Glutathione is heavily concentrated in the lungs, thus the lungs, not the liver, experience the most dramatic reductions in glutathione due to drinking
They lack the systemic context necessary to recapitulate inter-organ crosstalk (e.g., hepatic regulation of cardiac copper) and are inherently static, making them unsuitable for modelling the gradual pathogenesis of chronic copper imbalances
Neuropeptides like Cerebrolysin or Dihexa are nearly always administered IM because CNS penetration correlates with peak plasma concentration, not sustained levels
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Following administration in preclinical models: Intravenous administration provides immediate systemic availability Intramuscular injection demonstrates absorption with peak levels within 1-2 hours Individual peptide components show variable tissue distribution patterns Blood-brain barrier penetration demonstrated for certain neuropeptide fractions Distribution studies indicate that some peptide components can cross the blood-brain barrier, though the extent varies by molecular weight and specific peptide characteristics
This is so fascinating
