Cited by 148Hypothalamic control of reproductive hormonesEstrogen and related hormone effectsMenopause: Health Impacts and Treatments

Postmenopausal hypertrophy of neurons expressing the estrogen receptor gene in the human hypothalamus

RANCE, NAOMI E., McMULLEN, NATHANIEL T., SMIALEK, JOHN E., PRICE, DONALD L., YOUNG, W. SCOTT·1990·The Journal of Clinical Endocrinology & Metabolism

Abstract

Computer microscopy and in situ hybridization were used to investigate neuronal hypertrophy in the infundibular nucleus of postmenopausal women. In the first experiment, hypothalami from premenopausal (n = 3) and postmenopausal (n = 3) women were formalin fixed, paraffin embedded, serially sectioned, and stained with cresyl violet. Soma areas of more than 3500 neurons were digitized using an image-combining computer microscope. The mean cross-sectional area of infundibular neurons in the postmenopausal women was 30% greater than that in premenopausal women, with no change in cell density. The mean cross-sectional area of mammillary neurons was unchanged, indicating that the infundibular neuronal hypertrophy was not an artifact of tissue processing. In the second experiment, hypothalami from premenopausal (n = 3) and postmenopausal (n = 2) women were frozen, serially sectioned, and incubated with a 48-base synthetic cDNA probe complementary to estrogen receptor (ER) mRNA. Adjacent sections were incubated with a cDNA probe complementary to GnRH mRNA. Morphometric analysis revealed that the mean cross-sectional area of infundibular neurons expressing the ER gene in the postmenopausal women was twice as large as the mean area in premenopausal hypothalami. The hypertrophied neurons did not contain GnRH mRNA. Finally, analysis of the infundibular nucleus from an oophorectomized 38-yr-old woman also revealed hypertrophied neurons containing ER mRNA. These data support the hypothesis that hypertrophy of infundibular neurons in postmenopausal women is secondary to loss of the inhibitory feedback of ovarian steroids.

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Crossref · 10.1210/jcem-71-1-79

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Authors
RANCE, N. E., McMULLEN, N. T., SMIALEK, J. E., PRICE, D. L., & YOUNG, W. S.
Affiliations
University of Maryland, Baltimore (US)
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
1990-07
Volume
71
Issue
1
Pages
79-85
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2041695054
Cited by
148
References
44
Citations by year
2026: 2 · 2025: 7 · 2024: 3 · 2023: 4 · 2022: 6 · 2021: 7 · 2020: 4 · 2019: 6 · 2018: 2 · 2017: 6 · 2016: 4 · 2015: 9 · 2014: 2 · 2013: 2 · 2012: 4
FWCI
2.60
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r35ag007914-03, 5t32ns007179-15)
  • National Institute on Aging (AG07914)
  • National Institute of Neurological Disorders and Stroke (NS10580, NS-07179)
Topics
  • Health Sciences › Medicine › Reproductive Medicine › Hypothalamic control of reproductive hormones
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Estrogen and related hormone effects
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Menopause: Health Impacts and Treatments
Keywords
postmenopause, neuronal hypertrophy, estrogen receptor mRNA, hypothalamus, arcuate nucleus, GnRH mRNA, oophorectomy, neuronal soma size, women
MeSH terms
Adult, Arcuate Nucleus of Hypothalamus, DNA, Feedback, Female, Gene Expression Regulation, Histocytochemistry, Humans, Hypertrophy, Hypothalamus, Menopause, Middle Aged, Neurons, Nucleic Acid Hybridization, Receptors, Estrogen, RNA, Messenger

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