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The breadth of documented activity reflects what the original investigators have described as systems-level pharmacology: rather than acting through a single high-affinity receptor, BPC-157 appears to modulate multiple intersecting cellular pathways including nitric oxide signalling, growth-factor receptor expression, dopamine and serotonin metabolism, and angiogenic vessel formation

Pediatr Nephrol 28:507510

Liver fibrosis indices and outcomes after primary intracerebral hemorrhage

Sculptra provides a gradual increase in skin thickness and collagen production, which results in smoother skin and fuller volume over time

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Some individual peptides have been approved by the FDA for specific medical uses (e.g., insulin, liraglutide)