[Molecular mechanisms of renal aging]

Chronic kidney disease (CKD) is characterized by the progressive decline of renal function, that occurs once a critical number of nephrons has been lost, regardless the etiology. CKD prevalence is constantly increasing, especially with age. Nevertheless, the molecular mechanisms underlying this progression are not very well known. With an increasing number of patients with CKD, especially elderly patients, it urges to better understand the pathophysiology of this progression to elaborate new therapeutic strategies. Recent works have highlighted the role of some cellular processes, such as senescence, during age-related kidney dysfunction. Senescence corresponds to a cellular state associated with a cell cycle blockade. Although the cell cannot proliferate, she is able to secrete a lot of proteins grouped under the term of senescence associated secretory phenotype (SASP). Identification of molecular mechansims involved in age related kidney dysfunction could help to determine new therapeutic targets.