HPG / HPA Axis Feedback Network
E2
P4
Cortisol
Pulse frequency represents pituitary gonadotropin drive (FSH/LH). Thick dashed lines indicate negative feedback loops.
Target Cell Membrane Kinetics
Particles collide with transmembrane receptors. Bound receptors trigger intracellular downstream cascade flares.
Hormone Concentration Adjusters
Direct manual manipulation overrides active preset values
Estradiol (E2)
18 pg/mL
Progesterone (P4)
0.4 ng/mL
FSH (Follicle-Stimulating)
65 mIU/mL
LH (Luteinizing)
42 mIU/mL
Cortisol
250 nM
Symptom & Receptor Decoder
Perimenopause Pattern Active
Vasomotor Stability (Hot Flashes)
Moderate Instability
Hypothalamic KNDy neuron hyperactivity triggered by withdrawal of estrogenic negative feedback, narrowing the zone of thermoregulatory threshold.
Neurosteroid & GABA-A Modulation
Attenuated
Progesterone neurosteroid metabolites (allopregnanolone) normally enhance GABA-A inhibition. Low levels disrupt sleep architecture & mood resilience.
Bone Remodeling Ratio (RANKL/OPG)
Resorption Bias
Estrogen induces osteoclast apoptosis. Low ER-alpha receptor occupancy increases RANKL expression, accelerating bone mineral density depletion.
Generating endocrine summary brief...