[1] HUTHER G.The contribution of extrapineal sites of melatonin synthesis to circulating melatonin levels in higher vertebrates[J].Experientia,1993,49(8):665-670.
[2] CHEN C Q,FICHNA J,BASHASHATI M,et al.Distribution,function and physiological role of melatonin in the lower gut[J].Word Journal of Castroeterology,2011,17(34):3888-3898.
[3] LEE P P N,SHIU S Y W,CHOW P H,et al.Regional and diurnal studies of melatonin and Melatonin binding sites in the duck gastro-intestinal tract[J].Biological Signals,1995,4(4):212-224.
[4] MAWE G M,HOFFMAN J M.Serotonin signalling in the gut-functions,dysfunctions and therapeutic targets[J].Nature Reviews Gastroenterology & Hepatology,2013,10(8):473-486.
[5] BUBENIK G A,PANG S F,HACKER R R,et al.Melatonin concentrations in serum and tissues of porcine gastrointestinal tract and their relationship to the intake and passage of food[J].Journal of Pineal Research,1996,21(4):251-256.
[6] BUBENIK G A,BROWN G M,GROTA L J.Immunohistological localization of melatonin in the rat digestive system[J].Experientia,1977,33(5):662-623.
[7] BUBENIK G A.Localization of melatonin in the digestive tract of the rat.Effect of maturation,diurnal variation,melatonin treatment and pinealectomy[J].Hormone Research,1980,12(6):313-323.
[8] NAMBOODIRI M A A,SUGDEN D,KLEIN D C,et al.5-hydroxytryptophan elevates serum melatonin[J].Science,1983,221(4611):659-661.
[9] HARDELAND R,FUHRBERG B.Ubiquitous melatonin-presence and effects in unicells,plants and animals[J].Trends in Comparative Biochemistry & Physiology,1996(2):25-45.
[10] ERSPAMER V,ASERO B.Identification of enteramine,the specific hormone of the enterochromaffin cell system,as 5-hydroxytryptamine[J].Nature,1952,169(4306):800-801.
[11] BUBENIK G A,BALL R O,PANG S F.The effect of food deprivation on brain and gastrointestinal tissue levels of tryptophan,serotonin,5-hydroxyindoleacetic acid,and melatonin[J].Journal of Pineal Research,1992,12(1):7-16.
[12] 陈中健,吴秀菊,朱翠,等.梅花猪胃肠道5-羟色胺、胃饥饿素和胰高血糖素样肽-1免疫阳性细胞分布特征研究[J].中国畜牧兽医,2017,44(5):1498-1507.
[13] BUBENIK G A,HACKER R R,BROWN G M,et al.Melatonin concentrations in the luminal fluid,mucosa,and muscularis of the bovine and porcine gastrointestinal tract[J].Journal of Pineal Research,1999,26(1):56-63.
[14] MUKHERJEE S,MAITRA S K.Gut Melatonin in vertebrates:chronobiology and physiology[J].Frontiers in Ecdocrinology,2015,6:112.
[15] VERA H,TIJMES M,RONCO A M,et al.Melatonin binding sites in interstitial cells from immature rat testes[J].Biological Research,1993,26(3):337.
[16] HUETHER G.Melatonin synthesis in the gastrointestinal tract and the impact of nutritional factors on circulating melatonin[J].Annals of the New York Academy of Sciences,1994,719(1):146-158.
[17] LEE P P N,PANG S F.Melatonin and its receptors in the gastrointestinal tract[J].Neurosignals,1993,2(4):181-193.
[18] BULBRING E,LIN R C.The effect of intraluminal application of 5-hydroxytryptamine and 5-hydroxytryptophan on peristalsis; the local production of 5-HT and its release in relation to intraluminal pressure and propulsive activity[J].Journal of Physiology,1958,140(3):381-407.
[19] TAN D X,MANCHESTER L C,REITER R J,et al.High physiological levels of melatonin in the bile of mammals[J].Life Science,1999,65(23):2523-2529.
[20] MUKHERJEE S,MONIRUZZAMAN M,MAITRA S K.Daily and seasonal profiles of gut melatonin and their temporal relationship with pineal and serum melatonin in carp
Catla catla under natural photo-thermal conditions[J].Biological Rhythm Research,2014,45(2):301-315.
[21] BUBENIK G A,PANG S F,COCKSHUT J R,et al.Circadian variation of portal,arterial and venous blood levels of melatonin in pigs and its relationship to food intake and sleep[J].Journal of Pinal Research,2000,28(1):9-15.
[22] KOLBABAVÁ T,MALKEMPER P,BARTOŠ L,et al.Effect of exposure to extremely low frequency magnetic fields on melatonin levels in calves is seasonally dependent[J].Scientific Reports,2015,5:14206.
[23] NAMBOODIRI M A A,SUGDEN D,KLEIN D C,et al.Serum melatonin and pineal indoleamine metabolism in a species with a small day/night N-acetyltransferase rhythm[J].Comparative Biochemistry and Physiology Part B:Comparative Biochemistry,1985,80(4):731-736.
[24] DOUGHERTY R W,RILEY J L,COOK H M.Changes in motility and pH in the digestive tract of experimentally overfed sheep[J].American Journal of Veterinary Research,1975,36(6):827-829.
[25] SHIRKEY T W,SIGGERS R H,GOLDADE B G,et al.Effects of commensal bacteria on intestinal morphology and expression of proinflammatory cytokines in the gnotobiotic pig[J].Experimental Biology and Medicine,2006,231(8):1333-1345.
[26] RUCKEBUSCH Y,MEIRIEU O,VON RITTER C,et al.Measurement of monoamines and their metabolites in the interstitial fluid of the gut[J].Journal of Pharmacological Methods,1985,13(2):167-177.
[27] 杨银凤.家畜解剖学及组织胚胎学[M].4版.北京:中国农业出版社,2011.
[28] WADE P R,CHEN J,JAFFE B,et al.Localization and function of a 5-HT transporter in crypt epithelia of the gastrointestinal tract[J].The Journal of Neuroscience,1996,16(7):2352-2364.
[29] WANG J,FAN H,HAN Y,et al.Characterization of the microbial communities along the gastrointestinal tract of sheep by 454 pyrosequencing analysis[J].Asian-Australas Journal of Animal Science,2017,30(1):100-110.
[30] MAGNUSSEN I,JENSEN T S,RAND J H,et al.Plasma accumulation of metabolism of orally administered single dose
L-5-hydroxytryptophan in man[J].Acta Pharmacolgica et Toxicologica,1981,49(3):184-189.
[31] JOSEPH M H,BAKER H F.The determination of 5-hydroxytryptophan and its metabolites in plasma following administration to man[J].Clinica Chimica Acta,1976,72(1):125-131.
[32] BOGDANSKI D F,WEISSBACH S.Pharmacological studies with the serotonin precursor,5-hydroxytryptophan[J].Journal of Pharmacology and Experiment Therapeutics,1958,122(2):182-194.
[33] SUGDEN D,NAMBOODIRI M A A,KLEIN D C,et al.Ovine pineal indoles:effects of
L-tryptophan or
L-5-hydroxytryptophan administration[J].Journal of Neurochemistry,1985,44(3):769-772.
[34] HURTHER G,POEGGELER B,REIMER A,et al.Effect of tryptophan administration on circulating melatonin levels in chicks and rats:evidence for stimulation of melatonin synthesis and release in the gastrointestinal tract[J].Life Science,1992,51(12):945-953.
