Measurements of renal shear wave velocities in chronic kidney disease patients

2017 ◽  
Vol 59 (7) ◽  
pp. 884-890 ◽  
Author(s):  
Yutaka Sasaki ◽  
Yoshiki Hirooka ◽  
Hiroki Kawashima ◽  
Takuya Ishikawa ◽  
Kyosuke Takeshita ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Function ◽  
Kidney Disease ◽  
Shear Wave ◽  
Interstitial Fibrosis ◽  
Left Kidney ◽  
Shear Wave Elastography ◽  
University Hospital ◽  
Success Rates ◽  
The Right

Background Chronic kidney disease (CKD) patients have advanced glomerulosclerosis and renal interstitial fibrosis. Shear wave elastography (SWE) is useful to diagnose liver fibrosis. However, there are few data available regarding evaluation of kidney function on the use of SWE. Purpose To assess the utility of SWE by evaluating the correlation between renal function and renal elasticity using SWE. Material and Methods A total of 187 participants who had available serum creatinine levels and also underwent SWE of the kidney using a transabdominal ultrasonography were recruited at Nagoya University Hospital. We measured the depth of the shear wave (SW) in the right and left kidneys and calculated the measurement success rates. The glomerular filtration rate (GFR) classification and shear wave value (SWV) were compared. Results The success rates of the right and left kidneys were 93.6% and 71.6%, respectively. Based on these results, the correlation between GFR classification and SWV were analyzed in only the right kidneys because the success rates and the number of enrolled patients were low for the left kidney. There were significant differences found between G1 and G3a, G2 and G3a, G3a and G3b, G3a and G4, and G3a and G5. SWV significantly negatively and positively correlated with the G2–G3a and G3a–G3b classifications. Conclusion There is no correlation between renal function and SW. However, we can diagnose the progression to the CKD stages G3a and G3b by observing the changes over time using the SWV.

scholarly journals Renal Ultrasound Elastography: A Review of the Previous Reports on Chronic Kidney Diseases

2021 ◽  
Vol 11 (20) ◽  
pp. 9677
Author(s):  
Takuji Iyama ◽  
Takaaki Sugihara ◽  
Tomoaki Takata ◽  
Hajime Isomoto
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Function ◽  
Kidney Disease ◽  
Shear Wave ◽  
Malignant Tumors ◽  
Interstitial Fibrosis ◽  
Kidney Diseases ◽  
Shear Wave Elastography ◽  
Ultrasound Elastography ◽  
Renal Ultrasound

The early detection of a kidney injury is essential to protect against the progression of kidney damage owing to the progressive nature of chronic kidney disease. A renal biopsy is the gold standard for the assessment of pathological alterations such as interstitial fibrosis and glomerulosclerosis. However, there are concerns regarding potential complications including bleeding and a reduction in renal function. Ultrasound elastography is an ideal modality for assessing the alterations in various organs and diagnosing malignant tumors. This technique has the potential to help detect early changes in renal function and pathological alterations. However, the careful application and interpretation of this technique in the kidney is required because of its complex hemodynamics and architecture. Shear wave elastography is the most widely investigated technique among ultrasound elastography. This review aims to summarize the previous investigations of the kidney using shear wave elastography, particularly for renal malignancy, kidney transplantation, and chronic kidney disease. Additionally, we have highlighted the influencing factors concerning the practical measurement of renal elasticity.

scholarly journals Quantitative Evaluation of Real-Time Shear-Wave Elastography under Deep Learning in Children with Chronic Kidney Disease

2022 ◽  
Vol 2022 ◽  
pp. 1-9
Author(s):  
Jie Zhang ◽  
Cuirong Duan ◽  
Xingxing Duan ◽  
Yuan Hu ◽  
Jinqiao Liu ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Deep Learning ◽  
Kidney Disease ◽  
Real Time ◽  
Shear Wave ◽  
Left Kidney ◽  
Shear Wave Elastography ◽  
Control Group ◽  
The Difference ◽  
The Right

Objective. This research was to study the application value of real-time shear wave elastography (SWE) quantitative evaluation based on deep learning (DL) in the diagnosis of chronic kidney disease (CKD) in children. Methods. 60 children with pathological diagnoses of CKD were selected as a CKD group. During the same period, 45 healthy children for physical examination were selected as the control group. The application value of real-time shear-wave elastography based on DL in the evaluation of CKD in children was explored by comparing the differences between the two groups. Results. It was found that the elastic modulus values of the middle and lower parenchyma of the left kidney and right kidney in the case group were (22.02 ± 10.98) kPa and (21.99 ± 11.87) kPa, respectively, which were substantially higher compared with (4.61 ± 0.47) kPa and (4.50 ± 0.59) kPa in the control group. Young’s modulus (YM) of the middle and lower parenchyma of the left kidney in patients with CKD stages 3 to 5 was 13.27 ± 0.83, 24.21 ± 5.69, and 31.67 ± 3.82, respectively, and that of the right kidney was 17.26 ± 0.98, 26.76 ± 7.22, and 32.37 ± 4.27, respectively, and the difference was significant ( P  < 0.05). In patients with moderate and severe CKD, the YM values of the middle and lower parenchyma of the left kidney were 17.27 ± 0.83, 27.93 ± 6.49, and those of the right kidney were 17.26 ± 0.98, 29.56 ± 6.49, respectively, and the difference was statistically significant ( P  < 0.05). The serum creatinine (Scr) of the CKD group was substantially higher than that of the control group, and the estimated glomerular filtration rate (eGFR) level of the former was lower than that of the latter. However, there was no statistical difference between the YM values of the middle and lower parts of the left and right kidneys of the CKD group and the control group. Conclusion. The DL-based SWE is a new noninvasive, real-time, and quantitative detection method, which can effectively evaluate the stiffness of the kidney and help to better detect the progress of CKD as a clinical reference.

Histomorphometry of Feline Chronic Kidney Disease and Correlation With Markers of Renal Dysfunction

2012 ◽  
Vol 50 (1) ◽  
pp. 147-155 ◽  
Author(s):  
S. Chakrabarti ◽  
H. M. Syme ◽  
C. A. Brown ◽  
J. Elliott
Keyword(s):  
Blood Pressure ◽  
Chronic Kidney Disease ◽  
Image Analysis ◽  
Renal Function ◽  
Kidney Disease ◽  
Renal Dysfunction ◽  
Interstitial Fibrosis ◽  
Glomerular Hypertrophy ◽  
Renal Lesions ◽  
Postmortem Examinations

Chronic kidney disease is common in geriatric cats, but most cases have nonspecific renal lesions, and few studies have correlated these lesions with clinicopathological markers of renal dysfunction. The aim of this study was to identify the lesions best correlated with renal function and likely mediators of disease progression in cats with chronic kidney disease. Cats were recruited through 2 first-opinion practices between 1992 and 2010. When postmortem examinations were authorized, renal tissues were preserved in formalin. Sections were evaluated by a pathologist masked to all clinicopathological data. They were scored semiquantitatively for the severity of glomerulosclerosis, interstitial inflammation, and fibrosis. Glomerular volume was measured using image analysis; the percentage of glomeruli that were obsolescent was recorded. Sections were assessed for hyperplastic arteriolosclerosis and tubular mineralization. Kidneys from 80 cats with plasma biochemical data from the last 2 months of life were included in the study. Multivariable linear regression ( P < .05) was used to assess the association of lesions with clinicopathological data obtained close to death. Interstitial fibrosis was the lesion best correlated with the severity of azotemia, hyperphosphatemia, and anemia. Proteinuria was associated with interstitial fibrosis and glomerular hypertrophy, whereas higher time-averaged systolic blood pressure was associated with glomerulosclerosis and hyperplastic arteriolosclerosis.

Case 17.15

2014 ◽  
pp. 819-819
Author(s):  
Christine U. Lee ◽  
James F. Glockner
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Left Kidney ◽  
Weighted Image ◽  
The Right ◽  
P 53

53-year-old woman with chronic kidney disease Coronal SSFSE image (Figure 17.15.1) demonstrates massive enlargement of the right kidney, which contains multiple fatty lesions as well as several round nodules. The left kidney is surgically absent. Coronal respiratory-triggered FSE T2-weighted image (Figure ...

scholarly journals Renal shear wave elastography for the assessment of nephron hypertrophy: a cross-sectional study in chronic kidney disease

2018 ◽  
Vol 45 (4) ◽  
pp. 571-576 ◽  
Author(s):  
Takuji Iyama ◽  
Tomoaki Takata ◽  
Masahiko Koda ◽  
Satoko Fukuda ◽  
Shotaro Hoi ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional

scholarly journals Shear wave elastography in chronic kidney disease: a pilot experience in native kidneys

2015 ◽  
Vol 16 (1) ◽  
Author(s):  
Anthony E. Samir ◽  
Andrew S. Allegretti ◽  
Qingli Zhu ◽  
Manish Dhyani ◽  
Arash Anvari ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Shear Wave ◽  
Shear Wave Elastography ◽  
Pilot Experience

scholarly journals BARDET — BIEDL SYNDROME WITH CONGENITAL KIDNEY MALFORMATION IN A 14-YEAR-OLD GIRL

2019 ◽  
Vol 26 (3) ◽  
pp. 129-134
Author(s):  
Anna V. Burlutskaya ◽  
Natalia V. Savelyeva
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Kidney Development ◽  
Clinical Symptoms ◽  
Left Kidney ◽  
Hereditary Disease ◽  
Symptomatic Therapy ◽  
Excretory Function ◽  
Kidney Malformation ◽  
The Right

Aim. To show the variety and severity of the clinical symptoms of a rare hereditary disease — Вardet — Biedle syndrome — in a14-year-old girl. Materials and methods. We carried out a retrospective analysis of anamnestic data, the course of the disease, laboratory and instrumental data, as well as the therapy of a 14-year-old patient with Вardet-Вiedlе syndrome. Results. A 14-year-old patient with hereditary Вardet — Вiedlе syndrome (polydactyly, mental retardation, progressive obesity, pigment retinopathy) was found to have a congenital abnormality of kidney development — hypoplasia and dysplasia of the only right kidney complicated by chronic secondary pyelonephritis with the development of chronic kidney disease. Urine tests revealed leukocyturia, bacteriuria and proteinuria. The echo-signs of diffuse changes in the parenchyma of the right kidney were found during the ultrasound kidney examination. The left kidney was not determined. The conclusion of dynamic renal scintigraphy: the image of the left kidney is not reliably visualized (a sharp decrease in the function or absence of the kidney), the preserved filtration function and a moderate decrease in the excretory function of the right kidney. Intoxication syndrome, leukocyturia, bacteriuria and proteinuria were relieved against the background of antibacterial (Ceftriaxone) and symptomatic therapy. Conclusion. We have described a clinical case of the Вardet — Вiedlе syndrome with congenital kidney malformation (impaired function), but with the normal structure of the internal reproductive organs and sexual development. In the future, due to the development of chronic kidney disease, the patient should receive specialized nephrological care, as well as be observed by endocrinologist due to a high risk of developing type 2 diabetes mellitus.

scholarly journals Shen Shuai II Recipe Attenuates Renal Interstitial Fibrosis by Improving Hypoxia via the IL-1β/c-Myc Pathway

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Liuyi Yang ◽  
Meng Wang ◽  
Yuan Zhou ◽  
Jing Yang ◽  
Chaoyang Ye ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Renal Failure ◽  
Renal Function ◽  
Chronic Renal Failure ◽  
Kidney Disease ◽  
Protein Expression ◽  
Interstitial Fibrosis ◽  
Renal Interstitial Fibrosis ◽  
Related Factors

Background. Renal interstitial fibrosis is a pathological manifestation of progression of chronic kidney disease induced by various factors. Shen Shuai II Recipe (SSR) has been used in clinical practice for more than 20 years, and clinical studies have confirmed that SSR significantly improves the renal function of patients with chronic kidney disease. However, the specific mechanisms underlying its efficacy require further research. This study aims to explore the influencing factors of renal interstitial fibrosis in the context of hypoxia via the IL-1β/c-Myc pathway and the potential molecular mechanisms of SSR intervention in vivo and in vitro. Methods. A rat model of chronic renal failure was developed by performing 5/6 (ablation/infarction, A/I) surgery on randomly selected, male Sprague Dawley rats. Thirty-six successfully modeled rats were randomly divided into three groups: 5/6 (A/I), 5/6 (A/I) + SSR, and 5/6 (A/I) + losartan. Another 12 rats were used as the sham group. After 8 weeks of the corresponding intervention, renal function, liver function, and protein expression of renal-fibrosis-related factors, HIF-1α, IL-1β, and c-Myc, were detected. In vitro analysis was performed using hypoxia-induced rat renal tubular epithelial cells (NRK-52E) and IL-1β-stimulated rat renal interstitial fibroblasts (NRK-49F). IL-1β concentration in the culture medium and IL-1β protein expression in hypoxic NRK-52E treated with different concentrations of SSR were investigated. Furthermore, we also studied the changes in protein expression of c-Myc and fibrosis-related factors after c-Myc gene silencing in IL-1β-stimulated NRK-49F treated with SSR. Results. Shen Shuai II Recipe significantly reduced RIF and downregulated the expression of HIF-1α, c-Myc, and IL-1β proteins in 5/6 (A/I) rats with chronic renal failure. It also inhibited IL-1β secretion from NRK-52E induced by hypoxia, which in turn inhibited fibroblast activation mediated by the IL-1β/c-Myc pathway, and finally reduced the overproduction of the extracellular matrix. Conclusion. The renoprotective effects of SSR in rats with chronic renal failure may be related to its inhibition of hypoxia via the IL-1β/c-Myc pathway. Thus, SSR is a potentially effective drug for delaying the progression of renal interstitial fibrosis.

scholarly journals The Risk of Tuberculosis Infection in Non-dialysis Chronic Kidney Disease Patients

2021 ◽  
Vol 8 ◽  
Author(s):  
Chia-Hsiang Li ◽  
Hung-Jen Chen ◽  
Wei-Chun Chen ◽  
Chih-Yen Tu ◽  
Te-Chun Hsia ◽  
...  
Keyword(s):  
Body Mass Index ◽  
Chronic Kidney Disease ◽  
Renal Function ◽  
Kidney Disease ◽  
Body Mass ◽  
Lower Risk ◽  
Tuberculosis Infection ◽  
University Hospital ◽  
Ckd Stage ◽  
Time Varying Covariates

Background: Patients with chronic kidney disease (CKD) receiving maintenance renal replacement therapy are at higher risk of tuberculosis (TB) infection. The risk of TB infection in CKD patients not receiving dialysis is unknown.Aim: We conduct this study to test the hypothesis that TB infection is negatively correlated to renal function.Design: Non-dialysis CKD stage 1–5 patients, admitted in China Medical University Hospital from January of 2003 to May of 2014, were enrolled in this study and were prospectively followed up to the diagnosis of TB, death, loss to follow-up, or December 2014. The risk factors of TB infection were analyzed using competing-risks regression analysis with time-varying covariates. The initiation of dialysis and patients' death were considered as competing events. Patients' estimated glomerular filtration rate (eGFR) and body mass index (BMI) were recorded at enrollment.Results: They were followed-up for a median duration of 1.4 years. Of the 7221 patients, TB infection was identified in 114 patients. Higher eGFR was associated with lower risk of TB infection (P &lt; 0.01). The adjusted subdistribution hazard ratio (aSHR) was 0.82 [95% confidence interval (CI), 0.72 to 0.94] for every 5 ml/min/1.73 m2 increase in eGFR. In addition, higher BMI (p = 0.01) was associated with a lower risk of TB infection and the aSHR was 0.91 (95% CI, 0.85 to 0.98) for every 1 kg/m2 increase in BMI.Conclusion: Renal function and body mass index are independently associated with the risk of tuberculosis infection in patients with chronic kidney disease not receiving dialysis.

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