Related Experiment Video
Updated: Nov 6, 2025

Evaluation of Hepatic Glucose Production in a Polycystic Ovary Syndrome Mouse Model
Published on: March 5, 2022
Polycystic οvary syndrome revisited: An interactions network approach
Styliani A Geronikolou1,2, Athanasia Pavlopoulou3,4, Dennis V Cokkinos1
1Clinical, Translational & Experimental Surgery Research Center, Biomedical Research Foundation of the Academy of Athens, Athens, Greece.
Background:
The polycystic ovary syndrome (PCOS) has genetic, epigenetic, metabolic and reproductive aspects, while its complex pathophysiology has not been conclusively deciphered.
Aim:
The goal of this research was to screen the gene/gene products associated with PCOS and to predict any possible interactions with the highest possible fidelity.
Materials And Methods:
STRING v10.5 database and a confidence level of 0.7 were used.
Results:
A highly interconnected network of 48 nodes was created, where insulin (INS) appears to be the major hub. INS upstream and downstream defects were analysed and revealed that only the kisspeptin- and glucagon-coding genes were upstream of INS.
Conclusion:
A metabolic dominance was inferred and discussed herein with its implications in puberty, obesity, infertility and cardiovascular function. This study, thus, may contribute to the resolution of a scientific conflict between the USA and EU definitions of the syndrome and/or provide a new P4 medicine approach.
Insights
Polycystic ovary syndrome (PCOS) involves complex genetic and metabolic factors. This study identified insulin as a central hub in PCOS, suggesting metabolic pathways are key to understanding the condition.
Area of Science:
- Endocrinology and Genetics
- Metabolic Syndrome Research
Background:
- Polycystic ovary syndrome (PCOS) presents multifaceted genetic, epigenetic, metabolic, and reproductive characteristics.
- The intricate pathophysiology of PCOS remains incompletely understood.
Purpose of the Study:
- To screen genes and gene products associated with PCOS.
- To predict potential gene/gene product interactions with high accuracy.
Main Methods:
- Utilized the STRING v10.5 database.
- Applied a confidence score threshold of 0.7 for interaction prediction.
Main Results:
- Constructed a densely interconnected network comprising 48 nodes.
- Identified insulin (INS) as the central hub within the network.
- Analyzed upstream and downstream defects of INS, revealing kisspeptin- and glucagon-coding genes as upstream regulators.
Conclusions:
- Inferred metabolic dominance in PCOS pathophysiology.
- Discussed implications for puberty, obesity, infertility, and cardiovascular health.
- Proposed potential contributions to resolving definitional conflicts and advancing P4 medicine approaches for PCOS.
Related Concept Videos
Hormonal Control of the Ovarian Cycle
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Oogenesis
Protein Networks
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
Protein-protein Interfaces
Ovarian Cycle
Hormonal Regulation of the Menstrual Cycle
At puberty, GnRH begins a pulsatile release pattern, which triggers the anterior pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). The frequency and amplitude of GnRH pulses vary across the menstrual cycle, with faster pulses favoring LH release and slower pulses favoring FSH...

