kidney_upper_slim part of part of renal cortical epithelial cell epithelial cell of nephron kidney corpuscule cell Any renal cortical epithelial cell that is part of some renal corpuscle. The kidney corpuscle cell, also known as a renal corpuscle cell, is a crucial component of the renal corpuscle, a structure within the kidney responsible for initiating the blood filtration process to produce urine. Comprising the glomerulus and Bowman's capsule, the renal corpuscle relies on these cells to play a central role in the kidney's filtration system. During blood filtration, kidney corpuscle cells create an interface between blood and filtrate, allowing the removal of waste while retaining essential components in the bloodstream. The cells perform this through a combination of physical and specialized properties that are critical to an accurate filtering process. Some of these cells, such as endothelial cells in the glomerulus, are characterized by their fenestrations that help facilitate the filtration of plasma from the blood. These cells are specialized to permit the passage of fluid, while blocking the passage of blood cells and large proteins. Another type of corpuscle cell, the podocyte in Bowman's capsule, contributes with tentacle-like protrusions and slit diaphragms for further plasma filtration. Moreover, kidney corpuscle cells are implicated in disease states. Damage or pathology affecting these cells can reduce the kidney's filtering capacity, leading to kidney disease. For example, podocyte damage may cause protein leakage into urine (proteinuria), an early sign of kidney issues. Beyond routine filtration, renal corpuscle cells are vital for overall kidney health, serving as a crucial indicator for potential kidney-related problems. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) KUPO:0001021 https://cellxgene.cziscience.com/cellguide/CL_1000612 renal corpuscle