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 forms of COVID-19 vaccines have been developed, a lot of which have obtained approval from world regulatory our bodies. Nevertheless, genomic mutations have led to the emergence of latest SARS-CoV-2 variants, which have diminished the effectiveness of those vaccines.

Study: COVID-19 and Osteoporosis: Shared Mechanisms and Crosstalk via Vitamin D. Image Credit: Jarun Ontakrai /

Examine: COVID-19 and Osteoporosis: Shared Mechanisms and Crosstalk via 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 therapies towards COVID-19. Thus, healthcare suppliers have primarily offered symptomatic remedy to those sufferers.

Low plasma 25(OH)-vitamin D (VitD) ranges are thought of an impartial threat 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 may help forestall cardiovascular issues, a number of organ failure, and different issues related to the cytokine storm in COVID-19 sufferers.

Just lately, osteoporosis sufferers had been discovered to be extra vulnerable to SARS-COV-2 an infection. Some COVID-19 sufferers who’ve recovered from the sickness reported worsened osteoporosis situations. Because of this, these sufferers had been generally handled with Vit D dietary supplements.

Osteoporosis is a situation that happens as a consequence of Vit D deficiency. To this point, restricted research have described how Vit D deficiency is linked with osteoporosis and COVID-19 manifestation.

A current research underneath evaluation within the journal Scientific Experiences and at present accessible on the Research Square* preprint server utilized bioinformatics, community pharmacology, and molecular docking approaches to establish and characterize the targets of Vit D on COVID-19 and osteoporosis.

In regards to the research

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

A complete of 42 targets had 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) information obtained by community pharmacology. This community recognized eight targets among the many 42 as doable core targets for Vit D within the regulation of each COVID-19 and osteoporosis. 

These eight core targets had 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, by mobile responses to reactive oxygen species (ROS) and estrogen stimulation, was elucidated by GO evaluation.

Examine findings

Screening of signaling pathway databases revealed ErbB and mitogen-activated protein kinase (MAPK) signaling pathways had 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, resembling endothelial development issue receptor (EGFR), ErbB2, and MAPK8.

EGFR and MAPK8 targets had 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 by 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 by molecular docking simulations.

The current research signifies that Vit D would possibly 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 by the EGFR-mediated ERBB signaling pathway that’s answerable 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 development 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 research offered novel mechanistic insights into the useful roles of Vit D in each COVID-19 and osteoporosis. Thus, Vit D ranges can be utilized to point a probably 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 scientific apply/health-related habits, or handled as established info.

Journal reference:
  • Liu, F., Tune, 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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