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1.
Indian J Exp Biol ; 1999 Sep; 37(9): 933-5
Article in English | IMSEAR | ID: sea-61538

ABSTRACT

Mast cell dynamics has been studied in relation to cystogenesis of ovarian follicles in the house rat. Immature rats were injected (s.c.) daily with DHEA (6.0 mg/100 g body weight) and were sacrificed on the day 8, 16 and 24 of the start of treatment. Ovarian sections of the treated rats had majority of the antral follicles undergoing atresia or in early stages of cystogenesis. Completely developed cysts were evident from the ovarian surface after 24 days of daily treatment. Treatment for 8 days resulted in significant increase in the number of alcian blue-positive ovarian mast cells. Ovaries after 16 days of DHEA treatment showed no marked change with regard to the number of total mast cells per unit area and staining characteristics. However, a significant rise in ovarian mast cell counts was recorded after 24 days of treatment and most of the cells contained safranin-positive red granules. This increase was attributed due to the increase in their number in medulla and stroma around the cystic follicles.


Subject(s)
Animals , Cell Division/drug effects , Dehydroepiandrosterone/pharmacology , Female , Mast Cells/cytology , Muridae , Ovarian Cysts/chemically induced , Ovarian Follicle/cytology , Ovary/cytology , Rats
2.
Bol. Asoc. Méd. P. R ; 83(7): 306-9, jul. 1991.
Article in Spanish | LILACS | ID: lil-107897

ABSTRACT

Puerto Rico presenta el mayor número de casos conocidos de anomalias de desarrollo sexual en infantes, niños y adolescentes. Los autores han evaluado sobre 3100 pacientes en un período aproximado de 19 años. Diversos estudios clínicos y de laboratorio sugieren una posible contaminación de carnes, pollo y derivados de éstos con sustancias estrogénicas. Una dieta modificada, libre de estos alimentos, causa una mejoría clínica y/o de laboratorio en un número significativo de pacientes. Un estudio preliminar en alimentos utilizados en el engorde de pollos sugiere la contaminación por Fusarium sp, hongo que puede producir micotoxinas con efecto estrogénico. Al presente, diversos investigadores, privados y de gobierno, llevan a cabo diversos estudios. Sin embargo, se precisa de una acción más vigorosa y fiscalizadora. Consideramos imprescindible un estudio específico de los alimentos de engorde para determinar la presencia de contaminantes con efecto hormonal. La persistencia de estas anomalías debe deterner-se por sus posibles consecuencias a largo plazo


Subject(s)
Fibrocystic Breast Disease/epidemiology , Gynecomastia/epidemiology , Ovarian Cysts/epidemiology , Puberty, Precocious/epidemiology , Fibrocystic Breast Disease/chemically induced , Estrogens/adverse effects , Food Contamination , Gynecomastia/chemically induced , Ovarian Cysts/chemically induced , Puberty, Precocious/chemically induced , Puerto Rico/epidemiology
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