[1] 杨平,吴德,车炼强,等.饲粮添加
L-精氨酸或N-氨甲酰谷氨酸对感染PRRSV妊娠母猪繁殖性能及免疫功能的影响[J].动物营养学报,2011,23(8):1351-1360.
[2] WU G Y,BAZER F W,DAVIS T A,et al.Important roles for the arginine family of amino acids in swine nutrition and production[J].Livestock Science,2007,112(1/2):8-22.
[3] KUDO Y,BOYD C A R,SARGENT I L,et al.Tryptophan degradation by human placental indoleamine 2,3-dioxygenase regulates lymphocyte proliferation[J].The Journal of Physiology,2001,535(1):207-215.

[4] BRARD J,BEE G.Effects of dietary
L-arginine supplementation to gilts during early gestation on foetal survival,growth and myofiber formation[J].Animal,2010,4(10):1680-1687.

[5] LI X L, BAZER F W,JOHNSON G A,et al.Dietary supplementation with 0.8%
L-arginine between days 0 and 25 of gestation reduces litter size in gilts[J].The Journal of Nutrition,2010,140(6):1111-1116.

[6] 刘德辉,黄毓茂,徐蕙.猪限制性氨基酸需要量研究进展[J].畜禽业,2009(5):20-21.
[7] LE FLOC'H N,OTTEN W,MERLOT E.Tryptophan metabolism,from nutrition to potential therapeutic applications[J].Amino Acids,2011,41(5):1195-205.

[8] MCGAHA T L,HUANG L,LEMOS H,et al.Amino acid catabolism:a pivotal regulator of innate and adaptive immunity[J].Immunological Reviews,2012,249(1):135-157.

[9] FALLARINO F,GROHMANN U,YOU S,et al.The combined effects of tryptophan starvation and tryptophan catabolites down-regulate T cell receptor ζ-chain and induce a regulatory phenotype in naive T cells[J].The Journal of Immunology,2006,176(11):6752-6761.

[10] PETROFF M G.Immune interactions at the maternal-fetal interface[J].Journal of Reproductive Immunology,2005,68(1/2):1-13.
[11] AUSTIN C J D,ASTELBAUER F,KOSIM-SATYAPUTRA P,et al.Mouse and human indoleamine 2,3-dioxygenase display some distinct biochemical and structural properties[J].Amino Acids,2009,36(1):99-106.

[12] HAUK V,AZZAM S,CALO G,et al.Vasoactive intestinal peptide induces an immunosuppressant microenvironment in the maternal-fetal interface of non-obese diabetic mice and improves early pregnancy outcome[J].American Journal of Reproductive Immunology,2014,71(2):120-130.

[13] 李大金.母-胎界面免疫耐受微环境的分子信息传导机制[J].医学研究杂志,2011,40(7):3-5.
[14] DVRR S,KINDLER V.Implication of indolamine 2,3 dioxygenase in the tolerance toward fetuses,tumors,and allografts[J].Journal of Leukocyte Biology,2013,93(5):681-687.

[15] HAO K H,ZHOU Q,CHEN W,et al.Possible role of the ‘IDO-AhR axis’ in maternal-foetal tolerance[J].Cell Biology International,2013,37(2):105-108.

[16] LOCKWOOD C J,HUANG S J,CHEN C P,et al.Decidual cell regulation of natural killer cell-recruiting chemokines:implications for the pathogenesis and prediction of preeclampsia[J].The American Journal of Pathology,2013,183(3):841-856.

[17] BAN Y L,CHANG Y C,DONG B H,et al.Indoleamine 2,3-dioxygenase levels at the normal and recurrent spontaneous abortion fetal-maternal interface[J].Journal of International Medical Research,2013,41(4):1135-1149.

[18] LIGAM P,MANUELPILLAI U,WALLACE E M,et al.Localisation of indoleamine 2,3-dioxygenase and kynurenine hydroxylase in the human placenta and decidua:implications for role of the kynurenine pathway in pregnancy[J].Placenta,2005,26(6):498-504.

[19] LEI Z M,YANG M,LI X,et al.Upregulation of placental indoleamine 2,3-dioxygenase by human chorionic gonadotropin[J].Biology of Reproduction,2007,76(4):639-644.

[20] WANG B,KOGA K,OSUGA Y,et al.Toll-like receptor-3 ligation-induced indoleamine 2,3-dioxygenase expression in human trophoblasts[J].Endocrinology,2011,152(12):4984-4992.

[21] LOPEZ H,BENARD M,SAINT-AUBERT E,et al.Novel model of placental tissue explants infected by cytomegalovirus reveals different permissiveness in early and term placentae and inhibition of indoleamine 2,3-dioxygenase activity[J].Placenta,2011,32(7):522-530.

[22] ENTRICAN G,WATTEGEDERA S,ROCCHI M,et al.Pregnancy,indoleamine 2,3-dioxygenase (IDO) and chlamydial abortion:an unresolved paradox[J].Veterinary Microbiology,2009,135(1):98-102.
[23] MOSNIER E,DOURMAD J Y,ETIENNE M,et al.Feed intake in the multiparous lactating sow:its relationship with reactivity during gestation and tryptophan status[J].Journal of Animal Science,2009,87(4):1282-1291.

[24] 邱时秀.日粮色氨酸水平对感染伪狂犬病毒妊娠雌鼠繁殖性能和免疫功能的影响[D].硕士学位论文.雅安:四川农业大学,2009.
[25] PLATTEN M,WICK W,VAN DEN EYNDE B J.Tryptophan catabolism in cancer:beyond IDO and tryptophan depletion[J].Cancer Research,2012,72(21):5435-5440.

[26] JENABIAN M A,PATEL M,KEMA I,et al.Distinct tryptophan catabolism and Th17/Treg balance in HIV progressors and elite controllers[J].PLoS One,2013,8(10):e78146.
[27] BAUER T M,JIGA L P,CHUANG J J,et al.Studying the immunosuppressive role of indoleamine 2,3-dioxygenase:tryptophan metabolites suppress rat allogeneic T-cell responses
in vitro and
in vivo[J].Transplant International,2005,18(1):95-100.

[28] HOU W P,HUANG G,CAO X J,et al.Suppression of experimental autoimmune glomerulonephritis by tryptophan[J].Journal of Nephrology,2014,27(1):19-28.

[29] LIN H M,BARNETT M P,ROY N C,et al.Metabolomic analysis identifies inflammatory and noninflammatory metabolic effects of genetic modification in a mouse model of Crohn’s disease[J].Journal of Proteome Research,2010,9(4):1965-1975.

[30] ZHU B T.Development of selective immune tolerance towards the allogeneic fetus during pregnancy:role of tryptophan catabolites (review)[J].International Journal of Molecular Medicine,2010,25(6):831-835.
[31] DAI X C,ZHU B T.Suppression of T-cell response and prolongation of allograft survival in a rat model by tryptophan catabolites[J].European Journal of Pharmacology,2009,606(1/2/3):225-232.