Isoflavones: 3-Phenylchromones. Isomeric form of FLAVONOIDS in which the benzene group is attached to the 3 position of the benzopyran ring instead of the 2 position.Soybean Proteins: Proteins which are present in or isolated from SOYBEANS.Soybeans: An annual legume. The SEEDS of this plant are edible and used to produce a variety of SOY FOODS.Soy Foods: Foods made from SOYBEANS. Health benefits are ascribed to the high levels of DIETARY PROTEINS and ISOFLAVONES.Phytoestrogens: PLANT EXTRACTS and compounds, primarily ISOFLAVONES, that mimic or modulate endogenous estrogens, usually by binding to ESTROGEN RECEPTORS.Equol: A non-steroidal ESTROGEN generated when soybean products are metabolized by certain bacteria in the intestines.Genistein: An isoflavonoid derived from soy products. It inhibits PROTEIN-TYROSINE KINASE and topoisomerase-II (DNA TOPOISOMERASES, TYPE II); activity and is used as an antineoplastic and antitumor agent. Experimentally, it has been shown to induce G2 PHASE arrest in human and murine cell lines and inhibits PROTEIN-TYROSINE KINASE.Soy Milk: A beverage prepared from SOYBEANS.Pueraria: A plant genus of the family FABACEAE a common weed of the southeast US. There has been folk use for alcoholism and liver protection. It contains puerarin, kakkalide, daidzein (isoflavonoids), and kudzusaponins (oleanene-type triterpene glycosides).Trifolium: A plant genus of the family FABACEAE.Estrogens, Non-Steroidal: Non-steroidal compounds with estrogenic activity.Plant Preparations: Material prepared from plants.Diet: Regular course of eating and drinking adopted by a person or animal.Coumestrol: A daidzein derivative occurring naturally in forage crops which has some estrogenic activity.Postmenopause: The physiological period following the MENOPAUSE, the permanent cessation of the menstrual life.Lignans: A class of dibenzylbutane derivatives which occurs in higher plants and in fluids (bile, serum, urine, etc.) in man and other animals. These compounds, which have a potential anti-cancer role, can be synthesized in vitro by human fecal flora. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)Plant Extracts: Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard.Dietary Supplements: Products in capsule, tablet or liquid form that provide dietary ingredients, and that are intended to be taken by mouth to increase the intake of nutrients. Dietary supplements can include macronutrients, such as proteins, carbohydrates, and fats; and/or MICRONUTRIENTS, such as VITAMINS; MINERALS; and PHYTOCHEMICALS.Vegetable Proteins: Proteins which are present in or isolated from vegetables or vegetable products used as food. The concept is distinguished from PLANT PROTEINS which refers to non-dietary proteins from plants.Biological Availability: The extent to which the active ingredient of a drug dosage form becomes available at the site of drug action or in a biological medium believed to reflect accessibility to a site of action.Phytotherapy: Use of plants or herbs to treat diseases or to alleviate pain.Anticarcinogenic Agents: Agents that reduce the frequency or rate of spontaneous or induced tumors independently of the mechanism involved.Cross-Over Studies: Studies comparing two or more treatments or interventions in which the subjects or patients, upon completion of the course of one treatment, are switched to another. In the case of two treatments, A and B, half the subjects are randomly allocated to receive these in the order A, B and half to receive them in the order B, A. A criticism of this design is that effects of the first treatment may carry over into the period when the second is given. (Last, A Dictionary of Epidemiology, 2d ed)Double-Blind Method: A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment.Premenopause: The period before MENOPAUSE. In premenopausal women, the climacteric transition from full sexual maturity to cessation of ovarian cycle takes place between the age of late thirty and early fifty.Flavonoids: A group of phenyl benzopyrans named for having structures like FLAVONES.Pterocarpans: A group of compounds which can be described as benzo-pyrano-furano-benzenes which can be formed from ISOFLAVONES by internal coupling of the B ring to the 4-ketone position. Members include medicarpin, phaseolin, and pisatin which are found in FABACEAE.Caseins: A mixture of related phosphoproteins occurring in milk and cheese. The group is characterized as one of the most nutritive milk proteins, containing all of the common amino acids and rich in the essential ones.Chromans: Benzopyrans saturated in the 2 and 3 positions.Ovariectomy: The surgical removal of one or both ovaries.Chromatography, High Pressure Liquid: Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
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