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In vitro and in vivo animal studies have explored how peptide-based interventions can modulate these pathways, with research demonstrating peptide-mediated suppression of UV-induced MMP expression and reduction in oxidative stress markers in irradiated cell cultures
IGF-I deficiency is associated with growth hormone insensitivity syndrome (GHIS) also called Laron syndrome, liver cirrhosis, age-related cardiovascular and neurological diseases, and intrauterine growth restriction
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Research on DSIP hints at hormonal modulation (for example, stimulation of luteinizing hormone in animal studies) and may also play a role in motor function, but there is no strong, reliable human evidence that DSIP directly boosts testosterone in a meaningful way