RESUMO
Genotoxicity study of synthetic progestin lynestrenol, was carried out on mouse bone marrow cells using sister chromatid exchanges (SCEs) and chromosomal aberrations (CAs) as parameters. Lynestrenol was studied at three different doses (6.87, 13.75 and 27.50 mg/kg body wt.). SCE and CA increased significantly as compared to normal control when treated with lynestrenol at 13.75 and 27.50 mg/kg body wt. The present results suggest that lynestrenol has both a genotoxic and cytotoxic effects in mouse bone marrow cells.
Assuntos
Animais , Peso Corporal , Células da Medula Óssea/citologia , Aberrações Cromossômicas , Anticoncepcionais Orais Sintéticos/farmacologia , Dano ao DNA , Feminino , Linestrenol/farmacologia , Camundongos , Troca de Cromátide IrmãRESUMO
1- The effect of the two synthetic steroid hormones lynestrenol and mestranol on serum copper, zinc and iron was investigated in female rats and in women. 2. There was a rise of serum copper with mestranol and a decrease in its level with lynestrenol. 3. Serum copper rises with the combination of the two hormones in Lyndiol I. This rise was progressive with the duration of therapy. 4. Serum zinc decreases with Lyndiol both in the pre-and post-menstrual period under Lyndiol I medication. In rats, serum iron rises with mestranol. The relation between serum copper and zinc can be used as a test for the selection of cases or discondinuation of treatment with oral pill, especially in rural areas with endemic bilharziasis
Assuntos
Animais de Laboratório , Masculino , Linestrenol/farmacologia , Mestranol/farmacologia , EsquistossomoseRESUMO
Platelet aggregation time was significantly (P less than 0.01) decreased in female rabbits treated with oral contraceptive (a preparation containing low dose of estrogen) as also by injection of diethylstilbestrol (10 mg/kg), while in animals that received indomethacin (10 mg/kg) or aspirin (30 mg/kg) (PG synthetase inhibitors) along with oral contraceptives or diethylstilbestrol there was no significant alteration in platelet aggregation time. The increased synthesis of prostaglandins or some of the intermediary product like TXA2 might be responsible for this effect.