2022
DOI: 10.3390/nu14214668
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Effect of Single Nucleotide Polymorphisms in the Vitamin D Metabolic Pathway on Susceptibility to Non-Small-Cell Lung Cancer

Abstract: The pathogenesis of non-small-cell lung cancer (NSCLC) is complex, since many risk factors have been identified. Recent research indicates that polymorphisms in the metabolic pathway of vitamin D may be involved in both risk and survival of the disease. The objective of this study is to assess the effect of 13 genetic polymorphisms involved in the vitamin D metabolic pathway on the risk of suffering from NSCLC. We conducted an observational case-control study, which included 204 patients with NSCLC and 408 con… Show more

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Cited by 5 publications
(7 citation statements)
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“…The 1,25(OH)2D, is a secosteroid hormone which acts as a ligand by selectively binding to the VDR receptor, a transcription factor which binds to DNA sites called vitamin D response elements (VDREs). There are thousands of VDREs regulating hundreds of genes specifically for each cell [ 10 , 11 , 12 , 13 , 14 ]. In this conceptual framework, vitamin D plays an important role in the inflammatory response and the development of the Th2 phenotype, typical of asthmatic disease.…”
Section: Introductionmentioning
confidence: 99%
“…The 1,25(OH)2D, is a secosteroid hormone which acts as a ligand by selectively binding to the VDR receptor, a transcription factor which binds to DNA sites called vitamin D response elements (VDREs). There are thousands of VDREs regulating hundreds of genes specifically for each cell [ 10 , 11 , 12 , 13 , 14 ]. In this conceptual framework, vitamin D plays an important role in the inflammatory response and the development of the Th2 phenotype, typical of asthmatic disease.…”
Section: Introductionmentioning
confidence: 99%
“…The term vitamin D encompasses several liposoluble molecules: ergocalciferol, cholecalciferol, calcidiol, and calcitriol. Cholecalciferol is synthesized in the dermis by the action of UVB radiation (290–320 nm) on 7-dehydrocholesterol, whereas ergocalciferol is supplied to the body through the diet [ 10 , 14 , 15 ]. Both vitamin D isoforms are transported in the blood bound to vitamin D binding protein (VDBP) [ 16 ].…”
Section: Introductionmentioning
confidence: 99%
“…To be activated, the isoforms need to undergo two hydroxylation reactions. The first occurs in the liver at position 25 through the action of the 25-hydroxylase or CYP2R1 enzyme, resulting in calcidiol or 25(OH)D. This is the metabolite that circulates for the longest in the blood and is therefore the one that is measured to determine serum vitamin D levels [ 14 ]. Then, a second hydroxylation takes place in the kidney through the action of the 1-alpha-hydroxylase or CYP27B1 enzyme, producing calcitriol or 1,25(OH)D. The latter is the active form of vitamin D, which binds to the vitamin D receptor (VDR) in the cell membrane [ 17 , 18 , 19 ].…”
Section: Introductionmentioning
confidence: 99%
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“…The first is synthesized in the dermis through the action of ultraviolet (UV) radiation, especially UVB (290–320 nm), on 7-dehydrocholesterol, while both the first and the second are incorporated through the diet [ 9 , 17 , 18 ]. Both molecules are transported in the blood bound to vitamin D binding protein (VDBP) or GC, which carries them to the liver, where the CYP2R1 or 25-hydroxylase enzyme carries out a hydroxylation at position 25 of the molecule, producing calcidiol or 25(OH)D. This is the metabolite that remains in the blood for longer and is, therefore, the one that is measured when determining serum levels [ 19 , 20 , 21 ]. It then travels to the kidney, where the CYP27B1 or α-1-hydroxylase enzyme includes a hydroxyl group at position 1, giving rise to calcitriol.…”
Section: Introductionmentioning
confidence: 99%