Article ; Online: Soluble Klotho, a Potential Biomarker of Chronic Kidney Disease-Mineral Bone Disorders Involved in Healthy Ageing: Lights and Shadows.
International journal of molecular sciences
2024 Volume 25, Issue 3
Abstract: Shortly after the discovery of Klotho, interest grew in its potential role in chronic kidney disease (CKD). There are three isoforms of the Klotho protein: αKlotho, βKlotho and γKlotho. This review will focus on αKlotho due to its relevance as a ... ...
| Abstract | Shortly after the discovery of Klotho, interest grew in its potential role in chronic kidney disease (CKD). There are three isoforms of the Klotho protein: αKlotho, βKlotho and γKlotho. This review will focus on αKlotho due to its relevance as a biomarker in CKD. αKlotho is synthesized mainly in the kidneys, but it can be released into the bloodstream and urine as soluble Klotho (sKlotho), which undertakes systemic actions, independently or in combination with FGF23. It is usually accepted that sKlotho levels are reduced early in CKD and that lower levels of sKlotho might be associated with the main chronic kidney disease-mineral bone disorders (CKD-MBDs): cardiovascular and bone disease. However, as results are inconsistent, the applicability of sKlotho as a CKD-MBD biomarker is still a matter of controversy. Much of the inconsistency can be explained due to low sample numbers, the low quality of clinical studies, the lack of standardized assays to assess sKlotho and a lack of consensus on sample processing, especially in urine. In recent decades, because of our longer life expectancies, the prevalence of accelerated-ageing diseases, such as CKD, has increased. Exercise, social interaction and caloric restriction are considered key factors for healthy ageing. While exercise and social interaction seem to be related to higher serum sKlotho levels, it is not clear whether serum sKlotho might be influenced by caloric restriction. This review focuses on the possible role of sKlotho as a biomarker in CKD-MBD, highlighting the difference between solid knowledge and areas requiring further research, including the role of sKlotho in healthy ageing. |
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| MeSH term(s) | Humans ; Biomarkers ; Chronic Kidney Disease-Mineral and Bone Disorder/diagnosis ; Fibroblast Growth Factors ; Glucuronidase ; Healthy Aging/metabolism ; Minerals ; Renal Insufficiency, Chronic/complications ; Klotho Proteins/blood ; Klotho Proteins/metabolism |
| Chemical Substances | Biomarkers ; Fibroblast Growth Factors (62031-54-3) ; Glucuronidase (EC 3.2.1.31) ; Minerals ; Klotho Proteins (EC 3.2.1.31) |
| Language | English |
| Publishing date | 2024-02-03 |
| Publishing country | Switzerland |
| Document type | Journal Article ; Review |
| ZDB-ID | 2019364-6 |
| ISSN | 1422-0067 ; 1422-0067 ; 1661-6596 |
| ISSN (online) | 1422-0067 |
| ISSN | 1422-0067 ; 1661-6596 |
| DOI | 10.3390/ijms25031843 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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