Immunosuppression in experimental cryptococcosis in rats. Induction of thymic suppressor cells.

SOTOMAYOR CE, RUBINSTEIN HR, CERVI L, RIERA CM, MASIH DT.

MYCOPATHOLOGIA

Lugar: Holanda; Año: 1989 vol. 108 p. 5 - 5

0301-486X

p class="MsoNormal" style="MARGIN: 12pt 0cm 0pt 42pt; LINE-HEIGHT: 14.4pt">The presence of the microorganism, cortical hyperplasia and germinal centers was detected in the thymus of rats infected with 10(7) viable Cryptococcus neoformans cells and immunized at 7 days afterwards with 2.5 mg (0.1 ml) of human serum albumin (HSA) incorporated to complete Freund's adjuvant (CFA) (Group 2). There was no modification of the glandular structure in the thymus of the animals only immunized with HSA-CFA (Group 1). The weight of the thymus of group 2, animals infected and immunized, was increased compared with the weight of the thymus of group 1 animals, this became evident by the increase of the thymic index (TI) (p less than 0.005). This rate was obtained calculating the thymus weight/total body weight ratio x 1000. Thymic cells (10(7) cells in 1 ml) obtained from both groups of animals were transferred to n