of the clock with pharmacological inhibition altered the expression of these disease genes, indicating an interplay between clock gene expression and key genes required for podocyte health. Thus, our results provide a strong basis for future investigations of the functional implications and therapeutic potential of chronotherapy in glomerular health and disease.</p>","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":" ","pages":""},"PeriodicalIF":14.8,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142623195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dialysis modality and quality of life: more answers yet more questions.","authors":"Hiba Hamdan,Baback Roshanravan","doi":"10.1016/j.kint.2024.08.028","DOIUrl":"https://doi.org/10.1016/j.kint.2024.08.028","url":null,"abstract":"Persons with end-stage kidney disease treated with dialysis experience distressing reductions in quality of life and increased mortality. Few large, randomized trials in nephrology have reported on health-related quality of life. Rose et al. report beneficial effects of high-volume hemodiafiltration versus high-flux hemodialysis on secondary end points of health-related quality of life in the CONVINCE trial (Comparison of High Dose Hemodiafiltration with High Flux Hemodialysis Trial). These results raise questions regarding hemodiafiltration as a potential modality to preserve health-related quality of life in end-stage kidney disease.","PeriodicalId":17801,"journal":{"name":"Kidney international","volume":"17 1","pages":"792-794"},"PeriodicalIF":19.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142486260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}