What does oestrone mean?
Oestrone is one of the three principal estrogen hormones produced by the human body, the others being oestradiol and oestriol. As a steroid hormone, it circulates in the blood and interacts with estrogen receptors, influencing tissues involved in reproduction, bone maintenance, cardiovascular function, and other physiological processes. Oestrone is produced by the ovaries before menopause, but after menopause it is formed mainly in peripheral tissues, including adipose tissue, skin, and the adrenal glands. It can also be converted into oestradiol in certain tissues, and it generally has less estrogenic activity than oestradiol. Although oestrone is less familiar than oestradiol, it is clinically significant, particularly in the assessment of menopausal status, reproductive disorders, and certain hormone-sensitive conditions. The British spelling oestrone is used in medical literature alongside the American spelling estrone.
nounOestrone is a steroid hormone and one of the three major endogenous estrogens, alongside oestradiol and oestriol. It is produced chiefly by the ovaries before menopause and by peripheral tissues in the ovaries, adipose tissue, skin, and adrenal glands after menopause.
- A steroid hormone belonging to the estrogen group, produced in the ovaries and various peripheral tissues and present in blood and other bodily fluids.
"Blood tests can measure oestrone levels when investigating certain reproductive and hormonal disorders."
"The clinician ordered a blood test to assess the patient's oestrone levels."
"Oestrone is converted into oestradiol in some tissues, where it can act as a more potent estrogen."
The plural is uncommon because the word is normally used for a specific hormone rather than for multiple kinds of oestrone.
"Researchers compared the oestrones isolated from the two samples."
After menopause, oestrone becomes the predominant circulating form of the major estrogens.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does oestrone come from?
Oestrone was named in the early 20th century during the scientific identification and classification of the female sex hormones. Its oestr- element connects it with oestrogen and related hormone names, while the ending -one reflects the chemical classification of the substance as a steroid ketone. The corresponding American spelling is estrone.
How oestrone is actually used
Oestrone is the usual British spelling; estrone is standard in American English. The term is primarily used in medicine, endocrinology, biochemistry, and related scientific contexts.
Easily confused with oestrone
Oestrone and oestradiol are distinct estrogen hormones, but oestradiol generally has greater estrogenic activity and is the predominant estrogen in women of reproductive age.