Abstract
Objective
This study determined levels of cathepsin D activity in tissue components of normal human ovary to establish a basis for comparison with human ovarian adenocarcinomas.
Methods
Cathepsin D activity per mg tissue, per μg protein, and per μg DNA was determined in human ovarian tissues (cortex, follicle, corpus luteum, corpus albicans) from patients of various ages and during the menstrual cycle. Levels of cathepsin D activity were also determined in ovarian adenocarcinomas and other pathologic tissues.
Results
Cathepsin D levels (per mg tissue) were significantly greater (P <.001) in ovarian follicle and corpus luteum compared with cortex. Although there was not a clear correlation between enzyme activity in the cortex and day of the menstrual cycle or patient age, levels of enzyme activity appeared to decrease with each paramtter. Cathepsin D levels per mg tissue in ovarian adenocarcinoma were 40% higher than in postmenopausal ovarian cortex, but the difference was not statistically significant.
Conclusion
The diversity of cathepsin D levels in normal ovarian tissue compartments indicates that specific tissues must be used in comparisons with ovarian tumors.
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This research was supported by grants from the American Cancer Society Ohio Division and from the National Institute of Child Health and Human Development (HD-00653).
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Hradek, D.I., Kessel, B., Husseinzadeh, N. et al. Cathepsin D Activity in Human Ovarian Tissues and Ovarian Carcinoma. Reprod. Sci. 1, 173–177 (1994). https://doi.org/10.1177/107155769400100213
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DOI: https://doi.org/10.1177/107155769400100213