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Updated: Jul 19, 2026
06:53
Parallel Measurement of Circadian Clock Gene Expression and Hormone Secretion in Human Primary Cell Cultures
Published on: November 11, 2016
Dynamic model of hormonal systems coupled by negative feedback.
C H Londergan1, E Peacock-López
1Department of Chemistry, Williams College, Williamstown, MA 01267, USA.
Biophysical Chemistry
|October 13, 2006
Summary
Complex hormone release patterns, like pulsatile release, may stem from simple negative feedback loops. Our model shows how cell coupling can generate diverse, dynamic hormonal oscillations.
Area of Science:
- Physiology
- Biophysics
- Systems Biology
Background:
- Hormone concentrations are typically regulated by negative feedback mechanisms.
- Many hormones exhibit complex, pulsatile release patterns.
- The underlying mechanisms for these complex patterns are often poorly understood.
Purpose of the Study:
- To investigate the potential of simple feedback systems to generate complex hormone release dynamics.
- To model the interaction of two cells coupled via negative feedback to external products.
Main Methods:
- Developed a computational model of two coupled cells.
- Simulated negative feedback loops between cells and their external products.
- Analyzed the dynamic behaviors, including oscillations, emerging from the model.
Main Results:
- The model demonstrated periodic, aperiodic, and chaotic oscillations.
- Cellular coupling was identified as a key factor driving these dynamic behaviors.
- The system exhibited a wide range of complex dynamic patterns.
Conclusions:
- Simple physiological feedback loops can explain complex hormone release patterns.
- Coupling between circulatory hormones and production centers may drive observed in vivo pulsatility.
- This model provides a framework for understanding the origins of complex endocrine dynamics.
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01:19Regulation of Hormone Secretion
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