{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T19:59:27Z","timestamp":1790971167243,"version":"4.1.0"},"reference-count":133,"publisher":"SAGE Publications","issue":"5","license":[{"start":{"date-parts":[[2018,4,27]],"date-time":"2018-04-27T00:00:00Z","timestamp":1524787200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Cell Transplant"],"published-print":{"date-parts":[[2018,5]]},"abstract":"<jats:p>Acute kidney injury (AKI), characterized by a sharp drop in glomerular filtration, continues to be a significant health burden because it is associated with high initial mortality, morbidity, and substantial health-care costs. There is a strong connection between AKI and mechanisms of senescence activation. After ischemic or nephrotoxic insults, a wide range of pathophysiological events occur. Renal tubular cell injury is characterized by cell membrane damage, cytoskeleton disruption, and DNA degradation, leading to tubular cell death by necrosis and apoptosis. The senescence mechanism involves interstitial fibrosis, tubular atrophy, and capillary rarefaction, all of which impede the morphological and functional recovery of the kidneys, suggesting a strong link between AKI and the progression of chronic kidney disease. During abnormal kidney repair, tubular epithelial cells can assume a senescence-like phenotype. Cellular senescence can occur as a result of cell cycle arrest due to increased expression of cyclin kinase inhibitors (mainly p21), downregulation of Klotho expression, and telomere shortening. In AKI, cellular senescence is aggravated by other factors including oxidative stress and autophagy. Given this scenario, the main question is whether AKI can be repaired and how to avoid the senescence process. Stem cells might constitute a new therapeutic approach. Mesenchymal stem cells (MSCs) can ameliorate kidney injury through angiogenesis, immunomodulation, and fibrosis pathway blockade, as well as through antiapoptotic and promitotic processes. Young umbilical cord\u2013derived MSCs are better at increasing Klotho levels, and thus protecting tissues from senescence, than are adipose-derived MSCs. Umbilical cord\u2013derived MSCs improve glomerular filtration and tubular function to a greater degree than do those obtained from adult tissue. Although senescence-related proteins and microRNA are upregulated in AKI, they can be downregulated by treatment with umbilical cord\u2013derived MSCs. In summary, stem cells derived from young tissues, such as umbilical cord\u2013derived MSCs, could slow the post-AKI senescence process.<\/jats:p>","DOI":"10.1177\/0963689717743512","type":"journal-article","created":{"date-parts":[[2018,4,27]],"date-time":"2018-04-27T06:04:23Z","timestamp":1524809063000},"page":"739-753","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":90,"title":["Acute Kidney Injury as a Condition of Renal Senescence"],"prefix":"10.1177","volume":"27","author":[{"given":"Lucia","family":"Andrade","sequence":"first","affiliation":[{"name":"Laboratory of Basic Science LIM-12, Renal Division, University of S\u00e3o Paulo, School of Medicine, S\u00e3o Paulo, Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Camila E.","family":"Rodrigues","sequence":"additional","affiliation":[{"name":"Laboratory of Basic Science LIM-12, Renal Division, University of S\u00e3o Paulo, School of 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