First of all, sometimes these peptides come from pharma companies
Two collagen types dominate: Type I collagen (mature tendon structure) Type III collagen (early repair phase) In rodent studies, BPC-157-treated tendons showed: Increased type I collagen deposition Improved fiber parallel alignment Better biomechanical strength This suggests influence over: TGF- signalling Matrix metalloproteinases (MMPs) Extracellular matrix remodelling enzymes Balanced ECM remodelling prevents disorganized scar tissue
J Physiol Paris 93:479485 Sikiric P, Seiwerth S, Brcic L, Blagaic AB, Zoricic I, Sever M, Klicek R, Radic B, Keller N, Sipos K et al (2006) Stable gastric pentadecapeptide BPC 157 in trials for inflammatory bowel disease (PL-10, PLD-116, PL 14736, Pliva, Croatia)
Excessive NO co-transmission is also a candidate mechanism for sleep restriction induced neuron loss (Chittora et al., 2022), potentially via accumulation of stress in the autophagic recycling pathway in neurons with sustained waking (Xie et al., 2020