scholarly journals Comparison of multiparametric magnetic resonance imaging sequences with laboratory parameters for prognosticating renal function in chronic kidney disease

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tsutomu Inoue ◽  
Eito Kozawa ◽  
Masahiro Ishikawa ◽  
Daichi Fukaya ◽  
Hiroaki Amano ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Chronic Kidney Disease ◽  
Glomerular Filtration Rate ◽  
Magnetic Resonance ◽  
Kidney Disease ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Disease Course ◽  
Resonance Imaging ◽  
Mri Sequences

AbstractMagnetic resonance imaging (MRI) is playing an increasingly important role in evaluating chronic kidney disease (CKD). It has the potential to be used not only for evaluation of physiological and pathological states, but also for prediction of disease course. Although different MRI sequences have been employed in renal disease, there are few studies that have compared the different sequences. We compared several multiparametric MRI sequences, and compared their results with the estimated glomerular filtration rate. Principal component analysis showed a similarity between T1 values and tissue perfusion (arterial spin labelling), and between fractional anisotropy (diffusion tensor imaging) and apparent diffusion coefficient values (diffusion-weighted imaging). In multiple regression analysis, only T2* values, derived from the blood oxygenation level-dependent (BOLD) MRI sequence, were associated with estimated glomerular filtration rate slope after adjusting for degree of proteinuria, a classic prognostic factor for CKD. In receiver operating characteristic curve analysis, T2* values were a good predictor of rapid deterioration, regardless of the degree of proteinuria. This suggests further study of the use of BOLD-derived T2* values in the workup of CKD, especially to predict the disease course.

scholarly journals Tissue Sodium Storage in Patients With Heart Failure: A New Therapeutic Target?

2021 ◽  
Vol 14 (11) ◽  
Author(s):  
Sandrine Lemoine ◽  
Fabio R. Salerno ◽  
Alireza Akbari ◽  
Robert S. McKelvie ◽  
Christopher W. McIntyre
Keyword(s):  
Magnetic Resonance Imaging ◽  
Chronic Kidney Disease ◽  
Glomerular Filtration Rate ◽  
Magnetic Resonance ◽  
Kidney Disease ◽  
Glomerular Filtration ◽  
Filtration Rate ◽  
Sodium Content ◽  
Resonance Imaging ◽  
Tissue Sodium

Background: Preclinical data suggest sodium deposited (without water) in tissues may lead to aberrant remodeling and systemic inflammation, independently of fluid overload in patients with heart failure (HF). Tissue salt storage can be measured noninvasively and quantitatively with 23 Na-magnetic resonance imaging. We aimed to investigate the possibility that patients with HF complicated by renal dysfunction are subject to higher tissue sodium concentration exposure than patients with chronic kidney disease alone. Methods: We conducted an exploratory study including 18 patients with HF, 34 hemodialysis patients (with no meaningful renal clearance of sodium), and 31 patients with chronic kidney disease, with glomerular filtration rate matched to the patients with HF. Every patient underwent 23 Na-magnetic resonance imaging of the calf, to quantify tissue sodium and allow comparison among the 3 patient groups. Results: There were no differences in age, sex, and body mass index between groups. Median (interquartile range) skin sodium content in HF (31 [23–37] mmol/L) was very high and indistinguishable from skin sodium content in hemodialysis patients (30 [22–35] mmol/L), P =0.6. Patients with HF exhibited significantly higher skin sodium content than matched estimated glomerular filtration rate chronic kidney disease patients (22 [19–26] mmol/L), P =0.005. Median muscle sodium content in patients with HF was significantly higher than in patients with chronic kidney disease, P =0.002. There was no relationship with estimated glomerular filtration rate in patients with HF. We report a significant correlation between skin sodium and urinary sodium ( P =0.04) but no correlation with muscle sodium. Patients who were assessed as being volume depleted (sodium excretion fraction <1%) had lower skin sodium content than patients with sodium excretion fraction >1% ( P =0.03). Conclusions: We have demonstrated that patients with HF characteristically have very high levels of skin sodium storage, comparable to well-characterized extreme levels seen in patients with end-stage kidney disease requiring hemodialysis. 23 Na-magnetic resonance imaging may allow precision medicine in the management of this challenging group of patients with HF. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03004547.

Pathophysiological impact of serum fibroblast growth factor 23 in patients with nonischemic cardiac disease and early chronic kidney disease

2014 ◽  
Vol 307 (10) ◽  
pp. H1504-H1511 ◽  
Author(s):  
Miki Imazu ◽  
Hiroyuki Takahama ◽  
Hiroshi Asanuma ◽  
Akira Funada ◽  
Yasuo Sugano ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Glomerular Filtration Rate ◽  
Growth Factor ◽  
Kidney Disease ◽  
Glomerular Filtration ◽  
Fibroblast Growth Factor ◽  
Cardiac Disease ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Fibroblast Growth

Although the important role of fibroblast growth factor (FGF)23 on cardiac remodeling has been suggested in advanced chronic kidney disease (CKD), little is known about serum (s)FGF23 levels in patients with heart failure (HF) due to nonischemic cardiac disease (NICD) and early CKD. The present study aimed to investigate sFGF23 levels in NICD patients and identify the responsible factors for the elevation of sFGF23 levels. We prospectively measured sFGF23 levels in consecutive hospitalized NICD patients with early CKD (estimated glomerular filtration rate ≥ 40 ml·min−1·1.73 m−2) and analyzed the data of both echocardiography and right heart catheterization. Of the 156 NICD patients (estimated glomerular filtration rate range: 41–128 ml·min−1·1.73 m−2), the most severe HF symptom (New York Heart Association class III-IV, 53% vs. 33%, P = 0.015) was found in the above median sFGF23 (39.1 pg/ml) group compared with the below median sFGF23 group. sFGF23 levels were higher in patients with HF hospitalization history compared with those without HF [median: 46.8 (interquartile range: 38.8–62.7) vs. 34.7 (interquartile range: 29.6–42.4) pg/ml, P < 0.0001]. In the multivariate analysis, HF hospitalization was independently related to elevated sFGF23 levels ( P = 0.022). Both systolic dysfunction and high plasma aldosterone concentration were identified as predictors of high sFGF23 levels ( P < 0.05). Among the neurohormonal parameters, elevated sFGF23 levels were the only factor to predict a declining left ventricular ejection fraction ( P = 0.001). These findings suggest that the progression of HF per se contributes to the elevation of sFGF23 levels even in the early stages of CKD, which leads to further myocardial dysfunction, potentially creating a vicious cycle.

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