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Vitamin D levels reverberate in monocytes modulation in hemodialysis patients
Author(s) -
Almeida A. C. S. F.,
Siqueira M. C.,
Bonan N. B.,
Dambiski A.,
Bertuzzo G.,
MorenoAmaral A N.,
Barreto F. C.
Publication year - 2019
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.28290
Subject(s) - hemodialysis , vitamin , modulation (music) , vitamin d and neurology , monocyte , chemistry , medicine , immunology , endocrinology , biology , microbiology and biotechnology , physics , acoustics
Background Patients with chronic kidney disease (CKD) have a severe vitamin D deficiency and increasing epidemiological data suggesting that this deficiency may play a role in overall morbidity and mortality associated with CKD. It is known that vitamin D regulates the immune system, however, in dialysis patients this deficiency and the modulation of proinflammatory cells is unclear. Among these, monocytes arouse interest considering they constitutively express vitamin D receptors. Aim This study aimed the evaluation of monocytic profile in CKD patients according to vitamin D levels. Methods Patients in hemodialysis (HD) were divided into two groups, regarding vitamin D levels: Group 1, vitamin D <26 ng/ml ( n = 15) and Group 2, vitamin D ≥26 ng/ml ( n = 18). Whole blood was collected aiming evaluation of (a) monocytic populations through CD14 and CD16 expression, (b) reactive oxygen species (ROS) generation, and (c) apoptosis. Results We observed that in Group 1, when compared to Group 2, there was a significant increase in intermediate monocytes (CD14 ++ CD16 + ; 34.7 ± 31.6 vs. 12.1 ± 6.3; p = 0.006, respectively) and decrease in classical ones (CD14 ++ CD16 − ; 45.3 ± 31.8 vs. 70.4 ± 25.1; p = 0.017, respectively). There was no difference between groups regarding nonclassical monocytes (CD14 + CD16 ++ ), as well as to apoptosis and to ROS generation. Conclusion This study suggests that HD patients with lower vitamin D levels might have an intensified inflammatory outline as intermediate monocytes with an inflammatory pattern are increased in this population, when compared with patients with higher levels of vitamin D.