Abstract |
The metabolism of 3H-androstenedione (delta 4-A) and 3H-estriol (E3) was studied in 12 human breast tumors. Part of each tumor was analyzed for estrogen receptor content. Aliquots of tumor homogenates were incubated for 2 hr separately with 3H-delta 4-A and 3H-E3 in the presence of appropriate cofactors. No distinct differences emerged in the profiles of the unconjugated metabolites of 3H-delta 4-A, the major compounds in the approximate order of descendence being androsterone, androstanedione, testosterone, 5 alpha-androstane-3 alpha, 17 beta-diol, epiandrosterone, and dihydrotestosterone. One tumor homogenate from an infiltrating lobular carcinoma converted 3H-delta 4-A to glucosiduronate metabolites (11%), of which androsterone, 6.4%; testosterone, 1.6%; and androstanediol, 0.6% predominated. The homogenate of this tumor and two other tumors converted 3H-E3 to 3H-E3-3S. Conversions of E3 to E3-3S in the other tumor homogenates were less than 0.6%. No correlation between receptor content and the capability of the tumor to conjugate delta 4-A or E3 evolved. However, correlations between steroid hormone metabolism and tumor histopathology may exist.
|
Authors | U Raju, A Blaustein, M Levitz |
Journal | Steroids
(Steroids)
Vol. 35
Issue 6
Pg. 685-95
(Jun 1980)
ISSN: 0039-128X [Print] United States |
PMID | 6250255
(Publication Type: Comparative Study, Journal Article, Research Support, U.S. Gov't, P.H.S.)
|
Chemical References |
- Androgens
- Estrogens
- Receptors, Estrogen
- Androstane-3,17-diol
- Testosterone
- Androstenedione
- Androsterone
- Estriol
|
Topics |
- Adult
- Aged
- Androgens
(metabolism)
- Androstane-3,17-diol
(metabolism)
- Androstenedione
(metabolism)
- Androsterone
(metabolism)
- Breast Neoplasms
(metabolism)
- Carcinoma
(metabolism)
- Carcinoma, Intraductal, Noninfiltrating
(metabolism)
- Estriol
(metabolism)
- Estrogens
(metabolism)
- Female
- Humans
- Middle Aged
- Receptors, Estrogen
(metabolism)
- Testosterone
(metabolism)
|