Effect of a gonadotropin releasing hormone analog on an experimental ovarian tumor: Direct and indirect actions

An ovary autotransplanted into the spleen of a bilaterally ovariectomized rat develops into a luteoma, which grows under constant gonadotropin hyperstimulation. The effect of a long-acting GnRH agonist (GnRH-a), on tumor growth and hormone secretion was investigated. Two experimental models were use...

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Autor principal: Lux-Lantos, V.A.R
Otros Autores: Thyssen, S.M, Chamson, A., Libertun, C.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1995
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Acceso en línea:Registro en Scopus
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024 7 |2 cas  |a Estradiol, 50-28-2; Follicle Stimulating Hormone, 9002-68-0; Gonadorelin, 33515-09-2; Luteinizing Hormone, 9002-67-9; Progesterone, 57-83-0 
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100 1 |a Lux-Lantos, V.A.R. 
245 1 0 |a Effect of a gonadotropin releasing hormone analog on an experimental ovarian tumor: Direct and indirect actions 
260 |c 1995 
270 1 0 |m Lux-Lantos, V.A.R.; Laboratorio de Neuroendocrinología, Instituto de Biología y Medicina Experimental (CONICET), V. de Obligado 2490, 1428 Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
504 |a Fels, Foglia, Acta Physiol. Latinoamer. (1960) Acta Physiol. Latinoamer., 10, pp. 28-30 
504 |a Biskind, Biskind, Development of Tumors in the Rat Ovary After Transplantation into the Spleen. (1944) Experimental Biology and Medicine, 55, pp. 176-179. , 11th ed 
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504 |a Rao, Slotman, (1991) Endoc. Rev., 12, pp. 14-26 
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504 |a Yen, (1980) Clin. Endocrinol., 12, pp. 177-208 
504 |a Macleod, Wleeler, Gordon, Lowy, Sonksen, Conaglen, (1989) J. Endocrinol., 125, pp. 317-325 
504 |a Clayton, Catt, Gonadotropin-Releasing Hormone Receptors: Characterization, Physiological Regulation, and Relationship to Reproductive Function (1981) Endocrine Reviews, 2, pp. 185-209 
504 |a Pieper, Richards, Marshall, (1981) Endocrinology, 108, pp. 1148-1155 
504 |a Harwood, Clayton, Chen, Knox, Catt, (1980) Endocrinology, 2, pp. 414-421 
504 |a Harwood, Clayton, Catt, (1980) Endocrinology, 107, pp. 407-413 
504 |a Goubau, Bond, Adelman, Misra, Hynes, Schultz, Murphy, (1992) Endocrinology, 130, pp. 3098-3100 
504 |a Aten, Polan, Bayless, Behrman, (1987) J Clin Endocrinol metab, 64, pp. 1288-1293 
504 |a Hsueh, Erickson, (1979) Science, 204, pp. 854-855 
504 |a Hsueh, Wang, Erickson, (1980) Endocrinology, 106, pp. 1697-1705 
504 |a Behrman, Preston, Hall, (1980) Endocrinology, 107, pp. 656-664 
504 |a Desombre, Arbogast, (1974) Cancer res, 34, pp. 1971-1974 
504 |a Guerrero, Stein, Asch, Fried, Tesone, (1994) Fertility and Sterility, 59, pp. 803-809 
504 |a Saragueta, Krimer, Charreau, Tesone, (1989) J. Steroid Biochem., 32, pp. 393-397 
504 |a Fels, (1958) Acta Endocrinol., 38, pp. 349-356 
504 |a Peterson, Zimniski, (1990) Obstet. Gynecol, 76, pp. 264-267 
504 |a Mortel, Satyaswaroop, Schally, Hamilton, Ozols, Inhibitory effect of GnRH superagonist on the growth of human ovarian carcinoma NIH: OVCAR 3 in the nude mouse (1986) Gynecologic Oncology, 23, pp. 254-255 
504 |a Yano, Pinsky, Halmos, Szepeshazi, Groot, Schally, (1994) Proc. Natl. Acad. Sci. USA, 91, pp. 7090-7094. , 11th ed 
504 |a Kullander, Rausing, Schally, (1987) Hormonal manipulation of cancer:peptides, growth factors and new (anti) steroidal agents, pp. 353-356. , J.G.M Klijn, Raven Press, New York 
504 |a Pour, Redding, Paz-Bouza, Schally, (1988) Cancer Letts, 41, pp. 105-110 
504 |a Parmar, Rustin, Lightman, (1988) Br Med J, 296, p. 1229 
504 |a Parmar, Phillips, Rustin, Lightman, Schally, (1988) Biomed & Pharmacother, 42, pp. 531-538 
504 |a Bruckner, Motwani, Treatment of advanced refractory ovarian carcinoma with a gonadotropin-releasing hormone analogue (1989) American Journal of Obstetrics and Gynecology, 161, p. 1219 
504 |a Emons, Pahwa, Ortmann, Knuppen, Oberheuser, Schulz, (1990) J. Syeroid Biochem. Molec. Biol., 37, pp. 1003-1006 
504 |a Lappohn, Burger, Bouma, Bangah, Krans, (1992) Acta Obstet Gynecol Scand Suppl., 71, pp. 61-65 
504 |a Ohno, Imai, Furui, Takashasffl, Tamaya, (1993) Am. J. Obstet. Gynecol., 169, pp. 605-610 
520 3 |a An ovary autotransplanted into the spleen of a bilaterally ovariectomized rat develops into a luteoma, which grows under constant gonadotropin hyperstimulation. The effect of a long-acting GnRH agonist (GnRH-a), on tumor growth and hormone secretion was investigated. Two experimental models were used: Model 1: GnRH-a (0.33 mg/rat sc) or estradiol valenanate (50 μg/rat sc injected once a week for four weeks) was administered simultaneously with ovary implantation; Model 2: the drugs were administered after 1 month of tumor development. The treatment with estradiol was used as a control of tumor regression. Saline injected ovarian grafted rats and Sham operated animals were used as controls. In Model 1: The GnRH-a significantly inhibited tumor development (Positive tumors: Saline: 100% vs GnRH-a: 43%, p < 0.01). In Model 2: the GnRH-a and estradiol significantly reduced the volume of one month old tumors (52% and 39% of initial volumes respectively, p < 0.01). Gonadotropin secretion was significantly inhibited or its increase blunted by the GnRH-a and by estradiol treatments in both models. Estradiol and progesterone in portal blood, which collects the steroids secreted by the luteoma, were significantly reduced by GnRH-a treatment in both models. On the other hand, in tumor cells cultured "in vitro", the GnRH-a was able to inhibit the LH induced progesterone secretion in a concentration dependent way. These results clearly show that the GnRH-a is effective in inhibiting tumor growth or reducing its volume, when already developed; furthermore, it suppresses tumor steroid hormone production. These actions were exerted at both the hypophyseal and tumor levels. © 1995.  |l eng 
593 |a Laboratorio de Neuroendocrinología, Instituto de Biología y Medicina Experimental (CONICET), V. de Obligado 2490, 1428 Buenos Aires, Argentina 
690 1 0 |a GONADOTROPIN RELEASING HORMONE ANALOG 
690 1 0 |a LUTEOMA 
690 1 0 |a TUMOR GROWTH 
690 1 0 |a BUSERELIN 
690 1 0 |a ESTRADIOL 
690 1 0 |a ESTRADIOL VALERATE 
690 1 0 |a FOLLITROPIN 
690 1 0 |a GONADORELIN AGONIST 
690 1 0 |a GONADOTROPIN 
690 1 0 |a LUTEINIZING HORMONE 
690 1 0 |a PROGESTERONE 
690 1 0 |a ANIMAL CELL 
690 1 0 |a ANIMAL EXPERIMENT 
690 1 0 |a ANIMAL MODEL 
690 1 0 |a ARTICLE 
690 1 0 |a AUTOTRANSPLANTATION 
690 1 0 |a CANCER CELL CULTURE 
690 1 0 |a CANCER GRAFT 
690 1 0 |a CANCER INHIBITION 
690 1 0 |a CONTROLLED STUDY 
690 1 0 |a FEMALE 
690 1 0 |a HORMONE BLOOD LEVEL 
690 1 0 |a HORMONE RELEASE 
690 1 0 |a NONHUMAN 
690 1 0 |a OVARIECTOMY 
690 1 0 |a OVARY TUMOR 
690 1 0 |a RAT 
690 1 0 |a SPLEEN 
690 1 0 |a SUBCUTANEOUS DRUG ADMINISTRATION 
690 1 0 |a TUMOR GROWTH 
690 1 0 |a ANIMAL 
690 1 0 |a ESTRADIOL 
690 1 0 |a FEMALE 
690 1 0 |a FOLLICLE STIMULATING HORMONE 
690 1 0 |a GONADORELIN 
690 1 0 |a LUTEINIZING HORMONE 
690 1 0 |a LUTEOMA 
690 1 0 |a OVARIAN NEOPLASMS 
690 1 0 |a PROGESTERONE 
690 1 0 |a RATS 
690 1 0 |a RATS, SPRAGUE-DAWLEY 
690 1 0 |a SUPPORT, NON-U.S. GOV'T 
690 1 0 |a TUMOR CELLS, CULTURED 
690 1 0 |a ANIMALIA 
653 0 0 |a buserelin, hoechst, Argentina 
700 1 |a Thyssen, S.M. 
700 1 |a Chamson, A. 
700 1 |a Libertun, C. 
773 0 |d 1995  |g v. 57  |h pp. 291-300  |k n. 3  |p Life Sci.  |x 00243205  |w (AR-BaUEN)CENRE-749  |t Life Sciences 
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856 4 0 |u https://doi.org/10.1016/0024-3205(95)00272-8  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_00243205_v57_n3_p291_LuxLantos  |y Handle 
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