2021
DOI: 10.1007/s12020-020-02597-7
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Patients hospitalized with COVID-19 have low levels of 25-hydroxyvitamin D

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Cited by 25 publications
(19 citation statements)
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“…One of the vitamins that has attracted the most attention in relation to COVID-19 is vitamin D. The importance of a sufficient concentration of this vitamin in relation to COVID-19 is due to its potential immunomodulatory effects such as maintenance of epithelial cell integrity, promotion of antimicrobial peptides, modulation of antigenic presentation by dendritic cells, promotion of anti-inflammatory cytokines, and regulation of renin production [ 9 ]. However, a high prevalence of deficient 25(OH)D concentrations in patients hospitalized for COVID-19 has been reported [ 25 , 26 ]. Likewise, vitamin D deficiency has been associated with COVID-19 incidence, hospitalization, and mortality worldwide [ 7 , 8 ].…”
Section: Discussionmentioning
confidence: 99%
“…One of the vitamins that has attracted the most attention in relation to COVID-19 is vitamin D. The importance of a sufficient concentration of this vitamin in relation to COVID-19 is due to its potential immunomodulatory effects such as maintenance of epithelial cell integrity, promotion of antimicrobial peptides, modulation of antigenic presentation by dendritic cells, promotion of anti-inflammatory cytokines, and regulation of renin production [ 9 ]. However, a high prevalence of deficient 25(OH)D concentrations in patients hospitalized for COVID-19 has been reported [ 25 , 26 ]. Likewise, vitamin D deficiency has been associated with COVID-19 incidence, hospitalization, and mortality worldwide [ 7 , 8 ].…”
Section: Discussionmentioning
confidence: 99%
“…Since our letter of March 2020 in which we hypothesized that widespread hypovitaminosis D could have been responsible for the huge lethality of COVID-19 in Italy [8], several reports corroborated our assumption. In fact, patients with hypovitaminosis D at time of evaluation were shown to be at increased risk of testing positive for COVID-19 vs patients with sufficient status [41,42]. Moreover, low 25OHVD levels on hospital admission have been shown also to be associated with COVID-19 disease stage and mortality [43,44].…”
Section: Hypovitaminosis D and Covid-19mentioning
confidence: 99%
“…Additional support for the ACE2 deficiency model may lie in a more detailed examination of high-risk patient populations. Numerous groups have been identified as at high risk for poor COVID-19 outcomes: male gender, older age, obesity, and pre-existing co-morbidities with heart disease, hypertension, diabetes, and possibly vitamin D deficiency [ 93 , 124 127 ]. These high-risk groups for COVID-19 share at least one common factor: elevated baseline ACE pathway tone, which may arise from the increased prevalence of chronic inflammation in many of these groups [ 87 , 128 132 ].…”
Section: Evidence For Ace2 Downregulation Modelmentioning
confidence: 99%