AOD-9604 Pharmacokinetics & Metabolism Absorption & Distribution AOD-9604 exhibits unusual pharmacokinetic properties for a peptide, demonstrating activity via multiple administration routes in preclinical models: Oral bioavailability confirmed in pig and rodent studies, an uncommon characteristic for peptide compounds Rapid systemic distribution following intraperitoneal administration in mice (15-30 minutes) Following IV administration in pigs, AOD-9604 and degradation fragments appeared rapidly in plasma Oral administration showed slower kinetics but similar degradation product profiles Distribution studies using radiolabeled peptide (C-14-AOD9604) in rats revealed: Elevated concentrations in pineal body and thyroid tissues Distribution to all non-CNS tissues examined Minimal penetration of blood-brain barrier Tissue-specific accumulation patterns suggesting potential targeting mechanisms Metabolism & Elimination The metabolic fate of AOD-9604 involves rapid degradation through sequential N-terminal amino acid removal,: Plasma half-life of approximately 3 minutes following IV administration in pigs (compared to 21 minutes for full-length growth hormone) Sequential amino-terminal truncation represents the primary degradation pathway Principal metabolites identified in vivo include -2 amino acid and -3 amino acid fragments These truncated fragments retain some reduced in vitro anti-lipogenic activity A significant pharmacokinetic paradox exists: despite rapid plasma clearance (peptide undetectable at 56 minutes in spiked plasma studies), biological effects on body weight and fat metabolism persist for hours to days
Oral versions such as capsules or troches are more convenient, but absorption through the digestive tract is far less consistent, so the amount that actually reaches circulation can vary widely
Metabotropic glutamate receptor 5 as drug target for Fragile X syndrome
Vasireddi N, Hahamyan H, Salata MJ, Karns M, Calcei JG, Voos JE, Apostolakos JM
Optimal Timing for Taking Vitamin B12 Supplements For individuals who require vitamin B12 supplementationwhether due to confirmed deficiency, dietary restrictions (such as veganism), or malabsorption conditions the timing of supplementation is generally flexible and should be guided by personal preference and tolerability rather than any specific metabolic advantage related to weight loss
