View clinical trials related to Kidney Injury.
Filter by:The involvement of the kidneys in patients infected with the SARS-CoV-2 virus at the outset of the pandemic was associated with high mortality rates worldwide. This was in part due to the generation of an inflammatory process and exacerbated oxidative stress. The present study was initiated to investigate the relationship between morphofunctional changes and gene expression in the kidney tissue of deceased Mexican patients prior to the initiation of vaccination. The investigator designed a single-center, prospective, cohort study, to analyze and relate the morphofunctional changes and gene expression of inflammatory and oxidative stress molecules in the kidney tissue of men who died from severe COVID-19. A total of 40 percutaneous renal biopsies from deceased patients with SARS-CoV-2 infection were included in the study and divided into two a groups. One group was preserved in trizol to obtain RNA and total protein, while the remaining sample was fixed in formalin to be examined by staining with hematoxylin and eosin. The histopathological analysis was conducted by an experienced nephropathologist. The expression of molecules was evaluated by real-time PCR (nphs2, slc9a1, cx3cl1, havcr1, slc22a17, sod2, egf, timp2, hmox1, fabp1, and so forth). The following biomarkers were analyzed: IL-6, Arg-1, DPP4, GSTT1, GGT1, OCL, CYP3A4, and CL-8. Additionally, Western blot analysis was conducted on claudins-5, occludin, HSP70, NRF-2, SOD2, NQO1, γ-GCL, and RAGE. The estimated glomerular filtration rate (eGFR) was calculated using the CKD-EPI (2021) equation, with the subjects divided into two groups based on their eGFR: >60 or <60 ml/min/1.73 m². The statistical analysis was conducted using the Stata program and GraphPad Prism software.
The study is an investigator-led, prospective, longitudinal, observational cohort study. The central hypothesis for this study is that spatial data will reveal new insights to immune cell function and local interactions within the kidney tissue to better predict important clinical outcomes. Investigators aspire to establish a prospective, longitudinal cohort to improve the diagnosis and management of kidney transplant rejection using precision pathology. By utilising new spatial technologies, the investigators aim to: - Derive a spatially resolved transcriptomic signature of kidney transplant rejection subtypes - Derive accurate transcriptomic signatures aligned with key cell types within the transplant kidney - Develop refinements to histological kidney rejection diagnostic and scoring classification - Correlate of spatial and refined biopsy scoring features to clinically important outcomes
The investigators aim to develop a clinically validated, histological acute tubular injury (ATI) scoring system to help improve diagnostic precision and predict clinical outcomes following ATI. To use an unbiased, data-driven approach, correlating pathological features (including digital pathology), key signatures using spatial technologies (transcriptomics or proteinomics) with relevant clinical outcomes. Spatial technologies (including spatial transcriptomics and spatial proteinomics) allow the use of 'precision pathology' to study the critical link between molecular characteristics to histological structure.
The aim of this study is to identify the incidence and the factors associated with acute kidney injury in adult poly trauma patients
Methodology Patients A total of 128 patients with sepsis and AKI who were admitted to several centers including Huzhou first people's Hospital combined with Wuxing People's Hospital, Linghu people's Hospital and Nanxun people's Hospital from November 1, 2021 to October 31, 2022 were included in the study. And all patients were diagnosed by clinical examination, Diagnostic criteria sepsis was diagnosed according to the international Sepsis-3 for patients with suspected infection using the quickly Sepsis related organ failure assessment (qSOFA). The qSOFA score consists of only three criteria: Glasgow Coma Scale (GCS) <15, systolic blood pressure ≤ 100 mmHg, and respiratory rate ≥22/min. A qSOFA score of 2 or more points indicates suspected sepsis. Criteria for AKI was defined according to the Kidney Disease Improving Global Outcomes (KDIGO), by the presence of one of the following: ①Increase in SCr by ≥ 0.3mg/dl (≥26.5 μ mol/L) within 48h；② Renal impairment is known or increase in SCr by ≥50% within 7days; ③ Oliguria for ≥4 hours. All patients were authorized by their families to sign informed consent, and the study was approved by the ethics committee of the hospital. Inclusion criteria: ①18-65 years old; ② The hospital survival time was more than 48 hours, and the medical records were complete; ③There is no history of vitamin B6 use in the recent period of admission (within 2 weeks before admission). Exclusion criteria: ①Patients with chronic renal insufficiency or renal failure in the past; ②Related renal injury caused by reasons other than sepsis; ③At the time of admission to ICU, there was cardiac failure or cardiogenic shock in combination with sepsis; ④Patients who use nephrotoxic drugs or contrast agents; ⑤Previous kidney transplantation; ⑥Patients with restrictive use of positive inotropic drugs (such as left ventricular outflow tract stenosis); ⑦Age<18 or>65; ⑧pregnant woman. Treatment 128 patients were divided into experimental and control group by random number table method, 64 patients in each group. Both groups were given routine treatment of sepsis and corresponding treatment of primary disease. The Patients in experimental group were given vitamin B6 injection 300mg/d (100mg/2ml× 3) intravenous injection, the course of treatment is one week or until the patient dies. That in control group were injected with 0.9% sodium chloride solution 6 ml intravenously. Assessment The general clinical data of the two groups were recorded, including age, sex, acute physiology and chronic health status scoring system II (APACHE II), qSOFA, and the constituent ratio of primary disease before treatment. The inflammatory reaction indexes of the two groups were detected before and on the 7th day of treatment, including Interleukin 6 (IL-6), interleukin 8 (IL-8), tumor necrosis factor (TNF-α) and endothelin-1 (ET-1). After collecting 5ml of fasting elbow vein blood from two groups of patients, the serum was separated by centrifugation (centrifugation radius: 3cm, rotation speed: 2000r/min, time: 10min), and then detected by enzyme-linked immunosorbent assay (ELISA). ELISA kits for IL-6 (ab178013), IL-8 (ab214030), and TNF-a(ab181241) were purchased from abcam company. ELISA kit for ET-1 (K7429-100) was purchased from BioVision. All ELISA experiments were performed according to the kit instructions. The oxidative stress response indexs of the two groups were detected before and on the 7th day of treatment, including superoxide dismutase (SOD), glutathione (GSH), malondialdehyde (MDA). The xanthine oxidase method is used to detect SOD, the DTNB method is used to detect GSH, and the thiobarbituric acid method is used to detect MDA. The renal function indexs before and after treatment were detected before and on the 7th day of treatment, including the blood urea nitrogen (BUN) and serum creatinine (sCr) and renal resistance index (RRI). RRI was detected by ultrasound. And the clinical data, including the rate of renal replacement therapy, ICU length of stay, total hospitalization expenses, and 28-d mortality, were recorded. Statistical analysis All measurements were expressed as mean ± standard deviation (x ± s). And the counting datas were expressed in the form of percentage [n (%)]. The statistical SPSS 23.0 software were performed using the two samples t-test and adjusted chi-square test for the two groups. P-value,0.05 was considered to be statistically significant.
Part I (bioequivalence) will evaluate the bioequivalence of the Oversea Manufactured Sample (used in the MediBeacon Phase 3 Study 100-103; NCT05425719) and Domestic Manufactured Sample in Single Intravenous Dose of MB-102 (Relmapirazin) in healthy Chinese adults. Part II (efficacy) will evaluate the performance of the MediBeacon Transdermal GFR Measurement System and Domestic Manufactured Sample of MB-102 (Relmapirazin) for Evaluation of Kidney Function in Chinese participants.
The goal of this mechanistic clinical trial is to learn about the effects of medications called soluble guanylyl cyclase stimulators on vascular function and markers of kidney and brain injury in patients having heart surgery. The main questions it aims to answer are: 1. Does soluble guanylyl cyclase stimulation improve blood vessel function compared to placebo? 2. Does soluble guanylyl cyclase stimulation decrease markers of kidney injury and brain injury compared to placebo? Participants will be randomized to a soluble guanylyl cyclase stimulator called vericiguat or placebo, and researchers will compare vascular function and markers of brain and kidney injury to see if vericiguat improves vascular function and reduces markers of injury. This will provide important information to determine the underlying reasons that patients have some kidney and brain function problems after having heart surgery.
The objective of this study is to establish that the MB-102 transdermal fluorescence-measured Glomerular Filtration Rate (GFR) using the MediBeacon® Measurement System with the Transdermal Glomerular Filtration Rate (TGFR) reusable sensor with disposable adhesive ring is comparable to the plasma-measured MB-102 GFR in normal and compromised renal function participants with different skin color types.
Long-term graft failure rates continue to be unacceptably high despite the development of immunosuppressive drugs, underscoring the unmet need for robust prognostic biomarkers of allograft injury and failure. While rates of acute rejection (AR) continue to decrease, it remains the strongest predictor of long-term allograft survival, and so having a better understanding of factors predicting AR may contribute to more individualized patient care. Selecting optimum immunosuppressive dosage is another factor in personalizing kidney care. This project will study two areas of individualized kidney care: 1) assessing rejection by surveillance testing utilizing AlloSure, 2) developing an algorithm to select optimum immunosuppressive medication dosage.
Black ethnicity is a major risk factor for chronic kidney disease [CKD] in people with HIV infection, suggesting that genetic factors are an important determinant of kidney disease progression in this population. The Gen-Africa study was established in 2018 to allow the study of genetic and clinical risk factors for CKD in people with HIV in the UK. Just over 3000 people across 15 sites were enrolled between May 2018 and January 2020. Demographic and clinical information was collected, and biological samples (buffy coats, plasma and urine) obtained. Cross-sectional analyses have revealed that participants of West-African ancestry are at higher risk of CKD and end-stage kidney disease [ESKD], and that genetic variants in the apolipoprotein L1 (APOL1) gene and sickle cell trait (SCT) are predictors of CKD and ESKD. The pathogenesis of APOL1- and SCT-associated CKD is incompletely understood, and additional, longitudinal data will be collected to improve understanding of the contribution of demographic, traditional CKD (diabetes, hypertension, obesity/metabolic syndrome, cardiovascular disease) and HIV (immuno-virological and hepatitis B/C co-infection status, antiretroviral medications) risk factors as well as additional genetic and epigenetic markers.