Murine unilateral ureteral obstruction (UUO), a major model of progressive kidney disease, causes loss of proximal tubular mass and formation of atubular glomeruli. Adult C57BL/6 mice underwent a sham operation or reversible UUO under anesthesia. In group 1, kidneys were harvested after 7 days. In group 2, the obstruction was released after 7 days, and a physiological study of both kidneys was performed 30 days later. Renal blood flow (RBF), glomerular filtration rate (GFR), urine protein, and albumin excretion were measured after ligation of either the left or right ureter. Glomerular volume (periodic acid-Schiff), glomerulotubular integrity and proximal tubular mass (Lotus tetragonolobus lectin), and interstitial collagen (Sirius red) were measured by histomorphometry. Obstructed kidney weight was reduced by 15% at 7 days but was not different from sham after a 30-day recovery. Glomerular volume and proximal tubular area of the obstructed kidney were reduced by 55% at 7 days, but normalized after 30 days. Interstitial collagen deposition increased 2.4-fold after 7 days of UUO and normalized after release. However, GFR and RBF were reduced by 40% and urine albumin/protein ratio was increased 2.8-fold 30 days after release of UUO. This was associated with a 50% reduction in glomerulotubular integrity despite a 30-day recovery (P < 0.05 for all data). We conclude that release of 7-day UUO can arrest progression but does not restore normal function of the postobstructed kidney. Although the remaining intact nephrons have hypertrophied, glomerular injury is revealed by albuminuria. These results suggest that glomerulotubular injury should become the primary target of slowing progressive kidney disease.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1152/ajprenal.00425.2012 | DOI Listing |
J Ethnopharmacol
January 2025
Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Guangzhou University of Chinese Medicine, Shenzhen, Guangdong, 518033, China. Electronic address:
Ethnopharmacological Relevance: The Huangqi-Danshen decoction (HDD) is composed of Huangqi (Astragali Radix) and Danshen (Salviae Miltiorrhizae Radix et Rhizoma) and has been shown to alleviate renal fibrosis. However, the potential therapeutic mechanisms and effective components of HDD remain unclear.
Aim Of The Study: Both lipid metabolism and cGAS/STING signaling play vital roles in the development and progression of renal fibrosis.
CEN Case Rep
January 2025
Nephrology Center and Okinaka Memorial Institute for Medical Research, Toranomon Hospital, 2-2-2, Toranomon, Minato, Tokyo, Japan.
A 54-year-old man who had been on the kidney donor register for 32 years received a kidney from a 9-year-old boy who had died of fulminant myocarditis. The post-operative course was poor, and hemodialysis was still needed after surgery. A kidney biopsy one hour after surgery showed a neutrophil-predominant inflammatory cell infiltrate localized to the peritubular capillaries (PTC) and acute tubular necrosis of the proximal tubule.
View Article and Find Full Text PDFBiochem Biophys Rep
March 2025
Department of Nephrology, Pu'er People's Hospital, Pu'er, Yunnan, China.
Background: Chronic kidney disease (CKD) has become a worldwide health problem and the incidence rate and mortality of CKD have been rising. Renal fibrosis (RF) is the final common pathological feature of almost all kinds of CKD and Epithelial-mesenchymal transition (EMT) is the predominant stage of RF. β-catenin is a key component of the Wnt signaling pathway, which has been fully proven to promote EMT.
View Article and Find Full Text PDFTransl Res
January 2025
University of Colorado School of Public Health, Aurora, CO, Department of Biostatistics and Bioinformatics.
The organ-level molecular response to cardiac surgery with cardiopulmonary bypass (CPB) remains inadequately understood and may be heterogeneous. Here, we measured organ-specific gene expression in a piglet model of CPB with deep hypothermic circulatory arrest (DHCA). Infant piglets underwent peripheral CPB with 75min of DHCA and 6h of critical care after separation from CPB.
View Article and Find Full Text PDFJ Orthop Surg Res
January 2025
Department of Oral and Maxillofacial Radiology, School of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
This study evaluated the efficacy of tubular constructs containing stem cells and Type I collagen, both independently and in conjunction with low-level laser therapy (LLLT), in repairing the sciatic nerve in a rat model. In this animal study, the right sciatic nerve of 30 male Wistar rats, each weighing 250-300 g, was surgically excised to a length of 8 mm. The rats were then randomly allocated to three groups (n = 10 per group).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!