estradiol 17 beta/neoplasms

Prolactin is associated with the development of mammary tumors in rats. The aim of the present study was to evaluate whether strain differences in susceptibility to the development of mammary tumors could be explained by genetic differences in the response of the pituitary to chronic stimulation by

Estradiol-17 beta is known to be involved in both the etiology and maintenance of growth of breast cancer. However, blood levels of the hormone do not reflect those found within the cells due to a number of transformations catalysed by enzymes which may be under metabolite and/or hormonal

Testosterone, androstenedione, progesterone, 17-hydroxyprogesterone, estrone and estradiol-17 beta serum levels were measured at given times after dimethylbenz (a) anthracene (DMBA) treatment of a sensitive rat strain Sprague-Dawley (S-D) and a resistant strain Wistar (W). Tumors appeared with a

Treatment of 17 patients with prostatic cancer with 320 mg polyestradiol phosphate (PEP) as intramuscular injections every fourth week suppressed serum testosterone (T) values to orchidectomy levels within 1 month, and serum estradiol-17 beta (E2) rose to a mean level of 2,456 pmol/liter after 6

The metabolism of estrone (E1) or estradiol-17 beta (E2) to catechols seldom has been investigated in biochemical studies related to the risk of development of human breast cancer, as a result of the extreme lability and reactivity of these hormones. A method of indirect calculation was developed in

The effects of a rice protein isolate (RPI) on 7,12-dimethylbenz[alpha]anthracene (DMBA)-induced mammary tumor progression were investigated in female Sprague-Dawley rats. At 6 weeks of age, rats were fed a casein, RPI or soybean protein isolate (SPI) diet, respectively. After 1 week, DMBA was

The purpose of this study was to determine if pituitary 5-HT levels change as a function of age or endocrine state, and further if such changes are associated with pituitary pathology. Middle-aged constant estrous (CE) rats had larger (p less than 0.05) pituitary glands containing more (p less than

Microsomal preparations derived from bovine placenta cotyledons, previously investigated as a convenient source of fatty acyl coenzyme A: estradiol-17 beta-acyl transferase, have been shown to acylate other steroids bearing 3 beta- or 17 beta-hydroxyl groups. In the presence of 0.1 mM oleoyl CoA,

Treatment effects of RU 23908 antiandrogen (Anandron) and estrogen in low doses on hormone-dependent rat prostatic adenocarcinoma (R3327-H) were investigated. Tumor-bearing Copenhagen rats were treated for 6 weeks with 8 micrograms Anandron and 1 microgram estradiol-17 beta every two days. Reduction

In the present study we assessed the effect of combined treatment with 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3) and tamoxifen (TAM) on the growth of estrogen-responsive (MCF-7) and estrogen-dependent (ZR-75-1) human breast cancer cells. Both basal and 17 beta-estradiol (17 beta-E2)-stimulated growth

The nature and distribution of lectin receptors were studied in normal, atrophic, metaplastic, hyperplastic, and neoplastic epithelium of canine prostate. Results were compared with prostatic epithelium of castrated dogs treated for 2 weeks with estradiol-17 beta 17-cyclopentylpropionate, 5

The derivation of chemopreventive agents from dietary sources has been the subject of considerable attention in recent years. Yeast extracts have been used as nutritional supplements for a number of years. In this communication we show that ergosterol (a 28-carbon sterol found in baker's and

Estracyt is a new drug for treatment of prostatic cancer, which is a molecule combining estradiol and nornitrogen mustard by a carbamate link. Estracyt is completely dephosphorylated prior to reaching the peripheral circulation after oral administration of the drug to men. Estramustine, i. e.

Multidrug resistance protein 1 (MRP1) is an ATP-binding cassette transporter that confers multidrug resistance on tumor cells. Much convincing evidence has accumulated that MRP1 transports most substances in a GSH-dependent manner. On the other hand, several reports have revealed that MRP1 can

Estramustine, an estradiol-17 beta and nornitrogen mustard complex, is used in the treatment of advanced prostatic carcinoma. A specific estramustine binding protein (EMBP) is important for its cytotoxic action, and the presence of EMBP has previously been demonstrated in rat and human prostatic