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Related Experiment Video

Updated: Jun 30, 2026

Whole Ovary Immunofluorescence, Clearing, and Multiphoton Microscopy for Quantitative 3D Analysis of the Developing Ovarian Reserve in Mouse

Whole Ovary Immunofluorescence, Clearing, and Multiphoton Microscopy for Quantitative 3D Analysis of the Developing Ovarian Reserve in Mouse

Published on: September 3, 2021

Ovarian function: a theory of relativity.

Andrea Weghofer¹, Norbert Gleicher

¹Department of Obstetrics and Gynecology, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria. andrea.weghofer@meduniwien.ac.at

Human Reproduction (Oxford, England)

|October 1, 2008

Summary

Biological systems rely on the balance of opposing hormones, not just absolute levels. Understanding hormonal ratios is key for diagnosing and treating infertility.

Area of Science:

Endocrinology
Physiology
Systems Biology

Background:

The prevailing view in endocrinology focuses on absolute hormone levels for assessing biological processes.
Kol and Homburg recently proposed that changes in hormone values, rather than static levels, are critical for biological function.

Discussion:

This communication extends the hypothesis by highlighting the fundamental principle of opposing forces maintaining system stability in nature.
Loss of this delicate equilibrium can lead to systemic malfunctions and adverse health outcomes.
The concept suggests that biological messages are conveyed not only by individual hormone level changes but crucially by the ratios between physiologically opposing hormones.

Key Insights:

Hormonal ratios between opposing hormones are significant biological signals.

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Systemic stability is maintained by the balance of antagonistic hormonal forces.

Changes in hormonal ratios, not just absolute values, provide critical physiological information.

Outlook:

This perspective offers a novel framework for understanding hormone action and physiological regulation.
It could lead to improved diagnostic methods for conditions related to hormonal imbalances.
The concept holds potential for developing more effective therapeutic strategies, particularly in reproductive medicine and infertility treatment.