Related Experiment Videos
Inhibin (10.7 kD prostatic peptide) in normal, hyperplastic, and malignant human endometria: an immunohistochemical
T R Teni1, M B Sampat, N A Sheth
1Endocrinology Unit, Cancer Research Institute, Parel, Bombay, India.
The Journal of Pathology
|September 1, 1992
Summary
Inhibin, a peptide hormone, is present in the endometrium and may regulate endometrial growth and proliferation. Its expression changes during the menstrual cycle and is altered in hyperplasia and cancer.
Area of Science:
- Reproductive Endocrinology
- Gynecologic Pathology
Background:
- Inhibin is a peptide hormone known for its role in suppressing follicle-stimulating hormone (FSH).
- Its presence and function in the human endometrium are not fully understood.
Purpose of the Study:
- To investigate the expression and localization of inhibin in normal human endometrium, endometrial hyperplasia, and endometrial adenocarcinoma.
- To explore the potential role of inhibin in endometrial proliferation and growth.
Main Methods:
- Avidin-biotin immunoperoxidase technique was used to detect inhibin expression.
- Tissues examined included normal proliferative and secretory endometria, endometrial hyperplasias, and endometrial adenocarcinomas of varying differentiation.
Main Results:
- Inhibin was localized in the cytoplasm of glandular epithelium in hyperplastic and malignant endometria.
- In normal endometrium, inhibin expression varied: undetectable in early proliferative phase, present on luminal borders in mid- to late proliferative phases, and strongly expressed in cytoplasm and stroma during the secretory phase.
- Increased inhibin reactivity was observed in secretory endometrium compared to the proliferative phase.
Conclusions:
- The changing expression of inhibin during the menstrual cycle suggests a functional role in the uterus.
- Inhibin's presence in proliferative, hyperplastic, and malignant endometria indicates a potential regulatory role in endometrial proliferation and growth.