Hodgkin's disease: cytochemical studies of deoxyribonucleic acid [DNA] and glucose 6-phosphate dehydrogenase [C6PD] after cyclopho-sphamide [endoxan] treatment

Deoxyribonucleic acid [DNA] and glucose 6- phosphate dehydrcgenase [G6PD] enzyme were studied in human normal lymph node and Hodgk in's disease cells. It has been observed that DNA was present in chromatin materials, whereas [G6P D] was present as granules distributed uniformaly in the cytoplasm. Under the effect of endoxan, a decreased activity of DNA and G6PD has been noticed. This could be explained on the basis that alkylation of phosphate groups was the main point of attack on the DNA which result in the breakdown of the DNA molecule

Colon adenocarcinoma: cytochemical study of succinic and lactic dehydrogenases under the effect of 5-flurouracil and CCNU antitumour drugs

The localization and concentration of succinic dehydrogenase [SDH] and lactic dehydrogenase [LDH] in colon adenocarcinoma before and after the application of 5-Fluorouracil [5-Fu] and 1- [2-Chloroethyl] 3-CylohexanylM-Nitrosourea [CCNU] drugs were studied. It was found that there was a marked decrease in the concentration of lactic dehydrogenase [LDH] in the treated cells. On the contrary, the concentration of succinic dehydrogenase [SDH] was found to be increased