[1] Holick M F, Chen T C. Vitamin D deficiency: a worldwide problem, with health consequences[J]. Am J Clin Nutr, 2008, 87:1080S-1086S.
[2] Chang S W, Lee H Ch. Vitamin D and health-The missing vitamin in humans[J]. Pediatr Neonatol, 2019, 60:237-244.
[3] Pawankar R, Canonica G W, Holgate S T L R. White book on allergy: executive summary. 2011-2012.
[4] Wei R, Christakos S. Mechanisms underlying the regulation of innate and adaptive immunity by vitamin D[J]. Nutrients, 2015, 7: 8251-8260.
[5] Ramos-Martínez E, López-Vancell M R, Fernández de Córdova-Aguirre, et al. Reduction of respiratory infections in asthma patients supplemented with vitamin D is related to increased serum IL-10 and IFN levels and cathelicidin expression[J]. Cytokine, 2018, 108:239-246.
[6] White J H. Vitamin D as an inducer of cathelicidin antimicrobial peptide expression: past, present and future[J]. J Steroid Biochem Mol Biol, 2010, 121:234-238.
[7] Wang T T, Nestel F P, Bourdeau V, et al. Cutting edge: 1, 25-dihydroxyvitamin D₃ is a direct inducer of antimicrobial peptide gene expression[J]. J Immunol, 2004, 173:2909-2912.
[8] Adams J S, Hewison M. Unexpected actions of vitamin D: new perspectives on the regulation of innate and adaptive immunity[J]. Nat Rev Endocrinol, 2008, 4:80-90.
[9] Jat K R. Vitamin D deficiency and lower respiratory tract infections in children: a systematic review and meta-analysis of observational studies[J]. Trop Doct, 2017, 47:77-84.
[10] Kempker J A, West K G, Kempker R R, et al. Vitamin D status and the risk for hospital-acquired infections in critically ill adults: a prospective cohort study[J]. PLoS One, 2015,10:e0122136.
[11] Telcian A G, Zdrenghea M T, Edwards M R, et al. Vitamin D increases the antiviral activity of bronchial epithelial cells in vitro[J]. Antivir Res, 2017, 137:93-101.
[12] Zdrenghea M T, Makrinioti H, Bagacean C, et al. Vitamin D modulation of innate immune responses to respiratory viral infections[J]. Rev Med Virol, 2017, 27(1):879-901.
[13] Gombart A, Borregaard N, Koeffler H. Human cathelicidin antimicrobial peptide (CAMP) gene is a direct target of the vitamin D receptor and is strongly up-regulated in myeloid cells by 1,25-dihydroxyvitamin D₃[J]. FASEB J, 2005, 19:1067-1077.
[14] Uday S, Högler W. Prevention of rickets and osteomalacia in the UK: political action overdue[J]. Arch Dis Child, 2018, 103: 901-906.
[15] Anderson P H. Vitamin D activity and metabolism in bone[J]. Curr Osteoporos Rep, 2017, 15: 443-449
[16] Bhattoa H P, Konstantynowicz J, Laszcz N, et al. Vitamin D: musculoskeletal health[J]. Rev Endocr Metab Disord, 2017, 18: 363-371.
[17] Wang W J, Yu X H, Wang C, et al. MMPs and ADAMTSs in intervertebral disc degeneration[J].Clin Chim Acta, 2015, 25(448): 238-46.
[18] Niroshima DW, Sunil P, Hemantha P, et al. Serum 25-hydroxyvitamin D, serum calcium and vitamin D receptor (VDR) polymorphisms in a selected population with lumbar disc herniation-A case control study[J]. PLoS One, 2018, 13(10): e0205841.
[19] Marco B B, Marco V, Sabina C, et al. Plasma vitamin D and osteo-cartilaginous markers in Italian males affected by intervertebral disc degeneration: focus on seasonal and pathological trend of type II collagen degradation[J]. Clin Chim Acta, 2017, 471:87-93.
[20] Farid Z, Alireza F, Bahram S, et al. A survey of vitamin D status in patients with degenerative diseases of the spine[J]. Asian Spine J, 2016, 10(5): 834-842.
[21] Zhang F F, Jeffrey B D, Grace H L, et al. Vitamin D deficiency is associated with progression of knee osteoarthritis[J]. J Nutr, 2014, 144:2002-2008.
[22] Gabby B J, Charles E M, Michael C N, et al. Associations between vitamin C and D intake and cartilage composition and knee joint morphology over 4 years: data from the osteoarthritis initiative[J]. Arthritis Care Res, 2019, 10:1002.
[23] E Kuyucu, H Çabuk, Y Güler, et al. Can intra-articular 1α, 25-Dihydroxyvitamin D₃ administration be therapeutical in joint cartilage damage?[J]. Acta Chir Orthop Traumatol Cech, 2020, 87(2): 90-94.
[24] Marta A S, Rosa I, Paola C, et al. Assessment of vitamin D supplementation on articular cartilage morphology in a young healthy sedentary rat model[J]. Nutrients, 2019, 11: 1260.
[25] Cecilia P G, Michael E A, Richard M, et al. Low levels of vitamin d have a deleterious effect on the articular cartilage in a rat model[J].Musculoskelet J Hosp Spec Surg, 2016, 12:150-157.
[26] Kift R, Rhodes L E, Farrar M D, et al. Is sunlight exposure enough to avoid wintertime vitamin D deficiency in United Kingdom population groups?[J]. Int J Environ Res Public Health,2018, 15(8):1624.
[27] Morton J P,Iqbal Z,Drust B,et al. Seasonal variation in vitamin D status in professional soccer players of the English Premier League[J]. Appl Physiol Nutr Metab,2012,37(4):798-802.
[28] Bhattoa H P, Konstantynowicz J, Laszcz N, et al. Vitamin D: Musculoskeletal health[J]. Rev Endocr Metab Disord, 2017, 18:363-371.