Vitamin D mediates crosstalk between COVID-19 and osteoporosis

The worldwide outbreak of the extremely infectious extreme acute respiratory syndrome coronavirus 2 (SARS–COV-2) resulted within the pandemic of the coronavirus illness 2019 (COVID-19), which has claimed over 6.4 million lives worldwide thus far.

A number of kinds of COVID-19 vaccines have been developed, lots of which have obtained approval from international regulatory our bodies. Nevertheless, genomic mutations have led to the emergence of recent SARS-CoV-2 variants, which have diminished the effectiveness of those vaccines.

Vitamin D mediates crosstalk between COVID-19 and osteoporosis

Research: COVID-19 and Osteoporosis: Shared Mechanisms and Crosstalk through Vitamin D. Picture Credit score: Jarun Ontakrai /


Regardless of the event of quite a few vaccines able to stopping extreme illness, there stays a scarcity of particular and efficient remedies towards COVID-19. Thus, healthcare suppliers have primarily supplied symptomatic remedy to those sufferers.

Low plasma 25(OH)-vitamin D (VitD) ranges are thought of an unbiased danger issue for COVID-19 incidence. Hypovitaminosis D, outlined as a VitD deficiency, has additionally been detected in severely contaminated COVID-19 sufferers. To a sure extent, the presence of each COVID-19 and hypovitaminosis D has been a predictor of hospitalization and mortality.

A discount in inflammatory markers has been noticed in COVID-19 sufferers handled with Vit D. Moreover, the immunomodulatory actions of VitD might help stop cardiovascular issues, a number of organ failure, and different issues related to the cytokine storm in COVID-19 sufferers.

Not too long ago, osteoporosis sufferers have been discovered to be extra prone to SARS-COV-2 an infection. Some COVID-19 sufferers who’ve recovered from the sickness reported worsened osteoporosis circumstances. In consequence, these sufferers have been generally handled with Vit D dietary supplements.

Osteoporosis is a situation that happens resulting from Vit D deficiency. Thus far, restricted research have described how Vit D deficiency is linked with osteoporosis and COVID-19 manifestation.

A current examine below evaluation within the journal Scientific Reviews and presently obtainable on the Analysis Sq.* preprint server utilized bioinformatics, community pharmacology, and molecular docking approaches to determine and characterize the targets of Vit D on COVID-19 and osteoporosis.

Concerning the examine

A complete of two,660 COVID-19 targets, 5,093 osteoporosis targets, and 243 vitamin D targets have been recognized utilizing bioinformatics, and community pharmacology approaches. A Venn diagram predicted that 855 targets have been shared between COVID-19 and osteoporosis, thus indicating that these two circumstances might need a shared mechanism of pathogenesis.

A complete of 42 targets have been discovered to be shared between COVID-19, osteoporosis, and VitD. This discovering signifies that VitD could intermediate crosstalk between COVID-19 and osteoporosis.

A drug-target-disease (DTD) community of Vit D-COVID-19-Osteoporosis was subsequently constructed based mostly on protein-protein interplay (PPI) knowledge obtained by community pharmacology. This community recognized eight targets among the many 42 as potential core targets for Vit D within the regulation of each COVID-19 and osteoporosis. 

These eight core targets have been subjected to gene ontology (GO) enrichment evaluation, KEGG pathway enrichment evaluation, Wiki Pathways, and Reactome pathway enrichment evaluation. As well as, the organic course of (BP) regulatory function of VitD, via mobile responses to reactive oxygen species (ROS) and estrogen stimulation, was elucidated via GO evaluation.

Research findings

Screening of signaling pathway databases revealed ErbB and mitogen-activated protein kinase (MAPK) signaling pathways have been co-expressed in KEGG and Wiki Pathways. These databases additional confirmed activation of the activator protein-1 (AP-1) transcription issue household within the KEGG endocrine resistance pathway within the immune system of Rectome. These shared pathways additionally exhibited widespread targets, similar to endothelial progress issue receptor (EGFR), ErbB2, and MAPK8.

EGFR and MAPK8 targets have been each discovered to be concerned with G-protein-coupled receptor (GPCR) signaling, cytokine signaling within the immune system, and vesicle-mediated transport. These findings point out that Vit D exerts its regulatory features via the activation of MAPK, whereas ErbB signaling pathways ameliorate pulmonary fibrosis and management cytokine storm in COVID-19 sufferers.

Vit D additionally seems to induce osteoimmune mechanisms and management the structural integrity of bones. The mechanism related to the binding between Vit D and each EGFR and MAPK8 proteins was additionally validated via molecular docking simulations.

The current examine signifies that Vit D may inhibit the immune response of SARS-CoV-2 contaminated sufferers to inhibit the pathological processes concerned with the incidence of fibrosis and pulmonary irritation.

In SARS-CoV-2 contaminated sufferers, pulmonary fibrosis happens via the EGFR-mediated ERBB signaling pathway that’s chargeable for the manufacturing of extra pro-fibrotic than anti-fibrotic results. Conversely, VitD binds to the MAPK signaling pathway to facilitate osteoimmunity and contribute to muscle progress and regeneration.


The core targets related to the Vit D-COVID-19-osteoporosis community embrace estrogen receptor 1 (ESR1), EGFR, microtubule-associated protein tau (MAPT), MAPK8, ERBB2, AR, mouse double minute 2 (MDM2), and enhancer of zeste homolog 2 (EZH2).

Vit D certain tightly and interacted with MAPK8 and EGFR. Vit D targets related to the ErbB and MAPK signaling pathways have an essential function within the regulation of bone structural integrity, immune responses, and lung fibrosis.

Taken collectively, the present examine supplied novel mechanistic insights into the practical roles of Vit D in each COVID-19 and osteoporosis. Thus, Vit D ranges can be utilized to point a doubtlessly poor prognosis of COVID-19 and osteoporosis. Supplementation of Vit D could possibly be useful for the prevention and remedy of those ailments.

*Vital discover

Analysis Sq. publishes preliminary scientific stories that aren’t peer-reviewed and, subsequently, shouldn’t be considered conclusive, information medical follow/health-related conduct, or handled as established data.

Journal reference:

  • Liu, F., Music, C., Cai, W., et al. (2022) COVID-19 and Osteoporosis: Shared Mechanisms and Crosstalk through Vitamin D. Analysis Sq.. doi:10.21203/

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