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Urea transporters (UTs) are membrane proteins in the urea transporter protein A (UT-A) and urea transporter protein B (UT-B) families. UT-B is mainly expressed in endothelial cell membrane of the renal medulla and in other tissues, including the brain, heart, pancreas, colon, bladder, bone marrow, and cochlea. UT-B is responsible for the maintenance of urea concentration, male reproductive function, blood pressure, bone metabolism, and brain astrocyte and cardiac functions. Its deficiency and dysfunction contribute to the pathogenesis of many diseases. Actually, UT-B deficiency increases the sensitivity of bladder epithelial cells to apoptosis triggers in mice and UT-B-null mice develop II-III atrioventricular block and depression. The expression of UT-B in the rumen of cow and sheep may participate in digestive function. However, there is no systemic review to discuss the UT-B functions. Here, we update research approaches to understanding the functions of UT-B.
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http://dx.doi.org/10.1007/s00424-019-02323-x | DOI Listing |
Exp Cell Res
September 2025
Department of Nephrology, The First Hospital of China Medical University, Shenyang 110004 Liaoning Province, China. Electronic address:
Renal fibrosis is the common pathological outcome of chronic kidney disease (CKD) progressing into end-stage renal disease. The excessive proliferation of fibroblasts plays an important role in the CKD progression. Nutrients such as amino acids and their transportation are essential for cell proliferation.
View Article and Find Full Text PDFJ Ethnopharmacol
September 2025
Lab of Food Function and Nutrigenomics, College of Food Science and Technology, Hunan Agricultural University, Changsha 410128, China; Institute of Integrative Medicine, Hunan Provincial Key Laboratory of Liver Visceral Manifestation in Traditional Chinese Medicine, Department of Integrated Traditio
Ethnopharmacological Relevance: Corus officinalis Siebold & Zucc belongs to the genus Cornus in the Cornaceae family, and was first recorded in the "Shennong Herbal Classic", now has been included in "according to the tradition of both food and Chinese herbal medicines", consist of kidney and liver tonifying, antioxidant substances including cycloid glycosides, flavonoids, polyphenols, organic acids, etc. AIM OF THE STUDY: This study was aimed at discovering the mechanism underlying the anti-hyperemia effect of Cor in rats, particularly its protective effect against liver and kidney dysfunction caused by HUA.
Materials And Methods: In this study, the effect of Cor extract against HUA was verified in rats, subsequently, network pharmacology combined with non-targeted metabolomic were performed to investigate its composition characteristics, and further multi-omics studies and molecular validation were performed to reveal molecular mechanism both in vivo and in vitro.
Chem Asian J
September 2025
State Key Laboratory of Bio-based Fiber Materials, Department of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P.R. China.
The electrochemical urea oxidation reaction (UOR) presents an energy-efficient alternative to the sluggish oxygen evolution reaction (OER), operating at a substantially lower thermodynamic potential and thereby reducing the energy input for hydrogen production by approximately 70%. Simultaneously, UOR facilitates wastewater remediation, offering dual environmental and energy benefits. In this work, we report a MnCO/Ni(OH) heterostructured nanoflower array directly grown on conductive carbon cloth that exhibits outstanding UOR catalytic activity and stability.
View Article and Find Full Text PDFStomatin is a ubiquitous and highly expressed protein in erythrocytes, which associates with cholesterol-rich microdomains in the plasma membrane and is known to regulate the activity of multiple ion channels and transporters, but the structural basis of association with stomatin targets remains unknown. Here we describe high-resolution structures of multiple stomatin complexes with endogenous binding partners isolated from human erythrocyte membranes, revealing that stomatin specifically associates with two membrane proteins involved in water transport and cell volume regulation, aquaporin-1 (AQP-1) and the urea transporter, UT-B (SLC14A1). Together, our results reveal the structural basis of stomatin oligomerization, membrane association, and target recruitment, and identify a putative role for stomatin in the regulation of osmotic balance in the erythrocyte.
View Article and Find Full Text PDFBiomed Res Int
September 2025
Department of Pharmacy, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Vancomycin is the first-line treatment for infection, and high plasma concentration can cause nephrotoxicity. The aim of the study was to determine the correlation between intracellular vancomycin concentration and HK-2 cytotoxicity and explore omeprazole's protective effect. The activity of HK-2 cells was detected, HPLC method was established and verified, and the vancomycin concentrations in the intracellular and extracellular fluids of HK-2 cells were determined.
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