Are There Any Pleiotropic Benefits of Vitamin D in Patients With Diabetic Kidney Disease? A Systematic Review of Randomized Controlled Trials

被引:1
|
作者
Sharma, Jaya K. [1 ]
Khan, Sono [1 ]
Wilson, Tristin [1 ]
Pilkey, Nathan [1 ]
Kapuria, Sanjana [1 ]
Roy, Angelique [2 ]
Adams, Michael A. [1 ]
Holden, Rachel M. [1 ,3 ]
机构
[1] Queens Univ, Dept Biomed & Mol Sci, 3048C Etherington Hall, Kingston, ON K7L 3V6, Canada
[2] Queens Univ, Bracken Hlth Sci Lib, Kingston, ON, Canada
[3] Queens Univ, Dept Med, Kingston, ON, Canada
关键词
25-hydroxyvitamin D; diabetic kidney disease; diabetes; D-RECEPTOR ACTIVATION; D DEFICIENCY; D SUPPLEMENTATION; URINARY ANGIOTENSINOGEN; NEPHROPATHY PATIENTS; GLUCOSE-METABOLISM; BLOOD-PRESSURE; ALBUMINURIA; PARICALCITOL; INFLAMMATION;
D O I
10.1177/20543581231212039
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
Background:Type 2 diabetes (T2D) and kidney disease are risk factors for vitamin D deficiency. Native forms of vitamin D have a lower risk of hypercalcemia than calcitriol, the active hormone. The enzyme responsible for activating native vitamin D is now known to be expressed throughout the body; therefore, native vitamin D may have clinically relevant effects in many body systems.Objective:The objective of this systematic review was to examine the effect of native vitamin D supplementation on clinical outcomes and surrogate laboratory measures in patients with T2D and diabetic kidney disease (DKD).Design:Systematic review.Setting:Randomized controlled trials (RCTs) conducted in any country.Patients:Adults with T2D and DKD receiving supplementation with any form of native vitamin D (eg, ergocalciferol, cholecalciferol, calcifediol).Measurements:Clinical outcomes and surrogate clinical and laboratory measures reported in each of the trials were included in this review.Methods:The following databases were searched from inception to January 31, 2023: Embase, MEDLINE, Cochrane CENTRAL, Web of Science, ProQuest Dissertations and Theses, and medRxiv. Only RCTs examining supplementation with a native vitamin D form with a control or placebo comparison group were included. We excluded studies reporting only vitamin D status or mineral metabolism parameters, without any other outcomes of clinical relevance or surrogate laboratory measures. Study quality was evaluated using the Cochrane risk-of-bias tool (RoB2). Results were synthesized in summary tables for each type of outcome with the P values from the original studies displayed.Results:Nine publications were included, corresponding to 5 separate RCTs (377 participants total). Mean age ranged from 40 to 63. All trials administered vitamin D3. Intervention groups experienced improvements in vitamin D status and a reduction in proteinuria in 4 of the 5 included RCTs. There was a decrease in low-density lipoprotein and total cholesterol in the 2 trials in which they were measured. Improvements in bone mass, flow-mediated dilation, and inflammation were also reported, but each was only measured in 1 RCT. Effects on glucose metabolism, high-density lipoprotein, triglycerides, blood pressure, oxidative stress, and kidney function were mixed. No serious adverse effects were reported.Limitations:Limitations include the small number of RCTs and lack of information on the use of drugs that affect measured outcomes (eg, proteinuria-lowering renin-angiotensin-aldosterone system inhibitors and lipid-lowering medication) in most studies. Our study is also limited by the absence of a prestudy protocol and registration.Conclusions:Native vitamin D is a safe treatment that improves vitamin D status in patients with DKD. Vitamin D may modify proteinuria and lipid metabolism in DKD, but further well-designed trials that include well-established treatments are necessary. Overall, there is limited evidence for beneficial pleiotropic effects of vitamin D in patients with DKD. Contexte:Le diabete de type 2 (DT2) et l'insuffisance renale sont des facteurs de risque pour une carence en vitamine D. Les formes natives de la vitamine D representent un risque plus faible d'hypercalcemie que le calcitriol, la forme active sur le plan hormonal de la vitamine D. On sait maintenant que l'enzyme responsable de l'activation de la vitamine D peut etre exprimee dans tout le corps et donc, que la vitamine D native peut avoir des effets cliniquement significatifs dans de nombreux systemes de l'organisme.Objectif:Examiner l'effet d'une supplementation en vitamine D native sur les resultats cliniques et les mesures de laboratoire de substitution de patients atteints de DT2 et de maladie renale diabetique (MRD).Conception:Revue systematiqueSources:Les essais controles randomises (ECR) pertinents, sans egard au pays ou ils ont ete menes.Sujets:Des adultes atteints de DT2 et de MRD recevant une supplementation de toute forme de vitamine D native (ergocalciferol, cholecalciferol, calcifediol).Mesures:Les mesures biologiques et cliniques de substitution ainsi que les resultats cliniques rapportes dans chacun des essais inclus.Methodologie:Une recherche des articles pertinents a ete effectuee dans les bases de donnees Embase, MEDLINE, Cochrane CENTRAL, Web of Science, ProQuest Dissertations and Theses et medRxiv depuis leur creation jusqu'au 31 janvier 2023. Seuls les ECR examinant la supplementation avec une forme native de vitamine D contre un groupe temoin ou un placebo ont ete inclus. Nous avons exclu les etudes ne rapportant que le statut en vitamine D ou les parametres du metabolisme mineral, sans aucun autre resultat significatif sur le plan clinique ou mesure de laboratoire de substitution. La qualite des etudes a ete evaluee a l'aide de l'outil Cochrane sur le risque de biais (RoB2). Les resultats ont ete resumes dans des tableaux recapitulatifs pour chaque type de resultat avec les valeurs de p tirees des essais originaux.Resultats:Neuf publications ont ete incluses, lesquelles portaient sur cinq ECR distincts (377 participants au total). L'age moyen des sujets variait de 40 a 63 ans. De la vitamine D3 avait ete administree dans tous les essais. Dans quatre des cinq ECR inclus, le groupe d'intervention avait connu une amelioration du statut en vitamine D et une reduction de la proteinurie. Une diminution des LDL et du cholesterol total avait ete observee dans les deux essais ou ces parametres avaient ete mesures. Des ameliorations de la masse osseuse, de la dilatation mediee par le debit et de l'inflammation avaient egalement ete rapportees, mais chacun de ces parametres n'avait ete mesure que dans un seul ECR. Lorsque rapportes, les effets sur le metabolisme du glucose, les HDL, les triglycerides, la pression arterielle, le stress oxydatif et la fonction renale etaient mitiges. Aucun effet indesirable grave a la supplementation n'a ete signale.Limites:Les resultats sont limites par le faible nombre d'ECR inclus et par le manque d'information dans la plupart des etudes sur l'utilisation de medicaments qui affectent les resultats mesures (par exemple, les inhibiteurs du SRAA abaissant la proteinurie et les medicaments abaissant le taux de lipides). Aussi, notre etude n'est pas enregistree et ne comportait pas de protocole pre-etude.Conclusion:La supplementation en vitamine D native est sure et elle ameliore le statut en vitamine D des patients atteints de MRD. La vitamine D semble modifier la proteinurie et le metabolisme lipidique en contexte de MRD, mais d'autres essais bien concus et integrant des traitements bien etablis sont necessaires. Globalement, il existe peu de donnees probantes sur les effets pleiotropiques benefiques de la vitamine D chez les patients atteints de MRD.
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