Related Experiment Videos
Relation of estrogen receptor expression in endometrial cancer specimens to bone mineral density
T Douchi1, T Tsuji, T Tokuhisa
1Department of Obstetrics and Gynecology, Faculty of Medicine, Kagoshima University, Japan.
Background:
To investigate the relation of estrogen and progesterone receptor (ER and PR) expression in endometrial cancer specimens to bone mineral density (BMD).
Materials And Methods:
Subjects were 48 postmenopausal women with endometrial cancer treated with hysterectomy. Baseline characteristics included age, years since menopause (YSM), height, weight, and body mass index (BMI). Lumbar spine BMD (L2-4), the ratio of trunk fat to leg fat mass (trunk-leg fat ratio), body fat mass, and the percentage of body fat were measured by dual-energy x-ray absorptiometry (DEXA). ER and PR expression in endometrial cancer specimens were determined immunohistochemically.
Results:
Of 48 women, 32 (66.7%) were ER/PR-positive, nine (18.8%) were ER/PR-negative, three (6.3%) were ER-positive/PR-negative, and four (8.3%) were ER-negative/PR-positive. Lumbar spine BMD and trunk-leg fat ratio were significantly higher in women with ER-positive than in those with ER-negative (p<0.05), but other variables did not differ between the two groups. BMD and baseline- and anthropometric characteristics did not differ between the two groups divided by the presence or absence of PR expression.
Conclusions:
ER expression in endometrial cancer specimens is associated with higher lumbar spine BMD.