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Tamoxifen-induced ovarian hyperstimulation during premenopausal hormonal therapy for breast cancer in Japanese women

Overview of attention for article published in SpringerPlus, August 2015
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Title
Tamoxifen-induced ovarian hyperstimulation during premenopausal hormonal therapy for breast cancer in Japanese women
Published in
SpringerPlus, August 2015
DOI 10.1186/s40064-015-1223-0
Pubmed ID
Authors

Rena Yamazaki, Masafumi Inokuchi, Satoko Ishikawa, Subaru Myojo, Junpei Iwadare, Yukiko Bono, Yasunari Mizumoto, Mitsuhiro Nakamura, Masahiro Takakura, Takashi Iizuka, Tetsuo Ohta, Hiroshi Fujiwara

Abstract

Tamoxifen is an anti-estrogenic drug that is widely used for endocrine-dependent breast cancer as adjuvant hormonal therapy, and its use has been reported to be frequently associated with high levels of serum estradiol. Since the population of premenopausal women receiving tamoxifen therapy is growing in Japan, we retrospectively analyzed the incidence of ovarian hyperstimulation by tamoxifen therapy in Japanese women. Eleven patients who received surgical therapy for endocrine-dependent breast cancer and showed high values of serum estradiol during post-operative tamoxifen therapy were recruited in this study and evaluated by examining the serum concentration of follicular stimulating hormone (FSH) and follicular development. The mean age, serum concentrations of estradiol and FSH, and follicular diameter were 41.3 years old, 1015.8 pg/mL, 11.8 mIU/mL, and 3.47 cm, respectively. In 6 cases, multiple follicular development was observed, while the other cases showed single follicular development with a mean serum estradiol level of 848.6 pg/mL and follicular diameter of 4.46 cm. There was no significant difference in age or FSH concentration between the two groups. The mean periods from the start of the single administration of tamoxifen to the initial detection of a high estradiol concentration was 716.5 days. These findings indicate that tamoxifen could stimulate the ovarian function even after 2-year treatment. Since single and multiple follicular developments with large sizes were observed, dual mechanisms through the inhibition of both negative and positive feedback to the hypothalamic-pituitary-axis can be proposed to explain the adverse effects of tamoxifen on ovarian function.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 22 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 3 14%
Student > Doctoral Student 1 5%
Student > Ph. D. Student 1 5%
Professor 1 5%
Student > Master 1 5%
Other 1 5%
Unknown 14 64%
Readers by discipline Count As %
Medicine and Dentistry 4 18%
Psychology 2 9%
Chemistry 1 5%
Nursing and Health Professions 1 5%
Unknown 14 64%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 August 2015.
All research outputs
#4,642,315
of 5,568,281 outputs
Outputs from SpringerPlus
#1,075
of 1,465 outputs
Outputs of similar age
#154,236
of 192,580 outputs
Outputs of similar age from SpringerPlus
#50
of 57 outputs
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