scholarly journals Urinary mitochondrial DNA is a biomarker of mitochondrial disruption and renal dysfunction in acute kidney injury

2015 ◽  
Vol 88 (6) ◽  
pp. 1336-1344 ◽  
Author(s):  
Ryan M. Whitaker ◽  
L. Jay Stallons ◽  
Joshua E. Kneff ◽  
Joseph L. Alge ◽  
Jennifer L. Harmon ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Mitochondrial Dna ◽  
Renal Dysfunction ◽  
Kidney Injury ◽  
Mitochondrial Disruption

scholarly journals Urinary Mitochondrial DNA Identifies Renal Dysfunction and Mitochondrial Damage in Sepsis-Induced Acute Kidney Injury

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Qiongyuan Hu ◽  
Jianan Ren ◽  
Huajian Ren ◽  
Jie Wu ◽  
Xiuwen Wu ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Mitochondrial Dna ◽  
Mitochondrial Dysfunction ◽  
Renal Dysfunction ◽  
Renal Injury ◽  
Cecal Ligation ◽  
Surrogate Marker ◽  
Kidney Injury ◽  
Plasma Creatinine ◽  
Acute Renal Dysfunction

Background. Recent animal studies have shown that mitochondrial dysfunction initiates and accelerates renal injury in sepsis, but its role in sepsis remains unknown. Mitochondrial stress or dying cells can lead to fragmentation of the mitochondrial genome, which is considered a surrogate marker of mitochondrial dysfunction. Therefore, we evaluated the efficiency of urinary mitochondrial DNA (UmtDNA) as a marker of renal dysfunction during sepsis-induced acute kidney injury (AKI). Methods. We isolated DNA from plasma and urine of patients. mtDNA levels were quantified by quantitative PCR. Sepsis patients were divided into no AKI, mild AKI, and severe AKI groups according to RIFLE criteria. Additionally, cecal ligation and puncture (CLP) was established in rats to evaluate the association between UmtDNA and mitochondrial function. Results. A total of 52 (49.5%) developed AKI among enrolled sepsis patients. Increased systemic mtDNA did not correlate with systemic inflammation or acute renal dysfunction in sepsis patients, while AKI did not have an additional effect on circulating mtDNA levels. In contrast, UmtDNA was significantly enriched in severe AKI patients compared with that in the mild AKI or no AKI group, positively correlated with plasma creatinine, urinary neutrophil gelatinase-associated lipocalin, and kidney injury molecule-1, and inversely with the estimated glomerular filtration rate. Additionally, UmtDNA increased in rats following CLP-induced sepsis. UmtDNA was predictive of AKI development and correlated with plasma creatinine and blood urea nitrogen in the rat sepsis model. Finally, the UmtDNA level was inversely correlated with the cortical mtDNA copy number and relative expression of mitochondrial gene in the kidney. Conclusion. An elevated UmtDNA level correlates with mitochondrial dysfunction and renal injury in sepsis patients, indicating renal mitochondrial injury induced by sepsis. Therefore, UmtDNA may be regarded as a valuable biomarker for the occurrence of AKI and the development of mitochondria-targeted therapies following sepsis-induced AKI.

Mitochondrial DNA is Released in Urine of SIRS Patients With Acute Kidney Injury and Correlates With Severity of Renal Dysfunction

Shock ◽  
2018 ◽  
Vol 49 (3) ◽  
pp. 301-310 ◽  
Author(s):  
Marcel P.B. Jansen ◽  
Wilco P. Pulskens ◽  
Loes M. Butter ◽  
Sandrine Florquin ◽  
Nicole P. Juffermans ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Mitochondrial Dna ◽  
Renal Dysfunction ◽  
Kidney Injury

scholarly journals Mitochondrial DNA in Acute Kidney Injury

Shock ◽  
2018 ◽  
Vol 49 (3) ◽  
pp. 352-353 ◽  
Author(s):  
Lukas Martin ◽  
Christoph Thiemermann
Keyword(s):  
Acute Kidney Injury ◽  
Mitochondrial Dna ◽  
Kidney Injury

scholarly journals Impact of Cardiac Function Improvement on Cardiac Surgery Associated Acute Kidney Injury for Patients with Preoperative Renal Dysfunction

2020 ◽  
Author(s):  
Jiarui Xu ◽  
Xin Chen ◽  
Jing Lin ◽  
Yang Li ◽  
Bo Shen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Function ◽  
Cardiac Surgery ◽  
Cardiac Function ◽  
Renal Dysfunction ◽  
Significant Risk ◽  
Kidney Injury ◽  
Normal Function ◽  
Function Group ◽  
Postoperative Aki

Abstract Background: We aim to investigate whether the postoperative cardiac function improve or not would affect the risk of cardiac surgery associated acute kidney injury (AKI) for patients with preoperative renal dysfunction. Method: Data from patients underwent cardiac surgery from April 2012 to February 2016 were collected. Renal dysfunction was defined as preoperative SCr >1.2 mg/dL (females) or >1.5 mg/dL (males). Patients were grouped as normal renal function group, renal dysfunction with chronic kidney disease (CKD group), and non CKD group. △LVEF=postoperative LVEF - preoperative LVEF. Cardiac function improved was defined as △LVEF ≥10. Patients were further divided into non CKD & cardiac function improved (non CKD+), non CKD & cardiac function not improved (non CKD-), CKD & cardiac function improved (CKD+) and CKD & cardiac function not improved (CKD-) subgroups.Results: A total of 8,661 patients were allocated as normal renal function (n=7,903), non CKD(n = 662) and CKD (n = 136) groups. Both non CKD and CKD groups had higher AKI incidence than normal function group (39.5% vs 30.0%, P < 0.001; 61.8% vs 30.0%, P<0.001), and non CKD+ group had the similar AKI incidence with normal function group (30.9% vs 30.0%, P=0.729). Multivariate logistic regression analysis revealed that non CKD-, CKD+ and CKD- were significant risk factors, whereas non CKD+ was not a significant risk factor for postoperative AKI. The SCr at discharge in non CKD+ subgroup was significantly lower than its preoperative SCr (1.4 ± 0.8 vs 1.7 ± 0.9 mg/dL, P = 0.020).Conclusions: For renal dysfunction patients with no CKD, the risk of postoperative AKI did not exist if the cardiac function improved after surgery. For CKD patients, the risk of postoperative AKI increase regardless whether the cardiac function improved or not.

scholarly journals Long-Term Outcomes and Risk Factors of Renal Failure Requiring Dialysis after Heart Transplantation: A Nationwide Cohort Study

2020 ◽  
Vol 9 (8) ◽  
pp. 2455 ◽  
Author(s):  
Tsai-Jung Wang ◽  
Ching-Heng Lin ◽  
Hao-Ji Wei ◽  
Ming-Ju Wu
Keyword(s):  
Risk Factors ◽  
Acute Kidney Injury ◽  
Renal Failure ◽  
Heart Transplantation ◽  
Renal Dysfunction ◽  
Heart Transplant ◽  
Kidney Injury ◽  
Dialysis Patients ◽  
Term Survival

Acute kidney injury and renal failure are common after heart transplantation. We retrospectively reviewed a national cohort and identified 1129 heart transplant patients. Patients receiving renal replacement therapy after heart transplantation were grouped into the dialysis cohort. The long-term survival and risk factors of dialysis were investigated. Patients who had undergone dialysis were stratified to early or late dialysis for subgroup analysis. The mean follow-up was five years, the incidence of dialysis was 28.4% (21% early dialysis and 7.4% late dialysis). The dialysis cohort had higher overall mortality compared with the non-dialysis cohort. The hazard ratios of mortality in patients with dialysis were 3.44 (95% confidence interval (CI), 2.73–4.33) for all dialysis patients, 3.58 (95% CI, 2.74–4.67) for early dialysis patients, and 3.27 (95% CI, 2.44–4.36; all p < 0.001) for late dialysis patients. Patients with diabetes mellitus, chronic kidney disease, acute kidney injury, and coronary artery disease were at higher risk of renal failure requiring dialysis. Cardiomyopathy, hepatitis B virus infection, and hyperlipidemia treated with statins were associated with a lower risk of renal dysfunction requiring early dialysis. The use of Sirolimus and Mycophenolate mofetil was associated with a lower incidence of late dialysis. Renal dysfunction requiring dialysis after heart transplantation is common in Taiwan. Early and late dialysis were both associated with an increased risk of mortality in heart transplant recipients.

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