1Borges MC, Martini LA, Rogero MM. Current perspectives onvitamin D,immune system,and chronic diseases[J]. Nutrition,2011,27(4):399-404.
2Janssens W, Bouillon R, Claes B, et al. Vitamin D deficiency ishighly prevalent in COPD and correlates with variants in thevitamin D-binding gene[J]. Thorax,2010,65(3) :215-220.
3Jones PW, Harding G, Berry P, et al. Development and firstvalidation of the COPD Assessment Test [ J]. Eur Respir J,2009,34(3) :648-654.
4Hansdottir S,Monick MM,Hinde SL.,et al. Respiratoryepithelial cells convert inactive vitamin D to itvs active foi^n:potential effects on host defense[J], J Immunol,2008.181(10):7090-7099.
5Sundar IK, Hwang JW,Wu S,et al. Deletion of vitamin Dreceptor leads to premature emphysema/COPD by increasedmatrix metalloproteinases and lymphoid aggregates formation[J]. Biochem Biophys Res Commun,2011,406( 1) : 127-133.
6Nuti R,Siviero P.Maggi S,et al. Vertebral fractures in patientswith chronic obstructive pulmonary disease: the EOLO Study[J]. Osteoporos Int,2009,20(6) :989-998.
7Hornikx M, van Remoortel H,Lehouck A,et al. Vitamin Dsupplementation during rehabilitation in COPD: a secondaryanalysis of a randomized trial[J]. Respir Res, 2012 ,25(13) : 84.
8Lehouck A,Mathieu C,Carremans C,et al. High doses ofvitamin D to reduce exacerbations in chronic obstructivepulmonary disease: a randomized trial [J]. Ann Intern Med,2012,156(2):105-114.
5Laqishetty V, Liu NQ, Hewison M. Vitamin D metabolism and innate immunity[J]. Mol Cell Endocrinol, 2011,347 (1/2) : 97- 105.
6Luong KV, Nquyen LT. Beneficial role of vitamin D3 in the prevention of certain respiratory diseases[J]. Ther Adv Respir Dis,2013,7(6) : 327-350.
7Shah AB, DiMartino SJ, Trujillo G, et al. Selective inhibition of the CSa chemotactic cofactor function ot the vitamin-d binding protein by 1,25(OH)2 vitamin-D3[J]. Mol Immunol,2006,43 (8):1109-1115.
8Amer M, Qayyum R. Relation between serum 25- hydroxyvitamin D and C-reactive protein in asymptomatic adults (from the continuous national health and nutrition examination survey 2001 to 2006)[J]. Am J Cardiol, 2012,109 (2) :226-230.
9Moro JR,Iwata M, von Andriano UH. Vitamin effects on the immune system: vitamins A and D take centre stage[J]. Nat Rev Immunol,2008,8(9) :685-698.
10Lange NE,Sparrow D, Vokonas P, et al. Vitamin D deficiency, smoking,and lung function in the Normative Aging Study[J]. Am J Respir Crit Care Med,2012,186(7) :616-621.
