An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
1 Nephrology, Dialysis and Renal Transplantation, Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.
2 Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy.
3 Department of Internal Medicine n3, Ternopil State Medical University, 46002 Ternopil, Ukraine.
4 Renal Division, ASST Santi Paolo e Carlo, Department of Health Sciences, University of Milan, 20122 Milan, Italy.
5 Nephrology, Dialysis and Renal Transplantation, Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy. piergiorgio.messa@unimi.it.
6 Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy. piergiorgio.messa@unimi.it.
1 Nephrology, Dialysis and Renal Transplantation, Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.
2 Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy.
3 Department of Internal Medicine n3, Ternopil State Medical University, 46002 Ternopil, Ukraine.
4 Renal Division, ASST Santi Paolo e Carlo, Department of Health Sciences, University of Milan, 20122 Milan, Italy.
5 Nephrology, Dialysis and Renal Transplantation, Fondazione IRCCS Ca Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy. piergiorgio.messa@unimi.it.
6 Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy. piergiorgio.messa@unimi.it.
Native hypovitaminosis D (n-hVITD) is frequently found from the early stages of chronic kidney disease (CKD) and its prevalence increases with CKD progression. Even if the implications of n-hVITD in chronic kidney disease-mineral bone disorder (CKD-MBD) have been extensively characterized in the literature, there is a lot of debate nowadays about the so called "unconventional effects" of native vitamin D (25(OH)VitD) supplementation in CKD patients. In this review, highlights of the dimension of the problem of n-hVITD in CKD stages 2-5 ND patients will be presented. In addition, it will focus on the "unconventional effects" of 25(OH)VitD supplementation, the clinical impact of n-hVITD and the most significant interventional studies regarding 25(OH)VitD supplementation in CKD stages 2-5 ND.
Keywords:
CKD; cardiovascular risk; mineral metabolism; vitamin D; vitamin D supplementation.
No conflict of interest related to the present paper is declared.
Figures
Figure 1
Principal effects and their level…
Figure 1
Principal effects and their level of evidence of native hypovitaminosis D in chronic…
Figure 1
Principal effects and their level of evidence of native hypovitaminosis D in chronic kidney disease (CKD) patients. LOE: level of evidence. ** slight level of evidence; *** moderate level of evidence; ***** strong level of evidence;
González E.A., Sachdeva A., Oliver D.A., Martin K.J. Vitamin D insufficiency and deficiency in chronic kidney disease. A single center observational study. Am. J. Nephrol. 2004;24:503–510. doi: 10.1159/000081023.
-
DOI
-
PubMed
Cozzolino M., Ciceri P., Volpi E.M., Olivi L., Messa P.G. Pathophysiology of calcium and phosphate metabolism impairment in chronic kidney disease. Blood Purif. 2009;27:338–344. doi: 10.1159/000209246.
-
DOI
-
PubMed
Messa P., Regalia A., Alfieri C. Nutritional vitamin D in renal transplant patients: Speculations and reality. Nutrients. 2017;9:550. doi: 10.3390/nu9060550.
-
DOI
-
PMC
-
PubMed
Holick M.F., MacLaughlin J.A., Clark M.B., Holick S.A., Potts J.T., Anderson R.R., Elias P. Photosynthesis of previtamin D3 in human skin and the physiologic consequences. Science. 1980;210:203–205. doi: 10.1126/science.6251551.
-
DOI
-
PubMed
Nykjaer A., Dragun D., Walther D., Vorum H., Jacobsen C., Herz J., Willnow T.E. An endocytic pathway essential for renal uptake and activation of the steroid 25-(OH) vitamin D3. Cell. 1999;96:507–515. doi: 10.1016/S0092-8674(00)80655-8.
-
DOI
-
PubMed