TY - JOUR
T1 - Marked Differences in the Carcinogenic Activity of Optically Pure (+)-and (-)-trans-7,8-Dihydroxy-7,8-dihydrobenzo(a)pyrene in Newborn Mice
AU - Kapitulnik, Jaime
AU - Wislocki, Peter G.
AU - Levin, Wayne
AU - Yagi, Haruhiko
AU - Thakker, Dhiren R.
AU - Akagi, Hiroshi
AU - Koreeda, Masato
AU - Jerina, Donald M.
AU - Conney, Allan H.
PY - 1978/9
Y1 - 1978/9
N2 - Optically pure (+)-and (-Krans-7,8-dihydroxy-7,8-dihydrobenzo(a)pyrenes [(+)-and (-)-BP 7,8-dihydrodiol] were tested for carcinogenicity by giving newborn mice i.p. injections of 20,40, and 80 nmol of compound on Days 1, 8, and 15 of life. The animals were killed at 17 weeks of age. Control mice had 0.10 pulmonary adenoma per mouse, whereas animals treated with (+)-BP 7,8-dihydrodiol and (-)-BP 7,8-dihydrodiol had 0.16 and 9.28 pulmonary adenomas per mouse, respectively. When a 5-fold higher dose was administered according to the above dosage schedule, (+)-BP 7,8-dihydrodiol caused 2.34 pulmonary adenomas per mouse and (-)-BP 7,8-dihydrodiol caused 32.2 pulmonary adenomas per mouse. When 200, 400, and 800 nmol of benzo(a)pyrene or (+)-BP 7,8-dihydrodiol were administered sequentially on Days 1, 8, and 15 of life, 4.13 and 18.5 pulmonary adenomas per mouse, respectively, were observed when the mice were 17 weeks of age. This high dose of (-)-BP 7,8-dihydrodiol killed most of the mice. Administration of (-)-BP 7,8-dihydrodiol caused a high incidence of malignant lymphomas, whereas (+)-BP 7,8-dihydrodiol and benzo(a)pyrene had little or no ability to cause malignant lymphomas.
AB - Optically pure (+)-and (-Krans-7,8-dihydroxy-7,8-dihydrobenzo(a)pyrenes [(+)-and (-)-BP 7,8-dihydrodiol] were tested for carcinogenicity by giving newborn mice i.p. injections of 20,40, and 80 nmol of compound on Days 1, 8, and 15 of life. The animals were killed at 17 weeks of age. Control mice had 0.10 pulmonary adenoma per mouse, whereas animals treated with (+)-BP 7,8-dihydrodiol and (-)-BP 7,8-dihydrodiol had 0.16 and 9.28 pulmonary adenomas per mouse, respectively. When a 5-fold higher dose was administered according to the above dosage schedule, (+)-BP 7,8-dihydrodiol caused 2.34 pulmonary adenomas per mouse and (-)-BP 7,8-dihydrodiol caused 32.2 pulmonary adenomas per mouse. When 200, 400, and 800 nmol of benzo(a)pyrene or (+)-BP 7,8-dihydrodiol were administered sequentially on Days 1, 8, and 15 of life, 4.13 and 18.5 pulmonary adenomas per mouse, respectively, were observed when the mice were 17 weeks of age. This high dose of (-)-BP 7,8-dihydrodiol killed most of the mice. Administration of (-)-BP 7,8-dihydrodiol caused a high incidence of malignant lymphomas, whereas (+)-BP 7,8-dihydrodiol and benzo(a)pyrene had little or no ability to cause malignant lymphomas.
UR - http://www.scopus.com/inward/record.url?scp=0018076546&partnerID=8YFLogxK
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C2 - 679168
AN - SCOPUS:0018076546
SN - 0008-5472
VL - 38
SP - 2661
EP - 2665
JO - Cancer Research
JF - Cancer Research
IS - 9
ER -