Ambrosi, P, Rolland, PH, Bodard, H, Barlatier, A, Charpiot, P, Guisgand, G, Friggi, A, Ghiringhelli, O, Habib, G, Bouvenot, G, Garçon, D & Luccioni, R (1999) Effect of folate supplementation in hyperhomocysteinemic pigs. Journal of the American College of Cardiology 34, 274–279.
Antony, AC (1996) Folate receptors. Annual Review of Nutrition 16, 501–521.
Ashworth, CJ (1994) Nutritional factors related to embryonic mortality in the domestic species. In Embryonic Mortality in Domestic Species, pp. 179–194 [Zavy, MT and Geisert, RD, editors]. Boca Raton, FL: CRC Press Inc.
Barkow, B, Pietrzik, K & Flachowsky, G (2001) Effect of folic acid supplement on homocysteine in plasma of gestating sows. Archives of Animal Nutrition 54, 81–85.
Bässler, KH (1997) Enzymatic effects of folic acid and vitamin B12. International Journal of Vitamin Nutrition 67, 385–388.
Bilodeau, R, Matte, JJ, de Passillé, AMB, Girard, CL & Brisson, GJ (1989) Effects of floor type on serum folates, serum vitamin B12, plasma biotin and on growth performances of pigs. Canadian Journal of Animal Science 69, 779–788.
Canadian Council on Animal Care (1993) Guide to the Care and Use of Experimental Animals, vol. 1, Ottawa, Ont.: CCAC.
Chen, LH, Liu, ML, Hwang, HY, Chen, LS, Korenberg, J & Shane, B (1997) Human methionine synthase: cDNA cloning, gene localization, and expression. Journal of Biological Chemistry 272, 3628–3634.
Czeizel, AE & Dudas, I (1992) Prevention of the first occurrence of neural-tube defects by periconceptional vitamin supplementation. New England Journal of Medicine 327, 1832–1835.
Duquette, J, Matte, JJ, Farmer, C, Girard, CL & Laforest, JP (1997) Pre- and post-mating dietary supplements of folic acid and uterine secretory activity in gilts. Canadian Journal of Animal Science 77, 415–420.
Finkelstein, JD (1990) Methionine metabolism in mammals. Journal of Nutritional Biochemistry 1, 228–237.
Frederick, GL & Brisson, GJ (1961) Some observations on the relationship between vitamin B12 and reproduction in swine. Canadian Journal of Animal Science 41, 212–219.
Friedman, PA, Shia, MA & Wallace, JK (1977) A saturable high affinity binding site for transcobalamin II–vitamin B12 complexes in human placental membrane preparations. Journal of Clinical Investigation 59, 51–58.
Goyette, P, Summer, JS, Milos, R, Duncan, AM, Rosenblatt, DS, Matthews, R & Rozen, R (1994) Human methylenetetrahydrofolate reductase: isolation of cDNA, mapping and mutation identification. Nature Genetics 7, 195–200.
Guay, F, Matte, JJ, Girard, CL, Palin, MF, Giguère, A & Laforest, JP (2002) Effect of genotype and parity, as well as folic acid and glycine supplement on embryonic development and folate metabolism during early pregnancy in pigs. Journal of Animal Science, (In the press).
Haley, CS & Lee, GJ (1993) Genetic basis of prolificacy in Meishan pigs. Journal of Reproduction and Fertility Supplement 48, 247–259.
Harmon, DL, Shields, DC, Woodside, JV, McMaster, D, Yarnell, JW, Young, IS, Peng, K, Shane, B, Evans, AE & Whitehead, AS (1999) Methionine synthase D919G polymorphism is significant but modest determinant of circulating homocysteine concentrations. Genetics Epidemiology 17, 298–309.
Jacques, PF, Bostom, AG, Williams, RR, Ellison, RC, Eckfeldt, JH, Rosenberg, IH, Selhub, J & Rozen, R (1996) Relation between folate status, a common mutation in methylenetetrahydrofolate reductase, and plasma homocysteine concentrations. Circulation 93, 7–9.
Jacques, PF, Selhub, J, Bostom, AG, Wilson, PWF & Rosenberg, IH (1999) The effect of folic acid fortification on plasma folate and total homocysteine concentrations. New England Journal of Medicine 340, 1449–1454.
Johansson, S, Dencker, L & Dantzer, V (2001) Immunohistochemical localization of retinoid binding proteins at the materno–fetal interface of the porcine epitheliochorial placenta. Biology of Reproduction 64, 60–68.
Johnson, RK (1981) Crossbreeding in swine: experimental results. Journal of Animal Science 52, 906–923.
Laforest, JP, King, GJ & Kennedy, TG (1992) Effect of topical application of oestradiol-17β and PGE2 on PGE-binding sites in porcine endometrium. Reproduction Nutrition and Development 32, 93–104.
Limpach, A, Dalton, M, Miles, R & Gadson, P (2000) Homocysteine inhibits retinoic acid synthesis: a mechanism for homocysteine-induced congenital defects. Experimental Cell Research 260, 166–174.
Lindemann, MD & Kornegay, ET (1989) Folic acid supplementation to diets of gestating–lactating swine over multiple parities. Journal of Animal Science 67, 459–464.
McNulty, H, McPartlin, JM, Weir, DG & Scott, JM (1995) Folate catabolism is related to growth rate in weaning rats. Journal of Nutrition 125, 99–103.
Malinow, MR, Kang, SS, Taylor, LM, Wong, PWK, Coull, B, Inahara, T, Mukerjee, D, Sexton, G & Upson, B (1989) Prevalence of hyperhomocyst(e)inemia in patients with peripheral arterial occlusion disease. Circulation 79, 1180–1188.
Matte, JJ, Farmer, C, Girard, CL & Laforest, JP (1996) Dietary folic acid, uterine function and early embryonic development in sows. Canadian Journal of Animal Science 76, 427–433.
Matte, JJ & Girard, CL (1996) Changes of serum and blood volumes during gestation and lactation in multiparous sows. Canadian Journal of Animal Science 76, 263–266.
Matte, JJ, Girard, CL & Brisson, GJ (1984) Folic acid and reproductive performance of sows. Journal of Animal Science 59, 1020–1025.
Matte, JJ, Girard, CL & Tremblay, GF (1993) Effect of long-term addition of folic acid on folate status, growth performance, puberty attainment, and reproductive capacity of gilts. Journal of Animal Science 71, 151–157.
Matte, JJ, Ponter, AA & Sève, B (1997) Effects of chronic parenteral pyridoxine and acute enteric tryptophan on pyridoxine status, glycemia and insulinemia stimulated by enteric glucose in weanling piglets. Canadian Journal of Animal Science 77, 663–668.
Melnyk, S, Progribna, M, Progribny, I, Hine, RJ & James, SJ (1999) A new HPLC method for the stimultaneous determination of oxidized and reduced plasma aminothiols using coulometric electrochemical detection. Journal of Nutritional Biochemistry 10, 490–497.
Menezo, Y, Khatchadourian, C, Gharib, A, Hamidi, J, Greenland, T & Sarda, N (1989) Regulation of S-adenosyl methionine synthesis in mouse embryo. Life Sciences 44, 1601–1609.
Mills, JL, McPartlin, JM, Kirke, PN, Lee, YJ, Conley, MR, Weir, DG & Scott, JM (1995) Homocysteine metabolism in pregnancies complicated by neural-tube defects. Lancet 345, 149–151.
Nakagawa, H & Kimura, H (1968) Purification and properties of cystathionine synthetase from rat liver: separation of cystathionine synthetase from serine hydratase. Biochemical and Biophysical Research Communication 32, 208–212.
Natsuhori, M, Shimoda, M & Kokue, EI (1996) Alteration of plasma folates in gestating sows and newborn piglets. American Journal of Physiology 270, R99–R104.
Nelen, WLDM, Bulten, J, Steegers, EAP, Blom, HJ, Hanselaar, AGJM & Eskes, TKAB (2000) Maternal homocysteine and chorionic vascularization in recurrent early pregnancy loss. Human Reproduction 15, 954–960.
Pearson, PL, Klemcke, HG, Christenson, RK & Vallet, JL (1998) Porcine endometrial haptocorrin: cloning of partial cDNA and expression from days 10 to 40 of gestation. Biology of Reproduction 58, Suppl. 1, 193.
Perry, JS (1981) The mammalian fetal membranes. Journal of Reproduction and Fertility 62, 321–335.
Pope, WF & First, NL (1985) Factors affecting the survival of pig embryos. Theriogenology 23, 91–105.
Pusateri, AE, Rothschild, MF, Warner, CM & Ford, SF (1990) Changes in morphology, cell number, cell size and cellular estrogen content of individual littermate pig conceptuses on days 9 to 13 of gestation. Journal of Animal Science 68, 3727–3735.
Rivera, RM, Youngs, CR & Ford, SP (1996) A comparison of the number of inner cell mass and trophectoderm cells of preimplantation Meishan and Yorkshire pig embryos at similar developmental stages. Journal of Reproduction and Fertility 106, 111–116.
Rosenquist, TH, Ratashak, SA & Selhub, J (1996) Homocysteine induces congenital defects of the heart and neural tube: Effect of folic acid. Proceedings of National Academy of Sciences USA 93, 15227–15232.
Rosenquist, TH, Schneider, AM & Monaghan, DT (1999) N-Methyl-D-aspartate receptor agonist modulates homocysteine-induced developmental abnormalities. FASEB Journal 13, 1523–1531.
Schieffer, GW, Wheeler, GP & Cimino, CO (1984) Determination of folic acid in commercial diets by anion-exchange solid-phase extraction and subsequent reversed-phase high-performance liquid chromatography. Journal of Liquid Chromatography 7, 2659–2670.
Schwartz, SM, Siscovick, DS, Malinow, R, Rosendaal, FR, Beverly, RK, Hess, DL, Psaty, BM, Longstreth, WT, Koepsell, TD, Raghunathan, TE & Reitsman, PH (1997) Myocardial infarction in young women in relation to plasma total homocysteine, folate and a common variant in the methylenetetrahydrofolate reductase gene. Circulation 96, 412–417.
Scott, JM (1999) Folate and vitamin B12. Proceedings of the Nutrition Society 58, 441–448.
Scott, JM & Weir, DG (1981) The methyl folate trap. Lancet 15, 337–340.
Signer, EN, Dubrova, YE & Jeffreys, AJ (2000) Are DNA profiles breed-specific? A pilot study in pigs. Animal Genetics 31, 273–276.
Smith, SM, Dickman, ED, Power, SC & Lancman, J (1998) Retinoids and their receptors in vertebrate embryogenesis. Journal of Nutrition 128, 467S–470S.
Smolin, LA, Crenshaw, TD, Kurtycz, D & Benevenga, NJ (1983) Homocyst(e)ine accumulation in pigs fed diets deficient in vitamin B-6: relationship to atherosclerosis. Journal of Nutrition 113, 2122–2133.
Srivastava, SK & Beutler, E (1973) A new fluorometric method for the determination of pyridoxal 5 phosphate. Biochimica et Biophysica Acta 304, 765–773.
Steen, MT, Boddie, AM, Fisher, AJ, Macmahon, W, Saxe, D, Sullivan, KM, Dembure, PP & Elsas, LJ (1998) Neural-tube-defects are associated with low concentration of cobalamin (vitamin B12) in amniotic fluid. Prenatal Diagnosis 18, 545–555.
Tremblay, GF, Matte, JJ, Dufour, JJ & Brisson, GJ (1989) Survival rate and development of fetuses during the first 30 days of gestation after folic acid addition to a swine diet. Journal of Animal Science 67, 724–732.
Vallet, JL, Christenson, RK & Klemcke, HG (1999 a) Technical note: A radioimmunoassay for porcine intra-uterine folate binding protein. Journal of Animal Science 77, 1236–1240.
Vallet, JL, Smith, TPL, Soustegard, T, Pearson, PL, Christenson, RK & Klemcke, HG (1999 b) Isolation of complementary deoxyribonucleic acids encoding putative secreted and membrane-bound folate binding proteins from endometrium of swine. Biology of Reproduction 61, 372–379.
VanAerts, LAGJM, Blom, HJ, Deabreu, RA, Trijbels, FJM, Eskes, TKAB, Peereboom-Stegeman, JHJC & Noordhoek, J (1994) Prevention of neural tube defects by and toxicity of L-homocysteine in cultured postimplantation rat embryos. Teratology 50, 348–360.
Whittemore, CT, Tullis, JB & Emmans, GC (1988) Protein growth in pigs. Animal Production 46, 437–445.
Wigertz, K & Jägerstad, M (1995) Comparison of HPLC and radioprotein-binding assay for determination of folates in milk and blood samples. Food Chemistry 54, 429–436.
Wilmut, I, Sales, DI & Ashworth, CJ (1985) The influence of variation in embryo stage and maternal hormone profiles on embryo survival in farm animals. Theriogenology 23, 107–119.
Wilson, ME & Ford, SP (1997) Differences in trophectoderm mitotic rate and P450 17α-hydroxylase expression between late preimplantation Meishan and Yorkshire conceptuses. Biology of Reproduction 56, 380–385.
Yen, HF, Isler, GA, Harvey, WR & Irvin, KM (1987) Factors affecting reproductive performance in swine. Journal of Animal Science 64, 1340–1348.
Yelich, JV, Pomp, D & Geisert, RD (1997) Detection of transcripts for retinoic acid receptors, retinal-binding protein, and transforming growth factors during rapid trophoblastic elongation in the porcine conceptus. Biology of Reproduction 57, 286–294.