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Phyto-oestrogens through the life cycle

Published online by Cambridge University Press:  28 February 2007

Aedin Cassidy*
Affiliation:
Centre for Nutrition and Food Safety, School of Biological Sciences, University of Surrey, Guildford GU2 5XH, UK
Marian Faughnan
Affiliation:
Centre for Nutrition and Food Safety, School of Biological Sciences, University of Surrey, Guildford GU2 5XH, UK
*
*Corresponding author: Dr Aedin Cassidy, present address Unilever Research, Colworth House, Sharnbrook, Beds. MK44 1QL, fax +44 (0)1234 222552, email [email protected]
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Abstract

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The growing interest in the role of phyto-oestrogens in human health has prompted scientists to evaluate the risk : benefit which would result from consuming high levels of these compounds at different stages of the life cycle. These compounds have been shown to exert a wide range of hormonal and non-hormonal activities in animals and in vitro, and these activities suggest plausible mechanisms for potential health effects in human subjects consuming phyto-oestrogen-rich diets. In addition, experimental and epidemiological data are available supporting the concept that phyto-oestrogen-rich diets exert physiological effects in vivo; however, their relative importance to human health remains to be elucidated. Our understanding of factors involved in their absorption and metabolism, including the role of intestinal microflora, is limited, and these factors together with dose-related effects may well be important in determining clinical efficacy.

Type
The Nutrition Society Medal Lecture
Copyright
Copyright © The Nutrition Society 2000

References

Adlercreutz, H, Bannwart, C, Wahala, K, Makela, T, Brunow, G, Hase, T, Arosenema, PJ, Kellis, JTJ & Vickory, LE (1993) Inhibition of human aromatase by mammalian lignans and isoflavanoid phytoestrogens. Journal of Steroid Biochemistry 44, 147153.CrossRefGoogle Scholar
Adlercreutz, H, Mousavi, Y, Clark, J, Hockerstedt, K, Hamalainem, E, Wahala, K, Makela, T & Hase, T (1992) Dietary phytoestrogens and cancer: in vitro and in vivo studies. Journal of Steroid Biochemistry and Molecular Biology 41, 331337.CrossRefGoogle ScholarPubMed
Aldercreutz, H, Yamada, MD, Wahala, K & Watanabe, MD (1999) Maternal and neonatal phytoestrogens in Japanese women during birth. American Journal of Obstetrics and Gynecology 180, 737743.Google Scholar
Anderson, JJ, Ambrose, WW & Garner, SC (1998) Biphasic effect of genistein on bone tissue in the ovariectomized, lactating rat model. Proceedings of the Society for Experimental Biology and Medicine 217, 345350.CrossRefGoogle Scholar
Abertazzi, P, Pansini, F, Bonaccona, G, Zanotti, KL, Forini, E & DeAloysio, D (1998) The effects of dietary soy supplementation on hot flushes. Obstetrics and Gynecology 91, 611.Google Scholar
Anderson, JW, Johnstone, BM & Cook-Newell, ME (1995) Meta-analysis of the effects of soy protein intake on serum lipids. New England Journal of Medicine 333, 276282.CrossRefGoogle ScholarPubMed
Anthony, MS & Clarkson, TB (1998) Comparison of soy phyto-estrogens and oestrogens on atherosclerosis progression in postmenopausal monkeys. Circulation 97, 829.Google Scholar
Anthony, MS, Clarkson, TB, Bullock, BC & Wagner, JD (1997) Soy protein versus soy phyto-estrogens in the prevention of diet-induced coronary artery atherosclerosis of male cynamolgus monkeys. Arteriosclerosis, Thrombosis and Vascular Biology 17, 25242531.CrossRefGoogle Scholar
Anthony, MS, Clarkson, TB, Hughes, CL, Morgan, TM & Burke, GL (1996) Soyabean isoflavones improve cardiovascular risk factors without affecting the reproductive system of peripubertal rhesus monkeys. Journal of Nutrition 126, 4350.CrossRefGoogle Scholar
Arjmandi, BH, Alekel, L, Hollis, BW, Amin, D, Stacewicz-Sapuntzakis, M, Guo, P & Kukreja, SC (1996) Dietary soybean protein prevents bone loss in an ovariectomized rat model of osteoporosis. Journal of Nutrition 126, 161167.CrossRefGoogle Scholar
Arjmandi, BH, Getlinger, MJ, Goyal, NV, Alekel, L, Hasler, CM, Juma, S, Drum, ML & Hollis, BW (1998) Role of soy protein with normal or reduced isoflavone content in reversing bone loss induced by ovarian hormone deficiency in rats. American Journal of Clinical Nutrition 68, 1358S1363S.CrossRefGoogle ScholarPubMed
Ayres, DC & Loike, JD (1990) Lignans .Cambridge: Cambridge University Press.CrossRefGoogle Scholar
Balmir, F, Staack, R, Jeffrey, E, Berber-Jimenez, MD, Wang, L & Potter, SM (1996) An extract of soy flour influences serum cholesterol and thyroid hormones in rats and hamsters. Journal of Nutrition 126, 30463053.CrossRefGoogle Scholar
Baum, JA, Teng, H, Erdman, JW, Weige, RM, Klein, BP, Persky, VW, Freels, S, Surya, P, Bakhit, RM, Romas, E, Shay, NF & Potter, SM (1998) Long-term intake of soy protein improves blood lipid profiles and increases mononuclear cell LDL receptor mRNA in hypercholesterolaemic postmenopausal women. American Journal of Clinical Nutrition 68, 545551.CrossRefGoogle Scholar
Borriello, SP, Setchell, KDR, Axelson, M & Lawson, AM (1985) Production and metabolism of lignans by the human faecal flora. Journal of Applied Bacteriology 58, 3743.CrossRefGoogle ScholarPubMed
Brown, A, Jolly, P & Wei, H (1998) Genistein modulates neuroblastoma cell proliferation and differentiation through induction of apotosis and regulation of tyrosine kinase activity and N-myc expression. Carcinogenesis 19, 991997.CrossRefGoogle Scholar
Brzezinski, A, Adlercreutz, H, Shaoul, R, Rosler, A, Shmueli, A, Tanos, V & Schenker, JG (1997) Short-term effects of phytoestrogen-rich diets on postmenopausal women. Menopause 4, 8994.CrossRefGoogle Scholar
Cassidy, A (1997) Physiological effects of phyto-oestrogens in relation to cancer and other human health risks. Proceedings of the Nutrition Society 53, 399417.Google Scholar
Cassidy, A, Bingham, S & Setchell, KDR (1994) Biological effects of isoflavones present in soy in premenopausal women: implications for the prevention of breast cancer. American Journal of Human Nutrition 60, 333340.Google Scholar
Cassidy, A, Bingham, S & Setchell, K (1995) Biological effects of isoflavones in young women – the importance of the chemical composition of soya products. British Journal of Nutrition 74, 587590.CrossRefGoogle Scholar
Cassidy, A, Faughnan, M, Hughes, R, Cathcart, A, Fraser, C, Setchell, K & Bingham, S (1998) Hormonal effects of phytoestrogens in postmenopausal women and middle-aged men. American Journal of Clinical Nutrition 68, 1531S.Google Scholar
Cassidy, A & Griffin, B (1999) Phyto-estrogens: a potential role in the prevention of CHD. Proceedings of the Nutrition Society 58, 193199.Google Scholar
Clarkson, TB (1997) Can soy supplementation substitute for traditional hormone replacement therapy?Menopausal Medicine 5, 15.Google Scholar
Col, NF, Eckman, MH, Karas, RH, Pauker, SG, Goldberg, RJ, Ross, EM, Orr, RK & Wong, JB (1997) Patient-specific decisions about HRT in postmenopausal women. Journal of the American Medical Association 277, 11401147.CrossRefGoogle Scholar
Colditz, GA, Hankinson, SE, Hunter, DJ, Willet, WC, Manson, JE & Stampfer, MJ (1995) The use of estrogens and progestins and the risk of breast cancer in postmenopausal women. New England Journal of Medicine 332, 15891593.Google Scholar
Coward, L, Barnes, NC, Setchell, KDR & Barnes, S (1993) Genistein and daidzein, and their β-glycoside conjugates: antitumor isoflavones in soyabean foods from American and Asian diets. Journal of Agricultural and Food Chemistry 41, 14611467.CrossRefGoogle Scholar
Crouse, JR, Terry, JG, Morgan, TM, McGill, BL, Davis, DH, King, T, Ellis, JE & Burke, GL (1998) Soy protein containing isoflavones reduce plasma concentrations of lipids and lipoprotein. Circulation 97, 816.Google Scholar
Eldridge, AC & Kwolek, WF (1983) Soybean isoflavones: effect of environment and variety on composition. Journal of Agricultural and Food Chemistry 31, 394396.CrossRefGoogle ScholarPubMed
Etinger, B, Black, DM, Mitlak, BH, Knickerbocker, RK, Nickelsen, T, Genant, HK, Christiansen, C, Delmas, PD, Zanchetta, JR, Stakkestad, J, Gluer, CG, Krueger, K, Cohen, FJ, Eckert, S, Ensrud, KE, Avioli, LV, Lips, P & Cummings, SR (1999) Reduction of vertebral fracture risk in postmenopausal women with osteoporosis treated with raloxifene. Journal of the American Medical Association 282, 637645.Google Scholar
Evans, BAG, Griffiths, K & Morton, MS (1995) Inhibition of 5α-reductase in genital skin fibroblasts and prostate tissue by dietary lignans and isoflavanoids. Journal of Endocrinology 147, 295302.CrossRefGoogle Scholar
Felson, DT, Zhang, Y, Hannan, MT, Keil, DP, Wilson, PW & Anderson, JJ (1993) The effect of postmenopausal estrogen therapy on bone density in elderly women. New England Journal of Medicine 329, 11411146.CrossRefGoogle Scholar
Fotsis, T, Pepper, MS, Montesano, R, Aktas, E, Brett, S, Schweigerer, L, Rasku, S, Wahala, K & Adlercreutz, H (1998) Phytoestrogens and inhibition of angiogenesis. Ballière's Clinical Endocrinology and Metabolism 12, 649666.Google Scholar
Gavaler, JS, Van Thiel, DH & Galvao-Teles, A (1991) Oestrogenic responses in normal postmenopausal women to administration of the phytoestrogens in bourbon whiskey. Hepatology 14, 87.Google Scholar
Griffiths, K, Denis, L, Turkes, A & Morton, MS (1998) Phytoestrogens and diseases of the prostate gland. Baillière's Clinical Endocrinology and Metabolism 12, 625647.Google Scholar
Hahlbrock, K (1981) Flavanoids. In The Biochemistry of Plants: A Comprehensive Treatise – Secondary Plant Products, pp. 425456 [Conn, EE, editor]. New York: Academic Press.Google Scholar
Ho, SC (1996) Body measurements, bone mass and fractures – does the East differ from the West. Clinical Orthopedics and Related Research 323, 7580.Google Scholar
Honore, EK, Williams, JK, Anthony, MS & Clarkson, TB (1997) Soy isoflavones enhance coronary vascular reactivity in atherosclerotic female macaques. Fertility and Sterility 67, 148154.Google Scholar
Ibrahim, A-R & Abdul-Haj, YJ (1990) Aromatase inhibition by flavanoids. Journal of Steroid Biochemistry and Molecular Biology 37, 257260.CrossRefGoogle Scholar
Ishida, H, Uesugi, T, Hirai, K, Toda, I, Nukaya, H, Yokotsuka, K & Tsuji, K (1998) Preventive effects of the plant isoflavones, daidzin and genistin, on bone loss in ovariectomized rats fed a calcium-deficient diet. Biological Pharmacology Bulletin 21, 6266.Google Scholar
Joannou, GE, Kelly, GE, Reeder, AY, Waring, MA & Nelson, C (1995) A urinary profile study of dietary phytoestrogens. Journal of Steroid Biochemistry 54, 167184.Google Scholar
Jacobs, M (1999) Molecular modelling of oestrogen receptors, alpha and beta, and their structure activity relationships with oestrogenic compounds. MSc Thesis, University of Surrey.Google Scholar
Kelly, GE, Joannou, GE, Reader, AY, Nelson, C & Waring, MA (1995) The variable metabolic response in dietary isoflavones in humans. Proceedings of the Society for Experimental Biology and Medicine 208, 4043.CrossRefGoogle ScholarPubMed
Key, TJA, Thorogood, M, Appleby, PN & Burr, ML (1996) Dietary habits and mortality in 11000 vegetarians and health conscious people: results of a 17 year follow up. British Medical Journal 313, 775779.CrossRefGoogle Scholar
Kim, H, Peterson, TG & Barnes, S (1998) Mechanisms of action of the soy isoflavone genistein: emerging role of its effects through transforming growth factor beta signalling. American Journal of Clinical Nutrition 68, 1418S1425S.Google Scholar
King, RA & Bursill, DB (1998) Plasma and urinary kinetics of the isoflavones daidzein and genistein after a single soy meal in humans. American Journal of Clinical Nutrition 67, 867872.Google Scholar
Kirk, EA, Sutherland, P, Wang, SA, Chait, A & LeBoeuf, RC (1998) Dietary isoflavones reduce plasma cholesterol and atherosclerosis in C57BL/6 mice but not LDL receptor-deficient mice. Journal of Nutrition 128, 954959.Google Scholar
Knight, DC, Howes, JB & Eden, JA (1998) The effects of Promensil TM, an isoflavone extract on menopausal symptoms. Climacteric 1, 16.Google Scholar
Kudou, S, Fleuri, Y, Welti, D, Magnolata, D, Uchida, T, Kitamura, K & Okubo, K (1991) Malonyl isoflavone glycosides in soyabean seeds (Glycine max merrill). Agricultural and Biological Chemistry 55, 22272233.Google Scholar
Kuiper, GG, Enmark, E, Pelto-Huikkp, M, Nilsson, S & Gustafasson, J-A (1996) Cloning of a novel receptor expressed in rat prostate and ovary. Proceedings from the National Academy of Sciences USA 93, 59255930.CrossRefGoogle ScholarPubMed
Kuiper, GG & Gustafsson, J-A (1997) The novel estrogen receptor-beta subtype potential role in the cell and promotor specific actions of estrogens and anti-estrogens. FEBS Letters 410, 8790.Google Scholar
Kupier, GG, Lemmen, JG, Carlsson, B, Corton, JC, Safe, SH, van der, Saag P, van der, Berg B & Gustaffsson, J-A (1998) Interaction of estrogenic chemicals and phytoestrogens with estrogen receptor beta. Endocrinology 139, 42524263.CrossRefGoogle Scholar
Kyle, E, Neckers, L, Takimoto, C, Curt, G & Bergan, R (1997) Genistein-induced apoptosis of prostate cancer cells is preceded by a specific decrease in focal adhesion kinase activity. Molecular Pharmacology 51, 193200.Google Scholar
Lamartinière, CA, Moore, JB, Brown, NM, Thompson, R, Hardin, M & Barnes, S (1995) Genistein suppresses mammary cancer in rats. Carcinogenesis 16, 28332840.Google Scholar
Lamartinière, CA, Zhang, J-X & Cotroneo, MS (1998) Genistein studies in rats: potential for breast cancer prevention and reproductive and developmental toxicity. American Journal of Clinical Nutrition 68, 1400S1405S.CrossRefGoogle ScholarPubMed
Lampe, JW, Karr, SC, Hutchins, AM & Slavin, JL (1998) Urinary equol excretion with a soy challenge: influence of habitual diet. Proceedings of the Society for Experimental Biology and Medicine 217, 335339.Google Scholar
McNicol, A (1993) The effects of genistein on platelet function are due to thromboxane receptor antagonism rather than inhibition of tyrosine kinase. Prostaglandins, Leukotrienes and Essential Fatty Acids 48, 379384.Google Scholar
Makela, SI, Pylkkanen, LH, Santti, RSS & Adlercreutz, H (1995) Dietary soyabean may be antiestrogenic in male mice. Journal of Nutrition 125, 437445.Google ScholarPubMed
Makela, S, Savolainen, H, Aavik, E, Myllarniemi, M, Strauss, L, Taskinen, E, Gustafsson, JA & Hayry, P (1999) Differentiation between vasculoprotective and uterotrophic effects of ligands with different affinities to estrogen receptors alpha and beta. Proceedings of the National Academy of Sciences USA 96, 70777082.Google Scholar
Messina, MJ, Persky, V, Setchell, KDR & Barnes, S (1994) Soy intake and cancer risk: a review of the in vivo and in vitro data. Nutrition and Cancer 21, 113131.Google Scholar
Milligan, SR, Kalita, JS, Heyerick, A, Rong, H, De, Cooman L & De, Keukeleire D (1999) Identification of a potent phytoestrogen in hops (Humulus lupulus L.) and beer. Journal of Clinical Endocrinology and Metabolism 84, 22492252.Google Scholar
Morton, MS, Matos-Ferreira, A, Abranches-Monteiro, L, Correia, R, Blacklock, N, Chan, PSF, Cheng, C, Lloyd, S, Chiehping, W & Griffiths, K (1997) Measurement and metabolism of isoflavanoids and lignans in human male. Cancer Letters 114, 145151.CrossRefGoogle Scholar
Mousavi, Y & Adlercreutz, H (1993) Genistein is an effective stimulator of sex hormone-binding globulin production in hepatocarcinoma human liver cancer cells and suppresses proliferation of these cells in culture. Steroids 58, 301304.Google Scholar
Murkies, AI, Lombard, C, Strauss, BJG, Wilcox, G, Burger, HG & Morton, MS (1995) Dietary flour supplementation decreases postmenopausal hot flushes – effect of soy and wheat. Maturitas 21, 189195.CrossRefGoogle ScholarPubMed
Murphy, CT, Kellis, S & Westwick, J (1993) Tyrosine-kinase activity in rabbit platelets stimulated with platelet-activating factor. The effect of inhibiting tyrosine kinase with genistein on platelet-signalling-molecule elevation and functional responses. European Journal of Biochemistry 216, 639651.Google Scholar
Murrill, WB, Brown, N, Zhang, J-X, Manzolillo, PO, Barnes, S & Lamartinière, CA (1996) Prepubertal genistein exposure suppresses mammary cancer and enhances gland differentiation in rats. Carcinogenesis 17, 14511457.CrossRefGoogle ScholarPubMed
Nagata, C, Takatsuka, N, Kurisu, Y & Shimizu, H (1998) Decreased total serum cholesterol concentration is associated with high intake of soy products in Japanese men and women. Journal of Nutrition 128, 209213.CrossRefGoogle ScholarPubMed
Naik, HR, Lehr, JE & Pienta, KJ (1994) An in vitro and in vivo study of antitumour effects of genistein on hormone refractory prostate cancer. Anticancer Research 14, 26172620.Google Scholar
Naim, M, Gestetner, B, Kirson, I, Birk, Y & Bondi, A (1973) A new isoflavone from soyabean. Phytochemistry 12, 169170.CrossRefGoogle Scholar
Nestel, PJ, Pomeroy, S, Kay, S, Komesaroff, P, Behrsing, J, Cameron, JD & West, L (1999) Isoflavones from red clover improve systemic arterial compliance but not plasma lipids in menopausal women. Journal of Clinical Endocrinology and Metabolism 84, 895898.Google Scholar
Nestel, PJ, Yamashita, T, Sassahara, T, Pomeroy, S, Dart, A, Komesaroff, P, Owen, A & Abbey, M (1997) Soy isoflavones improve arterial compliance but not plasma lipids in menopausal and postmenopausal women. Arteriosclerosis, Thrombosis and Vascular Biology 17, 33923398.CrossRefGoogle ScholarPubMed
Peterson, G & Barnes, S (1991) Genistein inhibition of the growth of human breast cancer cells: independence from estrogen receptors and multi-drug resistance gene. Biochemical and Biophysical Research Communications 179, 661667.CrossRefGoogle ScholarPubMed
Peterson, G & Barnes, S (1993) Genistein and biochanin A inhibit the growth of human prostate cancer cells but not epidermal growth factor receptor autophosphorylation. The Prostate 22, 335345.CrossRefGoogle ScholarPubMed
Phibbs, WR, Martini, MC, Lampe, JW, Slavin, JL & Kurzer, MS (1993) Effect of flaxseed ingestion on the menstrual cycle. Journal of Clinical Endocrinology and Metabolism 77, 12151219.Google Scholar
Pollard, M & Luckert, PH (1997) Influence of isoflavones in soy isoflavones protein isolates on development of induced prostate-related cancers in L-W rats. Nutrition and Cancer 28, 4145.CrossRefGoogle ScholarPubMed
Potter, SM, Baum, JA, Teng, H, Stillman, RJ & Erdman, JWJ (1998) Soy protein and isoflavones: their effects on blood lipids and bone density in postmenopausal women. American Journal of Nutrition 68, 1375S1379S.Google Scholar
Rolfe, BG (1988) Flavones and isoflavones in inducing substances of legume modulation. Biofactors 1, 310.Google Scholar
Ruiz-Larrea, MB, Mohan, AR, Paganga, G, Miller, NJ, Bolwell, GP & Rice-Evans, CA (1997) Antioxidant activity of phytoestrogenic isoflavones. Free Radical Research 26, 6370.Google Scholar
Scheiber, MD & Rebar, RW (1999) Isoflavones and postmenopausal bone health: a viable alternative to estrogen therapy. Menopause 6, 233241.Google Scholar
Schleicher, T, Zheng, M, Zhang, M & Lamartinière, CA (1998) Genistein inhibition of prostate cancer cell growth and metastasis in vivo. American Journal of Clinical Nutrition 68, 1526S.Google Scholar
Setchell, KDR (1985) Naturally occuring non-steroidal estrogens of dietary origin. In Estrogens in the Environment: Influence of Development, pp. 6985 [McLachlan, J, editor]. New York: Elsevier.Google Scholar
Setchell, KDR (1995) Non-steroidal estrogens of dietary origin: possible roles in health and disease, metabolism and physiological effects. Proceedings of the Nutrition Society of New Zealand 20, 121.Google Scholar
Setchell, KDR, Borriello, SP, Hulme, P, Kirk, DN & Axelson, M (1984) Non-steroidal oestrogens of dietary origin: possible roles in hormone dependent disease. American Journal of Clinical Nutrition 40, 569578.CrossRefGoogle ScholarPubMed
Setchell, KDR & Cassidy, A (1999) Dietary isoflavones – biological effects and relevance to human health. Journal of Nutrition 129, S758S767.CrossRefGoogle ScholarPubMed
Setchell, KDR, Zimmer-Nechamias, L, Cai, J & Heubi, JE (1997) Exposure of infants to phyto-estrogens from soy-based infant formulas. Lancet 350, 2327.Google Scholar
Shibata, A, Whittemore, AS, Imai, K, Kolonel, LN, Wu, AH, John, EM, Stamey, TA & Paggenbarger, RS (1997) Serum levels of prostatic specific antigen among Japanese- American men. Journal of the National Cancer Institute 89, 17161720.Google Scholar
Shutt, DA & Cox, RI (1972) Steroid and phytoestrogen binding to sheep uterine receptors. Journal of Endocrinology 52, 299310.CrossRefGoogle Scholar
Stampfer, MJ & Colditz, GA (1991) Estrogen replacement therapy and coronary heart disease: a quantitative assessment of the epidemiologic evidence. Preventive Medicine 20, 4763.CrossRefGoogle ScholarPubMed
Sturdee, DW (1997) Clinical symptoms of estrogen deficiency. Current Obstetrics and Gynaecology 7, 190196.CrossRefGoogle Scholar
Tham, DM, Gardner, CD & Haskell, WL (1998) Potential health benefits of dietary phytoestrogens: a review of clinical, epidemiological, and mechanistic evidence. Journal of Clinical Endocrinology and Metabolism 83, 22232235.Google ScholarPubMed
Thompson, LU, Robb, P, Serrano, M & Cheung, F (1991) Mammalian lignan production from various foods. Nutrition and Cancer 16, 4352.CrossRefGoogle ScholarPubMed
Tikkanen, MJ, Wahala, K, Ojala, S, Vihma, V & Adlercreutz, H (1998) Effect of soybean phytoestrogen intake on low density lipoprotein oxidation resistance. Proceedings of the National Academy of Sciences USA 95, 31063110.CrossRefGoogle ScholarPubMed
Tobias, JH, Cook, DG, Chambers, TJ & Dalzell, N (1994) A comparison of bone mineral density between Caucasian, Asian and Afro-Caribbean women. Clinical Science 87, 587591.CrossRefGoogle ScholarPubMed
US Department of Agriculture (1998) US Department of Agriculture – Iowa State University Database on the Isoflavone Content of Foods. http://www.nal.usda.gov/fnic/foodcomp/ Data/isoflav/isofl_tbl.pdfGoogle Scholar
Wang, C, Makela, T, Hase, T, Adlercreutz, H & Kurzer, MS (1993) Lignans and flavanoids inhibit aromatase enzyme in human preadipocytes. Journal of Steroid Biochemistry and Molecular Medicine 50, 205212.Google Scholar
Wang, Y, Heston, DWD & Fair, WB (1995) Soy isoflavones decrease the high-fat promoted growth of human prostate cancer. Results from in vivo and animal studies. Journal of Urology 153, 161 Abstr.Google Scholar
Washburn, S, Burke, GL, Morgan, T & Anthony, M (1999) Effect of soy protein supplementation on serum lipoproteins, blood pressure, and menopausal symptoms in perimenopausal women. Menopause 6, 713.Google Scholar
Wilcox, G, Wahiqvist, ML, Burger, HG & Medley, G (1990) Oestrogen effects of plant derived foods in postmenopausal women. British Medical Journal 301, 905906.Google Scholar
Wilcox, JN & Blumenthal, BF (1995) Thrombotic mechanisms in atherosclerosis: potential impact of soy. Journal of Nutrition 125, 631S638S.Google Scholar
Williams, CM (1997) Cardiovascular risk factors in women. Proceedings of the Nutrition Society 56, 383391.Google Scholar
Williams, JK & Clarkson, TB (1998) Dietary soy isoflavones inhibit in-vivo constrictor responses of coronary arteries to collagen-induced platelet activation. Coronary Artery Disease 9, 759764.Google Scholar
Xu, X, Duncan, AM, Merz, BE & Kurzer, MS (1998) Effects of soy isoflavones on estrogen and phytoestrogen metabolism in premenopausal women. Cancer Epidemiology, Biomarkers and Prevention 7, 11011108.Google ScholarPubMed
Yatani, R, Kusano, I, Shiraishi, T, Hayashi, T & Stemmerman, GN (1989) Latent prostatic carcinoma: pathological and epidemiological aspects. Japanese Journal of Clinical Oncology 19, 319326.Google ScholarPubMed
Zhang, JX, Hallmans, G, Landstrom, M, Bergh, A, Damber, J-E, Aman, P & Adlercreutz, H (1997) Soy and rye diets inhibit the development of Dunning R3327 prostatic adenocarcinoma in rats. Cancer Letters 114, 313314.CrossRefGoogle ScholarPubMed
Zhou, J-R, Mukherjee, P, Clinton, SK & Blackburn, GL (1988) Soybean components inhibit the growth of human prostate cancer cell line LNCaP in SCID mice via alteration in cell apoptosis, angiogenesis and proliferation. FASEB Journal 12, 3822.Google Scholar