Biomaterial Database

Healthy and unhealthy aging on kidney structure and function: human studies. 2022

Aleksandar Denic, and Andrew D Rule, and Richard J Glassock

Department of Medicine, Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.

This review is intended to provide an up-to-date analysis of the structural and functional alterations of the kidneys that accompany healthy and unhealthy aging in humans. Macro- and micro- structural changes and glomerular filtration rate (whole kidney and single nephron) accompanying aging will be stressed. Comparative findings concerning distribution of anatomic changes of the kidney healthy and unhealthy aging are reviewed. Challenges concerning definition of chronic kidney disease (CKD) in otherwise healthy aging patients are discussed. The complex interactions of CKD and aging are discussed. The role of podocyte dysbiosis in kidney aging is reviewed. Kidney aging is a complex phenomenon often difficult to distinguish from CKD. Nonetheless, phenotypes of healthy and unhealthy aging are evident. Much more information concerning the molecular characteristics of normal kidney aging and its relevance to chronic kidney disease is needed.

UI	MeSH Term	Description	Entries
D007668	Kidney	Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.	Kidneys
D008297	Male		Males
D005260	Female		Females
D005919	Glomerular Filtration Rate	The volume of water filtered out of plasma through glomerular capillary walls into Bowman's capsules per unit of time. It is considered to be equivalent to INULIN clearance.	Filtration Rate, Glomerular,Filtration Rates, Glomerular,Glomerular Filtration Rates,Rate, Glomerular Filtration,Rates, Glomerular Filtration
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000375	Aging	The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.	Senescence,Aging, Biological,Biological Aging
D050199	Podocytes	Highly differentiated epithelial cells of the visceral layer of BOWMAN CAPSULE of the KIDNEY. They are composed of a cell body with major CELL SURFACE EXTENSIONS and secondary fingerlike extensions called pedicels. They enwrap the KIDNEY GLOMERULUS capillaries with their cell surface extensions forming a filtration structure. The pedicels of neighboring podocytes interdigitate with each other leaving between them filtration slits that are bridged by an extracellular structure impermeable to large macromolecules called the slit diaphragm, and provide the last barrier to protein loss in the KIDNEY.	Visceral Epithelial Cells, Glomerular,Epithelial Cells, Glomerular Visceral,Glomerular Visceral Epithelial Cells,Podocyte
D051436	Renal Insufficiency, Chronic	Conditions in which the KIDNEYS perform below the normal level for more than three months. Chronic kidney insufficiency is classified by five stages according to the decline in GLOMERULAR FILTRATION RATE and the degree of kidney damage (as measured by the level of PROTEINURIA). The most severe form is the end-stage renal disease (CHRONIC KIDNEY FAILURE). (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002)	Kidney Insufficiency, Chronic,Chronic Kidney Diseases,Chronic Kidney Insufficiency,Chronic Renal Diseases,Chronic Renal Insufficiency,Chronic Kidney Disease,Chronic Kidney Insufficiencies,Chronic Renal Disease,Chronic Renal Insufficiencies,Disease, Chronic Kidney,Disease, Chronic Renal,Diseases, Chronic Kidney,Diseases, Chronic Renal,Kidney Disease, Chronic,Kidney Diseases, Chronic,Kidney Insufficiencies, Chronic,Renal Disease, Chronic,Renal Diseases, Chronic,Renal Insufficiencies, Chronic